Patent ID: 9631730
Date: 2017-04-25
CPC Classifications: A61B,F04B,F16K

Claim:
1. A valve comprising: a valve housing including a first opening portion and a second opening portion; and a diaphragm including a hole portion and configured to define in the valve housing a first valve chamber configured to communicate with the first opening portion and a second valve chamber configured to communicate with the second opening portion; wherein a portion of the diaphragm surrounding the hole portion is in contact with a portion of the valve housing such that the portion of the valve housing covers the hole portion; and a flow channel formation portion is provided in at least a portion of a wall portion of the second valve chamber, a portion of the flow channel formation portion being arranged to oppose a portion of the hole portion, the flow channel formation portion defining a flow channel connecting the first valve chamber and the second valve chamber when the portion of the diaphragm surrounding the hole portion makes contact with the wall portion.