Method and apparatus for pumping blood
First Claim
1. A pump system for pumping blood through a body passageway, the pump system comprising:
- a distal section having at least one inlet to receive blood;
a pumping section in fluid communication with the distal section to receive blood from the distal section, the pumping section having at least one outlet valve; and
a pump constructed and arranged to be positioned within the pumping section to draw blood into the pumping section in a first phase of operation and to pump blood out of the at least one outlet valve in a second phase of operation;
wherein the pump system is configured such that the at least one inlet is in fluid communication with the pumping section in both the first phase of operation and the second phase of operation.
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Accused Products
Abstract
At least one aspect of the invention is directed to a pump system for pumping blood though a body passageway. The pump system includes a distal section having at least one inlet to receive blood, a pumping section in fluid communication with the distal section to receive blood from the distal section, and a pump constructed and arranged to be positioned within the pumping section to draw blood into the pumping section in a first phase of operation and to pump blood out of the at least one outlet valve in a second phase of operation. The pump system may be configured such that the at least one inlet is in fluid communication with the pumping section in both the first phase of operation and the second phase of operation. At least one other aspect of the invention is directed to a pump system for pumping blood from one of the right atrium and the right ventricle to the pulmonary artery.
157 Citations
20 Claims
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1. A pump system for pumping blood through a body passageway, the pump system comprising:
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a distal section having at least one inlet to receive blood; a pumping section in fluid communication with the distal section to receive blood from the distal section, the pumping section having at least one outlet valve; and a pump constructed and arranged to be positioned within the pumping section to draw blood into the pumping section in a first phase of operation and to pump blood out of the at least one outlet valve in a second phase of operation; wherein the pump system is configured such that the at least one inlet is in fluid communication with the pumping section in both the first phase of operation and the second phase of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of pumping blood in a patient, the method comprising:
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inserting a cannula into an artery of a patient, the cannula having a distal end with an opening and a pumping portion, the pumping portion being in fluid communication with the opening in the distal end and the pumping portion having at least one outlet; drawing blood through the opening and into the pumping portion in a first phase of operation; and pumping blood out of the at least one outlet and out of the opening in a second phase of operation. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A pump system for pumping blood through a body passageway, the pump system comprising:
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a distal section having at least one inlet to receive blood; a pumping section in fluid communication with the distal section to receive blood from the distal section, the pumping section having at least one outlet valve; means for drawing blood into the pumping section in a first phase of operation and for pumping blood out of the at least one outlet valve in a second phase of operation, such that the at least one inlet is in fluid communication with the pumping section in both the first phase of operation and the second phase of operation.
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Specification