Annular cutter for taking strip-shaped bones
By designing a ring-shaped tool with serrated edges and an inclined second cutting edge, the problems of root severing and preventing bone tissue detachment in existing trephine structures were solved, achieving an efficient and safe strip bone removal process.
CN223886935UActive Publication Date: 2026-02-10ZHEJIANG FRIEND MEDICAL TECH CO LTD
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Patent Information
- Application Number
- CN202520249904.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Technical Problem
Existing trephine structures are difficult to effectively sever roots and prevent bone tissue from falling off when drilling strip-shaped bones, and have low material feeding efficiency.
Method used
Design a ring-shaped cutting tool with a serrated first cutting edge and an inclined second cutting edge. The second cutting edge is bent inward and backward to cut the connection between the strip bone and the surrounding bone tissue and to support the obtained bone tissue to prevent it from falling off.
Benefits of technology
It enables smooth feeding and efficient root cutting when drilling strip bone, avoids bone tissue loss during transfer, and improves the convenience and safety of operation.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model discloses an annular cutter for taking strip-shaped bones, which relates to the technical field of medical instruments and comprises a tubular cutter body, cutting edges are arranged at the cutting end of the cutter body and comprise a first cutting edge and a second cutting edge, the first cutting edge is zigzag, and the second cutting edge is zigzag. The orientation of the first cutting edge is parallel to the axial direction of the cutter body; and the second cutting edge is inclined towards the inner side of the cutter body. In the using process, by swinging the cutter in the radial direction, the root of the obtained strip-shaped bone can be cut off through the second cutting edge, that is, the connection between the strip-shaped bone in the cutter and the surrounding bone tissue is cut off, and the root cutting operation can be conveniently carried out when the strip-shaped bone is taken.
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