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Deformable high-precision balloon heart chamber mapping catheter

A high-precision, catheter-based technology, applied in catheterization, diagnostic recording/measurement, medical science, etc., can solve problems such as poor contact and limited number

Pending Publication Date: 2019-02-19
WUXI PEOPLES HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a deformable high-precision balloon cardiac cavity mapping catheter to solve the problem of limited number of contact electrodes between the mapping catheter and the heart contact angle proposed in the background technology, and sometimes the problem of poor contact

Method used

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  • Deformable high-precision balloon heart chamber mapping catheter
  • Deformable high-precision balloon heart chamber mapping catheter
  • Deformable high-precision balloon heart chamber mapping catheter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A deformable high-precision balloon heart cavity mapping catheter, such as Figure 1 to Figure 4 As shown, it includes a catheter 1, an electrode tip 2 installed at one end of the catheter 1, and a handle 3 installed at the other end of the catheter 1. The bottom of the handle 3 is provided with a tail wire interface 31, and the electrode tip 2 is sequentially provided with The head-end electrode pair 21, the middle expansion body 22 and the rear-end expansion body 23, the electrode head 2 is provided with several first electrode pairs 24 on the side close to the middle expansion body 22 and the rear-end expansion body 23, and the head-end electrode pair 21 A magnetic sensor 26 is arranged at the center of the surface, and there are several second electrode pairs 25 in an annular array outside the magnetic sensor 26, and each first electrode pair 24 and each second electrode pair 25 are composed of two microelectrodes, and each The micro-electrodes are all connected to ...

Embodiment 2

[0036] Such as Figure 5 As shown, the surface of the handle 3 is provided with a liquid storage device 4, the liquid storage device 4 includes a liquid storage tube 41, one end of the liquid storage tube 41 is provided with a liquid outlet 42, and the other end of the liquid outlet 42 is provided with a liquid storage tube. 41 is inserted into the sealing tube 43 that fits, the other end of the liquid storage pipe 41 is provided with a push rod 44, one end of the push rod 44 is provided with a plug plate 45 that is slidably connected with the liquid storage pipe 41, and the other end of the push rod 44 is equipped with a push rod 44. The plate 46, the push plate 46 and the push rod 44 are integrally formed.

[0037] In this embodiment, the liquid outlet head 42 runs through the surface of the handle 3 and is adhered to the joint between the liquid outlet head 42 and the handle 3 by a sealant, so that the liquid enters the handle 3 from the liquid outlet head 42 .

[0038] Sp...

Embodiment 3

[0041] Insert the rear expansion body 23 of the electrode tip 2 into the catheter 1, and squeeze the push plate 46 so that the push rod 44 slides in the liquid storage tube 41, and press part of the liquid inside the liquid storage tube 41 into the catheter 1 and enter the electrode tip 2, at this time, the rear expansion body 23 is located in the catheter 1 and cannot expand, while the middle expansion body 22 is squeezed by the liquid to expand, forming a figure 2 At this time, the catheter 1 is inserted into the heart, and the electrode tip 2 is bent, and the electrode tip 2 is rotated so that the first electrode pair 24 and the second electrode pair 25 are fully in contact with the heart wall, and at the same time, they can enter the pulmonary vein, upper The vena cava, ventricular outflow tract and other parts can quickly build an accurate model of the part.

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Abstract

The invention relates to the technical field of medical equipment, in particular to a deformable high-precision balloon heart chamber mapping catheter. The catheter comprises a catheter body, an electrode tip end mounted at one end of the catheter body and a handle mounted at the other end of the catheter body. The electrode tip end is provided with a head end electrode pair, an intermediate expansion body and a rear end expansion body from left to right in sequence; the surface of the handle is provided with a liquid storage device, the liquid storage device includes a liquid storage tube, and one end of the liquid storage tube is provided with a liquid discharge head. The deformable high-precision balloon heart chamber mapping catheter has the advantages that by arranging the liquid storage device for injecting liquid to the electrode tip end and utilizing expansion of the head end electrode pair, intermediate expansion body and rear end expansion body to change the overall shape ofthe electrode head end, the catheter fits each part of the hear perfectly, the heart cannot be extruded, and there is no need to repeatedly bend the catheter in the heart chamber, so that convenienceis provided for high-precision mapping.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a deformable high-precision balloon heart cavity mapping catheter. Background technique [0002] Cardiac chamber mapping catheters were used to construct three-dimensional electroanatomical models of cardiac chambers. For various arrhythmias, especially complex arrhythmias, mastering the electrical conduction information and anatomical information of various parts of the cardiac chamber is crucial to clarify the mechanism of arrhythmia. For example, electrical anatomy of the left atrium must be constructed for pulmonary vein isolation in the treatment of atrial fibrillation. If the direction and length of the pulmonary vein muscle bundle can be grasped by constructing an accurate pulmonary vein vestibular electroanatomical model, the efficiency of pulmonary vein isolation can be improved. [0003] At present, the contact mapping catheters for cardiac chamber mapping ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/042
CPCA61B5/287A61B5/6858A61B2562/046A61B5/6853A61B2562/028A61B5/062A61M25/10182A61M25/10184A61M25/1025
Inventor 党时鹏王如兴张常莹李库林郑杰刘晓宇
Owner WUXI PEOPLES HOSPITAL