CN102920506A - Multipolar umbrella-shaped radio frequency ablation catheter - Google Patents
Multipolar umbrella-shaped radio frequency ablation catheter Download PDFInfo
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- CN102920506A CN102920506A CN2012103962786A CN201210396278A CN102920506A CN 102920506 A CN102920506 A CN 102920506A CN 2012103962786 A CN2012103962786 A CN 2012103962786A CN 201210396278 A CN201210396278 A CN 201210396278A CN 102920506 A CN102920506 A CN 102920506A
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- slide unit
- umbrella
- radio frequency
- main body
- frequency ablation
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- 238000007674 radiofrequency ablation Methods 0.000 title claims abstract description 34
- 230000005405 multipole Effects 0.000 claims description 22
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 3
- 210000002254 renal artery Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 206010020772 Hypertension Diseases 0.000 description 5
- 210000005036 nerve Anatomy 0.000 description 4
- 230000002889 sympathetic effect Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 210000003734 kidney Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001053 orthosympathetic effect Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000008327 renal blood flow Effects 0.000 description 2
- 230000008660 renal denervation Effects 0.000 description 2
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- 238000002679 ablation Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
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- 238000003745 diagnosis Methods 0.000 description 1
- 239000002934 diuretic Substances 0.000 description 1
- 230000001882 diuretic effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 229960002748 norepinephrine Drugs 0.000 description 1
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- 210000000056 organ Anatomy 0.000 description 1
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Abstract
The invention discloses a multipolar umbrella-shaped radio frequency ablation catheter. The multipolar umbrella-shaped radio frequency ablation catheter comprises a handle, a catheter main body, an umbrella-shaped framework, a center rod and multiple electrodes. Compared with the prior art, the multipolar umbrella-shaped radio frequency ablation catheter can be used for simultaneously ablating multiple sites, thereby greatly improving the working efficiency.
Description
Technical field
The present invention relates to electrosurgery, relate in particular to a kind of for arteriorenal sympathetic nerve is carried out denervated radio frequency ablation catheter.
Background technology
Intractable hypertension, namely use still unmanageable hypertension (sBP 〉=160mmHg) of medicine more than 3 kinds (all having used a diuretic), more common clinically, its paathogenic factor is numerous, pathogenesis is indefinite, medication effect is very poor, and diagnosis and treatment technology are still not mature enough, become one of great difficult problem of hypertension therapeutic.Because kidney as a receptor of nervus centralis, under orthosympathetic effect, can be secreted more feritin and activate the RAAS system, causes that renal blood flow descends, and causes the storage of water sodium to be stayed, and causes at last hypertension; Simultaneously, kidney spreads out of organ as nerve, and sympathetic excitement is communicated to brain conversely, causes bad general reaction.Therefore, intractable hypertension is used the renal denervation treatment.The article that was published on the New England Journal of Medicine in 2009 such as people such as Schlaich, shown through after the renal denervation treatment, the noradrenaline levels decline 50-75% that discharges in the nephridial tissue, the feritin level descends 50% in the blood plasma, the renal blood flow amount increases by 57%, find that simultaneously this treatment has effect to the central nervous system, can significantly improve nervimuscular galvanic reflex.
The renal artery radiofrequency ablation art is a kind of by the electrode catheter intravascular is sent into specific part in the renal artery, discharges radio-frequency current and causes renal artery sympathetic nerve local solidification downright bad, reaches denervated Interventional technology.The radio-frequency current damage range is little, can not cause body harm, so the renal artery radiofrequency ablation art has become the orthosympathetic method of a kind of effective removal renal artery.At present, the one pole radio frequency ablation catheter for renal artery has appearred to implement the renal artery radiofrequency ablation operation.The head of one pole radio frequency ablation catheter for renal artery has single electrode, can carry out melting of single-point location to the renal artery sympathetic nerve, because once-through operation can only be melted a some position, therefore, work efficiency is lower.
Given this, the invention provides a kind of new multi-electrode radio frequency ablation catheter.
Summary of the invention
In view of the defects of prior art, of the present inventionly provide at present a kind of multipole umbrella radio frequency ablation catheter, to realize and to melt a plurality of sites simultaneously.
