Ablation device having pressure detection function

A pressure and mapping technology, applied to heating surgical instruments and other directions, can solve the problems of high manufacturing cost, increased manufacturing cost, and difficult process, and achieve the effects of guaranteed treatment effect, low manufacturing cost, and convenient operation.

Inactive Publication Date: 2017-01-11
SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During ablation catheter therapy, the catheter is inserted into the heart and the distal end of the catheter is in contact with the inner wall of the heart. During this process, it is usually important to make the distal end of the catheter in good contact with the inner wall of the heart. Otherwise, excessive pressure may cause damage to the heart. Undesirable damage to heart tissue, or even perforation of the heart wall, and too little pressure cannot achieve the therapeutic purpose of complete ablation
[0004] The existing technology uses electromagnetic or optical technology to measure the contact pressure between the distal end and the tissue, which requires high and complex equipment, and the manufacturing cost is relatively high.
[0005] As mentioned in the Chinese patent CN103908337AZ, a sensor using magnetic induction is added to the catheter to sense the contact force between the distal end of the catheter and the organ. This sensor is easily distorted by the interference of an external magnetic field in application, and this technology requires It is difficult to install multiple magnetic sensors in the extremely small space at the end, which increases the manufacturing cost

Method used

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  • Ablation device having pressure detection function
  • Ablation device having pressure detection function
  • Ablation device having pressure detection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 2 , 3 , 8, 9, 15, 16, 17, an ablation device with pressure detection, which is used to insert into the patient's body to ablate tissue (such as figure 1 , after the terminal electrode 1 contacts the tissue, it will be bent relative to the previous state), which includes a main body 5 that can be pulled and bent by the pulling wire 12, the head end of the main body 5 is installed with the terminal electrode 1 for ablation, the main body The inside of 5 is provided with a perfusion tube 8 communicating with the terminal electrode 1. The terminal electrode 1 is provided with a perfusion hole 11, which communicates with the terminal electrode 1. The perfusion tube 8 is used for the output of the perfusion hole 11 on the surface of the terminal electrode 1. liquid,

[0052] The center of the tail of the terminal electrode 1 is matched with the head end of the main body 5 through a support tube 18, and the support tube 18 is matched with the outer wall of t...

Embodiment 2

[0061] Such as figure 2 , 3 , 7, 10, 15, 16, 17, an ablation device with pressure detection, which is used to insert into the patient's body to ablate tissue (such as figure 1 , after the terminal electrode 1 contacts the tissue, it will be bent relative to the previous state), which includes a main body 5 that can be pulled and bent by the pulling wire 12, the head end of the main body 5 is installed with the terminal electrode 1 for ablation, the main body The inside of 5 is provided with a perfusion tube 8 communicating with the terminal electrode 1. The terminal electrode 1 is provided with a perfusion hole 11, which communicates with the terminal electrode 1. The perfusion tube 8 is used for the output of the perfusion hole 11 on the surface of the terminal electrode 1. liquid,

[0062] The center of the tail of the terminal electrode 1 is matched with the head end of the main body 5 through a support tube 18, and the support tube 18 is matched with the outer wall of ...

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Abstract

The invention relates to the field of ablation devices, and particularly relates to an ablation device having a pressure detection function. The ablation device includes a main tube which can be drawn and bent by a drawing steel wire; a tail end electrode for ablation is arranged on a head of the main tube; an infusion tube communicating with the inner part of the tail end electrode is arranged in the main tube and is used for allowing liquid output of an surface of the tail end electrode; the center of the tail of the tail end electrode is connected to an elastic member; the elastic member is arranged on an outer wall of the infusion tube; the outer wall of the infusion tube is connected to the main tube through a pipe; the elastic member includes an intermediate small-diameter section, wherein the diameter of the small-diameter section is less than the diameter of two side sections of the elastic member; the elastic member is configured to deform with the pressure of a tissue acted on the tail end electrode; and a sensor for measuring the pressure according to the deformation of the elastic member is arranged on the elastic member. The ablation device is accurate in pressure measurement, is low in production cost, and is easy to operate.

Description

technical field [0001] The invention relates to the field of ablation equipment, in particular to an ablation device with pressure detection. Background technique [0002] Cardiac arrhythmia is one of the most common arrhythmia diseases in the world. Clinical application of catheter radiofrequency ablation has been widely used in the treatment of this type of disease. Radiofrequency energy is transmitted through the catheter to the electrode and the site where the electrode contacts and the surrounding myocardial tissue for ablation. It has been clinically proven that ablation can achieve better therapeutic effect only when the contact pressure between the electrode at the distal end of the catheter and the myocardial tissue is appropriate. [0003] During ablation catheter therapy, the catheter is inserted into the heart and the distal end of the catheter is in contact with the inner wall of the heart. During this process, it is usually important to make the distal end of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12
Inventor 邹波朱晓林张松祥
Owner SICHUAN JINJIANG ELECTRONICS SCI & TECH CO LTD
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