US5057110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intramedullar nail
Assignee: Johnson and Johnson
•
Filing: 1989-11-29
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Granted: 1991-10-15
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Expires: 2009-11-29
Abstract
Abstract An intramedullar nail for the treatment of fractures of long tubular bones, made of a shaft having a nail tip and at least one fixation screw. A portion of the nail tip is made of absorbable material. The fixation screws penetrate the bone and a section of the nail, causing the bone and nail to be attached.
Inventors
- 👤 Curt Kranz
- 👤 Hanns Seiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/72
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
58 words
An intramedullar nail, having a tip section constituting the tip of the nail for operative treatment of fractures of a long tubular bone, the nail being fixable by means of fixation screws, said nail tip section consisting of an absorbable material, said tip section having fixation screws passing therethrough in order to attach the nail to the bone.
Claim 2
Dependent Claim
58 words
An intramedullar nail, having a tip section constituting the tip of the nail for operative treatment of fractures of a long tubular bone, the nail being fixable by means of fixation screws, said nail tip section consisting of an absorbable material, said tip section having fixation screws passing therethrough in order to attach the nail to the bone.
Claim 3
Dependent Claim
21 words
An intramedullar nail as defined in claim 1, wherein at least one of said fixation screws consist of an absorbable material.
Claim 4
Dependent Claim
14 words
An intrameddular nail as defined in claim 1, wherein said absorbable material is polylactid.
Claim 5
Dependent Claim
30 words
An intrameddullar nail as defined in claim 1, wherein the nail has a metallic head, further comprising a cover which connects the nail tip firmly with the metallic nail head.
Claim 6
Dependent Claim
25 words
An intramedullar nail as defined in claim 4, wherein said cover consists of a member of the group consisting of titanium and a titanium alloy.
Claim 7
Dependent Claim
26 words
An intramedullar nail as defined in claim 1, wherein the absorbable nail tip section ends directly above an area in which said fixation screws are inserted.
Claim 8
Dependent Claim
21 words
An intramedullar nail as defined in claim 1, wherein said nail has a concentric bore which extends throughout its whole length.
Claim 9
Dependent Claim
32 words
An intramedullar nail, having a tip section constituting the tip of the nail for operative treatment of fractures of a long tubular bone, said nail tip section consisting of an absorbable material.
Claim 10
Dependent Claim
32 words
An intramedullar nail, having a tip section constituting the tip of the nail for operative treatment of fractures of a long tubular bone, said nail tip section consisting of an absorbable material.
Claim 11
Dependent Claim
51 words
An intramedullar nail for operative treatment of fractures of a long tubular bone, comprising a shaft having a nail tip, said nail having a tip section consisting of absorbable material and at least one fixation screw which penetrates the bone and said tip section, whereby the bone and nail are attached.
Claim 12
Dependent Claim
51 words
An intramedullar nail for operative treatment of fractures of a long tubular bone, comprising a shaft having a nail tip, said nail having a tip section consisting of absorbable material and at least one fixation screw which penetrates the bone and said tip section, whereby the bone and nail are attached.
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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) | 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 |