Implant body with ring
AssigneesSignal Medical Corporation, Gerald J. Jerry, Jr.
InventorsLouis A. Serafin, Jr., Nicholas H. Burlingame, Gerald J. Jerry, Jr.
Life of this patent
Estimating the term…
Abstract
Implant body has a groove into which an outer ring is fitted. The body and ring are distinct solid parts both during and after assembly. A “flat” wall may be provided for the groove. The outer ring is annularly continuous and may be under tension, with the body under correspondent compression from the ring. An arthroplasty device can be provided.
Claims21
An arthroplasty device comprising, assembled, as distinct, solid parts both during and after assembly of the arthroplasty device therewith:
- a hard implant body of ceramic with a continuous circumferential groove about an outer portion of the implant body;
- and
- an outer ring, which is annularly continuous and fitted into the continuous circumferential groove of the implant body to reside there to provide the arthroplasty device;
- such that the outer ring is restrained from rotation in the continuous circumferential groove, and is bound under tension against the implant body to provide increased strength to the implant body.
An arthroplasty device comprising, assembled, as distinct, solid parts both during and after assembly of the arthroplasty device therewith:
- an implant body with a continuous circumferential groove about an outer portion of the implant body;
- and
- an outer ring, which is annularly continuous and fitted into the continuous circumferential groove of the implant body to reside there to provide the arthroplasty device;
- such that the outer ring is restrained from rotation in the continuous circumferential groove;
- and which further comprises:
- in the continuous circumferential groove of the implant body, at least one stop notch provided as an interruption in an otherwise annular protrusion in the continuous circumferential groove;
- and
- in the outer ring, at least one inner stop matching up with the at least one stop notch provided as an interruption in an otherwise annular protrusion in the continuous circumferential groove of the implant body, and an inner groove for fitting closely over the otherwise annular protrusion in the continuous circumferential groove of the implant body.
An arthroplasty device comprising, assembled, as distinct, solid parts both during and after assembly of the arthroplasty device therewith:
- a hard implant body of ceramic in a form of a cup, with a circumferential, simple, substantially flat wall about an outer portion of the implant body, which is of the same outer dimension as a convexly rounded portion of the implant body immediately adjacent it;
- and
- an outer ring, which is annularly continuous and fitted onto the circumferential simple substantially flat wall of the implant body and bound under tension against the implant body that is under correspondent compression from the outer ring so as to provide increased strength to the implant body and reside there to provide the arthroplasty device, which is useful in arthroplasty.
An arthroplasty device comprising, assembled, as distinct, solid parts both during and after assembly of the arthroplasty device therewith:
- an implant body with a circumferential, substantially flat wall about an outer portion of the implant body, which is of the same outer dimension as a convexly rounded portion of the implant body immediately adjacent it;
- and
- an outer ring, which is annularly continuous and fitted onto the circumferential, substantially flat wall of the implant body to reside there to provide the arthroplasty device,
- which further comprises:
- in the circumferential, substantially flat wall about an outer portion of the implant body, at least one stop notch provided as an interruption in an otherwise annular protrusion in the circumferential, substantially flat wall;
- and
- in the outer ring, at least one inner stop matching up with the at least one stop notch provided as an interruption in an otherwise annular protrusion in the circumferential, substantially flat wall of the implant body, and an inner groove for fitting closely over the otherwise annular protrusion in the circumferential, substantially flat wall of the implant body.
Dependencies are inferred from the claim text.