Implantable pump system having a coaxial ventricular cannula

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.

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.

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.