EP0612509A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Adjustable prosthetic socket component for articulating anatomical joints
Assignee: LENNOX, DENNIS W.
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Filing: 1994-02-22
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Granted: —
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Expires: 2014-02-22
Abstract
Abstract A prosthetic socket component (12) for articulating anatomical joints includes a shell member (16) for being affixed to a first bone of the joint and a liner (20) to be received in a cavity (18) of the shell member (16) through an opening (26) in the shell member (16) communicating with the cavity (18). The cavity (18) has a longitudinal axis that is angularly offset from a longitudinal axis of the shell member (16), and the liner (20) is rotatable relative to the shell member (16) about the cavity axis to change the size of an angle made by a socket opening (60) in the liner (20) with the cavity opening (26). A method of implanting a prosthetic socket component (12) includes the step of aligning a portion of the liner (20) with one of a plurality of portions of the shell member (16) to position the socket opening (60) a predetermined angular distance from the cavity opening (26). An introducer (72) for the prosthetic socket component (12) includes a handle (74) and a head (76) for being received in the cavity (18) with a longitudinal axis of the handle (74) aligned with the shell member longitudinal axis. A system for implanting a prosthetic socket component (12) includes the shell member (16), the introducer (72) and the liner (20) with the liner (20) being mounted for rotation relative to the shell member (16) to change the magnitude of the socket opening angle.
Inventors
- 👤 Lennox D.W.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 05:41
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/34; A61F2/46; A61F2/4603; A61F2/4609; A61F2/4684; A61F2/30767; A61F2/30771; A61F2/36; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/3009; A61F2002/30316; A61F2002/30317; A61F2002/30324; A61F2002/30329; A61F2002/30331; A61F2002/30354; A61F2002/30357; A61F2002/30378; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/3054; A61F2002/30617; A61F2002/30667; A61F2002/3071; A61F2002/3443; A61F2002/3453; A61F2002/3454; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2250/00; A61F2250/0004; A61F2250/0006; A61F2250/0014; A61F2250/0036; A61F2250/0058; A61F2250/0085; A61F2250/0089; A61F2250/0091; A61F2250/0096; A61F2250/0097; A61F2310/00; A61F2310/00005; A61F2310/00011; A61F2310/00023; A61F2310/00029
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
92 words
A prosthetic socket component for articulating anatomical joints comprising: a shell member for being secured to a first bone of the joint and having a cavity with an opening to said cavity disposed in a first plane; and a liner for being received in said cavity and having a socket with an opening contained in a second plane, said liner being receivable in said cavity with said second plane disposed at an angle with said first plane and being movable relative to said shell member to change the size of said angle.
Claim 2
Dependent Claim
45 words
A prosthetic socket component as recited in claim 1 wherein said shell member includes an outer surface for being affixed to the first bone of the joint, said outer surface terminating at a forward edge disposed in said first plane and circumscribing said cavity opening.
Claim 3
Dependent Claim
107 words
A prosthetic socket component as recited in claim 2 wherein said cavity includes a longitudinal axis, a forward cavity section, an intermediate cavity section and an end cavity section and said forward cavity section has a length extending from said forward edge to a platform in said shell member, said platform being contained in a plane disposed at an angle with said first plane, said length tapering about said cavity axis from a maximum length where the angular distance between said first plane and said second plane is greatest to a minimum length where the angular distance between said first plane and said second plane is smallest.
Claim 4
Dependent Claim
84 words
A prosthetic socket component as recited in claim 3 wherein said liner includes a longitudinal axis, a mounting end for being received in said intermediate and end cavity sections and a hood joined to said mounting end and containing said socket opening, said hood having a portion for being received in said forward cavity section, said portion having a thickness that tapers around said liner axis from a maximum thickness corresponding to said maximum length and a minimum thickness corresponding to said minimum length.
Claim 5
Dependent Claim
99 words
A prosthetic socket component as recited in claim 4 wherein said liner is movable relative to said shell member between a neutral position wherein said portion of said hood is received in said forward cavity section with said maximum thickness aligned with said maximum length and said second plane is disposed at a minimum angle with said first plane and an extreme position wherein said portion of said hood is received in said forward cavity section with said maximum thickness aligned with said minimum length and said second plane is disposed at a maximum angle with said first plane.
Claim 6
Dependent Claim
41 words
A prosthetic socket component as recited in claim 5 and further including a reference mark on said liner and first and second indicia markings on said shell member for alignment with said reference mark in said neutral and extreme positions, respectively.
Claim 7
Dependent Claim
59 words
A prosthetic socket component as recited in claim 6 wherein said liner is movable relative to said shell member to a first intermediate position between said neutral and extreme positions and wherein said second plane is disposed at a first intermediate angle with said first plane that is larger than said minimum angle and smaller than said maximum angle.
Claim 8
Dependent Claim
63 words
A prosthetic socket component as recited in claim 7 wherein said liner is movable relative to said shell member to a second intermediate position between said first intermediate position and said extreme position and wherein said second plane is disposed at a second intermediate angle with said first plane that is larger than said first intermediate angle and smaller than said maximum angle.
Claim 9
Dependent Claim
35 words
A prosthetic socket component as recited in claim 8 and further including third and forth indicia markings on said shell member for alignment with said reference mark in said first and second intermediate positions, respectively.
Claim 10
Dependent Claim
108 words
A prosthetic socket component for articulating anatomical joints comprising: a shell member for being secured to a first bone of the joint and having a longitudinal axis and a cavity with an opening disposed in a plane perpendicular to said axis; and a liner for being received in said cavity and having a socket with an opening for receiving a ball secured to a second bone of the joint, said liner being rotatable relative to said shell member about an axis angularly offset from said shell member longitudinal axis to position said socket opening at a selected one of a plurality of predetermined angular distances from said plane.
Claim 11
Dependent Claim
52 words
A prosthetic socket component as recited in claim 10 wherein said cavity includes a longitudinal axis and said liner includes a longitudinal axis and a portion for being received in said cavity with said liner longitudinal axis aligned with said cavity axis and said cavity axis aligned with said axis of rotation.
Claim 12
Dependent Claim
45 words
A prosthetic socket component as recited in claim 11 wherein said shell member includes an outer surface terminating at a forward rim disposed in said plane and surrounding said cavity opening and said liner portion includes a rim to fit within said shell member rim.
Claim 13
Dependent Claim
70 words
A prosthetic socket component as recited in claim 12 wherein said socket opening is contained in a plane and said liner is rotatable relative to said shell member between a neutral position wherein said socket opening plane is positioned a predetermined minimum angular distance from said cavity opening plane and an extreme position wherein said socket opening plane is positioned a maximum predetermined angular distance from said cavity opening plane.
Claim 14
Dependent Claim
30 words
A prosthetic socket component as recited in claim 13 wherein said liner rim is disposed in a plane substantially in line with said cavity opening plane in said neutral position.
Claim 15
Dependent Claim
33 words
A prosthetic socket component as recited in claim 14 wherein said liner rim bisects said plane of said cavity opening when said liner is moved from said neutral position toward said extreme position.
Claim 16
Dependent Claim
47 words
A prosthetic socket component as recited in claim 15 wherein said liner includes a portion protruding beyond said cavity opening plane in said neutral position and part of said protruding portion enters said cavity when said liner is moved from said neutral position toward said extreme position.
Claim 17
Dependent Claim
36 words
A prosthetic socket component as recited in claim 16 wherein said part of said protruding portion that enters said cavity increases in size as said liner is moved from said neutral position toward said extreme position.
Claim 18
Dependent Claim
23 words
A prosthetic socket component as recited in claim 17 wherein said liner is rotatable 180° from said neutral position to said extreme position.
Claim 19
Dependent Claim
42 words
A prosthetic socket component as recited in claim 18 wherein said liner is rotatable approximately 60° from said neutral position to a first intermediate position wherein said socket opening plane is positioned a first intermediate angular distance from said cavity opening plane.
Claim 20
Dependent Claim
42 words
A prosthetic socket component as recited in claim 19 wherein said liner is rotatable approximately 120° from said neutral position to a second intermediate position wherein said socket opening plane is positioned a second intermediate angular distance from said cavity opening plane.
Claim 21
Dependent Claim
62 words
A prosthetic socket component as recited in claim 20 wherein said angular distance between said socket opening plane and said cavity opening plane increases by increments of 5° as said liner is rotated from said neutral position to said first intermediate position, from said first intermediate position to said second intermediate position and from said second intermediate position to said extreme position.
Claim 22
Dependent Claim
147 words
A prosthetic socket component as recited in claim 10 and further including an introducer for positioning said shell member on a surface of the first bone of the joint, said introducer including a retaining member for being received in said cavity and a handle coupled with said retaining member, said retaining member having a longitudinal axis and said handle having a longitudinal axis angularly offset from said retaining member axis with an angular offset that is the same as the angular offset for said shell member longitudinal axis with said axis of rotation, said retaining member being receivable in said cavity with said retaining member longitudinal axis aligned with said axis of rotation and said handle longitudinal axis aligned with said shell member longitudinal axis to allow said shell member to be inserted on the bone surface in a direction of insertion aligned with said handle axis.
Claim 23
Dependent Claim
106 words
A prosthetic hip joint comprising: a ball member for being secured at the upper end of the femur; a shell member for being secured to the acetabulum and having an opening therein communicating with a cavity; and a liner for being received in said cavity through said opening with a portion of said liner angularly protruding beyond said cavity opening, said liner having a socket with an opening in said protruding portion for receiving said ball member, said liner being adjustable to change the angular distance that said protruding portion protrudes beyond said cavity opening to selectively position said socket opening relative to said ball member.
Claim 24
Dependent Claim
80 words
A prosthetic hip joint as recited in claim 23 wherein said shell member includes a rim circumscribing said cavity opening, said cavity includes a forward cavity section, an intermediate cavity section and an end cavity section and said liner includes a mounting end for being received in said intermediate and end cavity sections and a hood having a rear portion for being received in said forward cavity section, said protruding portion extending forwardly from said rear portion of said hood.
Claim 25
Dependent Claim
45 words
A prosthetic hip joint as recited in claim 24 wherein said protruding portion is joined to said rear portion at a rim contained in a plane and said socket opening is contained in a plane disposed at an angle with said plane of said rim.
Claim 26
Dependent Claim
49 words
A prosthetic hip joint as recited in claim 25 wherein said liner rim is substantially aligned with said rim of said shell member in a neutral position wherein said angular distance corresponds to the angle between said plane of said socket opening and said plane of said cavity opening.
Claim 27
Dependent Claim
73 words
A prosthetic hip joint as recited in claim 26 wherein said forward cavity section extends from said plane of said cavity opening to a platform in said shell member, said platform being contained in a plane disposed at an angle with said cavity opening plane, said liner being rotatable relative to said shell member about an axis perpendicular to said plane of said platform to change the angular distance for said protruding portion.
Claim 28
Dependent Claim
34 words
A prosthetic hip joint as recited in claim 27 wherein said plane of said socket opening in said neutral position is disposed at an angle of 5° with said plane of said cavity opening.
Claim 29
Dependent Claim
30 words
A prosthetic hip joint as recited in claim 28 wherein said plane of said platform is disposed at an angle of approximately 7½° with said plane of said cavity opening.
Claim 30
Dependent Claim
97 words
An introducer for use with a prosthetic socket component having a longitudinal axis and a cavity having a longitudinal axis disposed at an angle with said socket component longitudinal axis, said introducer comprising: a handle for being grasped by a surgeon and having a longitudinal axis; and a head joined to said handle for being received in the cavity of the socket component, said head having a longitudinal axis disposed at an angle with said handle axis to permit said head to be received in the cavity with said handle axis aligned with the socket component axis.
Claim 31
Dependent Claim
37 words
An introducer as recited in claim 30 wherein said angle that said head axis is disposed with said handle axis is the same as the angle that the socket component axis is disposed with the cavity axis.
Claim 32
Dependent Claim
20 words
An introducer as recited in claim 31 wherein said head has a configuration complementary to the configuration of the cavity.
Claim 33
Dependent Claim
30 words
An introducer as recited in claim 32 wherein said handle is manually rotatable by the surgeon about said handle axis to rotate the socket component about the socket component axis.
Claim 34
Independent Claim
131 words
A method of implanting a prosthetic socket component in joint surgery comprising the steps of: introducing a shell member of a prosthetic socket component on a first bone of the joint; inserting a liner of the prosthetic socket component in a cavity of the shell member through an opening in the shell member leading to the cavity; aligning a portion of the liner with one of a plurality of portions of the shell member to position a socket opening in the liner at a predetermined angular distance from the cavity opening corresponding to the portion of the shell member with which the portion of the liner is aligned; and inserting a ball component secured to a second bone of the joint in a socket of the liner through the socket opening.
Claim 35
Dependent Claim
27 words
A method as recited in claim 34 wherein the cavity includes a longitudinal axis and said step of aligning includes dialing the liner about the cavity axis.
Claim 36
Dependent Claim
40 words
A method as recited in claim 35 wherein the liner includes a reference mark and the shell includes at least one indicia mark and said step of aligning includes aligning the reference mark with the at least one indicia mark.
Claim 37
Dependent Claim
57 words
A method as recited in claim 36 wherein the shell includes a longitudinal axis disposed at an angle with the cavity axis and further including, prior to said introducing step, the step of mounting the shell upon an introducer with a longitudinal axis of a handle of the introducer aligned with the longitudinal axis of the shell.
Claim 38
Dependent Claim
31 words
A method as recited in claim 37 wherein said step of introducing includes introducing the shell on the bone surface with the introducer in a direction aligned with the handle axis.
Claim 39
Dependent Claim
50 words
A method as recited in claim 38 and further including, after said dialing step, the step of redialing the liner to align the portion of the liner with another of the plurality of portions of the shell to position the socket opening another predetermined angular distance from the cavity opening.
Claim 40
Dependent Claim
21 words
A method as recited in claim 34 wherein said step of aligning includes the step of increasing anteversion of the liner.
Claim 41
Dependent Claim
21 words
A method as recited in claim 34 wherein said step of aligning includes the step of increasing retroversion of the liner.
Claim 42
Independent Claim
207 words
A system for implanting a prosthetic socket component in the body during joint surgery comprising: a shell member for being secured to a first bone of the joint and having a longitudinal axis, a cavity with a longitudinal axis disposed at an angle with said shell member axis and an opening leading to said cavity; an introducer for positioning said shell member on the first bone of the joint and having a handle with a longitudinal axis and a head joined to said handle, said head being receivable in said cavity to mount said shell member upon said introducer with said handle axis aligned with said shell member axis, said head being removable from said cavity upon said shell member being positioned by said introducer on the first bone of the joint; and a liner for being inserted in said cavity through said opening upon said shell member being positioned on the first bone of the joint and said head being removed from said cavity, said liner having a socket with an opening disposed at an angle with said cavity opening when said liner is inserted in said cavity, said liner being mounted for rotation relative to said shell member to change the magnitude of said angle.
Claim 43
Dependent Claim
39 words
The system as recited in claim 42 and further including a ball member for being secured to a second bone of the joint and having a configuration to permit said ball member to be movably mounted in said socket.
References Cited (Backward Citations)
No citation records indexed.
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