US5007922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a surgical suture
Assignee: Ethicon Inc
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Filing: 1989-11-13
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Granted: 1991-04-16
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Expires: 2009-11-13
Abstract
Abstract A needle-suture combination with reduced diameter portion of the suture being attached to the blunt end of the needle. The maximum diameter of the suture being almost the same but no larger than the diameter of the blunt end of the needle and the reduced diameter portion of the suture having a tensile strength greater than the remainder of the suture. The suture is prepared by winding a monofilament in a helical configuration, heating and drawing a portion of the monofilament to reduce the diameter in the heated drawn portion, and cutting the monofilament to produce a suture that has a reduced diameter at its end.
Inventors
- 👤 Chao Chen
- 👤 Arthur Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:36
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; A61B17/06004; A61L; A61L17/00; A61L17/14; A61B17/06195; A61B2017/06028
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A method for producing a surgical suture having a reduced diameter end portion comprising: (a) winding a monofilament in a helical configuration; (b) heating a portion of said monofilament to an elevated temperature; (c) drawing said heated portion while in said helical configuration to reduce the diameter of said heated and drawn portion; and (d) severing said monofilament to produce a suture having a reduced diameter end portion.
Claim 2
Independent Claim
68 words
A method for producing a surgical suture having a reduced diameter end portion comprising: (a) winding a monofilament in a helical configuration; (b) heating a portion of said monofilament to an elevated temperature; (c) drawing said heated portion while in said helical configuration to reduce the diameter of said heated and drawn portion; and (d) severing said monofilament to produce a suture having a reduced diameter end portion.
Claim 3
Dependent Claim
32 words
A method according to claim 1 wherein the monofilament is wound in a helical configuration having multiple convolutions and adjacent portions of the convolutions are heated and drawn to reduce their diameter.
Claim 4
Dependent Claim
32 words
A method according to claim 1 or 2 wherein the monofilament is severed in the reduced diameter portion to produce a suture having a reduced diameter portion at each of its ends.
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) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |