K191425 · Deroyal Industries, Inc. · FMT · Jan 21, 2020 · General Hospital
Device Facts
Record ID
K191425
Device Name
Hydro-Temp Neonatal Skin Temperature Probe Cover
Applicant
Deroyal Industries, Inc.
Product Code
FMT · General Hospital
Decision Date
Jan 21, 2020
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 880.5130
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The DeRoyal HYDRO-TEMP® Neonatal Skin Temperature Probe Covers are used to adhere the thermistor of the temperature probe to the patient and insulate the thermistor from ambient room temperature ensuring correct temperature readings.
Device Story
Device is an adhesive probe cover used in NICU settings; functions as an accessory to DeRoyal-branded neonatal skin temperature probes. Consists of a release liner, patient-contacting hydrogel adhesive, and metallized polyester backing; one configuration includes polyethylene foam. Operates by affixing thermistor to neonate's skin and insulating sensor from ambient room temperature. Clinicians apply the cover to ensure accurate temperature readings during infant radiant warmer use. Benefits include secure sensor placement and improved thermal isolation for precise monitoring.
Clinical Evidence
Bench testing only. Mechanical testing per ASTM D903-98 demonstrated greater adhesive strength (4.42N vs 4.28N) and pull force (10.1N vs 9.1N) compared to predicate. Insulation testing confirmed no significant temperature difference. Accuracy testing performed per IEC 60601-2-21. Biocompatibility testing (cytotoxicity, sensitization, irritation) performed per ISO 10993.
Indicated for neonates in the NICU to secure temperature probe thermistors to skin and provide thermal insulation for accurate temperature monitoring.
Regulatory Classification
Identification
The infant radiant warmer is a device consisting of an infrared heating element intended to be placed over an infant to maintain the infant's body temperature by means of radiant heat. The device may also contain a temperature monitoring sensor, a heat output control mechanism, and an alarm system (infant temperature, manual mode if present, and failure alarms) to alert operators of a temperature condition over or under the set temperature, manual mode time limits, and device component failure, respectively. The device may be placed over a pediatric hospital bed or it may be built into the bed as a complete unit.
Special Controls
*Classification.* Class II (Special Controls):(1) The Association for the Advancement of Medical Instrumentation (AAMI) Voluntary Standard for the Infant Radiant Warmer;
(2) A prescription statement in accordance with § 801.109 of this chapter (restricted to use by or upon the order of qualified practitioners as determined by the States); and
(3) Labeling for use only in health care facilities and only by persons with specific training and experience in the use of the device.
Predicate Devices
HYDRO-TEMP® NICU and Skin Surface Temperature Sensor (K925006)
Submission Summary (Full Text)
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January 21, 2020
DeRoyal Industries, Inc. Sarah Bennett Senior Regulatory Affairs Specialist 200 DeBusk Lane Powell, Tennessee 37849
Re: K191425
Trade/Device Name: Hydro-Temp® Neonatal Skin Temperature Probe Cover Regulation Number: 21 CFR 880.5130 Regulation Name: Infant Radiant Warmer Regulatory Class: Class II Product Code: FMT Dated: December 20, 2019 Received: December 23, 2019
Dear Sarah Bennett:
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.
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
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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/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (OS) 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 https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
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/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). 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 (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-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 Geeta Pamidimukkala Acting Assistant Director DHT3C: Division of Drug Delivery and General Hospital Devices. and Human Factors 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) K191425
Device Name
HYDRO-TEMP® Neonatal Skin Temperature Probe Cover
Indications for Use (Describe)
The DeRoyal HYDRO-TEMP® Neonatal Skin Temperature Probe Covers are used to adhere the thermistor of the temperature probe to the patient and insulate the thermistor from ambient room temperature ensuring correct temperature readings.
Type of Use (Select one or both, as applicable)
| <span style="font-family:Wingdings;">X</span> Prescription Use (Part 21 CER 801 Subpart D) | <span style="font-family:Wingdings;">☐</span> Over-The-Counter Use (21 CER 801 Subpart C) |
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Image /page/3/Picture/0 description: The image shows the logo for DeRoyal. The logo consists of a blue swoosh-like graphic on the left, followed by the text "DeRoyal" in blue. The "R" in "Royal" has a registered trademark symbol next to it.
Corporate 200 DeBusk Lane Powell, TN 37849 USA 865.938.7828 800.251.9864 www.deroyal.com
DeRoyal Industries, Inc. Traditional 510(k) – HYDRO-TEMP® Neonatal Skin Temperature Probe Cover (K191425) January 16, 2020
### 510(k) Summary
| Date prepared: | January 16, 2020 |
|------------------------|---------------------------------------------------------------------------------------------------------|
| 510(k) Owner: | DeRoyal Industries, Inc.<br>200 DeBusk Lane<br>Powell, TN 37849<br>Owner/Operator #1044833 |
| 510(k) Contact: | Sarah Bennett<br>Senior Regulatory Affairs Specialist<br>P: 865-362-6112<br>sabennett@deroyal.com |
| Contract Manufacturer: | DeRoyal Industries, Inc.<br>185 Richardson Way<br>Maynardville, TN 37849<br>FDA Establishment # 1034876 |
| Trade Name: | HYDRO-TEMP® Neonatal Skin<br>Temperature Probe Cover |
| Common Name: | Skin Temperature Probe Cover |
| Classification Name: | Warmer, Infant Radiant |
| Device Product Code: | FMT |
| Regulatory Class: | Class II |
| Regulation Name: | 21 CFR 880.5130 |
| Classification Panel: | General Hospital |
| Predicate Devices: | HYDRO-TEMP® NICU and Skin<br>Surface Temperature Sensor |
# Device Description
The HYDRO-TEMP® Neonatal Skin Temperature Probe Cover is an accessory to be used with DeRoyal-branded NICU neonatal skin temperature probes used with an infant radiant warmer. They have not been evaluated for use with other manufacturer's
January 16, 2020
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Image /page/4/Picture/0 description: The image shows the logo for DeRoyal. The logo consists of a blue swoosh-like graphic on the left, followed by the word "DeRoyal" in blue, sans-serif font. The "R" in Royal has a registered trademark symbol next to it.
Corporate 200 DeBusk Lane Powell, TN 37849 USA 865.938.7828 800.251.9864 www.deroyal.com products. It is an adhesive pad used to affix a temperature sensor to a neonate's skin to monitor the skin surface temperature. The cover also insulates the temperature sensor from ambient room temperature to ensure temperature readings are accurate.
There are two configurations of the probe cover. Both of these configurations contain a release liner, a patient-contacting hydrogel adhesive, and a metallized polyester backing. One configuration contains an additional foam material that is placed in between the hydrogel adhesive and metallic backing. The device is non-sterile and can be packaged on its own in a foil pouch or in a resealable plastic bag with a temperature probe.
#### Indications for Use:
The DeRoyal HYDRO-TEMP® Neonatal Skin Temperature Probe Covers are used to adhere the thermistor of the temperature probe to the patient and insulate the thermistor from ambient room temperature ensuring correct temperature readings.
### Differences to Predicate Device:
The subject device has greater adhesive bond to the predicate device. This was demonstrated through peel strength testing between both devices. The Indications for Use statement for the subject device is specifically for the probe cover whereas the predicate device included the temperature sensor probe and the probe cover for monitoring temperature. The differences in thickness do not impact the safety or effectiveness.
| Characteristic | HYDRO-TEMP®<br>Neonatal Skin<br>Temperature Probe<br>Cover | HYDRO-TEMP®<br>NICU and Skin Surface<br>Temperature Sensor<br>Probe (K925006) |
|-------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Prescription Only | Yes | Yes |
| Use Environment | NICU | NICU |
| Design | A pad consisting of a<br>release liner, non-<br>sensitizing hydrogel<br>adhesive that contacts the<br>patient's skin, and<br>metalized film backing.<br>One configuration also<br>contains a polyethylene<br>foam that is placed in<br>between the gel and film. | The device is a<br>disposable skin surface<br>temperature probe. The<br>device consists of wire<br>sets and a pad. The pad<br>holds the sensing device<br>against the skin. It is<br>adhesive lined or<br>hydrogel lined foam. The<br>pad is composed of<br>materials which will<br>insulate the sensing<br>elemnt from the ambient<br>temperature and adhere<br>the element to the skin. |
| Materials | Release liner: Polyester<br>film | Release liner: Polyester<br>film |
#### Summary of Technological Characteristics
January 16, 2020
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Image /page/5/Picture/0 description: The image shows the logo for DeRoyal. The logo consists of a blue swoosh-like graphic on the left, followed by the word "DeRoyal" in blue, with the "®" symbol in the upper right corner of the word. The logo is simple and modern, and the blue color gives it a sense of trustworthiness and reliability.
Corporate 200 DeBusk Lane Powell, TN 37849 USA 865.938.7828 800.251.9864 www.deroyal.com
| | Patient adhesive:<br>Hydrogel<br>Foam: Polyethylene foam<br>Backing: Metallic polyester film | Patient adhesive:<br>Hydrogel<br>Foam: Polyethylene foam<br>Backing: Metallic polyester film |
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| Adhesive | Hydrogel | Hydrogel |
| Sterility | Non-Sterile | Non-Sterile |
| Biocompatibility | ISO 10993-1 compliant | ISO 10993-1 compliant |
| Average peel force per ASTM D903-98 | 4.42N | 4.28N |
| Average force required to remove cover from surface | 10.1N | 9.1N |
### Summary of Performance Tests
Mechanical testing was performed to evaluate the adhesive performance of the proposed device compared to the predicate per ASTM D903-98 (Reapproved 2017) - Standard Test Methods for Peel or Stripping Strength of Adhesive Bonds. The results of this testing demonstrate the proposed device has a greater adhesive strength than the predicate. A pull test was performed to evaluate the adhesive performance of the proposed device to the predicate. This was performed to an internal standard. Insulation testing demonstrated that the new material did not result in a temperature difference from the predicate device. Accuracy testing was performed to IEC 60601-2-21 demonstrating the tolerance range of temperature readings when the probe cover was used. The following biocompatibility tests also were performed in accordance with ISO 10993 and FDA guidance: cytotoxicity, sensitization, and irritation. These results show that the proposed device is biologically safe for its intended use.
# Conclusion
The HYDRO-TEMP® Neonatal Skin Temperature Probe Cover is substantially equivalent to the predicate device, HYDRO-TEMP® NICU and Skin Surface Temperature Sensor (K925006). The tests performed demonstrate the device is substantially eqivalent to the predicate device. The proposed device is similar to the predicate but with a modified hydrogel material to improve the adhesive strength, which is supported by performance testing.
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.