# US 2016/0250488 A1 · Sensing vector selection in a cardiac stimulus device with postural assessment

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- Number: US 2016/0250488 A1
- Document ID: US20160250488A1
- Status: Published application
- Kind: A1
- Application number: 15/150,771
- Filed: 2016-05-10
- Published: 2016-09-01
- Earliest claimed: 2007-02-07
- Assignees: Cameron Health, Inc.
- Applicants: Cameron Health Inc
- Inventors: Rick Sanghera; Venugopal Allavatam
- Web page: https://patentgrep.com/patent/US20160250488A1

## CPC

- A61N 1/37247: {User interfaces, e.g. input or presentation means}
- A61B 5/1116: {Determining posture transitions}
- A61B 5/29: for permanent or long-term implantation
- A61B 5/341: Vectorcardiography [VCG]
- A61B 5/7221: {Determining signal validity, reliability or quality (preventing, reducing or removing noise induced by motion artefacts A61B5/7207; noise originating from a therapeutic or surgical apparatus A61B5/7217)}
- A61N 1/368: comprising more than one electrode co-operating with different heart regions {(A61N1/3622, A61N1/3627 take precedence)}
- A61N 1/37: Monitoring; Protecting
- A61N 1/3702: {Physiological parameters (A61N1/365 takes precedence; evoked response A61N1/371)}
- A61N 1/3704: {Circuits specially adapted therefor, e.g. for sensitivity control}
- A61N 1/3925: {Monitoring; Protecting}
- A61N 1/3956: {Implantable devices for applying electric shocks to the heart, e.g. for cardioversion}
- A61N 1/36535: {controlled by body position or posture}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Methods, implantable medical devices and systems configured to perform analysis of captured signals from implanted electrodes to identify cardiac arrhythmias. In an illustrative embodiment, signals captured from two or more sensing vectors are analyzed, where the signals are captured with a patient in at least first and second body positions. Analysis is performed to identify primary or default sensing vectors and/or templates for event detection.

## Claims

### Claim 1

(canceled)

### Claim 2

A programmer for use with an implantable medical device, the implantable medical device including therapy circuitry for providing electrical therapy output using one or more electrodes disposed on a lead configured for attachment thereto, implant communications circuitry for communicating with the programmer, and operational circuitry for controlling operation of the therapy circuitry and implant communications circuitry, the programmer comprising:
a user interface touchscreen for providing instructions and information to and receiving inputs from a user thereof; and
programmer communication circuitry for communicating with the implantable medical device;
wherein the programmer is configured to perform the following method:
present a plurality of posture states via the touchscreen to a user;
receive an input from a user indicating that a patient having the implantable medical device has assumed a first posture of the plurality of posture states;
upon receiving an input from the user indicating that the first posture has been assumed by the patient, direct, via the programmer communication circuitry, the implantable medical device to capture data for the first posture;
receive an indication from the implantable medical device that data capture is complete for the selected posture state; and
provide an indication to the user on the touchscreen in response to receiving an indication from the implantable medical device that data capture is complete for the selected posture state.

### Claim 3 (depends on 2)

The programmer of claim 2 wherein the programmer is further configured to:
receive an input from the user indicating that the patient has assumed a second posture of the plurality of posture states;
upon receiving the input from the user indicating that the second posture of the plurality of posture states has been assumed by the patient, directing, via the programmer communication circuitry, the implantable medical device to capture data for the second posture;
receive an indication from the implantable medical device that data capture is complete for the selected second posture state; and
provide an indication to the user on the touchscreen in response to receiving an indication from the implantable medical device that data capture is complete for the selected second posture state.

### Claim 4 (depends on 2)

The programmer of claim 2 wherein programmer is further configured to direct the implantable medical device to store a first sensing parameter related to the first posture.

### Claim 5 (depends on 4)

The programmer of claim 4 wherein the first sensing parameter is related to a sensing vector for use in sensing patient condition information.

### Claim 6 (depends on 5)

The programmer of claim 5 wherein the first sensing parameter defines which of a plurality of cardiac signal sensing vectors the implantable device is to use for sensing patient condition information.

### Claim 7 (depends on 2)

The programmer of claim 2 wherein the implantable medical device comprises an accelerometer and the programmer is configured to also direct the implantable medical device to set a first sensing parameter related to an output of the accelerometer using data captured for at least the selected posture state.

### Claim 8 (depends on 7)

The programmer of claim 7 wherein the first sensing parameter defines which of several cardiac signal sensing vectors available to the implantable medical device to use in response to the accelerometer signal.

### Claim 9 (depends on 2)

The programmer of claim 2 wherein the plurality of posture states include at least standing and lying down.

### Claim 10

A medical device system comprising:
an implantable medical device comprising therapy circuitry for providing electrical therapy output, a sensor for determining patient body position, and communication circuitry for communicating with an external device; and
a programmer for use with the implantable medical device, the programmer comprising:
a user interface touchscreen for providing instructions and information to and receiving inputs from a user thereof; and
programmer communication circuitry for communicating with the implantable medical device;
wherein the programmer is configured to perform the following method:
present a plurality of posture states via the touchscreen to a user;
receive an input from a user indicating that a patient having the implantable medical device has assumed a first posture of the plurality of posture states;
upon receiving an input from the user indicating that the first posture has been assumed by the patient, direct, via the programmer communication circuitry, the implantable medical device to capture data for the first posture;
receive an indication from the implantable medical device that data capture is complete for the selected posture state; and
provide an indication to the user on the touchscreen in response to receiving an indication from the implantable medical device that data capture is complete for the selected posture state.

### Claim 11 (depends on 10)

The medical device system of claim 10, wherein the programmer is further configured to:
receive an input from the user indicating that the patient has assumed a second posture of the plurality of posture states;
upon receiving the input from the user indicating that the second posture of the plurality of posture states has been assumed by the patient, direct, via the programmer communication circuitry, the implantable medical device to capture data for the second posture;
receive an indication from the implantable medical device that data capture is complete for the selected second posture state; and
provide an indication to the user on the touchscreen in response to receiving an indication from the implantable medical device that data capture is complete for the selected second posture state.

### Claim 12 (depends on 10)

The medical device system of claim 10, wherein the programmer is further configured to direct the implantable medical device to store a first sensing parameter related to the first posture.

### Claim 13 (depends on 12)

The medical device system of claim 12, wherein the first sensing parameter is related to a sensing vector for use in sensing patient condition information.

### Claim 14 (depends on 13)

The medical device system of claim 13, wherein the first sensing parameter defines which of a plurality of cardiac signal sensing vectors the implantable device is to use for sensing patient condition information.

### Claim 15 (depends on 10)

The medical device system of claim 10, wherein the implantable medical device comprises an accelerometer and the programmer is configured to also direct the implantable medical device to set a first sensing parameter related to an output of the accelerometer using data captured for at least the selected posture state.

### Claim 16 (depends on 15)

The medical device system of claim 15, wherein the first sensing parameter defines which of several cardiac signal sensing vectors available to the implantable medical device to use in response to the accelerometer signal.

### Claim 17 (depends on 10)

The medical device system of claim 10, wherein the plurality of posture states include at least standing and lying down.

### Claim 18

A method of operation by a programmer for use with an implantable medical device, the implantable medical device including therapy circuitry for providing electrical therapy output using one or more electrodes disposed on a lead configured for attachment thereto, implant communications circuitry for communicating with the programmer, and operational circuitry for controlling operation of the therapy circuitry and implant communications circuitry, the programmer comprising:
a user interface touchscreen for providing instructions and information to and receiving inputs from a user thereof; and
programmer communication circuitry for communicating with the implantable medical device;
wherein the method comprises:
the programmer presenting a plurality of posture states via the touchscreen to a user;
the programmer receiving an input from a user indicating that a patient having the implantable medical device has assumed a first posture of the plurality of posture states;
upon receiving an input from the user indicating that the first posture has been assumed by the patient, the programmer directing, via the programmer communication circuitry, the implantable medical device to capture data for the first posture;
the programmer receiving an indication from the implantable medical device that data capture is complete for the selected posture state; and
the programmer providing an indication to the user that data capture is complete for the selected posture state via the touchscreen and in response to receiving an indication from the implantable medical device that data capture is complete for the selected posture state.

### Claim 19 (depends on 18)

The method of claim 18 further comprising:
the programmer receiving an input from the user indicating that the patient has assumed a second posture of the plurality of posture states;
upon receiving the input from the user indicating that the second posture of the plurality of posture states has been assumed by the patient, the programmer directing, via the programmer communication circuitry, the implantable medical device to capture data for the second posture;
the programmer receiving an indication from the implantable medical device that data capture is complete for the selected second posture state; and
the programmer providing an indication to the user that data capture is complete for the selected second posture state, on the touchscreen and in response to receiving an indication from the implantable medical device that data capture is complete for the selected second posture state.

### Claim 20 (depends on 18)

The method of claim 18 further comprising the programmer directing the implantable medical device to store a first sensing parameter related to the first posture.

### Claim 21 (depends on 18)

The method of claim 18 wherein the implantable medical device comprises an accelerometer, and the method further comprises the programmer directing the implantable medical device to set a first sensing parameter related to an output of the accelerometer using data captured for at least the selected posture state.
