K102281 · Inarex Corporation · JFB · Dec 22, 2010 · Physical Medicine
Device Facts
Record ID
K102281
Device Name
THERMAL MASSAGE BED, MODEL 2D-GX
Applicant
Inarex Corporation
Product Code
JFB · Physical Medicine
Decision Date
Dec 22, 2010
Decision
SESE
Submission Type
Special
Regulation
21 CFR 890.5880
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Thermal Massage Bed (2D-GX) is a device intended to provide patients with muscle relaxation therapy by delivering heat and soothing massage. Additionally, the infrared lamps provide topical heating for: -Temporary relief of minor muscle and joint pain, and stiffness -Temporary relief of minor joint pain associated with arthritis -Temporary increase in local circulation where applied -Relaxation of muscles
Device Story
Thermal massage bed provides muscle relaxation therapy via heat and mechanical massage. Device features upper mattress with motor-driven germanium ceramic rollers (horizontal/vertical movement) and lower mattress with heating panel. User operates device via remote control with FND screen/LED indicators; selects auto or custom modes (1-4). Sensors (photo, Hall effect) manage roller positioning and safety limits. System includes auxiliary handheld units for direct body heating. Device used in home or clinic settings by patients. Output consists of thermal energy and mechanical massage; healthcare providers/users monitor temperature/time settings to achieve therapeutic effects (40-45°C). Benefits include pain relief and muscle relaxation.
Clinical Evidence
Bench testing and limited clinical performance study. Study evaluated skin surface temperature elevation in 5 subjects using 30°C and 65°C settings. Results demonstrated the device elevates skin temperature to the therapeutic range (40-45°C) at the 65°C setting. 30°C setting provides comfort warming only. Safety verified via compliance with IEC 60601-1, IEC 60601-2-38, and IEC 60601-1-2.
Technological Characteristics
Thermal massage bed; 2,000mm x 700mm x 550mm; 75kg. Germanium ceramic rollers; heating film/panel. Energy source: 120V/230V, 50/60Hz, max 230VA. Sensing: Photo sensor (vertical), Hall effect sensor (horizontal). Temperature range: 30°C-65°C. MCU: Atmega32. Standards: IEC 60601-1, IEC 60601-2-38, IEC 60601-1-2.
Indications for Use
Indicated for patients seeking temporary relief of minor muscle/joint pain, stiffness, arthritis-related joint pain, increased local circulation, and muscle relaxation via heat and massage.
Regulatory Classification
Identification
A multi-function physical therapy table is a device intended for medical purposes that consists of a motorized table equipped to provide patients with heat, traction, and muscle relaxation therapy.
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# 510(k) Summary
[as required by 807.92(c)]
# A. 510K Number
K 10228 1
# B. 510(K) Preparer
Company name: Business Association Co., Ltd.
Address: Migun Techno world II C-dong 524, #533-1 Yongsan-dong Yuseong-gu, Daejeon, KOREA
### C. 510(K) Owner
INAREX CORPORATION Name of contact person: Heui-Jong Baek Address: 737-5 Ancheong-Dong Gwangsan-Gu, Gwangju, Korea Telephone Number: +82-62-952-1051 Fax Number: +82-62-952-1054
### D. Regulatory Information
1. Classification Name: Table, physical therapy, multi function
- 2. Common/Usual Name: Thermal massage bed
- 3. Proprietary Name: Thermal massage bed (2D-GX)
- 4. Classification /Product Code: Class II / JFB (21 CFR 890.5880)
#### E. Identification of the legally marketed device
- 1. Classification Name: Table, Physical therapy, Multi function
- 2. Common/Usual Name: Thermal massage bed
- 3. Proprietary Name: Thermal massage bed (2D-LX)
- 4. Classification /Product Code: Class II / JFB (21 CFR 890.5880)
- 5. 510(K) Number: K080554
#### F. Intended Use
Thermal Massage Bed (2D-GX) is a device intended to provide patients with muscle relaxation therapy by delivering heat and soothing massage. Additionally, the lamps provide topical heating. -temporary relief of minor muscle and joint pain, and stiffness -temporary relief of minor joint pain associated with arthritis
-temporary increase in local circulation where applied
-Relaxation of muscles
#### G. Device Description
This device is intended to provide patient with muscle relaxation therapy by delivering heat and soothing massage. This device has auto mode, and four custom modes to massage the back and apply heat to calves and thighs. For the upper mattress, there are germanium
DEC 2 2 2010
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ceramic roller controlled left and right by motor. Germanium ceramic roller also can be controlled up and down. The users can choose the auto mode or custom mode by using the remote control and the remote control has the FND screen which shows the temperature and LED which indicates operation condition.
