MRI-guided medical interventional systems and methods

摘要

An MRI-guided interventional system includes a trajectory guide frame for guiding an interventional device with respect to a patient in an MRI-guided procedure and including a base, a platform, a targeting cannula, and a stabilizer mechanism. The platform is mounted on the base and includes a support table and a moving plate that is translatable relative to the support table and the base along a translational axis. The targeting cannula is mounted on the moving plate for movement therewith and includes an elongate guide bore defining a trajectory axis. The stabilizer mechanism is operable to selectively control movement between the support table and the moving plate to stabilize a position of the targeting cannula with respect to the base. The frame is operable to translate the moving plate along the translational axis relative to the base to position the trajectory axis. The translational axis is transverse to the trajectory axis.

主权项

1. An MRI-guided interventional system for use with a body of patient and an interventional device, the system including:
a trajectory guide frame for guiding the interventional device with respect to a body of a patient in an MRI-guided procedure, the trajectory guide frame including:
a base having a patient access aperture therein, wherein the base is configured to be secured to the body of the patient;a platform mounted on the base and including a support table and a moving plate that is translatable relative to the support table and the base along a translational axis;a targeting cannula mounted on the moving plate for movement therewith relative to the support table and the base, the targeting cannula including an elongate guide bore therethrough, the guide bore defining a trajectory axis and being configured to guide placement of the interventional device in vivo; anda stabilizer mechanism operable to selectively control movement between the support table and the moving plate to stabilize a position of the targeting cannula with respect to the base;wherein the trajectory guide frame is operable to translate the moving plate and thereby the targeting cannula along the translational axis relative to the base to position the trajectory axis to a desired intrabody trajectory to guide placement of the interventional device in vivo; andwherein the translational axis is transverse to the trajectory axis.