IMPLANTABLE PUMP SYSTEM HAVING A COAXIAL VENTRICULAR CANNULA
First Claim
1. An implantable cardiovascular pump system comprising,a housing configured to be implanted at a patient'"'"'s heart;
- a pump assembly disposed within the housing having a vibrating membrane;
an outflow cannula in fluid communication with the pump assembly, the outflow cannula having an inlet and an outlet; and
an inflow cannula in fluid communication with the pump assembly, the inflow cannula having an inlet and an outlet,wherein the vibrating membrane is configured to transfer blood from the inlet of the inflow cannula through the housing and out the outlet of the outflow cannula, and wherein the outflow cannula is disposed coaxially within the inflow cannula.
1 Assignment
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Accused Products
Abstract
An implantable cardiovascular blood pump system is provided, suitable for use as a left ventricular assist device (LVAD) system, having an implantable cardiovascular pump, an extracorporeal battery and a controller coupled to the implantable pump, and a programmer selectively periodically coupled to the controller to configure and adjust operating parameters of the implantable cardiovascular pump. The implantable cardiovascular blood pump includes a coaxial inflow cannula and outflow cannula in fluid communication with one another and with a pumping mechanism. The pumping mechanism may be a vibrating membrane pump which may include a flexible membrane coupled to an electromagnetic actuator assembly that causes wavelike undulations to propagate along the flexible membrane to propel blood through the implantable cardiovascular pump. The implantable cardiovascular pump may be programmed to operate at frequencies and duty cycles that mimic physiologic flow rates and pulsatility while avoiding thrombus formation, hemolysis and/or platelet activation.
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Citations
20 Claims
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1. An implantable cardiovascular pump system comprising,
a housing configured to be implanted at a patient'"'"'s heart; -
a pump assembly disposed within the housing having a vibrating membrane; an outflow cannula in fluid communication with the pump assembly, the outflow cannula having an inlet and an outlet; and an inflow cannula in fluid communication with the pump assembly, the inflow cannula having an inlet and an outlet, wherein the vibrating membrane is configured to transfer blood from the inlet of the inflow cannula through the housing and out the outlet of the outflow cannula, and wherein the outflow cannula is disposed coaxially within the inflow cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable cardiovascular pump system comprising,
a pump housing configured to be implanted at a patient'"'"'s heart; -
a pump assembly having a vibrating membrane disposed within the pump housing; an inflow cannula having an inlet configured to be inserted into a left ventricle and an outlet in fluid communication with the pump assembly; an outflow cannula having an inlet in fluid communication with the pump assembly and an outlet configured to be inserted into the left ventricle; and an outflow conduit with a first end and a second end, the first end coupled to the outlet of the outflow cannula, wherein the vibrating membrane is configured to vibrate to transfer blood from the inlet of the inflow cannula, through the pump housing, through the outflow cannula, and out the second end of the outflow conduit, and wherein outflow cannula is disposed coaxially within the inflow cannula. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A left ventricular assist device (LVAD) system comprising,
a pump housing configured to be implanted in a patient'"'"'s heart; -
an outflow conduit with a first end and a second end, the second end configured to extend through an aortic valve; a pump assembly having a vibrating membrane and disposed within the pump housing with a coupling section configured to removably couple the pump assembly to the first end of the outflow conduit; and an inflow cannula coupled to the pump housing and in fluid communication with the pump assembly, wherein the vibrating membrane is configured to vibrate to move blood from the inlet of the inflow cannula through the pump housing and out the second end of the outflow conduit, and wherein the outflow conduit is disposed coaxially within the inflow cannula.
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19. An implantable cardiovascular pump system comprising,
a pump housing configured to be implanted at a patient'"'"'s heart; -
a pump assembly disposed within the pump housing; an inflow cannula in fluid communication with the pump assembly; an outflow conduit with a first end and a second end, the first end in fluid communication with the pump assembly; and a stent mounted valve configured to be implanted at the aortic valve and coupled to the second end of the outflow conduit, the stent mounted valve configured to permit blood flow in only one direction, wherein the implantable cardiovascular pump is configured to move blood from the inflow cannula, through the pump housing, through the outflow conduit and out of the stent-mounted valve. - View Dependent Claims (20)
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Specification