| Feature | Specification | |
|----------------------------------|---------------------|----------------------------------------------|
| Upper and Lower<br>body mattress | Temperature setting | 30°C/35°C/40°C/45°C/50°C/55°C/60°C/65°C/OFF. |
| | Vertical control | Operated by using up/down photo sensor |
| | Horizontal Control | Operated by using Hall effect sensor |
| AUX8 | Temperature setting | 30°C/35°C/40°C/45°C/50°C/55°C/60°C/65°C/OFF. |
| Time setting | | 15/30//45/60/15 (Minutes) |
| Mode | | Auto mode<br>Custom mode1,2,3,4 |
| Weight | | 75Kg |
| Dimensions | | 2,000mm(L)x 700mm(w) x 550mm(H) |
# H. Technological Characteristics:
# I. Substantial Equivalence Comparison
This device, INAREX CORPORATION, thermal massage bed (2D-GX) and predicate device are substantially equivalent and have the same intended use. Technological and performance difference do not raise any new questions of safety or effectiveness. Comparison analysis, including comparison tables, of the subject device versus the predicate device is provided as below:
| Model Name | 2D-GX | 2D-LX | |
|---------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------|
| 510(K) Number | None yet | K080554 | |
| Classification | Table, physical therapy, multi<br>function (Class II),<br>21 CFR 890.5880 | Same | |
| Intended Use | Thermal Massage Bed (2D-GX) is<br>a device intended to provide<br>patients with muscle relaxation<br>therapy by delivering heat and<br>soothing massage. Additionally, the<br>lamps provide topical heating. | Same | |
| Indications | Thermal Massage Bed (2D-GX) is<br>a device intended to provide<br>patients with muscle relaxation<br>therapy by delivering heat and<br>soothing massage.<br>Additionally, the lamps provide<br>topical heating | Same | |
| | | -temporary relief of minor muscle<br>and joint pain, and stiffness | |
| | | -temporary relief of minor joint<br>pain associated with arthritis | |
| | | -temporary increase in local<br>circulation where applied | |
| | | -Relaxation of muscles | |
| Standards | | IEC60601-1<br>IEC60601-1-2<br>IEC60601-2-38. | Same |
| | Rated supply volt | 120V~/230V~ | Same |
| | Supply Frequency | 50/60Hz | Same |
| | Power Consumption | Max.230VA | 200W |
| | Dimensions | 2,000mm(L)x700mm(W)x550mm(H) | 2,000mm(L)x700mm(W)x700mm(H) |
| | Weight | 75Kg | 88Kg |
| | Safe Working Load | Max.170Kg | Same |
| | Use temperature | 30°C~65 °C | Same |
| Upper<br>body<br>mattress | General<br>Description | Programmed to apply thermal<br>massage to upper body by<br>operating germanium roller. | Programmed to apply<br>thermal massage to upper<br>body by operating jade<br>roller. |
| | Up/Down | Rack Gear type | Cam Follower type |
| | Up/Down<br>limmit | -Photo Sensor applied<br>-LED for checking the working<br>condition | Mechanical limmit switch |
| | LAMP<br>Left &<br>right<br>transmission<br>limmit | Same<br>-Hall effect sensor applied<br>-LED for checking the working<br>condition | 12v 10w<br>Mechanical limmit switch |
| | Massage<br>roller | Germanium ceramic | Jade |
| Lower<br>body<br>mattress | General<br>Description | Apply heat to the lower body on the<br>lower body mattress.<br>-For the component of lower<br>mattress, there are heating film<br>protection , heating panel, heating<br>film protection, non woven fabric,<br>Germanium ceramic and net<br>material ( written in order) | Give thermal massage<br>therapy by operating jade<br>roller. |
| | Heating<br>panel | -Two heating film protection<br>protect heating panel back and forth | Not Applicable |
| Control panel | | It contains terminal for the power<br>supply, auxiliary hand-held unit,<br>remote control, and connecting<br>cables. | Same |
| Auxilia | General<br>Description | | |
| ry<br>handheld unit | | Can apply heat directly to the body<br>by one set of germanium hand-held unit | Can apply heat directly to<br>the body by two sets of jade<br>hand-held unit. |
| | 2 Aux | Eliminated | Applied |
| | 8 Aux | The caps are made of Germanium<br>ceramic | Applied<br>The caps are made of Jade |
| | Outer Cover | Removable and hand washable for<br>easy cleaning | Same |
| Remote<br>controller | General<br>Description | A user friendly remote control that<br>controls all functions automatically<br>or manually. | Same |
| | Buttons | Rubber pad type (similar to TV<br>remote control) | Sticker pad type |
| | Temp./Time | Display area is wider than 2D-LX | |
| | Repeating<br>term | Repeating term is divided into four<br>terms. | None |
| | Height<br>control | (L1, L2, L3) 3 Steps, height is<br>measured from the head side (upper<br>side). | (L1, L2, L3)3 Steps, height<br>is measured from the lower<br>side. |
| | Software | MCU Atmega32 | MCU Atmega128 |
| | | -Due to change of MCU Atmega32 to MCU Atmega128, program<br>size2D-LX (75KB) has been changed into 2D-GX (95KB). In | |
| | | addition, due to the change of I/O from the chip itself, firmware is | |
| | | changed and sources of each part are distinguishable and those | |
| | | make the device modifiable. | |
| | Feature | Thermal method is modified by using Germanium ceramic and<br>heat on the lower part. | |
| Risk<br>analysis | Potential<br>new<br>hazard<br>introduced by the<br>modification | -Heat transfer rate of germanium ceramic is higher than that of jade<br>and this makes temperature goes higher than 2D-LX. | |
| | | -There is no control system for overload of motor | |
| | Causes of<br>the<br>hazards | -Temperature of upper germanium roller is higher than that of jade<br>roller. | |
| | | -If there is no bimetal and control system, temperature goes up to<br>120°C | |
| | | -Surface temperature of 8 Auxiliary handheld unit is higher than<br>2D-LX. | |
| | | -If the upper body left &right limmit sensor(hall sensor) is bad, it is<br>hard to control(Activation is checkable by naked eyes) | |
| | | -There is no other control system for motor load. (Even if there is<br>large load while motor is activating, output keeps coming out.) | |
| | Potential<br>effects on<br>the user | There is possibility of burning by germanium ceramic roller or<br>cam. | |
| | The<br>severity | 4 | |
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| level | |
|-----------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|
| The<br>actions<br>taken to<br>mitigate<br>the risks | -Temperature is controlled by temperature sensor |
| | -If the temperature control system is bad, power turns OFF by<br>bimetal. |
| | -Temperature control of lower heat is designed to make lower<br>temperature than actual temperature. (Checking temperature<br>variation) |
| | -If the Hall effect sensor and Photo sensor are not connected, error<br>occurs and system stops. |
| | -System turns OFF when the remote control and 2D-GX is<br>separated. |
| | -Motor should go to head side, and up/down position should be<br>down side when the device is off. Device does not turn off if it is<br>not initialized. |
# J. Discussion of Non-Clinical Tests Performed for Determination of Substantial Equivalence is as follows:
The Model 2D-GX thermal massage bed has been tested to and meets the requirements of the following standards.
IEC60601-1 :88+A1:91+A2:95 Medical electrical equipment-Part1:General requirements for safety
IEC 60601-2-38:1996+A1:1999Medical electrical equipment Part2: Particular requirements for the safety of electrically operated hospital beds
IEC60601-1-2:2007 Medical electrical equipment-Part1-2: General requirements for basic safety and essential performance-Collateral standard: Electromagnetic compatibility-Requirements and tests.
## K. Discussion of Clinical Tests Performed:
The performance test was performed in order to show the safety of the device and to show the device can make the therapeutic range (40-45℃) from the users' skin surface temperature. By testing 30℃ and 65℃ (minimum and maximum of the device temperature setting) for 5 people, the device is able to elevate skin surface temperature from normal baseline temperature to the therapeutic range (40~~45℃) when the device activated by 65℃ setting. And for 30℃ setting, device has not been shown to provide a therapeutic effect and is indicated for comfort warming only.
## L. Conclusion:
The non-clinical testing and clinical study results demonstrate that the 2D-GX, thermal massage bed is safe, accurate. It also demonstrates that the 2D-GX, thermal massage bed is substantially equivalent to the predicate device, 2D-LX, currently sold on the U.S. market.
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Image /page/5/Picture/1 description: The image shows the logo for the Department of Health & Human Services USA. The logo consists of a stylized eagle with three lines representing its wings, and the words "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" are arranged in a circular pattern around the eagle. The logo is black and white.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring. MID 20993-0002
Inarex Corporation % Ms. Eileen Yang Business Association Co., Ltd. Migun Techno World II C-dong 524 #533-1 Yongsan-dong Yuseong-gu Daejeon, KOREA
DEC 2 2 2010
Re: K102281
Trade/Device Name: Thermal Massage Bed, Model No. 2D-GX Regulation Number: 21 CFR 890.5880 Regulation Name: Multi-function physical therapy table Regulatory Class: Class II Product Code: JFB Received: November 30, 2010
Dear Ms. Yang:
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. 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.
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.
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 803); good manufacturing practice requirements as set
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# Page 2 - Ms. Eileen Yang
forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled. "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
AC is. nh
for.
Mark N. Melkerson Director Division of Surgical, Orthopedic, and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# Indications for Use
DEC 2 2 2010
K102281 510(k) Number (if known):
Device Name: Thermal Massage Bed Model No. 2D-GX
Indications for Use: Thermal Massage Bed (2D-GX) is a device intended to provide patients with muscle relaxation therapy by delivering heat and soothing massage. Additionally, the infrared lamps provide topical heating for:
-Temporary relief of minor muscle and joint pain, and stiffness
-Temporary relief of minor joint pain associated with arthritis
-Temporary increase in local circulation where applied
-Relaxation of muscles
Prescription Use _____________________________________________________________________________________________________________________________________________________________ (Part 21 CFR 801 Subpart D)
AND/OR
Over-The-Counter Use x (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE OF NEEDED)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Concurrence of CDRH, Office of Device Evaluation (ODE)
Division Sign Off
(Division Sign-Off Division of Surgical, Orthopedic, and Restorative Devices
Page 1 of 1
510(k) Number K102281
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.