150 results about "Hip joint replacement" patented technology

The invention discloses a calculation method and system for the optimal placement orientation of an acetabular cup in a total hip joint operation, and belongs to the field of surgical instruments. The calculation method comprises the steps that CT data of a patient is obtained, a three-dimensional model is constructed, point locations in the three-dimensional model are recognized, a three-dimensional coordinate system is established according to a pelvis mark point and a femoral head rotation center point, and the optimal placement orientation of the acetabular cup is calculated; and determining the initial position of femoral motion according to the femoral head rotation center point and the femoral mark point. And drawing a space femoral neck movement range according to the femoral form and a preset hip joint movement range. The centroid of the curved surface is calculated based on the space femoral neck movement range, the rotation center point of the femoral head serves as the starting point and extends towards the centroid to form a ray, and the orientation of the ray in three-dimensional coordinates serves as the optimal placement orientation of the acetabular cup. According to the method, the individualized thighbone shape and the joint movement range of a patient are considered, the optimal acetabulum orientation is given according to different prostheses, and a definite operation target and guidance are given to an operator, so that the dislocation risk after hip replacement is reduced, and the acetabular cup placement reliability is greatly improved.

The invention discloses a hip replacement postoperative gait dynamics prediction method based on discrete optimal control, and belongs to the field of clinical medical auxiliary prediction. The implementation method comprises the steps that kinematics data are collected through a preoperative gait motion capture experiment, muscle activation signals are collected through a surface myoelectricity system, and on this basis, a neuromuscular control strategy of a patient is obtained through a neural network; predicting the gait motion characteristics of the postoperative patient based on discrete mechanics and an optimal control method, and predicting the postoperative muscle activation degree by using the neuromuscular control strategy; by comparing the muscle activation degrees before and after the operation, the influence of the replacement operation on the muscle force change of the hip joint of the patient is investigated. According to the method, discrete optimal control and the neural network are combined, the learning characteristics of human nerve-muscle control are considered while the physical characteristics of the system are not deviated, personalized muscle control strategies better conforming to different patients can be found, and personalized prediction of postoperative gait dynamic characteristics is achieved.

Hip arthroplasty trial systems and associated medical devices, methods, and kits are described that can be utilized in situ to complete a femoral head trial. An example embodiment of a hip arthroplasty trial system includes a medical device and a femoral stem. The medical device has a head member, a spacer, a shaft, and a locking member. The spacer is disposed within the head member and is moveable from a first position to a second position. The shaft is disposed within the head member and contacts the femoral stem. The shaft is moveable from a first position to a second position. Movement of the shaft from the first position to the second position moves the spacer from its first position to its second position. The locking member is disposed within the head member and releasably attaches the shaft to the head member.

A trial femoral assembly for hip arthroplasty and associated method of use is disclosed that includes a head, a neck connected to the head, and a stem or broach connected to the neck, wherein the neck is expandible and collapsible. Also, the stem or broach can move laterally in relation to the longitudinal axis of the neck. A first embodiment includes a notched rod located within a housing and within a circular lower neck portion having a tilted spiral cam that interacts with the notched rod to provide movement involving extension or retraction of the neck. A second embodiment includes a bevel gear located on an outer surface of the head that engages a screw located inside the head to move the neck to provide extension or retraction. A third embodiment includes at least three nested, telescoping threaded elements with oppositely handed threads that extend or retract the neck.

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.

Systems and methods for impingement analysis are disclosed herein. A method includes receiving a three-dimensional model of a human anatomy comprising a spinopelvic joint; receiving input related to a spinopelvic condition of a patient; determining at least one of a sacral slope or a lumbar lordosis of the patient based on the input; classifying the spinopelvic condition of the patient based on at least one of the sacral slope or the lumbar lordosis in a plurality of positions; modifying the three-dimensional model based on the spinopelvic condition and a placement of an implant; performing at least one simulation of one or more activities with the modified three-dimensional model; and displaying an impingement analysis on a display device based on the at least one simulation.

The invention provides a multi-disease artificial intelligence surgical robot system for the whole orthopedics department, and the system comprises a total hip joint replacement module which is used for preoperative planning, intraoperative total hip joint replacement and real-time display; the total knee joint replacement module is used for preoperative planning, intraoperative total knee joint replacement and real-time display; the unicondylar joint replacement module is used for preoperative planning, intraoperative unicondylar joint replacement and real-time display; the acetabulum periphery osteotomy module is used for pre-operation planning, acetabulum periphery osteotomy during operation and real-time display; the sports medicine module is used for bone tunnel planning and ligament reconstruction and real-time display; the spine screw placement positioning navigation module is used for positioning navigation and real-time display of intraoperative spine screw placement; and the trauma positioning and navigation module is used for performing trauma positioning and navigation and real-time display during operation. According to the embodiment of the invention, the auxiliary operation can be quickly and accurately carried out.

