Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Reexamination Certificate
2009-08-26
2010-06-01
Fristoe, Jr., John K (Department: 3753)
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
C251S045000
Reexamination Certificate
active
07726328
ABSTRACT:
An apparatus for monitoring the intra-abdominal pressure of a hospitalized patient includes a urinary catheter connected to a urine valve providing selectable communication between a discharge end of the urinary catheter and either a drain or a fluid source. Preferably, the urine valve is adapted for remote actuation and has a housing adapted to resist patient discomfort from leg-valve contact. Plumbing structure desirably maintains fluid supply and drain conduits in a substantially parallel arrangement to assist routing those conduits between a patient's legs. When the urine valve is oriented to permit communication with the fluid source, an infusion pump may be used to infuse a known quantity of fluid through the urine valve and into the patient's bladder. A pressure transducer desirably is connected in-circuit to indicate the fluid's pressure. To facilitate the infusion process, an automatic flow control device may be included in a fluid supply path and arranged to permit repetitive operation of a syringe to inject a bolus of fluid into the patient's bladder. Subsequent to a period of time in which to make a pressure measurement, preferred embodiments of the urine valve automatically return to a bladder draining position.
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Christensen Mark A.
Croll Perry W.
Denton Marshall T.
Kimball Edward J.
Wolfe Timothy R.
Fristoe, Jr. John K
TraskBritt
Wolfe Tory Medical, Inc.
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