US4802849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rapid mandibular advancement and vertical and lateral development device
Assignee: Individual
•
Filing: 1987-11-27
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Granted: 1989-02-07
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Expires: 2007-11-27
Abstract
Abstract A functional orthodontic appliance which includes permanent magnets embedded in the upper and lower acrylic positioning parts normally positioned behind the incisor teeth of the patient. The magnets are of opposite polarity on the top and bottom parts and positioned so as to influence movement of the patient's mandible into a vertical bite plane. The appliance may also include positioning wires and springs for promoting back tooth eruption corresponding to the change in the bite plane, and lateral expansion screws to promote mouth arch expansion.
Inventors
- 👤 John A. Collins, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:40
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
A functional appliance adapted to be worn in the mouth of a patient adjacent upper and lower rows of teeth, said appliance comprising an upper part for wearing in an upper part of the mouth adjacent the upper teeth and arch, and a lower part for wearing in a lower part of the mouth adjacent the lower teeth and arch, each upper part and lower part including a rigid tooth positioning part located in abutment behind upper and lower incisor teeth in said patient's mouth, flexible metal positioning wires extending rearwardly of each positioning part located adjacent upper and lower molars in said patient's mouth, each positioning part including magnet means for, mating the positioning parts to position said incisor teeth in a substantially vertical bite plane which promotes movement of said mandible into an ideal bite position.
Claim 2
Dependent Claim
138 words
A functional appliance adapted to be worn in the mouth of a patient adjacent upper and lower rows of teeth, said appliance comprising an upper part for wearing in an upper part of the mouth adjacent the upper teeth and arch, and a lower part for wearing in a lower part of the mouth adjacent the lower teeth and arch, each upper part and lower part including a rigid tooth positioning part located in abutment behind upper and lower incisor teeth in said patient's mouth, flexible metal positioning wires extending rearwardly of each positioning part located adjacent upper and lower molars in said patient's mouth, each positioning part including magnet means for, mating the positioning parts to position said incisor teeth in a substantially vertical bite plane which promotes movement of said mandible into an ideal bite position.
Claim 3
Dependent Claim
44 words
The functional appliance of claim 1 wherein said positioning wires are located adjacent an inner side of said molars, said positioning wires including a plurality of wedges extending between said molars and constituting means for separating said teeth to promote eruption of the molars.
Claim 4
Dependent Claim
49 words
The functional appliance of claim 1 wherein said acrylic positioning part includes first and second acrylic pieces joined by an expansion screw, said expansion screw constituting means for adjusting the space between said first and second acrylic positioning parts to promote lateral expansion of said upper and lower arches.
Claim 5
Dependent Claim
49 words
The functional appliance of claim 8 wherein said acrylic positioning part includes first and second acrylic pieces joined by an expansion screw, said expansion screw constituting means for adjusting the space between said first and second acrylic positioning parts to promote lateral expansion of said upper and lower arches.
Claim 6
Dependent Claim
62 words
The functional appliance of claim 1 wherein each positioning part includes a bar extending laterally of each positioning part adjacent an outer surface of said molars, lug means connected to said molar outer surface indirectly connecting said bar to said molars, and spring means connected between said bar and said lug means for urging said upper and lower molars towards each other.
Claim 7
Dependent Claim
83 words
The functional appliance of claim 5 wherein said bar includes first and second vertically speed bar members, one of said first and second bar members detachably connected to said positioning part, said spring means including a flexible metal spring having a first terminal end connected to said first bar member, said spring wrapped about said second bar member and including a second terminal end detachably connected to a said lug means wherein expansion forces exerted by said spring are transferred to said molars.
Claim 8
Dependent Claim
36 words
The functional appliance of claim 5 wherein said upper and lower parts each include clamp means for firmly fastening said appliance to said patient's upper and lower teeth wherein manual removal by the patient is prevented.
Claim 9
Dependent Claim
33 words
The functional appliance of claim 7 wherein said clamp means includes a flange connected to each positioning part, said flange defining an opening through which is fitted restrictively one of said patient's teeth.
Claim 10
Dependent Claim
25 words
The functional appliance of claim 8 wherein said flange further defines a bore, said eruption means including a hook part removably fitted within said base.
Claim 11
Dependent Claim
25 words
The functional appliance of claim 6 and soft protective means overlying each bar member for preventing sharp contact with flexible tissues within the patient's mouth.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-07 | 1992-08-08 | 1993-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-07 | 1996-08-08 | 1997-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-07 | 2000-08-08 | 2001-02-07 | $7700.00 | Window Closed / Lapsed |