Integrated stable puncture outfit

The integrated design of the puncture cannula and locking structure solves the problem of easy leakage at the connection of traditional puncture devices, achieving higher structural strength and sealing effect, simplifying the production process, and ensuring the stability and safety of pneumoperitoneum.

CN224269410UActive Publication Date: 2026-05-26CHANGZHOU 3R MEDICAL DEVICE TECH CO LTD
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Patent Information

Application Number
CN202520195683.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-08
Publication Date
2026-05-26
Estimated Expiration
2035-02-08

AI Technical Summary

Technical Problem

Traditional trocars use a separate design between the cannula and the inflation valve, which is prone to wear and leakage at the connection point. Furthermore, the manufacturing process requires two sets of molds, affecting the stability and safety of the pneumoperitoneum.

Method used

An integrated stable puncture device was designed, in which the puncture cannula, inner tube, and venting tube on the outside of the puncture cannula are integrated into one unit. A stable connection is achieved through an arc-shaped locking plate and an L-shaped locking buckle, which prevents leakage at the connection and simplifies the production process.

Benefits of technology

It improves the structural strength and sealing effect of the connection, prevents leakage, simplifies the production process, and ensures the stability and safety of the pneumoperitoneum.

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Abstract

The utility model discloses an integrated stable puncture outfit, which relates to the technical field of medical instruments and comprises a puncture cannula, a sealing cover is clamped and matched above the puncture cannula, a puncture rod penetrates through the sealing cover, one end of the puncture rod is fixedly connected with a pressing cap, and the other end of the puncture rod is fixedly connected with a puncture needle. The other end of the puncture rod extends to the lower part of the puncture sleeve; wherein the puncture cannula comprises an outer tube and an inner tube which are integrally arranged, an outer cannula is further integrally arranged at the bottom of the inner tube, and a breather tube communicated with the inner tube is integrally arranged on the side face of the outer tube; according to the utility model, the breather pipe and the outer pipe are integrally arranged through the outer pipe and the inner pipe, and the integrally formed puncture cannula can improve the sealing effect and the structural strength between the breather pipe and the outer pipe, and only a single set of die is needed for processing during production, so that the production cost is reduced. And the breather pipe does not need to be independently processed by using an additional mold, so that the steps during production of the puncture cannula are saved.
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