DE102023104707B3 - Plasma treatment arrangement - Google Patents

Abstract

The invention relates to a plasma treatment arrangement (10) for dielectrically impeded plasma treatment of a body surface (12) of a body, with an electrode arrangement (14) which has a contact side (V ₁₄ ) facing the body surface (12), at least one electrode (16) and a dielectric (18) which covers the at least one electrode (16), and at least one sensor (38) which is designed to detect at least one parameter (Pi) of the body surface, wherein the dielectric (18) has at least two dielectric through-openings (40), each of which forms a channel through which wound secretion can be discharged, wherein the at least one sensor (38) is arranged in the dielectric through-opening (40).

Description

The invention relates to a plasma treatment arrangement for dielectrically impeded plasma treatment of a body surface of a body, with (a) an electrode arrangement which has (i) a contact side facing the body surface, (ii) at least one electrode and (iii) a dielectric which covers the at least one electrode, in particular completely, and (b) at least one sensor which is designed to detect at least one parameter of the body surface, wherein (c) the dielectric has at least two dielectric through-openings which each form a channel through which wound secretion can be discharged.

According to a second aspect, the invention relates to a method for producing a plasma treatment arrangement with the steps of (a) providing an electrode arrangement which has (i) a contact side facing the body surface, (ii) at least one electrode and (iii) a dielectric which covers the at least one electrode, in particular completely, and (b) providing at least one sensor which is designed to detect at least one parameter of the body surface, wherein (c) the electrode arrangement is produced such that the dielectric has at least two dielectric through-openings, each of which forms a channel through which wound secretion can be discharged.

It is known to treat the surface of a human or animal body with a plasma. In this process, a dielectrically impeded plasma discharge is generated, usually under atmospheric pressure, by applying an alternating high voltage to an electrode embedded in a dielectric and thus shielded from the surface to be treated. Such a treatment device is known, for example, from DE 103 24 926 B3 known. It can be provided that the body with the surface to be treated forms the ground electrode. Plasma treatment promotes wound healing and is particularly used to disinfect the body surface.

A plasma treatment device is from the EN 10 2016 118 569 A1 known, in which the electrode arrangement for forming a dielectrically impeded plasma discharge has at least two partial electrodes arranged next to one another and insulated from one another by the dielectric. The partial electrodes are fed by means of a control device with partial alternating high voltages that are opposite in terms of waveform and voltage level and compensate for one another, whereby here too the surface to be treated serves as the ground electrode.

From the DE10 2016 108 450 A1 An electrode arrangement is known in which the dielectric and the electrode are formed from a flexible plastic material, wherein the electrode is provided with electrically conductive additives.

In order to drain wound secretion, blood and/or gases from the wound surface or to supply a fluid when such an electrode arrangement is resting on a wound surface, it is necessary EN 10 2014 013 716 A1 It is known that the dielectric has through-openings that extend from the front to a back of the dielectric and are aligned with openings in the electrode embedded therein. The through-openings of the dielectric have smaller dimensions than the openings of the electrode, so that the dielectric completely covers the electrode even in the area of the through-openings.

From the EN 10 2017 106 570 A1 An electrode arrangement for a dielectrically impeded plasma discharge for treating a body region of a living being is known, in which at least one sensor is embedded in the dielectric and is supplied with an electrical voltage in order to determine at least one parameter of the body region. This allows the plasma treatment of the body region to be monitored and, if necessary, controlled.

A generic plasma treatment arrangement is known from EN 10 2017 106 482 A1 This uses a negative pressure between the plasma treatment arrangement and the surface to be treated.

From the EP 3 630 279 B1 A generic plasma treatment arrangement is known in which the length of the support arrangement can be adapted to the respective individual case by designing one or more sections of the support arrangement so as to be separable.

The present invention is based on the object of providing an improved electrode arrangement with a control of the plasma treatment of the body area.

The invention solves the problem by a generic plasma treatment arrangement in which the at least one sensor is arranged in the dielectric through-opening, in particular movable relative to the dielectric.

According to a second aspect, the invention solves the problem by a generic method in which the at least one sensor is connected to the electrode arrangement by introducing the sensor into the dielectric via.

According to the invention, there is also provided a plasma treatment system with (a) a plasma treatment arrangement according to the invention, (b) an alternating high-voltage generator which is electrically connected to the electrode, (c) a voltage source which is connected to the at least one sensor for supplying the sensor with electrical energy, and (d) a control device which is set up for automatically (i) detecting measured values of the at least one sensor and (ii) controlling the alternating high-voltage generator depending on the detected measured values.

The advantage of the invention is that the electrode arrangement and the at least one sensor can be manufactured separately from one another. According to a preferred embodiment, at least one sensor can be connected to the electrode arrangement before the start of treatment. In this way, exactly the sensor arrangement that is best suited to the respective therapy task can be used.

In the context of the present description, the feature that the at least one sensor is arranged in the dielectric through-opening is understood in particular to mean that the sensor has been introduced into the existing dielectric through-opening. For example, the sensor is arranged in the dielectric through-opening in a form-fitting or friction-fitting manner. A material connection, for example by gluing, is also possible.

The body is understood to be an inanimate or animate body, in particular a human or animal body. For example, the body surface is a wound or has an illness that can be treated using plasma treatment. Cosmetic or prophylactic treatment of the body surface is also possible.

The inanimate body can be, for example, an object with a wooden, plastic or metal surface. Plasma treatment of such a surface improves, for example, the applicability and/or adhesion of coatings such as paints, varnishes or adhesives. A method according to the invention relates to such an application.

The body preferably serves as a ground electrode.

The electrode arrangement is understood to mean the entirety of the electrode and the dielectric. The electrode arrangement could also be called an electrode unit. The electrode arrangement is preferably designed to form gas spaces between the dielectric and the body surface in which a plasma forms when the electrode is subjected to a suitable alternating high voltage.

The at least one sensor is preferably designed to detect two, three, four or more parameters of the body surface. The parameters are intrinsic properties of the body surface, for example the temperature, the oxygen content, the oxygen saturation, the pH value, or the absorption coefficient at a predetermined wavelength.

The sensors are preferably electrically insulated from the electrode.

Preferably, the sensor arrangement is designed to be detachably connected to the electrode arrangement. In particular, the sensor is detachably connected to the dielectric, preferably in a form-fitting manner. In this way, it is possible to separate the sensor from the electrode arrangement and, for example, to connect at least one other sensor arrangement to the electrode arrangement. If the electrode arrangement and the sensor are detachably connected to one another, they can also be detachably connected to one another.

According to the invention, there is also a kit which has (a) an electrode arrangement which has (i) a contact side facing the body surface, (ii) at least one electrode and (iii) a dielectric which completely covers the at least one electrode at least towards the contact side, and (b) at least one sensor which is designed to detect at least one parameter of the body surface, wherein the electrode arrangement and the sensor (i) are separate objects and (ii) are designed to be connected to one another. Preferably, the electrode arrangement and the at least one sensor are designed to be connected to one another in a form-fitting and/or friction-fitting manner. Alternatively or additionally, the kit comprises adhesive for connecting the electrode arrangement and the sensor. The adhesive can already be applied to the sensor arrangement and/or the electrode arrangement. In this case, the adhesive can be covered by means of a removable film. By peeling off the film, a sticky surface is exposed by means of which the connection between the electrode arrangement and the sensor is established. The electrode arrangement and the sensor preferably have properties which are described in this description for other embodiments of the invention. Preferably, the kit comprises a plurality of sensors designed to measure under different parameters of the body surface.

Preferably, the body surface of the body acts as a counter electrode to the electrode.

In one embodiment, the at least one sensor is arranged in the dielectric through-opening in a form-fitting or friction-fitting manner. For example, the at least one sensor forms a snug fit with the dielectric through-opening. The sensor is thus connected to the electrode arrangement sufficiently firmly and yet detachably.

Preferably, the at least one sensor has at least one electrical connecting line. In one embodiment, the electrode arrangement has at least one recess, in particular a groove or a slot, which is designed to receive the connecting line. In particular, a cross-section of the recess is selected such that the connecting lines can be completely received in the recess. In one embodiment, the electrode arrangement has holding elements for holding the connecting line in the recess. Such holding elements can be projections or noses, for example. It is then possible to insert the connecting line reversibly, in particular in a form-fitting manner, into the recess. In this way, the sensor can be connected to the electrode arrangement particularly easily.

According to a preferred embodiment, the electrode arrangement has at least one connecting line, preferably two connecting lines insulated from one another, for the at least one sensor. The at least one connecting line is preferably arranged in such a way that the sensor is contacted when it is arranged in the dielectric through-opening. For this purpose, the at least one sensor preferably has two contact surfaces that can be contacted from the outside, one of which forms an electrical contact with a connecting line when the sensor is arranged in the dielectric through-opening.

The connecting line can be formed by or comprise a metal wire or a metallization. Metallization is understood to be an area of metal that would be mechanically too unstable to be suitable for contacting without the substrate to which the metal is applied.

Alternatively or additionally, the connecting cable can be formed by an electrically conductive area in or on the dielectric. For example, the electrically conductive area is formed by electrically conductive plastic, in particular an electrically conductive elastomer, for example an electrically conductive silicone. This means that the connected power is particularly well protected against destruction by external influences.

Preferably, the at least one electrode has an electrode through-opening. The dielectric preferably completely covers the at least one electrode, even in the region of the at least one electrode through-opening. In one embodiment, the at least one sensor is arranged in the at least one electrode through-opening. The electrode can be flat. In this case, a large area can be treated homogeneously with plasma. The sensor can run through the electrode through-openings through the area along which the electrode extends.

Preferably, the dielectric has a plurality of dielectric through-openings, at least several of which do not contain a sensor.

In one embodiment, at least a majority, preferably at least three quarters, particularly preferably at least four fifths, most preferably all, of the dielectric through-openings have the same inner contour.

Preferably, the number of channels is at least three times, in particular five times, for example eight to ten times the number of sensors. In this way, a sufficient number of channels are available for draining wound secretion and/or supplying paste or liquid. Preferably, the number of channels is at most 300 times the number of sensors.

The dielectric can have dielectric projections, in particular webs, which have a contact surface for contact with the body surface. Preferably, at least one of the sensors runs through the dielectric projections. In this case, the sensors can come into direct contact with the body surface.

According to a preferred embodiment, the webs are designed in a grid-like manner. This is understood in particular to mean that the contact surface has a surface area that is at most one third, preferably one quarter, particularly preferably at most one fifth, of the total area of the contact surface and the areas of the body surface surrounded by the webs.

Preferably, gas spaces are formed between the dielectric projections, in which a plasma is formed when a sufficiently high alternating voltage is applied to the at least one electrode. Preferably, at least a dielectric through-opening into the gas space. In one embodiment, a sensor is arranged in this at least one dielectric through-opening opening into the gas space.

Preferably, at least one sensor has a sensor projection that engages in a through-opening recess in the dielectric through-opening in which the sensor is arranged. This forms a positive connection. Alternatively or additionally, the sensor has a sensor recess in which a through-opening projection of the dielectric through-opening in which the sensor is arranged engages.

Preferably, at least one sensor has an oversize in relation to the corresponding dielectric through-hole in which it is arranged. In this way, a snug fit and a frictional connection are achieved.

Preferably, at least one of the sensors is designed to measure oxygen saturation of the body surface as a parameter to be recorded. For example, this sensor is a near-infrared absorption sensor.

Alternatively or additionally, one of the sensors is preferably designed to measure a local temperature of the body surface as a parameter to be recorded. For example, it is a thermometer that is in contact with the body surface when the plasma treatment arrangement rests on the skin. In this way, the temperature of the skin can be determined at a location that is not influenced by the plasma. If the temperature of the skin increases, this can indicate inflammation.

Preferably, at least one sensor of the sensor arrangement is designed to measure a color value of the body surface as a parameter to be recorded. If the color value changes in such a way that the red component increases, this can indicate increased blood flow and thus inflammation. The preferably following control device can then be designed to automatically start a plasma treatment.

Preferably, at least one sensor is designed to measure the pH value of the body surface as a parameter to be recorded. If the pH value rises above a predetermined target pH value, which is for example greater than 5.6, in particular greater than 5.8, for example greater than 6.0, the risk of infection can increase. The control device can be designed to automatically start a plasma treatment.

Preferably, the at least one electrode and the at least one dielectric are flexible. In one embodiment, the electrode is embedded in the dielectric.

Preferably, the plasma treatment arrangement is connected to an alternating high-voltage generator that is electrically connected to the electrode and to a voltage source that is connected to the at least one sensor for supplying the sensor with electrical energy. The entirety of the plasma treatment arrangement, alternating high-voltage generator and voltage source can be referred to as a plasma treatment system. The plasma treatment system preferably comprises a control device that is set up to automatically (i) record measured values of the at least one sensor and (ii) control the alternating high-voltage generator depending on the recorded measured values.

Preferably, the AC high-voltage generator, the voltage source and the control device are part of an operating unit, which preferably has a housing. The housing preferably surrounds the AC high-voltage generator, the voltage source and the control device.

In one embodiment, the plasma treatment system has a contacting unit by means of which an electrical contact can be made between the control device and the connecting lines of the sensors when the plasma treatment arrangement is mechanically connected to the operating unit. The contacting unit is preferably designed to contact the electrode, in particular by contacting the at least one electrode contact.

In one embodiment, the connecting lines and/or the electrode contact are exposed in the area in which they are contacted by the contacting unit. This is understood in particular to mean that they can be contacted by moving a contact pin in the normal direction to the front.

Alternatively or additionally, the connecting lines can be exposed in recesses in the base body and/or the electrode contacts in recesses in the dielectric. In this way, the plasma treatment arrangement contains a female plug contact which is contacted by means of a male plug contact formed on the operating unit.

For example, the control device is designed to automatically start a plasma treatment when the measured value of at least one Sensor is outside a predetermined target measurement value interval. In particular, the control device is set up to end the plasma treatment after a predetermined treatment time. A treatment program can be stored in the control device according to which the electrode is subjected to alternating high voltage. In particular, the treatment program contains the amplitude of the alternating high voltage and its duration.

Preferably, the control unit is designed to, in particular regularly, (i) record measured values while the electrode is not subjected to alternating high voltage, and (ii) if the measured values are outside the target measured value interval, control the alternating high voltage generator so that the electrode is subjected to alternating high voltage.

The voltage of the alternating high voltage is preferably between 1 kV and 100 kV. The frequency of the alternating voltage is preferably between 100 Hz and 100 MHz. The pulse frequency, i.e. the frequency at which the individual pulses are emitted after action, is preferably more than 90 Hz and at most 1 kHz.

According to a preferred embodiment, the electrode comprises at least two partial electrodes which are insulated from one another. The control device is preferably designed to apply a first alternating high voltage to the first partial electrode and a second alternating high voltage to the second partial electrode, wherein the first alternating high voltage and the second alternating high voltage compensate one another. In particular, the first alternating high voltage corresponds to the negative of the first alternating high voltage.

The plasma treatment arrangement preferably has a fastening for fastening the electrode arrangement and the sensor arrangement to one of the body surfaces and/or to the body. The fastening can be designed for a material-locking connection. For example, the fastening can comprise an adhesive. Alternatively or additionally, the fastening can be designed for a form-fitting fastening. For example, the fastening comprises a fastening element, for example a strap and/or a Velcro fastener.

The plasma treatment arrangement preferably has a flat sensor arrangement which has (i) a flat base body and (ii) the at least one sensor which is firmly connected to the base body and (iii) is separate from the electrode arrangement. The feature that the sensor arrangement is separate from the electrode arrangement is understood in particular to mean that they were manufactured separately and connected to one another to form a unit which can be handled together, so that there is a joint between the two. The joint can be formed by an adhesive, for example. Alternatively, the electrode arrangement and the sensor arrangement are non-destructively, in particular reversibly, separably connected to one another. It is then possible to separate the electrode arrangement and the sensor arrangement from one another after use in order to dispose of them separately. In addition, different sensor arrangements can be used for the same electrode arrangement. This sensor arrangement can preferably be detachably connected to the electrode arrangement, in particular to the dielectric.

