CN205019161U - Ripple type radio frequency melts pipe and equipment with silk is adjusted to adherence - Google Patents

Abstract

The utility model provides a have the adherence and adjust the ripple type radio frequency of silk and melt the pipe, have the connecting catheters of rectangular shape, be equipped with electrode support at connecting catheters's front end, be provided with brake valve lever in connecting catheters's rear end, electrode support is the ripple type electrode support who comprises the one or more ripple, and the one or more electrode distributes respectively on the ripple, the adherence adjust the silk the back end slidable set up in one of them lumen of connecting catheters to its rear end perhaps is connected to the setting on the outside control of brake valve lever on being connected to the control of setting on brake valve lever, the adherence is adjusted the anterior segment of silk and is worn out the electrode support outside, and the process sets up the one or more hole on the ripple or walks around a plurality of ripples, then its front end is got back to, and electrode support is inside to be fixed. The silk is adjusted through stimulateeing the adherence backward, the corrugated diameter of electrode support can be changed by a wide margin.

Description

Corrugated radiofrequency ablation catheter with wall-attachment adjustment wire and its equipment

technical field

The utility model relates to a corrugated radio frequency ablation catheter with a wall-attaching adjustment wire, and also relates to radio frequency ablation equipment including the radio frequency ablation catheter, which belongs to the technical field of interventional medical devices.

Background technique

In the radiofrequency ablation system, the radiofrequency ablation catheter is a key device used to intervene in human blood vessels and release radiofrequency energy. Wherein, the radiofrequency electrode is installed on the stent at the front end of the radiofrequency ablation catheter, and the stent is used to carry the radiofrequency electrode, expand and adhere to the wall before the radiofrequency starts, and retract after the radiofrequency ends. Since the radiofrequency ablation operation is directly intervening in human blood vessels, the expansion and contraction size of the stent should be adapted to the diameter of human blood vessels.

The diameter of blood vessels in the human body varies depending on the site of ablation. At the same time, the diameter of human blood vessels also varies from person to person. For example, the diameter of the renal artery in different human bodies is about 2-12 mm, which is quite different. In the prior art, the telescopic size of the electrode end of the radiofrequency ablation catheter is generally fixed, which cannot meet the diameter and size requirements of different human blood vessels, and the coverage of human blood vessels with different diameters is relatively narrow. Therefore, when performing radiofrequency ablation operations on different patients, it is usually necessary to replace radiofrequency ablation catheters of different specifications and models for ablation. Even so, in some cases, there will be a problem that the radio frequency electrodes cannot be attached to the wall at the same time during the operation, which will affect the effect of the operation.

The structure of radiofrequency ablation catheters can be divided into various types according to the shapes of electrodes and electrode holders, such as: balloon type, puncture needle type, spiral type, and valve-shaped structure. Various existing radiofrequency ablation catheters have limitations in their adaptability to blood vessels of different diameters.

Contents of the invention

The primary technical problem to be solved by the utility model is to provide a corrugated radio frequency ablation catheter with wall-adhering adjustment wires.

Another technical problem to be solved by the utility model is to provide a radio frequency ablation device including the above radio frequency ablation catheter.

In order to realize above-mentioned technical purpose, the utility model adopts following technical scheme:

A corrugated radiofrequency ablation catheter with a wall-attachment adjustment wire, which has a long connecting catheter, an electrode holder is arranged at the front end of the connecting catheter, and a control handle is arranged at the rear end of the connecting catheter;

Wherein, the electrode support is a corrugated electrode support composed of one or more corrugations, and one or more electrodes are distributed on the corrugations;

The rear section of the adherence adjustment wire is slidably arranged in one of the lumens of the connecting catheter, and its rear end is connected to the control member provided on the control handle, or its rear end is connected to the outer tube. The front section of the wall-adhering adjustment wire passes through the outside of the electrode bracket, passes through one or more holes arranged on the corrugation or bypasses multiple corrugations, and then returns to the electrode bracket at its front end The interior is fixed.

Wherein preferably, after the front end of the adherence adjustment wire returns to the inside of the electrode bracket, it passes through the lumen inside the electrode bracket and the connecting catheter and returns to the rear end of the connecting catheter, and is fixed on the control handle or fixed on the control.

Or, preferably, the front end of the adherence adjustment wire is fixed on the front end of the electrode bracket after returning to the inside of the electrode bracket.

Or, where preferably, the front end of the adherence adjustment wire passes through the front end of the electrode bracket, and then is fixed on the front end of the electrode bracket or restricted outside the front end of the electrode bracket.

Or, preferably, it also includes a support wire arranged in a certain lumen of the connecting catheter and the electrode bracket, and the front end of the adherence adjustment wire is fixed on the support wire; or, the The adherence adjustment wire is a thin wire that the support wire branches out.

Wherein preferably, the part of the support wire inside the electrode holder is corrugated to form a corrugated shaped section.

Or, preferably, it also includes a shaped wire arranged in a certain lumen of the electrode bracket, and the front end of the adherence adjustment wire is fixed on the shaped wire; or, the adherence adjustment wire It is the thin filament that the sizing filament is branched out.

Or, preferably, the adherence adjustment wire is composed of two or more than two wires, and the multiple wires are respectively used to adjust one or a section of corrugation on the electrode bracket, wherein a section of corrugation includes two One or more than two corrugations, the front end of each wire is respectively fixed on one end of the corresponding corrugation/corrugation section, the other end bypasses the corresponding corrugation/corrugation section, and passes through the inside of the electrode holder and the lumen inside the connecting catheter, and then It is fixed on the corresponding control part arranged on the control handle or the control part of the peripheral device.

Wherein preferably, the multi-segment corrugations respectively controlled by the plurality of wires overlap.

Wherein preferably, the adherence adjustment wire is arranged eccentrically on the electrode holder.

Wherein preferably, the electrode is arranged at the peak/valley position of the corrugated section.

A radiofrequency ablation device includes the radiofrequency ablation catheter described above, and a radiofrequency ablation host connected to the radiofrequency ablation catheter.

The utility model provides a corrugated radiofrequency ablation catheter with wall-adhering adjustment wires, which has a novel structure and better adaptability to target lumens with different diameters. In target lumens with different diameters, the electrodes arranged on the corrugations can be in a good adherence state by pulling the adherence adjustment wire. Preferably, by designing the distribution orientations of different corrugations in the corrugated radiofrequency ablation catheter, multiple electrodes located on the corrugations can be distributed approximately in a circle around the target lumen when adhering to the wall. In addition, the above-mentioned adherence adjustment wire can also adopt a multi-wire structure. By controlling a single wire separately, it is possible to control different corrugated sections of the radiofrequency ablation catheter separately, and simplify the difficulty of adjusting the diameter of the corrugated radiofrequency ablation catheter.

Description of drawings

Fig. 1A and Fig. 1B are respectively the three-dimensional structure schematic diagram and the side view schematic diagram of the corrugated radio frequency ablation catheter in the first embodiment;

Fig. 2 is a schematic cross-sectional view of the corrugated radiofrequency ablation catheter and the electrode holder shown in Fig. 1A;

Fig. 3 is the E-E sectional schematic diagram of electrode holder shown in Fig. 2;

Fig. 3F is an enlarged schematic diagram of part F in Fig. 3;

Fig. 4 is a schematic diagram of another arrangement of the adherence adjustment wire in the first embodiment;

Fig. 5 is a structural schematic diagram corresponding to the control handle of the corrugated radiofrequency ablation catheter shown in Fig. 1A in the first embodiment;

Fig. 6A is a schematic diagram of the use state of the corrugated radiofrequency ablation catheter entering a target lumen with a smaller diameter in the first embodiment;

Figure 6B is a schematic side view corresponding to Figure 6A;

Fig. 7A is a schematic diagram of the use state of the corrugated radiofrequency ablation catheter entering a target lumen with a relatively large diameter in the first embodiment;

Figure 7B is a schematic side view corresponding to Figure 7A;

Fig. 8A and Fig. 8B are respectively the front view schematic diagram and the side view schematic diagram of the corrugated radio frequency ablation catheter in the second embodiment;

Fig. 9A and Fig. 9B are respectively a three-dimensional structure schematic diagram and a side view schematic diagram of the corrugated radiofrequency ablation catheter in the third embodiment;

Fig. 10A and Fig. 10B are respectively the three-dimensional structure schematic diagram and the side view schematic diagram of the corrugated radio frequency ablation catheter in the fourth embodiment;

Fig. 11 is a schematic diagram of the three-dimensional structure of the corrugated radiofrequency ablation catheter in the fifth embodiment;

Fig. 12 is a structural example 1 of the wall-attachment adjustment wire in the corrugated radiofrequency ablation catheter shown in Fig. 11;

Fig. 13 is a structural example 2 of the wall-attachment regulating wire in the corrugated radiofrequency ablation catheter shown in Fig. 11;

Fig. 14 is a structural example three of the wall-attachment adjustment wire in the corrugated radiofrequency ablation catheter shown in Fig. 11;

Fig. 15A is a first schematic diagram of the use state of the control handle corresponding to the corrugated radio frequency ablation catheter in the fifth embodiment;

Fig. 15B is the second schematic diagram of the use state of the control handle corresponding to the corrugated radiofrequency ablation catheter in the fifth embodiment;

Fig. 16 is a schematic diagram of the three-dimensional structure of the corrugated radiofrequency ablation catheter in the sixth embodiment;

Fig. 17 is a schematic diagram of the stereoscopic structure of the second corrugated radiofrequency ablation catheter in the sixth embodiment;

Fig. 18 is a schematic diagram of the three-dimensional structure of the corrugated radiofrequency ablation catheter in the seventh embodiment;

Fig. 19 is a structural example 1 of the wall-attachment regulating wire in the corrugated radiofrequency ablation catheter shown in Fig. 18;

Fig. 20 is a structural example 2 of the wall-attachment regulating wire in the corrugated radiofrequency ablation catheter shown in Fig. 18;

Fig. 21 is a third structural example of the wall-attachment adjustment wire in the corrugated radiofrequency ablation catheter shown in Fig. 18;

Fig. 22 is a schematic diagram of the three-dimensional structure of the corrugated radiofrequency ablation catheter in the eighth embodiment;

Fig. 23 is a schematic structural view of the wall-attachment adjustment wire in the corrugated radiofrequency ablation catheter shown in Fig. 22;

Fig. 24 is a schematic perspective view of the corrugated radiofrequency ablation catheter in the ninth embodiment.

detailed description

The technical content of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

first embodiment

From Figure 1A to Figure 7B, it can be seen that the corrugated radiofrequency ablation catheter provided by the utility model includes a long connecting catheter, and a corrugated electrode bracket is provided at the front end of the connecting catheter (see Figure 1A). The end is provided with a control handle 20 (see FIG. 5). In actual production, the electrode holder can be made integrally with the connecting catheter, and the electrode holder is the corrugated part of the front end of the connecting catheter; the electrode holder can also be manufactured independently, and then connected with the connecting catheter as a whole.

As shown in FIGS. 1A and 1B , the corrugated electrode holder includes an outer tube 1 and one or more electrodes 2 disposed on the outer tube 1 . The outer tube 1 is shaped into a corrugated shape consisting of one or more corrugations. The shape of the corrugation can be a broken line composed of multiple straight lines, such as a triangular wave; the shape of the corrugation can also be composed of multiple curves, such as a sine wave and an arc wave. ; The shape of the corrugation can also be composed of curves and straight lines, such as trapezoidal waves with curved corners. In addition, the shape of the corrugation can also be other shapes with undulating structures. Moreover, in the same electrode holder, the shapes and sizes of the multiple corrugations may be the same or different. The following will describe in detail in combination with specific embodiments. Among the plurality of corrugations, some of the corrugations are located in different planes, and some of the corrugations are located in the same plane. In this embodiment, every two corrugations are located in one plane, so that the plurality of corrugations exhibit a divergent shape as shown in FIG. 1B in their side projections. A plurality of electrodes 2 may be respectively distributed on each corrugation, wherein it is preferable to arrange the electrodes 2 at the crests or valleys of the corrugations. The electrode 2 can be a block electrode or a ring electrode embedded in the outer circumference of the outer tube 1, and the outer surface of the electrode 2 can be flush with the outer surface of the outer tube 1 or slightly higher than the outer surface of the outer tube 1. The electrode 2 The outer surface of the outer tube can also be lower than the outer surface of the outer tube 1.

