CN102940524B - A kind of balloon dilation-type multi-electrode radio-frequency ablation catheter - Google Patents
A kind of balloon dilation-type multi-electrode radio-frequency ablation catheter Download PDFInfo
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- CN102940524B CN102940524B CN201210396050.7A CN201210396050A CN102940524B CN 102940524 B CN102940524 B CN 102940524B CN 201210396050 A CN201210396050 A CN 201210396050A CN 102940524 B CN102940524 B CN 102940524B
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- ablation catheter
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Abstract
The invention provides a kind of balloon dilation-type multi-electrode radio-frequency ablation catheter, comprise handle, catheter main body, sacculus and multiple electrode, described multiple 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 the electrical connecting element for described multiple tip electrode being electrically connected to respectively radio-frequency current generator in described handle and catheter main body; In addition, be also provided with the tube for transfusion be connected with described sacculus in described catheter main body, described handle is also provided with the infusion part for liquid being inputted described tube for transfusion, described infusion part, tube for transfusion, balloon interior form the closed channel be interconnected.Multielectrode recoding ablation catheter provided by the present invention, can melt multiple site simultaneously, thus greatly provide work efficiency.
Description
Technical field
The present invention relates to electrosurgery, particularly relating to a kind of for carrying out denervated radio frequency ablation catheter to arteriorenal sympathetic nerve.
Background technology
Intractable hypertension, namely more than 3 kinds medicines (all having used a diuretic) still unmanageable hypertension (sBP >=160mmHg) is used, more common clinically, its paathogenic factor is numerous, pathogenesis is indefinite, medication effect is very poor, and Diagnosis and Treat technology is still not mature enough, one of great difficult problem becoming hypertension therapeutic.Because kidney is as a receptor of nervus centralis, under orthosympathetic effect, more feritin can be secreted and activate RAAS system, cause renal blood flow to decline, cause water sodium to store up and stay, finally cause blood pressure to raise; Meanwhile, kidney spreads out of organ as nerve, and sympathetic excitement is communicated to brain conversely, causes bad general reaction.Therefore, intractable hypertension application renal denervation is treated.To be published in the article on New England Journal of Medicine in 2009 as people such as Schlaich, show after renal denervation treatment, the noradrenaline levels decline 50-75% of release in nephridial tissue, in blood plasma, renin level declines 50%, renal blood flow amount increases by 57%, find that this treatment has effect to central nervous system simultaneously, can significantly improve nervimuscular galvanic reflex.
Renal artery radiofrequency ablation art is a kind of by electrode catheter intravascular is sent into specific part in renal artery, and release radio-frequency current causes renal artery sympathetic nerve local solidification downright bad, reaches denervated interventional techniques.Radio-frequency current damage range is little, and body can not be caused to endanger, and therefore renal artery radiofrequency ablation art has become a kind of orthosympathetic method of effective removal renal artery.At present, occurred that one pole radio frequency ablation catheter for renal artery is to implement 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 One-Point Location to renal artery sympathetic nerve, and 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 multielectrode recoding ablation catheter.
Summary of the invention
In view of the above-mentioned defect of prior art, technical problem to be solved by this invention be to provide a kind of can simultaneously to the multielectrode recoding ablation catheter that multiple site is melted.
Multielectrode recoding ablation catheter provided by the invention comprises handle, catheter main body, sacculus and multiple electrode, described multiple 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 the electrical connecting element for described multiple tip electrode being electrically connected to respectively radio-frequency current generator in described handle and catheter main body; In addition, be also provided with the tube for transfusion be connected with described sacculus in described catheter main body, described handle is also provided with the infusion part for liquid being inputted described tube for transfusion, described infusion part, tube for transfusion, balloon interior form the closed channel be interconnected.
A crucial part of multielectrode recoding ablation catheter provided by the present invention adopts sacculus to carry multiple electrode.Be in contraction state during the full liquid of sacculus, in a contracted state, operator can operate this radio frequency ablation catheter makes sacculus arrive desired locations in renal artery.Then by infusion part and tube for transfusion, liquid is filled sacculus, therefore sacculus expands and presses close to blood vessel, multiple electrodes that its surface is carried also therefore respectively near the site that multiple needs melt, thus melt multiple site simultaneously, greatly increase work efficiency.
Preferably, described electrical connecting element comprises many connecting lines and adapter, and one 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 described handle.Described connecting line can be wrapped in insulation outer tube and become a branch of, also can be separated from each other, connect described electrode and adapter independently of one another.
Preferably, described infusion part is the body stretching to outside be positioned on the housing of described handle, and described tube for transfusion is communicated with described body and forms the passage for liquid communication closed.More preferably, the outer end of described body is arranged for the interface connected with syringe.
Preferably, described electrode is fixedly attached on the outer surface of described sacculus; Or described multielectrode recoding ablation catheter also comprises wire rack mount, described electrode is arranged in described wire rack mount, sacculus described in 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.
Multielectrode recoding ablation catheter provided by the present invention, can melt multiple site simultaneously, thus 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 object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of preferred detailed description of the invention of the handle of radio frequency ablation catheter of the present invention.
Fig. 2 is the cross sectional representation of a kind of preferred detailed description of the invention 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 the sacculus of radio frequency ablation catheter of the present invention and a kind of preferred detailed description of the invention of electrode.
