67 results about "Joint implant" patented technology

A sacroiliac (SI) joint implant assembly addresses SI joint dysfunction and degenerative sacroiliitis. The assembly includes a first implant body, a second implant body, and a piezoelectric layer positioned between them. The piezoelectric layer generates electrical charges when subjected to mechanical stress, stimulating bone growth and enhancing stability of the SI joint after surgery. The implant bodies may feature non-planar surfaces to distribute compressive and shear forces unevenly across the piezoelectric layer. The assembly can be secured using fasteners such as screws, pins, or brackets, and may include porous or fenestrated bodies made from materials like titanium or polymers. Some implant assemblies are designed for minimally invasive surgical procedures, with configurations that allow for precise placement using guide wires and imaging techniques. The assembly aims to stabilize the SI joint and promote bone fusion, leveraging the piezoelectric effect to improve the overall efficacy of the fusion procedure.

A method and system for guiding joint replacement procedures based on functional stability analysis of a joint. The method comprises communicatively connecting to a plurality of sensors worn by an individual at muscles in a joint area and performing an initial measurement that evaluates strength and activity level of the muscles. The initial measurement includes a recording of data values from the plurality of sensors during a preoperative testing procedure. The initial measurement is compared with reference data, wherein the reference data includes measurements of healthy people with normal muscle function. The method further comprises generating joint replacement recommendations based on the comparison.

The invention discloses an intelligent joint replacement revision operation system and method based on CBCT and optical navigation, and the system comprises an imaging device which is used for collecting the positive and lateral two-dimensional images of a femur region and an ankle joint region of an affected limb and the three-dimensional image of a knee joint region, and reconstructing the three-dimensional models of the femur and the tibia; the optical tracking equipment is used for acquiring poses of the first tracing equipment and the second tracing equipment in real time; the key point acquisition module is used for acquiring three-dimensional positions of a femoral head central point and an ankle joint central point in the positive and lateral two-dimensional image and acquiring femoral inner and outer upper condyle points and a tibia marrow cavity point in the three-dimensional model; the affected limb section extraction module is used for obtaining the far-end section, the anterior section and the posterior section of the femur in the knee joint area and the plateau section of the tibia in the knee joint area; and the planning execution module is used for determining the target pose of the new implant according to the corresponding section, and performing planning execution according to the target pose. According to the invention, the accuracy and safety of the joint replacement revision operation can be improved.

Systems and methods of determining ligament attachment areas with respect to the location of a rotational axis of a joint implant are disclosed. Certain embodiments provide a computer-implemented method of evaluating placement of a joint implant with respect to a joint. The method includes determining one or more ligament attachment regions of the joint. The method further includes determining one or more rotational axes of the joint implant. The method further includes determining a position of the joint implant relative to the joint. The method further includes determining whether the one or more rotational axes align with the one or more ligament attachment regions when the joint implant is at the position. The method further includes displaying to a user an indication of whether the one or more rotational axes align with the one or more ligament attachment regions when the joint implant is at the position.

Systems and methods to evaluate a joint implant device are provided. The joint implant device can include a prosthesis body having a first end and a second end. The first end can couple with a first joint component and the second end can couple with a second joint component. The prosthesis body can include a first support. The prosthesis body can include a first gear rotatably coupled with the first support. The prosthesis body can include a second support movably coupled with the first support. The second support can include a second gear that can engage with a portion of the first gear. The prosthesis body can include a third support. The third support can movably couple with the second support. The third support can move relative to the first support with activation of the first gear.

The embodiment of the invention provides a robot control method, a robot control device and a robot, which are applied to an application scene in which a robot needs to be in rigid contact with a target, such as fine surgical operations such as orthopedic joint replacement and dental implantation of a surgical robot. The control method comprises the steps of obtaining contact force data of the robot; filtering the contact force data according to the change rate of the contact force at the current moment so as to determine preprocessed contact force data; servo control parameters of the robot are determined according to the preprocessed contact force data, a self-adaptive admittance control model and a speed Weil method numerical integration algorithm; and controlling the robot to work according to the servo control parameters of the robot. In the filtering processing process of the contact force data, the filtering intensity can be dynamically adjusted according to the change rate of the contact force at the current moment, tool bounce or tremor is avoided when the robot makes contact with a rigid target, and the working stability, precision and safety of the robot are improved.

