CA2131409A1 - Heat treated stainless steel needles and methods of making same - Google Patents

Heat treated stainless steel needles and methods of making same

Info

Publication number
CA2131409A1
CA2131409A1 CA002131409A CA2131409A CA2131409A1 CA 2131409 A1 CA2131409 A1 CA 2131409A1 CA 002131409 A CA002131409 A CA 002131409A CA 2131409 A CA2131409 A CA 2131409A CA 2131409 A1 CA2131409 A1 CA 2131409A1
Authority
CA
Canada
Prior art keywords
stainless steel
heat treated
methods
making same
steel needles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002131409A
Other languages
French (fr)
Other versions
CA2131409C (en
Inventor
Said Rizk
William O. Powers
W. Scott Samsel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United States Surgical Corp
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2131409A1 publication Critical patent/CA2131409A1/en
Application granted granted Critical
Publication of CA2131409C publication Critical patent/CA2131409C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21G—MAKING NEEDLES, PINS OR NAILS OF METAL
    • B21G1/00—Making needles used for performing operations
    • B21G1/08—Making needles used for performing operations of hollow needles or needles with hollow end, e.g. hypodermic needles, larding-needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/06—Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials
    • A61B17/06066—Needles, e.g. needle tip configurations
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/02—Hardening by precipitation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/26—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for needles; for teeth for card-clothing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum

Abstract

Surgical needles are produced from martensitic precipitation-hardening stainless steel and then vacuum heat treated and vacuum cooled to increase its tensile strength while retaining the polished surface of the needle. A needle made by this process is also disclosed.
CA002131409A 1993-10-05 1994-09-02 Heat treated stainless steel needles and methods of making same Expired - Fee Related CA2131409C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/132,008 US5411613A (en) 1993-10-05 1993-10-05 Method of making heat treated stainless steel needles
US08/132,008 1993-10-05

Publications (2)

Publication Number Publication Date
CA2131409A1 true CA2131409A1 (en) 1995-04-06
CA2131409C CA2131409C (en) 2005-11-15

Family

ID=22452010

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002131409A Expired - Fee Related CA2131409C (en) 1993-10-05 1994-09-02 Heat treated stainless steel needles and methods of making same

Country Status (4)

Country Link
US (2) US5411613A (en)
EP (1) EP0646653B1 (en)
CA (1) CA2131409C (en)
DE (1) DE69421662T2 (en)

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Also Published As

Publication number Publication date
EP0646653B1 (en) 1999-11-17
DE69421662T2 (en) 2000-04-27
DE69421662D1 (en) 1999-12-23
EP0646653A1 (en) 1995-04-05
CA2131409C (en) 2005-11-15
US5533982A (en) 1996-07-09
US5411613A (en) 1995-05-02

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