05439451 is referenced by 194 patents and cites 10 patents.

A medical backcheck valve includes a hollow housing containing an upwardly biased piston assembly for controlling liquid flow therethrough. The piston assembly comprises a substantially rigid plug having one end protruding from the upper end of the housing, and a flexible sheath covering having a relatively small diameter upper end surrounding the plug, a main seal for controlling flow through said first flow space, and a tubular lower end, secured at the bottom of the housing, for preventing liquid from entering within the covering.

Title
Capless medical backcheck valve
Application Number
215783
Publication Number
5439451
Application Date
November 30, 1994
Publication Date
August 8, 1995
Inventor
Claude Vidal
Santa Barbara
CA, US
Russell J Redmond
Goleta
CA, US
Alan K Plyley
Goleta
CA, US
Michael Collinson
Goleta
CA, US
Agent
Shoemaker and Mattare
Assignee
B Braun Medical
PA, US
IPC
A61M 5/00
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