K171442 · Chemence Medical, Inc. · OMD · Sep 25, 2017 · General, Plastic Surgery
Device Facts
Record ID
K171442
Device Name
Exofin Fusion Skin Closure System
Applicant
Chemence Medical, Inc.
Product Code
OMD · General, Plastic Surgery
Decision Date
Sep 25, 2017
Decision
SESE
Submission Type
Abbreviated
Regulation
21 CFR 878.4011
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Exofin® Fusion Skin Closure System is intended for topical application only to hold closed easily approximated skin edges of wounds from surgical incisions, including punctures from minimally invasive surgery, and simple, thoroughly cleansed, trauma-induced lacerations. Exofin® Fusion Skin Closure System should be used in conjunction with, but not in place of, deep dermal stitches. Additionally, the adjunct wound closure device component maintains temporary skin edge alignment along the length of the wound during application of the liquid adhesive.
Device Story
Exofin Fusion Skin Closure System is a sterile, liquid topical skin adhesive (2-octyl cyanoacrylate) with a self-adhering mesh adjunct. Used in clinical settings for surgical and trauma wound closure. The mesh is applied to approximated skin edges to provide temporary alignment (up to 20 cm length) before the liquid adhesive is applied via an applicator with a self-puncturing cap and elastomeric brush. The adhesive polymerizes within minutes to form a barrier. The device is used by clinicians to hold skin edges together, supplementing deep dermal stitches. It benefits patients by providing wound closure and a microbial barrier while the adhesive film remains intact.
Clinical Evidence
A porcine wound healing study compared the subject device to the predicate over 14 days. Histological analysis confirmed normal healing progression for both, with no significant differences in safety or effectiveness. Bench testing included wound closure strength (ASTM F2458-05), adhesive strength (ASTM F2258-05), T-Peel strength (ASTM F2256-05), Lap-Shear strength (ASTM F2255-05), heat of polymerization, degradation rate, viscosity, and microbial barrier properties. Biocompatibility testing followed ISO 10993-1 (cytotoxicity, irritation, sensitization, implantation, systemic toxicity).
Technological Characteristics
Monomeric 2-octyl cyanoacrylate adhesive with D & C Violet #2 colorant. Includes self-adhering mesh adjunct. Sterilized via dry heat and ethylene oxide. Bench testing per ASTM F2458-05, F2258-05, F2256-05, F2255-05. Biocompatibility per ISO 10993-1. Single-use aluminum tube with elastomeric brush applicator.
Indications for Use
Indicated for topical approximation of easily approximated skin edges of surgical incisions (including minimally invasive surgery punctures) and simple, cleansed, trauma-induced lacerations. Used as an adjunct to deep dermal stitches.
Regulatory Classification
Identification
A tissue adhesive with adjunct wound closure device intended for the topical approximation of skin is a device indicated for topical application only to hold closed easily approximated skin edges of wounds from surgical incisions, including punctures from minimally invasive surgery, and simple, thoroughly cleansed, trauma-induced lacerations. It may be used in conjunction with, but not in place of, deep dermal stitches. Additionally, the adjunct wound closure device component maintains temporary skin edge alignment along the length of wound during application of the liquid adhesive.
Special Controls
*Classification.* Class II (special controls). The special control for this device is FDA's “Guidance for Industry and FDA Staff; Class II Special Controls Guidance Document: Tissue Adhesive with Adjunct Wound Closure Device Intended for the Topical Approximation of Skin.” See § 878.1(e) for the availability of this guidance document.
Predicate Devices
DermabondTM PrineoTM Skin Closure System (K133864 and K082289)
Submission Summary (Full Text)
{0}------------------------------------------------
Image /page/0/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized image of three human profiles facing to the right, stacked on top of each other.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
September 25, 2017
Chemence Medical, Inc. Kenneth Broadley, Ph.D. Executive Vice President 200 Technology Drive Alpharetta, Georgia 30005
Re: K171442
Trade/Device Name: Exofin Fusion Skin Closure System Regulation Number: 21 CFR 878.4011 Regulation Name: Tissue adhesive with adjunct wound closure device intended for topical approximation of skin Regulatory Class: Class II Product Code: OMD Dated: August 24, 2017 Received: August 25, 2017
Dear Dr. Broadley:
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
{1}------------------------------------------------
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.