• 1 eine Ansicht von oben auf eine erste Ausführungsform einer erfindungsgemäßen Plasmabehandlungsanordnung,
• 2 in 2a eine Seitenansicht der Plasmabehandlungsanordnung gemäß 1 und in 2b den Ausschnitt A aus 2b und in 2c eine alternative Befestigung des Sensors im Dielektrikum,
• 3 eine Ansicht von oben auf eine zweite Ausführungsform einer erfindungsgemäßen Plasmabehandlungsanordnung,
• 4 in 4a eine Seitenansicht einer dritten Ausführungsform einer erfindungsgemäßen Plasmabehandlungsanordnung, bei der die Sensoren noch nicht gemäß in den Dielektrikum-Durchgangsöffnungen angeordnet sind, sowie ein erfindungsgemäßes Kit, und in 4b die Plasmabehandlungsanordnung gemäß 4b mit in den Dielektrikum-Durchgangsöffnungen angeordneten Sensoren und
• 5 eine vierte Ausführungsform einer erfindungsgemäßen Plasmabehandlungsanordnung.

The invention is explained in more detail below with reference to the accompanying drawings.

• 1 a top view of a first embodiment of a plasma treatment arrangement according to the invention,
• 2 in 2a a side view of the plasma treatment arrangement according to 1 and in 2 B section A from 2 B and in 2c an alternative mounting of the sensor in the dielectric,
• 3 a top view of a second embodiment of a plasma treatment arrangement according to the invention,
• 4 in 4a a side view of a third embodiment of a plasma treatment arrangement according to the invention, in which the sensors are not yet arranged in the dielectric through-openings, as well as a kit according to the invention, and in 4b the plasma treatment arrangement according to 4b with sensors arranged in the dielectric through holes and
• 5 a fourth embodiment of a plasma treatment arrangement according to the invention.

1 shows a plasma treatment arrangement 10 according to the invention for dielectrically impeded plasma treatment of a body surface 12 of a body. The plasma treatment arrangement has an electrode arrangement 14, which has at least one electrode 16 and a dielectric 18 as well as at least one sensor 38.i (i = 1, 2, ... In 1 is i = 8.).

The at least one electrode 16 is connected to an alternating high voltage generator 20, which is connected to a voltage source 22 for supplying electrical energy. The The alternating high-voltage generator 20 is also connected to a control device 24, by means of which the alternating high-voltage generator 20 is controlled in such a way that a predetermined alternating high voltage U _HV is applied to the at least one electrode 16. The plasma treatment arrangement 10, the alternating high-voltage generator 20, the voltage source 22 and the control device 24 are components of a plasma treatment system 26 according to the invention.

The AC high-voltage generator 20, the voltage source 22 and the control device 24 are arranged in an operating unit 28 and, together with the electrode arrangement 14, are components of a plasma treatment system 26 according to the invention. The operating unit 28 can be designed as a hand-held device, but this is not necessary. Alternatively, the AC high-voltage generator 20 is located in a stationary device to which the electrode arrangement 14 is connected.

The control device 24 is connected to the sensors 38.i for recording the parameter P _i measured by the sensor 38.i. The control device 24 compares the parameters Pi with a respective parameter setpoint interval I _i = [P _i,min , P _i,max ] stored in the control device 24. If at least one parameter P _i or at least 2, 3 or more parameters P _i are outside the respective parameter setpoint interval I _i , the control device 24 controls the alternating high-voltage generator 14 so that an alternating high voltage is applied to the electrode 16. The alternating high voltage is applied to the electrode 16 in pulses. It is preferred, but not necessary, that the parameters P _i are recorded at regular intervals between two pulses. If the parameters are again within the respective parameter setpoint interval I _i , the application of the alternating high voltage to the electrode is stopped. It is also possible that another parameter setpoint interval exists that only applies if the plasma treatment has been started. For example, this parameter setpoint interval contains the difference to the corresponding parameter that was measured before the start of the plasma treatment. If the corresponding parameter P _i is outside the second parameter setpoint interval, the plasma treatment is terminated. For example, if the redness of the skin decreases by more than a specified amount or the redness exceeds a threshold value, the plasma conversion is terminated.

