US5059194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cervical distractor
Assignee: Warsaw Orthopedic Inc
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Filing: 1990-02-12
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Granted: 1991-10-22
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Expires: 2010-02-12
Abstract
Abstract An improved four-legged distractor with multiplanar adjustability facilitates intervertebral bone grafting. The legs are slidably fixed to a rectangular frame so that the space between opposing legs and the space between adjacent legs may be varied. The bottom portion of each leg is offset so that a large space is created between the top portion of the legs to permit easy access to the operating space.
Inventors
- 👤 Gary K. Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/02; A61B17/025; A61B2017/0256; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/442; A61F2/28; A61F2002/2835
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
124 words
A spinal distractor comprising a frame having a support bar and having a pair of arms extending perpendicular from said support bar, one of said arms fixed in relationship to said support bar and the other of arms being movable in relationship to said support bar, a pair of opposing legs dependent from each of said arms, at least one of said legs of each pair of said legs fixed in relationship to said arm, said legs having an upper portion having a central axis and a lower portion having a central axis and an angled portion intermediate said upper and lower portions whereby the central axis of the lower portion of said legs is parallel to the central axis of the upper portion.
Claim 2
Dependent Claim
124 words
A spinal distractor comprising a frame having a support bar and having a pair of arms extending perpendicular from said support bar, one of said arms fixed in relationship to said support bar and the other of arms being movable in relationship to said support bar, a pair of opposing legs dependent from each of said arms, at least one of said legs of each pair of said legs fixed in relationship to said arm, said legs having an upper portion having a central axis and a lower portion having a central axis and an angled portion intermediate said upper and lower portions whereby the central axis of the lower portion of said legs is parallel to the central axis of the upper portion.
Claim 3
Dependent Claim
47 words
The spinal distractor of claim 1 further comprising a ratchet member movably coupled within said support bar and at least one of said arms being attached to said ratchet member wherein actuation of said ratchet member selectively displaces the arm in one direction along the support bar.
Claim 4
Dependent Claim
49 words
The spinal distractor of claim 2 in which said ratchet member has a detent movable between a first position and a second position said detect engaging a gear on said ratchet member, permitting said arm to be able to move in more than on direction along said support bar.
Claim 5
Dependent Claim
23 words
The spinal distractor of claim 3 in which the legs of said distractor are flat on at least one side of said legs.
Claim 6
Dependent Claim
22 words
The spinal distractor of claim 1 in which one of each pair of legs are movably coupled to each of said arms.
Claim 7
Dependent Claim
162 words
A spinal distractor comprising a frame having a support bar and having a pair of arms extending perpendicular from said support bar, at least one of the arms being movable in relationship to said support bar, a pair of opposing legs dependent from each of said arms, said legs having an upper portion having a central axis and a lower portion having a central axis and an angled portion intermediate said upper and lower portions whereby the central axis of the lower portion of said legs is parallel to the central axis of the upper portion said movable arm is attached to a ratchet member movable within said support bar for selectively limited movement of said arm in one direction and further comprising a ratchet member movably coupled within said support bar and at least one of said arms being attached to said ratchet member wherein actuation of said ratchet member selectively displaces the arm in one direction along the support bar.
Claim 8
Dependent Claim
162 words
A spinal distractor comprising a frame having a support bar and having a pair of arms extending perpendicular from said support bar, at least one of the arms being movable in relationship to said support bar, a pair of opposing legs dependent from each of said arms, said legs having an upper portion having a central axis and a lower portion having a central axis and an angled portion intermediate said upper and lower portions whereby the central axis of the lower portion of said legs is parallel to the central axis of the upper portion said movable arm is attached to a ratchet member movable within said support bar for selectively limited movement of said arm in one direction and further comprising a ratchet member movably coupled within said support bar and at least one of said arms being attached to said ratchet member wherein actuation of said ratchet member selectively displaces the arm in one direction along the support bar.
Claim 9
Dependent Claim
49 words
The spinal distractor of claim 2 in which said ratchet member has a detent movable between a first position and a second position said detent engaging a gear on said ratchet member, permitting said arm to be able to move in more than on direction along said support bar.
Claim 10
Dependent Claim
23 words
The spinal distractor of claim 7 in which the legs of said distractor are flat on at least one side of said legs.
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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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |