| 摘要 |
An anti-occlusion fitting 50 for a paediatric tracheostomy tube (1) has concentric inner and outer tubular members 51, 52. The inner member 51 is push fitted onto the tube 1 and has openings 54 communicating with an annular air passage between the inner and outer members. The outer member 5 also has openings 60 through its wall set in an annular groove 61 around its outer surface, so that air can flow into the tube 1 via the openings 60, the annular air passage and the openings 54 if the proximal end of the fitting is occluded. In an alternative embodiment (Figs 1-4), the openings in the inner tubular member are provided by a castellated proximal end of the tubular member extending beyond the corresponding end of the outer tubular member. Connection can be made to the tube 1 by female connectors of different size pushed onto the inner or outer tubular members. <IMAGE>
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