US5006070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental implant with y-shaped body
Assignee: Individual
•
Filing: 1989-09-07
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Granted: 1991-04-09
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Expires: 2009-09-07
Abstract
Abstract A dental implant comprises a Y-shaped body including three planar legs which have respective openings defined centrally in sides thereof and extend radially as viewed from above, and a head supported on the body and adapted to be capped by an artificial tooth. The three legs which extend radially outwardly allow the body to be firmly anchored in an alveolar bone of the patient. After the body has been embedded in a groove defined in the alveolar bone, the alveolar bone grows and is joined together through the openings in the legs. As a result, the embedded body becomes more and more secure with time.
Inventors
- 👤 Shigeru Komatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:54
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0019; A61C8/0048; A61C8/005
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A dental implant comprising: a body including three planar legs extending radially as viewed from above, each of said legs having an opening defined centrally therein with said centrally defined openings being in communication with each other such that the legs define a peripheral frame about a central cavity; and wherein each of said legs has a tapered foot that extends downwardly and terminates in a downwardly pointed tip at a lower end remote from a head; and the head supported on said body and adapted to be capped by an artificial tooth.
Claim 2
Dependent Claim
93 words
A dental implant comprising: a body including three planar legs extending radially as viewed from above, each of said legs having an opening defined centrally therein with said centrally defined openings being in communication with each other such that the legs define a peripheral frame about a central cavity; and wherein each of said legs has a tapered foot that extends downwardly and terminates in a downwardly pointed tip at a lower end remote from a head; and the head supported on said body and adapted to be capped by an artificial tooth.
Claim 3
Dependent Claim
17 words
A dental implant according to claim 1, wherein said legs are angularly spaced at equal angular intervals.
Claim 4
Dependent Claim
15 words
A dental implant according to claim 1, wherein said head is of a frustoconical shape.
Claim 5
Dependent Claim
67 words
A dental implant according to claim 1, wherein said head has an upper smaller-diameter portion, a lower larger-diameter portion which is larger in diameter than said upper smaller-diameter portion, and a positioning step disposed between said upper smaller-diameter portion and said lower larger-diameter portion, said positioning step being adapted to abut against the bottom of the artificial tooth when said head is capped by the artificial tooth.
Claim 6
Dependent Claim
38 words
A dental implant according to claim 4, wherein said head is supported on an upper central end of said body by means of a neck which is smaller in diameter than said lower larger-diameter portion of said head.
Claim 7
Dependent Claim
64 words
A dental implant according to claim 1, wherein said head and said body are separate from each other, said head having an externally threaded rod joined to a lower end thereof, said body having an internally threaded boss in an upper central portion thereof, said head being detachably supported on said body with said externally threaded rod being threaded in said internally threaded boss.
Claim 8
Dependent Claim
18 words
A dental implant according to claim 1, wherein said body and said head are made of pure titanium.
Claim 9
Dependent Claim
19 words
A dental implant according to claim 1, wherein said body and said head are formed integrally as a unit.
Claim 10
Dependent Claim
38 words
A dental implant according to claim 1, wherein said head has a safety stop formed on the lower end thereof for holding said body within the dense bone of the alveolar bone when said implant is in position.
Claim 11
Dependent Claim
117 words
A dental implant comprising: a pair of bodies each including three planar legs having respective openings defined centrally in sides thereof and extending radially as viewed from above; said centrally defined openings being in communication with each other such that the legs define a peripheral frame about a central cavity; wherein each of said legs has a tapered foot that extends downwardly and terminates in a downwardly pointed tip at a lower end remote from a head; the head supported on each of said bodies and adapted to be capped by an artificial tooth; and a joint member interconnecting one of said legs of one of said bodies and one of said legs of the other body.
Claim 12
Dependent Claim
117 words
A dental implant comprising: a pair of bodies each including three planar legs having respective openings defined centrally in sides thereof and extending radially as viewed from above; said centrally defined openings being in communication with each other such that the legs define a peripheral frame about a central cavity; wherein each of said legs has a tapered foot that extends downwardly and terminates in a downwardly pointed tip at a lower end remote from a head; the head supported on each of said bodies and adapted to be capped by an artificial tooth; and a joint member interconnecting one of said legs of one of said bodies and one of said legs of the other body.
Claim 13
Dependent Claim
31 words
A dental implant according to claim 10, further including at least one head supported on an upper edge of said joint member and adapted to be capped by an artificial cap.
Claim 14
Dependent Claim
70 words
A dental implant according to claim 10, wherein each of said heads and each of said bodies are separate from each other, each said head having an externally threaded rod joined to a lower end thereof, each said body having an internally threaded boss in an upper central portion thereof, said head being detachably supported on said body with said externally threaded rod being threaded in said internally threaded boss.
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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) | 1994-04-08 | 1994-10-08 | 1995-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-08 | 1998-10-08 | 1999-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-08 | 2002-10-08 | 2003-04-09 | $7700.00 | Window Closed / Lapsed |