Patent EP1153574A2 successfully refreshed from Google Patents.
EP1153574A2
Expired / Lapsed
EP
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Apparatus for use in spinal surgery
Assignee: Warsaw Orthopedic Inc
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Filing: 1989-06-13
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Granted: —
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Expires: 2009-06-13
Abstract
Abstract 1. Apparatus for use in spinal surgery for preparing across a spinal disc and into adjacent vertebral bodies (V) an implantation space having a longitudinal dimension along the longitudinal axis of the spine and for providing protected access to the implantation space, said apparatus comprising: a spinal implant (50) having a dimension along the longitudinal axis of the spine greater than the longitudinal dimension of the implantation space as formed and having opposed upper and lower surfaces adapted for placement in contact with the adjacent vertebral bodies (V) when inserted in the implantation space; a rigid guard member (10) for guiding the preparation across the spinal disc and into the adjacent vertebral bodies (V) of the implantation space and the insertion into the implantation space of said spinal implant, said guard member (10) having a passage through which said spinal implant (50) passes into the implantation space in the spine, said guard member (10) having a distal end (29) with opposed portions adapted for contact with the adjacent vertebral bodies (V), said opposed portions having a fixed height therebetween that is greater than the height of the disc space; and an insertion device (100) for inserting said spinal implant (50) through said guard member (10), said insertion device (100) having a portion (114) for engaging and disengaging said spinal implant (50), said portion being dimensioned for insertion through said passage of said guard member (10).
Inventors
- 👤 Gary Karlin Michelson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 18:58
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1671; A61B17/17; A61B17/1739; A61B17/1757; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61F2/46; A61F2/4603; A61F2/4611; A61B17/56; A61B17/58; A61B17/88; A61B17/8875; A61B17/02; A61B17/025; A61B2017/0256; A61B90/00; A61B90/03; A61B2090/033; A61B2090/036; A61F2/30721; A61F2/30744; A61F2/442; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30138; A61F2002/30143; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30329; A61F2002/30405; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/30784; A61F2002/30785; A61F2002/30787; A61F2002/3085; A61F2002/448; A61F2002/4619; A61F2002/4625; A61F2002/4627; A61F2002/4629; A61F2002/4681; A61F2220/00; A61F2220/0025; A61F2230/00; A61F2230/0002; A61F2230/0017; A61F2230/0063; A61F2230/0069
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
234 words
Apparatus for use in spinal surgery for preparing across a spinal disc and into
adjacent vertebral bodies (V) an implantation space having a longitudinal dimension
along the longitudinal axis of the spine and for providing protected access to the
implantation space, said apparatus comprising: a spinal implant (50) having a dimension along the longitudinal axis of the spine
greater than the longitudinal dimension of the implantation space as formed and having
opposed upper and lower surfaces adapted for placement in contact with the adjacent
vertebral bodies (V) when inserted in the implantation space; a rigid guard member (10) for guiding the preparation across the spinal disc and
into the adjacent vertebral bodies (V) of the implantation space and the insertion into the
implantation space of said spinal implant, said guard member (10) having a passage
through which said spinal implant (50) passes into the implantation space in the spine,
said guard member (10) having a distal end (29) with opposed portions adapted for
contact with the adjacent vertebral bodies (V), said opposed portions having a fixed
height therebetween that is greater than the height of the disc space; and an insertion device (100) for inserting said spinal implant (50) through said guard
member (10), said insertion device (100) having a portion (114) for engaging and
disengaging said spinal implant (50), said portion being dimensioned for insertion
through said passage of said guard member (10).
Claim 2
Dependent Claim
35 words
The apparatus of claim 1, wherein said upper and lower surfaces of said
implant (50) for placement between and at least in part within the adjacent vertebral
bodies (V) are at least in part arcuate.
Claim 3
Dependent Claim
43 words
The apparatus of either claim 1 or 2, wherein each of said upper and lower
surfaces of said implant (50) have at least one opening adapted to permit bone from the
adjacent vertebral bodies (V) to grow into and through said implant (50).
Claim 4
Dependent Claim
24 words
The apparatus of claim 3, wherein said implant (50) has a hollow between
said upper and lower surfaces for holding bone growth promoting material.
Claim 5
Dependent Claim
44 words
The apparatus of claim 4, wherein said at least one opening (56) of each of
said upper and lower surfaces of said implant (50) are in communication with said
hollow to permit bone from adjacent vertebral bodies (V) to grow through said implant
(50).
Claim 6
Independent Claim
24 words
The apparatus of any one of claims 1-5, wherein said implant (50) is
comprised at least in part of a material other than bone.
