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Patent

Interchangeable disposable acoustic for use with an ultrasonic flowmeter, particularly during extracorporeal measurement of blood flow

Wayne M. Spani, +1 more
TLDR
An inexpensive disposable plastic flow body interchangeably flow connects in line a conduit flowing fluid, and concurrently, acoustically connects to one or more ultrasonic transducers, so as to serve as an acoustic chamber for use with an ultrasonic flowmeter in the measurement of fluid flow velocity and/or volume as mentioned in this paper.
Abstract: 
An inexpensive disposable plastic flow body interchangeably flow connects in line a conduit flowing fluid, and also, concurrently, acoustically connects to one or more ultrasonic transducers, so as to serve as an acoustic chamber for use with an ultrasonic flowmeter in the measurement of fluid flow velocity and/or volume. The flow connection is preferably accomplished by plugging, preferably by inserting nozzles into surgical tubing. The external ultrasonic transducer(s) is (are) normally connected under pressured contact, typically under spring forces which are preferably of external origin. Acoustic-coupling elements in the walls of the acoustic chamber serve to match the acoustic impedance of the flow body to acoustic impedance of blood. The disposable plug-connected flow body is particularly safe, sterile and convenient for extracorporeal ultrasonic blood flow measurement.

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Patent

User interface improvements for medical devices

Marwan A. Fathallah, +9 more
TL;DR: In this paper, a method and system for operating a medical device with or without a cassette in place is described, and a method for adding additional VTBI to an ongoing infusion without stopping the infusion and with maintaining the infusion parameters.
Patent

Medication injection site and data collection system

Stephen Michael Prince, +3 more
TL;DR: A medication delivery apparatus for use with a medication container includes a housing, a fluid conduit at least partially extending within the housing and configured to deliver medication within the medication container to a patient, a medication port extending from the housing to a fluid outlet of the container, the medication port being fluidically coupled to the fluid conduit, and at least one sensor disposed within the house to generate information characterizing administration of the medication for processing by a remote data collection system as discussed by the authors.
Patent

Medication and Identification Information Transfer Apparatus

Walter John Bochenko
TL;DR: In this article, a medication and identification information transfer system is provided that includes a primary medication container, a secondary medication container and a secondary container label and a medication information transfer apparatus, which can transfer information indicative of the contents of the primary container to a medication delivery device such as an intelligent injection site.
Patent

Systems and methods for a graphical interface including a graphical representation of medical data

James A. Hume, +8 more
TL;DR: In this article, the authors describe systems and methods for a graphical interface including a graphical representation of medical data and provide medical safety reporting capabilities including reporting of history data and real-time visual monitoring data.
Patent

Differential pressure based flow sensor assembly for medication delivery monitoring and method of using the same

James D. Jacobson, +11 more
TL;DR: In this article, a differential pressure based flow sensor assembly and method of using the same to determine the rate of fluid flow in a fluid system is presented, where a flow restricting element is positioned along a fluid flow passage between an inlet and an outlet.
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Patent

Snap-on flow measurement system

Lawrence C. Lynnworth
TL;DR: A snap-on flow measurement system includes a block which attaches to a conduit and positions at least one transducer for launching and receiving acoustic signals along a precisely defined path through a flowing fluid as discussed by the authors.
Patent

Apparatus for measuring liquid flow

Claudio Meisser, +2 more
TL;DR: In this article, an apparatus for ultrasonically determining fluid flow passing through a measurement section includes a tube which has two ends and an average predetermined inner cross-sectional area; the tube constitutes the measurement section, and each sound transfer surface is disposed at a sufficiently large predetermined distance from a corresponding end of the tube, so as to permit the fluid flowing through the tube.
Patent

Ultrasonically operative device for determining physical quantities of a medium

Soren Lolk
TL;DR: In this article, an ultrasonically operative device with an ultrasonic signal having a predetermined wave length for measuring physical quantities such as the flow speed of a medium such as water is described.
Patent

Ultrasonic air flow transducer for high humidity environments

Bruce E. Mount, +1 more
TL;DR: A transducer assembly comprising an inner, primary, transducers having a pair of transducers fixed to a liner or cavity for providing the fluid compression sending and receiving signals for measuring the velocity and change of composition of fluid in the cavity which is being inspired and expired by a patient in a setting, such as in an intensive care unit of a hospital as mentioned in this paper.
Patent

Device for determining mass air flow in a conduit

Husse Massimo, +1 more
TL;DR: An ultrasonic device for determining the air flow rate in a conduit, comprising a duct, which may form part of the conduit or may be connectable thereto, at each end of which is a respective enlarged cylindrical chamber communicating axially with the duct and housing a respective piezoelectric transducer as discussed by the authors.