The
DURAMIX
Platform
Powerful by Design.
Sustainable by Nature.
The first reusable autoinjector of its kind, Duramix delivers precise, repeatable performance for complex, difficult-to-deliver formulations—reducing waste without compromising what matters most.
Sensitive When It Counts. Strong When It Matters.
Whether your therapy demands forceful mixing, gentle handling, or both, Duramix adapts to the needs of complex formulations—and a better patient experience.
Ideal for the delivery of:
High-viscosity therapeutics (>5,000 cPs)
Long-acting injectables (LAIs)
Shear-sensitive suspensions
Cold-chain-sensitive therapies
Giant leaps.
Smaller footprints.
Duramix is redefining sustainable drug delivery. Its reusable platform minimizes waste at every turn—reducing reliance on cold-chain logistics, enabling fewer injections through long-acting formulations, and eliminating single-use device waste.
Duramix BY WINDGAP ELIMINATES:
Cold-chain constraints through formulation stability and durable design
Excess packaging and single-use plastics with a fully reusable platform
Frequent dosing with support for long-acting and extended-release therapies
Disposal burdens for patients and providers
Inefficiencies in mixing and delivery that often require workaround devices
AUTOMATED Mixing
FASTER ADMINISTRATION
Recent Feasibility Study Outcome
TO
15 Seconds
Mixed and Delivered
FROM
13 Minutes
Mixing time
A recent feasibility study involving a 1.3mL dose achieved a 98.08% reduction in administration time.
Platform Specs For a Sustainable Solution
From durable components to high-performance mixing, Duramix respects your formulation, reduces waste, and raises the bar for patient comfort—and therapeutic integrity.
Large-volume
autoinjector
Dual 3mL
ISO cartridges
(1 - 5mL flexible)
Needle Options From 19-31 gauge
(IM & SQ)
High-viscosity capabilities
> 5,000 cPs
Single-hand activation
The Multimix Difference
Reusable, reliable, and ready for what’s next.
Robust architecture and durable components
Designed for multiple uses—reduces environmental impact and total system cost without sacrificing performance.
Unprecedented mixing at the press of a button.
Engineered for highly viscous or hard-to-dissolve drugs with built-in strength and control.
Powerfully gentle on sensitive biologics
Avoids excessive shear forces that can damage molecular integrity, ensuring safe, effective delivery.
Extended dosing capabilities
Supports long-acting injectables (LAIs) and regimens that reduce injection frequency—improving patient experience and adherence.
Built-in sustainability
Minimizes packaging waste, cold-chain reliance, and single-use components while maximizing therapeutic reach.
Feasibility-backed. Partner-approved.
Windgap has 105+ patents issued and is trusted by the top 25 pharma partners for delivering innovative solutions.
75 cP suspension delivered through a 29 XTW cannula
First demonstrated delivery of this drug through such a small needle.
99%
Reduction in Administration Time
In one feasibility study, the MultiMix device reduced the mixing time from 2 HOURS to a mixed and delivered dose in under 60 seconds.
What is your biggest delivery challenge?
Find the Windgap device engineered to meet it.
ONEMIX
The Instant Solution™ for highly soluble lyophilized drugs, designed with an easy two-step delivery.
EXPLORE ONEMIX >
duplex
Two liquid therapies. One injection. Ideal for drugs that can’t be co-formulated.
SEE DUPLEX IN ACTION >
MULTIMIX
The go-to for difficult-to-mix biologics, suspensions, and lyophilized drugs
SCHEDULE A DEMO >
duramix
A powerful, reusable platform for high-viscosity or long-acting injectables.
DISCOVER DURAMIX>
Compare Platform Capabilities
| Use Case and Challenges |
OneMix | Duplex | Multimix | Duramix |
|---|---|---|---|---|
| The Instant Solution | Two Cartridges. One Injection. | Complete Mixing. No Shaking. | Complete Control. Reusable. | |
| Drug Format | Lyophilized, highly soluble | Liquid + Liquid | Lyophilized, suspended, or shear-sensitive | Lyophilized, high-viscosity, variable cycle |
| Formulation Complexity | Low to moderate | Moderate | High | High to very high |
| Mixing Mechanism | Single-cycle reconstitution | No mixing (sequential delivery) | Multi-cycle, programmable mixing | Multi-mode, programmable, user-activated |
| Dose Volume | Up to 2x 3mL | Up to 2x 3mL (configurable) | Up to 2x 5mL | Configurable (multi-cartridge supported) |
| Viscosity Support | Low to moderate | High (>5,000 cPs) | High (>5,000 cPs) | High + customizable thresholds |
| Needle Options | 19 to 31G | 19 to 31G | 19 to 31G | 19 to 31G |
| Reusable or Disposable | Disposable | Disposable | Disposable | Reusable (electronic + docked recharge) |
| Use Case Examples | Acute-use autoinjectors, rapid reconstitution | Dual biologics, permeation enhancer + drug | mAbs, LAIs, IVF, difficult-to-mix biologics | Oncology, gene therapy, cold-chain-sensitive |
| Customization Potential | Low (plug-and-play) | Moderate (timing, sequence) | High (mix cycles, dwell time, viscosity tuning) | Very high (hardware + software configurable) |
Complex drugs don’t have to be difficult to mix.
Let’s Make Your Formulation Work—Without the Workaround.
Whether you’re developing a long-acting injectable, a shear-sensitive biologic, or a hard-to-mix lyophilized drug, Multimix was built to adapt to your molecule—not the other way around