322 are empty and completely collapsed the device is actuated by introducing fluid into the inflation pockets in the fig1 embodiment this is accomplished by the employment of a pressure monitoring syringe filled with saline or another suitable fluid a needle is attached to the syringe and then inserted through the patient 39 s skin 27 and into the septum 28 128 128 u2032 328 of the fluid access port 26 126 126 u2032 326 and the fluid is injected the injected fluid fills the fluid access port the inflation delivery line 30 130 130 u2032 330 u2032 flows through the recoil balloons 24 124 324 and finally enters the inflation pockets 22 122 322 the pressure of the inflation pockets is monitored by a pressure wave which occurs as the ventricle empties and refills the fluid level is increased in the pockets until there is always a positive pressure present this indicates that the inflation pockets 22 122 322 are in contact with the ventricle when it is systolic fig5 and 7 illustrate each of the first and second disclosed embodiments wherein the inflation pockets 22 and 122 respectively are in their filled state in the third embodiment shown in fig1 pressurized fluid will initially be introduced into the system from the pressurized fluid reservoir 280 through the one way valve 282 rather than manually via a syringe in all other respects operation of the third embodiment is substantially similar to that described above.