What macu4 does

macu4 is a privately held medical device company founded in 2021 that designs, 3D-prints, and distributes modular arm prostheses and hand orthoses for individuals with congenital or acquired forearm deficits. The company operates three product systems — Explorer (arm prosthesis for children and adults), Lynk (hand orthosis), and Lumo (toddler-focused system) — built on a common modular architecture in which a fitted cuff or socket serves as the base and exchangeable activity-specific modules (e.g., bike, swim, ball, hold, clamp, hook, pinch) are attached via magnetic closures and lacing systems. Underlying technical components include proprietary photo-based remote measurement workflows, fully customized 3D-printed sockets, and cross-line module compatibility, with the portfolio also covering hand positioning aids and bespoke ("Sonderanfertigung") custom-made components.

The company monetizes through one-time hardware sales of these configured systems and modules, priced via custom quote-based pricing rather than fixed list prices, and supports both direct-to-consumer orders and prescriptions routed through orthotists, prosthetists, and rehabilitation professionals. Distribution is executed through two coordinated legal entities — macu4 GmbH (Konstanz, Germany) covering Europe and the USA and macu4 AG (Zürich, Switzerland) covering Switzerland — with shipments fulfilled via DPD, UPS, GLS, and DHL. GTM combines a multilingual e-commerce storefront (DE/EN/FR/ES), social media presence on Facebook, Instagram, and LinkedIn, YouTube application videos, downloadable measurement guides, and a consultative quote-to-order flow, while customer reach extends across German-speaking markets and selected international regions.

Revenue, ownership, and detailed company history are not publicly disclosed. To date macu4 has raised approximately $1.04 million across four funding events between 2021 and 2024, including a ~$697K round from Höhle der Löwen Schweiz in November 2022 and a (zero-amount) engagement with Business Angels Switzerland in December 2024. Management is led by co-founder and Managing Director Dr. Myriam Lingg across both entities, alongside co-founders Alec Chevrot (COO, R&D) and Lukas Schiller (CTO).

Name

macu4

Legal name

macu4 GmbH

Website

https://macu4.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

11–50 employees

Short description

macu4 designs, 3D-prints, and sells modular arm prostheses and hand orthoses (Explorer, Lynk, Lumo systems) for individuals with forearm deficits, distributing direct-to-consumer and via orthotists/prosthetists across Europe, the USA, and Switzerland.

Ownership category

akta.pro rank

Product category

Prosthetic and Orthotic Medical Devices

NAICS

Surgical Appliance and Supplies Manufacturing (339113), Surgical and Medical Instrument Manufacturing (339112)

SIC

Orthopedic, Prosthetic & Surgical Appliances & Supplies (3842)

akta.pro primary industry

Limb Prosthetics (Upper/Lower Extremity Prosthetic Systems) (HLAHAEAH)

akta.pro secondary industries

Prosthetic Components & Rehabilitation Accessories (Liners, Feet, Knees, Sockets) (HLAHAMAD), Orthotics & Bracing (AFO/KAFO, Spinal, Soft Goods Supports) (HLAHAMAC), Sports & Active Rehabilitation Devices (Adaptive Sports Mobility, Performance Prosthetics) (HLAHAMAJ), Rehabilitation Therapy Equipment (PT/OT Modalities, Exercise & Balance Devices) (HLAHAMAG)

Keywords

• 3D-printed prosthetics
• Modular medical devices
• Arm orthotic systems
• Prosthetic hand modules
• Assistive medical aids

Headquarters

HQ city

Zürich

HQ country

Switzerland

HQ region

Europe

Offices2 records

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales

Revenue model

1. Medical Device Sales: Sale of 3D-printed arm prosthetics, hand orthoses, and modular accessories (Explorer, Lynk, and Lumo systems). Products include base components (cuffs, sockets), exchangeable modules, and accessories. Sales are made directly to end users and through distribution partners in Europe, USA, and Switzerland.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

macu4 designs, manufactures, and sells modular 3D-printed arm prosthetics and hand orthoses under three product systems (Explorer, Lynk, Lumo). Each system comprises a base component (cuff or socket) and exchangeable activity-specific modules that users can swap for sports, daily tasks, mobility, and rehabilitation. Products are custom-fitted using a proprietary photo-based remote measurement process.

Product overview

macu4 develops and manufactures modular medical aids for the hand and arm, including arm prostheses and hand orthoses. The company offers three main product systems: Explorer System (for children and adults with forearm deficits), Lynk System (hand orthosis with 3D-printed components), and Lumo System (for toddlers and young children). All systems use a modular architecture with base components (cuffs/sockets) and exchangeable activity-specific modules (terminal devices) that can be swapped based on the user's desired activity. The products are 3D-printed and lightweight, featuring magnetic closures and lacing systems for easy use. macu4 also provides custom-made products (Sonderanfertigungen) and hand positioning solutions. The portfolio supports activities including daily tasks, sports (cycling, swimming, archery, tennis), household tasks, and rehabilitation.

Differentiator

Problem solved

Functional benefit

Brands

• Explorer System: Modular arm prosthesis system for children and adults with exchangeable modules for various activities such as sports, cycling, swimming, and daily tasks.
• Lynk System
• Lumo System
• Confidence Shield
• Hand Positioning (Lynk Rest Module)

Products and services

• Explorer System Modular arm prosthesis system for children and adults with forearm deficits. Includes a socket base component (rotationally symmetric or fully customized) with exchangeable activity-specific modules such as Hold Lock, Ball, Bike, Swim, Pinch, and Twin. Used for daily activities, sports, and recreation.
• Lynk System Modular hand orthosis system with 3D-printed lightweight components. Features a cuff base (7 sizes, two lengths, up to four circumference variants) and modules such as Clic Lock, Hold Lock, Hook, Push, and Hold. Uses magnetic closure and lacing system for easy donning/doffing. Targets cycling, household tasks, archery, fitness, and similar activities.
• Lumo System Modular hand orthosis and arm prosthesis system designed for toddlers and young children with forearm deficits. Features a personalized cuff (10 sizes, two circumference variants, 5 length compensation options) or rotationally symmetric socket base, paired with modules such as Roll, Shovel, Clamp, and Hold. Photo-based measurement system enables remote sizing for activities such as sandbox play, handicraft, and eating.
• Hand Positioning (Lynk Rest Module) Ergonomic hand rest module for precise and functional hand positioning. Combines with Lynk cuff and Lynk modules; available in standardized or customized shapes to optimize comfort and positioning.
• Customizations (Sonderanfertigungen) Custom-made products tailored to individual anatomical and functional needs, including customized sockets, Palm Support, and other components based on medical prescriptions and patient-specific measurements.

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators1 record

Recent moves6 records

Expansion highlights5 records

Emerging players

• Open Bionics: UK-based developer of 3D-printed bionic upper-limb prostheses (Hero Arm). Comparable to macu4 through shared use of 3D printing for personalized arm prosthetics and a direct-to-consumer commercial model targeting children and adults with limb differences.
• Unlimited Tomorrow: US-based developer of 3D-printed custom prosthetic arms using remote scanning. Comparable to macu4 through 3D-printed upper-limb prosthetics and remote fitting workflows targeting similar congenital and acquired limb-difference populations.
• Aether Biomedical: Poland-based developer of advanced bionic upper-limb prostheses (Zeus hand). Comparable as an emerging player in upper-limb prosthetics focused on improving function for limb-difference patients, overlapping with macu4's target customer base.
• e-NABLE Community Foundation: Global volunteer community producing 3D-printed prosthetic hands, particularly for children. Comparable to macu4 through shared use of 3D printing for upper-limb devices aimed at pediatric populations, though distributed free/donation-based rather than commercially.
• Taska Prosthetics: New Zealand-based developer of multi-articulating prosthetic hands designed for everyday, water, and rugged use. Comparable as an emerging player in activity-oriented upper-limb prosthetics for users needing durable, activity-specific devices.

Broad incumbents

• Ottobock: Global leader in prosthetics, orthotics, and rehabilitation technology headquartered in Germany. Comparable as a broad incumbent serving the same upper-limb patient population with products like bebionic and Michelangelo hands, plus orthotic solutions, while operating at vastly greater scale.
• Össur: Icelandic global leader in non-invasive orthopaedics including upper-limb prosthetics and bracing solutions. Comparable as a broad incumbent whose Touch solutions and i-Limb product lines overlap with macu4's upper-limb and orthotic categories.
• Fillauer: US-based manufacturer of prosthetic and orthotic components including upper-limb prosthetic hands, mechanical fingers, and orthotic components. Comparable as an established component vendor serving orthotists and prosthetists in the same supply chain as macu4.
• College Park Industries: US manufacturer of custom and standard prosthetic devices including upper-limb components and terminal devices. Comparable as an incumbent component and finished-device vendor serving prosthetists fitting the same end-user population.

Direct peers

• Koalaa: UK-based startup producing soft, lightweight, 3D-printed upper-limb prosthetic aids for children and adults. Highly comparable to macu4 — similar product philosophy (lightweight, modular, activity-focused, child-friendly), direct-to-consumer approach, and addressable market.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/macu4
• LinkedInlinkedin.com/company/macu4
• Instagraminstagram.com/macu4sports

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds4 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about macu4