Vacuum Roller RF Slimming Device for Medical Use (PZ-FY66-01, PZ-FY66-02)
K261582 · Zhengzhou PZ Laser Slim Technology Co., Ltd. · NUV · Aug 28, 2026 · General, Plastic Surgery
Device Facts
Record ID
K261582
Device Name
Vacuum Roller RF Slimming Device for Medical Use (PZ-FY66-01, PZ-FY66-02)
Applicant
Zhengzhou PZ Laser Slim Technology Co., Ltd.
Product Code
NUV · General, Plastic Surgery
Decision Date
Aug 28, 2026
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4810
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Vacuum Roller RF Slimming Device for Medical Use is indicated for the relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation, temporary reduction in the appearance of cellulite, and for temporary reduction of thighs circumferences.
Device Story
Vacuum Roller RF Slimming Device (PZ-FY66-01, PZ-FY66-02) is a prescription-use medical device for body contouring and muscle therapy. It utilizes four therapeutic modalities: radiofrequency (RF), infrared (IR) light, vacuum suction, and mechanical roller massage. The device consists of a host unit with a display, control board, and power supply, connected to a treatment handle and head. A microcontroller manages the RF power, IR emission, vacuum pressure, and roller movement based on the selected treatment mode. The operator selects a mode, and the treatment head is applied to the patient's skin. The device provides five modes combining these technologies to target muscle aches, spasms, circulation, cellulite, and thigh circumference. The system includes safety features like an emergency stop switch and fuse protection. It is intended for use in clinical settings by trained professionals to provide therapeutic benefits through localized heating and mechanical stimulation.
Clinical Evidence
No clinical study is included in this submission. Substantial equivalence is supported by bench testing, including electrical safety (IEC 60601-1), electromagnetic compatibility (IEC 60601-1-2), high-frequency surgical equipment safety (IEC 60601-2-2), and biocompatibility (ISO 10993-5, -10, -23).
Technological Characteristics
System utilizes RF (1MHz), IR (850nm), vacuum (pulsed, max -80Kpa), and mechanical rollers. Power supply: 100-240V, 50/60Hz. Components include host unit, treatment handle, and treatment heads. Materials evaluated for biocompatibility per ISO 10993. Software life cycle processes comply with IEC 62304. Safety standards: IEC 60601-1, IEC 60601-1-2, IEC 60601-2-2, IEC TS 60601-4-2.
Indications for Use
Indicated for adult population requiring temporary relief of minor muscle aches, pain, and muscle spasms; temporary improvement of local blood circulation; temporary reduction in cellulite appearance; and temporary reduction of thigh circumference. Utilizes RF, IR, vacuum, and mechanical roller massage in five treatment modes.
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.
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FDA U.S. FOOD & DRUG
ADMINISTRATION
August 28, 2026
Zhengzhou PZ Laser Slim Technology Co., Ltd.
Junmei Li
RA
3rd Floor, Bldg. 1, #101 Jinbai Rd., High-Tech Development Z
Zhengzhou, Henan 450001
China
Re: K261582
Trade/Device Name: Vacuum Roller RF Slimming Device for Medical Use (PZ-FY66-01, PZ-FY66-02)
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: NUV, ISA, PBX
Dated: May 12, 2026
Received: May 13, 2026
Dear Junmei Li:
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 (the 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 available 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.
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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K261582 - Junmei Li
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Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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 (reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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-devices/medical-device-safety/medical-device-reporting-mdr-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/medical-devices/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-devices/device-advice-comprehensive-regulatory-
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K261582 - Junmei Li
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assistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
YAN FU-S
Digitally signed by YAN FU -
S
Date: 2026.08.28 10:34:37
-04'00'
for Tanisha Hithe
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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DEPARTMENT OF HEALTH AND HUMAN SERVICES
Food and Drug Administration
# **Indications for Use**
Form Approved: OMB No. 0910-0120
Expiration Date: 07/31/2026
See PRA Statement below.
510(k) Number (if known)
K261582
Device Name
Vacuum Roller RF Slimming Device for Medical Use (PZ-FY66-01, PZ-FY66-02)
Indications for Use (Describe)
The Vacuum Roller RF Slimming Device for Medical Use incorporates four therapeutic technologies: radiofrequency (RF), infrared (IR), vacuum, and mechanical roller massage. The device provides the following treatment modes:
- Mode 1 - Massage & IR Therapy: Vacuum + IR + Roller Massage
- Mode 2 - RF Massage Therapy: RF + Vacuum + Roller Massage
- Mode 3 - Vacuum/IR Body Contouring: Vacuum + IR
- Mode 4 - Massage Therapy: Vacuum + Roller Massage
- Mode 5 - IR Massage Therapy: IR + Roller Massage
The device is indicated for the following uses:
- Modes 1, 2, 5 are indicated for the temporary relief of minor muscle aches and pain.
- Modes 1, 2, 5 are indicated for the temporary relief of muscle spasm.
- Modes 1, 2, 5 are indicated for the temporary improvement of local blood circulation.
- Modes 1, 2, 3, 4 are indicated for the temporary reduction in the appearance of cellulite.
- Modes 1, 3, 5 are indicated for the temporary reduction of thigh circumference.
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)
**CONTINUE ON A SEPARATE PAGE IF NEEDED.**
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**\*DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.\***
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FORM FDA 3881 (8/23)
Page 1 of 1
PSC Publishing Services (301) 443-6740 EF
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510(k)Summary
# 510(k Summary K261582
This 510(k) Summary of 510(k) safety and effectiveness information is being submitted in accordance with requirements of Title 21, CFR Section 807.92.
The assigned 510(k) Number: K261582
# 1 Date of Preparation
08/26/2026
# 2 Sponsor
Zhengzhou PZ Laser Slim Technology Co., Ltd.
3rd Floor, Building 1, No.101 Jinbai Road, High-tech Development Zone, 450001 Zhengzhou City, Henan Province, PEOPLE'S REPUBLIC OF CHINA
Contact Person: Junmei Li
Position: RA
Tel: +86-18403935976
Email: 1055078817@qq.com
# 3 Submission Correspondent
Ms. Junmei Li
Zhengzhou PZ Laser Slim Technology Co., Ltd.
3rd Floor, Building 1, No.101 Jinbai Road, High-tech Development Zone, 450001 Zhengzhou City, Henan Province, PEOPLE'S REPUBLIC OF CHINA
Tel: +86-18403935976
Email: 1055078817@qq.com
# 4 Identification of Subject Device
Trade Name: Vacuum Roller RF Slimming Device for Medical Use (PZ-FY66-01, PZ-FY66-02)
Common Name: Massager, Vacuum, Light induced heating
Model(s): PZ-FY66-01, PZ-FY66-02
Regulatory Information:
Classification Name: Massager, Vacuum, Light induced heating
Classification: II
Product Code: NUV, ISA,PBX
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510(k)Summary
Regulation Number: 21 CFR 878.4810
Review Panel: Physical Medicine, General & Plastic Surgery
Intended Use:
The Vacuum Roller RF Slimming Device for Medical Use is indicated for the relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation, temporary reduction in the appearance of cellulite, and for temporary reduction of thighs circumferences.
Indication for Use:
"The Vacuum Roller RF Slimming Device for Medical Use incorporates four therapeutic technologies: radiofrequency (RF), infrared (IR), vacuum, and mechanical roller massage. The device provides the following treatment modes:
- Mode 1 - Massage & IR Therapy: Vacuum + IR + Roller Massage
- Mode 2 - RF Massage Therapy: RF + Vacuum + Roller Massage
- Mode 3 - Vacuum/IR Body Contouring: Vacuum + IR
- Mode 4 - Massage Therapy: Vacuum + Roller Massage
- Mode 5 - IR Massage Therapy: IR + Roller Massage
The device is indicated for the following uses:
- Modes 1, 2, 5 are indicated for the temporary relief of minor muscle aches and pain.
- Modes 1, 2, 5 are indicated for the temporary relief of muscle spasm.
- Modes 1, 2, 5 are indicated for the temporary improvement of local blood circulation.
- Modes 1, 2, 3, 4 are indicated for the temporary reduction in the appearance of cellulite.
- Modes 1, 3, 5 are indicated for the temporary reduction of thigh circumference."
### 5 Device Description
The Vacuum Roller RF Slimming Device for Medical Use controls the RF power supply through the micro controller. After the channel is selected, the electrode is controlled by the treatment handle. Finally, it is applied to the human body. And data is exchanged between the micro controller and the treatment handle.
The micro controller controls the gas path adjustment circuit. After the channel selection, infrared control, temperature control, roller control and treatment head recognition are completed through the treatment handle. Finally, it is applied to the human body. And data is exchanged between the micro controller and the treatment handle.
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510(k)Summary

The system principle block is shown in Fig. 5-1.

