Needle module and device for piercing the skin
View Patent ↗The present invention relates to a needle module, which comprises a piercing means on a mounting, which can be releasably coupled to the drive unit so that, as a result of a driving force exerted by the drive unit on the mounting, a repeated pushing movement moving the piercing means in and out is transmitted, wherein, according to the invention, the mounting has a safety device which mechanically irreversibly blocks the piercing means after the needle module has been released from the drive unit so that it can no longer be moved out of the needle module. The invention also relates to a device, in particular a hand device, for piercing the skin, comprising a drive unit and the needle module according to the invention.
1. A needle module comprising a piercing element arranged on a mounting, which can be releasably coupled to a drive unit so that, as a result of a driving force exerted by the drive unit on the mounting, a repeated pushing movement moving the piercing element in and out is transmitted, wherein the mounting has a safety device which mechanically and irreversibly blocks the piercing element after the needle module has been released from the drive unit so that it can no longer be moved out of the needle module.
2. The needle module according to claim 1 , wherein the piercing element has a needle or a needle system with two, three, or more than three needles.
3. The needle module according to claim 1 , wherein the safety device comprises a safety element and a projection, wherein the safety element is made of an elastic material.
4. The needle module according to claim 3 , wherein the projection is formed by a guide, wherein the safety element is in the form of a flexible tongue, or a barb, or a fan element, and wherein the safety element is positioned on the mounting so that when the needle module is withdrawn from the drive unit, the safety element is drawn past the projection and the projection blocks any backwards movement.
5. The needle module according to claim 3 , wherein the safety element is a spring or a ring of flexible tongues or barbs on the cover of the needle module and the projection is a bulge, collar, or O-ring on the mounting so that, when the needle module is withdrawn from the drive unit, the safety element is drawn past the projection and the projection blocks any backwards movement.
6. The needle module according to claim 1 , further comprising a locking mechanism which fixes the mounting in an initial position within the needle module until use.
7. The needle module according to claim 1 , further comprising a guide which guarantees an essentially straight, guided back-and-forth movement of the mounting with the piercing element.
8. A device for piercing the skin, comprising a drive unit and a needle module, wherein the drive unit has a motor element and a coupling element, and the needle module comprises a piercing element on a mounting, which can be releasably coupled to the drive unit so that, as a result of a driving force exerted by the drive unit on the mounting, a repeated pushing movement moving the piercing element in and out of the needle module is transmitted, wherein the mounting has a safety device which mechanically and irreversibly blocks the piercing element after the needle module has been released from the drive unit so that it can no longer be moved out of the needle module.
9. The device according to claim 8 , wherein the drive unit has a coupling element.
10. The device according to claim 9 , further comprising corresponding parts of a releasable connection element formed on the coupling element and the mounting for the coupling of drive unit and needle module.
11. The device according to claim 10 , wherein the corresponding parts of the releasable connection element are selected from the group consisting of a ball and a socket, a magnet and a ferromagnetic material, and hook and loop components.
12. A needle module comprising a piercing element on a mounting, which is releasably coupled to a drive unit so that, as a result of a driving force exerted by the drive unit on the mounting, a repeated pushing movement moving the piercing element in and out of the needle module is transmitted, wherein the mounting comprises a guide with an integrated locking mechanism, wherein the guide together with an outlet opening for the piercing element in a cover of the needle module guarantees an essentially straight, guided back-and-forth movement of the mounting with the piercing element and the locking mechanism fixes the mounting in an initial position within the needle module until use, wherein the piercing element projects from the needle module and is covered with a protective cap before use.
13. The needle module according to claim 12 , wherein the mounting has a radial play and, when the needle module is released from the drive unit, the piercing element is drawn into the inside of the cover of the needle module so that it cannot move back out through the outlet opening owing to the radial play of the mounting.
14. The needle module according to claim 12 , wherein the mounting, is forced out of a centered position after the needle module has been released from the drive unit due to an elastic element or a non-centered bearing so that the mounting cannot move back out through the outlet opening.
15. The needle module according to claim 12 , wherein a cone with its tip pointing towards the drive unit is formed on the tip of the cover of the needle module.
16. The needle module according to claim 14 , wherein the cover of the needle module consists of a base module and a top module.
17. The needle module according to claim 4 , wherein the needle module has a locking mechanism which fixes the mounting in an initial position within the needle module until use.
18. The needle module according to claim 5 , wherein the needle module has a locking mechanism which fixes the mounting in an initial position within the needle module until use.
19. The needle module according to claim 4 , wherein the needle module comprises a guide which guarantees an essentially straight, guided back-and-forth movement of the mounting with the piercing element.
20. The needle module according to claim 5 , wherein the needle module comprises a guide which guarantees an essentially straight, guided back-and-forth movement of the mounting with the piercing element.
21. The needle module according to claim 6 , further comprising a guide which guarantees an essentially straight, guided back-and-forth movement of the mounting with the piercing element.
22. The needle module according to claim 14 , wherein a cone with its tip pointing towards the drive unit is formed on the tip of the cover of the needle module.
23. The needle module according to claim 15 , wherein the cover of the needle module consists of a base module and a top module.
24. The device according to claim 9 , wherein the coupling element is a push rod.
25. The device according to claim 24 , further comprising corresponding parts of a releasable connection element formed on the coupling element and the mounting for the coupling of drive unit and needle module.
26. The device according to claim 25 , wherein the corresponding parts of the releasable connection element are selected from the group consisting of a ball and a socket, a magnet and a ferromagnetic material, and hook and loop components.
27. The device according to claim 8 , wherein the device is a hand device.
28. The device according to claim 26 , wherein the device is a hand device.