Rock West Medical Devices said in a regulatory filing that it raised $1.25 million from a single, unnamed investor.

San Juan Capistrano, Calif.-based Rock West Medical is a subsidiary of Rock West Solutions, which according to its website provides R&D and product development services for advanced composite structures and applied sensors. The company ultimately hopes to raise $3 million from the equity round, according to the filing.

Rock West Medical plans to use the proceeds to back prototype development, pre-clinical and clinical trials and a 510(k) bid for the MoPill, a smart pill designed to measure gastrointestinal motility, according to AdvaMed’s Medtech Innovator.