59 results about "Hip joint replacement" patented technology

A dynamic reference base (DRB) and associated method are provided for rigidly affixing an array frame to bone for use in navigated or robotic surgery. The DRB includes a bridge element that includes a connecting rod having a distal end and a proximal end; a clamp coupled to the distal end of the connecting rod; a first and a second pin guide extending distally from the clamp; a locking nut disposed on the clamp; and a clutch coupled to the proximal end of the connecting rod, the clutch being adapted to couple to the array frame. The DRB also includes the array frame, which is couplable to the clutch, and is adapted to include a plurality of tracking markers disposed thereon.

SUMMARY OF THE INVENTION An improved system and method for providing proper alignment of a patient's anatomy and hip joint components during hip replacement surgery is provided. In another embodiment, a hip joint navigation tool is provided that includes an anatomical joint surface with a bone-engaging portion. A registration tool is also provided that is coupled, e.g., removably, to the anatomical joint surface. A rotatable member is provided for rotation about a non-vertical axis when the tool is attached to a bone adjacent the hip joint and the registration tool is coupled to the anatomical joint surface. An anatomical structure-engaging probe is coupled to the rotatable member for rotation about the axis and is translatable so that the probe can be brought into contact with multiple anatomical landmarks during surgery. An inertial sensor is coupled to the probe to indicate an orientation relative to the landmarks, the sensor being disposed at a different orientation relative to the horizontal when the probe is in contact with the landmark.

The invention relates to a surgical device for performing a controlled resection of the neck of a femur during a hip replacement procedure. The surgical device comprises a template comprising an aperture dimensioned for receiving a femoral head of the femur, and a frame comprising a resection guide for indicating a resection plane on the femoral neck. The femoral neck has a femoral neck axis. The frame is slidably connected to the template for positioning of the resection guide along the femoral neck axis while the template is mounted on the femoral head.

The invention relates to the technical field of surgical measurement, in particular to a real-time measurement method and system for the length and eccentric distance of lower limbs in hip replacement. According to the technical scheme, the method comprises the following steps that anatomical feature points on the two sides of a patient are obtained, wherein the anatomical feature points at least comprise the positions of anterior superior iliac spines on the two sides and the positions of high points on the inner side and the outer side of ankle joints on the two sides; and according to the obtained anatomical feature points, calculating and establishing a normal position reference plane of the patient. By means of the non-invasive body surface positioning and optical tracking technology, the length and the eccentric distance of the lower limb can be accurately measured in real time in the hip replacement. The method comprehensively considers the change of both sides of the acetabulum and the femur, avoids the trauma risk of traditional invasive navigation and the deviation of single measurement, and provides a quantitative basis for doctors through intraoperative dynamic data feedback and preoperative, intraoperative and postoperative whole-course evaluation, thereby improving the surgical precision and reducing the occurrence rate of complications with unequal lengths of lower limbs.

The magnetic suspension bracket used after hip replacement comprises an upper structural component, a lower supporting structural component and a supporting body, and the supporting body is placed on the upper structural component. The upper structural component, the supporting body and the lower structural component are combined to form a physical distance, so that the abduction degree of the affected leg is kept, and dislocation of the hip joint caused by adduction of the affected leg is avoided. Magnetic materials are placed on the upper structural component and the lower structural component respectively, the upper structural component and the lower structural component are installed oppositely through homopolar magnetism, suspension force is generated through repulsion of the homopolar magnetism, the two structural components freely rotate in the magnetic suspension state, and the lower limbs of a patient can be placed in a relatively free and relaxed body position when the patient sleeps or has a rest in the side-lying position. The lower structural component is of a hollow structure, and when a user lies on the side, the legs do not bear the gravity of the upper affected legs to affect blood circulation. The magnetic suspension principle is ingeniously utilized, the degree of freedom of movement of the two legs and the sleeping habit of a patient are met to the maximum degree while it is guaranteed that the affected leg keeps a certain abduction degree, experience is improved, and postoperative recovery is facilitated.

The invention provides a lower limb length measuring and positioning assistor in horizontal position direct anterior approach hip joint replacement and a measuring method.The lower limb length measuring and positioning assistor comprises a first main body structure, a second main body structure, a first longitudinal connecting rod, a second longitudinal connecting rod and a transverse rod; the first groove structure is connected with a first extension rod, and the first extension rod is connected with one end of the cross rod through a first longitudinal connecting rod; the second main body structure comprises a second groove structure and a second extension rod, the second groove structure is connected with the second extension rod, and the second extension rod is connected with the other end of the cross rod through a second longitudinal connecting rod; the first extension rod and the second extension rod are parallel to the cross rod, the first groove structure is clamped at the anterior superior spine of one side of a patient, and the second groove structure is clamped at the anterior superior spine of the other side of the patient. The anterior superior spine bony marker can be accurately positioned, the angle consistency of the two lower limbs is ensured, the length measurement accuracy of the two lower limbs is ensured, and the length consistency of the two lower limbs after operation is ensured.

The utility model relates to a kind of dislocation-preventing nursing appliances for total hip replacement in the art of joint replacement nursing, including waist belt, the waist belt outside fixed with bracing plate, bracing plate both sides are equipped with connecting plate, two connecting plates bottom are equipped with leg protector, two leg protectors are connected by connecting assembly, for fixing leg, the bracing plate and connecting plate junction are equipped with limiting component, the limiting component includes with the fixed rotating plate of connecting plate one end, the rotating plate outer wall is fixed with rotating block, the bracing plate side close to rotating plate is equipped with two baffle, two baffle are located rotating plate outside, for the leg movement is limited. The utility model is convenient for fixing and controlling leg, avoid patient excessive activity hip joint, to avoid hip joint secondary injury.

1. Name of the product in this design: Icons for the graphical user interface of a robot-assisted surgical system for electronic devices. 2. Purpose of this design: An electronic device. 3. The key design features of this product are: a graphical user interface drawn with solid lines. 4. The image or photograph that best illustrates the design's key features: the front view. 5. Purpose of the graphical user interface: This overall interface is used to operate the robot-assisted surgical system, such as operating the robot-assisted surgical system to perform hip replacement surgery. The area to be protected is the icon on it, and different icons are selected to display different images or patterns on the screen. For example, selecting icon A will display a visualization of the main components and screws previously implanted in the patient; selecting icon B will allow you to use a probe to draw the surface of the acetabular cup after the implanted components have been removed, at which point the interface will display a visualization of the pelvis and the real-time position of the probe; selecting icon C will allow you to use a reamer to evaluate the surface of the acetabular cup after the implanted components have been removed, at which point the interface will display a visualization of the pelvis and the real-time position of the reamer. 6. Human-computer interaction methods of graphical user interface: Interaction can be carried out by clicking, pressing icons, etc. 7. Other situations requiring explanation: This design is a partial appearance design, and the part shown by the dashed line in the view is not the part claimed in this application.

A hip balancing sensor system with an integrated ratcheting adjustment mechanism is provided for determining an optimal femoral head offset during hip arthroplasty. The system includes a femoral head offset tool with a head containing a chamber and a collar configured to attach to a femoral stem. The tool comprises force sensors, an IMU, and a spring system configured to automatically adjust femoral head offset by moving the head relative to the collar within a chamber of the head until force equilibrium is achieved. The head is configured to interface with various acetabular structures including acetabular cups, native acetabulum, or acetabular defects. A sensing controller monitors the adjustment process and detects when spring force equals soft tissue resistance indicating optimal positioning. Upon achieving equilibrium, the surgeon measures the femoral head offset distance using a sizing tool and selects a permanent femoral head implant.

The invention relates to the field of postoperative rehabilitation instruments, and particularly discloses a hip replacement postoperative dislocation prevention cushion structure which comprises a cushion mechanism and a limiting frame mechanism. The seat cushion mechanism comprises a seat cushion assembly, a fixing shaft bracket assembly is arranged at the bottom of the seat cushion assembly, and a pawl assembly is installed on the outer side of the fixing shaft bracket assembly; the limiting frame mechanism comprises a limiting frame assembly rotationally installed on the fixing shaft frame assembly. By arranging the rotatable limiting frame body and the locking structure matched with the ratchet wheel and the pawl, reliable guarantee can be obtained when a hip replacement postoperative patient uses the cushion, after the patient sits, the handle is pulled in the direction of the cushion body, the shaft rod drives the ratchet wheel to rotate, and the limiting frame body is lifted accordingly; after reaching a proper position, the pawl body abuts against the ratchet wheel under the action of the first spring, and reverse rotation of the ratchet wheel is effectively limited; and through the linkage design of the pull rope assembly and the pawl assembly, the laying-down operation of the limiting frame body is extremely simple and convenient.

Provided are hip stems for hip arthroplasty, kits of implant systems, and methods of using said hip stems and kits. The hip stems comprise a stem body having a length formed by a proximal portion, a middle portion, and a distal portion, and a stem neck extending from the proximal portion of the stem body and terminating at a free end. The stem portion comprises a first taper along a length of the middle portion of the stem body causing a width of the stem body to decrease, a second taper along the length of the stem body causing a width of the stem body in the posterior-anterior direction to decrease, and a third taper along a base of the stem neck causing a width of the base in the posterior-anterior direction to increase.

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.

According to the reinforcement learning-based two-dimensional total hip replacement prosthesis type selection method and device, the medium, the program product and the terminal provided by the invention, the prosthesis type selection model is constructed based on the Unity platform and the reinforcement learning algorithm, so that a proper prosthesis is automatically selected according to the medullary cavity condition of a patient and preoperative planning is carried out, the operation efficiency and accuracy are remarkably improved, and the operation cost is reduced. And errors caused by manual operation are reduced. Meanwhile, the model supports personalized setting, a labeling scheme can be customized according to patient requirements, personalized prosthesis type selection is achieved, and individual requirements of different patients are met. Besides, the model has expansibility, can be used for preoperative planning to a certain extent, can be applied to automatic planning in other surgical fields in the future, and has important clinical application value.

The utility model relates to the technical field of medical instruments, and discloses a portable folding chair for an artificial hip replacement postoperative patient, which comprises a chair seat, a back cushion plate and a seat cushion plate are arranged on the chair seat, the included angle between the back cushion plate and the seat cushion plate is greater than 90 degrees, and a chest frame for restraining the upper body of the patient is connected onto the back cushion plate; leg clamps which can be folded and stored are arranged on the cushion plate; a foot stool used for restraining the feet of the patient is arranged at the bottom of the front portion of the chair seat, and two rubber bands are fixedly connected to the foot stool. The positions of the upper body, the two legs and the soles of the patient are limited and restrained in sequence from top to bottom through the angle structure of the chair seat, the chest frame arranged on the back cushion plate and used for restraining the upper body of the patient, the leg clamps arranged on the seat cushion plate and used for limiting and unfolding the two legs, and the foot stool matched with the two legs for restraining the lower limbs, so that the posture of the patient is kept correct, and rehabilitation is facilitated; meanwhile, the leg clamp can be folded and stored, so that the leg clamp can be normally used by other people or can be normally used by a patient after rehabilitation, and the use convenience is improved.

The application provides a hip replacement preoperative reconstruction system and device based on intelligent learning, and relates to the technical field of auxiliary medical instruments.The hip replacement preoperative reconstruction system based on intelligent learning comprises an image quality evaluation module, an image fusion evaluation module and a prosthesis planning module.The image quality evaluation value obtained through image data is used to determine whether to perform image quality optimization, then the image fusion quality evaluation value obtained based on image fusion quality data is used to determine whether to perform image fusion quality optimization, and finally the prosthesis planning evaluation value obtained based on the prosthesis position data, the image fusion accuracy, the image quality evaluation value and the image fusion quality evaluation value is used to determine whether to perform feedback, so that the selection of the hip joint prosthesis position is optimized, and the correlation between the hip replacement preoperative reconstruction process and image quality is improved, thereby solving the problem of low correlation between the hip replacement preoperative reconstruction process and image quality in the prior art.

