Patent JPS5126213A successfully refreshed from Google Patents.
EP0880938A1
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Instrumentation for implant insertion
Assignee: Howmedica Osteonics Corp
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Filing: 1998-05-20
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Granted: —
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Expires: 2018-05-20
Abstract
Abstract A surgical retractor instrument includes at least two elongate members disposed in side by side relation. Each elongate member has proximal and distal end portions and defines a longitudinal passageway for reception of surgical instrumentation. The distal end portion of each elongated member is configured for insertion at least partially within a space defined between adjacent tissue portions, preferably, adjacent vertebrae. The distal end portion includes at least two retractor arms extending in a general longitudinal direction. Each retractor arm has first and second supporting surfaces for engaging opposed adjacent tissue portions, and defines a dimension between the first and second supporting surfaces sufficient to distract the opposed tissue portions upon insertion thereof.
Inventors
- 👤 Salvatore Castro
- 👤 Christopher Mcdonnell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/44; A61F2/4455; A61F2/446; A61B; A61B17/00; A61B17/02; A61B17/025; A61B17/16; A61B17/17; A61B17/1739; A61B17/1757; A61F2/46; A61F2/4603; A61F2/4611; A61B2017/0256; A61F2/442; A61F2/28; A61F2002/2835; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30224; A61F2002/30235; A61F2002/30316; A61F2002/30535; A61F2002/30593; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2002/3085; A61F2002/448; A61F2002/4625; A61F2002/4627; A61F2230/00; A61F2230/0063; A61F2230/0069
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
55 words
A surgical retractor instrument comprising two elongate members disposed in side
by side relation, each elongate member having proximal and distal end portions and
defining a longitudinal passageway for reception of surgical instrumentation, the
distal end portion of each elongate member configured for insertion at least
partially within a space defined between adjacent tissue portions.
Claim 2
Dependent Claim
66 words
The surgical retractor according to claim 1 wherein the distal end portion of each
elongate member includes at least one retractor arm extending in a general
longitudinal direction, each retractor arm having first and second supporting
surfaces for engaging opposed adjacent tissue portion, each retractor arm defining a
dimension between the first and second supporting surfaces sufficient to distract
the opposed tissue portions upon insertion thereof.
Claim 3
Dependent Claim
28 words
The surgical retractor according to claim 2 wherein the dimension defined between
the first and second supporting surfaces of each retractor arm is sufficient to
distract adjacent vertebrae.
Claim 4
Dependent Claim
24 words
The surgical retractor according to claim 1, 2 or 3 wherein the first and second
supporting surfaces of each retractor arm are substantially planar.
Claim 5
Dependent Claim
27 words
The surgical retractor according to any one of the preceding claims, wherein each
retractor arm has a tapered end portion for facilitating insertion between the tissue
portions.
Claim 6
Dependent Claim
24 words
The surgical retractor according to any one of the preceding claims, wherein the
distal end portion of each elongate member has two retractor arms.
Claim 7
Dependent Claim
19 words
The surgical retractor according to any one of the preceding claims, wherein the
two elongate members are monolithically formed.
Claim 8
Dependent Claim
21 words
The surgical retractor according to any one of the preceding claims, wherein the
two elongated members are welded to each other.
Claim 9
Dependent Claim
91 words
A surgical retractor for use in distracting adjacent vertebrae comprising first and
second elongate sleeve members arranged in side by side relation, each sleeve
member having a proximal end and a distal end portion and defining a longitudinal
passageway therebetween and at least one retractor arm extending longitudinally
from the distal end portion of each sleeve member, each retractor arm defining a
first vertebra supporting surface and a second vertebra supporting surface, the first
and second vertebra supporting surfaces of each retractor arm being spaced thereon
at a predetermined distraction distance.
Claim 10
Dependent Claim
28 words
The surgical retractor according to claim 9 wherein the distal end of each elongated
member has two retractor arms, each arm having distal tapered portions for
facilitating insertion.
Claim 11
Dependent Claim
23 words
The surgical retractor according to claim 9 wherein the retractor arms each possess
distal tapered portions for facilitating insertion into the intervertebral space.
Claim 12
Dependent Claim
26 words
The surgical retractor according to claim 9, 10 or 11 wherein the first and second
supporting surfaces of each retractor arm are in general parallel relation.
Claim 13
Dependent Claim
31 words
The surgical retractor according to claim 12 wherein the first and second
supporting surfaces of each retractor arm are in general parallel relation to the
longitudinal axis of the elongate body.
Claim 14
Dependent Claim
34 words
The surgical retractor according to any one of claims 9 to 13 wherein each sleeve
member includes at least one longitudinal opening defined in an intermediate wall
portion thereof for reception of surgical instrumentation.
Claim 15
Dependent Claim
22 words
The surgical retractor according to any one of claims 9 to 14 wherein a distal
surface of each sleeve member is concave.
Claim 16
Dependent Claim
32 words
The surgical retractor according to any one of claims 9 to 15 including a spacer
member disposed between the first and second sleeve members to increase the
distance between the sleeve members.
Claim 17
Dependent Claim
24 words
The surgical retractor according to any one of claims 9 to 16 wherein the first and
second sleeve members are welded to each other.
Claim 18
Dependent Claim
22 words
The surgical retractor according to any one of claims 9 to 17 wherein the first and
second sleeve members are monolithically formed.
References Cited (Backward Citations)
US4328593A
Cited
US4501269A
Cited
US4877020A
Cited
US4878915A
Cited
US5358511A
Cited
WO1996027345A2
Cited
US4936851A
Cited
US5470334A
Cited
US5480403A
Cited
US5571109A
Cited
US5454811A
Cited
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