Patient-specific computed tomography guides

US9066727B2 · kind B2 · utility

Assignee

• MATERIALISE N.V. · BE

Inventors

• Joshua B. Catanzarite · Warsaw, US
• Ryan J. Schoenefeld · Fort Wayne, US

Key dates

• Filing date: Mar 3, 2011
• Grant date: Jun 30, 2015
• Expiry date: Jun 21, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2034/108
• WIPO field: Medical technology
• WIPO sector: Instruments

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.