Title:
PRODUCTION OF SURGICAL NEEDLE
Document Type and Number:
Japanese Patent JP2679004
Kind Code:
B
Abstract:
PURPOSE: To essentially eliminate manual handling and to enable efficient production not requiring polishing by continuous feeding respective semi-finished needles into coining dies having cavities and casting the respective semi-finished needles in the respective coining dies.
CONSTITUTION: Needle blanks or wire blanks are cut from one roll of wire 6 and are placed on a carrier strip 21. This carrier strip 21 and the needle 6 are passed and moved through a series of the coining dies and at least one trimming die. The first coining die is an open coining die and ≥1 piece of the continuous coining dies are closed coining dies. These semi-finished needles or wire members are arbitrarily curved and are heat treated and are then electrochemically treated, as a result of which the needles or wire members having cutting edges are generated without the exertion of an adverse influence on point ductility.
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Inventors:
Mcjames, William
Willis, Bernard M.
Smith, Daniel
Reynolds, Eugene
Gucker, Carl
Nordmeyer, Michael
Willis, Bernard M.
Smith, Daniel
Reynolds, Eugene
Gucker, Carl
Nordmeyer, Michael
Application Number:
JP1994000292060
Publication Date:
August 01, 1997
Filing Date:
November 01, 1994
Export Citation:
Assignee:
ETHICON INC
International Classes:
A61B17/06; B21F45/12; B21G1/00; B21G1/02; B21G3/16; B21J5/02; (IPC1-7): B21G1/02; A61B17/06; B21F45/12; B21J5/02
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