Electrocardiogram monitoring
First Claim
1. A system, comprising:
- an elongated external cable having a proximal end and a distal end, the cable comprising;
a plurality of leads that extend from the proximal end to the distal end and are configured to convey electrical signals between the distal end and the proximal end, anda connector located at the proximal end that includes a cable-type identification conductor separate from the leads; and
an external defibrillator comprising;
circuitry configured to at least one of monitor or deliver therapy to the patient,a cable-type identification circuit located on an external surface of the connector, anda receptacle that is configured to receive the connector, is configured to couple the leads to the circuitry that is configured to at least one of monitor or deliver therapy to the patient, and is configured to couple the cable-type identification conductor to the cable type detection circuit, wherein the cable-type identification conductor is configured to create a short circuit in the cable-type identification circuit, and the external defibrillator is configured to detect the short circuit and identify a type of the external cable based on the detection, the external defibrillator further configured to adjust delivery of therapy to the patient based on the identified type of cable and to determine whether the patient is a pediatric patient based on the identified type of cable.
8 Assignments
0 Petitions
Accused Products
Abstract
Techniques for determining whether one or more leads are not adequately connected to a patient, e.g., for ECG monitoring, are described. The techniques involve injection of an integrated signal (which includes a test signal) into one lead, and monitoring the driven lead and the response at the other leads, including the common mode and the difference between the other leads. These “lead-off” detection techniques may be provided by an external defibrillator that provides three-wire ECG monitoring. Techniques for determining a type of a cable coupled to a defibrillator are also described. The cable-type identification may allow a defibrillator to, for example, operate in either a three-wire ECG monitoring mode or a therapy mode, based on whether a three-wire ECG cable or a defibrillation cable is coupled to the defibrillator.
11 Citations
8 Claims
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1. A system, comprising:
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an elongated external cable having a proximal end and a distal end, the cable comprising; a plurality of leads that extend from the proximal end to the distal end and are configured to convey electrical signals between the distal end and the proximal end, and a connector located at the proximal end that includes a cable-type identification conductor separate from the leads; and an external defibrillator comprising; circuitry configured to at least one of monitor or deliver therapy to the patient, a cable-type identification circuit located on an external surface of the connector, and a receptacle that is configured to receive the connector, is configured to couple the leads to the circuitry that is configured to at least one of monitor or deliver therapy to the patient, and is configured to couple the cable-type identification conductor to the cable type detection circuit, wherein the cable-type identification conductor is configured to create a short circuit in the cable-type identification circuit, and the external defibrillator is configured to detect the short circuit and identify a type of the external cable based on the detection, the external defibrillator further configured to adjust delivery of therapy to the patient based on the identified type of cable and to determine whether the patient is a pediatric patient based on the identified type of cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification