Pressure actuated single-lumen blood pumping device

摘要

A pressure actuated single-lumen blood pumping device has a housing (4) having a wall (19) bounding a pressure transfer chamber (11; 411). The housing (4) bounds a pressure transfer port (9) for connection to a pressure source, the pressure transfer port (9) communicating with the pressure transfer chamber (11; 411) for alternatingly transferring over pressure and under pressure from the pressure source to the pressure transfer chamber (11; 411). A flexible tubular membrane (2; 102; 202; 302; 402) is arranged in the pressure transfer chamber (11; 411). A blood transfer conduit (3; 103; 203; 303; 403) passes through the wall (19) bounding the pressure transfer chamber (11; 411) and the blood transfer conduit (3; 103; 203; 303; 403) connects to opposite ends (5, 6; 105; 405, 406) of the flexible tubular membrane (2; 102; 202; 302; 402).

主权项

1. A pressure actuated single-lumen blood pumping device comprising:
a housing having a wall bounding a pressure transfer chamber, the housing comprising a pressure transfer port for connection to a pressure source, the pressure transfer port communicating with the pressure transfer chamber for alternatingly transferring overpressure and under pressure from the pressure source to the pressure transfer chamber; a flexible tubular membrane in the pressure transfer chamber, the flexible tubular membrane having opposite ends and bounding a blood chamber; and a blood transfer conduit passing through the wall and having a single-lumen portion, a first lumen branch, and a second lumen branch, wherein the first and second lumen branches are in fluid communication with each other and the single-lumen portion at a common junction therebetween; wherein the blood transfer conduit has a first proximal end at an end of a first one of the lumen branches and a second proximal end at an end of a second one of the lumen branches, the first proximal end being coupled to a first one of the ends of the flexible tubular membrane and the second proximal end being coupled to a second one of the ends of the flexible tubular membrane.