| 摘要 |
<p>A dialyser has a membrane assembly (14) comprising two U-shaped conduits partially defined and separated, by a transfer membrane wall. The walls of the conduits are provided with furrowing at an inclination to the direction of flow through the conduit. Blood is pumped through one conduit by a roller pump (16) in series with a reciprocatory pump (18) and dialysate is pumped in counter current through the other conduit by a roller pump (23) in series with a reciprocatory pump (25). The reciprocatory pumps (18, 25) are operated in phase so that the resulting pulsatile component in the two conduits is in phase. This pulsatile flow, in conjunction with the furrows, produces vortexes in, and good mixing of, the blood and dialysate in their respective conduits and hence enhanced contact of each of these liquids with the transfer membrane wall. </p> |
