CN102940526A - Radiofrequency ablation catheter with push-and-pull control head electrode - Google Patents
Radiofrequency ablation catheter with push-and-pull control head electrode Download PDFInfo
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- CN102940526A CN102940526A CN2012103961410A CN201210396141A CN102940526A CN 102940526 A CN102940526 A CN 102940526A CN 2012103961410 A CN2012103961410 A CN 2012103961410A CN 201210396141 A CN201210396141 A CN 201210396141A CN 102940526 A CN102940526 A CN 102940526A
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- slide unit
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- catheter
- radio frequency
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Abstract
The invention provides a radiofrequency ablation catheter with a push-and-pull control head electrode, which comprises a handle, a catheter body and the head electrode, wherein the head electrode is arranged at the front end of the catheter body; the rear end of the catheter body is arranged on the handle; the handle as well as the catheter body is provided with electric connecting elements inside to connect the head electrode to a radiofrequency current generating device; in addition, the handle as well as the catheter body is also provided with a pull wire inside; the handle comprises a first sliding component and a second sliding component which are sleeved with each other; the second sliding component is located outside the first sliding component; the first sliding component is fixedly connected with the rear end of the catheter body; the front end of the pull wire is fixedly connected to the front part of the catheter body; and the rear end of the pull wire is fixedly connected to the second sliding component.
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.Be that 200980157662.7 Chinese patent application has disclosed a kind of radio frequency ablation catheter such as application number, comprise handle, catheter main body, tip electrode, tip electrode is installed on the front end of catheter main body, the rear end of catheter main body is installed on handle, is provided with in handle and the catheter main body for the electrical connecting element that tip electrode is electrically connected to the radio-frequency current generator; This Chinese patent application has adopted mounting deflection controller on handle, and the orientation of controlling catheter main body leading portion tip electrode by rotation and a series of actuating device of support.Come the shortcoming in the orientation of control head electrode to be by the mode that this patent application discloses: handle arrangement is complicated, and cost of manufacture is high; Operator's operating handle is not good enough.
Given this, the invention provides a kind of new radio frequency ablation catheter.
Summary of the invention
Defects in view of prior art, technical problem to be solved by this invention provides a kind of radio frequency ablation catheter of push-and-pull control head electrode, by holding handle and by simple push-and-pull, the orientation of control head electrode well, the carrying out of more convenient operation.
The radio frequency ablation catheter of push-and-pull control head electrode provided by the invention comprises handle, catheter main body, tip electrode, described tip electrode is installed on 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 tip electrode is electrically connected to the radio-frequency current generator; In addition, also be provided with backguy in described handle and the catheter main body, described handle comprises the first slide unit and second slide unit of mutual socket, described the second slide unit is positioned at the outside of described the first slide unit, described the first slide unit is fixedly connected with the rear end of described catheter main body, the front end of described backguy is fixedly connected on the front portion of described catheter main body, and the rear end of described backguy is fixedly connected on described the second slide unit.
User uses being operating as of radio frequency ablation catheter provided by the present invention: hold the second slide unit with four fingers except thumb, and with the relevant position of thumb against the first slide unit, so just can control easily the first slide unit with respect to the slip of the second slide unit; Because the rear end of backguy is fixedly connected on the second slide unit, the other end is fixedly connected on the front portion of catheter main body, when the first slide unit slides with respect to the second slide unit, the second slide unit just can produce by backguy the effect of power to the junction point of backguy front end and catheter main body, thereby so that the front portion of catheter main body produces deformation crooked or that stretch, the further orientation of control head electrode.
Preferably, described the first slide unit has for the jut against the second slide unit, described jut also can be used for thumb against.More preferably, described jut is prominent ring.
Preferably, described electrical connecting element comprises connecting line and adapter, and an end of described connecting line is electrically connected with described tip electrode, and the other end is electrically connected with described adapter; Described adapter is installed in described the second slide unit.
Preferably, the distance of the front end of described backguy and described tip electrode is 1-5mm.
