Jewel Patch Wearable Cardioverter Defibrillator (P-WCD) (Jewel)
Overview
The Jewel Patch Wearable Cardioverter Defibrillator (P-WCD), developed by Element Science, Inc., is a water-resistant, patch-based wearable defibrillator designed to continuously monitor cardiac rhythms and deliver therapeutic shocks to prevent sudden cardiac arrest (SCA). Utilizing an adhesive-based design and a machine learning algorithm, the device is engineered to minimize motion artifacts and reduce inappropriate shock detections while maintaining continuous protection.
The system is primarily utilized by cardiologists, electrophysiologists, and emergency medicine physicians. It is prescribed for adult patients at elevated risk of SCA who are temporarily ineligible for an implantable cardioverter-defibrillator (ICD), have long-term contraindications to ICD therapy, or are transitioning between device implantations. The care setting spans outpatient home monitoring, transitional care, and hospital environments.
In clinical workflows, the Jewel P-WCD integrates as a temporary therapeutic bridge. It continuously records ECG data and communicates with a dedicated mobile application to assist in patient management. Notable capabilities include:
- Water-Resistant Design: Allows patients to wear the device continuously, including during showering, to minimize compliance gaps.
- Machine Learning Detection: Employs advanced algorithms to accurately identify ventricular tachycardia and ventricular fibrillation while mitigating false alarms.
- Patient-Centric Form Factor: Features a low-profile, adhesive patch design that eliminates the bulky harnesses of traditional wearable defibrillators.
Reviewed by Pouyan Golshani, MD — Interventional Radiologist
Key Features
- Patch-based wearable cardioverter defibrillator
- Water-resistant design for continuous wear, including showering
- Machine learning detection algorithm for arrhythmia detection
- Continuous heart rhythm monitoring
- Detects and treats specific life-threatening arrhythmias
- High patient compliance (median wear time over 23 hours/day)
- Discreet, under-clothing design
- Associated Jewel Mobile App for near real-time therapy information to medical team
- Associated cloud platform (ES Cloud, ES Clinical Portal) for connected care
Use Cases
- Patients at risk for Sudden Cardiac Arrest (SCA)
- Patients who are not candidates for or refuse an Implantable Defibrillator
- Individuals with a temporarily elevated risk for SCA
- Continuous cardiac protection during normal daily activities, including showering, sleeping, and moderate exercise
What Physicians Need to Know
The Jewel P-WCD offers a patient-centric design with high compliance due to its comfort, low-profile, and water-resistant nature, allowing continuous wear during daily activities like showering and sleeping. This continuous monitoring and protection are crucial for patients at temporary elevated risk of sudden cardiac arrest (SCA). The sophisticated machine learning algorithm helps ensure accurate arrhythmia detection and a low rate of inappropriate shocks. Leverage the Jewel Mobile App for near real-time access to therapy information, facilitating timely clinical decision-making and patient management. Consider its use in patients who may not be eligible for or decline an ICD, or during temporary periods of elevated risk.
The Jewel P-WCD integrates with the Jewel Mobile App, which serves as a crucial link for transmitting therapy information to the patient's medical team in near real-time. This digital platform supports connected care, enabling healthcare providers to stay engaged with patient management remotely. Data collected by the device can be analyzed and stored by Element Science.
Details
| Category | Cardiology AI, Wearables & Remote Monitoring (RPM) |
| Pricing | Contact vendor — Not publicly available |
| Deployment | Hardware device with associated mobile application and cloud-based digital health platform. |
| Compliance | |
| BAA Available | Unknown AI-estimated |
| HIPAA Compliant | Unknown AI-estimated |
| FDA Status |
Yes AI-estimated The Jewel Patch Wearable Cardioverter Defibrillator (P-WCD) received U.S. Food and Drug Administration (FDA) Premarket Approval (PMA) P230022 in May 2025. It is indicated for adult patients 18 years of age and older who are at risk for Sudden Cardiac Arrest, and either are not candidates for or refuse an Implantable Defibrillator. |
| Integrations | |
| EHR | Not specified |
| Specialties | Cardiology |
What the Web Says
The Jewel Patch Wearable Cardioverter Defibrillator (P-WCD) by Element Science is a novel, water-resistant, adhesive-based device designed to provide continuous protection against sudden cardiac arrest (SCA) for patients at temporary high risk. It aims to improve upon traditional wearable cardioverter-defibrillators (WCDs) by enhancing patient comfort and compliance through its low-profile design and machine learning algorithms to minimize inappropriate shocks. Recent studies, including the Jewel IDE Study and EP Lab Study, have shown promising results regarding its safety, effectiveness in converting life-threatening arrhythmias, and high patient wear-time compliance.
Overall: PositiveStrengths
- High patient compliance with median wear-time over 23 hours per day.
- Water-resistant design allows for continuous wear during daily activities like showering and moderate exercise.
- Low inappropriate shock rate (0.36 shocks per 100 patient-months).
- Effective in converting life-threatening ventricular arrhythmias with a high single-shock success rate (88.9% in one study).
- Machine learning algorithm designed to minimize inappropriate detections and false alarms.
- Discreet and comfortable design, addressing common issues with traditional WCDs.
Limitations
- Clinically significant cutaneous adverse device effects occurred in 2.3% of patients, with 42.6% experiencing some form of skin-related concern (mostly mild rash).
- Currently an investigational device in the US, limiting its availability.
- While WCDs may contribute to overall survival benefits, they may not significantly lower the risk of sudden cardiac death itself.
- The effectiveness of WCDs is closely related to patient compliance.
Based on reviews from: PMC, Element Science, Neuro Central, ClinicalTrials.gov, Cardiac Rhythm News, Sudden Cardiac Arrest Foundation, EP Europace, DAIC, YouTube, Journal of the American College of Cardiology
Last updated: 2026-07-19
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