| 摘要 |
<p>A manually-operated surgical evacuator for draining fluids from the human body. The evacuator is constituted by a cup of rigid material covered by an elastic membrane to define a sump chamber, the cup being provided with an inlet fixture and an exhaust fixture communicating with the chamber. The inlet fixture is coupled by a suitable tube to the wound to be drained, and the exhaust fixture is provided with a removable plug or other means to open and shut the exhaust. Attached to the membrane is a rigid disc functioning as an actuator, such that when the plug is removed and the disc pressed into the cup, the membrane is stretched inwardly and acts to displace the atmosphere through the open exhaust fixture. After the exhaust fixture is shut and the disc released, the membrane proceeds to return to its original form, thereby creating a negative pressure which acts to draw fluid from the wound through the tube and into the sump chamber.</p> |
