Patent EP0737450A1 successfully refreshed from Google Patents.
US4433676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-adjusting spinal scoliosis fusion hook
Assignee: Individual
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Filing: 1982-03-29
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Granted: 1984-02-28
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Expires: 2002-03-29
Abstract
Abstract This invention relates to a medical device, namely a novel clip to be used in conjunction with a Harrington rod for the treatment of spinal disorders. The hook has a body portion with a housing at one end thereof, with a hooked portion at the opposite end. A sleeve is inserted through and is retained in a channel which extends through the housing by a retaining means. Using this clip, it is possible to spread the load over more than one lamina as more than one hook may be used in the procedure. This thus allows a patient to be mobile without external support immediately following surgery which has been impossible with the prior art devices.
Inventors
- 👤 Kevin A. Bobechko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:30
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7056
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
80 words
A hook for use with a rod for the treatment of spinal disorders, said hook comprising: a body portion having a housing portion at one end, a hooked portion at the other end, said housing portion having a channel therethrough; a sleeve adapted to be inserted and retained in said channel; and retaining means to retain said sleeve in said channel, said retaining means comprising a C-shaped locking ring inserted on said sleeve to retain said sleeve in said channel.
Claim 2
Dependent Claim
80 words
A hook for use with a rod for the treatment of spinal disorders, said hook comprising: a body portion having a housing portion at one end, a hooked portion at the other end, said housing portion having a channel therethrough; a sleeve adapted to be inserted and retained in said channel; and retaining means to retain said sleeve in said channel, said retaining means comprising a C-shaped locking ring inserted on said sleeve to retain said sleeve in said channel.
Claim 3
Dependent Claim
14 words
A hook as claimed in claim 1 wherein said channel is elliptical in shape.
Claim 4
Dependent Claim
14 words
A hook as claimed in claim 2 wherein said sleeve is cylindrical in shape.
Claim 5
Dependent Claim
27 words
A hook as claimed in claim 3 wherein said sleeve has a first retaining lip on one surface and a second retaining lip on the opposite surface.
Claim 6
Dependent Claim
19 words
A hook as claimed in claim 4 wherein said first retaining lip is truncated along two opposite sides thereof.
Claim 7
Dependent Claim
45 words
A hook as claimed in claim 5 wherein the outer diameter of the second retaining lip is greater than the width of said channel, and the outer diameter of said first retaining lip across said truncated sides is less than the width of said channel.
Claim 8
Dependent Claim
51 words
A hook as claimed in claim 6 wherein the length of said sleeve is greater than the length of said channel, and said C-shaped locking ring is inserted on said sleeve between said first retaining lip and the top of said housing portion when said sleeve is inserted through said channel.
Claim 9
Dependent Claim
18 words
A hook as claimed in claim 8 wherein the interior surface of said sleeve has a ridge thereon.
Claim 10
Dependent Claim
19 words
A hook as claimed in claim 8 wherein said ridge is at approximately one-half the length of said sleeve.
Claim 11
Dependent Claim
22 words
A hook as claimed in claim 1 wherein said body portion, said sleeve and said retaining means are made of stainless steel.
Claim 12
Dependent Claim
17 words
A hook as claimed in claim 2 wherein said housing portion has a substantially flat upper surface.
Claim 13
Dependent Claim
16 words
A hook as claimed in claim 1 wherein said hooked portion is a substantially U-shaped hook.
Claim 14
Dependent Claim
23 words
A hook as claimed in claim 12 wherein the height of said hook is marginally greater than the height of said housing portion.
Claim 15
Dependent Claim
209 words
A hook for use with a Harrington rod for the treatment of spinal disorders, said hook comprising: a stainless steel body portion having a housing portion with a flat, upper surface, at one end, and a substantially U-shaped hook at the other end, the height of the hook being greater than the height of said housing portion, said housing portion having an elliptically-shaped channel therethrough; a cylindrical, stainless steel sleeve adapted to be inserted and retained in said channel, said sleeve having a first retaining lip on one surface and a second retaining lip on the opposite surface, said first retaining lip being truncated along two opposite sides, the outer diameter of the second retaining lip being greater than the width of said channel, and the outer diameter of said first retaining lip across said truncated sides being less than the width of said channel, the length of said sleeve being greater than the length of said channel; a ridge on the interior surface of said sleeve at approximately one-half the length of said sleeve; a stainless steel, resilient C-shaped locking ring adapted to be inserted on said sleeve between said first retaining lip and the top of said housing portion when said sleeve is inserted through said channel.
Claim 16
Dependent Claim
209 words
A hook for use with a Harrington rod for the treatment of spinal disorders, said hook comprising: a stainless steel body portion having a housing portion with a flat, upper surface, at one end, and a substantially U-shaped hook at the other end, the height of the hook being greater than the height of said housing portion, said housing portion having an elliptically-shaped channel therethrough; a cylindrical, stainless steel sleeve adapted to be inserted and retained in said channel, said sleeve having a first retaining lip on one surface and a second retaining lip on the opposite surface, said first retaining lip being truncated along two opposite sides, the outer diameter of the second retaining lip being greater than the width of said channel, and the outer diameter of said first retaining lip across said truncated sides being less than the width of said channel, the length of said sleeve being greater than the length of said channel; a ridge on the interior surface of said sleeve at approximately one-half the length of said sleeve; a stainless steel, resilient C-shaped locking ring adapted to be inserted on said sleeve between said first retaining lip and the top of said housing portion when said sleeve is inserted through said channel.
References Cited (Backward Citations)
US3596656A
Cited
US4274401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-27 | 1987-08-29 | 1988-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-27 | 1991-08-29 | 1992-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-27 | 1995-08-29 | 1996-02-28 | $7700.00 | Window Closed / Lapsed |