Portable Lung Assist Device
AssigneesThe Regents of the University of California, The United States Government as represented by the Department of Veterans Affairs
InventorAbbas Ardehali
Life of this patent
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Abstract
The present invention relates to a portable lung assist device. In one embodiment, the portable lung assist device comprises an integrated oxygenator, blood pump, and cannula. In one embodiment, the portable lung assist device of the present invention does not require an oxygen tank, but instead can provide oxygen to a subject's blood from ambient air. In one embodiment, at least a portion of the portable lung assist device, for example the cannula can be implantable. In one embodiment, the cannula of the device of the present invention can be inserted in to the subject's pulmonary artery. A method for providing portable lung assistance is also described.
Claims20
A portable lung assist device, comprising:
- an oxygenator, having a first chamber and a second chamber, the first chamber having an inlet and an outlet, the second chamber having an inlet and an outlet, and a membrane separating the first chamber and the second chamber;
- a means for supplying a sweep gas to the inlet of the first chamber of the oxygenator;
- a cannula, having a first lumen and a second lumen;
- and
- a pump;
- wherein the first lumen is connected to the pump, the pump is connected to the inlet of the second chamber of the oxygenator via a third lumen, and the second lumen is connected to the outlet of the second chamber of the oxygenator;
- wherein when the first lumen and second lumen are also connected to a blood vessel of a subject, blood can flow from the subject through the first lumen, through the pump, through the third lumen, through the second chamber of the oxygenator, and through the second lumen back into the subject;
- and
- wherein the subject's blood can be oxygenated via transfer of oxygen across the membrane in the oxygenator.
The device of claim, wherein the pump is an axial pump.
A method for providing portable lung assistance comprising:
- providing a pump, a power supply electrically coupled to the pump, and an oxygenator for attachment to the body of a patient for portable mobility;
- positioning a dual lumen cannula tip within a target site in a heart of the patient, wherein the cannula is in fluid communication with the pump and the oxygenator;
- drawing blood from a patient via the cannula;
- delivering the blood to a first chamber of the oxygenator so that the blood flows through the first chamber;
- delivering a sweep gas to a second chamber of the oxygenator, wherein the first and second chambers are separated by a membrane, and wherein carbon dioxide is transferred out of the blood through the membrane and oxygen is transferred into the blood through the membrane as the blood flows through the first chamber;
- and
- delivering the oxygenated blood back to the patient via the cannula.
Dependencies are inferred from the claim text.