# US 2025/0050119 A1 · Garment Features for Therapy Electrode Pressure and/or Stabilization in a Wearable Medical Device

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- Number: US 2025/0050119 A1
- Document ID: US20250050119A1
- Status: Published application
- Kind: A1
- Application number: 18/717,382
- Filed: 2022-12-05
- Published: 2025-02-13
- Earliest claimed: 2021-12-06
- Assignees: ZOLL Medical Corporation
- Applicants: ZOLL Medical Corporation
- Inventors: Sunaina Rustagi; Christopher Lawrence Swenglish; Milad Alizadeh-Meghrazi; Tony Chahine; Ladan Eskandarian
- Web page: https://patentgrep.com/patent/US20250050119A1

## CPC

- A61N 1/3904: {External heart defibrillators [EHD]}
- A41D 1/002: {adapted to accommodate electronic equipment (patients' garments for medical monitoring A41D13/1281; luminous ornaments A41D27/085)}
- A61N 1/046: {Specially adapted for shock therapy, e.g. defibrillation}
- A61N 1/0484: {Garment electrodes worn by the patient}
- A61N 1/3906: {characterised by the form of the shockwave}
- A61N 1/3925: {Monitoring; Protecting}
- 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)
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES

## Abstract

A non-invasive wearable ambulatory cardiac defibrillator configured to improve therapy electrode contact with a patient's skin is provided. The defibrillator device includes a garment configured to be worn around the patient's torso, a sensing electrode attached to the garment and configured to sense electrical signal(s) at the surface of the patient's skin indicative of electrical activity of the patient's heart, and therapy electrodes attached to the garment and configured to deliver one or more defibrillation pulses to the patient. The therapy electrodes include at least two posterior therapy electrodes configured to be disposed on a posterior portion of the patient's body. The device further includes at least one strap attached to a back portion of the garment and exerting a normal force on the posterior therapy electrodes to exert a substantially uniform normal force over the surfaces of the posterior therapy electrodes and/or limit displacement of the posterior therapy electrodes.

## Claims

### Claim 1

A non-invasive wearable ambulatory cardiac defibrillator, comprising:
a garment configured to be worn around a torso of a patient;
at least one sensing electrode attached to the garment and configured to sense electrical signal(s) at the surface of the patient's skin indicative of electrical activity of the patient's heart;
two or more therapy electrodes attached to the garment and configured to deliver one or more defibrillation pulses to the patient, wherein the two or more therapy electrodes comprise:
an anterior therapy electrode configured to be disposed on an anterior portion of the patient's body; and
at least two posterior therapy electrodes configured to be disposed on a posterior portion of the patient's body; and
a controller in communication with the at least one sensing electrode and the therapy electrodes, the controller configured to receive the electrical signal(s) from the at least one sensing electrodes and to cause delivery of the one or more defibrillation pulses from two or more therapy electrodes based on the controller detecting a cardiac arrhythmia in the received electrical signal(s);
at least one strap attached to a back portion of the garment, the at least one strap exerting a normal force on the at least two posterior therapy electrodes to exert a substantially uniform normal force over the surfaces of the at least two posterior therapy electrodes and/or limit displacement of the at least two posterior therapy electrodes.

### Claim 2 (depends on 1)

The defibrillator of claim 1, wherein the at least one strap is attached to an external surface of the garment.

### Claim 3 (depends on 1)

The defibrillator of claim 1, wherein the at least one strap comprises:
a first strap extending from a right shoulder portion of the garment to a left waist portion of the garment; and
a second strap extending from a left shoulder portion of the garment to a right waist portion of the garment such that the second strap crosses the first strap.

### Claim 4 (depends on 1)

The defibrillator of claim 1, where the at least one strap is adjustable in length, wherein adjustment of the length of the at least one strap adjusts the normal force exerted on the at least two posterior therapy electrodes.

### Claim 5 (depends on 1)

The defibrillator of claim 1, wherein the at least one strap comprises:
a first strap extending from a right shoulder portion of the garment to a left shoulder portion of the garment;
a second strap extending from the first strap to a right waist portion of the garment; and
a third strap extending from the first strap to a left waist portion of the garment.

### Claim 6 (depends on 5)

The defibrillator of claim 5, wherein the first strap comprises a curved portion extending over the at least one therapy electrode.

### Claim 7 (depends on 1)

The defibrillator of claim 1, wherein the at least one strap comprises:
a central strap extending at least partially over the at least one therapy electrode;
a first strap extending from a right shoulder portion of the garment to the central strap;
a second strap extending from a left shoulder portion of the garment to the central strap;
a third strap extending from a right waist portion of the garment to the central strap; and
a fourth strap extending from a left waist portion of the garment to the central strap.

### Claim 8 (depends on 1)

The defibrillator of claim 1, wherein the at least one strap is disposed internally within the garment.

### Claim 9 (depends on 1)

The defibrillator of claim 1, wherein one of the garment and the at least one strap comprises a plurality of loops, wherein the other of the garment and the at least one strap comprises a hook configured to engage any of the plurality of loops to adjust a tautness of the at least one strap.

### Claim 10 (depends on 1)

The defibrillator of claim 1, wherein the two or more therapy electrodes are configured to deliver a biphasic shock to the patient.

### Claim 11 (depends on 1)

The defibrillator of claim 1, wherein the two or more therapy electrodes are configured to deliver pacing pulses to the patient.

### Claim 12 (depends on 1)

The defibrillator of claim 1, wherein the controller is configured to monitor for at least one of ventricular fibrillation or a ventricular tachycardia event.

### Claim 13

(canceled)

### Claim 14 (depends on 1)

The defibrillator of claim 1, wherein the garment is configured to be separable from the at least one sensing electrode and the two or more therapy electrodes.

### Claim 15 (depends on 1)

The defibrillator of claim 1, wherein the controller is configured to generate ECG information from the electrical signal(s) received from the at least one sensing electrode and to cause delivery of the one or more therapeutic pulses from the at least one therapy electrode.

### Claim at position 16

16-23. (canceled)

### Claim 24

A non-invasive wearable ambulatory cardiac defibrillator, comprising:
a garment configured to be worn around a torso of a patient;
at least one sensing electrode attached to the garment and configured to sense electrical signal(s) at the surface of the patient's skin indicative of electrical activity of the patient's heart;
two or more therapy electrodes attached to the garment and configured to deliver one or more defibrillation pulses to the patient, wherein the two or more therapy electrodes comprise:
an anterior therapy electrode configured to be disposed on an anterior portion of the patient's body; and
at least two posterior therapy electrodes configured to be disposed on a posterior portion of the patient's body;
a controller in communication with the at least one sensing electrode and the therapy electrodes, the controller configured to receive the electrical signal(s) from the at least one sensing electrodes and to cause delivery of the one or more defibrillation pulses from two or more therapy electrodes based on the controller detecting a cardiac arrhythmia in the received electrical signal(s); and
a panel attached to a back portion of the garment at least partially over the at least two posterior therapy electrodes, the panel exerting a normal force on the at least two posterior therapy electrodes to exert a substantially uniform normal force over the surfaces of the at least two posterior therapy electrodes and/or limit displacement of the at least two posterior therapy electrodes,
wherein the panel is made from a material that is less elastic than a material of the back portion of the garment.

### Claim 25 (depends on 24)

The defibrillator of claim 24, wherein the panel is attached to the back portion of the garment with an adhesive.

### Claim at position 19

26-27. (canceled)

### Claim 28 (depends on 24)

The defibrillator of claim 24, wherein the panel comprises:
a central section at least partially covering the at least one therapy electrode;
a first strip extending from the central section to a right waist portion of the garment; and
a second strip extending from the central section to a left waist portion of the garment.

### Claim 29 (depends on 24)

The defibrillator of claim 24, wherein the two or more therapy electrodes are configured to deliver at least one of a biphasic shock to the patient or pacing pulses to the patient.

### Claim 30

(canceled)

### Claim 31 (depends on 24)

The defibrillator of claim 24, wherein the controller is configured to monitor for at least one of ventricular fibrillation or a ventricular tachycardia event.

### Claim 32

(canceled)

### Claim 33 (depends on 24)

The defibrillator of claim 24, wherein the garment is configured to be separable from the at least one sensing electrode and the two or more therapy electrodes.

### Claim 34 (depends on 24)

The defibrillator of claim 24, wherein the controller is configured to generate ECG information from the electrical signal(s) received from the at least one sensing electrode and to cause delivery of the one or more therapeutic pulses from the at least one therapy electrode.

### Claim 35

(canceled)