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Corrugated radiofrequency ablation catheter and radiofrequency ablation device

A radiofrequency ablation and corrugated technology, applied in the field of radiofrequency ablation equipment and corrugated radiofrequency ablation catheters, can solve the problems such as the limitations of adaptability of blood vessels with different diameters, and achieve the effect of reducing difficulty and facilitating movement

Active Publication Date: 2015-12-09
SHANGHAI GOLDEN LEAF MED TEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various existing radiofrequency ablation catheters have limitations in adaptability to blood vessels of different diameters

Method used

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  • Corrugated radiofrequency ablation catheter and radiofrequency ablation device
  • Corrugated radiofrequency ablation catheter and radiofrequency ablation device
  • Corrugated radiofrequency ablation catheter and radiofrequency ablation device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0054] combine Figure 1A to Figure 5B It can be seen that the corrugated radiofrequency ablation catheter provided by the present invention includes a long connecting catheter 10, and a corrugated electrode holder is provided at the front end of the connecting catheter 10 (see Figure 1A ), the rear end of the connecting conduit 10 is provided with a control handle 20 (see Figure 5A with 5B ). In actual production, the electrode holder can be made integrally with the connecting catheter 10 , and the electrode holder is the corrugated part of the front end of the connecting catheter 10 ;

[0055] Such as Figure 1A As shown, the corrugated electrode holder includes an outer tube 1 and one or more electrodes 2 arranged on the outer tube 1 . The outer tube 1 is shaped into a corrugated shape consisting of one or more corrugations. The shape of the corrugation can be a broken line composed of multiple straight lines, such as a triangular wave; the shape of the corrugation can ...

no. 2 example to no. 4 example

[0069] in such as Figure 9A with Figure 9B In the second embodiment shown, every two arcuate waves lie in a plane, so that the multiple corrugations appear in their side projections as Figure 9B The divergent shape shown. A plurality of electrodes 2 may be respectively distributed on each corrugation, wherein it is preferable to arrange the electrodes 2 at the crest / valley position of the corrugation. from Figure 9B It can be seen from the schematic side view that, in this embodiment, the corrugations in the corrugated electrode holder cross each other on the side projection, and a plurality of electrodes 2 are respectively arranged at the positions of the crests (or troughs). When the corrugations intersect with each other at the same angle, the plurality of electrodes 2 can be evenly distributed around the circumference on the side projection of the electrode holder, that is, approximately circumferentially distributed on the outer circumference of the target lumen. ...

no. 5 example

[0075] combine Figure 12A to Figure 17 It can be seen that in the radiofrequency ablation catheter provided in this embodiment, the outer tube 1 of the electrode holder and the inside of the connecting catheter 10 are also provided with a lumen for accommodating the apposition adjustment wire 8, and the rear section of the apposition adjustment wire 8 can slide is arranged in one of the lumens of the connecting catheter, and its rear end 80 is connected to the control member 23 provided on the outside of the control handle 20 (see Figure 17 ), the adherence adjustment wire 8 can slide back and forth in the lumen of the connecting catheter. The lumen for accommodating the alignment adjustment wire 8 may be a central lumen, or one of multiple eccentric lumens distributed around the central lumen. Such as Figure 12A As shown, the front section of the wall-attachment adjustment wire 8 passes through the outside of the electrode bracket from the hole near the rear end of the e...

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Abstract

The invention provides a corrugated radiofrequency ablation catheter and a radiofrequency ablation device. The corrugated radiofrequency ablation catheter is provided with an elongated connecting catheter body, an electrode holder is arranged at the front end of the connecting catheter body, and a control handle is arranged at the rear end of the connecting catheter body; the electrode holder is a corrugated electrode holder composed of one or more corrugations, and one or more electrodes are distributed on the corrugations; a slidable supporting wall-attached adjusting wire is arranged in one tubular cavity of the electrode holder and the connecting catheter body, and is divided into a flexible section away from the control handle and a rigid section close to the control handle. The shape of the corrugated section of the catheter is changed without the aid of other equipment by forwards feeding or backwards pulling the supporting wall-attached adjusting wire, difficulty in that the radiofrequency ablation catheter enters a guiding catheter / sheath is lowered greatly, great convenience is brought to the corrugated electrode holder to move in the target tubular cavity, operation is facilitated, and the structure is simple.

Description

technical field [0001] The invention relates to a corrugated radio frequency ablation catheter and a radio frequency ablation device including the above radio frequency ablation catheter, belonging to the technical field of interventional medical devices. Background technique [0002] In the radiofrequency ablation system, the radiofrequency ablation catheter is a key device used to intervene in human blood vessels and release radiofrequency energy. Wherein, the radiofrequency electrode is installed on the stent at the front end of the radiofrequency ablation catheter, and the stent is used to carry the radiofrequency electrode, expand and adhere to the wall before the radiofrequency starts, and retract after the radiofrequency ends. Since the radiofrequency ablation operation is directly intervening in human blood vessels, the expansion and contraction size of the stent should be adapted to the diameter of human blood vessels. [0003] The diameter of blood vessels in the ...

Claims

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Application Information

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IPC IPC(8): A61B18/12
Inventor 董永华沈美君
Owner SHANGHAI GOLDEN LEAF MED TEC
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