| 摘要 |
<p>A medical suction pump has a fluid collection jar 1 and a diaphragm pump 2. The pump 2 has a lower rigid plate 20 that is sealed at its edge to the jar, and an upper flexible plate 31 which is coupled to a drive unit 40 and which can be detached from the lower plate so that the lower plate and jar 1 can be disposed of, whilst the upper plate is retained with the drive unit. In one arrangement, the pump 2 has one-way valves 27 and 36 which enable it to create a reduced gas pressure in the jar so that fluid is drawn into the jar without passing through the pump chamber 39. In another arrangement, the fluid is pumped through the pump chamber (39 min ). In this arrangement the upper plate (31 min ) is preferably disposed of with the lower plate and the suction jar which could be a flexible bag (1 min ).</p> |
