Method of making a needled suture

Details Method of making a needled suture Method of making a needled suture

1976-12-16

1977-12-06

Moon, Charlie T.

Metal working

Method of mechanical manufacture

With testing or indicating

29517, B21D 3900, B23P 1100

Patent

active

040608859

ABSTRACT:
Surgical needles are attached to sutures with controlled pull-out characteristics by a short crimp--that is a crimp whose length is markedly less than the length of the end of the suture in the needle; with an essentially undistorted portion of the needle adjacent to where the suture emerges from the needle, and an essentially undistorted portion around the front of the suture, so that only a short section of the needle is crimped around the suture. This leaves the suture uncrushed where it emerges from the needle and hence of superior strength where sharp bends occur during use. It also leaves an undistorted portion of the suture ahead of the crimp so that on pull-out, the suture is retained not only by frictional engagement of the crimp but also by the forces required for the distortion of the head of the suture so that it will pull through the reduced section of the crimp.

REFERENCES:
patent: 2359084 (1944-09-01), Carlson
patent: 2411079 (1946-11-01), Baule
patent: 2620028 (1952-12-01), Kohut
patent: 2728343 (1955-12-01), Everett
patent: 2802257 (1957-08-01), Holtzapple
patent: 3038475 (1962-06-01), Orcutt
patent: 3311110 (1967-03-01), Singerman et al.
patent: 3910282 (1975-10-01), Messer et al.
patent: 3926194 (1975-12-01), Greenberg et al.
patent: 3943933 (1976-03-01), Gertzman
patent: 3981307 (1976-09-01), Borysko

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