CN102940525A - Multi-pole helicoidal radiofrequency ablation conduit - Google Patents
Multi-pole helicoidal radiofrequency ablation conduit Download PDFInfo
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- CN102940525A CN102940525A CN2012103960761A CN201210396076A CN102940525A CN 102940525 A CN102940525 A CN 102940525A CN 2012103960761 A CN2012103960761 A CN 2012103960761A CN 201210396076 A CN201210396076 A CN 201210396076A CN 102940525 A CN102940525 A CN 102940525A
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- slide unit
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- radio frequency
- helical form
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Abstract
The invention discloses a multi-pole helicoidal radiofrequency ablation conduit which comprises a handle, a conduit main body, an umbrella-shaped skeleton, a centre rod and a plurality of electrodes. Compared with the prior art, the multi-pole helicoidal radiofrequency ablation conduit can ablate a plurality of points at the same time, so that the work efficiency can be improved greatly.
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 multiple coil shape 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 multiple coil shape radio frequency ablation catheter comprises handle, catheter main body, umbrella skeleton, center-pole, a plurality of electrode;
Described helical form skeleton comprises some helical form elastic strips, and the first end of described helical form elastic strip is free end, and the second end is fixed in described center-pole front end; Described electrode is arranged on the described helical form 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 helical form 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 helical form 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 helical form elastic strip is 1-4.
Compared with prior art, beneficial effect of the present invention is as follows:
A kind of multiple coil shape 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 multiple coil shape radio frequency ablation catheter provided by the present invention.
Fig. 2 is the helical form skeleton structural representation partly of the first embodiment of multiple coil shape radio frequency ablation catheter provided by the present invention.
Fig. 3 is the structural representation of another kind of user mode of helical form skeleton part of the first embodiment of multiple coil shape radio frequency ablation catheter provided by the present invention.
Fig. 4 is the handle arrangement schematic diagram of the second embodiment of multiple coil shape 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 multiple coil shape radio frequency ablation catheter provided by the present invention.As shown in Figure 1 to Figure 3, the multiple coil shape radio frequency ablation catheter in the present embodiment comprises handle 1, catheter main body 2, helical form 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, helical form skeleton 3 comprises some helical form elastic strips, and the first end of helical form elastic strip is free end, and the second end is fixed in the front end of center-pole 4; Electrode 5 is positioned on the helical form skeleton 3.In this embodiment, the material of helical form elastic strip is the NiTi marmem; The number of helical form elastic strip is two, and four electrodes are set on each helical form elastic strip.Here only for for example, during implementation, can at the helical form 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 helical form skeleton 3.When helical form skeleton 3 is not subjected to External Force Acting, for example helical form skeleton 3 stretch out catheter main body 2 and be not subjected to catheter main body 2 tube wall do the time spent, helical form skeleton 3 is in the swelling state of nature, as shown in Figure 3.Under this state, the electrode 5 on the helical form skeleton 3 can be near the site that needs in the blood vessel to melt.When helical form skeleton 3 income catheter main body 2, helical form skeleton 3 is subject to the compression of catheter main body 2, so that whole helical form skeleton 3 is in contraction state, 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 multiple coil shape of the present embodiment radio frequency ablation catheter is not limited.
Fig. 4 shows the second embodiment of multiple coil shape radio frequency ablation catheter provided by the present invention.As shown in Figure 4, the multiple coil shape radio frequency ablation catheter in this specific embodiment and embodiment 1 difference 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 helical form 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 multiple coil shape radio frequency ablation catheter is characterized in that, comprises handle, catheter main body, helical form skeleton, center-pole, a plurality of electrode;
Described helical form skeleton comprises some helical form elastic strips, and the described first end of described helical form elastic strip is free end, and the second end is fixed in described center-pole front end; Described electrode is arranged on the described helical form 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 helical form skeleton is incorporated into described catheter main body and stretches out described catheter main body.
2. multiple coil shape 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. multiple coil shape 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. multiple coil shape 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. multiple coil shape 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. multiple coil shape radio frequency ablation catheter according to claim 1 is characterized in that, the material of described helical form elastic strip is super-elastic shape memory alloy.
7. multiple coil shape radio frequency ablation catheter according to claim 6 is characterized in that, described super-elastic shape memory alloy is the NiTi marmem.
8. multiple coil shape radio frequency ablation catheter according to claim 1 is characterized in that, the number of described electrode is 2-10.
9. multiple coil shape radio frequency ablation catheter according to claim 1 is characterized in that, the number of described helical form elastic strip is 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103960761A CN102940525A (en) | 2012-10-17 | 2012-10-17 | Multi-pole helicoidal radiofrequency ablation conduit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103960761A CN102940525A (en) | 2012-10-17 | 2012-10-17 | Multi-pole helicoidal radiofrequency ablation conduit |
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| CN102940525A true CN102940525A (en) | 2013-02-27 |
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| CN2012103960761A Pending CN102940525A (en) | 2012-10-17 | 2012-10-17 | Multi-pole helicoidal radiofrequency ablation conduit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688331A (en) * | 2013-12-09 | 2015-06-10 | 上海安通医疗科技有限公司 | Catheter device used for regulating nerves |
| CN105326562A (en) * | 2014-06-24 | 2016-02-17 | 上海安通医疗科技有限公司 | Catheter device for regulating renal nerves |
| CN113967065A (en) * | 2021-06-23 | 2022-01-25 | 四川锦江电子科技有限公司 | Pulsed electric field ablation catheter capable of entering inside of tissue |
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| EP0774926A1 (en) * | 1993-08-27 | 1997-05-28 | Medtronic, Inc. | Method and apparatus for r-f ablation |
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| CN201469401U (en) * | 2009-08-21 | 2010-05-19 | 刘小青 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
| WO2011143443A2 (en) * | 2010-05-12 | 2011-11-17 | Medical Device Innovations Llc | Method and device for treatment of arrhythmias and other maladies |
| CN102274074A (en) * | 2011-05-03 | 2011-12-14 | 上海微创电生理医疗科技有限公司 | Multi-electrode open-type radio frequency ablation catheter |
| WO2012061161A1 (en) * | 2010-10-25 | 2012-05-10 | Medtronic Ardian Luxembourg S.A.R.L. | Catheter apparatuses having multi-electrode arrays for renal neuromodulation and associated systems and methods |
| CN102488552A (en) * | 2011-12-15 | 2012-06-13 | 四川锦江电子科技有限公司 | Manageable spiral electrophysiology catheter |
| CN202821624U (en) * | 2012-10-17 | 2013-03-27 | 上海安通医疗科技有限公司 | Multi-pole spiral radiofrequency ablation catheter |
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2012
- 2012-10-17 CN CN2012103960761A patent/CN102940525A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0774926A1 (en) * | 1993-08-27 | 1997-05-28 | Medtronic, Inc. | Method and apparatus for r-f ablation |
| EP0774926B1 (en) * | 1993-08-27 | 1999-06-09 | Medtronic, Inc. | r-f ablation apparatus |
| US6443950B1 (en) * | 1999-02-26 | 2002-09-03 | Medtronic, Inc. | Ablation lead for atrial flutter |
| CN1549694A (en) * | 2001-05-01 | 2004-11-24 | �����ɷ� | Helically shaped electrophysiology catheter |
| CN1533748A (en) * | 2003-03-28 | 2004-10-06 | 佐竹修太郎 | RF hot air bag guide tube |
| CN101309651A (en) * | 2005-06-20 | 2008-11-19 | 消融前沿公司 | Ablation catheter |
| CN2855350Y (en) * | 2005-09-01 | 2007-01-10 | 迈德医疗科技（上海）有限公司 | Probe electrode device for RF ablation treatment |
| CN201469401U (en) * | 2009-08-21 | 2010-05-19 | 刘小青 | Spiral renal-artery-around renal sympathetic nerve radio-frequency ablation electrode catheter |
| WO2011143443A2 (en) * | 2010-05-12 | 2011-11-17 | Medical Device Innovations Llc | Method and device for treatment of arrhythmias and other maladies |
| WO2012061161A1 (en) * | 2010-10-25 | 2012-05-10 | Medtronic Ardian Luxembourg S.A.R.L. | Catheter apparatuses having multi-electrode arrays for renal neuromodulation and associated systems and methods |
| CN102274074A (en) * | 2011-05-03 | 2011-12-14 | 上海微创电生理医疗科技有限公司 | Multi-electrode open-type radio frequency ablation catheter |
| CN102488552A (en) * | 2011-12-15 | 2012-06-13 | 四川锦江电子科技有限公司 | Manageable spiral electrophysiology catheter |
| CN202821624U (en) * | 2012-10-17 | 2013-03-27 | 上海安通医疗科技有限公司 | Multi-pole spiral radiofrequency ablation catheter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104688331A (en) * | 2013-12-09 | 2015-06-10 | 上海安通医疗科技有限公司 | Catheter device used for regulating nerves |
| CN105326562A (en) * | 2014-06-24 | 2016-02-17 | 上海安通医疗科技有限公司 | Catheter device for regulating renal nerves |
| CN113967065A (en) * | 2021-06-23 | 2022-01-25 | 四川锦江电子科技有限公司 | Pulsed electric field ablation catheter capable of entering inside of tissue |
| CN113967065B (en) * | 2021-06-23 | 2023-08-11 | 四川锦江电子医疗器械科技股份有限公司 | Pulse electric field ablation catheter capable of entering inside tissues |
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Application publication date: 20130227 |