公开(公告)号：CA2450461A1

公开(公告)日：2002-12-19

申请号：CA2450461

申请日：2002-06-12

Applicant: BAXTER INT

Inventor： MARTTILA ALAN W ,  BILSTAD ARNOLD C ,  DIPERNA PAUL M ,  PRISCO MICHAEL R ,  YARDIMCI ATIF M ,  PENNINGTON DAVID W ,  SMITH SIDNEY T ,  BELLOTTI MARC ,  ARIAGNO SCOTT R ,  WILLIAMSON MARK E ,  PERRY MARK C

IPC: F16K7/12 ,  A47G21/18 ,  A61J1/05 ,  A61J1/10 ,  A61J15/00 ,  A61M11/06 ,  A61M15/00 ,  A61M39/00 ,  A61M39/22 ,  F16K7/17 ,  F16K15/02 ,  F16K15/03 ,  F16K15/14 ,  B65D47/20 ,  A61M39/24

Abstract: A vacuum demand valve (10) is capable of delivering a flowable material. The valve (10) has a housing (11) having a proximal end (14), a distal end (16), an intermediate segment (18) therebetween defining a passageway (24) wherein the flowable substance can flow from the proximal end (14) to the distal end (16). The housing (11) can be tubing. A valve member (20) is located along t he intermediate segment (18). The valve member (20) has a closed condition wherein the flowable material from the proximal end (14) to the distal end (16) is stopped and an open condition wherein the flow of the flowable material from the proximal end (14) to the distal end (16) is unstopped. The valve member (20) is biased in the closed condition and is responsive to a partial vacuum provided by the user through the passageway (24) for placing the valve member (20) in the open condition.