CN202960760U - Multi-point radiofrequency ablation electrode used for operation of renal sympathetic nerve removal - Google Patents
Multi-point radiofrequency ablation electrode used for operation of renal sympathetic nerve removal Download PDFInfo
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- CN202960760U CN202960760U CN 201220690574 CN201220690574U CN202960760U CN 202960760 U CN202960760 U CN 202960760U CN 201220690574 CN201220690574 CN 201220690574 CN 201220690574 U CN201220690574 U CN 201220690574U CN 202960760 U CN202960760 U CN 202960760U
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- electrode
- sympathetic nerve
- ablation electrode
- multiple spot
- elasticity
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Abstract
The utility model provides a multi-point radiofrequency ablation electrode used for an operation of renal sympathetic nerve removal. The multi-point radiofrequency ablation electrode used for the operation of renal sympathetic nerve removal comprises a handle, a catheter and electrodes, and further comprises a fixed head end, a stay wire and elastic crank arms, wherein the stay wire is placed inside the cavity of the catheter and is respectively connected with the fixed head end and the handle. The elastic crank arms are multiple in number. One end of each elastic crank arm is connected with the fixed head end and the other end of the elastic crank arm is connected with the catheter. The electrodes are arranged on the elastic crank arms. The multi-point radiofrequency ablation electrode used for the operation of renal sympathetic nerve removal is capable of a one-time intervention and can discharge simultaneously or point by point and enable the operation to be completed rapidly and safely.
Description
Technical field
This utility model relates to active medical instruments field, relates in particular to a kind of kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes.
Background technology
Along with the raising of living standard, the disease of harm humans life, life once went out not poor.In this rhythm of life age extremely fast, hyperpietic's number is in year by year rising, and very fast of its rate of climb.In make the life better mode and comprise the measure of at least 3 kinds of antihypertensives treatment of the reasonably combined capacity of diuretic of application, in the time of still systolic pressure and diastolic pressure can not being controlled at target level, be called refractory hypertension (or intractable hypertension).Clinical proof can not well be controlled blood pressure to these by medicine by the patient that intractable hypertension torments.Find by research, the sympathetic nerve overacfivity on renal artery is to cause hypertensive key factor, by this, can reach the purpose of controlling blood pressure by blocking part renal artery sympathetic nerve.
Effect of the present utility model is that the electrode of alternating current by the conduit head end is transmitted in the renal artery tissue, make it produce heat, rising temperature (generally being elevated to 65 ℃ of left and right), the sympathetic nerve of part on renal artery is at high temperature lost activity, reach the orthosympathetic purpose of blocking part renal artery, thereby effectively control blood pressure, make the patient by the uncontrollable blood pressure of common drug regain healthy body constitution.
The electrode catheter of use only has an electrode clinically at present, the doctor must descend the operation of any again after completing the melting an of point, for example every side all will melt 4～6 points in going renal artery sympathetic nerve art, the doctor must operate 8～12 times so, the open-assembly time of X ray is very long, and operating time is long, and risk is also larger.
The utility model content
The technical problem that (one) will solve
Technical problem to be solved in the utility model is to provide a kind of kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes, to realize disposable intervention, while or pointwise discharge, quick, the safe purpose of completing operation.
(2) technical scheme
For solving the problems of the technologies described above, this utility model provides a kind of kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes, comprise handle, conduit and electrode, comprise that also fixedly head end, bracing wire and elasticity are cranked arm, described bracing wire is positioned at conduit cavity and connects respectively described fixedly head end and handle; Described elasticity is cranked arm and is set to a plurality ofly, and the one end is connected and fixed head end, other end connecting duct; Described elasticity is cranked arm and is provided with electrode.
Preferably, described elasticity is cranked arm and is set to four, and the middle part that each elasticity is cranked arm is straight, the curved setting in both ends.
Preferably, described elasticity is cranked arm and is comprised elastic skeleton and the sleeve pipe of cranking arm, and the two ends of described elastic skeleton are connected and fixed respectively head end and conduit, and the described casing pipe sleeve of cranking arm is contained on elastic skeleton.
Preferably, described electrode is annular, and it is sleeved on elasticity and cranks arm on the elastic skeleton of flat part.
Preferably, described elasticity is cranked arm and is also comprised heat sensitive sensor, and described heat sensitive sensor is fixed on the electrode inner wall of annular.
Preferably, the wire of described electrode and the heat sensitive sensor tube chamber that passes crank arm sleeve pipe and conduit is drawn by the handle place.
Preferably, be provided with the leverage of connecting stay wire in described handle.
Preferably, described leverage comprises stick and pin, and an end of described stick is coupling in handle by pin, is connected with described bracing wire at the non-end position of stick.
Preferably, described electrode is arranged along axially being staggered of conduit.
Preferably, described electrode is arranged in the shape of a spiral.
(3) beneficial effect
This utility model provides removes kidney sympathetic nerve art multiple spot radio-frequency ablation electrode, the disposable intervention of energy by set a plurality of electrodes, reaches the purpose that while or pointwise are melted, and then shortening operating time and X ray open-assembly time, operation safety also further improves.
Further, a plurality of electrodes of the present utility model are staggered and arrange, and particularly spiral helicine arrangement mode, enlarge its area coverage that melts vertically, improves the efficient that melts; This utility model is by the leverage of control handle, can control elasticity and crank arm to switch and strut and close up state, and softened state can make ablating electrode fit tightly on blood vessel, closes up state and facilitates the intervention of this equipment and take out operation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the local enlarged diagram that elasticity of the present utility model is cranked arm;
Fig. 3 is handle enlarged diagram of the present utility model;
Wherein: 1, handle, 2, conduit, 3, electrode, 4, fixing head end, 5, bracing wire, 6, elasticity cranks arm, 61, elastic skeleton, 62, the sleeve pipe of cranking arm, 63, heat sensitive sensor, 7, leverage, 71, stick, 72, pin.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present utility model is described in further detail.Following examples are used for explanation this utility model, but are not used for limiting scope of the present utility model.
Embodiment as shown in Figure 1, a kind of kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes, comprise handle 1, conduit 2 and electrode 3, comprise that also fixedly head end 4, bracing wire 5 and elasticity crank arm 6, bracing wire 5 is positioned at conduit 2 tube chambers, it is connected and fixed respectively head end 4 and handle 1, elasticity crank arm 6 be set to a plurality of, a crank arm end of 6 of elasticity is connected and fixed head end 4, other end connecting duct 2 under the pulling force effect of bracing wire 5, shortens the fixedly distance between head end 4 and conduit 2, and then make elasticity crank arm 6 strains to occur, a plurality of elasticity are cranked arm 6 strut and be lantern-shaped.Crank arm in each elasticity and be equipped with an electrode 3 on 6, electrode is preferably made by electric conductivity and all good platinums of bio-compatible performance, and the elasticity of lantern-shaped is cranked arm and 6 electrode 3 is close on blood vessel.
Elasticity is cranked arm and 6 preferably is set to four (only showing two in figure), through test, four elasticity is cranked arm and 6 is evenly arranged, after it is lantern-shaped and struts, melt area and enough cover full circle week, the burden that had not only increased cost but also increased the weight of bracing wire more than four is set, and is less than four, melt the area covering deficiency, cause ablation effect not good enough; And elasticity crank arm 6 preferably be set to the middle part straight, both ends are curved, flat part wherein is when rounding state and the axially parallel of conduit, arc in conjunction with two ends, make that the diameter of cranking arm on the whole is little and shape is round and smooth, be convenient to pass in and out the operation of blood vessel, and the arc setting at two ends, can guarantee to guarantee that in 6 distortion outward of cranking arm of support exhibition process elasticity its support exhibition is the lantern-shaped of evagination.
as shown in Figure 2, it is the crank arm local enlarged diagram of 6 flat parts of elasticity, elasticity is as shown in FIG. cranked arm and 6 is comprised elastic skeleton 61 and the sleeve pipe 62 of cranking arm, the nitinol alloy wire that elastic skeleton 61 preferred elastomeric are better, need to satisfy it during design and installation more than bending to 90 degree under less moment of flexure and plastic deformation do not occur, still can return to the requirement of original state after removing external force, its two ends are connected and fixed respectively in head end 4 and this annexation of conduit 2(Fig. 2 not shown, can be with reference to Fig. 1), the sleeve pipe 62 of cranking arm is preferably made by the medical plastic with biocompatibility, it is sleeved on elastic skeleton 61, electrode 3 is annular, and it is sleeved on elasticity and cranks arm on the elastic skeleton 61 of 6 flat parts, is connected with heat sensitive sensor 63 on electrode 3 inwalls of annular, and is preferred, and annular electrode is covered in the sleeve pipe of cranking arm.
as shown in Figure 3, it is the enlarged diagram of handle 1, be provided with on handle 1 leverage 7(have in Fig. 1 show), be used for pulling bracing wire 5, concrete, leverage 7 can be set to be made of stick 71 and pin 72 etc., one end of stick 71 is coupling in handle 1 by pin 72, non-end position at stick 71 is connected with described bracing wire 5, certainly, be the operation and more attractive in appearance of being more convenient for, can button etc. be set in the other end of stick 71, and baffle plate etc. can be set in handle, being used for pulling action bars 71 positions stick to correct position, prevent that it from automatically reseting, the designed leverage 7 of this utility model is simple in structure, practical, only need manually pull action bars 71, can pull bracing wire 5, and then drives elasticity 6 flexural deformations outward of cranking arm, and the support exhibition is lantern-shaped.
Fig. 3 has also shown the preferred design of conduit, namely comprise main steel pipe 21 and protection tube 22, main steel pipe 21 is made by the metal material of good springiness, its two ends connect respectively elastic skeleton 61 and handle 1, protection tube 22 is made by the medical plastic with biocompatibility, and it is sleeved on main steel pipe 21.
Separately, electrode 3 in this utility model and the wire of heat sensitive sensor 63 pass the crank arm tube chamber of sleeve pipe 62 and conduit 2 of pipe and are drawn by handle 1 place, be used for being connected with radiofrequency melting instrument, temperature controller etc., so that realize a plurality of electrodes whiles or pointwise discharge, and the temperature that melts by the immediately monitoring electrode, the voltage of each electrode etc. is carried out instant adjustment, effectively improve the efficient that melts; A plurality of electrode 3 of the present utility model arranges along axially being staggered of conduit 2 and arranges, and namely each electrode does not belong to same radial section, enlarges its spacing vertically as far as possible, preferably is set to arrange in the shape of a spiral, to enlarge the area coverage that melts of electrode.
It should be noted that at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment, this utility model is had been described in detail, those skilled in the art are to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (10)
1. one kind is removed kidney sympathetic nerve art multiple spot radio-frequency ablation electrode, comprise handle (1), conduit (2) and electrode (3), it is characterized in that: comprise that also fixedly head end (4), bracing wire (5) and elasticity are cranked arm (6), described bracing wire (5) is positioned at conduit (2) tube chamber and connects respectively described fixedly head end (4) and handle (1); Described elasticity crank arm (6) be set to a plurality ofly, the one end is connected and fixed head end (4), other end connecting duct (2); Described elasticity crank arm (6) be provided with electrode (3).
2. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 1 is characterized in that: described elasticity crank arm (6) be set to four, the crank arm middle part of (6) of each elasticity is straight, the curved setting in both ends.
3. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 2, it is characterized in that: described elasticity crank arm (6) comprise elastic skeleton (61) and the sleeve pipe of cranking arm (62), the two ends of described elastic skeleton (61) are connected and fixed respectively head end (4) and conduit (2), and the described sleeve pipe of cranking arm (62) is sleeved on elastic skeleton (61).
4. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 3 is characterized in that: described electrode (3) is annular, and it is sleeved on elasticity and cranks arm on the elastic skeleton (61) of (6) flat part.
5. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 4 is characterized in that: described elasticity crank arm (6) also comprise heat sensitive sensor (63), described heat sensitive sensor (63) is fixed on electrode (3) inwall of annular.
6. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 5, it is characterized in that: the wire of described electrode (3) and heat sensitive sensor (63) passes the tube chamber of the sleeve pipe of cranking arm (62) and conduit (2) and is located to draw by handle (1).
7. the described kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes of according to claim 1-6 arbitrary claim, is characterized in that: the leverage (7) that is provided with connecting stay wire (5) in described handle (1).
8. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 7, it is characterized in that: described leverage (7) comprises stick (71) and pin (72), one end of described stick (71) is coupling in handle (1) by pin (72), is connected with described bracing wire (5) at the non-end position of stick (71).
9. the described kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes of according to claim 1-6 arbitrary claim, it is characterized in that: described electrode (3) is arranged along axially being staggered of conduit (2).
10. the kidney sympathetic nerve art multiple spot radio-frequency ablation electrode that goes according to claim 9, it is characterized in that: described electrode (3) is arranged in the shape of a spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690574 CN202960760U (en) | 2012-12-13 | 2012-12-13 | Multi-point radiofrequency ablation electrode used for operation of renal sympathetic nerve removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690574 CN202960760U (en) | 2012-12-13 | 2012-12-13 | Multi-point radiofrequency ablation electrode used for operation of renal sympathetic nerve removal |
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| CN202960760U true CN202960760U (en) | 2013-06-05 |
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| CN 201220690574 Expired - Lifetime CN202960760U (en) | 2012-12-13 | 2012-12-13 | Multi-point radiofrequency ablation electrode used for operation of renal sympathetic nerve removal |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9827041B2 (en) | 2002-04-08 | 2017-11-28 | Medtronic Ardian Luxembourg S.A.R.L. | Balloon catheter apparatuses for renal denervation |
| US9827040B2 (en) | 2002-04-08 | 2017-11-28 | Medtronic Adrian Luxembourg S.a.r.l. | Methods and apparatus for intravascularly-induced neuromodulation |
| US9919144B2 (en) | 2011-04-08 | 2018-03-20 | Medtronic Adrian Luxembourg S.a.r.l. | Iontophoresis drug delivery system and method for denervation of the renal sympathetic nerve and iontophoretic drug delivery |
| US10350004B2 (en) | 2004-12-09 | 2019-07-16 | Twelve, Inc. | Intravascular treatment catheters |
| US10433907B2 (en) | 2014-03-13 | 2019-10-08 | Medtronic Ardian Luxembourg S.A.R.L. | Low profile catheter assemblies and associated systems and methods |
| US10588682B2 (en) | 2011-04-25 | 2020-03-17 | Medtronic Ardian Luxembourg S.A.R.L. | Apparatus and methods related to constrained deployment of cryogenic balloons for limited cryogenic ablation of vessel walls |
| US10709490B2 (en) | 2014-05-07 | 2020-07-14 | Medtronic Ardian Luxembourg S.A.R.L. | Catheter assemblies comprising a direct heating element for renal neuromodulation and associated systems and methods |
-
2012
- 2012-12-13 CN CN 201220690574 patent/CN202960760U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9827041B2 (en) | 2002-04-08 | 2017-11-28 | Medtronic Ardian Luxembourg S.A.R.L. | Balloon catheter apparatuses for renal denervation |
| US9827040B2 (en) | 2002-04-08 | 2017-11-28 | Medtronic Adrian Luxembourg S.a.r.l. | Methods and apparatus for intravascularly-induced neuromodulation |
| US10105180B2 (en) | 2002-04-08 | 2018-10-23 | Medtronic Ardian Luxembourg S.A.R.L. | Methods and apparatus for intravascularly-induced neuromodulation |
| US10376311B2 (en) | 2002-04-08 | 2019-08-13 | Medtronic Ardian Luxembourg S.A.R.L. | Methods and apparatus for intravascularly-induced neuromodulation |
| US10420606B2 (en) | 2002-04-08 | 2019-09-24 | Medtronic Ardian Luxembourg S.A.R.L. | Methods and apparatus for performing a non-continuous circumferential treatment of a body lumen |
| US10350004B2 (en) | 2004-12-09 | 2019-07-16 | Twelve, Inc. | Intravascular treatment catheters |
| US11272982B2 (en) | 2004-12-09 | 2022-03-15 | Twelve, Inc. | Intravascular treatment catheters |
| US9919144B2 (en) | 2011-04-08 | 2018-03-20 | Medtronic Adrian Luxembourg S.a.r.l. | Iontophoresis drug delivery system and method for denervation of the renal sympathetic nerve and iontophoretic drug delivery |
| US10588682B2 (en) | 2011-04-25 | 2020-03-17 | Medtronic Ardian Luxembourg S.A.R.L. | Apparatus and methods related to constrained deployment of cryogenic balloons for limited cryogenic ablation of vessel walls |
| US10433907B2 (en) | 2014-03-13 | 2019-10-08 | Medtronic Ardian Luxembourg S.A.R.L. | Low profile catheter assemblies and associated systems and methods |
| US10709490B2 (en) | 2014-05-07 | 2020-07-14 | Medtronic Ardian Luxembourg S.A.R.L. | Catheter assemblies comprising a direct heating element for renal neuromodulation and associated systems and methods |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |