Subcutaneous implantable needle

By setting multiple protrusions on the push rod core to slide and engage with the inner wall of the needle seat, combined with the limiting sleeve and the tapered connecting part, the problems of high frictional resistance and complex assembly of subcutaneous implantation needles are solved, realizing single-handed operation and simplified assembly, and improving production efficiency and service life.

CN224506085UActive Publication Date: 2026-07-17SUZHOU LINGYAN MEDICAL DEVICES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU LINGYAN MEDICAL DEVICES
Filing Date
2025-04-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing subcutaneous implantable drug-eluting needles have high frictional resistance when the plunger and needle hub are engaged, making single-handed operation inconvenient and the assembly process complex.

Method used

A subcutaneous implantable drug needle is designed, in which multiple protrusions are set on the core rod of the push rod to slide and engage with the inner wall of the needle seat to reduce frictional resistance. The structure is optimized by using a limiting sleeve and a tapered connecting part to simplify the assembly process.

Benefits of technology

It significantly reduces the frictional resistance between the push rod and the needle seat, facilitates one-handed operation, simplifies the assembly process, improves production efficiency, reduces manufacturing costs, and extends service life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224506085U_ABST
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Abstract

The utility model provides a kind of subcutaneous implantation medicine needle, it includes needle holder, needle, medicine core, sheath, push rod and limit sleeve;Non tip of needle is located inside the first end of needle holder;Medicine core is located inside needle;Sheath is sleeved in the first end of push rod;Push rod includes stem, connecting rod and handle part, stem is inserted into needle holder from the second end of needle holder, and is inserted into inside needle;Multiple lugs are integrally formed on the outer wall of stem, multiple lugs are spaced arrangement in the circumferential direction and axial direction of stem, each lug is slidingly engaged with the inner wall of needle holder;Limit sleeve is sleeved on connecting rod.In the subcutaneous implantation medicine needle, multiple lugs and needle holder form spaced distribution contact area, can significantly reduce the frictional resistance between push rod and needle holder during operation process, facilitate user one-handed operation, make push operation more smooth;At the same time, lug is integrally formed on stem, without using rubber plug, can simplify assembly process, improve production efficiency, and reduce manufacturing cost.
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