| 摘要 |
<p>Valve (27) for use with an introducer assembly (11) with a valve housing (19) for receiving the valve (27) to permit a medical instrument to be introduced therethrough. The valve (27) consisting of an elastic body (61) with a cylindrical wall (62) having an axially-extending bore (63). The body (61) is provided with a first planar wall (71) integral with one end of the cylindrical wall (62) and second wall (76) integral with the other end of the cylindrical wall (62). The first wall (71) has an opening (73) aligned with the bore (63) and a slit (81) in the second wall (76) extending diametrically of the bore (63) to provide first and second leaflets (82 and 83). The valve (27) permits a medical instrument to be introduced therethrough providing a seal between the valve (27) and the medical instrument. The second wall (76) has inner and outer surfaces (77 and 78) which are inclined outwardly from a plane extending perpendicular to the axis of the bore (63) to avoid prolapse of the leaflets (82 and 83) during removal of the instrument from the valve (27).</p> |
