US3893196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Body implant material
Assignee: Individual
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Filing: 1972-10-11
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Granted: 1975-07-08
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Expires: 1992-10-11
Abstract
Abstract A material for use in fabricating a prosthesis or other body implant comprises graphite or boron fibers embedded in or coated with a medically inert plastic. The plastic binder may be a medical grade silicone polymer or the plastic may, for example, be an epoxy resin and with the epoxy resin being coated with a medically inert silicone polymer. The resultant composite has substantially better mechanical and clinical properties than conventional materials.
Inventors
- 👤 Robert F Hochman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:32
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3662; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72; A61F2/3094; A61F2/30965; A61L; A61L27/00; A61L27/40; A61L27/44; A61B17/7283; A61F2/367; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30009; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30131; A61F2002/30316; A61F2002/30317; A61F2002/30327; A61F2002/30535; A61F2002/30593; A61F2002/30594; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2/3609; A61F2002/3625; A61F2002/3631; A61F2002/3678; A61F2002/368; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0013; A61F2250/00; A61F2250/0014; A61F2250/0028; A61F2250/0039; B; B29; B29L; B29L2031/00; B29L2031/753; B29L2031/7532
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
108 words
A body implant including a structure with a longitudinally layered stem portion shaped for internal body placement and comprising a composite of fibers embedded and coated with plastic, the fibers being of the group consisting of graphite fibers and boron fibers, at least the outer surface of the structure being of plastic material substantially inert to substances in the human body, and with the fibers of an inner layer of the stem portion oriented in the longitudinal direction thereof and with the fibers of an outer layer of the stem portion oriented in a circumferential direction generally at right angles to the fiber orientation in the inner layer.
Claim 2
Dependent Claim
108 words
A body implant including a structure with a longitudinally layered stem portion shaped for internal body placement and comprising a composite of fibers embedded and coated with plastic, the fibers being of the group consisting of graphite fibers and boron fibers, at least the outer surface of the structure being of plastic material substantially inert to substances in the human body, and with the fibers of an inner layer of the stem portion oriented in the longitudinal direction thereof and with the fibers of an outer layer of the stem portion oriented in a circumferential direction generally at right angles to the fiber orientation in the inner layer.
Claim 3
Dependent Claim
82 words
AN ORTHOPEDIC IMPLANT COMPRISING A SHAPED COMPOSITE WITH A LONGITUDINALLY LAYERED STEM PORTION AND INCLUDING AN ORGANOPOLYSILOXANE PRESENTING AN OUTER SURFACE THAT IS INERT TO SUBSTANCES IN THE HUMAN BODY, AND FIBERS INCLUDED IN THE COMPOSITE FOR REINFORCEMENT AND WITHIN THE OUTER SURFACE AND OF THE GROUP CONSISTING OF GRAPHITE FIBERS AND BORON FIBERS, AND WITH THE FIBERS OF ONE LAYER OF THE STEM PORTION ORIENTED LONGITUDINALLY THEREOF AND WITH THE FIBERS OF AN ADJACENT LAYER ORIENTED IN A GENERALLY CIRCUMFERENTIAL DIRECTION.
Claim 4
Dependent Claim
82 words
AN ORTHOPEDIC IMPLANT COMPRISING A SHAPED COMPOSITE WITH A LONGITUDINALLY LAYERED STEM PORTION AND INCLUDING AN ORGANOPOLYSILOXANE PRESENTING AN OUTER SURFACE THAT IS INERT TO SUBSTANCES IN THE HUMAN BODY, AND FIBERS INCLUDED IN THE COMPOSITE FOR REINFORCEMENT AND WITHIN THE OUTER SURFACE AND OF THE GROUP CONSISTING OF GRAPHITE FIBERS AND BORON FIBERS, AND WITH THE FIBERS OF ONE LAYER OF THE STEM PORTION ORIENTED LONGITUDINALLY THEREOF AND WITH THE FIBERS OF AN ADJACENT LAYER ORIENTED IN A GENERALLY CIRCUMFERENTIAL DIRECTION.
References Cited (Backward Citations)
US3314420A
Cited
US3526906A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |