| 摘要 |
An improved respiratory suction apparatus catheter comprising a manifold for attachment to the distal hub of an endotracheal tube to form a ventilation circuit, a catheter tube which is displaceable through the manifold and into the endotracheal tube to suction secretions from the tube and lungs, and at least one wiper seal disposed adjacent the ventilation circuit to minimize the draw of air from the ventilation circuit of a patient while the catheter is being cleaned. In a preferred embodiment of the invention, the catheter is cleaned more thoroughly than in the prior art while simultaneously drawing little or no air from the patient's ventilation circuit, thus extending the usable duration of the catheter apparatus. Another preferred embodiment comprises a valve, most preferably a flap valve distal of the wiper seal within the manifold, improves the cleaning of the catheter by selectively restricting or occluding the retracted catheter. |
