Patent US7156874B2 successfully refreshed from Google Patents.
US7156874B2
Expired / Lapsed
US
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Spinal intervertebral implant adjustable in situ comprising hard pass point
Assignee: Stryker European Operations Holdings LLC
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Filing: 2001-12-05
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Granted: 2007-01-02
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Expires: 2021-12-05
Abstract
Abstract The invention concerns a spinal intervertebral implant ( 200 ) comprising at least an upper element ( 203 ), a lower element ( 205 ), and an intermediate member ( 201 ) adapted to co-operate with the upper and lower elements by helical linking means ( 207, 254 ) including means ( 216 ) forming hard pass points when the helical linkage is carried out.
Inventors
- 👤 Francois Paponneau
- 👤 Frédéric Conchy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:14
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/4465; A61F2/442; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30143; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30289; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30362; A61F2002/30364; A61F2002/30365; A61F2002/3037; A61F2002/30372; A61F2002/30476; A61F2002/30507; A61F2002/30535; A61F2002/30537; A61F2002/3055; A61F2002/30593; A61F2002/30601; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3079; A61F2002/30841; A61F2002/30904; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0063; A61F2230/0069; A61F2230/0091
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
76 words
A spinal intervertebral implant comprising at least an upper element, a lower element, and an intermediate member which can cooperate with the upper and lower elements via helical linking means, wherein the helical linking means include cam and a cam follower which is able to come into contact with a bearing surface of the cam for forming hard pass points when the helical linkage is carried out, the intermediate member including the cam or cam follower.
Claim 2
Dependent Claim
76 words
A spinal intervertebral implant comprising at least an upper element, a lower element, and an intermediate member which can cooperate with the upper and lower elements via helical linking means, wherein the helical linking means include cam and a cam follower which is able to come into contact with a bearing surface of the cam for forming hard pass points when the helical linkage is carried out, the intermediate member including the cam or cam follower.
Claim 3
Dependent Claim
19 words
The implant as claimed in claim 1 , wherein the bearing surface has zones forming the hard pass points.
Claim 4
Dependent Claim
24 words
The implant as claimed in claim 2 , wherein the zones forming the hard pass points comprise pass points protruding from the bearing surface.
Claim 5
Dependent Claim
15 words
The implant as claimed in claim 3 , wherein the hard pass points are bosses.
Claim 6
Dependent Claim
23 words
The implant as claimed in claim 1 , wherein the intermediate member can be received in one of the upper and lower elements.
Claim 7
Dependent Claim
24 words
The implant as claimed in claim 5 , wherein the intermediate element can be received in the other of the upper and lower elements.
Claim 8
Dependent Claim
23 words
The implant as claimed in claim 1 , wherein one of the upper and lower elements can be received in the intermediate member.
Claim 9
Dependent Claim
26 words
The implant as claimed in claim 7 , characterized in that the other of the upper and lower elements can be received in the intermediate member.
Claim 10
Dependent Claim
40 words
The implant as claimed in claim 1 , wherein the helical linkage between the intermediate member and the upper element has a direction of screwing counter to that of the helical linkage between the central element and the lower element.
Claim 11
Dependent Claim
29 words
The implant as claimed in claim 1 , further comprising means for blocking in position at least one of the upper and lower elements relative to the intermediate member.
Claim 12
Dependent Claim
18 words
The implant as claimed in claim 10 , wherein the means for blocking in position comprise a stud.
Claim 13
Dependent Claim
28 words
The implant as claimed in claim 11 , wherein the stud comprises a part which is eccentric in relation to the main axis of use of the stud.
Claim 14
Dependent Claim
18 words
The implant as claimed in claim 11 , wherein the stud comprises a part which can be screwed.
Claim 15
Dependent Claim
19 words
The implant as claimed in claim 1 , further comprising means for anchoring the implant in the vertebral plateaus.
Claim 16
Dependent Claim
24 words
The implant as claimed in claim 1 , wherein the upper and lower elements can fit into one another through being of complementary shape.
Claim 17
Dependent Claim
20 words
The implant as claimed in claim 15 , wherein the upper and lower elements fit into one another with sliding.
Claim 18
Dependent Claim
34 words
The implant as claimed in claim 15 or 16 , wherein each lower and upper element has a general U-shape, the elements being able to fit into one another with the U-shapes in opposition.
Claim 19
Dependent Claim
33 words
The implant as claimed in claim 15 or 17 , wherein with at least one of the upper and lower elements comprising the cam, said cam has an opening facing its bearing surface.
Claim 20
Dependent Claim
108 words
A spinal intervertebral implant comprising: an upper element having a first slot which extends at an angle with respect to the longitudinal axis of said implant, said first slot having a plurality of first ramps along a length thereof; a lower element having a second slot which extends at an angle with respect to the longitudinal axis of said implant, said second slot having a plurality of second ramps along a length thereof; and an intermediate member having at least two studs disposed within the first and second slots of the upper and lower elements, whereby said studs are adapted to cooperate with said first and second ramps.
Claim 21
Dependent Claim
108 words
A spinal intervertebral implant comprising: an upper element having a first slot which extends at an angle with respect to the longitudinal axis of said implant, said first slot having a plurality of first ramps along a length thereof; a lower element having a second slot which extends at an angle with respect to the longitudinal axis of said implant, said second slot having a plurality of second ramps along a length thereof; and an intermediate member having at least two studs disposed within the first and second slots of the upper and lower elements, whereby said studs are adapted to cooperate with said first and second ramps.
Claim 22
Dependent Claim
40 words
The implant of claim 19 , wherein upon rotation of said upper and lower elements with respect to said intermediate member, the engagement between said studs and said ramps form hard pass points corresponding to different heights of said implant.
Claim 23
Dependent Claim
28 words
The implant of claim 20 , further including set screws for locking said upper and lower elements with said intermediate member upon achievement of a desired implant height.
Claim 24
Dependent Claim
37 words
The implant of claim 21 , wherein said upper and lower elements each include two slots having a plurality of ramps along their lengths, and said intermediate member includes four studs for cooperation with each said slot.
Claim 25
Dependent Claim
25 words
The implant of claim 20 , wherein opposite rotation of said upper and lower elements with said intermediate member varies the height of said implant.
Claim 26
Dependent Claim
57 words
A spinal intervertebral implant comprising at least an upper element, a lower element, an intermediate member which can cooperate with the upper and lower elements via helical linking means and means for anchoring the implant in vertebral bodies, wherein the helical linking means include means for forming hard pass points when the helical linkage is carried out.
Claim 27
Dependent Claim
57 words
A spinal intervertebral implant comprising at least an upper element, a lower element, an intermediate member which can cooperate with the upper and lower elements via helical linking means and means for anchoring the implant in vertebral bodies, wherein the helical linking means include means for forming hard pass points when the helical linkage is carried out.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2010-01-01 | 2010-07-03 | 2011-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2014-01-01 | 2014-07-03 | 2015-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2018-01-01 | 2018-07-03 | 2019-01-02 | $7700.00 | Window Closed / Lapsed |