1. A method of preparing an absorbent wound care device, said method comprises the steps of:
providing a wound care device comprising an absorbent element, said element having a proximal and a distal surface,
providing an active agent,
applying the active agent by spray coating to a central portion of the proximal surface of the absorbent element in a zone having an exact defined area.
2. A method according to claim 1, wherein the wound care device is sterilized before applying the active agent.
3. A method according to claim 1, wherein the active agent is homogenously distributed within the zone.
4. A method according to claim 1, wherein the active agent is applied in a predetermined pattern.
5. A method according to claim 1, wherein a gel-forming polymer is applied after the active agent.
6. A method according to claim 1 wherein a gel-forming polymer is provided together with the active agent.
7. A method according to claim 1 wherein the active agent is provided in the form of a solution.
8. A method according to claim 1 wherein the active agent is provided in the form of a dispersion.
9. An absorbent wound care device comprising an absorbent element and an active agent, said absorbent element having a proximal and a distal surface, wherein the active agent is positioned on the proximal surface of the absorbent element and wherein the active agent is positioned in a zone having an exact defined area covering a central portion of the absorbent element, and wherein said area of the zone covers only a portion of the proximal surface of the absorbent layer.
10. A wound care device according to claim 11, wherein the ratio between the area of the zone and the thickness of the zone is at least 20000.
11. A wound care device according to claim 1, wherein the absorbent element is selected from the group of foam, alginates and super absorbent materials or combinations thereof.
12. A wound care device according to claim 1, wherein the device further comprises a net-like layer.
13. A wound care device according to claim 1, wherein the active agent is selected from the group of enzymes or proteins
14. A wound care device according to claim 1, wherein the device further comprises a gel-forming polymer.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A method for upconverting and filtering an information signal having a frequency, the method comprising:
providing a micromechanical device having a first port for receiving the information signal, a second port for receiving an AC signal having a desired frequency and an output port; and
vibrating the micromechanical device so that the micromechanical device translates the frequency of the information signal upward based on the desired frequency and filters the information signal.
2. The method of claim 1 further comprising isolating the first port from the second port.
3. The method of claim 1 further comprising isolating each of the ports from each of the other ports.
4. The method of claim 1 wherein the desired frequency is more than 300 MHz.
5. The method of claim 1 wherein the micromechanical device is vibrated to also add gain to the information signal.
6. The method of claim 1 wherein the device is switchable and tunable.
7. A micromechanical up-converting mixer-filter apparatus for upconverting and filtering an information signal having a frequency, the apparatus comprising:
a mixing micromechanical transducer having a first port for receiving the information signal, a second port for receiving an AC signal having a desired frequency and an output port; and
a micromechanical resonator coupled to the transducer wherein the apparatus translates the frequency of the information signal upwards based on the desired frequency and filters the information signal.
8. The apparatus as claimed in claim 7 wherein the apparatus also adds gain to the information signal.
9. The apparatus as claimed in claim 7 wherein the transducer and the resonator are intercoupled by a non-conductive part to isolate the first and second ports.
10. The apparatus as claimed in claim 7 further comprising means for isolating each of the ports from each of the other ports.
11. The apparatus as claimed in claim 7 wherein the resonator is switchable and tunable.
12. The apparatus as claimed in claim 7 wherein the apparatus is a single-sideband (SSB) upconverter.
13. The apparatus as claimed in claim 7 wherein the apparatus is an RF micromechanical upconverting mixer-filter apparatus.