US4494535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hip nail
Assignee: Individual
•
Filing: 1981-06-24
•
Granted: 1985-01-22
•
Expires: 2001-06-24
Abstract
Abstract A sliding hip nail implant for fixation of a fractured hip bone is provided with ports in communication with a longitudinal cannula for the introduction of an acrylic cement to stabilize the bone and adhere the nail.
Inventors
- 👤 Armen C. Haig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:40
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/74; A61B17/742; A61B17/746
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
130 words
In a hip fixation nail for treating a fractured hip bone comprising a shank having a head portion at the distal end thereof, the head portion comprising a plurality of flanges separated by fluted areas, the entire length of the nail being cannulated by a bore; an elongated plate, attachable by means of fasteners to said bone, having bore means adjacent one end thereof for cooperatively receiving said shank; the improvement wherein a plurality of ports are located in the fluted areas in communication with the bore adjacent the distal end to allow deposition of a hardenable liquid polymeric material in the area surrounding the head portion but not at the fracture site in the hip bone to form a tighter bond between the nail and the fractured hip bone.
Claim 2
Dependent Claim
130 words
In a hip fixation nail for treating a fractured hip bone comprising a shank having a head portion at the distal end thereof, the head portion comprising a plurality of flanges separated by fluted areas, the entire length of the nail being cannulated by a bore; an elongated plate, attachable by means of fasteners to said bone, having bore means adjacent one end thereof for cooperatively receiving said shank; the improvement wherein a plurality of ports are located in the fluted areas in communication with the bore adjacent the distal end to allow deposition of a hardenable liquid polymeric material in the area surrounding the head portion but not at the fracture site in the hip bone to form a tighter bond between the nail and the fractured hip bone.
Claim 3
Independent Claim
115 words
A method for treating a fractured hip bone comprising inserting into the fractured hip bone the head portion of a hip fixation nail comprising a shank having a head portion at the distal end thereof, the head portion comprising a plurality of flanges separated by fluted areas, the entire length of the nail being cannulated by a bore, a plurality of ports being located in the fluted areas in communication with the bore; injecting through the bore in the nail a hardenable liquid polymeric material into the region surrounding the head portion but not the fracture site; monitoring the cement injection procedure by means of fluoroscopic visual control; and permitting the polymeric material to harden.
Claim 4
Independent Claim
115 words
A method for treating a fractured hip bone comprising inserting into the fractured hip bone the head portion of a hip fixation nail comprising a shank having a head portion at the distal end thereof, the head portion comprising a plurality of flanges separated by fluted areas, the entire length of the nail being cannulated by a bore, a plurality of ports being located in the fluted areas in communication with the bore; injecting through the bore in the nail a hardenable liquid polymeric material into the region surrounding the head portion but not the fracture site; monitoring the cement injection procedure by means of fluoroscopic visual control; and permitting the polymeric material to harden.
Claim 5
Dependent Claim
13 words
The method of claim 2 wherein the polymeric material is an acrylic cement.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |