# US 11,298,529 B2 · Needle tip mounted on skin care device and skin care device

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- Number: US 11,298,529 B2
- Document ID: US11298529B2
- Status: Granted
- Kind: B2
- Application number: 16/697,129
- Filed: 2019-11-26
- Published: 2020-03-26
- Granted: 2022-04-12
- Earliest claimed: 2018-05-25
- Assignees: Jeisys Medical Inc.
- Applicants: Jeisys Medical Inc.
- Inventors: Kyoung Ho An; Seung Eok Jeon
- Web page: https://patentgrep.com/patent/US11298529B2

## CPC

- A61N 1/0502: {Skin piercing electrodes}
- A61N 1/06: for high-frequency therapy
- A61N 1/322: {Electromedical brushes, combs, massage devices}
- A61N 1/328: {for improving the appearance of the skin, e.g. facial toning or wrinkle treatment}
- A61B 18/1477: {Needle-like probes}
- A61B 2018/0047: {Upper parts of the skin, e.g. skin peeling or treatment of wrinkles}
- A61B 2018/143: {multiple needles}
- A61N 1/0476: {Array electrodes (including any electrode arrangement with more than one electrode for at least one of the polarities)}
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A needle tip mounted on a skin care device and the skin care device are provided to prevent a proximity effect. The needle tip includes a case, a holder disposed in the case and reciprocating in a vertical direction, and a plurality of needle electrodes disposed in the holder, a current being applied to the plurality of needle electrodes. The plurality of needle electrodes include a first group of needle electrodes and a second group of needle electrodes to which the current is applied at mutually different times.

## Claims

### Claim 1

A needle tip mounted on a skin care device, the needle tip comprising:
a case;
a holder disposed in the case and reciprocating in a vertical direction;
a plurality of needle electrodes disposed in the holder,
wherein each of the plurality of needle electrodes has an equal height,
wherein the plurality of needle electrodes are arranged in at least one of one or more rows and one or more columns on a plane perpendicular to the vertical direction,
wherein the plurality of needle electrodes include a first group of needle electrodes and a second group of needle electrodes,
wherein the needle electrodes of the first group are configured to apply first currents to a target point area of a skin at a first time, and the needle electrodes of the second group are configured to apply second currents to the target point area of the skin at a second time, which is different from the first time, such that the first group and the second group are configured to alternatively apply the first currents and the second currents to the target point of the skin, and
wherein the needle electrodes of the first group and the needle electrodes of the second group are connected with one power source in parallel; and
a switch configured to:
be operated such that power from the power source is alternately applied to the needle electrodes of the first group and the needle electrodes of the second group; and
be operated such that high frequency energy configured to be provided to a reference area of the target point per reciprocating drive period is divided by alternative oscillating and is provided to the reference area of the target point.

### Claim 2 (depends on 1)

The needle tip of claim 1, wherein the needle electrodes of the first group of needle electrodes and the needle electrodes of the second group of needle electrodes are alternately arranged based on the one or more rows and alternately arranged based on the one or more column.

### Claim 3 (depends on 2)

The needle tip of claim 2, wherein the needle electrodes of the first group are arranged along with one or more first diagonal lines on the plane,
wherein the needle electrodes of the second group are arranged along with one or more second diagonal lines on the plane, and
wherein the one or more first diagonal lines and the one or more second diagonal lines are not overlapping and are parallel to each other.

### Claim 4 (depends on 3)

The needle tip of claim 3, wherein each of the one or more first diagonal lines and the one or more second diagonal lines is aligned at 45 degree angle with respect to each of the one or more rows and the one or more column, on the plane.

### Claim 5 (depends on 4)

The needle tip of claim 4, wherein a number of the plurality of needle electrodes is 49, a number of the one or more rows is seven, and a number of the one or more columns is seven.

### Claim 6 (depends on 1)

The needle tip of claim 1, wherein the first currents and the second currents are alternating currents.

### Claim 7 (depends on 1)

The needle tip of claim 1, wherein the needle tip is mounted on the skin care device in a monopolar scheme.

### Claim 8

A skin care device comprising:
a main body in which a display module and an operating module are disposed;
a conductive module extending to one side of the main body and including a first cable and a second cable;
a hand piece disposed on the first cable;
a needle tip mounted on the hand piece;
a driving module;
a ground electrode pad disposed on the second cable; and
an electronic control module electrically connected with the needle tip through the first cable and electrically connected with the ground electrode pad through the second cable,
wherein the needle tip includes:
a case;
a holder disposed in the case to reciprocate in a vertical direction by the driving module;
a plurality of needle electrodes disposed in the holder,
wherein each of the plurality of needle electrodes has an equal height,
wherein the plurality of needle electrodes are arranged in at least one of one or more rows and one or more columns on a plane perpendicular to the vertical direction,
wherein the plurality of needle electrodes include a first group of needle electrodes and a second group of needle electrodes,
wherein the electronic control module is configured to apply a current to the plurality of needle electrodes,
wherein the needle electrodes of the first group are configured to apply first currents to a target point area of a skin at a first time, and the needle electrodes of the second group are configured to apply second currents to the target point area of the skin at a second time, which is different from the first time, such that the first group and the second group are configured to alternatively apply the first currents and the second currents to the target point of the skin,
wherein the driving module is configured to reciprocate the plurality of needle electrodes relatively to the case when the case is held against the skin, and
wherein the needle electrodes of the first group and the needle electrodes of the second group are connected with one power source in parallel; and
a switch configured to:
be operated such that power from the power source is alternately applied to the needle electrodes of the first group and the needle electrodes of the second group; and
be operated such that high frequency energy configured to be provided to a reference area of the target point per reciprocating drive period is divided by alternative oscillating and is provided to the reference area of the target point.

### Claim 9 (depends on 8)

The skin care device of claim 8, wherein the needle electrodes of the first group and the needle electrodes of the second group are alternately arranged based on the one or more rows and alternately arranged based on the one or more column,
wherein the needle electrodes of the first group are arranged along with one or more first diagonal lines on the plane,
wherein the needle electrodes of the second group are arranged along with one or more second diagonal lines on the plane, and
wherein the one or more first diagonal lines and the one or more second diagonal lines are not overlapping and are parallel to each other.