# US 2021/0274907 A1 · Hand held dermaplaning device and dermaplaning process

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- Number: US 2021/0274907 A1
- Document ID: US20210274907A1
- Status: Published application
- Kind: A1
- Application number: 17/198,446
- Filed: 2021-03-11
- Published: 2021-09-09
- Earliest claimed: 2013-09-09
- Assignees: DD Karma LLC
- Applicants: DD Karma LLC
- Inventors: Dara Levy
- Web page: https://patentgrep.com/patent/US20210274907A1

## CPC

- A45D 26/0004: {by abrasion}
- A61B 17/320068: {using mechanical vibrations, e.g. ultrasonic (A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745)}
- A61B 17/54: Chiropodists' instruments {, e.g. pedicure}
- A61B 50/20: Holders specially adapted for surgical or diagnostic appliances or instruments (drapes with means to hold surgical instruments A61B46/23; for catheters A61M25/02)
- B26B 7/00: Hand knives with reciprocating motor-driven blades
- H02J 7/00: Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
- H02J 7/70: characterised by the mechanical construction
- H02J 50/10: using inductive coupling
- A45D 2200/1054: Abrasive cosmetic skin peeling or scrubbing
- A45D 2200/207: Vibration, e.g. ultrasound
- A61B 2017/00398: {using powered actuators, e.g. stepper motors, solenoids}
- A61B 2017/00473: {Distal part, e.g. tip or head (A61B2017/00464 takes precedence)}
- A61B 2017/00734: {battery operated}
- A61B 2017/00761: {Removing layer of skin tissue, e.g. wrinkles, scars or cancerous tissue}
- A61B 2017/320071: {with articulating means for working tip}
- A45D: HAIRDRESSING OR SHAVING EQUIPMENT (wigs, toupees or the like A41G3/00, A41G5/00; hairdressers' chairs A47C1/04; hair cutting appliances, razors B26B); EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- B26B: HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR (for harvesting A01D; for horticulture, for forestry A01G; for butchering or meat treatment A22; for manufactering or repairing footwear A43D; nail clippers or cutters A45D29/02; kitchen equipment A47J; {vegetable slicers, julienne cutters and similar devices and holders therefor, B26D3/28}; for surgical purposes A61B; for metal B23D; cutting by abrasive fluid jets B24C5/02; plier-like tools with cutting edges B25B7/22; pincers B25C11/02; handles for hand implements, in general B25G; guillotine-type cutters B26D; {perforating by non-mechanical means, e.g. by fluid jet, B26F1/26}; for erasing B43L19/00; for textile materials D06H)
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

A method and a hand-held device for dermaplaning is disclosed that includes a blade assembly which includes a blade, a blade holder and a safety cage. In accordance with an important aspect of the invention, the safety cage limits the amount of penetration of the blade into the facial skin to enable the device to be safely used by non-professionals. The dermaplaning device includes a vibration generator that causes the blade to vibrate at a predetermined frequency. Various embodiments of the hand-held dermaplaning device are disclosed for vibrating the blade.

## Claims

### Claim 1

A blade retainer for holding replaceable blade assemblies of a skin treatment device, the blade retainer comprising:
a retainer housing;
a plurality of elongated retainer slots arranged in parallel in the retainer housing, each retainer slot configured to receive a blade assembly therein; and
first and second pairs of flexible retention arms located at each retainer slot, each of the first and second pairs of flexible retention arms including first and second retention arms configured to cooperate with opposite first and second sides of the blade assembly to releasably retain the blade assembly in the retainer slot.

### Claim 2 (depends on 1)

The blade retainer according to claim 1, wherein each retainer slot extends in a longitudinal direction and has an open end and a closed end, the open end configured to slidably pass a hand-held skin treatment device therethrough in the longitudinal direction when attaching and detaching the skin treatment device to the blade assembly retained in the retainer slot.

### Claim 3 (depends on 2)

The blade retainer according to claim 2, wherein the closed end is configured to receive an enlarged nose located at an end of the blade assembly.

### Claim 4 (depends on 2)

The blade retainer according to claim 2, wherein the first and second pairs of retention arms of each retainer slot are spaced apart in the longitudinal direction.

### Claim 5 (depends on 1)

The blade retainer according to claim 1, wherein each retainer slot is configured to receive a blade of the blade assembly between each of the first and second pairs of retention arms.

### Claim 6 (depends on 1)

The blade retainer according to claim 1, wherein each retention arm includes an extending horizontal leg portion that is configured to be received in a corresponding notch provided on each side of the blade assembly.

### Claim 7 (depends on 1)

The blade retainer according to claim 1, wherein each retention arm is configured to engage beneath an elongated slot provided on each side of the blade assembly to enable corresponding rails on the skin treatment device to be received in the elongated slots on the blade assembly.

### Claim 8 (depends on 1)

The blade retainer according to claim 1, wherein the first and second pairs of retention arms are configured to release the blade assembly from the retainer slot in response to application of an upward force to the blade assembly away from the retainer slot.

### Claim 9 (depends on 1)

The blade retainer according to claim 1, wherein the blade retainer includes six retainer slots with a corresponding blade assembly retained therein.

### Claim 10 (depends on 1)

The blade retainer according to claim 1, wherein each retainer slot is oriented retainer to enable the blade assembly to be loaded directly onto the skin treatment device without requiring a user to touch the blade assembly.

### Claim 11 (depends on 1)

The blade retainer according to claim 1, wherein the blade retainer has a shape with a major axis and a minor axis, the retainer slots being arranged perpendicular to the major axis.