US5702446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone prosthesis
Assignee: The University of Texas System
•
Filing: 1996-10-18
•
Granted: 1997-12-30
•
Expires: 2016-10-18
Abstract
Abstract A bone prosthesis having a porous or mesh type mating surface for attachment to bone and at least one continuous hollow internal chamber is disclosed. The prosthesis also includes at least one portal and at least one channel extending from each hollow chamber that allows communication between the chamber of the prosthesis and the mating surface of the device. Biomaterial for enhancing bone growth is injected in fluid form through a portal of the device into a hollow chamber, simultaneous with or after press fitting the prosthesis into the bone. Biomaterial thereby reaches bone mating surfaces through one or more channels. Bony growth at a mating surface of the prosthesis is enhanced, and union of the prosthesis with bone is thereby promoted.
Inventors
- 👤 Robert C. Schenck
- 👤 C. Mauli Agrawal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:32
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30767; A61F2/30907; A61F2/32; A61F2/36; A61F2/3662; A61F2/367; A61F2/46; A61F2/4601; A61F2/28; A61F2002/2817; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30062; A61F2002/30316; A61F2002/30535; A61F2002/30581; A61F2002/30586; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/30909; A61F2/3609; A61F2002/3625; A61F2002/3647; A61F2002/3678; A61F2002/368; A61F2002/3694; A61F2210/00; A61F2210/0004; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00029; A61F2310/00179; A61F2310/00389; A61F2310/00395; A61F2310/00407; A61F2310/00413
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A bone prosthesis having a non-mating surface and a porous mesh bone-mating surface, at least one continuous hollow internal chamber, at least one branch channel extending from each chamber to the mating surface of the prosthesis, and a port hole at the non-mating surface through which fluid may be introduced into each internal chamber.
Claim 2
Dependent Claim
54 words
A bone prosthesis having a non-mating surface and a porous mesh bone-mating surface, at least one continuous hollow internal chamber, at least one branch channel extending from each chamber to the mating surface of the prosthesis, and a port hole at the non-mating surface through which fluid may be introduced into each internal chamber.
Claim 3
Dependent Claim
50 words
A bone prosthesis having a porous mesh bone-mating surface, at least one continuous hollow internal chamber, at least one branch channel extending from each chamber to the mating surface of the prosthesis, and a port hole at a non-mating surface through which fluid may be introduced into each internal chamber.
Claim 4
Dependent Claim
50 words
A bone prosthesis having a porous mesh bone-mating surface, at least one continuous hollow internal chamber, at least one branch channel extending from each chamber to the mating surface of the prosthesis, and a port hole at a non-mating surface through which fluid may be introduced into each internal chamber.
Claim 5
Dependent Claim
15 words
The prosthesis of claim 1 or 2, wherein the prosthesis is substantially made of metal.
Claim 6
Dependent Claim
15 words
The prosthesis of claim 1 or 2, wherein the prosthesis is substantially made of ceramic.
Claim 7
Dependent Claim
15 words
The prosthesis of claim 1 or 2, wherein the prosthesis is substantially made of polymer.
Claim 8
Dependent Claim
16 words
The prosthesis of claim 1 or 2, wherein the prosthesis is substantially made of composite material.
Claim 9
Dependent Claim
25 words
The prosthesis of claim 1 or 2, wherein the prosthesis comprises two internal chambers, a portal for each chamber, and a termination for each chamber.
Claim 10
Dependent Claim
14 words
The prosthesis of claim 7 wherein the chamber terminations are on the nonmating surface.
References Cited (Backward Citations)
US4120730A
Cited
US4355426A
Cited
US4012796A
Cited
US4279249A
Cited
US4274163A
Cited
US4546500A
Cited
US4698063A
Cited
US4563489A
Cited
EP0194192A1
Cited
US4795467A
Cited
US4750905A
Cited
US4795475A
Cited
US4804382A
Cited
US4920203A
Cited
GB2215209A
Cited
US5250585A
Cited
US5250584A
Cited
EP0361896A2
Cited
US5258029A
Cited
US4978358A
Cited
US4938772A
Cited
WO1990004982A1
Cited
US5116377A
Cited
WO1990013302A1
Cited
US5376123A
Cited
US5098779A
Cited
EP0550875A1
Cited
US5263986A
Cited
US5281419A
Cited
US5522895A
Cited
EP0636377A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-12-29 | 2001-06-30 | 2001-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-29 | 2005-06-30 | 2005-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-29 | 2009-06-30 | 2009-12-30 | $7700.00 | Window Closed / Lapsed |