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 (DICE) 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 (DICE) 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
{2}------------------------------------------------
# Indications for Use
510(k) Number (if known)
#### K171442
Device Name Exofin Fusion Skin Closure System
#### Indications for Use (Describe)
Exofin Fusion Skin Closure System is intended for topical application only to hold closed easily approximated skin edges of wounds from surgical incisions, including punctures from minimally invasive surgery, and simple, thoroughly cleansed, trauma-induced lacerations. Exofin Fusion Skin Closure System should be used in conjunction with, but not in place of, deep dermal stitches. Additionally, the adjunct wound closure device component maintains temporary skin edge alignment along the length of the wound during application of the liquid adhesive.
| Type of Use (Select one or both, as applicable) | |
|-----------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------|
| <span style="font-family: Arial, sans-serif;">☑</span> Prescription Use (Part 21 CFR 801 Subpart D) | <span style="font-family: Arial, sans-serif;">☐</span> Over-The-Counter Use (21 CFR 801 Subpart C) |
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
This section applies only to requirements of the Paperwork Reduction Act of 1995.
#### *DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.*
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov
"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."
{3}------------------------------------------------
Image /page/3/Picture/0 description: The image contains the logo for Chemence Medical. The logo consists of a red diamond shape with a white "C" inside it, above the words "CHEMENCE" in red and "MEDICAL" in blue. The "®" symbol is located to the right of the word "CHEMENCE".
# 510(k) Summary (In accordance with 21 CFR 807.92)
# Chemence Medical, Inc. Exofin® Fusion Skin Closure System
### 1. Submitter
| Submitted by: | Chemence Medical, Inc.<br>200 Technology Drive<br>Alpharetta, GA 3005-3926<br>Phone: 844-633-4583<br>Fax: 678-820-3320 |
|----------------------|------------------------------------------------------------------------------------------------------------------------|
| Contact Person: | Dr. Kenneth N. Broadley<br>Executive Vice President<br>Chemence Medical, Inc. |
| Date of Summary: | September 25th, 2017 |
| | |
| Device Trade Name: | Exofin® Fusion Skin Closure System |
| Common Name: | Topical Tissue Adhesive With Mesh |
| Classification Name: | Tissue Adhesive with Adjunct Wound Closure Device for Topical<br>Approximation of Skin (21 CFR 878.4011) |
| Regulatory Class: | Class II |
| Product Code: | OMD |
## 3. Predicate Device
Legally marketed device to which equivalence is claimed:
| Device Name: | DermabondTM PrineoTM Skin Closure System |
|-------------------|------------------------------------------|
| 510(k) Clearance: | K133864 and K082289 |
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for Chemence Medical. The logo consists of a red and blue diamond shape with a white "C" in the center. Below the diamond shape is the word "CHEMENCE" in red, followed by the word "MEDICAL" in blue. The logo is simple and modern, and the colors are eye-catching.
### 4. Device Description:
Exofin® Fusion Skin Closure System is a sterile, liquid topical skin adhesive containing a monomeric (2octyl cyanoacrylate) formulation and the colorant D & C Violet #2. It is provided in a single use aluminum collapsible tube packaged in a RXM 48gaPET-200LDPE Film/1059B uncoated Tyvek pouch containing an applicator. The applicator is comprised of a self-puncturing cap and a soft elastomeric brush, which allows the adhesive to spread uniformly. As applied to skin, the liquid is syrup-like in viscosity and polymerizes within minutes. Exofin® Fusion Skin Closure System has a low viscosity. In vitro studies have shown that Exofin® Fusion Skin Closure System acts as a barrier to microbial penetration as long as the adhesive film remains intact. Clinical studies were not conducted to demonstrate microbial barrier properties and a correlation between microbial barrier properties and a reduction in infection have not been established. Exofin Fusion Skin Closure System also incorporates a self-adhering mesh that is applied to the approximated skin edges to provide temporary skin edge alignment of two incisions up to 20 cm each in length until the liquid adhesive is applied to achieve skin closure.
### 5. Intended Use:
Exofin® Fusion Skin Closure System is intended for topical application only to hold closed easily approximated skin edges of wounds from surgical incisions, including punctures from minimally invasive surgery, and simple, thoroughly cleansed, trauma-induced lacerations. exofin® Fusion Skin Closure System should be used in conjunction with, but not in place of, deep dermal stitches. Additionally, the adjunct wound closure device component maintains temporary skin edge alignment along the length of the wound during application of the liquid adhesive.
### 6. Comparison of Technological Characteristics with the Predicate Device.
Exofin® Fusion® Skin Closure System is very similar to Dermabond™ Prineo™ Skin Closure System with regard to intended use, mechanism of action and performance characteristics. Both devices contain a self-adhering mesh that is applied to the approximated skin edges to provide temporary skin edge alignment of up to 20 cm in length until the liquid topical adhesive is applied to achieve wound closure. Both liquid adhesives have the same principle ingredient, 2-octylcyanoacrylate. The Exofin® Skin Closure System has two mesh strips of 22 cm in length by 4 cm in width. The Dermabond™ Prineo™ Skin Closure System come in two configurations, one which contains one mesh strip of the same dimensions and another with a dispenser for the mesh tape which is 60 cm in length.
{5}------------------------------------------------
Image /page/5/Picture/0 description: The image shows the logo for Chemence Medical. The logo consists of a red and blue diamond shape with a white "C" in the center. Below the diamond shape is the word "CHEMENCE" in red, with a registered trademark symbol. Below the word "CHEMENCE" is the word "MEDICAL" in blue.
## 7. Performance Data
Testing was performed in accordance with the FDA Class II Special Controls Guidance Document: Tissue Adhesive with Adjunct Wound Closure Device Intended for the Topical Approximation of Skin.
### Performance Testing
The following tests were performed on Exofin® Fusion Skin Closure System to demonstrate substantial equivalence:
- Wound closure strength (ASTM F2458-05)
- Adhesive strength in tension (ASTM ● F2258-05)
- T-Peel adhesion strength (ASTM F2256-05)
- Lap-Shear Strength (ASTM F2255-05) ●
- Heat of polymerization
- Degradation rate
- Viscosity
- Microbial barrier properties
### Biocompatibility Testing
The biological evaluation of exofin® Fusion Skin Closure System was performed in accordance with ISO 10993-1, "Biological Testing of Medical Devices - Part 1: Evaluation and testing within a risk management process. The following test reports were provided in this submission:
- Cytotoxicity
- Intracutaneous irritation
- Sensitization
- Implantation
- Systemic Toxicity
A porcine wound healing study was performed to compare Dermabond™ Prineo™ Skin Closure System and the Exofin® Fusion Skin Closure System in terms of their respective effectiveness and their impact on the progression of wound healing over the course of 14 days. Extensive histological analysis showed that healing progressed normally during the course of the study. Dermabond™ Prineo™ Skin Closure System and the Exofin® Fusion Skin Closure System were considered to be substantially equivalent in terms of their performance and safety during the course of this study.
{6}------------------------------------------------
Image /page/6/Picture/0 description: The image shows the logo for Chemence Medical. The logo consists of a red and blue diamond shape with a white "C" inside. Below the diamond shape is the word "CHEMENCE" in red, with a registered trademark symbol. Below the word "CHEMENCE" is the word "MEDICAL" in blue.
### Sterilization and Shelf Life
Exofin® Fusion Skin Closure System is sterilized by dry heat and ethylene oxide gas. The shelf life of the device has been determined through both real time and accelerated aging studies.
### 8. Conclusion
Based on the intended use, technological characteristics, safety and performance testing, Exofin® Fusion Skin Closure System has been shown to be substantially equivalent to the Dermabond™ Prineo™ Skin Closure System.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.