| 摘要 |
An intravenous (IV) flow controlling device comprises a flexible open container having a specific gravity less than one and an outer diameter smaller than that of the drip chamber, the container including a spherical bottom portion thinner than the shell upper portion thereof; a first plastic tube coupled to the bottom of the container being in communication with the exit; a flexible reservoir having one end coupled to the first tube; and a second plastic tube coupled to the other end of the reservoir being in communication therewith. The container is submerged as fluid filled in the drip chamber. Fluid flows through the exit, the first plastic tube, the reservoir, and the second plastic tube to cause the container to fall, thereby stopping fluid exiting when the bottom portion of the container clogs the exit and fluid in the drip chamber is used up. The reservoir is capable of being squeezed to force solution stored in the reservoir to reverse flow through the first tube to disengage the container from the exit. The device functions normally when solution is used up, abnormal solution dropping, drip chamber shaken, or drip chamber slanted.
|
