US5144961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscopic ligating device
Assignee: Ethicon Inc
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Filing: 1991-07-11
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Granted: 1992-09-08
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Expires: 2011-07-11
Abstract
Abstract Endoscopic ligating device having a surgical needle; a tube; and a filamentary strand attached at its distal end to the surgical needle, and slidably engaged at its proximal end about the tube with a partially tightened knot.
Inventors
- 👤 Chao Chen
- 👤 Ralph Spengler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:57
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/0469; A61B17/12; A61B17/12009; A61B17/12013; A61B2017/0474; A61B2017/0477; A61B90/00; A61B90/03; A61B2090/037
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
201 words
A method of ligating a vessel endoscopically, comprising the steps of: a) providing an endoscopic ligating device, said device having a surgical needle, a tube, and a filamentary strand attached at its distal end to the surgical needle, and slideably engaged at its proximal end about said tube with a partially tightened knot; b) passing said surgical needle down through a trocar into a body cavity wherein the desired ligation is to occur; c) looping said needle around said vessel; d) passing said surgical needle up through said trocar until said needle exits said trocar; e) removing said needle from said filimentary strand; f) inserting said strand into the distal end of said tube and passing said strand up through said tube until a portion of said strand protrudes from the proximal end of said tube; g) sliding said partially tightened knot distally on the tube until said partially tightened knot disengages from said tube and is engaged about said filamentary strand; h) tightening said partially tightened knot about said strand so as to form a fully tightened knot; and i) sliding said fully tightened knot distally on said strand until said fully tightened knot firmly engages and ligates said vessel.
Claim 2
Independent Claim
201 words
A method of ligating a vessel endoscopically, comprising the steps of: a) providing an endoscopic ligating device, said device having a surgical needle, a tube, and a filamentary strand attached at its distal end to the surgical needle, and slideably engaged at its proximal end about said tube with a partially tightened knot; b) passing said surgical needle down through a trocar into a body cavity wherein the desired ligation is to occur; c) looping said needle around said vessel; d) passing said surgical needle up through said trocar until said needle exits said trocar; e) removing said needle from said filimentary strand; f) inserting said strand into the distal end of said tube and passing said strand up through said tube until a portion of said strand protrudes from the proximal end of said tube; g) sliding said partially tightened knot distally on the tube until said partially tightened knot disengages from said tube and is engaged about said filamentary strand; h) tightening said partially tightened knot about said strand so as to form a fully tightened knot; and i) sliding said fully tightened knot distally on said strand until said fully tightened knot firmly engages and ligates said vessel.
Claim 3
Dependent Claim
19 words
The method of claim 1 wherein the tube is an elongate cylinder having a continuous opening extending axially therethrough.
Claim 4
Dependent Claim
41 words
The method of claim 2 wherein the cross-sectional diameter of the continuous opening is greater than the cross-sectional diameter of the surgical needle and the filamentary strand so as to allow passage of the needle and the strand through the tube.
Claim 5
Dependent Claim
25 words
The method of claim 3 wherein the partially tightened knot is engaged about the tube with five loops disposed around the circumference of the tube.
Claim 6
Dependent Claim
31 words
The method of claim 4 wherein the partially tightened knot terminates with a pulling end of the filamentary strand, wherein the knot can be fully tightened by pulling said pulling end.
Claim 7
Dependent Claim
29 words
The method of claim 5 wherein the knot, when fully tightened, is configured to allow sliding movement in one direction and to prevent sliding movement in the opposite direction.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein the fully tightened knot is adapted to ligate a bodily vessel.
Claim 9
Dependent Claim
19 words
The method of claim 7 wherein continuous opening of the the elongate cylinder has a substantially constant cross-sectional diameter.
Claim 10
Dependent Claim
14 words
The method of claim 8 wherein the elongate cylinder has a tapered distal portion.
Claim 11
Dependent Claim
15 words
The method of claim 9 wherein the elongate cylinder is composed of a flexible plastic.
Claim 12
Dependent Claim
16 words
The method of claim 10 wherein the filamentary strand is composed of a surgical suture material.
Claim 13
Dependent Claim
11 words
The method of claim 11 wherein the suture material is bioabsorbable.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |