A splittable hemostatic valve and introducer sheath is provided for introductions of leads or catheters through the valve and sheath combination into a vein or artery. Because of the hemostatic valve, this sheath can remain in the vein throughout the operation with the advantage of free lead exchange...http://www.google.com/patents/US5312355?utm_source=gb-gplus-sharePatent US5312355 - Splittable hemostatic valve and sheath and the method for using the same
