| 摘要 |
A fitting for endotracheal apparatus to receive an endoscopic tube or the like comprises a sleeve in which a slit through foam body is encompassed and seized under longitudinal compression, radial compression at the inner end and partially relieved pressure at the outer end. The foam body is normally of bell, or mushroom, shape with an elongated cylindrical shank rounded inner end, flat outer end and an enlarged diameter lip at the outer end. The sleeve includes a head joined to a tapered stem by a truncated conical, inward flared section, the head having a circular outer edge. A cap having an annular top rim defining a central opening, has an integral skirt fitted tightly around the head so that the foam body is compressed longitudinally between the annular rim of the cap and the inward flared section of the sleeve. It is compressed radially by the inward flared section and the pressure is relieved at the opening in the cap by the foam protruding into the opening and into the space between the cap rim and the edge of the head.
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