Patent ID: 8262671

Claim:
A vascular introducer comprising: a) a proximal hub portion which defines an interior bore and an outer engagement surface, the interior bore configured to receive a dilator having a proximal end and a distal end, the outer engagement surface configured to engage a locking collar coupled to the dilator; b) an elongated sheath extending distally from the hub portion and defining a lumen in communication with the interior bore of the hub portion, the lumen configured to receive the dilator; and c) a hemostatic valve disposed within the bore of the proximal hub portion and having a passage extending therethrough, the hemostatic valve including a sealing flap and a distal end wall, the sealing flap having a convex portion movable between an open position relative to the passage and a closed position relative to the passage, the distal end wall defining a concave seat opposite the sealing flap, wherein a majority surface portion of the concave seat and a majority surface portion of the convex portion of the sealing flap are configured to complement and arcuately align with one another to enhance a seal formed therebetween in the closed position.