Novel hip joint metal mortar cup
阅读说明：本技术 一种新型髋关节金属臼杯 (Novel hip joint metal mortar cup ) 是由 姜任东 东辉 于 2020-08-02 设计创作，主要内容包括：本发明一种新型髋关节金属臼杯,主要包括髋臼杯体和锁定髋臼螺钉,所述锁定髋臼螺钉前端设有自攻螺纹,后端钉头设有锥形外螺纹,所述髋臼杯体设为中空的半球形,髋臼杯体顶部最高点处形成安装孔,髋臼杯体侧壁设置若干个万向锁定髋臼螺钉孔和若干个普通髋臼螺钉孔,万向锁定髋臼螺钉孔与锁定髋臼螺钉配合,可实现多角度多方向穿钉并锁紧。(The invention relates to a novel hip joint metal acetabular cup, which mainly comprises an acetabular cup body and locking acetabular screws, wherein self-tapping threads are arranged at the front ends of the locking acetabular screws, conical external threads are arranged on nail heads at the rear ends of the locking acetabular screws, the acetabular cup body is designed to be a hollow hemisphere, mounting holes are formed at the highest point of the top of the acetabular cup body, a plurality of universal locking acetabular screw holes and a plurality of common acetabular screw holes are arranged on the side wall of the acetabular cup body, and the universal locking acetabular screw holes are matched with the locking acetabular screws, so that multi-angle multi-direction nailing and.)
1. The utility model provides a novel hip joint metal acetabular cup, mainly includes acetabular cup body (1) and locking acetabular screw (2), locking acetabular screw (2) front end is equipped with self tapping screw, and the rear end pin fin is equipped with the toper external screw thread, acetabular cup body (1) is established to hollow hemisphere, and acetabular cup body (1) top highest point department forms the mounting hole, its characterized in that acetabular cup body (1) lateral wall sets up universal locking acetabular screw hole of a plurality of (3) and the ordinary acetabular screw hole of a plurality of (4).
2. A novel hip joint metal mortar cup according to claim 1, characterized in that universal locking acetabular bone screw hole (3) acetabular cup (1) side wall sets up hollow hole (31), set up universal locking ring (32) in hollow hole (31), universal locking ring (32) surface establish to the cydariform with hollow hole (31) cooperation is rotated, universal locking ring (32) set up taper hole (321) along the cylindrical axis with the pin fin toper external screw thread cooperation of locking acetabular screw (2) sets up, taper hole (321) are equipped with open slot (322), the hole wall in convex hole (31) inwards goes out a cylindric lock (33), cylindric lock (33) are arranged in open slot (322).
Technical Field
The invention relates to the field of medical instruments, in particular to a novel hip joint metal mortar cup.
Background
The artificial hip joint replacement is suitable for congenital hip joint dysplasia, aseptic necrosis of femoral head, rheumatoid arthritis, traumatic arthritis, benign and malignant bone tumor and other diseases. Artificial hip replacement is required when articular surfaces are worn and articular surface cartilage degeneration is accompanied by moderate to severe persistent joint pain and dysfunction, and the disease cannot be alleviated by other various non-surgical treatments.
At present, in a complex artificial hip joint replacement operation with bone defects around the acetabulum at home and abroad, an acetabulum cup fixing method is usually only to adopt 2-3 acetabulum screws with fixed directions to be driven into screw holes of the acetabulum cup, and the acetabulum screws and the acetabulum cup are designed in a non-locking way, so that the defects of insufficient bone mass at the positions where the screws are arranged and easy loosening of the acetabulum cup exist. Utility model patent CN201020253864 discloses a locking formula acetabular bone screw acetabular bone prosthesis combination changes the screw hole of acetabular bone cup and acetabular bone screw into screw-thread fit locking mode, has overcome above-mentioned defect, but has retrained the direction of drift bolt, brings new defect.
Disclosure of Invention
The invention discloses a novel hip joint metal mortar cup, which overcomes the defects.
The novel metal acetabular cup for the hip joint mainly comprises an acetabular cup body and locking acetabular screws, wherein self-tapping threads are arranged at the front ends of the locking acetabular screws, conical external threads are arranged on nail heads at the rear ends of the locking acetabular screws, the acetabular cup body is of a hollow hemispherical shape, a mounting hole is formed at the highest point of the top of the acetabular cup body, a plurality of universal locking acetabular screw holes and a plurality of common acetabular screw holes are arranged on the side wall of the acetabular cup body,
universal locking acetabular bone screw hole is in the acetabular cup sets up the hole, set up universal locking ring in the hole, universal locking ring surface establish to the cydariform with the cooperation of formation of the chinese hole is rotated, universal locking ring set up taper screw hole along the formation axis with locking acetabular bone screw's pin fin toper external screw thread cooperation sets up, taper screw hole is equipped with the open slot, the inside protruding cylindric lock of formation of the chinese hole wall, the cylindric lock is arranged in the open slot, only restrict universal locking encircles self axis and rotates, screws up during locking acetabular bone screw universal locking ring is strutted with formation of the chinese hole locking.
Has the advantages that: according to the novel hip joint metal acetabular cup, the acetabulum screw is matched with the universal locking ring and the hollow hole, so that multi-angle and multi-direction nailing and locking can be realized, and the defects are overcome.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a novel hip joint metal cup;
FIG. 2 is a schematic view of the acetabular cup;
FIG. 3 is a schematic view of a gimbal locking ring structure
Detailed Description
FIGS. 1-3 show a novel metal acetabular cup for hip joint, which mainly comprises an acetabular cup body 1 and locking acetabular screws 2, wherein the front ends of the locking acetabular screws 2 are provided with self-tapping threads, the rear end nail heads are provided with conical external threads, the acetabular cup body 1 is in a hollow hemispherical shape, the highest point of the top of the acetabular cup body 1 is provided with a mounting hole, the side wall of the acetabular cup body 1 is provided with a plurality of universal locking acetabular screw holes 3 and a plurality of common acetabular screw holes 4,
universal locking acetabular bone screw hole 3 acetabular cup side wall sets up a hollow hole 31, set up