Device for sampling and grafting tissues comprising a handle means (2) having one end attached to a coupling means (4), a needle means (6), the free end of which has a lanceolate tip (61) and the other end is fixed to coupling means (4)； wherein - the handle means (2) has a first longitudinal through hole (23) that communicates with a longitudinal through conduit (41) inside the coupling means (4) and communicates with the needle means (6 )； - a piston means (3) slidable to the first hole (23) and having a pin means (7), having a tip (73), slidable inside the duct (41) and inside the means needle (6), said piston means (3) and the pin means (7) move between an external condition (A), in which the tip (73) protrudes from the lanceolate tip (61), and a internal condition (B), in which the tip (73) retracts inside the needle means (6)； - the piston means (3) has sealing elements (39)； - a suction means (9) communicates with the through conduit (41)； characterized in that the suction means (9) communicates with the first gap (23) and the device additionally comprises - a tip means (5) having a truncated free end (51) that is sharp, placed coaxially outside the means needle (6) and engages in a rotational-translational manner with respect to the coupling means (4) between a retracted condition (C), in which the lanceolate tip (61) protrudes from the tip means (5), and an advanced condition (D), in which the lanceolate tip (61) is completely inside the tip means (5).Dispositivo para muestrear e injertar tejidos que comprende un medio de empuñadura (2) que tiene un extremo fijado a un medio de acoplamiento (4), un medio de aguja (6), cuyo extremo libre tiene una punta lanceolada (61) y el otro extremo se fija al medio de acoplamiento (4)； en el que - el medio de empuñadura (2) tiene un primer hueco pasante longitudinal (23) que comunica con un conducto pasante longitudinal (41) en el interior del medio de acoplamiento (4) y que comunica con el medio de aguja (6)； - un medi
