CA2375014A1 - Self disengaging anti-backup mechanism for specimen retrieval bag deployment - Google Patents

Self disengaging anti-backup mechanism for specimen retrieval bag deployment Download PDF

Info

Publication number
CA2375014A1
CA2375014A1 CA002375014A CA2375014A CA2375014A1 CA 2375014 A1 CA2375014 A1 CA 2375014A1 CA 002375014 A CA002375014 A CA 002375014A CA 2375014 A CA2375014 A CA 2375014A CA 2375014 A1 CA2375014 A1 CA 2375014A1
Authority
CA
Canada
Prior art keywords
rod
surgical instrument
pouch
tube
support tube
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
CA002375014A
Other languages
French (fr)
Other versions
CA2375014C (en
Inventor
Sean P. Conlon
Thomas A. Gilker
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 Endo Surgery Inc
Original Assignee
Ethicon Endo Surgery 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 Ethicon Endo Surgery Inc filed Critical Ethicon Endo Surgery Inc
Publication of CA2375014A1 publication Critical patent/CA2375014A1/en
Application granted granted Critical
Publication of CA2375014C publication Critical patent/CA2375014C/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
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00287—Bags for minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/2812—Surgical forceps with a single pivotal connection
    • A61B17/2833—Locking means
    • A61B2017/2837—Locking means with a locking ratchet
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2946—Locking means

Abstract

A surgical instrument for retrieving tissue from a patient. The instrument includes an elongated support tube having a proximal end and a distal end, and an elongated inner rod slidably and coaxially disposed within the support tube. The rod has a removable pouch attached thereto, wherein the pouch is initially disposed within the support tube, and wherein distal movement of the rod ejects the pouch from the tube. The instrument further includes a mechanism engaging the rod such that after the rod has initially been moved distally, the mechanism prevents proximal motion of the rod. The mechanism disengaging upon total ejection of the bag from the tube, and thereafter allows proximal and distal movement of the rod.

Claims (10)

1. A surgical instrument for retrieving tissue from a patient, the surgical instrument comprising:
a. an elongated support tube having a proximal end and a distal end;
b. an elongated inner rod slidably and coaxially disposed within said support tube, said rod having a removable pouch attached thereto.
wherein said pouch is initially disposed within said support tube, and wherein distal movement of said rod ejects said pouch from said tube;
and c. a mechanism engaging said rod such that after said rod has initially been moved distally, such mechanism prevents proximal motion of said rod.
said mechanism disengaging upon total ejection of said bag from said tube, and thereafter allowing proximal and distal movement of said rod.
2. The surgical instrument of claim 1 wherein said motion limiting mechanism is a one way ratchet.
3. The surgical instrument of claim 2 wherein said one way ratchet includes a longitudinal row of pockets disposed along said rod and at least one arm biased against said female features.
4. The surgical instrument of claim 3 wherein said arm is biased against said pockets by a spring.
5. The surgical instrument of claim 1 wherein said locking mechanism is a hook.
6. A surgical instrument for retrieving tissue from a patient, the surgical instrument comprising:
a. an elongated support tube having a proximal end attached to a handle and a distal end extending therefrom;
b. an elongated inner rod slidably and coaxially disposed within said support tube, said rod having a removable pouch attached thereto, wherein said pouch is initially disposed within said support tube, and wherein distal movement of said rod ejects said pouch from said tube;
and c. a mechanism engaging said rod such that after said rod has initially been moved distally, such mechanism prevents proximal motion of said rod, said mechanism disengaging upon total ejection of said bag from said tube, and thereafter allowing proximal and distal movement of said rod, said mechanism engaging said rod remaining substantially stationary with respect to said handle.
7. The surgical instrument of claim 6 wherein said motion limiting mechanism is a one way ratchet.
8. The surgical instrument of claim 7 wherein said one way ratchet includes a longitudinal row of pockets disposed along said rod and at least one arm biased against said female features.
9. The surgical instrument of claim 8 wherein said arm is biased against said pockets by a spring.
10. The surgical instrument of claim 6 wherein said locking mechanism is a hook.
CA2375014A 2001-06-29 2002-03-08 Self disengaging anti-backup mechanism for specimen retrieval bag deployment Expired - Lifetime CA2375014C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/896,051 2001-06-29
US09/896,051 US6383197B1 (en) 2001-06-29 2001-06-29 Self disengaging anti-backup mechanism for specimen retrieval bag deployment

Publications (2)

Publication Number Publication Date
CA2375014A1 true CA2375014A1 (en) 2002-12-29
CA2375014C CA2375014C (en) 2011-08-30

Family

ID=25405542

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2375014A Expired - Lifetime CA2375014C (en) 2001-06-29 2002-03-08 Self disengaging anti-backup mechanism for specimen retrieval bag deployment

Country Status (9)

Country Link
US (1) US6383197B1 (en)
EP (1) EP1269920B1 (en)
JP (1) JP4275350B2 (en)
CN (1) CN1223313C (en)
AU (1) AU784346B2 (en)
CA (1) CA2375014C (en)
DE (1) DE60217227T2 (en)
ES (1) ES2278873T3 (en)
MX (1) MXPA02002877A (en)

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Also Published As

Publication number Publication date
US6383197B1 (en) 2002-05-07
ES2278873T3 (en) 2007-08-16
JP4275350B2 (en) 2009-06-10
DE60217227D1 (en) 2007-02-15
AU2450302A (en) 2003-01-02
CA2375014C (en) 2011-08-30
DE60217227T2 (en) 2007-11-08
EP1269920B1 (en) 2007-01-03
CN1223313C (en) 2005-10-19
EP1269920A1 (en) 2003-01-02
MXPA02002877A (en) 2004-11-12
JP2003047616A (en) 2003-02-18
CN1393206A (en) 2003-01-29
AU784346B2 (en) 2006-03-16

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