Acetabular cup prosthesis alignment system and method

摘要

Technologies for aligning an acetabular prosthetic component in a patient's surgically prepared acetabulum include a reference sensor module securable to the patient's bony anatomy, an inserter sensor module securable to an acetabular prosthetic component inserter, and a display module. Each sensor module generates sensor data indicative of the orientation of the sensor module and/or structures to which the sensor module is coupled. The display module receives the sensor data from the sensor modules, determines the orientation of the acetabular prosthetic component relative to the patient's bony anatomy, and displays indicia of the determined orientation on a display.

主权项

1. A system for aligning an acetabular prosthetic component in a patient's surgically prepared acetabulum, the system comprising:
a reference sensor module securable to the patient's bony anatomy and including (i) a housing having a first keyed structure, (ii) a first orientation sensor configured to generate first sensor data indicative of the orientation of the patient's bony anatomy in three-dimensions, and (iii) a first communication circuit to transmit the first sensor data; an inserter sensor module securable to an acetabular prosthetic component inserter, the inserter sensor module including (i) a housing having a second keyed structure, (ii) a second orientation sensor configured to generate second sensor data indicative of the orientation of the acetabular prosthetic component inserter in three-dimensions, (iii) a second communication circuit to transmit the second sensor data, and (iv) an alignment indicator; a display module separate from the reference sensor module and the inserter sensor module, the display module including (i) a display, (ii) a third communication circuit configured to receive the first sensor data and the second sensor data, and (iii) a processing circuit to determine an orientation of an acetabular prosthetic component coupled to the acetabular prosthetic component inserter relative to the patient's bony anatomy based on the first sensor data and the second sensor data, display indicia of the determined orientation of the acetabular prosthetic component on the display, and communicate with the inserter sensor module to activate the alignment indicator in response to the determined orientation being within threshold amount of a reference orientation; wherein the first keyed structure and the second keyed structure are keyed to each other such that the reference sensor module and the inserter sensor module can be coupled to each other in a single orientation in which the first keyed structure and the second keyed structure are mated; and wherein the first keyed structure comprises a raised platform extending upwardly from a top surface of the housing of the reference sensor module and the second keyed structure comprises a recess defined in a top surface of the housing of the inserter sensor module, wherein the raised platform is received in the recess when the reference sensor module and the inserter sensor module are coupled to each other in the single orientation.