The
DUALFLO
Platform
Two Drugs. One Injection.
Zero compromises.
Smooth gas-powered delivery administers two drugs in sequence—or one drug at higher volume—all through a single needle.
Built for what can’t be blended.
From biologics that break down when co-formulated to regimens requiring precise timing between drugs, DualFlo is ideal for therapies that demand separate containment—while delivering a unified patient experience.
Explore the DualFlo autoinjector for
Therapies that require sequential injection of two liquids
Permeation enhancer + active drug combinations
Biologics or drugs that degrade when co-formulated
Injection regimens currently requiring multiple injections
Large-volume therapies, where both cartridges are filled with the same drug to enable a 6mL therapy with a single injection.
Fewer steps.
Fewer sticks.
Fewer tradeoffs.
DualFlo reimagines combination therapy delivery by simplifying the workflow for patients, providers, and pharma alike.
| DUALFLO STREAMLINES LARGE VOLUME AND SEQUENTIAL THERAPIES | ||
|---|---|---|
| ⛔️ Multiple injections for non-co-formulated therapies | → | ✅ Single, seamless delivery through one needle |
| ⛔️ Duplicated components and excess packaging | → | ✅ Integrated, sustainable dual-cartridge design |
| ⛔️ Co-formulation reformulation delays | → | ✅ Independent dosing accelerates development |
| ⛔️ Clinic-only administration | → | ✅ At-home delivery for greater patient comfort and access |
Smarter delivery.
Smaller footprint.
DualFlo’s unified design reduces the material, waste, and patient burden typically required to administer multiple drugs separately—offering a greener, more scalable path to market.
Divide and Deliver
Using a proprietary dual-cartridge system and gas-powered actuation, DualFlo effortlessly delivers two liquids in sequence through a single cannula—without requiring manual intervention or additional preparation.
✅
Gas powered
✅
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 Duplex Difference
From Incompatible to Integrated
Gas-powered, sequential delivery
Enables therapies that require timing or separation
Single-cannula injection
Reduces needle sticks and improves patient comfort
No co-formulation needed
Cuts reformulation time, cost, and regulatory lift
ISO cartridge supply chain
Seamlessly integrates into existing fill/finish processes
Customizable timing and sequencing
Device-designed delay between doses for optimized pharmacokinetics
Feasibility-backed. Partner-approved.
Windgap has hundreds of patents issued globally 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.
Need to mix it up?
Windgap delivers solutions.
Whether you’re working with sequential regimens, high-viscosity biologics, or lyophilized powders, there’s a Windgap platform built to simplify, automate, and accelerate the path to market—and a better patient experience.
Explore the full platform lineup to find the right starting point, then connect with us to customize your delivery system.
DUALFLO
Two liquid doses. One simple injection. Ideal for large volumes or drugs that can’t be co-formulated.
ONEMIX
The Instant Solution™ for highly soluble lyophilized drugs, designed with an easy two-step delivery.
MULTIMIX
The go-to for difficult-to-mix biologics, suspensions, and lyophilized drugs
Compare Platform Capabilities
| Use Case and Challenges |
DualFlo | OneMix | Multimix |
|---|---|---|---|
| Two Cartridges. One Injection. | The Instant Solution | Complete Mixing. No Shaking. | |
| Drug Format | Liquid + Liquid | Lyophilized, highly soluble | Lyophilized, suspended, or shear-sensitive |
| Formulation Complexity | Moderate | Low to moderate | High |
| Mixing Mechanism | No mixing (sequential delivery) | Single-cycle reconstitution | Multi-cycle, programmable mixing |
| Dose Volume |
Base: 2 x 3mL Adaptable for 1.5 mL to 5 mL cartridges |
Base: 2 x 3mL Adaptable for 1.5 mL to 5 mL cartridges |
Base: 2 x 3mL Adaptable for 1.5 mL to 5 mL cartridges |
| Viscosity Support | High (>5,000 cPs) | Low to moderate | High (>5,000 cPs) |
| Needle Options | 19 to 31G | 19 to 31G | 19 to 31G |
| Reusable or Disposable | Disposable | Disposable | Disposable |
| Use Case Examples | Dual biologics, permeation enhancer + drug |
Acute-use autoinjectors, rapid reconstitution |
mAbs, LAIs, difficult-to-mix biologics |
| Customization Potential |
Moderate (timing, sequence) |
Moderate (recon time and delivery speed) |
High (mix cycles, dwell time, viscosity tuning) |
Built for what comes next.
Drug delivery—and development— is all about doing the right steps, in the right order.
Use the form below to connect with our team and explore how DualFlo (or another Windgap platform) can help you align and advance your molecule, mechanism, and market goals—with precision and purpose.