CN102920506B - A kind of multipole umbrella radio frequency ablation catheter - Google Patents
A kind of multipole umbrella radio frequency ablation catheter Download PDFInfo
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- CN102920506B CN102920506B CN201210396278.6A CN201210396278A CN102920506B CN 102920506 B CN102920506 B CN 102920506B CN 201210396278 A CN201210396278 A CN 201210396278A CN 102920506 B CN102920506 B CN 102920506B
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- slide unit
- main body
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- pole
- catheter main
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Abstract
The invention discloses a kind of multipole umbrella radio frequency ablation catheter, comprise handle, catheter main body, umbrella skeleton, center-pole, multiple electrode.Compared with prior art, the present invention can be melted multiple site simultaneously, thus greatly provides 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, be of the present inventionly to provide a kind of multipole umbrella radio frequency ablation catheter at present, to realize melting multiple site 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, multiple 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 front end, and the second end of described arcuation elastic strip is fixed on sliding shoe; Described sliding shoe is slidably connected to described center-pole; Described electrode is arranged on described umbrella skeleton;
The inside of described handle and catheter main body is set to hollow, is provided with the electrical connecting element for described electrode being electrically connected to radio-frequency current generator in described handle and catheter main body;
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 socket mutually, and the rear end of described catheter main body is installed on described first slide unit, and the rear end of described center-pole is fixedly connected on described second slide unit; Described first slide unit, the second slide unit, center-pole are configured to make described umbrella skeleton be incorporated into described catheter main body and stretch out described catheter main body by the mutual slip of described first slide unit and the second slide unit.
Preferably, described second slide unit is the handle main body gripped for user, and described 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 one end of described connecting line is electrically connected respectively with described multiple electrode, and the other end is electrically connected with described adapter; Described adapter is installed in described second slide unit.
Preferably, described first slide unit is the handle main body gripped for user, and described 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 one end of described connecting line is electrically connected respectively with described multiple electrode, and the other end is electrically connected with described adapter; Described adapter is installed in described 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 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 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 handle arrangement schematic diagram of the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
Fig. 2 is the structural representation of the umbrella skeleton part of the first embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.
Fig. 3 is the structural representation of the another kind of using state of the 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.
Detailed description of the invention
Below with the drawings and specific embodiments, the present invention will be further described:
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 the electrical connecting element (not shown) for described electrode being electrically connected to 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 the second slide unit 12 of socket mutually, 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 on the fixed block 6 near center-pole front end or front end, and the second end of arcuation elastic strip is fixed on sliding shoe 7, and sliding shoe 7 is slidably socketed on center-pole 4; Electrode 5 is positioned on umbrella skeleton 3.In this embodiment, the material of arc elastic bar is NiTi marmem; The number of arcuation elastic strip is two, each arcuation elastic strip is arranged an electrode.Here be only citing, when specifically implementing, according to actual needs, arcuation elastic strip can arrange electrode, as multiple electrode can be arranged.
In this embodiment, the second slide unit 12 is the handle main body gripped for user, and the first slide unit 11 is socketed on the inside of the second slide unit 12.Promote the first slide unit 11 when moving forward or backward when user gripping handle main body, due to the effect of center-pole 4, make umbrella skeleton 3 to take in or to stretch out catheter main body 2.Because one end of the arc elastic bar of umbrella skeleton 3 is for slidably to hold, when umbrella skeleton 3 is not by External Force Acting, such as umbrella skeleton 3 stretch out catheter main body 2 and the effect of tube wall not by catheter main body 2 time, umbrella skeleton 3 is in natural swelling state, as shown in Figure 3.In this case, the electrode 5 on umbrella skeleton 3 can need the site of melting in blood vessel.When umbrella skeleton 3 takes in catheter main body 2, the slidably end of the arc elastic bar of umbrella skeleton 3 slides along center-pole 4, make the axial length of whole umbrella skeleton 3 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.In this case, just can manipulate radio frequency ablation catheter makes catheter main body 2 move at Ink vessel transfusing.
In this specific embodiment, described radio-frequency (RF) ablation pipe 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 handle 1 and catheter main body 2.
It should be noted that, Fig. 1 to Fig. 3 only plays the effect of signal, does not limit the shape and size of multipole umbrella radio frequency ablation catheter described in the present embodiment.
Embodiment 2
Fig. 4 shows the second embodiment of multipole umbrella radio frequency ablation catheter provided by the present invention.As shown in Figure 4, the multipole umbrella radio frequency ablation catheter in this specific embodiment and embodiment 1 difference are that the first slide unit 11 is the handle main body gripped for user, and the second slide unit 12 is socketed on the inside of the first slide unit 11.In this embodiment, promote the second slide unit 12 when moving forward or backward when user gripping handle main body, due to the effect of center-pole 4, make umbrella skeleton 3 to take in or to stretch out catheter main body 2.
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 (3)
1. a multipole umbrella radio frequency ablation catheter, is characterized in that, comprises handle, catheter main body, umbrella skeleton, center-pole, multiple electrode;
Described umbrella skeleton comprises some arcuation elastic strips, and the first end of described arcuation elastic strip is fixed near described center-pole front end or front end, and the second end of described arcuation elastic strip is fixed on sliding shoe; Described sliding shoe is slidably connected to described center-pole; Described electrode is arranged on described umbrella skeleton;
The inside of described handle and catheter main body is set to hollow, is provided with the electrical connecting element for described electrode being electrically connected to radio-frequency current generator in described handle and catheter main body;
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 socket mutually, and the rear end of described catheter main body is installed on described first slide unit, and the rear end of described center-pole is fixedly connected on described second slide unit; Described first slide unit, the second slide unit, center-pole are configured to make described umbrella skeleton be incorporated into described catheter main body and stretch out described catheter main body by the mutual slip of described first slide unit and the second slide unit; When described umbrella skeleton stretches out described catheter main body to certain position, described sliding shoe cannot be continued to slide by the outstanding position restriction of described catheter main body;
Described second slide unit is the handle main body gripped for user, and described first slide unit is socketed on the inside of the second slide unit;
Described electrical connecting element comprises many connecting lines and adapter, and one end of described many connecting lines is electrically connected respectively with described multiple electrode, and the other end is electrically connected with described adapter; Described adapter is installed in described second slide unit;
The number of described electrode is 2-10, and the number of described arcuation elastic strip is 2-10;
Described multipole umbrella radio frequency ablation catheter is used for renal artery.
2. 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.
3. multipole umbrella radio frequency ablation catheter according to claim 2, is characterized in that, described super-elastic shape memory alloy is NiTi marmem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210396278.6A CN102920506B (en) | 2012-10-17 | 2012-10-17 | A kind of multipole umbrella radio frequency ablation catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210396278.6A CN102920506B (en) | 2012-10-17 | 2012-10-17 | A kind of multipole umbrella radio frequency ablation catheter |
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| CN102920506A CN102920506A (en) | 2013-02-13 |
| CN102920506B true CN102920506B (en) | 2015-11-25 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193498B (en) * | 2015-09-18 | 2019-03-08 | 先健科技(深圳)有限公司 | Ablation catheter apparatus |
| US10130420B2 (en) * | 2015-10-08 | 2018-11-20 | Biosense Webster (Israel) Ltd. | Catheter with membraned spines for pulmonary vein isolation |
| CN106691585B (en) * | 2016-12-24 | 2019-11-22 | 迈德医疗科技（上海）有限公司 | Radio frequency ablation electrode device |
Citations (8)
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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 | RF hot air bag guide tube |
| 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 | RF hot air bag guide tube |
| 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 |
| 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 |
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| CN102920506A (en) | 2013-02-13 |
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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 |