US 8,298,189 B2 · Hemostasis valve

Abstract

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 valve (150) is of the elongated duckbill type and having a slit (158) almost completely across the distal end wall (154) such that two diverging sides (156) of the distal valve portion may be moved apart during insertion therethrough of a dilator or a catheter. A two-part cap (180) is affixed to the hub proximal end (120) and traps a seating flange (168) of the valve between itself 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 seams (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.

Claims8

Dependent claims

A hemostasis valve seal for a tearaway sheath assembly, comprising:

a valve seal body extending from a proximal valve end to a distal valve end and defining an internal cavity extending from the proximal valve end toward the distal valve end, the proximal valve end includes a cylindrical wall defining a generally open end and tapered side walls extend from the cylindrical wall to the valve distal end which is generally closed except for a transverse slit through the distal valve end;
and
a pair of opposed frangible webs defined to extend axially along the valve seat body aligned with the transverse slit in a given plane, each frangible web includes a V-shaped groove extending along an inside surface of the valve seal body, each V-shaped groove tapering from the inside surface to a groove bottom which is spaced from an outside surface of the valve seal body.

Dependencies are inferred from the claim text.

Hemostasis valve

Life of this patent

Hemostasis valve

Life of this patent

Abstract

Claims8