CA2355373A1 - Retrieval device made of precursor alloy cable - Google Patents

Retrieval device made of precursor alloy cable Download PDF

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Publication number
CA2355373A1
CA2355373A1 CA002355373A CA2355373A CA2355373A1 CA 2355373 A1 CA2355373 A1 CA 2355373A1 CA 002355373 A CA002355373 A CA 002355373A CA 2355373 A CA2355373 A CA 2355373A CA 2355373 A1 CA2355373 A1 CA 2355373A1
Authority
CA
Canada
Prior art keywords
precursor alloy
precursor
retrieval device
constructing
foreign objects
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
CA002355373A
Other languages
French (fr)
Other versions
CA2355373C (en
Inventor
Gary B. Mcalister
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.)
Boston Scientific Ltd Barbados
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 CA2355373A1 publication Critical patent/CA2355373A1/en
Application granted granted Critical
Publication of CA2355373C publication Critical patent/CA2355373C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00867—Material properties shape memory effect
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop

Abstract

A medical retrieval device for retrieving foreign objects from a patient and the method of constructing the device are disclosed. The device incorporates a wire cable composed of a precursor alloy to a superelastic material to improve durability of the device. Because precursor alloys exhibit a linear stress-strain relationship and a yield point associated with a relatively high stress level, the device transfers greater stresses before experiencing deformation. Thus, greater crushing forces can be achieved using a device of this type.
These crushing forces may be needed when the foreign object is too large to remove intact. This property also facilitates the device in dilating ducts to retrieve foreign objects.
Using the precursor alloy additionally eliminates the need for heat treatment of the cables used in constructing the device. A retrieval device made of precursor alloy cable also is less susceptible to permanent deformation and unwinding during use.
CA002355373A 1999-10-27 2000-10-26 Retrieval device made of precursor alloy cable Expired - Fee Related CA2355373C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/427,553 US6217589B1 (en) 1999-10-27 1999-10-27 Retrieval device made of precursor alloy cable and method of manufacturing
US09/427,553 1999-10-27
PCT/US2000/041560 WO2001034041A1 (en) 1999-10-27 2000-10-26 Retrieval device made of precursor alloy cable

Publications (2)

Publication Number Publication Date
CA2355373A1 true CA2355373A1 (en) 2001-05-17
CA2355373C CA2355373C (en) 2008-07-29

Family

ID=23695358

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002355373A Expired - Fee Related CA2355373C (en) 1999-10-27 2000-10-26 Retrieval device made of precursor alloy cable

Country Status (9)

Country Link
US (8) US6217589B1 (en)
EP (1) EP1150613B1 (en)
JP (2) JP2003513697A (en)
AU (1) AU778249B2 (en)
CA (1) CA2355373C (en)
DE (1) DE60040842D1 (en)
IL (1) IL143972A0 (en)
WO (1) WO2001034041A1 (en)
ZA (1) ZA200105295B (en)

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US20010034529A1 (en) 2001-10-25
US20020165557A1 (en) 2002-11-07

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