Methods And Systems For Treatment Of Acute Ischemic Stroke
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Abstract
A system of devices for treating an artery includes an arterial access sheath adapted to introduce an interventional catheter into an artery and an elongated dilator positionable within the internal lumen of the sheath body. The system also includes a catheter formed of an elongated catheter body sized and shaped to be introduced via a carotid artery access site into a common carotid artery through the internal lumen of the arterial access sheath. The catheter has an overall length and a distal most section length such that the distal most section can be positioned in an intracranial artery and at least a portion of the proximal most section is positioned in the common carotid artery during use.
59 Citations
31 Claims
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1-18. -18. (canceled)
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19. An aspiration catheter system comprising:
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an access sheath comprising a tubular sheath body with a central lumen having an inner diameter, a proximal end and a distal opening, and a connector operably connected with the proximal end of the sheath body and having an aspiration line that connects to an aspiration source via connector; and a catheter comprising a proximal region, a distal portion comprising a distal opening and extending from the proximal region in a distal direction, and a proximal tether element connecting the distal portion with the connector of the sheath, wherein an aspiration lumen running through the distal portion of the catheter has an inner diameter that is between about 0.035″ and
about 0.095″ and
wherein the inner diameter of the central lumen of the sheath body is between about 0.065″ and
about 0.120″
,wherein the proximal region of the catheter is configured to slide within the central lumen of the sheath body to change the relative position of the proximal region within the central lumen and provide for at least a portion of the distal portion to extend outward from the distal opening of the sheath body at appropriate configurations of the proximal region, wherein an effective seal is formed by a tight fit between the proximal region and the central lumen of the sheath body, and wherein the catheter is approximately 10 cm to 25 cm in length, and wherein an aspiration lumen is formed extending from the connector configured to connect to the aspiration source through a portion of the central lumen, the proximal region and the distal region to a distal opening from the catheter. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for performing a medical procedure in a bodily vessel using an aspiration catheter system comprising an access sheath and a catheter slidably engaged with the access sheath, the catheter comprising a proximal end configured to remain in a central lumen of the access sheath and a distal end extending in a distal direction from the proximal end, the method comprising:
tracking the distal end of the catheter to a desired location within a vessel by sliding the catheter relative to the access sheath. - View Dependent Claims (30, 31)
Specification