Patent ID: 6228056
Filing Date: 2001-05-08
Classification: A61M

Abstract:
An intermittent regulator for use in regulating the vacuum withdrawal of body fluids from a patient, comprising:(a) regulator housing having vacuum connection means for receiving a source of partial vacuum;(b) a patient connection means on said housing for connecting the patient to the vacuum connection means for delivering body fluids;(c) the regulator including a moveable piston in said housing;(d) the piston being movable in response to vacuum draw from the vacuum connection means, whereby the piston is moveable between first and second positions with the piston carrying a first spool movement means for movement therewith;(e) the spool carrying a second spool movement means for movement therewith and being movable in response to interaction between said first and second spool movement means when the piston is moved between said first and second positions, with the spool having conduit means for intermittently connecting the patient connection means to the vacuum connection means in response to movement of the spool, for intermittent withdrawal of body fluids from a patient.