K964354 · Ormed GmbH · ILO · Aug 29, 1997 · Physical Medicine
Device Facts
Record ID
K964354
Device Name
ARTOCOOL-S WATER CIRCULATING COLD PACK
Applicant
Ormed GmbH
Product Code
ILO · Physical Medicine
Decision Date
Aug 29, 1997
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5720
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
Localized cold therapy for post-traumatic and post-surgical medical and or surgical conditions.
Device Story
Artrocool®-S is a water-circulating cryotherapy device consisting of an insulated chest, a DC electric pump, and tubing connected to body cuffs. User freezes a water-filled cartridge, places it in the chest, and fills the reservoir with a 4:1 water-alcohol mixture. The pump circulates chilled fluid through the cuff applied to injured or post-surgical body structures. Used in clinical or home settings to provide 6-8 hours of continuous cold therapy for trauma, orthopaedic surgery, sports injuries, and rehabilitation. Healthcare providers or patients use the device to manage pain and swelling; output is the physical application of cold therapy to the patient's skin.
Clinical Evidence
No clinical data provided. Substantial equivalence is based on bench testing and comparative performance specifications (cooling time, temperature range, electrical safety, and design features).
Technological Characteristics
System includes insulated chest, DC electric pump, and fluid cuffs. Operates on 6 VDC power (from 115/230 VAC). Recirculating fluid is 4:1 water/alcohol mixture. Cooling provided by frozen water cartridge. Electrical safety compliant with UL-544; ground leakage current <55 micro-amps. Non-sterile; surface disinfection only.
Indications for Use
Indicated for treatment of pain and swelling of acute periarticular processes, pain and swelling following mobilization of shoulder stiffness under anesthesia, pain and swelling postoperatively for bones, joints and soft tissue, and pain and swelling caused by musculoskeletal contusions and athletic injury.
Regulatory Classification
Identification
A water circulating hot or cold pack is a device intended for medical purposes that operates by pumping heated or chilled water through a plastic bag and that provides hot or cold therapy for body surfaces.
Special Controls
*Classification.* Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 890.9.
Predicate Devices
Theracool™ Water Circulating Cold Pack
Polar Care™ Water Circulating Cold Pack
Dr. Kool™ Water Circulating Cold Pack
Cryo Cuff™ Water Circulating Cold Pack
Submission Summary (Full Text)
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Aug 29 1983
K964354
ATTACHMENT III
REVISED
SUMMARY OF SAFETY AND
EFFECTIVENESS INFORMATION
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K964354
# Section 510(k) Premarket Notification
## Summary of Safety and Effectiveness Information
### ORMED, GMBH
**Regulatory Authority:** Safe Medical Devices Act of 1990, 21 CFR 807.92
1. **Device Trade Name:** Artrocool®-S Water Circulating Cold Pack
2. **Common Name:** Water Circulating Cold Pack
**Classification Name:** Water Circulating Cold Pack
3. **Establishment Name & Registration Number:**
Merzhauser Strasse 112
D-79100 Freiberg I. B.
Germany
011 49 7 61/45 84 471 (voice)
011 49 7 61/45 84 450 (fax)
**Reg. Number:** 2247872
4. **Classification:**
§ 890.5720 Water circulating hot or cold pack. (a) Identification. A water circulating hot or cold pack is a device intended for medical purposes that operates by pumping heated or chilled water through a plastic bag and that provides hot or cold therapy for body surfaces. (b) Classification. Class II (performance standards).
**Product Code:** 89ILO
**Device Class:** Class II
**Classification Panel:** Physical Medicine
5. **Contact Person:**
Mrs. Margit Bayha
ORMED, GMBH
Merzhauser Strasse 112
D-79100 Freiberg I. B.
Germany
011 49 7 61/45 84 471 (voice)
011 49 7 61/45 84 450 (fax)
6. **Special Controls:**
Special controls have not been established for this device.
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7. Device Description:
The Artrocool®-S is a typical cold liquid recirculating cryotherapy device. The Artrocool®-S is an insulated ice chest-like box with a closed loop liquid recirculating pump and tubing. The tubing connects to a variety of cuffs designed to be placed on or around injured or post surgical body structures, limbs or joints. The device operates by the use of a water filled cartridge and an insulated chest. The water filled bottle is frozen solid prior to first use. When the bottle is frozen, it is placed within the insulated chamber of the Artrocool. A 4:1 mixture of water and alcohol is poured into the fluid reservoir (balancing container) until full. The pump is circulated with the connecting tubing and cuff attached. Once both are filled and all air bubbles have been purged from the system the unit is ready for service.
8. Substantially Equivalent Device(s):
The Artrocool®-S is substantially equivalent to the Theracool™ Water Circulating Cold Pack, the Polar Care™ Water Circulating Cold Pack, the Dr. Kool™ Water Circulating Cold Pack and the Cryo Cuff™ Water Circulating Cold Pack.
9. Comparison to Predicate Device(s):
With the exception of the Cryo Cuff™ which is a gravity flow device, the Artrocool®-S and the remaining cold therapy units utilize a small DC electric pump to circulate and recirculate a chilled fluid through an assortment of body contact pads or cuffs. All of the powered units including the Artrocool®-S are UL-544 compliant. The water circulating electric pump has a ground current leakage value of less than 55 micro-amps.
None of the units depend on direct refrigeration of the circulating liquid. The Dr. Kool™ and the Artrocool®-S utilize a container of frozen water or chemical gel to cool the isolated recirculating liquid. The rest of the units circulate melt water throughout the system.
The intended uses of all of the units are essentially the same and include conditions like trauma, orthopaedic surgery, sports medicine injuries and rehabilitation, rheumatology, general, plastic and reconstructive surgery, chirosurgery and neurology. All the devices are suitable for any traumatic, medical or surgical conditions benefiting from cold therapy.
The duration of therapeutic cold conditions for all of the units is variable depending on issues like pad/cuff size, ambient temperature, patient temperature, etc. Time duration of useful cold therapy for the comparison units is from 1 ½ to 10 hours. The Artrocool®-S provides cooling for 6 to 8 hours of continuous use.
10. Packaging:
Standard, paper fiber industry typical bulk shipper packaging is utilized. The packaging selected for use is sufficient to identify, protect and transport the device safely.
11. Sterilization/Re-sterilization:
May not be sterilized or re-sterilized. Surface disinfection is possible using commercially available non-solvent based disinfectant products. Cleaning and sanitizing instructions are supplied with each Artrocool®-S unit.
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# 12. Conclusion:
Based on the materials, intended uses, design, and effectiveness, the **Arrocool®-S** Water Circulating Cold Pack is equivalent to the referenced legally marketed comparison water circulating cold packs. The feature comparison chart below graphically demonstrates this equivalence.
# 13. Feature Comparison Table:
| FEATURE | Arrocool® | Theracool™ | Polar Care™ | Dr. Kool™ | Cryo Cuff™ | SE? |
| --- | --- | --- | --- | --- | --- | --- |
| Intended Use | Trauma, orthopaedics, sports medicine, rheumatology, general, plastic and reconstructive surgery, chirosurgery and neurology | Same | Same | Same | Same | Yes |
| Cooling Time | Approx. 8 hours at 43°F | Up to 9½ hours | Approx. 8 hours | Up to 10 hours | Approx. 6-8 hours | Yes |
| Cold Source | Water - Ice | Water - Ice | Water - Ice | Frozen Gel | Ice & Water | Yes |
| Operating Temperature Range | 39°F to 59°F depending on ambient air temp | Unstated | 32°F - 70°F depending on ambient air temp | Minimum temp. 38°F | Unstated | Yes |
| Power Supply | 6 VDC from 115/230 VAC 50/60 Hz | 12 VDC from 110 VAC 60Hz | 12 VDC from 110 VAC 60Hz | 12 VDC from 110 VAC 60Hz | Gravity flow only | Yes |
| Ground Leakage Current | <55 micro-amps | <55 micro-amps | <55 micro-amps | <55 micro-amps | <55 micro-amps | Yes |
| Recirculating Fluid | 4:1 mixture of water and alcohol - 250 ml. | Water | Water - | Water | Water | Yes |
| Disposable cuff covers | Yes | Yes | Yes | Yes | Yes | Yes |
| Cuff | 5 styles/sizes | 1 multi-use universal | 4 styles, 4 sizes | 3 styles, 1 size ea. | 4 styles, 2 sizes ea. | Yes |
| Performance Standards | UL-544 | UL-544 | UL-544 | UL-544 | Non-electric | Yes |
| Weight | Approx. 12.75 lb. filled | Approx. 8 to 12 lb. filled | Approx. 24 lb. w/ cooler | Approx. 8.9 lb. filled | Approx. 10 lb. filled | Yes |
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DEPARTMENT OF HEALTH & HUMAN SERVICES
Public Health Service
Food and Drug Administration
9200 Corporate Boulevard
Rockville MD 20850
Mr. David W. Schlerf
Buckman Company, Inc.
Representing Ormed, GmBH
1000 Burnett Avenue, Suite 450
Concord, California 94520
Re: K964354
Artrocool®-S Water Circulating Cold Pack
K964799
Artrotherm™ Cryotherapy and Thermotherapy
Regulatory Class: II
Product Code: ILO
Dated: July 27, 1997
Received: July 29, 1997
Dear Mr. Schlerf:
We have reviewed your Section 510(k) notifications of intent to market the devices referenced above and we have determined these devices are substantially equivalent (for the indications for use stated in the enclosures) 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 devices, 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.
If your devices are classified (see above) into either class II (Special Controls) or class III (Premarket Approval), they may be subject to such additional controls. Existing major regulations affecting your devices can be found in the Code of Federal Regulations, 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 devices in the Federal Register. Please note: this response to your premarket notification submission does
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Page 2 - Mr. David W. Schlerf
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.
This letter will allow you to begin marketing your devices as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your devices to legally marketed predicate devices results in a classification for your devices and thus, permits your devices to proceed to the market.
If you desire specific advice for your devices 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 devices, 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
Enclosures
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Page 1 of 1
510(k) Number: K964354
Device Name: ARTROCOOL™ WATER CIRCULATING COLD PACK
## Intended Use:
1. Localized cold therapy for post-traumatic and post-surgical medical and or surgical conditions.
## Indications For Use:
1. Treatment of pain and swelling of acute periarticular processes.
2. Treatment of pain and swelling following mobilization of shoulder stiffness under anesthesia.
3. Treatment of pain and swelling postoperatively for bones, joints and soft tissue.
4. Treatment of pain and swelling caused by musculoskeletal contusions and athletic injury.
PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NECESSARY
Concurrence of CDRH, Office of Device Evaluation (ODE)

Prescription Use
(Per 21 CFR 801.109)
OR
Over-The-Counter Use ☑
(Optional format 1-2-96)
5
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.