41 results about "Limb amputation" patented technology

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.

The invention discloses an intelligent man-machine interaction artificial limb system for high-position upper limb amputation disabled people and a control method of the intelligent man-machine interaction artificial limb system. The system comprises a multi-degree-of-freedom artificial limb mechanism; the multi-mode sensing unit is used for collecting an interaction intention signal of a user and environment visual information; the intelligent decision-making unit is used for identifying a user task intention based on the interaction intention signal and the environment visual information and generating a high-level task plan; the task execution unit is used for driving the multi-degree-of-freedom artificial limb mechanism to execute operation according to the high-level task plan; wherein the task execution unit comprises a double-arm cooperative control module, and the double-arm cooperative control module is configured to adopt a cooperative control strategy based on the Stackelberg game to enable the prosthetic mechanism to actively generate a motion instruction coordinated with a sound arm of a user. According to the intelligent man-machine interaction artificial limb system and the control method thereof, natural, efficient and high-generalization auxiliary operation tasks can be achieved, and the system and the method are particularly suitable for daily use requirements of severe disabled people.

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 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 discloses a post-amputation nursing device for diabetic feet. The post-amputation nursing device comprises a base, an arc-shaped supporting plate and a supporting soft cushion. The arc-shaped supporting plates are placed in arc-shaped containing grooves of the base, the left arc-shaped supporting plate and the right arc-shaped supporting plate are hollow arc-shaped supporting plates, a plurality of adjusting air cylinders are evenly distributed in grooves in the upper surfaces of the arc-shaped supporting plates, and the supporting soft cushion is placed on the arc-shaped supporting plates and composed of a plurality of air cushion units. The front side, close to the bottom, of the base extends forwards to form a sliding table, and a nursing mechanism is arranged on the sliding table. The post-amputation nursing device for the diabetic foot is placed below a post-amputation limb, the post-amputation limb of the diabetic foot is clamped under the condition that the post-amputation limb is evenly stressed through the mutual synergistic effect of the supporting plate driving air cylinder, the adjusting air cylinder, the air pump, the pneumatic electromagnetic valve and the gas electromagnetic distribution valve, and then the end of the post-amputation limb is effectively heightened; the wound surface is prevented from being contacted with the bed surface after the amputation of the urine foot, so that the injury caused by compression or friction is avoided.

The invention relates to an improved method for manufacturing a so-called final socket (2') from a provisional socket (2), for fitting a residual limb of an amputee. The method comprises 3D modeling of the inner surface of the provisional socket (2), including a 3D model (44) of said surface in a spatial reference frame (11), and automatic modification of said 3D model (44) to optimize the arrangement of an artificial limb (3) on the final socket (2). The method further comprises optimizing a digitization step by determining an improved position for a distance measuring tool (42) within the provisional socket (2) during modeling. The invention also relates to a manufacturing aid system for a final socket configured to implement the method of the invention. Fig. 8

The invention discloses a PTB socket model optimization design method and device, electronic equipment and a product, and relates to the technical field of rehabilitation engineering and rehabilitation assistive devices. According to the invention, the inner surface of the artificial limb socket model is divided into a pressure sensitive area and a pressure tolerance area, and a load is applied by simulating the maximum ground reaction force supported by a single leg when a shank amputation patient is assembled with an artificial limb to walk; then, the displacement increment of the grid surface in each pressure tolerance area is iteratively optimized through an optimization algorithm by taking the maximum overall comfort degree of the artificial limb socket model as a target, so that optimization design can be carried out according to individual differences of shank amputation patients, and the conditions of stress concentration of a sensitive area and insufficient support of a tolerance area are avoided; discomfort, pain and even secondary injury brought to the patient suffering from shank amputation are avoided, and the use experience of the patient suffering from shank amputation is improved.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The invention relates to an improved method for manufacturing a prosthesis (1') from a positive mould (110), for fitting to a residual limb of an amputee. The method comprises 3D modelling of the inner surface of an existing socket (2) comprising a 3D model (44) of the surface in a spatial reference system (10) and automatic modification of the 3D model (44) in order to optimize the arrangement of an artificial limb (3) in the socket (2') to be manufactured. The method further comprises determining a position of a fastener (116) in the spatial reference system (10) with the aid of a guide (112) for placement of the fastener (116). The invention also relates to a manufacturing aid assembly (100) configured to aid in the manufacture of a socket according to the method of the invention and comprising a positive mould (110) and the placement guide (112).

