Minimally invasive irreducible syn-intertrochanteric fracture reduction forceps

Abstract

The invention discloses minimally invasive irreducible syn-intertrochanteric fracture reduction forceps. The minimally invasive irreducible syn-intertrochanteric fracture reduction forceps comprise two reduction arms, wherein the two reduction arms are hinged together in a detachable manner through a hinging assembly, each reduction arm comprises a forceps body and a pressurizing arm arranged at two sides of the hinging assembly, and a clamping groove is arranged at one side, facing the forceps body of the other reduction arm, of each reduction arm. The minimally invasive irreducible syn-intertrochanteric fracture reduction forceps are simple in structure, easy to manufacture, convenient and rapid to use, and high in efficiency, when the minimally invasive irreducible syn-intertrochanteric fracture reduction forceps are used, the length of a surgical incision does not need to be increased, and the injuries to the deep soft tissue can not be increased.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a minimally invasive and irreducible intertrochanteric fracture reduction forceps. Background technique [0002] Intertrochanteric fracture is a common clinical fracture. With the development of society and economy and the aging of population, the incidence of intertrochanteric fracture and the complexity of fracture types are gradually increasing. It is necessary for patients to get out of bed early to avoid malunion and complications of long-term bed rest in the elderly. Internal fixation surgery has become the first choice for the treatment of this type of fracture. The key point of internal fixation surgery is the reduction quality of the fracture. The space can be well supported, thereby reducing the compressive stress and shearing force of the internal fixation material, improving the success rate of the operation, and avoiding complications such as redisplacement o...

AI Technical Summary

Problems solved by technology

[0004] 1. It is difficult to achieve a good reduction in complex fracture surgery: the current clinical mainstream is closed reduction and intramedullary nail fixation on the traction bed. The principle of traction reduction is to rely on the tension of soft tissue to assist fracture reduction. Due to the relatively special anatomical characteristics of the intertrochanteric femur, in In the process of fracture closed traction reduction, it often happens that the fracture end cannot be well and accurately reduced, especially in complex intertrochanteric fractures. It is often necessary to repeatedly adjust and perform X-ray fluoroscopy during the operation, which will increase the operation time, and Excessive X-ray fluoroscopy can also cause harm to medical staff and patients

For some difficult-to-reduce fractures, open reduction is required, which will increase trauma and bleeding, resulting in a higher chance of fracture nonunion after surgery

[0005] 2. For patients with severe fractures, the soft tissue sleeve around the fracture is severely damaged, and the fracture fragments that have been reduced are prone to loss of reduction during operation: in complex intertrochanteric fractures, due to the serious fracture, the intertrochanteric fragmentation There are multiple fracture fragments, and there is a lack of good soft group connection among the fracture fragments. At the same time, the fracture often accumulates nail entry points. During the process of opening and reaming the main nail, due to the large diameter of the opener or drill bit, the opener or drill bit along the guide wire In the process of advancing into the medullary cavity, the surrounding bone blocks are squeezed to the surrounding, especially when the fracture line accumulates into the nail point, the drill bit enters the medullary cavity from the fracture line, and due to the compression of the drill bit on the surrounding bone blocks, a fracture occurs Loss of repositioning and obvious redisplacement of the mass, especially the loss of repositioning of the femoral calcar. The femoral calcar is the bearing area of ​​compressive stress in the intertrochanteric area. Poor reduction in this area can easily lead to coxa varus and early weight bearing. The patient's internal fixation is cut out and enters the joint cavity, which increases the failure rate of the operation and increases the amount of postoperative bleeding in the medullary cavity

[0006] 3. In simple fractures, due to operational deviations, loss of reduction often occurs during surgery: since the guide pin is inserted manually by the surgeon, it is difficult to ensure the axis of the guide pin and the intramedullary nail after each surgery. The axis of the intramedullary nail completely overlaps, so there may be a certain deviation between the cavity formed along the guide wire after reaming and the normal position after the intramedullary nail enters. After the main nail is inserted, the main nail is close to The fracture fragment will be squeezed at the end, and then the fracture fragment will be separated and displaced again after the fracture fragment is reset. Clinically, the proximal fracture fragment often shifts to the inside, and the femoral calcar is lost.

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