CN114367000A - Carotid in-situ windowing balloon sheath - Google Patents

Abstract

The invention provides a carotid in-situ windowing balloon sheath, which comprises a balloon sheath body, a sheath core and an injection device, wherein the balloon sheath body is provided with a first opening and a second opening; the balloon sheath body is of a hollow structure with a head and a tail penetrating through, and comprises a first balloon, a sheath tube front section, a second balloon, a sheath tube rear section and a sheath tail, wherein the first balloon is an annular balloon and can be expanded to the outside after being inflated; the second balloon is a hollow flexible bendable structure; the front section of the sheath tube, the rear section of the sheath tube and the sheath tail are all hollow tubular structures; the first balloon, the front sheath tube section, the second balloon, the rear sheath tube section and the sheath tail are sequentially and fixedly connected and communicated; a third balloon is fixed in the sheath tail; the sheath core is of a hollow structure with holes at the head and the tail, and the head of the sheath core is conical; the sheath core is inserted into the balloon sheath body through the third balloon, and the head of the sheath core penetrates out of the first balloon; the injection device is communicated with the first balloon, the second balloon and the third balloon and is responsible for injecting liquid into the first balloon, the second balloon and the third balloon; and the inner wall of the third balloon clings to the sheath core after the third balloon is inflated.

Description

A carotid artery in situ fenestrated balloon sheath

technical field

The invention relates to the field of medical devices, in particular to a carotid artery in-situ fenestration balloon sheath.

Background technique

The sheath can be implanted from the neck by exposing from the carotid artery incision, and then the hard metal puncture needle can be placed on the released large vessel stent through the sheath and punctured to break through the covering of the large vessel stent, and then the covering is expanded with a balloon. The puncture needle on the top forms a hole, and finally a small stent is implanted in the hole to open the carotid artery blood flow, so that blood can normally enter the carotid artery from the aorta.

In these surgical operations, the puncture needle can be quickly, accurately and stably punctured the large vessel stent covering and the needle eye can be quickly, accurately and controllably expanded into a hole of a suitable size so that blood can enter the carotid artery as soon as possible, thereby reducing carotid ischemia. Time is a key factor in reducing surgical complications and improving the success rate of surgery.

The current technique is to first implant the common blood vessel broken bridge, then use a metal cylinder to hold the large artery stent covering, guide the puncture needle to puncture the large artery stent covering, then implant a long guide wire, and then plug the balloon into the needle hole In the middle, the needle eye is enlarged by balloon injection and expansion, and finally a small stent is implanted to open the carotid artery blood supply. There are several problems in this process: 1. The sheath tube and the head of the metal cylinder are ordinary tubular structures. During the operation, the tip is easily displaced or even compresses the blood vessel wall, which makes it impossible to accurately and quickly locate the puncture needle to the large vessel stent covering. 2. Due to the large gap between the sheath tube, the metal cylinder and the puncture needle, the blood in the carotid artery will flow to the patient's body through the above pipeline, resulting in a large amount of blood loss of the patient; 3. The target blood vessel is sometimes too distorted, As a result, the sheath tube and the metal tube cannot be well adapted to the blood vessels; 4. After the puncture needle punctures the large vessel stent covering during the operation, the process of entering and expanding the needle hole with the balloon is complicated and time-consuming, resulting in carotid artery ischemia The time is long, and the balloon itself is expensive, and the use of the balloon increases the cost of the patient.

The above situation will lead to a significant increase in the difficulty of surgery, and even surgical accidents. Therefore, there is an urgent need for a carotid artery in situ fenestration balloon sheath, which can more safely, effectively and quickly complete the carotid artery in situ fenestration operation, better provide a powerful tool for clinical vascular interventional surgery, and provide new surgical methods for the Development also provides new boosts.

SUMMARY OF THE INVENTION

Aiming at the deficiencies in the prior art, the present invention provides a carotid artery in-situ fenestration balloon sheath.

To achieve the above object, the present invention adopts the following technical solutions:

A carotid artery in-situ fenestration balloon sheath, comprising a balloon sheath body, a sheath core and an injection device;

The balloon sheath body is a hollow structure running through the head and tail, including a first balloon, an anterior segment of the sheath, a second balloon, a posterior segment of the sheath and a sheath tail;

The first balloon is a ring-shaped balloon, which can be inflated to the outside after filling; the second balloon is a hollow flexible and bendable structure; the front section of the sheath tube, the rear section of the sheath tube and the sheath tail are all hollow tubular structures;

The first balloon, the anterior section of the sheath tube, the second balloon, the posterior section of the sheath tube and the tail of the sheath are sequentially fixed and connected and communicated;

A third balloon is fixed inside the sheath tail;

The sheath core is a hollow structure with openings at the head and tail, and the head of the sheath core is tapered; the sheath core is inserted into the body of the balloon sheath through the third balloon, and the head penetrates the first balloon;

The injection device is communicated with the first balloon, the second balloon and the third balloon, and the injection device injects liquid into the first balloon, the second balloon and the third balloon;

After the third balloon is inflated, the inner wall of the balloon is close to the sheath core.

In order to optimize the above technical solutions, the specific measures taken also include:

Further, the head end of the sheath core has an expandable structure.

Further, the head and tail of the sheath core are all open, and the head end of the sheath core is approximately circular, and is formed by connecting three crescent structures with the same shape and size head and tail, interlaced and surrounded, and the tips of adjacent crescent structures are arranged between the tips. There is a film, and the crescent structure is movably connected through the film; the object (referring to the small bracket and other structures larger than this circle) passes through the head end of the sheath core, the crescent structure is extruded and expanded, and the three crescent structures are surrounded by a circle. The area of the shape expands accordingly.

Further, the second balloon is a helical annular balloon.

Further, the injection device includes a liquid supply device and a liquid flow channel group; the liquid supply device is a device for loading injection liquid, such as a syringe pump, a syringe, etc.; the liquid flow channel group includes a first liquid flow channel, a second liquid flow channel a flow channel and a third liquid flow channel; the first liquid flow channel and the second liquid flow channel are fixed on the inner wall of the balloon sheath body, and the third liquid flow channel is fixed outside the sheath tail; the first liquid flow channel One end of the channel, the second liquid flow channel and the third liquid flow channel are respectively communicated with the first balloon, the second balloon and the third balloon, respectively, and the other ends are communicated with the injection unit (directly, or through Pipe fittings, etc. are connected with the liquid supply equipment).

Further, the injection device further includes a valve assembly; the valve assembly includes a first liquid inlet valve, a second liquid inlet valve and a third liquid inlet valve; the first liquid inlet valve, the second liquid inlet valve, the third liquid inlet valve The three liquid inlet valves are all fixed on the sheath tail, and are respectively arranged on the first liquid flow channel, the second liquid flow channel and the third liquid flow channel to control the liquid inlet of the corresponding channels.

The beneficial effects of the present invention are:

1. The head of the carotid artery in-situ fenestration balloon sheath provided by the present invention has a first balloon (annular balloon), which can effectively anchor the balloon sheath at the opening of the carotid artery after being implanted in the carotid artery, thereby promoting the The sheath body is not easy to displace and compress the blood vessel wall, which is conducive to the accurate and rapid positioning of the puncture needle to the large blood vessel stent covering, and avoids the puncture needle from stabbing the branch blood vessels due to inaccurate positioning, thus endangering the life and health of the patient;

2. The target blood vessel is sometimes too twisted, which causes the sheath tube used in the prior art to be unable to adapt to the running of the blood vessel. The middle section of the balloon sheath body mentioned in the present invention has a second balloon (spiral ring The balloon sheath has the ability to bend, which is better adapted to the course of the carotid artery, and the outer wall of the second balloon after filling is elastic, which can reduce the damage to the blood vessel wall;

3. The conventional small stent implantation method is to withdraw the metal cylinder from the sheath after the puncture needle punctures the covering of the large vessel stent, and then implant the small stent along the sheath, which is difficult to implant and the implantation process is inconsistent. It is stable, takes a long time to operate, and causes the risk of carotid artery ischemia time of patients being too long; while the sheath core head end of the present invention has an expandable structure, and a small stent can be directly implanted from the expandable structure, which reduces the difficulty of surgery, The operation time is shortened and the operation risk is reduced; at the same time, the head of the sheath core mentioned in the present invention is tapered, and after the puncture needle pierces the coating of the large vessel stent, the sheath core can be directly inserted along the hole pierced by the puncture needle Inside the large vessel stent, the needle hole is enlarged. In the prior art, the balloon is used to expand the needle hole by water injection. The sheath core with a tapered head structure can replace the extra balloon, thereby saving the patient from using an extra ball. the high cost of sacs;

4. The gap between the conventional sheath tube, the metal tube and the puncture needle is large, which causes the blood in the carotid artery to flow to the outside of the patient through the above pipeline, resulting in a large amount of blood loss of the patient. The internal fixation of the sheath tail mentioned in the present invention There is a third balloon, and after filling the third balloon, the gap between the balloon and the sheath core can be filled, thereby reducing or even preventing blood from flowing out of the body.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Figure 1 is a schematic structural diagram of a carotid artery in situ fenestrated balloon sheath;

Fig. 2 is the structural representation of sheath core;

Figure 3 is a schematic structural diagram of a crescent structure;

Fig. 4 is the structural representation of thin film;

Figure 5 is a flow chart of the use of the carotid artery in situ fenestration balloon sheath;

Labels in the figure: 1 is the body of the sheath, 101 is the anterior section of the sheath, 102 is the posterior section of the sheath, 2 is the first balloon, 3 is the tail of the sheath, 301 is the third balloon, and 4 is the second balloon , 501 is the first liquid inlet valve, 502 is the second liquid inlet valve, 503 is the third liquid inlet valve, 504 is the first liquid flow channel, 505 is the second liquid flow channel, 506 is the third liquid flow channel, 6 is the sheath core, 601 is the crescent structure, and 602 is the membrane.

Detailed ways

The present invention will now be described in further detail with reference to the accompanying drawings.

As shown in Figure 1, a carotid artery in-situ fenestration balloon sheath includes a balloon sheath body 1, a sheath core 6 and an injection device;

A carotid artery in-situ fenestration balloon sheath, comprising a balloon sheath body 1, a sheath core 6 and an injection device; the balloon sheath body 1 is a hollow structure running through the head and tail, including a first balloon 2, a sheath tube The front section 101, the second balloon 4, the rear section 102 of the sheath tube and the sheath tail 3; the first balloon 2 is a ring-shaped balloon, which can be expanded to the outside after filling; the second balloon 4 is a hollow flexible and bendable structure; the sheath The anterior section 101 of the tube, the posterior section 102 of the sheath and the tail 3 are all hollow tubular structures; the first balloon 2, the anterior section 101 of the sheath, the second balloon 4, the posterior section 102 of the sheath and the tail 3 are fixedly connected in turn and are A third balloon 301 is fixed inside the sheath tail 3; the injection device is communicated with the first balloon 2, the second balloon 4, and the third balloon 301; the third balloon 301 is filled after the balloon is filled The inner wall of the capsule is close to the sheath core 6;

The sheath core 6 is a hollow structure with openings at the head and tail, and the head of the sheath core 6 is tapered; 2-4, the head end of the sheath core 6 is approximately circular, and is connected by three crescent structures 601 of the same shape and size, which are staggered and surrounded. The tips of adjacent crescent structures 601 are provided with The film 602, the crescent structure 601 is movably connected by the film 602; the small bracket passes through the head end of the sheath core 6, the crescent structure 601 is extruded and expanded, and the area of the circle enclosed by the three crescent structure 601 is enlarged accordingly .

The injection device includes a liquid supply device and a liquid flow channel group; the liquid supply device is a device for loading injection liquid, such as a syringe pump, a syringe, etc.; the liquid flow channel group includes a first liquid flow channel 504, a second liquid flow channel 505 and a third liquid flow channel 506; the first liquid flow channel 504 and the second liquid flow channel 505 are fixed on the inner wall of the balloon sheath body 1, and the third liquid flow channel 506 is fixed outside the sheath tail 3; One ends of the first liquid flow channel 504, the second liquid flow channel 505 and the third liquid flow channel 506 are respectively communicated with the first balloon 2, the second balloon 4 and the third balloon 301, respectively, and the other ends are respectively connected with each other. Connected to the injection unit.

The injection device further includes a valve assembly; the valve assembly includes a first liquid inlet valve 501 , a second liquid inlet valve 502 and a third liquid inlet valve 503 ; the first liquid inlet valve 501 and the second liquid inlet valve 502 The third liquid inlet valve 503 is fixed on the sheath tail 3, and is respectively arranged on the first liquid flow channel 504, the second liquid flow channel 505 and the third liquid flow channel 506 to control the liquid inlet of the corresponding channel.

As shown in Figure 5, the above-mentioned carotid artery in situ fenestration balloon sheath is used by the following methods:

S1. As shown in Figure 5(a)-(b), insert the sheath core 6 into the balloon sheath body 1 from the sheath tail 3, and insert the entire sheath core 6 and the balloon sheath body 1 through the purse of the carotid artery incision along the neck Arterial insertion into the arteries within the aortic arch;

S2. As shown in Figure 5(c)-(d), pull out the sheath core 6, leave the balloon sheath body 1 in the carotid artery, expose the first balloon 2 in the carotid artery, and inject water appropriately according to the blood vessel walking The contrast agent is used to fill the first balloon 2, so that the diameter of the first balloon 2 is larger than the opening of the carotid artery after filling, so that the head end of the balloon sheath body 1 is fixed in the aorta, and the second balloon 4 and the third balloon are filled at the same time. 301;

S3. As shown in Fig. 5(e)-(j), the large vessel stent is implanted into the aorta, and the side end of the large vessel stent covers the carotid artery; the sheath core 6 is inserted into the balloon sheath body 1 from the sheath tail 3 and along the The balloon sheath body 1 enters the carotid artery until the head end of the sheath core 6 is against the stent covering of the large blood vessel, inserts a puncture needle along the inside of the sheath core 6, and punctures the covering after reaching the covering. The needle penetrates the covering and enters the large blood vessel. In the stent, the sheath core 6 with a tapered head is inserted into the large vessel stent along the puncture needle, and then the puncture needle is removed and replaced with a long guide wire that plays a guiding role;

S4. As shown in Fig. 5(k), the small stent enters the large vessel stent through the sheath core 6 along the long guide wire. When the small stent passes through the head end of the sheath core 6, the head end of the sheath core 6 expands outward, so that the small stent It can pass through smoothly; after the small stent is inserted into the large vessel stent along the sheath core 6, the sheath core 6 is withdrawn and the balloon sheath body 1 is further removed to release the small stent; the head end of the small stent enters the cavity covered by the large vessel stent It is connected to the large-vessel stent so that blood flow can flow normally through the large-vessel stent into the small stent and further into the carotid artery.

After the operation is completed, the aqueous contrast agent is extracted from the first balloon 2 so that the diameter of the first balloon 2 is smaller than the opening of the carotid artery, and then the balloon sheath body 1 is taken out from the purse of the carotid artery incision.

It should be noted that the terms such as "up", "down", "left", "right", "front", "rear", etc. quoted in the invention are only for the convenience of description and clarity, and are not used for Limiting the applicable scope of the present invention, the change or adjustment of the relative relationship shall be regarded as the applicable scope of the present invention without substantially changing the technical content.

The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions that belong to the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims (6)

1. A carotid in-situ windowing balloon sheath is characterized by comprising a balloon sheath body (1), a sheath core (6) and an injection device;

the balloon sheath body (1) is of a hollow structure penetrating from head to tail and comprises a first balloon (2), a sheath tube front section (101), a second balloon (4), a sheath tube rear section (102) and a sheath tail (3);

the first balloon (2) is an annular balloon and can be expanded outwards after being inflated; the second balloon (4) is a hollow flexible bendable structure; the sheath front section (101), the sheath rear section (102) and the sheath tail (3) are all hollow tubular structures;

the first balloon (2), the sheath tube front section (101), the second balloon (4), the sheath tube rear section (102) and the sheath tail (3) are sequentially and fixedly connected and communicated;

a third balloon (301) is fixed in the sheath tail (3);

the sheath core (6) is of a hollow structure with holes at the head and the tail, and the head of the sheath core (6) is conical; the sheath core (6) is inserted into the balloon sheath body (1) through the third balloon (301), and the head part of the sheath core penetrates out of the first balloon (2);

the injection device is communicated with the first balloon (2), the second balloon (4) and the third balloon (301);

and the inner wall of the third balloon (301) is tightly attached to the sheath core (6) after the third balloon is inflated.

2. The carotid artery in-situ windowing balloon sheath according to claim 1, characterized in that the head end of the sheath core (6) has an expandable structure.

3. The carotid artery in-situ windowing balloon sheath according to claim 2, characterized in that the head end of the sheath core (6) is formed by connecting three crescent structures (601) with the same shape and size end to end in a staggered and surrounding manner, a film (602) is arranged between the tips of the adjacent crescent structures (601), and the crescent structures (601) are movably connected through the film (602); the object passes through the head end of the sheath core (6), the crescent structures (601) are extruded and expanded outwards, and the area of the circle surrounded by the three crescent structures (601) is expanded.

4. The carotid artery in situ windowing balloon sheath according to claim 1, characterized in that the second balloon (4) is a helical annular balloon.

5. The carotid artery in situ windowing balloon sheath according to claim 1, wherein the injection device comprises a liquid supply device and a set of liquid flow channels; the flow channel set comprises a first flow channel (504), a second flow channel (505), and a third flow channel (506); the first liquid flow channel (504) and the second liquid flow channel (505) are fixed on the inner wall of the balloon sheath body (1), and the third liquid flow channel (506) is fixed outside the sheath tail (3); one end of each of the first liquid flow channel (504), the second liquid flow channel (505) and the third liquid flow channel (506) is respectively communicated with the first balloon (2), the second balloon (4) and the third balloon (301) correspondingly, and the other end of each of the first liquid flow channel, the second liquid flow channel and the third liquid flow channel is communicated with the injection unit.

6. The carotid artery in situ windowing balloon sheath of claim 5, wherein the injection device further comprises a valve assembly; the valve assembly comprises a first liquid inlet valve (501), a second liquid inlet valve (502) and a third liquid inlet valve (503);

the first liquid inlet valve (501), the second liquid inlet valve (502) and the third liquid inlet valve (503) are fixed on the sheath tail (3) and are respectively arranged on the first liquid flow channel (504), the second liquid flow channel (505) and the third liquid flow channel (506).

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