A surgical instrument for modifying the curved surface of bone

Abstract

The invention provides a surgical instrument for trimming the arc-shaped surface of bones, which includes a cutter head and a handle; the cutter head includes: an arc-shaped blade (1), a sawtooth structure (2), a plurality of springs (3), and the tail of the cutter head is embedded The upper part of the T-shaped connection (4), the lower part of the embedded T-shaped connection (5) at the end of the cutter head; the handle includes: the handle body (8), the front end of the handle (6), the gripping part of the thumb (7), four Refers to the grasping part (9); wherein, the T-shaped structure connection upper part (4) of the cutter head tail and the embedded T-shaped connection lower part (5) of the cutter head tail are used to be embedded in the T-shaped slot hole of the front end (6) of the handle, In order to achieve convenient and quick installation and / or disassembly, the thumb grip part (7) and four-finger grip part (9) are designed according to the ergonomics principle of the operator holding the knife, so as to prevent the knife handle from moving away from the operator during the operation. Hand off and / or avoid operator hand discomfort during prolonged use.

Description

technical field [0001] The invention relates to a surgical instrument suitable for repairing the surface of a bone into an arc-shaped structure during operation. Background technique [0002] At present, domestic and foreign orthopedics and orthopedic trauma departments all need to carry out detailed trimming on the surface of bone structure to adapt to the attachment of tendons, muscles and soft tissues. Especially in orthopedic surgery, it is necessary to modify the curved bone surface, and the implant and the bone surface need to have a good match when the 3D printed personalized bone plate is implanted, so the bone structure needs to be modified accordingly. In medical instruments, the blades of most knives are planar, such as J12090 10#, J12100 11#, etc., the blades of scalpels are all planar. Still flat. For the need to modify the bone structure into a curved surface, the precision of the planar blade is poor when removing the cortical bone and cancellous bone, resul...

AI Technical Summary

Problems solved by technology

For those who need to modify the bone structure into an arc-shaped surface, the precision of the planar blade is very poor when removing the cortical bone and spongy bone, resulting in excessive resection of the bone body, which will prolong the recovery time of patients after surgery

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