US5697976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bioabsorbable implant material
Assignee: United States Surgical Corp
•
Filing: 1994-09-14
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Granted: 1997-12-16
•
Expires: 2014-09-14
Abstract
Abstract A porous bioabsorbable surgical implant material is prepared by coating particles of bioabsorbable polymer with tissue ingrowth promoter. Typical bioabsorbable polymers include polymers of glycolide, lactide, caprolactone, trimethylene carbonate, dioxanone, and physical and chemical combinations thereof. The tissue ingrowth promoter can include calcium hydroxide and/or a hydrophilic coating material. The hydrophilic coating material can be bioabsorbable or non-bioabsorbable. A typical non-bioabsorbable hydrophilic coating material is polyhydroxyethyl methacrylate (PHEMA). The bioabsorbable implant material may also contain a therapeutic agent. Typical therapeutic agents include an antimicrobial agent, dye, growth factors and combinations thereof.
Inventors
- 👤 Michael P. Chesterfield
- 👤 Robert D. Torgerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
A; A61; A61L; A61L27/00; A61L27/50; A61L27/56; A61F; A61F2/00; A61F2/02; A61F2/28; A61L27/14; A61L27/18; A61L27/28; A61L27/30; A61L27/34; A61L27/58; C; C08; C08L; C08L67/00; C08L67/04; Y; Y10; Y10S; Y10S525/00; Y10S525/937; Y10S623/00; Y10S623/92; Y10S623/923
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A material suitable for forming a surgical implant, the material comprising bioabsorbable particles, said particles having a coating of at least one tissue ingrowth promoter, wherein said bioabsorbable particles are particles of a bioabsorbable synthetic polymer, and wherein said coating further comprises a hydrophilic bioabsorbable polymer said hydrophilic bioabsorbable polymer comprising a blend of glycolide/lactide copolymer and polyethylene oxide.
Claim 2
Dependent Claim
59 words
A material suitable for forming a surgical implant, the material comprising bioabsorbable particles, said particles having a coating of at least one tissue ingrowth promoter, wherein said bioabsorbable particles are particles of a bioabsorbable synthetic polymer, and wherein said coating further comprises a hydrophilic bioabsorbable polymer said hydrophilic bioabsorbable polymer comprising a blend of glycolide/lactide copolymer and polyethylene oxide.
Claim 3
Dependent Claim
17 words
The surgical implant material of claim 1, wherein said tissue ingrowth promoter comprises a calcium containing material.
Claim 4
Dependent Claim
15 words
The surgical implant material of claim 2, wherein said calcium containing material comprises calcium hydroxide.
Claim 5
Dependent Claim
15 words
The surgical implant material of claim 1, wherein said tissue ingrowth promoter includes polyhydroxyethyl methacrylate.
Claim 6
Dependent Claim
34 words
The surgical implant material of claim 1, wherein said synthetic polymer comprises a polymer selected from the group consisting of polymers of glycolide, lactide, caprolactone, trimethylene carbonate, dioxanone, and physical and chemical combinations thereof.
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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) | 2000-12-15 | 2001-06-16 | 2001-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-15 | 2005-06-16 | 2005-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-15 | 2009-06-16 | 2009-12-16 | $7700.00 | Window Closed / Lapsed |