US20160045320A1
Active / In Force
US
⏱️ 8.8 years remaining
Variable hip resurfacing femoral implant
Assignee: RevOrtho LLC
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Filing: 2015-08-18
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Granted: —
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Expires: 2035-08-18
Abstract
Abstract A variable hip resurfacing implant which allows for varying configuration options to account for characteristics of underlying degenerative hip joint disease and for both un-cemented and cemented application. The variable hip resurfacing implant generally includes a femoral head portion, bearing surface, outer rim, inner planar surface, central stem, and a central stem threaded hole.
Inventors
- 👤 Craig Eric Klinger
- 👤 Jose Bernardo Toro Arbelaez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:48
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/32; A61F2/36; A61F2/3609; A61F2/3601; A61F2/3603; A61B; A61B17/00; A61B17/16; A61B17/1662; A61B17/1664; A61B17/1668; A61F2/30721; A61F2/30749; A61F2002/30001; A61F2002/30108; A61F2002/30199; A61F2002/30299; A61F2002/30316; A61F2002/30329; A61F2002/30433; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30774; A61F2002/365
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
64 words
1 . A variable hip resurfacing implant, comprising: a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile; and a central stem disposed at the underside of the cap portion, wherein the central stem includes threading at a base of the central stem configured to accommodate threaded attachments.
Claim 2
Dependent Claim
64 words
1 . A variable hip resurfacing implant, comprising: a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile; and a central stem disposed at the underside of the cap portion, wherein the central stem includes threading at a base of the central stem configured to accommodate threaded attachments.
Claim 3
Dependent Claim
46 words
2 . The variable hip resurfacing implant according to claim 1 , wherein the inner rim of the cap portion is configured such that it does not surround a femoral head cortex remaining above an articular rim of a femoral head upon seating of the implant.
Claim 4
Dependent Claim
44 words
3 . The variable hip resurfacing implant according to claim 1 , wherein the inner rim of the cap portion is configured such that it surrounds a femoral head cortex remaining above an articular rim of a femoral head upon seating of the implant.
Claim 5
Dependent Claim
46 words
4 . The variable hip resurfacing implant according to claim 1 , wherein the underside of the cap portion includes at least one implant threaded hole located between the central stem and the inner rim of the cap portion configured to attach to the threaded attachments.
Claim 6
Dependent Claim
37 words
5 . The variable hip resurfacing implant according to claim 1 , wherein the underside of the cap portion includes a central threaded hole configured to attach to a modular central stem or a modular central screw.
Claim 7
Dependent Claim
18 words
6 . The variable hip resurfacing implant according to claim 1 , wherein the central stem is removable.
Claim 8
Dependent Claim
25 words
7 . The variable hip resurfacing implant according to claim 1 , wherein the threading at the base of the central stem includes internal threading.
Claim 9
Dependent Claim
25 words
8 . The variable hip resurfacing implant according to claim 1 , wherein the threading at the base of the central stem includes external threading.
Claim 10
Dependent Claim
34 words
9 . The variable hip resurfacing implant according to claim 1 , wherein the central stem includes at least one external rib extending at least partially downward from the underside of the cap portion.
Claim 11
Dependent Claim
65 words
10 . The variable hip resurfacing implant according to claim 1 , wherein the underside of the cap portion includes at least one of (i) at least one surface configured to match at least one surface of the femoral head, (ii) at least one porous surface configured to promote bony ingrowth, or (iii) at least one threaded hole configured for attachment of the threaded attachments.
Claim 12
Dependent Claim
113 words
11 . The variable hip resurfacing implant according to claim 1 , further comprising at least one of: a central screw configured to extend from a lateral femoral shaft cortex of a proximal femur to the threading at the base of the central stem; a central cap configured to attach to the threading at the base of the central stem; at least one outer screw configured to extend from the lateral femoral shaft cortex of the proximal femur to the at least one threaded hole on the underside of the cap portion; or at least one outer peg attached to the at least one threaded hole on the underside of the cap portion.
Claim 13
Dependent Claim
25 words
12 . The variable hip resurfacing implant according to claim 1 , wherein the variable hip resurfacing implant is configured to be implanted with cement.
Claim 14
Dependent Claim
55 words
13 . The variable hip resurfacing implant according to claim 1 , further comprising at least one of: a plate situated at a lateral femoral shaft cortex of a proximal femur and having at least one hole through which at least one of (i) a central screw or (ii) at least one outer screw extends.
Claim 15
Dependent Claim
102 words
14 . A method for preparing a femoral head, a femoral neck and a proximal femur for implantation of a variable hip resurfacing implant, comprising: performing a cylindrical femoral head osteotomy, drilling a central bone channel through the femoral head and the femoral neck at least partially towards a lateral femoral shaft cortex of the proximal femur. implanting the variable hip resurfacing implant including a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile, and a central stem disposed at the underside of the cap portion.
Claim 16
Dependent Claim
102 words
14 . A method for preparing a femoral head, a femoral neck and a proximal femur for implantation of a variable hip resurfacing implant, comprising: performing a cylindrical femoral head osteotomy, drilling a central bone channel through the femoral head and the femoral neck at least partially towards a lateral femoral shaft cortex of the proximal femur. implanting the variable hip resurfacing implant including a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile, and a central stem disposed at the underside of the cap portion.
Claim 17
Dependent Claim
40 words
15 . The method according to claim 14 , wherein, following the cylindrical femoral head osteotomy, the cap portion does not surround a periphery of a cortex of the femoral head remaining above an articular rim of the femoral head.
Claim 18
Dependent Claim
119 words
16 . The method according to claim 14 , wherein the implanting of the variable hip resurfacing implant includes attaching at least one of: a central screw configured to extend from the lateral femoral shaft cortex of the proximal femur to the threading at the base of the central stem; a central cap configured to attach to the threading at the base of the central stem; at least one outer screw configured to extend from the lateral femoral shaft cortex of the proximal femur to the at least one threaded hole on the underside of the cap portion; or at least one outer peg attached to the at least one threaded hole on the underside of the cap portion.
Claim 19
Dependent Claim
59 words
17 . The method according to claim 16 , wherein the implanting of the variable hip resurfacing implant further includes: placing a plate at the lateral femoral shaft cortex of the proximal femur, the plate having at least one hole through which at least one of (i) the central screw or (ii) the at least one outer screw extends.
Claim 20
Dependent Claim
27 words
18 . The method according to claim 14 , wherein the central stem includes threading at a base of the central stem configured to accommodate threaded attachments.
Claim 21
Dependent Claim
42 words
19 . The method according to claim 14 , wherein the underside of the cap portion includes at least one implant threaded hole located between the central stem and the inner rim of the cap portion configured to attach to threaded attachments.
Claim 22
Dependent Claim
108 words
20 . A method for preparing a femoral head, a femoral neck and a proximal femur for implantation of a variable hip resurfacing implant, comprising: performing a proximal femoral head osteotomy without a cylindrical femoral head osteotomy, drilling a central bone channel through the femoral head and the femoral neck at least partially towards a lateral femoral shaft cortex of the proximal femur. implanting the variable hip resurfacing implant including a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile, and a central stem disposed at the underside of the cap portion.
Claim 23
Dependent Claim
108 words
20 . A method for preparing a femoral head, a femoral neck and a proximal femur for implantation of a variable hip resurfacing implant, comprising: performing a proximal femoral head osteotomy without a cylindrical femoral head osteotomy, drilling a central bone channel through the femoral head and the femoral neck at least partially towards a lateral femoral shaft cortex of the proximal femur. implanting the variable hip resurfacing implant including a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile, and a central stem disposed at the underside of the cap portion.
Claim 24
Dependent Claim
38 words
21 . The method according to claim 20 , wherein, following the proximal femoral head osteotomy, the cap portion surrounds a periphery of a cortex of the femoral head remaining above an articular rim of the femoral head.
Claim 25
Dependent Claim
119 words
22 . The method according to claim 20 , wherein the implanting of the variable hip resurfacing implant includes attaching at least one of: a central screw configured to extend from the lateral femoral shaft cortex of the proximal femur to the threading at the base of the central stem; a central cap configured to attach to the threading at the base of the central stem; at least one outer screw configured to extend from the lateral femoral shaft cortex of the proximal femur to the at least one threaded hole on the underside of the cap portion; or at least one outer peg attached to the at least one threaded hole on the underside of the cap portion.
Claim 26
Dependent Claim
59 words
23 . The method according to claim 20 , wherein the implanting of the variable hip resurfacing implant further includes: placing a plate at the lateral femoral shaft cortex of the proximal femur, the plate having at least one hole through which at least one of (i) the central screw or (ii) the at least one outer screw extends.
Claim 27
Dependent Claim
27 words
24 . The method according to claim 20 , wherein the central stem includes threading at a base of the central stem configured to accommodate threaded attachments.
Claim 28
Dependent Claim
42 words
25 . The method according to claim 20 , wherein the underside of the cap portion includes at least one implant threaded hole located between the central stem and a central rim of the cap portion configured to attach to threaded attachments.
Claim 29
Dependent Claim
68 words
26 . A variable hip resurfacing implant, comprising: a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile; and wherein the underside of the cap portion includes at least one implant threaded hole located between a central stem and the inner rim of the cap portion configured for attachment of threaded attachments.
Claim 30
Dependent Claim
68 words
26 . A variable hip resurfacing implant, comprising: a cap portion having an inner rim disposed along a periphery of an underside of the cap portion, wherein the inner rim has a non-stepped profile; and wherein the underside of the cap portion includes at least one implant threaded hole located between a central stem and the inner rim of the cap portion configured for attachment of threaded attachments.
Claim 31
Dependent Claim
26 words
27 . The variable hip resurfacing implant according to claim 26 , wherein the central stem includes internal threading at a base of the central stem.
Claim 32
Dependent Claim
26 words
28 . The variable hip resurfacing implant according to claim 26 , wherein the central stem includes external threading at a base of the central stem.
Claim 33
Dependent Claim
27 words
29 . The variable hip resurfacing implant according to claim 26 , wherein the central stem does not include threading at a base of the central stem.
References Cited (Backward Citations)
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Cited
US20100049329A1
Cited
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