US4546769A
Expired / Lapsed
US
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Suture thread
Assignee: Deutschen Institute für Textil und Faserforschung
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Filing: 1984-02-14
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Granted: 1985-10-15
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Expires: 2004-02-14
Abstract
Abstract A suture thread which comprises a jacket (or sheath) of a tubular braided structure made of yarns which are not crimped and a core located within the jacket containing crimped fibers. The jacket is formed by braiding the non-crimped yarns around the core.
Inventors
- 👤 Heinrich Planck
- 👤 Wolfgang Joas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:27
CPC Classifications
D; D04; D04C; D04C3/00; D04C3/48; A; A61; A61B; A61B17/00; A61B17/04; A61B17/06; A61B17/06166; D04C1/00; D04C1/06; D04C1/12; D10; D10B; D10B2401/00; D10B2401/06; D10B2401/061; D10B2509/00; D10B2509/04
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
105 words
A suture thread which comprises a jacket of a tubular braided structure made of yarns which are not crimped, said jacket having been produced by braiding around a core made of fibers, and said core located within the jacket containing crimped fibers; said jacket having a tubular braided structure braided from a number of multi-filament braid yarns taken from braider bobbins, the number of multifilament yarns used during the braiding of the jacket being greater as compared with conventional suture threads of the same diameter range (USP size) and the number of braids per unit length being smaller as compared with said conventional suture threads.
Claim 2
Dependent Claim
105 words
A suture thread which comprises a jacket of a tubular braided structure made of yarns which are not crimped, said jacket having been produced by braiding around a core made of fibers, and said core located within the jacket containing crimped fibers; said jacket having a tubular braided structure braided from a number of multi-filament braid yarns taken from braider bobbins, the number of multifilament yarns used during the braiding of the jacket being greater as compared with conventional suture threads of the same diameter range (USP size) and the number of braids per unit length being smaller as compared with said conventional suture threads.
Claim 3
Dependent Claim
15 words
A suture thread according to claim 1, wherein all fibers forming the core are crimped.
Claim 4
Dependent Claim
19 words
A suture thread according to claim 1, wherein the core consists of fibers in the form of doubled yarns.
Claim 5
Dependent Claim
15 words
A suture thread according to claim 1, wherein the core has a tubular braided structure.
Claim 6
Dependent Claim
18 words
A suture thread according to claim 1, wherein the core consists of a ply yarn of crimped fibers.
Claim 7
Dependent Claim
58 words
A suture thread of USP size 5-0 according to claim 1, wherein said jacket is braided with a braider bobbin number K of 10 or 12 and a braid number Z of 10-20, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 8
Dependent Claim
54 words
A suture thread of USP size 4-0 or 3-0 according to claim 1, wherein said jacket is braided with K being 10, 12 or 14 and Z being 15-25, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 9
Dependent Claim
52 words
A suture thread of USP size 2-0 according to claim 1, wherein said jacket is braided with K being 12, 14 or 16 and Z being 17-27, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 10
Dependent Claim
56 words
A suture thread of USP size 0 or 1 according to claim 1, wherein said jacket is braided with K being 14, 16, 18, 20 or 24 and Z being 14-27, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 11
Dependent Claim
59 words
A suture thread of USP size 2 or 2 and 4 according to claim 1, wherein said jacket is braided with K being 16, 18, 20, 22, 24 or 26 and Z being 17-30, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 12
Dependent Claim
54 words
A suture thread of USP size 5 according to claim 1, wherein said jacket is braided with K being 18, 20, 22, 24 or 26 and Z being 17-30, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 13
Dependent Claim
53 words
A suture thread of USP size 6 according to claim 1, wherein said jacket is braided with K being 20, 22, 24 or 26 and Z being 17-30, and wherein K is the number of braider bobbins used during braiding of said jacket and Z is the number of braids per French inch.
Claim 14
Dependent Claim
30 words
A suture thread according to claim 1, wherein said core has an axial elasticity value so that the knot tear strength of the thread is essentially determined by the jacket.
Claim 15
Dependent Claim
13 words
A suture thread according to claim 1, wherein said core is axially pretensioned.
Claim 16
Dependent Claim
51 words
A process for the production of a suture thread according to claim 14, wherein said crimped fibers constituting the core are pretensioned on their way to the braiding site and, in the pretensioned condition, are surrounded by braiding with the braiding yarns supplied by the braider bobbins to the braiding site.
Claim 17
Dependent Claim
31 words
A suture thread according to claim 1, wherein said jacket is braided from multifilament yarns which are not crimped and which have a minor twist or are devoid of any twist.
Claim 18
Dependent Claim
71 words
A suture thread according to claim 1, wherein said jacket has a tubular braid structure braided from a number of multi-filament braid yarns taken from braider bobbins, the number of braider bobbins used during the braiding of the jacket being greater as compared with conventional suture threads of the same diameter range (USP size) and the number of braids per unit length being smaller as compared with said conventional suture threads.
Claim 19
Dependent Claim
32 words
A suture thread according to claim 1, wherein said core located within the jacket contains crimped fibers comprising a false twist yarn having high elasticity having a crimped contraction of about 60-65%.
Claim 20
Dependent Claim
39 words
A suture thread according to claim 1, wherein said suture thread has a reduced bending resistance on the order of 1/2 to 1/4 that of the bending resistance of a suture thread having a core consisting of non-crimped fibers.
Claim 21
Dependent Claim
16 words
A suture thread according to claim 1, wherein the fibers in the core are synthetic fibers.
Claim 22
Dependent Claim
13 words
A suture thread according to claim 20, wherein the synthetic fibers are filaments.
Claim 23
Dependent Claim
22 words
A suture thread according to claim 1, wherein the fibers forming the core are natural silk-fibroin fibers or fibers of polyglycolic acid.
Claim 24
Dependent Claim
40 words
A suture thread according to claim 1, wherein said suture thread has a reduced bending resistance on the order of 1/2 to 1/4 of that of the bending resistance of a suture thread having a core consisting of non-crimped fibers.
Claim 25
Dependent Claim
15 words
A suture thread according to claim 23, wherein all fibers forming the core are crimped.
Claim 26
Dependent Claim
32 words
A suture thread according to claim 23, wherein said core located within the jacket contains crimped fibers comprising a false twist yarn having high elasticity exhibiting a crimped contraction of about 60-65%.
Claim 27
Dependent Claim
13 words
A suture thread according to claim 23, wherein said core is axially pretensioned.
Claim 28
Dependent Claim
51 words
A process for the production of a suture thread according to claim 26, wherein said crimped fibers constituting the core are pretensioned on their way to the braiding site and, in the pretensioned condition, are surrounded by braiding with the braiding yarns supplied by the braider bobbins to the braiding site.
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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |