| 摘要 |
<p>A disposable infant sputum removing device comprises a fluid suction tube (1), one-way valves (2,4) and a negative pressure balloon (3).The fluid suction tube (1) is connected to the negative pressure balloon (3) via the one-way valve (2), the other one-way valve (4) is provided on the other end of the negative pressure balloon (3) opposite to the one-way valve (2).</p> |