The invention discloses a hip replacement lower limb equal-length control system and method based on individualized three-dimensional modeling. The hip replacement lower limb equal-length control system comprises a data preprocessing module, a medical image processing module, a dynamic implantation simulation module, a biomechanical analysis module, a guide plate generation module and a postoperative evaluation module. The method comprises the following steps: acquiring bilateral lower limb CT data and carrying out multi-modal registration; segmenting a skeleton structure by using a deep learning model, and constructing a three-dimensional model; reconstructing a complete sphere through affected side femoral head multi-plane fitting, and determining a target femoral head center in combination with uninjured side mirror image data; dynamically adjusting the space posture of the prosthesis to enable the center of the prosthesis head to coincide with the center of the target; performing finite element analysis to optimize stress distribution; and generating a 3D printing file of the individualized osteotomy guide plate and the positioning pointer. According to the method, preoperative accurate planning, intraoperative real-time control and postoperative quantitative evaluation are achieved, the operation precision is effectively improved, and complications of unequal lengths of lower limbs are avoided.

The invention discloses a kinematics monitoring method for rehabilitation after hip replacement, and relates to the technical field of kinematics monitoring. Comprising the following steps that monitoring elements are arranged, IMU sensor groups are arranged at hip joints and thighs, and a power module, a processor and a Bluetooth communication module are worn on a human body; data acquisition: the IMU sensor group acquires vector data of hip joints and thighs and transmits the vector data to the processor, the processor transmits the data to the PC terminal through the Bluetooth communication module, the PC terminal calculates a quadruple of hip bone angles and a quadruple of leg bone angles at the same time, then subtracts the quadruple of hip bone angles and the quadruple of leg bone angles to obtain a quadruple of relative included angles, and calibrates the quadruple of relative included angles; a plurality of standard poses in rehabilitation evaluation after hip replacement are selected as calibration references. A corresponding monitoring scheme is designed based on the multiple IMU sensors, a software and hardware system is formed, the hip joint angle of the patient is measured and calculated in real time, and a doctor is assisted in evaluating and guiding the postoperative rehabilitation exercise intensity of the patient.

The invention discloses a multi-cavity drainage perfusion system which comprises a drainage tube body, a limiting sleeve, a liquid collection device and a three-way valve. The drainage tube body is composed of four independent drainage tubes, each drainage tube is provided with a tube wall, a side drainage hole, a central pipeline, a concave clamping groove, a medicine input pipeline and a convex clamping groove, and the adjacent drainage tubes are detachably connected through the concave clamping grooves and the convex clamping grooves. The liquid collection device comprises a shell, a drainage liquid collection cavity, a medicine input tube, a drainage liquid outflow tube, a medicine distribution cavity, a drainage tube plug and a medicine input tube plug. Modular design is adopted, the four drainage tubes can be flexibly combined or separated for use according to clinical requirements, drainage and medicine infusion of multiple parts are completed in a single puncture hole, and patient trauma and secondary infection risks are remarkably reduced. The device is simple in structure and convenient to operate, is particularly suitable for treating infection around the prosthesis after hip replacement, and has important clinical application value.

The present invention discloses an anti-slip hook device for hip replacement, which is in the field of hip replacement technology. The device comprises an operating table and a hook, a fixing mechanism fixedly mounted on the operating table and used to fix the hook, and a connecting mechanism used to connect the fixing mechanism and the hook, and capable of adjusting the position of the hook relative to the fixing mechanism. The present invention provides multiple sets of connecting mechanisms and hooks on a fixing mechanism to pull the hook, thereby replacing the pulling of the hook by medical staff, reducing the workload of medical staff, and increasing the stability of the hook pulling process, thereby preventing the hook from slipping and affecting the surgery.

A hip joint navigation system is provided that includes a base having at least one channel disposed therethrough for receiving a pin for mounting the base to the pelvis. A mount feature is disposed on a top surface. A registration jig is configured to couple with the base and to engage anatomical landmarks. In some aspects, a patient specific jig system for hip replacement is provided including an engagement surface formed to closely mate to acetabular bone contours of a specific patient and a registration feature configured to be in a pre-determined orientation relative to an acetabulum the patient when the jig is coupled with acetabular bone contours of the specific patient. In other aspects, methods of using the systems are provided.

In another embodiment, a hip joint navigation jig is provided that includes an anatomical interface comprising a bone engagement portion. A registration jig is also provided that is coupled, e.g., removeably, with the anatomical interface. A rotatable member is provided for rotation about an axis that is not vertical when the jig is mounted to the bone adjacent to a hip joint and the registration jig is coupled with the anatomical interface. An anatomy engaging probe is coupled with the rotatable member for rotation about the axis and is translatable to enable the probe to be brought into contact with a plurality of anatomical landmarks during a procedure. An inertial sensor is coupled with the probe to indicate orientation related to the landmarks, the sensor being disposed in a different orientation relative to horizontal when the probe is in contact with the landmarks.

A hip joint navigation system is provided that includes a base having at least one channel disposed therethrough for receiving a pin for mounting the base to the pelvis. A mount feature is disposed on a top surface. A registration jig is configured to couple with the base and to engage anatomical landmarks. In some aspects, a patient specific jig system for hip replacement is provided including an engagement surface formed to closely mate to acetabular bone contours of a specific patient and a registration feature configured to be in a pre-determined orientation relative to an acetabulum the patient when the jig is coupled with acetabular bone contours of the specific patient. In other aspects, methods of using the systems are provided.

The application discloses a kind of postoperative image index automatic measurement methods of hip arthroplasty, belong to medical image processing technical field, first obtain original data set;Marking is obtained to obtain segmentation data set and key point detection data set, and image data is carried out data enhancement and data preprocessing;Using segmentation model, segmentation data set is handled to obtain region of interest;Using key point detection model combines Gaussian heat map regression method to detect key point in region of interest image;Finally, according to the position of key point, the four parameters of patient after hip arthroplasty are calculated, to accurately evaluate the condition of patient after hip arthroplasty surgery is carried out.The application uses deep learning measurement method to automatically measure some important indexes quickly, accurately and with high repeatability, solves the pain point of manual labeling, saves manpower and time, has excellent reliability and accuracy, and has application value for clinical diagnosis.

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 belongs to the technical field of medical equipment, and discloses a non-image hip replacement navigation system and method based on transverse ligament positioning, and the system comprises a navigation positioning module, a human body horizontal plane and central axis positioning module, a transverse ligament spatial position positioning module and an acetabulum reconstruction module; the navigation positioning module is used for positioning the pose of the surgical instrument in real time; the human body horizontal plane and central axis positioning module is used for calculating an abduction angle and a front inclination angle; the transverse ligament spatial position positioning module is used for planning the shape and position of the acetabular prosthesis; and the acetabulum reconstruction module is used for implanting a prosthesis according to an intraoperative plan. According to the method, the position of the prosthesis is planned by positioning the acetabular transverse ligament, accurate intraoperative guidance is provided for acetabular grinding and prosthesis placement of a doctor, and the problems that an existing navigation system highly depends on preoperative images and intraoperative registration, so that hip replacement is complex in operation, low in efficiency and the like are solved.

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.

Expandable hip stem implants, systems, and methods of implanting a hip stem during a hip arthroplasty are provided. The implant may include a proximal body having a neck terminating at a free end, a distal stem having a proximal portion coupled to the proximal body and a distal portion, and a plurality of expandable bodies aligned around the distal stem. The plurality of expandable bodies have a collapsed configuration and an expanded configuration such that the plurality of expandable bodies expand radially outward away from one another.

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.

To provide: a trial femoral assembly for hip arthroplasty that includes a head, a neck connected to the head, and a stem or broach connected to the neck, where the neck is expandable and collapsible; and an associated method of use.SOLUTION: An embodiment includes a notched rod located within a housing and within a circular lower neck portion. The circular lower neck portion has a tilted spiral cam that interacts with the notched rod to provide movement involving extension or retraction of the neck. A second embodiment includes a bevel gear located on an outer surface of the head that engages a screw located inside the head to move the neck to provide extension or retraction. A third embodiment includes at least three nested, telescoping threaded elements with oppositely handed threads that extend or retract the neck.SELECTED DRAWING: Figure 10

