Apparatus for monitoring infusion
First Claim
1. An apparatus for infusion monitoring comprisingan infusion hose for accepting infusion flow from a single infusion flow source,a diaphragm,a pressure transmission line extending between said infusion hose and said diaphragm, said diaphragm indicating blockage in infusion flow through said infusion line from the single infusion flow source, anda one-way valve located in said infusion hose for placement adjacent to a patient so as to permit infusion flow only in a direction to the patient,said pressure transmission line including a narrow-lumen pressure transmission hose and an intermediately placed air chamber having a free end thereof connected with a pressure transmission capsule which includes said diaphragm,said air chamber including a piece of transparent, thick-walled hose having a wider lumen than said narrow lumen, thick walled hose of said pressure transmission line.
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Abstract
An apparatus for infusion monitoring including a pressure transmission line branched from the infusion hose and a diaphragm connected with the infusion hose, the diaphragm being able to be connected with a pressure sensor for registering a change in curvature of the diaphragm. In order to achieve the aim of providing an apparatus of this type which renders possible on the one hand a reliable monitoring of infusion and on the other hand a way of preventing the production of a false alarm in a substantially reliable fashion, the apparatus of this type is so designed that in the infusion hose between the branch point of the pressure transmission line and the free end, adjacent to the patient, of the infusion hose a one-way valve is arranged, which permits a direction of flow to the patient.
94 Citations
19 Claims
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1. An apparatus for infusion monitoring comprising
an infusion hose for accepting infusion flow from a single infusion flow source, a diaphragm, a pressure transmission line extending between said infusion hose and said diaphragm, said diaphragm indicating blockage in infusion flow through said infusion line from the single infusion flow source, and a one-way valve located in said infusion hose for placement adjacent to a patient so as to permit infusion flow only in a direction to the patient, said pressure transmission line including a narrow-lumen pressure transmission hose and an intermediately placed air chamber having a free end thereof connected with a pressure transmission capsule which includes said diaphragm, said air chamber including a piece of transparent, thick-walled hose having a wider lumen than said narrow lumen, thick walled hose of said pressure transmission line.
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15. An apparatus for infusion monitoring comprising:
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an infusion hose for accepting infusion flow from a single infusion flow source, a diaphragm, a pressure transmission line extending between said infusion hose and said diaphragm, said diaphragm indicating blockage in infusion flow through said infusion line from the single infusion flow source, a first one-way valve located in said infusion hose for placement adjacent to a patient so as to permit infusion flow only in a direction to the patient, a second one-way valve located in said infusion hose, and a pressure transmission capsule connected to said diaphragm of said pressure transmission line. - View Dependent Claims (16, 17, 18)
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19. An apparatus for infusion monitoring comprising:
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an infusion hose, a pressure transmission line, a connector for connecting to an infusion device, said connector having infusion flow therethrough divided between said infusion hose and said pressure transmission line, said infusion line terminating in a one-way valve for allowing infusion flow therefrom only in a direction towards a patient, said pressure transmission line being a thick walled, minimal expansion line having two separate interconnected sections interconnected by an air chamber, said pressure transmission line terminating in a diaphragm for connection to a pressure sensitive sensor to detect infusion pressure which controls an alarm signal dependent upon infusion flow pressure.
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Specification