CA2067530A1 - Safety trocar - Google Patents

Safety trocar

Info

Publication number
CA2067530A1
CA2067530A1 CA002067530A CA2067530A CA2067530A1 CA 2067530 A1 CA2067530 A1 CA 2067530A1 CA 002067530 A CA002067530 A CA 002067530A CA 2067530 A CA2067530 A CA 2067530A CA 2067530 A1 CA2067530 A1 CA 2067530A1
Authority
CA
Canada
Prior art keywords
cannula
force
maintained
trocar
latching mechanism
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
CA002067530A
Other languages
French (fr)
Other versions
CA2067530C (en
Inventor
David T. Green
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 CA2067530A1 publication Critical patent/CA2067530A1/en
Application granted granted Critical
Publication of CA2067530C publication Critical patent/CA2067530C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3476—Powered trocars, e.g. electrosurgical cutting, lasers, powered knives
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
    • A61B17/3496—Protecting sleeves or inner probes; Retractable tips
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00535—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated
    • A61B2017/00544—Surgical instruments, devices or methods, e.g. tourniquets pneumatically or hydraulically operated pneumatically
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0801—Prevention of accidental cutting or pricking
    • A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs

Abstract

A safety trocar is provided in which the cannula is reciprocally mounted to the cannula housing and reciprocates into the cannula housing when a proximally directed force is applied thereto. The piercing tip is maintained in the exposed position by a latching mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the proximal force is removed from the cannula, the cannula thus advancing distally and releasing the latching mechanism.
Penetration force is maintained at a minimum, and safe and efficacious trocar entry is facilitated.
CA002067530A 1991-04-30 1992-04-29 Safety trocar Expired - Lifetime CA2067530C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/693,582 US5295993A (en) 1991-04-30 1991-04-30 Safety trocar
US07/693,582 1991-04-30

Publications (2)

Publication Number Publication Date
CA2067530A1 true CA2067530A1 (en) 1992-10-31
CA2067530C CA2067530C (en) 2002-11-26

Family

ID=24785255

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002067530A Expired - Lifetime CA2067530C (en) 1991-04-30 1992-04-29 Safety trocar

Country Status (4)

Country Link
US (4) US5295993A (en)
EP (1) EP0511676B1 (en)
CA (1) CA2067530C (en)
DE (1) DE69212210T2 (en)

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US7169159B2 (en) 2007-01-30
EP0511676A3 (en) 1993-01-13
US6497716B1 (en) 2002-12-24
EP0511676A2 (en) 1992-11-04
CA2067530C (en) 2002-11-26
DE69212210D1 (en) 1996-08-22
EP0511676B1 (en) 1996-07-17
DE69212210T2 (en) 1997-01-02
US5295993A (en) 1994-03-22
US20030135229A1 (en) 2003-07-17
US5486190A (en) 1996-01-23

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