Selected Portfolio

Industrial &
UX/Product Design

Diego A. López Ratti

02 / Profile & focus

Across object,
interface & use.

01Physical product design

02UX/UI & digital product work

03Healthcare / medical products

04CAD, product development & prototyping

05Biomedical engineering perspective

03 / Selected project index

Selected
work

  1. [IMAGE PENDING]

    01OXEEN Watch

  2. [IMAGE PENDING]

    02Custom Semi-Rigid Hand Prosthesis

  3. [IMAGE PENDING]

    03Palex / Infusion Pump Housing

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    04Operating Room AV Drawers

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    05Aerodam 360

  6. [IMAGE PENDING]

    06Streaming on Set

  7. [IMAGE PENDING]

    07AER Barcelona

  8. [IMAGE PENDING]

    08UX/UI & Web Work

01 / Selected project

OXEEN Watch

Resident Monitoring Wearable

Healthcare · Connected Product · Industrial Design

Blue and red OXEEN resident monitoring wristbands

Explore the redesign

Front views of the blue and red OXEEN Watch variants

Human-centred redesign

Designed for daily use in residential care.

This redesign focused on turning a test-phase device into a more usable, comfortable and visually approachable wearable.

Connected protection

Monitoring, safety and response in one device.

Blue OXEEN Watch shown from the front
  • Body temperature
  • Blood oxygen
  • BPM
  • Fall detection
  • SOS button
  • Resident location

A connected wearable designed to support faster, more informed care.

Engineering / enclosure design

Designed around the electronics.

The redesign required translating electronic constraints into a compact, prototype-ready wearable enclosure.

OXEEN outer enclosure CADExisting electronics positioned within the OXEEN enclosure architectureInternal shell architecture of the OXEEN wristband
  • PCB integration
  • Internal architecture
  • Strap attachment
  • Prototype-ready CAD

Product context

Part of a connected care ecosystem.

The wearable sends resident data into a centralized monitoring system, connected through LoRaWAN infrastructure and surfaced through platform and app interfaces.

  1. 01Blue OXEEN WatchOXEEN Watch
  2. 02LoRaWAN
  3. 03Gateway
  4. 04Cloud
  5. 05Platform / App

Connected ecosystem shown as product context.

Role

My contribution

Lead product designer for the wristband redesign.

  1. Concept development
  2. CAD
  3. Enclosure design
  4. Prototyping
  5. Rendering
  6. Project management
Top view of blue and red OXEEN Watch variants

OXEEN × INNOU

Physical product,
connected care.

A healthcare wearable redesign balancing usability, electronic integration and system connectivity.

02 / Selected project

Custom
Semi-Rigid
Hand Prosthesis

Personalized upper-limb prosthesis for congenital partial hand absence.

Prosthetics · User-centred design · CAD · Additive manufacturing

CAD render of the custom semi-rigid hand prosthesis
Custom prosthesis worn by the user during a fitting session

User-specific design

Designed around one person,
not a standard size.

The project began with a user with congenital absence of the hand and partial wrist anatomy, looking for an affordable prosthesis primarily for everyday and social use.

The goal was a comfortable, personalized device that could also be worn under a glove to approximate the appearance of a natural hand.

Visual direction requested by the user: Deus Ex–inspired.

Functional development

Turning an aesthetic model
into a wearable prosthesis.

The initial geometry required functional development in SolidWorks to accommodate articulation, assembly, the residual-limb interface and additive manufacturing.

Dorsal CAD view of the prosthesisUnderside CAD view showing articulated finger hardwarePalm-side CAD view of the prosthesis

Aesthetic geometry → articulation → wearable architecture

Articulation

Positionable by hand.
Stable in use.

Each finger can be manually repositioned using the opposite hand and remains rigid in the selected pose.

The solution prioritised visual versatility and everyday simplicity rather than powered actuation.

Physical prosthesis with its manually positionable digits posed
  • Manually positionable digits
  • Articulated thumb
  • Standard mechanical hardware
Detailed CAD view of the slotted residual-limb interface

Custom interface

Designed for the user's
remaining anatomy.

The prosthesis interfaces with the residual limb through a prosthetic cotton sleeve and a Velcro compression strap, allowing the device to be secured around the remaining wrist anatomy.

Residual-limb interface

Additive manufacturing

From CAD
to a fitted physical prosthesis.

The final device was produced as a single MJF-manufactured unit and assembled using standard screws and mechanical hardware.

Front view of the black MJF-manufactured prosthesisThree-quarter view of the physical prosthesisSide view of the physical prosthesisPhysical prosthesis with manually positioned fingers

One final physical unit · MJF · Mechanical assembly

User fitting

Designed,
fitted and evaluated
with the user.

The final prosthesis was fitted directly with the user to assess positioning, comfort and everyday usability.

The user reported being satisfied with the final result and comfortable wearing the device.

Prosthesis worn during the user fittingUser manually repositioning the prosthesis fingers with the opposite hand

Manual repositioning demonstrated during the fitting session.

My contribution

From brief
to physical fitting.

Lead designer for the functional adaptation, CAD development, prototyping and fitting phases.

  1. Brief analysis
  2. Functional concept adaptation
  3. SolidWorks CAD
  4. Mechanical development
  5. Prototyping
  6. Fitting
  7. Project management

Custom prosthetics

Designed around anatomy,
identity and use.

A custom prosthetic solution balancing appearance, comfort, manufacturability and cost.

Palm view of the finished custom hand prosthesis

03 / Selected project

Palex / Infusion Pump Housing

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Hero / product[IMAGE PENDING]
Housing detail[IMAGE PENDING]
Engineering / process[TECHNICAL IMAGE PENDING]

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04 / Selected project

Operating Room AV Drawers

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Integration[IMAGE PENDING]
Hardware arrangement[IMAGE PENDING]
Mechanical detail[TECHNICAL IMAGE PENDING]

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05 / Selected project

Aerodam 360

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Hero / product[IMAGE PENDING]
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Process[TECHNICAL IMAGE PENDING]

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06 / Selected project

Streaming on Set

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Hero[IMAGE PENDING]
Enclosure[IMAGE PENDING]
Internal / electronic layout[TECHNICAL IMAGE PENDING]
Battery / interface detail[TECHNICAL IMAGE PENDING]
Thermal / engineering[TECHNICAL IMAGE PENDING]
Prototype[IMAGE PENDING]
Final product[IMAGE PENDING]
Contextual image[IMAGE PENDING]

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07 / Selected project

AER Barcelona

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Physical product / object[IMAGE PENDING]
System / customization process[IMAGE PENDING]
Digital interface[IMAGE PENDING]
Generated / visual output[IMAGE PENDING]
Final application[IMAGE PENDING]

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08 / Selected project

UX/UI & Web Work

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Interface overview[IMAGE PENDING]
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Flow[IMAGE PENDING]
Interaction[IMAGE PENDING]

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12 / Contact sheet

Additional
selected projects

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    Handpoem

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    Rolser

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    San Miguel

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    Carbi

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13 / End frame

Diego A.
López Ratti

  • Master's in Biomedical Engineering — ongoing
  • Master's in Sustainable Product Design & Ecodesign
  • Bachelor's Degree in Product Design
  • Previous studies in Medicine

Contact

[EMAIL PENDING]

[LINKEDIN PENDING]