Systems and methods for treating a carotid artery
First Claim
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1. A system for use in accessing and treating a carotid artery, said system comprising:
- an arterial access device adapted to be introduced into a common carotid artery, wherein the arterial access device comprises a distal sheath adapted to enter the common carotid artery, an aspiration port communicating with an internal lumen of the distal sheath, and a proximal hemostasis valve assembly providing access to the internal lumen of the distal sheath for an interventional device;
the hemostasis valve assembly comprising;
(a) a housing defining an internal chamber that communicates with the internal lumen of the distal sheath, wherein the internal chamber is adapted to contain a liquid or gel;
(b) a first seal member that seals the internal chamber from the internal lumen of the distal sheath, the first seal member having a central passageway that opens for passage of an interventional device into the internal lumen of the distal sheath from the internal chamber, wherein the central passageway is closed in a default state to prevent passage of fluid across the first seal member;
(c) wherein, when the internal chamber is filled with liquid or gel, the liquid or gel prevents air from entering the internal lumen of the distal sheath via the hemostasis valve assembly when the internal lumen of the distal sheath is aspirated, via the aspiration port;
a second seal member, wherein the second seal member is positioned on a proximal end of the internal chamber and the first seal member is positioned on a distal end of the internal chamber so that the first seal member and second seal member define the internal chamber therebetween and can enclose liquid or gel within the internal chamber, and wherein the first seal member and second seal member are aligned along a common, straight axis;
and wherein the internal chamber is pre-filled with liquid or gel prior to a first use of the arterial access device.
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Abstract
Systems and methods are adapted for treating the carotid artery. The systems include interventional catheters and blood vessel access devices that are adapted for transcervical insertion into the carotid artery. Embodiments of the systems and methods can be used in combination with embolic protection systems including blood flow reversal mechanisms, arterial filters, and arterial occlusion devices.
121 Citations
11 Claims
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1. A system for use in accessing and treating a carotid artery, said system comprising:
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an arterial access device adapted to be introduced into a common carotid artery, wherein the arterial access device comprises a distal sheath adapted to enter the common carotid artery, an aspiration port communicating with an internal lumen of the distal sheath, and a proximal hemostasis valve assembly providing access to the internal lumen of the distal sheath for an interventional device; the hemostasis valve assembly comprising; (a) a housing defining an internal chamber that communicates with the internal lumen of the distal sheath, wherein the internal chamber is adapted to contain a liquid or gel; (b) a first seal member that seals the internal chamber from the internal lumen of the distal sheath, the first seal member having a central passageway that opens for passage of an interventional device into the internal lumen of the distal sheath from the internal chamber, wherein the central passageway is closed in a default state to prevent passage of fluid across the first seal member; (c) wherein, when the internal chamber is filled with liquid or gel, the liquid or gel prevents air from entering the internal lumen of the distal sheath via the hemostasis valve assembly when the internal lumen of the distal sheath is aspirated, via the aspiration port; a second seal member, wherein the second seal member is positioned on a proximal end of the internal chamber and the first seal member is positioned on a distal end of the internal chamber so that the first seal member and second seal member define the internal chamber therebetween and can enclose liquid or gel within the internal chamber, and wherein the first seal member and second seal member are aligned along a common, straight axis; and wherein the internal chamber is pre-filled with liquid or gel prior to a first use of the arterial access device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification