Knee surgery adjustment fixation spreader

Abstract

The invention discloses a knee-joint operation adjusting and fixing distraction device which comprises a foot posture adjusting fixing apparatus capable of performing stepless continuous position adjustment and fixing in the front-back direction of a guide rail and rotating at 3360 degrees, a foot-thigh separation distance quick and fine adjusting device capable of achieving quick adjustment and fine adjustment of a separation distance between the foot and the thigh in the vertical direction of the shank, and a thigh posture fixing apparatus capable of adjusting rotation of the fixing apparatus according to a foot posture, wherein the lower end of the foot-thigh separation distance quick and fine adjusting device is connected with the foot posture adjusting fixing apparatus, and the upper end of the foot-thigh separation distance quick and fine adjusting device is connected with the thigh posture fixing apparatus. The foot-thigh separation distance quick and fine adjusting device comprises a quick adjusting rod mechanism with the lower end fixed on a foot fixing boot, wherein the upper portion of the quick adjusting rod mechanism is connected with a fine adjusting mechanism, and the upper end of the fine adjusting mechanism is connected with the thigh posture fixing apparatus. The knee-joint operation adjusting and fixing distraction device can meet continuous or temporary fixing and position adjustment under the condition that the knee joint of a patient is at different bending and stretching angles and inward and outward turning angles and any-time quick, fine and accurate adjustment of the foot, shank, knee joint and thigh positions of the patient and angle postures.

Description

technical field [0001] The invention relates to a surgical operation auxiliary instrument, in particular to a knee joint surgical adjustment and fixation spreader. Background technique [0002] The knee joint is one of the most vulnerable joints in the human body. When the knee joint moves, there is contact and extrusion between the femur, tibia and patella. Trauma infection, strain, deformity or degenerative changes can easily cause knee joint lesions, such as anterior cruciate ligament injury, posterior cruciate ligament injury, intra-articular Fracture, meniscus injury and suppurative knee arthritis, rheumatoid arthritis, lateral subluxation of patella, loose body of knee joint, etc. When conservative treatment fails, surgery becomes an important way to solve knee joint pain and dysfunction. [0003] Since the 1970s, the development of artificial joints in basic research, design, production and clinical application has been very rapid, and knee joint surgery has been wi...

AI Technical Summary

Problems solved by technology

[0011] 1) It is impossible to fix any position in the stroke by adjusting the partial gear position, and the surgical adaptability is poor;

[0012] 2) When changing the position of the foot, it is necessary to lift the patient's foot, which makes the operation complicated and inconvenient, increases the risk of secondary injury during the operation, and has low safety;

[0013] 3) Arbitrary change and fixation of the foot posture cannot be realized, such as the left and right swing of the patient's calf in the width direction of the operating table

[0017] 1) Adjustment of partial gear positions cannot achieve fixation at any position within a certain range, and the surgical adaptability is poor;

[0018] 2) During the adjustment operation, medical staff need to lift the patient's calf, which is tedious and laborious, increases the risk of secondary injury during the operation, and has low safety;

[0019] 3) Since the positions of the patient's buttocks, feet and the adjustment mechanism are determined during the operation, the adjustment range of the lower leg is limited, and this type of design scheme cannot meet the needs of patients with different leg lengths

[0032] 2) The support adjustment part of this design is mainly composed of a manual adjustment lever and a pressure relief fine-tuning lever, which can only achieve first-level adjustment, and cannot realize small-scale adjustment at any time during the operation

This design may cause the patient's ligaments to be strained during the tightening process. At the same time, the controllability of the adjustment range is poor, and the small range adjustment of the pressure relief fine-tuning lever cannot meet the needs of patients due to operations such as cutting collateral ligaments during the operation. distance adjustment needs

[0034] 4) When the position of the patient's thigh needs to be changed, the position of the contact part of the entire device with the thigh cannot be changed accordingly, which will lead to unstable fixation due to too small contact area or too high pressure when facing patients with different leg lengths. Large, unable to maintain the smooth flow of blood in the patient's lower extremities

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