CA2156517A1 - Surgical extractor - Google Patents

Surgical extractor

Info

Publication number
CA2156517A1
CA2156517A1 CA002156517A CA2156517A CA2156517A1 CA 2156517 A1 CA2156517 A1 CA 2156517A1 CA 002156517 A CA002156517 A CA 002156517A CA 2156517 A CA2156517 A CA 2156517A CA 2156517 A1 CA2156517 A1 CA 2156517A1
Authority
CA
Canada
Prior art keywords
extractor
wires
pair
calculi
turn
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
CA002156517A
Other languages
French (fr)
Other versions
CA2156517C (en
Inventor
James S. Bates
Hugh A. Tripp
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 Corp
Original Assignee
James S. Bates
Hugh A. Tripp
Boston Scientific Corporation
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 James S. Bates, Hugh A. Tripp, Boston Scientific Corporation filed Critical James S. Bates
Publication of CA2156517A1 publication Critical patent/CA2156517A1/en
Application granted granted Critical
Publication of CA2156517C publication Critical patent/CA2156517C/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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
    • A61F2210/0019—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation

Abstract

A surgical extractor (10) for removing calculi, such as kidney stones and gall stones, from the body. The extractor includes a handle (11) at a proximal end (12) of the extractor with a slider (14) for operation by a physician. At the distal end (16) the extractor includes a plurality of pairs of wires (15) with portions of each pair being formed along the turn of a helix. When a retaining sheath (17) is retracted, the wires, formed of a shape memory material such as stainless steel, expand such that each pair of wires closely assumes a path along a helical turn with individual wires remaining closely adjacent. This use of plural wires for each strand multiples the number of contacts with entrapped calculi and can be provided without any deleterious effect on the reliability or size of the extractor.
CA002156517A 1993-02-19 1994-02-15 Surgical extractor Expired - Fee Related CA2156517C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1955193A 1993-02-19 1993-02-19
US08/019,551 1993-02-19
PCT/US1994/001885 WO1994018888A1 (en) 1993-02-19 1994-02-15 Surgical extractor

Publications (2)

Publication Number Publication Date
CA2156517A1 true CA2156517A1 (en) 1994-09-01
CA2156517C CA2156517C (en) 2001-08-28

Family

ID=21793815

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002156517A Expired - Fee Related CA2156517C (en) 1993-02-19 1994-02-15 Surgical extractor

Country Status (6)

Country Link
US (1) US5496330A (en)
EP (1) EP0684787B1 (en)
JP (1) JP3411921B2 (en)
CA (1) CA2156517C (en)
DE (1) DE69433774T2 (en)
WO (1) WO1994018888A1 (en)

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US5496330A (en) 1996-03-05
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