Medical device companies pulled in more than $255 million from investors in 29 deals during January, according to data provided to MassDevice.com by CB Insights Inc.

The deals ranged widely in size, from a $25,000 seed round investment for Elyira, Ohio-based Guided Interventions and its passive coronary artery blockage sensing technology to a $43 million Series D round for EndoChoice and its endoscopes.