Surgical needle and method of manufacturing a surgical needle
In order to develop a surgical needle comprising an elongate needle body and a needle point formed on a distal end of the needle body, wherein the needle body is manufactured in particular from an elongate cylindrical blank, in a way that improves the handling ability of the surgical needle, it is proposed that the needle body has at least one textured-profile lateral face, which comprises at least one textured-profile lateral-face region provided with a textured profile, wherein the textured profile comprises a plurality of indentations and wherein the at least one textured-profile lateral-face region extends as far as the needle point. An improved method of manufacturing a surgical needle is also provided.
1. Method of manufacturing a surgical needle, comprising:
manufacturing an elongate needle body from an elongate cylindrical blank,
providing the needle body with at least one textured-profile lateral face,
forming at least one textured-profile lateral face region of the at least one textured-profile lateral-face by embossing a textured profile on at least a portion of the at least one textured profile lateral face, the embossed textured profile comprising a plurality of well-defined, reproducible indentations, and
forming a needle point at a distal end of the needle body, the at least one textured-profile lateral-face region extending as far as the needle point,
wherein:
the embossing of the textured profile occurs during a stamping process performed on the needle body; and
the needle point is formed by electrochemical polishing of the distal end of the stamped needle body.
2. Method according to claim 1 , wherein the at least one textured-profile lateral-face region is designed in such a way that it forms at least half of the at least one textured-profile lateral face.
3. Method according to claim 1 , wherein the needle body is provided with two textured-profile lateral faces such that the two textured-profile lateral faces face in opposite directions away from one another.
4. Method according to claim 1 , wherein the needle body is designed in such a way that in cross section it has a rectangular or square or substantially rectangular or square shape.
5. Method according to claim 1 , wherein the needle body is designed in such a way that it has four flat or substantially flat lateral faces and that at least one of the lateral faces is a textured-profile lateral face.
6. Method according to claim 1 , wherein the needle body is designed in such a way that it has at least one non-profiled lateral face adjoining the at least one textured-profile lateral face.
7. Method according to claim 6 , wherein the at least one non-profiled lateral face is designed with a convex curvature in a direction away from the needle body.
8. Method according to claim 6 , wherein two non-profiled or substantially non-profiled lateral faces are formed.
9. Method according to claim 8 , wherein the two non-profiled or substantially non-profiled lateral faces are designed facing in opposite directions away from one another.
10. Method according to claim 6 , wherein the needle body is designed in such a way that it has two textured-profile lateral faces and two non-profiled or substantially non-profiled lateral faces, which connect the textured-profile lateral faces to one another.
11. Method according to claim 1 , wherein the needle body after the formation of the at least one textured-profile lateral-face region is bent.
12. Method according to claim 1 , wherein the at least one textured-profile lateral face defines an outer surface and that the plurality of indentations are formed from the outer surface into the needle body.
13. Method according to claim 12 , wherein a depth of the indentations relative to the outer surface of the at least one textured-profile lateral face is designed to decrease from a proximal end of the at least one textured-profile lateral-face region in the direction of the needle point.
14. Method according to claim 1 , wherein the plurality of indentations are entirely or partially of a pyramidal design.
15. Method according to claim 14 , wherein the plurality of indentations are designed entirely or partially in the form of square pyramids.
16. Method according to claim 1 , wherein the elongate cylindrical blank is manufactured by injection moulding.
17. Method according to claim 16 , wherein the elongate cylindrical blank is manufactured by metal injection moulding (MIM), powder injection moulding (PIM) or by plastic injection moulding.
18. Method according to claim 1 , wherein the needle is manufactured from a metal, from plastics material or in the form of a ceramic product by sintering.
19. Method according to claim 1 , wherein the needle at a proximal end is provided with at least one eye, blind hole or notch.
20. Method according to claim 19 , wherein the eye is designed in the form of a through opening in the needle body that is circular, oval or elongate-hole-like in cross section.
21. Method according to claim 1 , wherein the needle point and/or the entire needle body is entirely or partially coated with a silicone layer.