Fig. 5-1 System principle block
The model of the Vacuum Roller RF Slimming Device for Medical Use: PZ-FY66-01, PZ-FY66-02
The subject device includes the following components:
Table 5-1 Main Components of Subject Device
| Components | | Function Description |
| --- | --- | --- |
| Host | Power supply | 100-240V~ 50/60Hz |
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510(k)Summary
| | switching power supply | Convert the input voltage into the required output voltage to meet the needs of different electronic devices. |
| --- | --- | --- |
| | display screen | For human and machine interaction. |
| Power cord | A connection tool that transfers electricity from a power source to an electrical device, allowing the device to function properly. | |
| Treatment handle | Connect the host and the treatment head to realize the infrared control, temperature control, roller control and treatment head recognition function. | |
| Treatment head | The electrical signal is converted into electrical energy to act on the patient. | |
| Pendant | Suspended treatment handle. | |
| Socket | Connect the main unit and treatment handle. | |
| Caster | Installed at the bottom of the device to increase the mobility and flexibility of the device. | |
| Main unit | Main unit includes RF power supply, switching power supply, control board and display screen. The switching power supply can convert the input voltage into the required output voltage to meet the needs of different electronic devices. | |
| Key switch | Turn the device on/off. | |
| EMG stop switch | Emergency stop device operation. | |
| Fuse | Overload protection. | |
| Power input sock | Connector for connecting the power cord to the device | |
| Filter | Remove unwanted frequency components from a signal while retaining the desired frequency components. | |
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510(k)Summary
| DC contactor | Connect or disconnect the DC main circuit with load. |
| --- | --- |
## 6 Identification of Predicate Device
Predicate Device1
510(k) Number: K161892
Product Name: Slimming Treatment Device
Manufacturer: Beijing Honkon Technologies Co., Ltd
Predicate Device 2
510(k) Number: K122579
Product Name: VelaShape
Manufacturer: Syneron Medical, Limited
## 7 Non-Clinical Test Conclusion
Non-clinical tests were conducted to verify that the subject device met all design specifications as was Substantially Equivalent (SE) to the predicate device. The test results demonstrated that the subject device complies with the following standards:
IEC 60601-1:2005+A1:2012+A2:2020, Medical Electrical Equipment - Part 1: General Requirements For Basic Safety And Essential Performance;
IEC 60601-1-2:2014+A1:2020, Medical electrical equipment- Part 1-2: General requirements for basic safety and essential performance- Collateral standard: Electromagnetic compatibility- Requirements and tests;
IEC 60601-2-2 : 2017+A1:2023Medical electrical equipment - Part 2-2: Particular requirements for the basic safety and essential performance of high frequency surgical equipment and high frequency surgical accessories
IEC TS 60601-4-2:2024 Medical electrical equipment - Part 4-2: Guidance and interpretation - Electromagnetic immunity: performance of medical electrical equipment and medical electrical systems
IEC 62304:2015, Medical device software – Software life cycle processes;
ISO 14971:2019, Medical devices – Application of risk management to medical devices;
ISO 10993-1:2020, Biological evaluation of medical devices – Part 1: Evaluation and testing within a risk management process;
ISO 10993-5:2009, Biological Evaluation of Medical Device, Part 5-Tests for Vitro cytotoxicity;
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510(k)Summary
ISO 10993-10:2021, Biological Evaluation of Medical Device, Part 10-Test for irritation and skin sensitization;
ISO 10993-23:2021, Biological evaluation of medical devices - Part 23: Tests for irritation;
### 8 Clinical Test Conclusion
No clinical study is included in this submission.
### 9 Substantially Equivalent (SE) Comparison
Table 9-1 General Comparison
| Items | Subject Device K261582 | Predicate Device 1: K161892 | Predicate Device 2: K122579 | Analysis |
| --- | --- | --- | --- | --- |
| Manufacturer | Zhengzhou PZ Laser Slim Technology Co., Ltd. | Beijing Honkon Technologies Co., Ltd | Syneron Medical, Limited | N/A |
| Regulation numbers | 21 CFR 878.4810 | 21 CFR 878.4810 | 21 CFR 878.4810 | Same |
| Product Code | PBX, NUV, ISA | NUV, ISA | NUV | Analysis 1 |
| Regulatory Class | Class II | Class II | Class II | Same |
| Clinical Use | Prescription use | Prescription use | Prescription use | Same |
| Intended use | The Vacuum Roller RF Slimming Device for Medical Use is indicated for the relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation, temporary reduction in the appearance of cellulite, and for temporary reduction of thighs circumferences. | The HONKON-Slimming I+/HONKON-Slimming III+ are indicated for the relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation, temporary reduction in the appearance of cellulite, and for temporary reduction of thighs circumferences. | The VelaShape is indicated for the relief of minor muscle aches and pain, relief of muscle spasm, temporary improvement of local blood circulation, temporary reduction in the appearance of cellulite, and for temporary reduction of thighs circumferences. | Same |
| Indication For Use | "The Vacuum Roller RF Slimming Device for Medical Use incorporates four therapeutic technologies: | | | |
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510(k)Summary
| | radiofrequency (RF), infrared (IR), vacuum, and mechanical roller massage. The device provides the following treatment modes: • Mode 1 - Massage & IR Therapy: Vacuum + IR + Roller Massage • Mode 2 - RF Massage Therapy: RF + Vacuum + Roller Massage • Mode 3 - Vacuum/IR Body Contouring: Vacuum + IR • Mode 4 - Massage Therapy: Vacuum + Roller Massage • Mode 5 - IR Massage Therapy: IR + Roller Massage The device is indicated for the following uses: • Modes 1, 2, 5 are indicated for the temporary relief of minor muscle aches and pain. • Modes 1, 2, 5 are indicated for the temporary relief of muscle spasm. • Modes 1, 2, 5 are indicated for the temporary improvement of local blood circulation. • Modes 1, 2, 3, 4 are indicated for the temporary reduction in the appearance of cellulite. • Modes 1, 3, 5 are indicated for the temporary reduction of thigh circumference.” | | | |
| --- | --- | --- | --- | --- |
| Target Population | Adult Population which requires treatment as specified in the indication for | Adult Population which requires treatment as specified in the | Adult Population which requires treatment as specified in the indication | Same |
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510(k)Summary
| | use | indication for use | for use | |
| --- | --- | --- | --- | --- |
| Anatomical Sites | Body parts requiring treatment as specified in the indication for use | Body parts requiring treatment as specified in the indication for use | Body parts requiring treatment as specified in the indication for use | Same |
# Analysis 1:
Although the product code for the predicate device is not explicitly listed as including "PBX" in its publicly available 510(k) Summary, the predicate device actually incorporates the designs and functions associated with that code - specifically PBX (Massager, Vacuum, Radiofrequency-Induced Heat). Therefore, the subject device and the predicate device are equivalent in terms of technological characteristics and intended functionality. This difference will not affect the safety and efficacy of the subject device.
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510(k)Summary
Table 9-2 Performance Comparison
| Items | Subject Device: K261582 | Predicate device 1: K161892 | Predicate Device 2 : K122579 | Analysis |
| --- | --- | --- | --- | --- |
| RF Output Energy | Up to 220W | 40-400W | Up to 150W | Analysis 1 |
| RF Output Frequency | 1MHz | 1MHz | N.A | Same |
| Max. RF output energy density | Large treatment head: 6.41W/cm² Adsorption treatment head: 10.01W/cm² Radio frequency treatment head: 9.29W/cm² | XF-I+: 12.14W/cm² XF-VII+: 27W/cm² | 115.38W/cm² 6.67W/cm² 12 W/cm² 9.38W/cm² | Analysis 2 |
| Infrared energy | Large treatment handle: Max. 6W Medium treatment handle: Max. 4W | XF-I+ & XF-VII+: I: 5W II : 7W III : 8W IV : 9W V : 10W | Up to 3.3W | Analysis 3 |
| Infrared wavelengths | 850nm | 700-2000nm | 850nm | Analysis 4 |
| Max. IR output energy density | Large treatment handle: 0.17W/cm² Adsorption treatment head: 0.18W/cm² Radio frequency treatment head: 0.63W/cm² | XF-I+: 0.30W/cm² XF-VII+: 0.67W/cm² | 2.54W/cm² 0.44W/cm² 0.26W/cm² 0.21W/cm² | Analysis 5 |
| Vacuum | Pulsed (Max.-80Kpa(-0.08Mpa)) | Pulsed (-0.08Mpa -0.01Mpa) | Pulsed | Analysis 6 |
| Mechanical Massage | Yes | Yes | N.A. | Same |
| Treatment Area | Large treatment head: 3433mm² | XF-I+: 3294 mm² | VContour Applicator: Small Cover Medium Cover | Analysis 7 |
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510(k)Summary
| | Adsorption head: 2198mm² Radio frequency treatment head: 634mm² Rollerball treatment handle: 32448mm² | XF-VII+: 1482mm² | Large Cover: 130 mm² 750 mm² 1250 mm² VSmooth Applicator: 1600 mm² | |
| --- | --- | --- | --- | --- |
| Weight | 60KG | 48KG | 20kg / 44lbs | Analysis 8 |
| Size (mm) L*W*H | 809mm*809mm*1392mm | 434mm * 531mm *1354mm (Slimming I+) 531mm * 441mm *1716mm (Slimming III+) | 380* 490 *1320 | Analysis 9 |
| Power supply | AC100V-240V; 50Hz/60Hz | 110V, 60HZ | 110VAC; 50Hz; | Analysis 10 |
| Patient Contact Material | Handpiece Suction roller | Handpiece Suction roller | Handpiece Suction roller | Same |
# Analysis 1:
Compared with predicate device, although there is a difference but the reasons are as follows. Although there are differences in the "RF output energy" between the subject device and the predicate device, it was all tested and is compliant with IEC 60601-2-2. And the High "RF output energy" within the range of the predicate device's.
