EnteroMedics Inc. started an underwritten public offering expected to consist of units comprised of 1 series B convertible preferred share and 1 warrant to purchase common shares.

The St. Paul, Minn.-based medical device company plans to use net proceeds to continue its commercialization efforts, for clinical and product development activities and for other working capital and general corporate purposes.

Ladenburg Thalmann & Co. Inc., a unit of Ladenburg Thalmann Financial Services Inc., is acting as sole book-running manager for the offering.