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Radio-frequency ablation catheter for accurately positioning lower esophageal sphincter

A precise positioning and radiofrequency ablation technology, applied in catheters, applications, muscle training equipment, etc., can solve problems such as the inability to achieve real-time, precise positioning, bending or even coiling, affecting the measurement and judgment of the real position of the LES, to improve the treatment effect, Avoid inaccurate positioning and reduce the effect of adverse reactions

Pending Publication Date: 2017-02-22
SHANDONG UNIV QILU HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the LES position measured by conventional esophageal manometry is the distance from the outer edge of the nasal ala, while the reference data for radiofrequency ablation treatment is the distance from the LES to the incisors, and it is difficult to accurately convert the two in clinical work
Third, during conventional esophageal pressure measurement, the thin and flexible manometry catheter is easy to bend or even coil in the esophageal lumen, which also seriously affects the measurement and judgment of the true position of the LES
The above three objective conditions make it impossible to implement precise treatment of GERD through real-time and precise positioning of LES

Method used

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  • Radio-frequency ablation catheter for accurately positioning lower esophageal sphincter
  • Radio-frequency ablation catheter for accurately positioning lower esophageal sphincter
  • Radio-frequency ablation catheter for accurately positioning lower esophageal sphincter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A radiofrequency ablation catheter for precise positioning of the lower esophageal sphincter, the structure of which is as follows figure 1As shown, it includes: a catheter handle 1 and a catheter body, the proximal end of the catheter body is connected to the catheter handle 1, and the distal end of the catheter body is sequentially provided with a catheter part 2 at the proximal end of the balloon part, a balloon part 3 and a catheter body. The catheter part 4 at the far end of the balloon part, place the solid-state pressure sensor 5 at the level of the pinholes 10 (4 channels) of the four inherent support arms of the balloon part, and connect the solid-state pressure sensor 5 and the pressure measuring host by a wire 7 8 connection, the wire 7 runs in the catheter lumen. The height of the solid-state pressure sensor is adjusted by a push-pull button 6 installed at the catheter handle 1 . When the balloon is in a collapsed state (no gas filling), after pushing the b...

Embodiment 2

[0046] On the basis of ensuring the identification of the location of the LES, in order to reduce material costs, the solid-state pressure sensor 5 in Embodiment 1 can be placed at the level of one of the needle holes 10 in the catheter (single channel), or placed in two symmetrical needle holes in the catheter The level of 10 (double passage), all the other are with embodiment 1.

Embodiment 3

[0048] In order to improve the resolution of pressure measurement, and then more accurately locate the LES, on the basis of the radiofrequency ablation catheter in Example 1, four identical support arms 11 are further symmetrically added outside the balloon, and the solid-state pressure sensor It is placed at the pinhole level of the four support arms respectively, and forms an 8-channel pressure measurement system together with the original four solid-state pressure sensors. Its structure is as image 3 shown.

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Abstract

The invention discloses a radio-frequency ablation catheter for accurately positioning the lower esophageal sphincter (LES). The radio-frequency ablation catheter comprises a catheter handle and a catheter body, wherein the near end of the catheter body is connected with the catheter handle; a catheter part at the near end of a saccule part, a saccule part and a catheter part at the far end of the saccule part are sequentially arranged at the far end of the catheter body; and a pressure sensor is arranged on at least one of the saccule part, the catheter part at the far end of the saccule part and the catheter part at the near end of the saccule part. In the invention, a pressure measuring device is added to the radio-frequency ablation catheter and used for measuring the esophagus pressure in real time and accurately positioning the LES, then purposeful radio-frequency ablation treatment can be performed on the LES, the treatment effect is improved, adverse reactions of the treatment are reduced, and accurate treatment of reflux esophagopathy is possible.

Description

technical field [0001] The invention relates to a novel radio frequency ablation catheter, in particular to a radio frequency ablation catheter for precise positioning of lower esophageal sphincter by means of a pressure measuring device. Background technique [0002] Abnormal lower esophageal sphincter (LES) pressure is one of the main causes of gastroesophageal reflux disease (Gastroesophageal RefluxDisease, GERD). The LES is a structural functional area located at the lower end of the esophagus with a length of about 2-4 cm. At rest, the pressure of the LES is maintained at 10-30mmHg to prevent the reflux of gastric contents into the esophagus. Transient LES relaxation (TLESR) is considered to be an important factor leading to GERD. [0003] Radiofrequency ablation is an emerging technology for the treatment of GERD, and its effectiveness has been initially confirmed. The radiofrequency ablation device will heat the LES muscular layer, reduce the compliance of the LES,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/12A61B18/14A61B5/22
CPCA61B5/22A61B5/4233A61B5/6852A61B5/687A61B18/12A61B18/14A61B2018/00488A61B2018/00773
Inventor 李延青李月月左秀丽
Owner SHANDONG UNIV QILU HOSPITAL
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