Collum femoris controllable-pressurizing minimally-invasive locking steel plate

Abstract

The invention discloses a collum femoris controllable-pressurizing minimally-invasive locking steel plate. The collum femoris controllable-pressurizing minimally-invasive locking steel plate comprisesa steel plate body. Two fixed bases are fixedly installed on one side of the steel plate body, sliding grooves are formed in the sides, away from the steel plate body, of the two fixed bases, bearingplates are slidingly installed in the sliding grooves, fixing steel nails are fixedly installed on the sides, close to openings of the sliding grooves, of the bearing plates, the ends, away from thebearing plates, of the fixing steel nails stretch to the outer sides of the fixed bases, grooves with openings formed in one sides are formed in the inner walls of the bottoms of the sliding grooves,sliding blocks are fixedly installed at the bottoms of the bearing plates, the sliding blocks are slidingly connected with the side walls of the grooves, and pulling ropes are fixedly installed on thesides, away from the steel plate body, of the sliding blocks. The fracture end can be pressurized, the pressurizing distance of the fracture end can be set to be maximal in advance according to the condition of the fracture end, therefore, the length of the collum femoris is guaranteed, function influences caused by limb abbreviation are avoided, and the locking steel plate is simple in structureand convenient to use.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a femoral neck controllable compression minimally invasive locking plate. Background technique [0002] Early sliding goose-head nail fixation of femoral neck fractures has large trauma and bone destruction. Although the fracture end is pressurized, the pressurized distance cannot be controlled, and excessive pressurization may cause excessive shortening of the femoral neck. It is no longer used. The currently used proximal femur minimally invasive locking plate has the advantages of less trauma, less bone destruction, and good angular stability. After the bone resorption of the postoperative fracture end, the fracture gap increases and causes nonunion. After searching, the patent document of application announcement number CN106388923A discloses a controllable sliding compression locking plate of the femoral neck, including: the shape of the mounting surface is similar t...

AI Technical Summary

Problems solved by technology

[0002] Early sliding goose-head nail fixation of femoral neck fractures has large trauma and bone destruction. Although the fracture end is pressurized, the pressurized distance cannot be controlled, and excessive pressurization may cause excessive shortening of the femoral neck. It is no longer used. The currently used proximal femur minimally invasive locking plate has the advantages of less trauma, less bone destruction, and good angular stability. After the bone resorption of the postoperative fracture end, the fracture gap increases and causes nonunion. After searching, the patent document of application announcement number CN106388923A discloses a controllable sliding compression locking plate of the femoral neck, including: the shape of the mounting surface is similar to that of the femur. The fixed steel plate matches the anatomical structure of the end; the fixed steel plate is provided with a femoral shaft fixation hole, a plurality of threaded locking holes and a plurality of sleeves, and a set screw is installed in the described femoral shaft fixation hole. The cylinder corresponds to a plurality of said threaded locking holes one by one, and each said sleeve is matched with the corresponding said threaded locking hole and is coaxial with the said threaded locking hole, and each said sleeve is equipped with a slidable The screw and the limiting body used to limit the excessive retraction of the slidable screw, there is a sliding space between the limiting body and the corresponding slidable screw, and the size of the sliding space can be controlled by adjusting the length of the limiting body. In the early stage of femoral neck fracture healing, continuous, sliding compression can be provided on the fracture end, and excessive sliding of the screw in the sleeve can be avoided, thereby minimizing femoral neck shortening while ensuring femoral neck fracture healing, but this locking The steel plate is not convenient for dynamic compression of the fracture end, and it is easy to increase the fracture gap and cause nonunion after the bone resorption of the fracture end after surgery. Therefore, we propose a controllable compression minimally invasive locking plate for the femoral neck to solve the above problems. question

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