Introducer assembly
AssigneeTerumo Kabushiki Kaisha
InventorsRyo Okamura, Takayuki Mouri, Junko Kuniyasu
Life of this patent
Estimating the term…
Abstract
An introducer assembly is composed of an introducer sheath and a dilator which have been previously integrated with each other to permit the hemostatic valve to exhibit its hemostatic function over an extended period of time without significantly adversely affecting the inherent function of the dilator tube. The introducer assembly includes a dilator tube passing through a passage of a hemostatic valve. The introducer assembly has a deforming member arranged between the hemostatic valve and a cap. As the cap is pushed toward the proximal end surface of a sheath hub for engagement with the sheath hub, the cap presses the hemostatic valve and applies a compressive force to the hemostatic valve in such a direction as to close the passage.
Claims9
An introducer assembly comprising:
- an introducer sheath comprised of a sheath tube possessing a proximal end, a sheath hub attached to the proximal end of the sheath tube and possessing a proximal end portion, and a hemostatic valve attached to the proximal end portion of the sheath hub, the hemostatic valve possessing a through passage for a catheter to pass through;
- a dilator comprised of a dilator tube and a dilator hub, the dilator tube possessing a proximal end, the dilator hub being attached to the proximal end of the dilator tube;
- a cap positioned between the sheath hub and the dilator hub, the cap possessing a through-hole;
- the dilator tube passing through the through-hole of the cap and passing through the through passage of the hemostatic valve;
- the cap being positioned in a first position in which an engaging member on the cap and the sheath hub are not engaged with one another, the cap being axially movable in a distal direction to a second position in which the engaging member on the cap and the sheath hub engage one another to hold the cap at the second position;
- and
- a deforming member positioned between the hemostatic valve and the cap to press the hemostatic valve as the cap is moved to the second position to apply a compressive force to the hemostatic valve that causes closure of the through passage in the hemostatic valve;
- wherein the hemostatic valve includes one side surface facing the cap and an opposite side surface, the through passage in the hemostatic valve being comprised of first and second slits which intersect each other, the first slit opening to the one side surface of the hemostatic valve and not opening to the opposite side surface, and the second slit opening to the opposite side surface and not opening to the one side surface;
- and
- wherein, when the cap is moved to the second position, the hemostatic valve is pressed from the one side surface facing the cap by the deforming member so that the hemostatic valve bends along the first slit and the passage is closed at least in the one side surface such that the passage becomes closed.
Dependencies are inferred from the claim text.