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Electrophysiological catheter

An electrophysiology and catheter technology, applied in the field of medical devices, to achieve the effect of improving the adhesion force, short treatment time and good treatment effect

Active Publication Date: 2018-07-03
SHANGHAI MICROPORT EP MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is no relevant report on how to obtain a good adhering force between the distal electrode and the tissue

Method used

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  • Electrophysiological catheter
  • Electrophysiological catheter
  • Electrophysiological catheter

Examples

Experimental program
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Effect test

Embodiment 1

[0059] figure 1 It is a structural schematic diagram of the electrophysiological catheter 10 according to the first embodiment of the present invention. Such as figure 1 As shown, the electrophysiological catheter 10 includes a catheter body 11 , an electrode 12 and a force applying mechanism 13 . The catheter body 11 comprises a connected body section 11a and an annular section 11b. The electrodes 12 are arranged on the annular segment 11b for realizing unipolar or bipolar discharge ablation, the number of which can be one or more. If there are multiple electrodes 12, multiple electrodes 12 are arranged at intervals on the ring segment 11b along the extending direction of the ring segment 11b. Herein, the electrophysiological catheter of the present invention is described in detail by taking a plurality of electrodes 12 as an illustration, but it should not be limited thereto.

[0060] When working, the force applying mechanism 13 is used to contact the ring segment 11b t...

Embodiment 2

[0091] The difference from Embodiment 1 lies in the force application mechanism 13. The force application mechanism 13 in this embodiment includes a guide wire 132 and a support 133, the guide wire 132 is used to connect with the ring segment 11b, and the support The member 133 is used to contact the ring segment 11b along the extending direction of the guide wire 132 to apply pressure to the ring segment 11b.

[0092] Such as Figure 7 As shown, it is a schematic structural diagram of the electrophysiological catheter 20 according to the second embodiment of the present invention. The distal end of the guide wire 132 passes through the lumen of the main body section 11a, and then penetrates obliquely through the side wall of the main body section 11a and directly connects with the annular section 11b. Then, the support member 133 is sleeved on the guide wire 132 along the extending direction of the guide wire 132 and can slide relative to the guide wire 132 , and the user ca...

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Abstract

The invention provides an electrophysiological catheter, which comprises a catheter body, electrodes and a force application mechanism, wherein the catheter body comprises a main body section and an annular section which are connected; the electrodes are arranged on the annular section; one part of the force application mechanism is arranged in the main body section, and the other part extends outof the main body section and gets into contact with the annular section so as to apply pressure to the annular section, so that the electrodes at the distal end of the catheter are applied by axial force from the catheter and are applied by axial force from the force application mechanism; therefore, axial force of the electrodes at the distal end of the catheter is increased in overall, and a clinging performance and clinging force of the electrode in contact with tissues are improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an electrophysiological catheter. Background technique [0002] In recent years, catheter ablation of pulmonary vein isolation has been widely used to treat atrial arrhythmias, especially atrial fibrillation, and has been accepted by major arrhythmia centers. However, the recurrence rate, especially the long-term recurrence rate, is still high in the treatment of AF with pulmonary vein isolation. Therefore, how to reduce the recurrence rate of AF treatment has become an urgent problem to be solved. [0003] There are many factors that affect the treatment effect of atrial fibrillation, among which the adhering force of the tissue during ablation is an important influencing factor. Within a certain range, the greater the ablation force, the deeper the ablation depth, the larger the damage area, and the better the treatment effect. Currently, there are many ablation cath...

Claims

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Application Information

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IPC IPC(8): A61B18/14A61B18/12
CPCA61B18/12A61B18/14A61B2018/1467
Inventor 李毅刚谭家宏
Owner SHANGHAI MICROPORT EP MEDTECH CO LTD