K170003 · Zipline Medical, Inc. · PYO · Aug 18, 2017 · General Hospital
Device Facts
Record ID
K170003
Device Name
Zip 4 Skin Closure Device
Applicant
Zipline Medical, Inc.
Product Code
PYO · General Hospital
Decision Date
Aug 18, 2017
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 880.5240
Device Class
Class 1
Attributes
Therapeutic
Indications for Use
The Zip 4 Skin Closure Device is indicated for skin closure of minor lacerations. The Zip 4 Skin Closure Device may be sold direct to consumers (OTC).
Device Story
Zip 4 Skin Closure Device is a single-use, non-invasive, tape-based wound closure device for minor lacerations up to 4 cm. Device consists of two pressure-sensitive adhesive patches connected by an adjustable ratcheting mechanism. Applied to clean, dry skin; wound closed by compressing skin edges and tightening the latching member. Remains on skin during healing; removed by peeling. Used in clinical or home settings (OTC); operated by clinicians or patients. Provides mechanical tension to hold skin edges together without piercing tissue. Benefits include non-invasive wound approximation, reducing need for sutures or staples in minor wounds.
Clinical Evidence
No clinical testing was performed. Substantial equivalence is supported by bench testing, including dimensional and mechanical tests, simulated use, human wear testing, biocompatibility, sterility, and packaging/shelf-life validation.
Technological Characteristics
Materials: Biocompatible polyurethane strips, pressure-sensitive adhesive, polymer straps with ratcheting locks. Principle: Tape-based mechanical tension. Form factor: Single-use adhesive patch with adjustable closing mechanism. Sterilization: Electron-beam radiation. Standards: ISO 10993-1:2009, ISO 11137-2:2013, ASTM D 4169-14, ASTM F 2096-11, IEC/EN 62366:2014.
Indications for Use
Indicated for skin closure of minor lacerations in patients requiring non-invasive wound closure.
Regulatory Classification
Identification
A medical adhesive tape or adhesive bandage is a device intended for medical purposes that consists of a strip of fabric material or plastic, coated on one side with an adhesive, and may include a pad of surgical dressing without a disinfectant. The device is used to cover and protect wounds, to hold together the skin edges of a wound, to support an injured part of the body, or to secure objects to the skin.
Predicate Devices
3M Company Steri-Strip Skin Closure Device (2016-PA-0005)
Submission Summary (Full Text)
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 18, 2017
Zipline Medical, Inc. % Nancy Kaiser Regulatory Consultant 88 South Milton Avenue Campbell, California 95008
Re: K170003
Trade/Device Name: Zip 4 Skin Closure Device Regulation Number: 21 CFR 880.5240 Regulation Name: Medical Adhesive Tape and Adhesive Bandage Regulatory Class: Class I Product Code: PYO Dated: July 20, 2017 Received: July 21, 2017
Dear Nancy Kaiser:
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. 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.
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 devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set 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.
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If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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 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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely,
# David Krause -S
for
Binita S. Ashar, M.D., M.B.A., F.A.C.S. Director Division of Surgical Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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### Indications for Use
510(k) Number (if known) K170003
Device Name Zip 4 Skin Closure Device
| Indications for Use (Describe) |
|-----------------------------------------------------------------------------------|
| The Zip 4 Skin Closure Device is indicated for skin closure of minor lacerations. |
| 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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## K170003
# Premarket Notification [510(k)] Summary
| Submitter's<br>Name and<br>Address | ZipLine Medical, Inc.<br>747 Camden Ave., Suite A<br>Campbell, CA 95008 |
|-----------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Contact Name<br>and<br>Information | Name: Nancy Kaiser<br>Title: Regulatory Consultant<br>Tel: (408) 431.5858<br>Fax: N/A<br>E-mail: nancykaiser01@gmail.com |
| Date Prepared | December 30, 2016 |
| Trade Name | Zip® 4 Skin Closure Device |
| Common<br>Name | Skin Closure Device |
| Classification<br>Name | Tape and Bandage, Adhesive, Adjustable Closing Mechanism,<br>OTC Use (Product Code PYO); Class I Non-Exempt per 21 CFR<br>880.5240 |
| Predicate<br>Devices | 3M Company Steri-Strip Skin Closure Device, legally marketed as<br>pre-amendment device (PA Reference Number: 2016-PA-0005) |
| Device<br>Description | The Zip® 4 Skin Closure Device is a single-use non-invasive skin<br>closure device. A single Zip 4 device may be used to close<br>wounds up to 4 cm (1.5 inches) in length from minor cuts or minor<br>lacerations. The device is applied to clean, dry skin prior to skin<br>closure, remains on the skin during wound healing, and may be<br>removed by lifting one edge and peeling the device from the skin.<br>The device is made of polymeric materials and utilizes a non-<br>latex, pressure sensitive skin adhesive. The device contents are<br>provided sterile in an intact and unopened package. |
| Intended Use/<br>Indications for<br>Use | The Zip 4 Skin Closure Device is indicated for skin closure of<br>minor lacerations. The Zip 4 Skin Closure Device may be sold<br>direct to consumers (OTC). |
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Device Technological Characteristics and Comparison to Predicate Device
The Zip 4 device is made of two pressure-sensitive adhesive patches comprising the Adhesive Base, which are connected to each other by an Adjustable Closing Mechanism. The wound is closed by compressing the skin together with fingers and then pulling the adjustable latching member tight.
The 3M™ Steri-Strip™ is made of porous non-woven material reinforced with filaments for strength. The wound is closed by compressing skin with fingers or forceps and placing the strips across the wound. Steri-Strips are provided sterile in individual packs. Multiple strips can be placed next to each other, 3mm apart, to close larger wounds.
Both the Steri-Strip and Zip 4 devices are tape-based wound closure devices that do not pierce the skin but hold the skin together using tension across the wound. A side-by-side comparison of the subject device to the predicate device follows:
| | Subject Device: | Predicate Device: |
|--------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|
| Device Attribute | ZipLine Medical,<br>Inc.<br>Zip 4 Skin Closure<br>Device | 3M Corporation<br>Steri-Strip Skin<br>Closure Device<br>(Legally Marketed<br>as Preamendment<br>Device) |
| Device<br>Classification<br>Regulation Number<br>and Regulation<br>Description | Tape and<br>Bandage,<br>Adhesive,<br>Adjustable Closing<br>Mechanism, OTC<br>Use (Product Code<br>PYO); Class I Non-<br>Exempt per 21<br>CFR 880.5240 | Class I Exempt |
| Classification<br>Product Code | PYO | KGX |
| Mechanism of<br>Action | Tape-based wound<br>closure device that<br>does not pierce<br>tissue. | Same |
| Intended/<br>Indications for Use | The Zip 4 Skin<br>Closure Device is | Steri-Strip skin<br>closures are |
### 510(k) Summary - Device Comparison
Confidential and Proprietary to ZipLine Medical, Inc.
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| | indicated for skin<br>closure of minor<br>lacerations. . | indicated for use as a<br>skin closure device in<br>the treatment of<br>lacerations and<br>surgical incisions.<br>Steri-Strip skin<br>closures may also be<br>used in conjunctions<br>with skin sutures and<br>staples or after their<br>removal for wound<br>support. |
|------------------------|--------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Mechanism of<br>Action | Tape based wound<br>closure device that<br>does not pierce<br>tissue. | Same |
| Size | Closes wounds up to<br>4 cm (1.5 inches) in<br>length. | Steri-Strips are<br>available in various<br>sizes (e.g., 38 mm to<br>125 mm in length). |
| Components | Biocompatible<br>polyurethane strips<br>coated with adhesive<br>and polymer straps<br>with ratcheting locks. | Biocompatible<br>porous non-woven<br>material reinforced<br>with filaments for<br>strength and coated<br>with a hypoallergenic<br>adhesive. |
| How Supplied | Sterile, for single use<br>only | Same |
| Biocompatible | Yes | Same |
| Sterilization Method | (Electron-beam)<br>Radiation | Radiation |
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| Non-Clinical<br>Performance<br>Data | Performance testing was conducted on the subject Zip 4 Skin<br>Closure Device to demonstrate compliance with the product<br>requirements specification either by design analysis or functional<br>testing. The following product requirements are supported:<br>dimensional and mechanical tests, through simulated use as well<br>as a human wear test, biocompatibility, sterility, and packaging /<br>shelf life. The following standards were used for testing: |
|-------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| | • ISO 10993-1:2009 (Cor:2010), Biological evaluation of<br>medical devices – Part 1: Evaluation and testing |
| | • ISO 11137-2:2013, Sterilization Of Health Care Products -<br>Radiation - Part 2: Establishing The Sterilization Dose |
| | • ASTM D 4169-14, Standard Practice for Performance<br>Testing of Shipping Containers and Systems |
| | • ASTM F 2096-11: Standard Test Method for Detecting<br>Gross Leaks in Packaging by Internal Pressurization<br>(Bubble Test) |
| | • IEC/EN 62366: 2014, Medical Devices - Application Of<br>Usability Engineering To Medical Devices |
| Clinical<br>Performance<br>Data | No clinical testing was deemed necessary to support the<br>substantial equivalence. |
| Conclusion | This 510(k) notification for the Zip 4 Skin Close Device concludes<br>that the device is considered to be substantially equivalent to the<br>legally-marketed predicate device (as shown in the 510(k)<br>Summary – Device Comparison Table). The successful<br>completion of the performance testing further supports the subject<br>Zip 4 Skin Closer Device's substantial equivalence to the predicate<br>device. The usability testing that was successfully performed<br>shows that the proposed device can be marketed for over-the-<br>counter use. No issues of safety or effectiveness are raised by the<br>Zip 4 Skin Closure Device. |
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.