Navigation instruments for subchondral bone treatment
AssigneeZimmer Knee Creations, Inc.
InventorsShaun B. Hanson, Christopher D. Mandeen, Peter F. Sharkey
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Abstract
An instrument for navigating to a target area near a subchondral defect of a bone and associated methods are disclosed. The instrument can include a body portion having a patient specific surface defining a negative impression of a portion of a skin surface of a patient, and a targeting device coupled to the body portion, the targeting device including a rail and at least one device portal configured to guide a device into a subchondral region of the bone for treatment at the target area.
Claims20
An instrument for navigating to a target area near a subchondral defect of a bone, comprising:
- a body portion having a front surface and a patient specific surface opposite the front surface, the patient specific surface defining a negative impression of a portion of a skin surface of a patient;
- and
- a targeting device configured to be attached to the front surface of the body portion, the targeting device including a rail and at least one device portal configured to guide a device into a subchondral region of the bone for treatment at the target area.
An instrument for navigating to a target area near a subchondral defect of a bone, comprising:
- a body portion having a front surface and a patient specific surface opposite the front surface, the patient specific surface defining a negative impression of a portion of a skin surface of a patient;
- an attachment block attachable to the front surface of the body portion;
- and
- a targeting device, the targeting device including:
- a rail;
- an elongate portion extending from the rail, the elongate portion attachable to and moveable relative to the attachment block;
- and
- at least one device portal configured to guide a device into a subchondral region of the bone for treatment at the target area.
A method of accessing a target area near a defect in a bone, the method comprising:
- positioning a molded cast on a patient, the molded cast having a front surface and a patient specific surface defining a negative impression of a skin surface of the patient, the negative impression including an imprint of at least one anatomical landmark, wherein the molded cast includes a visual marker;
- selecting, based on a magnetic resonance imaging (MRI) image identifying the visual marker and the defect, a device portal located on a targeting device to access the target site;
- and
- accessing the target site with the device via the selected device portal.
Dependencies are inferred from the claim text.