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Apparatus for mapping and ablating renal nerve distributed on renal artery

A renal artery and renal nerve technology, applied in spinal nerve electrodes, parts of surgical instruments, medical science, etc., can solve the problem of low precision, difficult operation of the catheter system, and can not completely ensure the accuracy and effectiveness of renal nerve ablation and safety and other issues, to achieve the effect of easy control and good contact

Active Publication Date: 2013-09-04
SYMAP MEDICAL (SUZHOU) LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In summary, most of the catheter systems currently used for renal nerve ablation are not easy to operate and have low precision, which cannot completely ensure the accuracy, effectiveness and safety of renal nerve ablation

Method used

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  • Apparatus for mapping and ablating renal nerve distributed on renal artery
  • Apparatus for mapping and ablating renal nerve distributed on renal artery
  • Apparatus for mapping and ablating renal nerve distributed on renal artery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0054] Figures 1-1 to 1-4 A first example of the invention is shown. As shown in Figure 1, the catheter consists of a controllable hollow guide catheter (11), a movable mapping ablation catheter (12) placed in the guide catheter and shaped at the front end, a handle (13) and its built-in control parts , the fluid conduit (14) at the end of the handle communicated with the guide catheter, the joint (15) used to connect the mapping and ablation controller, and the pulling wire connecting the head end of the guide catheter and the control part.

[0055] The handle (13) and its built-in control parts are made of polyoxymethylene, acrylonitrile butadiene styrene and polymethylmethacrylate.

[0056] The guide catheter (11) has an outer diameter of 2.66mm and an inner diameter of 2.66mm, and has a small lumen for passing the pulling wire, the inner diameter of which is 0.40mm; and a large lumen for the ablation catheter through the mapping, the inner diameter of which is 1.57mm. ...

example

[0067] In the second example of the present invention, the second control button (17) and the third control button (18) are the same control button (19) ( Figure 3-1), can control the extension and retraction of the mapping ablation catheter, and can also control the rotation of the mapping ablation catheter; but it is equipped with an interlock device, that is, when the control button is pushed and pulled, it cannot be rotated. The push-in operation cannot be performed when the ablation catheter is rotated. Moving the single control button back and forth can make the mapping ablation catheter (12) stretch out or retract the guide catheter (11) ( Figure 3-3 ); turning the single control button (19) can make the mapping ablation catheter (12) rotate around the central axis of the opening end of the guide catheter (11) ( Figure 3-4 ).

[0068] Figures 3-2 to 3-4 The internal structure in the second example is shown; the control parts in the handle (13) are composed of two...

example 3

[0073] In the third example of the present invention, the method of maintaining the curvature of the front end of the ablation catheter for mapping is to use a memory nickel-titanium alloy material (25) that has been plasticized in advance, and the front end can maintain the plastic curved shape after assembly. The third embodiment is otherwise identical to the first example.

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Abstract

The present invention relates to an apparatus for mapping and ablating renal nerves distributed on renal arteries. The apparatus comprises a guiding catheter, a mapping and ablating catheter, a handle and a joint, wherein the guiding catheter has a front end which can control a degree of curvature of the catheter and is internally provided with at least one chamber; the mapping and ablating catheter is arranged in one chamber of the guiding catheter and is provided with one or more electrodes and one or more detection devices at the head end; the mapping and ablating catheter has a front end which has a degree of curvature, can stretch out of or retract back in the guiding catheter and is rotatable; the handle connects the guiding catheter and the mapping ablation catheter and comprises one or more control elements which are used for move the guiding catheter and the mapping ablating catheter; and the joint is used for providing energies for the electrodes.

Description

[0001] This application claims priority from International Patent Application Serial No. PCT / IB2012 / 054303, filed August 24, 2012, and International Patent Application Serial No. PCT / IB2012 / 054310, filed August 24, 2012. technical field [0002] The present invention relates to a catheter device system for mapping and ablation of renal nerves distributed on the renal arteries in order to improve the accuracy, effectiveness and safety of renal nerve ablation through catheter interventional procedures to remove renal nerves. Background technique [0003] Renal sympathetic overexcitation is a pathophysiological mechanism in diseases such as congestive heart failure, hypertension, diabetes, chronic renal failure, and cardiac arrhythmia. The use of recently developed renal sympathetic denervation to treat these diseases is fundamentally related to the reduction of sympathetic hyperactivity by this therapy. Neurosurgery for treatment. The renal sympathetic nerve is considered as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
CPCA61B18/1492A61B18/20A61B2018/00214A61B2018/00404A61B2018/00434A61B2018/00511A61B2018/00577A61B2018/00791A61B2018/00839A61B2018/00875A61N1/0551A61N1/36017
Inventor 王捷李楚武王建聪邹波
Owner SYMAP MEDICAL (SUZHOU) LIMITED
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