A biopsy device for collecting at least one tissue sample from a mass of suspicious tissue in a body of a living being, comprising: - a hollow needle (50) with a distal end portion adapted to be introduced into the body, the hollow needle comprising a circumferential cutting edge at its distal end； - a sample reception device (52) with a cavity (56) to receive the at least sample of cut tissue, the sample reception device (52) that can be received in the hollow needle (50) and move therein ； - a first user-operated firing mechanism (110) to cause the hollow needle (50) and the sample receiving device (52) to be displaced longitudinally in a distal direction, to penetrate the body tissue in or near of the mass of suspicious tissue； - a second user-operated trigger mechanism (112) to cause the hollow needle (50) to be displaced longitudinally in a distal direction from a first position, in which the sample receiving device (52) protrudes from the distal end of the hollow needle (50), to a second position, in which the hollow needle (50) essentially accommodates the cavity (56) of the sample receiving device (52), to cut said tissue sample from the tissue of the remaining body at the collection site, the first and second firing mechanism comprising respective energy storage and release mechanisms, characterized by a transport device (66) for moving the sample receiving device (52) in the hollow needle (50) between a first extended position, in which a distal end of the cavity of the sample receiving device (52) projects from the part of the distal end of the ag hollow needle (50), and a second retracted position, which is proximal with respect to the first position.Un dispositivo de biopsia para recolectar al menos una muestra de tejido desde una masa de tejido sospechoso en un cuerpo de un ser vivo, que comprende: - una aguja hueca (50) con una parte de extremo distal adaptada para ser introducida dentro del cuerpo, la aguja hueca que comprende un borde de corte en ci
