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US 9,808,586 B2Granted
Electrical safety methods, devices, and systems for medical treatment devices
AssigneeNxStage Medical, Inc.
InventorYakov Kogan
Life of this patent
Estimating the term…
Abstract
Systems, methods, and devices can detect a dangerous or adverse condition or anticipated condition that indicates an undesirable amount of electric current in a patient-connected tube providing fluid to a patient. The fluid flow to the patient is stopped responsive to the detection. Stoppage of fluid flow to the patient can reduce or prevent electric current in the fluid from reaching a patient, flowing through the patient to ground, and/or continuing to flow through the patient.
Claims10
A method for protecting a patient from an electrical source of a treatment device, comprising:
- connecting the patient to a treatment device by a fluid circuit in which a leakage current is induced by capacitive and/or inductive coupling of the fluid circuit with the treatment device;
- providing a conductive element adjacent the fluid circuit such that it is capacitively coupled to the fluid circuit, wherein the conductive element is electrically isolated from a fluid carried by said fluid circuit and the fluid carried by the fluid circuit is conductive;
- inducing a voltage in said conductive element and detecting a magnitude of the voltage which is responsive to the current induced by said capacitive and/or inductive coupling;
- and
- interrupting a normal operation of the treatment device effective to reduce said leakage current in response to a detected magnitude of said voltage.
2 more elements
Dependencies are inferred from the claim text.