An apparatus for use in tissue removal from a body organ is presented. The apparatus comprises a hand-held probe device, a rotating motor device and a connection assembly configured for removably interconnecting between the hand-held probe device and the rotating motor device. The hand-held probe device is disposable and comprises a housing having proximal and distal ends, a rotatable cutting tool extending distally from the distal end of the housing and being configured for cutting and removing tissue during rotation, and a transmission assembly passing inside the housing between the proximal and distal ends and being configured for transmitting rotational power to the rotatable cutting tool. The connection assembly is configured for engaging between the rotating motor device and the transmission assembly to thereby controllably rotate the cutting tool and remove tissue. In some embodiments, the apparatus includes a control unit for controlling operation of the apparatus, the control unit comprises an activation mechanism for activating the rotatable cutting tool, and a controller configured for operating the activation mechanism to generate a single fixed activation signal of a known intensity and duration during a predetermined time interval, thereby restricting operation of the cutting tool during the time interval to the single activation signal only.L'invention porte sur un appareil utilisé pour l'ablation de tissu d'un organe du corps. L'appareil comprend un dispositif de sonde portatif, un dispositif de moteur rotatif, et un ensemble de connexion conçu pour connecter, de manière amovible, le dispositif de sonde portatif et le dispositif de moteur rotatif. Le dispositif de sonde portatif est jetable, et comprend un boîtier ayant une extrémité proximale et une extrémité distale. L'outil de coupe rotatif, s'étendant de manière distale à partir de l'extrémité distale du boîtier, est conçu pour couper et retirer le tissu pendant la rotation. Un ensemble de transm
