Pathological biopsy needle for eye trabecular meshwork tissue

By designing a pathological biopsy needle for the trabecular meshwork tissue of the eye and using a bendable scraper unit and a limiter, the problems of difficult sampling and severe trauma in the pathological diagnosis of glaucoma disease are solved, achieving the effects of accurate sampling and simplified operation.

CN120753872AActive Publication Date: 2025-10-10PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
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Patent Information

Application Number
CN202511169542.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-20
Publication Date
2025-10-10
Estimated Expiration
2045-08-20

AI Technical Summary

Technical Problem

In the existing technology, it is difficult to accurately obtain samples for the pathological diagnosis of glaucoma. In traditional trabeculectomy, cutting tissue blocks with a surgical blade causes large eye incision trauma and is time-consuming and labor-intensive.

Method used

A pathological biopsy needle for trabecular meshwork tissue of the eye is designed, comprising a needle, a scraper unit and a handle. The scraper unit is bendable and uses a curved hook with a groove to hook the trabecular meshwork and Schlemm's canal wall tissue. Combined with the use of a limiter and a pull line, it reduces eye trauma and simplifies operation.

Benefits of technology

It achieves precise sampling of trabecular meshwork and Schlemm's canal wall tissue, reduces eye incision trauma, simplifies the operation process, and reduces surgical difficulty and time.

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Abstract

The invention relates to a pathological biopsy needle for eye trabecular meshwork tissue, belongs to the technical field of medical instruments, and solves the problem that in the traditional trabectomy in the prior art, an eye tissue block containing trabecula and deep sclera is cut by a surgical blade, and the trauma of an eye incision is large. The device comprises a needle head, a scraper unit and a handle, the needle head is connected with the handle, the scraper unit is arranged in the needle head, the handle is used for being held by a user, the needle head is used for being inserted into an eyeball of a patient, and the scraper unit is used for cutting trabecular mesh and Schlemm tube wall tissue. The scraper unit is a bendable scraper unit, the first section, the second section and the third section can form a hook part with a groove, and the hook part with the groove is used for hooking trabecular meshes and Schlemm pipe wall tissues. The hook part with the groove is specially aligned to trabecular meshes and Schlemm tube wall tissues for hooking, and the trauma of an eye incision is small.
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