EP-4739240-A1 - DEVICES AND METHODS FOR FRACTIONAL TREATMENT OF TISSUE UTILIZING TISSUE PROPERTIES

EP4739240A1EP 4739240 A1EP4739240 A1EP 4739240A1EP-4739240-A1

Abstract

A skin tissue treatment device and method comprising at least one first elongated electrode having a first polarity and configured for receiving electric current from an electric current source and for being inserted into the skin tissue to one or more depths. Also comprising at least one second electrode located in vicinity of the at least one first elongated electrode and configured to receive the electric current from the electric current source at a second and opposite polarity to the at least one first elongated electrode and an actuating mechanism being connected to at least to the at least one first elongated electrode and configured to spatially move the first elongated electrode along one or more axes. The at least one controller connected to the at least one first elongated electrode, the at least one second electrode, the electric current source, and the actuating mechanism; and the at least one controller being configured to: control the electric current source; actuate the actuating mechanism; and selectively apply fractional treatment of at least one of skin tissue ablation, skin tissue coagulation, or skin tissue mechanical insertion to the skin tissue.

Inventors

Ozer Armon, Zipora
GERSHONOWITZ, AMIKAM
BEN ESTI, EYAL
ELNEKAVE, Mordechai (Moti)

Assignees

Pollogen Ltd

Dates

Publication Date: 20260513
Application Date: 20240801

Claims (18)

1. A skin tissue treatment device comprising: an electric current source configured to provide Alternating Current (AC); Direct Current (DC) or any combination thereof; at least one first elongated electrode having a first polarity and configured for receiving electric current from the electric current source and for being inserted into the skin tissue to one or more depths; at least one second electrode located in vicinity of the at least one first elongated electrode and configured to receive the electric current from the electric current source at a second and opposite polarity to the at least one first elongated electrode; an actuating mechanism being connected to at least the at least one first elongated electrode and configured to spatially move the first elongated electrode along one or more axes; at least one controller connected to the at least one first elongated electrode, the at least one second electrode, the electric current source, and the actuating mechanism; and the at least one controller being configured to: control the electric current source; actuate the actuating mechanism; and selectively apply treatment of skin tissue ablation, skin tissue coagulation, or skin tissue mechanical insertion to the skin tissue.
2. The device of claim 1, further comprising a handpiece configured to be held by a user and, the handpiece comprising; the at least one first elongated electrode; the at least one second electrode; and the actuating mechanism.
3. The device of claim 2, wherein the handpiece further comprises a disposable tip removably connectable to the handpiece with the disposable tip comprising at least one of: the at least first elongated electrode; or the at least one second electrode.
4. The device of claim 1, further comprising a sensing system configured to transmit sensing data of the skin tissue to the controller, wherein the sensing data is indicative of at least one of electrical impedance or mechanical impedance.
5. The device of claim 1, wherein the at least one second electrode configured to be at least one of: elongated shaped configured to pass into the skin tissue; flat shaped configured to contact a surface of the skin tissue; or flat shaped having perforated holes configured to pass at least one first elongated electrode through to the skin tissue.
6. The device of claim 1, wherein a plurality of the at least one elongated electrode is configured in a comb-like one dimensional array.
7. The device of claim 6, wherein a plurality of the comb-like one dimensional arrays are arranged beside each other along a second axis, forming a two-dimensional array of the at least one elongated electrode.
8. The device of claim 1, wherein the at least one elongated electrode is configured to have on the surface at least one of a plurality of insulated patterns on and further comprises a plurality of conductive points along the plurality insulated patterns.
9. The device of claim 8, wherein the plurality of insulated patters is configured on the at least second electrode in an elongated shape.
10. The device of claim 1, wherein the actuator is additionally configured to rotate the at least one elongated electrode around a longitudinal axis of the at least one elongated electrode.
11. A skin tissue treatment method comprising: providing an electric current source configured to provide Alternating Current (AC); Direct Current (DC) or any combination thereof; providing at least one first elongated electrode having a first polarity and configured for receiving electric current from the electric current source and for being inserted into the skin tissue to one or more depths; providing at least one second electrode located in vicinity of the at least one first elongated electrode and configured to receive the electric current from the electric current source at a second and opposite polarity to the at least one first elongated electrode; providing an actuating mechanism being connected to at least the at least one first elongated electrode and configured to spatially move the first elongated electrode along one or more axes; providing connected to the at least one first elongated electrode, the at least one second electrode, the electric current source, and the actuating mechanism; providing at least one controller; placing the at least one elongated electrode and the at least one second electrode into contact with the skin tissue; selectively activating, by the at least one controller, the electric current source for applying an electric current profile to at least one of the at least one first elongated electrode or the at least one second electrode, and the actuating mechanism to move the at least one elongated electrode for a predetermined distance into or out of the skin tissue, wherein treatment of skin tissue ablation, skin tissue coagulation, or skin tissue mechanical insertion is selectively applied to the skin tissue.
12. The treatment skin tissue method of claim 11, further comprising activating, by the at least one controller, the electric current source to provide an electric current profile to the at least one first elongated electrode and the at least one second electrode, for a predetermined first time period; deactivating, by the at least one controller, the electric current source; activating the actuating mechanism, by the at least one controller, to move the at least one elongated electrode for a predetermined distance into or out of the skin tissue; and activating, by the at least one controller, the actuating mechanism to move the at least one elongated electrode for a second distance.
13. The method of claim 11, wherein the method further comprises: providing a sensing system configured to transmit sensing data of the skin tissue that is indicative of at least one of electrical impedance or mechanical impedance; and adjusting, based on the sensing data and by the at least one controller, at least one of; the electric current received by the at least one first elongated electrode, or the electric current received by the at least the at least one second electrode or activating the actuating mechanism.
14. The method of claim 13, wherein the method further comprises: adjusting, based on the sensing data and by the at least one controller, the electric current received to selectively apply skin tissue ablation or skin tissue coagulation.
15. The method of claim 11, wherein a plurality of the at least one elongated electrode is provided, and are divided into two or more groups of elongated electrodes; and the method further comprises actuating, by the at least one controller, the two or more groups to move in different activation patterns into and out of the skin tissue.
16. The method of claim 15, wherein the plurality of the at least one elongated electrode may comprise at least one of: equal lengths; different lengths; equal transverse cross section areas or shapes; or different transverse cross section areas/shapes.
17. The method of claim 11, wherein the actuating mechanism is configured to additionally rotate the at least one elongated electrode around the longitudinal axis of the at least one elongated electrode; and the method further comprises actuating, by the at least one controller, the actuating mechanism to move the at least one elongated electrode a predetermined distance into or out of the skin tissue while rotating around the longitudinal axis of the at least one elongated electrode.
18. The method of claim 11, wherein the at least one second electrode configured to be a flat shape having perforated holes that are configured to pass the at least one first elongated electrode through; and the method further comprising actuating, by the at least one controller, the actuating mechanism to move the at least one elongated electrode a predetermined distance through the perforated holes into the skin tissue.

Description

DEVICES AND METHODS FOR FRACTIONAL TREATMENT OF TISSUE UTILIZING TISSUE PROPERTIES CROSS REFERENCE TO RELATED APPLICATIONS This application claims the benefit of priority of U.S. Provisional Patent Application No. 63/530,561, filed August 3, 2024, entitled “DEVICES AND METHODS FOR FRACTIONAL TREATMENT OF TISSUE UTILIZING TISSUE PROPERTIES”, the contents of which are incorporated herein by reference in its entirety. TECHNOLOGICAL FIELD The present disclosure is in the medical, aesthetic, field and relates specifically to devices and methods for treatment of tissue, such as the skin, for aesthetic and/or cosmetic purposes. More specifically, the present disclosure relates to devices and methods for fractional treatment of skin tissue of a subject. BACKGROUND Various skin tissue treatment techniques for skin tissue rejuvenation are available. Some treatments involve fractional skin tissue treatment, a term used to describe a form of treatment that creates a discrete array of relatively small treatment spots in the skin tissue and leaves sites of healthy and untreated skin tissue around the treatment spots. The treatment spots may be created by optical (e.g. laser), electromagnetic (e.g. radio frequency), sound (e.g. Ultrasound) or other energies/modalities. At each treatment spot a micro damage is created in the skin tissue. The micro damage in the skin tissue at the treatment spots triggers a natural healing response of the skin tissue. The intact healthy skin tissue surrounding the treatment spots provides basis for healing the micro damage. Examples for fractional skin tissue treatment can be found in WO2021234609A1 and WO2021234605A1 assigned to the assignee of the present disclosure and are incorporated herein by reference in their entirety. SUMMARY OF INVENTION The presently disclosed subject matter provides a device and methods for skin tissue treatment. The present disclosure provides a skin device comprising: an electric current source configured to provide Alternating Current (AC); Direct Current (DC) or any combination thereof; at least one first elongated electrode having a first polarity and configured for receiving electric current from the electric current source and for being inserted into the skin tissue to one or more depths; at least one second electrode located in vicinity of the at least one first elongated electrode and configured to receive the electric current from the electric current source at a second and opposite polarity to the at least one first elongated electrode; an actuating mechanism being connected to at least the at least one first elongated electrode and configured to spatially move the first elongated electrode along one or more axes; at least one controller connected to the at least one first elongated electrode, the at least one second electrode, the electric current source, and the actuating mechanism. The at least one controller being configured to: control the electric current source; actuate the actuating mechanism; and selectively apply treatment of skin tissue ablation, skin tissue coagulation, or skin tissue mechanical insertion to the skin tissue. In one aspect of the disclosed subject matter, the device further comprises a handpiece configured to be held by a user. The handpiece comprising; the at least one first elongated electrode; the at least one second electrode; and the actuating mechanism. The device wherein the handpiece further comprises a disposable tip removably connectable to the handpiece with the disposable tip comprising at least one of: the at least first elongated electrode; or the at least one second electrode. Also, device further comprising a sensing system configured to transmit sensing data of the skin tissue to the controller, wherein the sensing data is indicative of at least one of electrical impedance or mechanical impedance. In another aspect of the disclosed subject matter, there device has the at least one second electrode configured to be at least one of: elongated shaped configured to pass into the skin tissue; flat shaped configured to contact a surface of the skin tissue; or flat shaped having perforated holes configured to pass at least one first elongated electrode through to the skin tissue. An aspect of the device wherein a plurality of the at least one elongated electrode is configured in a comb-like one dimensional array, and wherein a plurality of the comb-like one dimensional arrays are arranged beside each other along a second axis, forming a two-dimensional array of the at least one elongated electrode. Another aspect of the device wherein the at least one elongated electrode is configured to have on the surface at least one of a plurality of insulated patterns on and further comprises a plurality of conductive points along the plurality insulated patterns, and wherein the plurality of insulated patters is configured on the at least second electrode in an elongated shape. In yet another aspect of the device wherein