CN102940524A - Balloon dilation-type multi-electrode radio-frequency ablation catheter - Google Patents
Balloon dilation-type multi-electrode radio-frequency ablation catheter Download PDFInfo
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- CN102940524A CN102940524A CN2012103960507A CN201210396050A CN102940524A CN 102940524 A CN102940524 A CN 102940524A CN 2012103960507 A CN2012103960507 A CN 2012103960507A CN 201210396050 A CN201210396050 A CN 201210396050A CN 102940524 A CN102940524 A CN 102940524A
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- electrode
- frequency ablation
- ablation catheter
- radio frequency
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Abstract
The invention provides a balloon dilation-type multi-electrode radio-frequency ablation catheter which comprises a handle, a catheter body, a balloon and a plurality of electrodes, wherein the electrodes are arranged on the outer surface of the balloon, the balloon is positioned at the front end of the catheter body, the handle is mounted at the rear end of the catheter body, and electrical connection elements are arranged in the handle and the catheter body and used for electrically connecting the electrodes to a radio-frequency current generator. The balloon dilation-type multi-electrode radio-frequency ablation catheter is characterized in that a liquid delivery pipe is arranged in the catheter body and connected with the balloon, liquid delivery parts are arranged on the handle and used for introducing a liquid into the liquid delivery pipe, and the liquid delivery parts, the liquid delivery pipe and the inner cavity of the balloon form closed passages which are communicated with one another. The multi-electrode radio-frequency ablation catheter provided by the invention can perform ablation at multiple sites at the same time, so that the work efficiency is greatly increased.
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, technical problem to be solved by this invention provides a kind of multi-electrode radio frequency ablation catheter that can melt a plurality of sites simultaneously.
Multi-electrode radio frequency ablation catheter provided by the invention comprises handle, catheter main body, sacculus and a plurality of electrode, described a plurality of electrode arrangement is in the outer surface of described sacculus, described sacculus is positioned at the front end of described catheter main body, the rear end of described catheter main body is installed on described handle, is provided with in described handle and the catheter main body for the electrical connecting element that described a plurality of tip electrodes is electrically connected to respectively the radio-frequency current generator; In addition, also be provided with the tube for transfusion that links to each other with described sacculus in the described catheter main body, also be provided with on the described handle for the infusion part of liquid being inputted described tube for transfusion, described infusion part, tube for transfusion, the inner closed channel that is interconnected that forms of sacculus.
A crucial part of multi-electrode radio frequency ablation catheter provided by the present invention is to adopt sacculus to carry a plurality of electrodes.Be not in contraction state during the full liquid of sacculus, under contraction state, the operator can operate this radio frequency ablation catheter makes sacculus arrive desired locations in the renal artery.Then by infusion part and tube for transfusion that liquid is full to sacculus, therefore sacculus expands and presses close to blood vessel, the site that a plurality of electrodes that carry on its surface melt near a plurality of needs also so respectively, thus a plurality of sites are melted simultaneously, greatly increase work efficiency.
Preferably, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected with described electrode respectively, and the other end is electrically connected with described adapter respectively; Described adapter is installed in the described handle.Described connecting line can be wrapped in the insulation outer tube and become a branch ofly, also can be separated from each other, and connects independently of one another described electrode and adapter.
Preferably, described infusion part is the outside body that stretches to that is positioned on the housing of described handle, and described tube for transfusion is communicated with described body and forms the passage for liquid communication that seals.More preferably, the outer end of described body is arranged for the interface that joins with syringe.
Preferably, described electrode is fixedly attached on the outer surface of described sacculus; Perhaps, described multi-electrode radio frequency ablation catheter also comprises wire rack mount, and described electrode is installed on the described wire rack mount, the described sacculus of described wire rack mount outsourcing.
Preferably, described sacculus adopts elastomeric material to make.More preferably, described elastomeric material is plastics.
In the present invention, described liquid is preferably water or normal saline or contrast agent.The preferred number of described electrode is 3-16.
Multi-electrode 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 a kind of structural representation of the preferred specific embodiment of the handle of radio frequency ablation catheter of the present invention.
Fig. 2 is a kind of cross sectional representation of the preferred specific embodiment of the catheter main body of radio frequency ablation catheter of the present invention.
Fig. 3 is the structural representation (sacculus is in contraction state) of a kind of preferred specific embodiment of the sacculus of radio frequency ablation catheter of the present invention and electrode.
Fig. 4 is the structural representation (sacculus is in swelling state) of a kind of preferred specific embodiment of the sacculus of radio frequency ablation catheter of the present invention and electrode.
The specific embodiment
Fig. 1-Fig. 4 shows a kind of preferred specific embodiment of radio frequency ablation catheter provided by the present invention.
Such as Fig. 1-shown in Figure 4, radio frequency ablation catheter in this specific embodiment comprises handle 1, catheter main body 2, sacculus 3, a plurality of electrode 4, electrode 4 is arranged in the outer surface of sacculus 3, sacculus 3 is positioned at the front end of catheter main body 2, the rear end of catheter main body 2 is installed on handle 1, is provided with in handle 1 and the catheter main body 2 for the electrical connecting element that a plurality of electrodes 4 is electrically connected to respectively the radio-frequency current generator.Electrical connecting element comprises many connecting lines 6 and adapter 5, an end of many connecting lines 6 be electrically connected with a plurality of electrodes 4 respectively, the other end is electrically connected with adapter 5; Adapter 5 is installed in the handle 1, is used for electrode 4 is connected to the radio-frequency current generator.
In addition, also be provided with the tube for transfusion 7 that links to each other with sacculus 3 in the catheter main body 2, also be provided with on the handle 1 for the infusion part 8 of liquid being inputted tube for transfusion 7, infusion part 8, tube for transfusion 7, the sacculus 3 inner closed channels that are interconnected that form.The path of this closed channel and connecting line 6 is separate.Therefore, in the inside of catheter main body 2, except comprising this closed channel, also leave the space that connecting line 6 is set.Connecting line 6 can by be wrapped in insulation become in the outer tube 9 a branch of, will be as depicted in figs. 1 and 2; Connecting line 6 also can be separated from each other, independently of one another connection electrode 4 and adapter 5.
In this specific embodiment, infusion part 8 is the outside body that stretches on the housing that is positioned at handle 1, and tube for transfusion 7 is communicated with and forms the passage that is used for liquid communication of sealing with this body.The outer end 10 of infusion part 8 is arranged for the interface that joins with syringe.Like this, in the time of sacculus 3 need to being expanded, suction can be had the syringe of liquid (for example water) to be directly connected to the outer end 10 of infusion part 8, pushing syringe makes liquid enter sacculus 3, thereby sacculus 3 is expanded.
In this specific embodiment, electrode 4 is arranged in the outer surface of sacculus 3.The a plurality of neural site that need to melt can be arranged to correspond respectively in the spacing of electrode 4 and orientation.Electrode 4 may be fixedly attached on the outer surface of sacculus 3, and the expansion of sacculus 3 is directly carried electrode 4 and together moved.Also can wire rack mount be set in addition again, electrode 4 is installed on the wire rack mount, wire rack mount outsourcing sacculus 3, and when sacculus 3 expanded, sacculus 3 made it expansion against wire rack mount, thus 4 motions of band moving electrode.
In this specific embodiment, for the ease of expansion and the contraction of sacculus 3, sacculus 3 adopts elastomeric material, makes such as plastics.
In this specific embodiment, radio frequency ablation catheter 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 catheter main body 2 and the handle 1 for the wire that transmits the thermocouple signal of telecommunication.
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 (10)
1. balloon expandable formula multi-electrode radio frequency ablation catheter, it is characterized in that, comprise handle, catheter main body, sacculus and a plurality of electrode, described a plurality of electrode arrangement is in the outer surface of described sacculus, described sacculus is positioned at the described front end of described catheter main body, the rear end of described catheter main body is installed on described handle, is provided with in described handle and the catheter main body for the electrical connecting element that described a plurality of tip electrodes is electrically connected to respectively the radio-frequency current generator; In addition, also be provided with the tube for transfusion that links to each other with described sacculus in the described catheter main body, also be provided with on the described handle for the infusion part of liquid being inputted described tube for transfusion, described infusion part, tube for transfusion, the inner closed channel that is interconnected that forms of sacculus.
2. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described electrical connecting element comprises many connecting lines and adapter, and an end of described connecting line is electrically connected with described electrode respectively, and the other end is electrically connected with described adapter respectively; Described adapter is installed in the described handle.
3. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described infusion part is the outside body that stretches to that is positioned on the housing of described handle, and described tube for transfusion is communicated with described body and forms the passage for liquid communication that seals.
4. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 3, wherein, the outer end of described body is arranged for the interface that joins with syringe.
5. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described electrode is fixedly attached on the outer surface of described sacculus.
6. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described multi-electrode radio frequency ablation catheter also comprises wire rack mount, described electrode is installed on the described wire rack mount, the described sacculus of described wire rack mount outsourcing.
7. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described sacculus adopts elastomeric material to make.
8. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described elastomeric material is plastics.
9. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, described liquid is water or normal saline or contrast agent.
10. balloon expandable formula multi-electrode radio frequency ablation catheter as claimed in claim 1, wherein, the number of described electrode is 3-16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210396050.7A CN102940524B (en) | 2012-10-17 | 2012-10-17 | A kind of balloon dilation-type multi-electrode radio-frequency ablation catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210396050.7A CN102940524B (en) | 2012-10-17 | 2012-10-17 | A kind of balloon dilation-type multi-electrode radio-frequency ablation catheter |
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| CN102940524A true CN102940524A (en) | 2013-02-27 |
| CN102940524B CN102940524B (en) | 2015-09-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| WO2021134154A1 (en) * | 2019-12-30 | 2021-07-08 | 乐普（北京）医疗器械股份有限公司 | Expanding non-implanted atrial shunt device |
| CN113081246A (en) * | 2021-03-31 | 2021-07-09 | 哈尔滨医科大学 | Ablation catheter and radio frequency catheter system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443470A (en) * | 1992-05-01 | 1995-08-22 | Vesta Medical, Inc. | Method and apparatus for endometrial ablation |
| WO2000066021A1 (en) * | 1999-05-04 | 2000-11-09 | Curon Medical, Inc. | Systems and methods for treating the cardia of the stomach and adjoining tissue regions in the esophagus |
| CN2902214Y (en) * | 2006-03-13 | 2007-05-23 | 尤铭德 | Multi-purpose plasma medical electrode apparatus |
| CN101919729A (en) * | 2010-09-10 | 2010-12-22 | 刘小平 | Temperature-controlled ablation device and use thereof |
| WO2011130534A2 (en) * | 2010-04-14 | 2011-10-20 | Boston Scientific Scimed, Inc. | Renal artery denervation apparatus employing helical shaping arrangement |
| US20120029512A1 (en) * | 2010-07-30 | 2012-02-02 | Willard Martin R | Balloon with surface electrodes and integral cooling for renal nerve ablation |
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2012
- 2012-10-17 CN CN201210396050.7A patent/CN102940524B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443470A (en) * | 1992-05-01 | 1995-08-22 | Vesta Medical, Inc. | Method and apparatus for endometrial ablation |
| WO2000066021A1 (en) * | 1999-05-04 | 2000-11-09 | Curon Medical, Inc. | Systems and methods for treating the cardia of the stomach and adjoining tissue regions in the esophagus |
| CN2902214Y (en) * | 2006-03-13 | 2007-05-23 | 尤铭德 | Multi-purpose plasma medical electrode apparatus |
| WO2011130534A2 (en) * | 2010-04-14 | 2011-10-20 | Boston Scientific Scimed, Inc. | Renal artery denervation apparatus employing helical shaping arrangement |
| US20120029512A1 (en) * | 2010-07-30 | 2012-02-02 | Willard Martin R | Balloon with surface electrodes and integral cooling for renal nerve ablation |
| CN101919729A (en) * | 2010-09-10 | 2010-12-22 | 刘小平 | Temperature-controlled ablation device and use thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10842560B2 (en) | 2017-09-08 | 2020-11-24 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| US11925409B2 (en) | 2017-09-08 | 2024-03-12 | Zidan Medical Inc. | Devices and methods for treating lung tumors |
| WO2021134154A1 (en) * | 2019-12-30 | 2021-07-08 | 乐普（北京）医疗器械股份有限公司 | Expanding non-implanted atrial shunt device |
| CN113081246A (en) * | 2021-03-31 | 2021-07-09 | 哈尔滨医科大学 | Ablation catheter and radio frequency catheter system |
| CN113081246B (en) * | 2021-03-31 | 2022-05-10 | 哈尔滨医科大学 | Radio frequency catheter system |
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| CN102940524B (en) | 2015-09-16 |
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