US5665087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and screw for repair of olecranon fractures
Assignee: Acumed LLC
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Filing: 1996-03-26
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Granted: 1997-09-09
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Expires: 2016-03-26
Abstract
Abstract A method for repairing fractures of the olecranon including creating a hole in the proximal end of the ulna, where the hole extends from the proximal end of the ulna to the fracture to define a first region, and from the fracture to the proximal end of the medullary canal to define a second region. A screw is selected having a cancellous section and a medullary section extending from the cancellous section. The cancellous section includes a threaded region adjacent the medullary section and the medullary section is adapted to fit into the medullary canal of the ulna. The medullary section is installed into the hole up to the threaded region and the screw is then rotated to drive the threaded region into the hole until the threaded region engages the cancellous bone surrounding the hole in the second region and the medullary section extends substantially into the medullary canal.
Inventors
- 👤 Randall J. Huebner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:51
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/8625; A61B17/863; A61B17/72; A61B17/7216; A61B17/7225; A61B17/8635; A61B17/7233; A61B17/8645
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
219 words
A method for repairing olecranon fractures in the ulna comprising the steps of: creating a hole in the proximal end of the ulna, the hole extending from the proximal end of the ulna to the fracture to define a first region, and from the fracture to the proximal end of the medullary canal to define a second region; selecting a screw having a cancellous section end a medullary section extending from a leading end of the cancellous section to a leading end of the screw, where the cancellous section include a threaded region adjacent the medullary section and the medullary section is adapted to fit into the medullary canal of the ulna, the threaded region being provided with a larger outside diameter than the diameter of the hole in the second region; installing the medullary section into the hole up to the threaded region; and rotating the screw to drive the threaded region into the hole until the threaded region engages the cancellous bone surrounding the hole in the second region, end the medullary section extends from the second region substantially into the medullary canal, where the medullary section is chosen to have a diameter along its entire length that is less than the corresponding diameter of the medullary canal into which the medullary section is adapted to fit.
Claim 2
Independent Claim
219 words
A method for repairing olecranon fractures in the ulna comprising the steps of: creating a hole in the proximal end of the ulna, the hole extending from the proximal end of the ulna to the fracture to define a first region, and from the fracture to the proximal end of the medullary canal to define a second region; selecting a screw having a cancellous section end a medullary section extending from a leading end of the cancellous section to a leading end of the screw, where the cancellous section include a threaded region adjacent the medullary section and the medullary section is adapted to fit into the medullary canal of the ulna, the threaded region being provided with a larger outside diameter than the diameter of the hole in the second region; installing the medullary section into the hole up to the threaded region; and rotating the screw to drive the threaded region into the hole until the threaded region engages the cancellous bone surrounding the hole in the second region, end the medullary section extends from the second region substantially into the medullary canal, where the medullary section is chosen to have a diameter along its entire length that is less than the corresponding diameter of the medullary canal into which the medullary section is adapted to fit.
Claim 3
Dependent Claim
18 words
The method of claim 1 further comprising the step of choosing a screw with an unthreaded medullary section.
Claim 4
Dependent Claim
19 words
The method of claim 1 futher comprising the step of choosing a screw with a fully threaded cancellous section.
Claim 5
Dependent Claim
35 words
The method of claim 3 further comprising the step of choosing a screw where the pitch of the threads in the cancellous section is larger toward the medullary section and smaller in the opposite direction.
Claim 6
Dependent Claim
52 words
The method of claim 1 further comprising the step of choosing a screw where the threaded region is adapted to be substantially coextensive with the second region and the cancellous section includes an unthreaded region adapted to be substantially coextensive with the first region when the screw is installed in the hole.
Claim 7
Dependent Claim
19 words
The method of claim 1, wherein the medullary section is chosen to have a constant diameter along its length.
Claim 8
Independent Claim
198 words
A method for repairing a fracture in a metaphysis at a first end of a long bone having a medullary canal comprising the steps of: selecting a screw having a cancellous section and a medullary section extending from a leading end of the cancellous section to a leading end of the screw, where the cancellous section includes a threaded region adjacent the medullary section and the medullary section is adapted to fit into the medullary canal of the bone; inserting the medullary section into the bone up to the threaded region of the screw, where the medullary section is inserted from the fast end of the bone through metaphysis toward the medullary canal; and rotating the screw to drive the threaded region into the bone until the threaded region engages the cancellous bone in a distal portion of the metaphysis between the fracture and the medullary canal, and the medullary section extends from the distal portion of the metaphysis substantially into the medullary canal, where the medullary section is chosen to have a diameter along its entire length that is less than the corresponding diameter of the medullary canal into which the medullary section is adapted to fit.
Claim 9
Independent Claim
198 words
A method for repairing a fracture in a metaphysis at a first end of a long bone having a medullary canal comprising the steps of: selecting a screw having a cancellous section and a medullary section extending from a leading end of the cancellous section to a leading end of the screw, where the cancellous section includes a threaded region adjacent the medullary section and the medullary section is adapted to fit into the medullary canal of the bone; inserting the medullary section into the bone up to the threaded region of the screw, where the medullary section is inserted from the fast end of the bone through metaphysis toward the medullary canal; and rotating the screw to drive the threaded region into the bone until the threaded region engages the cancellous bone in a distal portion of the metaphysis between the fracture and the medullary canal, and the medullary section extends from the distal portion of the metaphysis substantially into the medullary canal, where the medullary section is chosen to have a diameter along its entire length that is less than the corresponding diameter of the medullary canal into which the medullary section is adapted to fit.
Claim 10
Dependent Claim
17 words
The method of claim 7, wherein the threaded region extends over substantially all of the cancellous section.
Claim 11
Dependent Claim
26 words
The method of claim 8, wherein the cancellous section includes a head at the trailing end adapted to compress against the first end of the bone.
Claim 12
Dependent Claim
23 words
The method of claim 8, wherein the threaded region has larger pitch near the leading end and smaller pitch toward the trailing end.
Claim 13
Dependent Claim
26 words
The method of claim 10, wherein the threaded region has an outside diameter that is larger near the trailing end and smaller near the leading end.
Claim 14
Dependent Claim
31 words
The method of claim 11, wherein the outside diameter of the threaded region near the trailing end is at least equal to the largest diameter of any portion of the screw.
Claim 15
Dependent Claim
34 words
The method of claim 7, wherein the cancellous section includes an unthreaded region near the trailing end and a head at the trailing end adapted to compress against the first end of the bone.
Claim 16
Dependent Claim
14 words
The method of claim 7, wherein the medullary section is 2-4 millimeters in diameter.
Claim 17
Dependent Claim
13 words
The method of claim 7, wherein the medullary section is 23-80 millimeters long.
Claim 18
Dependent Claim
16 words
The method of claim 7, wherein the medullary section has a constant diameter along its length.
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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) | 2000-09-08 | 2001-03-10 | 2001-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-09-08 | 2005-03-10 | 2005-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-09-08 | 2009-03-10 | 2009-09-09 | $7700.00 | Window Closed / Lapsed |