Patent ID: 11871944
Assignee: ROUTE 92 MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A method of performing a medical procedure at a treatment site in a cerebral vessel of a patient, the method comprising:
positioning a system of devices into an advancement configuration, the system of devices comprising:
a catheter having a catheter lumen, an inner diameter and a distal end; and
an inner member sized and shaped to slide within the catheter lumen, wherein the inner member defines a single lumen and has a distal portion, the distal portion having a first region with a first outer diameter and a second region distal to the first region, the second region having a second outer diameter that is smaller than the first outer diameter, wherein the inner member transitions in flexibility from a proximal end of the inner member to a distal end of the inner member, the distal end of the inner member being more flexible than the distal end of the catheter, and
wherein, when positioned in the advancement configuration, the inner member is positioned within the catheter lumen and the distal portion of the inner member is located outside the distal end of the catheter so the first outer diameter of the first region minimizes a step formed by a leading edge of the catheter; and
advancing the catheter and the flexible inner member together distal to a petrous portion of an internal carotid artery to the treatment site in the cerebral vessel while the system of devices is positioned in the advancement configuration and the step is minimized.