Reset fixing frame for orthopedics

Abstract

The invention relates to a reset fixing frame for orthopedics, belonging to the technical field of medical apparatus and instruments for clinical bone-knitting. The reset fixing frame for orthopedics is provided with two fixed base plates and six support rods with adjustable effective lengths, wherein both ends of the support rod are respectively articulated on the two fixed base plates; each support rod is composed of a sleeve and a sliding rod inserted in the sleeve; and the sleeve and the sliding rod are respectively arranged on the fixed base plates through spherical hinges. The support rods are extended and adjusted by utilizing the sliding rods, active movement of the support rods is changed into passive movement driven by the base plates, and six actions such as compression prolongation, left-right angulation, fore-and-aft angulation, left-right translation, for-and-aft translation and rotation can be carried out according to the alignment requirement at bone stump, so that the reset fixing frame for orthopedics is accurate for positioning, simple and convenient to operate and wide in range of application.

Description

technical field [0001] The invention relates to the technical field of medical instruments for clinical osteosynthesis, in particular to an external fixator for fracture correction and reduction. Background technique [0002] In recent years, orthopedic fixation devices have developed rapidly, and various fracture orthopedic reduction devices have appeared clinically. For example, the universally adjustable fracture external fixer designed by the inventor can adjust the position and direction of the fixing nail hole arbitrarily, so that the distance and direction of the drilled hole in the operation are no longer strictly limited by the fixer, thereby reducing the difficulty of operation , but the translation and rotation of the device must be operated separately, and the accuracy is low. Other three-dimensional external fixators, such as the Irizanov frame and the Basini frame, etc., also cannot simultaneously satisfy all movements such as translation and rotation required...

AI Technical Summary

Problems solved by technology

For example, the universally adjustable fracture external fixer designed by the inventor can adjust the position and direction of the fixing nail hole arbitrarily, so that the distance and direction of the drilled hole in the operation are no longer strictly limited by the fixer, thereby reducing the difficulty of operation , but the translation and rotation of the device must be operated separately, and the accuracy is low

Other three-dimensional external fixators, such as the Irizanov frame and the Basini frame, etc., also cannot simultaneously satisfy all movements such as translation and rotation required for fracture reduction.

Patent No. ZL96193657.6 is a three-dimensional fixation frame that is clinically used Taylor's frame to solve the above problems. It can perform translation and angle adjustment at the same time only by changing the effective lengths of six struts, but its struts are all The threaded connection structure, that is, the effective length is adjusted by the relative rotation of the screw nut. During the operation, X-ray measurement of the deformed limb is required first, and the adjustment position of each rod is calculated by computer according to the movement value of the broken bone end. Although the accuracy is high, the operation is cumbersome. , the high cost of use limits its popularization and application

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