Nathan A. NETRAVALI,Micah FORSTEIN,Joel ZUHARS,In K. MUN
申请号：
US15511101
公开号：
US20170245830A1
申请日:
2015.09.21
申请国别(地区):
US
年份:
2017
代理人:
摘要：
Systems and process are provided for a tool to create a registration matrix for a bone in three dimensional workspaces relative to a system using the absence of an ultrasonic reflection from an ultrasonic sensor attached to a tracking system to build the registration matrix model. The system has hardware and software that creates an absence of ultrasonic reflection, and utilizes the information to identify the location and orientation of a set of conic volumes in order to build an estimate of the position and orientation of the bone relative to the base system, and to use the position and orientation changes to update the registration and to detect bone motion. Embodiments of invention provide a process of registering part or all of a bone without directly touching the bone using ultrasound, and as a result support a non-invasive or less-invasive approach to bone registration and bone motion detection for a system.