It can be seen from the schematic side view shown in FIG. 1B that, in this embodiment, each corrugation in the corrugated electrode holder is distributed across each other on its side projection, and a plurality of electrodes 2 are respectively arranged at respective crest positions. When the corrugations intersect with each other at the same angle, the plurality of electrodes 2 can be evenly distributed around the circumference on the side projection of the electrode holder, that is, approximately circumferentially distributed on the outer circumference of the target lumen. Certainly, when the intersecting angles of the respective corrugations are inconsistent, the plurality of electrodes 2 may also be unevenly distributed around the circumferential direction on the side projection of the electrode holder. Moreover, when the electrode holder is long, multiple corrugations can be repeated regularly or randomly in the length direction of the electrode holder, so that multiple electrodes 2 can overlap on the side projection of the electrode holder.

Combining the internal sectional views shown in Figure 2, Figure 3 and Figure 3F, it can be seen that the outer tube 1 of the electrode holder can be a single-lumen tube or a multi-lumen tube, and the outer tube 1 can be made of polymer materials or metal materials, such as stainless steel or memory Alloy and other materials. The outer pipe 1 can be processed from straight pipes and rods, and can also be made into corrugated special-shaped pipes using section A. As shown in Figure 2, when the outer tube 1 uses a multi-lumen tube, in addition to the central lumen inside the outer tube 1 of the electrode holder, there are also multiple lumens, and a group of radio frequency tubes are respectively set in some of the lumens. Wire 3 and thermocouple wire 4, the head end of each group of radio frequency wire 3 and thermocouple wire 4 is arranged inside a single electrode 2, wherein, the head end of radio frequency wire 3 and electrode 2 are tightly fixed, such as using welding, conductive adhesive The connection is realized through welding and other processes; the head ends of the two thermocouple wires 4 are welded and covered by the insulating layer 5 at the head ends of the thermocouple wires, and then insulated from the radio frequency wire 3 and the electrode 2 .

As shown in FIG. 2 , a shaped wire 8 is also arranged in one of the lumens of the outer tube 1 , and the shaped wire 8 is fixed in the deformed region of the electrode bracket for supporting the corrugated shape of the electrode bracket. Of course, the electrode support can also be directly shaped into a corrugated shape, thereby eliminating the setting wire 8. For example, when using memory alloy or polymer material to make the outer tube, the outer tube can be shaped directly, thereby eliminating the setting of the setting wire 8.

As shown in Figure 3, a support wire 7 is provided in the inner central lumen connecting the catheter and the electrode holder, and the support wire 7 can be movably arranged in the central lumen, and can also be fixedly arranged in the central lumen, or support The wire 7 can also be set movably or fixedly in other lumens connecting the catheter and the electrode holder. The head end of the support wire 7 can be provided with a developing head 75 for real-time imaging of the inside of the target lumen. At the same time, a soft guide wire 9 can also be set at the front end of the support wire 7, and the soft guide wire 9 can be a straight soft guide wire or an elbow soft guide wire as shown in the figure, so that the radiofrequency ablation catheter can be omitted. Guiding catheter/sheath, directly into the blood vessel, simplifying the operation.

2 to 5, it can be seen that the outer tube 1 and the connecting catheter are also provided with a lumen for accommodating the adhering adjustment wire 6, and the rear section of the adhering adjusting wire 6 is slidably arranged in one of the lumens of the connecting catheter. and its rear end 60 is connected to the control member 22 provided on the control handle 20 (see FIG. 5 ). The sticking adjustment wire 6 can slide back and forth in the lumen of the connecting catheter. The lumen for accommodating the adherence adjustment wire 6 may be a central lumen, or one of a plurality of eccentric lumens distributed around the central lumen. As shown in Figure 1A, the front section of the adherence adjustment wire 6 passes through the hole 12 near the rear end of the electrode holder, and passes through a plurality of holes arranged on different corrugations, and finally its front end returns to the electrode from the hole 11 near the front end of the electrode holder. The stand is inside and secured. The sticking adjustment wire 6 can slide in holes arranged on different corrugations.

The fixed position of the front end of the wall-attachment adjustment wire 6 can be different, it can be fixed on the front end of the electrode support, it can also be fixed on the front end of the support wire 7, it can also be fixed on the shaping wire 8, or it can also pass through the electrode support. 2 and the corresponding lumen connected to the inside of the catheter are fixed on the control member 22 or on the housing of the control handle 20 together with the rear end 60 of the wall-adherence adjustment wire 6 .

Specifically, in the structure shown in Figure 3, after the front end of the adherence adjustment wire 6 returns to the inside of the electrode bracket 2 from the hole 11 near the front end of the electrode bracket, it passes through the electrode bracket and the inner lumen of the connecting catheter, and is in contact with the sticking wire. The rear end of the wall adjustment wire 6 returns to the rear end of the connecting conduit together, and is fixed on the housing of the control handle 20 or the control member 22 . That is to say, the front end and the rear end of the sticking adjustment wire 6 can be fixed on the same control member 22 as shown in FIG. On the shell of the control handle 20 , the other end is fixed on the control member 22 . The diameter of the electrode support can be changed by pulling the control member 22 to drive the adjustment wire 6 to move backward.

Of course, the front end of the wall-adhering adjustment wire 6 can also be simply fixed on the front end of the electrode holder, or on the front end of the support wire 7 or on a certain position inside the electrode holder, or on a certain position on the sizing wire 8. One part, or the front end of the adherence adjustment wire 6 is fixed in the lumen of the electrode holder, as long as the front end is fixed. Under the action, the electrode holder will shrink and deform, the diameter of its corrugations will increase, and the axial spacing of multiple corrugations will shrink. When the front end of the adherence adjustment wire 6 is fixed on the support wire 7 or the setting wire 8, the adherence adjustment wire 6 and the support wire 7/setting wire 8 can be made of the same material. 6 is the thin wire that supporting wire 7/setting wire 8 separates backward.

For example, in the structure shown in Figure 4, the front end of the sticking adjustment wire 6 and the front end of the setting wire 8 are fixed together. The wall adjusting wire 6 and the shaping wire 8 are two thin wire branches branched out from the front end respectively, wherein the branch corresponding to the shaping wire 8 is fixed in a certain lumen of the electrode holder, and the branch corresponding to the wall-attaching adjusting wire 6 The posterior segment of the branch can slide in the lumen of the electrode holder and/or catheter barrel. When the wall-adhering adjusting wire 6 and the setting wire 8 are made of different materials (for example, the setting wire 8 uses a pipe, and the wall-adhering adjusting wire 6 uses a thin wire), the front end/front section of the wall-attaching adjusting wire 6 and the setting wire 8 can be welded , riveting, bonding and other ways to assemble together.

