Mein UKB

Mein UKB

Personal hospital companion for clinical services and treatment support

Usability Engineering

2024 - 2025

Universitätsklinikum Bonn

Featured in Publications

Bresser, L., Heinemann, M., Chaikevitch, P., & Jonas, S. (2025).

Development of a Patient-Centered App for an University Hospital: An Usability Engineering Approach. Studies in health technology and informatics, 327, 964-968.

Chaikevitch, P. (2025).

Usability Engineering for patient apps. adesso Blog.

Project profile

The University Hospital Bonn (UKB) is one of Germany’s leading medical institutions, providing comprehensive care and clinical research across a wide range of specialties. As part of the “Innovative Secure Medical Campus” (ISMC) digitalisation initiative, UKB set out to create a mobile solution that would make navigating hospital processes simpler, more transparent, and more patient-friendly. The goal was to empower patients and their relatives throughout the entire clinical journey — from referral to recovery — by giving them access to a broad spectrum of digital services and tools for self-managing medical matters.

Mission Statement

The “Mein UKB” app was developed as a core component of the University Hospital Bonn’s “Innovative Secure Medical Campus” initiative, aiming to simplify and enrich the patient journey from referral to recovery. Serving a highly diverse audience — from first-time outpatients to long-term inpatients and their relatives — the project demanded solutions that could function across different specialist clinics, each with its own workflows and technical constraints.

Our team’s mission was to design an intuitive, accessible mobile application that supports patients in navigating appointments, finding their way around campus, managing administrative tasks, and accessing services with ease. By applying a rigorous user-centred process — from understanding the clinical context to validating patient journeys — we ensured the final solution could adapt to complex healthcare environments while relieving staff workload and improving patient satisfaction.

BELFRY

MEDICAL COMPANION

MDR-compliant mobile Health App for a physical Medical Device

Product Design

2023 - 2024

Belfry Medical GmbH

as part of Sanity Group GmbH

Usability Engineering

2024 - 2025

Universitätsklinikum Bonn

Featured in Publications

Bresser, L., Heinemann, M., Chaikevitch, P., & Jonas, S. (2025).

Development of a Patient-Centered App for an University Hospital: An Usability Engineering Approach. Studies in health technology and informatics, 327, 964-968.

Chaikevitch, P. (2025).

Usability Engineering for patient apps. adesso Blog.

Belfry Medical specializes in controlled medical substance therapy through an advanced inhalation device, offering microgram-level precision dosing.


To improve treatment monitoring and help patients take control of their therapy, my team and I designed the user-centric Belfry Medical Companion App. This MDR-compliant mobile health solution offers full transparency throughout the treatment process, reduces the risk of addiction and misuse, and optimizes both outcomes and cost efficiency.


The Belfry Medical Companion supports responsible use of the cannabis inhaler by tracking device status, recording therapy data, and serving as a symptom diary. It logs usage history, provides timely reminders, and seamlessly links key inhaler functions to the user’s smartphone.

Mission Statement

Our team designed the Belfry Medical Companion App — a user-focused, compliant digital tool that provides patients with transparency and control over their therapy. By tracking device status, recording detailed therapy data, and offering a symptom diary, the app helps reduce the risk of addiction and misuse while optimizing treatment outcomes and cost efficiency. Features such as usage history, timely reminders, and smartphone-linked inhaler controls ensure patients can manage their therapy responsibly and with confidence throughout the entire treatment process.

The “Mein UKB” app was developed as a core component of the University Hospital Bonn’s “Innovative Secure Medical Campus” initiative, aiming to simplify and enrich the patient journey from referral to recovery. Serving a highly diverse audience — from first-time outpatients to long-term inpatients and their relatives — the project demanded solutions that could function across different specialist clinics, each with its own workflows and technical constraints.

Our team’s mission was to design an intuitive, accessible mobile application that supports patients in navigating appointments, finding their way around campus, managing administrative tasks, and accessing services with ease. By applying a rigorous user-centred process — from understanding the clinical context to validating patient journeys — we ensured the final solution could adapt to complex healthcare environments while relieving staff workload and improving patient satisfaction.

The “Mein UKB” app was developed as a core component of the University Hospital Bonn’s “Innovative Secure Medical Campus” initiative, aiming to simplify and enrich the patient journey from referral to recovery. Serving a highly diverse audience — from first-time outpatients to long-term inpatients and their relatives — the project demanded solutions that could function across different specialist clinics, each with its own workflows and technical constraints.

Our team’s mission was to design an intuitive, accessible mobile application that supports patients in navigating appointments, finding their way around campus, managing administrative tasks, and accessing services with ease. By applying a rigorous user-centred process — from understanding the clinical context to validating patient journeys — we ensured the final solution could adapt to complex healthcare environments while relieving staff workload and improving patient satisfaction.

Project profile

Belfry Medical specializes in controlled medical substance therapy using an advanced inhalation device capable of microgram-level precision dosing. The company set out to complement this hardware with a digital solution that would enhance treatment monitoring, strengthen patient engagement, and support responsible therapy management. The goal was to create a mobile health application that not only integrates seamlessly with the inhaler but also meets strict MDR compliance standards for safety and reliability.

The University Hospital Bonn (UKB) is one of Germany’s leading medical institutions, providing comprehensive care and clinical research across a wide range of specialties. As part of the “Innovative Secure Medical Campus” (ISMC) digitalisation initiative, UKB set out to create a mobile solution that would make navigating hospital processes simpler, more transparent, and more patient-friendly. The goal was to empower patients and their relatives throughout the entire clinical journey — from referral to recovery — by giving them access to a broad spectrum of digital services and tools for self-managing medical matters.

The University Hospital Bonn (UKB) is one of Germany’s leading medical institutions, providing comprehensive care and clinical research across a wide range of specialties. As part of the “Innovative Secure Medical Campus” (ISMC) digitalisation initiative, UKB set out to create a mobile solution that would make navigating hospital processes simpler, more transparent, and more patient-friendly. The goal was to empower patients and their relatives throughout the entire clinical journey — from referral to recovery — by giving them access to a broad spectrum of digital services and tools for self-managing medical matters.

Position and contributions

In the role of Usability Engineering Lead, I was responsible for steering the process of turning extensive pre-project research into clear, actionable design foundations. Together with the Institute for Digital Medicine of UKB, we translated over 900 uncategorized requirements — gathered from patient interviews and workshops with medical professionals across six specialized clinics — into 32 core tasks and 120 sub-tasks for the “Mein UKB” app.


Serving as Art Director, I led the creative direction from low-fidelity prototypes to high-fidelity UI design, ensuring the visual language conveyed clarity, trust, and the hospital’s identity. Accessibility remained a central focus, and I facilitated close collaboration between the client and accessibility experts to make the app inclusive for patients of all abilities.

Responsibilities

Art Direction

Usability Engineering

Requirements Engineering

Splash Screen & Onboarding

Three smartphones above each other
Three smartphones above each other
Three smartphones above each other

Home Dashboard

Smartphone standning behind medical cannabis inhaler
Smartphone standning behind medical cannabis inhaler
Smartphone standning behind medical cannabis inhaler

Appointment management

Woman with a smartphone in her hand
Woman with a smartphone in her hand
Woman with a smartphone in her hand

Family profiles

Smartphone in the hands of a user
Smartphone in the hands of a user
Smartphone in the hands of a user

On-campus Navigation

Smartphone in the hands of a user
Smartphone in the hands of a user
Smartphone in the hands of a user

Task management

Responsibilities

Art Direction

Requirements Engineering

Usability Engineering

(acc. to ISO 62366-1)

Usability Engineering

Usability Engineering

Woman with a smartphone in her hand

Onboarding process

Three smartphones above each other

Belfry Medical Companion Dashboard

Smartphone standning behind medical cannabis inhaler

Treatment overview

Inhalation assistant

Smartphone in the hands of a user

Treatment Check-Up

Key Details & Numbers

Project duration

9 months

Creative Team led

3 designers / researchers

Process & Methods

Requirements Extraction

Reviewed raw patient interview transcripts and workshop notes from six specialized clinics to identify every explicit and implicit requirement mentioned.

User Group Categorization

Organized all extracted requirements into groups based on the specific needs of different user types within the hospital ecosystem.

Task Assembly

Clustered related requirements within each user group into coherent tasks, reflecting real-world usage scenarios.

Key Task Consolidation

Merged and prioritized tasks across all groups to define 32 core tasks and 120 sub-tasks forming the foundation for the “My UKB” app design.

Software Stack

Figma

Confluence

as Quality Management System

Berlin, 2025.

All images are presented for portfolio and illustrative purposes only. They are not licensed for commercial use, reproduction, or distribution.

Berlin, 2025.

All images are presented for portfolio and illustrative purposes only. They are not licensed for commercial use, reproduction, or distribution.

Berlin, 2025.

All images are presented for portfolio and illustrative purposes only. They are not licensed for commercial use, reproduction, or distribution.