Preferably, in described the second slide unit bobbin winoler is installed, the rear end of described backguy is fixedly connected on described bobbin winoler.
Preferably, also be equipped be used to the guide finger of locating described backguy in described the first slide unit.
Preferably, the front end of described handle is provided with the cushion pad for the protection of described catheter main body rear end.
Radio frequency ablation catheter provided by the present invention, by the simple push-and-pull orientation of control head electrode well, operating handle is good; And simple in structure, cost of manufacture is low.
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 structural representation of a kind of preferred specific embodiment of radio frequency ablation catheter of the present invention.The specific embodiment
Fig. 1 shows a kind of preferred specific embodiment of radio frequency ablation catheter provided by the present invention.
As shown in Figure 1, radio frequency ablation catheter in this specific embodiment comprises handle 1, catheter main body 2, tip electrode (not shown), tip electrode is installed on the front end of catheter main body 2, the rear end of catheter main body 2 is installed on handle 1, is provided with for the electrical connecting element that tip electrode is electrically connected to the radio-frequency current generator in handle 1 and the catheter main body 2.Electrical connecting element comprises connecting line 3 and adapter 4, and an end of connecting line 3 is electrically connected with tip electrode, and the other end is electrically connected with adapter 4; Adapter 4 is installed in the handle 1, is used for tip electrode is connected to the radio-frequency current generator.
In this specific embodiment, handle 1 comprises the first slide unit 5 of mutual socket and the outside that the second slide unit 6, the second slide units 6 are positioned at the first slide unit 5, and the first slide unit 5 and the second slide unit 6 can slide mutually.The first slide unit 5 is fixedly connected with the rear end of catheter main body 2, and adapter 4 is installed in the second slide unit 6.The first slide unit 5 has prominent ring 7, be used for against the second slide unit 6, and the thumb that is used for the operator carry out against.
Also be provided with backguy 8 in handle 1 and the catheter main body 2, the front end of backguy 8 is fixedly connected on the front portion of catheter main body 2, is 0-5mm apart from the distance of tip electrode, and the rear end of backguy 8 is fixedly connected on the bobbin winoler 9 on the second slide unit 5.
In this specific embodiment, the guide finger (not shown) for the relative position of location the first slide unit 5 and the second slide unit 6 is installed also in the first slide unit 5.The front end of handle 1 is provided with the cushion pad 10 for the protection of catheter main body 2 rear ends.
Radio frequency ablation catheter in this specific embodiment also comprises the thermocouple (not shown), links to each other with tip 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 (8)
1. the radio frequency ablation catheter of a push-and-pull control head electrode, comprise handle, catheter main body, tip electrode, described tip electrode is installed on 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 described electrical connecting element that tip electrode is electrically connected to the radio-frequency current generator; It is characterized in that, also be provided with backguy in described handle and the catheter main body, described handle comprises the first slide unit and second slide unit of mutual socket, described the second slide unit is positioned at the outside of described the first slide unit, described the first slide unit is fixedly connected with the rear end of described catheter main body, the front end of described backguy is fixedly connected on the front portion of described catheter main body, and the rear end of described backguy is fixedly connected on described the second slide unit.
2. radio frequency ablation catheter as claimed in claim 1, wherein, described the first slide unit has for the jut against the second slide unit.
3. radio frequency ablation catheter as claimed in claim 2, wherein, described jut is prominent ring.
4. radio frequency ablation catheter as claimed in claim 1, wherein, described electrical connecting element comprises connecting line and adapter, and an end of described connecting line is electrically connected with described tip electrode, and the other end is electrically connected with described adapter; Described adapter is installed in described the second slide unit.
5. radio frequency ablation catheter as claimed in claim 1, wherein, the front end of described backguy and the distance of described tip electrode are 0-5mm.
6. radio frequency ablation catheter as claimed in claim 1 wherein, is equipped with bobbin winoler in described the second slide unit, and the rear end of described backguy is fixedly connected on described bobbin winoler.
7. radio frequency ablation catheter as claimed in claim 1 wherein, is stated the guide finger that also is equipped with in the first slide unit be used to the relative position of locating described the first slide unit and the second slide unit.
8. radio frequency ablation catheter as claimed in claim 1, wherein, the front end of described handle is provided with the cushion pad for the protection of described catheter main body rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103961410A CN102940526A (en) | 2012-10-17 | 2012-10-17 | Radiofrequency ablation catheter with push-and-pull control head electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103961410A CN102940526A (en) | 2012-10-17 | 2012-10-17 | Radiofrequency ablation catheter with push-and-pull control head electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102940526A true CN102940526A (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103961410A Pending CN102940526A (en) | 2012-10-17 | 2012-10-17 | Radiofrequency ablation catheter with push-and-pull control head electrode |
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| Country | Link |
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| CN (1) | CN102940526A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10842559B2 (en) | 2011-08-26 | 2020-11-24 | Symap Medical (Suzhou), Limited | System and method for locating and identifying the functional nerves innervating the wall of arteries and catheters for same |
| US11324408B2 (en) | 2011-08-26 | 2022-05-10 | Symap Medical (Suzhou), Ltd | Mapping sympathetic nerve distribution for renal ablation and catheters for same |
| US11576721B2 (en) | 2011-08-26 | 2023-02-14 | Symap Medical (Suzhou), Limited | System and method for mapping the functional nerves innervating the wall of arteries, 3-D mapping and catheters for same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6120476A (en) * | 1997-12-01 | 2000-09-19 | Cordis Webster, Inc. | Irrigated tip catheter |
| WO2001001516A1 (en) * | 1999-06-25 | 2001-01-04 | Deskin Research Group, Inc. | Electromagnetic field in a communications system for wireless networks |
| US6270496B1 (en) * | 1998-05-05 | 2001-08-07 | Cardiac Pacemakers, Inc. | Steerable catheter with preformed distal shape and method for use |
| CN2512389Y (en) * | 2001-12-30 | 2002-09-25 | 柳伯安 | Cluster radio frequence needle with angle regulation function |
| US20040139972A1 (en) * | 1999-09-27 | 2004-07-22 | Wong Michael H. | Stylet for use with endotracheal tubes having an articulable tip |
| CN201223445Y (en) * | 2008-06-23 | 2009-04-22 | 北京有色金属研究总院 | Radio frequency ablation catheter |
-
2012
- 2012-10-17 CN CN2012103961410A patent/CN102940526A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6120476A (en) * | 1997-12-01 | 2000-09-19 | Cordis Webster, Inc. | Irrigated tip catheter |
| US6270496B1 (en) * | 1998-05-05 | 2001-08-07 | Cardiac Pacemakers, Inc. | Steerable catheter with preformed distal shape and method for use |
| WO2001001516A1 (en) * | 1999-06-25 | 2001-01-04 | Deskin Research Group, Inc. | Electromagnetic field in a communications system for wireless networks |
| US20040139972A1 (en) * | 1999-09-27 | 2004-07-22 | Wong Michael H. | Stylet for use with endotracheal tubes having an articulable tip |
| CN2512389Y (en) * | 2001-12-30 | 2002-09-25 | 柳伯安 | Cluster radio frequence needle with angle regulation function |
| CN201223445Y (en) * | 2008-06-23 | 2009-04-22 | 北京有色金属研究总院 | Radio frequency ablation catheter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10842559B2 (en) | 2011-08-26 | 2020-11-24 | Symap Medical (Suzhou), Limited | System and method for locating and identifying the functional nerves innervating the wall of arteries and catheters for same |
| US11324408B2 (en) | 2011-08-26 | 2022-05-10 | Symap Medical (Suzhou), Ltd | Mapping sympathetic nerve distribution for renal ablation and catheters for same |
| US11576721B2 (en) | 2011-08-26 | 2023-02-14 | Symap Medical (Suzhou), Limited | System and method for mapping the functional nerves innervating the wall of arteries, 3-D mapping and catheters for same |
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Application publication date: 20130227 |