Patent ID: 9669207
Date: 2017-06-06
CPC Classifications: A61M,F16K,Y10T

Claim:
1. A medical stopcock device comprising: a housing configured to allow a flow of liquid therethrough; and a cock configured to fit in the housing and switch flow paths of the liquid flowing through the housing, wherein the housing comprises: wherein (i) a height of an inward facing wall of the side tube port section that is adjacent to the downstream port section and defines the second communication hole is greater than (ii) a height of an inward facing wall of the side tube port section that is adjacent to the upstream port section and defines the first communication hole, such that (i) an area of an opening into the second communication hole at a smallest portion of the second communication hole is smaller than (ii) an area of an opening into the first communication hole at a smallest portion of the first communication hole, wherein the cock comprises: wherein, when the cock is at a reference position, the upstream port section, the side tube port section, and the downstream port section communicate with each other in a manner such that the first flow path groove communicates with the upstream port section and the first communication hole in the side tube port section, and the second flow path groove communicates with the second communication hole in the side tube port section and the downstream port section.