Patent US3835540A successfully refreshed from Google Patents.
US3835540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic appliance
Assignee: KENT DENTAL Inc
•
Filing: 1972-12-27
•
Granted: 1974-09-17
•
Expires: 1992-12-27
Abstract
Abstract An orthopedic appliance is provided to open a midpalatal suture quickly and substantially. The appliance includes a metal construction which may be positioned in the patient''s mouth so as to avoid irritation. The construction features a pair of main body sections, each including an oppositely threaded screw bore into which is threadably inserted an adjustment screw having two ends threaded in opposite directions, so that turning of the screw either brings the sections closer together or further apart depending upon the direction of turning. A pair of sectional rods straddle the adjustment screw and each rod is slidably inserted through rod bores running parallel to the threaded screw bore. The sectional construction of the rods enables their action as both slide members as the main body sections are separated and as attachment rods for mounting the appliance on the teeth of the upper jaw.
Inventors
- 👤 W Biederman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:17
CPC Classifications
A; A61; A61C; A61C7/00; A61C7/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
169 words
An orthopedic appliance for spreading the midpalatal suture comprising a main body including first and second main body sections, each defining centrally located adjustment screw bores with the said bore of one section being threaded oppositely to the said bore of the other section, an adjustment screw threadably inserted to said bores and including a handle at approximately its midpoint defining means for manipulation thereof and a pair of rods, said rods extending beyond said main body sections on both sides thereof and said sections each further defining rod bores straddling said centrally located adjustment screw bore such that said rods are slidably inserted to said rod bores and said rods each being in two sections for providing a guiding function for said sections, wherein said spreading is accomplished by a force transmitted through said rods and said appliance is intended for positioning in a patient''s mouth above where there would be tongue interference and yet separated from the patient''s palate, with said rods attachable to the patient''s teeth.
Claim 2
Dependent Claim
169 words
An orthopedic appliance for spreading the midpalatal suture comprising a main body including first and second main body sections, each defining centrally located adjustment screw bores with the said bore of one section being threaded oppositely to the said bore of the other section, an adjustment screw threadably inserted to said bores and including a handle at approximately its midpoint defining means for manipulation thereof and a pair of rods, said rods extending beyond said main body sections on both sides thereof and said sections each further defining rod bores straddling said centrally located adjustment screw bore such that said rods are slidably inserted to said rod bores and said rods each being in two sections for providing a guiding function for said sections, wherein said spreading is accomplished by a force transmitted through said rods and said appliance is intended for positioning in a patient''s mouth above where there would be tongue interference and yet separated from the patient''s palate, with said rods attachable to the patient''s teeth.
Claim 3
Dependent Claim
23 words
The invention according to claim 1 wherein said appliance further includes an adhesive means for attaching each of said rods to said sections.
Claim 4
Dependent Claim
33 words
The invention according to claim 1 wherein said rods are elongated to extend from said appliance outward in both directions a distance equal to the maximum transverse measurement of a human upper jaw.
Claim 5
Dependent Claim
18 words
The invention according to claim 1 wherein said rods are of a diameter between 1.5 and 1.8 millimeters.
Claim 6
Dependent Claim
41 words
The invention according to claim 3 wherein the portions of said rods extending beyond said main body are bent so that said pair of rods are further separated from each other as said rods increase in distance from said main body.
Claim 7
Dependent Claim
23 words
The invention according to claim 1 wherein said rods are attachable to human teeth and therefore include bands affixed to the ends thereof.
Claim 8
Dependent Claim
20 words
The invention according to claim 1 wherein said rods are both split within said rod bores of said first section.
Claim 9
Dependent Claim
35 words
The invention according to claim 1 wherein one of said rods is split within the rod bore of said first section and the other rod is split within the rod bore of said second section.
Claim 10
Dependent Claim
17 words
The invention according to claim 1 wherein said rods are of a diameter greater than 1.5 millimeters.
Claim 11
Dependent Claim
21 words
The invention according to claim 1 wherein said rod bores are threaded and said rods are threaded for threadable attachment therebetween.
References Cited (Backward Citations)
FR1150055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |