Cannula with associated filter and methods of use during cardiac surgery
First Claim
Patent Images
1. A method for protecting a patient from embolization, comprising the steps of:
- providing a blood filter device;
introducing the blood filter device into the patient'"'"'s aorta;
deploying the filter at a site within the patient'"'"'s aorta;
blocking the aorta in a region upstream of the site within the patient'"'"'s aorta; and
removing the blood filter device from the patient'"'"'s aorta.
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Accused Products
Abstract
Devices and methods for filtering blood. The devices generally comprise: a mesh for filtering blood flowing within a blood vessel, particularly within an artery such as the aorta; a structure adapted to open and close the mesh within the blood vessel; and a means to actuate the structure. The methods generally include the following steps: introducing a mesh into a blood vessel to entrap embolic material; adjusting the mesh, if necessary, during the course of filtration; and removing the mesh and the entrapped foreign matter from the blood vessel. Additionally, visualization techniques are used to ensure effective filtration.
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Citations
20 Claims
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1. A method for protecting a patient from embolization, comprising the steps of:
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providing a blood filter device; introducing the blood filter device into the patient'"'"'s aorta; deploying the filter at a site within the patient'"'"'s aorta; blocking the aorta in a region upstream of the site within the patient'"'"'s aorta; and removing the blood filter device from the patient'"'"'s aorta. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for protecting a patient from embolization, comprising the steps of:
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providing a blood filter device; introducing the blood filter device into the patient'"'"'s aorta; blocking the aorta; deploying the filter at a site within the patient'"'"'s aorta; unblocking the aorta in a region upstream of the site within the patient'"'"'s aorta; and removing the blood filter device from the patient'"'"'s aorta. - View Dependent Claims (17, 18)
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19. A method for protecting a patient from embolization, comprising the steps of:
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providing a cannula adapted to receive a separately insertable filter; introducing the cannula into the patient'"'"'s aorta; introducing the filter through the cannula into the patient'"'"'s aorta; deploying the filter at a site within the patient'"'"'s aorta; manipulating the aorta in a region upstream of the site within the patient'"'"'s aorta; and removing the filter from the patient'"'"'s aorta.
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20. A method for protecting a patient from embolization, comprising the steps of:
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providing a blood filter device; introducing the blood filter device into the patient'"'"'s aorta; deploying the filter at a site within the patient'"'"'s aorta while the heart is beating; and removing the blood filter device from the patient'"'"'s aorta.
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Specification