This invention discloses a self-assembled joint implant integrating hard and soft tissue and its forming method. The implant comprises two parts: a hard tissue structure and a soft tissue structure. The hard tissue structure includes a dense hard tissue structure and a porous, loose hard tissue structure with a bidirectional gradient porosity. The soft tissue structure includes a hard soft tissue structure and a soft soft tissue structure, with different ratios of hydroxyapatite and hydrogel. The contact surfaces of the hard and soft tissue structures have corresponding serrated structures, achieving stable assembly through a combination of interference fit and friction. Furthermore, the hard tissue undergoes surface modification and is combined with a binder to promote the stability of the hydrogel applied before and after assembly, improving the firmness of the soft-hard tissue bond. The overall structure and materials of this invention exhibit continuous gradient continuity, enabling a stable transition of properties at various interfaces and reducing instability, thereby promoting post-implantation recovery and preventing loosening.

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.

A system for confirming registration of a bone involved in a joint replacement procedure is provided. The system includes a three-dimensional (3-D) bone model of the bone registered to a bone location, a visible light camera, and a display. The visible light camera captures images of the bone in the camera's field-of-view (FOV). The display is configured to display the captured images of the FOV and an image of the 3-D bone model, where the displayed location of the image of the 3-D bone model corresponds to the location of the 3-D bone model registered to the bone location. The registration may be confirmed if the displayed location of the image of the bone as captured by the visible light camera corresponds to the displayed location of the 3-D bone model.

Prosthetic ankle replacements, prostheses, and associated methods of implanting prosthetic ankle and other joint replacements. In one form, a tibia stem has a geometry to facilitate implant installation while providing means to transfer load over a larger surface area through a press-fit, scratch-fit or cortical fit, thus lowering the contact stresses at the tibia-metal implant interface. The design and its implantation procedure also address minimization of misalignment. A talus element presents a partial-hemispherical surface; a tibial element which is to be affixed within the tibia, having an elongated stem part which extends into and within a canal of the tibial inner cortex, an intermediate body part which smoothly widens in radius toward an end which is a base to the tibial element, the base having a concavity formed therein shaped to match the partial-hemispherical surface of the talus element with a plastic cap between the two.

Disclosed herein are implants with sensors and methods for powering implants with sensors. A joint implant according to the present disclosure can include a first implant and a second implant in contact with the first implant. The first implant can be coupled to a first bone of a joint. The first implant can include an energy generator coupled to a transducer. The second implant can include at least one sensor, a battery coupled to the at least one sensor, and a receiver coupled to the battery. The receiver can be disposed within the second implant adjacent the transducer. Energy from the energy generator can be transmitted from the transducer of the first implant to the receiver of the second implant.

The present disclosure provides an implant, a corresponding method of implantation, and a method of using the same that can be used in orthopaedic joint replacement arthroplasty or hemiarthroplasty and / or an orthopaedic joint resurfacing arthroplasty or hemiarthroplasty. The implant can include a first fin portion and a second fin portion for receipt in a first slot and a second slot, respectively formed in bone, and the first fin portion and the second fin portion can support an articulation portion that can be used in resurfacing and replacing portions of articulation surfaces of a joint.

The utility model discloses a reverse shoulder joint prosthesis connecting piece which comprises a main installation assembly, a positioning assembly is arranged on one end face of the main installation assembly, a plurality of main fixing assemblies are arranged on the main installation assembly, and a connecting assembly is arranged on the end face, away from the positioning assembly, of the main installation assembly. And a shoulder glenoid ball head is arranged on the connecting assembly. The reverse shoulder joint prosthesis connecting piece has the advantages that the reverse shoulder joint prosthesis connecting piece is used for prosthesis replacement of the shoulder blade side in reverse shoulder joint replacement and treatment of rotator cuff injuries, the occurrence of shoulder blade lower incisura can be effectively prevented, and meanwhile different eccentric shafts can be selected when the reverse shoulder joint prosthesis connecting piece is matched with different patient conditions.

The present application relates to the technical field of pulverizer, and more particularly to a pulverizing equipment modular wear rack plate and a replacement method thereof, which comprises the following steps: acquiring the wear rate value, material hardness value, water content, body vibration amplitude value and original assembly gap value of each module wear rack plate in real time; judging whether there is a particle embedding risk based on the particle embedding risk coefficient; determining whether the embedded particles cause abnormal wear based on the material hardness value and the wear rack plate hardness; identifying whether there is local abnormal wear based on the wear rate mutation coefficient; deciding to execute a single module or group replacement strategy and generating an instruction based on the joint replacement urgency coefficient; calculating the replacement effect compliance coefficient after replacement to verify the replacement effect; and calculating the correction coefficient based on the effect compliance deviation to optimize the characteristic parameters in the replacement process. The present application solves the problems of damage of the split type wear rack plate caused by micro displacement due to particle embedding gap and accurate replacement of the wear rack plate.

The invention discloses a joint replacement full-stage self-adaptive Ag-DLC coating and a preparation method thereof, the coating comprises a bio-friendly substrate, a titanium bonding layer and an Ag-element-doped Ag-DLC functional layer, the Ag element in the functional layer is embedded in a DLC carbon skeleton in the form of Ag nanoparticles, the size of the Ag nanoparticles is 1-35 nm, and the doping amount is 2-40 at.%. According to the invention, the DLC coating with the nanocrystalline / amorphous composite structure characteristic is constructed by doping the Ag element with the anti-bond characteristic, so that the synergism of functions such as mechanical bearing, abrasion resistance, antibacterial property and biocompatibility can be realized. By means of controllable release of the Ag nanoparticles, self-adaptive response of functional characteristics of the metal joint implant in the whole service stage can be achieved, the requirements of the coating on the antibacterial performance and biocompatibility in the early postoperative stage can be met, and reliable anti-abrasion protection and osteogenesis promoting functions can be provided for the stable postoperative service stage.

The invention discloses a joint replacement bone cement uniform smearing device and a using method thereof, and belongs to the technical field of joint replacement. Comprising a drug delivery assembly, a coating assembly is arranged at the bottom of the drug delivery assembly, the drug delivery assembly comprises an injection tube, a communicating head is arranged at the bottom of the injection tube, the coating assembly comprises an exhaust cavity, a communicating port is formed in the top of the exhaust cavity and connected to the outer side of the communicating head in a clamped mode, and a communicating part is arranged at the bottom of the exhaust cavity. A doctor blade is fixedly installed at the bottom of the communicating part, the doctor blade is of a hollow structure, an administration groove is formed in one side of the lower end of the doctor blade, a uniform coating strip is fixedly installed at the bottom of the doctor blade, the doctor blade and the uniform coating strip are both made of medical silica gel, and the hardness of the doctor blade is larger than that of the uniform coating strip. A flow guide groove is transversely formed in the outer side of the uniform coating strip; according to the bone cement smearing device, bone cement can be conveniently and evenly smeared to the surface of a joint platform, bubbles mixed in the bone cement can be eliminated, and the high practical value is achieved.

A sacroiliac joint implant system includes a primary implant configured to be received in a sacroiliac joint of a patient and a secondary implant configured to couple with the primary implant. The primary implant includes a body extending from a proximal end to a distal end and a plurality of threads extending from the body. The secondary implant includes a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.

The invention relates to a tibial implant (2) for joint replacement, with a plateau section (4) on which a bearing area (8) for articulating condylar joint surfaces is provided on the tibial side and in particular a meniscus replacement part can be arranged, and with an anchor section (14) projecting on the tibial side (10) of the plateau section (4) and extending away from it in an axial direction (12), in particular with a keel or wing structure (16), which can be inserted into a channel prepared for this purpose in a tibial bone in the axial direction (12) and which has a peg-shaped end section (18) formed distal to the possible keel or wing structure (16);According to the invention, it is proposed that the cone-shaped end section (18) has at least one recess (24) extending transversely to the axial direction (12) from its surface (20), which forms an undercut in the axial direction (12) into which bone cement can penetrate transversely to the axial direction (12) when the anchor section (14) is inserted into the channel prepared for this purpose and filled with bone cement in the tibial bone.

The utility model discloses a shoulder glenoid side guide plate for reverse shoulder joint replacement, which is provided with an attaching surface attached to the surface of a glenoid and a shell surface for driving to rotate, the guide plate comprises a base body and at least three positioning blocks annularly arranged on the periphery of the base body, and the positioning blocks all convexly extend towards the attaching surface. The base body is provided with an attachment surface and a positioning block, the attachment surface is provided with an attachment area for accommodating a glenoid cavity, the positioning block is provided with a plurality of gear parts facing the attachment area, the glenoid cavity is limited in the attachment area by the plurality of gear parts, one side of the shell surface of the base body is provided with a positioning column extending outwards, and the positioning column penetrates through the attachment area and forms a first needle hole. According to the glenoid cavity reamer, the shell face is rotated so that the multiple gear parts can limit the glenoid cavity to the attaching area, then the position of the first needle hole can be determined, and the position and guiding of the glenoid cavity reamer can be determined in the mode that a surgical needle is beaten in the first needle hole.

The invention relates to the technical field of postoperative rehabilitation auxiliary equipment, and discloses an inverse shoulder joint replacement postoperative rehabilitation training device which comprises a mounting base used for providing basic support, and an adjusting plate is slidably mounted in the length direction of the top of the mounting base. The main rod is rotationally installed around the axis perpendicular to the top face of the adjusting plate and used for driving the upper limb of the patient to achieve shoulder joint abduction and anteflexion rotation, and the fixing component is detachably installed on the outer wall of the main rod in a clamped mode and used for stably fixing the upper limb of the patient. Supporting surfaces such as bed edges can be stably clamped; the adjusting plate can slide along the convex rail to adjust the transverse position, the rotating disc can freely rotate to adapt to different training directions, relative fixing is achieved through the limiting hole and the plug pin, the individual rehabilitation training requirements of different patients are met, and an accurate position basis is provided for the main rod to directly face the shoulder joint of the patient.

This invention discloses a joint replacement surgical robot system and control method based on digital twin technology. In the system, the operating table is fixed with a head fixation mechanism, a lumbar fixation mechanism, and a joint motion mechanism for fixing and adjusting the patient's limbs. The robotic arms of the dual-arm robot are equipped with a 3D imaging scanning device, a binocular vision navigation device, and surgical instruments. The main controller of the main carriage is communicatively connected to the joint motion mechanism, the 3D imaging scanning device, the binocular vision navigation device, the surgical instruments, and the dual-arm robot. Through the technical solution of this invention, the surgical process can be planned in real-time using digital twin technology, a digital model of the bone and joint can be established, and real-time synchronous dynamic analysis results can be provided as surgical guidance data. This eliminates the need for a guide plate positioning process, allowing the surgery to be completed in a very short time, greatly improving surgical efficiency and minimizing the trauma to the patient caused by fixation braces and guide plates in conventional surgery.

The invention provides a vacuum suction casting forming device and method for an artificial joint implant in order to overcome the defects of a traditional gravity casting forming process. The device comprises a smelting crucible, a flow guide pipe and other components, the vacuum suction casting principle is utilized, molten metal is rapidly and evenly filled, the yield is increased to 60% or above, waste of expensive materials is reduced, and the production efficiency is improved through the batched mold shell arrangement design. And through the design of flow guide pipe throttling control, ceramic-based sealing gasket sealing, the height difference between the part mold shell and the sleeve mold shell and the like, the filling uniformity and the forming quality integrity are ensured. The method comprises the steps of wax mold manufacturing, wax mold assembling, mold shell machining, negative pressure suction casting, part forming and the like, and high-quality forming is ensured by controlling parameters of all links. The production efficiency and the metal recovery rate are further improved through high-temperature roasting and preheating of the mold shell, the cylindrical tree assembling technology and the like.

An apparatus can include a metacarpal implant, a trapezium implant, and a spacer. The metacarpal implant can include a stem having a first end and a second end and centered on a first axis and an opening partially extending from the first end to the second end, a portion of the opening centered on the first axis. The trapezium implant can include an implant head portion having a top surface and a bottom surface, the implant head portion centered on a second axis parallel to and offset from the first axis and a first cavity insert extending from the bottom surface. The spacer can include a spacer head portion having a top surface and a bottom surface, the spacer head portion centered on the second axis and an opening insert to be inserted in the opening and extending from the bottom surface, the opening insert centered on the first axis.

The invention relates to a joint implant for keeping an opening clear in a joint bone, two devices for placing a joint implant, a system and a method for placing a joint implant. A joint implant (10) for keeping an opening (2) clear in a joint bone (5) comprises an elongate body (12) which extends along a longitudinal axis (15), and the body (12) defines a continuous channel (16) along the longitudinal axis (15). At least one anchoring element (20) for anchoring the joint implant (10) in the joint bone (5) is arranged on an outer side (14) of the body (12).

A joint implant can include a proximal joint implant element having a proximal curved interface surface with a plurality of proximal registration features. A distal joint implant element can be rotatably coupled to the proximal joint implant element, and can have a distal curved interface with a plurality of distal registration features that are complementary to the proximal registration features such that the registration features interface together to maintain registration between the proximal and distal joint implant elements. A joint implant element connector can include a proximal pin supporting the proximal joint implant element and a distal pin supporting the distal joint implant element. At least one of the curved interface surfaces can include a protrusion that prevents rotation of the joint implant elements when the protrusion contacts the opposite curved interface surface.

A bone joint implant (1) has a proximal part (120) for translational motion over the trapezium in a first carpometacarpal joint and a distal part (110) for intramedullary engagement in the first metacarpal bone. An articulating coupling (103, 121, 123) is for multi-axial motion with translational movement over a bone in one part (120) and rotation in the other part (110) about the articulating coupling (121, 103). A flange (105) extends radially and around the coupling to limit relative rotational motion of the proximal and distal parts about the coupling, and to provide resilience for contact between the proximal and distal parts. The flange has a contoured surface (101) matching an abutting surface (125) of the proximal part (122) upon articulation of the parts in use to extreme positions. The flange (105) is included in an insert (100) in a stem (111) of the distal part (110), the flange extending proximally of the stem (111) and prohibiting contact between the proximal part (120) and the stem (111) during articulation.

A system for confirming registration of a bone involved in a joint replacement procedure is provided. The system includes a three-dimensional (3-D) bone model of the bone registered to a bone location, a visible light camera, and a display. The visible light camera captures images of the bone in the camera's field-of-view (FOV). The display is configured to display the captured images of the FOV and an image of the 3-D bone model, where the displayed location of the image of the 3-D bone model corresponds to the location of the 3-D bone model registered to the bone location. The registration may be confirmed if the displayed location of the image of the bone as captured by the visible light camera corresponds to the displayed location of the 3-D bone model.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment and surgical planning, and provides a single-condylar movement platform surgical planning method and computer equipment, the method comprises the following steps: determining a plurality of to-be-planned prostheses, the prostheses comprise thighbone prostheses and tibia prostheses, and the thighbone prostheses are spherical prostheses; placing the thighbone prosthesis by taking a thighbone far end point in a pre-constructed thighbone three-dimensional model as a circle center, and adjusting the thighbone prosthesis to a thighbone target position; calculating a thighbone section coverage rate of the thighbone prosthesis at the thighbone target position; a target femoral prosthesis is determined from the multiple femoral prostheses according to the femoral section coverage rate; and determining a target tibial prosthesis from the plurality of tibial prostheses, and carrying out preoperative planning of a unicompartmental knee joint replacement operation based on the target tibial prosthesis and the target femoral prosthesis. By adopting the method, preoperative prosthesis planning can be carried out aiming at the unicompartmental knee joint operation of the movable platform.

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.