Patent US4845851A successfully refreshed from Google Patents.
US4845851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic suture cutting device
Assignee: MILLIKEN RESEARCH Corp A CORP OF
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Filing: 1987-12-09
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Granted: 1989-07-11
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Expires: 2007-12-09
Abstract
Abstract A device is provided for severing the tails of a knot formed in sutures of a wide variety of cross-sectional dimensions which includes a housing, an electrical heating element forming at least a portion of a notch, guide means operably associated with the heating element and the housing, the guide means functioning to bring the tails of the knot into contact with the heating element and meams for electrically supplying power to the heating element.
Inventors
- 👤 William P. Warthen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:52
CPC Classifications
B; B26; B26F; B26F3/00; B26F3/06; B26F3/08; B26F3/12; A; A61; A61B; A61B17/00; A61B17/04; A61B17/0467; B65; B65H; B65H54/00; B65H54/70; B65H54/71; B65H2701/00; B65H2701/30; B65H2701/31; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1054; Y10T156/12; Y10T156/1313
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
110 words
A device for severing the tails of a knot formed in sutures of a wide variety of cross sectional dimensions, comprising: (a) a housing; (b) a pair of spaced, opposed guides extending from said housing, said guides forming a slot having sufficient width to accommodate the largest cross sectional dimension of said sutures; (c) an electrical heating element positioned across said slot at an oblique angle forming a notch such that one side wall of said notch is formed from one of said guides and the other side wall of said notch is formed from said heating element; and (d) means for interruptibly supplying electrical power to said heating element.
Claim 2
Independent Claim
110 words
A device for severing the tails of a knot formed in sutures of a wide variety of cross sectional dimensions, comprising: (a) a housing; (b) a pair of spaced, opposed guides extending from said housing, said guides forming a slot having sufficient width to accommodate the largest cross sectional dimension of said sutures; (c) an electrical heating element positioned across said slot at an oblique angle forming a notch such that one side wall of said notch is formed from one of said guides and the other side wall of said notch is formed from said heating element; and (d) means for interruptibly supplying electrical power to said heating element.
Claim 3
Dependent Claim
21 words
The device of claim 1 wherein said oblique angle of said notch is from about 70 degrees to about 25 degrees.
Claim 4
Dependent Claim
18 words
The device of claim 1 wherein said electrical power is provided by a power source within said housing.
Claim 5
Dependent Claim
52 words
The device of claim 1 wherein said heating element and said guide means form a cutting head and wherein power is supplied to said heating element by the application of force to said cutting head in a direction away from said knot while said tails are in contact with said heating element.
Claim 6
Dependent Claim
24 words
The device of claim 4 wherein said power is automatically interrupted by the cessation of said force which occurs upon severance of said tails.
Claim 7
Independent Claim
144 words
A device for severing the tails of a knot tied in a surgical suture, which comprises a housing; a source of electrical power in said housing; a pair of electrically conductive members mounted on said housing operably associated with said source of electrical power and spaced from one another forming a slot wherein the side wall of at least one of said electrically conductive members forming said slot is shaped in a descending stepwise manner to accommodate surgical sutures of varying cross sectional dimensions; a resistance heater means connected to both of said conductive members and mounted on said conductive members at a mounting angle forming a notch such that a wide range of suture diameters will pass through said slot and means operably associated with said source of electrical power and said electrically conductive members to supply electrical power to said heater means.
Claim 8
Independent Claim
144 words
A device for severing the tails of a knot tied in a surgical suture, which comprises a housing; a source of electrical power in said housing; a pair of electrically conductive members mounted on said housing operably associated with said source of electrical power and spaced from one another forming a slot wherein the side wall of at least one of said electrically conductive members forming said slot is shaped in a descending stepwise manner to accommodate surgical sutures of varying cross sectional dimensions; a resistance heater means connected to both of said conductive members and mounted on said conductive members at a mounting angle forming a notch such that a wide range of suture diameters will pass through said slot and means operably associated with said source of electrical power and said electrically conductive members to supply electrical power to said heater means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-10 | 1993-01-09 | 1993-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-10 | 1997-01-09 | 1997-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-10 | 2001-01-09 | 2001-07-11 | $7700.00 | Window Closed / Lapsed |