Smith & Nephew's "No Sting Skin Prep™" is intended for use as a liquid film forming product that when applied to intact skin, forms a film for skin attachment sites for drainage tubes, external catheters, surrounding ostomy sites and adhesive dressings. This product is sold OTC for use by ostomates and other individuals who wish to reduce trauma to skin upon removing adhesive devices/products. The product is applied to the skin and allowed to dry. The solvent base evaporates leaving a polymeric film on the skin. After drying, the adhesive device, dressing, Ostomy device, tape, etc., is attached. - a) "No Sting Skin Prep™" applies a coating that prepares the skin for adhesives and provides a protective interface that may reduce friction during the removal of tape. "No Sting Skin Prep™" is indicated for skin attachment sites for draining tubes, external catheters, surrounding ostomy sites and other adhesive dressings. - b) "No Sting Skin Prep™" can be used in sensitive stoma areas as a skin protectant and may reduce irritation from contact with body wastes and stoma fluid. - "No Sting Skin PrepTM" forms a protective film on skin that serves as a skin c) protectant which may reduce exposure to urine and feces. These types of products are sold OTC at various locations including pharmacies and home health care centers.
Device Story
No-Sting Skin Prep is a water-based, alcohol-free liquid applied via nonwoven wipe or tufted swab to intact skin. Solvent evaporates, leaving a protective polymeric film. Used by patients, family, or clinicians in home or clinical settings to prepare skin for adhesive devices (ostomy pouches, tubes, catheters, dressings). Film acts as a barrier against friction during adhesive removal and protects skin from irritation caused by urine, feces, or stomal secretions. Benefits include reduced skin trauma and improved adhesive adherence.
Clinical Evidence
Bench testing only. Biocompatibility evaluated per ISO 10993-5 (cytotoxicity) and FHSA regulations (primary skin irritation in rabbits). Results showed no primary irritation (index 0.00). Delayed dermal contact sensitization study in guinea pigs showed no significant evidence of sensitization. Preservation efficacy confirmed per USP 23.
Technological Characteristics
Water-based, alcohol-free liquid formulation; nonwoven wipe or tufted swab applicator. Solvent carrier/polymer coating system. Non-sterile. No electronic or software components.
Indications for Use
Indicated for ostomates and individuals requiring skin protection at attachment sites for drainage tubes, external catheters, and adhesive dressings; serves as a protective interface to reduce friction during tape removal and irritation from body wastes/stoma fluid on intact skin. Not for use on open or deep puncture wounds.
Regulatory Classification
Identification
A liquid bandage is a sterile device that is a liquid, semiliquid, or powder and liquid combination used to cover an opening in the skin or as a dressing for burns. The device is also used as a topical skin protectant.
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<973228
### Wound Management Division
1775 Starkey Road, P.O. Box 1970 go. FI_33779-1970 U.S.A
Smith - Nephew
ith & Nephew, Inc.
NOV 2 5 1997
# 510(K) S U M M A R Y
# No-Sting Skin Prep
Preparation Date: August 21, 1997
Submitter: Address:
Phone:
Fax:
Jim G. Irvin Smith & Nephew Inc. Wound Management Division 11775 Starkey Road Largo, FL 33773-4727 (813) 392-1261 (813) 399-3468
# Registration Official/Contact Person:
Jim Irvin, Vice President Quality Assurance and Regulatory Affairs Smith & Nephew, Inc. Wound Management Division
# Manufacturer Identification/Establishment Registration Number:
Smith & Nephew Inc. Wound Management Division 11775 Starkey Road Largo, FL 33773-4727 Phone (813) 392-1261 (813) 399-3468 Fax
#### Establishment Registration No: 1017593
#### Classification:
...
| Trade Name: | Smith & Nephew, Inc., No-Sting Skin Prep™ |
|----------------------|-------------------------------------------|
| Common Name: | Skin Preparation |
| Classification Name: | (Undetermined) |
While no clear category exists for this product, the ments of the product should be discussed relative to classification.
002
#### h:1510(k)\suinmary.doc
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The first portion discussed is product use as part of an Ostomy pouching process. In this situation it is our belief that No-Sting Skin Prep™ may be considered as an accessory to an Ostomy pouch per 876.5900. This in fact represents a large use segment for this product. The product is normally applied, allowed to dry and the pouch, tube or other adhesive device is then attached over the deposited film.
The other general position is the use of No-Sting Skin Prep™ under adhesive tapes, films, bandages, etc. The same manner of application of Skin Prep is applicable. After drying the patient, family member or health care professional will apply the adhesive device. In this case the product could be considered as a liquid bandage and be classified per 880.5090. The product becomes part of a total bandaging system since it is applied prior to the application of dressings and other bandaging products.
No-Sting Skin Prep™ is not used over open wounds, deep puncture wounds, etc.
| Product | Manufacturer |
|---------------------------------|---------------------------------------------------------------|
| Bard Protective Barrier Film | Bard Patient Care Division<br>Murray Hill, NJ (K821271A) |
| AllKare Protective Barrier Wipe | Convatec, A Bristol Myers Squibb Co.<br>Princeton, NJ |
| 3M No Sting Barrier Film | Manufactured for 3M Health Care,<br>Minneapolis, MN (K920794) |
Substantially Equivalent Products:
#### Device Description:
No-Sting Skin Prep™ is a water based alcohol free liquid impregnated on to a nonwoven wipe or tufted swab applicators.
This product is sold OTC for use by ostomates and other individuals who wish to reduce trauma to skin upon removing adhesive devices/products. The product is applied to the skin and allowed to dry. The solvent base evaporates leaving a polymeric film on the skin. After drying, the adhesive device, dressing, Ostomy device, tape, etc., is attached.
