Robotisable module for driving an elongated flexible medical member, comprising: - a base, - a first drive member defining a first axis, and comprising a first peripheral drive surface around this first axis, the first drive member being mounted mobile in rotation relative to the base about the first axis, and comprising a member for linking to a drive motor adapted to drive the first drive member in rotation about the first axis, - a second drive member defining a second axis parallel to the first axis, and comprising a second peripheral drive surface around this second axis, the second drive member being mounted mobile in rotation relative to the base about the second axis, the second drive member also being mounted so as to be mobile relative to the first drive member according to a degree of freedom other than rotational about the second axis, between: - a first configuration in which the first and second peripheral drive surfaces (30a, 30b) face each other with a first spacing, and - a second configuration in which the first and second peripheral drive surfaces (30a, 30b) face each other with a second spacing greater than the first spacing, - an actuation system actuatable by a user, adapted to make the second drive member go at least from one of the first and second configurations to the other of the first and second configurations, characterised by a motion transmission system for transmitting the drive movement generated by the drive motor to the second drive member to drive the second drive member in rotation about the second axis at least in any configuration between the first and second configurations and comprising an elastic system stressing the second drive member from its second configuration towards its first configuration, and wherein the actuation system is actuatable to make the second drive member go from the first configuration to the second configuration while compressing said elastic system. - a base, - a first drive member defining a first axis, and comprising a first peripheral drive surface around this first axis, the first drive member being mounted mobile in rotation relative to the base about the first axis, and comprising a member for linking to a drive motor adapted to drive the first drive member in rotation about the first axis, - a second drive member defining a second axis parallel to the first axis, and comprising a second peripheral drive surface around this second axis, the second drive member being mounted mobile in rotation relative to the base about the second axis, - a first configuration in which the first and second peripheral drive surfaces (30a, 30b) face each other with a first spacing, and - a second configuration in which the first and second peripheral drive surfaces (30a, 30b) face each other with a second spacing greater than the first spacing, - an actuation system actuatable by a user, adapted to make the second drive member go at least from one of the first and second configurations to the other of the first and second configurations, characterised by a motion transmission system for transmitting the drive movement generated by the drive motor to the second drive member to drive the second drive member in rotation about the second axis at least in any configuration between the first and second configurations and comprising an elastic system stressing the second drive member from its second configuration towards its first configuration, and wherein the actuation system is actuatable to make the second drive member go from the first configuration to the second configuration while compressing said elastic system.