Fig. 4 is the structural representation (sacculus is in swelling state) of the sacculus of radio frequency ablation catheter of the present invention and a kind of preferred detailed description of the invention of electrode.
Detailed description of the invention
Fig. 1-Fig. 4 shows the preferred detailed description of the invention of one of radio frequency ablation catheter provided by the present invention.
As Figure 1-Figure 4, radio frequency ablation catheter in this detailed description of the invention comprises handle 1, catheter main body 2, sacculus 3, multiple 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 the electrical connecting element for multiple electrode 4 being electrically connected to respectively radio-frequency current generator in handle 1 and catheter main body 2.Electrical connecting element comprises many connecting lines 6 and adapter 5, one end of many connecting lines 6 be electrically connected with multiple electrode 4 respectively, the other end is electrically connected with adapter 5; Adapter 5 is installed in handle 1, for electrode 4 is connected to radio-frequency current generator.
In addition, being also provided with the tube for transfusion 7 be connected with sacculus 3 in catheter main body 2, handle 1 being also provided with the infusion part 8 for liquid being inputted tube for transfusion 7, infusion part 8, tube for transfusion 7, sacculus 3 inside forms the closed channel be interconnected.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 become a branch of by being wrapped in insulation outer tube 9, by 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 for being positioned at the body stretching to outside on the housing of handle 1, and tube for transfusion 7 is communicated with this body and forms the passage for liquid communication closed.The outer end 10 of infusion part 8 is arranged for the interface connected with syringe.Like this, when needing sacculus 3 to expand, suction can be had the syringe of liquid (such as water) to be directly connected to the outer end 10 of infusion part 8, pushing syringe makes liquid enter sacculus 3, thus sacculus 3 is expanded.
In this specific embodiment, electrode 4 is arranged in the outer surface of sacculus 3.The multiple neural site needing 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 arrange wire rack mount more in addition, electrode 4 is arranged in wire rack mount, wire rack mount outsourcing sacculus 3, and when sacculus 3 expands, sacculus 3 makes it expansion against wire rack mount, thus band moving electrode 4 moves.
In this specific embodiment, for the ease of expansion and the contraction of sacculus 3, sacculus 3 adopts elastomeric material, as plastics are made.
In this specific embodiment, radio frequency ablation catheter also comprises thermocouple (not shown), is connected, for detecting temperature with at least one electrode.The wire for transmitting the thermocouple signal of telecommunication is also provided with in catheter main body 2 and handle 1.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that those of ordinary skill in the art just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all those skilled in the art, all should by the determined protection domain of 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 (6)
1. a balloon dilation-type multi-electrode radio-frequency ablation catheter, it is characterized in that, comprise handle, catheter main body, sacculus and multiple electrode, described multiple 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 the electrical connecting element for described multiple electrode being electrically connected to respectively radio-frequency current generator in described handle and catheter main body; In addition, be also provided with the tube for transfusion be connected with described sacculus in described catheter main body, described handle is also provided with the infusion part for liquid being inputted described tube for transfusion, described infusion part, tube for transfusion, balloon interior form the closed channel be interconnected; The spacing of described multiple electrode and orientation are set to correspond respectively to the multiple neural site needing to melt;
Described multielectrode recoding ablation catheter also comprises wire rack mount, and described electrode is arranged in described wire rack mount, sacculus described in described wire rack mount outsourcing; As the balloons are inflated, sacculus makes it expansion against wire rack mount, thus drives electrode movement;
Wherein, described electrical connecting element comprises many connecting lines and adapter, and one 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 described handle, and described connecting line is wrapped in insulation outer tube and becomes a branch of, and path and the described closed channel of described connecting line are separate;
Described infusion part is the body stretching to outside be positioned on the housing of described handle, and described tube for transfusion is communicated with described body and forms the passage for liquid communication closed;
Described radio frequency ablation catheter also comprises thermocouple, is connected with at least one electrode, for detecting temperature, is also provided with the wire for transmitting the thermocouple signal of telecommunication in catheter main body and handle.
2. balloon dilation-type multi-electrode radio-frequency ablation catheter as claimed in claim 1, wherein, the outer end of described body is arranged for the interface connected with syringe.
3. balloon dilation-type multi-electrode radio-frequency ablation catheter as claimed in claim 1, wherein, described sacculus adopts elastomeric material to make.
4. balloon dilation-type multi-electrode radio-frequency ablation catheter as claimed in claim 3, wherein, described elastomeric material is plastics.
5. balloon dilation-type multi-electrode radio-frequency ablation catheter as claimed in claim 1, wherein, described liquid is water or normal saline or contrast agent.
6. balloon dilation-type 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 |
|---|---|---|---|
| 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 CN102940524A (en) | 2013-02-27 |
| CN102940524B true CN102940524B (en) | 2015-09-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109464186B (en) | 2017-09-08 | 2023-12-22 | 泽丹医疗股份有限公司 | Device and method 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 |
| CN113081246B (en) * | 2021-03-31 | 2022-05-10 | 哈尔滨医科大学 | Radio frequency catheter system |
Citations (3)
| 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 |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464697B1 (en) * | 1998-02-19 | 2002-10-15 | Curon Medical, Inc. | Stomach and adjoining tissue regions in the esophagus |
| 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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Patent Citations (3)
| 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 |
| 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 |
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| CN102940524A (en) | 2013-02-27 |
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