12 results about "Prosthetic joint" patented technology

The invention provides a temporomandibular artificial joint replacement device, a preparation method and a surgical robot system.The temporomandibular artificial joint replacement device is characterized in that a mandibular fixing support is fixedly connected with the outer side face of the mandible of the human body, a temporal bone fixing support is fixedly connected with the outer side face of the temporal bone of the human body, a containing cavity is formed in a glenoid fossa liner, and a spherical joint head is movably arranged in the containing cavity; a base layer, a variable-rigidity elastic buffer layer and a surface layer are sequentially arranged on the inner wall of the containing cavity in the thickness direction of the side wall of the glenoid fossa liner. By means of the temporal-mandibular artificial joint replacement device, efficient simulation of the temporal-mandibular joint replacement device on a real human body temporal-mandibular joint structure can be achieved, the structural strength and the use comfort of the temporal-mandibular artificial joint replacement device are improved, and based on artificial intelligence and a surgical robot auxiliary technology, the device is simple in structure and convenient to use. The preparation function of the temporomandibular artificial joint replacement device matched with the human tissue structure and the automatic assembly surgical operation are achieved.

Disclosed is a prosthetic joint assembly for joining a humerus bone to a scapula bone, comprising a humeral component adapted for engagement with said humerus bone and a concave dish; a scapular component adapted for engagement with said scapula bone and a convex surface adapted to engage said concave dish; wherein when said components are implanted and engaged in a rest position said prosthetic center of rotation is displaced in a direction that is inferior and medial relative to a natural center of rotation and said humerus bone is displaced in a direction that is inferior relative to said natural center of rotation.

A rotatable and detachable wrist joint for a prosthetic hand is provided. The prosthetic joint includes a first ball race portion and a second ball race portion, and by moving the first ball race portion and the second ball race portion together or apart, the ball bearing is constrained in the inner zone or the outer zone, and the prosthetic joint can be fixed to or detached from the socket joint. The socket joint includes a socket body that houses the wrist joint. The wrist joint has a rotating connector core extending from the socket body and configured to follow the socket body.

An actuation assembly for a prosthetic device may include an output arm, a motor, and a drive unit. The drive unit may include an input coupled to the motor, an output coupled to the output arm, and a drive transmission. The drive transmission may be configured to transmit rotation of the input to the output. The motor and the drive unit may be axially aligned.

The present application relates to the application of circPDE5A inhibitor in the preparation of drugs for treating aseptic loosening of artificial joints. The present application confirms that circPDE5A has a positive correlation with the occurrence of aseptic loosening. And through RNA Pull-Down experiment and mass spectrometry (MS) analysis, it is confirmed that circPDE5A can affect the regulation of LACC1 signal pathway by interacting with LACC1, and then affect the inflammatory response of macrophages. In addition, through in vivo animal experiments, the results of mouse skull osteolysis model show that the injection of lentivirus for knocking down circPDE5A can reduce the osteolysis induced by Ti particles. In general, the present application provides a new idea and theoretical basis for the research and development of drugs for treating aseptic loosening of artificial joints, and has important clinical value and social significance.

This application belongs to the field of liquid damper technology, and particularly relates to a regulating valve, a damper including the regulating valve, and the application of the damper in a prosthetic joint. The regulating valve includes a steel ball, a valve seat unit with a threaded hole for insertion into the valve body groove of the connecting end cap, a one-way valve core unit inserted into the valve seat unit with the threaded hole and containing the steel ball, which together with the oil hole of the end cap forms a throttling orifice, an adjustable valve stem unit screwed onto the valve seat unit with the threaded hole and abutting against the one-way valve core unit, which reduces the size of the throttling orifice by pushing the one-way valve core unit closer to the one-way valve core unit and the oil hole of the end cap, and at least three sealing rings respectively disposed between the valve seat unit with the threaded hole and the valve body groove of the end cap, between the one-way valve core unit and the valve seat unit with the threaded hole, and between the adjustable valve stem unit and the valve seat unit with the threaded hole.

