| 摘要 |
An adjustable flange for a tracheostomy tube has a circular aperture and two semi-circular arms hinged with one another by an integral flexible web. One arm has a smooth surface that is slidable along the tube; and the other arm has circumferential ribs that bite into the surface of the tube. A bolt passes through one arm and into a threaded recess of the other enabling the flange to be locked in position. |
