US6080157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to stabilize the lamina
Assignee: C G SURGICAL Ltd
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Filing: 1996-09-11
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Granted: 2000-06-27
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Expires: 2016-09-11
Abstract
Abstract A device for dynamically stabilizing the lamina after a laminoplasty includes spacer which is shaped to engage between the severed edges of the lamina. The device also includes a retainer attached to the spacer which is adapted to maintain the spacer in an operative position. A method of dynamically stabilizing the lamina after a laminoplasty is also provided, which includes the steps of positioning the spacer between the severed edges of the lamina, and positioning the retainer to maintain the spacer in the operative position.
Inventors
- 👤 Richard Andrew Cathro
- 👤 Grant Randall Gillett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7071
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
78 words
A surgical implant device for dynamically stabilizing the lamina of the spine after a laminoplasty comprising: a spacing means having opposed edges, the edges being appropriately spaced for engagement, in an operative position, with the severed edges of the lamina, with each edge of the spacing means shaped to engage with a respective severed edge of the lamina; and a retaining means attached to said spacing means and adapted to maintain the spacing means in the operative position.
Claim 2
Dependent Claim
78 words
A surgical implant device for dynamically stabilizing the lamina of the spine after a laminoplasty comprising: a spacing means having opposed edges, the edges being appropriately spaced for engagement, in an operative position, with the severed edges of the lamina, with each edge of the spacing means shaped to engage with a respective severed edge of the lamina; and a retaining means attached to said spacing means and adapted to maintain the spacing means in the operative position.
Claim 3
Dependent Claim
20 words
A surgical implant device as claimed in claim 1 wherein said spacing means comprises a plate of substantially rectangular configuration.
Claim 4
Dependent Claim
16 words
A surgical implant device as claimed in claim 1 wherein said device is made from nylon.
Claim 5
Dependent Claim
16 words
A surgical implant device as claimed in claim 1 wherein said device is made from Teflon.
Claim 6
Dependent Claim
16 words
A surgical implant device as claimed in claim 1 wherein said device is made from titanium.
Claim 7
Dependent Claim
52 words
A surgical implant device as claimed in claim 1 wherein the spacing means is substantially planar and the opposed edges of the spacing means are substantially T-shaped in cross-section, the intersection of the cross member and shank of the "T" defining a notch for engaging the respective severed edges of the lamina.
Claim 8
Dependent Claim
32 words
A surgical implant device as claimed in claim 1 wherein the shape of the opposed edges of the spacing means defines a notch for engaging a respective severed edge of the lamina.
Claim 9
Dependent Claim
17 words
A surgical implant device as claimed in claim 1 wherein said retaining means comprises a spring clip.
Claim 10
Dependent Claim
39 words
A surgical implant device as claimed in claim 8, wherein the spring clip comprises: two arms extending from the spacing means; a U-shaped section to engage around the spine; and spring means between the arms and the U-shaped section.
Claim 11
Independent Claim
79 words
A device for dynamically stabilizing the lamina of the spine after a laminoplasty comprising: spacing means shaped to engage between the severed edges of the lamina; and retaining means attached to said spacing means and shaped to maintain the spacing means in an operable position, wherein said retaining means comprises a spring clip having: two arms extending from the spacing means; a U-shaped section to engage over the spine; and spring means between the arms and the U-shaped section.
Claim 12
Independent Claim
79 words
A device for dynamically stabilizing the lamina of the spine after a laminoplasty comprising: spacing means shaped to engage between the severed edges of the lamina; and retaining means attached to said spacing means and shaped to maintain the spacing means in an operable position, wherein said retaining means comprises a spring clip having: two arms extending from the spacing means; a U-shaped section to engage over the spine; and spring means between the arms and the U-shaped section.
Claim 13
Independent Claim
90 words
A method of dynamically stabilizing reshaped lamina after a laminoplasty comprising the steps of: providing a spacing means having opposed edges, the edges of the spacing means shaped to engage with a respective severed edge of the lamina, and a retaining means attached to said spacing means, positioning the spacing means between the severed edges of the lamina so that the opposed edges of the spacing means engage with a respective severed edge of the lamina; and positioning the retaining means to maintain the spacing means in the operative position.
Claim 14
Independent Claim
90 words
A method of dynamically stabilizing reshaped lamina after a laminoplasty comprising the steps of: providing a spacing means having opposed edges, the edges of the spacing means shaped to engage with a respective severed edge of the lamina, and a retaining means attached to said spacing means, positioning the spacing means between the severed edges of the lamina so that the opposed edges of the spacing means engage with a respective severed edge of the lamina; and positioning the retaining means to maintain the spacing means in the operative position.
Claim 15
Dependent Claim
25 words
A method of/dynamically stabilising reshaped lamina after a laminoplasty as claimed in claim 11 wherein said retaining means is positioned to engage over the spine.
Claim 16
Dependent Claim
27 words
A method as claimed in claim 11 wherein each edge of the spacing means has a notch to engage with a respective severed edge of the lamina.
Claim 17
Dependent Claim
15 words
A method as claimed in claim 11 wherein said retaining means comprises a spring clip.
Claim 18
Dependent Claim
37 words
A method as claimed in claim 14 wherein the spring clip comprises: two arms extending from the spacing means; a U-shaped section to engage around the spine; and spring means between the arms and the U-shaped section.
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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) | 2003-06-27 | 2003-12-27 | 2004-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-27 | 2007-12-27 | 2008-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-27 | 2011-12-27 | 2012-06-27 | $7700.00 | Window Closed / Lapsed |