Apparatus for connecting impedance measurement apparatus to an electrode
First Claim
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1. Apparatus for connecting an impedance measurement apparatus to an electrode, the apparatus including:
- a) a housing having a connector for coupling the housing to the electrode; and
b) a circuit mounted in the housing, the circuit being electrically coupled to the electrode using the connector, and being coupled to the impedance measurement apparatus via a lead, the circuit including a current source circuit configured to;
a) receive one or more control signals from the impedance measurement apparatus via the lead;
b) filter and amplify the control signals to thereby generate one or more current signals;
c) apply the current signals to the electrode; and
d) transfer an indication of the applied signals to the impedance measurement apparatus.
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Abstract
A method of monitoring pulmonary oedema in a subject using a processing system. The method includes, determining a measured impedance value for at least two body segments, at least one of the body segments being a thoracic cavity segment. For each body segment, the measured impedance values are used to determine an index, which is in turn used to determine the presence, absence or degree of pulmonary oedema using the determined indices.
149 Citations
10 Claims
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1. Apparatus for connecting an impedance measurement apparatus to an electrode, the apparatus including:
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a) a housing having a connector for coupling the housing to the electrode; and b) a circuit mounted in the housing, the circuit being electrically coupled to the electrode using the connector, and being coupled to the impedance measurement apparatus via a lead, the circuit including a current source circuit configured to; a) receive one or more control signals from the impedance measurement apparatus via the lead; b) filter and amplify the control signals to thereby generate one or more current signals; c) apply the current signals to the electrode; and d) transfer an indication of the applied signals to the impedance measurement apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus for connecting an impedance measurement apparatus to an electrode, the apparatus including:
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a) a housing having a connector for coupling the housing to the electrode; b) a circuit mounted in the housing, the circuit being provided on a circuit board having an electrical contact for electrically coupling the circuit and the electrode, the circuit being coupled to the impedance measurement apparatus via a lead, the circuit including a current source circuit configured to; a) receive one or more control signals from the impedance measurement apparatus via a lead; b) filter and amplify the control signals to thereby generate one or more current signals; c) apply the current signals to the electrode; and d) transfer an indication of the applied signals to the impedance measurement apparatus; and c) a biased arm, the biased arm being for urging at least part of the electrode into abutment with the electrical contact.
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10. Apparatus for connecting an impedance measurement apparatus to an electrode including a conductive electrode substrate, the apparatus including:
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a) a housing having a connector for coupling the housing to the electrode; b) a circuit mounted in the housing, the circuit being provided on a circuit board having an electrical contact for electrically coupling the circuit and the electrode, the circuit being coupled to the impedance measurement apparatus via a lead, the circuit including a current source circuit configured to; a) receive one or more control signals from the impedance measurement apparatus via a lead; b) filter and amplify the control signals to thereby generate one or more current signals; c) apply the current signals to the electrode; and d) transfer an indication of the applied signals to the impedance measurement apparatus; and c) a biased arm, the biased arm being for urging the conductive electrode substrate into abutment with the electrical contact.
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Specification