Patient-specific computed tomography guides
AssigneeMaterialise N.V.
InventorsJoshua B. Catanzarite, Ryan J. Schoenefeld
Life of this patent
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Abstract
An orthopedic device for joint arthroplasty includes a patient-specific alignment guide constructed and configured for a specific patient from medical scans that show a bone surface of a bone of the patient without any overlying soft tissue. The patient-specific alignment guide includes a patient-specific inner surface configured to be offset from and mimic the bone surface and form a clearance for soft tissue overlying the bone surface. The alignment guide also includes a plurality of patient-specific contact areas configured to mate and register directly on the bone surface without intervening soft tissue for direct bone registration. The plurality of patient-specific contact areas includes non-contiguous surface contact areas.
Claims12
A patient-specific alignment guide for joint arthroplasty comprising:
- a patient-specific inner surface configured to be offset from and mimic a bone surface so that a majority of the patient-specific inner surface does not make contact with the bone surface, the patient-specific inner surface forming a clearance under the patient-specific inner surface for soft tissue overlying the bone surface;
- and
- a plurality of patient-specific contact areas formed on the patient-specific inner surface and configured to contact the bone surface without intervening soft tissue;
- and
- an extension extending from the patient-specific inner surface, the extension comprising a patient-specific contact surface configured to contact the bone surface without intervening soft tissue.
A patient-specific alignment guide for joint arthroplasty comprising:
- a patient-specific inner surface configured to be offset from a bone surface so that a majority of the patient-specific inner surface does not make contact with the bone surface, the patient-specific inner surface forming a clearance under the patient-specific inner surface for soft tissue overlying the bone surface;
- a plurality of patient-specific contact areas formed on the patient-specific inner surface and configured to contact the bone surface without intervening soft tissue;
- an extension extending from the patient-specific inner surface, the extension comprising a patient-specific contact surface configured to contact the bone surface without intervening soft tissue;
- a first pair of patient-specific guiding formations having corresponding bores for guiding a tool therethrough;
- and
- a second pair of patient-specific guiding formations having corresponding bores for guiding the tool therethrough.
Dependencies are inferred from the claim text.