Hip joint bone cement interval blister mould

Abstract

The invention relates to the technical field of cement interval forming, and discloses a hip joint bone cement interval blister blister mold which comprises a lower mold body, a cavity is formed in the lower mold body, a sliding opening is formed in the inner wall of the cavity, a radian adjusting mechanism is arranged in the lower mold body, and the radian adjusting mechanism comprises a cavity formed in the lower mold body. The cavity is communicated with the sliding opening, a motor is fixed in the cavity, a cylinder is fixed to the driving end of the motor, a telescopic rod is fixed to the end, away from the motor, of the cylinder, a frame is fixed to the driving end of the telescopic rod, and a plurality of connecting rods are fixed to the outer wall of the frame. The circular plate is replaced according to the requirement for the radian of the hip joint, the radian of the formed cement interval is changed, the applicability is higher, meanwhile, after the circular plate is replaced, self-adaptive change of the moving distance of the sealing plate is automatically conducted, the sealing performance between the sliding opening and the circular plate is guaranteed, and the sealing effect is better. Swing of the swing rods accelerates demolding of the cement intervals.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a hip joint bone cement spacer blister mold. Background technique [0002] Infection after artificial hip arthroplasty is a complication of artificial hip arthroplasty, which will cause great mental pain to patients, great financial losses, and great pressure on doctors. At present, the treatment method for infection after artificial hip replacement is as follows: firstly, the original hip prosthesis is taken out for thorough debridement, and granular antibiotic-containing bone cement is used to fill the bone marrow cavity as a temporary hip joint barrier and then sterilized. After the infection is controlled, the filled granular bone cement is removed, and a new artificial hip joint is placed again. [0003] Existing cement spacers are generally formed by moulds. Application No. 202021117338.2 discloses a blister mold for bone cement spacers of the hip joint, which incl...

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Problems solved by technology

[0003] Existing cement spacers are generally formed by moulds. Application No. 202021117338.2 discloses a blister mold for bone cement spacers of the hip joint, which includes a blister body and a metal handle. The taper is consistent with the conventional hip femoral prosthesis, with a taper of 12 / 14; the neck thickness and neck-shaft angle of the metal handle are consistent with the conventional hip femoral prosthesis; Arc-shaped, tapering, flatter and thinner than conventional hip femoral prosthesis body; blister body includes hip femoral bone cement spacer blister model that matches the shape of conventional hip femoral prosthesis cavity; the hip joint femoral bone cement spacer and the femoral metal handle generated by the first blister model cavity are placed in it to form a hip joint bone cement spacer; but there are the following problems: the molded cement spacer cannot conform to the radian of the patient's hip joint The situation is fine-tuned, and the applicability is poor

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