| 摘要 |
<p>1,212,781. Intravenal apparatus. ABBOTT LABORATORIES. 1 Jan, 1968 [9 Jan., 1967], No. 189/68. Heading A5R. [Also in Division F2] A device for controlling the intravenous feeding of liquids through a flexible tube comprises a first part 6 having a flat disc-like portion 12 provided with a post 14 which rotatably mounts a second part 8. The two parts are assembled by aligning cut-outs 30, 62 in part 8 with projections 38, 40 on part 6, locating the second part on the post 14, and then rotating the second part 8 by means of finger grip 50 to the position shown in which the projections prevent axial displacement of part 8. The flexible tube is then passed through the end 22 of a slot in portion 12 and through cut-out 30 and displaced leftwards until a portion thereof is closed by the narrow part 24 of the slot in portion 12 (see Fig. 4). Clockwise rotation of part 8 then causes cam surface 32 thereon to variably collapse the remaining portion of the tube to control the flow. The drops per minute is indicated by graduations on surface 26.</p> |
