K190218 · Qingdao Youjia Hygiene Technology Co., Ltd. · HEB · May 9, 2019 · Obstetrics/Gynecology
Device Facts
Record ID
K190218
Device Name
Unscented Menstrual Tampon
Applicant
Qingdao Youjia Hygiene Technology Co., Ltd.
Product Code
HEB · Obstetrics/Gynecology
Decision Date
May 9, 2019
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 884.5470
Device Class
Class 2
Indications for Use
The BiuBiu tampon is inserted into the vagina and used to absorb menstrual and other vaginal discharge.
Device Story
BiuBiu Tampon is an unscented menstrual tampon consisting of an absorbent pledget, withdrawal cord, and applicator. The device is inserted into the vagina by the user to absorb menstrual and other vaginal discharge. The pledget is made of 100% organic cotton; the applicator is made of polyethylene and polypropylene. The device is provided non-sterile for single-use. It is available in three versions (regular, super, super plus) with color-coded applicators. The applicator features a smooth, rounded tip and a no-slip grip barrel to facilitate insertion. The device functions as a passive absorbent barrier.
Clinical Evidence
Bench testing only. No clinical data provided. Biocompatibility testing (cytotoxicity, vaginal irritation, skin sensitization) performed per ISO 10993-1, ISO 10993-5, and ISO 10993-10. Physical performance testing included appearance, dimensions, compatibility, integrity, and expulsion force, all meeting predefined acceptance criteria.
Technological Characteristics
Pledget/cord: 100% organic cotton. Applicator: Polyethylene and Polypropylene. Design: Cylindrical pledget with bullet-like tip; applicator with smooth, rounded tip and no-slip grip. Non-sterile, single-use. Dimensions vary by absorbency (Regular, Super, Super Plus). Biocompatibility per ISO 10993-1, -5, -10.
Indications for Use
Indicated for use by individuals to absorb menstrual and other vaginal discharge.
Regulatory Classification
Identification
An unscented menstrual tampon is a device that is a plug made of cellulosic or synthetic material that is inserted into the vagina and used to absorb menstrual or other vaginal discharge. This generic type of device does not include menstrual tampons treated with scent (i.e., fragrance materials) or those with added antimicrobial agents or other drugs.
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May 9, 2019
Oingdao Youjia Hygiene Technology Co., Ltd % Jessie You Official Correspondent Shenzhen Joyantech Consulting Co., Ltd Room 1122, No.55 Shizhou Middle Road, Nanshan District Shenzhen, Guangdong 755 China
K190218 Trade/Device Name: BiuBiu Tampon Regulation Number: 21 CFR§ 884.5470 Regulation Name: Unscented Menstrual Tampon Regulatory Class: II Product Code: HEB Dated: January 26, 2019 Received: February 4, 2019
Dear Jessie You:
Re:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies.
You must comply with all the Act's requirements. including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see
https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). 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 (http://www.fda.gov/DICE) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely.
for Sharon M. Andrews Assistant Division Director DHT3B: Division of Reproductive, Gynecology and Urology Devices OHT3: Office of Gastrorenal, ObGyn, General Hospital and Urology 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) K190218
Device Name BiuBiu Tampon
Indications for Use (Describe)
The BiuBiu tampon is inserted into the vagina and used to absorb menstrual and other vaginal discharge.
Type of Use (Select one or both, as applicable)
Prescription Use (Part 21 CFR 801 Subpart D)
|X | Over-The-Counter Use (21 CFR 801 Subpart C)
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# K190218 - 510(k) Summary
## 1. Submission Sponsor
| Applicant Name | Qingdao Youjia Hygiene Technology Co., Ltd |
|----------------|--------------------------------------------------------|
| Address | No. 778 Mingyue Road, Huangdao Zone, Qingdao,<br>China |
| Phone No. | +86-532-86613616 |
| Contact Person | Ms. Huiying Zhao |
| Email | youjia_zhaohy@sina.com |
| Date Prepared | May 8, 2019 |
## 2. Submission correspondent
| Name | Shenzhen Joyantech Consulting Co., Ltd |
|----------------|----------------------------------------------------------------------------------------------------|
| Address | Room 1122, No.55 Shizhou Middle Road, Nanshan<br>District,<br>Shenzhen,<br>Guangdong,<br>P.R.China |
| Post Code | 518000 |
| Phone No. | 86-755-86069197 |
| Contact Person | Mr. Field Fu; Ms. Jessie You; Ms. Elly Xu |
| Email | Jessie@cefda.com; elly@cefda.com |
## 3. Device Identification
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| Trade name | BiuBiu Tampon |
|-----------------------|------------------------------------|
| Device versions | Regular, Super, and Super Plus |
| Common name | Unscented Menstrual Tampon |
| Device Class | II |
| Classification Number | 21 CFR 884.5470 |
| Classification Name | Unscented menstrual tampon |
| Product code | HEB (Tampon, Menstrual, Unscented) |
# 4. Predicate Device Information
| Trade name | Ontex Tampon (Unscented) |
|---------------|--------------------------|
| 510(k) number | K090819 |
The predicate device has not been subject to a design related recall.
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# 5. Device Description
The BiuBiu tampon is composed of an absorbent pledget (tampon), a withdrawal cord, and an applicator. The pledgets (cleared under K090819) have a cylindrical, bullet-like shape and the applicators have a smooth, rounded tip to ease insertion. The barrel of the applicator has a no-slip grip design to help hold the tampon tightly. Each tampon is individually wrapped and packaged. There are three versions of the BiuBiu tampon with different absorbencies: regular, super and super plus. Each version has a different color applicator. The BiuBiu tampon is provided non-sterile and for single use only.
## 6. Indications for Use Statement
The BiuBiu tampon is inserted into the vagina and used to absorb menstrual and other vaginal discharge.
## 7. Substantial Equivalence Discussion
| ltem | Subject Device<br>(K190218):<br>BiuBiu Tampon | Predicate Device<br>(K090819):<br>Ontex Tampon<br>(Unscented) | Comments |
|--------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------|
| Manufacturer | Qingdao Youjia<br>Hygiene Technology<br>Co., Ltd | Ontex International | None |
| Common<br>name | Unscented Menstrual<br>Tampon | Unscented Menstrual<br>Tampon | Same |
| Indications for<br>use | The BiuBiu tampon is<br>inserted into the<br>vagina and used to<br>absorb menstrual and<br>other vaginal<br>discharge. | Ontex Tampon is a<br>tampon that is inserted<br>into the vagina and<br>used to absorb<br>menstrual fluid. The<br>intended use of the<br>organic cotton tampon<br>is the same as all other<br>products that are<br>legally marketed. | Similar |
| Design | Tampon with<br>cylindrical shape and<br>bullet-like tip.<br>Applicator with<br>smooth and rounded<br>tip. | Tampon with cylindrical<br>shape and bullet-like<br>tip. Applicator with<br>smooth and rounded<br>tip. | Similar |
| Components | | | |
| The BiuBiu tampon is composed of an absorbent pledget and an applicator. | The Ontex Tampon consists of an absorbent pledget, with and without an applicator. | Similar. The predicate device comes without an applicator. However, both the subject and predicate device include tampons with applicators. | |
| Specifications | Regular, super, and super plus | Regular, super, and super plus | Same |
| Overwrap | Individual wrapping | Individual wrapping | Same |
| Pledget dimensions | Regular | Regular | Identical |
| | Length (mm):<br>42-46<br>Diameter (mm):<br>11.8-12.2<br>Withdrawal cord (mm):<br>130-160<br>Syngina absorption (g):<br>6.0-9.0 | Length (mm):<br>42-46<br>Diameter (mm):<br>11.8-12.2<br>Withdrawal cord (mm):<br>130-160<br>Syngina absorption (g):<br>6.0-9.0 | |
| | Super | Super | Identical |
| | Length (mm):<br>46-50<br>Diameter (mm):<br>12.8-13.2<br>Withdrawal cord (mm):<br>130-160<br>Syngina absorption (g):<br>9.0-12.0 | Length (mm):<br>46-50<br>Diameter (mm):<br>12.8-13.2<br>Withdrawal cord (mm):<br>130-160<br>Syngina absorption (g):<br>9.0-12.0 | |
| | Super plus | Super plus | Identical |
| | Diameter (mm): | Diameter (mm): | |
| | 14.8–15.2 | 14.8–15.2 | |
| | Withdrawal cord (mm): | Withdrawal cord (mm): | |
| | 130-160 | 130-160 | |
| | Syngina absorption (g): | Syngina absorption (g): | |
| | 12.0-15.0 | 12.0-15.0 | |
| Materials | -Pledget: 100% organic cotton<br>-Withdrawal cord:<br>100% organic cotton<br>-Applicator:<br>Polyethylene and Polypropylene | -Pledget: 100% organic cotton<br>-Withdrawal cord:<br>100% organic cotton<br>-Applicator:<br>Cardboard | Different.<br>The pledget and cord are identical. However, the subject device utilizes a different material in the applicator. |
| Applicator<br>Dimensions | Inner tube length (mm) X Diameter (mm):<br>Regular: 41.60 $\pm$ 0.20 x 9.75 $\pm$ 0.15<br>Super: 41.60 $\pm$ 0.20 x 9.75 $\pm$ 0.15<br>Super plus: 41.60 $\pm$ 0.20 x 9.75 $\pm$ 0.15<br><br>Outer tube length (mm) X Diameter (mm):<br>Regular: 76.8 $\pm$ 0.9 x 14.35 $\pm$ 0.15<br>Super: 77.6 $\pm$ 0.9 x 17.15 $\pm$ 0.15<br>Super plus: 77.6 $\pm$ 0.9 x 17.15 $\pm$ 0.15 | Length with applicator:<br>120 – 125 mm<br><br>Diameter with applicator:<br>15.9 – 16.1 mm | Different.<br>The subject and predicate device have different dimensions. |
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K190218 Page 3 of 5
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The subject and predicate device have similar indications for use statements and have the same intended use. The technological characteristics of the subject device are different the subject device contains different applicator materials and dimensions. The different technological characteristics of the subject device do not raise different types of safety
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and effectiveness questions.
## 8. Non-Clinical Performance Data
The pledget components of the BiuBiu tampon were cleared under K090819, and remain unchanged. Therefore, data on the performance of the pledgets, consistent with the FDA guidance document: Menstrual Tampons and Pads: Information for Premarket Notification Submissions (510(k)s), was leveraged from K090819 to support the performance of the BiuBiu Tampon pledgets.
The following non-clinical performance tests were performed on the applicator component of the BiuBiu tampon:
### Biocompatibility
Biocompatibility testing per ISO 10993-1:2009 and FDA guidance document Use of International Standard ISO 10993-1, "Biological Evaluation of Medical Devices – Part 1: Evaluation and testing within a risk management process."
- Cytotoxicity (ISO 10993-5:2009) .
- Vaginal Irritation (ISO 10993-10:2010)
- Skin Sensitization (ISO 10993-10:2010) .
The applicator was demonstrated to be non-cytotoxic, non-irritating, and non-sensitizing.
#### Physical performance testing
The following physical assessments were performed on the BiuBiu tampon applicator per in house methods with predefined acceptance criteria:
- Appearance
- Dimensions ●
- Compatibility of tampon and applicator ●
- Applicator integrity .
- Applicator expulsion force ●
## 9. Conclusion
The results of the performance testing described above demonstrate that the BiuBiu Tampon is as safe and effective as the predicate device and supports a determination of substantial equivalence.
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.