Hand-holdable tattoo device

1. A hand-holdable device for tapping into skin, the hand-holdable device comprising:

a handle piece including a drive;

a needle module releasably secured on the handle piece with a needle that can be moved back and forth by the drive; and

a protective sleeve which is configured to fully isolate the needle module from the handle piece,

wherein:

the needle is connected with the drive by form-closure and/or magnetic coupling with coupling elements;

the protective sleeve is releasably retained between the coupling elements;

the needle module includes a front end with an aperture for the needle and a back end via which the needle module is releasably connected with the handle piece;

the handle piece includes an extension via which a position of the back end of the needle module is fixed in position on the handle piece;

one of the coupling elements is on a drive-side;

an end of the one of the coupling elements faces the needle module and is configured to align with a front end of the extension; and

the protective sleeve extends at least partially over the handle piece.

2. The hand-holdable device of claim 1 , wherein the needle module is connected with the handle piece across a snap-on connection at or adjacent to the extension.

3. The hand-holdable device of claim 1 , wherein the needle module is connected with the handle piece across a magnet connection at or adjacent to the extension.

4. The hand-holdable device of claim 1 , wherein the needle module is in contact with the extension.

5. The hand-holdable device of claim 4 , wherein:

an outwardly projecting protrusion is disposed on the extension; and

the outwardly projecting protrusion is configured to engage at least one latching finger on the back end of the needle module.

6. The hand-holdable device of claim 5 , wherein the outwardly projecting protrusion is an annular flange.

7. The hand-holdable device of claim 1 , wherein the protective sleeve extends up to a back end of the handle piece and is closed such that the protective sleeve is configured to gaplessly enclose the handle piece.

8. The hand-holdable device of claim 1 , wherein:

the one of the coupling elements is a first of the coupling elements;

the needle is disposed on a first end of a retainer;

a second of the coupling elements is disposed on a second end of the retainer; and

the first end of retainer is opposite to the second end of the retainer in a longitudinal direction of the retainer.

9. The hand-holdable device of claim 8 , wherein:

a snap-on element is disposed on the retainer; and

in a retracted position of the needle, the snap-on element is releasably retained on a mating surface of the needle module.

10. The hand-holdable device of claim 9 , wherein the snap-on element is a projection.

11. The hand-holdable device of claim 1 , wherein:

the drive includes a driving rod that is oriented coaxially with the needle and configured to move translationally; and

the one of the coupling elements is disposed on the driving rod.

12. The hand-holdable device of claim 11 , wherein a rotational axis of a drive motor of the drive is oriented at a right angle with respect to a longitudinal axis of the driving rod.

13. The hand-holdable device of claim 11 , wherein:

the driving rod includes an elongated hole oriented transversely to a longitudinal axis of the driving rod;

the elongated hole is disposed at an end of the driving rod opposite to the one of the coupling elements; and

the elongated hole is configured to receive a drive journal connected with a motor shaft.

14. The hand-holdable device of claim 13 , wherein the elongated hole is configured to receive the drive journal with a roller supported on the drive journal.

15. The hand-holdable device of claim 1 , wherein the hand-holdable device is configured to be battery operated or accumulator operated.

16. The hand-holdable device of claim 1 , wherein the extension is disposed on a setting ring that is mounted on the handle piece so as to be adjustable in a longitudinal direction of the needle.

17. The hand-holdable device of claim 16 , wherein the setting ring is mounted on the handle piece via a threading.