Device for Treating a Surface with a Plasma

• US 20160242269A1
• Filed: 11/07/2014
• Published: 08/18/2016
• Est. Priority Date: 11/15/2013
• Status: Active Grant

• Current Assignee: CINOGY GmbH
• Original Assignee: CINOGY GmbH
• Inventors: Dirk, Wandke, Trutwig, Leonhard, Hahnl, Mirko, Storck, Karl-Otto
• Granted Patent: US 9,756,712 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61L 2/14 Plasma, i.e. ionised gases
• CPC Class Codes: H05H 1/2406 using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
• CPC Class Codes: H05H 2245/36 Sterilisation of objects, liquids, volumes or surfaces
• CPC Class Codes: H05H 2277/10 Medical devices

Abstract

A device for treating a surface with a dielectric barrier plasma, wherein the surface functions as a return electrode, having a housing (1), in which a high-voltage feed line, an electrode (8) which is connected to the high-voltage feed line, and a dielectric (9), which screens the electrode (8) with respect to the surface, are located, permits the plasma treatment of highly curved surfaces and of relatively large surface areas by virtue of the fact that the electrode (8) has the shape of a circle which is mounted in the housing (1) so as to be rotatable at least to a limited degree, and projects with a spherical section from an end-side opening (5) in the housing (1), and in that the electrode (8) is coated with the dielectric (9) in such a way that its spherical section projecting out of the housing (1) is covered by the dielectric (9) in every possible rotational position.

Claims

1. A device for treating a surface with a dielectric barrier plasma, wherein the surface functions as counter electrode, comprising:

a housing, in which a high-voltage supply an electrode connected to the high-voltage supply, and a dielectric which screens the electrode with respect to the surface are located, wherein

the electrode has a shape of a sphere which is rotatably mounted at least to a limited extent in the housing and protrudes via a spherical portion from an end-face opening in the housing, and

the electrode is connected to the dielectric such that the spherical portion of said electrode protruding from the housing is covered by the dielectric in every possible rotational position of the electrode.

2. The device as claimed in claim 1, wherein the dielectric has a structured surface.

3. The device as claimed in claim 2, wherein the structured surface has protruding nubs.

4. The device as claimed in claim 1 wherein the device is composed of a head part and a handle part, and wherein the head part comprises a connecting pin connecting to the electrode, wherein the connecting pin projects into a complementary guide channel in the handle part in the assembled state and is connectable there to a high-voltage supply.

5. The device as claimed in claim 4, wherein the guide channel is closed by a transverse slide under spring effect, and wherein the transverse slide has a through-opening, which is alignable with the guide channel by means of an actuation button, against the restoring force of the spring effect.