Therefore the difference doesn't impact essential performance, basic safety or substantial equivalence.
# Analysis 2:
Compared with predicate device, although there is a difference but the reasons are as follows. Although there are differences in the "Max. RF output energy density" between the subject device and the predicate device. And the "Max. RF output energy density" within the range of the predicate device's. Therefore the difference doesn't impact essential performance, basic safety or substantial equivalence.
# Analysis 3:
Compared with predicate device, although there is a difference but the reasons are as follows. Although there are differences in the "Infrared energy" between the subject
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510(k)Summary
device and the predicate device. And the "Infrared energy" within the range of the predicate device's. Therefore the difference doesn't impact essential performance, basic safety or substantial equivalence.
# Analysis 4:
Compared with predicate device, although there is a difference but the reasons are as follows. Although the "Infrared wavelengths" of the subject device is different than in the predicate device, the "Infrared wavelengths" within the range of the predicate device's. Therefore the difference doesn't impact essential performance, basic safety or substantial equivalence.
# Analysis 5:
The subject device maximum IR output energy density ranges from a lower limit of 0.17 W/cm² to an upper limit of 0.63 W/cm². The upper limit of the subject device (0.63 W/cm²) falls within the range of the predicate device's upper limit, while the lower limit (0.17 W/cm²) is similar to that of predicate device 2 (0.21 W/cm²); the slight difference of 0.04 W/cm² falls within the margin of error(±20%) and does not impact the safety or effectiveness of the subject device. Therefore, the difference in maximum IR output energy density does not affect the safety or effectiveness of the subject device.
# Analysis 6:
Compared with predicate device, although there is a difference but the reasons are as follows. Although the "Vacuum" of the subject device is different than in the predicate device, the high "Vacuum" within the range of the predicate device's.
Therefore the difference doesn't impact essential performance, basic safety or substantial equivalence.
# Analysis 7:
The lower and upper limits for the IR Treatment Area of the subject device are 634mm² and 3433mm², respectively. The upper limit of the subject device (3433 mm²) is similar to that of predicate device 1, and the lower limit (634 mm²) falls within the range of predicate device 2. Therefore, the differences in IR Treatment Area do not affect the safety and effectiveness of the subject device.
# Analysis 8:
Not identical. That difference does not generate a safety and effectiveness issue.
# Analysis 9:
Not identical. That difference does not generate a safety and effectiveness issue.
# Analysis 10:
Not identical. The subject device provides a different "Power supply" than the predicate device. Electrical safety testing and EMC testing have been performed for the subject device. Risk analysis have also been performed to support proof of safety
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510(k)Summary
and effectiveness of the subject device. This difference does not raise new questions of safety and effectiveness compared to the predicate devices.
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510(k)Summary
Table 9-3 Safety Comparison
| Item | Subject Device | Predicate Device1,2 | Remark |
| --- | --- | --- | --- |
| Electrical Safety | Comply with IEC 60601-1 | Comply with IEC 60601-1 | SE |
| EMC | Comply with IEC 60601-1-2 | Comply with IEC 60601-1-2 | SE |
| | Comply with IEC TS 60601-4-2 | / | |
| RF Safety | Comply with IEC 60601-2-2 | Comply with IEC 60601-2-2 | SE |
| Biocompatibility | No toxicity (ISO 10993-5) | Cytotoxicity No toxicity (ISO 10993-5) | SE |
| | Applied sample did not induce irritation to skin. (ISO 10993-10) | Irritation Applied sample did not induce irritation to skin. (ISO 10993-10) | SE |
| | The test article showed no signification evidence of causing skin sensitization in the New Zealand white rabbits. (ISO 10993-23) | Sensitization The test article showed no signification evidence of causing skin sensitization in the guinea pig. (ISO 10993-10) | SE |
# Analysis
The subject device is substantially equivalent to the predicate devices. Based on the nonclinical tests performed, the subject device is as safe, as effective, and performs as well as the legally marketed predicate devices.
# 10 Substantially Equivalency Conclusion
Based on the comparison and analysis above, the subject device is determined to be Substantially Equivalent (SE) to the predicate devices K161892 and K122579.
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Learn the FDA Browser
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.