Claim 7
Independent Claim
36 words
The apparatus of any one of claims 1-6, wherein said implant (50) is formed of
a material stronger than the adjacent vertebral bodies (V) in contact with said implant
(50) when inserted into the implantation space.
Claim 8
Independent Claim
18 words
The apparatus of any one of claims 1-7, wherein said implant (50) is adapted
to receive fusion-promoting substances.
Claim 9
Dependent Claim
11 words
The apparatus of claim 8, wherein said fusion-promoting substance is bone.
Claim 10
Independent Claim
17 words
The apparatus of any one of claims 1-7, wherein said implant (50) comprises
a fusion promoting substance.
Claim 11
Independent Claim
35 words
The apparatus of any one of claims 1-10, wherein each of said upper and
lower surfaces of said implant (50) has a surface projection (53) for penetrably engaging
each of the adjacent vertebral bodies (V).
Claim 12
Dependent Claim
14 words
The apparatus of claim 11, wherein said surface projection (53) is a thread
(53).
Claim 13
Independent Claim
36 words
The apparatus of any one of claims 1-12, wherein said insertion device (100)
further comprises a disengaging mechanism (104) for preventing movement of said
implant (50) during disengagement of said portion (114) from said implant (50).
Claim 14
Independent Claim
38 words
The apparatus of any one of claims 1-13, wherein said insertion device (100)
has a first cooperating member (116) and said implant (50) has a corresponding second
cooperating member (70) for cooperatively engaging said first cooperating member
(116).
Claim 15
Independent Claim
25 words
The apparatus of any one of claims 1-14, wherein said insertion device (100)
further comprises a handle (118, 120) for operating said insertion device (100).
Claim 16
Independent Claim
15 words
The apparatus of any one of claims 1-15, wherein said guard member (10) is
tubular.
Claim 17
Independent Claim
17 words
The apparatus of any one of claims 1-16, wherein said guard member (10) is
a tubular sleeve.
Claim 18
Independent Claim
44 words
The apparatus of any one of claims 1-17, further comprising an inner sleeve
(15) for placement within said passage of said guard member (10) for guiding and
supporting a bone removal device (22) used in creating the implantation space through
said guard member (10).
Claim 19
Dependent Claim
28 words
The apparatus of claim 18, wherein said inner sleeve (15) has means (17)
for limiting the insertion depth of said inner sleeve (15) into said guard member (10).
Claim 20
Independent Claim
23 words
The apparatus of any one of claims 1-19, wherein said distal end (29) of said
guard member (10) is non-expandable along its height.
Claim 21
Independent Claim
28 words
The apparatus of any one of claims 1-20, wherein said guard member (10)
has a wall without openings therein surrounding said passage passing through said
guard member (10).
Claim 22
Independent Claim
43 words
The apparatus of any one of claims 1-21, wherein said guard member (10)
has a length defined by a distal portion and a proximal portion (14) forming said length,
said guard member (10) having a substantially uniform cross section along its distal
portion.
Claim 23
Independent Claim
42 words
The apparatus of any one of claims 1-21, wherein said guard member (10)
has a length defined by a distal portion and a proximal portion (14) forming said length,
said guard member (10) having a substantially uniform cross section along its length.
Claim 24
Dependent Claim
37 words
The apparatus of either claim 22 or 23, wherein said distal end (29) of said
guard member (10) has a cross sectional configuration substantially the same as said
substantially uniform cross section of said guard member (10).
Claim 25
Independent Claim
26 words
The apparatus of any one of claims 1-24, wherein said distal end (29) of said
guard member (10) has a circumference that is uninterrupted and constant.
Claim 26
Independent Claim
43 words
The apparatus of any one of claims 1-25, wherein said guard member (10)
has a width measured perpendicular to its height, the width of said guard member (10)
when appropriately selected being less than one half of the width of the disc space.
Claim 27
Independent Claim
26 words
The apparatus of any one of claims 1-26, wherein said guard member (10) is
configured for insertion into the human lumbar spine from the posterior approach.
Claim 28
Independent Claim
21 words
The apparatus of any one of claims 1-27, wherein said distal end (29) of said
guard member (10) has projections (12).
Claim 29
Dependent Claim
15 words
The apparatus of claim 28, wherein said projections (12) comprise a plurality
of teeth (12).
Claim 30
Dependent Claim
21 words
The apparatus of either claim 28 or 29, wherein said projections (12)
penetrably engage each of the adjacent vertebral bodies (V).
Claim 31
Independent Claim
21 words
The apparatus of any one of claims 28-30, wherein said projections (12)
extend at least in part into the disc space.
Claim 32
Independent Claim
23 words
The apparatus of any one of claims 28-31, wherein said projections (12)
extend at least in part between the adjacent vertebral bodies (V).
Claim 33
Independent Claim
23 words
The apparatus of any one of claims 28-32, wherein said projections (12) are
adapted to penetrably engage the posterior surface of the spine.
Claim 34
Independent Claim
26 words
The apparatus of any one of claims 28-33, further comprising a wall
surrounding said passage, said projections (12) being coextensive with said wall
surrounding said passage.
Claim 35
Independent Claim
22 words
The apparatus of any one of claims 1-27, wherein said guard member (10)
further comprises means for embedding (12) into the spine.
Claim 36
Dependent Claim
26 words
The apparatus of claim 35, wherein said embedding means (12) comprises
a plurality of extensions (12) proximate said distal end (29) for penetration into the
spine.
Claim 37
Dependent Claim
21 words
The apparatus of either claim 35 or 36, wherein said extensions (12) extend
at least in part into the disc space.
Claim 38
Independent Claim
21 words
The apparatus of any one of claims 1-37, wherein said insertion device (100)
is configured to rotatively engage said implant (50).
Claim 39
Independent Claim
110 words
A system for inserting into a spine during spinal surgery an interbody spinal
implant (50) that promotes fusion between adjacent vertebral bodies, an instrument
(100) of said system comprising: a first portion (114) configured to engage the implant (50) and to impart axial
movement to the implant (50); and a second portion (102) configured to engage the implant (50) to rotate the
implant (50), said first and second portions cooperating to lockably engage the implant
(50) such that during insertion of the implant (50) said instrument (100) can be rotated in
either direction, pushed, and pulled by said second portion (102) without disengaging
the implant (50) from said instrument (100).
Claim 40
Dependent Claim
67 words
The system of claim 39, further comprising an implant (50) for promoting
fusion between adjacent vertebral bodies (V), said implant (50) having upper and lower
surfaces for placement between and in contact with the adjacent vertebral bodies (V),
each of said upper and lower surfaces having at least one opening (56) adapted to
permit bone from the adjacent vertebral bodies (V) to grow through said implant (50).
Claim 41
Dependent Claim
21 words
The system of claim 40, further comprising a hollow between said upper and
lower surfaces for holding bone growth promoting material.
Claim 42
Dependent Claim
40 words
The system of claim 41, wherein said at least one opening (56) of each of
said upper and lower surfaces are in communication with said hollow to permit bone
from adjacent vertebral bodies (V) to grow through said implant (50).
Claim 43
Independent Claim
21 words
The system of any one of claims 40-42, wherein said implant (50) is made of
an implant material other than bone.
Claim 44
Independent Claim
30 words
The system of any one of claims 40-43, wherein said implant (50) is formed
of a material stronger than the adjacent vertebral bodies (V) in contact with said implant
(50).
Claim 45
Independent Claim
34 words
The system of any one of claims 40-44, wherein said each of said upper
and lower surfaces of said implant (50) has a surface projection (53) for penetrably
engaging the adjacent vertebral bodies (V).
Claim 46
Dependent Claim
14 words
The system of claim 45, wherein said surface projection (53) is a thread (53).
Claim 47
Dependent Claim
24 words
The system of claim 46, wherein said second portion (102) turns to screw
said implant (50) into contact with the adjacent vertebral bodies (V).
Claim 48
Independent Claim
31 words
The system of any one of claims 39-47, wherein said first portion is
configured to prevent the implant (50) from moving axially apart from axial movement of
said first portion (114).
Claim 49
Independent Claim
28 words
The system of any one of claims 39-48, wherein said second portion (102) is
configured to prevent the implant (50) from rotating separate from said second portion
(102).
Claim 50
Independent Claim
16 words
The system of any one of claims 39-49, wherein said first portion (114)
includes a thread.
Claim 51
Independent Claim
28 words
The system of any one of claims 39-50, wherein said second portion (102)
includes a depression (116) for receiving a complementary raised portion (70) of the
implant (50).
Claim 52
Independent Claim
38 words
The system of any one of claims 39-50, wherein the implant (50) has a first
cooperating member (70) and said second portion (102) comprises a corresponding
second cooperating member (116) for cooperatively engaging said first cooperating
member (70).
Claim 53
Independent Claim
33 words
The system of any one of claims 39-52, further comprising a handle (106)
attached to said second portion (102) for exerting force during rotation in either
direction, pushing, and pulling of the instrument.
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