US4624673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device system for dental prosthesis fixation to bone
Assignee: UNITED STATES MEDICAL Corp A CORP OF DE
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Filing: 1982-08-03
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Granted: 1986-11-25
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Expires: 2002-08-03
Abstract
Abstract A two part system for fastening a dental prosthesis to the jaw bone having as a first part, an externally threaded thin wall sleeve which resides entirely within the jaw bone. The threads or other surface features are confined to the area near the point where the prosthesis enters the jaw bone. The sleeve has integrally, or accommodates, a non-threaded stem which extends relatively deeply into the jaw bone. The inner bore of the sleeve is a cone of a mechanically self locking taper. The second part, which extends outwardly from the jaw bone through the gum tissue, has a mating external taper which is driven within the sleeve to be locked therein. The second part supports an artificial tooth, bridge or other dental appliance. The concept also is applicable to a prosthetic device for any body joint.
Inventors
- 👤 Benjamin S. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:20
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61C; A61C8/00; A61C8/0018; A61C8/0048; A61C8/005; A61C8/0069; A61C8/008; A61F2/30721; A61F2/30734; A61F2/32; A61B; A61B17/00; A61B17/16; A61B17/1659; A61C8/0054; A61C8/006; A61F2/30749; A61F2/36; A61F2/3662; A61F2/367; A61F2/3676; A61F2/38; A61F2002/30738; A61F2/30767; A61F2/30771; A61F2002/30841; A61F2002/30845; A61F2002/3085; A61F2002/30878; A61F2002/30879; A61F2002/30884; A61F2002/30891; A61F2002/30894; A61F2/3609; A61F2002/3625; A61F2002/3631; A61F2002/3678; A61F2002/369; A61F2002/4681; A61F2220/00; A61F2220/0008
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A component for use in a prosthetic joint comprising a hollow tubular means which has a closed end and an open end, the portion of said tubular means which is adjacent the open end having external features which increase its surface area to at least twice the surface area of the portion adjacent the closed end and the inner surface of said portion adjacent the open end defining a female part of self-locking taper; and elongated pin means having a first section which is adjacent to one end of said pin means defining a male cone of self-locking taper which is received in said female part and coacts therewith and a second section which is adjacent the other end of said pin means which projects from the open end of said hollow tubular means to serve as a support for a joint motion surface.
Claim 2
Dependent Claim
144 words
A component for use in a prosthetic joint comprising a hollow tubular means which has a closed end and an open end, the portion of said tubular means which is adjacent the open end having external features which increase its surface area to at least twice the surface area of the portion adjacent the closed end and the inner surface of said portion adjacent the open end defining a female part of self-locking taper; and elongated pin means having a first section which is adjacent to one end of said pin means defining a male cone of self-locking taper which is received in said female part and coacts therewith and a second section which is adjacent the other end of said pin means which projects from the open end of said hollow tubular means to serve as a support for a joint motion surface.
Claim 3
Dependent Claim
16 words
A component as defined in claim 1 wherein said external features are a self tapping thread.
Claim 4
Dependent Claim
25 words
A component as defined in claim 1 wherein said external features are flutes which broach the bone upon implantation without the aid of additional reaming.
Claim 5
Dependent Claim
18 words
A component as defined in claim 1 wherein the portion adjacent the closed end is a smooth cylinder.
Claim 6
Dependent Claim
19 words
A component as defined in claim 1 wherein the portion adjacent the closed end is cruciform in cross section.
Claim 7
Dependent Claim
16 words
A component as defined in claim 1 wherein the portion adjacent the closed end is tapered.
Claim 8
Dependent Claim
24 words
A component as defined in claim 1, wherein the external surface of the portion adjacent the open end is defined by self-tapping thread means.
Claim 9
Dependent Claim
23 words
A component as defined in claim 1, wherein the external surface of the portion adjacent the closed end is defined by a cylinder.
Claim 10
Dependent Claim
12 words
A component as defined in claim 1, wherein the cylinder is smooth.
Claim 11
Dependent Claim
27 words
A component as defined in claim 1, wherein the external surface of the portion adjacent the closed end is defined by a geometry of uniform cross section.
Claim 12
Dependent Claim
13 words
A component as defined in claim 10, wherein the geometry defines a cruciform.
References Cited (Backward Citations)
US2210424A
Cited
US3820167A
Cited
US4077070A
Cited
US3943576A
Cited
US3848272A
Cited
US3848276A
Cited
US4016651A
Cited
US3996625A
Cited
US4179810A
Cited
DE2726297A1
Cited
EP0000549A1
Cited
US4219893A
Cited
DE2808740A1
Cited
EP0010527A1
Cited
GB2063680A
Cited
US4293302A
Cited
EP0041591A1
Cited
US4409974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |