Patent US5263987A successfully refreshed from Google Patents.
US5263987A
Expired / Lapsed
US
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Method and apparatus for arthroscopically replacing a bone joint
Assignee: Individual
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Filing: 1991-05-28
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Granted: 1993-11-23
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Expires: 2011-05-28
Abstract
Abstract A method and apparatus for arthroscopically replacing a joint between two bones utilizes a plurality of joint surface members which are attached to a prepared surface arthroscopically formed on the end of a bone, and the joint surface members are inserted through an arthroscopic portal adjacent to the joint to be repaired.
Inventors
- 👤 Mrugesh K. Shah
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/38; A61F2/30721; A61F2/32; A61F2/34; A61F2/36; A61F2/3601; A61F2/3603; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61F2/30767; A61F2/3094; A61F2/30965; A61F2/3877; A61F2/30771; A61F2002/30878; A61F2002/30891; A61F2002/30892; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/908
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
334 words
An apparatus for arthroscopically replacing a joint between two bones, each bone having at least one prepared surface formed thereon, at least one of the prepared surfaces of each bone being disposed opposite each other in a spaced relationship, comprising: a plurality of joint surface members, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; a second plurality of joint surface members, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; the upper bearing surfaces of the first plurality of joint surface members adapted to be attached to one bone having a concave configuration, and the upper bearing surfaces of the second plurality of joint surface members adapted to be attached to the oppositely disposed bone having a convex configuration, whereby opposing upper bearing surfaces are matingly received within one another; first means for attaching the first plurality of joint surface members to a prepared bone surface, he first attachment means being located at the lower surface of each joint surface member of the first plurality of joint surface members; second means for attaching the second plurality of joint surface members to a prepared bone surface, the second attachment means located at the lower surface of each joint surface member of the second plurality of joint surface members; each of the joint surface members of the first and second plurality of joint surface members having three external dimensions including height, width, and length, and at least two of the external dimensions of each joint surface member is equal to, or less than, one centimeter, whereby the joint surface members may be passed through an arthroscopic portal adjacent to the joint and the first plurality of joint surface members may be attached to one prepared bone surface and the second plurality of joint surface members may be attached to an oppositely disposed bone surface to form a replacement joint between the two bones.
Claim 2
Independent Claim
334 words
An apparatus for arthroscopically replacing a joint between two bones, each bone having at least one prepared surface formed thereon, at least one of the prepared surfaces of each bone being disposed opposite each other in a spaced relationship, comprising: a plurality of joint surface members, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; a second plurality of joint surface members, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; the upper bearing surfaces of the first plurality of joint surface members adapted to be attached to one bone having a concave configuration, and the upper bearing surfaces of the second plurality of joint surface members adapted to be attached to the oppositely disposed bone having a convex configuration, whereby opposing upper bearing surfaces are matingly received within one another; first means for attaching the first plurality of joint surface members to a prepared bone surface, he first attachment means being located at the lower surface of each joint surface member of the first plurality of joint surface members; second means for attaching the second plurality of joint surface members to a prepared bone surface, the second attachment means located at the lower surface of each joint surface member of the second plurality of joint surface members; each of the joint surface members of the first and second plurality of joint surface members having three external dimensions including height, width, and length, and at least two of the external dimensions of each joint surface member is equal to, or less than, one centimeter, whereby the joint surface members may be passed through an arthroscopic portal adjacent to the joint and the first plurality of joint surface members may be attached to one prepared bone surface and the second plurality of joint surface members may be attached to an oppositely disposed bone surface to form a replacement joint between the two bones.
Claim 3
Dependent Claim
26 words
The apparatus of claim 1, wherein the first and second attachment means are a staple member associated with the lower surface of the joint surface members.
Claim 4
Dependent Claim
15 words
The apparatus of claim 1 wherein, the first and second attachment means are bone cement.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1, wherein the first and second attachment means include a porous coating into which the bone may grow.
Claim 6
Dependent Claim
76 words
The apparatus of claim 1, wherein at least one of the attachment means includes a plurality of scaffold members upon which are disposed the plurality of joint surface members, the scaffold members having an upper and a lower surface, the lower surface of each joint surface member being disposed upon an upper surface of one of the scaffold members, and the lower surface of each scaffold member is adapted to be attached a prepared bone surface.
Claim 7
Dependent Claim
39 words
The apparatus of claim 5, wherein each scaffold member has three external dimensions, including height, width and length, and at least two of the three external dimensions of each scaffold member is equal to, or less than, one centimeter.
Claim 8
Dependent Claim
24 words
The apparatus of claim 5, wherein the scaffold members include a positioning means which cooperates with a mating surface on each joint surface member.
Claim 9
Dependent Claim
13 words
The apparatus of claim 5, wherein the scaffold members are integral elongate members.
Claim 10
Dependent Claim
27 words
The apparatus of claim 5, wherein the scaffold members are elongate members formed of connected segments, and include means for connecting the segments of the scaffold members.
Claim 11
Dependent Claim
51 words
The apparatus of claim 5, wherein one of the bones is a femur having a plurality of planar thereon and the scaffold members which are adapted for attachment to the planar surfaces of the femur have a U-shaped configuration which conforms to the shape of the prepared surfaces on the femur.
Claim 12
Dependent Claim
29 words
The apparatus of claim 5, wherein the upper bearing surface of each joint surface member is formed as an integral part of the upper surface of each scaffold member.
Claim 13
Dependent Claim
29 words
The apparatus of claim 1, wherein the upper bearing surface is formed integral with each joint surface member of at least one of the plurality of joint surface members.
Claim 14
Dependent Claim
37 words
The apparatus of claim 1, wherein the upper bearing surface of each joint surface member of at least one of the plurality of joint surface members is a cap member fixedly secured to the joint surface member.
Claim 15
Dependent Claim
29 words
The apparatus of claim 1, wherein the cross-sectional configuration of some of the joint surface members of at least one of the plurality of joint surface members is circular.
Claim 16
Dependent Claim
29 words
The apparatus of claim 1, wherein the cross-sectional configuration of some of the joint surface members of at least one of the plurality of joint surface members is triangular.
Claim 17
Dependent Claim
29 words
The apparatus of claim 1, wherein the cross-sectional configuration of some of the joint surface members of at least one of the plurality of joint surface members is rectangular.
Claim 18
Dependent Claim
29 words
The apparatus of claim 1, wherein the cross-sectional configuration, of some of the joint surface members of at least one of the plurality of joint surface members is hexagonal.
Claim 19
Dependent Claim
28 words
The apparatus of claim 1, wherein the upper bearing surfaces of each joint surface member of at least one of the plurality of joint surface members is planar.
Claim 20
Dependent Claim
52 words
The apparatus of claim 1, wherein the joint surface members of at least one of the plurality of joint surface members are elongate members which have a generally semi-circular configuration, and are adapted to be attached to an arthroscopically prepared bone surface on the head of a femur and within an acetabulum.
Claim 21
Independent Claim
158 words
A method for arthroscopically replacing a joint between two bones, comprising the steps of: forming a plurality of arthroscopic portals adjacent the joint; inserting an arthroscope through one of the arthroscopic portals; arthroscopically preparing at least one surface on each bone, with at least one of the prepared surfaces of each bone being disposed opposite each other in a spaced relationship; inserting a plurality of joint surface members through at least some of the arthroscopic portals, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; attaching the plurality of joint surface members to the prepared bone surfaces to cover a substantial portion of each prepared bone surface, whereby a replacement joint between the two bones is formed by the upper bearing surfaces of the joint surface members, which upper bearing surfaces abut oppositely disposed upper bearing surfaces as one bone moves with respect to the other bone.
Claim 22
Independent Claim
158 words
A method for arthroscopically replacing a joint between two bones, comprising the steps of: forming a plurality of arthroscopic portals adjacent the joint; inserting an arthroscope through one of the arthroscopic portals; arthroscopically preparing at least one surface on each bone, with at least one of the prepared surfaces of each bone being disposed opposite each other in a spaced relationship; inserting a plurality of joint surface members through at least some of the arthroscopic portals, each joint surface member including an upper bearing surface formed of a bio-compatible, low friction material, and a lower surface; attaching the plurality of joint surface members to the prepared bone surfaces to cover a substantial portion of each prepared bone surface, whereby a replacement joint between the two bones is formed by the upper bearing surfaces of the joint surface members, which upper bearing surfaces abut oppositely disposed upper bearing surfaces as one bone moves with respect to the other bone.
Claim 23
Dependent Claim
40 words
The method of claim 20, including the step of: inserting a plurality of scaffold members through some of the arthroscopic portals; attaching the scaffold members to the prepared bone surfaces; and attaching the joint surface members to the scaffold members.
Claim 24
Dependent Claim
59 words
The method of claim 21, wherein one of the bones is a femur, further including the step of: arthroscopically forming a plurality of planar surfaces on the femur in a J-shaped configuration; attaching a plurality of J, C, or U-shaped scaffold members to the femur planar surfaces; and attaching a plurality of joint surface members to the scaffold members.
Claim 25
Dependent Claim
41 words
The method of claim 21, including the steps of utilizing the scaffold members as the joint surface members, and forming the upper bearing surface of the joint surface members as an integral part of an upper surface of each scaffold member.
Claim 26
Dependent Claim
85 words
The method of claim 20, including the steps of: forming the upper bearing surfaces from a single block of bearing surface material having a shape approximating the shape of the prepared bone surface to be covered; disposing the upper bearing surfaces upon the prepared bone surface in the same location and orientation the upper bearing surfaces originally had with respect to the block of bearing surface material, whereby the plurality of upper bearing surfaces form a substantially continuous bearing surface on the prepared bone surface.
Claim 27
Dependent Claim
30 words
The method of claim 24, including the step of utilizing a block of bearing surface material which has a planar lower surface and either a concave or convex upper surface.
Claim 28
Dependent Claim
83 words
The method of claim 23, including the steps of: forming the scaffold members from a single block of bearing surface material having a shape approximating the shape of the prepared bone surface to be covered; disposing the scaffold members upon the prepared bone surface in the same location and orientation the scaffold members originally had with respect to the block of bearing surface material, whereby the upper surfaces of the scaffold members form a substantially continuous bearing surface on the prepared bone surface.
Claim 29
Dependent Claim
53 words
The method of claim 20, including the steps of: utilizing a plurality of elongate joint surface members which have a generally semi-circular configuration; arthroscopically attaching a plurality of the joint surface members upon a prepared bone surface on a head of a femur and within an acetabulum to form a replacement hip joint.
Claim 30
Dependent Claim
22 words
The apparatus of claim 1, wherein the attachment means is a screw associated with the lower surface of the joint surface members.
Claim 31
Dependent Claim
22 words
The apparatus of claim 1, wherein the attachment means is a pin associated with the lower surface of the joint surface members.
Claim 32
Dependent Claim
22 words
The apparatus of claim 1, wherein the attachment means is a nail associated with the lower surface of the joint surface members.
Claim 33
Dependent Claim
13 words
The apparatus of claim 1, wherein the attachment means is a bio-compatible glue.
Claim 34
Dependent Claim
53 words
The apparatus of claim 5, wherein one of the bones is a femur having a plurality of planar bone surfaces thereon and the scaffold members which are adapted for attachment to the planar surfaces of the femur have a J-shaped configuration which conforms to the shape of the prepared surfaces on the femur.
Claim 35
Dependent Claim
53 words
The apparatus of claim 5, wherein one of the bones is a femur having a plurality of planar bone surfaces thereon and the scaffold members which are adapted for attachment to the planar surfaces of the femur have a C-shaped configuration which conforms to the shape of the prepared surfaces on the femur.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |