71 results about "Arthroplasty" patented technology

According to one example, a for revision knee arthroplasty is disclosed. According to this example, the method can include shaping a bone of a patient to create one or more recesses therein, selecting a stem provisional, disposing the stem provisional within the one or more recesses, and assembling in vivo the stem provisional with both a first provisional component configured to simulate a shape of one of a tibial tray implant or a femoral implant and a second provisional component configured to simulate a shape of at least one of a sleeve component, a cone component or a keel component of an implant.

A control method for an arthroplasty surgical robot includes: capturing a bone image, transmitting the image to a computer system, and acquiring image data of a bone; selecting a suitable prosthesis model and placing it on a diseased joint for matching, wherein the overlapping part between the model and the bone is the part that needs to be removed and replaced; mounting signal sources; capturing a bone image again, including the signal sources and the joint part; establishing a coordinate system using the signal sources as the origin, and calculating and memorizing an interface between the model and the bone overlapping part and the coordinates of the interface in the coordinate system; and receiving the coordinates by a surgical robot, and obtaining the positional coordinates by the surgical robot of a part of the diseased joint that needs to be removed, and performing a surgical operation by the surgical robot.

Disclosed herein are tracking element fixation elements for affixing computer-assisted surgical system (CASS) tracking elements to a patient. Fixation systems provide kinematic coupling or clamping functionality that allows tracking elements (attached to a tracker arm) to be repeatedly and accurately detached and re-attached to facilitate removal when necessary, such as for point probe data collection, during impaction, bone movement, and / or the like. Fixation systems may include a baseplate and a tracker arm configured to be kinematically coupled to the baseplate via a magnet associated with independent ball bearings or contacts extending from a bottom surface of the magnet. The ball bearings or contacts are configured to be received within corresponding grooves of the baseplate. The baseplate may include one or more protrusions extending from a bottom of the baseplate that are configured to be impacted into the cortical bone of the patient.

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 utility model relates to a thighbone side guide plate based on two-point bridging type knee joint unicompartmental knee arthroplasty, which comprises a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, modeling is carried out through knee joint CT data before an operation, and two cartilage-free bone surfaces around a thighbone operation area are set as supporting points, so that the thighbone side guide plate can be used for knee joint unicompartmental knee arthroplasty. A 3D printing technology is used for printing a guide plate used for thighbone side and tibia side positioning and osteotomy, the guide plate is provided with a first auxiliary plate, a second auxiliary plate and a third auxiliary plate, the second auxiliary plate and the third auxiliary plate can be directly attached to the bone surface of cartilage-free tissue, the position of the first auxiliary plate above an operation area is achieved through two-point positioning, and the position of the second auxiliary plate above the operation area is achieved through two-point positioning. The first auxiliary plate does not need to be attached to the bone surface of the operation area, that is, the first auxiliary plate is not affected by cartilage tissue above the operation area, the precision error caused by the cartilage tissue of the osteotomy area is avoided, an operator can be guided more rapidly and accurately to conduct positioning and osteotomy in the operation, and the operation time and process are shortened.

A bone implant may include a shaft having a proximal end, a distal end, a longitudinal axis, a proximal shaft portion, and a distal shaft portion. The proximal shaft portion may include a first minor diameter, and a first helical thread disposed about the proximal shaft portion defining a first major diameter. The first helical thread may include a first concave undercut surface. The distal shaft portion may include a second minor diameter, and a second helical thread disposed about the distal shaft portion defining a second major diameter. The second helical thread may include a second concave undercut surface. The first and second concave undercut surfaces may be angled towards the distal end of the shaft. The second minor diameter may be smaller than the first minor diameter and the second major diameter may be smaller than the first major diameter.

A method is provided for performing a quadruped unicompartmental stifle arthroplasty. The method includes cutting a plateau of a tibia to form first cut surfaces. The method also includes cutting a medial condyle of a femur to form second cut surfaces. The method also includes aligning openings in a first trial device with the first cut surfaces and forming first holes in the first cut surfaces by passing a drill through the openings in the first trial device. The method also includes aligning openings in a second trial device with the second cut surfaces and forming second holes in the second cut surfaces by passing a drill through the openings in the second trial device. The method also includes mounting a first implant device to the first cut surfaces and mounting a second implant device to the second cut surfaces. A system is also provided for performing the method.

Systems, methods and apparatuses including an insert having a body with a plurality of bladders therein, a proximal surface and a distal surface. Two or more of the plurality of bladders are in fluid communication with one another. The plurality of bladders are expandable and contractible in volume. The proximal surface shapable by a change in the volume of one or more of the plurality of bladders. The proximal surface is configured to interface with a first arthroplasty implant of the patient. The distal surface is spaced from the proximal surface by the body and is configured to interface with a second arthroplasty implant of the patient.

The application provides a sterile protection device for an arthroplasty osteotomy process, which comprises a bending rod, both ends of the bending rod are fixedly connected with receiving bending plates, a single receiving bending plate is fixedly connected with a ring-shaped support, a protection assembly is arranged on the ring-shaped support, a switching device is arranged on the receiving bending plate, and the arc-shaped inner side of the receiving bending plate is fixedly connected with a rectangular air bag; the protection assembly comprises electric push rods which are installed on the ring-shaped supports, the number of the electric push rods is four, and two electric push rods are arranged on a single ring-shaped support in a group. The protection assembly can be constructed into different protection modes above the protection assembly, and can better protect personnel in the operation and after the operation.

An implant type or a process of implant fixation is automatically identified by processing surgical plan information. Further, bone mineral density information associated with a patient is determined by processing at least one image. The determined bone mineral density information and patient information representing at least demographics associated with the patient are processed, and a selection of a plurality of patients that previously underwent arthroplasty is made. Outcome information representing results of arthroplasty procedures is processed and a threshold is established representing a biomechanical tolerance. The bone mineral density information is processed to be determined associated with the patient is determined to be above or below the threshold.

An implant type or a process of implant fixation is automatically identified by processing surgical plan information. Further, bone mineral density information associated with a patient is determined by processing at least one image. The determined bone mineral density information and patient information representing at least demographics associated with the patient are processed, and a selection of a plurality of patients that previously underwent arthroplasty is made. Outcome information representing results of arthroplasty procedures is processed and a threshold is established representing a biomechanical tolerance. The bone mineral density information is processed to be determined associated with the patient is determined to be above or below the threshold.

The invention discloses a multifunctional rehabilitation brace used after a joint operation. The multifunctional rehabilitation brace comprises a first shell, a second shell, a protective shell and two symmetrically-arranged connecting assemblies. The two sides of the outer wall of the first shell are each fixedly provided with a first inner sliding groove, and the first inner sliding grooves are opened downwards. The upper end of each connecting assembly is arranged in the corresponding first inner sliding groove in a sliding mode and is fixedly connected with the corresponding first inner sliding groove through a connecting fastener after being adjusted to a proper position. The two sides of the outer wall of the second shell are each fixedly provided with a second inner sliding groove, and the second inner sliding grooves are opened upwards. The lower end of each connecting assembly is arranged in the corresponding second inner sliding groove in a sliding mode and is fixedly connected with the corresponding second inner sliding groove through a connecting fastener after being adjusted to the proper position. The two sides of the protective shell are connected with the middle positions of the two connecting assemblies correspondingly. The height can be effectively adjusted, soft tissue is prevented from being pressed, and secondary damage to knee joints during falling is avoided.

Disclosed herein are systems and methods for planning a knee arthroplasty procedure. In one example, a surgical method includes intraoperative measurement of patient anatomical information of the knee and / or movement of the knee of a patient resulting from electrical stimulation of nerves or muscles to cause articulation of the knee. An electrical stimulation system may be attached to a patient to cause contraction / relaxing of muscles operative to cause articulation of the knee. Tracking elements may be associated with relevant knee anatomical structures, such as the proximal tibia, the distal femur, and / or the patella to track the movement of the knee components resulting from the electrical stimulation. Implant components may be selected, positioned, and / or orientated using the tracking information resulting from the electrical stimulation, thereby allowing for determination of a surgical plan based on intraoperative muscle-activated knee articulation, configured to emulate natural patient anatomy and kinematics.

1. The name of the design product: knee joint surgery gasket. 2. The use of the design product: gasket used in total knee arthroplasty; used for measuring knee joint pressure and changes and intraoperative soft tissue balance adjustment operation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: assembly 1 perspective view 1. 5. Other components that need to be explained: component 1 is a knee joint surgery measurement gasket; component 2 is a knee joint surgery adjustment gasket.

A knee arthroplasty instrument may include a tensioning instrument and at least a first sensor. The tensioning instrument can optionally include a tibial component configured to engage the tibia and a femoral component configured to engage the femur. The femoral component can be movably coupled to the tibial component to place the knee joint in tension by separating the tibia and the femur. The first sensor can be coupled to the tensioning instrument and can be configured to collect first data regarding a torque of the tensioning instrument when separating the tibia and the femur.

1. The name of the design product: conical grinding drill. 2. The use of the design product: conical grinding drill for micro-incision unicompartmental arthroplasty. 3. The design features of the design product: in shape. 4. The picture or photo that best indicates the design features: perspective view 1.

The subtalar joint prosthesis comprises a talus assembly, a gasket and a calcaneus assembly, and the talus assembly and the calcaneus assembly are connected through the gasket to form a joint structure; by means of the split structure of the talus assembly, the gasket and the calcaneus assembly, all the assemblies are detachably clamped, step-by-step implantation and assembly in the operation process are facilitated, and therefore the adaptability of the prosthesis under different anatomical conditions is improved. The gasket is arranged between the talus assembly and the calcaneus assembly, a relative motion interface is formed between the talus assembly and the calcaneus assembly, the gasket is made of the low-friction material, direct friction between metal assemblies can be effectively reduced, abrasion is reduced, and the joint movement performance is improved. By means of the structural design, dependence of prosthesis implantation on accurate matching of bone surfaces is reduced, surgical operation is simplified, and meanwhile a feasible solution is provided for rebuilding after joint fusion operation.

A prosthetic system is disclosed for providing motion between a first bone and a second bone of a joint. The system can comprise a support structure (e.g., sleeve or a cone) having a first end surface, a second end surface, an exterior surface extending from the first end surface to the second end surface, and an inner surface defining a passageway extending from the first end surface to the second end surface, wherein the exterior surface of the support structure is configured to be received in a cavity of the first bone such that the first end surface is flush with or beneath a surface of the first bone. The first end surface is within an axial plane defined by the first end surface and an outermost edge of the first end surface, and a longitudinal axis of the passageway of the support structure is offset with respect to a geometric center point of the axial plane.

A computer-implemented method for creating an activity-optimized cutting guides for surgical procedures includes receiving one or more pre-operative images depicting one or more anatomical joints of a patient, and creating a three-dimensional anatomical model of the one or more anatomical joints based on the one or more pre-operative images. One or more patient-specific anatomical measurements are determined based on the three-dimensional anatomical model. A statistical model of joint performance is applied to the patient-specific anatomical measurements to identify one or more cut angles for performing a surgical procedure. A patient-specific cutting guide is created that comprises one or more apertures positioned based on the one or more cut angles.

Disclosed are devices, systems and methods for inserts for sacroiliac joint arthroplasty, which can include the employment of a longitudinal bone screw and associated threaded cylindrical sleeve, received on a proximal end of the bone screw, with a collet, nut or other securement feature holding the sleeve onto the screw. The sleeve can selectively articulate and / or be immobilized relative to the bone screw, with the system allowing for, at a surgeon's option, motion preservation between bone surfaces in some surgical applications while being utilized as an immobilizing and / or fusion construct between bone surfaces during other surgical applications.

The present invention is entitled "Prosthetic implants including frames for fixation to bone and related methods." The present disclosure provides prosthetic implants to be used in various surgical repairs including procedures such as total shoulder arthroplasty and reverse total shoulder arthroplasty. The implants include two main parts: a frame and a prosthetic component. The frame includes an aperture configured to receive the prosthetic component, allowing the prosthetic component to be in direct contact with bone at the surgical site. Various configurations are provided that allow the prosthetic component to be coupled to or otherwise engaged with the frame, and at least some of the configurations enable reverse procedures to be performed without having to completely rework and / or modify the bone. A variety of procedures resulting from the improved implants are also provided.

A method of manufacturing an individual femoral knee arthroplasty component (1) for being implanted into a patient. The component (1) comprises a prosthetic trochlear groove. The method comprising the step of obtaining the orientation of a projection of the patient's individual spherical axis (17) onto a coronal reference plane that is at a dihedral angle of less than 25° relative to a spherical plane. The method further comprises the step of manufacturing the individual femoral knee arthroplasty component (1) such that if implanted as intended, the component's (1) prosthetic trochlea axis in the coronal reference plane is in valgus of the orientation of the projection of the patient's individual spherical axis (17) onto the coronal reference plane. The individual femoral knee arthroplasty component (1) is implanted in kinematic alignment.

Implants, systems, instruments, methods, and kits for metatarsophalangeal joint arthroplasty may include metatarsal arthroplasty implants, repositioning guides, broach tools, inserter tools, and sterilizable packaging configured to facilitate metatarsal arthroplasty surgical procedures. The metatarsal arthroplasty implants may generally include an articular member having a convex articular surface, a concave bone-facing surface opposite the convex articular surface, and at least one side surface intermediate the convex articular surface and the concave bone-facing surface, as well as a central shaft sized for insertion into a metatarsal bone having a central shaft longitudinal axis, a central shaft proximal end coupled to the concave bone-facing surface of the articular member, and a central shaft distal end extending away from the concave bone-facing surface of the articular member along the central shaft longitudinal axis.

Arthroplasty implant apparatus 10 comprises an implant body 14 having a bearing surface (44 Fig. 2), and an implant stem 12 having first and second body elements 20a, 20b and a hinge element 20c. The

The utility model discloses a pair of cypripedium joint reduction forceps, which belongs to the technical field of medical instruments, and comprises a pair of cypripedium joint reduction forceps for clinical cypripedium joint reduction treatment, the cypripedium joint reduction forceps comprises a main handle, an auxiliary handle, a main pull rod, an auxiliary pull rod, a main forceps rod, an auxiliary forceps rod, a main forceps and an auxiliary forceps, the main clamp and the auxiliary clamp are oppositely arranged and are both in an oval shape. The device provides a better visual field for an operation by pulling or adjusting the positions of the ring-cypetoid joint and the surrounding tissues thereof, so that a surgeon can more clearly observe a diseased region and accurately perform the operation, the damage to the surrounding normal tissues is reduced, and the device is simple to use, easy to operate, safe, reliable and high in practicability. During operation, gauze or cotton pieces can be prevented from falling off or being left in the oral cavity, the phenomenon that the forceps ends are too sharp, mucous membranes are damaged or dislocated of the cypripedium joint is aggravated is avoided, the comfortable experience of a patient can be improved, and the psychological burden of an operator is relieved.

Disclosed are devices, systems and methods for inserts for sacroiliac joint arthroplasty, which can include the employment of a longitudinal bone screw and associated threaded cylindrical sleeve, received on a proximal end of the bone screw, with a collet, nut or other securement feature holding the sleeve onto the screw. The sleeve can selectively articulate and / or be immobilized relative to the bone screw, with the system allowing for, at a surgeon's option, motion preservation between bone surfaces in some surgical applications while being utilized as an immobilizing and / or fusion construct between bone surfaces during other surgical applications.

A method of evaluating a human knee joint includes: inserting a tensioner-balancer; moving the knee joint to one or more positions within its range of motion; using the tensioner-balancer to maintain a predetermined distraction load range or a predetermined distraction height range, and collecting distraction height data and distraction force data of the femur relative to the tibia; deriving ligament displacement data and load data; processing the collected data to produce a digital geometric model of the knee joint, wherein the model includes a ligament force versus displacement characterization curve for each of a plurality of flexion angles; using a software application, evaluating the digital geometric model of the knee in comparison to patient population data; using the software application, selecting a portion of the characterization curve that represents an optimized level of ligament tautness, based on the evaluation; and storing the digital geometric model for further use.

Disclosed herein is a system and method for performing pre-operative planning of total joint arthroplasty. The planning tool builds a model and analyzes and visualizes movement of the joint for various selections of implant models and placement of the components on the implants on the patient's anatomy. The tool also analyzes and visualizes motions of the joint during common activities of daily living and analyzes and visualizes changes in muscles.

The invention discloses a positioning method, system and tool used in movable plateau unicompartmental knee arthroplasty, and the method comprises the following steps: when a patient is in a lithotomy position, vertically and upwards extending the inward 1 / 3 position of a tibial tuberosity of the patient to the upper edge of patella and then extending to the body surface connecting line of anterior superior spine of iliac, and determining the ilioshin line of the patient; determining the inner side edge of the vertex of the tibial spine on the inner side of the patient as an osteotomy starting point; determining that the saw blade direction of osteotomy is parallel to the ilioshin line; the installation position of the thighbone drilling guider is located at the position with the distance of 5.25-7.25 mm from the vertical osteotomy face of the tibia through a quantification method; the rotating position of the femoral prosthesis is limited through geometric constraint, so that the connecting line of the center points of the two preset fixing nails on the femoral prosthesis is perpendicular to the tibia osteotomy surface. Good tibia prosthesis rotation is obtained by accurately guiding tibia vertical osteotomy through the body surface iliotibia line, good liner inner and outer side positions are obtained by quantifying the distance between the thighbone drilling guider and the tibia vertical osteotomy surface, and a good liner movement track can be provided.