41 results about "Carpometacarpal joint" patented technology

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 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.

A glove worn within a conventional baseball mitt to protect the wrist and hand. The glove generally comprises a fitted glove of soft leather with a plurality of attached non-springy, shock absorbing cushions including a radioulnar cushion extending proximally one to three inches up the forearm from a first end at the wrist crease to a second end and in width a distance sufficient to cover the palmar side of the wrist, and a carpal cushion extending distally from the wrist crease a distance sufficient to cover the carpometacarpal joint of the hand and in width a distance sufficient to cover the carpometacarpal joint of all five digits, including the carpal cushion including a line of reduced padding, typically compressive stitching, extending from the first wrist crease edge to the distal edge which edge may be arcuate to provide additional protection and conform to the shape of the ball glove.

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.

An artificial implant for a carpometacarpal (CMC) joint used for replacing a CMC joint surface of the first metacarpal bone is provided and has: an insert portion having an inserting end for inserting into a bone marrow cavity exposed from an incision of the first metacarpal bone, and a front end; an articular replacement portion connected to the front end of the inserting portion and disposed outside the incision of the first metacarpal bone, and having an articular profile surface to replace the CMC joint surface of the first metacarpal bone; and an attached flange protruded from a peripheral of the articular replacement portion, attached to an outer bone surface of the first metacarpal bone adjacent to the incision, and having at least one suture hole, through which at least one suture passes for assisting to fix an abductor pollicis longus (APL) to the outer bone surface.

The invention relates to a carpometacarpal joint of the thumb of a bionic artificial hand. The carpometacarpal joint of the thumb of the bionic artificial hand is provided with a joint gear 6, and the axis position of the gear is made to correspond to the movement axis of a thumb carpometacarpal joint of a human hand. The thumb is driven by a micromotor 2 to rotate around the axis of the joint gear 6, so that the actions of opening and closing of the thumb are completed. A lateral rotating shaft 9 of the carpometacarpal joint of the thumb is fixed to the joint gear 6, and the axis of the lateral rotating shaft 9 and the axis of a thumb opening-closing shaft 7 perpendicularly intersect at the axis of the joint gear 6. The thumb is driven by another micromotor 12 to rotate in the side direction of the axis of the joint gear. The elevation angle of the lateral rotating shaft 9 of the thumb relative to a palm is equivalent to the elevation angle of the thumb relative to the palm when the human hand is relaxed. The functions, actions and appearance of the carpometacarpal joint of the thumb are closer to those of the human thumb, and the carpometacarpal joint of the thumb is simple and reliable in structure and good in practical effect.