IP Library › Patent Application 18950104
Patent Application
App. No. 18/950,104

HUMERAL ARTHROPLASTY

Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US None
App. No.
18/950,104
Abstract

Arthroplasty components include an articular surface and a bone-facing surface. The bone-facing surface includes a concave arrangement of planar surfaces which converge as they approach a middle portion of the articular surface. Instruments and implantation methods are also disclosed.

Claims (25)

1 . An arthroplasty implant to replace at least a portion of an articular head of a bone for joint arthroplasty, comprising:

a convex articular surface; and

a bone-facing side opposite the articular surface, wherein the bone-facing side comprises a socket comprising first and second side walls on opposite sides of the socket, wherein the first and second side walls intersect each other to form an edge that extends between first and second ends;

wherein the first and second side walls intersect the articular surface to establish an articular margin of the implant;

wherein the socket comprises a maximum depth measured from the articular margin, wherein the edge lies along the maximum depth of the socket.

2 . The arthroplasty implant of claim 1 , wherein when the arthroplasty implant is implanted to replace a portion of a humeral head, the edge extends along a superior-inferior direction, the first side wall covers an anterior aspect of the humeral head, and the second side wall covers a posterior aspect of the humeral head.

3 . The arthroplasty implant of claim 1 , wherein the socket comprises third and fourth side walls on opposite sides of the socket between the first and second side walls, wherein a total area of the third side wall is less than a total area of the fourth side wall.

4 . The arthroplasty implant of claim 3 , wherein when the arthroplasty implant is implanted to replace a portion of a humeral head, the edge extends along a superior-inferior direction, the first side wall covers an anterior aspect of the humeral head, the second side wall covers a posterior aspect of the humeral head, the third side wall covers a superior aspect of the humeral head, and the fourth side wall covers an inferior aspect of the humeral head.

5 . The arthroplasty implant of claim 3 , wherein at least one peg protrudes from each of the first, second, third, and fourth side walls.

6 . An arthroplasty implant to replace at least a portion of an articular head of a bone for joint arthroplasty, comprising:

a convex articular surface; and

a concave bone-facing side opposite the articular surface, wherein the bone-facing side comprises a concave arrangement of first, second, and third planar side walls;

wherein a total surface area of the first side wall is less than a total surface area of the second side wall;

wherein the total surface area of the second side wall is less than a total surface area of the third side wall.

7 . The arthroplasty implant of claim 6 , wherein when the arthroplasty implant is implanted to replace a portion of a humeral head, the first side wall covers a superior aspect of the humeral head, the second side wall covers an inferior aspect of the humeral head, and the third side wall covers an anterior aspect of the humeral head.

8 . The arthroplasty implant of claim 6 , wherein the concave arrangement includes a fourth planar side wall.

9 . The arthroplasty implant of claim 8 , wherein when the arthroplasty implant is implanted to replace a portion of the humeral head, the first side wall covers a superior aspect of the humeral head, the second side wall covers an inferior aspect of the humeral head, the third side wall covers an anterior aspect of the humeral head, and the fourth side wall covers a posterior aspect of the humeral head.

10 . The arthroplasty implant of claim 8 , wherein a total surface area of the third side wall is equal to a total surface area of the fourth side wall.

11 . An arthroplasty implant to replace at least a portion of an articular head of a bone for joint arthroplasty, comprising:

a convex articular surface that is spherical, ellipsoidal, or ovoid; and

a bone-facing side opposite the articular surface, wherein the bone-facing side comprises a socket comprising first and second side walls on opposite sides of the socket, wherein the first side wall is a different size than the second side wall.

12 . The arthroplasty implant of claim 11 , wherein the first side wall is smaller than the second side wall.

13 . The arthroplasty implant of claim 12 , wherein when the arthroplasty implant is implanted to replace a portion of a humeral head, the first side wall covers a superior aspect of the humeral head and the second side wall covers an inferior aspect of the humeral head.

14 . The arthroplasty implant of claim 12 , wherein the socket comprises third and fourth side walls on opposite sides of the socket between the first and second side walls, wherein the third and fourth side walls intersect each other to form an interior corner.

15 . The arthroplasty implant of claim 14 , wherein when the arthroplasty implant is implanted to replace a portion of a humeral head, the first side wall covers a superior aspect of the humeral head, the second side wall covers an inferior aspect of the humeral head, the third side wall covers an anterior aspect of the humeral head, the fourth side wall covers a posterior aspect of the humeral head, and the interior corner extends along a superior-inferior direction between a superior end and an inferior end.