Patent US4468201A successfully refreshed from Google Patents.
US4468201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental endosseous implants
Assignee: Individual
•
Filing: 1983-06-13
•
Granted: 1984-08-28
•
Expires: 2003-06-13
Abstract
Abstract An endosseous implant structure for oral implantology, comprising a planar body portion embedded in an alveolar bone to form an artificial tooth root, at least one neck portion extending from one end of the planar body portion in a direction substantially parallel to the plane of the body portion, and at least on head portion extending from one end of the neck portion remote from the body portion and projecting into a oral cavity to form an abutment for an artificial tooth. The planar body portion includes a plurality of leg portions defined by cutouts formed in the body portion. At least the leg portions are made of a metal material exhibiting a thermal shape memory effect of deformation in response to variation in temperature thereof. The leg portions are deformed sidewise and away from the plane of the body portion upon temperature variation after insertion of the body portion into the alveolar bone.
Inventors
- 👤 Sekio Fukuyo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:47
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0018; A61C8/0019; A61C2201/00; A61C2201/007; A61F; A61F2210/00; A61F2210/0014; A61F2210/0019
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
161 words
An endosseous implant structure for oral implantology, comprising: a planar body portion embedded in an alveolar bone to form an artificial tooth root; a least one neck portion extending from one end of said planar body portion in a direction substantially parallel to the plane of the body portion; and at least one head portion extending in said direction from one end of said at least one neck portion remote from said body portion and projecting into a oral cavity to form an abutment for an artificial tooth; said planar body portion including a plurality of leg portions defined by cutouts formed in said body portion, at least said leg portions being made of a metal material exhibiting a thermal shape memory effect of deformation in response to variation in termperature thereof, said leg portions being deformed sidewise, and away from said plane, of said body portion upon the temperature variation after insertion of said body portion into the alveolar bone.
Claim 2
Dependent Claim
161 words
An endosseous implant structure for oral implantology, comprising: a planar body portion embedded in an alveolar bone to form an artificial tooth root; a least one neck portion extending from one end of said planar body portion in a direction substantially parallel to the plane of the body portion; and at least one head portion extending in said direction from one end of said at least one neck portion remote from said body portion and projecting into a oral cavity to form an abutment for an artificial tooth; said planar body portion including a plurality of leg portions defined by cutouts formed in said body portion, at least said leg portions being made of a metal material exhibiting a thermal shape memory effect of deformation in response to variation in termperature thereof, said leg portions being deformed sidewise, and away from said plane, of said body portion upon the temperature variation after insertion of said body portion into the alveolar bone.
Claim 3
Dependent Claim
37 words
An endosseous implant structure as recited in claim 1, wherein said leg portions are thermally displaced normal to said plane of said body portion and in alternately opposite directions so as to move away from each other.
Claim 4
Dependent Claim
37 words
An endosseous implant structure as recited in claim 1, wherein said leg portions assume thermally recoverable memory shapes causing one of a free end and a central part thereof to be displaced sidewise of said body portion.
Claim 5
Dependent Claim
41 words
An endosseous inplant structure as recited in claim 1, wherein said thermal shape memory effect arises when the temperature of said body portion is elevated to a temperature higher than that before said body portion is inserted in the alveolar bone.
Claim 6
Dependent Claim
28 words
An endosseous implant structure as recited in claim 1, wherein said metal material is selected from a group consisting of Ti--Ni, Ni--Al, Cu--Zn, In--Tl, Fe--Pd, Cu--Al--Ni, and Cu--Zn--Al.
Claim 7
Dependent Claim
25 words
An endosseous implant structure as recited in claim 1, which is entirely made of said metal material exhibiting a thermal shape memory effect of deformation.
Claim 8
Dependent Claim
72 words
An endosseous implant structure as recited in claim 1, wherein said planar body portion has a plurality of slots which define a corresponding number of tongues corresponding to said plurality of leg portions, each of said tongues being disposed in parallel to said plane of said body portion prior to said temperature variation, said each tongue being deformed sidewise, and away from said plane, of said body portion upon said temperature variation.
Claim 9
Dependent Claim
30 words
An endosseous implant structure as recited in claim 7, wherein said slots and tongues are aligned with said leg portions in a direction across the width of said body portion.
Claim 10
Dependent Claim
33 words
An endosseous implant structure as recited in claim 8, wherein said at least one head portion is provided in plural number, said leg portions being aligned with the head portions in said direction.
Claim 11
Dependent Claim
33 words
An endosseous implant structure as recited in claim 8, wherein said at least one head portion is provided in plural number, said leg portions being disposed between extension lines of the head portions.
Claim 12
Dependent Claim
25 words
An endosseous implant structure as recited in claim 7, wherein said each tongue has a lower end terminating in respective one of said leg portions.
Claim 13
Dependent Claim
42 words
An endosseous implant structure as recited in claim 11, wherein said tongue is pivoted with said respective leg portion substantially about said lower end of the tongue upon said temperature variation such that said tongue is in line with said leg portion.
Claim 14
Dependent Claim
30 words
An endosseous implant structure as recited in claim 11, wherein said tongue and said respective leg portion diverge from said plane on the same side thereof upon said temperature variation.
Claim 15
Dependent Claim
68 words
An endosseous implant structure as recited in claim 7, wherein said each tongue has an upper fixed end and a lower end extending toward a free end of respective one of said leg portions, at least portions of said body portion adjacent to said upper fixed end of the tongue as well as said leg portions being made of said metal material exhibiting a thermal shape memory effect.
Claim 16
Dependent Claim
36 words
An endosseous implant structure as recited in claim 14, wherein said tongue is deformed, upon said temperature variation, on the side of said body portion opposite to that on which said respective leg portion is deformed.
Claim 17
Dependent Claim
14 words
An endosseous implant structure as recited in claim 7, said slots are generally U-shaped.
References Cited (Backward Citations)
US3729825A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-28 | 1988-02-27 | 1988-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-28 | 1992-02-27 | 1992-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-28 | 1996-02-27 | 1996-08-28 | $7700.00 | Window Closed / Lapsed |