| 摘要 |
<p>1,241,597. Medical infusion. BAXTER LABORATORIES Inc. 14 July, 1969 [16 Oct., 1968], No. 35318/69. Heading A5R. [Also in Division F2] Roller clamp unit for controlling fluid flow through a plurality of flexible tubes, e.g. in the administration of parenteral fluids and collection of blood, comprises a body 20 having a channel provided at each of two opposite sides with a track 23 whereby a roller 30 is mounted for rotation and movement along the tracks. The roller has at least two cams 34 cooperable with inclined planes 27, 28 arranged selectively to compress and release the tubes by movement of the roller along the channel. In medical thoracentesis, two tubes can be connected through a Y-tube to a syringe, the opposite ends being connected to a needle and a reservoir, so that the syringe can be used to force fluid into the reservoir without repeated insertion and removal of the needle from the patient, whilst the problem of valve blockage from clots as in conventional stop- and a reservoir, so that the syringe can be administered at different adjustable rates through the Y-tube. A three-tube construction may be provided for an ascitic fluid infusion procedure which employs sequential administration of dextrose solution and withdrawal and reinjection of ascitic fluid. The device is preferably of moulded plastic, e.g. polyethylene or polypropylene.</p> |
