33results about "Artificial hands" patented technology

This utility model relates to a hand with a gripping thumb, aiming to solve the problems of existing prosthetic hands, such as limited functionality, complex structure, difficult maintenance, non-removable components, and excessive weight. The hand with a gripping thumb includes a palm shell, a thumb mechanism, a return spring, and a control cable. The palm shell is a hollow structure with an internal hinge seat and a long slot. The thumb mechanism consists of a thumb head, a hinge shaft, and a drive arm, and is installed inside the palm shell. The return spring connects the drive arm and the fixed seat, and the control cable connects to the drive arm and extends from the wrist, achieving the swinging gripping of the thumb head through its reaction with the return spring. This utility model has a simple structure, few parts, low cost, and is easy to maintain. The palm cover of the palm shell is removable, facilitating repair and replacement, and reducing maintenance costs. The overall design is lightweight, reducing the burden on patients and providing a practical, economical, and reliable solution for amputees, meeting their diverse daily needs.

In accordance with at least one aspect of this disclosure, a prosthetic includes a first portion extending along an axis configured to receive and partially surround a residual limb of a user. A second portion is moveably connected to the first portion, wherein the first portion and the second portion come together to define an interior space for supporting the prosthetic appendance on the residual limb of the user. A sensor is disposed on an inner surface of the first portion and within the interior space. A controller is operatively connected to the sensor to receive a first pressure signal from the sensor indicative of a pressure of the residual limb on the inner surface of the first portion. The controller is configured to adjust the second portion relative to the first portion based on the pressure signal received from the sensor to expand or retract a volume of the interior space of the first portion to accommodate radial growth and shrinkage of the residual limb relative to the axis.

The invention relates to a prosthetic system comprising a prosthetic socket (20) that can be attached to a limb stump (1), and several recording electrodes (10) for detecting electrical muscle activity, a control unit connected to the recording electrodes (10), and a driven prosthetic component (2) that is attached to the prosthetic socket (20) and coupled to the control unit (80), with a surface electrode arrangement (200) having several surface electrodes (100) that can be attached around the circumference of a limb stump (1), wherein the surface electrode arrangement (200) can be slidably and / or rotatably arranged on the limb stump (1), wherein the surface electrodes (100) and / or recording electrodes (10) are designed as a dome screw (15) with a dome nut (14) and are screwed to the surface electrode arrangement (200) or the prosthetic socket (20). are.

This invention relates to the field of exoskeletons and specifically discloses a passive assist arm and a wearable device, which includes a main support, a rotating swing arm, and an elastic member. The main support, as the main structure, is connected to the waist and shoulder of the human body, respectively, and supports the entire assist arm structure. The rotating swing arm is movably connected to the main support and swings synchronously with the wearer's arm. The elastic member is provided within the main support and connected to the rotating swing arm. The elastic member contracts and pulls the rotating swing arm, causing it to rotate away from the waist of the human body, thereby providing an assist force. A tension member is also connected to the elastic member, and a lock base is provided on the main support for locking the tension member. By pulling and locking the tension member, the magnitude of the elastic force of the elastic member can be adjusted and held, thereby enabling adjustment of the assist force. This invention has the advantages of adjustable assist force, a simple and stable structure, and low implementation costs.

Provided is a thermally actuated artificial muscle-based prosthetic finger, which comprises a prosthetic finger skeleton, a first artificial muscle (01) attached to a flexion side of the prosthetic finger skeleton, and a second artificial muscle (02) attached to an extension side of the prosthetic finger skeleton. The first artificial muscle (01) and the second artificial muscle (02) are made of unidirectionally actuated shape memory polyurethane. The prosthetic finger further comprises a heating mechanism configured to actuate the first artificial muscle (01) and the second artificial muscle (02). According to specific driving and transmission parameters required for a finger target action, the unidirectionally actuated shape memory polyurethane is selected as an artificial muscle material. A network structure composed of segments (hard segments and soft segments) is constructed. By adjusting and controlling the response temperature, degree of orientation, crystallinity, modulus, and microscopic driving force, a biomimetic match with the motion variables of the finger is achieved.

The invention relates to an orthopedic joint device having an upper part and a lower part which is hinged about a pivot axis to said upper part, having a flexion moment-controlled retainer device that is positioned between the upper part and the lower part, blocks a flexion and releases the flexion when a predefined flexion moment is exceeded, wherein a control element is associated with the retainer device and is coupled to a delaying element.

A gear set comprising an input shaft, an output shaft, a gear; and a friction pad. In a first configuration, the gear set has a first gear ratio for the input shaft rotational speed to the output shaft rotational speed equal to N:1, where N is not equal to 1. In the first configuration, the gear rotates relative to the friction pad. In a second configuration, the gear set has a gear ratio for the input shaft rotational speed to the output shaft rotational speed equal to 1:1, wherein the friction pad prevents rotation of the gear relative to the friction pad.

A robotic lower arm assembly includes a forearm member; a hand member, the hand member including a plurality of appendage members; a plurality of control cables, the plurality of control cables coupled at a first end to the forearm member and coupled at a second end to the plurality of appendage members, one of the plurality of control cables configured to apply a force to an appendage member of the plurality of appendage members to actuate the appendage member; and a wrist joint pivotably coupled to the forearm member and the hand member. The plurality of control cables are arranged in a first configuration on a forearm side of the wrist joint and arranged in a second configuration different from the first configuration on a hand side of the wrist joint opposite the forearm side.

A computer-implemented method is provided for associating a human body gesture to a detected myoelectric signal. The method comprises: detecting at least a part of a myoelectric signal as the detected myoelectric signal; and performing the following first process steps, each of said first process steps using a computer system comprised in an orthopedic assistive device, said computer system comprising at least one processor, a wireless transmission system, and a wireless reception system: deriving data from the detected myoelectric signal, the derived data representing at least part of an information-content of the detected myoelectric signal, a data volume of the derived data being smaller than a data volume of the detected myoelectric signal; sending the derived data using the wireless transmission system; and checking for a response received using the wireless reception system, said response comprising a first human body gesture. The method further comprises performing, before, after, during, or in between the first process steps, using the computer system comprised in the orthopedic assistive device, a recognition process to determine a second human body gesture corresponding to the detected myoelectric signal; and determining, by the computer system, the one of the first human body gesture and the second human body gesture which is first available at the computer system as the human body gesture associated with the detected myoelectric signal.

Disclosed is a biomimetic finger (1000), the biomimetic finger comprising a mounting base (100), a first phalanx (200), a second phalanx (300) and a first elastic member (410). The mounting base comprises a first connecting arm assembly (110) and a second connecting arm assembly (120) located at the side of the first connecting arm assembly close to a holding side (1001). The first phalanx comprises a linear drive member (210) and a housing (220); the end of a main body structure (211) of the linear drive member away from an output shaft (212) of the linear drive member is rotatably connected to the first connecting arm assembly; the end of the housing away from the output shaft is rotatably connected to the second connecting arm assembly. The second phalanx comprises a third connecting arm assembly (310) and a fourth connecting arm assembly (320) located on the side of the third connecting arm assembly close to the holding side; the third connecting arm assembly is rotatably connected to the output shaft; the fourth connecting arm assembly is rotatably connected to the end of the housing away from the second connecting arm assembly. The first elastic member acts between the housing and the second connecting arm assembly. Further disclosed are a biomimetic hand and a robot, which comprise the biomimetic finger. The biomimetic finger can improve the degree of fit with an object to be taken, thus improving the stability of gripping.

The invention relates to a method for setting up a control system for an orthopaedic device (10) that can be applied to a part of a patient's body and that has a sensor device (20) with at least one sensor (22) and at least one drive (24) connected to a control device (30), wherein the sensor device (20) receives patient data and transmits it as sensor signals to the control device (30), and the drive (24) drives at least one adjustable component (12) of the orthopaedic device (10), wherein at least two control modes are stored in the control device (30) in which the drive (24) is activated, deactivated, or modulated based on the sensor signals, and switching between the control modes is performed via a trigger signal, wherein the sensor device (20) has several sensors (22) and acquires several sensor signals.which are attributable to a switching process, evaluation of the sensor signals attributable to the switching process, by means of pattern recognition and assignment of the evaluation to the trigger signal.

The application belongs to the technical field of soft robots, and discloses a pneumatic soft dexterous hand suitable for patients with finger function loss and a soft robot, the pneumatic soft dexterous hand comprising a soft finger, the soft finger comprising a rubber shell, a silica gel tube, an endoskeleton and an embedded air bag, the silica gel tube being sleeved in the rubber shell; the silica gel tube is formed with a cavity, and the endoskeleton and the embedded air bag are arranged in the silica gel tube; the endoskeleton comprises a plurality of skeleton modules hinged together, the plurality of skeleton modules are divided into two groups, the two groups of skeleton modules are alternately arranged left and right and sequentially hinged; the embedded air bag is embedded on the endoskeleton and plays a supporting role on the endoskeleton. The application ensures that the soft finger itself will not be laterally bent due to external force based on the anisotropy of the endoskeleton.

A prosthesis (1) of an amputated limb for a pet is disclosed, wherein: it comprises a main body (2) extending longitudinally, which is hollow, which is made in a single piece and which is shaped to receive a stump (3) of an amputated limb (4); the main body (2), in turn, comprises: a first part (5) extending along a first axis (A1) and forming a tubular structure; a second part (6) extending along a second axis (A2) and having a first opening (7); it comprises an end (8) which is connected to the first part (5) and which comprises an external surface (9) arranged to contact the ground during the use of the prosthesis (1) of the limb. Furthermore: the prosthesis (1) of the limb comprises anchoring means (10) which are carried by the second part (6) and which are arranged to anchor the stump (3) of the amputated limb (4) and the main body (2) to each other; the first part (5) and the second part (6) are angularly arranged with respect to each other so that the second part (6) laterally embraces part of the radius and ulna bones of the anterior amputated limb (4) or part of the tibia and fibula bones of the posterior amputated limb (4), and the first part (5) receives the stump (3) of the amputated limb (4) during the use of the prosthesis (1) of the limb.

This system for identifying information represented by biological signals is configured so as to detect biological signals (S501), analyze the detected biological signals and then output feature data (S502), determine the respective similarities between the feature data and a plurality of teaching data (S503), store the similarities per time in a time series (S504), and determine information represented by the biological signals on the basis of the plurality of similarities within a prescribed period among the stored similarities in the time series (S505).

A brain-controlled robotic prosthetic arm integrates a hybrid neural network model, combining Convolutional Neural Networks and Recurrent Neural Networks for advanced electroencephalography signal processing. The system enables users to control the prosthetic arm using brain signals, with supplementary integration of manual operation. The modular design allows for user-attachable extension parts, customizable configurations, and 3D-printed components tailored to the user's anatomy. Each finger is actuated by an independent micro linear motor, providing precise control and lifelike movements. The prosthetic arm incorporates a sensory feedback system, with flexible material on the fingertips embedded with sensors that detect tactile forces, temperature, and pressure. This feedback is delivered in real time to enhance the user's perception of interaction with their environment. The hybrid neural network utilizes transfer learning and Generative Adversarial Networks for data augmentation, addressing challenges in electroencephalography signal variability and data scarcity to improve classification accuracy.

This invention discloses a silent one-way valve, a hydraulic cylinder, a prosthesis, and a robot. The silent one-way valve includes: a valve body forming an inlet channel, a receiving channel, and at least two outlet channels; a valve core located within the receiving channel and sealed to the inner wall of the inlet channel; an elastic element providing an elastic force for the valve core to move towards the inlet channel; both the receiving channel and the outlet channels are connected to the inlet channel; at least two outlet channels are centrally symmetrically distributed around the receiving channel. The presence of at least two outlet channels, arranged centrally symmetrically, divides the fluid entering the channel into at least two equal parts, which flow to the corresponding outlet channels. This facilitates the mutual cancellation of the thrust exerted on the valve core by different outlet channels, preventing the valve core from being affected by fluid vortices within the valve body, thus avoiding rolling, hitting walls, and vibration, thereby reducing noise. Therefore, a silent one-way valve can be achieved.

This invention relates to a flexible bio-based phase change pressure heating material, its preparation method, and its application. In a first aspect, the invention provides a flexible bio-based phase change pressure heating material comprising a phase change pressure heating composite layer and a first encapsulation layer and a second encapsulation layer covering the upper and lower sides of the composite layer. The phase change pressure heating composite layer is composed of a flexible support layer and a phase change pressure heating core layer loaded within the flexible support layer by a vacuum impregnation method. The phase change pressure heating core layer is composed of a bio-based phase change core and a conductive control network. The bio-based phase change core is a silk fibroin and polyethylene glycol composite system, and the conductive control network is Ti3C2T. x The material comprises an MXene-carboxylated carbon nanotube composite system; a flexible support layer made of freeze-dried bacterial cellulose aerogel; and two encapsulation layers, both composed of chitosan and hyaluronic acid composite films. This phase change pressure thermostat material features low pressure triggering, high flexibility, high biocompatibility, and precise thermal regulation.

Waterproof covers for prosthetics. The waterproof cover may be used with a prosthetic hand or other prosthetics or orthotics. The waterproof cover protects the interior components of the prosthetic. The cover may be flame-resistant. The cover may include two layers. An example cover may have an external layer of fabric knitted from aromatic polyamide (meta-aramid) fiber such as NOMEX® yarn and an interior polyurethane or silicone layer. Another example cover may have a single layer, made of woven aromatic polyamide fiber such as NOMEX or Kevlar® with a silicone coating on one or both sides. For a prosthetic hand, the cover may extend between a thumb and a palm.

A wrist apparatus for a prosthetic hand comprises a base and a hand mount to which a prosthetic hand is mountable. The hand mount is attached to the base and is movable relative to the base between, and releasably retainable in, at least two different positions corresponding to at least two different hand flexion configurations.

A computer-implemented method is provided for associating a human body gesture to a detected myoelectric signal. The method comprises: detecting at least a part of a myoelectric signal as the detected myoelectric signal; and performing the following first process steps, each of said first process steps using a computer system comprised in an orthopedic assistive device, said computer system comprising at least one processor, a wireless transmission system, and a wireless reception system: deriving data from the detected myoelectric signal, the derived data representing at least part of an information-content of the detected myoelectric signal, a data volume of the derived data being smaller than a data volume of the detected myoelectric signal; sending the derived data using the wireless transmission system; and checking for a response received using the wireless reception system, said response comprising a first human body gesture. The method further comprises performing, before, after, during, or in between the first process steps, using the computer system comprised in the orthopedic assistive device, a recognition process to determine a second human body gesture corresponding to the detected myoelectric signal; and determining, by the computer system, the one of the first human body gesture and the second human body gesture which is first available at the computer system as the human body gesture associated with the detected myoelectric signal.

The utility model discloses a control device of a myoelectric hand, which is applied to the field of bionic hand development and comprises a controller and a parameter regulator electrically connected with the controller in a selective adsorption mode, a control unit is arranged in the controller, a touch display screen is arranged on the parameter regulator, the control unit is electrically connected with the touch display screen in a selective mode, and the touch display screen is electrically connected with the controller. The input end of the control unit is electrically connected with an extensor sensor and a flexor sensor which are arranged on muscles, and the output end of the control unit is connected with the bionic flashlight. The bionic hand is simple and easy to use, high in adjusting speed and high in adjusting efficiency, use of the bionic hand cannot be affected by individual differences of users, and various requirements of the users are met; according to the bionic hand, the controller and the parameter adjusting device are arranged in a split mode for control of the bionic hand for the first time, the parameter adjusting device is used for parameter adjustment and control debugging, the controller is placed in the receiving cavity and used for program operation and processing, and the whole bionic hand looks smaller, more durable, attractive and elegant and is deeply loved by users.

The present application belongs to the technical field of artificial limb and rehabilitation engineering, and relates to a humanoid shoulder joint prosthesis device based on amplification mechanism, which comprises a driving device, a transmission device, a three-degree-of-freedom spherical motion generation device and a motion space amplification device. The driving device adopts three groups of motor modules which are parallel along the axial direction and symmetrically distributed on the end face, to realize independent driving of three active branch chains; the transmission device reliably transmits the motor output to the spherical motion mechanism through multi-stage transmission shaft and gear structure; the three-degree-of-freedom spherical motion generation device is composed of an amplification support platform, a moving platform and three branch chains containing active rods and driven rods; the motion space amplification device is composed of two groups of 5R mechanisms, and is used for realizing multiple amplification of the joint motion space. The overall structure of the device is symmetrical and compact, has high stability and adjustable motion space, can realize multi-degree-of-freedom large-range motion of the humanoid shoulder joint, and is suitable for upper limb prosthesis wearing, rehabilitation training and robot assisted operation scenes.

The application discloses a kind of bionic intelligent artificial limb hand structures based on antagonistic line drive and modular design, including artificial limb arm, the one end of the artificial limb arm is movably connected with the mechanical palm, the one end of the mechanical palm is movably connected with five the mechanical fingers, the top of the artificial limb arm is fixedly installed with the main control calculation module, the bottom of the artificial limb arm is fixedly installed with the bioelectric signal acquisition module, the inner wall of the artificial limb arm is fixedly installed with the mechanical motion driving module.The application discloses a kind of bionic intelligent artificial limb hand structures based on antagonistic line drive and modular design, solve the problem that traditional mechanical prosthesis mainly relies on shoulder strap or trunk traction to realize action, user needs to be trained for a long time and complex in the use process can hardly adapt, and its action performance is single, flexibility is seriously insufficient, greatly improve the natural degree and flexibility of artificial limb action.

The invention relates to a drive device for an orthopedic device (1), comprising a motor (20) mounted in a housing (10), which motor drives a shift gear (70) via a drive element (40) and at least one reduction gear (30), which shift gear is coupled to a driven element (90) of the device (1) via an output element (75), according to the invention, the motor (20) drives the gearing-down mechanism (30) which is coupled to the shift clutch (70) via a drive element (40) located downstream of the gearing-down mechanism (30), the drive element (40) being coupled in a force-transmitting manner to two wheels (42, 44) which are supported on a housing cover (12) which is fixed to the housing (10).

Prosthetic devices and, more particularly, modular myoelectric prosthesis components and related methods, are described. In one embodiment, a hand for a prosthetic limb may comprise a rotor-motor; a transmission, comprising a differential roller screw; a linkage coupled to the transmission; and at least one finger coupled to the linkage. In one embodiment, a component part of a wrist of a prosthetic limb may comprise an exterior-rotor motor, a planetary gear transmission, a clutch, and a cycloid transmission. In one embodiment, an elbow for a prosthetic limb may comprise an exterior-rotor motor, and a transmission comprising a planetary gear transmission, a non-backdrivable clutch, and a screw.

An apparatus and method for engaging projectiles. The apparatus includes a digit configured to operably engage a projectile. The digit includes a plurality of phalanx interdigitated with a respective set of spacers and a deformable material externally coupled to at least one of the plurality of phalanx. The digit is coupled to an adjustable fastener securing the digit to a user's residual limb. Further, an articulating mechanism is coupled to the plurality of phalanx and can adjust the position of the digit.

A prosthetic thumb may have a drive assembly with a spur wheel configured to cause rotation of a metacarpal rotation wheel, and a stacked bearing arrangement supported by the spur wheel. The stacked bearing arrangement may include a clutch post and a drive shaft positioned over the clutch post and configured to rotate about the clutch post. The drive shaft may be rotationally locked to the spur wheel. The stacked bearing arrangement may include a worm wheel positioned over the drive shaft, a first friction element and a second friction element. The first friction element and the second friction element may be rotationally locked to the worm wheel. The worm wheel may rotate about the drive shaft, and the first friction element and the second friction element may oppose rotation of the drive shaft relative to the worm wheel.

Embodiments relate to a multielectrode array kit. The kit includes electrically conductive ink configured to adhere to a surface and form an electrode and an interconnect, an ink applicator configured to apply the electrically conductive ink to the surface, an insulative material applicator configured to apply an electrically insulative material to the surface, and an electrical contact configured to place the interconnect in electrical connection with a data acquisitioning system. Embodiments also relate to a method for performing electromyography. The method involves applying an electrically conductive ink to a surface of skin to form an electrode point, applying the electrically insulative material to the surface of skin, applying the electrically conductive ink to the insulative material to form an interconnect extending from an electrode point, and placing an electrical contact in electrical connection with the interconnect to facilitate electrical connection with a data acquisitioning system.

The invention relates to a cover for a prosthetic hand, having a textile main part that covers at least a palm area of a prosthetic hand when worn. The main part is designed as a partial glove having through-openings for prosthetic fingers and at least one distal finger cap consisting of a non-textile plastic material replaces a missing textile finger area.