This application discloses a prosthetic joint connection device and a prosthesis. The prosthetic joint connection device includes a base, one end of which has an open connection cavity with a through hole radially provided in the cavity wall; a rotating seat is sleeved on the outside of the base and can rotate relative to the base; one end of a connector can enter the connection cavity through the open end of the connection cavity, and the connector has a locking part; a locking member is provided between the base and the rotating seat, and the locking member has a mating part. The mating part can extend into the connection cavity through the through hole and engage with the locking part under the rotation drive of the rotating seat, or exit the connection cavity to release the engagement with the locking part. This application adopts a mating form in which the mating part and the locking part engage with each other, which can effectively avoid the problems of stress concentration, wear and loosening in traditional connection structures, improve the load-bearing safety and stability of the connection structure, simplify the disassembly and assembly process, avoid jamming and sticking, and balance connection reliability and disassembly and assembly convenience.

An end to end process is disclosed that includes an installation of a prosthetic component, a prosthetic joint, or repair a musculoskeletal system. The pathway of care comprises a pre-operative pathway of care, an intra-operative pathway of care, and a post-operative pathway of care. An application downloaded to a computer drives the process. The application can include integrated PROMS, pain scores, patient Q&A, surveys, a calendar of events (such as physical therapy visits), and contact to surgeon, doctor, or healthcare provider. The pathway of care is an end to end process utilizing wearable devices, implantable devices, sensorized equipment, and sensorized tools to generate measurement data that supports a pre-operative plan, surgery, and post-operative rehabilitation. The application couples to the devices disclosed herein above to engage the patient one or more tasks such that sensors on the devices generate measurement data. The process provides better patient care while allowing the surgeon, doctor, or healthcare provider to handle more patients.

Prosthetic joints, such as ankle-foot prostheses, are disclosed. The retractable links of the prosthetic device can be elongated or shortened to effect flexion and extension. The retractable link may include a hydraulic cylinder configured to provide a buckling damping resistance and a stretching damping resistance. The telescopic link may further include a spring disposed in parallel with the hydraulic cylinder. The spring biases rotation of the joint. The spring may be a gas spring. The spring may be located within a piston assembly of the hydraulic cylinder and act directly on hydraulic fluid. In terms of the ankle-foot prosthesis, the spring may be configured to overcome hydraulic resistance to dorsiflexion rotation.

Powered joints (e.g., knee, ankle, etc.) can modulate the impedance / position controller based on the thigh velocity. The higher the thigh velocity is, the more assistance received by the user receives; and the lower the thigh velocity is, the higher the resistance received by the user. Additionally or alternatively, the impedance / position controller may enter a thigh tracking control mode in response to the thigh angle exceeding a threshold.

A powered prosthesis includes a high-level activity classifier to detect transitions among a plurality of distinct user activities and switch prosthetic joint control to an associated activity controller. The activity classification is reduced to four states with easily distinguishable features to control transitions among more than four activities by not separately classifying upward and downward incline walking or stand-to-sit transitions. The prosthesis has an inter-leg transition accuracy over 99% under both self-paced and rapid-paced fatiguing conditions with a 100% recovery rate due to backup logic or user-cued resets.

A prosthetic system with a prosthesis, which has two prosthetic parts that are pivotally connected together about a joint axis via a prosthetic joint with a joint upper part and with a joint lower part, and a cover element, which at least partly covers a gap between the two prosthetic parts or between one prosthetic part and the joint lower part. The cover element is pivotally mounted about a pivot axis on one prosthetic part, a component of a cosmetic prosthetic element, said component being secured to one prosthetic part or one joint part or the prosthetic joint and is coupled to the joint upper part of the prosthetic joint via at least one coupling element in a form- and / or force-fitting manner such that a pivotal movement of the prosthetic parts about the joint axis leads to a simultaneous pivotal movement of the cover element about the pivot axis.