59 results about "Humeral shaft" patented technology

An implant assembly and associated method for selectively performing reverse and traditional arthroplasty for a shoulder joint that includes a humerus and a glenoid. The implant assembly may include a head, a cup, a humeral stem and an adapter. The method includes inserting the humeral stem to the humerus and connecting a male taper of the adapter to a female taper of the head. For reverse arthroplasty, the method includes attaching the adapter to the glenoid and the cup to the stem. For traditional arthroplasty, the method includes attaching the adapter to the humeral stem and the cup to the glenoid. The method also includes articulating the head with the cup.

An implant assembly and associated method for selectively performing reverse and traditional arthroplasty for a shoulder joint that includes a humerus and a glenoid. The implant assembly may include a head, a cup, a humeral stem and an adaptor. The method includes inserting the humeral stem to the humerus and connecting a male taper of the adaptor to a female taper of the head. For reverse arthroplasty, the method includes attaching the adaptor to the glenoid and the cup to the stem. For traditional arthroplasty, the method includes attaching the adaptor to the humeral stem and the cup to the glenoid. The method also includes articulating the head with the cup.

Various embodiments of the present invention relate to an apparatus and method for reverse shoulder arthroplasty (e.g., reverse total shoulder arthroplasty). In one specific example, a glenoid component used to resurface the scapula may be provided. Of note, unlike traditional total shoulder arthroplasty the glenoid component in a reverse shoulder is convex rather than concave; it acts as a physical stop to prevent the superior migration of the humeral head—a typical occurrence in patients suffering from rotator cuff tear arthropathy (CTA).

An implant assembly and associated method for selectively performing reverse and traditional arthroplasty for a shoulder joint that includes a humerus and a glenoid. The implant assembly may include a head, a cup, a humeral stem and an adaptor. The method includes inserting the humeral stem to the humerus and connecting a male taper of the adaptor to a female taper of the head. For reverse arthroplasty, the method includes attaching the adaptor to the glenoid and the cup to the stem. For traditional arthroplasty, the method includes attaching the adaptor to the humeral stem and the cup to the glenoid. The method also includes articulating the head with the cup.

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.

Disclosed is a kit having a set of humeral components used in partial and total joint replacement surgeries. The set of humeral components has a plurality of stems having varying stem diameters and a set of humeral heads having hemispheric surfaces with varying radiuses. Each stem defines a platform having a hole which is a fixed distance from the proximal end of the stem. The distance of the hole from the proximal end of the stem is a function of the stem diameter.

A jig for trialing a head and conjoining portion of a humeral (shoulder) prosthesis and transferring the spatial positioning to a final implant 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 jig utilizes a rotatable body such as a sphere that is non-translatable relative to a jig body. A trial implant construct, having a head and neck that is fixed relative to one another (is spatially positioned), is placed in the jig with the neck thereof in contact with the rotatable sphere. As the head is caused to align with markings on the jig and situated flush with the jig, the rotatable sphere replicates the angular position of the neck with respect to a fixed position head. A final implant construct whose components are not fixed relative to one another, is placed in the jig which automatically transfers the spatial positioning of the trial implant construct to the final implant construct.

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).

A jig for trialing a head and conjoining portion of a humeral (shoulder) prosthesis and transferring the spatial positioning to a final implant 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 jig utilizes a rotatable body such as a sphere that is non-translatable relative to a jig body. A trial implant construct, having a head and neck that is fixed relative to one another (is spatially positioned), is placed in the jig with the neck thereof in contact with the rotatable sphere. As the head is caused to align with markings on the jig and situated flush with the jig, the rotatable sphere replicates the angular position of the neck with respect to a fixed position head. A final implant construct whose components are not fixed relative to one another, is placed in the jig which automatically transfers the spatial positioning of the trial implant construct to the final implant construct.

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.

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 shoulder implant system includes a humeral stem implant, a humeral neck implant component, a humeral head implant component, and a glenoid implant. The humeral stem implant has a fin coupled to an exterior surface thereof that is inwardly tapered at an angle relative to vertical. At least a portion of the fin forms a wedge that directly engages and compacts cancellous bone during installation of the humeral stem implant. The humeral neck implant component is configured to be coupled with the humeral stem implant. The humeral head implant component is configured to be coupled to the humeral stem implant via the humeral neck implant component. The glenoid implant has a plurality of peripheral pegs. Each of the peripheral pegs has a plurality of sets of resilient lobes.

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.

The invention relates to a locking bone fracture plate for the far back outer side of humerus, which is a locking bone fracture plate for the far end of the humerus mainly used for treating humeral condylar fracture and fracture of humeral shaft, wherein a short steel plate can also be used for conveniently treating the humeral condylar fracture. The steel plate comprises a head and a body and is divided into a left part and a right part. The head of the steel plate is slightly wider than the body; the shape of the body of the steel plate is straight; the shape of the head of the steel plate rotates to the oblique edge of the head edge from the body; when the shape of the head rotates to the end, the plane of the steel plate rotates about 90 DEG; when the steel plate is used in the shape, the body of the steel plate is attached to the shaft of the humerus and the head of the steel plate is attached to the back side and the outer side of the condyle of the humerus; the head of the steel plate is provided with eight bolt holes, wherein bolts on the first hole, the second hole and the third hole can penetrate through the condyle of the humerus.

The invention relates to a bone fixation plate, in particular to a humeral far-end posterior-lateral double-column fixing and locking bone fixation plate. The humeral far-end posterior-lateral double-column fixing and locking bone fixation plate comprises a steel plate head portion, a steel plate rear portion main body, a steel plate front flank and a steel plate rear flank. The humeral far-end posterior-lateral double-column fixing and locking bone fixation plate is mainly used for treating a humeral low-section fracture and a far-end humeral intercondylar fracture by attaching the outline of a steel plate to the humeral shaft and a humeral far-end and outer side edge anatomy in form. The whole attachment of the outline of the steel plate and the humeral shaft and the humeral far-end and outer side edge anatomy in form originally needs multiple steel plate or a combined reconstructed steel plate, but now the whole attachment can be achieved only by needing one steel plate, and the fixing effect is very good. In addition, anatomic attached flanks turned in an arc shape are smooth, radial nerve irritation probability is low, and the humeral far-end posterior-lateral double-column fixing and locking bone fixation plate is especially suitable for humeral lateral approach and 'Triceps Hemi-peel Approach' suggested and selected by surgeons at present.

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.