Participant Home-use Experience during Clinical trial of a Wearable PD device (Viva Kompact)

Background

In medical device clinical trials, it is essential to evaluate the usability and acceptability of devices designed for home use. During the pre-pivotal clinical trial of Viva Kompact (Kompact), a wearable PD device we explored participants’ real-world experience and their feedback on proposed improvements of Kompact for home use.

Methods

After completing in-centre training and a competency assessment, participants in the study used Kompact for 7 days in their homes, 3 patients were offered a 23-day extension. At the conclusion of their participation, an adapted System Usability Scale (SUS) comprising of 16 questions (5-point likert scale) in the areas of ease of use and device ergonomics was administered. The higher the score (max=5) indicates a strong agreement to ease of use or satisfaction to a device feature. A total score of ≥35 (ease of use) and ≥21 (ergonomics) would deem the device to be user-friendly. A semi-structured one-on-one audio recorded interview was also conducted.

Results

Ten patients used Kompact in their homes and completed the SUS and interview. 7 completed the 7-day home use and 3 extended for another 23 days. Most participants (70%) deemed the device to be user-friendly, giving device ease of use a score of 40 (IQR: 36 – 47) out of 50 and a score of 23 (19 – 26) out of 30 for device ergonomics). In-depth sharing through the interview revealed areas of optimisation in device weight, noise and set-up time at home.

Conclusion

The participants had an overall positive experience with the device. They consistently found increased family time and travel flexibility, strong portability and gentler therapy with fewer overnight alarms. Overall, these advantages suggest that the wearable device meaningfully enhances patient independence, comfort, and daily-life integration while maintaining reliable, user-friendly therapy.

Presented at ISPD Congress 2026, Cape Town, South Africa, 29 September – 03 October 2026.

Authors:

• Arsh Jain, London Health Sciences Centre, Ontario, Canada

• Htay Htay, Singapore General Hospital, Singapore

• Edwina Brown, Imperial College London, London, United Kingdom

• Martin Schreiber, Cleveland Clinic, OH, United States; Vivance, CA, United States

• Sheena Gow, Vivance, Singapore

• Jason Lim, Vivance, Singapore

• Mandar Gori, Vivance, CA, United States

• Marjorie Foo, Singapore General Hospital, Singapore