CA2111885A1 - Improved safety trocar - Google Patents

Improved safety trocar

Info

Publication number
CA2111885A1
CA2111885A1 CA002111885A CA2111885A CA2111885A1 CA 2111885 A1 CA2111885 A1 CA 2111885A1 CA 002111885 A CA002111885 A CA 002111885A CA 2111885 A CA2111885 A CA 2111885A CA 2111885 A1 CA2111885 A1 CA 2111885A1
Authority
CA
Canada
Prior art keywords
obturator
safety trocar
improved safety
shield
cutting tip
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
CA002111885A
Other languages
French (fr)
Other versions
CA2111885C (en
Inventor
Randy R. Stephens
Gregory D. Bishop
James W. Voegele
Diane Welling
Richard Smith
John M. Collins
George Selecman
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.)
Ethicon Inc
Original Assignee
Randy R. Stephens
Gregory D. Bishop
James W. Voegele
Diane Welling
Richard Smith
John M. Collins
George Selecman
Ethicon, 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 Randy R. Stephens, Gregory D. Bishop, James W. Voegele, Diane Welling, Richard Smith, John M. Collins, George Selecman, Ethicon, Inc. filed Critical Randy R. Stephens
Publication of CA2111885A1 publication Critical patent/CA2111885A1/en
Application granted granted Critical
Publication of CA2111885C publication Critical patent/CA2111885C/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
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating

Abstract

A safety trocar is provided which includes a spring-loaded shield that shields the cutting tip of the obturator after the obturator penetrates tissue. The distal end of the shield is conical in profile and contains a slot which conforms to the geometry of the cutting tip. The obturator tip contains a knife edge blade which extends the length of the cannula inner diameter. Ideally, the knife is made of an amorphous metal, and may be serrated at its edge.
CA002111885A 1992-12-22 1993-12-20 Improved safety trocar Expired - Lifetime CA2111885C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/994,817 US5314417A (en) 1992-12-22 1992-12-22 Safety trocar
US07/994,817 1992-12-22

Publications (2)

Publication Number Publication Date
CA2111885A1 true CA2111885A1 (en) 1994-06-23
CA2111885C CA2111885C (en) 2004-10-26

Family

ID=25541092

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002111885A Expired - Lifetime CA2111885C (en) 1992-12-22 1993-12-20 Improved safety trocar

Country Status (10)

Country Link
US (1) US5314417A (en)
EP (1) EP0604197B1 (en)
JP (1) JPH0747076A (en)
AT (1) ATE189768T1 (en)
AU (1) AU667411B2 (en)
CA (1) CA2111885C (en)
DE (1) DE69327869T2 (en)
ES (1) ES2141754T3 (en)
GR (1) GR1002618B (en)
PT (1) PT604197E (en)

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CA2111885C (en) 2004-10-26
DE69327869D1 (en) 2000-03-23
PT604197E (en) 2000-05-31
EP0604197B1 (en) 2000-02-16
US5314417A (en) 1994-05-24
AU5266393A (en) 1994-07-07
GR1002618B (en) 1997-02-21
ES2141754T3 (en) 2000-04-01
EP0604197A2 (en) 1994-06-29
ATE189768T1 (en) 2000-03-15
DE69327869T2 (en) 2000-11-02
EP0604197A3 (en) 1995-01-25
GR930100516A (en) 1994-08-31
AU667411B2 (en) 1996-03-21
JPH0747076A (en) 1995-02-21

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