EP0832622A2
Expired / Lapsed
EP
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A spinal cage assembly
Assignee: Stryker Trauma GmbH
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Filing: 1997-09-12
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Granted: —
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Expires: 2017-09-12
Abstract
Abstract The invention relates to a spinal cage assembly including a sleeve-shaped member of a metal compatible with the human body, said sleeve-shaped member having end faces defining irregular edges and having a wall provided with holes. <IMAGE>
Inventors
- 👤 Stavenhagen Peter Dr. Metz
- 👤 Bernd Robioneck
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 13:42
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/46; A61F2/4603; A61F2/4611; A61F2/44; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30115; A61F2002/30199; A61F2002/30224; A61F2002/3023; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/3037; A61F2002/30373; A61F2002/30433; A61F2002/30476; A61F2002/30507; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/3054; A61F2002/3055; A61F2002/30593; A61F2002/30601; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30777; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/30841; A61F2002/30845; A61F2002/4625; A61F2002/4627; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0063; A61F2230/0069; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
34 words
A spinal cage assembly including a sleeve-shaped member (12,14) of
a metal compatible with the human body, said sleeve-shaped member having end
faces defining irregular edges and having a wall provided with holes (16,36).
Claim 2
Dependent Claim
36 words
A spinal cage assembly as defined in claim 1, wherein said irregular
edge of at least one of said end faces is inclined to a transverse axis of said sleeve-shaped
member (14) under a predetermined angle.
Claim 3
Dependent Claim
18 words
A spinal cage assembly as defined in claim 2, wherein said predetermined
angle is between 3° and 6°.
Claim 4
Dependent Claim
22 words
A spinal cage assembly as defined in claim 1, wherein said irregular
edges are provided with teeth (24,32) and gaps (28,34) therebetween.
Claim 5
Dependent Claim
20 words
A spinal cage assembly as defined in claim 4, wherein said teeth
(24,32) have tips formed as planar surfaces (26).
Claim 6
Dependent Claim
30 words
A spinal cage assembly as defined in claim 5, wherein said gaps
(28,34) are of circular arc shape, said gaps and said planar surfaces (26) defining
relatively sharp edges therebetween.
Claim 7
Dependent Claim
30 words
A spinal cage assembly as defined in claim 1, wherein said wall includes
elongated holes (16,36) having longitudinal axes substantially parallel to a
longitudinal axes of said sleeve-shaped member (12,14).
Claim 8
Dependent Claim
35 words
A spinal cage assembly as defined in claim 1, wherein said wall includes
at least one threaded bore (22,50) for receiving a positioning tool (52) comprising
a threaded extension (58,60) at a free end thereof.
Claim 9
Dependent Claim
47 words
A spinal cage assembly as defined in claim 1, wherein said sleeve-shaped
member comprises an internal sleeve-shaped member (14) and an external
sleeve-shaped member (12) telescopically receiving said internal sleeve-shaped
member, said external and internal sleeve-shaped members (14,12) being adapted to
be fixed in different hight positions.
Claim 10
Dependent Claim
114 words
A spinal cage assembly as defined in claim 9, wherein said external
sleeve shaped member (14) includes at least two circumferentially spaced radial
holes (18,20), said internal sleeve-shaped member (14) includes at least two circumferentially
spaced threaded bores (38,40) adapted to be aligned to said radial holes
(18,20) of said external sleeve-shaped member (12) such that said internal sleeve-shaped
member (14) partially projects from said external sleeve-shaped member
(12), said external sleeve-shaped member (12) has end faces formed as irregular
edges, and said radial holes (18,20) and threaded bores (38,40) are adapted to
receive threaded bolts (44,46) so as to hold said internal and external sleeve-shaped
members (14,12) stationary with respect to each other.
Claim 11
Dependent Claim
55 words
A spinal cage assembly as defined in claim 10, wherein two or three
pairs of radial holes (18,20) and threaded bores (38,40) are provided, the holes and,
respectively, bores of each pair being disposed above each other along an axis parallel
to a longitudinal axis of said external sleeve-shaped member or, respectively,
internal sleeve-shaped member.
Claim 12
Dependent Claim
43 words
A spinal cage assembly as defined in claim 9, wherein a force member
acts between said external and internal sleeve-shaped members so as to enable adjustment
thereof in height, and fixing means are provided to fix said sleeve-shaped
members in their respective positions.
Claim 13
Dependent Claim
39 words
A spinal cage assembly as defined in claim 9, wherein said external
sleeve-shaped member (12) includes at least one radial threaded bore (22) for
receiving a positioning tool (52) comprising a threaded extension (58,60) at a free
end thereof.
Claim 14
Dependent Claim
22 words
A spinal cage assembly as defined in claim 9, wherein said sleeve-shaped
member (12) has a wall provided with radial windows (16).
Claim 15
Dependent Claim
21 words
A spinal cage assembly as defined in claim 9, wherein said internal
and external sleeve-shaped members (14,12) are of circular cross-section.
Claim 16
Dependent Claim
61 words
A spinal cage assembly as defined in claim 9, wherein said threaded
bolts (42,44) comprise a head and a stem, said stem comprising a threaded portion
(48) and a cylindrical portion (46) arranged between said threaded portion and said
head and being of a diameter corresponding substantially to the diameter of said
radial holes (18,20) of said external sleeve-shaped member (12).
Claim 17
Dependent Claim
34 words
A tool for a spinal cage assembly as defined in claim 9, including an
elongated shank (56) having a handle (54) at one end thereof and a threaded extension
(60) at another end thereof.
Claim 18
Dependent Claim
65 words
A tool as defined in claim 17, wherein a sleeve (62) is rotatably
mounted upon said threaded extension (68) so as to cooperate with a shoulder (68)
of said elongated shaft (56) at an end thereof remote from said threaded extension
(60), and includes a concave recess (66) of a shape conforming to the rounded shape
of said internal or, respectively, external sleeve-shaped member (14,12).
Claim 19
Dependent Claim
58 words
A tool as defined in claim 18, wherein said threaded extension (60)
includes a smooth portion (58) and said sleeve (62) has an internal threaded portion
(64) spaced from a free end thereof, said internal threaded portion (64) being out of
engagement with the threads of said threaded extension (60) when said sleeve (62)
engages said shoulder (68).
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