59 results about "Humeral shaft" patented technology

A humeral prosthesis allows a surgeon to adjust humeral head position thereof in three-dimensional space with respect to a humeral component of the humeral prosthesis that has been either previously implanted into a humerus of a patient or not. The humeral prosthesis includes a conjoining component that is configured to releasably mate with the humeral component and to releasably mate with a humeral head. The conjoining component allows the humeral head to be selectively positionable from continuously infinite positions about two orthographic axes with respect to the conjoining component. The selected spatial position of the head is locked by a locking member of the conjoining component. The conjoining component allows the use of various sized heads, allow in vivo head trialing and/or exchange, and retrofit of heads for previously implanted shoulder prosthesis in need of revision.

Trials for a reverse shoulder system are described. The trials generally include an insert housed within a humeral cup. The insert has a proximal end and a distal end, the proximal end having a concave recess therein adapted to receive a glenosphere prosthesis. The distal end of the insert includes a shaft, the shaft is substantially housed within the confines of the humeral cup. A distal end of the humeral cup is inserted in a humeral stem.

A bone plate is provided for the distal humerus, the plate having a main shank portion with one or more screw holes. The main shank portion bends to form an off-axis shank portion that is free of screw holes. The off-axis portion twists 90 degrees to form a distal shank portion. A barrel formed on the distal shank portion allows for the insertion of a bone screw. The bone plate is thus affixed in two perpendicular planes by screwing the lower shaft portion to the humeral shaft and passing the bone screw through the distal humerus into the bevelled barrel.

A humeral head resurfacing implant (11) that has a modulus of elasticity close to that of human cortical bone as a result of its design from an integral substrate of isotropic graphite covered completely with a reinforcing layer of dense isotropic pyrolytic carbon. A carefully engineered cruciform stem (15) extends from the axial center of a flat distal circular surface (23) of a spherical cap portion (19) of the implant head located within the confines of a surrounding skirt portion (21).

The invention provides an implantable medical device for treatment of a proximal humerus fracture, comprising a base element to be anchored in the medullar cavity of the humeral shaft, a support element to be fixed with respect to the base element, wherein the support element is configured to support one or more bone fragments, wherein the medical device comprises positioning members configured to position the support element with respect to the base element in a range of rotational positions and axial positions, and wherein the medical device comprises a fixation device to fixate the support element, within the range of rotational positions and axial positions, in a desired rotational and axial position with respect to the base element. In an embodiment, the medical device is a non-occluding medical device, wherein after implantation the medullar cavity is not occluded by the medical device due to the open and non canal filling structure of the device preserving blood flow to the reattached bone fragments.

A new type of anterolateral anatomical locking bone plate in the middle and lower humerus, divided into proximal part, transitional part and distal part. The proximal part is located on the anterolateral side of the middle shaft of the humerus, and includes 3, 4, 5, 6, 7, and 8 pairs of screw holes, each pair of screw holes is composed of a locking hole combined with a sliding pressure hole; the transition part is located at the middle and lower humerus 1 The anterolateral part of the /3 junction contains 2 locking holes, showing 7° anterior lateral flexion and 20° backward twist, continuing to the distal part; the distal part is located on the anterolateral part of the lower humerus and contains 4 locking holes , in a double-row symmetrical distribution. The four corners of the distal and proximal ends of the bone plate each have a round hole with a diameter of 2 mm, which is used to temporarily place Kirschner wires. The invention conforms to the anatomical characteristics of the anterolateral side of the middle and lower part of the humerus, so that the screw can be placed perpendicular to the bone plate and the bone surface at the same time. The sliding pressurization hole in the proximal part can realize the sliding pressurization effect. The design of double-row nail holes on the distal side can allow more screws to be placed and provide more reliable fixation.

The invention discloses a shoulder joint bone repair and reconstruction device, and relates to the technical field of medical instruments. The shoulder joint bone repair and reconstruction device comprises screws, a glenoid cavity tissue block and a humeral head tissue block, the lower end faces of the glenoid cavity tissue block and the humeral head tissue block are provided with screw holes connected with the screws or provided with fixing holes for fixing screws or fasciole anchors to pass through for fixation, and the glenoid cavity tissue block and the humeral head tissue block can be separated and combined for use or combined with the screws for use; after the screws are fixed to the lower front portion of the shoulder glenoid cavity and the humeral head, and the bone injuries causedby shoulder joint dislocation are repaired; the surgical operation can be completed under an arthroscope, in combination with a soft tissue repair surgery, the injured structure of the joint can be effectively repaired, the anatomical repair of the bone structure is provided, the surgical time is saved, complications of the autologous tissue donor site are reduced, the risk of infectious diseasesof the allogeneic tissue is reduced, and the device is suitable for application and popularization in medical institutions.