K232965 · Shenzhen Ruiyi Business Technology Co., Ltd. · IRP · Nov 20, 2024 · Physical Medicine
Device Facts
Record ID
K232965
Device Name
Leg Massager (Models:RP-ALM070H, RP-ALM071H)
Applicant
Shenzhen Ruiyi Business Technology Co., Ltd.
Product Code
IRP · Physical Medicine
Decision Date
Nov 20, 2024
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5650
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Leg Massager (Models:RP-ALM070H, RP-ALM071H) is intended for home to temporarily relieve minor muscle aches and/or pains, and to temporarily increase circulation to the treated areas in people who are in good health.
Device Story
Leg Massager (Models: RP-ALM070H, RP-ALM071H) is a home-use powered inflatable tube massager. System consists of air pump, microprocessor, sensors, and inflatable sleeves connected via hoses. Device performs sequential compression massage from distal (limb end) to proximal (body center) to improve circulation and relieve muscle aches. User selects from multiple massage modes (combining/separate) and adjusts pressure (0-240mmHg) via touch screen interface. Safety features include manual pause/stop functionality. Device operates on 100-240V AC power. Healthcare providers or patients use the device to provide therapeutic compression; output is physical massage, which helps patients relax and temporarily increases local circulation.
Clinical Evidence
Bench testing only. Device performance validated against electrical safety standards (ES 60601-1, IEC 60601-1-2, IEC 60601-1-11) and biocompatibility standards (ISO 10993-5, ISO 10993-10). No clinical data presented.
Technological Characteristics
Powered inflatable tube massager; molded ABS enclosure; nylon/polyurethane laminate sleeves. Sequential compression via compressor and valve system. Pressure range 0-240mmHg; inflation 3-30s; deflation 1-5s. Microprocessor-controlled. Standards: ES 60601-1, IEC 60601-1-2, IEC 60601-1-11, ISO 10993-5, ISO 10993-10. Non-sterile.
Indications for Use
Indicated for healthy individuals for temporary relief of minor muscle aches/pains and temporary increase in circulation to treated areas.
Regulatory Classification
Identification
A powered inflatable tube massager is a powered device intended for medical purposes, such as to relieve minor muscle aches and pains and to increase circulation. It simulates kneading and stroking of tissues with the hands by use of an inflatable pressure cuff.
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November 20, 2024
Shenzhen Ruiyi Business Technology Co., Ltd. % Libray Zhang Official Correspondent Shanghai Spica Management Consulting Co., Ltd. 609 Room, No.133 Shengang Avenue, Pudong New District Shanghai. 201306 China
Re: K232965
Trade/Device Name: Leg Massager (Models: RP-ALM070H, RP-ALM071H) Regulation Number: 21 CFR 890.5650 Regulation Name: Powered Inflatable Tube Massager Regulatory Class: Class II Product Code: IRP. IRT Dated: September 30, 2024 Received: September 30, 2024
Dear Libray Zhang:
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.
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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 System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 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-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 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-device-advicecomprehensive-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-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-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-regulatory
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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,
# Heather L. Dean -S
Heather Dean, PhD Assistant Director, Acute Injury Devices Team DHT5B: Division of Neuromodulation and Physical Medicine Devices OHT5: Office of Neurological and Physical Medicine 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) K232965
Device Name
Leg Massager (Models:RP-ALM070H, RP-ALM071H)
Indications for Use (Describe)
Leg Massager (Models:RP-ALM070H, RP-ALM071H) is intended for home to temporarily relieve minor muscle aches and/or pains, and to temporarily increase circulation to the treated areas in people who are in good health.
Prescription Use (Part 21 CFR 801 Subpart D)
X Over-The-Counter Use (21 CFR 801 Subpart C)
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### K232965
| Type of Submission | Traditional |
|---------------------------|----------------------------------------------------------------------------------------------------------|
| Date Prepared | Jun 27, 2023 |
| Submission Sponsor | |
| Manufacturer Name | Shenzhen Ruiyi Business Technology Co., Ltd. |
| Address | Qianhai Complex A201, Qianwan Road 1, Qianhai<br>Shenzhen-Hong Kong Cooperation Zone,<br>Shenzhen, China |
| Tel | 86-18566621145 |
| Email | derric@renpho.com |
| Contact Person | derric bai |
| Application Correspondent | |
| Company Name | Shanghai Spica Management Consulting Co., Ltd. |
| Address | 609 Room, No.133 Shengang Avenue, Pudong New<br>District, Shanghai, China |
| Tel | 86-13020102321 |
| Email | Libray@spicagloble.com |
| Contact Person | Libray Zhang |
| Device Identification | |
| Trade Name | Leg Massager (Models:RP-ALM070H, RP-ALM071H) |
| Regulation Number | 21 CFR 890.5650 |
| Classification Name | Massager, Powered Inflatable Tube |
| Device Classification | Class II |
| Panel | Physical Medicine |
| Product Code | IRP |
| Previous Submissions | None |
#### Indications for Use
Leg Massager (Models:RP-ALM070H, RP-ALM071H) is intended for home to temporarily relieve minor muscle aches and/or pains, and to temporarily increase circulation to the treated areas in people who are in good health.
#### Device Description
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Leg Massager (Models:RP-ALM070H, RP-ALM071H) is consist of air pressure sensor, air pump, sleeves etc working together as one unit. The air pump is connected to the dedicated sleeves via a series of hoses. The compression massage direction is from limb end to body center by inflating the air chambers sequentially and then deflating as one cycle, the pressure can be adjusted to avoid any discomfort to the patient. The sleeve works under the action of sensor and microprocessor.
Leg Massager (Models:RP-ALM070H, RP-ALM071H), in medical market, it has a sequential squeezing from distal to proximal, thus help to improve circulation to the treated areas.
#### Predicate Device Information
| Sponsor | Shenzhen Dongjilian Electronics Co., Ltd. |
|-------------------|-------------------------------------------|
| Trade/Device Name | Air Compression Therapy Device |
| 510(K) number | K193354 |
| Regulation Number | 21 CFR 890.5650 |
| Sponsor | Medella Health Limited |
| Trade/Device Name | FLOWpresso |
| 510(K) number | K223729 |
| Regulation Number | 21 CFR 890.5650 |
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| Table 6A: Summary of Comparison | | |
|---------------------------------|--|--|
| | | |
| | Subject Device | Predicate Device | Differences Discussion |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device name | Leg Massager (Models:RP-ALM070H,<br>RP-ALM071H) | Air Compression Therapy Device | N/A |
| 510(k)<br>number | K232965 | K193354 | N/A |
| Manufacturer | Shenzhen Ruiyi Business Technology Co.,<br>Ltd. | Shenzhen Dongjilian Electronics<br>Co., Ltd. | N/A |
| Product<br>regulation | 21 CFR 890.5650 | 21 CFR 890.5650 | Same |
| Classification<br>name | Massager, Powered Inflatable Tube | Powered<br>Massager,<br>Inflatable<br>Tube | Same |
| Regulation<br>class | 2 | 2 | Same |
| Product code | IRP | IRP | Same |
| Indications for<br>use | Leg Massager (Models:RP-ALM070H,<br>RP-ALM071H) is intended for home to<br>temporarily relieve minor muscle<br>aches and/or pains, and to temporarily<br>increase circulation to the treated areas in<br>people who are in good health. | The Air Compression Therapy<br>Device is indicated for the<br>temporary relief of minor muscle<br>aches and pains and for<br>temporary increase in circulation<br>to the treated areas in people who<br>are in good health. The Air<br>Compression Therapy Device<br>simulates kneading and stroking<br>of tissues by using an inflatable<br>garment. | Same |
| Rx or OTC | OTC | OTC | Same |
| Pressure range | 0~240mmHg | 0~240mmHg | Same |
| Inflation Time | 3-30s | 3-30s | Same |
| Deflation<br>Time | 1-5s | 1-5s | Same |
| Treatment<br>time | 20 minutes | 20 minutes | Same |
| Standard | ES 60601-1;<br>IEC60601-1-2;<br>ISO 10993-5:<br>ISO 10993-10;<br>IEC 60601-1-11 | ES 60601-1;<br>IEC60601-1-2;<br>ISO 10993-5:<br>ISO 10993-10;<br>IEC 60601-1-11 | Same |
| Mode of<br>compression | Sequential | Sequential/ Peristaltic | Same |
| Power source | 100~240V 50/60Hz | 100~240V 50/60Hz | Same |
| Power<br>consumption | 24W | 12W | Similar |
| Size and | | | |
| appearance of | Thighs: | Leg: | |
| sleeves (leg<br>part) | One size: 11*16*24.9inch+8*33.5inch | One size: 73*26cm | |
| Photo | Image: RP-ALM070H RP-ALM071H | Image | Similar |
| Housing<br>materials | Molded ABS enclosure | Molded ABS enclosure | Same |
| Number of<br>chambers | 3 | 3 | Same |
| Work mode | RP-ALM070H:<br>Six models (3 combine massage modes and<br>3 Separate Massage Modes)<br>C1: Massage full legs.<br>C2: Massage feet and calves.<br>(It can be used individually, and don't need | Mode 1:<br>Starting with the foot chamber<br>and progressing up the thigh<br>chamber, each section<br>compresses and the pressure<br>gradually rises to the | Although the subject device provides 6 kinds of<br>work mode, the Mode F1, F2, F3, M1, M2, M3 are<br>the similar with predicate device (K193354), while<br>the other work modes of subject device just have<br> |
| to connect the air hose of thighs wraps.)<br>C3: Massage feet, calves, thighs by turn. It<br>will be turn off When you press the Button<br>C again.<br>T: Massages thighs<br>C: Massages calves<br>F : Massages feet. It will be turn off when<br>you press the Button S again.<br><br>RP-ALM071H:<br>Five models(3 combine massage modes and<br>2 Separate Massage Modes):<br>Combine 1: Massage feet and calves<br>Combine 2: Massage from calves to feet<br>Combine 3: Massage from feet to calves.<br>Press it again to turn off combine message<br>function.<br>F: Massage feet.<br>C: Massage calves. Press it again to turn off<br>separate massage function. | pre-determined air pressure level,<br>then decompresses and the<br>air pressure drops.<br>Once the thigh section<br>decompresses, the cycle begins<br>again.<br>Mode 1 follows this pressure<br>sequence:<br>Image: Diagram of pressure sequence<br><br>Mode 2:<br>Starting with the foot chamber<br>and progressing up the thigh,<br>each section compresses and the<br>pressure gradually rises to the<br>pre-determined air pressure level,<br>holds the air until the entire<br>garment is compressed.<br>All three sections then<br>decompress simultaneously and<br>the air pressure drops, then cycle<br>begins again.<br>Mode 2 follows this pressure | same under different work modes, so the difference<br>of pressure range would not raise adversely impact<br>on safety and effectiveness. | |
| | | sequence: | |
| | | | |
| | | Mode 3:<br>include two stage, stage 1: it<br>work according to the method of<br>mode 1, after the stage 1 is<br>completed, it go to stage<br>2(working according to the<br>method of mode 2) without<br>interruption time until finish the<br>stage 2, then enter next cycle<br>without interruption.<br>Model1 Mode2<br>The pressure sequence of mode 3<br>combines mode 1 and mode 2 | |
| Safety feature | Button on display allows user to stop or<br>pause therapy session at any time | Button on display allows user to<br>stop or pause therapy session at<br>any time | Same |
| Technology | Compressor and valve system which<br>sequentially inflates inflatable chambers | Compressor and valve system<br>which sequentially inflates<br>inflatable chambers | Same |
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| Operating<br>environment | Temperature: 5°C-40°C,<br>Humidity: 15%-90% | Temperature: 5°C -40°C,<br>Humidity: 5%-90%<br>non-condensing | Same |
|----------------------------------------------|--------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|---------|
| Transportation<br>and Storage<br>environment | Temperature: - 25°C~70°C<br>Humidity:15%-90% non condensing<br>Atmospheric Pressure:75kPa-106kPa | Temperature: -20°C~55°C;<br>Humidity: 5%-90% non<br>condensing<br>Atmospheric Pressure:75kPa-<br>106kPa | Similar |
# Table 6B: Summary of Comparison
| | Subject Device | Predicate Device | Differences Discussion |
|-------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Device name | Leg Massager (Models:RP-ALM070H,<br>RP-ALM071H) | FLOWpresso | N/A |
| 510(k) number | K232965 | K223729 | N/A |
| Manufacturer | Shenzhen Ruiyi Business Technology Co.,<br>Ltd. | Medella Health Ltd | N/A |
| Product<br>regulation | 21 CFR 890.5650 | 21 CFR…
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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.
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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.