US5791902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill bit for producing bone cavities for dental implants
Assignee: Individual
•
Filing: 1996-09-30
•
Granted: 1998-08-11
•
Expires: 2016-09-30
Abstract
Abstract A drill bit for producing bone cavities for dental implants having a shaft which is indexable in a dental drill handpiece and a cutting head for removal of the bone tissue. Between the shaft and the cutting head, a bit body is provided whose cross section has reduced dimensions by comparison with the bone cavity formed by the cutting head.
Inventors
- 👤 Nikola Lauks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:23
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0089; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1673
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
159 words
A drill bit for producing bone cavities for receiving dental implants, said drill bit comprising: a shaft indexable in a drill to be driven thereby; an elongated body secured to said shaft at one end of said body; a flange formed between said body and said shaft and dimensioned to be rotatably received in a drilling sleeve template for guiding the bit; and a rounded blade cutting head secured to another end of said body opposite said shaft and dimensioned to drill a dental-implant cavity in bone of a patient, said body having a cross section of transverse dimensions less than corresponding dimensions of the drilled cavity, said cutting head extending over a length of said drill bit which is substantially shorter than said body and projecting transversely beyond a transverse cross section of said body, said shaft, said flange and said body being traversed by a flushing passage having outlets formed in said body and at said head.
Claim 2
Dependent Claim
159 words
A drill bit for producing bone cavities for receiving dental implants, said drill bit comprising: a shaft indexable in a drill to be driven thereby; an elongated body secured to said shaft at one end of said body; a flange formed between said body and said shaft and dimensioned to be rotatably received in a drilling sleeve template for guiding the bit; and a rounded blade cutting head secured to another end of said body opposite said shaft and dimensioned to drill a dental-implant cavity in bone of a patient, said body having a cross section of transverse dimensions less than corresponding dimensions of the drilled cavity, said cutting head extending over a length of said drill bit which is substantially shorter than said body and projecting transversely beyond a transverse cross section of said body, said shaft, said flange and said body being traversed by a flushing passage having outlets formed in said body and at said head.
Claim 3
Dependent Claim
15 words
The drill bit defined in claim 1 wherein said body has a polygonal cross section.
Claim 4
Dependent Claim
22 words
The drill bit defined in claim 1 wherein said body has adjacent said head a bevel converging inwardly away from said head.
Claim 5
Dependent Claim
15 words
The drill bit defined in claim 1 wherein said body has a round cross section.
Claim 6
Dependent Claim
25 words
The drill bit defined in claim 1 wherein said body is provided with a succession of drilling-depth marking rings along a length of the body.
Claim 7
Dependent Claim
29 words
The drill bit defined in claim 1 wherein said outlet formed at said head is provided in a region of said head turned away from a cutting edge thereof.
Claim 8
Dependent Claim
32 words
The drill bit defined in claim 1 wherein said cutting head has a configuration and dimensions conforming substantially to a configuration and dimensions of an implant to be inserted in said cavity.
Claim 9
Dependent Claim
32 words
The drill bit defined in claim 1 which is part of a set of drill bits configured for successive use for stepwise enlargement of the cavity to ultimately accommodate a dental implant.
References Cited (Backward Citations)
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US4511334A
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US4820156A
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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) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |