58 results about "Hip arthroplasty" patented technology

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.

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.

An acetabular prosthesis (100) for use in hip arthroplasty surgery includes an acetabular cup cage (102) assembly including an outer cup cage (110) and an inner cup cage (210). The outer cup cage includes a hemispherical cup (112) and a mounting flange (114). Similarly, the inner cup cage also includes a hemispherical cup (212) and a corresponding mounting flange (214). The hemispherical cups of the inner cup cage are sized to be received into the hemispherical cups of the outer cup cage, and the two cup cages are rotatable relative to each other to position the mounting flange into a desired position on the patient's hip bone.

Systems and methods for planning a hip arthroplasty for a patient are disclosed. The method includes obtaining a computer model of the patient's hip joint, determining anatomical angles associated with the bony anatomy, determining muscle attachment locations on the bony anatomy, and generating a 3D mathematical model of the hip joint including bony and muscular anatomical properties based on at least the measurements and the muscle attachment locations. The method further includes determining an initial surgical plan including a set of implant parameters based input related to the hip joint. The method further includes identifying differences between the pre-operative and post-operative muscle properties based on the initial surgical plan and the 3D mathematical model, optimizing the implant parameters based on the identified differences, and generating an optimized surgical plan based on the optimized implant parameters.

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 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.

A dual mobility prosthetic bearing comprises: an outer femoral head component (9020) having a part-spherical outer bearing surface (9022) and a head recess (9024) comprising a proximal portion (9026) defined by a part-spherical inner bearing surface and a distal portion (9028) defined by a generally tubular inner bearing surface, the proximal portion having a maximum diameter that is greater than a maximum diameter of the distal portion; an inner femoral head component (9030) having a neck recess (9032) for receipt of a femoral neck component (9004), and a part-spherical outer bearing surface (9034) configured to be received within the proximal portion of the head recess; wherein the part-spherical outer bearing surface of the outer femoral head component and the part-spherical outer bearing surface of the inner femoral head component have a coincident centre of rotation; and wherein the inner femoral head component comprises a generally tubular skirt (9036) configured for receipt within the distal portion of the head recess.

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.

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

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 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.

A trial femoral assembly (10) for hip arthroplasty is disclosed that includes a head, a neck (12) connected to the head, and a stem (22) or broach connected to the neck, wherein the neck is expandable and collapsible. Also, the stem or broach can move laterally in relation to the longitudinal axis (16) of the neck. A first embodiment includes a notched rod (60) located within a housing (54) and within a circular lower neck portion having a tilted spiral cam (52) that interacts with the notched rod to provide movement involving extension or retraction of the neck. A second embodiment includes a bevel gear (80) located on an outer surface of the head that engages a screw (92) located inside the head to move the neck to provide extension or retraction. A third embodiment includes at least three nested, telescoping threaded elements (102, 104, 106) with oppositely handed threads that extend or retract the neck.

An acetabular shell liner for use in a hip arthroplasty surgical procedure is disclosed. The acetabular shell liner includes a semi-hemispherical inner bearing layer, which includes a rim and a dome attached to the rim. The semi-hemispherical inner bearing layer includes a polymeric material having a first thickness, at an apex of the dome, and a second thickness, at the rim, that is less than the first thickness. Additionally, the acetabular shell liner includes a semi-hemispherical outer reinforcement layer mated with and encasing the dome of the semi-hemispherical inner bearing layer. The semi-hemispherical outer reinforcement layer includes a metallic material to provide structural support to the semi-hemispherical inner bearing layer.

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 application provides a kind of based on deep learning's full hip joint postoperative leg length difference calculation method and system, it is related to medical technology field, can realize the accurate evaluation of the postoperative condition of the patient of full hip arthroplasty surgery, method includes: obtaining the hip image of the patient after hip arthroplasty surgery;Based on the target recognition network of deep learning, identify the bilateral femur region in hip image, ischium region, the first key point position located in bilateral femur region and the second key point position located in ischium region;According to the first key point position, second key point position and ischium region, determine the leg length difference of the patient's double legs.The system executes the method.The application is based on the hip image of the patient after hip arthroplasty surgery, calculates the leg length difference of the patient's double legs after hip arthroplasty surgery, and realizes the accurate evaluation of the recovery condition of the patient after hip arthroplasty surgery according to the leg length difference of the patient's double legs.

The present application relates to hip replacement technical field, and disclose a kind of hip replacement post anti-dislocation positioner and its using method, including mounting frame, further comprising: fixed component, fixed component includes screw hole rod, the end of screw hole rod is rotatably connected with the surface of mounting frame, and the inner wall of screw hole rod is threadedly connected with threaded rod;Protection component, protection component includes telescopic plate, and the end of telescopic plate is fixedly connected with round hole rod, and the inside of round hole rod is sleeved with semicircle frame.The surface of mounting frame of the present application is provided with fixed component, and fixed component can be tied at the torso of patient, after fixed component is fixed at the torso of patient, protection component can be positioned, after protection component is fixed, it is pushed to move downward, when protection component moves downward, it will contact with the hip joint of patient and position hip joint, avoid hip joint to appear the condition of falling off, inside protection component is provided with stabilizing component, when protection component is sleeved at the hip joint of patient.

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.

An acetabular prosthesis for use in a hip arthroplasty surgical procedure is disclosed. The acetabular prosthesis includes a ceramic acetabular shell liner component configured to be secured to an acetabular shell component. The acetabular prosthesis also includes a metal ring affixed to and encircling the ceramic acetabular shell liner component. The acetabular prosthesis also includes an augment molded to and distally extending from the metal ring. The augment is shaped to modify a range of motion of a femoral prosthetic component when the femoral prosthetic component is fitted into the ceramic acetabular shell liner component. Other embodiments are also disclosed.

The invention provides a biological ceramic lining for an artificial hip joint replacement operation, and belongs to the technical field of medical clinical and biological materials. Comprising a shaft rod, the outer side of the shaft rod is sleeved with a transmission sleeve rod, and the outer side of the transmission sleeve rod is sleeved with a limiting sleeve rod; and the fixing assembly is used for fixing the ceramic lining and assisting in press-fit installation of the ceramic lining, and the fixing assembly is connected with the transmission sleeve rod and the limiting sleeve rod. The ceramic lining is arranged, the titanium layer, the coarse titanium layer and the hydroxyapatite coating are sprayed on the acetabular surface of the ceramic lining step by step, finally, a sandwich structure is formed on the acetabular surface of the ceramic lining, the sandwich structure is directly in press fit with the acetabulum in the operation, osseointegration is achieved, an acetabular cup prosthesis does not need to be used any more, and the manufacturing cost is reduced. The problems that in the prior art, an acetabular cup and a ceramic lining are mistakenly assembled, deformation is caused when the metal acetabular cup is pressed and matched, and consequently the ceramic lining is broken, and the abnormal sound occurrence rate is increased are solved to a certain extent.

This invention provides a bioceramic liner for total hip replacement surgery, belonging to the fields of medical clinical and biomaterials technology. It includes a shaft with a transmission sleeve sleeved on its outer side, and a limiting sleeve sleeve sleeved on the outer side of the transmission sleeve sleeve; and a fixing component for fixing the ceramic liner and assisting in press-fitting the ceramic liner. The fixing component is connected to both the transmission sleeve sleeve and the limiting sleeve sleeve. This invention, by setting a ceramic liner and progressively spraying a titanium layer, a coarse titanium layer, and a hydroxyapatite coating onto the acetabular surface of the ceramic liner, ultimately forms a sandwich structure on the acetabular surface of the ceramic liner. During surgery, it directly presses against the acetabulum, achieving osseointegration. This eliminates the need for an acetabular cup prosthesis, to some extent solving the problems of incorrect assembly of the acetabular cup and ceramic liner caused by existing technologies, as well as deformation during press-fitting of the metal acetabular cup, which leads to increased incidence of ceramic liner breakage and abnormal noise.

The utility model relates to the technical field of medical instruments, and discloses an artificial hip replacement surgery side position body position support which comprises a body position plate, an arc-shaped plate used for fixing is fixedly installed on one side of the body position plate, a fixing belt used for positioning is fixedly installed on one side of the arc-shaped plate, and a connecting plate used for fixing is fixedly installed on one side of the arc-shaped plate. A thigh supporting plate used for supporting is fixedly installed on one side of the connecting plate, and an elastic belt used for fixing is fixedly installed on one side of the thigh supporting plate. According to the artificial hip joint replacement surgery lateral position body position support, through cooperative arrangement of the connecting plate, the thigh supporting plate and the elastic belt, the body position plate and the thigh supporting plate can be fixedly connected through the connecting plate, meanwhile, the angle of the device can be adjusted according to needs so as to meet the use requirement, the thigh supporting plate can fixedly install the elastic belt, and the elastic belt is not prone to falling off. And the device has certain elasticity, so that the device is fixed more firmly, and the risk of an operation is reduced.

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 invention discloses a non-invasive positioning method for pelvis and lower limbs in hip replacement. The non-invasive positioning method comprises the following steps: 1, calibrating a flexible multi-array strain sensor at pelvis skin; 2, acquiring strain intensity information, attitude information and space information of the sensor; 3, standardizing the timestamps of the collected information; 4, setting a data acquisition time interval; 5, calculating a strain tensor change rate, a relative displacement change rate and an attitude difference angle; 6, the trend degree and the dispersion degree of the sum are obtained; 7, calculating a skin sliding index SI and a skin deformation index DI; 8, respectively setting an SI threshold value and a DI threshold value and comparing; 9, calculating the length variation between the nodes of the sensor array; 10, performing spatial position compensation according to the step 8; and 11, repeating the steps 2-10 to carry out space information compensation on the femur until positioning is stopped. According to the invention, the identification and compensation of the motion artifacts of the optical marker in the operation are realized, and the accuracy and stability of navigation in the operation are 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.

The present invention provides an apparatus for sensing the pressure on the body of a patient on an anterior hip table or a standard surgical table. The pressure monitoring post provides a warning indicator when the pressure exceeds a predetermined value that is related to pressure related injuries. The pressure monitoring post may also provide for a center and two lateral pressure sensors to detect the pressure resulting on a patient's body during various processes related to hip distraction for arthroscopy and arthroplasty procedures.

The invention relates to the technical field of medical apparatuses and instruments, and discloses an auxiliary device for artificial hip joint replacement, which comprises a limiting seat, a placement seat with a cavity structure is connected to the limiting seat, an inferior arc placement groove is formed in the placement seat, and a plurality of pressure sore prevention assemblies are mounted in the placement seat. An inflation and deflation mechanism is installed in the containing base and connected with a pressure sore prevention assembly, the pressure sore prevention assembly comprises an arc-shaped plate, a plurality of supporting air bags are fixedly connected to the arc-shaped plate at equal intervals, and the supporting air bags are arranged on the containing groove. According to the auxiliary device for artificial hip joint replacement, the contact area between the auxiliary device and the limbs of a patient can be increased through cooperation of the multiple expanded supporting air bags, so that bearing pressure increase caused by too small contact area is avoided, meanwhile, the two sets of supporting air bags alternately change, the contact part between the auxiliary device and the limbs of the patient can be changed, and the pressure sore prevention effect is further improved.