17 results about "Intertrochanteric fracture" patented technology

The invention relates to the technical field of clinical medicine, and discloses an intertrochanteric fracture postoperative progressive rehabilitation system, which comprises an intertrochanteric fracture comprehensive data acquisition module, a dynamic data monitoring module, a rehabilitation scheme generation module, a rehabilitation execution module, a rehabilitation mode adjustment module, a diet structure adjustment module and a rehabilitation interaction feedback module, the intertrochanteric fracture comprehensive data acquisition module is responsible for acquiring static and semi-dynamic data of a rehabilitation full cycle, the dynamic data monitoring module monitors physiological and motion change data of a patient in daily activities in real time, the rehabilitation scheme generation module generates a personalized stage rehabilitation scheme, and the rehabilitation execution module executes a full-process rehabilitation action. The rehabilitation mode adjusting module is used for adjusting a rehabilitation exercise mode, the diet structure adjusting module is used for optimizing a diet structure, and the rehabilitation interaction feedback module is used for collecting feedback so as to correct the scheme.

A femoral intertrochanteric fracture opening system is characterized by comprising a sleeve, a hollow sleeve core and a hollow trephine, an impact portion is arranged at one end of the sleeve, a plurality of sawteeth are arranged on the outer ring of the end of the other end of the sleeve, the inner diameter of the sleeve is the same as the outer diameter of the hollow sleeve core, a center hole is formed in the center of the hollow sleeve core, and the hollow trephine is arranged in the center hole. The sleeve is limited and fixed through the hollow sleeve core, and the hollow trephine is limited through the sleeve and the positioning guide pin, so that the accuracy of the opening position is ensured; according to the utility model, the trephine is used for opening, the force is uniform when the trephine is used for opening, and the outer surface of the trephine does not have the situation that the size of the outer surface of a conical drill is always changed, so that the situation that bone blocks on two sides of a fracture line are extruded in the opening process is avoided, and the serious defect that the bone can be extruded open by a traditional drill bit is overcome.

The device comprises a nail rod, a nail cap and an O-shaped pull strap, a sliding groove is formed in the middle of the nail rod in a penetrating mode, a sliding rod is connected to the inner wall of the sliding groove in a sliding mode, a plurality of mounting grooves are symmetrically formed in the outer wall of the nail rod at equal intervals in a penetrating mode, and the O-shaped pull strap is arranged in the mounting grooves. The mounting grooves extend into the sliding groove and are rotationally connected with auxiliary nails, connecting grooves are formed in the positions, opposite to the auxiliary nails, of the outer wall of the nail rod in a penetrating mode, push blocks are fixedly connected to the outer walls of one sides of the auxiliary nails and extend into the connecting grooves, and one end of the sliding rod extends out of the sliding groove and is fixedly connected with a nail cap. The outer wall of the limiting block is sleeved with an O-shaped pull strap, so that the auxiliary nail abuts against the bone wall of a patient, the friction performance of the sliding rod is improved, the nail cap is limited through the limiting block, the limiting block is sleeved with the O-shaped pull strap, the nail rod is limited through the O-shaped pull strap, and secondary reinforcement is conducted on fractured bone fragments of the patient.

An intramedullary intertrochanteric fracture fixation device includes an intramedullary nail having a proximal portion and a distal portion, a neck screw and a set screw assembly. The intramedullary nail defines an angulated opening in the proximal portion and includes an axial bore extending through a proximal end of the nail and into the angulated opening. The proximal portion further includes a compartment defined by an upper stop, a lower stop and a sidewall. The sidewall of the compartment defines a slot. The neck screw is insertable the angulated opening and includes a length and an exterior surface defining a groove. The set screw assembly is pre-operatively assembled within the proximal portion of the intramedullary nail and selectively moveable into the compartment for preventing rotational movement of the neck screw within the angulated opening of the intramedullary nail. The set screw is cannulated to receive a guidewire when pre-operatively assembled.

The present invention provides an intertrochanteric fracture internal fixation system, comprising a plate having a proximal end and a distal end, with the proximal end wrapping around the greater trochanter, forming a three-dimensional structure. This intertrochanteric fracture internal fixation system can fix both coronal and sagittal plane fractures, achieving three-dimensional fixation of the intertrochanteric fracture. It is suitable for fixation of fractures that include both axial intertrochanteric fractures and anterior-posterior separation. Furthermore, this internal fixation system facilitates fixation of small fracture fragments within the fracture site.

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.

