Methods and systems for treatment of acute ischemic stroke
First Claim
1. A system of devices for performing a medical procedure at a treatment site in a cerebral vessel of a patient, the system comprising:
- a catheter having a catheter lumen having an inner diameter and a distal end; and
an inner member sized to slide within the catheter lumen, wherein the inner member defines a single lumen and has a distal portion and a distal-most end having a distal opening, the distal portion having a first outer diameter that tapers distally to 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 the distal-most end of the inner member, the distal-most end of the inner member being more flexible than the distal end of the catheter, andwherein the system is in an advancement configuration when the inner member is positioned coaxially in the catheter lumen with the distal portion positioned distal to the distal end of the catheter and the inner member held fixed relative to the catheter,wherein a flexibility of the distal portion decreases smoothly from a flexibility at the second outer diameter to a flexibility at the first outer diameter when the system is in the advancement configuration, andwherein the system of devices is sufficiently flexible that, when the system is in the advancement configuration, the catheter and the inner member are configured to be concurrently advanced distal to a petrous portion of an internal carotid artery while the system of devices is positioned in the advancement configuration.
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Accused Products
Abstract
Described are systems for performing a medical procedure at a treatment site in a cerebral vessel of a patient. The system includes a catheter and an inner member sized to slide within the catheter lumen. The inner member defines a single lumen and has a distal portion and a distal-most end having a distal opening, the distal portion having a first outer diameter that tapers distally to a second outer diameter that is smaller than the first outer diameter. A flexibility of the distal portion decreases smoothly from a flexibility at the second outer diameter to a flexibility at the first outer diameter when the system is in an advancement configuration. The system is sufficiently flexible that, when in the advancement configuration, the system is configured to be advanced distal to a petrous portion of an internal carotid artery.
419 Citations
19 Claims
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1. A system of devices for performing a medical procedure at a treatment site in a cerebral vessel of a patient, the system comprising:
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a catheter having a catheter lumen having an inner diameter and a distal end; and an inner member sized to slide within the catheter lumen, wherein the inner member defines a single lumen and has a distal portion and a distal-most end having a distal opening, the distal portion having a first outer diameter that tapers distally to 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 the distal-most end of the inner member, the distal-most end of the inner member being more flexible than the distal end of the catheter, and wherein the system is in an advancement configuration when the inner member is positioned coaxially in the catheter lumen with the distal portion positioned distal to the distal end of the catheter and the inner member held fixed relative to the catheter, wherein a flexibility of the distal portion decreases smoothly from a flexibility at the second outer diameter to a flexibility at the first outer diameter when the system is in the advancement configuration, and wherein the system of devices is sufficiently flexible that, when the system is in the advancement configuration, the catheter and the inner member are configured to be concurrently advanced distal to a petrous portion of an internal carotid artery while the system of devices is positioned in the advancement configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification