64 results about "Middle phalanx" patented technology

A method and apparatus for correcting malformed joints, in particular the “hammer toe” contraction of the proximal interphalangeal joint. The disclosure comprises a two-component implant: a proximal phalanx component and a middle phalanx component. An endosseous stem on each component is inserted axially into the end of a respective host bone and, after insertion, the components are attached. The attached components are held together in various ways, for example a detent arm / aperture mechanism. Each component can be cannulated to allow for the passage of a kirschner wire, if necessary, to stabilize adjacent joints such as the proximal interphalangeal joint. The bones of the treated joint can be set to form a desired angle by adjusting the angle formed by the corresponding endosseous stems.

A method for fixation of a fracture of a bone having an intramedullary canal. An intramedullary rod is inserted into the intramedullary canal of the bone, wherein the intramedullary rod includes at least one proximal hole and at least one distal hole. Proximal and distal screws or pegs are inserted through the bone and through the proximal and distal holes in the rod, wherein the proximal and the distal screws or pegs are headless screws or pegs and are selected to have a size and are inserted through the proximal and distal holes in the rod such that the screws or pegs do not extend substantially beyond an exterior surface of the bone. Further described are apparatus and a kit for intramedullary fixation of fractures of bones of the hand. The methods, apparatus and kits of the invention are advantageously designed for percutaneous placement of intramedullary rods into the intramedullary canal of metacarpal or phalanx bones of the hand to stabilize fractures, and in particular in the proximal or middle phalanx bones of the hand. Rotational control is provided by locking screws or pegs through the rod, also placed percutaneously. Specific alignment jigs, drills, screw drivers and equipment may be used for placement of the rod and screws, wherein the rod and screws will stabilize the fracture.

The invention belongs to the technical field of robots, and relates to a finger structure and a robot. In the finger structure, a proximal phalanx shell, a middle phalanx shell, a distal phalanx shelland a connecting rod form a four-rod mechanism, the proximal phalanx shell serves as a fixing frame, a driving assembly drives the middle phalanx shell to swing, the distal phalanx shell is in linkage with the connecting rod, the distal phalanx shell swings in the swinging direction of the middle phalanx shell, and the finger structure is integrally bent and straightened. The connecting rod is arranged to be a first bent section, and a notch of the first bent section faces the back face of the middle phalanx shell. When the finger structure is straightened, namely the distal phalanx shell isflush with the middle phalanx shell, the inner wall of the first near end at a distal phalanx opening extends into the bottom of the notch of the first bent section, so that the inner wall of the first near end can be closer to the center of the distal phalanx opening. The far finger opening of the finger structure can be manufactured to be small, and the integrity of the appearance of the distalphalanx shell is improved. Due to the existence of the first bent section of the connecting rod, when the distal phalanx shell is impacted, the connecting rod shows certain elasticity and absorbs theimpact.

A protective hand covering has a membrane to cover the palm surface of the hand, leaving the small finger exposed and having first, second, and third extended finger portions over palm surfaces of proximal and middle phalanges of ring, middle, index fingers, and having an extended thumb portion extending onto the palm side of the proximal phalanx of the thumb. A loop accepts the thumb and secures an edge of the extended thumb portion against the base of the thumb. Elastic bindings along edges of the finger portions of the membrane define holes for ring, middle, and index fingers. The elastic bindings urge the first, second, and third extended finger portions against palm side surfaces of proximal and middle phalanges of ring, middle, and index fingers. A cross strap extends across the dorsal side of the hand for releasable elastic tensioning.

A finger suffering from contracture of the proximal interphalangeal (PIP) joint is treated by application of a device that includes two pivotally joined sections, one of which is securable to the middle phalanx of the finger and the other to another portion of the patient's finger, hand or wrist, with an element that applies torque to the sections. The pivot axis of the two sections is dorsal to the finger, and the torque-producing element and the pivot axis define a moment arm whose length varies in inverse relation to the tension applied to the tensioning element. Torque is applied to the PIP joint without a functionally significant torque being applied to the metacarpal phalangeal (MP) joint, and the device requires attachment only to the dorsal aspect of the phalanx that is distal to the joint being treated rather than to both the distal phalanx and the proximal phalanx.