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1. WO2020115224 - STRUCTURE DE MICROLAME ET PROCÉDÉ DE TRAITEMENT DE TISSU

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

What is claimed is:

1. A structure comprising:

a plurality of microblades comprised of an electrical conductor, each of the plurality of microblades including a shaft and a tip adjacent to an end of the shaft, the tip including a plurality of surfaces arranged to surround a solid core of the tip, and at least two of the plurality of surfaces tapering toward the end of the shaft.

2. The structure of claim 1 wherein each of the plurality of surfaces is planar.

3. The structure of claim 1 wherein the tip is arranged on a first portion of the shaft, and further comprising:

a dielectric coating on a second portion of the shaft.

4. The structure of claim 3 further comprising:

a plurality of plates having a stacked arrangement,

wherein the second portion of the shaft of each of the plurality of microblades is attached to one of the plurality of plates, and the dielectric coating is located on surfaces of the plate.

5. The structure of claim 1 further comprising:

a plurality of plates having a stacked arrangement, each of the plurality of plates including at least one of the plurality of microblades.

6. The structure of claim 5 wherein adjacent pairs of the plurality of plates in the stacked arrangement include different numbers of the plurality of microblades.

7. The structure of claim 6 wherein the different numbers in the adjacent pairs increment or decrement by unity.

8. The structure of claim 5 wherein the stacked arrangement of the plates places the plurality of microblades in a rhombus-shaped array.

9. The structure of claim 5 wherein each of the plurality of plates includes at least one alignment opening.

10. The structure of claim 5 wherein each of the plurality of plates includes a first alignment opening and a second alignment opening spaced from the first alignment opening, the first alignment opening having a circular shape and the second opening having an oval shape.

11. The structure of claim 5 further comprising:

a power supply having a first output terminal and a second output terminal,

wherein the plurality of plates are arranged in adjacent pairs in the stacked arrangement, and one of the plurality of plates in each of the adjacent pairs is connected to the first output terminal and the other of the plurality of plates in each of the adjacent pairs is connected to the second output terminal.

12. The structure of claim 11 wherein the at least one of the plurality of microblades extends from a first side edge of each of the plurality of plates, each of the plurality of plates includes one or more tabs arranged at a second side edge of each of the plurality of plates that is opposite to the first side edge, and the one or more tabs of each of the plurality of plates are configured to establish an electrical connection with either the first output terminal or the second output terminal of the power supply.

13. The structure of claim 12 wherein the one or more tabs on each adjacent pair of the plurality of plates are placed on the second side edge to permit the electrical connection of one of the plurality of plates in each adjacent pair to the first output terminal of the power supply and to permit the electrical connection of the other of the plurality of plates in each adjacent pair to the second output terminal of the power supply.

14. The structure of claim 5 further comprising:

a treatment tip,

wherein the plurality of plates are arranged as an assembly inside the treatment tip, and the assembly is spring-loaded for movement between a first position in which the tip of each the plurality of microblades is extended from the treatment tip and a second position in which the tip of each of the plurality of microblades is retracted into the treatment tip.

15. The structure of claim 1 wherein the plurality of surfaces include a first planar surface, a second planar surface separated from the first planar surface by a thickness of the shaft, and a pair of inclined surfaces that connect opposite edges of the first planar surface and the second planar surface.

16. A method comprising:

applying an etch mask to a plate; and

etching first portions of the plate that are unmasked by the etch mask with an etching process to completely remove the first portions of the plate,

wherein the plate includes second portions that are masked by the etch mask during the etching process, the second portions include a plurality of microblades each having a shaft and a tip adjacent to an end of the shaft, and the tip includes a plurality of surfaces at least two of which taper toward the end of the shaft.

17. The method of claim 16 further comprising:

removing the etch mask; and

applying a dielectric coating on a portion of the shaft of each of the plurality of microblades,

wherein the tip is uncoated by the dielectric coating.

18. The method of claim 17 wherein the dielectric coating is applied by physical vapor deposition.

19. The method of claim 17 wherein the dielectric coating is applied by sputter deposition.

20. A treatment method comprising:

inserting respective tips of a plurality of microblades arranged in a rhombus -shaped pattern to a given depth into tissue;

energizing the plurality of microblades in alternating rows of the rhombus-shaped pattern with opposite polarities of radio-frequency energy, and

treating the tissue with the radio-frequency energy delivered from the respective tips of the plurality of microblades.