Back to results
US 9,610,166 B2Granted
Methods and devices for less invasive glenoid replacement
AssigneeShoulder Innovations, Inc.
InventorsStephen B. Gunther, Desmond O'Farrell, Mark Edwin Zyzelewski, Andrew John Rodenhouse
Life of this patent
Estimating the term…
Abstract
The invention relates to a glenoid (shoulder socket) implant prosthesis, a humeral implant prosthesis, devices for implanting glenoid and humeral implant prostheses, and less invasive methods of their use for the treatment of an injured or damaged shoulder.
Claims20
A glenoid implant, comprising:
- a medial surface configured to engage a prepared surface of the glenoid bone;
- a concave articulating surface;
- a peripheral edge;
- and
- a central axis;
- wherein the concave articulating surface comprises a non-spherical shape defined by a complete rotation of an arc of a first, constant radius about an axis of rotation passing through the longitudinal midpoint of the concave articulating surface wherein the first, constant radius is greater than a second radius of which rotation around the axis of rotation would produce a spherical articulating surface.
3 more elements
A glenoid implant, comprising:
- a medial surface configured to engage a prepared surface of the glenoid bone;
- a concave articulating surface;
- a peripheral edge;
- a central axis;
- and
- a point (R) where the central axis intersects the articulating surface;
- wherein the concave articulating surface comprises a shape such that a sphere having a diameter (D) brought into apposition with the concave articulating surface such that the central axis of the glenoid implant intersects a center point of the sphere would define a circle of contact between the sphere and the concave articulating surface, wherein a diameter of the circle of contact is smaller than both a diameter of the circular peripheral edge of the implant and D, wherein the sphere does not contact the concave articulating surface inside of the circle of contact.
4 more elements
A glenoid implant, comprising:
- a medial surface comprising an axially extending bone engagement structure;
- a concave articulating surface;
- a peripheral edge;
- a central axis;
- and
- a point (R) where the central axis intersects the articulating surface;
- wherein the concave articulating surface comprises a shape defined by an arc of a constant radius when the arc of constant radius is rotated around an axis of rotation passing through R,
- wherein the constant radius is measured between a point of origin and R, wherein the point of origin is laterally offset from the axis of rotation,
- wherein the arc of constant radius is between R and a point on the peripheral edge such that a line connecting the point of origin and the point on the peripheral edge intersects the axis of rotation, and
- wherein the arc of constant radius is rotated around the axis of rotation such that the point of origin describes a circle relative to the axis of rotation in a plane perpendicular to the axis of rotation.
7 more elements
Dependencies are inferred from the claim text.