ViOptix, maker of a device that measures tissue oxygen levels for various medical applications, has brought in $895,000 in equity and debt, according to a filing with the SEC. Last December, during an especially tough time for biotech companies, it successfully raised $4.4 million, closing its fourth round of financing at $16.6 million.

The Fremont, Calif. company is funded by Canadian Medical Discoveries Fund, Channel Medical Partners and Morningside Technology Ventures, BioAsia Management and Lincoln Funds International.