US4612918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of eliminating canine cauda equina syndrome
Assignee: Cetus Oncology Corp
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Filing: 1984-10-16
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Granted: 1986-09-23
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Expires: 2004-10-16
Abstract
Abstract A method of eliminating canine cauda equina syndrome is disclosed. The method includes the steps of dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with their respective articular facets on S 1 thereby relieving pressure on the nerves passing through the L 7 S 1 juncture. L 7 is fixed relative S 1 by fusing L 7 to S 1 by grafting bones, by anchoring L 7 relative S 1 by inserting a pin through the two vertebrae, or by providing a rearward limit of movement for L 7 . The methods of fixing may be used individually or in combination to eliminate the syndrome.
Inventors
- 👤 Barclay Slocum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:10
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7055; A61D; A61D9/00; A61B2017/7073; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
The method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with their respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 junction, fixing L 7 relative S 1 with the caudal articular processes on L 7 substantially aligned with their respective articular facets on S 1 by inserting a pin through the articular facet on each caudal articular process on L 7 and through the respective articular facet on S 1 , and fusing L 7 to S 1 by laying bone grafts along the dorsal spinus processes and lamina of L 7 and S 1 .
Claim 2
Independent Claim
126 words
The method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with their respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 junction, fixing L 7 relative S 1 with the caudal articular processes on L 7 substantially aligned with their respective articular facets on S 1 by inserting a pin through the articular facet on each caudal articular process on L 7 and through the respective articular facet on S 1 , and fusing L 7 to S 1 by laying bone grafts along the dorsal spinus processes and lamina of L 7 and S 1 .
Claim 3
Dependent Claim
26 words
The method of claim 1, wherein the pins are inserted through each articular facet on S 1 and extended laterally through S 1 to the pelvis.
Claim 4
Dependent Claim
19 words
The method of claim 1, which further includes removing the ligamentum flavum between L 7 and S 1 .
Claim 5
Independent Claim
137 words
A method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with their respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 junction, anchoring L 7 relative S 1 by inserting a pin through the articular facet on each caudal articular process on L 7 and through the respective articular facet on S 1 with the caudal articular processes on L 7 substantially aligned with their respective articular facets on S 1 , extending the pin laterally through S 1 to the pelvis, and laying bone grafts along the dorsal spinus processes and lamina of L 7 and S 1 thereby to fuse L 7 and S 1 .
Claim 6
Independent Claim
137 words
A method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with their respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 junction, anchoring L 7 relative S 1 by inserting a pin through the articular facet on each caudal articular process on L 7 and through the respective articular facet on S 1 with the caudal articular processes on L 7 substantially aligned with their respective articular facets on S 1 , extending the pin laterally through S 1 to the pelvis, and laying bone grafts along the dorsal spinus processes and lamina of L 7 and S 1 thereby to fuse L 7 and S 1 .
Claim 7
Independent Claim
95 words
A method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with the respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 juncture, and inserting screws into the cranial articular processes of S 1 in a position setting a rearward limit of travel for L 7 to prevent rearward movement of the caudal articular processes on L 7 , thereby fixing L 7 relative S 1 .
Claim 8
Independent Claim
95 words
A method of eliminating canine cauda equina syndrome comprising: dorsally separating the sacrum from L 7 , substantially aligning the caudal articular processes on L 7 with the respective articular facets on S 1 , by said aligning, relieving pressure on the nerves passing through the L 7 S 1 juncture, and inserting screws into the cranial articular processes of S 1 in a position setting a rearward limit of travel for L 7 to prevent rearward movement of the caudal articular processes on L 7 , thereby fixing L 7 relative S 1 .
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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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |