一种能适用不同椎弓根钉螺纹的上钉器及其螺纹设计方法
By designing a right-angled trapezoidal external thread structure that is compatible with the internal threads of various pedicle screws, the problem of poor compatibility of the screw holder is solved, enabling multiple uses of one device, simplifying surgical procedures, and improving surgical efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ZHEJIANG CANWELL MEDICAL DEVICES CO LTD
- Filing Date
- 2026-04-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing screw fixation devices have poor compatibility in spinal internal fixation surgery, requiring frequent replacement of screw fixation devices or conversion heads of different specifications, which prolongs the operation time, increases the risk of anesthesia, and poses safety hazards such as screw misplacement, stripping, and detachment.
Design a multi-objective compatible external thread structure that can adapt to negative angle internal threads, hook-lock internal threads and compound internal threads. Through reverse fitting and structural optimization, an external thread with a right-angled trapezoidal axial cross section is formed, realizing multiple uses of one instrument and simplifying surgical operations.
Simplify surgical procedures, shorten surgical time, reduce surgical risks, improve surgical efficiency and safety, and reduce the number of instruments in stock and maintenance costs.
Smart Images
Figure CN122056676B_ABST