Methods and devices for transcarotid access
First Claim
1. A method for introducing an interventional device into a common carotid artery, the method comprising:
- collectively introducing an arterial access sheath and a first dilator into a common carotid artery via a carotid access needle puncture site, wherein the first dilator is positioned within the arterial access sheath, wherein;
a) the arterial access sheath includes a sheath body sized and shaped to be introduced into the common carotid artery via the carotid artery access site, the sheath body defining an internal lumen that provides a passageway for introducing a catheter into the common carotid artery when the sheath body is positioned in the common carotid artery; and
b) the first dilator has a tapered distal tip sized and shaped to dilate the needle puncture site to a larger diameter for insertion of the arterial access sheath into the artery, the first dilator having an internal lumen to allow the dilator to be inserted over a sheath guidewire into an artery, wherein at least a portion of the first dilator has a first bending stiffness;
removing the first dilator from the arterial access sheath; and
introducing an elongated second dilator into the internal lumen of the sheath body while the sheath body is positioned within the common carotid artery, the second dilator having a tapered distal tip, the second dilator having an internal lumen to allow the second dilator to be inserted over a guidewire into an artery, wherein the second dilator has a distal region having a second bending stiffness less than the first bending stiffness of the first dilator.
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Accused Products
Abstract
Disclosed is an arterial access sheath for introducing an interventional device into an artery. The arterial access sheath includes an elongated body sized and shaped to be transcervically introduced into a common carotid artery at an access location in the neck and an internal lumen in the elongated body having a proximal opening in a proximal region of the elongated body and a distal opening in a distal region of the elongated body. The internal lumen provides a passageway for introducing an interventional device into the common carotid artery when the elongated body is positioned in the common carotid artery. The elongated body has a proximal section and a distalmost section that is more flexible than the proximal section. A ratio of an entire length of the distalmost section to an overall length of the sheath body is one tenth to one half the overall length of the sheath body.
435 Citations
22 Claims
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1. A method for introducing an interventional device into a common carotid artery, the method comprising:
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collectively introducing an arterial access sheath and a first dilator into a common carotid artery via a carotid access needle puncture site, wherein the first dilator is positioned within the arterial access sheath, wherein; a) the arterial access sheath includes a sheath body sized and shaped to be introduced into the common carotid artery via the carotid artery access site, the sheath body defining an internal lumen that provides a passageway for introducing a catheter into the common carotid artery when the sheath body is positioned in the common carotid artery; and b) the first dilator has a tapered distal tip sized and shaped to dilate the needle puncture site to a larger diameter for insertion of the arterial access sheath into the artery, the first dilator having an internal lumen to allow the dilator to be inserted over a sheath guidewire into an artery, wherein at least a portion of the first dilator has a first bending stiffness; removing the first dilator from the arterial access sheath; and introducing an elongated second dilator into the internal lumen of the sheath body while the sheath body is positioned within the common carotid artery, the second dilator having a tapered distal tip, the second dilator having an internal lumen to allow the second dilator to be inserted over a guidewire into an artery, wherein the second dilator has a distal region having a second bending stiffness less than the first bending stiffness of the first dilator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification