115 results about "Radius bone" patented technology

A system for the internal fixation of a fractured bone of an elbow joint of a patient includes at least one bone plate, each bone plate having a plurality of holes and generally configured to fit an anatomical surface of the fractured bone. The at least one plate is adapted to be customized to the shape of a patient's bone. The system also includes a plurality of fasteners including at least one locking fastener for attaching the bone plate to the bone. At least one of the holes is a threaded hole. Guides for plate benders, drills, and / or K-wires can be pre-assembled to the threaded holes, and the locking fastener can lock into any of the threaded holes after the guides are removed.

A total elbow arthroplasty system, incorporating a humeral component, a radial component and a ball component, may be used as a total elbow replacement in the canine, as well as in other species. The implant of the present invention has an isometric humeral component and an isometric radial component. An isometric ball component having an isometric articular surface is mounted on the radial component. The humeral and radial components have stems for mounting in the medullary canals of the respective bones, which are angled so as to approximate the configuration of the original humerus and radius. The components work together to form a nonconstrained ball and socket joint. The invention is also directed to methods for implanting the novel endoprosthesis of the present invention in a canine elbow joint. The apparatus and methods of the present invention are useful in the treatment of elbow osteoarthritis in canines, as well as in other species, including other quadrupeds and humans.

The fixator is an apparatus for repairing fractures of the distal radius and wrist. Distal, pivot, distraction, and radial members provide an anatomically contoured, radiolucent apparatus that permits the wrist to move through a substantially normal range of motion. A means for distraction of the bones by the fixator is also provided. The fixator may be affixed to the lower arm and hand by spaced-apart elongate distal mounting pins with lower ends adapted or mounting in the metacarpal bone and by spaced-apart elongate radial mounting pins with lower ends adapted for mounting in the radius.

Disclosed is a device for total wrist fusion that includes (a) a first section, which is preferably a plate, that is positioned under the skin on top of the forearm, wrist and potentially part of the hand and connected to one or more of the radius or carpal bones, (b) a second section, which is preferably in the shape of an awl and is received in the cannula of the third metacarpal bone. Optionally, an anti-rotational third section may be included, which can connect to the top of the third metacarpal bone.

The present invention consists of a new and unique ergonomic handgrip with separate ulnar and radial support means that divides the pressure between the heel of the hand and the thumb area along with removing the pressure in the central palmer crease at the joining of the wrist. This is accomplished by using a dog-bone shape with an ulnar or heel support area having a cavity conforming to the shape of the heel of the hand and a radial or thumb support with a cavity conforming to the shape of the thumb of the hand where it joins the wrist. The ulnar or heel support and the radial or thumb support are angled so as to keep the wrist in a neutral position in relation to the device and are divided by a median groove that blends up into the gripping area of the device. The median groove maintains a space between the device and the carpel tunnel or central palmer area of the hand. By adapting the conventional computer mouse to the shape of the ergonomic handgrip with separate ulnar and radial support means, some or all of the wrist pain can be eliminated.

The juxta-articular stabilisation system constitutes of a plate with integral pin and tail part, a plate specific jig, a plate and jig specific drill sleeve, a plate positioner, a slotted head screw, a pin bender, screws and pins.This system can be used for fixation of most types of fractures involving the juxta-articular radius. The plate has a most juxta-articular row of screw holes in individually bendable and detachable extensions especially designed for very distal fractures or the volar lip fractures. The plate and jig assembly have plate positioning apertures in its juxta-articular part to allow adjustment in position of plate in longitudinal, transverse and oblique directions after temporary fixation to the juxta-articular fragment with a pin prior to fixation to diaphyseal fragment. This allows a very precise placement of the plate in the most desirable position. The drill guiding jig can be assembled to the plate prior to surgery thus reducing surgical step and time. The specific orientation of the screws holes in the diaphyseal part of the plate orientates the screws such that when tendons apply forces across the fracture, the plate is wedged between screw and the bone rather than pushed away from the bone. Therefore, more aggressive physical therapy can be commenced earlier and plates with fewer screws in the proximal part can be used without compromising the strength of the fixation. The plate also has bendable and dividable pin part and tail parts on either ends that allows the plate to be used with a chuck or power tool as a pin or drill bit and also have longer purchase into the bone with minimal soft tissue exposure.

System, including methods and apparatus, for replacing an end of a bone, such as a radial bone, with a prosthesis. In exemplary embodiments, the prosthesis is a radial head prosthesis having a stem portion and a head portion. The head portion may be configured to be (a) placed onto the stem portion by movement of the head and stem portions relative to one another transverse to a longitudinal axis of the stem portion, and then (b) rotated with respect to the stem portion to produce friction that firmly attaches the head portion to the stem portion.

The invention relates to a distal radius palmaris locking plate. The plate comprises a main locking plate body which is matched with the radius, the main locking plate body comprises a distal radius fixing part and a branch part which are connected with each other, a protruding strip is arranged on the portion, close to the radius, at the edge of the left end of the distal radius fixing part, andthe edge of the upper portion of the distal radius fixing part is subjected to ultra-thin design; the main locking plate body is made of a PEEK composite material, and the distal radius palmaris locking plate is stable in structure, capable of not being loosened during use and good in compatibility with the skeleton of the human body.

The invention provides a cun, guan and chi identification method, terminal and system, a medium and computer equipment. The method comprises the steps of obtaining a thermal imaging image of a human wrist, and determining a first mark point corresponding to the radial styloid process of the wrist based on the thermal imaging image; extracting edge contour information between the radial styloid process and the palm and on the two sides of the wrist; determining a wrist cross grain trend straight line based on the edge contour information; acquiring a vertical distance between the first mark point and the wrist cross grain, and determining an inch position abscissa and a ruler position abscissa based on the vertical distance and the first mark point; extracting a radial artery image, and fitting the radial artery image into a linear function; on the basis of the linear function, the horizontal coordinate of the guan position, the horizontal coordinate of the chi position and the horizontal coordinate of the cun position, determining the longitudinal coordinate of the guan position, the horizontal coordinate of the chi position and the longitudinal coordinate of the cun position. therefore, the cun, the guan and the chi are positioned only by using the wrist thermal imaging image and the traditional Chinese medicine one-body cun principle, signal interference is avoided, human subjective interference factors are eliminated, and the positioning precision of the cun, the guan and the chi is ensured.

The invention provides a wrist joint prosthesis. The wrist joint prosthesis comprises a carpal prosthesis and a radius prosthesis, wherein the carpal prosthesis is provided with a first curved surface, the radius prosthesis is provided with a second curved surface matched with the first curved surface in shape, and the carpal prosthesis and the radius prosthesis are connected in an abutting mode in the first direction through the first curved surface and the second curved surface. The carpal prosthesis is configured to be rotatable relative to the radius prosthesis around a second direction and a third direction which are perpendicular to the first direction, and one end used for being connected with carpal, of the carpal prosthesis is rotatable relative to one end used for being connectedwith the radius, of the radius prosthesis around the first direction. According to the configuration, one end used for being connected with carpal, of the wrist joint prosthesis is configured to rotate around the first direction relative to one end used for being connected with the carpal, of the radius prosthesis, so that the wrist joint prosthesis can achieve the circling motion function of a radial wrist joint, the wrist joint mobility of a patient is improved, and the satisfaction degree of the patient is increased.

The invention provides a distal radioulnar joint reduction fixation plate, and belongs to the field of internal fixation instruments for clinical medicine orthopedic operations. The distal radioulnar joint reduction fixation plate comprises an ulna hook and a radius fixing portion, wherein the ulna hook surrounds the periphery of an ulna and is used for hooking the ulna, the radius fixing portion is used for fixing a radius, and the ulna hook and the radius fixing portion are positioned at two ends of the distal radioulnar joint reduction fixation plate respectively. The distal radioulnar joint reduction fixation plate is fixed onto the radius through the radius fixing portion, the ulna is hooked by the ulna hook, reduction effects can be enhanced, the shortcoming of loosening caused by suture is overcome, reduction of the movement range of a distal radioulnar joint and complications of synostosis caused by ulna and radius steel needle fixation are avoided, reduction can be reliable by the aid of the distal radioulnar joint reduction fixation plate, rotation of the distal radioulnar joint is limited, natural healing of a distal radioulnar joint ligament or / and a joint capsule is facilitated, surgical effects are improved, and the complications are decreased.

The invention discloses an ulna and radius resetting device for an orthopedic surgery. The device comprises a rectangular forearm support plate and a palm traction torsion mechanism, the forearm supporting plate is located on one side of an operating bed, one end, close to the operating bed, of the forearm supporting plate is connected with the operating bed through a connecting arm, a palm traction torsion mechanism is installed at the other end of the forearm supporting plate, a palm of a patient is fixed to the palm traction torsion mechanism, a forearm is placed on the forearm supporting plate, and a forearm binding belt corresponding to the near end of the forearm of the patient is arranged on the forearm supporting plate. The forearm supporting plate is used for fixing the forearm ofthe patient; the distal radius ulna position and posture are adjusted through the palm traction torsion mechanism, broken bone reduction is achieved, the requirements of auxiliary personnel are reduced, the surgical operation space is saved, the influence of human factors on the stability of the arm of the patient is eliminated, the reduction effect is guaranteed, and therefore the surgical quality and the surgical efficiency are improved.

The invention provides a distal radius personalized artificial prosthesis. The distal radius personalized artificial prosthesis comprises a core column composed of a core column solid part and a corecolumn porous part, wherein the core column solid part comprises a core column solid part far end, a core column solid part collar part and a core column solid part intramedullary nail; the hollow conical core column porous part is arranged at the outer side of the core column solid part intramedullary nail and wrapped by remaining radius; and an outer sleeve with a same geometrical shape as cut-off radius is arranged at the outer side of the core column solid part far end. By adoption of a combined structural design, the outer sleeve and the cut-off radius are the same in geometrical shape; good contact between the outer sleeve and bone joint surface is guaranteed; stress shielding and bone abrasion are relieved; and the probability of postoperative fracture is reduced.

The present invention relates to a device for internal fixation of the bone fragments (2, 3) in a radius fracture (4). The device comprises at least one body (1) for abutment against the bone fragments (2, 3) in the radius fracture (4), and fixing elements (6, 7) which are intended to be locked to the body for fixation of said bone fragments. The body (1) itself has in a distal end portion (1a) at least two predrilled holes (8) for fixing elements (6), and in a proximal end portion (1b) at least two predrilled holes (9) for fixing elements (7). To allow effective optimum internal fixation of the bone fragments in the radius fracture, the predrilled holes (8, 9) run obliquely relative to a longitudinal axis (L) of the body (1) so that all of the fixing elements (6, 7) which, after the body has been caused to abut against the bone fragments (2, 3) in the radius fracture (4), are introduced into said bone fragments through holes (8, 9) in the body's distal end portion (1a) and proximal end portion (1b) cross the radius fracture (4) as viewed in the transverse direction of the body. Each fixing element (6, 7) has at least one fixing portion (10; 10a, 10b) for locking the fixing element in the bone fragments (2, 3) in the radius fracture (4) and for locking the fixing element to the body (1).

The present invention relates to a device and system for fixation of intra-articular and extra-articular fractures and non-unions of small bones and other small bone fragments, and more particularly to a threaded nail with a robust length and a trailing end with a cutting tip and longitudinal cutting flutes and a stepped diameter with cutting flutes at the transition point, and an optional cannulation along the central longitudinal axis of the nail.

The invention discloses an intramedullary fixing device for radial head fractures. The intramedullary fixing device comprises a core rod sleeved with a radius main body bone cavity, a rod body of thecore rod is provided with a core rod fixing hole and is fixed to the corresponding position in the radius main body bone cavity through a core rod fixing lead screw, and the outer end of the core rodis inserted into a radius head bone cavity; and small head radial fixing holes are distributed in the circumferential face of a plug at the outer end of the core rod, and small head radial fixing leadscrews penetrate through sclerotin inwards from the outer side of a radial head and then are connected into the small head radial fixing holes. The device belongs to intramedullary fixation, is simple to operate and firm in fixation, is particularly suitable for fixation of radial head comminuted fractures, can respectively perform convergent fixation on bone pieces from different angles, avoidsunnecessary joint replacement, and reserves and recovers the radial head of a patient as much as possible.

The invention relates to a fixing tool used after distal radius fracture reduction in the medical field, in particular to a distal radius integrated splint (integrating splints, pressing pads and strapping tapes). A cotton pressure pad is additionally arranged at the far end of a back side plate, and the angles of the back side plate, a radial side plate and an ulnar side plate are changed into adjustable angles of application pressure pads. Four horizontal holes are formed in the side surface of each splint, cotton strapping tapes penetrate through the splints respectively to connect the splints into a whole, a thin cotton pressing pad with the position capable of being adjusted at will is bonded to the inner side surface of the radial side plate and the inner side surface of the back side plate, and the splints and the pressurizing cotton pads are bonded into a whole. The problems that parts of a traditional splint are scattered and need to be operated by multiple persons, the pressurizing cotton pads and the strapping tapes need to be temporarily manufactured by doctors, an anaphylactic reaction is caused due to the fact that the pressing pads or the strapping tapes stimulate the skin, pressing of the fractured end of a fracture is uneven, and pressing pad movement and fracture displacement are prone to occurring are solved; and the problems that a traditional splint is inconvenient to adjust and dress repeatedly, and is inconvenient to carry and use at any time can be solved.

A wrist orthosis (1) for support of a patient's wrist, comprising a wire frame (2) for engagement with a forearm (F), wrist (W), and hand (H) of a patient, the wire frame (2) comprising a radial wire section (3) configured to extend in a distal direction along the forearm, wrist and toward a radial side of the hand. The radial wire section (3) is connected to a palmar wire section (4) configured to extend in lateral direction from the radial side of the hand along a palmar region (6) thereof toward an ulnar side of the hand. The palmar wire section (4) is connected to an ulnar wire section (5) configured to extend from the ulnar side of the hand in proximal direction toward an along the wrist and forearm. The radial and ulnar wire sections (3,5) are laterally spaced apart along an intermediate dorsal region (7) of the hand.

A distal radioulnar joint prosthesis for replacing the distal radioulnar joint and a method for its implantation is provided. Such a device includes an ulnar component, a radial component, and a motion liner. The ulnar component includes a stem, a collar, and a shell. The radial component includes a hemispherical ball and plate. The hemispherical ball of the radial component is secured with the radial plate and articulates with the ulnar shell via the motion liner. The prosthesis is designed to more accurately replicate the biomechanics of the distal wrist than currently used implants.

An all-trans wrist joint prosthesis retaining the function of a distal radioulnar joint comprises a carpal bone base, a carpal bone joint fossa, a movable ball and a radial handle, and a wrist bone marrow needle is arranged on the carpal bone base; the carpal joint fossa is connected with the carpal base through a connecting plate; the movable ball body is of an elliptical hemispheroid structure matched with the lower surface of the carpal joint fossa; the movable ball body is connected with the radius handle through the radius connecting plate, the radial bone marrow needle and the ulna bone marrow needle are arranged below the radius handle, a lock hole is formed in the upper surface of the ulna bone marrow needle, a limiting lock catch is arranged below the radius handle, and the ulna bone marrow needle is connected to the limiting lock catch through the lock hole. The defects in the prior art are overcome, and a larger movement range is obtained through the design of the reverse wrist joint; and through the detachable design of the carpal joint fossa and the movable ball body, the material cost for rebuilding is greatly reduced, and meanwhile, the angle of the prosthesis joint surface can be adjusted, so that the optimal palmar inclination angle and the optimal ulnar deflection angle can be conveniently adjusted, and the error-tolerant rate of osteotomy in an operation is improved.

The invention discloses a bone defect repair system for a wrist joint. The bone defect repair system comprises a distal radius prosthesis and a radius articular surface prosthesis; the first end of the body of the distal radius prosthesis is provided with a plate-shaped radius setting part extending in the long axis direction of the body of the distal radius prosthesis; the radius setting part is provided with a plurality of radius connecting holes, and the end part of the second end of the body of the distal radius prosthesis is provided with a first limiting groove; the first end of the radius articular surface prosthesis is provided with a protruding first limiting block, and the first limiting block is installed in the first limiting groove; and the second end face of the radius articular surface prosthesis is a radius articular surface. The radius articular surface and a metacarpal bone jointly form a wrist joint part corresponding to the radius, the geometrical shape of the wrist joint part is the same as the geometrical shape of the articular surface of an anatomical wrist joint, and therefore the function and the range of motion of the wrist joint can be recovered.

The present invention provides a design method and device for a handle, which provides a shape and structure covering various parts of the hand except the lower carpal tunnel. This design method and device are applicable to various hand handles. In particular, the device comprises a general Y-shaped configuration, as eg pliers / tweezers with working ends. The handle may include a radial plane, a lateral ulna plane, and a medial plane. The handle can also have a spiral arm, an ulnar arm and a distal arm, with an ulnar end and a spiral end that can be grasped by hand.

The invention discloses a customized radial head prosthesis based on three-dimensional anatomy of the proximal radius of the uninjured side, and belongs to the field of radial head prosthesis customization. According to the customized radial head prosthesis based on three-dimensional anatomy of the proximal radius of the uninjured side, the radial head prosthesis is customized, so that the prosthesis is excellent in matching and excellent in biomechanical property, and osteoporosis and articular cartilage surface damage of the small head of humerus can be effectively avoided. In addition, in the multi-time printing process, a cartilage supporting layer can be formed in an outer cartilage layer in the prior art, so that the supporting strength of the cartilage layer is high, the situation that in the prior art, after cartilage on a prosthesis is locally abraded, the prosthesis is loosened is effectively avoided. Meanwhile, after the local part of the outer cartilage layer is abraded, cartilage growth liquid in the radius layer of the outer multi-through hole seeps out along the abraded part, cartilage cells are effectively guided to grow at the abraded part, and then the self-repairing effect of the abraded cartilage part is achieved. Compared with the prior art, the adaptability of the prosthesis and a patient is effectively guaranteed, and the service life of the prosthesis in the body of the patient is prolonged.

The invention discloses a Mimics-based computer simulation double-wedge-shaped osteotomy method. The method comprises the following steps: acquiring CT projection data of the affected side and CT projection data of the uninjured side of a patient; respectively inputting the affected side CT projection data and the uninjured side CT projection data into Mimics, and establishing a corresponding affected side three-dimensional model and uninjured side three-dimensional model only containing humerus and ulna and radius; performing X-ray photography on the affected side three-dimensional model and the uninjured side three-dimensional model in an X-ray module, and acquiring a corresponding affected side simulated normal-position X-ray film and an uninjured side simulated normal-position X-ray film; determining an affected side osteotomy orthopedic angle according to the affected side simulation normal position X-ray film and the uninjured side simulation normal position X-ray film; designing an osteotomy path on the affected side simulation orthotopic X-ray film; projecting an osteotomy path on the affected side simulation normal position X-ray film to an entity STL according to a position likelihood principle to obtain an osteotomy indication point; and enabling a computer to simulate osteotomy and surgical reduction. The method can improve the measurement precision of the lifting angle, effectively reduce the lateral displacement, increase the bone surface contact area, improve the bone contact stability, and reduce the bone disconnection rate.

The invention provides a wrist joint prosthesis. The wrist joint prosthesis comprises: an articular surface prosthesis; a radius prosthesis which is connected with the first end of the articular surface prosthesis in an angle adjustable manner; an ulna prosthesis which is rotatably connected with the second end of the articular surface prosthesis; and an angle adjusting device which is arranged between the articular surface prosthesis and the radius prosthesis so as to adjust the angle between the radius prosthesis and the articular surface prosthesis. According to the technical scheme, the problem that the palm flexion or dorsal extension motion range of wrist joints of some patients is limited due to the inclination angle fixing design of the radius joint facing the palm side in the related technology can be effectively solved.

A needle-type locking osteosynthesis plate nail system structure for radius distal fracture includes an implantation needle, a compression fixing needle, a bent part, a compression plate, locking screws and a cortical bone screw; the implantation needle is connected with the compression fixing needle through the bent part; a compression part has a ''U'' structure, and the tail end of the compression part is in the shape of an arc; the compression plate is arranged on both arms of the compression part, and the compression plate is provided with an inverted cone-shaped fixing groove to simultaneously press both arms of the compression part; and screw holes are arranged in the compression plate, and the locking screws and the cortical bone screw pass through the screw holes to pressurize andfix a bone block. The needle-type locking osteosynthesis plate nail system structure reduces ligament peeling during surgery, has smaller damage to a patient, reduces the pain of the patient, and cangreatly shorten the recovery period of the patient; and the needle-type locking osteosynthesis plate nail system structure also reduces the difficulty of bone reduction, improves the success rate of the surgery, and is more convenient for clinical operation.

The invention discloses a Yao-nationality medicine for treating fracture of distal radius. According to the Yao-nationality medicine, different prescription combinations are adopted for different phases of fracture, swelling pain of an affected limb can be relieved at the early phase, fracture healing can be promoted at the medium phase, and affected wrist functions can be improved at the late phase, so that occurrence of complications after fracture can be effectively reduced.

The invention discloses a rapid positioning auxiliary drilling device for carpal bone and forearm far-end surgical operation. The rapid positioning auxiliary drilling device comprises a supporting column, an adjusting cylinder, an adjusting knob and a fixing ring, wherein a supporting rod is arranged on one side wall of the supporting column, a supporting plate is arranged at one end away from thesupporting column, of the supporting rod, a gasket is bonded to the upper end of the supporting plate, and a lead screw is welded to the top end of the supporting column. The rapid positioning auxiliary drilling device has the beneficial effects that by arranging the adjusting knob, the lead screw, the adjusting cylinder and a connecting rod, the height of the fixing ring can be conveniently adjusted, traditional tedious bolt adjustment is avoided, the height of the fixing ring can be adjusted more flexibly, and the rapid positioning requirement of an ulna or radius operation is met. By arranging a sliding sleeve, an adjusting rod, a gear, an adjusting groove, a tooth groove, a locking bolt, an opening, a positioning window, a transparent glass plate, a sleeve positioning hole and an adjusting long hole, accurate positioning of the ulna or radius part of the wrist of the patient can be realized when the wrist of the patient is reliably fixed, and the subsequent operation efficiency isconveniently improved.

The invention discloses a distal radius palmar bone fracture plate. The distal radius palmar bone fracture plate comprises a bone fracture plate body, wherein the bone fracture plate body comprises a distal end section close to a wrist joint and a proximal end section, wherein and the top surface of the distal end section close to the wrist joint is of an inclined surface structure; a distal end upper kirschner wire hole, a distal end upper locking hole, a concave hole and a distal end lower locking hole are sequentially formed in the position, close to the wrist joint, of the distal end from top to bottom; the whole concave hole is in a shield shape; a sawtooth structure is arranged on the upper edge of the concave hole; a distal end lower kirschner wire hole is formed under the distal end upper locking hole; the distal end lower locking hole is positioned in the middle, close to the lower end of the wrist joint section, of the distal end; the proximal end section is sequentially provided with a sliding hole, proximal end locking holes and near-end lower kirschner wire holes from top to bottom; and proximal end upper kirschner wire holes are formed between the adjacent proximal end locking holes. The anatomical design of the bone fracture plate conforms to the anatomical characteristics of the distal radius, the bone fracture plate can be used as a reduction template for comminuted fracture, and excessive soft tissue stripping and blood supply stimulation damage are avoided.