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US 2022/0023052 A1Published application
Pad prosthesis and artificial knee prosthesis having same
AssigneesBeijing Naton Medical Technology Holdings Co., Ltd., Tianjin Zhengtian Medical Instrument Co., Ltd.
InventorsDayong SONG, Jian WANG, Senyuan HU, Xiang DONG, Shufu XU
Life of this patent
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Abstract
A pad prosthesis includes a body, a protrusion portion and a snap. The body has a first surface, and the first surface includes a front edge, a curved edge, a rear edge and a straight edge connected sequentially. The protrusion portion is arranged on the first surface of the body. The snap is arranged on the first surface of the body, and the snap extends along a second direction, an angle between the second direction and the first direction is an acute angle. The pad prosthesis according to the present application may be applied in an artificial knee prosthesis.
Claims20
A pad prosthesis, comprising:
- a body having a first surface, the first surface comprising a front edge, a curved edge, a rear edge and a straight edge connected sequentially, the front edge being opposite to the rear edge in a front and rear direction, the curved edge being opposite to the straight edge in a first direction perpendicular to the front and rear direction, a distance between the curved edge and the straight edge in the first direction increasing first and then decreasing along a direction from rear to front;
- a protrusion portion arranged on the first surface of the body;
- and
- a snap arranged on the first surface of the body and extending along a second direction, an angle between the second direction and the first direction being an acute angle, the snap having a first end portion and a second end portion opposite each other in the second direction, the first end portion being close to the straight edge relative to the second end portion in the first direction, the first end portion being close to a most front end of the front edge relative to the second end portion in the front and rear direction, a maximum distance between the second end portion and the front edge in the front and rear direction being a first distance, and a maximum distance between the rear edge and the front edge in the front and rear direction being a second distance, and a ratio of the first distance to the second distance being 1:3 to 1:4.
1 more element
An artificial knee prosthesis comprising:
- a tibial tray plateau comprising a bottom plate and a flange arranged on the bottom plate, an accommodation slot being defined between the bottom plate and the flange, the flange comprising a front enclosure, a curved enclosure, a rear enclosure, and a straight enclosure connected sequentially, a front engaging slot and a first front recessed slot being defined in a rear surface of the front enclosure, and a rear engaging slot being defined in an upper surface of the rear enclosure;
- and
- a pad prosthesis comprising:
- a body having a first surface, the first surface comprising a front edge, a curved edge, a rear edge and a straight edge connected sequentially, the front edge being opposite to the rear edge in a front and rear direction, the curved edge being opposite to the straight edge in a first direction perpendicular to the front and rear direction, a distance between the curved edge and the straight edge in the first direction increasing first and then decreasing along a direction from rear to front;
- a protrusion portion arranged on the first surface of the body;
- and
- a snap arranged on the first surface of the body and extending along a second direction, an angle between the second direction and the first direction being an acute angle, the snap having a first end portion and a second end portion opposite each other in the second direction, the first end portion being close to the straight edge relative to the second end portion in the first direction, the first end portion being close to a most front end of the front edge relative to the second end portion in the front and rear direction, a maximum distance between the second end portion and the front edge in the front and rear direction being a first distance, and a maximum distance between the rear edge and the front edge in the front and rear direction being a second distance, and a ratio of the first distance to the second distance being 1:3 to 1:4,
- wherein the protrusion portion of the pad prosthesis is able to be fitted in the accommodation slot, the snap of the pad prosthesis is able to be engaged in the front engaging slot, the engaging projection portion is able to be engaged in the rear engaging slot, a first front recessed slot is defined in a rear surface of the front enclosure, and the first front protrusion of the pad prosthesis is able to be fitted in the first front recessed slot.
5 more elements
Dependencies are inferred from the claim text.