36 results about "Femoral Shaft Fracture" patented technology

The steel wire guiding device for femoral shaft fracture bone fragment fixation involves minimally invasive internal fixation of femoral comminuted fracture, without cutting the broken end, and using steel wire or suture to bind and fix the femur and free bone fragments. It includes the front knuckle and the knuckle chain. The knuckle chain includes the hinged rear knuckle. There is a torsion spring between the rear knuckle and the front knuckle. The function of the torsion spring is to make the front knuckle move toward the axis of the femur. sideways. After closed intramedullary nailing for comminuted femur fractures, when the handle is pushed forward under fluoroscopy, the posterior phalanx moves joint by joint to form a surround on the femur and free bone fragments. Use the nucleus pulposus forceps to pinch the front end of the steel wire, and then pull it to the inside of the guiding device to pull the steel wire out of the guiding device; the steel wire can also be used to lead out the sutures. Knot the steel wire or suture to achieve closed reduction, binding and fixation of free bone fragments and femur. The device is easy to operate, and compared with open reduction and fixation, it can avoid destroying the blood supply of free bone fragments, significantly reduce the incision, and reduce operation and postoperative healing time.

The invention belongs to the field of medical instruments, and relates to a femoral shaft fracture internal fixing instrument, which comprises a locking steel plate and a collimation assembly component of the locking steel plate. The locking steel plate comprises a steel plate, a single lock, a combination lock and lock pins, and the collimation assembly component comprises a single lock collimation fixing apparatus, a combination lock collimation fixing apparatus and auxiliary components including bone nails, a bone nail positioning drawing hook, a combined screwdriver and the like. An arc which corresponds to a forward physiological curve of the femur of a patient is longitudinally designed on the steel plate, an arc which corresponds to the transverse diameter of the femur is transversely designed at a position, which is close to a femur surface, of the steel plate, arc-shaped curved surfaces are symmetrically and uniformly distributed on side surfaces of the steel plate, and the steel plate conforms to an arc line of the femur, is placed in the middle of a fracture portion, and contacts with the femur in a limited manner. The combination lock is designed on the inner side of the femur and across a fracture line, the single lock is designed far away from the fracture line, collimation, fixation, drilling and assembling are carried out by the collimation assembly component, and operation is simple and fast. The femoral shaft fracture internal fixing instrument has the advantages that fixation is stable, additional fixation is not required after surgery, and the femoral shaft fracture internal fixing instrument can be used for early-stage functional exercises and is favorable for fracture healing. After fracture healing, a fixing object in the femur can be detached conveniently.

A steel wire guide for femoral shaft fracture bone fragment fixation relates to the fixation of femoral shaft fracture free bone fragments and solves the problem of closed reduction, binding and fixing of femur and free bone fragments with steel wires or sutures. After closed reduction and interlocking intramedullary nailing for comminuted fractures of the femoral shaft, under C-arm fluoroscopy, the outer tube is passed through the muscle, and the free bone fragments are hooked to make it close to the femoral shaft. The inner tube rotates around its own center of circle. After the inner tube protrudes from the outer tube, it cooperates with the outer tube to enclose the free bone fragment and the femoral shaft. At this time, the steel wire can be pulled out from the inner tube and the outer tube with nucleus pulposus forceps; Fixed with suture, the suture can be fixed at the end of the steel wire and pulled out with the steel wire. Knot the steel wire or suture to achieve closed reduction, binding and fixation of free bone fragments and femur. The guide is easy to operate, and compared with open reduction and fixation, it can avoid destroying the blood supply of free bone fragments, significantly reduce the incision, reduce operation time, and relieve patients' pain.

The present invention provides an intramedullary nail. The intramedullary nail is made of a nickel-titanium alloy material with memory function and superelasticity, and the intramedullary nail is made into the current corresponding shape of the intramedullary nail according to the site of use. Intramedullary nails, including intramedullary nails for femoral shaft fractures, the intramedullary nails include a nail rod fixing part and a nail rod expandable part, the nail rod expandable part is connected to one end of the nail rod fixing part, so Both the expandable part of the nail shaft and the fixed part of the nail shaft are provided with strip-shaped cavities, and are connected between the strip-shaped cavities inside the fixed part of the nail shaft and the expandable part of the nail shaft. The intramedullary nail provided by the present invention, by using the intramedullary nail made of nickel-titanium alloy, has memory function, super elasticity and strong adaptability, and can be correspondingly set as the intramedullary nail used in the corresponding body part, and its elasticity can be used. Do fixation, and because of the superelasticity of the compression, the two fractures are aligned together, the gap can be eliminated, and the fracture is easier to heal.