| 摘要 |
The present invention discloses a medical apparatus for controlling flow to accurately regulate the dosage of drugs such as various kinds of injections which are administered into the body. In the disclosed medical apparatus for controlling flow, a part of an inner pipe member (110) with a constant external diameter is inserted inside and overlaps with an outer pipe member (120) with a constant internal diameter, so the apparatus controls the flow in a flow rate determined by the overlapping length and interval. The inner and outer pipe members of the apparatus can be structurally manufactured at a fixed density and installed with a metal pipe which is resistant to temperature variation. Therefore, reliability of flow control is enhanced. Especially, capillary action enables accurate control over a very small amount of flow, using an air gap at the overlapped part between the two metal pipes (figure 2). |