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 utility model provides a hip replacement post-operation horizontal position supporting pad. The pad comprises a pad body; the pad body is made of latex and comprises a convex part and a concave part; the upper surface of the pad body is a curved surface in smooth transition; the upper surface of the convex part corresponds to the curve of the waist of a subject; the upper surface of the concave part corresponds to the curve of the buttocks of a subject; a first cutting groove which is through up and down is formed in the concave part in the length direction of the pad body so as to correspond to the sacrococcygeal region of a subject; a second cut groove which is through in the front-back direction is formed in the concave part in the front-back direction of the pad body, and the second cut groove is used for clamping the urinal pad. The waist is supported by the convex part, and the hip is supported by the concave part, so that the waist can be in a natural posture when a subject lies on the back; a first cutting groove is formed corresponding to the sacrococcygeal part, so that the sacrococcygeal part of the subject is suspended and cannot be pressed; according to the horizontal position supporting pad used after hip replacement, the urinal pad can be clamped in the second cutting groove, and the urinal pad is prevented from forming wrinkles on the bed surface.

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.

A system and method for determining the position of a broach tool used in total hip arthroplasty are disclosed herein, where the broach is still positioned within the femoral canal of the patient's femur, and the position is determined after the broach. Also disclosed herein is an example of a broach tool adapter used to attach a tracking array to the broach tool, the adapter having a body shape that mates with the geometric shape of a particular brand of broach tool and having a common slot defined therein for receiving a tracking array such as attaching the tracking array to the broach tool.

A direct anterior hip replacement trochanter securement apparatus including a trochanter engager, an implant connector configured to securely connect the trochanter engager to an implant in a femur, and a trochanter engager securer configured to securely hold part of the trochanter engager at a point along the femur below the trochanter.

The utility model discloses a femoral stem capable of being automatically aligned when a femoral head is assembled, and belongs to the technical field of medical instruments. The defect that in the prior art, a femoral head and a femoral stem cannot be firmly locked when a traditional femoral head is aligned with the femoral stem is overcome. A main body structure of the device comprises a femoral stem and a femoral head matched with the femoral stem, a cylindrical middle shaft is arranged at the top end of a conical head of the femoral stem, a cylindrical hole and an inner conical hole which are communicated with each other are formed in the femoral head, and the outer conical surface of the conical head on the femoral stem is matched with the inner conical hole in the femoral head. And the cylindrical middle shaft on the femoral stem is matched with the cylindrical hole in the femoral head. The thighbone side hip joint replacement device is mainly used for thighbone side hip joint replacement surgery.

Various embodiments disclosed relate to a method for producing an implant model and associated systems. The method can include receiving patient specific data, producing a preliminary implant model based on the received patient specific data, running a simulation on the preliminary implant model to produce a revised implant model with a range of motion zone using the patient specific kinematics, optimizing the preliminary implant model with a dynamic simulation to determine a cup anteversion angle, analyzing the revised implant model for spino-pelvic risk, and outputting the implant model.

The utility model discloses a hip replacement post-operation dual-purpose body position pad which comprises a first body position pad, a second body position pad is arranged on the right side of the first body position pad, sponge pads are filled in the first body position pad and the second body position pad, and zippers are fixed on the lower end face of the first body position pad and the lower end face of the second body position pad. The first magic tape hook surface is fixed on the lower end surface of the first body position pad, and a second magic tape hook surface is fixed on the right side of the first body position pad; and the first magic tape rough surface is fixed on the lower end surface of the second body position pad. According to the dual-purpose body position pad used after hip replacement, when the lower limb is kept in the abduction neutral position in the horizontal position, the shank is lifted to relieve postoperative edema and promote venous return of the lower limb, and turning over towards the healthy side, the second function of the body position pad is applied, the pad is arranged between the two legs in the side-lying position, the distance between the two legs is fixed, and the distance is kept stable; excessive internal rotation, adduction and excessive hip bending of the affected limb in the healthy side lying position are avoided, and the comfort of a patient and the stability of the body position of the patient are effectively guaranteed.

The invention relates to the field of intelligent detection, and provides a nursing system and method for elderly hip replacement patients. According to the method, electrocardiogram data, time queue data of non-invasive blood pressure, time queue data of pulse blood oxygen saturation, time queue data of end-expiratory carbon dioxide and time queue data of body temperature of a patient in the operation process of old-age hip replacement are analyzed in real time, and then whether the physiological state of the patient in the operation is stable or not is judged. Therefore, a more objective evaluation result can be obtained, the risk of subjective judgment is reduced, potential unstable risks can be found based on real-time analysis, and then a timely intervention basis is provided for medical staff.