105 results about "Interphalangeal Joint" patented technology

Intramedullary osteosynthesis implant, permitting in particular arthrodesis (1) of a joint, for example an interphalangeal joint, or diaphyseal osteosynthesis of the upper limb or of the lower limb, comprising two sets of at least two rods (2, 3, 4, 5) each extending on either side of a central zone (6), said rods (2, 3; 4, 5) being substantially parallel at ambient temperature within the same set, each set of rods being intended to be impacted in the medullary canal of a diaphysis, said implant being made from a shape-memory material so that, at body temperature, the rods (2, 3; 4, 5) of the same set spread apart so as to be able to immobilize themselves in said medullary canal.

Methods and apparatus for repair of toe deformities using a bioabsorbable pin. The apparatus is a kit of part comprising a bioabsorbable pin, a predrill, a bone tamp, a cutter and a forceps. One surgical method of repairing toe deformities includes resecting a proximal interphalangeal joint, drilling a hole in a proximal phalanx using a proximal portion of a pin, removing the pin from the proximal phalanx, drilling a tip of a toe through middle and distal phalanxes, driving the pin retrograde and traversing the distal, middle and proximal phalanxes until the pin stops advancing due to resistance at a proximal cortex, holding the pin and powering a pin driver to separate a distal portion of the pin, and suturing the wound.

Surgical techniques, instruments and systems for bone fusions and repairs (for example, phalangeal fusion) which allow alignment of small bones (for example, phalanges) without the use of guidewire and cannulated instrumentation such as, for example, drills and drivers, and cannulated screws. A drill/driver hybrid instrument (a combined drill/driver device) may be used in fusion of two small bones (for example, in interphalangeal fusion). One end of the hybrid instrument is provided with a plurality of flutes so that the instrument can be used as a drill to remove bone. The other end is shaped to mate with a device to be inserted intraarticularly (for example, interphalangeally), acting as a driver for that device.

Methods and apparatuses for digit joint arthroplasty. The present invention preferably allows for the treatment of disorders of digit joints generally and interphalageal joints more specifically. The present invention provides implants for the replacement of digit joint cartilage. The implants of the present invention preferably include a head and a shaft. The head may be shaped similarly to the cartilage that is being replaced. The shaft is adapted so as to be able to be fit into, for example, the phalanx. In certain preferred embodiments, the shaft is threaded so that it may gain purchase to the phalangeal cortex. The articulating portion of the implant preferably mimics the articular surface of the native phalanx and thereby places minimal motion restriction on the patient. The implants and methods of the present invention have particular utility with the DIP joint of the hand.

The invention discloses an identification and authentication device based on finger biometric. The device comprises a handle part, a fingerprint collection part, a light source, an image pickup part, a tact switch and a processing part. The processing part is respectively connected with the tact switch, the fingerprint collection part, the light source and the image pickup part. The device is usually in standby state, and a system starts to work when the tact switch is triggered: first, the light source is started to illuminate the position between the knuckle at a proximal interphalangeal joint of a finger and a distal interphalangeal joint of the finger, and the image pick-up part obtains a finger vein image; meanwhile, the fingerprint collection part collects a thumb fingerprint image, then the two images are subject to preprocessing and feature extraction respectively, and matched with the finger vein feature and the fingerprint feature stored in a database; finally, the judgment whether the authentication is successful is obtained by evaluating the similarity thereof. The invention fully utilizes two different biometrics at different cutaneous layers of the finger, can enhance the anti-counterfeiting property, the security and the accuracy of the system.

A humanoid electric hand includes a metacarpophalangeal joint and an interphalangeal joint. The interphalangeal joint bends or extends together with a bending or extending operation of the metacarpophalangeal joint, by linking a finger motor for driving a finger to a worm deceleration mechanism, an output gear of which moves rotationally to bend or extend the metacarpophalangeal joint, and by linking the metacarpophalangeal joint to the interphalangeal joint via a link mechanism.

Provided is a data glove which imparts little discomfort when worn, and is capable of accurately detecting movement of a hand, comprising: a glove main body; and a plurality of strain sensors which are disposed on the dorsal side of the glove main body in regions corresponding to at least one finger, and which detect stretch and contraction of the glove main body. The strain sensors preferably include a first strain sensor and a second strain sensor which are disposed on the dorsal side of the glove main body to correspond respectively to a proximal interphalangeal joint and a metacarpophalangeal joint of at least one finger of the second through fifth fingers, and which detect stretch and contraction of the glove main body in a proximal-distal direction. The data glove preferably further comprises a plurality of stretch prevention parts which limit the elongation of the glove main body.

An exoskeleton device for assisting the movement of a metacarpal-phalangeal joint of a hand in a flexion/extension plane Γ of the joint, including a metacarpal support arranged integrally with a metacarpal portion of the hand, a phalangeal support having means for fastening to a proximal phalanx, a kinematical chain between the metacarpal support and the phalangeal support arranged to provide and carry out a rotation of the phalangeal support with respect to the metacarpal support.

The invention relates to an exoskeletal thumb moving function rehabilitation robot. The robot comprises an execution part, a transmission part and a drive part, wherein the execution part is divided into an interphalangeal joint module, a metacarpophalangeal joint module and a carpometacarpal joint module; in the carpometacarpal joint module, a metacarpal seat is fixed on the palm and wrist of a patient; the metacarpal seat and a metacarpal seat connector form a dip angle of 30 degrees, and the metacarpal seat connector has an angle of 45 degrees; an angle sensor is fixedly connected to a joint horizontal rotor, and is fixedly connected with an abduction/adduction coil; an adjustable bearing block is fixedly connected with a size adjusting jack; one end of a palm driven rod and the adjusting bearing block form a rotating pair, and the other end of the palm driven rod and a palm drive rod form a rotating pair; and the palm drive rod is fixed on a palm drive shaft, and the drive shaft and a palm drive bearing block form a rotating pair. According to the exoskeletal thumb moving function rehabilitation robot, four degrees of freedom active and passive rehabilitation of the thumb can be realized, and the problem that the robot is difficult to wear due to the difference between the physiological structure of the thumb and the other four fingers can be solved.

The invention relates to a finger rehabilitation robot, in particular to an exoskeleton type wounded finger rehabilitation robot. The exoskeleton type wounded finger rehabilitation robot can solve the problems that an existing exoskeleton type wounded finger rehabilitation robot is large in labor intensity and long in rehabilitation time and cannot directly feed a rehabilitation effect back. A metacarpophalangeal joint unit of an index finger exoskeleton is fixed to a first spur gear at the front end of a drive module through a screw; a metacarpophalangeal joint unit of a middle finger exoskeleton is fixed to a second spur gear at the front end of the drive module through a screw; a metacarpophalangeal joint unit of a ring finger exoskeleton is fixed to a third spur gear at the front end of the drive module through a screw; a metacarpophalangeal joint unit of a little finger exoskeleton is fixed to a fourth spur gear at the front end of the drive module through a screw, three steel wires are respectively led out of a pulley block of an artificial muscle drive module, and the led-out ends of the three steel wires are sequentially connected with the a first pulley of a distal interphalangeal joint unit, a second pulley of a proximal interphalangeal joint unit and a third pulley of the metacarpophalangeal joint unit. The exoskeleton type wounded finger rehabilitation robot is applied to exoskeleton type wounded finger rehabilitation.

An artificial hand with multiple functions, no error operation and no complication is composed of such artificial units as finger bones, metacarpal bones, ulna, radius, muscle tendons, tendon sheaths, slide mechanism, muscles and skin. It can be connected to the crippled end of human radius by screw and its artificial muscle tendons can be linked with relative ones of human body by stitch.

The invention discloses a full-joint measurement type data glove. The data glove is connected with a manipulator or a computer end and comprises a glove body with two layer structures and a pluralityof bending degree sensors and a plurality of strain sensors, wherein the bending degree sensors and the strain sensors are located between the two layer structures. The bending degree sensors are arranged at metacarpophalangeal joints and interphalangeal joints at the glove body. The strain sensors are arranged at the metacarpophalangeal joints of the glove body. The bending degree sensors and thestrain sensors are used for obtaining the movement information of the fingers perpendicular to the palm and the fingers parallel to the palm. By means of the full-joint measurement type data glove, the longitudinal and transverse movement information of the fingers of an operator can be obtained, and the movement information is transmitted to the manipulator or the computer end; and in addition,the inner layer structure of the glove body is made of nitrile or rubber, the outer layer structure is made of cotton, and the full-joint measurement type data glove further has the advantages of being simple in wearing mode and low in maintenance difficulty.

The invention relates to a preparation method of a conductive thermoplastic starch polymer and a polymer-based humanoid soft finger with a folding paper structure, belongs to the technical field of humanoid fingers, and aims to solve the problems that in an existing humanoid soft finger with the variable rigidity realized by utilizing a thermal phase change material, the variable rigidity responsespeed is low due to long response time of conversion from a glass state to a high-elasticity state, and the joint motion flexibility and the rigidity of the humanoid soft finger cannot be realized atthe same time. The polymer-based humanoid soft finger comprises a finger root, a metacarpophalangeal joint, a proximal phalanx, an interphalangeal joint, a middle phalanx, a finger tip joint, a distal phalanx, a strain restraint layer, a variable rigidity layer, a cooling layer and a contact layer, wherein each joint is provided with a U-shaped groove, and the outer side of each joint is wrappedwith Yoshimura line type folding paper; and three self-made conductive thermoplastic starch polymer plates are arranged at the bottom of the finger. The humanoid soft finger not only can realize rapidand active control of the rigidity of the phalanxes, but also can realize synchronous and passive adjustment of joint flexible motion and joint rigidity, and has the advantages of fast variable rigidity, high adaptability and flexibility in motion.

The invention provides a glove having connected back and palmar portions for overlaying and protecting respective back and palm regions of a human hand, the back and palmar portions having distal and proximal ends with a plurality of digital segments projecting from the distal ends, where the digital segments overlay the proximal interphalangeal joints of the fingers of the hand and are open over the distal interphalangeal joints of the fingers, where the palmar portion comprises a padded region overlaying the base of the metacarpal bones of the hand, and where the glove comprises a padded region overlaying the length of the fifth metacarpal of the hand.

The present invention is based on providing, in order to correct or prevent a toe deformity, an orthotic toe sock (S) wherein a toe part (W) of the sock (S) comprises at least two toe-specific toe elements (1, 2, 3, 4, 5) arranged to receive adjacent toes. The adjacent toe elements are, in a corresponding space (I, II, Ill, IV) in between the toes, attached to one another over an area (A) extending, when the sock is being worn, from a base or from above the base, e.g. from a proximal interphalangeal joint region, of the toe in question, e.g. the second, third, fourth or fifth toe, to a tip of the toe or almost to the tip of the toe.

The invention, which belongs to the field of image processing, proposes a method for extracting a region of interest of a finger vein, thereby providing the reliability guarantee for follow-up fingervein feature extraction and recognition. To be specific, the invention provides a method for extracting a region of interest of a finger vein based on fusion of finger contour and gradient distribution. On the basis of the imaging principle of the finger vein and the characteristic of low absorption coefficient of the near-infrared light by the interphalangeal joint, the finger rotation and gradient distribution are corrected based on the finger contour and the interphalangeal joint position is located; and thus the region of interest having the vein information is extracted automatically. Themethod is mainly applied to the image processing occasion.

A finger weight that is functional. A normal sized, weighted sphere is attached to an end of a cylinder-shaped body. The weighted sphere and body has a hard particulate material to provide a resistance transfer through the body. A flattened surface and groove are provided in both the implement and the assistive implement. The flattened surface of the implement of the body half distant from the sphere is cinctured in the groove by an adhesive resinous strip to the non-palmar surface of the distal finger digit. The flattened surface along the entire length of the assistive implement is cinctured in the groove by an adhesive resinous strip to the proximal interphalangeal joint. The operation of the finger weight is extending and flexing the distal finger digit while restricting the extending and flexing of the proximal interphalangeal joint.

A hand exoskeleton device is provided having at least three robotic units. One is for attachment to the thumb and has two elements for attachment to the distal and proximal phalanges. The other two each have three elements, for attachment to the distal, middle and proximal phalanges of the index and middle fingers. The elements of each robotic unit are interconnected by suitable hardware to provide for relative angular movement of the elements about an axis of rotation that corresponds substantially to the axis of rotation of a user's interphalangeal joint movement. An actuator is associated with the interconnecting hardware to enable adjustment of the two elements in each of two opposite directions. A sensor senses the angular position or force of one element relative to the other element of each pair. A computerized controller controls movement of the elements of each pair by means of the associated actuator.

The invention relates to a human-simulated finger, in particular to a human-simulated finger with a base joint and an interphalangeal joint respectively and independently driven.A near joint and a far joint in an existing human-simulated finger cannot respectively and independently move, finger action implementation has limitation, and the flexicity of the human hand cannot completely reproduced.A first pulley of a near knuckle in the human-simulated finger is fixedly arranged in a shell for the near knuckle, one end of a first steel wire is fixedly connected to a palm part, and the other end of the first steel wire goes around the base joint to be fixedly connected to the first pulley.A middle knuckle comprises a shell for the middle knuckle, the interphalangeal joint, an interphalangeal joint potentiometer, a second pulley, a steel wire sleeve and a second steel wire.A far knuckle is arranged at the end, away from the near knuckle, of the middle knuckle.The second pulley is fixedly installed in the shell for the middle knuckle, one end of the second steel wire is arranged on the palm part, the other end of the second steel wire penetrates through the steel wire sleeve to be fixedly connected to the second pulley, and the far knuckle is connected with the shell for the near knuckle in the near knuckle through a four-bar mechanism.The human-simulated finger is used for a robot.

The technical features of the Multi MIT are the retractable finger points on and/or near the metacarpo-interphalangeal joint on the middle, index and thumb fingers. On the dorsal side of the glove, are magnets that are sewn between the insulated material and the outer fabric which connect when the finger caps are retracted. The finger caps are held back by a positive and a negative magnet on the dorsal side of the glove that firmly holds the finger caps in place. The retracted caps access the inner spandex fleece glove that has touch screen material patches on the tips of the middle, index, and thumb fingers on the palmer side of the inner glove. The inner glove is designed to give the wearer fingertip sensory reception, dexterity and allow touch screen capabilities while providing mild fingertip protection with the finger caps retracted.