Intracardiac defibrillation catheter

A catheter and cardiac chamber technology, applied in the field of intracardiac defibrillation catheters, can solve the problems of lower ratio, short circuit, and increased space ratio, and achieve the effects of preventing short circuit, easy to manufacture, and excellent torque transmission.

Inactive Publication Date: 2018-10-23
JAPAN LIFELINE CO LTD
View PDF17 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, the space ratio of the tube member having a guide wire lumen in addition to the lumen for extending the guide wire and the operating wire becomes higher (resin ratio becomes lower), and the lumen for extending the first guide wire group and the The wall thickness of the resin separated by the lumen for the extension of the second lead group also becomes thinner, so when the voltage required for defibrillation is applied, there will be a gap between the first lead group (the first DC electrode group) and the second lead group (the second lead group). The risk of short circuit between two DC electrode groups)
[0014] In addition, the torque transmission performance of the defibrillation catheter having a tube member with a high space ratio (low resin ratio) due to the lead wire lumen is deteriorated

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intracardiac defibrillation catheter
  • Intracardiac defibrillation catheter
  • Intracardiac defibrillation catheter

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0046] figure 1 ~ Figure 3 ( Figure 3A with Figure 3B ) shows the defibrillation catheter 100 of this embodiment is equipped with a multi-lumen tube 10, a handle 20 connected to the base end of the multi-lumen tube 10, eight ring-shaped electrodes 31 mounted on the front end region of the multi-lumen tube 10 The constituted first DC electrode group 31G, the second DC electrode group 32G composed of eight annular electrodes 32 separated from the first DC electrode group 31G toward the proximal end side and attached to the front end region of the multi-lumen tube 10, are attached to the Four annular electrodes 33 for potential measurement in the front end region of the multi-lumen tube 10 between the first DC electrode group 31G and the second DC electrode group 32G, the front-end chip 35 mounted on the front end of the multi-lumen tube 10, and the The first lead group 41G constituted by the lead wires 41 respectively connected to the electrodes 31 constituting the first DC...

no. 2 approach ＞

[0134] Figure 4 is a plan view showing defibrillation catheter 200 according to this embodiment, Figure 5 is a cross-sectional view of the front end region of the defibrillation catheter 100 ( Figure 4 C-C section view).

[0135] The defibrillation catheter 200 of the present embodiment is equipped with: a multi-lumen tube 60 with a flexible front end, a control handle 80 connected to the base end of the multi-lumen tube 60 , a The first DC electrode group 31G composed of eight ring-shaped electrodes 31, and the first DC electrode group 32 composed of eight ring-shaped electrodes 32 separated from the first DC electrode group 31G to the base end side and installed on the flexible part of the front end of the multi-lumen tube 60. Two DC electrode groups 32G, four annular electrodes 33 installed in the multi-lumen tube for potential measurement of the front end flexible part of the multi-lumen tube 60 between the first DC electrode group 31G and the second DC electrode grou...

no. 3 approach ＞

[0162] Image 6 It is a cross-sectional view showing the distal end region of the defibrillation catheter 300 according to this embodiment.

[0163] The appearance shape of this defibrillation catheter 300 and figure 1 with figure 2 The defibrillation catheter 100 in the first embodiment shown is the same, so its illustration is omitted. Image 6 The cross section shown is with the figure 2 The cross-section at the same position of the B-B section view.

[0164] The defibrillation catheter 300 of the present embodiment includes a multi-lumen tube 70 , a handle connected to the proximal end of the multi-lumen tube 70 , and a first DC electrode composed of eight annular electrodes attached to the front end region of the multi-lumen tube 70 . The first DC electrode group and the second DC electrode group consisting of eight ring-shaped electrodes that are separated from the first DC electrode group toward the proximal end and mounted on the front end region of the multi-lu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The purpose of the present invention is to provide a defibrillation catheter which can be inserted into a target position within a cardiac cavity along a guide wire and is able to reliably prevent a short circuit between a first lead wire group and a second lead wire group. This defibrillation catheter is provided with: a multi-lumen tube (10); a first DC electrode group (31G); a second DC electrode group (32G); a first lead wire group (41G) comprising lead wires (41) connected to the respective constituent electrodes (31) of the first DC electrode group (31G); and a second lead wire group (42G) comprising lead wires (42) connected to the respective constituent electrodes (32) of the second DC electrode group (32G). The defibrillation catheter applies a voltage between the first DC electrode group (31G) and the second DC electrode group (32G). The multi-lumen tube (10) comprises a center lumen (10L) through which the guide wire can be inserted, and a sub-lumen (11L) and a sub-lumen (12L) facing each other on both sides thereof. The first lead wire group (41G) extends through the sub-lumen (11L) and the second lead wire group (42G) extends through the sub-lumen (12L).

Description

technical field [0001] The present invention relates to intracardiac defibrillation catheters that are inserted into a heart chamber to ablate atrial fibrillation. Background technique [0002] Electrical defibrillation is required in cases of atrial fibrillation during cardiac catheterization. The present applicant proposes an intracardiac defibrillation catheter as a catheter for performing the defibrillation in the heart chamber, comprising an insulating tube member having a multi-lumen structure, a handle connected to the proximal end of the tube member, and a A first DC electrode group consisting of a plurality of ring-shaped electrodes in the front end region of the tube member, a second DC electrode group consisting of a plurality of ring-shaped electrodes separated from the first DC electrode group toward the proximal end and attached to the tube member. A DC electrode group, a first lead group composed of lead wires respectively connected to the electrodes constitu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): A61N1/39A61N1/05
CPCA61N1/39A61N1/05A61N1/0563A61M25/0026A61M25/005A61M25/0082A61N1/057A61M2205/054A61M2025/0095A61M25/0136A61N1/0587A61N1/3956
Inventor佐佐木卓也
OwnerJAPAN LIFELINE CO LTD