A blood collection device comprising a housing (10) having an open rear end adapted to accommodate a vacuum blood collection tube, and a front end, a needle holder (11) at the front end, a needle (12) that is fixed to the needle holder (11) and that is double pointed and has a first outer end that protrudes from the housing (10) and a second inner end that protrudes into the interior of the housing, in which the Needle holder (11) is fixed, releasably, relative to the housing (10) to allow the needle holder (11) and the fixed needle (12) to be retracted, characterized in that the needle holder (11) ) contains at least one finger element that engages in relation to the housing (10) to retain the needle holder (11) to the housing (10), in which the finger element is movable between a locked position, in the that the finger element retains the needle holder (11) to the housing (10), and a release position, in which the po Needle rta (11) is retractable inside the housing (11).Un dispositivo de recogida de sangre que comprende una carcasa (10) que tiene un extremo posterior abierto adaptado para alojar un tubo de recogida de sangre con vacío, y un extremo frontal, un porta-agujas (11) en el extremo frontal, una aguja (12) que está fijada al porta-agujas (11) y que es de doble punta y tiene un primer extremo exterior que sobresale desde la carcasa (10) y un segundo extremo interior que sobresale al interior de la carcasa, en el que el porta-agujas (11) está fijado, de manera liberable, con relación a la carcasa (10) para permitir que el porta-agujas (11) y la aguja (12) fijada sean retraídos, caracterizado por que el porta-agujas (11) contiene al menos un elemento dedo que se acopla con relación a la carcasa (10) para retener el porta-agujas (11) a la carcasa (10), en el que el elemento dedo es móvil entre una posición de bloqueo, en la que el elemento dedo retiene el porta-agujas (11) a la carcasa (10), y una posición de liberación, en la que el porta-agujas (11) es ret