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[13] [14] [15] In some pulsatile pumps (that use compressed air as an energy source [16]), the volume occupied by blood varies during the pumping cycle. If the pump is contained inside the body then a vent tube to the outside air is required. Continuous-flow VADs are smaller and have proven to be more durable than pulsatile VADs. [17]
A centrifugal artificial heart which alternately pumps the pulmonary circulation and the systemic circulation, causing a pulse, has been described. [90] Researchers have constructed a heart out of foam. The heart is made out of flexible silicone and works with an external pump to push air and fluids through the heart.
Impella heart pumps are percutaneous microaxial pumps that act as mechanical circulatory support devices in patients in need of hemodynamic support. [11] The pumps are mounted on support catheters and typically inserted through the femoral artery, although axillary and subclavian artery approaches are not uncommon. [12]
During a protected percutaneous coronary intervention (Protected PCI) procedure, "the Impella 2.5 heart pump helps maintain a stable heart function by pumping blood for the heart. This gives a weak heart muscle an opportunity to rest and reduces the heart’s workload, preventing the heart from being overstressed by the procedure as coronary ...
VADs are used in patients too old or ill for a heart transplant, or to keep a patient alive until a heart becomes available for transplantation surgery. [5] In December 1995 Thoratec received FDA approval to sell its Thoratec Ventricular Assist Device System, an external blood pump with cannulae connecting the pump to the patient's heart and ...
The pumps, left-sided Impella heart pumps made by Johnson & Johnson MedTech’s Abiomed, have been linked to more than 100 serious injuries, including 49 deaths.
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