Technical scheme of the present invention is as follows:
A kind of multipole umbrella radio frequency ablation catheter comprises handle, catheter main body, umbrella skeleton, center-pole, a plurality of electrode;
Described umbrella skeleton comprises some arcuation elastic strips, and the first end of described arcuation elastic strip is fixed near center-pole front end or the front end, and the second end of described arcuation elastic strip is fixed on the sliding shoe; Described sliding shoe is slidingly connected to described center-pole; Described electrode is arranged on the described umbrella skeleton;
The inside of described handle and catheter main body is set to hollow, is provided with in described handle and the catheter main body for the electrical connecting element that described electrode is electrically connected to the radio-frequency current generator;
Described center-pole is positioned at the inside of described handle and catheter main body; Described handle comprises the first slide unit and second slide unit of mutual socket, and the rear end of described catheter main body is installed on described the first slide unit, and the rear end of described center-pole is fixedly connected on described the second slide unit; Described the first slide unit, the second slide unit, center-pole are configured to by the mutual slip of described the first slide unit and the second slide unit so that described umbrella skeleton is incorporated into described catheter main body and stretches out described catheter main body.
Preferably, the handle main body that described the second slide unit grips for being used for user, described the first slide unit is socketed on the inside of the second slide unit.More preferably, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected respectively with described a plurality of electrodes, and the other end is electrically connected with described adapter; Described adapter is installed in described the second slide unit.
Preferably, the handle main body that described the first slide unit grips for being used for user, described the second slide unit is socketed on the inside of the first slide unit.More preferably, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected respectively with described a plurality of electrodes, and the other end is electrically connected with described adapter; Described adapter is installed in described the first slide unit.
Preferably, the material of described arcuation elastic strip is super-elastic shape memory alloy.More preferably, described super-elastic shape memory alloy is the NiTi marmem.
Preferably, the number of described electrode is 2-10.
Preferably, the number of described arcuation elastic strip is 2-10.
Compared with prior art, beneficial effect of the present invention is as follows:
A kind of multipole umbrella radio frequency ablation catheter provided by the present invention can melt a plurality of sites simultaneously, thereby greatly provide work efficiency.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand fully purpose of the present invention, feature and effect.
Description of drawings
Fig. 1 is the handle arrangement schematic diagram of the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
Fig. 2 is the umbrella skeleton structural representation partly of the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
Fig. 3 is the structural representation of another kind of user mode of umbrella skeleton part of the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
Fig. 4 is the handle arrangement schematic diagram of the second embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
The specific embodiment
The present invention will be further described with specific embodiment by reference to the accompanying drawings in the below:
Embodiment 1
Fig. 1-Fig. 3 shows the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.As shown in Figure 1 to Figure 3, the multipole umbrella radio frequency ablation catheter in the present embodiment comprises handle 1, catheter main body 2, umbrella skeleton 3, center-pole 4, electrode 5.
As shown in Figure 1, the inside of handle 1 and catheter main body 2 is set to hollow, and inside is provided with for the electrical connecting element (not shown) that described electrode is electrically connected to the radio-frequency current generator; Center-pole 4 is positioned at the inside of handle 1 and catheter main body 2; Handle 1 comprises the first slide unit 11 and second slide unit 12 of mutual socket, and the rear end of catheter main body 2 is installed on the first slide unit 11, and the rear end of center-pole 4 is fixedly connected on the second slide unit 12.
As shown in Figure 2, umbrella skeleton 3 comprises some arcuation elastic strips, the first end of arcuation elastic strip is fixed near center-pole front end or the front end the fixed block 6, and the second end of arcuation elastic strip is fixed on the sliding shoe 7, and sliding shoe 7 slidably is socketed on the center-pole 4; Electrode 5 is positioned on the umbrella skeleton 3.In this embodiment, the material of arc elastic bar is the NiTi marmem; The number of arcuation elastic strip is two, and an electrode is set on each arcuation elastic strip.Here only for for example, during implementation, can at the arcuation elastic strip electrode be set according to actual needs, as a plurality of electrodes can be set.
In this embodiment, the handle main body that the second slide unit 12 grips for being used for user, the first slide unit 11 is socketed on the inside of the second slide unit 12.When user gripping handle main body and when promoting the first slide unit 11 and moving forward or backward, because the effect of center-pole 4, so that catheter main body 2 can be taken in or stretch out to umbrella skeleton 3.Because an end of the arc elastic bar of umbrella skeleton 3 is for slidably holding, when umbrella skeleton 3 is not subjected to External Force Acting, for example umbrella skeleton 3 stretch out catheter main body 2 and be not subjected to catheter main body 2 tube wall do the time spent, umbrella skeleton 3 is in the swelling state of nature, as shown in Figure 3.Under this state, the electrode 5 on the umbrella skeleton 3 can be near the site that needs in the blood vessel to melt.When umbrella skeleton 3 income catheter main body 2, the slidably end of the arc elastic bar of umbrella skeleton 3 slides along center-pole 4, so that the axial length of whole umbrella skeleton 3 is elongated, whole umbrella skeleton 3 is in by the contraction state of the tube wall of catheter main body 2 compression, as shown in Figure 2.Under this state, just can control radio frequency ablation catheter catheter main body 2 is moved in blood vessel.
In this specific embodiment, described radio-frequency (RF) ablation pipe also comprises the thermocouple (not shown), links to each other with at least one electrode, is used for detecting temperature.Also be provided with in handle 1 and the catheter main body 2 for the wire that transmits the thermocouple signal of telecommunication.
Need to prove, Fig. 1 to Fig. 3 only plays the effect of signal, the shape and size of the described multipole umbrella radio frequency ablation catheter of the present embodiment is not limited.
Fig. 4 shows the second embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.As shown in Figure 4, multipole umbrella radio frequency ablation catheter and embodiment 1 difference in this specific embodiment are that the first slide unit 11 is that the second slide unit 12 is socketed on the inside of the first slide unit 11 for the handle main body of user gripping.In this embodiment, when user gripping handle main body and when promoting the second slide unit 12 and moving forward or backward, because the effect of center-pole 4, so that catheter main body 2 can be taken in or stretch out to umbrella skeleton 3.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can design according to the present invention make many modifications and variations.Therefore, all those skilled in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (9)
1. a multipole umbrella radio frequency ablation catheter is characterized in that, comprises handle, catheter main body, umbrella skeleton, center-pole, a plurality of electrode;
Described umbrella skeleton comprises some arcuation elastic strips, and the described first end of described arcuation elastic strip is fixed near described center-pole front end or the front end, and the second end of described arcuation elastic strip is fixed on the sliding shoe; Described sliding shoe is slidingly connected to described center-pole; Described electrode is arranged on the described umbrella skeleton;
The inside of described handle and catheter main body is set to hollow, is provided with in described handle and the catheter main body for the electrical connecting element that described electrode is electrically connected to the radio-frequency current generator;
Described center-pole is positioned at the inside of described handle and catheter main body; Described handle comprises the first slide unit and second slide unit of mutual socket, and the rear end of described catheter main body is installed on described the first slide unit, and the rear end of described center-pole is fixedly connected on described the second slide unit; Described the first slide unit, the second slide unit, center-pole are configured to by the mutual slip of described the first slide unit and the second slide unit so that described umbrella skeleton is incorporated into described catheter main body and stretches out described catheter main body.
2. multipole umbrella radio frequency ablation catheter according to claim 1 is characterized in that, the handle main body that described the second slide unit grips for being used for user, and described the first slide unit is socketed on the inside of the second slide unit.
3. multipole umbrella radio frequency ablation catheter according to claim 2, it is characterized in that, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected respectively with described a plurality of electrodes, and the other end is electrically connected with described adapter; Described adapter is installed in described the second slide unit.
4. multipole umbrella radio frequency ablation catheter according to claim 1 is characterized in that, the handle main body that described the first slide unit grips for being used for user, and described the second slide unit is socketed on the inside of the first slide unit.
5. multipole umbrella radio frequency ablation catheter according to claim 4, it is characterized in that, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected respectively with described a plurality of electrodes, and the other end is electrically connected with described adapter; Described adapter is installed in described the first slide unit.
6. multipole umbrella radio frequency ablation catheter according to claim 1 is characterized in that, the material of described arcuation elastic strip is super-elastic shape memory alloy.
7. multipole umbrella radio frequency ablation catheter according to claim 6 is characterized in that, described super-elastic shape memory alloy is the NiTi marmem.
8. multipole umbrella radio frequency ablation catheter according to claim 1 is characterized in that, the number of described electrode is 2-10.
9. multipole umbrella radio frequency ablation catheter according to claim 1 is characterized in that, the number of described arcuation elastic strip is 2-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396278.6A CN102920506B (en) | 2012-10-17 | 2012-10-17 | A kind of multipole umbrella radio frequency ablation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210396278.6A CN102920506B (en) | 2012-10-17 | 2012-10-17 | A kind of multipole umbrella radio frequency ablation catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102920506A true CN102920506A (en) | 2013-02-13 |
| CN102920506B CN102920506B (en) | 2015-11-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210396278.6A Active CN102920506B (en) | 2012-10-17 | 2012-10-17 | A kind of multipole umbrella radio frequency ablation catheter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193498A (en) * | 2015-09-18 | 2015-12-30 | 先健科技(深圳)有限公司 | Ablation catheter device |
| CN106691585A (en) * | 2016-12-24 | 2017-05-24 | 迈德医疗科技（上海） 有限公司 | Radiofrequency ablation electrode assembly |
| CN106923815A (en) * | 2015-10-08 | 2017-07-07 | 韦伯斯特生物官能(以色列)有限公司 | Conduit with the membrane type ridge for pulmonary vein isolation |
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| US5345936A (en) * | 1991-02-15 | 1994-09-13 | Cardiac Pathways Corporation | Apparatus with basket assembly for endocardial mapping |
| EP1297795A1 (en) * | 2001-09-28 | 2003-04-02 | Shutaro Satake | Radiofrequency thermal balloon catheter |
| CN1533748A (en) * | 2003-03-28 | 2004-10-06 | 佐竹修太郎 | Radio frequency thermal balloon catheter |
| WO2004087249A2 (en) * | 2003-03-28 | 2004-10-14 | C.R. Bard, Inc. | Braided mesh catheter |
| CN201223445Y (en) * | 2008-06-23 | 2009-04-22 | 北京有色金属研究总院 | Radio frequency ablation catheter |
| CN202069688U (en) * | 2011-03-11 | 2011-12-14 | 北京天助畅运医疗技术股份有限公司 | Radio frequency ablation electrode capable of treating resistant hypertension |
| WO2012068471A1 (en) * | 2010-11-19 | 2012-05-24 | Boston Scientific Scimed, Inc. | Renal nerve detection and ablation apparatus and method |
| CN202386778U (en) * | 2011-11-29 | 2012-08-22 | 北京天助畅运医疗技术股份有限公司 | Radio-frequency melting device |
-
2012
- 2012-10-17 CN CN201210396278.6A patent/CN102920506B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5345936A (en) * | 1991-02-15 | 1994-09-13 | Cardiac Pathways Corporation | Apparatus with basket assembly for endocardial mapping |
| EP1297795A1 (en) * | 2001-09-28 | 2003-04-02 | Shutaro Satake | Radiofrequency thermal balloon catheter |
| CN1533748A (en) * | 2003-03-28 | 2004-10-06 | 佐竹修太郎 | Radio frequency thermal balloon catheter |
| WO2004087249A2 (en) * | 2003-03-28 | 2004-10-14 | C.R. Bard, Inc. | Braided mesh catheter |
| CN201223445Y (en) * | 2008-06-23 | 2009-04-22 | 北京有色金属研究总院 | Radio frequency ablation catheter |
| WO2012068471A1 (en) * | 2010-11-19 | 2012-05-24 | Boston Scientific Scimed, Inc. | Renal nerve detection and ablation apparatus and method |
| CN202069688U (en) * | 2011-03-11 | 2011-12-14 | 北京天助畅运医疗技术股份有限公司 | Radio frequency ablation electrode capable of treating resistant hypertension |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193498A (en) * | 2015-09-18 | 2015-12-30 | 先健科技(深圳)有限公司 | Ablation catheter device |
| CN106923815A (en) * | 2015-10-08 | 2017-07-07 | 韦伯斯特生物官能(以色列)有限公司 | Conduit with the membrane type ridge for pulmonary vein isolation |
| CN106923815B (en) * | 2015-10-08 | 2021-12-10 | 韦伯斯特生物官能(以色列)有限公司 | Catheter with membrane-type spine for pulmonary vein isolation |
| CN106691585A (en) * | 2016-12-24 | 2017-05-24 | 迈德医疗科技（上海） 有限公司 | Radiofrequency ablation electrode assembly |
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| Publication number | Publication date |
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| CN102920506B (en) | 2015-11-25 |
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Inventor after: Sheng Weiwen Inventor after: Wang Guohui Inventor after: Qin Jie Inventor after: Wang Li Inventor after: Zhang Kun Inventor before: Sheng Weiwen Inventor before: Wang Guohui Inventor before: Qin Jie Inventor before: Wang Li |
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