Cannula with associated filter
First Claim
Patent Images
1. An arterial cannula with associated filter, comprising:
- a blood cannula having an outer surface, a distal end adapted to enter an artery, a proximal end adapted to receive blood from a bypass-oxygenator machine, and a lumen which extends longitudinally from the proximal to the distal end;
a pressurizing cannula shaped to receive the blood cannula;
an inflation seal attached to the pressurizing cannula which is expandable between a deflated condition and an inflated condition;
a mesh having a first edge attached to the inflation seal; and
a handle slidably disposed about the pressurizing cannula and enclosing the mesh and inflation seal when the inflation seal is in the deflated condition, wherein the handle can be moved in a proximal direction to release the inflation seal and allow it to be activated to an inflated condition.
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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.
883 Citations
6 Claims
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1. An arterial cannula with associated filter, comprising:
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a blood cannula having an outer surface, a distal end adapted to enter an artery, a proximal end adapted to receive blood from a bypass-oxygenator machine, and a lumen which extends longitudinally from the proximal to the distal end; a pressurizing cannula shaped to receive the blood cannula; an inflation seal attached to the pressurizing cannula which is expandable between a deflated condition and an inflated condition; a mesh having a first edge attached to the inflation seal; and a handle slidably disposed about the pressurizing cannula and enclosing the mesh and inflation seal when the inflation seal is in the deflated condition, wherein the handle can be moved in a proximal direction to release the inflation seal and allow it to be activated to an inflated condition. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification