Manipulation device for a medical instrument

1. A manipulation device for mechanical connection with a proximal end of a shaft, for forming a medical instrument, the manipulation device comprising:

a plurality of retaining devices, wherein each one of the plurality of retaining devices is configured to releasably retain a proximal end of a shaft or a proximal end of a transmission device to transmit at least one of a force and a torque in the shaft;

a manually activatable actuation device; and

a coupling device configured to mechanically couple the actuation device to the plurality of retaining devices, in such a way that a manual activation of the actuation device causes a release of the plurality of retaining devices

wherein a movable retaining device of the plurality of retaining devices is movable relative to the actuation device;

wherein the coupling device is configured to couple the actuation device to the movable retaining device, independently of a position of the movable retaining device relative to the actuation device; and

wherein the movable retaining device is movable relative to the actuation device in a direction parallel to a longitudinal axis of the shaft or of the transmission device.

2. The manipulation device according to claim 1 , wherein a first retaining device of the plurality of retaining devices is configured to retain a proximal end of a shaft; and

wherein a second retaining device of the plurality of retaining devices is configured to retain a proximal end of a transmission device for transmitting at least either a force or a torque between the manipulation device and a tool at a distal end of the shaft.

3. The manipulation device according to claim 1 , wherein the movable retaining device is rotatable relative to the actuation device about the longitudinal axis of the shaft or of the transmission device.

4. The manipulation device according to claim 1 , wherein the actuation device is manually displaceable in a direction parallel to the longitudinal axis of the shaft, which is connected to the manipulation device.

5. The manipulation device according to claim 1 , wherein the coupling device includes:

a coupling element, which is displaceable in a first direction of movement; and

a slide surface with an area that is not parallel to the first direction of movement, in order to convert a displacement of the coupling element in the first direction of movement into a movement of a bolt in a second direction of movement, which is different than the first direction of movement.

6. The manipulation device according to claim 5 , wherein the bolt bears on the slide surface.

7. The manipulation device according to claim 5 , further comprising:

a further coupling element, which bears on the coupling element and is movable in the second direction of movement, wherein the bolt is mechanically coupled to the further coupling element.

8. The manipulation device according to claim 7 , wherein either the further coupling element has the slide surface, or the slide surface bears slidingly on the further coupling element.

9. The manipulation device according to claim 7 , wherein the further coupling element has a support surface, which is parallel to the longitudinal axis of a proximal end of a shaft or a transmission device retained by the movable retaining device, and on which a bolt of the movable retaining device bears.

10. The manipulation device according to claim 5 , wherein the second direction of movement is at least either perpendicular to the first direction of movement or perpendicular to the longitudinal axis of a shaft connected to the manipulation device.

11. A manipulation device for mechanical connection with a proximal end of a shaft, for forming a medical instrument, the manipulation device comprising:

a retaining device configured to releasably retain a proximal end of a shaft or a proximal end of a transmission device to transmit at least one of a force and a torque in the shaft;

a manually activatable actuation device; and

a coupling device configured to mechanically couple the actuation device to the retaining device, in such a way that a manual activation of the actuation device causes a release of the retaining device;

wherein the retaining device is movable relative to the actuation device;

wherein the coupling device is configured to couple the actuation device to the retaining device, independently of a position of the retaining device relative to the actuation device; and

wherein the retaining device is movable relative to the actuation device in a direction parallel to a longitudinal axis of the shaft or of the transmission device.

12. A medical instrument, comprising:

a manipulation device for mechanical connection with a proximal end of a shaft, for forming a medical instrument, the manipulation device including:

a plurality of retaining devices, wherein each one of the plurality of retaining devices is configured to releasably retain a proximal end of a shaft or a proximal end of a transmission device to transmit at least one of a force and a torque in the shaft;

a manually activatable actuation device; and

a coupling device configured to mechanically couple the actuation device to the plurality of retaining devices, in such a way that a manual activation of the actuation device causes a release of the plurality of retaining devices

wherein a movable retaining device of the plurality of retaining devices is movable relative to the actuation device;

wherein the coupling device is configured to couple the actuation device to the movable retaining device, independently of a position of the movable retaining device relative to the actuation device; and

wherein the movable retaining device is movable relative to the actuation device in a direction parallel to a longitudinal axis of the shaft or of the transmission device.