Patent US4483674A successfully refreshed from Google Patents.
US4483674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for orthodontic tooth regulation
Assignee: Individual
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Filing: 1983-04-26
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Granted: 1984-11-20
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Expires: 2003-04-26
Abstract
Abstract The invention refers to a device for orthodontic tooth regulation by means of fixed regulating appliances (Edgewise technique). Through such fixed appliances the teeth will be moved under control along a regulating archwire which is ligated to the brackets which are fixed to the teeth. In order to control the forces transmitted to the teeth to be moved and to avoid overload of the periodontal apparatus, it is proposed according to the invention to insert regulating screws along the regulating archwire between fixed parts (such as brackets or tubes) of the regulating appliance, which can be adjusted in their length. The regulating arch is preferably provided partly with a thread, to which regulating nuts can be screwed on. Using such regulating screws as force elements, the force transmitted to the teeth can be measured in a way that the teeth will be moved within a physiological frame. Treatment time for tooth regulation with such regulating screws can be reduced considerably in comparison with common methods using spring loops, coil springs or elastics.
Inventors
- 👤 Winfried Schutz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:14
CPC Classifications
A; A61; A61C; A61C7/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
147 words
A device for orthodontic regulation of the position of teeth along the curve of a jawbone comprising a fixed regulating appliance having brackets for bonding to the surface of each of said teeth, each bracket having a rectangular opening, a relatively rigid rectangular regulating archwire fixed at each end to a said bracket while being slidably guided in the openings of other said brackets, and an elongate force element supported on the regulating archwire between two of said brackets and disposed to transmit moving forces on the teeth to be regulated, the force element consisting of mating screw elements to provide adjustment of its length, the force element being fixed at its ends to two different brackets, so that by adjusting the length of the force element the teeth will be guided under control along the archwire into a desired position along said curve of said jawbone.
Claim 2
Independent Claim
147 words
A device for orthodontic regulation of the position of teeth along the curve of a jawbone comprising a fixed regulating appliance having brackets for bonding to the surface of each of said teeth, each bracket having a rectangular opening, a relatively rigid rectangular regulating archwire fixed at each end to a said bracket while being slidably guided in the openings of other said brackets, and an elongate force element supported on the regulating archwire between two of said brackets and disposed to transmit moving forces on the teeth to be regulated, the force element consisting of mating screw elements to provide adjustment of its length, the force element being fixed at its ends to two different brackets, so that by adjusting the length of the force element the teeth will be guided under control along the archwire into a desired position along said curve of said jawbone.
Claim 3
Dependent Claim
27 words
The device according to claim 1 wherein the mating screw elements comprise a nut having an internal thread and a thread fixedly associated with said regulating archwire.
Claim 4
Dependent Claim
53 words
The device according to claim 1 wherein the force element has two slidable pieces, each one rigidly connected with a threaded nut, to slidingly engage the regulating archwire, and a threaded pin, said threaded nuts and said threaded pin together forming a turnbuckle operable to adjust the distance between the two slidable pieces.
Claim 5
Dependent Claim
52 words
The device according to claim 1 wherein the screw elements comprise a threaded nut and a mating threaded pin, one of the screw elements being fastened to said bracket of the regulating appliance, the other of the screw elements being a rotatable support for tension applying means fastened to a said bracket.
Claim 6
Dependent Claim
38 words
The device according to claim 1 wherein one of the screw elements is a circumferentially interrupted thread formed on corners of the regulating archwire and the other screw element is a nut threaded to engage said interrupted thread.
Claim 7
Dependent Claim
20 words
The device according to claim 1 wherein the interrupted thread is cut into all four corners of the regulating archwire.
Claim 8
Dependent Claim
17 words
The device according to claim 5 wherein each interrupted thread spans an arc segment of approximately 30°.
Claim 9
Dependent Claim
29 words
The device according to claim 5 wherein the interrupted thread is cut into the regulating archwire only in the corners of the archwire which, in use, faces the teeth.
Claim 10
Dependent Claim
55 words
The device according to claim 8 wherein the regulating archwire has on the side lying opposite to the corners with the interrupted thread a cross section which is a sector of a circle with a diameter corresponding to the thread diameter of the nut, said sector bearing an interrupted thread to engage said nut thread.
Claim 11
Dependent Claim
45 words
The device according to claim 5 wherein a resilient guide shoe can be set on the regulating archwire adjacent said brackets of the regulating archwire adjacent said brackets of the regulating appliance in order to facilitate sliding movement between the regulating archwire and said bracket.
Claim 12
Dependent Claim
28 words
The device according to claim 10 wherein the guide shoe has a strip-like middle part as well as a clamp, to embrace the regulating archwire on each end.
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Cited
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Cited
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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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |