Hemostasis valve with membranes having offset apertures

摘要

A self-sealing hemostasis valve having a first membrane with an opening offset from the center and a second membrane with an opening offset from the center in a direction opposite of the offset in the first membrane. The two membranes are joined about their outer edges. Access through the two elastomeric membranes without tearing is available at the intersection of the openings in the membrane assembly when the two membranes are deformed by an instrument being inserted through the hemostasis valve.