US5057013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental cortical plate perforator
Assignee: Individual
•
Filing: 1988-05-02
•
Granted: 1991-10-15
•
Expires: 2008-05-02
Abstract
Abstract A dental apparatus for perforating the cortical plate of human maxillary and mandibular bones comprises a solid metal needle moulded into a plastic shank, the shank being formed with means for cooperation with a dental contra-angle or straight handpiece into which the shank may be inserted. The shank has a collar at its front end, and a hollow protective cap is removably fitted over the exposed needle and engages the collar.
Inventors
- 👤 Frank J. Dillon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
A; A61; A61C; A61C19/00; A61C19/06; A61C19/08; A61B; A61B17/00; A61B17/34; A61B17/3472; A61C3/00; A61C3/02; A61B90/00; A61B90/03; A61B2090/033; A61B2090/036
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
65 words
A dental apparatus for perforating the cortical plate of human maxillary and mandibular bones, comprising a solid metal needle fixed in a shank, the shank being formed with means for cooperation with and fixing of the shank into a dental handpiece, the shank having a collar at its front end, and a hollow protective cap removably fitted over the exposed needle and engaging the collar.
Claim 2
Dependent Claim
65 words
A dental apparatus for perforating the cortical plate of human maxillary and mandibular bones, comprising a solid metal needle fixed in a shank, the shank being formed with means for cooperation with and fixing of the shank into a dental handpiece, the shank having a collar at its front end, and a hollow protective cap removably fitted over the exposed needle and engaging the collar.
Claim 3
Dependent Claim
41 words
An apparatus to claim 1, wherein the shank has a further collar at its front end behind the firstmentioned collar, the further collar serving to abut against the front end of a dental handpiece into which the shank may be inserted.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 1, wherein the needle has a bevelled free end.
Claim 5
Dependent Claim
15 words
An apparatus according to claim 3, wherein the needle is of approximately 27 gauge thickness.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 1, wherein the shank is of moulded plastics material and the rear end of the needle is moulded into the shank.
Claim 7
Independent Claim
98 words
A method of perforating the cortical plate of human maxillary and mandibular bones in dental treatment, comprising providing a sterile solid metal needle fixed in a shank, the shank being formed with means for cooperation with and fixing of the shank into a dental handpiece, the shank having a collar at its front end, and a hollow protective cap removably fitted over the exposed needle and engaging the collar, inserting and fixing the shank into a dental handpiece, removing the protective cap, placing the needle against the cortical plate, and perforating the cortical plate by rotating the needle.
Claim 8
Independent Claim
98 words
A method of perforating the cortical plate of human maxillary and mandibular bones in dental treatment, comprising providing a sterile solid metal needle fixed in a shank, the shank being formed with means for cooperation with and fixing of the shank into a dental handpiece, the shank having a collar at its front end, and a hollow protective cap removably fitted over the exposed needle and engaging the collar, inserting and fixing the shank into a dental handpiece, removing the protective cap, placing the needle against the cortical plate, and perforating the cortical plate by rotating the needle.
References Cited (Backward Citations)
US3534476A
Cited
US4021917A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-10-14 | 1995-04-15 | 1995-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-14 | 1999-04-15 | 1999-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-14 | 2003-04-15 | 2003-10-15 | $7700.00 | Window Closed / Lapsed |