Orthopaedic reamer
AssigneeZimmer, Inc.
InventorsMarkus Rauscher, Urs Gersbach
Life of this patent
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Abstract
An orthopaedic reamer is provided for preparing a bone socket, such as the glenoid of the scapula, to receive a prosthetic glenoid component. The orthopaedic reamer includes an elongate shaft and an oblong cutting head, such as a cutting head having an oval or elliptical shape.
Claims22
An orthopaedic reamer for preparing a patient's bone, the orthopaedic reamer comprising:
- a shaft that is rotatable about a longitudinal axis;
- and
- a cutting head coupled to the shaft to transmit rotation of the shaft about the longitudinal axis to the cutting head, the cutting head comprising:
- an oblong body having a peripheral wall that defines an outer perimeter of the cutting head, a length of the oblong body exceeding a width of the oblong body, wherein the length and the width are measured perpendicular to each other and along a plane perpendicular to the longitudinal axis;
- a first blade that extends radially outwardly from the longitudinal axis toward the peripheral wall of the oblong body;
- and
- a second blade that extends radially outwardly from the longitudinal axis toward the peripheral wall of the oblong body in a direction transverse to the first blade.
An orthopaedic reamer configured for rotation about a longitudinal axis to prepare a patient's bone, the orthopaedic reamer comprising:
- a shaft;
- and
- a cutting head coupled to the shaft and comprising:
- an oblong body having a peripheral wall that defines an outer perimeter of the cutting head, a first dimension of the oblong body exceeding a second dimension of the oblong body, wherein the first dimension and the second dimension are measured perpendicular to each other and along a plane perpendicular to the longitudinal axis;
- and
- a plurality of blades spaced radially about the longitudinal axis, the plurality of blades extending radially outwardly from the longitudinal axis toward the peripheral wall of the oblong body.
A method for preparing a glenoid of a patient's scapula using an orthopaedic reamer having an oblong cutting head that defines a bone-contacting surface, the method comprising the steps of:
- accessing the patient's scapula;
- inserting the oblong cutting head through an incision, a length of the oblong cutting head inserted through the incision exceeding a width of the oblong cutting head inserted through the incision, wherein the length and the width are measured perpendicular to each other and along a plane perpendicular to the longitudinal axis, and wherein the oblong cutting head includes a plurality of blades spaced radially about the longitudinal axis, the plurality of blades extending radially outwardly from the longitudinal axis toward a peripheral wall of the oblong body;
- and
- positioning the bone-contacting surface of the oblong cutting head against the glenoid of the patient's scapula.
Dependencies are inferred from the claim text.