FLOW FLOW device

Gentle technology for serious care

Designing the future of large-volume injection systems that support, comfort, and empower patients through human-centered innovation.

🏥 Medical Innovation 💙 Patient-Centered 🔬 Research-Driven
Project Product Design
Role Product Designer
Timeline January 2025
Challenge Sanofi x IDEO
"Reimagining medical technology not as cold gadgets, but as companions that support, comfort, and empower patients in their healing journey."
Color Palette
"Addressing the emotional and physical trauma patients experience with current injection devices through thoughtful, human-centered design innovation."
SANOFI IDEO Challenge - Medical Innovation Project

What's the REAL problem to solve?

We started by asking stakeholders and discovered the true patient pain points

Patient stakeholder research

Patients

Understanding the real patient experience beyond medical requirements

Medical workers stakeholder research

Medical Workers

Doctors, Nurses, and Pharmacists sharing frontline insights

Company stakeholders research

Company Stakeholders

Engineers and Marketing teams providing technical constraints

Today, this is what patients endure...

"Adhesive feels like duct tape - itchy, falls off when I sweat"
"I have to admit that I dread my infusions every month. The side effects take time to wear off"
"It feels like being stung repeatedly for five minutes, and then leaves a small welt"
"The amount of sticky stuff is huge and almost impossible to separate from my skin"
"The instructions say... call them immediately... Another set... call your doctor immediately... the phone is only staffed Monday-Friday 8am to 8pm... instructions imply an urgency that isn't really there"
"My wife... it REALLY hurts her. And it takes a long time to complete..."
"My 2nd dose... got the flashing red... phone number is not getting answered... No idea what to do for an unknown delivered amount and a failed injector. I'm going to ask for... prefilled syringes"

Let us show you Layla and Suze's Treatment Day

Two patients, two different experiences with current injection systems. Their stories reveal the human impact behind the medical statistics.

Interactive Story

Layla & Suze's Treatment Journey

Follow two patients through their different experiences with current injection systems. See how design can transform medical care from traumatic to supportive.

📖 11 illustrated panels
Interactive navigation
📱 Full-screen reading
Story preview

The Reality

Traditional injectables create a huge burden of sharps waste every year, while patients struggle with adhesive trauma, confusing instructions, and emotional distress during treatment.

The Vision

The carrying case becomes your sharps container - one less thing to worry about. Treatment becomes manageable, comfortable, and sustainable.

Addressing Patient Needs

Through extensive research, we identified six critical areas where current devices fail patients

🎯

Usability

Problem

Tiny buttons, overwhelming controls, high cognitive load. Confusing IFUs cited as 46% of adherence problems.

Solution

Clear, picture-first steps; simple operation; as few steps as possible (pre-filled, etc.); Care companion guiding you through.

📱

Device Attachment

Problem

Up to 72% report irritation/allergy; painful removal and skin tears. Some resort to cling wrap among other things.

Solution

Adhesive-free fabric wrap attachment option; easy-to-remove breathable adhesive.

💭

Emotional Factors

Problem

Flashing lights, unclear device status, lack of reassurance, uncertainty.

Solution

Warm & familiar design, supportive care companion, clear status indication + progress updates via text messaging.

💊

Site Reactions

Problem

Subcutaneous tissue depth varies widely; if not right, you either hit muscle or deliver into the dermis.

Solution

On-device ultrasound determines SC depth and optimal needle length and avoids blood vessels.

🛡️

Comfort

Problem

Desire for quieter, lighter, low profile, unrestrictive device.

Solution

Decoupled needle, silent pump, minimum dead volume, injection site cooling to reduce discomfort.

Convenience

Problem

Cumbersome travel, having to carry sharps containers; worrying about ice packs, fridge space and temperature.

Solution

Sharps-secure box with built-in cold storage and everything you need for an injection.

Research synthesis and insights Additional research findings Comprehensive research overview Extended journey mapping Journey insights analysis Complete journey documentation

Our Design Process

From problem framing to refined prototypes - a human-centered approach to medical device innovation

01

Framing the Challenge

We began with the prompt: design an adhesive-free, large-volume drug delivery system that patients could trust and companies could scale. Instead of starting with the device, we reframed the problem through people:

Patients: fear of needles, adhesive pain, confusing instructions.
Medical workers: need reliability, low training burden.
Pharma companies: want scalable systems with less waste and strong adherence outcomes.
Initial problem framing and stakeholder insights
Patient journey mapping and research insights
02

Discover – Research & Inspiration

We collected insights from several sources:

Patient voices: we studied first-hand accounts of adhesive discomfort, infusion dread, and instruction confusion
Trends & signals: adhesive alternatives, Duolingo-style behavioral nudges, Tamagotchi companions, Japanese haramaki wraps.
Analogous inspiration: cozy daily objects (scarves, corsets, pets) vs. cold medical devices.

Journey Mapping Revealed Key Pain Points

We mapped each stakeholder's journey and discovered that the real pain points weren't just mechanics, but trust, comfort, and cognitive load:

Patient journey insights Discovery research and insights User personas development Detailed persona specifications
03

Design – Ideation & Prototyping

Using "How Might We" questions, we brainstormed broadly:

How might we make the device feel invisible? → corset-like wrap that hugs the body.
How might we remove adhesives? → elastic fabric + gecko-skin textures for grip
How might we guide patients emotionally? → a digital companion cat ("Kitty"), inspired by Tamagotchi, that gives step-by-step nudges and reassurance
How might we simplify complexity? → one-button interactions, picture-first flipbook instructions.

Our early slogan was "Gentle hugs are nice" to capture the vibe we wanted to achieve.

Ideation and brainstorming session

Exploring Multiple Concepts

Device-first sketches showing adhesive pain points

Early device concepts addressing adhesive trauma

Product sketches exploring form factors

Form factor explorations and user interaction concepts

Tamagotchi-inspired companion development

Digital companion development inspired by Tamagotchi

Scenario planning and concept sketches

Scenario development and early concept sketches

Concept refinement and system vision
04

Refine – Shaping the Concept

From the brainstorm clusters, we converged on a system vision:

Wearable corset-like wrap → replaces adhesive patches, soft and adaptable.
Attachable capsules → drug cartridges that slot in ("bagel-shaped" form factor).
Layered feedback → mechanical/LED indicators for minimalists; optional Kitty companion for those who want emotional support.
Cold chain support → sharps-safe carrying box with built-in cooling for travel.

Solution Development & Iterations

Innovation solution iteration 2 Innovation solution iteration 3 Final innovation solution concepts

Mechanism & Form Exploration

Mechanism exploration for drug delivery Alternative mechanism concepts Advanced mechanism iterations Final mechanism concepts Transfer box concepts with cooling Iterative prototype improvements

Physical Prototyping & Validation

We built low-fidelity prototypes to test our concepts, from elastic fabric mockups to adhesive pull-tabs and cling-wrap hacks. These experiments validated that comfort could be achieved without compromising functionality.

Physical prototype showing wrap concept

"Gentle hugs are nice" - testing the wrap concept

Prototype development and testing

Iterating on comfort and functionality

Humanizing Through Storyboards

We used storyboards and illustrations to humanize the design, showing patients gaining comfort through the wrap and Kitty's guidance, medical workers reducing training time, and companies seeing improved adherence and sustainability.

Companion interaction storyboard

FLOW Generational Roadmap

A progressive evolution of injection systems, each generation addressing specific patient pain points through iterative innovation

Generation 1 2 years to market

Foundation: Addressing Adhesive Trauma

The first generation tackles the most immediate patient pain point: adhesive trauma. By introducing comfortable alternatives and visual guidance, Gen 1 creates the foundation for trust and comfort.

Key Innovations

  • Comfortable Next-gen Adhesive: Based on 3M Tegaderm® technology with easy-apply & remove system
  • Needle Suspension: Prevents discomfort, drug leakage, and tissue damage with 3 depth options (6, 9, 12 mm)
  • Visual Flipbook Instructions: User-friendly, picture-first guidance that reduces confusion
  • Silent Pump Technology: Elastic bladder system with no dead volume for complete drug delivery
  • Simple Drug Transfer: 2-step process that minimizes complexity and user error
"Gen 1 immediately eliminates the 'duct tape' feeling that 72% of patients report, while maintaining secure device placement and reliable drug delivery."
FLOW Generation 1 features
FLOW Generation 2 features
Generation 2 5 years to market

Comfort Revolution: Adhesive-Free Design

Building on Gen 1's success, Gen 2 completely eliminates adhesives with an elastic wrap system and introduces integrated cold storage to address medication anxiety.

Key Innovations

  • Comfy Elastic Wrap: Adhesive-free device attachment that feels like a gentle hug
  • Cold Storage Transfer Box: Built-in PCM + active cooling to maintain 2-8°C temperature
  • Connectivity Features: Device state notifications, adherence reminders & EHR/EMR integrations
  • 1-Step Drug Transfer: Streamlined process for even greater simplicity
  • Integrated Sharps Disposal: Built-in safety system reduces waste and anxiety
"Gen 2 transforms the patient experience from medical procedure to supportive care, with zero adhesive trauma and guaranteed medication safety."
Generation 3 7 years to market

Intelligent Care: AI-Powered Support

Gen 3 introduces intelligent injection site optimization and emotional AI support, creating a truly personalized treatment experience that adapts to each patient's needs.

Key Innovations

  • Ultrasound-Guided Injection: Automatically determines optimal depth and avoids blood vessels
  • Flexible Cannula System: Reduces tissue damage and improves comfort during injection
  • Voice-Enabled Care Companion: AI-powered "Kitty" provides reassurance and adherence support
  • Pre-filled Toroidal Cartridge: Gas-driven plunger system for precise delivery
  • Predictive Analytics: AI insights help optimize injection timing and site rotation
"Gen 3 represents the future of patient-centered care: technology that not only delivers medication safely but provides emotional support throughout the journey."
FLOW Generation 3 features
FLOW Generation 4 features
Generation 4 10+ years (speculative)

Future Vision: Needle-Free Innovation

The speculative fourth generation explores cutting-edge technologies that could revolutionize drug delivery, moving beyond needles toward completely painless, sustainable treatment methods.

Speculative Technologies

  • Microneedle Patches: Painless drug delivery through microscopic needle arrays
  • Jet Injection Systems: High-pressure delivery that eliminates needles entirely
  • Steerable Cannula Technology: Precise, computer-guided drug placement
  • Biodegradable Materials: Fully sustainable device components that dissolve safely
  • Predictive Health Monitoring: Continuous biomarker tracking and treatment optimization
"Gen 4 envisions a future where treatment becomes invisible—no pain, no waste, no anxiety. Just gentle, effective care that adapts to your life."

The Complete FLOW Ecosystem

Features across FLOW generations showing progressive innovation

Each generation builds upon the previous, creating a comprehensive ecosystem that evolves with technology while maintaining our core principle: making treatment feel supportive, not traumatic.

Design Principles

From Trauma to Trust: Six principles that guide every design decision

🏠

Simplicity

Picture-first, step-by-step actions that eliminate confusion and build confidence through clear visual guidance.

💙

Comfort

Adhesive-free elastic wrap that provides a "gentle hug" instead of painful tape that tears skin and causes trauma.

🛡️

Reliability

Needle suspension with multiple depth options and integrated thermostat to ensure medication safety and proper delivery.

🤗

Emotional Safety

Friendly Care Companion ("Kitty") that provides reassurance and guidance without clinical coldness or judgment.

🌱

Sustainability

Reusable transfer box, reduced adhesives, and built-in sharps storage to minimize environmental impact and waste.

Scalability

Generational roadmap (Gen 1 → Gen 4) that evolves with technology while maintaining core patient-centered principles.

"Designing for medical devices means designing for vulnerability. Every choice—from the wrap material to the companion's voice—should make patients feel supported, not exposed."

More Case Studies

Layla & Suze's Treatment Journey

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Storyboard panel
🏆

Thank You for Reading Our Patient's Story

It means a lot to us and them. You've witnessed Layla and Suze's journey and now understand the human impact behind our design decisions. Every patient deserves care that feels safe, supportive, and empowering.