CA2206765A1 - Shape memory alloy treatment - Google Patents

Shape memory alloy treatment

Info

Publication number
CA2206765A1
CA2206765A1 CA002206765A CA2206765A CA2206765A1 CA 2206765 A1 CA2206765 A1 CA 2206765A1 CA 002206765 A CA002206765 A CA 002206765A CA 2206765 A CA2206765 A CA 2206765A CA 2206765 A1 CA2206765 A1 CA 2206765A1
Authority
CA
Canada
Prior art keywords
component
shape memory
temperature
memory alloy
alloy treatment
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
CA002206765A
Other languages
French (fr)
Other versions
CA2206765C (en
Inventor
Alan Pelton
Thomas Duerig
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.)
Confluent Medical Technologies Inc
Original Assignee
Nitinol Devices and Components Inc
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 Nitinol Devices and Components Inc filed Critical Nitinol Devices and Components Inc
Publication of CA2206765A1 publication Critical patent/CA2206765A1/en
Application granted granted Critical
Publication of CA2206765C publication Critical patent/CA2206765C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/006Resulting in heat recoverable alloys with a memory effect
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
  • Materials For Medical Uses (AREA)

Abstract

A method of treating a component formed from a Ni-Ti based shape memory alloy, so that the component exhibits super-elasticity, comprises cold working the component, annealing the alloy while the component is restrained in the configuration resulting from the cold working step, and exposing the component to a temperature that is less than the solvus temperature of the alloy and greater than the temperature to which it is exposed in the annealing step to cause the A f temperature to be reduced.
CA002206765A 1996-06-13 1997-06-03 Shape memory alloy treatment Expired - Lifetime CA2206765C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/661,305 1996-06-13
US08/661,305 US5843244A (en) 1996-06-13 1996-06-13 Shape memory alloy treatment

Publications (2)

Publication Number Publication Date
CA2206765A1 true CA2206765A1 (en) 1997-12-13
CA2206765C CA2206765C (en) 2007-01-23

Family

ID=24653050

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002206765A Expired - Lifetime CA2206765C (en) 1996-06-13 1997-06-03 Shape memory alloy treatment

Country Status (5)

Country Link
US (1) US5843244A (en)
EP (1) EP0812928B1 (en)
JP (1) JP3949228B2 (en)
CA (1) CA2206765C (en)
DE (1) DE69700723T2 (en)

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Also Published As

Publication number Publication date
CA2206765C (en) 2007-01-23
US5843244A (en) 1998-12-01
JPH10147851A (en) 1998-06-02
DE69700723T2 (en) 2000-06-08
DE69700723D1 (en) 1999-12-09
JP3949228B2 (en) 2007-07-25
EP0812928A1 (en) 1997-12-17
EP0812928B1 (en) 1999-11-03

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