A double-balloon anti-infection three-lumen catheter

The triple-lumen catheter, designed with an inner and outer double-balloon structure and antibiotic tablets, solves the problem of unstable fixation of single-balloon catheters, achieving stable positioning and anti-infection effects, and improving the reliability of catheter clinical applications and urine drainage efficiency.

CN120837816BActive Publication Date: 2026-06-02ZHEJIANG PROVINCIAL LITONGDE HOSPITAL (ZHEJIANG PROVINCIAL INST OF MENTAL HEALTH)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG PROVINCIAL LITONGDE HOSPITAL (ZHEJIANG PROVINCIAL INST OF MENTAL HEALTH)
Filing Date
2025-07-21
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing three-lumen urinary catheters have problems with their fixation methods. If the single balloon expands too much, it affects urine drainage, and if it expands too little, it is difficult to stabilize the position, resulting in insufficient reliability in clinical applications.

Method used

It adopts a double-balloon structure with inner and outer layers. When the outer balloon is inflated to the appropriate size, the inner balloon provides pressure protection for the tube. The inner and outer balloons work together to position the tube, and combined with the design of antibiotic tablets, it achieves stable fixation and anti-infection effects.

Benefits of technology

It improves the stability and reliability of the urinary catheter, ensures smooth urine drainage, and reduces the risk of urinary tract infections through the design of antibiotic tablets.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a double-balloon anti-infection three-lumen urinary catheter, comprising a catheter body (1), one end of which has a urinary inlet (2), and the other end of which is provided with a flushing head (3), a drainage head (4), and an inflation head (5); the drainage head (4) has a urinary clamp (6), and the catheter body (1) is provided with an outer balloon (7) and an inner balloon (8) for positioning the catheter body (1) near the urinary inlet (2). The outer balloon (7) and the inner balloon (8) are respectively connected to corresponding air passages (13), which pass through the catheter body (1) and have their inflation ends located inside the inflation head (5). This invention, through its inner and outer double-balloon structure, enables the inner balloon to provide pressure protection for the catheter body when the outer balloon is inflated to a suitable size.
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