The WuXi PharmaTech-backed infusion pump developer has raised the first $10m of a three-tranche round expected to close at $50m.

US-based drug delivery device developer Ivenix has raised $10m in a round featuring medical product group WuXi PharmaTech that it aims to close at $50m.

The tranche was co-led by two unnamed new investors, and the participants included WuXi PharmaTech’s corporate venturing unit, WuXi Healthcare Ventures, and F-Prime Capital Partners, a subsidiary of financial services group Fidelity Investments.

The funding was provided by 18 investors and represents the first tranche of an expected three, according to a regulatory filing, which states the…