The present invention relates to a method for interactively designing via an implant design platform an artificial joint implant for hip arthroplasty and corresponding broaching and osteotomy guide apparatuses. The proposed implant design platform reconstructs the anatomy of the patient's pelvic and femoral bones in a 3D digital environment, and accordingly develops a patient-specific femoral implant stem as well as patient-specific surgical tools broach / rasp, osteotomy guide) used in total 10 hip arthroplasty. The patient-specific femoral implant stem developed may be optimized to ensure optimum mechanical performance for the patient, employing complex internal lattices that minimize stress shielding and advanced trabecular surfaces to promote osseointegration.

The application discloses a positioning guide and an additive manufacturing method thereof. The positioning guide is used for hip arthroplasty and comprises a positioning base, a main guide structure and first and second guide piles arranged on both sides of the main guide structure. The positioning base comprises first and second fitting parts respectively fitted with local bony surfaces on both sides of a patient's acetabular notch and a connecting part connecting the first and second fitting parts. The main guide structure is arranged on the connecting part and has a guide channel for accommodating a handle of a surgical tool to exert geometric constraint on a placement direction of an acetabular reamer tool. The guide channel is determined according to an acetabular cup designed to a target anatomical position and a simulation handle arranged in association with the acetabular cup. The first and second guide piles are used for guiding the arrangement of Kirschner wires to fix the positioning guide to the acetabular region of the patient, thereby improving the accuracy and stability of acetabular polishing and acetabular cup implantation.

An orthopaedic system for use in a direct anterior approach orthopaedic hip replacement procedure on a patient's femur includes a proximal guide instrument (14) for guiding a flexible insertion instrument (12) for placing a cement restrictor component (16, 18). A method for placing a cement restrictor component during performance of a direct anterior approach orthopaedic hip replacement procedure is also disclosed.

A safety broach for use in arthroplasty for hip joints, and a system including the same. The system may further include a segmented or otherwise flexible reamer and an implant. The safety broach includes a hollow interior passage that serves to guide the reamer when the safety broach is in place in the bone. The system may include any number of sizes of safety broaches, segmented reamers, and implants. In any case, such a safety broach may be capable of assisting with arthroplasty for hip joints (or any other joint), while typically providing enhanced safety and reliability of the arthroplasty.

The invention relates to a hip replacement post-operation body position control system based on intelligent identification, and belongs to the technical field of medical instruments, the hip replacement post-operation body position control system comprises a waist fixing and limiting belt, two sides of the waist fixing and limiting belt are provided with fixing belt assembly connecting plates, the waist fixing and limiting belt is respectively connected with an elastic fixing belt and a rigid fixing belt through sliding locking grooves, and the inner side of the rigid fixing belt is provided with an adaptive limiting inflatable bag. A limiting fixing table is arranged at the front end of the waist fixing limiting belt and connected with a quarter-arc rotating plate through a rotating hinge fixing plate, a rotating connecting rod is arranged in an outer arc sliding groove of the rotating plate, and the lower end of the connecting rod is connected with a thigh inner side limiting fixing sleeve through a fixing connecting plate. The thigh outer side movable limiting frame comprises an electric rotating unit capable of rotating in multiple directions and is connected with the thigh outer side fixing plate through a length adjusting mechanism. The system intelligently coordinates all execution units through the central controller, active protection under multiple postures of lying in bed, sitting up, walking and the like is achieved, the movement range of hip joints can be dynamically limited, timely intervention is conducted when dangerous actions occur, the joint dislocation risk is effectively reduced, and rehabilitation safety is improved.

It is an objective to provide accurate measurements of a patient's leg length and joint offset, and to provide for those leg lengths and joint offsets to be visualized using conventional equipment. [Solution] A hip joint navigation system is provided that includes a base having at least one channel disposed therethrough for receiving a pin for attaching the base to a pelvis. An attachment feature is disposed on the upper surface. A registration jig is configured to couple with the base and engage an anatomical landmark. In some aspects, a patient-specific jig system for hip joint replacement is provided that includes an engagement surface configured to closely mate with the acetabular bone contour of a particular patient and a registration feature configured to be in a predetermined orientation relative to the patient's acetabulum when the jig is coupled with the acetabular bone contour of the particular patient. In other aspects, a method of using the system is provided.

The utility model relates to an anti-dislocation limiting device used after hip replacement, which comprises a left sponge, a right sponge, a left limiting mechanism arranged on the left sponge and a right limiting mechanism arranged on the right sponge, the left limiting mechanism comprises an arc-shaped cavity formed in the left sponge, a rotating shaft fixedly arranged on one side of the left sponge, an arc-shaped plate with one end rotationally arranged on the rotating shaft, an arc-shaped limiting plate fixedly arranged at the other end of the arc-shaped plate, a first limiting hole formed in the arc-shaped limiting plate and a plurality of second limiting holes formed in the left sponge. The limiting rod is movably arranged on the left sponge, and the binding assembly is arranged on the left sponge; the left limiting mechanism and the right limiting mechanism are the same in structure. By using the limiting device, patients with different leg lengths can be better adapted, and the limiting effect and the comfort of the patients are improved.

Provided herein is a computer-implemented method including obtaining values for non-modifiable risk factors, each defining an immutable patient characteristic determined to impact a likelihood that a complication results from an arthroplasty procedure. The system obtains first candidate values for modifiable risk factors of the patient defining a mutable characteristic of the patient or the arthroplasty procedure. The first candidate values are determined to minimize the likelihood that the complication results from the arthroplasty procedure. The system obtains second candidate values for the modifiable risk factors of the patient determined to maximize the likelihood that the complication results from the arthroplasty procedure. The system determines a personalized risk interval that represents a range of modifiable risk for the patient with respect to the arthroplasty procedure including determining (i) a lower bound and (ii) an upper bound for the personalized risk interval; and providing an output indicative of the risk interval.

1. The name of the design product: icon of robot-assisted surgery system operation graphical user interface of electronic device. 2. The use of the design product: an electronic device. 3. The design points of the design product: the solid line drawn graphical user interface. 4. The picture or photo that best shows the design points: front view. 5. The use of the graphical user interface: the overall interface is used to operate the robot-assisted surgery system, such as operating the robot-assisted surgery system to perform hip replacement surgery, etc. The part requested to be protected is the icon thereon, which is used to prompt that the robot-assisted surgery system is currently in the "extended haptics" mode, and the opening angle of the conical haptics boundary of the cutting tool has exceeded its standard state. 6. The human-computer interaction mode of the graphical user interface: when the robot-assisted surgery system enters the "extended haptics" mode, the interface will display the icon. After the user switches the robot-assisted surgery system out of the "extended haptics" mode, the icon disappears from the interface. 7. Other circumstances that need to be explained: this design is a partial design, and the part shown by the dashed line in the view is not the part claimed in this application.

The invention provides an auxiliary positioning device for hip joint replacement prosthesis implantation, a hip joint replacement prosthesis at least comprises an acetabular cup, the auxiliary positioning device comprises a lining body, a supporting structure and an optical positioning array, the lining body comprises a first surface and a second surface, and the first surface of the lining body is attached to the inner surface of the acetabular cup; one end of the supporting structure is mounted on the second surface of the lining body, and a supporting surface is formed at the other end of the supporting structure; the optical positioning array is installed on the supporting face, and the implantation state of the acetabular cup in the hip replacement surgery is verified based on collected pose data of the optical positioning array. The auxiliary positioning device provided by the invention can be arranged in an acetabular cup in an operation, is compatible with a navigation system of an orthopedic robot, captures pose data in real time, shortens verification time, improves verification precision through data measurement of a three-dimensional space, is simple to operate, and contributes to improving the precision of prosthesis implantation execution of the orthopedic robot.

