Femoral intertrochanteric fracture double-sleeve type osteosynthesis device

Abstract

The invention discloses a femoral intertrochanteric fracture double-sleeve type osteosynthesis device. The femoral intertrochanteric fracture double-sleeve type osteosynthesis device comprises an osteosynthesis plate, double-sleeve nails and a plurality of locking screws. The osteosynthesis plate is matched with the outer side of the femoral neck end in shape and the width and the thickness of the osteosynthesis plate decrease from top to bottom. The upper portion and the lower portion of the osteosynthesis plate are provided with a plurality of threaded locking holes and the middle portion of the osteosynthesis plate is fixedly connected to two sleeves. The double-sleeve nails comprise two half-threaded empty nails and the tail ends of the two half-threaded empty nails are sleeved in the two sleeves of the osteosynthesis plate. The locking screws are used for fixing the osteosynthesis to a femur through the locking holes. When the femoral intertrochanteric fracture double-sleeve type osteosynthesis device is used clinically, the two half-threaded empty nails are screwed along a guide needle, the sleeves sleeve the tail ends of the half-threaded empty nails, the upper portion of the osteosynthesis plate is fixed to a femoral greater trochanter with 3 or 4 locking screws, and the lower portion of the osteosynthesis plate is fixed to a femoral shaft. The femoral intertrochanteric fracture double-sleeve type osteosynthesis device can reduce the fracture line, improves stability and is quick in healing and suitable for diversity femoral neck fracture repair.

Description

technical field [0001] The invention relates to a bone setting device in the orthopedics department of a hospital, in particular to a double-sleeve type bone setting device for intertrochanteric fractures of the femur. Background technique [0002] Among the cases involving femoral fractures in the existing clinical operations, fractures near the femoral neck are more common, and there are many types of fractures at this site. The more common treatment methods include closed reduction and sliding hip screw internal fixation (DHS) , Locking nail-plate system internal fixation, proximal femoral nail (PFNA) method, percutaneous compression plate method (PCCP) and cannulated screw method. [0003] Sliding hip screw fixation (DHS) consists of a bone plate with a sliding sleeve, a hollow lag screw and several ordinary screws. Drill the guide wire into the neck. After confirming that the position of the guide wire is good, use a hollow drill to drill a hole along the guide wire, i...

AI Technical Summary

Problems solved by technology

[0008] The disadvantages are: each treatment method is not universal, and each has its own shortcomings. The sliding hip screw internal fixation method (DHS) is not effective for comminuted fractures, lesser trochanteric fractures, medial femoral wall or femoral calcar integrity. It is not applicable to cases of destruction and fractures of the lateral wall of the femur; for patients with osteoporosis or comminuted fractures, the internal fixation method of the locking nail-plate system cannot be pressurized during the healing process of the femoral neck, and it is prone to poor bone union and prone to fracture. Bone plate screw breakage occurs; the proximal femoral nail method (PFNA) is too thick at the proximal end of the intramedullary nail, which is very destructive to the femoral trochanter. position, resulting in increased postoperative internal bleeding; percutaneous compression plate (PCCP) for lateral femoral wall fractures or femoral greater trochanter fractures cannot be well fixed; three half-thread cannulated screws for lateral femoral wall fractures , greater trochanter fracture, osteoporosis, or postoperative patients with weight-bearing walking, the tails of the three hollow nails will become loose, which will affect fracture healing and lead to internal fixation failure

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