In addition, it can also be seen from FIG. 5 that in the above-mentioned structure, a control member 23 is also provided outside the control handle 20, and the end 70 of the support wire 7 also enters the control handle 20 after passing through the connecting conduit, and passes through the control handle. After 20, be fixed on the control part 23 of peripheral equipment. Certainly, the control part 22 connected with the wall-adherence adjustment wire 6 can also be arranged on the outside of the control handle 20 in the form of an external device, and the front end and/or rear end of the wall-adherence adjustment wire 6 pass through the control handle 20 and are connected to the external device. on the control 22. Similarly, the control member 23 can also be arranged on the control handle 20 , and the support wire 7 is directly connected to the control handle 20 after passing through it. When the support wire 7 is fixedly arranged inside the connecting catheter and the electrode holder, the control member 23 for controlling the support wire 7 can be omitted.

6A to 7B are schematic diagrams showing the use state of the corrugated radiofrequency ablation catheter entering target lumens with different diameters. Assuming that the corrugated electrode holder shown in FIG. 1A has an initial diameter of ΦB, the length of the corrugated section is A. By loosening the adherence adjustment wire 6, the adhesion adjustment wire 6 is loosened, and at this time, the length of the corrugated section at the front end of the catheter can be extended with the help of the sheath, which is close to a straight line and can enter the target lumen. As shown in Figure 6A, when the corrugated electrode stent enters a thinner blood vessel from the sheath (assuming that the diameter ΦC of the target lumen is smaller than the initial diameter ΦB of the corrugated shape), the corrugations of the electrode stent automatically expand to approach the diameter of the target lumen. Diameter ΦC (see Figure 6B), multiple electrodes 2 are in contact with the tube wall under the action of the natural expansion of the electrode bracket. The wire 6 can improve the adherence state of the electrode 2 . As shown in Figure 7A, when the corrugated electrode stent enters a thicker blood vessel from the sheath, assuming that the diameter of the target lumen is greater than or equal to the initial diameter ΦB of the corrugated shape, when the electrode stent expands naturally, electrode 2 cannot be well attached. At this time, by pulling the adherence adjustment wire 6 backward, the corrugated diameter of the electrode holder can be increased to be equal to or slightly larger than the diameter ΦD of the target lumen (see FIG. 7B ). Under the action of 6, it is in close contact with the pipe wall. At this time, the length of the corrugated section of the electrode holder is shortened to (A-2), and the axial spacing between the electrodes distributed on the electrode holder is reduced. After the radio frequency is over, the electrode support is loosened by loosening the apposition adjustment wire 6, and then the sheath is advanced or the catheter is moved backward to allow the electrode support to enter the sheath, so that the radiofrequency ablation catheter can be rotated or moved in the target lumen, or , and remove the radiofrequency ablation catheter from the target lumen.

Second Embodiment to Fifth Embodiment

In the second embodiment shown in FIGS. 8A and 8B , the corrugated electrode holder is composed of a plurality of triangular waves, and the plurality of corrugations are located in the same plane. Wherein, the plurality of electrodes are respectively located at the peak and trough positions of a single triangular wave, and since the side projections of the plurality of triangular waves overlap, the side projections of the plurality of electrodes also overlap. After one ablation is completed, the same position of the target lumen can be ablated again by rotating the catheter at a certain angle.

In a third embodiment shown in FIGS. 9A and 9B , the corrugated electrode holder consists of a plurality of circular arc waves, but the plurality of corrugations are all located in different planes. The plurality of electrodes are located at the crest (or trough) of a single arc wave, so that the side projections of the plurality of electrodes can be distributed in the circumferential direction of the target lumen. At this time, after one ablation is completed, the catheter can be directly moved to ablate other parts of the target lumen, without rotating the catheter at the same position of the target lumen.

In the second embodiment and the third embodiment, after the front section of the adherence adjustment wire 6 passes through the hole near the rear end of the electrode holder, it passes through holes arranged on different corrugations, and finally its front end passes through the hole near the front end of the electrode holder. Go back inside the electrode holder and be secured.

Since the multiple arc waves in the third embodiment are respectively located in different planes, and the side projections of multiple electrodes are distributed in the circumferential direction of the target lumen, compared with the second embodiment, the radiofrequency ablation operation in the third embodiment The setting direction of the electrode holder in the target lumen is relatively low, so it is easy to operate. However, when the structure of the second embodiment enters the target lumen, the difficulty is lower than that of the structure of the third embodiment.

In the fourth embodiment shown in FIG. 10A and FIG. 10B , the multiple corrugations of the corrugated electrode holder are all located in different planes, and the multiple corrugations are approximately spirally distributed, and the multiple electrodes are respectively located on the sides of a single corrugation. The positions of the peaks (or valleys) also allow multiple electrodes to be distributed in the circumferential direction of the target lumen. In this embodiment, the plurality of corrugations can be distributed in a helical form of one or more turns, and the adherence adjustment wire 6 can also pass through holes provided on different corrugations.

In a fifth embodiment shown in FIG. 11, the corrugated electrode holder consists of a plurality of sinusoidal waves. Same as the second embodiment, the multiple corrugations in the fifth embodiment are located in the same plane, and the multiple electrodes are respectively located at the peaks and troughs of each sine wave. However, unlike the second embodiment, the front end of the adherence adjustment wire 6 does not pass through multiple corrugations, but its front end is fixed after bypassing multiple corrugations.

Based on the above five embodiments, it can be seen that the shape of the multiple corrugations in the corrugated electrode holder can be a triangular wave composed of multiple straight lines (see Figure 8A), or an arc wave composed of multiple circular arcs (see Figure 10A) , a sine wave (see Figure 11) or any one of a trapezoidal wave composed of straight lines and curves or other unillustrated ripples. The multiple corrugations can be distributed in the same plane or in different planes, and even the multiple corrugations can surround in an approximate spiral shape, so that the electrodes are distributed in the circumferential direction. Compared with multiple corrugations being distributed in the same plane, when multiple corrugations are distributed in different planes, in actual ablation operations, the corrugated electrode holder can adhere to the wall in any direction in the target lumen. In the above illustrated embodiment, on the same electrode holder, the shapes of the corrugations forming the corrugation are the same. Of course, the shapes and sizes of the multiple corrugations constituting the corrugated shape may also be different, and the shape, pitch, peak position, and trough position of each corrugation may be different. When corrugations of different sizes are used to form the corrugated electrode holder, when adjusting the adherence state, the adherence state of the local electrode can be adjusted by adjusting the corrugation size of the local area, and at the same time, the shape of other areas can not be adjusted. The adhering adjustment method of the corrugated electrode bracket composed of different corrugations can be realized by pulling different sub-filaments in the adhering adjustment wire 6 composed of multiple wires. For details, please refer to the following ninth embodiment. The structure of the adherence adjustment wire 6 composed of multiple wires and the adjustment method of the adherence are introduced.

In addition, in this radio frequency ablation catheter, the arrangement mode of the adherence adjustment wire 6 can also be varied, and the front section of the adherence adjustment wire 6 can be set in multiple positions as shown in the first embodiment, the second embodiment and the third embodiment. The holes on the outer tubes of each corrugation, as shown in the fifth embodiment, do not pass through the outer tubes of each corrugation, but directly bypass each corrugation and enter the inside of the electrode holder and be fixed. Compared with the setting method in which the front section of the sticking adjusting wire 6 is exposed outside the electrode bracket as a whole, the sticking adjusting wire 6 passes through the structure of holes arranged on different corrugated outer tubes, so that the shape change of the electrode bracket is more controllable. The effect of sticking to the wall is better.

fifth embodiment

The above only briefly introduces the shape of the electrode holder in the fifth embodiment and the setting method of the front section of the adherence adjustment wire 6. The fifth embodiment is taken as an example in conjunction with FIG. 11 to FIG. The specific structure of the adjustment wire 6 and the structure of the corresponding control handle 20 will be described in detail.

In the radiofrequency ablation catheter as shown in Figure 11, the adherence adjustment wire 6 inside it can be similar to the structure in the first embodiment, and the adherence adjustment wire 6 is a monofilament independent of the support wire 7 and the shaping wire 8; The adjustment wire 6 can also have the function of a support wire at the same time, or the front end of the adhesion adjustment wire 6 can also be fixed with the support wire 7, so that the adhesion adjustment wire 6 can be used as a branch of the support wire 7. Both the support wire 7 and the wall-adhesion adjustment wire 6 can be made of thin wire or thin tube.

As shown in Figure 12 and Figure 13, when the adherence adjustment wire 6 has the function of a support wire at the same time, the rear section of the adhesion adjustment wire 6 is slidably arranged in a certain lumen of the connecting catheter, and its rear end is connected to To the control handle 20; after the front section of the wall-adhering adjustment wire 6 bypasses multiple corrugations or passes through holes arranged on different corrugations, its front end returns to the inside of the electrode bracket from the hole 11 near the front end of the electrode bracket, and passes through the front end of the electrode bracket And be fixed on the front end of the electrode support or be limited to the outside of the front end of the electrode support. A developing head and/or a soft guide wire 9 may be arranged at the front end of the adherence adjustment wire 6 . The structure of the soft guide wire 9 can be a straight soft guide wire as shown in FIG. 12 , or an elbow soft guide wire as shown in FIG. 13 . Elbow flexible guide wire can be composed of multiple arcs, straight lines or curves, and can have one or more elbows. When the front end of the adherence adjustment wire 6 is provided with a soft guide wire, the radiofrequency ablation catheter can enter the desired position in the blood vessel without the guidance of a sheath.

As shown in FIG. 14 , when the front end of the adherence adjustment wire 6 is fixed on the support wire 7 , it can be understood that the adherence adjustment wire 6 is a backward branch 76 of the support wire 7 . At this time, there are one or two lumens inside the connecting catheter and the electrode holder for accommodating the two branches of the support wire 7 . When the sizing wire 8 is not independently set inside the electrode bracket, it is also possible to shape the front part of the support wire 7 corresponding to the electrode stent into a corrugated sizing section 78 by pre-sizing, and the support wire 7 corresponds to the corrugated sizing section 78. The branch is fixed inside the lumen, and its rear end can be directly fixed in the connecting catheter or inside the control handle, so as to ensure that the electrode bracket can maintain the corrugated shape when it is not subjected to external force; and the support wire 7 corresponds to the wall-adhering adjustment wire The branch 76 can be slidably arranged inside the lumen, and its end can be fixed on the control part provided on the control handle 20 or can also be fixed on the control part of the external device. And when the support wire 7 does not have the function of the shaping wire 8, the support wire 7 and the adherence adjustment wire 6 can be slid together and arranged in the same or respectively in two lumens, and the rear ends of the two pass through the connecting catheter. Finally, they are respectively fixed on the corresponding control parts arranged on the control handle 20 or the corresponding control parts of the peripheral equipment.

When the adherence adjustment wire 6 is combined with the support wire 7, or when the support wire 7 has the function of the setting wire 8 concurrently, only one control member 22 connected with the adherence adjustment wire 6 can be set on the control handle 20. At this time, The structure of the control handle 20 can be referred to Fig. 15A and Fig. 15B. By pushing back the control member 22 from the position shown in FIG. 15A to the position shown in FIG. 15B , the apposition adjustment wire 6 can be pulled backward to increase the diameter of the electrode holder.

Sixth embodiment

Fig. 16 and Fig. 17 are schematic diagrams of two structures of the radiofrequency ablation catheter in the sixth embodiment.

In the first embodiment to the fifth embodiment, regardless of whether a plurality of corrugations are distributed in the same plane or in different planes, and regardless of whether the adherence adjustment wire 6 passes through the holes provided on the corrugations, the adherence adjustment wire 6 is all set in the near the center of the electrode holder. However, in the sixth embodiment, which is different from the above five embodiments, in this embodiment, the wall-attachment adjustment wire 6 is eccentrically arranged on the corrugated electrode holder, and its setting position can be the highest point of the electrode holder or the highest point of the electrode holder. It can be any position between the center position and the apex position of the electrode holder.

In the structure shown in Figure 16, the adherence adjustment wire 6 is eccentrically arranged on the corrugated electrode support, and the front section of the adherence adjustment wire 6 passes through the hole arranged on the corrugation after passing through the hole near the rear end of the electrode support. , and then enter the front end of the electrode support from the hole close to the front end of the electrode support and be fixed.

In the structure shown in Figure 17, the wall-adherence adjustment wire 6 is eccentrically arranged on the corrugated electrode bracket. After the front section of the wall-adherence adjustment wire 6 passes through the hole near the rear end of the electrode bracket, it bypasses multiple corrugations, and then passes through the The hole close to the front end of the electrode support is fixed after entering the front end of the electrode support.

When the front end of the wall-adhering adjustment wire 6 is set around multiple corrugations, pulling the wall-adherence adjustment wire 6 can greatly increase the diameter of the corrugated shape after contraction. diameter blood vessels. Since the diameter range of the human blood vessel is fixed, the initial diameter of the corrugated electrode holder in the radiofrequency ablation catheter can be greatly reduced, which facilitates the radiofrequency ablation catheter to enter the blood vessel and move inside the blood vessel.

Seventh embodiment

In the radiofrequency ablation catheter as shown in FIG. 18 , the electrode holder has two corrugations, and the adherence adjustment wire 6 is eccentrically arranged, wherein one or two adherence adjustment wires 6 can be used.

In the structure shown in Figure 19, the wall-adherence adjustment wire 6 is a wire, and its rear section returns to the control handle through the lumen inside the connecting catheter, and its rear end is fixed on the control handle provided on the control handle. Components or peripheral control parts; after the middle section passes through the hole 12 near the rear end of the electrode holder, two points are respectively fixed in the holes 13 and 14 at the peaks of the two corrugations; then the other The front end enters the inside of the electrode bracket from the hole 11 close to the front end of the electrode bracket, and returns to the rear end of the connecting catheter through the lumen inside the electrode bracket and the connecting catheter, and is fixed on the same control piece together with the rear end or on a separate on the controls. In this structure, both the front section and the back section of the adherence adjustment wire 6 pass through the inner lumen of the connecting catheter, and the front and back ends are respectively fixed on corresponding control pieces (referred to as corresponding control pieces). Each of the corresponding control parts can be arranged on the control handle 20, or arranged outside the control handle 20, or two corresponding control parts can also be arranged on the control handle 20, and the other is arranged outside the control handle 20. The front section and the back section of the sticking adjustment wire 6 are respectively controlled by two corresponding control members, so that the contraction degrees of the two corrugations can be separately adjusted. Moreover, the front end and the rear end of the sticking adjustment wire 6 can also be fixed together on the same control member.

As shown in Fig. 20 and Fig. 21, in the structure shown in Fig. 18, the sticking adjustment wire 6 can also be composed of two wires 6A and 6B respectively used to adjust the two corrugations, and the front ends of each wire are respectively fixed on Corresponding to one end of the corrugation, the other end bypasses the corrugation, returns to the inside of the electrode holder from the other end of the corrugation, and returns to the control handle through the lumen inside the electrode holder and the connecting catheter, and then is fixed on the control handle or on the corresponding controls of the peripherals.

In Fig. 20, the front end of the filament 6A is fixed in the hole 13 provided between the two corrugations, the rear end returns to the inside of the electrode holder through the hole 11 close to the front end of the electrode holder, and passes through the inside of the electrode holder and the inside of the connecting catheter. The lumen returns to the control handle, and is then fixed on the corresponding control piece; the front end of the filament 6B is fixed in another hole 14 arranged between the two corrugations, and the rear end passes through the hole 12 near the rear end of the electrode holder. to the inside of the electrode bracket, and return to the control handle via the inside of the electrode bracket and the lumen inside the connecting catheter, and then be fixed on the corresponding control piece. In Fig. 21, the setting of the filament 6B is the same as that in Fig. 20, the front end of the filament 6A is fixed in the hole 11 close to the front end of the electrode holder, and the rear end returns to the hole 13 through the hole 13 arranged between the two corrugations. The inside of the electrode bracket is fixed on the corresponding control part via the inside of the electrode bracket and the lumen inside the connecting catheter. Two corresponding control members respectively fixed to the filaments 6A and 6B can be arranged on the control handle 20 or outside the control handle 20 . Adhesion adjustment wires 6A and 6B are respectively used to control the shrinkage of the two corrugations. The sticking adjustment wires 6A and 6B are respectively controlled by two corresponding control members, so that the contraction degrees of the two corrugations can be separately adjusted. In addition, the corresponding control elements of the filament 6A and the filament 6B can also be the same control element.

Eighth embodiment

In the eighth embodiment shown in Figure 22 and Figure 23, the sticking adjustment wire 6 is two wires 6A' and 6B' respectively used to adjust one corrugation and one section of corrugation (ie one corrugation segment), each wire The front ends of the corrugated/corrugated sections are respectively fixed at one end of the corresponding corrugated/corrugated section, and the other end bypasses the corresponding corrugated/corrugated section, returns to the inside of the electrode holder from the other end of the corrugated/corrugated section, and returns to the electrode holder via the inside of the electrode holder and the lumen inside the connecting catheter. After reaching the control handle, it is fixed on the corresponding control piece. As shown in Figure 23, the front ends of the thin wires 6A' and 6B' are all fixed in the holes 11 near the front end of the electrode holder, and the rear ends 60 of the two thin wires pass through the holes 13 arranged between the two corrugations and close to the holes 11 respectively. The hole 12 at the rear end of the electrode bracket returns to the inside of the electrode bracket, and is finally fixed on the corresponding control piece. The thin wire 6A' is used to control the shrinkage of a single corrugation near the front end of the electrode holder, and the thin wire 6B' is used to control the entire corrugated section. In the illustrated embodiment, the entire corrugated section includes two corrugations, namely The filament 6B' is used to control the degree of shrinkage of the two corrugations. The correspondingly adjusted corrugated section of filament 6B' comprises the correspondingly adjusted single corrugation of filament 6A'. In this embodiment, the corresponding control elements respectively connected to the rear ends of the two wires may also be the same control element.

Combining the seventh embodiment and the eighth embodiment, it can be seen that when the electrode holder has more than two corrugations, the wall-attachment adjustment wire 6 can also be composed of two or more than two wires, and the multiple wires are respectively used for adjusting One or a section of corrugations on the electrode support, one of which includes two or more corrugations, the front end of each wire is respectively fixed at one end of the corresponding corrugation/corrugation section, and the other end bypasses the corrugation/corrugation section, Return to the inside of the electrode holder from the other end of the corrugated/corrugated section, and be fixed on the corresponding control member via the lumen inside the electrode holder and the inside of the connecting catheter. When a wire is used to adjust a single corrugation, its front end is fixed at one end of the corrugation, and the rear end passes through the hole at the other end of the corrugation into the inside of the electrode holder; when a wire is used to adjust a certain section of corrugation, Its front end is fixed on one end of the segment of corrugation, and its rear end penetrates into the inside of the electrode holder through a hole provided at the other end of the segment of corrugation. There may be overlapping between the multiple segments of corrugations controlled by the multiple wires. The structure shown in Figure 20 and Figure 21 is a structure example in which the sticking adjustment wire has two wires, and the two wires are respectively used to adjust the two corrugations on the electrode holder; while the first wire shown in Figure 22 and Figure 23 The structure of the eighth embodiment is a structure example in which the adherence adjustment wire 6 has two wires, and the two wires are respectively used to control one corrugation and one section of corrugation on the electrode bracket.

When multiple control parts are used to separately control different corrugated sections of the electrode support, after the radiofrequency ablation catheter enters the target position, the corresponding corrugated sections of the electrode support can be expanded in sections according to needs, that is, only the corrugated sections that require radio frequency can be changed Therefore, the flexibility of adjusting the diameters of different corrugated sections of the electrode support is increased, and the difficulty of adjusting the radiofrequency ablation catheter to the wall is reduced.

In addition, the rear ends of the above-mentioned multiple wires can also be fixed on the same control member, and the above-mentioned multiple wires are controlled together by the same control member.

Ninth embodiment

As shown in FIG. 24 , the electrode holder of the radiofrequency ablation catheter provided in this embodiment is composed of multiple corrugations with different sizes. The sizes of all the corrugations may be different, or some of the corrugations may be of the same size, while the rest of the corrugations may be of another size. In addition, the multiple corrugations can also be set with increasing sizes from the front end to the rear end of the electrode support, or with decreasing sizes from the front end to the rear end of the electrode support. At this time, the radiofrequency ablation catheter is provided with an adherent adjustment wire 6 composed of multiple wires, and different wires are used to control different parts of the electrode holder, and the corrugation in the corresponding area of the corrugated section can be changed by pulling different wires. size, to achieve partial wall-attachment of the electrode holder. The specific arrangement of the adherence adjustment wire 6 composed of multiple wires can refer to the sixth embodiment and the seventh embodiment, and will not be repeated here.

When a plurality of corrugations are arranged in successively increasing sizes from the front end to the rear end of the electrode support, the radiofrequency ablation catheter using the electrode support is suitable for the situation where the diameter of the target lumen gradually decreases from large to large. For example, the radiofrequency ablation catheter can be used to ablate from a blood vessel with a large diameter into a small branch blood vessel with a small diameter. At this time, the small-diameter corrugated section can be well adhered to the wall by controlling the multiple wires corresponding to the small-diameter corrugated section, so that the small-diameter corrugated section can be used to ablate the branched small blood vessels; The corrugated segment and the small-diameter corrugated segment adhere to the wall at the same time, so that the ablation of large vessels and small vessels is performed simultaneously or sequentially.

When a plurality of corrugations are arranged in successively decreasing sizes from the front end to the rear end of the electrode support, the radiofrequency ablation catheter using the electrode support can be suitable for situations where the diameter of the target lumen gradually increases from small to large. For example, it is suitable for "transurethral system for sympathetic nerve ablation in the renal pelvis area". The catheter enters the bladder through the urethra, and then enters the fallopian tube to reach the renal pelvis area. Well-apposed, small-diameter corrugated segments and fallopian tubes are well-attached, allowing simultaneous ablation of sympathetic nerves near the fallopian tube and renal pelvis region.

In summary, the corrugated radio frequency ablation catheter is provided with an adherence adjustment wire, and by pulling the adhesion adjustment wire backward, the corrugated diameter of the electrode holder can be changed, thereby improving the adherence state of the electrode, so that the radio frequency ablation catheter Suitable for blood vessels of different diameters. Moreover, the above-mentioned adherence adjustment wire can also adopt a multi-wire structure, so as to realize separate control of different corrugated sections of the radiofrequency ablation catheter, and simplify the difficulty of diameter adjustment.

In actual clinical treatment, the radiofrequency ablation catheter and the radiofrequency ablation device provided by the utility model can be applied to nerve ablation of different parts, blood vessels or trachea with different diameters. For example, nerve ablation in the renal artery is used to treat patients with refractory hypertension, nerve ablation in the celiac artery is used to treat patients with diabetes, and for example, nerve ablation in the trachea/bronchus is used to treat asthmatic patients, and vagus nerve in the duodenum Branch ablation is used to treat patients with duodenal ulcer; in addition, it can also be used for ablation of nerves in other blood vessels such as the renal pelvis, pulmonary artery, or the trachea. It should be noted that the radiofrequency ablation catheter provided by the present invention is not limited to the applications listed above in clinical treatment, and can also be used for nerve ablation in other parts.

The radio frequency ablation catheter provided by the utility model is introduced above, and the utility model also provides a radio frequency ablation device including the above radio frequency ablation catheter. In addition to the radio frequency ablation catheter, the radio frequency ablation device also includes a radio frequency ablation host connected to the radio frequency ablation catheter. Among them, the wall-adherence adjustment wire inside the electrode bracket is connected to the control handle after passing through the connecting catheter, and the shape of the electrode bracket can be changed by pulling the wall-attachment adjustment wire through the control handle, so that the electrode bracket can adhere well to the wall of the target lumen with different diameters . In addition, the radio frequency wires and thermocouple wires in the electrode holder are respectively connected to the corresponding circuits in the radio frequency ablation host through connecting catheters, so as to realize radio frequency control and temperature monitoring of multiple electrodes by the radio frequency ablation host. Since the setting of the control handle and the setting of the radiofrequency ablation host can refer to the applicant's published prior patent application, the specific structure thereof will not be described in detail here.

The corrugated radiofrequency ablation catheter and its equipment provided by the present invention have been described in detail above. For those skilled in the art, any obvious changes made to it without departing from the essential spirit of the utility model shall belong to the protection scope of the utility model.

