267results about "Artificial legs" patented technology

Disclosed are prosthetic systems comprising a powered knee prosthesis and a volitional controller configured to provide control of the prosthesis to the user. The prosthetic system may be configured to enable a user to walk on smooth and / or uneven terrain and to ascend and / or descend stairs. The volitional controller may be configured in a contact state when the prosthesis is in contact with a ground surface and a no contact state when the prosthesis is lifted from the ground surface. When in the contact state, the controller may output a knee torque signal for controlling the powered knee of the prosthesis. The knee torque signal may be based on a target knee torque determined by the knee orientation and the torque measured at the ankle of a prosthetic foot. When in the no contact state, the controller may output a knee torque signal based on a desired knee position.

Methods, systems, and / or apparatuses are provided for providing multi-joint assistance for and / or resistance against leg movement of a user. The assistance may be provided to a paretic leg or a prosthetic leg of the user. Kinematic data associated with the paretic or prosthetic leg of the user may be received. The data may include one or more of velocity data, position data, orientation data, or acceleration data for differing portions of the paretic or prosthetic leg. A current phase of a gait motion for the paretic or prosthetic leg may be determined based on the kinematic data. One or more of electrical stimuli or motorized assistance or resistance may be provided to the paretic leg, prosthetic leg, or the remaining portion of the amputated leg based on the current phase of the gait motion of the paretic or prosthetic leg.

Disclosed are prosthetic systems comprising a powered knee upper leg prosthesis and a volitional controller configured to provide control of the prosthesis to the user. The prosthetic system may be configured to enable a user to climb a set of stairs. The prosthetic system may be activated by the activation of an EMG signal source, such as the biceps femoris muscle of the upper leg. The volitional controller of the prosthetic system may be further configured to receive a ground state signal and / or an IMU signal to determine a target knee torque for operating the powered knee of the prosthesis.

The current document is directed to improved mechanical joints that each includes a compact, bypassable, single-spring or nested-spring wrap-spring clutch ("BSorN WS clutch") and that can be incorporated into many different types of devices, appliances, and systems, including prosthetics. One application of a BSorNWS-clutch mechanical joint is as a mechanical knee within a prosthetic leg. A BSorNWS-clutch mechanical-knee component used in a prosthetic leg further includes upper-leg and lower-leg attachments that freely rotate when the prosthetic leg is unweighted butthat are constrained, by weighting-induced activation of the BSorNWS-clutch. to rotate only in a lower-leg-extension direction. The BSorNWS- clutch mechanical-knee includes additional components that adjust the weighting force needed to bypass the BSorNWS clutch and to slightly relax the rotational constraint imposed by BSorNWS-clutch activation.

A prosthetic foot includes a base spring, a top spring assembly, a connector assembly, and a heel cushion. The top spring assembly includes first and second spring members, and first and second bond connections. The second spring member extends parallel with and spaced apart from the first spring member. The first bond connection is between distal ends of the first and second spring members, and the second bond connection is between a distal end of the second spring member and a top surface of the base spring. The top spring assembly has a first portion arranged horizontally, and a second portion arranged vertically. The connector is connected to a proximal end of the top spring assembly to connect the prosthetic foot to a lower limb prosthesis. The heel cushion is mounted to the base spring at a location spaced forward of a heel end of the base spring.

The invention relates to a method for creating manufacturing data for the production of an orthopaedic device, which can be manufactured using the created manufacturing data in an automated manufacturing process, wherein the method comprises the following steps: - providing a digital 3D body part model of a body part in a data processing system, - providing at least one digital functional component model of an orthopaedic functional component in the data processing system, which can be integrated into an orthopaedic device, wherein the digital functional component model contains corresponding component properties of the respective orthopaedic functional component,- Generating at least one digital component interface using the data processing system, depending on at least one component property of at least one selected digital functional component model of an orthopaedic functional component to be integrated into the orthopaedic device, wherein the digital component interface has a receptacle for arranging the at least one selected orthopaedic functional component; - Automatically creating a digital orthopaedic model of the orthopaedic device to be manufactured based on the 3D body part model and the digital component interface for integrating the orthopaedic functional component using the data processing system; and - Generating the digital manufacturing data from the created digital orthopaedic model using the data processing system.

The invention discloses an active pneumatic buffering ankle joint artificial limb system and a control method thereof. The system comprises a sensing module, a control module and a pneumatic execution module. The pneumatic execution module adopts a closed loop composed of a miniature diaphragm air pump, an air storage tank and a damping air bag, and pre-storage and quick release of high-pressure air are achieved through the air storage tank. The control method is based on multi-sensor data fusion, high-strength impact can be pre-judged before the heel touches the ground, and the rigidity of the damping air bag can be adjusted in advance. The problems that a traditional artificial limb buffering system is lagged in response and fixed in parameter and an active motor system is high in energy consumption are solved, low-power-consumption, fast-response and self-adaptive intelligent buffering is achieved, and the walking comfort and safety of an amputee are remarkably improved.

The application discloses a single-shaft active and passive mixed driving intelligent artificial knee joint structure with energy recovery function, which comprises a joint rotating module, a gear transmission module, a hydraulic damping module, a rack and a motor. The gear transmission module comprises a primary bevel gear transmission system, a secondary gear transmission system, a synchronous belt wheel transmission assembly and a transmission rack. The motor is fixed on the transmission rack. In the active stage, the motor provides an active driving torque for the knee joint through the gear transmission module and the joint rotating module. In the passive stage, the joint rotating module transmits a passive torque of the knee joint to the motor through the gear transmission module, drives the motor to rotate, so that the motor generates electricity to recover energy, and the hydraulic damping module provides a damping torque to ensure the stability of the knee joint. In various use occasions, the required damping or driving torque can be obtained, the power consumption of the motor can be reduced by recovering the passive torque of the knee joint in the passive stage, and the working endurance of the intelligent artificial limb is improved.

A prosthetic or orthotic device (100) is described for implementation of a locomotion activity. The prosthetic or orthotic device (100) may cause an actuator (228) to perform a provide a first torque. Based on the first torque and one or more values of one or more parameters, the prosthetic or orthotic device (100) may perform a first portion of a flexion action. Subsequent to or during performance of the first portion of the flexion action, the prosthetic or orthotic device (100) may determine an angle associated with the prosthetic or orthotic device (100). Based on the angle, the prosthetic or orthotic device (100) may perform an adjustment of the one or more parameters. Based on the adjustment, the prosthetic or orthotic device (100) may perform a second portion of the flexion action. For example, the prosthetic or orthotic device (100) may perform the second portion while gradually increasing the one or more values.

A prosthetic attachment system (10) and corresponding lock assembly (12) are provided for connecting a distal end of a prosthetic liner (18) to a distal end of a prosthetic socket (16), by combining vacuum suspension and mechanical suspension. An attachment pin (20) extends from a distal end of the prosthetic liner (18). A connector assembly (21) secures to a distal end of the prosthetic socket (16) and is adapted for receiving and locking to the attachment pin (20). A lanyard assembly (15) has a first end secured to the connector assembly (21) and a second end extending outwardly from the distal end of the prosthetic socket (16) and adapted to secure to an exterior surface (E) of the prosthetic socket (16) by an external securing system (14).

A method for self-development of a control agent for a prosthesis, orthosis, or artificial limb, said control agent configured for being used by a control means thereof in its controlling, comprising the steps of: obtaining a motion model defining mechanical relationships between elements of the prosthesis, etc.; obtaining a training response model defining a predefined motion response of the prosthesis, etc.; determining a current motion state of the prosthesis, etc. And additionally comprising the steps of, repeatedly: determining a candidate mechanical action based on the current motion state related to the elements of the prosthesis, etc.; outputting a next candidate motion state based on the current motion state and the candidate mechanical action; outputting a next predefined motion state based on the current motion state; obtaining a reward value based on the next candidate motion state and the next predefined motion state; setting as current the next candidate motion state.

A surgical system comprises a table configured to support a patient and a first articulated arm configured to support a first surgical instrument. The surgical system is configured to determine a first planned motion for the table, the first planned motion for the table to be performed while the patient is supported by the table and the first articulated arm is docked with the patient. The surgical system is also configured to determine, based on the first planned motion for the table, a second planned motion for the first articulated arm that permits the first articulated arm to remain docked with the patient. The surgical system is also configured to perform the second planned motion for the first articulated arm.

The application relates to a compact active artificial knee joint with a torque adjusting device, which comprises a knee joint module, a receiving cavity connecting block, a lower leg connecting piece and a torque adjusting device, wherein the torque adjusting device comprises a spiral spring, a bent spring groove and the like, the knee joint module comprises a knee joint shell, a knee joint shaft center, a knee joint stator sleeve end cover and the like, one end of the spring is fixed at the upper receiving cavity connecting lug through an opening on the motor stator sleeve end cover, and the other end is fixed in the bent spring groove at the position of the motor stator sleeve end cover and the knee joint shaft center. The torque adjusting device can realize torque assistance and adjustment according to the angle size and direction of the limb rotation; meanwhile, the driving peak torque of the motor can be reduced, the size and the maximum torque of the driving motor are smaller due to the fact that the artificial limb needs to be easily worn, energy consumption and space are saved.

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 utility model discloses a kind of prosthetic knee joint shell and artificial limb, shell has the accommodation cavity for installing knee joint component, the cavity wall of accommodation cavity is equipped with weight reduction structure, weight reduction structure includes at least one recess provided in the cavity wall of accommodation cavity;And / or, at least one hollow hole through the inner surface and outer surface of the cavity wall of accommodation cavity.This application utilizes space structure optimization to replace the traditional material accumulation mode, recess realizes weight reduction by reducing the volume of local material of cavity wall, hollow hole further reduces weight by forming hollow structure through the cavity wall, the combination of both effectively reduces the overall weight of shell under the premise of ensuring that the accommodation cavity can normally install knee joint component.Meanwhile, the reasonable layout of recess and hollow hole can disperse stress concentration area, avoid the strength decline due to weight reduction, ensure that shell has good structural strength, provide reliable protection for internal components.In addition, due to the reduction of material usage, production manufacturing cost is reduced.

A medical walker apparatus and a method for using the medical walker. Embodiments of the medical walker include a wheeled frame and a compromised limb gait system attached to the wheeled frame, where the compromised limb gait system is configured to guide a limb of a user through a simulated gait motion. In aspects, the medical walker gives an amputee patient mobility by providing a leg brace support for the compromised limb with a flexible connection to the walker that guides the compromised limb through a biomechanically proper walking motion, thus allowing the compromised limb to be exercised.

The invention relates to a prosthetic foot with a foot part, a lower leg part (36) arranged pivotably on the foot part (38) and a hydraulic system, wherein the hydraulic system has two hydraulic chambers (40) that are fluidically connected by a hydraulic line, wherein a switching valve is located in the hydraulic line and has a valve housing (2) with an inlet connection (6) and an outlet connection (8), and has a switching shaft (4) which can be moved in a shaft chamber of the valve housing (2) and which can be brought into a first position in which the inlet connection (6) is fluidically connected to the outlet connection (8) and into a second position in which the inlet connection (6) is fluidically separated from the outlet connection (8), wherein an actuating element (16) is arranged at least at one end of the switching shaft (4), wherein a seal (20) is arranged between the actuating element (16) and the valve housing (2) and seals an intermediate space between the actuating element (16) and the valve housing (2) in both positions of the switching shaft (4).

A tibial component of a prosthetic knee implant comprises an implant tray, medial and lateral articular pads, first and second pivot bearings, and first and second cushion members. The implant tray includes medial and lateral sockets. The medial articular pad is supported within the medial socket by the first pivot bearing which engages the socket's bottom surface and the first cushion member which is sandwiched between the first pivot bearing and the medial articular pad. The lateral articular pad is supported within the lateral socket by the second pivot bearing which engages the socket's bottom surface and the second cushion member which is sandwiched between the second pivot bearing and the lateral articular pad. The pivot bearings pivot, roll, and slide against the socket bottom surfaces whereby the articular pads can pivot and rotate within the sockets. The cushion members absorb forces and impacts experienced by the articular pads.

A prosthetic or orthotic device (POD) can include first and second limb members coupled at a joint, an actuator, and a controller. The actuator can be configured to actuate the first limb member relative to the second limb member. The controller can cause the actuator to exhibit a force rejection behavior during a portion of stance phase and cause the actuator to exhibit a force following behavior during a portion of swing phase. The controller can, based on a determination that a gait parameter satisfies a gait parameter threshold, cause the actuator to at least one of: apply a first torque at the joint to cause the POD to flex during a portion of stance phase, decelerate flexion of the POD during at least a first portion of the swing phase, or decelerate extension of the POD during at least a second portion of the swing phase.

A powered prosthesis includes a phase-based hybrid kinematic and impedance controller (HKIC) that facilitates semi -volitional, biomimetic stair ascent and descent at a variety of step heights. A unified phase variable for both stair ascent and descent uses lower-limb geometry to adjust to different users and step heights. A modified cost function and constraint are used to create a continuously varying impedance parameter model for stair ascent and descent over a continuum of step heights. Experiments with above-knee amputee participants confirms that the controller produces biomimetic ascent and descent joint kinematics, kinetics, and work across multiple step height configurations. The controller results in a powered prosthesis with improved kinematic performance in comparison with a passive microprocessor-controlled device during stair locomotion.

A method for planning a surgery to a knee joint includes recording a target HKA for a patient and, based on an evaluation of wear of the knee joint, setting an initial resection plan including setting planned femoral resections and setting at least one planned tibial resection. The method includes determining a planned HKA of the patient based on the initial resection plan. The planned HKA is a function of a femoral coronal alignment provided by the planned femoral resections and a tibial coronal alignment of the patient provided by the planned at least one tibial resection. The method further includes selectively adjusting the initial resection plan based on the target HKA and the planned HKA by adjusting the planned tibial coronal alignment and / or the planned femoral coronal alignment to provide an adjusted resection plan with an adjusted planned HKA that is within a threshold of the target HKA.

The invention relates to a prosthetic foot shell (1) designed to cooperate with a spring-loaded prosthesis known as a dynamic-return prosthesis, and to a method and device for manufacturing such a shell. The shell (1) comprises a sole portion (2) made of elastomer or flexible plastic and an upper portion (3) obtained by injection molding of expanded EVA (expanded IMVEA), defining an internal volume suitable for receiving and completely covering the body of the blade. This upper portion is provided with a friction-flow slot for the exit of the connecting end portion. Figure for the abstract: Fig 1

The application provides a pressure measurement module, a pressure measurement method and a surgical robot system, the pressure measurement module comprising: a contact body, a base, a buffer connecting part, a first sensor and a second sensor; the contact body and the base are arranged apart along a first direction to form a first gap, and the contact body and the base are connected through the buffer connecting part; the buffer connecting part has a deformation characteristic parameter that changes linearly with stress, and the buffer connecting part deforms when the contact body is subjected to pressure from a first object and generates displacement along the first direction; the first sensor is used to obtain the change amount of the deformation characteristic parameter of the buffer connecting part due to deformation; the pressure measurement module is configured to obtain the stress borne by the buffer connecting part according to the change amount of the deformation characteristic parameter; the second sensor is arranged on the base and located in the first gap; the second sensor is used to obtain the pressure from the contact body; and the pressure data comprises the sum of the stress borne by the buffer connecting part and the pressure obtained by the second sensor.

A method of cooling a prosthetic socket includes placing a thermally conductive heat spreader including a curved shape portion in contact with a residual limb of a user, placing a heat extraction subsystem through a wall of the prosthetic socket and coupling the heat extraction subsystem to the thermally conductive heat spreader, and operating the heat extraction subsystem to drive heat from inside the prosthetic socket to an external environment using the thermally conductive heat spreader and the heat extraction subsystem such that a desired temperature is maintained in the prosthetic socket.

A prosthetic coupling device includes an internal mount including a proximate shaft portion and a distal mounting portion, a threaded sleeve formed around the distal mounting portion of the internal mount, the threaded sleeve including outer threads, and a rotatable barrel formed around the proximate shaft portion and the distal mounting portion of the internal mount, the rotatable barrel including internal barrel threads that interface with the outer threads of the threaded sleeve. The prosthetic coupling device further includes a detachable coupler formed to fit within the distal mounting portion of the internal mount, the detachable coupler including a coupler detent formed on a radially external surface of the detachable coupler. The prosthetic coupling device further includes a horizontal ball bearing shaft formed through the internal mount, the horizontal ball bearing shaft housing a ball bearing set wherein the ball bearing set interfaces with the coupler detent to lock the detachable coupler to the internal mount when the outer threads of the threaded sleeve are fully seated into the internal barrel threads.

The application is suitable for the technical field of motion intention recognition, and provides an intelligent lower limb prosthesis human motion intention recognition method based on a stir-fried meat optimization algorithm. The application proposes a feature weight dynamic optimization framework based on the stir-fried meat optimization algorithm, realizes real-time adaptive distribution of motion feature weights through two links of offline weight vector training and real-time feature optimization execution. The algorithm achieves optimal results on 7 standard unimodal test functions and has good migration; through the above-knee amputation patient data set verification, the optimized weight matrix has the lowest number of recognition errors and the fastest optimization speed, significantly improves the classifier prediction accuracy and the environmental anti-interference ability of intention recognition, and meets the real-time requirement. The application solves the adaptability problem of intelligent lower limb prosthesis in complex life scenes, lays a foundation for high-reliability product development, has important practical application value in the motion scene recognition of lower limb prosthesis and walking aid robots, and has significant industrialization transformation potential.

The invention provides a knee joint prosthesis for swimming and a swimming prosthesis, and relates to the technical field of knee joint prostheses. The knee joint artificial limb for swimming comprises an artificial limb upper body, an artificial limb lower body, an outer side connecting rod and a shifting piston piece. One end of the outer side connecting rod is fixedly arranged on the artificial limb upper body, and the other end is pivoted with the artificial limb lower body; two shifting piston pieces are pivoted on the artificial limb upper body and the artificial limb lower body, one end of each shifting piston piece is pivoted with the artificial limb upper body, and the other end of each shifting piston piece is pivoted with the artificial limb lower body. The swimming prosthesis comprises a knee joint prosthesis for swimming. The technical effect of assisting the disabled in swimming is achieved.