The invention discloses an acetabulum center polishing and positioning method and an acetabulum center positioning and guiding device. CT data and nuclear magnetic data are utilized to reconstruct a complete acetabulum three-dimensional model; positioning a true acetabular bottom; importing an acetabular prosthesis model, and adjusting the acetabular prosthesis model for bone matching; if the matching is successful, determining a front rake angle, an abduction angle, a model, an implantation position and a central axis of the acetabulum prosthesis, and determining a thickness A of the acetabulum needing to be ground; the guiding device is placed at a preset position in the acetabulum; after correct placement, the kirschner wire is drilled into a guide hole of the guide device until the kirschner wire is drilled into the acetabulum opposite-side cortical bone; taking down the guide device, measuring the residual length of the tail end of the kirschner wire as B, sleeving the acetabulum file into the kirschner wire, and operating the acetabulum file to push forwards along the kirschner wire for grinding until the length of the tail end of the kirschner wire is A + B; therefore, the optimal matched front inclination angle, abduction angle, acetabulum model and implantation position can be provided, positioning guidance is provided for acetabulum grinding, and the hip joint replacement difficulty is reduced.

Systems and methods for use of an instrument for preparing a bone for joint replacement is provided. In various embodiments, the instrument comprises a tool frame, a drive interface, a drive shaft, at least one torque interface, and a plurality of bone sculpting tools interlocked to form at least one continuous loop. Methods and systems for preparing a femur for total hip arthroplasty are also provided.

The present invention relates to a femoral implant for animals, and more particularly, to a femoral implant for animals, which can perform hip arthroplasty for animals, firmly fix the implant to the femur of the animal by means of spontaneous bone growth of the animal to prevent complications such as aseptic loosening that can occur when using bone cement, bone resorption around the cement, etc., and which is formed with a plurality of voids in a porous portion and is relatively weak in strength, is protected by a support portion formed with a solid surface and is relatively strong in strength to secure prevention of damage problems such as chipping or bending due to friction between the edge of the porous portion and the bone or external force during insertion of the femoral implant into the femur of the animal, and block various inflammatory reactions and the like problems caused by the penetration of porous particles into blood vessels due to damage to the porous portion.

The invention discloses a surface hip joint replacement prosthesis, and relates to the technical field of medical prostheses, the surface hip joint replacement prosthesis comprises an acetabular cup and a ball head, the ball head is located in the acetabular cup, the ball head and the acetabular cup can rotate relatively, a groove structure and a boss are arranged outside the acetabular cup, an anti-rotation groove is formed in the inner wall of the ball head, and the anti-rotation groove is located in the acetabular cup. A central spindle is arranged in the ball head, and a threaded structure is arranged on the central spindle. The groove structure on the acetabular cup can be embedded with bone cement and is resistant to rotation and disengagement, the boss of the acetabular cup can further improve the bonding strength with the bone cement, and the prosthesis is prevented from retreating; the anti-rotation groove in the ball head is used for being embedded with bone cement and resisting rotation, and the core shaft and the thread structure of the ball head can improve the bonding strength with the bone cement.

Apparatus and method of removing a liner attached to an implanted acetabular shell. A surgical site is accessed where the acetabular shell has already been implanted into a patient. A rim plate having a through opening is placed over the acetabular shell. A pilot hole is then drilled into the attached liner through the opening in the placed rim plate. After the drilling, the rim plate is removed to expose the drilled hole. A removal tool is inserted into the drilled pilot hole. The attached liner is then disengaged from the implanted acetabular shell with the inserted removal tool.