| 摘要 |
Tracheal catheter from the flexible material has an ending segment (2) whose output forms a terminal opening (3) leaned in the direction of the axis of a body (1). Side outlets (4) are distributed on the circumference above the terminal opening (3); these side outlets (4) are leaning towards the terminal opening (3). The side outlets (4) are distributed equally angularly on the circumference of the ending segment (2) in such a way that the even flowing out of the breath gas towards the trachea's walls on the circumference is achieved. The surface of the terminal opening (3) is smaller than 90% of the surface of the flow cross-section of the body (1) and the total surface of the cross-section of the side outlets (4) is at least 10% of the surface of the terminal opening (3). The ending segment (2) can have an outer tightening towards the terminal opening (3), which is formed by transition from the diameter of the tubular body (1) towards the diameter of the terminal opening (3). The tightening can be gradual, stepless, and, for example, conical with the apex angle ranging from 30° to 90°. The catheter can be advantageously used for patients bordering on respiratory insufficiency or during the terminal disconnection of the patient from the lung ventilator. |
