33 results about "Fracture neck" patented technology

The invention discloses a method for researching the effects of Dickkopf-1 and cell apoptosis in steroid-induced avascular necrosis of femoral head (SANFH). The method comprises the following steps: by taking the femoral head sample of SANFH taken through total hip replacement as an experiment group and taking the sample after the hip replacement for fracture of neck of femur as a contrast group, cutting the femoral head sample, fixing and decalcifying the cut femoral head sample to prepare slices, observing the morphologic change of osteocytes by an electronic microscope, observing the pathological change of the osteocytes by a light microscope, counting the vacant bone lacuna, detecting the expression of Dickkopf-1 by an immunohistochemical staining technique, thus exploring the effects of Dickkopf-1 and cell apoptosis in SANFH. The method can be used for providing assistance for early diagnosis and curing of SANFH and also providing a theoretical basis for clinical prevention and curing of SANFH in future.

The invention discloses a femoral neck fracture angle stable type intramedullary fixing device. The device is structurally characterized in that one end of a sighting device A is connected with a sighting device B through a fixing knob I, and the other end of the sighting device A is connected with a main nail through threads; dovetail grooves are formed in the two side surfaces of the sighting device B, the sighting device B is connected with sighting device accessories through the dovetail grooves, tension lock pins and a far-end lock pin sleeve guide hole are arranged/formed at/in the top surface of the sighting device B, and a sleeve is inserted into the hole so that the tension lock pins and a far-end lock pin can be driven therein; each sighting device accessory consists of two symmetrical pieces, a pull nail sleeve guide hole penetrating up and down is formed in the top surface of each sighting device accessory so that pull nails except the main nail can be driven therein, and the optimal positions of the pull nails except the main nail can be selected through up-down sliding of the dovetail grooves; after femoral neck fracture is reduced and the main nail is inserted, the pull nails except the main nail are firstly driven in for pressurization, then two pull locking nails and a far-end locking nail are driven therein, and the three hollow nails for the femoral neck are dispersedly fixed, so that the anti-rotation capability is improved, and the stability of fracture reduction and healing is enhanced.

The invention provides a method for percutaneous positioning of an internal fixation screw channel of a femoral neck fracture screw, and relates to the field of medical instruments. The method comprises the following steps: during preoperative CT (Computed Tomography), pasting a developing patch on the skin of a patient, performing three-dimensional reconstruction on CT data by using three-dimensional medical image modeling software, and designing a percutaneous guide plate; finding a positioning point of a percutaneous guide plate through scale marks of the developing patch, directly placing a positioning kirschner wire through the positioning channel, positioning the percutaneous guide plate, and then placing the positioning kirschner wire and a bone screw through a guide plate screw placement channel. The operation method is simple, accurate screw placement is achieved, the screw placement space configuration is reasonable, and when radiation is avoided, the kirschner wire and the bone screw are successfully driven and positioned at one time.

The invention discloses a plum blossom guide steel plate for femoral neck fracture. The steel plate comprises a steel plate body, the steel plate body comprises an upper end part, a middle main body, a first side end part, a second side end part, a first lower end part and a second lower end part, and the upper end part, the middle main body, the first side end part, the second side end part, the first lower end part and the second lower end part are of an integrated structure; the upper end is arranged at the upper end of the middle body, the first lower end is arranged at the lower end of the middle body, the second lower end is arranged at the lower end of the first lower end, the first side end is arranged on one side of the middle body, and the second side end is arranged on the other side of the middle body. The upper end part, the middle main body, the first side end part, the second side end part, the first lower end part and the second lower end part are all clung to the femur; a first nail placing hole is formed in the end part of the first side; and a second nail placing hole is formed in the end part of the second side. Through the application of the device, the parallel hollow nails can be accurately nailed, the most stable fixing effect is achieved, repeated operation is avoided, the operation and fluoroscopy duration is shortened, and iatrogenic fractures are avoided.

The invention discloses a medicament for treating femoral head necrosis and neck of femur fracture, which is prepared from drynaria, linaloe, frankincense, myrrh, speranskia herb, Japanese yam, paris rhizome, keel, curculigo rhizome, dipsacus root, campeachy wood, sandalwood, Eupolyphaga Sinensis Walker, and dog's bone.

The invention relates to a fixing device for femoral neck fracture. The device includes a lateral locking plate and a plurality of femoral neck main nails; the main body shape of the lateral locking plate has an anatomical radian conforming to the outer side of the proximal end of a femur, the femoral neck main nails include first, second, third and fourth femoral neck main nails, and the laterallocking plate is provided with a plurality of main nail holes matched with the femoral neck main nails; and the first femoral neck main nail is locked in the central part of a femur neck, the second femoral neck main nail is vertically locked and fixed to the fracture end of the femoral neck, the third femoral neck main nail and the fourth femoral neck main nail are locked tightly to the bone cortices of the left and right femoral necks respectively, and the third and fourth femoral neck main nails spread towards the respective lateral directions. The fixing device taking into account clinicalefficacy and minimally invasive for the femoral neck fracture is provided.

The invention discloses a femoral neck fracture fixation device. The device includes a core rod, a plurality of blades and a locking component. The distal end of each blade contains an outwardly protruding front flange part which is matched and supported by the the inner wall of the bone cavity in a corresponding position. Positioning grooves are axially formed in the outer side of the core rod, the core rod is inserted into the center of the bone cavity and enables the back of each blade to be embedded in the corresponding axial positioning grooves in a matched manner, the core rod is used tosupport the corresponding positions on the inner wall of the bone cavity, and the rear end of the core rod is fixed at the base of the femoral neck. The blades fit the inner wall of the femoral neckinto the bone cavity first, and the destructiveness of the loose bone in the multiple bone cavity is minimized. Appropriate blades are selected and can be fitted to the enlarged part of the inner endof the femoral neck completely, so that the edge contour of each blade completely fits the inner wall of the enlarged part of the bone cavity. After the back of each blade is supported by the core rod, the blades are supported on the inner wall of the bone cavity of the femoral neck in the radial direction.

The invention discloses a femoral neck fracture fixing device which comprises a long and narrow plate body capable of being implanted into a femoral neck so that the two side edges of the plate body can abut against the inner wall of the neck portion of the femoral neck, the outer end of the plate body is connected with a fixing base, a fixing hole is formed in the fixing base, a fixing wire is sleeved with the fixing hole, and the two side edges of the plate body can be provided with blade portions respectively. After the plate body is implanted into the femoral neck, the plate edge can be cut into the inner wall of the neck of the femoral neck. The femoral neck fixing device can be rapidly assembled, and the aim of fixing the femoral neck is achieved. Corresponding fixing plates can be selected according to different fracture parts. The fixing plate can be clamped and fixed to the narrow area of the neck through the fixing plate, and the fracture far end and the fracture near end can be kept corresponding in position and do not swing or twist.

The invention relates to the technical field of medical instruments, in particular to a three-fork type internal fixing device for treating femoral neck fracturs. The three-fork type internal fixing device comprises a side fixing plate, a first femoral neck locking screw, a second femoral neck locking screw, a third femoral neck locking screw and a femoral shaft fixing screw; the head end of the first femoral neck locking screw penetrates through a first threaded locking hole and then is fixed into the femoral head via the femoral neck; a first side hole and a second side hole are formed in the first femoral neck locking screw; and the head end of the second femoral neck locking screw sequentially penetrates through a second threaded locking hole and the first side hole and then is fixed into the femoral head via the femoral neck. The three-fork type internal fixing device is reasonable and compact in structure, the three femoral neck locking screws are mutually connected and locked, and the three femoral neck locking screws and the side fixing plate are locked to form a mechanically stable three-dimensional space structure, so that stress dispersion is uniform, and femoral head rotation, femoral neck collapse, introversion deformity, screw displacement and femoral head cutting can be effectively prevented.

The invention relates to an internal fixing device for treating femoral neck fracture. The internal fixing device comprises a main fixing object and an auxiliary fixing object. The auxiliary fixture comprises a first fixing piece, a second fixing piece and a third fixing piece which are positioned at the near end of the main fixture; a first through hole, a second through hole and a third through hole which are used for accommodating the first fixing piece, the second fixing piece and the third fixing piece are formed in the near end of the main fixing object; the vertical center line of the first through hole coincides with the axis of the main fixing object. The second through hole and the third through hole are symmetrically arranged relative to the axis of the main fixture; in the foresight state, the projection of the second fixing piece coincides with the projection of the third fixing piece, but the projection of the second fixing piece and the projection of the third fixing piece do not coincide with the projection of the first fixing piece. In the top view state, the projections of the first fixing piece, the second fixing piece and the third fixing piece do not coincide with one another, and the second fixing piece and the third fixing piece are located on the two sides of the first fixing piece respectively.

The invention relates to a femoral neck fracture reduction device and an application method thereof. The device includes a first fixed mount and a second fixed mount. One end of the first fixed mountis connected with a first connecting rod through a ball head pair. One end of the second fixed mount is connected with a second connecting rod through a ball head pair. The first connecting rod and the second connecting rod are rotationally connected and locked. The first fixed mount and the second fixed mount are respectively provided with rotatably adjustable bone nail clamps, and the first fixed mount and the second fixed mount are also respectively provided with traction mechanisms for side-to-side adjustment of the bone nail clamps. The femoral neck fracture reduction device can maintaintemporary fixation of the fracture and is simple for reduction.

The invention relates to the technical field of femoral neck fracture restoration, and discloses body posture reminding equipment for patients with femoral neck fractures. The equipment includes a fixing plate, fixed frames are fixedly installed at the upper end of the fixing plate, a limit block is fixedly installed at the upper surface of the middle of each fixed frame, a limit plate is fixedlyinstalled at the upper end of each limit block, a buzzer is fixedly installed at the upper surface of the fixing plate, a fixed block is fixedly installed at the upper surface of the buzzer, and supporting plate strips are fixedly installed at two sides of the upper end of the fixed block. Through the cooperation use of the buzzer, the fixed blocks, supporting plates, a fixing rod, a clamping strip and clamping frames, when the distance between legs of a patient is not normal and reasonable due to body posture turning, the patient can be effectively reminded to recover to a lying state, so that the effective and rapid recovery of a femoral neck is ensured, and the problems that two legs are not separated by a reasonable distance, so that dislocation of hip joint prosthesis is easily caused, healing is more difficult, and recovery of the patient is inconvenient are avoided.

The invention discloses a femoral neck fracture internal supporting type fixing device which comprises an abutting plate matched with the femur in an attached mode, a medullary nail body is inserted in the abutting plate, a control channel penetrating through the medullary nail body is formed in the medullary nail body in the axial direction, and the top end of the medullary nail body is obliquely arranged in a femoral bone through the femoral neck along the femur and connected with a traction end. A control cavity communicated with the interior of the medullary nail body is formed in the traction end, a plurality of hooking claws are arranged on the outer edge of the traction end at intervals along the circumference, the top ends of the hooking claws are hinged to the traction end, and the tail ends of the hooking claws abut against the outer wall of the medullary nail body; the expansion type intramedullary nail is unique in structure and convenient to use, the problems that when an existing expansion type intramedullary nail is used, the operation difficulty coefficient is large, and the risk is high can be effectively solved, and the problems that the existing expansion type intramedullary nail is not firmly fixed, and the fracture position is prone to loosening and displacement are effectively solved.

The invention belongs to the technical field of medical instruments, and particularly relates to the field of A61B17/68, in particular to an implanting tool for an implant for a patient with femoral neck fracture. The implanting tool of the implant for the patient with femoral neck fracture, provided by the invention, comprises a first part and a second part, wherein the first part comprises a first straight part, and the first straight part is provided with an open groove; the first part further comprises an extending part, and the extending part extends from the near end of the first straight part to the reverse side direction of the open groove; an acute angle is formed between the extending part and the first straight part; the second part comprises a second straight part, and the second straight part and the first straight part are arranged in a matched mode through the open groove; and the second part further comprises a hole channel part, the hole channel part is fixedly connected with the near end of the second straight part in a coinciding mode, and the far end is fixedly connected with the second straight part in a separated mode by some distances.

The invention discloses an anti-rotation orthopedic internal fixator which comprises an outer sleeve, positioning components, an operation component and a reset spring. The operation component controls the positioning components to move and comprises a near-end push rod and a far-end sliding rod, the near-end push rod is arranged inside the outer sleeve and slidably connected with the outer sleeve, the far-end sliding rod is arranged inside the outer sleeve and positioned on the inner side of the near-end push rod, the far-end sliding rod is slidably connected with the outer sleeve, the positioning components are arranged at two ends of the far-end sliding rod and detachably connected with the far-end sliding rod, one end of the reset spring is integrally connected with a pipe orifice end, far away from a threaded pipe, of the far-end sliding rod, and the other end of the reset spring is integrally connected with the bottom of the inner side of the threaded pipe. According to the design scheme, the anti-rotation orthopedic internal fixator is anti-rotation, wound caused by a plurality of internal fixators is avoided, blood supply of a fracture end is effectively protected, damage to the blood supply of the fracture end and a part without fracture is avoided, ischemic necrosis of some parts is avoided, and the anti-rotation orthopedic internal fixator has great significance for avulsion fracture, diaphysis fracture, femoral neck fracture and the like.

The invention discloses a femoral neck fracture percutaneous operation auxiliary device. The device comprises a puncture needle, a first module and a second module; the first module is a straight parallelepiped; a smaller included angle formed between the front surface and the side surface of the first module is 45-55 degrees; the first module is provided with a guide channel starting from the center of the front face in a direction parallel to the side face and the bottom face; the first module is also provided with a plurality of secondary guide channels; a plurality of the secondary guide channels are symmetrically distributed on the two sides of the guide channel in an even number; the inlet holes, on the front surface of the first module, of the secondary guide channels and the inlethole, on the front surface of the first module, of the guide channel are staggered; a plurality of the secondary guide channels are obliquely arranged relative to the guide channel; and the outlet holes, on the back surface of the first module, of the secondary guide channels are close to the outlet hole, on the back surface of the first module, of the guide channel. According to the invention, the puncture needle, the first module and the second module are used in cooperation, the position and angle of a hollow needle can be adjusted conveniently before percutaneous implantation, and the accuracy and stability of the hollow needle during the percutaneous implantation can be improved.

The invention discloses an implanting guiding device for three cannulated screws for femoral neck fracture surgery. The implanting guiding device comprises a guiding plate, the center of the guiding plate is provided with a center circular hole, the right side of the center circular hole is provided with a rhombic circular hole array, any side of the rhombic circular hole array is constituted by three circular holes, the center of the rhombic circular hole array is further provided with a center circular hole, a connecting line of the center circular hole of the rhombic circular hole array andthe center circular hole of the guiding plate is located on a transverse center line of the guiding plate, the upper left corner of the center circular hole of the guiding plate is provided with an inverted trapezoidal circular hole array, the lower left corner of the center circular hole of the guiding plate is provided with a trapezoidal circular hole array, the inverted trapezoidal circular hole array is constituted by four transversely-arrayed circular holes, three transversely-arrayed circular holes and two transversely-arrayed circular holes in an arrayed mode in sequence, the trapezoidal circular hole array is constituted by two transversely-arrayed circular holes, three transversely-arrayed circular holes and four transversely-arrayed circular holes in sequence, and one side edgeof the guiding plate is provided with scales. Through in-vitro precise positioning, the three cannulated screws in the femoral neck fracture surgery are quickly and accurately implanted.

The invention discloses an angle-stabilizing tension lock nail for femoral neck fracture. The overall shape of the angle-stabilizing tension lock nail is that the outer diameters of two ends are larger than the outer diameter of a middle section, a fixing thread is arranged at the top end of a nail body, the tail part of the nail body is locked with a main nail, a nail cap is arranged at the tail end of the nail body, and a hexagonal screwing structure is arranged on the end face of the nail cap; and if the locking degree of the tension lock nail is not enough, another small nail body can be screwed into an open groove formed in the tail of the tension lock nail, so that the tail of the tension lock nail is expanded and then is thickened by 0.1 mm, the locking effect of the tension lock nail and the main nail is further enhanced, and therefore, the angle-stabilizing fixation of the femoral neck fracture is realized. The tension lock nail is reasonable in structure and good in mechanical property, broken end pressurization can be implemented, angle stability of fixation after the femoral neck fracture, greater trochanter vertex nail entering, fracture line leaving and no interference on fracture end blood supply can be achieved, shearing force caused by early exercise can be completely resisted, compared with fulcrum inward movement of an extramedullary locking system, the length of a shearing force arm is greatly reduced, and meanwhile, the nail withdrawing effect when necessary is kept.