| 摘要 |
A gastric tube positioning method includes an improved check valve operative in cooperation with a gastric tube positionable within a patient. Should mis-alignment of the tube occur, including introduction of the tube into the lung region of a patient, the other distal end of the tube positioned within a container of fluid will emit a plurality of bubbles indicating lung positioning of the tube wherein the improved check valve assembly prevents said fluid from introduction into the lung cavity. |
