EP0137685A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Tissue retention spool for intraluminal anastomotic surgical stapling instrument and methods
Assignee: Ethicon Inc
•
Filing: 1984-08-24
•
Granted: —
•
Expires: 2004-08-24
Abstract
Abstract A tissue retention spool is disposed on the anvil actuating rod of an intraluminal anastomotic surgical stapling instrument. Tubular tissue is gathered and held on the spool by a suture tie, thus eliminating the previously required purse-stringing procedure. The spool and rod are constructed to initially resist relative sliding motion as the spool is withdrawn into the staple carrier/cylindrical scalpel area prior to setting of staples and internal tissue excision. The combined spool and instrument serve to hold tubular tissue in an erect, closed condition, facilitating the use of closed surgical techniques, without purse-stringing, in lim- i ted access areas such as lower colon resections. Alternative spools and methods are included.
Inventors
- 👤 Robert G. Rothfuss
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 02:06
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/11; A61B17/115; A61B17/1155; A61B2017/1142
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
84 words
An intraluminal anastomotic surgical stapling instrument having a staple cartridge, a cylindrical scalpel within the cartridge, and a staple anvil mounted on a rod extending from the staple cartridge, the anvil being shiftable toward said staple cartridge for bringing ends of a transected tubular tissue structure together for stapling, characterised in that tissue retention means are mounted on the rod accessible between the staple cartridge and the anvil for holding an end of a tubular tissue structure prior to and during an anastomotic procedure.
Claim 2
Dependent Claim
84 words
An intraluminal anastomotic surgical stapling instrument having a staple cartridge, a cylindrical scalpel within the cartridge, and a staple anvil mounted on a rod extending from the staple cartridge, the anvil being shiftable toward said staple cartridge for bringing ends of a transected tubular tissue structure together for stapling, characterised in that tissue retention means are mounted on the rod accessible between the staple cartridge and the anvil for holding an end of a tubular tissue structure prior to and during an anastomotic procedure.
Claim 3
Dependent Claim
23 words
An instrument as claimed in Claim 1, wherein the tissue retention means is frictionally mounted on the rod and is yieldably slidable therealong.
Claim 4
Dependent Claim
25 words
An instrument as claimed in Claim 1 or 2 wherein the tissue retention means is movable to a position radially inwardly of the cylindrical scalpel.
Claim 5
Dependent Claim
21 words
4 . An instrument as claimed in any of the preceding claims, wherein the tissue retention means comprises a flanged spool.
Claim 6
Dependent Claim
27 words
An instrument as claimed in Claim 4, wherein the spool has a flange at each end and includes radially extending tissue engaging projections disposed between the flanges.
Claim 7
Dependent Claim
35 words
An instrument as claimed in either Claim 4 or 5, wherein the spool has an internal bore receiving the rod, and elongated, axially extending, raaially inwardly projecting projections frictionally engage the rod within the bore.
Claim 8
Dependent Claim
21 words
An instrument as claimed in Claim 6, wherein the ends of the axially extending projections are tapered away from the rod.
Claim 9
Dependent Claim
29 words
An instrument as claimed in either Claim 4 or 5 wherein the spool has an internal bore defined by a resilient surface for frictional, yieldable engagement with the rod.
Claim 10
Dependent Claim
50 words
A tissue retention spool for an intraluminal anastomotic surgical stapling instrument, characterised in that the spool has at least one flanged end extending radially outwardly of the spool, and a cylindrical tissue retention surface including a plurality of radial tissue engaging projection means for holding the tissue against sliding thereon.
Claim 11
Dependent Claim
50 words
A tissue retention spool for an intraluminal anastomotic surgical stapling instrument, characterised in that the spool has at least one flanged end extending radially outwardly of the spool, and a cylindrical tissue retention surface including a plurality of radial tissue engaging projection means for holding the tissue against sliding thereon.
Claim 12
Dependent Claim
31 words
A tissue retention spool as claimed in Claim 9, and having an internal bore for slidably receiving a rod of said instrument, said bore comprising means for yieldably gripping said rod.
Claim 13
Dependent Claim
27 words
A tissue retention spool as claimed in Claim 10, wherein said yieldable gripping means comprises a plurality of axially extending, inwardly projecting lugs for engaging said rod.
Claim 14
Dependent Claim
16 words
A tissue retention spool as claimea in Claim 11, wherein ends of said lugs are tapered.
Claim 15
Dependent Claim
23 words
A tissue retention spool as claimed in Claim 10, wherein said yieldable gripping means comprises a resilient material for frictionally gripping said rod.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.