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The present disclosure provides systems, devices, and apparatuses for prosthetic fingers that can be used in a person who has had a metacarpophalangeal joint or proximal amputation. The apparatus provides opposition to force in the extension direction via a spring-loaded pawl and locking rack and pinion mechanism, restoring grip force in a person missing a finger or thumb, allowing the individual to manipulate or stabilize objects. The finger can be spring loaded in the extension direction by a torsion spring or other biasing member. The pawl can automatically disengage the rack when the finger reaches full flexion, and the full flexion disengagement stop can be adjustable. The pawl can automatically engage the rack when the finger is fully extended, and the extension stop is adjustable. The pawl can include a transverse feature that creates an obstruction with the anchoring linkage and limits deflection of the structure under loading.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The invention discloses an inactive finger exoskeleton. The inactive finger exoskeleton comprises a fixed seat, an upper pull rod, a lower pull rod and knuckles, wherein the fixed seat comprises an annular seat and two symmetrical arm parts, the arm parts extend out in parallel from the two sides of the annular seat to the Z direction, a fixed seat hole is formed in the annular seat, and an upper fixed hole and a lower fixed hole are formed in the arm parts; the upper pull rod comprises an upper near-end hole located in the near end and an upper far-end hole located in the far end. The lower pull rod comprises two parallel supporting arms extending in the Z direction, and the two ends of each supporting arm are provided with a lower near-end hole or a lower far-end hole respectively. An upper pressing plate and a lower pressing plate which are parallel to each other are also arranged between the two support arms; each knuckle comprises a finger end and a connecting end located at the near end, and a knuckle upper hole and a knuckle lower hole are formed in each connecting end. According to the invention, the grasping and stretching actions of the hand of a natural person are simulated, and the life self-care ability of a person with finger amputation or insufficiency is obviously improved.

A prosthetic liner has a lower longitudinal extensibility in a distal region than in a proximal region, or optionally an intermediate region. The distal end region may have a vertical extension between 0-30% and a horizontal extension between 10-200%, while in contrast, the proximal end region has a vertical extension between 55-125% and a horizontal extension between 100-175%. The extensibility of the lining in each pressure sensitive area of the stump can also be reduced or improved according to the area. A variety of stitches may be used at the distal end to achieve this reduced longitudinal extensibility. Preferably, the liner is made of a stretchable material. The liner also has an inner layer of elastomeric gel. The design of the prosthesis lining is mainly used for preventing piston movement of the residual limb of the amputee in the lining and improving the comfort level of a pressure sensitive area of the residual limb.

A weightlifting device with a customized forearm brace, including elements of the customization of the device is provided. The device effectively grips a weight in lieu of a hand, thereby enabling people with upper extremity (hand, wrist, or finger) injuries, deformities, amputations and any other related afflictions to circumnavigate their ailment(s) and engage in weightlifting exercise.

Various aspects of this disclosure relate to a prosthetic cover comprising an array of sensors, which transmit signals to an array of electrodes in a liner that fits over a residual limb of an amputee. Different interactions with the prosthetic cover cause different activation of the electrodes to transmit electrical current through different areas of the residual limb and modulate neurons differently within the residual limb.

A kind of bionic intelligent foot ankle prosthesis based on complex conjugate surface rolling, including foot sole structure, talus structure is connected on foot sole structure, talus structure is connected with talus rolling joint;Talus structure is connected with ball screw sliding block through achilles tendon structure, ball screw nut is connected on ball screw sliding block, ball screw is installed between screw base and motor screw fixed block, screw base, motor screw fixed block are fixed on tibia structure;Tibia structure bottom is connected with tibia rolling joint, tibia rolling joint is connected with talus rolling joint and rolls, is constrained by parallel spring, both ends of parallel spring are connected on tibia structure and talus structure;Ball screw is driven by motor, motor is fixed on tibia structure;The present application can accurately fit the motion characteristics of human ankle joint, effectively promote lower limb movement mode of foot ankle amputee, so that prosthesis gait is more smooth and natural, with wide application prospect.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

A method for operating a prosthetic socket (4) for receiving an amputation stump (1) is proposed, wherein the prosthetic socket (4) has at least one pressure chamber (7), the pressure chamber (7) being connected to a valve (6, 8) for letting fluid in and out of the pressure chamber (7), and wherein the pressure in the pressure chamber (7) is regulated according to the situation. Furthermore, a prosthetic socket (4), a method for manufacturing a prosthetic socket (4), and a method for providing a prosthetic socket (4) are proposed.

The application discloses a PTB receiving cavity model optimization design method and device, electronic equipment and products, and relates to the technical field of rehabilitation engineering and rehabilitation aids. The application divides the inner surface of a prosthesis receiving cavity model into a pressure sensitive area and a pressure resistant area, simulates the maximum ground reaction force loading of single leg support when a below-knee amputee wears a prosthesis, and then iteratively optimizes the displacement increment of the grid surface in each pressure resistant area through an optimization algorithm with the maximum overall comfort of the prosthesis receiving cavity model as the target, so that the individual differences of the below-knee amputee can be optimized and designed, the stress concentration in the sensitive area and the insufficient support in the resistant area can be avoided, the discomfort, pain and even secondary injury of the below-knee amputee can be avoided, and the use experience of the below-knee amputee is improved.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

The application discloses a built-in prosthesis connector for stump reconstruction of a semi-pelvic amputee, which comprises a prosthesis base, a first tapering handle and a second tapering handle. The prosthesis base is a basic component of the whole built-in prosthesis connector and bears the function of connecting a stump bone bed and other components. The distal end of the prosthesis base extends in a vertical direction to form the first tapering handle. The proximal end of the first tapering body is taperingly connected with the distal end of the prosthesis base, and the distal end of the first tapering body extends in a sacroiliac force line direction to form the second tapering handle. The second tapering body is taperingly connected with the distal end of the first tapering body, and the distal end of the second tapering body is connected with a distal end prosthesis through a prosthesis adapter. The application enables the semi-pelvic amputee to realize effective connection between the built-in prosthesis connector and the amputation stump for the first time, thereby recovering part of the limb function of the patient, obtaining the function of standing and bearing weight, and significantly improving the life quality.

The invention relates to medical technology, and more particularly to an adjustable crutch. The crutch comprises: a support post consisting of an upper support post and a lower support post, which are provided with height adjustment mechanisms; a shoulder support which is fastened to the top of the upper support post; a support handle which is mounted on the upper support post above the height adjustment mechanism; and a support foot which is mounted to the bottom of the lower support post. The axes of the upper support post and the lower support post are offset in relation to one another, and the support handle is configured for displacement when the distance between the armpit and hand is adjusted. A support platform with a leg rest fastened thereto is fastened to the bottom of the upper support post. At the top of the lower support post and on the support platform, there is a displacement mechanism in the form of a dovetail fixture, which can be secured by adjustment screws and allows transverse movement of the support platform and the lower support post in relation to the upper support post. The invention increases the mobility of persons who have undergone transfemoral amputations or suffered other injuries of the lower limbs.

The application discloses an intelligent display upper limb myoelectric prosthesis, and relates to the technical field of upper limb prostheses.The intelligent display upper limb myoelectric prosthesis comprises a connecting arm, which is connected to an amputation site and internally provided with an induction electrode; a driving arm, which is fixed to the connecting arm and internally provided with a driving motor; a wrist assembly, which is installed at one end of the driving arm away from the connecting arm; a hand prosthesis, which is fixed to an output end of the wrist assembly; and a display, which is installed on the connecting arm and used for displaying and adjusting the overall state of the prosthesis.

Various aspects of this disclosure relate to a layered polymer substrate with electrodes and conductive ink embedded in the substrate. In some embodiments, a prosthetic liner may be bonded onto the polymer substrate. The substrate may include an interconnect coupled to the electrodes via the conductive ink. The system may include a controller (e.g., an electrode controller) in communication with the electrodes via the conductive ink. The electrodes may be activated such that they may stimulate nerve fibers in a user's residual limb.

A method and apparatus for treating bone or other infection in a patient to minimize the number of limb amputations which employs a unique, three-dimensional software-controlled electronic phased array amplifier system using arbitrary waveforms that dynamically and proportionally steer electrical currents by using two or more current vector paths, sequentially or simultaneously, through a defined infected area containing electrically-conductive ionic solutions so as to obtain 100% treatment using low or high voltage, low current that delivers electrical stimulation (ES) using a low DC current through and or around the defined infection treatment area. The minimally invasive treatment of the infection requires no radiation or chemotherapy that could be harmful to the patient.

The utility model discloses an artificial lower limb capable of intelligently adjusting damping based on an IMU (Inertial Measurement Unit) and magnetorheological fluid. Comprising a stump mounting sleeve, an artificial thigh part, a knee rotary magnetorheological fluid damper, an artificial shank part, a leg telescopic magnetorheological fluid damper, an ankle rotary magnetorheological fluid damper, an artificial foot part, a foot telescopic magnetorheological fluid damper, an inertia measurement sensor, a first pressure sensor, a second pressure sensor and a damping controller, the stump mounting sleeve is arranged at the upper end of the thigh artificial limb part and used for being connected with a thigh amputation part, and the bottom end of the thigh artificial limb part is rotationally connected with the shank artificial limb part through the knee rotary magnetorheological fluid damper; the bottom end of the lower leg artificial limb part is connected with the artificial foot part through the ankle rotary magnetorheological fluid damper, a gravity center cavity is formed in the gravity center position of the whole artificial lower limb, and the inertia measurement sensor is installed in the gravity center cavity.

The utility model provides a single -shaft hydraulic pressure bearing knee joint, this design can utilize human body's own weight to activate hydraulic system, its high complex hydraulic mechanism makes the amputee can walk in natural, smooth way, realizes the stable conversion of gait in each stage in gait cycle, it includes the connecting body, the connecting body is hollow structure, the bottom of connecting body is provided with end impact damping, the top of connecting body rotatory installation has top end impact damping, the inside of connecting body is provided with damping hydraulic press, the output of damping hydraulic press is connected with top end impact damping through axle pin rotation, the bottom of damping hydraulic press is connected with adjusting mechanism, adjusting mechanism bottom and end impact damping fixed mounting, adjusting mechanism includes hydraulic control seat, be provided with sensitivity adjusting screw, first adjusting screw, second adjusting screw and locking switch on the hydraulic control seat.

1. The name of the design product: walking aid (amputee walking aid with shock absorber). 2. The use of the design product: for assisting the movement of amputee patients, providing movement support, promoting limb coordination of patients, and enhancing the self-activity ability of patients. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The bottom surface of the design product is not easily visible or invisible during use, and the top view is omitted.