Patient-specific instrumentation for patellar resurfacing surgery and method

• Main Author: COUTURE PIERRE
• Format: Patent
• Language: Chinese; English
• Published: 31.07.2018
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CALCULATING; COMPUTING; COUNTING; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ELECTRIC DIGITAL DATA PROCESSING; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PHYSICS; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

A system for creating a patient-specific jig model for patellar resurfacing surgery comprises a patellar implant positioning module for obtaining a planned position of a patellar implant on a model ofthe patella, the model being anatomically patient-specific. A patella resurfacing calculator module calculates a position and/or orientation of a resurfacing plane and attachment bore in the patellaas a function of the planned position of the patellar implant. A jig model generator module for generates and outputs a virtual jig model using the resurfacing plane and attachment bore of the patellaand the model of the patella, the jig model comprising at least one patient-specific contact surface corresponding to a surface of the patella for complementary contact, at least one drill guide positioned relative to the at least one patient-specific contact surface to be configured to guide a tool defining the attachment bore for the patellar implant, and at least one cut guide positioned relative to the at least one pat