9 results about "Great Trochanter" patented technology

The application provides a construction method of a femoral neck fracture personalized bone grafting guide, and belongs to the technical field of digital medicine, and comprises the following steps: 1, three-dimensional reconstruction; 2, virtual reduction; 3, determining a bone grafting point; 4, determining a bone attachment surface; using the uniform offset tool of 3-matic, the extracted bone attachment surface is uniformly offset by 1-2 mm to the outside (namely, in the direction opposite to the relative bone surface), a fitting part is generated; 5, determining a bone grafting path; 6, generating a Kirschner wire sleeve based on the diameter of the Kirschner wire, and further generating a bone grafting guide. The application realizes effective bone support for the femur by attaching the fitting part to the back of the greater trochanter side of the femur of the patient, and generates a Kirschner wire guide sleeve. By using the bone grafting guide, the Kirschner wire can be accurately guided to the bone defect area, namely the bone grafting target area, in the closed reduction surgery of the femoral neck fracture.

The invention provides a femoral stem prosthesis for fixing a thighbone greater trochanter osteotomy block, and relates to the technical field of femoral stem prostheses, the femoral stem prosthesis comprises a stem body, the stem body, the thighbone and the osteotomy block are positioned through a group of upper fastening steel wires and a plurality of groups of lower fastening steel wires, and the stem body comprises an upper stem part, a lower stem part and a neck part; the vertical outer contour side surface of the upper handle part is a top inclined contact surface, a reserved surface, an inclined expansion surface, a bottom inclined contact surface and a first inner arc-closing surface which are sequentially connected end to end, the top inclined contact surface is connected with the neck part, and the bottom inclined contact surface is connected with the lower handle part; a thickening unit; the thickening unit is used for increasing hip abduction muscle force arms and serves as a screw mounting foundation; and an extension part. The steel wire cerclage provides uniform pressurization and wrapping fixation based on the tension band principle, and the locking screws provide direct rigid anchoring and anti-shearing / anti-twisting force; strong near-end traction force generated by abductor muscle contraction can be effectively resisted, and the risk of near-end displacement of the osteotomy block can be remarkably reduced.

The utility model discloses a tool for measurement in artificial hip joint replacement. The tool comprises an eccentric distance measuring assembly and a height measuring assembly arranged on the eccentric distance measuring assembly. The eccentric distance measuring assembly is in a T shape and comprises a transverse section and a vertical section arranged at one end of the transverse section in the length direction, the transverse section is provided with a first scale groove, and the bottom end of the vertical section is provided with an arc-shaped face tangent to the bottom face of the transverse section and matched with the arc face of the top end of the thighbone greater trochanter. The device can adapt to different conditions of different patients and improve the measurement accuracy during prosthesis mold testing in an operation, meanwhile, due to the determined right-angle relation among the transverse section, the vertical section and the measurement ruler, an operator can be prevented from finding a vertical line in the operation, the height of a rotation center can be directly measured, and the measurement accuracy is improved. The purpose of noninvasive measurement in an operation is achieved through arc-shaped surface positioning.

The invention discloses an opening positioner, and relates to the technical field of medical instruments, the opening positioner comprises an opening positioner body, one end of the opening positioner body is provided with a needle inlet, the outer surface of the opening positioner body is provided with an arc angle, and the outer surface of the opening positioner body is provided with an automatic positioning assembly. According to the opening positioner, when a patient has a femoral intertrochanteric fracture, in order to accurately position the peak of a greater trochanter, a medical worker can firstly move the two sawtooth clamps in the opening positioner body to the top of the trochanter of the patient and start the positive and negative motor to drive the two sawtooth clamps to rotate oppositely; the bone at the vertex position of greater trochanter of a patient is clamped and fixed, the force of the sawtooth clamp for clamping the bone of the patient is detected through the two pressure sensors, automatic fixing of the opening positioner body is achieved, and then the opening position of a guide needle is stable and accurate and is not prone to being interfered by backward movement of greater trochanter.

The invention discloses an anatomical femoral prosthesis system which comprises a greater trochanter bone cortex shell with physiological muscle attachment points and an alloy femoral stem prosthesis, and a greater trochanter attachment part is arranged on the alloy femoral stem prosthesis; during use, the greater trochanter bone cortex shell is fixed on the greater trochanter attachment part; the system comprises a major trochanter bone cortical shell construction process which comprises the following steps: (1) a proximal femur resection unit cuts off a proximal femur part which contains bone tumors and is provided with a major trochanter from a femur; (2) the greater trochanter separation unit cuts and separates the greater trochanter from the cut proximal femur which contains the bone tumor and is provided with the greater trochanter; and the cancellous bone removing unit is used for removing cancellous bone tissues in the greater trochanter and retaining a complete greater trochanter bone cortex shell. According to the system, the greater trochanter bone cortex shell with a whole or partial muscle attachment function can be constructed, and then the greater trochanter attachment part on the alloy femoral stem prosthesis is fixed with the greater trochanter bone cortex shell, so that anatomical reconstruction is realized.

The utility model relates to the technical field of auxiliary device, especially PFNA auxiliary device, it is mainly aimed at the process of reaming, reaming and inserting the main nail from the fracture line or the nearby position of the great trochanter vertex when carrying out PFNA internal fixation often causes the broken end separation, delays the fracture healing even does not heal, influences the patient recovery effect and the life quality, and the existing hook, towel forceps, bone holder or skin extrusion etc. direct or indirect mode maintains the reduction effect is not ideal problem, proposes the following technical scheme: including sleeve, the guide needle is slidably connected in the sleeve, a plurality of groups of through -hole are installed in the sleeve outer circle, a plurality of groups of through -hole are annular array distribution, the through -hole is used for guiding the kirschner wire, the positioning assembly is arranged in one end of the sleeve, the positioning assembly is used for limiting the guide needle, the utility model can effectively fix the broken end, accurately position the guide needle, promotes the fracture healing, improves the operation efficiency and the patient recovery effect and the life quality.

The utility model provides a percutaneous guide plate for early femoral head necrosis scraping bone grafting, and relates to the technical field of medical instruments, the percutaneous guide plate comprises: a panel attached to a hip joint part of a human body; the panel comprises a front edge and a lower edge, the front edge is attached to the anterior superior spine, and the lower edge is attached to the thighbone greater trochanter; the connecting rod is used for guiding the puncturing tool; the guide needle can penetrate through the puncture channel; the two ends of the connecting rod are fixedly connected with the panel and the connecting rod respectively. The percutaneous guide plate for the early femoral head necrosis scraping bone grafting operation is simple in structure, easy to operate and high in stability, the correction function of the percutaneous guide plate can be achieved through sliding of the sliding piece in the sliding groove, lateral loads in the bending process are effectively eliminated, errors caused by lateral force are avoided, and the percutaneous guide plate is suitable for the early femoral head necrosis scraping bone grafting operation. And the accuracy and the reliability of a test result are ensured.

The utility model relates to the technical field of medical instruments, in particular to a bearded needle for fixing greater trochanter of femur, which comprises a bearded needle main body, a pointed cone part is formed at one end of the bearded needle main body, a plurality of cable channel pieces are arranged on the bearded needle main body, and a plurality of cable through holes are formed on the cable channel pieces. By means of the arrangement, when a thighbone greater trochanter fracture is subjected to surgical fixation, an operator inserts the pointed cone part into a thighbone greater trochanter fracture block to be fixed, then the hooked needle body is integrally attached to the outer side of a thighbone greater trochanter and the outer side of a femoral shaft, and finally a cable (preferably a titanium cable) commonly used in the orthopedics department penetrates through the cable via hole in the cable channel piece to be fixed to the thighbone greater trochanter fracture block. The fixing device for the femoral lesser trochanter and the femoral shaft respectively bypasses the femoral lesser trochanter and the femoral shaft to bind fracture blocks, so that the femoral lesser trochanter fracture blocks and the femoral shaft are fixed, the fixing device is simple in structure and convenient to use and operate, and the internal fixation stability of the lesser trochanter fracture can be ensured.

The utility model belongs to the field of medical instruments, and discloses a thighbone greater trochanter vertex positioning guider which comprises a positioning body of an arc-shaped structure, one end of the positioning body is a first positioning end, and the other end of the positioning body is a second positioning end. The horizontal distance between the first positioning end and the second positioning end is larger than or equal to the horizontal distance between the peak of the large tuberosity and the highest point of the outer side of the large tuberosity, and the vertical distance between the first positioning end and the second positioning end is larger than or equal to the vertical distance between the peak of the large tuberosity and the highest point of the outer side of the large tuberosity. The first positioning end is provided with a plurality of first needle passing holes, and the second positioning end is provided with a plurality of second needle passing holes. According to the utility model, the vertex of greater trochanter can be accurately positioned, so that the accurate kirschner wire punching position is ensured, the body surface cannot be damaged, the operation time can be shortened, and the radiation and bleeding amount can be reduced; the femoral greater trochanter vertex positioning device is suitable for clinical medicine and is used for positioning femoral greater trochanter vertexes.