Single Pass is the only patented, disposable, electrocautery device that can cauterize deep tissue through a guide needle. The Single Pass electro-cautery device effectively seals the biopsy channel by cauterizing the tissue to prevent bleeding. It also improves the safety of biopsy procedures for at-risk patients and allows for the use of larger guide needles to collect bigger tissue samples with a fewer number of needle passes. Safe. Fast. Effective.