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Double-layer basket catheter device

The technology of a catheter device and a mesh basket is applied in the field of a double-layer mesh basket catheter device, which can solve the problem of not being able to achieve arbitrary switching at the same time.

Pending Publication Date: 2022-06-28
ENCHANNEL MEDICAL GUANGZHOU INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the basket in the existing basket catheter is usually one layer. After being introduced into the catheter, only one effect of the electrode can be realized, that is, only contact mapping or non-contact mapping can be realized. Cannot be realized at the same time and arbitrarily switched between the two

Method used

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  • Double-layer basket catheter device
  • Double-layer basket catheter device
  • Double-layer basket catheter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Figure 1-2 A double-layer mesh basket catheter device according to an embodiment of the present invention is schematically shown, with a proximal end and a distal end, including: a catheter assembly 100, a first mesh basket 200, a second mesh basket 300, a plurality of first mesh baskets The electrode 400 , several second electrodes 500 and the lead 600 . The specific structure is as follows,

[0089] The catheter assembly 100, the proximal part is connected with the control handle 800, and the control handle 800 is used to control the basket part at the distal end of the device;

[0090] The first mesh basket 200 is arranged at the distal position of the catheter assembly 100;

[0091] The second mesh basket 300 is arranged at the distal position of the catheter assembly 100 and is located in the first mesh basket 200, that is, the second mesh basket 300 and the first mesh basket 200 are distributed inside and outside;

[0092] The guide head 600 connects the dista...

Embodiment 2

[0136] This embodiment is roughly the same as the above-mentioned embodiment, the difference is that it also includes a magnetic sensor 901 and a central reference electrode 902, as follows:

[0137] combine Figure 13 A magnetic sensor 901 is provided on the first catheter 110 near the distal end. The magnetic sensor 901 may be sleeved outside the first catheter 110 , or the magnetic sensor 901 may be wrapped inside the first catheter 110 . The magnetic sensor 901 is provided in the second mesh basket 300 , specifically, the magnetic sensor 901 is located at a distal position in the second mesh basket 300 . The catheter assembly 100 is provided with conductive wires that are independently connected to the magnetic sensor 901 and can be independently addressed.

[0138] combine Figure 13 , a central reference electrode 902 is embedded on the surface of the magnetic sensor 901 at the distal end of the first catheter 110. The central reference electrode 902 is used as a refer...

Embodiment 3

[0147] This embodiment is substantially the same as the above-mentioned embodiment, and the difference lies in the structure of the second mesh basket 300, which is as follows:

[0148] combine Figure 14-15 , the second mesh basket 300 includes a balloon 302 and a plurality of second splines 301 arrayed on the inner surface of the cavity of the balloon 302 . The arrangement structure of the second electrode 500 is the same as that of the previous embodiment. The second electrode 500 is embedded on the outer surface of the second spline 301 ; the balloon 302 has openings corresponding to the position of the second electrode 500 to expose the second electrode 500 .

[0149] combine Figure 14-15, the distal end of the balloon body of the balloon 302 is welded with the guide head 600 , the proximal end of the balloon body of the balloon 302 is sleeved on the connecting portion 141 , and the welding is realized; The compartment of the 120 forms a pressure delivery cavity, the f...

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Abstract

The invention discloses a double-layer basket catheter device which comprises a catheter assembly and a guide head. One end of the first mesh basket is connected to the far end of the catheter assembly, the other end of the first mesh basket is connected through a guide head, and multiple first electrodes are evenly distributed on the first mesh basket. One end of the second mesh basket is connected to the far end of the catheter assembly, the other end of the second mesh basket is connected through a guide head, and multiple second electrodes are evenly distributed on the second mesh basket; the first mesh basket and the second mesh basket can be synchronously expanded or contracted by operating the guide head; the second net basket is located in the first net basket. The first electrode can collect cardiac electrical signals when making contact with or not making contact with tissue, the second electrode collects the cardiac electrical signals in a non-contact mode, and collected information can be used for reflecting the spreading mode of cardiac electrical activity in different states. Clinical doctors are helped to judge an arrhythmia mechanism, and corresponding treatment strategies are formulated accordingly.

Description

technical field [0001] The invention relates to the technical field of catheter devices, in particular to a double-layer mesh basket catheter device. Background technique [0002] Electrophysiology catheters are often used to map electrical activity within the heart. Various electrode designs are known for different purposes. In particular, catheters having a basket-shaped electrode array are known. [0003] A basket catheter typically has an elongated catheter body and a basket-shaped electrode assembly mounted at the distal end of the catheter body. The basket assembly has proximal and distal ends, and includes a plurality of splines connected at the proximal and distal ends thereof. Each spline includes at least one electrode. The basket assembly has an expanded arrangement in which the ridges arcuate radially outward and a collapsed arrangement in which the splines are arranged generally along the axis of the catheter body. The catheter may also include a distal pos...

Claims

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Application Information

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IPC IPC(8): A61B18/12A61B18/14A61B34/20A61B90/00A61B5/318A61B5/287
CPCA61B18/12A61B18/1492A61B34/20A61B90/06A61B5/318A61B5/287A61B2018/00351A61B2018/00595A61B2018/1467A61B2034/2051
Inventor 冯君黄龙王本琪磨志岱李龙
Owner ENCHANNEL MEDICAL GUANGZHOU INC
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