05000745 is referenced by 247 patents and cites 33 patents.

An introducer sheath assembly having an improved valve assembly including at least three elastic disc shaped membranes. A first membrane has a circular hole through the center to sealingly receive a catheter while a second membrane has a center hole smaller than the hole in the first membrane to sealingly receive a guidewire. The second membrane also has at least one slit through the hole to accommodate passage of the larger catheter through the second membrane. A third membrane contains at least one slit through its center to seal the valve assembly in the absence of a guidewire or catheter.

Title
Hemostatis valve
Application Number
7/273282
Publication Number
5000745
Application Date
November 18, 1988
Publication Date
March 19, 1991
Inventor
Alexander S Withers
Athens
TX, US
Robert L Guest
Agent
Robert E Lee
Gene Warzecha
Assignee
Edward Weck Incorporated
NJ, US
IPC
A61M 25/00
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