US5074864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp assembly for use in a spinal system
Assignee: Zimmer Technology Inc
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Filing: 1988-12-21
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Granted: 1991-12-24
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Expires: 2008-12-21
Abstract
Abstract The present invention relates to a mid-line clamp assembly for use in a posterior spinal system including components designed to be affixed to the spinal column of a person to correct for various lateral and sagittal deformities. The clamp assembly includes inferior and superior clamp halves slidably interconnected with one another. Each clamp half has a body portion and a shoe connected to the body portion. Each clamp half has a stud connected to the body portion. The studs are connectable to other members incorporated in this spinal system for fixing the position of the clamp halves with respect to each other. The clamps are used in conjunction with the spinal system which also includes a pair of smooth surfaced rods mounted in spaced relation to one another on the spinal column in conjunction with various fixation devices such as the clamps with hook bodies, hooks, screws with hook bodies and couplers. Each such fixation device utilizes locking sleeve assemblies at each connection point to secure the respective fixation device to the respective rod or rods. The coupler assemblies are provided to maintain the spacing of the rods. The method of performing surgery using the posterior spinal system is also disclosed.
Inventors
- 👤 Trent E. Cozad
- 👤 Antony J. Lozier
- 👤 Jerry L. Lower
- 👤 Allan F. Tencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:26
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7056; A61B17/7001; A61B17/7002; A61B17/7004; A61B17/7008; A61B17/7047; A61B17/7049; A61B17/7052; F; F16; F16B; F16B13/00; F16B13/04; F16B13/06; A61B17/7032
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
106 words
A mid-line clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a shoe connected to said body portion; c) each clamp half having a stud connection to the body portion thereof and extending outwardly therefrom; d) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position, said studs being connectable to attachment means for fixing the position of said clamp halves with respect to one another.
Claim 2
Dependent Claim
106 words
A mid-line clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a shoe connected to said body portion; c) each clamp half having a stud connection to the body portion thereof and extending outwardly therefrom; d) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position, said studs being connectable to attachment means for fixing the position of said clamp halves with respect to one another.
Claim 3
Dependent Claim
138 words
A mid-line clamp assembly for use in a spinal implant system comprising: a) inferior and superior clamp halves slidably interconnected with one another; b) each clamp half having a body portion and a shoe connected to said body portion; c) each clamp half having a stud connected to the body portion thereof and extending outwardly therefrom; d) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position, said studs being connectable to attachment means for fixing the position of said clamp halves with respect to one another, and wherein one of said clamp halves includes an elongated recess and the other of said clamp halves includes an elongated projection complimentary with said recess and slidably insertable therein, said recess and projection interacting to slidably interconnect said clamp halves.
Claim 4
Dependent Claim
138 words
A mid-line clamp assembly for use in a spinal implant system comprising: a) inferior and superior clamp halves slidably interconnected with one another; b) each clamp half having a body portion and a shoe connected to said body portion; c) each clamp half having a stud connected to the body portion thereof and extending outwardly therefrom; d) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position, said studs being connectable to attachment means for fixing the position of said clamp halves with respect to one another, and wherein one of said clamp halves includes an elongated recess and the other of said clamp halves includes an elongated projection complimentary with said recess and slidably insertable therein, said recess and projection interacting to slidably interconnect said clamp halves.
Claim 5
Dependent Claim
14 words
The invention of claim 2, wherein said recess and projection are of L-shaped cross-section.
Claim 6
Dependent Claim
16 words
The invention of claim 1, wherein one of said clamp halves has two spaced studs thereon.
Claim 7
Dependent Claim
14 words
The invention of claim 2, wherein said recess and projection are of T-shaped cross-section.
Claim 8
Dependent Claim
24 words
The invention of claim 1, wherein the shoe on one of said clamp halves is wider than the shoe on the other clamp half.
Claim 9
Dependent Claim
100 words
A surgical clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a shoe extending from said body portion; c) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position; and d) means on the clamp assembly for cooperating in retaining said clamp halves in a position with respect to one another spacing the respective shoes thereof a desired distance apart.
Claim 10
Dependent Claim
100 words
A surgical clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a shoe extending from said body portion; c) said clamp halves being slidable in a direction causing said shoes to move toward one another to a clamping position; and d) means on the clamp assembly for cooperating in retaining said clamp halves in a position with respect to one another spacing the respective shoes thereof a desired distance apart.
Claim 11
Dependent Claim
29 words
The invention of claim 7, wherein said means on the clamp assembly for cooperating in retaining includes a stud extending outwardly from at least one of said clamp halves.
Claim 12
Dependent Claim
27 words
The invention of claim 7, wherein said means on the clamp assembly for cooperating in retaining comprises a stud extending outwardly from each of said clamp halves.
Claim 13
Dependent Claim
106 words
A surgical clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a bone gripping means extending from said body portion; c) said clamp halves being slidable in a direction causing said bone gripping means to move toward one another to a clamping position; and d) means on the clamp assembly for cooperating in retaining said clamp halves in a position with respect to one another spacing the respective bone gripping means thereof a desired distance apart.
Claim 14
Dependent Claim
106 words
A surgical clamp assembly for use in a spinal implant system comprising: a) first and second clamp halves slidably interconnected with one another, said halves in direct slidable contact with one another; b) each clamp half having a body portion and a bone gripping means extending from said body portion; c) said clamp halves being slidable in a direction causing said bone gripping means to move toward one another to a clamping position; and d) means on the clamp assembly for cooperating in retaining said clamp halves in a position with respect to one another spacing the respective bone gripping means thereof a desired distance apart.
Claim 15
Dependent Claim
15 words
The invention of claim 10, wherein said bone gripping means is a hook end portion.
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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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |