242 results about "Metacarpal bones" patented technology

The concepts disclosed herein offer a new simple and reliable reconstructive option for the treatment of first carpal-metacarpal joint (basal joint) arthritis and consists of an intra-articular basal joint stabilizer sling combined with a surgical method of implantation.

A spacer for implantation into a subject is provided that includes a sterilized piece of cartilaginous allograft tissue. The piece forms a Y-shape with a base adapted to insert within a first carpo-metacarpal joint or carpo-metatarsal joint of the subject, and has a first arm adapted to secure to a trapezium bone adjoining the joint, and a second arm adapted to secure to a proximal metacarpal or metatarsal bone adjoining the joint. A procedure for implanting the spacer includes exposing a target joint and abrading a bone surface interior to the joint to induce surface bleeding. The spacer base is then inserted into the joint. The spacer first arm is adhered to the first bone of the joint and the spacer second arm is adhered to the second bone of the joint. A kit is also provided for surgical implantation of the spacer.

A sock used in pilates includes a medial support about an arch portion of the sock, a side support member extending longitudinally along a lateral edge, a metacarpal support member, a reinforcement member extending from a heel portion to the metacarpal support member, and a plurality of raised bumps strategically located on a lower surface to provide tactile response to weight shift and pressure due to posture that can be used to correct or adjust posture during pilates exercises.

The implant includes a stem terminating in a head. The stem is adapted to be inserted in the metacarpus of the thumb and the head to be disposed in a space obtained particularly by removing at least a portion of the trapezium. The surface of the head is constituted by a base connected to the stem and adapted to rest on the proximal end of the metacarpus, a distal surface portion opposite the base and serving as a contact surface with the bone located facing the proximal end of the metacarpus, and a connecting portion connecting the base and the distal surface portion of the head. The distal surface portion of the head is inclined relative to a longitudinal axis of the stem by a predetermined angle, such that, when the stem is mounted straight in the metacarpus, the distal surface portion of the head can be located in varus.

A carpometacarpal joint replacement system for replacing the trapezium bone in the hand is provided. The system includes a trapezial implant for the carpometacarpal joint resulting in replacement of the carpal trapezium bone with a prosthesis having the same anatomical configuration as the trapezium bone. The implant device comprises a plurality of concave surfaces, with the plurality of concave surfaces articulating with the carpal and metacarpal bones.

The implant comprises a stem (10) terminating in a head (20). The stem is adapted to be inserted in the metacarpus of the thumb and the head to be disposed in a space obtained particularly by removing at least a portion of the trapezium. The surface of the head is constituted by a base (201) connected to the stem and adapted to rest on the proximal end of the metacarpus, a distal surface portion (202) opposite the base and serving as a contact surface with the bone located facing the proximal end of the metacarpus, and a connecting portion (203) connecting the base and the distal surface portion of the head. The distal surface portion (202) of the head is inclined relative to a longitudinal axis (104) of the stem by a predetermined angle (α), such that, when the stem (10) is mounted straight in the metacarpus, the distal surface portion (202) of the head can be located in varus.

Drive device (1) for a finger prosthesis (2) of substantially natural size designed to bend the finger prosthesis (2) about a shaft (A) relative to a fixing (3) e.g. in a human or artificial metacarpus (4). The drive device (1) comprises a motor (6) which can be connected to an energy source e.g. a battery, and a transmission (5, 7, 8) intended to transform a force from the motor (6) to the finger prosthesis (2) to perform the movement. The motor (6) and transmission (5, 7, 8) are placed in the finger prosthesis (2) so that the bending shaft (A) is contained in the finger prosthesis (2) or in its extension at the fixing (3).

A sock used in pilates includes a medial support about an arch portion of the sock, a side support member extending longitudinally along a lateral edge, a metacarpal support member, a reinforcement member extending from a heel portion to the metacarpal support member, and a plurality of raised bumps strategically located on a lower surface to provide tactile response to weight shift and pressure due to posture that can be used to correct or adjust posture during pilates exercises.

An interpositional biarticular disk implant (11) having a circular peripheral rim, a generally toroidal axial center opening (13) and convex upper and lower surfaces (15, 17) is implanted between resected concave surfaces of the metacarpal base and the trapezium or other carpal bone in a CMC joint replacement. The disk (11) is anchored in operative position through the use of a flexable cond, such as a harvested tendon that passes through the center opening (13) and through osseous passageways created in the two facing bones.

A button and attached suture loop for CMC repair. A suture strand is threaded through holes in the button to attach the button to the suture. The suture ends are then brought together (by being swaged, spliced or cinched together, for example) to form the suture loop comprising a continuous, uninterrupted suture loop with a single strand of swaged-together ends. The swaged-together ends are attached to a suture passing instrument such as a K-wire (Kirschner wire) that is also used to drill a hole through adjoining metacarpals (for example, the first and second metacarpals). The swaged-together ends of the suture are then passed through the drill holes in the first and second metacarpals, and the ends of the suture are pulled until the button abuts one of the first and second metacarpals. A second button is used to secure the cut suture ends to the other metacarpal.

A protective glove is disclosed having a flexible liner conforming to the shape of a hand and wrist and having a plurality of rigid guards secured thereto over the distal, middle, and proximal phalanx bones, the metacarpals, and wrist bones of the wearer. A distal guard is shaped as a cup placed over the posterior side of the distal phalanx bone. Middle and proximal guards protect the middle and proximal phalanx bones of the hand and may be embodied as rings positioned slightly distal of the finger joints and having extensions extending distally therefrom. A metacarpal guard secures to the posterior of the glove over the metacarpals and extends toward the anterior of the hand, providing a cutout to receive the thumb. A wrist guard encircles the liner over the wrist bones and is spaced apart from the metacarpal guard to permit wrist articulation.

A work glove particularly useful for gardening, automobile mechanical work and any other type of use which brings the palmar side of the hand in contact with work or the like which may result in stinging, bruising, or blistering of the fingers, thumb and palm of a human hand is provided with protective padding disclosed or positioned for overlying at least the distal halves of the index finger and long finger metacarpals excluding the metacarpalphalangeal joints of the index finger and the long finger. Preferably, the glove also includes protective padding disposed along a thumb stall of the glove at a location adapted to be along an ulnar border as well as the A2 pulleys of the thumb's proximal phalanx between the metacarpalphalangeal joint and the interphalangeal joint.

The implant includes a stem terminating in a head. The stem is adapted to be inserted in the metacarpus of the thumb and the head to be disposed in a space obtained particularly by removing at least a portion of the trapezium. The surface of the head is constituted by a base connected to the stem and adapted to rest on the proximal end of the metacarpus, a distal surface portion opposite the base and serving as a contact surface with the bone located facing the proximal end of the metacarpus, and a connecting portion connecting the base and the distal surface portion of the head. The distal surface portion of the head is inclined relative to a longitudinal axis of the stem by a predetermined angle, such that, when the stem is mounted straight in the metacarpus, the distal surface portion of the head can be located in varus.

The invention relates to a gripping device, such as an automated hand, comprising a plurality of metacarpal members, each metacarpal member having a first end attached to a support frame via a universal joint and having a second end attached to a gripping member, wherein the metacarpal members are able to pivot upwardly, downwardly and laterally. Where adjacent metacarpal members together form a palm of the hand, the ability of the metacarpal members to move up, down and laterally helps the palm to grip an object and also helps the palm to withstand at least some forces from above, below and from the side.

An implant for the trapezium of the thumb carpometacarpal (CMC) joint comprising an integral elastomeric member configured to include a body portion having a tapered neck, having extending from one end thereof an elongated, longitudinally extending tapered portion adapted to be embedded into a reamed out-channel in the thumb metacarpal bone. After implantation, in the preferred embodiment of the method according to the invention, a segment of a nearby tendon, for example, the APL or FCR tendons, may be wrapped around the tapered neck of the implant to secure it in position, thereby forming a reinforced structure to inhibit dislocation of the prosthesis. However, in other methods, various other securing elements, including, but not limited to acellular matrices, may be used to retain the implant in position.

A first carpometacarpal joint implant. One embodiment of the invention includes proximal and distal components. The proximal component includes a fixation portion for attachment to one or more elements of a patient's distal carpal row, a ball-type joint portion cantilevered off the fixation portion, and a skid having a concave surface opposite the ball-type joint for engaging a patient's scaphoid bone. The distal component has a fixation portion for attachment to a patient's thumb metacarpal, and a socket-type joint portion that cooperates with the ball-type joint portion of the proximal component.

This present invention concerns a trapezian or trapezo-metacarpal implant (1) that includes a rod (2) and a head (3) that are respectively intended to be inserted into the metacarpus (4) of the thumb, and to be anchored in a space that is created in particular by removing at least a portion of the trapezius (5). According to the invention, the rod (2) and the head (3) of the implant are independent of each other, and are designed to fit together with each other at least at one end (2a) of the rod, through the use of complementary connecting means (6, 34) allowing movement of the head with at least one degree of freedom in rotation, in relation to the rod and the said head (3), including rotation means (32) in the said space obtained by removing at least a portion of the trapezius (5).

A fracture fixation system particularly useful for bones of the hand and foot is disclosed. The system uses curved shape-memory alloy (e.g., Nitinol) wires that have a predetermined radius of curvature to accommodate different sized bones. These shape-memory alloy wire forms can be inserted into phalanx, metacarpal or metatarsal bones via a percutaneous technique. The technique uses small skin incisions; a specialized drill guide that has holding K-wires to maintain fixation of the drill guide to the bone so that it does not lose the insertion point; a specialized drill as well as a specialized wire cutter and advancement tool to make sure that the level of the wire is below the level of the outer cortical bone. Shape-memory alloy (e.g., Nitinol) based wires with a pre-bent curve have an advantage over the typical standard K-wire in that they can spring back to their predetermined memory shape when inserted into the intramedullary canal of the bone and heated, i.e., a more aggressive curve. By increasing their bending or flexion to increase the arc of curvature, this allows fixation points for the wire, essentially locking it to bone.

The invention relates to a finger motor function rehabilitation robot comprising an executing part and a driving part which are connected by steel wire rope outer sleeves (5a, 5b, 5c and 5d), wherein the executing part is divided into a palm bone joint module (2), a near-end joint module (3) and a far-end joint module (4); and the driving part is divided into four independent driving modules (1a, 1b, 1c and 1d) to drive the executing part. Because the whole system realizes far distance and variable distance transmission though steel wire ropes, the hands of people can arbitrarily move in a certain range in a rehabilitation process. The invention has the advantages that each joint of fingers is singly driven in a bidirectional mode; the robot has mechanical position-limiting function and can regulate the maximal rotating range of each finger joint to satisfy the requirement of different motion ranges of a patient in different rehabilitation periods; and the robot is suitable for hands with different sizes to wear in a certain range, and the hands can arbitrarily move in a certain range.

A batting glove particularly for baseball and softball includes padding along the palmar side of at least the proximal ends of the metacarpals of the ring finger and the small finger. Padding is absent over the hook of the hamate and preferably the carpometacarpal joints of the ring finger and the small finger.

A wrist fusion plate has a proximal portion comprising at least one opening, wherein the proximal portion attaches to the radius by inserting bone screws through the proximal portion opening. A distal plate portion has a plurality of openings and is adapted to be attached to a metacarpal (M) by inserting bone screws through the distal portion attachment openings and into the metacarpal. A central plate portion has at least one attachment opening and is adapted to be attached to a carpal bone by inserting bone screws through the attachment opening. The proximal and distal portions are aligned along a longitudinal axis of the wrist fusion plate. One of the distal portion attachment openings is elongated in a direction perpendicular to the longitudinal axis.

A glove includes two “H” shaped stiffening battens on a dorsal side. The battens terminate on a proximal side of the second through fifth fingers, and are formed from a non-rigid material. A one-piece protective panel is attached to the palmar side of the glove. The protective panel covers portions of the wearing hand palm corresponding to the distal ends of the second through fifth metacarpal bones, as well as palmar side portions of the second through fifth digits corresponding to the second through fifth proximal phalanx bones. Flex notch cut-outs in the protective panel correspond to portions of the palmar region which tend to bunch during gripping of a bar or other object and help prevent discomfort during such gripping.

A wrist fusion plate has a proximal portion comprising at least one opening, wherein the proximal portion attaches to the radius by inserting bone screws through the proximal portion opening. A distal plate portion has a plurality of openings and is adapted to be attached to a metacarpal (M) by inserting bone screws through the distal portion attachment openings and into the metacarpal. A central plate portion has at least one attachment opening and is adapted to be attached to a carpal bone by inserting bone screws through the attachment opening. The proximal and distal portions are aligned along a longitudinal axis of the wrist fusion plate. One of the distal portion attachment openings is elongated in a direction perpendicular to the longitudinal axis.

A device and method for stabilizing a broken bone while it heals is disclosed. The device is preferably a metal rod that has a threaded portion. The device is positioned into a bone, such as a metacarpal bone, by forming an opening in the bone suitable for receiving the device, and inserting it into the opening wherein the threaded portion retains the device in position.

The invention relates to an exoskeleton type finger motion function rehabilitation robot which comprises an executing part, a distal and proximal end joint driving part and a metacarpus joint driving part. The distal and proximal end joint driving part and the metacarpus joint driving part are independent to each other; separately bidirectional drive of the executing part is realized through a steel wire; the executing part comprises a distal end joint module, a proximal end joint module and a metacarpus joint module; the modules are connected with a driving bearing seat through sliding grooves of movable bearing seats, and the distances among the modules can be adjusted through the sliding grooves on the movable bearing seats to adapt to patients with different sizes; both the distal and proximal end joint driving part and the metacarpus joint driving part mainly comprise motors with encoders, spiral wheels, ratio wheels, driving wheels and fixed frames. The robot can carry out separately bidirectional drive for each joint of a finger; the executing part can be adjusted in length for being worn by people with different sizes in a certain range; and the robot has mechanical limit.

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 a gripping device, such as an automated hand, comprising a plurality of metacarpal members, each metacarpal member having a first end attached to a support frame via a universal joint and having a second end attached to a gripping member, wherein the metacarpal members are able to pivot upwardly, downwardly and laterally. Where adjacent metacarpal members together form a palm of the hand, the ability of the metacarpal members to move up, down and laterally helps the palm to grip an object and also helps the palm to withstand at least some forces from above, below and from the side.

A hand guard is disclosed having impermeable protection features and allowing skin contact on the pads of the fingers and thumb on a sensing hand. The first foil is a metacarpal guard shaped to cover the metacarpals and wrap around to cover a portion of the palm and thenar web space and having a fastener to fasten the first foil to itself. The digit guards include a thumb guard. Each digit guard is shaped like an elongated, hemispherical, cupped foil with contours to fit in overlying position for covering the dorsal and lateral portions of the thumb extending over a portion of both phalanges of the thumb. The digit guards are linked to the metacarpal guard, and each contain fasteners to retain the digits against the digit guards.

An exercise glove for intrinsic muscles and method of use. The exercise glove incorporates rigid ribs having rib distal end angles corresponding to patient metacarpal phalangeal joint angles. The ribs passively hold the patient metacarpal phalangeal joint angles in extension, while the patient actively flexes the proximal interphalangeal joints and distal interphalangeal joints to obtaining optimal intrinsic muscle stretching. The rib distal end angles may be set by a physical therapist to correspond to individual patient metacarpal phalangeal joint angles, or alternately an array of ribs of different rib distal end angles may be provided with the exercise glove, from which rib assortment the physical therapist may choose ribs having appropriate rib distal end angles ribs to attach to the exercise glove. The method includes the steps of using the exercise glove to passively hold metacarpal phalangeal joints in extension, while actively flexing proximal and distal interphalangeal joints.