An arteriovenous simulation device with easy replacement of tubing

By designing an arteriovenous simulation device with a sheath and support block structure, the problems of easy catheter damage and accidental puncture were solved, enabling convenient replacement and accurate judgment, reducing costs and improving learning effectiveness.

CN224501392UActive Publication Date: 2026-07-14ZHONGSHAN HOSPITAL FUDAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGSHAN HOSPITAL FUDAN UNIV
Filing Date
2025-07-11
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing arteriovenous simulation devices are prone to breakage or aging, and the catheters cannot be replaced individually, increasing costs. At the same time, the lack of a way to distinguish between arteries and veins leads to frequent accidental punctures.

Method used

An arteriovenous simulation device was designed, comprising a sheath and a support block. The sheath contains a connecting hole and a catheter, and the support block has a circumferential groove for tubing. The catheter and sheath can be easily replaced by a rotating rod and a limiting plate structure, and different colored liquids are used to simulate arteriovenous blood.

Benefits of technology

It enables the separate replacement of catheters and sheaths, reducing replacement costs, and improves the accuracy of simulation learning by judging the correctness of puncture through the color of the fluid.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of arteriovenous simulation equipment convenient for pipeline replacement, belong to medical technical field. Mainly including one end opening's cover film, the cover film is consistent with the arm contour of person, the inside of the cover film is provided with support block, the support block is provided with intercommunication hole, the intercommunication hole will support block both ends intercommunication, the intercommunication hole is provided with several catheter, one end of the catheter is inserted into cover film inside after passing through intercommunication hole, then, it is stretched out cover film by passing through between cover film and support block, the support block is used to support cover film and catheter, the cover film is used to simulate skin, the catheter is used to simulate artery and vein. One end of the catheter is respectively connected with delivery pump, fresh red liquid is delivered in the catheter for simulating artery, dark red liquid is delivered in the catheter for simulating vein. The arteriovenous simulation equipment convenient for pipeline replacement of the application reaches the effect that pipeline is replaced conveniently.
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