Xinfuda combines a reusable pen body with a replaceable dual chamber cartridge for B2B projects where a lyophilized drug and diluent, or two compatible liquid components, must remain separated until use. The medicine-containing cartridge can be changed according to the project plan while the device body remains in the treatment system.
The platform is intended for early drug-device evaluation covering cartridge fit, in-pen reconstitution, dose strategy, repeated-use workflow, samples and OEM/ODM customization. Project evaluation should begin with the cartridge drawing, chamber volumes, stopper and bypass design, viscosity after reconstitution, target delivered dose and intended user workflow.
| Device type | Reusable dual chamber cartridge pen |
| Device lifecycle | Repeat-use pen body with a project-matched replaceable cartridge |
| Primary container | Dual chamber cartridge with chamber, stopper and bypass configuration subject to fit evaluation |
| Formulation direction | Lyophilized drug plus diluent, or compatible liquid-liquid projects requiring separated storage |
| Reconstitution direction | In-pen activation and mixing sequence defined by the final cartridge and device configuration |
| Dose direction | Fixed-dose or variable-dose strategy to be confirmed by the project team |
| Best-fit program | Repeated-treatment projects evaluating replaceable dual chamber cartridges |
| Customization | Color, surface finish, logo, label and packaging discussion |
| Quality context | ISO13485 quality management support and ISO 11608-1:2022 requirement discussion |
The pen body remains in the treatment system while the medicine-containing cartridge is replaced according to the final project plan.
Cartridge drawing, chamber allocation, stopper position, bypass design and filling volumes are reviewed together.
Two compatible components can remain in separate cartridge chambers before use.
The project workflow is designed around combining the separated components inside the cartridge before injection.
Fixed-dose or variable-dose direction can be reviewed after formulation, cartridge and intended-use requirements are confirmed.
Color, surface finish, logo, label, packaging and available documentation can be discussed for B2B projects.
| Project point | Reusable dual chamber direction | Single-use dual chamber direction |
|---|---|---|
| Shared purpose | Separated storage and in-cartridge reconstitution before injection | Separated storage and in-cartridge reconstitution before injection |
| Device plan | Pen body retained and project-matched cartridge replaced | Medicine cartridge and device planned as one complete unit |
| Workflow direction | Load, reconstitute, inspect, prepare dose and inject | Activate, reconstitute and inject according to the final device design |
| Program direction | Repeated-treatment programs using replacement cartridges | Programs requiring a complete single-use device presentation |
| Project discussion | Cartridge fit, reusable lifecycle, mixing, dosing and customization | Activation logic, mixing, dosing, packaging and complete-device planning |
What is a reusable dual chamber cartridge pen?
It is a repeat-use pen device direction designed around a replaceable dual chamber cartridge. The two components remain separated before use and are combined through a validated reconstitution sequence before injection.
Does Xinfuda also provide a single-use dual chamber pen?
Yes. Xinfuda provides both directions. The reusable option retains the pen body and replaces the cartridge, while the single-use option integrates the medicine cartridge and device into one project-specific unit.
Can it be evaluated for lyophilized peptide or biologic projects?
Yes. It can be discussed when a compatible formulation requires separated storage and reconstitution before injection. Final compatibility and performance require project-specific testing.
Can the appearance be customized?
Color, surface finish, logo, label and packaging can be discussed according to project scope, quantity and technical feasibility.
Can customers request samples?
Yes. Share the cartridge information, reconstitution direction, target dose, project stage and sample quantity so the evaluation can be matched to the intended project.
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