The resettable anti-rotation implant is characterized in that the resettable anti-rotation implant comprises an outer sleeve and a pressurizing rotating shaft, a front screw hole and a rear screw hole are formed in the head and the tail of the outer sleeve respectively, and the thread directions of the front screw hole and the rear screw hole are opposite; the pressurizing rotating shaft is inserted into an inner hole of the outer sleeve and is in threaded connection with a front screw hole and a rear screw hole of the outer sleeve at the same time, a plurality of axial long grooves are formed in the front end of the outer sleeve in the circumferential direction of the outer sleeve and divide the outer sleeve into a plurality of expansion elastic pieces, and the expansion elastic pieces are expanded by rotating the pressurizing rotating shaft. The head and the tail of the outer sleeve horizontally move in the opposite directions at the same time, so that the expansion elastic pieces on the outer sleeve expand outwards at the same time, and the holding force of the outer sleeve on the femoral neck is increased. The femoral head cancellous bone repositor has higher holding force in the bone substance of the femoral head cancellous bone, and can be used for repositioning a fracture separation part in a rotating and push-pull manner.

The utility model relates to the technical field of traction tripods, and discloses a reduction traction tripod based on hip and thighbone intertrochanteric fracture traction, which comprises a bottom frame, the top of the bottom frame is provided with a support adjusting component used for adjusting angles, the top of the support adjusting component is rotatably connected with a support component used for supporting joints, and the support component is provided with a traction component used for supporting joints. A positioning assembly used for positioning is arranged in the bottom frame. The supporting adjusting assembly comprises two first rotating rings, the interiors of the two first rotating rings are rotatably connected to the left side of the exterior of the bottom frame, the tops of the two first rotating rings are fixedly connected with first connecting rods, and the right side of the exterior of the bottom frame is slidably connected with two sliding rings. According to the utility model, the flexible adjustment of multiple angles of the tripod is realized, so that the angle of the tripod can be accurately adjusted according to the specific physical conditions of different patients, the fracture parts of the patients can be better fitted in the traction process, and an ideal traction effect is achieved.

The invention discloses an intramedullary nail for outer side wall smashing type femoral intertrochanteric fracture, and belongs to the field of medical instruments, the intramedullary nail comprises a main nail, the main nail is connected with a tension bolt through a duct adjusting mechanism, and the main nail is provided with a lock nail; the hole channel adjusting mechanism is arranged on the main screw and used for adjusting the neck-shaft angle of the lag screw, the hole channel adjusting mechanism adjusts and changes the installation angle of the lag screw on the main screw through the structure of the hole channel adjusting mechanism, and then adjustment of the neck-shaft angle of the lag screw is achieved. The lag screw can cross the outer side wall to crush a fracture line, the problem of supporting failure caused by the fact that the screw penetrates through the fracture line in traditional fixation is avoided, meanwhile, the tip end of the lag screw is more accurately embedded into a main pressure bone small beam column (PCS) at the proximal end of the femur, and the holding force of the screw to the femoral head is improved; the main nail and the femoral shaft are tightly fixed through transverse locking, and rotation and axial displacement of the main nail in the medullary cavity are limited.

The invention relates to the technical field of medical instruments, and discloses a bionic support type intramedullary nail system for femoral intertrochanteric fracture, which comprises a main nail body, a bionic support section is fixedly mounted at the bottom of the main nail body, and a tip is fixedly mounted at the bottom of the bionic support section. A limiting rod extending to the left side of the bionic supporting section is movably installed on the right side of the bionic supporting section, and an anti-rotation supporting rod extending to the left side of the main nail body is movably installed on the right side of the main nail body. The side supporting rod assembly is fixed to the main nail body through threads, the stability of the side supporting rod assembly is enhanced, the transverse fixing mechanism is locked through cooperation of a threaded block, a vertical rod and a fixing block, looseness is prevented, the purpose of preventing a transverse tension screw from moving through a stable structure is achieved, and the purpose of arranging a self-locking structure is achieved through arrangement of an anti-rotation mechanism.

The application discloses an intertrochanteric fracture extramedullary fixing structure. It comprises a screw, a strong oblique nail and a steel plate; the steel plate is fixed on the lateral wall of the intertrochanteric fracture; the screw and the strong oblique nail are both fixed on the femur; the screw, the steel plate and the strong oblique nail are located in different planes and form a triangular structure in space; the screw comprises a proximal screw and a distal screw; the proximal screw is fixed on the proximal end of the femur and is arranged in an inclined manner with the steel plate; the distal screw is fixed on the distal end of the femur and is arranged in a perpendicular manner with the steel plate; the strong oblique nail is arranged in an inclined manner with the steel plate. The application overcomes the shortcomings of the conventional steel plate external fixation, i.e. a plurality of screws need to be punched on the femoral neck to fix the fracture and the fixing structure is unstable; the screw, the steel plate and the strong oblique nail form a triangular structure in space, the structure is stable and the number of screws required at the femoral neck is reduced.

The application discloses an intramedullary fixation device for femoral intertrochanteric fracture, which comprises a nail body, a cavity extending along a longitudinal axis from a proximal end to a distal end is arranged in the nail body, a force carrier system is arranged on the nail body to create a dynamic control at a human femoral neck and femoral head to eliminate stress shielding and realize controllable transverse dynamic force, the force carrier system comprises a movable assembly arranged at the proximal end of the nail body and at least one sliding piece arranged at the distal end of the nail body, the movable assembly serves as a main power source of the transverse dynamic force while playing a connecting and fixing role on the femoral neck and femoral head, and the sliding piece is used for the movable connection between the distal end of the nail body and the femoral body. The application can decompose the stress concentration and stress shielding of the locking nail on the intramedullary nail, enhances the bending strength, and realizes the stability of biomechanics. The proximal end of the intramedullary nail is coated with titanium, has a high friction coefficient, provides initial stability and long-term bone ingrowth effect, and can effectively reduce the occurrence of broken nail, bone nonunion and delayed bone healing.

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 intertrochanteric fracture navigation method and system, and relates to the technical field of intertrochanteric fracture navigation. The intertrochanteric fracture navigation method comprises the following steps: acquiring medical image data of a side hip joint area, and constructing a three-dimensional digital model; identifying a fracture line and a plurality of key bone anatomical mark points in the three-dimensional digital model; marking a near-end head and neck fracture block and a far-end backbone fracture block in the three-dimensional digital model based on a fracture line in the three-dimensional digital model; the method comprises the following steps: extracting a spatial attribute set between a near-end head and neck fracture block and a far-end backbone fracture block in a three-dimensional digital model on the basis of each key bony anatomical mark point in the three-dimensional digital model. The spatial attribute set between the near-end head and neck fracture block and the far-end backbone fracture block in the three-dimensional digital model is based on the spatial attribute set between the near-end head and neck fracture block and the far-end backbone fracture block in the three-dimensional digital model; and the target virtual implantation channel is automatically planned in the three-dimensional digital model in combination with the preset mechanical bearing area parameters so as to be used for navigation planning suggestions, so that the precision of preoperative navigation planning is realized.

The utility model provides a minimally invasive reduction device for femoral intertrochanteric fracture. The minimally invasive reduction device comprises a fixed support, a movable support, a locking structure, a first adjusting assembly, a second adjusting assembly and a push claw. Wherein the fixed bracket is provided with an inner hook claw; the movable bracket is movably mounted on the fixed bracket; the locking structure is arranged between the fixed bracket and the movable bracket and is used for locking the movable bracket on the fixed bracket; the first adjusting assembly is arranged on the movable support. The second adjusting assembly is arranged on the first adjusting assembly; and the push claw is mounted on the second adjusting assembly, is opposite to the inner hook claw and is used for being matched with the inner hook claw to fix and align the fracture end. When the minimally invasive reduction device for the femoral intertrochanteric fracture is used, reduction and fixing operations can be completed through a small incision, continuous manual force application is not needed, the labor intensity is low, meanwhile, operation wounds and pain of a patient are reduced, and postoperative recovery of the patient is facilitated.

The utility model discloses a porous multi-axis intramedullary nail based on intertrochanteric fracture, which comprises an intramedullary nail main body, a locking piece is arranged on the intramedullary nail main body, and an anti-loosening piece is arranged between the intramedullary nail main body and the locking piece; the intramedullary nail body comprises a near-end nail section and a far-end nail section, and a near-end locking screw hole is formed in the near-end nail section. A near-end locking screw hole and a far-end locking screw hole are designed to be provided with multiple holes in different planes, proper paths of a locking nail A and a locking nail B can be selected according to the fracture form and bone distribution, the fixing firmness is improved, stronger three-dimensional fixing is achieved, and strength weakening of the intramedullary nail can be reduced; the locking nail A and the locking nail C are limited through the anti-loosening piece, the locking nail A and the locking nail C are prevented from loosening and falling off, the connecting stability of the locking nail A and the locking nail C and the near-end nail section is improved, the locking nail is particularly suitable for comminuted and complex intertrochanteric fracture and osteoporosis patients, and the risks of sinking, cutting or loosening of the locking nail A and the locking nail C are reduced.

This utility model relates to the field of orthopedic surgical auxiliary instruments, and more particularly to an L-shaped arm fixation device for intertrochanteric fracture traction bed surgery, comprising a positioning rod and a support plate; a support plate for supporting the arm is installed on the outer side of the positioning rod, and a C-shaped clamp for engaging and limiting the position with the headboard is installed at one end of the positioning rod and the support plate; a rubber pad is installed inside the upper end of the support plate, and a grid plate is provided above the rubber pad at the upper end of the support plate; a connecting rod for telescopic adjustment of the position of the support plate is installed inside the positioning rod. This utility model achieves an L-shaped fixation structure by connecting the support plate and the positioning rod with the connecting rod, which is ergonomic and effectively avoids compression of the brachial plexus and ulnar nerve, reduces discomfort such as pain and numbness, and lowers the risk of nerve damage. Furthermore, the use of magnetic buckles to connect the ligaments ensures a clear surgical field, facilitates surgical operation, and improves the safety and precision of the surgery.