Multi-layer composite peritoneal dialysis catheter outlet shallow infection control drug patch device

The multi-layer composite peritoneal dialysis catheter exit superficial infection control patch device, utilizing a four-arm polyethylene glycol polymer cross-linked chitosan hydrogel and a nickel-titanium alloy guide rod, solves the problems of limited drug delivery and poor drainage in peritoneal dialysis catheter exit infection, achieving a highly efficient and non-invasive infection control effect.

CN121845848BActive Publication Date: 2026-07-03FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
Filing Date
2026-03-16
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

In existing technologies, peritoneal dialysis catheter exit site infections are difficult to control effectively. Conventional dressing change methods have limitations in drug delivery, poor drainage, complex operation, and material defects, resulting in high infection risk, high pain scores, and difficult healing.

Method used

A multi-layer composite peritoneal dialysis catheter exit superficial infection control patch device is adopted, including the patch body, guide rod and traction strip. It utilizes four-arm polyethylene glycol high molecular cross-linked chitosan hydrogel to achieve targeted drug delivery and pus drainage. The nickel-titanium alloy guide rod provides non-invasive fixation, and polylactic acid/calcium carbonate composite fiber provides mechanical support and fixation.

Benefits of technology

It achieves a three-fold increase in subcutaneous targeted drug delivery, a five-fold increase in drainage efficiency, and a pain score reduction to below 2 points. The device has a shelf life of 24 months and is suitable for home dialysis scenarios.

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Abstract

The present application relates to a kind of multi-layer composite peritoneal dialysis catheter outlet superficial infection control drug patch device, belong to medical instrument technical field.The device includes drug patch body, guide rod, pull strip;The top of guide rod is fixedly connected with the right side of drug patch body;The upper portion of pull strip is fixedly connected with the lower portion of drug patch body;The device of the present application can realize subcutaneous targeted drug delivery, efficient pus adsorption drainage, non-invasive fixation function, convenient replacement and other functions by optimizing structure design and material selection, especially suitable for the superficial infection site that conventional dressing change is difficult to handle.
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