1
Anthony S. McCoppin
Michael A Spohn, John A Haury, Anthony S McCoppin, John F Kalafut, Herbert M Grubic, James A Dedig: Fluid Delivery System, Fluid Path Set, and Pressure Isolation Mechanism with Hemodynamic Pressure Dampening Correction. April 21, 2011: US20110092828-A1

The fluid delivery system includes a pressurizing device for delivering injection fluid under pressure, a low pressure fluid delivery system, and a pressure isolation mechanism. The pressure isolation mechanism includes a first lumen associated with the pressurizing device, a second lumen associated ...


2
London Seymour B: Valve for biological systems. April 20, 1971: US3575161 (28 worldwide citation)

An electronically controlled, contamination-free valve for biological systems of the type feeding fluid through a plurality of compressible tubes and comprising a rocker arm pivotable so as to compress the tubing and control fluid flow, as a photocell circuit senses variant light transmission charac ...


3
Stewart James M: Pressure relief valve for a sphygmomanometer. Stewart Research, December 18, 1973: US3779236 (16 worldwide citation)

A pressure relief valve assembly particularly for use with a sphygmomanometer having a housing, an internal axial bore for passing pressurized air through the housing, a transverse bore intersecting the axial bore and communicating with the exterior of the housing, a flexible, resilient member mount ...


4
Ploss William R: Valve for stethoscopic monitoring. Minnesota Mining and Manufacturing Company, September 26, 1972: US3693611 (14 worldwide citation)

A pressure-activated, two-way valve means adapted for use in devices for monitoring blood pressure, pulse, and respiration during anesthesia. The valve communicates with a blood pressure acoustic pickup which is always open, but the pressure-activated feature automatically closes off communication w ...


5
Hayes Roger: Retaining means for sphygmomanometer valve control head. Gottlieb Rackman & Reisman, July 16, 1974: US3823707 (10 worldwide citation)

An improved control mechanism for a self-closing sphygmomanometer valve is disclosed. The valve head is movable from an upper closed position to a lower open position against the action of an internal spring. The internal chamber of the valve head is narrowed at its upper portion to achieve a wedgin ...


6
Beck Charlotte, Roll Karl, Kummer Fritz: Sphygmomanometer with built-in timer. Walter Beck KG Kontroll und Fernmessgerate, October 19, 1971: US3613668 (9 worldwide citation)

A sphygmomanometer operable with one hand has a cylindrical housing in which a pump for inflating a blood-flow-restricting sleeve is formed by a deflectable wall of the cylindrical housing. A meter for monitoring pressure is removably fitted on the end of the housing, and a control ring surrounds th ...


7
Hurwitz Mathew: Automatic recording sphygmomanometer. November 13, 1973: US3771515 (8 worldwide citation)

An automatic blood pressure recording apparatus which eliminates or minimizes substantially all known sources of human error in sphygmomanometry. A uni-directional micorphone maximally sensitive to Korotkoff sounds is contained within the cuff donned by the subject. Analog signals from the microphon ...


8
Gibbens Roy P: Multi-way valve. Sybron Corporation, Roessel Theodore B, Rich James A, April 8, 1975: US3875961 (7 worldwide citation)

A pneumatic air valve core serves as a check valve during inflation of articles such as sphygmomanometer cuffs and as a flow control valve when the pressure is released. The core is mounted in a valve housing, which is connected by screw threads to an inlet housing. An adjusting screw is mounted in ...


9
Hayes Roger: Control apparatus for blood pressure testing device. June 12, 1973: US3738357 (7 worldwide citation)

A valve arrangement for accurately controlling the bleed rate of a sphygmomanometer. The valve includes a head mounted for movement between closed and open positions, with the open position being established by the setting of a cam element which is contacted by the head when the valve is opened. Con ...


10
Saba Joseph M: Valve. Technical Resources, November 11, 1975: US3918437 (4 worldwide citation)

A fluid control valve, particularly for controlling the inflation and deflation of the cuff of blood pressure measuring apparatus, the valve comprising a base having a first passage therethrough adapted at one end for connection to the valve stem of a container of pressurized fluid, a valve member o ...