| 摘要 |
A bladder evacuator pump includes a nozzle (30) and a bulb (28) mounted at opposite ends of a barrel (2). A filter cartridge (8) includes filter support discs (10 and 12) and a seating plate 14 having apertures (16) therethrough. A filter element (18) is mounted on and extends between the support discs (10 and 12), and a central tube 20 extends along the filter element (18) from a central aperture in the support disc (12). A rubber flap member (66) having a circular flap member (74), is mounted on the lower face of the seating plate (14) by a clip (76). The outer region of the flap member (66) is dimensioned to close the aperture (16), and the flap member (74) closes the lower end of the central tube (20). With the device full of liquid, the bulb (28) is compressed causing the flap member (66) to close the apertures (16) so as to close the efflux path (26), and the flap (74) to open the tube (20) to open the flushing path (24). The squeezing of the bulb (28) causes liquid to flow through the pump and into a body cavity. Release of the bulb (28) allows it to expand and draw liquid f and debris (34) from the body cavity into the efflux path (26). This release of the bulb (28) causes the flap (74) to close the tube (20) and the flap member (74) to open the apertures (16) thereby closing the flushing path (24) and opening the efflux path (26). |
