Medical device maker DFine brought in $35 million in fourth round funding to develop and market its StabiliT Vertebral Augmentation System, a device that injects bone cement to heal fissures in patients' spinal columns.

The original target amount for the round, $30 million, was reached in October. Investors include BB&T Fund, Highland Credit Strategies Fund, Prospect Venture Partners and Vanguard Ventures. The San Jose, Calif. company raised $18 million in previous investment rounds.