SILKPRO Titanium Diode Laser System SILKPRO-S20S-TWC

K222862 · Lotuxs Medtech (Suzhou) Co., Ltd. · GEX · Jul 30, 2023 · General, Plastic Surgery

Device Facts

• Record ID: K222862
• Device Name: SILKPRO Titanium Diode Laser System SILKPRO-S20S-TWC
• Applicant: Lotuxs Medtech (Suzhou) Co., Ltd.
• Product Code: GEX · General, Plastic Surgery
• Decision Date: Jul 30, 2023
• Decision: SESE
• Submission Type: Traditional
• Regulation: 21 CFR 878.4810
• Device Class: Class 2
• Attributes: Therapeutic

Intended Use

The indications for use for the SILKPRO-S20S-TWC include: The Super Hair Removal (SHR) Mode are intended for temporary hair reduction. The indications for use for the SILKPRO-S20S-755A include: The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term, stable reduction in the number of hairs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen. Use on all skin types (Fitzpatrick L-VI), including tanned skin.(HR. SHR Modes) The indications for use for the SILKPRO-S20S-810B include: The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term. stable reduction in the number of airs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen. Use on all skin types (Fitzpatrick I-VI), including tanned skin.(HR, and SHR Modes)

Device Story

Diode laser system for hair removal; utilizes selective photothermal effect; long pulse width laser penetrates epidermis to hair follicle; melanin absorbs laser energy; follicle destruction prevents hair regeneration. Features sapphire dynamic cooling device; water-cooled handpiece dissipates heat from light source and TEC block. Operated by clinician in dermatology/clinical setting. User interface via LCD color touchscreen. Output: laser energy delivered to skin. Benefits: permanent hair reduction or temporary hair reduction depending on mode.

Clinical Evidence

Bench testing only. Includes software verification and validation, power output testing, electromagnetic compatibility (IEC 60601-1-2), electrical safety (ANSI AAMI ES60601-1, IEC 60601-1, IEC 60601-2-22, IEC 60825-1), and biocompatibility assessment (ISO 10993-1).

Technological Characteristics

GaAlAs diode laser array; wavelengths 755nm, 810nm, 1064nm; sapphire contact cooling; TEC cooling system; Class IV laser; LCD touchscreen interface; non-sterile, reusable handpiece; electrical safety per IEC 60601-1, IEC 60601-1-2, IEC 60601-2-22, IEC 60825-1; biocompatible materials per ISO 10993-1.

Indications for Use

Indicated for temporary hair reduction (SHR mode) or permanent reduction in hair regrowth (HR/SHR modes) in patients of all skin types (Fitzpatrick I-VI), including tanned skin.

Regulatory Classification

Identification

(1) A carbon dioxide laser for use in general surgery and in dermatology is a laser device intended to cut, destroy, or remove tissue by light energy emitted by carbon dioxide.(2) An argon laser for use in dermatology is a laser device intended to destroy or coagulate tissue by light energy emitted by argon.

Predicate Devices

• Soprano Titanium (K222064)

Submission Summary (Full Text)

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July 30, 2023

Lotuxs Medtech (Suzhou) Co., Ltd. Na Wu Quality Manager Room301,303,304, Building6, Northwest Area of Nanopolis Suzhou,No.99 Jinjihu Avenue Suzhou Industrial Park, Suzhou, Jiangsu 215123 China

Re: K222862

Trade/Device Name: SILKPRO Titanium Diode Laser System SILKPRO-S20S-TWC Regulation Number: 21 CFR 878.4810 Regulation Name: Laser Surgical Instrument For Use In General And Plastic Surgery And In Dermatology Regulatory Class: Class II Product Code: GEX Dated: June 30, 2023 Received: June 30, 2023

Dear Na Wu:

We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.

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Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.

For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely.

# Jianting Wang -S

Jianting Wang Acting Assistant Director DHT4A: Division of General Surgery Devices OHT4: Office of Surgical and Infection Control Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health

Enclosure

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## Indications for Use

510(k) Number (if known) K222862

#### Device Name

SILKPRO Titanium Diode Laser System

Indications for Use (Describe)

The indications for use for the SILKPRO-S20S-TWC include:

The Super Hair Removal (SHR) Mode are intended for temporary hair reduction.

The indications for use for the SILKPRO-S20S-755A include:

The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term, stable reduction in the number of hairs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen.

Use on all skin types (Fitzpatrick L-VI), including tanned skin.(HR. SHR Modes)

The indications for use for the SILKPRO-S20S-810B include:

The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term. stable reduction in the number of airs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen.

Use on all skin types (Fitzpatrick I-VI), including tanned skin.(HR, and SHR Modes)

Type of Use (Select one or both, as applicable)

× Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

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## Section 5 - 510(k) Summary

## K22862 Date of Summary Preparation: September 15, 2022 Date of Modification: July 29, 2023

#### 1. Submitter's Identifications

Submitter's Name: Lotuxs Medtech (Suzhou) Co., Ltd. Address: Room301,303,304, Building6, Northwest Area of Nanopolis Suzhou, No.99 Jinjihu Avenue, Suzhou Industrial Park, Suzhou 215123, China Contact Person: Na Wu Contact Title: Quality Manager Contact Email Address: [e-mail] Telephone: [phone]

### 2. Correspondent's Identifications

Correspondent's Name: Lotuxs Medtech (Suzhou) Co., Ltd. Address: Room301,303,304, Building6, Northwest Area of Nanopolis Suzhou, No.99 Jinjihu Avenue, Suzhou Industrial Park, Suzhou 215123, China ZIP Code: 215123 Contact Person: Na Wu Contact Title: Quality Manager Contact E-mail Address: [e-mail] Telephone: [phone]

#### 3. Name of the Device

Device Classification Name: Laser surgical instrument for use in general and plastic surgery and in dermatology Product Name: Laser surgical instrument for use in general and plastic surgery and in dermatology Trade Name: SILKPRO Titanium Diode Laser System Model: SILKPRO-S20S-TWC, SILKPRO-S20S-755A, SILKPRO-S20S-810B. Classification Panel: General & Plastic Surgery Product Code: GEX Regulation Number: 21 CFR 878.4810 Device Classification: Class II

#### 4. The Predicate Devices

Primary Predicate device: K222064 Soprano Titanium

#### 5. Device Description

The working principle of SILKPRO Titanium Diode Laser System is selective

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photothermal effect. It uses its unique long pulse width laser to penetrate the epidermis to the hair follicle. The energy of the laser is preferentially absorbed by the melanin in the hair, so that the hair follicle produces high heat. Thereby destroying the structure of the hair follicle, making the hair lose the ability to regenerate, and achieving the purpose of hair removal. The treatment head adopts a uniquely designed sapphire dynamic cooling device.

SILKPRO Titanium Diode Laser System is a sophisticated high-tech laser equipment. The machine includes water cooling system. Water flows through the pipes in the handpiece to dissipate heat for the light source and the TEC water cooling block , which is used to cool the skin tissue during treatment.

#### 6. Intended Use of Device

The indications for use for the SILKPRO-S20S-TWC include:

The Super Hair Removal (SHR) Mode are intended for temporary hair reduction.

The indications for use for the SILKPRO-S20S-755A include:

The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term, stable reduction in the number of hairs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen.

Use on all skin types (Fitzpatrick L-VI), including tanned skin.(HR. SHR Modes)

The indications for use for the SILKPRO-S20S-810B include:

The Hair Removal (HR) and Super Hair Removal (SHR) Mode are intended for permanent reduction in hair regrowth defined as a long term. stable reduction in the number of airs re-growing when measured at 6,9 and 12 months after the completion of a treatment regimen.

Use on all skin types (Fitzpatrick I-VI), including tanned skin.(HR, and SHR Modes)

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# 7. Summary of Substantial Equivalence

# Table 1

| | Proposed device | Primary predicate device | Comparison |
|---------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------|
| 510k Number | K222862 | K222064 | -------- |
| Product Code | GEX | GEX, ILY | Same |
| Proprietary Name | SILKPRO Titanium Diode Laser System | Soprano Titanium | -------- |
| Model | SILKPRO-S20S-TWC,<br>SILKPRO-S20S-755A,<br>SILKPRO-S20S-810B, | / | -------- |
| Manufacturer | Lotuxs Medtech (Suzhou) Co., Ltd. | Alma Lasers Inc. | -------- |
| Regulation No. | 21 CFR 878.4810 | 21 CFR 878.4810 | Same |
| Regulatory Class | Class II | Class II | Same |
| Controls | Footswitch or handpiece | Footswitch or handpiece | Same |
| Indications for use | The indications for use for the<br>SILKPRO-S20S-TWC include:<br>The super hair removal (SHR) Mode are<br>intended for temporary hair reduction.<br>The indications for use for the<br>SILKPRO-S20S-755A include:<br>The hair removal (HR) and super hair<br>removal (SHR) Mode are intended for<br>permanent reduction in hair regrowth | The Soprano Titanium diode laser module is<br>intended for use in dermatology procedures<br>requiring coagulation. The indications for<br>use for the Soprano Trio diode laser module<br>include:<br>The Super Hair Removal ( SHR ) Mode is<br>intended for temporary hair reduction.<br>The Soprano Trio diode laser module HR<br>mode is intended for use in dermatology | Same |

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| defined as a long term, stable reduction in<br>the number of hairs re-growing when<br>measured at 6,9 and 12 months after the<br>completion of a treatment regimen.<br>Use on all skin types (Fitzpatrick L-VI),<br>including tanned skin.(HR. SHR Modes)<br>The indications for use for the<br>SILKPRO-S20S-810B include:<br>The hair removal (HR) and super hair<br>removal (SHR) Mode are intended for<br>permanent reduction in hair regrowth<br>defined as a long term. stable reduction in<br>the number of hairs re-growing when<br>measured at 6,9 and 12 months after the<br>completion of a treatment regimen.<br>Use on all skin types (Fitzpatrick I-VI),<br>including tanned skin.(HR, and SHR<br>Modes) | procedures requiring coagulation indications<br>for use for the Soprano Trio diode laser HR<br>module include : Benign vascular and<br>vascular dependent lesions.<br>810nm Applicator<br>Soprano Titanium 810 nm applicator<br>intended use and indications for use:<br>The indications for use for the 810nm<br>Modified Diode Laser Module 2 cm 2<br>include:<br>The Hair Removal ( HR ) and Super Hair<br>Removal ( SHR ) Mode are intended for<br>permanent reduction in hair regrowth<br>defined as a long term , stable reduction in<br>the number of hairs re-growing when<br>measured at 6 , 9 and 12 months after the<br>completion of a treatment regimen<br>Use on all skin types ( Fitzpatrick I-VI ) ,<br>including tanned skin . HR , and SHR<br>Modes.<br>755nm Applicator<br>Soprano Titanium 755 nm applicator<br>intended use and indications for use:<br>The indications for use for the 755nm Diode<br>Laser Module include:<br>The Hair Removal ( HR ) and Super Hair |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| | Removal ( SHR ) Mode are intended for permanent reduction in hair regrowth defined as a long term, stable reduction in the number of hairs re-growing when measured at 6, 9 and 12 months after the completion of a treatment regimen Use on all skin types (Fitzpatrick I-VI), including tanned skin . HR, and SHR Modes. NIR Applicator: NIR Applicator intended use and indications for use: The Alma Lasers NIR Modules intended use is to emit energy in the near infrared ( NIR ) spectrum to provide topical heating. The indications for use for NIR Modules are: Elevating the tissue temperature for the temporary relief of minor muscle pain and joint pain and stiffness . The temporary relief of minor joint pain associated with arthritis The temporary increase in local circulation where applied , and The relaxation of muscles may also help muscle spasms , minor sprains and strains , and minor |
|--|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|--|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| | | muscular back pain. | |
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| Operating theory | The working principle of SILKPRO Titanium Diode Laser System is selective photothermal effect. It uses its unique long pulse width laser to penetrate the epidermis to the hair follicle. The energy of the laser is preferentially absorbed by the melanin in the hair, so that the hair follicle produces high heat. Thereby destroying the structure of the hair follicle, making the hair lose the ability to regenerate, and achieving the purpose of hair removal. The treatment head adopts a uniquely designed sapphire dynamic cooling device. | The Soprano trio Diode Laser Module is a surgical device, which is intended for hair removal, permanent hair reduction on all skin types (Fitzpatrick skin type I-VI); The working principle of Soprano trio Diode Laser Module is selective photothermal effect. It uses its unique long pulse width laser to penetrate the epidermis to the hair follicle. The energy of the laser is preferentially absorbed by the melanin in the hair, so that the hair follicle produces high heat. Thereby destroying the structure of the hair follicle, making the hair lose the ability to regenerate, and achieving the purpose of hair removal. The treatment head adopts a uniquely designed sapphire dynamic cooling device. | Same |
| Laser Type | GaAlAs Diode Laser array | GaAlAs Diode Laser array | Same |
| Handpiece<br>tipmaterial | Sapphire | Sapphire | Same |
| Wavelength | SILKPRO-S20S-TWC:<br>755nm/810nm/1064nm Three in one<br>combination wavelength | 755nm/810nm/1064nm Three in one<br>combination wavelength | Same |
| | SILKPRO-S20S-755A:755 nm | 755 nm | Same |
| | SILKPRO-S20S-810B:810 nm | 810 nm | Same |
| | SILKPRO-S20S-TWC: 10×40 mm² | Soprano Trio: 4cm² | Same |
| Spot size | SILKPRO-S20S-755A: 12×12 mm² | 755nm Applicator: 1.5 cm² | Similar<br>The spot size of<br>the proposed<br>device is<br>similar to the<br>predicate<br>device, so this<br>definition does<br>not affect the<br>safety and<br>effectiveness. |
| | SILKPRO-S20S-810B: 10×20mm² | 810nm Applicator :2cm² | Same |
| | SILKPRO-S20S-TWC: Up to 200 ms | Soprano Trio: Up to 200 ms | Same |
| Pulse Width (ms) | SILKPRO-S20S-755A : 3.3-200 ms | 755nm Applicator: 3.3-200 ms | Same |
| | SILKPRO-S20S-810B: 3.3-200 ms | 810nm Applicator : 3.3-200 ms | Same |
| Pulse Repetition<br>Rate | SILKPRO-S20S-TWC:<br>SHR: Up to 10 Hz | Soprano Trio:<br>HR: Up to10 Hz<br>SHR: Up to10 Hz | Same |
| | SILKPRO-S20S-755A: | 755nm Applicator: | Same |
| | | | |
| | HR: 0.5-3Hz<br>SHR: 5-10Hz | HR: 0.5-3 Hz<br>SHR: 5-10 Hz | |
| | SILKPRO-S20S-810B:<br>HR: 0.5-3Hz<br>SHR: 5-10Hz | 810nm Applicator:<br>HR: 0.5-3 Hz<br>SHR: 5-10 Hz | Same |
| Energy Density<br>(Fluence) | SILKPRO-S20S-TWC<br>SHR: 2-8 J/cm² | Soprano Trio:<br>HR:2- 120 J/ cm²<br>SHR: 2-20 J/ cm² | Same |
| | SILKPRO-S20S-755A<br>HR: Up to 120J/ cm²<br>SHR: Up to 20J/ cm² | 755nm Applicator:<br>HR: Up to 120J/ cm²<br>SHR: Up to 20J/ cm² | Same |
| | SILKPRO-S20S-810B<br>HR: 2-120J/ cm²<br>SHR: 2-20J/ cm² | 810nm Applicator:<br>HR:2-120J/ cm²<br>SHR:2-20J/ cm² | Same |
| User Interface | LCD Color Touchscreen | LCD Color Touchscreen | Same |
| Laser classification | Class IV | Class IV | Same |
| Cooling system | TEC | TEC | Same |
| Software | Yes | Yes | Same |
| Delivery Devices<br>(How supplied) | Non -Sterile. reusable. cleanable | Non -Sterile. reusable. cleanable | Same |
| Electromagnetic<br>compatibility and<br>electrical safety<br>compliance | IEC 60601-1 | IEC 60601-1…