Medical planing grinding head

Abstract

The invention provides a medical planing grinding head. The medical planing grinding head comprises a planing tool inner knife, a planing tool outer knife and a plug; the planing tool outer knife is provided with an assembly end and an outer knife tube, a center channel runs through the assembly end and the outer knife tube, the planing tool inner knife detachably penetrates into the center channel, and the plug is detachably connected to the assembly end to form seal at the end of the center channel. Compared with the prior art, the plug designed for the planing tool head can replace the inner knife to plug the outer knife tube when the inner knife is replaced in an operation, it is ensured that lavage fluid will not overflow from the outer knife tube, through small air-discharging holesdesigned in the plug, air in an operation region can be discharged, and it is avoided that since a lot of air bubbles are mixed into the lavage fluid, the visual field resolution of the operation region is decreased; with the open structure of the head of the outer knife, all-directional grinding is realized, and operation efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of medical instruments, in particular to a medical planer grinding head. Background technique [0002] At present, it is still one of the main methods to treat osteoarthritis by using a planer to remove the osteophytes located at the edge of the cartilage and colliding with the articular surface in the arthroscopic surgery. The key steps of arthroscopic joint debridement are to first make a small incision at the diseased joint, and establish a channel for surgical instruments to enter, and then use a planer to resect the diseased part of the joint through this channel. Lesions in different positions can be treated with different cutter heads. [0003] Limited by the current technology, when performing arthroscopic joint debridement surgery, a certain pressure of lavage fluid must be continuously injected into the surgical area to ensure the surgical field of view and also have a certain cooling effect. Ther...

AI Technical Summary

Problems solved by technology

[0003] Limited by the current technology, when performing arthroscopic joint debridement surgery, a certain pressure of lavage fluid must be continuously injected into the surgical area to ensure the surgical field of view and also have a certain cooling effect. Therefore, different inner knives are used when replacing It is easy to cause the lavage fluid to overflow from the outer knife tube, which will lead to unstable field of view in the operation area and reduce the operation efficiency

[0004] The existing outer knife heads all adopt a semi-closed structure design, which leads to only one-sided grinding and resection of soft tissue during surgery

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