Manufacturing process for scalpels

Abstract

The invention discloses a method for manufacturing a minimally invasive surgical knife. The method is on the basis of a circular slotting knife, a compressing mechanism, an ejector rod and the minimally invasive surgical knife; a plurality of first line through slots and a plurality of second line through slots are axially formed in parallel in the circular slotting knife; the first line through slots extend from one end surface of the circular slotting knife to the middle part to form a plurality of first elastic blades; the second line through slots extend from the other end surface of the circular slotting knife to the middle part to form a plurality of second elastic blades. The method comprises the following steps: 1, clamping the circular slotting knife with the compressing mechanism to form a reshaped circular slotting knife; 2, positioning the reshaped circular slotting knife obtained in step 1 into a through hole in an outer aluminum tube casing; 3, positioning the ejector rod into the through hole in the outer aluminum tube casing, and then pushing the ejector rod to drive the reshaped circular slotting knife to move. With the adoption of the manufacture method, small silent points can be cleanly and smoothly removed; the circular slotting knife can be kept in contact with the inner wall of an aluminum pipe without any damage to the inner wall because of a certain elasticity, and the small salient points on the inner wall can be removed to the maximum.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a manufacturing process for a scalpel. Background technique [0002] In the prior art, the blade of the ordinary scalpel is wide and causes great damage to normal tissues, so it is not suitable for minimally invasive surgery. Minimally invasive surgery is welcomed by patients because of less trauma, less pain and faster recovery. However, due to the limitations of equipment and conditions, surgery has high requirements for doctors. [0003] After long-term processing, it was found that the defect rate of the outer aluminum tube sleeve of the minimally invasive scalpel has remained high, and most of the processed parts cannot meet the precision requirements. The main reason is that the extrusion material is poorly fed, and small bumps of 0.05MM~0.1MM often appear on the inner wall of the aluminum agent material. However, this phenomenon cannot be improved in the aluminum agent...

AI Technical Summary

Problems solved by technology

[0004] The outer aluminum sleeve of this minimally invasive scalpel has a small inner wall diameter (5.86MM), and there is still a tolerance, and the inner wall has a special shape, and the special shape is very small (the width of the special shape is 0.7MM), and the ordinary method cannot make the inner wall small convex. point removal

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