摘要 |
A tearaway sheath assembly (100) having a splittable sheath tube (102) a splittable hub (110), a splittable valve (150) and a split cap (180). The va lve (150) is of the elongated duckbill type and having a slit (158) almost c ompletely across the distal end wall (154) such that two diverging sides (15 6) of the distal valve portion may be moved apart during insertion therethro ugh of a dilator or a catheter. A two-part cap (180) is affixed to the hub p roximal end (120) and traps a seating flange (168) of the valve between itse lf and a seating groove (136) of the hub. Pairs of opposed gaps (184,122) of the cap (180) and the hub (110) are aligned with frangible sections or seam s (108) of the sheath tube (102) and frangible sections (172) and slits (166 ) of the valve, facilitating splitting of the assembly (100) when desired by the practitioner to peel it away from the inserted catheter.
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