ClearPoint Neuro, Inc.
MRI SURGICAL SYSTEMS INCLUDING MRI-COMPATIBLE SURGICAL CANNULAS FOR TRANSFERRING A SUBSTANCE TO AND/OR FROM A PATIENT

Abstract:

A cannula for transferring a substance to and/or from a patient includes a rigid, tubular support sleeve, an inner sleeve, a transfer tube, and a conformal polymeric sleeve. The support sleeve defines a support sleeve lumen extending from a first opening at a proximal end of the support sleeve to a second opening at a distal end of the support sleeve. The support sleeve includes a rigid, MRI-compatible material. The inner sleeve is disposed in the support sleeve lumen and extends beyond the distal end of the support sleeve to a distal end of the inner sleeve. The inner sleeve defines an inner sleeve lumen. The transfer tube is disposed in the inner sleeve lumen and extends to or beyond the distal end of the inner sleeve to a distal end of the transfer tube. The transfer tube defines a transfer tube lumen terminating at an opening at the distal end of the transfer tube. The conformal polymeric sleeve surrounds at least a portion of the support sleeve and at least a portion of the inner sleeve. The conformal polymeric sleeve includes a transitional section extending from the distal end of the support sleeve and over the inner sleeve in a direction toward the distal end of the inner sleeve. The transitional section tapers inwardly in the direction toward the distal end of the inner sleeve.