BLOOD PRESSURE MEASURING MECHANISM
First Claim
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1. A device for continuously monitoring internal pressure in a vascular system of a skeletal animal at a remote location comprising, in combination:
- a housing having a lower ridge portion including a first shoulder on one side thereof and a second shoulder on the other side thereof, said shoulders defining a laterally extending, rectangular, open-ended channel therebetWeen, said ridge portion adapted to fit over and complement a vascular duct, said shoulders adapted to engage covering around the vascular duct and hold substantially at the sides of the vascular duct pressing the duct inwardly from the shoulders, a flexible membrane secured to said housing at said rectangular channel and adapted to fit over said duct, a transducer secured in said housing adjacent and coupled to said membrane for generating a voltage in response to pressure against said membrane, means for passing only the AC component of voltage from said transducer connected to the output of said transducer, means for displaying a voltage, and switching means connected to said display means for selectively conducting the output voltage from said transducer where only the AC component of said voltage to said monitoring means such that the voltage of said transducer representative of the pressure of said device against said animal and the pressure of said duct may be displayed on said display means, and alternatively, the AC component of said voltage, representative only of the pressure of said duct may be displayed on said display means.
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Abstract
An apparatus for observing and measuring the complete range of arterial blood pressures. A small casing is provided having a cavity. The cavity is sealed at one end by a flexible membrane and at the other by a pressure responsive transducer. The casing has a ridge portion for positioning over an arterial duct complimentary to the duct. As pressure changes in the duct, the voltage output of the transducer varies representative of the duct pressure.
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Citations
2 Claims
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1. A device for continuously monitoring internal pressure in a vascular system of a skeletal animal at a remote location comprising, in combination:
- a housing having a lower ridge portion including a first shoulder on one side thereof and a second shoulder on the other side thereof, said shoulders defining a laterally extending, rectangular, open-ended channel therebetWeen, said ridge portion adapted to fit over and complement a vascular duct, said shoulders adapted to engage covering around the vascular duct and hold substantially at the sides of the vascular duct pressing the duct inwardly from the shoulders, a flexible membrane secured to said housing at said rectangular channel and adapted to fit over said duct, a transducer secured in said housing adjacent and coupled to said membrane for generating a voltage in response to pressure against said membrane, means for passing only the AC component of voltage from said transducer connected to the output of said transducer, means for displaying a voltage, and switching means connected to said display means for selectively conducting the output voltage from said transducer where only the AC component of said voltage to said monitoring means such that the voltage of said transducer representative of the pressure of said device against said animal and the pressure of said duct may be displayed on said display means, and alternatively, the AC component of said voltage, representative only of the pressure of said duct may be displayed on said display means.
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2. The device of claim 1 wherein said flexible membrane is a sponge SILASTIC disc.
Specification
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Current AssigneeArthur S. Iberall
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Original AssigneeArthur S. Iberall
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InventorsIberall, Arthur S.
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Primary Examiner(s)Kamm, William E.
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Application NumberUS05/034,341Time in Patent Office946 DaysField of Search128/25D,25E,25AG,25MN,25P,25Q,25R,25T,25VUS Class Current600/493CPC Class CodesA61B 5/021 Measuring pressure in heart...A61B 5/02233 Occluders specially adapted...
