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US5133719A
Expired / Lapsed
US
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Disk plow and methods therefor
Assignee: Individual
•
Filing: 1991-06-27
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Granted: 1992-07-28
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Expires: 2011-06-27
Abstract
Abstract A medical instrument for engaging a fragment of disk tissue located anterior to the spinal cord and between two vertebrae which comprises an elongated handle member having first and second ends, and a slender curved member extending from the second end of the handle, with the slender curved member terminating in a blunt tip, which blunt tip is employed for engaging the disk tissue fragment. Preferably, the slender curved member has a radius of curvature of about 0.24", a thickness dimension of about 0.1", and is oriented with respect to the handle member at an angle of about 82.5°. It is further preferable that the blunt tip have a concavedly cylindrical surface with a radius of curvature of about 0.75", a width dimension in a plane parallel to its radius of curvature of about 0.38", and extend from the slender curved member by about 0.62 inches.
Inventors
- 👤 Frederick Winston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/30; A61B17/32; A61B17/320016; A61B17/02; A61B17/0218; A61B17/28; A61B17/29; A61B17/00234; A61B2017/00238; A61B2017/00261; A61B90/00; A61B90/08; A61B2090/0817; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
87 words
A medical instrument for engaging a fragment of disk tissue located anterior to a spinal cord and between two vertebrae comprising: an elongated handle member having first and second ends, and a slender curved member extending from said second end of said handle member, said slender curved member terminating in a blunt tip for engaging said disk tissue fragment; said handle member tapering gradually to said slender curved member, said slender curved member having a radius of curvature ranging from about 0.2 inches to about 0.3 inches.
Claim 2
Dependent Claim
87 words
A medical instrument for engaging a fragment of disk tissue located anterior to a spinal cord and between two vertebrae comprising: an elongated handle member having first and second ends, and a slender curved member extending from said second end of said handle member, said slender curved member terminating in a blunt tip for engaging said disk tissue fragment; said handle member tapering gradually to said slender curved member, said slender curved member having a radius of curvature ranging from about 0.2 inches to about 0.3 inches.
Claim 3
Dependent Claim
20 words
The medical instrument of claim 1 wherein said slender curved member has a radius of curvature of about 0.24 inches.
Claim 4
Dependent Claim
24 words
The medical instrument of claim 1 wherein said slender curved member has a thickness dimension ranging from about 0.05 inches to about 0.2 inches.
Claim 5
Dependent Claim
29 words
The medical instrument of claim 3 wherein said slender curved member is oriented with respect to said handle member at an angle ranging from about 70° to about 90°.
Claim 6
Dependent Claim
35 words
The medical instrument of claim 4 wherein said blunt tip has a disk tissue fragment engaging concavedly cylindrical surface, said surface having a radius of curvature ranging from about 0.6 inches to about 0.9 inches.
Claim 7
Dependent Claim
36 words
The medical instrument of claim 5 wherein said blunt tip has a width dimension in a plane parallel to said radius of curvature of said cylindrical surface ranging from about 0.2 inches to about 0.5 inches.
Claim 8
Dependent Claim
32 words
The medical instrument of claim 6 wherein a forward edge of said blunt tip extends from said slender curved member by an amount ranging from about 0.5 inches to about 0.7 inches.
Claim 9
Dependent Claim
31 words
The medical instrument of claim 5 wherein said blunt tip has a width dimension in a plane parallel to said radius of curvature of said cylindrical surface of about 0.38 inches.
Claim 10
Dependent Claim
24 words
The medical instrument of claim 6 wherein a forward edge of said blunt tip extends from said slender curved member by about 0.62 inches.
Claim 11
Dependent Claim
30 words
The medical instrument of claim 4 wherein said blunt tip has a disk tissue fragment engaging concavedly cylindrical surface, said surface having a radius of curvature of about 0.75 inches.
Claim 12
Dependent Claim
25 words
The medical instrument of claim 3 wherein said slender curved member is oriented with respect to said handle member at an angle of about 82.5°.
Claim 13
Dependent Claim
19 words
The medical instrument of claim 1 wherein said slender curved member has a thickness dimension of about 0.1 inches.
Claim 14
Dependent Claim
85 words
A medical instrument for engaging a fragment of disk tissue located anterior to a spinal cord and between two vertebrae comprising: an elongated handle member having first and second ends, and a slender curve member extending from said second end of said handle member at an angle from about 70 degrees to 90 degrees, said slender curve member terminating in a blunt tip, said blunt tip having a thickness from about 0.2 to about 0.5 generally concavedly cylindrical surface for engaging said disk tissue fragment.
Claim 15
Dependent Claim
85 words
A medical instrument for engaging a fragment of disk tissue located anterior to a spinal cord and between two vertebrae comprising: an elongated handle member having first and second ends, and a slender curve member extending from said second end of said handle member at an angle from about 70 degrees to 90 degrees, said slender curve member terminating in a blunt tip, said blunt tip having a thickness from about 0.2 to about 0.5 generally concavedly cylindrical surface for engaging said disk tissue fragment.
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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) | 1995-07-28 | 1996-01-27 | 1996-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-28 | 2000-01-27 | 2000-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-28 | 2004-01-27 | 2004-07-28 | $7700.00 | Window Closed / Lapsed |