US5234443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscopic knot tying apparatus and methods
Assignee: University of California
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Filing: 1991-07-26
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Granted: 1993-08-10
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Expires: 2011-07-26
Abstract
Abstract A suture applying and tying device comprises at least one grasping device for securing a length of suture, a second grasping device for forming a loop in a length of the suture, and a pushing rod for advancing the loop towards tissue.
Inventors
- 👤 Cu N. Phan
- 👤 Marshall L. Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 15:59
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/0469; A61B17/34; A61B17/3417; A61B17/3421; A61B2017/3445
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
94 words
A surgical thread applying and tying device comprising: a first grasping member including an elongate shaft having proximal and distal ends and means at the distal end for securing a length of thread; a second grasping member including an elongate shaft having proximal and distal ends and means at the distal end for securing the thread, forming a loop within the thread, and pulling a free end of the thread through said loop; and means disposed on the first grasping member for advancing the loop in a forward direction relative to the securing means.
Claim 2
Dependent Claim
94 words
A surgical thread applying and tying device comprising: a first grasping member including an elongate shaft having proximal and distal ends and means at the distal end for securing a length of thread; a second grasping member including an elongate shaft having proximal and distal ends and means at the distal end for securing the thread, forming a loop within the thread, and pulling a free end of the thread through said loop; and means disposed on the first grasping member for advancing the loop in a forward direction relative to the securing means.
Claim 3
Dependent Claim
36 words
The device of claim 1, wherein the advancing means comprises a cylindrical rod having proximal and distal ends and a central lumen extending therethrough, wherein the first grasping member is slidably received in the central lumen.
Claim 4
Dependent Claim
14 words
The device of claim 2, wherein the rod include a cutout along one side.
Claim 5
Dependent Claim
35 words
The device of claim 1, further comprising means on the second grasping member for flexing the distal end to deflect the thread securing means to facilitate loop forming by rotating the shaft about its axis.
Claim 6
Dependent Claim
35 words
The device of claim 1, wherein the first grasping means comprises an elongate shaft having proximal and distal ends, with pivotable jaws attached at the distal end and a handle attached at the proximal end.
Claim 7
Independent Claim
92 words
A method for tying a knot in surgical thread comprising: a) securing a first end of the thread with a first grasping means; b) securing a length of the thread proximal to the first end with a second grasping means; c) axially rotating the second grasping means, thereby creating a loop in the thread; d) securing a second end of the thread with the second grasping means; e) pulling the second end of the thread through the loop, thereby forming a slip knot; and f) advancing the knot in a forward direction.
Claim 8
Independent Claim
92 words
A method for tying a knot in surgical thread comprising: a) securing a first end of the thread with a first grasping means; b) securing a length of the thread proximal to the first end with a second grasping means; c) axially rotating the second grasping means, thereby creating a loop in the thread; d) securing a second end of the thread with the second grasping means; e) pulling the second end of the thread through the loop, thereby forming a slip knot; and f) advancing the knot in a forward direction.
Claim 9
Dependent Claim
47 words
The method of claim 6, wherein step (b) includes advancing the second grasping means beyond a length of thread proximal to the first end; capturing the length of thread by retracting the second grasping means; and securing the captured length of thread to the second grasping means.
Claim 10
Dependent Claim
22 words
The method of claim 7, wherein the knot is advanced with a rod which is mounted coaxially with the first grasping means.
Claim 11
Dependent Claim
24 words
The method of claim 7, wherein the capturing step includes capturing the length of thread with a flexed end of the second grasping means.
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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) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |