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Balloon catheter special for internal arteriovenous fistula in hemodialysis

A hemodialysis and balloon catheter technology, applied in the field of hemodialysis, can solve the problems of long operation time, affecting the success rate of operation, and high operation requirements

Pending Publication Date: 2021-05-11
贺敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The existing balloon catheter has the following deficiencies: 1. The operation steps are cumbersome, the operation time is long, and the internal fistula stenosis (or occlusion) lesion is very stubborn, and it is seldom able to expand successfully at one time, so it is necessary to repeat steps 4 and 5 many times, back and forth Use contrast catheters and balloon catheters interchangeably; 2. In the process of exchanging contrast catheters and balloon catheters, it is necessary to keep the position of the ultra-smooth guide wire basically unchanged, which requires high operating requirements and is time-consuming and laborious
Ultimately affect the success rate of surgery

Method used

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  • Balloon catheter special for internal arteriovenous fistula in hemodialysis
  • Balloon catheter special for internal arteriovenous fistula in hemodialysis
  • Balloon catheter special for internal arteriovenous fistula in hemodialysis

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0032] It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, use a specific Azimuth configuration and operation, therefore, should not be construed as limiting the invention.

[0033] Such as Figure 1-5 A...

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Abstract

The invention discloses a special balloon catheter for internal arteriovenous fistula in hemodialysis. The special balloon catheter comprises a balloon and a catheter arranged on the balloon in a penetrating manner, and also comprises a catheter extension part communicating with the catheter positioned at the front end of the balloon. The special balloon catheter has the advantages that an angiographic catheter does not need to be additionally and independently arranged, the functions of the balloon catheter and the angiographic catheter can be combined into a whole, the balloon catheter and the angiographic catheter do not need to be repeatedly switched, fed in and drawn out, operation time is saved, damage to surrounding tissue of blood vessels is remarkably reduced, and the operation success rate is increased.

Description

technical field [0001] The invention relates to the technical field of hemodialysis. More specifically, the present invention relates to a special balloon catheter for hemodialysis arteriovenous fistula. Background technique [0002] An arteriovenous fistula is a permanent vascular access for hemodialysis. Under normal circumstances, the doctor cuts off the cephalic vein of the patient's forearm through surgery, and performs an end-to-side anastomosis with the radial artery to form an arteriovenous fistula ( figure 1 ), it can be used for hemodialysis after the internal fistula matures. After long-term use of this internal fistula, local vascular stenosis or occlusion may occur (the most common lesion is the cephalic vein about 1 to 3 cm away from the anastomotic stoma), which cannot meet the needs of dialysis (malfunction or loss of function). Balloon dilatation of the arteriovenous fistula is one of the options for treating this condition (underfunctioning or non-functi...

Claims

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Application Information

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IPC IPC(8): A61M25/10A61M29/02
CPCA61M25/1018A61M25/104A61M29/00A61M2025/105A61M2025/1063
Inventor 刘涛
Owner 贺敏
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