US4968317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical materials and devices
Assignee: Biocon Oy
•
Filing: 1987-12-29
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Granted: 1990-11-06
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Expires: 2007-12-29
Abstract
Abstract Surgical material of resorbable polymer, copolymer, or polymer mixture containing at least partially fibrillated structural units, and use thereof.
Inventors
- 👤 Pertti Tormala
- 👤 Pentti Rokkanen
- 👤 Seppo Vainionpaa
- 👤 Juha Laiho
- 👤 Veli-Pekka Heponen
- 👤 Timo Pohjonen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:53
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/14; A61L31/148; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/80; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/30; A61F2/3094; A61F2/30965; A61L31/04; A61L31/06; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30009; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2210/00; A61F2210/0004; A61F2230/00; A61F2230/0063; A61F2230/0069; A61F2250/00; A61F2250/0014; A61F2250/0028
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
Surgical composite comprising a material selected from the group of resorbable polymer, resorbable copolymer, and mixtures thereof and further containing oriented, at least partially fibrillated structural units (fibrils) which have been induced into the material providing said units while said material is in its original nonfibrillar state by drawing said material in solid state.
Claim 2
Dependent Claim
54 words
Surgical composite comprising a material selected from the group of resorbable polymer, resorbable copolymer, and mixtures thereof and further containing oriented, at least partially fibrillated structural units (fibrils) which have been induced into the material providing said units while said material is in its original nonfibrillar state by drawing said material in solid state.
Claim 3
Dependent Claim
26 words
The surgical composite of claims 1 being in the form of a device selected from the group consisting of rods, plates, screws, nails, tubes and clamps.
Claim 4
Dependent Claim
14 words
The surgical composite of claim 1 which contains at least partially ultraoriented structural units.
Claim 5
Dependent Claim
24 words
The surgical composite of claim 1 having shear strength value of at least 200 MPa and shear modulus value of at least 4 GPa.
Claim 6
Dependent Claim
25 words
The surgical composite of claim 1 having a bending strength value of at least 200 MPa and bending modulus value of at least 4 GPa.
Claim 7
Dependent Claim
25 words
The surgical composite of claim 3 having a bending strength value of at least 200 MPa and bending modulus value of at least 4 GPa.
Claim 8
Dependent Claim
24 words
The surgical composite of claim 3 having shear strength value of at least 200 MPa and shear modulus value of at least 4 GPa.
Claim 9
Dependent Claim
19 words
The surgical composite of claim 1 the composite comprises a matrix and reinforcement fiber that are the same chemically.
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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) | 1993-11-05 | 1994-05-07 | 1994-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-11-05 | 1998-05-07 | 1998-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-11-05 | 2002-05-07 | 2002-11-06 | $7700.00 | Window Closed / Lapsed |