IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0148842
(1998-09-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
52 인용 특허 :
3 |
초록
▼
Modular ball and socket joint has 1) a cupped ball head, preferably of ceramic, having a support body with an inferior, deep, distally facing, preferably generally planar, surface having a substantially circular outer boundary thereto; a distally opening stem receiving bore preferably centrally loca
Modular ball and socket joint has 1) a cupped ball head, preferably of ceramic, having a support body with an inferior, deep, distally facing, preferably generally planar, surface having a substantially circular outer boundary thereto; a distally opening stem receiving bore preferably centrally located in the support body; a cup wall, extending distally from the support body and having a preferably substantially cylindrical inner surface which extends from said outer boundary of said distally facing surface; and a superficially facing, generally semispherical, smooth external surface, preferably and optimally of a low friction coefficient, encapsulating the support body and cup wall; and 2) an interchangable and modular stem, preferably of metal or metal alloy, having a distally directed spike, and a superior stem cap which is insertable into the bore of the head; optionally with 3) a head-receiving articular cup having an inner articular surface and a mountable back surface, the articular surface of which, when the head-receiving cup is suitably mounted in suitable receiving stock, mates in articulating contact with said smooth external surface of said head when said head and stem are suitably mounted in suitable receiving stock. The head and stem modularity allows for noticeably increased versatility and efficiency in surgical procedures, and the ceramic material is beneficially adapted for employment in the fabrication of femoral resurfacing implants for conservative arthroplasty.
대표청구항
▼
[ I claim:] [1.] A modular, bone-preserving, conservative resurfacing arthroplasty ball and socket joint implant, comprising the following components:a ceramic and monolithic cupped ball head, said head having a generally semispherical, smooth external bearing surface and an inner support body with
[ I claim:] [1.] A modular, bone-preserving, conservative resurfacing arthroplasty ball and socket joint implant, comprising the following components:a ceramic and monolithic cupped ball head, said head having a generally semispherical, smooth external bearing surface and an inner support body with an inferior, deep, distally facing surface having an outer boundary thereto, said support body having a distally opening stem receiving bore centrally located therein; a part of said bearing surface and an inner surface defining a cup wall, extending distally from said support body from said outer boundary of said distally facing surface; anda stem, which is an elongated member having a distally directed spike, and a proximal stem cap, which is insertable into said bore of said head;wherein:said stem cap, is insertably and frictionally attached to said stem bore.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.