SYSTEM AND METHOD FOR INTRACRANIAL ACCESS
First Claim
1. A method of accessing the intracranial vasculature, comprising the steps of:
- inserting a delivery catheter percutaneously into the arterial system, and advancing a distal end of the delivery catheter to the cranial vasculature distal to the cervical segment of the internal carotid artery.
1 Assignment
0 Petitions
Accused Products
Abstract
A delivery catheter for accessing the intra-cranial vascular includes a rigid proximal section and a distal section having an outer diameter and flexibility suitable for advancement into the intra-cranial vasculature, such as the Petrous segment or the Cavernous segment of the internal carotid artery. The wall thickness and rigidity of the catheter decrease from the proximal section to the distal section, preferably in discrete segments each having reduced wall thickness and/or durometer relative to proximally adjacent sections. An intra-cranial access system includes the delivery catheter and a selection catheter insertable through the lumen of the delivery catheter. The selection catheter is shaped to facilitate selection of the target branch of the neurovasculature off the aortic arch and allows the delivery catheter to be advanced over the selection catheter into the selected branch.
137 Citations
19 Claims
-
1. A method of accessing the intracranial vasculature, comprising the steps of:
inserting a delivery catheter percutaneously into the arterial system, and advancing a distal end of the delivery catheter to the cranial vasculature distal to the cervical segment of the internal carotid artery. - View Dependent Claims (2, 3, 4, 5, 7)
-
6. An intracranial access system, comprising:
-
a delivery catheter having a delivery catheter lumen, a proximal end and a distal end, the delivery catheter including a plurality of sections, each section having greater flexibility than the section proximally adjacent to it; and a selection catheter having selection catheter lumen and a pre-shaped distal portion, the selection catheter insertable through the delivery catheter lumen; and at least one guidewire insertable through the selection catheter lumen.
-
-
8. An intracranial delivery catheter comprising:
an elongate tubular member having a delivery catheter lumen, a proximal end and a distal end, the delivery catheter including a plurality of discrete sections each having a wall thickness and a tubular polymeric portion having a durometer, wherein at least one of the wall thickness and durometer of each section is lower than that of the proximally adjacent section. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
-
17. An intracranial delivery catheter comprising:
-
an elongate tubular member having a delivery catheter lumen and a distal end, the delivery catheter proportioned to extend intravascularly from a femoral access point in a human patient to an intra-cranial blood vessel, the elongate tubular member including; a proximal portion including at least two rigid proximal segments, the proximal portion proportioned to extend from a femoral access point through an aortic arch; an intermediate portion including at least two intermediate segments, the intermediate section proportioned to extend intravascularly from an aortic arch through a cervical region of the vasculature, at least one of the intermediate segments having an outer diameter smaller than the outer diameter of the at least two rigid proximal segments; and a distal portion including at least two distal segments proportioned to extend intravascularly from a base of a skull to an intra-cranial blood vessel, at least one of the distal segments having an outer diameter smaller than the outer diameter of the at least two intermediate segments. - View Dependent Claims (18, 19)
-
Specification