CA2051500A1 - Safety trocar - Google Patents

Safety trocar

Info

Publication number
CA2051500A1
CA2051500A1 CA2051500A CA2051500A CA2051500A1 CA 2051500 A1 CA2051500 A1 CA 2051500A1 CA 2051500 A CA2051500 A CA 2051500A CA 2051500 A CA2051500 A CA 2051500A CA 2051500 A1 CA2051500 A1 CA 2051500A1
Authority
CA
Canada
Prior art keywords
cutting tip
trocar
maintained
safety trocar
cannula
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
CA2051500A
Other languages
French (fr)
Other versions
CA2051500C (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
United States Surgical Corp
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 United States Surgical Corp filed Critical United States Surgical Corp
Publication of CA2051500A1 publication Critical patent/CA2051500A1/en
Application granted granted Critical
Publication of CA2051500C publication Critical patent/CA2051500C/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
    • A61B17/3494—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
    • 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 cutting tip is withdrawn into the cannula in response to counterforce being removed from the cutting tip, e.g., by the tip entering a body cavity. The cutting tip is maintained in the exposed positioned by a mechanism associated with the obturator shaft, and is automatically withdrawn into the cannula under the force of a spring when the first mechanism is released by a second mechanism associated with the obturator. Penetration force is maintained at a minimum and safe and efficacious trocar entry is facilitated.
CA002051500A 1990-10-05 1991-09-16 Safety trocar Expired - Lifetime CA2051500C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07593676 US5116353B1 (en) 1990-10-05 1990-10-05 Safety trocar
US07/593,676 1990-10-05

Publications (2)

Publication Number Publication Date
CA2051500A1 true CA2051500A1 (en) 1992-04-06
CA2051500C CA2051500C (en) 1998-09-15

Family

ID=24375684

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002051500A Expired - Lifetime CA2051500C (en) 1990-10-05 1991-09-16 Safety trocar

Country Status (3)

Country Link
US (1) US5116353B1 (en)
AU (1) AU664942B2 (en)
CA (1) CA2051500C (en)

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US5603719A (en) * 1991-11-27 1997-02-18 Yoon; Inbae Retractable safety trocar with multiple triggering and/or moving components
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US5573511A (en) * 1991-11-27 1996-11-12 Yoon; Inbae Retractable safety penetrating instrument with safety probe
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Also Published As

Publication number Publication date
AU664942B2 (en) 1995-12-07
AU5631994A (en) 1994-04-28
US5116353A (en) 1992-05-26
CA2051500C (en) 1998-09-15
US5116353B1 (en) 1996-09-10

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