Granted Patent
B2
US 12,629,255 · App. 18/338,452 · Granted May 19, 2026
Hydrogel implants with porous materials and methods
Inventors:
Timothy J. Patrick (Roswell, GA); Carribeth B. Ramey (Suwanee, GA); Letitia Tudor (Suwanee, GA); Michael A. Axelrod (Roswell, GA)
Assignee:
STRYKER CORPORATION
A61F2/30756A61F2/3872A61B17/86A61F2002/30011A61F2002/30075A61F2002/3021A61F2002/30224A61F2002/30273A61F2002/30299A61F2002/30327A61F2002/30331A61F2002/30462A61F2002/305A61F2002/30579A61F2002/30761A61F2002/30841A61F2002/3085A61F2002/3092A61F2/3094A61F2/30942A61F2002/30957A61F2/4618A61F2310/00017A61F2310/00023A61F2310/00047A61F2310/00089A61F2310/00185
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Abstract
Provided is an implant configured for implantation in a bone segment, the implant including a first part that includes a hydrogel portion and a porous material portion, and a second part that includes an annular rim and a bottom that at least partially define a cavity configured to receive the porous material portion of the first part, and a barb extending from the bottom of the second part in a direction away from the cavity.
Claims (20)
1 . An implant configured for implantation in a bone segment, the implant comprising:
a first part that includes a hydrogel portion and a porous material portion; and
a second part comprising an annular rim and a bottom that at least partially define a cavity configured to receive the porous material portion of the first part, and a barb extending as an acute radially outward protrusion from the bottom of the second part in a direction away from the cavity, wherein the bottom of the second part comprises two or more holes and the barb is coupled to the second part by a wire extending through holes in the bottom of the second part and forming a knot within the cavity of the second part, wherein the wire enables the second part and the anchor to be drawn closer together by pulling on ends of the wire from inside the cavity, so that when the implant is implanted in the bone segment, the barb engages a hole formed in the bone segment to secure the implant.
2 . The implant of claim 1 , wherein the porous material portion has a generally annular configuration that surrounds a portion of the hydrogel portion.
3 . The implant of claim 1 , wherein the porous material portion is a solid disc.
4 . The implant of claim 1 , wherein the hydrogel is in pores of the porous material portion.
5 . The implant of claim 1 , wherein the barb and the second part are formed as a monolithic structure.
6 . The implant of claim 1 , wherein the barb is formed separately from remainder of the second part and is coupled to the remainder of the second part.
7 . The implant of claim 1 , wherein the second part is formed of a rigid material.
8 . The implant of claim 1 , wherein the barb is inwardly compressible when longitudinally advanced into the hole in the bone segment but configured to catch when longitudinally retracted from the hole in the bone segment.
9 . The implant of claim 1 , wherein the second part comprises a porous material.
10 . The implant of claim 1 , wherein the porous material portion comprises an annular groove and the cavity in the second part comprises at least one corresponding detent for engaging the annular groove when the porous material portion is received into the cavity.
11 . The implant of claim 10 , wherein the second part comprises a plurality of detents.
12 . The implant of claim 1 , wherein the groove is partially or fully annular.
13 . The implant of claim 1 , wherein the porous material portion comprises at least one detent and the second part comprises a corresponding groove.
14 . The implant of claim 13 , wherein the groove is partially or fully annular.
15 . An implant configured for implantation in a bone segment, the implant comprising:
a first part that includes a hydrogel portion and a porous material portion; and
a second part comprising an annular rim and a bottom that at least partially define a cavity configured to receive the porous material portion of the first part, and an anchor coupled to the bottom of the second part opposite from the cavity, wherein the bottom of the second part comprises two or more holes and the anchor is coupled to the second part by a wire extending through holes in the bottom of the second part and forming a knot within the cavity of the second part, wherein the wire enables the second part and the anchor to be drawn closer together by pulling on ends of the wire from inside the cavity, so that when the implant is implanted in the bone segment, the anchor engages a hole formed in the bone segment to secure the implant and the anchor comprises an insert and radially outwardly extending fingers, the fingers formed as cutouts from the anchor.
16 . The implant of claim 15 , wherein when the anchor is pushed into the hole in the bone segment, the fingers flex radially inwardly during advancement into the hole and flex radially outward to inhibit dislodgement from the hole.
Assignments (2)
NUNC PRO TUNC ASSIGNMENT
Recorded Nov 11, 2024
From: CARTIVA, INC.
To: STRYKER CORPORATION
Reel/Frame 069335/0614 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jun 21, 2023
From: PATRICK, TIMOTHY J.; RAMEY, CARRIBETH B.; TUDOR, LETITIA; AXELROD, MICHAEL A.
To: CARTIVA, INC.
Reel/Frame 064010/0806 →
Continuity (5)
Provisional Application
62141059
· Mar 31, 2015
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