CA2158646A1 - Trocar - Google Patents

Trocar

Info

Publication number
CA2158646A1
CA2158646A1 CA002158646A CA2158646A CA2158646A1 CA 2158646 A1 CA2158646 A1 CA 2158646A1 CA 002158646 A CA002158646 A CA 002158646A CA 2158646 A CA2158646 A CA 2158646A CA 2158646 A1 CA2158646 A1 CA 2158646A1
Authority
CA
Canada
Prior art keywords
obturator
cannula
wall
body cavity
trocar
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
CA002158646A
Other languages
French (fr)
Other versions
CA2158646C (en
Inventor
John J. Allen
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.)
Covidien AG
Original Assignee
John J. Allen
Minnesota Mining And Manufacturing Company
Origin Medsystems, Inc.
Sherwood Services Ag
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 John J. Allen, Minnesota Mining And Manufacturing Company, Origin Medsystems, Inc., Sherwood Services Ag filed Critical John J. Allen
Publication of CA2158646A1 publication Critical patent/CA2158646A1/en
Application granted granted Critical
Publication of CA2158646C publication Critical patent/CA2158646C/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Pathology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

A trocar (10) for placement in the lumen (24) of a cannula to facilitate insertion of the cannula (20) through the wall of a body cavity is described. The trocar (10) comprises a handle (28), an obturator (30) having a proximal portion (31) and a distal portion with a cutting surface (35) for piercing the wall of the body cavity, and an axis (A). The proximal and distal portions of the obturator (30) are mounted for relative rotational movement about the axis (A) of the obturator (30). A
mechanism retracts the obturator (30) proximally relative to the cannula (20) along an axial path as the proximal (31) and distal portions rotate relative to each other after the cutting surface (35) has at least partially penetrated through the wall of the body cavity. Preferably, the path is free of distal movement of the obturator (30) relative to the cannula (20).
CA002158646A 1993-04-14 1994-02-25 Trocar Expired - Lifetime CA2158646C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/048,274 US5346459A (en) 1993-04-14 1993-04-14 Trocar
US08/048274 1993-04-14
PCT/US1994/001836 WO1994023656A1 (en) 1993-04-14 1994-02-25 Trocar

Publications (2)

Publication Number Publication Date
CA2158646A1 true CA2158646A1 (en) 1994-10-27
CA2158646C CA2158646C (en) 2005-05-03

Family

ID=21953650

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002158646A Expired - Lifetime CA2158646C (en) 1993-04-14 1994-02-25 Trocar

Country Status (7)

Country Link
US (2) US5346459A (en)
EP (1) EP0697838B1 (en)
JP (1) JP3757246B2 (en)
CA (1) CA2158646C (en)
DE (1) DE69413683T2 (en)
ES (1) ES2124882T3 (en)
WO (1) WO1994023656A1 (en)

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Also Published As

Publication number Publication date
EP0697838A1 (en) 1996-02-28
DE69413683T2 (en) 1999-02-25
DE69413683D1 (en) 1998-11-05
US5851216A (en) 1998-12-22
JP3757246B2 (en) 2006-03-22
ES2124882T3 (en) 1999-02-16
CA2158646C (en) 2005-05-03
US5346459A (en) 1994-09-13
JPH08508906A (en) 1996-09-24
WO1994023656A1 (en) 1994-10-27
EP0697838B1 (en) 1998-09-30

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