Automated screening methods and apparatuses for implantable medical devices
First Claim
1. A screening device configured to perform patient screening to determine whether a patient is well suited to receiving a first implantable medical device (IMD) comprising:
- a user interface;
a port configured to receive signals from at least surface electrodes for cutaneous placement on a patient; and
operational circuitry configured to receive signals from the port and perform a patient screening method, and to use the user interface to provide information and/or instructions to a user and receive inputs therefrom;
wherein the operational circuitry is configured to;
perform a first method of determining cardiac rate using signals from the surface electrodes to calculate a first cardiac rate, wherein the first method is similar to a method used by the first IMD to determine cardiac rate;
obtain a second cardiac rate by a second method different from the first method; and
compare the first cardiac rate to the second cardiac rate and determine whether the first cardiac rate and second cardiac rate are similar, and, if so, determine that the patient is well suited to receiving the first IMD.
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Accused Products
Abstract
Automated pre-implant screening for candidate recipients of implantable medical devices. A set of cutaneous electrodes placed on a patient transcutaneously capture a cardiac signal using a screening device coupled to the electrodes. A first beat rate may be determined by identifying individual R-waves, QRS complexes or cardiac cycles from the captured cardiac signal using the cutaneous electrodes. A second beat rate may be calculated using one of several different methods, for example, by optical measurement, by monitoring heart sounds, by a second electric cardiac signal analysis, or by using an implanted device. The rates are compared to one another and, if a match is identified, the patient is deemed well suited to receive a particular device.
26 Citations
13 Claims
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1. A screening device configured to perform patient screening to determine whether a patient is well suited to receiving a first implantable medical device (IMD) comprising:
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a user interface; a port configured to receive signals from at least surface electrodes for cutaneous placement on a patient; and operational circuitry configured to receive signals from the port and perform a patient screening method, and to use the user interface to provide information and/or instructions to a user and receive inputs therefrom; wherein the operational circuitry is configured to; perform a first method of determining cardiac rate using signals from the surface electrodes to calculate a first cardiac rate, wherein the first method is similar to a method used by the first IMD to determine cardiac rate; obtain a second cardiac rate by a second method different from the first method; and compare the first cardiac rate to the second cardiac rate and determine whether the first cardiac rate and second cardiac rate are similar, and, if so, determine that the patient is well suited to receiving the first IMD. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An external device for use in assessing a patient'"'"'s suitability for receiving an implantable cardiac device comprising:
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a user interface for providing instructions and information to and receiving inputs from a user; a first means for detecting cardiac rate, the first means providing a cardiac rate that is configured to emulate a cardiac rate that would be calculated by an implantable medical device; a second means for detecting cardiac rate, the second means providing a cardiac rate that is configured to be more accurate than the first means; and a controller for comparing the cardiac rates of the first and second means and directing the inputs and outputs of the user interface. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification