BODY COMPOSITION ANALYZER, MODELS ZEUS 9.9 AND VENUS 5.5
K053556 · Jawon Medical Co., Ltd. · MNW · Aug 31, 2006 · Cardiovascular
Device Facts
Record ID
K053556
Device Name
BODY COMPOSITION ANALYZER, MODELS ZEUS 9.9 AND VENUS 5.5
Applicant
Jawon Medical Co., Ltd.
Product Code
MNW · Cardiovascular
Decision Date
Aug 31, 2006
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.2770
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The ZEUS 9.9 and VENUS 5.5 body composition analyzers are intended to estimate PBF(Percentage of Body Fat), MBF(Mass of Body Fat), LBM(Lean Body Mass), TBW(Total Body Water), BMI(Body Mass Index), BMR(Basic Metabolic Rate), Segmental LBM, ICW(Intra-Cellular Water), ECW(Extra-Cellular Water), and ratio of ECW/TBW using the BIA(Bio-electrical Impedance Analysis) method. The device measures or calculates the impedance, BMI(Body Mass Index), weight, and WHR(Waist to Hip Ratio) of the user. These devices are intended for use only in healthy subjects between the age of 7-89. The only difference between the ZEUS 9.9 and VENUS 5.5 is head part of main unit; that is, the head part of the ZEUS 9.9 has a key pad and touch screen while the head part of the VENUS 5.5 has only a touch screen.
Device Story
Compact, automatic impedance plethysmograph; measures body composition via BIA method. Inputs: user-provided personal data (height, weight, gender, age) and measured body impedance. Operation: tetra-polar electrodes contact hands and feet; device injects minute electric current (360 µA) to measure impedance across whole body and segments (arms, legs, trunk). Output: PBF, MBF, LBM, TBW, BMI, BMR, segmental LBM, ICW, ECW, ECW/TBW ratio, and WHR. Used in clinical or general settings; operated by user. ZEUS 9.9 features keypad and touch screen; VENUS 5.5 features touch screen only. Output provides quantitative body composition metrics to assist in health monitoring and assessment.
Clinical Evidence
Clinical comparison testing performed in healthy subjects (ages 7-89) comparing ZEUS 9.9 against BODYSTAT Quad Scan 4000 and TANITA BC-418. Results demonstrated no significant difference in performance between subject and predicate devices.
Technological Characteristics
Impedance plethysmograph; BIA method; tetra-polar electrode configuration (8 electrodes). AC line powered (110-120V, 50/60Hz). Compliance with IEC 60601-1, IEC 60601-1-2, and ISO 10993 standards.
Indications for Use
Indicated for healthy subjects aged 7-89 for estimation of body composition parameters including body fat, lean body mass, total body water, BMI, BMR, and segmental body water distribution using bioelectrical impedance analysis.
Regulatory Classification
Identification
An impedance plethysmograph is a device used to estimate peripheral blood flow by measuring electrical impedance changes in a region of the body such as the arms and legs.
Special Controls
*Classification.* Class II (special controls). The device, when it is a body composition analyzer which is not intended to diagnose or treat any medical condition, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.
Predicate Devices
BODYSTAT Quad scan 4000 Body Composition Analyzer (K002835)
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JAWON
1 OF PACE #1208-12, Sinsang, Jinryang, Kyungsan-City Kyungsangbukdo, 712-830 Korea TEL . 82-53-856-0993 FAX. 82-53-856-0995 e-mail : jawon@jawon.co.kr homepage : http://www.jawon.co.kr
# MEDICAL
## 510(k) Summary
## BODY COMPOSTION ANALYZER Models VENUS 9.9 and ZEUS 5.5
AUG 3 1 2006
3
K053556
## 1. COMPANY INFORMATION.
Name : Jawon Medical CO., LTD.
Address : 1208-12, Sinsang-Li, Jinryang-Eup, Kyungsan-City, Kyungsang-Bukdo, Korea.
Phone : 82-53-856-0993
Contact : Mr. J.H. CHO , Senior Engineer, R&D center
#### 2. DEVICE IDENTIFICATION.
Trade Name : Model ZEUS 9.9/VENUS 5.5 BODY COMPOSITION ANALYZER
Common name and Classification name : BODY COMPOSITION ANALYZER . Impedance plethysmograph, MNW
#### 3. PREDICATE DEVICE.
BODYSTAT Quad scan 4000 Body Composition Analyzer, K002835, decision on 07/03/2001
TANITA Body Composition Analyzer BC-418, K033157, decision on 08/08/2004
#### 4. DEVICE DESCRIPTION.
- Model ZEUS 9.9/VENUS 5.5 of Jawon Medical is compact, automatic General: Impedance plethysmographer intended for estimating of body composition of user such as PBF(Percentage of Body Fat), MBF(Mass of Sody Fat), LBM(Lean Body Mass), TBW(Total Body Water), BMI(Body Mass Index), BMR(Basic Metabolic Rate), Segmental LBM, ICW(Intra-Cellular water), ECW(Extra-Cellular Water), and ratio of ECW/TBW using the BIA/Bioelectrical Impedance Analysis) method. The device measures or calculates the impedance, BMI(Body Mass Index), weight, and WHR(Waist to Hin Ratio) of the user. These devices are intended for use only in healthy subjects between age of 7-89. The only difference between the ZEUS 9.9 and VENUS 5.5 is head part of main unit; that is, the head part of the ZEUS 9.9 has a key pad and touch screen while the head part of the VENUS 5.5 has only a touch screen.
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Image /page/1/Picture/0 description: The image shows the word "JAWON" in bold, black letters. The letters are large and fill most of the frame. A thick, black line underlines the entire word, emphasizing it. The background is plain white, making the text stand out.
## MEDICAL
PAGE 2 OF #1208-12, Sinsang, Jinryang, Kyungsan-City Kyungsangbukdo, 712-830 Korea TEL . 82-53-856-0993 FAX. 82-53-856-0995 e-mail : jawon@jawon.co.kr homepage : http://www.jawon.co.kr
14053556
3
### Operation: The subject device employs a measurement algorithms which is called BIA method, to measure user's body composition.
ZEUS 9.9/VENUS 5.5 device's tetra-polar type electrode connect to human body and then send an minute electric current like 360 A human body and then ZEUS 9.9/VENUS 5.5 device can measure impedance of the human body.
ZEUS 9.9/VENUS 5.5 can measure body composition of user with personal data which already saved height, weight, gender, ages and new calculated body impedance.
Model ZEUS 9.9/VENUS 5.5 is AC line powered(AC 110~120V, 50/60Hz) Power:
- 5. INTENDED USES: The ZEUS 9.9 and VENUS 5.5 body composition analyzers are intended to estimate PBF(Percentage of Body Fat), MBF(Mass of Body Fat), LBM(Lean Body Mass), TBW(Total Body Water), BMI(Body Mass Index), BMR(Basic Metabolic Rate), Segmental LBM, ICW(Intra-Cellular Water), ECW(Extra-Cellular Water), and ratio of ECW/TBW using the BIA(Bio-electrical Impedance Analysis) method. The device measures or calculates the impedance, BMI(Body Mass Index), weight, and WHR(Waist to Hip Ratio) of the user. These devices are intended for use only in healthy subjects between the age of 7-89. The only difference between the ZEUS 9.9 and VENUS 5.5 is head part of main unit; that is, the head part of the ZEUS 9.9 has a key pad and touch screen while the head part of the VENUS 5.5 has only a touch screen.
#### 6. COMPARISON WITH PREDICATE DEVICE.
Models ZEUS 9.9/VENUS 5.5 of Jawon devices have been compared with BODYSTAT Quad Scan 4000 of BODYSTAT LTD and TANITA Body Composition Analyzer BC-418. The intended uses of Jawon devices and predicate devices are the same. Both of Jawon devices and predicate devices use BIA(Bio-electrical Impedance Analysis) method to estimate body composition parameters,
The differences between Jawon devices and predicate devices are as follows Measurement frequency is 50, 5, 100, 200kHz for BODYSTAT Quad Scan 4000, and 50kHz for Tanita BC-418 instead of 50, 1, 5, 250, 550, 1000kHz for Jawon devices. 4 electrodes are placed on hands and feet for BODYSTAT Quad Scan 4000 and 8 electrodes on hands and feet for Tanita BC-418 instead of 8 electrodes on hands and feet(or ankle) for Jawon devices.
- Impedance measurement site is whole body for BODYSTAT Qaud Scan 4000 and right arm, right leg, left arm, left leg and trunk for Tanita BC-418 instead of whole body, right arm, right leg, left arm, left leg and trunk for Jawon devices.
- Therefore, there is no difference in intended use and no technologic differences that raise new questions concerning either safety or effectiveness.
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JAWON
## MEDICAL
PAGE 3 OF #1208-12, SInsang, Jinryang, Kyungsan-City Kyungsangbukdo, 712-830 Korea TEL . 82-53-856-0993 FAX. 82-53-856-0995 e-mail : jawon@jawon.co.kr homepage : http://www.jawon.co.kr
K C53556
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#### 7. Non-clinical tests
The ZEUS 9.9 and VENUS 5.5 body composition analyzers meet of the requirements of international standards IEC 60601-1, IEC 60601-1-2, and ISO 10993 series.
### 8. Clinical tests
Comparison testing was performed using the ZEUS 9.9 body composition analyzer and predicated devices-BODYSTAT Quad Scan 4000 and TANITA BC-418 in healthy subjects between the age of 7-89. Results of the testing showed that the ZEUS 9.9 body composition analyzer is equivalent in performance to the predicate devices-BODYSTAT Quad Scan 4000 and TANITA BC-418. There is no significant difference between the ZEUS 9.9 body composition analyzer and predicate devices-BODYSTAT Quad Scan 4000 and TANITA BC-418.
#### 9. Conclusions
Based on the indications for use, clinical data, non-clinical testing, and comparison to predicate devices, the ZEUS 9.9 and VENUS 5.5 body composition analyzers are as safe, as effective, and perform as well or better than the predicate devices-BODYSTAT Quad Scan 4000 Body Composition Analyzer and TANITA Body Composition Analyzer BC-418. Accordingly.
Confidential
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Food and Drug Administration 9200 Corporate Blvd. Rockville MD 20850
## AUG 3 1 2006
Jawon Medical Co., Ltd. c/o Mr. Heung Bong Lim MI Consulting Co., Ltd. Room 624, Life Officetel, 61-3 Yoido-Dong, Youngdeungpo-GU Seoul, Korea REPUBLIC OF KOREA 150-731
Re: K053556
Trade/Device Name: JAWON MEDICAL BODY COMPOSITION ANALYZER, MODELS ZEUS 9.9 AND VENUS 5.5 Regulation Number: 21 CFR §870.2772 Regulation Name: Impedance plethysmograph Regulatory Class: II Product Code: MNW Dated: August 2, 2006 Received: August 2, 2006
Dear Mr. Lim:
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave reviewed your Dector Pro() promation is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce use stated in the enclosure) to regally man of the Medical Device Amendments, or to devices that provide to May 20, 1770, and chient asks the provisions of the Federal Food, Drug, and Cosmetic have bech recuired in accoranted of a premarket approval application (PMA). You may, ACC (Act) that do not require apple at on the general controls provisions of the Act. The general therefore, mailier the det include requirements for annual registration, listing of devices, good Controls provisions of alsbeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into cither class II (Special Controls) or class III (Premarket IT your device is classified (see acore) historial controls. Existing major regulations affecting your Apploval), it thay be subject to sail aderal Regulations, Title 21, Parts 800 to 898. In addition, FDA device ban be round in nouncements concerning your device in the Federal Register.
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Protecting and Promoting Public Health
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Page 2 -
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); good manufacturing practice requirements as set Of It at 807), its end (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.
This letter will allow you to begin marketing your device as described in your Section 510(k) I ms letter notification. The FDA finding of substantial equivalence of your device to a legally premated predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at one of the following numbers, based on the regulation number at the top of this letter:
| 21 CFR 876.xxx | (Gastroenterology/Renal/Urology) | 240-276-0115 |
|----------------|----------------------------------|--------------|
| 21 CFR 884.xxx | (Obstetrics/Gynecology) | 240-276-0115 |
| 21 CFR 894.xxx | (Radiology) | 240-276-0120 |
| Other | | 240-276-0100 |
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). 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 (240) 276-3150
or at its Internet address http://www.fda.gov/cdrl/industry/support/index.html.
Sincerely vours.
Nancy Chogdon
Nancy C. Brogdon Director, Division of Reproductive, Abdominal, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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## Indications for Use
510(k) Number (if Known):
## Device Name: JAWON MEDICAL BODY COMPOSITION ANALYZER MODELS ZEUS 9.9 AND VENUS 5,5
Indications For Use:
The ZEUS 9.9 and VENUS 5,5 body composition analyzers are intended to estimate PBF(Percentage of Body Fat), MBF(Mass of Body Fat), LBM(Lean Body Mass), TBW(Total Body Water), BMI(Body Mass Index), BMR(Basic Metabolic Rate), Segmental LBM, ICW(Intra-Cellular Water), ECW(Extra-Cellular Water), and ratio of ECW/TBW using the BIA(Bio-electrical Impedance Analysis) method. The device measures or calculates the impedance, BMI(Body Mass Index), weight, and WHR(Waist to Hip Ratio) of the user.
These devices are intended for use only in healthy subjects between the age of 7-89.
The only difference between the ZEUS 9.9 and VENUS 5.5 is head part of main unit; that is, the head part of the ZEUS 9.9 has a key pad and touch screen while the head part of the VENUS 5.5 has only a touch screen
Prescription Use
AND/OR
Over-The-Counter Use *X*
(Per 21 CFR 801 Subpart D)
(21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IN NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
David R. Ingram
(Division Sign-Off) Division of Reproductive, Abdominal and Radiological Devic 510(k) Numbe
Page 1 of __1_
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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.
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.