K973770 · Allegiance Healthcare Corp. · IMD · Nov 13, 1997 · Physical Medicine
Device Facts
Record ID
K973770
Device Name
ALLEGIANCE KWIK HEAT WARM PERINEAL PACK
Applicant
Allegiance Healthcare Corp.
Product Code
IMD · Physical Medicine
Decision Date
Nov 13, 1997
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5710
Device Class
Class 1
Attributes
Therapeutic
Indications for Use
The Allegiance Kwik Heat™ Perineal Warm Pack is an Over-The-Counter, single-use, non-sterile device. It is a heat therapy pack intended to provide heat therapy for body surfaces. Additionally, this pack can be used post delivery to absorb postpartum lochia and provide therapeutic heat to relieve pain associated with an episiotomy incision.
Device Story
Single-use, non-sterile, over-the-counter perineal warm pack; consists of outer polyester-wrapped pouch containing perineal pad and internal plastic bubble; internal bubble houses supercooled solution of sodium thiosulfate, dextrose, and water; activation via folding unit to rupture internal bubble and kneading to initiate exothermic chemical reaction; provides localized heat therapy; used post-delivery to absorb lochia and relieve episiotomy-related pain/inflammation; intended for patient self-use.
Clinical Evidence
Bench testing only. Materials evaluated per ISO 10993-1, including skin sensitization, intracutaneous reactivity, and cytotoxicity. Active chemical mixture underwent primary skin irritation testing and confirmed toxicologically acceptable. Temperature performance testing conducted. Sodium thiosulfate meets Food Chemicals Codex (1981) and 21 CFR 184.1807 food-grade requirements.
Technological Characteristics
Materials: non-woven wrapped cellulose wood pulp fiber pad, polyester wrap, plastic pouch. Energy source: exothermic chemical reaction (sodium thiosulfate, dextrose, water). Form factor: perineal pad with integrated heat pack. Biocompatibility: ISO 10993-1 compliant. Chemical standards: Food Chemicals Codex (1981), 21 CFR 184.1807.
Indications for Use
Indicated for use as a heat therapy pack for body surfaces and post-delivery for absorbing lochia and relieving edema, inflammation, and pain associated with episiotomy incisions.
Regulatory Classification
Identification
A hot or cold disposable pack is a device intended for medical purposes that consists of a sealed plastic bag incorporating chemicals that, upon activation, provides hot or cold therapy for body surfaces.
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Allegiance Healthcare Corporation 510(k) Notification Allegiance Kwik Heat™ Perineal Warm Pack Thermal Business Unit
NOV 1 3 1997
K973770
# ATTACHMENT F
## SUMMARY OF SAFETY & EFFECTIVENESS
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Image /page/1/Picture/0 description: The image shows the word "Allegiance" in a bold, sans-serif font. To the left of the word is a symbol that resembles a plus sign, but it is made up of many small squares. The word "Allegiance" is the main focus of the image.
Allegiance Healthcare Corporation
1500 Waukegan Road McGaw Park, IL 60085 847.473.1500 FAX: 847.785.2461
Kg73770
### ATTACHMENT F
### SUMMARY OF SAFETY AND EFFECTIVENESS
Manufacturer:
Regulatory Affairs Contact
Telephone:
Date Summary Prepared:
Product Trade Name:
Common Name:
Classification:
Predicate Device: (K970399) Preamendment
Description:
Allegiance Healthcare Corporation Thermal Business Unit 808 Highway 24 West Moberly, Missouri 65270
Patricia Sharpe-Gregg 1500 Waukegan Road McGaw Park, Illinois 60085
(847) 578-3636
September 26, 1997
Allegiance Kwik Heat™ Perineal Warm Pack
Perineal Hot Pack
Cold and Hot Disposable Pack
Allegiance Kwik Kold™ Peri Cold Pack Large Adult Hot Pack
The Allegiance Kwik Heat™ Perineal Warm Pack is comprised of an outer pouch which is secured to a perineal pad and then wrapped in a polyester material. The heat source pouch consists of a supercooled solution of sodium thiosulfate, dextrose and water. The sodium thiosulfate, dextrose and water "bubble" is housed in a separate plastic pouch inside the outer pouch. The perineal pad is made of a non-woven wrapped cellulose wood pulp fiber. Activation of the heat source occurs by folding the unit to open the inner bubble which releases the liquid, and kneading the unit, thus creating a physical exothermic reaction.
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#### Allegiance Healthcare Corporation
・。
| 1500 Waukegan Road<br>McGaw Park, IL 60085<br>847.473.1500<br>FAX: 847.785.2461 | Page 2 of 2 |
|---------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Intended Use: | The Allegiance Kwik Heat™ Perineal Warm Pack<br>is an Over-The-Counter, single-use, non-sterile<br>device. It is a heat therapy pack intended to<br>provide heat therapy for body surfaces.<br>Additionally, this pack can be used post delivery to<br>absorb postpartum lochia and provide therapeutic<br>heat to relieve pain associated with an episiotomy<br>incision. |
| Substantial Equivalence: | The Allegiance Kwik Heat™ Perineal Warm Pack<br>is substantially equivalent to the Allegiance Kwik<br>Kold™ Peri Cold Pack, the Jack Frost Perineal Pad<br>(Warm), and the H.M.S. ™ Peri Warm™ Perineal<br>Pack in that the:<br>- intended use is the same<br>- performance attributes are the same<br>- method of activation is the same<br>The Allegiance Kwik Heat™ Perineal Warm Pack<br>is substantially equivalent to the Allegiance<br>Preamendment Small Hot Pack in that the:<br>- chemical composition is the same<br>- performance attributes of active<br>chemical ingredients are the same. |
| Summary of Testing: | All materials used in the composition of this hot<br>pack were identified, evaluated and tested as<br>required in ISO Standard 10993 Part 1. The<br>materials were subjected to skin sensitization,<br>intracutaneous reactivity and cytotoxicity testing.<br>Physical tests completed include: temperature<br>performance testing. The active chemical mixture<br>was subjected to primary skin irritation testing.<br>This mixture was found to be toxicologically<br>acceptable for its intended usage. The active<br>chemical ingredient was tested as identified in the<br>specifications of the Food Chemicals Codex, 3rd<br>Ed. (1981), p. 304, which is incorporated by<br>reference in the Code of Federal Regulations, 21<br>CFR 184.1807. Sodium Thiosulfate meets all food<br>grade requirements. This product is in compliance<br>with established standards, where applicable, and<br>was deemed acceptable for its intended use. |
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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 1 3 1997
Ms. Patricia Sharpe-Gregg Manager, Regulatory Affairs Alleqiance Healthcare Corporation 1500 Waukegan Road McGaw Park, Illinois 60085
Re: K973770 Allegiance Kwik Heat™ Perineal Warm Pack Regulátory Class: I Product Code: IMD Dated: October 1, 1997 Received: October 2, 1997
#### Dear Ms. Sharpe-Gregg:
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 requlations affecting your device can be found in the Code of Federal Requlations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the current Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic (QS) inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: 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 requlations.
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Page 2 - Ms. Patricia Sharpe-Gregg
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) 594-4659. 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 ene rogalacion Chororos) 211655 and .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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**Allegiance Healthcare Corporation**
1500 Waukegan Road
McGaw Park, Minois 60085 USA
847-473-1500
FAX: 847-785-2460
510(k) Notification Kwik Heat™Warm Perineal Pack Thermal Business Unit Page 1 of 1
| 510(k) Number (if known): | Unknown |
|---------------------------|---------|
|---------------------------|---------|
Device Name:
Indications For Use:
Allegiance Kwik Heat™ Warm Perineal Pack
Hot disposable pack intended for medical purposes that consists of a sealed plastic bag incorporating chemicals that, upon activation, provides hot therapy for body surfaces. Also used as a heat therapy pack with an absorbent perineal pad; for use post delivery to absorb lochea while relieving edema and inflammation associated with an episiotomy.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE)
Concurrence of CDRH, Office of Device Evaluation (ODE)
| Prescription Use<br>(Per 21 CFR 801.109) | |
|------------------------------------------|------------------------------------------------------------------------|
| | Over-The Counter Use <span style="text-decoration: overline;">X</span> |
(Division Sign-Off)
sion of General Restorat
| 510(k) Number | K973770 |
|---------------|---------|
|---------------|---------|
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.