9 results about "Right lesser trochanter" patented technology

This invention relates to the field of medical care technology and discloses a shape memory alloy (NiTi) hip replacement proximal femoral anti-fracture device. It includes a fitting body, with a first clamping arm fixedly disposed at the mid-front end of the fitting body. A fourth connecting mechanism and a sixth connecting mechanism are fixedly disposed at the front end of the fitting body, symmetrically arranged on the upper and lower sides of the first clamping arm. This invention is simple to operate, provides firm fixation, and is practical and reliable. NiTi shape memory alloy possesses shape memory effect, superelasticity, and good biocompatibility. Using NiTi shape memory alloy as the raw material to prepare the encircling device, it is in a flat, extended state at low temperatures and recovers its designed curved shape after heating, firmly and effectively encircling the lesser trochanter. It is mainly applied in hip replacement surgery for elderly patients with femoral neck fractures and osteoporosis, effectively preventing proximal femoral splitting during femoral prosthesis wear.

The invention relates to a proximal femur inner side reduction dilator for preventing the wedge effect of intertrochanteric fracture. The proximal femur inner side reduction dilator comprises a central upright post and an ejector rod, a cylindrical insertion rod is formed at the lower part of the central stand column and is used for being inserted and fixed in a reserved fixing hole of an operating bed, and a mounting hole is transversely formed in the upper part of the central stand column in a penetrating manner; the mounting hole extends along the up-down direction of the upper part of the central upright post; a jacking block is mounted in the mounting hole; through friction force between the jacking block and the left side face and the right side face of the mounting hole, the jacking block is statically kept at a preset height position in the mounting hole; a threaded hole is formed in the jacking block in a penetrating manner in the front-back direction; the front end of the ejector rod is rotatably provided with an ejector head assembly, the rear end of the ejector rod is fixedly provided with a wheel-shaped handle, and an external thread is formed in the middle of the ejector rod. The middle of the ejector rod is installed in a threaded hole of the jacking block, and the ejector head assembly extends to the position in front of the jacking block and is used for pressurizing the inner side of the near end of the thigh of a subject to correspond to the thigh lesser trochanter or the inner side cortex projection area.

This invention relates to an aiming frame, an aiming device including the aiming frame, and a lesser trochanter processing apparatus including the aiming device, wherein the aiming frame (1) has a guide hole (12) for aiming at an intramedullary nail (5) of the femur, and the aiming frame (1) also has a guide hole (11) for aiming at the lesser trochanter (6) of the femur. By integrating the aiming guide hole for the lesser trochanter into the aiming frame for intramedullary nailing, this invention enables aiming, positioning, and manipulation of the lesser trochanter. The aiming frame has a simple structure and saves costs, and the aiming hole for the lesser trochanter can be used for repositioning the lesser trochanter and for inserting locking pins to fix the lesser trochanter, thus expanding the application range of the intramedullary nail aiming frame.

The utility model relates to the technical field of medical care, and discloses a memory alloy hip replacement femur near-end explosion-proof device which comprises an attaching body, a first clamping arm is fixedly arranged in the middle of the front end of the attaching body, and a fourth connecting mechanism and a sixth connecting mechanism are fixedly arranged at the front end of the attaching body. The fourth connecting mechanism and the sixth connecting mechanism are symmetrically arranged on the upper side and the lower side of the first clamping arm. The embracing device is easy to operate, firm in fixation, practical and reliable, the NiTi shape memory alloy has the shape memory effect, superelasticity and good biocompatibility, the embracing device is made of the NiTi shape memory alloy, the embracing device is in the stretching state of the same plane at the low temperature and recovers the designed bent state after being heated, the lesser trochanter is embraced firmly and effectively, and the embracing effect is good. The device is mainly applied to hip joint replacement of patients suffering from senile femoral neck fracture and osteoporosis, and can effectively prevent the proximal femur from splitting in the grinding and filing process of the femoral prosthesis.

The application relates to a lower limb length determination method, device and computer equipment based on hip replacement, which comprises the following steps: acquiring a medical image of a hip joint part, determining a position of an anterior superior iliac spine and a position of a lesser trochanter from the medical image; acquiring a center position of an acetabular liner according to a first optical tracker array installed on an acetabular cup assembly device, and acquiring a ball center position of a femoral head prosthesis according to a second optical tracker array installed on a femoral stem prosthesis; obtaining a pelvic side lower limb length according to the position of the anterior superior iliac spine and the center position of the acetabular liner; obtaining a femoral side lower limb length according to the position of the lesser trochanter and the ball center position of the femoral head prosthesis; and obtaining a target lower limb length based on the pelvic side lower limb length and the femoral side lower limb length. The method can avoid the problem of inaccurate lower limb length calculation caused by the disengagement of the prosthesis ball center from the liner center in hip joint surgery, and improves the accuracy of the determined lower limb length.

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 application relates to a hip joint anatomical landmark point recognition method and system, which comprises the following steps: loading three-dimensional mask data containing femur and hip bone segmentation labels, extracting a bone surface point cloud and converting the same to a physical coordinate system; automatically screening a complete data side by comparing the number of bilateral point clouds; based on the complete femur point cloud, sequentially recognizing the femoral head center, lesser trochanter, femoral neck isthmus center and femoral shaft center point through geometric fitting and extreme value search; based on the same side hip bone point cloud, recognizing the acetabular fossa center, ischial tuberosity, pubic symphysis and anterior superior iliac spine point; finally, converting the landmark points to a three-dimensional model standard coordinate system and generating a visual model. The application realizes automatic and high-precision recognition of key anatomical landmark points of the hip joint, does not require manual intervention and a large amount of training data, has strong robustness, can be directly compatible with a three-dimensional surgical planning system, and significantly improves preoperative planning efficiency and accuracy.

To provide a sitting position assist device that allows a person to sit comfortably and provides a sitting position environment that reduces fatigue. [Solution] The seat body 10 includes an ischial tuberosity accommodation portion 11 consisting of a recess or through hole that accommodates the ischial tuberosities, and a support portion arranged around the ischial tuberosity accommodation portion 11, the support portion including a sacrum support portion 25 arranged in the rear center of the ischial tuberosity accommodation portion 11, a pair of left and right buttock support portions 27 arranged on either side of the sacrum support portion 25, a pair of left and right greater trochanter support portions 21 arranged on both sides of the ischial tuberosity accommodation portion 11, and a pair of left and right lesser trochanter support portions 23 arranged in front of the ischial tuberosity accommodation portion 11, and has an inclined surface that rises outward from the ischial tuberosity accommodation portion 11 as a starting point, and the ischial tuberosity accommodation portion 11 is at the lowest position on the seat body 10.

The utility model relates to the field of orthopedic medical instruments, in particular to thighbone lesser trochanter threading fixing forceps which comprise a first forceps handle and a second forceps handle which are detachably connected, a guide groove is formed in the outer side of a clamping portion of the first forceps handle, and a guide hole communicated with the guide groove is formed in a jaw position. A through hole penetrating through the clamping part of the second plier handle is formed in the clamping part of the second plier handle, and a limiting groove is formed in the jaw of the first plier handle. Compared with the prior art, the pair of fixing forceps has the advantages that compared with the prior art, the guide groove and the guide hole are integrated on the first forceps handle, the structure is simpler, the pair of fixing forceps can be directly used without installation, operation is fast, operation time can be shortened, and pain of a patient is relieved; and the jaw is provided with a limiting groove, so that the small rotor can be firmly clamped.