26 results about "Prosthetic hand" patented technology

A prosthetic hand comprises a palm part; a proximal thumb part coupled to the palm part to form a first joint with a first axis of rotation, wherein the proximal thumb part is configured to rotate about the first axis of rotation; a distal thumb part coupled to the proximal thumb part to form a second joint with a second axis of rotation, wherein the distal thumb part is configured to rotate about the second axis of rotation; a rotary actuator configured to rotate the proximal thumb part and distal thumb part about the first axis of rotation and the second axis of rotation respectively; and a locking mechanism having a first configuration and a second configuration.

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.

Provided is an electronic prosthetic hand that detects and operates hand movements. The electronic prosthetic hand may include a prosthetic hand including a finger unit capable of joint movement and a control unit that controls the finger unit, a first sensor module positioned on a user's finger, a second sensor module positioned on the back of the user's hand, and a gyro sensor provided in each of the first and second sensor modules to measure displacement according to a change in the positions of the first and second sensor modules. The electronic prosthetic hand can be used more precisely because the first and second sensor modules detect the movements of the user's finger and back of the hand, respectively, and implement joint movements of the finger unit based on the displacement difference values according to the movements of the finger and back of the hand.

A prosthetic hand 10 comprising a palm part 20 and a thumb 30. The thumb has a proximal thumb part 100 coupled to the palm part configured to rotate about a first axis of rotation 110 and a distal th

The invention provides an artificial hand slippage sensing and self-adaptive control method based on deep learning. The method comprises the following steps: S1, acquiring data of a multi-source sensor; s2, preprocessing off-line data; s3, constructing and training a deep learning slip perception model; s4, collecting real-time data in the artificial hand grabbing process; s5, carrying out real-time data preprocessing; s6, real-time slip sensing based on a deep learning model; s7, generating a self-adaptive control decision; s8, executing the control instruction; and S9, slip state feedback verification and closed-loop adjustment are carried out. Through the design of off-line training, real-time reasoning and closed-loop feedback, the problems that a traditional artificial hand is poor in adaptability to complex scenes and not timely in sliding response are effectively solved, the method can be widely applied to the fields of artificial limbs, industrial grabbing robots and the like, and more stable and natural grabbing experience is provided for users.

A prosthetic hand having one or more digits with a lip seal and a tip, which may be a conductive tip. The lip seal has a cross-sectional profile with a contact finger inclining radially outwardly from a radially inner main body portion. The contact finger can flex to account for variable gap sizes in which the seal is used. Less motor current draw is required for digit actuation as compared to use of an O-ring seal. The lip seal can provide a waterproof seal to the knuckle. The prosthetic digit may include a replaceable, and / or conductive, distal tip. The replaceable distal tips may reversibly couple to the prosthetic digit via push on and removal with a simple tool. The conductive distal tips may harness the capacitance of metallic portions of the digit. Contact of the tip may be recognized by and operable with capacitive touch screens, such as mobile devices.

The invention discloses a body feeling myoelectricity artificial hand system fusing myoelectricity enhanced decoding and bionic electrical stimulation feedback. The system comprises a myoelectricity bracelet, a main controller, an electrical stimulator and an artificial hand. According to the system, an electromyographic bracelet is used for collecting residual limb side electromyographic signals, a main controller removes electrical stimulation artifacts in the signals in real time through a comb filtering and self-adaptive filtering series algorithm, gesture intentions are recognized online through a self-updating multi-class LDA algorithm, and the prosthetic hand is driven to execute corresponding actions. According to the system, a closed-loop feedback mechanism based on a muscle shuttle sensing model is constructed, the muscle shuttle sensing model simulates neural coding characteristics of a human body muscle shuttle, the real-time stroke of a micro servo electric cylinder of the prosthetic hand and stress information of a torque sensor are mapped into electrical stimulation frequency and voltage parameters respectively, and an electrical stimulator is controlled to apply bionic stimulation to the stump. According to the invention, closed-loop control of myoelectricity intention recognition, artificial limb action execution, state detection and electrical stimulation feedback is realized, the problems of lack of sensory feedback, serious electrical stimulation signal interference and the like of the existing myoelectricity artificial limb are effectively solved, a patient is helped to reconstruct ontology perception, and the accuracy and naturalness of artificial limb control are improved.

The invention discloses a self-driven multifunctional sensor for an artificial hand wrist. An angle-speed detection mechanism and a pulse measuring ring are integrated; the angle detection mechanism is composed of a first rotor disc, a fixed stator disc and a friction layer, the first rotor disc and the fixed stator disc can rotate relatively, and sine electric signals corresponding to angle changes are output when the wrist bends and stretches based on the friction electrification effect. The speed detection mechanism generates a characteristic cycle electric signal related to the rotating speed through friction between a second rotor disc and a fixed electrode disc with a specific electrode; the pulse measuring ring is integrated on the inner side of the watchband, and the built-in flexible piezoelectric sensing module is tightly attached to the radial artery of the wrist, so that pulse fluctuation can be directly detected; the whole device does not need an external power supply, can generate sensing signals in a self-driven mode through mechanical friction and pulse pressure, and synchronously achieves simultaneous measurement of the wrist angle, the rotating speed and the pulse signals by means of a four-channel high-speed electrical measuring instrument and a multi-channel serial port circuit.

The invention discloses a variable-rigidity soft prosthetic hand and a using method thereof, and the variable-rigidity soft prosthetic hand comprises a soft simulated hand mechanical body which comprises a rigid-flexible coupling bionic finger group module and a palm module; the rigid-flexible coupling bionic finger set module comprises at least two fingers, and each finger is sequentially provided with a movement cavity and a rigid cavity in the direction from the hand back to the palm. The motion chamber is provided with a corrugated structure and is used for driving fingers to bend; the fiber reinforced layer covers the outer wall surface of the stiffness chamber and is used for adjusting the stiffness of the finger and generating a first direction thrust; one end of the palm module is connected with the rigid-flexible coupling bionic finger group module, and the other end is connected with a limb of a patient; and the pneumatic driving control system is packaged in an inner cavity of the palm module and is connected with an air path in the rigid-flexible coupling bionic finger group module. According to the scheme, the problems that an existing artificial limb is heavy, low in load capacity, high in reset delay and inconvenient to maintain are solved.

The present invention provides a joint mechanism and a prosthetic hand using it, in which the force required to move the support in one direction is relatively weak, and the force required to move the support in the other direction is relatively strong. [Solution] The joint mechanism has an elastically deformable elastic part surrounding the shaft and a support part connected to the elastic part. When the support part is displaced in one direction along the circumferential direction of the shaft, a first frictional force acts between the elastic part and the outer surface of the shaft. When the support part is displaced in the other direction along the circumferential direction of the shaft, a second frictional force acts between the elastic part and the outer surface of the shaft, and the first frictional force is greater than the second frictional force.

A prosthetic hand with a chassis (20) and at least one base element (10) for fastening a prosthetic finger to the chassis (20), wherein a longitudinal guide for the base element (10) is arranged or formed on the chassis (20), the base element (10) being mounted in said longitudinal guide, wherein the longitudinal guide blocks two translational degrees of freedom and a clamping element (30) is assigned to the longitudinal guide, said clamping element being displaceably mounted in or on the chassis (20) or the base element (10) between a locking position and an unlocking position and effecting a blocking of the third translational degree of freedom in the locking position.

A prosthetic hand 10 comprises wrist and palm parts 20, 30 that are rotatably coupled to form a wrist joint 50 with a transverse rotation axis 51, and a battery housing 40 through which the rotation a

The utility model relates to an anti-cutting glove practical training device. The device mainly comprises a cabinet body and a simulated cutting hand assembly, wherein the simulated cutting hand assembly is arranged in the cabinet body; wherein a transparent safety door is arranged on one side of the cabinet body; the simulation hand cutting assembly comprises a motor, a lead screw suite, a blade and at least two performance comparison gloves, the output end of the motor is connected with the lead screw suite, the blade is arranged on the lead screw suite through a connecting seat, the performance comparison gloves are arranged below the blade, and the performance comparison gloves are arranged on the lead screw suite. Each performance comparison glove is sleeved with an artificial hand; the blade, the performance comparison glove and the artificial hand are located in the visual range of the safety door. According to the utility model, the impression of safety education for sharp object cutting can be enhanced; and due to the arrangement of the safety door, the equipment does not cause actual harm to personnel, and safety risks existing in the education process are avoided.

1. Name of this design: Five-Finger Bionic Hand (Intelligent Dexterous Hand Type C). 2. Applications of this design: It can be used in humanoid robots as a dexterous end effector or actuator in industry; it can also be used in intelligent prosthetic hands for rehabilitation applications. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key features: the front view.

A rotatable and removable wrist connection for a prosthetic hand. A prosthesis coupling includes first and second ball race sections that may be moved together or apart to constrain ball bearings to an inner zone or an outer zone to allow the prosthesis coupling to be secured to or removed from a socket coupling. A socket coupling includes a socket body for receiving a wrist coupling having a rotary connector core extending from the socket body and compliantly mounted to the socket body.

Provided are: a link mechanism that is suitable for use in prosthetic hands and the like due to being low cost and having a simple structure; and a prosthetic hand using the same. A link mechanism comprises: a first joint part that includes a first link (110 (A)) and a second link (110 (B)) connected to the first link so as to be rotatable about a first base axis (AX1); a second joint part that is arranged side-by-side with the first joint part and includes a third link (110 (D)) and a fourth link (110 (E)) connected to the third link so as to be rotatable about a second base axis (AX2) which is different from the first base axis, wherein the third link is connected to the second link so as to be rotatable about a third base axis (AX3) which is different from the first base axis and the second base axis.

The invention relates to an automated hand, such as a prosthetic hand. In one form, the automated hand may be fluid compatible. In one form, the automated hand may comprise features to reduce the risk of harm to motors and / or other sensitive components of the hand when subject to an impact. In one form, the hand may comprise a wrist joint configured to allow the hand to curl and flex and / or to rotate. In one form, one or more digits of the hand may be individually controlled. In one form the hand may include a thumb rotation locking mechanism. In one form the hand may be provided with removable grip plates. In one form, the hand May be configured for use as a training hand.

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.

This invention discloses a wrist-driven, adaptive force-distribution semi-palm prosthetic hand with stepless self-locking function, comprising a finger module, a palm module, an interfinite force adaptive distribution module, a stepless self-locking module, and a wrist module. The finger module has rotatable knuckles and is fixedly connected to the palm module. The palm module has a stump receiving cavity and is rotatably connected to the wrist module. The wrist module has a wrist fixing component. The interfinite force adaptive module and the stepless self-locking module are respectively disposed on the palm module. The wrist module and the interfinite force adaptive distribution module are connected by a first rope, which cooperates with the stepless self-locking module. The interfinite force adaptive distribution module is connected to the finger module by a second rope. The stepless self-locking module is self-locking. The interfinite force adaptive distribution module has interconnected moving and rotating components. This invention can achieve adaptive gripping of the semi-palm prosthetic hand and achieve self-locking during gripping.

A prosthetic hand 10 comprises wrist and palm parts 20, 30 that are rotatably coupled to form a wrist joint. Rotation of the joint is lockable by selectively engaging a locking member 60 of the wrist

This invention belongs to the field of bionic hand technology and discloses a bionic prosthetic hand and its control method. The bionic prosthetic hand includes a hand body and a drive assembly. The hand body includes a palm and at least one first finger. The first finger includes multiple joint units, which are sequentially hinged around an axis in a first direction. One joint unit at the end is rotatably mounted on the palm around the axis in the first direction. The drive assembly includes a first drive unit and a connecting wire. The first drive unit is mounted on the palm, and the connecting wire is located between the palm and the multiple joint units. The multiple joint units on the palm collectively form a grasping state and an extended state. The bionic prosthetic hand of this invention not only reduces weight and volume, making it closer to the natural shape of the human hand, facilitating daily use and activities for the wearer, but also effectively reduces manufacturing costs and the difficulty of later maintenance.

To provide a low-cost, simple deformation mechanism and a prosthetic hand using the same. [Solution] The deformation mechanism comprises an elastically deformable support portion extending from a base end, a plurality of links connected in series, adjacent links being rotatably connected around a rotation axis intersecting the direction of the link arrangement, and an articulated portion arranged along the support portion, a holding portion that holds the articulated portion relative to the support portion, and an actuator that changes the length of the articulated portion from the base end in the extending direction.

This invention relates to the field of control engineering technology, and in particular to a tactile-based multi-functional shared control method for a prosthetic hand, comprising: S1, real-time acquisition of the user's surface electromyography (EMG) signals, and identification of the user's movement intention based on the EMG signals; S2, determination of the finger to be moved based on the user's movement intention, and judgment of the current availability of the finger to be moved by fingertip tactile readings, determining the movable finger and performing pre-grasping; S3, after pre-grasping, controlling the movable finger to perform stable grasping by calculating the rate of change of gripping force of each finger at adjacent moments; S4, after stable grasping, adjusting the gripping force level by executing a target activation gesture, thus completing the control of the prosthetic hand. This invention enables stable grasping of the prosthetic hand, as well as in-hand operation and multi-grasping control with one hand.

1. Name of the product in this design: Mechanical Prosthetic Hand. 2. Purpose of this design: As an assistive device for amputees. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The application discloses a damping device for a prosthetic hand, which comprises a base, a top cover, an inner cylinder, an elastic mechanism, a connecting seat and four damping rods. The top cover is fixedly installed at the open end of the base, so that the inner cylinder is limited in the base. The elastic mechanism is installed between the bottom of the inner cylinder and the bottom of the base. The bottom end surface of the connecting seat is in contact with the inner bottom surface of the inner cylinder, and the top end penetrates through the center hole of the top cover. The four damping rods are uniformly distributed along the circumference of the connecting seat and extend along the radial direction of the connecting seat. The inner end of the damping rod is in sliding fit with the connecting seat, the middle part penetrates through the cylinder wall of the inner cylinder, and the outer end is movably installed in the base along the axial direction of the base. A reset spring is sleeved on each damping rod, and the two ends of the reset spring are in abutment with the inner cylinder and the connecting seat. The damping device has the advantages of simple structure, easy installation and maintenance, and can effectively reduce the influence and harm of hand vibration on the user of the prosthetic hand, and further improve the accuracy of gesture recognition based on the electromyographic signal in the vibration environment.

A rotatable and removable wrist connection for a prosthetic hand. A prosthesis coupling includes first and second ball race sections that may be moved together or apart to constrain ball bearings to an inner zone or an outer zone to allow the prosthesis coupling to be secured to or removed from a socket coupling. A socket coupling includes a socket body for receiving a wrist coupling having a rotary connector core extending from the socket body and compliantly mounted to the socket body.