Patent US3798772A successfully refreshed from Google Patents.
Patent US4195409A successfully refreshed from Google Patents.
US4195409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant
Assignee: Child Laboratories Inc
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Filing: 1978-02-13
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Granted: 1980-04-01
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Expires: 1998-02-13
Abstract
Abstract A tooth prosthesis located in a mandible tooth socket having a root supporting a crown. The root has a cone-shaped head located in a recess in the bottom of the crown and a stem extended into the socket. An elastic body of ethylene vinyl acetate (EVA) copolymer surrounds and is bonded to the stem. The outer surface of the elastic body is bonded to the inside surface of a porous fabric which permits bone ingrowth to anchor the prosthesis to the mandible. The fabric has a pyrolite carbon outer skin. The upper edge of the fabric is spaced from the crown and head whereby the elastic body allows limited movement of the crown relative to the fabric.
Inventors
- 👤 Frank W. Child
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:15
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0048; A61C8/0075; A61C8/0012; A61C8/0018; A61C8/0086; A61C8/0016; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30136; A61F2002/30316; A61F2002/30535; A61F2002/30563; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2250/00; A61F2250/0014; A61F2250/0018
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
98 words
A prosthesis for tooth replacement in a living body comprising: a root having a head and a stem, a crown attached to the head, said crown having a cavity accommodating the head and an edge surrounding the cavity, an elastic body surrounding and mounted on the stem, said body having a portion located in engagement with said edge of the crown, and porous means surrounding the elastic body and secured thereto, said porous means and elastic-body being deformable for insertion into a mandible tooth socket whereby bone growth into the porous means anchors the root to the bone.
Claim 2
Dependent Claim
98 words
A prosthesis for tooth replacement in a living body comprising: a root having a head and a stem, a crown attached to the head, said crown having a cavity accommodating the head and an edge surrounding the cavity, an elastic body surrounding and mounted on the stem, said body having a portion located in engagement with said edge of the crown, and porous means surrounding the elastic body and secured thereto, said porous means and elastic-body being deformable for insertion into a mandible tooth socket whereby bone growth into the porous means anchors the root to the bone.
Claim 3
Dependent Claim
28 words
The prosthesis of claim 1 wherein: the head has a truncated cone shape and the crown has a truncated cone shape cavity for accommodating the cone shaped head.
Claim 4
Dependent Claim
13 words
The prosthesis of claim 1 wherein: the stem is a corrugated cylindrical member.
Claim 5
Dependent Claim
17 words
The prosthesis of claim 1 wherein: the outside surface of the elastic body has a corrugated shape.
Claim 6
Dependent Claim
17 words
The prosthesis of claim 1 including: at least one layer of pyrolite carbon covering the porous means.
Claim 7
Dependent Claim
30 words
The prosthesis of claim 1 wherein: the porous means is a fabric surrounding the body and bonded thereto, said fabric being spaced from the head and edge of the crown.
Claim 8
Dependent Claim
21 words
The prosthesis of claim 6 wherein: the elastic body engages the head and has a generally uniform thickness around the stem.
Claim 9
Dependent Claim
17 words
The prosthesis of claim 7 including: at least one layer of pyrolite carbon attached to the fabric.
Claim 10
Dependent Claim
31 words
The prosthesis of claim 6 wherein: the fabric has an inside surface and the body has an outside surface, said inside surface being bonded to the outside surface of the body.
Claim 11
Dependent Claim
15 words
The prosthesis of claim 1 wherein: the root has an outer layer of pyrolite carbon.
Claim 12
Dependent Claim
21 words
The prosthesis of claim 1 wherein: the porous means comprises a fabric bonded to the outside surface of the elastic body.
Claim 13
Dependent Claim
16 words
The prosthesis of claim 11 including: at least one layer of pyrolite carbon covering the fabric.
Claim 14
Dependent Claim
18 words
The prosthesis of claim 12 wherein: the fabric is spaced from the head and edge of the crown.
Claim 15
Dependent Claim
16 words
The prosthesis of claim 12 wherein: the elastic body has a uniform thickness around the stem.
Claim 16
Dependent Claim
35 words
The prosthesis of claim 1 wherein: the head has an annular surface surrounding the stem, said edge of the crown surrounding said annular surface and extended from the head in the direction of the stem.
Claim 17
Dependent Claim
29 words
The prosthesis of claim 15 wherein: said elastic body has an end bonded to said annular surface, said end having a portion located adjacent the edge of the crown.
Claim 18
Independent Claim
105 words
An apparatus for tooth replacement in a living body comprising: crown means having an internal cavity, an edge surrounding the cavity, a root having an attached first portion and a second portion, said first portion located in the cavity and attached to the crown means, an elastic means mounted on the second portion, said elastic means having a portion located adjacent said edge of the crown means, and porous means surrounding the elastic means and secured thereto, said porous means and elastic means being deformable for insertion into a bone tooth socket whereby bone growth into the porous means anchors the root to the bone.
Claim 19
Independent Claim
105 words
An apparatus for tooth replacement in a living body comprising: crown means having an internal cavity, an edge surrounding the cavity, a root having an attached first portion and a second portion, said first portion located in the cavity and attached to the crown means, an elastic means mounted on the second portion, said elastic means having a portion located adjacent said edge of the crown means, and porous means surrounding the elastic means and secured thereto, said porous means and elastic means being deformable for insertion into a bone tooth socket whereby bone growth into the porous means anchors the root to the bone.
Claim 20
Dependent Claim
17 words
The apparatus of claim 17 including: at least one layer of pyrolite carbon covering the porous means.
Claim 21
Dependent Claim
29 words
The apparatus of claim 17 wherein: porous means is a fabric surrounding the elastic means and bonded thereto, said fabric being spaced from the first portion and crown means.
Claim 22
Dependent Claim
31 words
The apparatus of claim 19 wherein: the elastic means engages the first and second portions of the root and has a generally uniform thickness around the second portion of the root.
Claim 23
Dependent Claim
17 words
The apparatus of claim 20 including: at least one layer of pyrolite carbon attached to the fabric.
Claim 24
Dependent Claim
33 words
The apparatus of claim 19 wherein: the fabric has an inside surface and the elastic means has an outside surface, said inside surface being bonded to the outside surface of the elastic means.
Claim 25
Dependent Claim
15 words
The apparatus of claim 17 wherein: the root has an outer layer of pyrolite carbon.
Claim 26
Dependent Claim
21 words
The apparatus of claim 17 wherein: the porous means comprises a fabric bonded to the outside surface of the elastic means.
Claim 27
Dependent Claim
16 words
The apparatus of claim 24 including: at least one layer of pyrolite carbon covering the fabric.
Claim 28
Dependent Claim
21 words
The apparatus of claim 17 wherein: the elastic means has a generally uniform thickness around the second portion of the root.
Claim 29
Independent Claim
110 words
An apparatus for supporting a member in a bone of a living body, said member having a cavity and an edge surrounding the cavity comprising: rigid means having an attached first portion and second portion, said first portion adapted to be located in the cavity and attached to the member, an elastic body mounted on the second portion, said body having a portion located in engagement with said edge of the member, and porous means surrounding the body and secured thereto, said porous means and body being deformable for insertion into a cavity in the bone whereby bone growth into the porous means anchors the rigid means to the bone.
Claim 30
Independent Claim
110 words
An apparatus for supporting a member in a bone of a living body, said member having a cavity and an edge surrounding the cavity comprising: rigid means having an attached first portion and second portion, said first portion adapted to be located in the cavity and attached to the member, an elastic body mounted on the second portion, said body having a portion located in engagement with said edge of the member, and porous means surrounding the body and secured thereto, said porous means and body being deformable for insertion into a cavity in the bone whereby bone growth into the porous means anchors the rigid means to the bone.
Claim 31
Dependent Claim
17 words
The apparatus of claim 27 including: at least one layer of pyrolite carbon covering the porous means.
Claim 32
Dependent Claim
25 words
The apparatus of claim 27 wherein: porous means is a fabric surrounding the body and bonded thereto, said fabric being separated from the first portion.
Claim 33
Dependent Claim
33 words
The apparatus of claim 29 wherein: the elastic body engages the first and second portions of the rigid means and has a generally uniform thickness around the second portion of the rigid means.
Claim 34
Dependent Claim
17 words
The apparatus of claim 30 including: at least one layer of pyrolite carbon attached to the fabric.
Claim 35
Dependent Claim
31 words
The apparatus of claim 29 wherein: the fabric has an inside surface and the body has an outside surface, said inside surface being bonded to the outside surface of the body.
Claim 36
Dependent Claim
16 words
The apparatus of claim 27 wherein: the rigid means has an outer layer of pyrolite carbon.
Claim 37
Dependent Claim
21 words
The apparatus of claim 27 wherein: the porous means comprises a fabric bonded to the outside surface of the elastic body.
Claim 38
Dependent Claim
16 words
The apparatus of claim 27 including: at least one layer of pyrolite carbon covering the fabric.
Claim 39
Dependent Claim
21 words
The apparatus of claim 27 wherein: the body has a generally uniform thickness around the second portion of the rigid means.
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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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |