Patent ID: 9662135
Date: 2017-05-30
CPC Classifications: A61B

Claim:
1. A fluid ejection device comprising: a pulsation giving unit for ejecting fluid in a fluid chamber; a fluid supplying unit configured to supply the fluid to the fluid chamber through a first channel; and an ejection pipe configured to communicate with a second channel, which communicates with the pulsation giving unit, and eject the fluid from an ejection port, wherein a cross-sectional area of the second channel is five times or more as large as a cross-sectional area of the first channel, a connecting part of the first channel and the fluid chamber and a connecting part of the second channel to the fluid chamber are arranged in positions opposed to each other with respect to a center of the fluid chamber; a guiding section configured to guide a user to use the fluid ejection device in a state in which the connecting part of the second channel and the fluid chamber is located above the connecting part of the first channel and the fluid chamber in the vertical direction; a suction channel for sucking the fluid present around the ejection port; a container configured to house at least a part of the ejection pipe, at least a part of fluid supplying channel connecting the fluid supplying unit and the first channel, the pulsation giving unit, and at least a part of the suction channel; and a suction adjusting mechanism for adjusting a degree of suction within in the suction channel, wherein: the suction adjusting mechanism includes an operation unit provided in the container and the guiding section is the operation unit, the connecting part of the second channel is arranged at a position closer to an edge of the fluid chamber than the connecting part of the first channel, the ejection pipe changes direction, the suction adjustment mechanism has a hole section communicating with the outside of the container and the suction channel, a point at which the ejection pipe changes direction is located closer to the ejection port than to the pulsation giving unit, and the point at which the ejection pipe changes direction, the hole section, and the pulsation giving unit are arranged in that order.