Lead and leadset designs for providing medical telemetry antenna
First Claim
1. A lead set, comprising:
- a lead set connector configured to connect the lead set to a device, the lead set connector including a plurality of contacts for conveying electrocardiograph (ECG) signals to the device, the lead set connector further including at least one antenna contact for connecting the device to an antenna of the ECG lead set; and
a plurality of external ECG leads that extend from the connector, at least one of the ECG leads comprising a flexible lead wire extending between the lead set connector and an ECG electrode connector, the lead wire comprising a first conductor coupled to the ECG electrode connector to receive an ECG signal of a patient, and a second conductor which extends alongside the first conductor in a non-coaxial arrangement and is insulated from the first conductor, the second conductor being electrically connected to the antenna contact of the lead set connector wherein the second conductor is not used to transmit an ECG signal and is used as at least a portion of the antenna.
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Accused Products
Abstract
Various designs and features of an ambulatory transceiver and ECG lead set are disclosed for use in remote patient monitoring. One feature involves the use of unshielded, dual-conductor lead wires in which one conductor carries the patient'"'"'s ECG signal and the other conductor provides an RF antenna element for the transceiver. The lead wires used in one embodiment provide improved flexibility, durability, and antenna performance over conventional lead sets with shielded wires. Another feature involves an antenna diversity scheme in which the transceiver switches between two or more ECG-lead antennas, each of which is formed from one or more ECG leads of the lead set. Another feature involves the use of a circuit within the transceiver to monitor, and dynamically compensate for changes in, the impedance of an ECG-lead antenna or a conductor thereof. Another feature is an improved circuit for protecting the transceiver from damage caused by defibrillation pulses.
58 Citations
21 Claims
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1. A lead set, comprising:
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a lead set connector configured to connect the lead set to a device, the lead set connector including a plurality of contacts for conveying electrocardiograph (ECG) signals to the device, the lead set connector further including at least one antenna contact for connecting the device to an antenna of the ECG lead set; and
a plurality of external ECG leads that extend from the connector, at least one of the ECG leads comprising a flexible lead wire extending between the lead set connector and an ECG electrode connector, the lead wire comprising a first conductor coupled to the ECG electrode connector to receive an ECG signal of a patient, and a second conductor which extends alongside the first conductor in a non-coaxial arrangement and is insulated from the first conductor, the second conductor being electrically connected to the antenna contact of the lead set connector wherein the second conductor is not used to transmit an ECG signal and is used as at least a portion of the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A telemetry device, comprising:
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a portable radio frequency (RF) transmitting unit adapted to be worn by a patient; and
a lead that extends from the RF transmitting unit and attaches externally to the patient, the lead comprising a flexible lead wire comprising a first conductor and a second conductor that extend side by side in a non-coaxial arrangement;
wherein the first conductor carries a physiologic data signal from the patient to the RF transmitting unit, and the RF transmitting unit uses the second conductor as at least a portion of a telemetry antenna for transmitting the physiologic data signal, the second conductor not carrying a physiologic data signal from the patient. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification