Precise supporting and repositioning device for tibial plateau fracture

Abstract

The invention relates to a precise supporting and repositioning device for a tibial plateau fracture. The precise supporting and repositioning device for the tibial plateau fracture is characterized in that an outer cannula is located above a lower outer cannula, a square groove and a circular groove are formed in the side wall of the outer cannula, the circular groove is connected with a swing-controlling knob, the square groove is located in the swinging direction of a supporting rod, a circular groove formed in the side wall of the lower outer cannula is connected with a rotation-controlling knob, and a square groove is connected with a vertical expander. A hollow groove is formed in the umbrella-shaped top end of a supporting umbrella, the supporting umbrella is connected with the supporting rod, and the lower end of the supporting rod is arranged in the outer cannula, a vertical clamping device is arranged below the supporting rod, located in the outer cannula and in the shape of a circular open ring. The top end of the swing-controlling knob is in contact with the vertical clamping device, the waist portion of a rotary clamping device is a groove, the upper end of the rotary clamping device is connected with the inner side wall of the outer cannula in a cast fabricated mode, and the top end of the rotary-controlling knob is in contact and connected with the groove of the waist portion of the rotary clamping device. The precise supporting and repositioning device for the tibial plateau fracture overcomes the defect of inaccurate repositioning, and is easy and convenient to operate, capable of conducting precise and quantitative repositioning on a collapsed articular surface, small in size, low in cost and convenient to maintain and replace.

Description

technical field [0001] The invention relates to a precise support and reduction device for assisting the tibial plateau fracture reduction in surgery, in particular to a precise support and reduction device for tibial plateau fractures. Background technique [0002] Tibial plateau fractures are fractures involving the proximal articular surface of the tibia, which are often caused by vertical and varus and valgus violence. Fracture displacement is often manifested as articular surface collapse and / or articular surface splitting. The reduction of the collapse is particularly difficult, which is also one of the most important factors affecting the prognosis of patients. [0003] Before the present invention, the reduction of the collapsed articular surface during the operation was mostly completed with a simple ejector rod or a bone knife. The defects include: (1) The operation depends on the personal experience of the surgeon, and the collapsed position of the articular surfa...

AI Technical Summary

Problems solved by technology

[0003] Before the present invention, the reduction of the collapsed articular surface in the operation was mostly done with a simple mandrel or bone knife, and its defects included: ① relying on the personal experience of the surgeon during operation, the position and direction of the collapsed articular surface and the degree of subsidence can only be roughly judged, and often cannot be accurately reset; ②tools such as mandrels or bone knives lack suitable contact surfaces, and cannot provide good mechanical support when resetting the articular surface; ③lack of quantitative means when resetting , the precise reduction of the collapsed articular surface cannot be achieved, and repeated X-ray fluoroscopy is required during the operation to determine the satisfaction of the articular surface reduction

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