Claims (25)

1. there is a ripple type radio frequency ablation catheter for adherent adjustment silk, there is the connecting duct of strip, be provided with electrode suppor in the front end of described connecting duct, the rear end of described connecting duct is provided with joystick; It is characterized in that:

The ripple type electrode suppor that described electrode suppor is made up of one or more ripple, one or more distribution of electrodes is on ripple;

The back segment of described adherent adjustment silk is slidably disposed in one of them tube chamber of described connecting duct, and its rear end is connected on the control piece that is arranged on described joystick or is connected on the control piece of peripheral hardware; After the leading portion of described adherent adjustment silk passes described electrode suppor outside, through one or more hole of being arranged on described ripple or walk around multiple ripple, then its front end is got back to electrode suppor inside and is fixed.

2. ripple type radio frequency ablation catheter as claimed in claim 1, is characterized in that:

After electrode suppor inside is got back in the front end of described adherent adjustment silk, the tube chamber through described electrode suppor and described connecting duct inside gets back to connecting duct rear end, and is fixed on described joystick or is fixed on described control piece.

3. ripple type radio frequency ablation catheter as claimed in claim 1, is characterized in that:

The front end of described adherent adjustment silk is fixed on described electrode suppor front end.

4. ripple type radio frequency ablation catheter as claimed in claim 2 or claim 3, is characterized in that:

Also comprise the supporting wire in a certain tube chamber being arranged on described connecting duct and described electrode suppor.

5. ripple type radio frequency ablation catheter as claimed in claim 4, is characterized in that:

Also comprise the fixed wire being arranged on described electrode suppor inside.

6. ripple type radio frequency ablation catheter as claimed in claim 4, is characterized in that:

The front end of described supporting wire is provided with developing head and/or soft seal wire.

7. ripple type radio frequency ablation catheter as claimed in claim 4, is characterized in that:

On described joystick or described joystick outside is also provided with for end fixed second control piece with described supporting wire.

8. ripple type radio frequency ablation catheter as claimed in claim 2 or claim 3, is characterized in that:

Also comprise the supporting wire in a certain tube chamber being fixedly installed on described connecting duct and described electrode suppor, described supporting wire is fixed to ripple type in the part of described electrode suppor inside, forms ripple sizing section.

9. ripple type radio frequency ablation catheter as claimed in claim 1, is characterized in that:

After electrode suppor inside is got back in the front end of described adherent adjustment silk, pass described electrode suppor front end, and be fixed on the front end of described electrode suppor or be limited in the outside of front end of described electrode suppor.

10. ripple type radio frequency ablation catheter as claimed in claim 9, is characterized in that:

The front end of described adherent adjustment silk is provided with developing head and/or soft seal wire.

11. ripple type radio frequency ablation catheters as claimed in claim 10, is characterized in that:

Also comprise the fixed wire being arranged on described electrode suppor inside.

12. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Also comprise the supporting wire be arranged in certain tube chamber of described connecting duct and described electrode suppor, and the front end of described adherent adjustment silk is fixed on supporting wire; Or described adherent adjustment silk is the filament that described supporting wire outwards separates.

13. ripple type radio frequency ablation catheters as claimed in claim 12, is characterized in that:

Described supporting wire is fixed to ripple type in the part of described electrode suppor inside, forms ripple sizing section.

14. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Also comprise the fixed wire be arranged in certain tube chamber of described electrode suppor, and the front end of described adherent adjustment silk is fixed on described fixed wire; Or described adherent adjustment silk is the filament that described fixed wire outwards separates.

15. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Described adherent adjustment silk is made up of the multi-filament of more than two or two, multi-filament is respectively used to regulate on described electrode suppor or one section of ripple, wherein one section of ripple comprises two and plural multiple ripple, the front end of every rhizoid is separately fixed at one end of corresponding ripple/bellows segment, after the other end walks around corresponding ripple/bellows segment, and tube chamber that is inner via electrode suppor and connecting duct inside, be then fixed on be arranged on corresponding control piece on described joystick or peripheral hardware control piece on.

16. ripple type radio frequency ablation catheters as claimed in claim 15, is characterized in that:

The corresponding control piece of described multi-filament is same control piece.

17. ripple type radio frequency ablation catheters as claimed in claim 15, is characterized in that:

Overlap is had between the multistage ripple that described multi-filament controls respectively.

18. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Described electrode suppor comprises outer tube, and the excircle of described outer tube is embedded with electrode, and the inside of described outer tube is provided with one or more tube chamber, is wherein respectively arranged with one group of thermocouple wire and radio frequency line in part tube chamber; The inside of each described electrode is provided with one group of radio frequency line and thermocouple wire, described radio frequency line and described Electrode connection, and described thermocouple wire and described electrode insulation are arranged.

19. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

The shape of described ripple is by the broken line of multistage rectilinear(-al), or is made up of multistage curve, or by curve and rectilinear(-al).

20. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Described adherent adjustment silk eccentric setting on described electrode suppor.

21. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

Described electrode is arranged on the crest/wave trough position of described ripple.

22. ripple type radio frequency ablation catheters as claimed in claim 1, is characterized in that:

The shape and size forming multiple ripples of described electrode suppor are different.

23. ripple type radio frequency ablation catheters as claimed in claim 22, is characterized in that:

The multiple ripples forming described electrode suppor are arranged with the size increased progressively successively to the back-end from the front end of electrode suppor, or the multiple ripples forming described electrode suppor are arranged with the size of successively decreasing successively to the back-end from the front end of electrode suppor.

24. 1 kinds of ripple type radio frequency ablation catheters with adherent adjustment silk, have the connecting duct of strip, are provided with electrode suppor in the front end of described connecting duct, the rear end of described connecting duct is provided with joystick; It is characterized in that:

The ripple type electrode suppor that described electrode suppor is made up of multiple ripple, one or more distribution of electrodes is on ripple;

Described adherent adjustment silk is made up of the multi-filament of more than two or two, multi-filament is respectively used to regulate on described electrode suppor or one section of ripple, wherein one section of ripple comprises two and plural multiple ripple, the front end of every rhizoid is separately fixed at one end of corresponding ripple/bellows segment, after the other end walks around corresponding ripple/bellows segment, the tube chamber of and connecting duct inside inner via electrode suppor, be then fixed on be arranged on corresponding control piece on described joystick or peripheral hardware control piece on.

25. 1 kinds of radio-frequency (RF) ablation equipment, is characterized in that the radio frequency ablation catheter comprised in claim 1 ~ 24 described in any one, and the radio-frequency (RF) ablation main frame be connected with described radio frequency ablation catheter.