The plasma treatment arrangement 10 has a tongue 30, which could also be referred to as an attachment, which can be inserted into the operating unit 28. By inserting it, the electrode 16 is electrically contacted with the alternating high-voltage generator 20. In addition, the sensors 38.i are electrically connected to the control device 24.

The electrode 16 can comprise a first partial electrode 32a and a second partial electrode 32b, but this is not necessary. If two partial electrodes 32a, 32b are present, they are preferably electrically insulated from one another. In this case, the first partial electrode 32a can be contacted by means of a first electrode contact 34a and the second partial electrode 32b can be contacted by means of a second electrode contact 34b. The electrode contacts 34a, 34b are each connected to the alternating high-voltage generator 20.

It is advantageous, but not necessary, if the alternating high-voltage generator 20 is designed to apply alternating high-voltage pulses to the electrode 16. In other words, a schematically drawn body surface 12 serves as a counter electrode, possibly floating, to the electrode 16.

It is possible, but not necessary, if the alternating high-voltage generator 20 is designed to apply alternating high-voltage pulses ±U _HV of opposite sign to the two electrode contacts 34a, 34b. This is to be understood in particular that the sum of the voltages applied to the electrode contacts 34a, 34b and thus to the partial electrodes 32a, 32b is always a good approximation of zero.

The sensors 38.i are connected to the respective connecting cables 36.i. The connecting cables 36.i are, as shown in 1 shown, electrically connected to the control device 24 when the plasma treatment arrangement 10 is connected to the operating unit 28.

2a shows a side view of the plasma treatment system 26. The electrode arrangement 14 rests against the body surface 12 with a contact side V ₁₄ , which could also be referred to as the front side.

At least one of the sensors 38.i can be a temperature sensor for measuring the parameter P in the form of a body surface temperature T of the body surface 12. For this purpose, the sensor 38.1 is, for example, a thermal resistor.

Alternatively or additionally, at least one of the sensors 38.i is a pH sensor for measuring the parameter P in the form of a pH value a of the body surface 12. For this purpose, this sensor 38.i is in contact with the body surface 12.

Again alternatively or additionally, at least one of the sensors 38.i is an oxygen saturation sensor for measuring the parameter P in the form of an oxygen saturation sO2 of the blood in the body surface 12. Such a sensor can, for example, have a light-emitting diode for emitting light and a photodiode for measuring light reflected from the body surface 12.

Alternatively or additionally, at least one of the sensors 38.i can be a skin redness sensor, by means of which the parameter P can be detected in the form of a change in the redness R of the skin. For this purpose, the sensor 38.i is, for example, a photo chip. The redness R of the skin is, for example, the ratio between the measured light intensity in a frequency interval for red light and a frequency interval for light of a different color, for example blue light.

2 B shows section A according to 2a . It can be seen that the sensor 38.1 is arranged in a dielectric through-opening 40.1. The other sensors 38.i are arranged in corresponding dielectric through-openings 40.i. The sensor 38.1 can have a sensor projection 42.1 with which it elastically engages in a through-opening recess 44.1. The sensor 38.1 is thereby connected in a form-fitting manner to the dielectric 18.

In 2 B In the case shown, the sensor 38.1 is arranged with play in the dielectric through-opening 40.1. However, it is also possible for the sensor 38.1 to form a tight fit with the dielectric through-opening 40.1.

The sensor 38.1 has a contact surface 48.1, with which it is electrically connected to a first conductor 46.1 of the connecting line 36.1, and a second contact surface 48.2, with which it is electrically connected to a second conductor 46.2 of the connecting line 36.1. In this way, the at least one sensor 38.i is supplied with voltage. In addition, the measured values can be read out via the conductors 46.1, 46.2.

The conductors 46.1, 46.2 can be formed by metallic conductors or by electrically conductive polymers, for example by polymer that contains graphite and/or metal powder. For example, the polymer is the same polymer from which the dielectric 18 is constructed, but this is not necessary.

2 B shows that the electrode 16 has electrode through-openings 50.i. The dielectric 18 also covers the electrode 16 in the area of the electrode through-openings 50.i. The electrode through-opening 50.i has a clear width D _50.1 . The dielectric through-opening 40.i runs within the electrode through-opening 50.i.

The dielectric 18 has projections 52.j (j = 1, 2, ...), the surfaces of which facing the contact side V ₁₄ form a contact surface F with which the electrode arrangement rests on the body surface 12 during operation of the plasma treatment arrangement 10. Gas spaces 54.j are formed between the projections 52.j, in which a plasma forms when an alternating high voltage with a sufficiently high voltage is applied to the electrode.

The gas spaces 54.j have a clear width L ₅₄ , which can be the same for all gas spaces 52.j, but does not have to be. The projections 52.j are preferably designed in the form of webs or knobs. They have, for example, a width of B ₅₂ = 0.5 to 3 mm.

2c shows an alternative fastening of the sensor 38.1 in the dielectric 18. For this purpose, the sensor 38.1 has a sensor recess 43.1 into which a through-opening projection 45.1 engages.

3 shows a view from above of a second embodiment of a plasma treatment arrangement 10 according to the invention. In the detailed image on the right, an enlargement of the area A in cross section with respect to the section line B - B can be seen. It can be seen that the two conductors 46.1, 46.2 of the connecting line 36.1 are arranged in a recess 56.1.

The connecting cable 36.1 is completely accommodated in the recess 56.1. The connecting cable 36.1 is reversibly held in the recess 56.1 by means of a holding element 58.1 in the form of a projection. The holding element can also be referred to as a holding structure.

The sensor 38.1, which is initially separated from the electrode arrangement 14, is inserted into the dielectric through-opening 40.1 to prepare the plasma treatment arrangement 10. The connecting line 36.1 is then pressed into the recess 56.1.

4a shows a kit 60 according to the invention, which has the electrode arrangement 14 and the sensors 38.i, wherein the sensors 38.i are designed such that they can be connected to the dielectric through-openings 40.j, in particular in a form-fitting manner, by being inserted into these. Preferably, the alternating high-voltage generator 20 and/or the voltage source 22 and/or the control device 24 are part of the kit 60. In particular, the operating unit 28 is part of the kit 60.

4b shows a cross section through the electrode arrangement 14, so that the sensors 38.i inserted into the respective dielectric through-opening 40.1 are visible.

The electrode arrangement 14 is manufactured, for example, by pouring a pourable elastomer, for example silicone, into a corresponding mold.

5 shows a further embodiment of a plasma treatment arrangement 10 according to the invention, in which the sensor 38.1 is connected to a base body 62 and forms a sensor arrangement 64 with it. The base body 62 is designed separately from the electrode arrangement 14. It is possible for the sensor arrangement 64 to be separably connected, in particular in a form-fitting and/or friction-fitting manner, to the electrode arrangement 14. Alternatively, it is possible for the base body 62 to be firmly connected to the electrode arrangement 14.

In the context of the present description, the feature that the sensor arrangement is separate from the electrode arrangement is understood in particular to mean that they were manufactured separately and connected to one another so that a uniformly handleable object is created. In particular, there is a joint between the two. The joint can be flat, strip-shaped or point-shaped or have another shape. The joint can be formed, for example, by an adhesive. Alternatively, the electrode arrangement and the sensor arrangement are non-destructively, in particular reversibly, separably connected to one another. It is then possible to separate the electrode arrangement and the sensor arrangement from one another after use in order to dispose of them separately if necessary. In addition, different sensor arrangements can be used for the same electrode arrangement. For example, the arrangement facing the body surface, i.e. sensor arrangement or electrode arrangement, can be disposed of, but the other sensor arrangement can be used again. In particular, the electrode arrangement can be disposed of and the sensor arrangement reused. Alternatively, the sensor arrangement can be disposed of and the electrode arrangement reused.

