| 摘要 |
A pumping system for use in medical applications where liquids must be infused and aspirated, and which is cost effective to simply dispose of it after a single use. The system features positive displacement pump(s) (64, 80) such as reciprocating pump(s) which may contain a damping mechanism to dampen out the peaks and valleys in the fluid pressure that is pumped, which is important for preventing cavitation. Embodiments furthermore feature a shut-off valve (76) on the extraction side so that certain injected fluids such as contrast medium, are not immediately pumped out of the patient. In a preferred embodiment, the system also features means for independently controlling the fluid pressure/volume on the infusion and extraction sides, self-priming capability, a continuous fluid path, and visual air bubble detection (20), with viewports located at important points in the fluid path, such as at pumps and valves. |
