SYSTEM AND METHODS FOR CONTROLLING RETROGRADE CAROTID ARTERIAL BLOOD FLOW
First Claim
1. A retrograde flow system for treating an artery, comprising:
- an arterial access device adapted to be introduced into an artery and receive blood flow from the artery;
a shunt fluidly connected to the arterial access device, wherein the shunt provides a pathway for blood to flow from the arterial access device to a return site;
a flow control assembly coupled to the shunt and adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state; and
a shut-off valve assembly that regulates fluid flow through the shunt, wherein the shut-off valve assembly automatically blocks fluid flow through the shunt in response to injection of the fluid into the arterial access device.
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Accused Products
Abstract
A retrograde flow system is configured for treating an artery. The system includes an arterial access device adapted to be introduced into an artery and receive blood flow from the artery. A shunt fluidly is connected to the arterial access device, wherein the shunt provides a pathway for blood to flow from the arterial access device to a return site. A flow control assembly is coupled to the shunt and is adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state. A shut-off valve assembly automatically blocks fluid flow through the shunt in response to injection of the fluid into the arterial access device.
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Citations
22 Claims
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1. A retrograde flow system for treating an artery, comprising:
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an arterial access device adapted to be introduced into an artery and receive blood flow from the artery; a shunt fluidly connected to the arterial access device, wherein the shunt provides a pathway for blood to flow from the arterial access device to a return site; a flow control assembly coupled to the shunt and adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state; and a shut-off valve assembly that regulates fluid flow through the shunt, wherein the shut-off valve assembly automatically blocks fluid flow through the shunt in response to injection of the fluid into the arterial access device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for accessing and treating the carotid or cerebral artery, comprising:
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forming a penetration in a wall of a carotid artery; positioning an access sheath through the penetration; blocking blood flow from the common carotid artery past the sheath; allowing retrograde blood flow along a retrograde flow pathway from the carotid artery into the sheath and from the sheath via a flow path to a return site; and injecting a fluid into the carotid artery via the access sheath, wherein injection of the fluid automatically causes flow to be blocked through the retrograde flow pathway. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method as in clam 20, wherein the bypass includes a one-way valve that prevents fluid from flowing through the bypass during injection of fluid into the fluid line
Specification