List of reference symbols

10

Plasma treatment arrangement

12

Body surface

14

Electrode arrangement

16

electrode

18

Dielectric

20

AC high voltage generator

22

Voltage source

24

Control device

26

Plasma treatment system

28

Operating unit

30

Tongue, base

32

Partial electrode

34

Electrode contacting

36

Connection cable

38

Sensors

40

Dielectric via

42

Sensor advantage

43

Sensor return

44

Through hole recess

45

Through hole projection

46

Director

48

Contact area 50 Electrode through hole

52

head Start

54

Gas room

56

deepening

58

Holding element

60

Kit

B52

Width of the projection

D50

Clear width of the electrode passage opening

F

Contact surface

i

Running index of sensors

L54

clear width of the gas space

R14

back

pi

parameter

V14

Investment page

Claims (10)

Plasma treatment arrangement (10) for dielectrically impeded plasma treatment of a body surface (12) of a body, with (a) an electrode arrangement (14) which has (i) a contact side (V ₁₄ ) facing the body surface (12), (ii) at least one electrode (16) and (iii) a dielectric (18) which covers the at least one electrode (16), and (b) at least one sensor (38) which is designed to detect at least one parameter (Pi) of the body surface, (c) wherein the dielectric (18) has at least two dielectric through-openings (40), each forming a channel through which wound secretion can be discharged, characterized in that (d) the at least one sensor (38) is arranged in the dielectric through-opening (40). Plasma treatment arrangement (10) according to Claim 1 , characterized in that (a) the at least one sensor (38) is arranged in the dielectric through-opening (40) without being materially connected and/or (b) forms a snug fit with the dielectric through-opening (40). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that the electrode arrangement (14) has at least one connecting line (36) for the at least one sensor (38), which is arranged such that the sensor (38) is contacted when it is arranged in the dielectric through-opening (40). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that (a) the at least one electrode (16) has an electrode through-opening (50), (b) the dielectric (18) completely covers the at least one electrode (16) even in the region of the at least one electrode through-opening (50), and (c) the at least one sensor (38) is arranged in the electrode through-opening (50). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that a channel number of channels is at least three times, in particular at least five times, a sensor number of sensors (38). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that (a) the dielectric (18) has dielectric projections which form at least one gas space (54) when the plasma treatment arrangement rests with the support side on the surface to be treated, (b) at least one dielectric through-opening (40) opens into the gas space (54) and (c) a sensor is arranged in this at least one dielectric through-opening (40). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that (a) at least one sensor (38) has a sensor projection (42) which elastically engages in a through-opening recess (44) in the dielectric through-opening (40) in which the sensor (38) is arranged and/or (b) at least one sensor (38) has a sensor recess into which a through-opening projection of the dielectric through-opening (40) elastically engages. Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that at least one sensor (38) (with regard to its cross section) has an oversize in relation to corresponding dielectric through-openings (40). Plasma treatment arrangement (10) according to one of the preceding claims, characterized in that the plasma treatment arrangement is provided with (a) an alternating high-voltage generator (20) which is electrically connected to the electrode (16) and (b) a voltage source (22) which is connected to the at least one sensor (38) for supplying the sensor (38) with electrical energy, and (c) a control device (24) which is set up for automatically (i) detecting measured values of the at least one sensor (38) and (ii) controlling the alternating high-voltage generator (20) depending on the detected measured values. Method for producing a plasma treatment arrangement (10), comprising the steps of (a) providing an electrode arrangement (14) which has (i) a contact side (V ₁₄ ) facing the body surface (12), (ii) at least one electrode (16) and (iii) a dielectric (18) which (completely) covers the at least one electrode (16), and (b) providing at least one sensor (38) which is designed to detect at least one parameter (P _i ) of the body surface, (c) wherein the electrode arrangement (14) is produced such that the dielectric (18) has at least two dielectric through-openings (40), each of which forms a channel through which wound secretion can be discharged, characterized by the step (e) connecting the at least one sensor (38) to the electrode arrangement (14) by inserting the sensor (38) into the dielectric through-opening (40).

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