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    • 9. 发明专利
    • ES175422Y
    • 1972-12-16
    • ES175422
    • 1969-10-10
    • RHONE-POULENC, S. A.
    • A61M16/04A61H
    • 1,256,557. Tracheal tubes. RHONE-POULENC S.A. 9 Oct., 1969 [10 Oct., 1968], No. 49740/69. Heading A5R. [Also in Division F2] A tracheal tube consists of a main tube 1 having a side orifice 2 and rounded ends 3 a first lateral tube 10 having a portion 11 of reduced external diameter which fits closely within orifice 2, a second lateral tube 12 slidable within tube 10 and having a rim 13 which prevents tube 12 extending substantially into the main tube 1, and a clip 14 fitted within tube 10 and outside tube 12 and having hooks 15, 16 which when the clip is fully inserted within tube 10 engage with the inner surface of main tube 1 and ring 17 abuts against end 18 of tube 10 thus holding the latter in position with respect to the main tube. The angle α between the lateral tubes and a plane perpendicular to the longitudinal axis of the main tube is preferably between 10‹ and 30‹. In Figure 2 (not shown) the main tube is of modified construction consisting of three sections (4, 5, 6), (it may alternatively be of two sections), screwed together. The tubes may be made of a suitable plastics material, e.g. polytetrafluoroethylene, and the clip is preferably of a stainless metal.