| 摘要 |
The invention relates to a cardiac massage cup (20) which includes a cup shaped member (30) defining a cavity having an apical section (32) and a basal section (34). A liner (50) of flexible material is contained within the cavity with its upper end connected to the cup shaped member (30) at a predetermined distance from the upper end of the apical section (32) and its lower end (54) connected to the cup shaped member a predetermined distance from the basal section (34), the middle portion of the liner being left free from the cup shaped member to form an annular diaphragm (56) which contacts the ventricular surface of a heart. A first inlet (60) communicates with the space between the diaphragm and the cup shaped member to receive alternately applied relatively high positive and negative fluid pressures. A second inlet (70) communicates with the interior of the cup shaped member to receive a vacuum for holding the cup shaped member in a predetermined position. A first pressure transducer (80) is positioned within the first inlet (70) for measuring the pressure within the space between the liner and cup shaped member, and a second pressure transducer (80) is positioned within the second inlet (70) for measuring the vacuum holding the cup shaped member in said predetermined position. When the cup shaped member (30) is placed loosely over the lower portion of a heart, the apex of the heart will be positioned within the cup shaped member proximate the apical section (32) thereof, the basal section (34) of the cup shaped member will extend only so far as the atrial region of the heart, and the middle portion of the liner (50) that forms the annular diaphragm (56) will contact the ventricular surface of the heart. Relatively high positive and negative pressures alternately applied via the first inlet (60) to the space between the diaphragm (56) and the cup shaped member (30) will transfer pressures to the ventricular surface of the heart to provide systolic and diastolic effects on the heart, and a vacuum applied via the second inlet (70) will hold the heart in position on the cup shaped member, and the heart will be mechanically pumped. <IMAGE> |
