US Patent 8116850 Organ access device and method

An insertion guide device guides an instrument toward a target location in a subject. The insertion guide device includes a base portion securable to the subject and an insertion guide portion defining an insertion axis. The insertion guide portion guides the instrument along the insertion axis, and the insertion guide portion is moveably supported by the base portion for movement of the insertion axis about at least two axes. Moreover, the insertion guide device includes a locking device that selectively fixes the insertion guide portion relative to the base portion. The locking device selectively fixes the insertion axis relative to the at least two axes substantially concurrently.