Patent US5197965A successfully refreshed from Google Patents.
US5197965A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skull clamp pin assembly
Assignee: Integra Lifesciences Corp
•
Filing: 1992-07-29
•
Granted: 1993-03-30
•
Expires: 2012-07-29
Abstract
Abstract A pin assembly for use in a skull clamp having a cylindrical non-metallic housing and a metallic rigid pin with a conical point fitted in the non-metallic housing. The non-metallic housing has fingers extending from a cavity in the surface of the housing and are positioned at an angle towards the pin end of the housing to hold the pin assembly in the skull clamp.
Inventors
- 👤 Joseph A. Cherry
- 👤 Victor B. Agbodoe
- 👤 Raphael F. Meloul
- 👤 Jose E. Lizardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:50
CPC Classifications
A; A61; A61B; A61B90/00; A61B90/10; A61B90/14
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A pin assembly for use in a skull clamp comprising; a cylindrical non-metallic housing having a first end and a second end and having an axially extending bore, said bore having an enlarged diameter at said first end, a plurality of spaced apart circumferential ribs surrounding the bore at said first end, a rigid pin having a conical point at a first end attached to a shank which extends to a second end of the pin, a shoulder portion between the conical point and the shank, an undercut in the shank adjacent the shoulder portion, a step in said shank having a diameter larger than the shank adapted to fit into the enlarged diameter of said bore, at least one transverse cavity in the outer surface of said non-metallic housing, a finger extending from the base of said cavity, said finger being positioned set in said cavity and extending at an angle toward said first end of said housing.
Claim 2
Dependent Claim
159 words
A pin assembly for use in a skull clamp comprising; a cylindrical non-metallic housing having a first end and a second end and having an axially extending bore, said bore having an enlarged diameter at said first end, a plurality of spaced apart circumferential ribs surrounding the bore at said first end, a rigid pin having a conical point at a first end attached to a shank which extends to a second end of the pin, a shoulder portion between the conical point and the shank, an undercut in the shank adjacent the shoulder portion, a step in said shank having a diameter larger than the shank adapted to fit into the enlarged diameter of said bore, at least one transverse cavity in the outer surface of said non-metallic housing, a finger extending from the base of said cavity, said finger being positioned set in said cavity and extending at an angle toward said first end of said housing.
Claim 3
Dependent Claim
13 words
The pin assembly of claim 1 in which the rigid pin is metallic.
Claim 4
Dependent Claim
26 words
The pin assembly of claim 1 in which there are axially extending ribs between circumferential ribs around the bore at said first end of said housing.
Claim 5
Dependent Claim
19 words
The pin assembly of claim 1 in which said finger extends at an angle of between 30° and 60°.
References Cited (Backward Citations)
US4169478A
Cited
US4976712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-29 | 1996-09-28 | 1997-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-29 | 2000-09-28 | 2001-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-29 | 2004-09-28 | 2005-03-30 | $7700.00 | Window Closed / Lapsed |