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#### Intended Use:
Smith & Nephew's "No Sting Skin Prep™" is intended for use as a liquid film forming product that when applied to intact skin, forms a film for skin attachment sites for drainage tubes, external catheters, surrounding ostomy sites and adhesive dressings.
This product is sold OTC for use by ostomates and other individuals who wish to reduce trauma to skin upon removing adhesive devices/products. The product is applied to the skin and allowed to dry. The solvent base evaporates leaving a polymeric film on the skin. After drying, the adhesive device, dressing, Ostomy device, tape, etc., is attached.
- a) "No Sting Skin Prep™" applies a coating that prepares the skin for adhesives and provides a protective interface that may reduce friction during the removal of tape. "No Sting Skin Prep™" is indicated for skin attachment sites for draining tubes, external catheters, surrounding ostomy sites and other adhesive dressings.
- b) "No Sting Skin Prep™" can be used in sensitive stoma areas as a skin protectant and may reduce irritation from contact with body wastes and stoma fluid.
- "No Sting Skin PrepTM" forms a protective film on skin that serves as a skin c) protectant which may reduce exposure to urine and feces.
These types of products are sold OTC at various locations including pharmacies and home health care centers.
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#### Technological Characteristics:
The No-Sting Skin Prep 4 is technologically the same as the substantially equivalent products -
> Bard Protective Barrier Film AllKare Protective Barrier Wipe 3M No-Sting Barrier Film
in that all products incorporate a solvent carrier/polymer coating system. As the product is applied, the solvent evaporates and deposits a thin polymer coating to the skin. The technological function of the products after application are also equivalent. All products are intended to:
- 关 deposit a thin polymeric film
- assist in protecting sensitive skin from urine, stomal secretions, etc. *
### Bio Compatibility
#### Cytotoxicity
An in vitro biocompatability test, based on the International Organization for Standardization (IS) 10993-5) guidelines, was conducted on the test article, Skin Prep Wipes - No-Sting Formula. After incubating, the cell cultures were examined macroscopically for cell decolorization around the test article and controls to determine the zone of cell lysis (if any). The cultures were then examined microscopically *100X) to verify any decolorized zones and to determine cell morphology in proximity to and beneath the test article.
The negative controls and the positive controls performed as anticipated. Under the conditions of this study, the test article showed evidence of causing cell lysis or toxicity greater than a USP grade of 2 (mild reactivity).
This is not considered significant as the product does not come into contact with open wounds. Typically beladine, alcohol and other topicals would be cytotoxic. These products are widely used in the health care sector without adverse consequences.
#### Contact Sensitization
A study was conducted in the guinea pig to evaluate the potential for delayed dermal contact sensitization of Skin Prep Wipes - No Sting Formula.
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Under the conditions of this study, the test article showed no significant evidence of causing delayed dermal contact sensitization in the guinea pig.
### Animal Primary Irritation
The test article, Skin Prep Wipes - No Sting Formula, was evaluated for primary skin irritation in accordance with the guidelines of the Federal Hazardous Substances Act (FHSA) Regulations, 16 CFR 1500.
Under the conditions of this study, no irritation was observed on the skin of the rabbits. The primary irritation index was calculated to be 0.00. The test article would not be considered a primary irritant to the skin since the empirical score was less than 5.00.
#### Preservation
The product is sold non-sterile. When innoculated and evaluated per USP 23, the product is adequately preserved.
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.
Image /page/5/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features a circular design with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the perimeter. Inside the circle is a stylized symbol consisting of three abstract human profiles facing to the right, stacked one above the other.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 25 1997
Mr. Jim Irvin Vice President Quality Assurance and Regulatory Affairs Smith & Nephew, Inc. 11775 Starkey Road, P.O. Box 1970 Largo, Florida 33779-1970
K973228 Re: No-Sting Skin Prep™ Regulatory Class: I Product Code: KMF Dated: August 21, 1997 Received: August 27, 1997
Dear Mr. Irvin:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). You may, therefore, market the device, subject to the general controls provisions The general controls provisions of the Act of the Act. include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. ਕਿ substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical General regulation (21 CFR Part 820) and that, Devices: through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP requlation may result in regulatory In addition, FDA may publish further announcements action. Please note: concerning your device in the Federal Register. this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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Page 2 - Mr. Jim Irvin
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4595. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be --------obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html".
Sincerely yours ,
Celia M. Witten, Ph.D., M.D. Director Division of General and Restorative Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510(k) Number 973228:
Device Name: "No Sting Skin PrepTM"
Indications for Use:
Smith & Nephew's "No Sting Skin Prep™" is intended for use as a liquid film - forming product that when applied to intact skin, forms a film for skin attachment sites for drainage tubes, external catheters, surrounding ostomy sites and adhesive dressings.
- a) "No Sting Skin Prep™" applies a coating that prepares the skin for adhesives and provides a protective interface that may reduce friction during the removal of tap:. "No Sting Skin Prep™" is indicated for skin attachment sites for draining tubes, external cather.ers, surrounding ostomy sites and other adhesive dressings.
- b) "No Sting Skin Prep™" can be used in sensitive stoma areas as a skin protectant and may reduce irritation from contact with body wastes and stoma fluid.
- c) "No Sting Skin Prep™" forms a protective film on skin that serves a: a skin protectant which may reduce exposure to urine and feces.
#### (PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (OI)E)
Ela Will
Prescription Use
OR
Over-the Counter Use
(Per 21CFR 801.109)
(Optional Format 1-2-96)
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.