Patent US3350695A successfully refreshed from Google Patents.
US5501685A
Expired / Lapsed
US
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Method for securing a cranial piece in position
Assignee: Individual
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Filing: 1994-04-26
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Granted: 1996-03-26
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Expires: 2014-04-26
Abstract
Abstract A device for securing a previously removed cranial plate in position in a cranium to prevent relative movement between opposing bone edges includes a pin containing distal and proximal shanks having ends tapering to a relatively sharp point. The shanks are arranged preferably symmetrically about a central collar which has a dimension transverse to the longitudinal axis of the shanks greater than the diameters of the shanks so that the collar forms distal and proximal opposing shoulders for limiting the insertion depth of the pin.
Inventors
- 👤 Robert F. Spetzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/688; A61B17/28; A61B17/2812; A61B17/282; A61B17/88; A61B17/8872; A61B17/92; A61B2017/922; A61F; A61F2/00; A61F2/02; A61F2/28; A61F2/2875
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
171 words
A method for replacing and securing a cranial plate in position in a cranial opening to prevent the cranial piece from shifting from adjacent cranium bone edges, the method comprising the steps of: (a) positioning over a medullar portion of the cranial plate a surgical pin comprising distal and proximal shanks having ends tapering to a relatively sharp point, said shanks being arranged about a central collar having a dimension transverse to the longitudinal axis of the shanks greater than the diameters of the shanks so that the collar forms distal and proximal opposing shoulders for limiting the insertion depth of the pin; (b) inserting the distal tapered shank of the pin into the medullar portion of the cranial plate so that the distal collar shoulder rests against the medullar portion of the cranial plate; and (c) inserting the proximal tapered shank of the pin into a medullar portion of the adjacent cranium bone edge so that the proximal collar shoulder rests against the medullar portion of the cranium bone edge.
Claim 2
Independent Claim
171 words
A method for replacing and securing a cranial plate in position in a cranial opening to prevent the cranial piece from shifting from adjacent cranium bone edges, the method comprising the steps of: (a) positioning over a medullar portion of the cranial plate a surgical pin comprising distal and proximal shanks having ends tapering to a relatively sharp point, said shanks being arranged about a central collar having a dimension transverse to the longitudinal axis of the shanks greater than the diameters of the shanks so that the collar forms distal and proximal opposing shoulders for limiting the insertion depth of the pin; (b) inserting the distal tapered shank of the pin into the medullar portion of the cranial plate so that the distal collar shoulder rests against the medullar portion of the cranial plate; and (c) inserting the proximal tapered shank of the pin into a medullar portion of the adjacent cranium bone edge so that the proximal collar shoulder rests against the medullar portion of the cranium bone edge.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the distal and proximal shanks are cylindrical and of approximately equal lengths and diameters.
Claim 4
Dependent Claim
35 words
The method of claim 2 wherein the taper of the distal and proximal shanks is in the range of from approximately 0.4 millimeter per millimeter of length, to approximately 0.2 millimeter per millimeter of length.
References Cited (Backward Citations)
US827392A
Cited
US1189998A
Cited
US1710891A
Cited
US2672861A
Cited
FR1392574A
Cited
US3693496A
Cited
US4516569A
Cited
US4554914A
Cited
US4629463A
Cited
US4938768A
Cited
US4858601A
Cited
US4858603A
Cited
JPH04114657A
Cited
US5257995A
Cited
US5207712A
Cited
US5380338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-26 | 1999-09-25 | 2000-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-26 | 2003-09-25 | 2004-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-26 | 2007-09-25 | 2008-03-26 | $7700.00 | Window Closed / Lapsed |