Automatic traction and rotating reset device for leg fracture

Abstract

The invention discloses an automatic traction and rotating reset device for a leg fracture. The automatic traction and rotating reset device comprises suckers, a base, a telescopic sleeve, a traction mechanism, a rotating reset mechanism, a tension sensor and a fixing foot plate. The suckers are fixed to the bottom of the base. The body reset mechanism is connected with the base through the square telescopic sleeve. The traction mechanism is a lead screw sliding table used reversely, and a motor is arranged at the tail end of the traction mechanism. The rotating reset mechanism is connected with a motor speed reducer. The output end of the rotating reset mechanism is provided with a connector universal for a traction table. The rotating reset mechanism is connected with the tension sensor and the fixing foot plate into a string through the connector universal for the traction bed. The rotating reset device can finish traction and rotating reset of the leg fracture and gets ready for other operation in surgery; the magnitude of drag force can be fed back, and excessive drag is avoided; the traction and reset effect can be kept, and repeated operation is avoided; traction and rotation are quantified, and reference is provided by a reset method for fracture traction operation; the device is suitable for a common steel traction table, and equipment transformation is simplified.

Description

technical field [0001] The invention belongs to the field of surgical robots and relates to an automatic traction and rotation reset device for leg fractures. Background technique [0002] With the advent of BO (Biological Osteosynthesis) era, closed reduction and intramedullary nailing has become the gold standard treatment for femoral shaft fractures, the core of which is minimally invasive or non-invasive closed reduction. During the operation, the fracture ends that overlap and shift along the long axis of the femur are fully distracted with the help of a traction table, and then the doctor uses manipulation or instrumentation to obtain a temporary reduction, so that gold fingers or guide wires can be inserted into the marrow after reaming nails, and finally complete the locking of the distal and proximal ends, and the whole operation is completed under the monitoring and guidance of the C-arm machine perspective. The traction bed currently used clinically adopts the ma...

AI Technical Summary

Problems solved by technology

The traction bed currently used clinically adopts the manual adjustment of the traction method through the trapezoidal screw, which requires the assistant to continuously adjust according to the instructions of the surgeon, which is time-consuming and laborious.

Due to the lack of force feedback and the patient is under anesthesia, excessive stretching is easy to occur during the traction process. Patients often feel pain from the calf socket after surgery. Severe overstretching may even cause irreversible damage to the blood vessels and nerves of the patient.

The existing set of traction beds is expensive, and many secondary hospitals and even tertiary hospitals are unconditionally equipped. Even in hospitals equipped with advanced traction beds, the rotation and reset during the operation is still done manually. There is no quantitative standard, and it is difficult to form a standard.

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