K253076 · Chengdu Cryo-Push Medical Technology Co.,Ltd · IRP · Apr 2, 2026 · Physical Medicine
Device Facts
Record ID
K253076
Device Name
Cryopush Cold Compression Device (A02-P-001)
Applicant
Chengdu Cryo-Push Medical Technology Co.,Ltd
Product Code
IRP · Physical Medicine
Decision Date
Apr 2, 2026
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 890.5650
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Cryopush Cold Compression Device is indicated for the temporary relief of minor muscle aches and pains. The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap. The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable.
Device Story
Device consists of main control unit and inflatable wraps; provides pneumatic compression and cold therapy. User selects pressure (20-100 mmHg); unit inflates wrap, holds for 10 seconds, then releases; cycle repeats. Default operation 30 minutes. Powered by rechargeable lithium batteries; portable. Used in clinics, hospitals, athlete training, and home environments by patients or clinicians. Output is mechanical compression and localized cooling; intended to relieve minor muscle aches and pains and increase circulation. Cold pack provides localized cold therapy. Device is non-invasive; patient-operated.
Clinical Evidence
No clinical data. Substantial equivalence supported by bench testing, including electrical safety (IEC 60601-1, IEC 60601-1-11, IEC 60601-1-2), battery safety (IEC 62133-2), electromagnetic immunity (AIM 7351731, IEEE ANSI C63.18), and internal performance testing (appearance, wrap function, service life, environmental stress, and pressure accuracy).
Technological Characteristics
Powered inflatable tube massager; 100-240V AC or rechargeable lithium battery. Wraps made of nylon with PVC laminate. Pressure range 0-100 mmHg; 10s hold time, 20s deflation. Operating temperature 5°C-40°C; cold pack operating range -18°C to +2°C. Software-controlled pneumatic system.
Indications for Use
Indicated for healthy individuals requiring temporary relief of minor muscle aches and pains, temporary increase in local circulation, and localized cold therapy.
Regulatory Classification
Identification
A powered inflatable tube massager is a powered device intended for medical purposes, such as to relieve minor muscle aches and pains and to increase circulation. It simulates kneading and stroking of tissues with the hands by use of an inflatable pressure cuff.
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FDA U.S. FOOD & DRUG ADMINISTRATION
April 2, 2026
Chengdu Cryo-push Medical Technology Co., Ltd
% Aria Yao
Regulatory Affairs Specialist
Shenzhen Joyantech Consulting Co., Ltd.
1713A, 17th Floor, Block A, Zhongguan Times Square
Liuxian Avenue, Xili Town, Nanshan District
Shenzhen, Guangdong 518000
China
Re: K253076
Trade/Device Name: Cryopush Cold Compression Device (A02-P-001)
Regulation Number: 21 CFR 890.5650
Regulation Name: Powered Inflatable Tube Massager
Regulatory Class: Class II
Product Codes: IRP, IME
Dated: June 18, 2025
Received: September 23, 2025
Dear Aria Yao:
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 (the 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 available 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.
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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K253076 - Aria Yao
Page 2
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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 Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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-devices/medical-device-safety/medical-device-reporting-mdr-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/medical-devices/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-devices/device-advice-comprehensive-regulatory-
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K253076 - Aria Yao
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assistance/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,
DIGITALLY SIGNED BY
ZACHARY MCKINNEY -S
Date: 2026.04.02
15:38:44 -04'00'
for Tushar Bansal, PhD
Acting Assistant Director, Acute Injury Devices Team
DHT5B: Division of Neuromodulation and
Physical Medicine Devices
OHT5: Office of Neurological and
Physical Medicine Devices
Office of Product Evaluation and Quality
Center for Devices and Radiological Health
Enclosure
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FORM FDA 3881 (6/20)
Page 1 of 1
PSC Publishing Services (301) 443-6740
EF
| DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration Indications for Use | Form Approved: OMB No. 0910-0120 Expiration Date: 06/30/2023 See PRA Statement below. |
| --- | --- |
| 510(k) Number (if known) K253076 | |
| Device Name Cryopush Cold Compression Device (A02-P-001) | |
| Indications for Use (Describe) The Cryopush Cold Compression Device is indicated for the temporary relief of minor muscle aches and pains. The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap. The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable. | |
| Type of Use (Select one or both, as applicable) ☐ Prescription Use (Part 21 CFR 801 Subpart D) ☑ 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." | |
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Chengdu Cryo-Push Medical Technology Co., Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
# 510(k) Summary K253076
## 1. Contact Details
### 1.1 Applicant information
| Applicant Name | Chengdu Cryo-Push Medical Technology Co., Ltd |
| --- | --- |
| Address | 102, 105, Zone 20, Huayin Industrial Port, No.618, Kexing Road (West), Wenjiang District, Chengdu 611137 Sichuan P.R.China |
| Phone No. | TEL: +86 18086852687 |
| Contact person | Zhang Peiyong |
| Date Prepared | Aug.10.2022 |
### 1.2 Submission Correspondent
| | Shenzhen Joyantech Consulting Co., Ltd.
1713A, 17th Floor, Block A, Zhongguan Times Square,
Liuxian Avenue, Xili Town, Nanshan District, Shenzhen,
Guangdong Province, China
+86 755-86069197 |
| --- | --- |
| Phone No. | |
| Contact person | Aria Yao |
| Contact person's e-mail | aria@cefda.com; james_tsai@cefda.com |
| Website | http://www.cefda.com |
## 2. Device information
| Trade name | Cryopush Cold Compression Device (A02-P-001) |
| --- | --- |
| Classification | Ⅱ |
| Classification name | Massager, Powered Inflatable Tube |
| Product code | IRP |
| | IME |
| Regulation No. | 21 CFR 890.5650 |
## 3. Legally Marketed Predicate Device
| Trade Name | Air Compression Therapy Recovery System |
| --- | --- |
| 510(k) Number | K222669 |
| Product Code | IRP, IME |
| Manufacturer | Cryo-Push Medical Technology Co., Ltd |
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Chengdu Cryo-Push Medical Technology Co.,Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
## 4. Device Description
The Cryopush Cold Compression Device consists of a main unit and wraps. Main unit inflates the wrap to a specified pressure of 20 mmHg, 40 mmHg, 60 mmHg, 80 mmHg or 100 mmHg (set by the user), and once the pressure reached the targeted level, it will hold for 10 seconds before releasing, then decompresses and the air pressure drops. The cycle begins again. Default working time is 30 minutes. Built-in rechargeable lithium batteries allow the system to be completely portable for use anytime and anywhere. The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable. When the A02-P-001 is used for a default time of 30 minutes at the operating temperature (5°C~40°C) specified in the user manual, the operating temperature of the cold pack is (-18°C~+2°C) (±2°C).
## 5. Intended use
The Cryopush Cold Compression Device is indicated for the temporary relief of minor muscle aches and pains.
The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap.
The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable.
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Chengdu Cryo-Push Medical Technology Co.,Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
# 6. Substantial Equivalence Comparison
| Item | Proposed Device: | Predicate Device (K222669) | | Comments |
| --- | --- | --- | --- | --- |
| Regulation number | 890.5650 | 890.5650 | | Same |
| Classification | II | II | | Same |
| Model | A02-P-001 | A02-P-001 | A02-P-002 | Same |
| Product Code | IRP, IME | IRP, IME | | Same |
| Intended use/Indications for use | The Cryopush Cold Compression Device is indicated for the temporary relief of minor muscle aches and pains. The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap. The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable. | The Cryopush Cold Compression Device is indicated for the temporary relief of minor muscle aches and pains. The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap. The cold pack is indicated for localized therapy in situations where cold temperature therapy is necessary or desirable. | The Cryopush A02-P-002 is indicated for the temporary relief of minor muscle aches and pains. The device is indicated for temporary increase in circulation of the treated areas in people who are in good health, and simulates kneading and stroking of tissues using by an inflatable wrap. | |
| Treatment area/Structure of Sleeves | Leg (Ankle, Calf and upper leg), Hip, Arm (Hand/wrist, Shoulder, Elbow), Back (Neck, Back, Lower Back) | Low limbs (Calf and upper leg) | | Note 1 |
| OTC or Rx | OTC | OTC | | Same |
| Environment of Use | Clinics, hospital, athlete training, and home environments | Clinics, hospital, athlete training, and home environments | | Same |
| Power source | 100-240V~50/60Hz | 100-240V~50/60Hz | | Same |
| Working Time | 10min, 20 min, 30 min, 40 min, 50 min, 60 min, 70 min, 80 min, 90 min, 100 min, 110 min, 120 min, | 10min, 20 min, 30 min, 40 min, 50 min, 60 min, 70 min, 80 min, 90 min, 100 min, | 10min, 20 min, 30 min, 40 min, 50 min, 60 min, default as 30min | Same |
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Chengdu Cryo-Push Medical Technology Co.,Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
| Item | Proposed Device: | Predicate Device (K222669) | | Comments |
| --- | --- | --- | --- | --- |
| | default as 30min | 110 min, 120 min, default as 30min | | |
| Pressure range | 0-100mmHg | 0-100mmHg | 0~215 mmHg | Same |
| Pressure levels | 20mmHg,40 mmHg,60 mmHg,80 mmHg,100 mmHg. | 20mmHg,40 mmHg,60 mmHg,80 mmHg,100 mmHg. | 100mmHg,160 mmHg,215mmHg; | |
| Pressure error range | ±15mmHg | ±15mmHg | ±20mmHg | |
| Keep time | 10s | 10s | | Same |
| Deflation time | 20s | 20s | | |
| Working process | The pressure of the chamber gradually rises to the pre-determined air pressure level, then decompresses and the air pressure drops. The cycle begins again. | The pressure of the chamber gradually rises to the pre-determined air pressure level, then decompresses and the air pressure drops. The cycle begins again. | Starting with the lower chamber and progressing up the upper chamber, each section compresses and the pressure gradually rise to the pre-determined air pressure level, then decompresses and the air pressure drops. Once the upper chamber decompresses, the cycle begins again. | Same |
| Noise level | ≤ 55dB | ≤ 55dB | | Same |
| Wrap Material | Nylon with a PVC laminate | Nylon with a PVC laminate | | Same |
| Patient contact | Non-conductive attachments | Non-conductive attachments | | Same |
| Appearance | | | | Note 2 |
| Wrap Size | A02-C-020: 330x610mm; A02-P-001-A1: 445x850mm; A02-P-001-B: 515x425mm; A02-P-001-B1: 970x570mm; A02-P-001-B2: 970x570mm; A02-P-001-E: | 330x610mm | 615×255mm | |
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Chengdu Cryo-Push Medical Technology Co.,Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
| Item | Proposed Device: | Predicate Device (K222669) | | Comments |
| --- | --- | --- | --- | --- |
| | 1420x335mm;
A02-P-001-E2(M):
1230x800mm;
A02-P-001-E2(L):
870x1230mm;
A02-P-001-E4:
1210x370mm;
A02-P-001-F:
470x440mm;
A02-P-001-G:
620x325mm;
A02-P-001-J:
1085x480mm. | | | |
| Operating temperature of the cold wrap | (-18°C~+2°C) (±2°C) | (-18°C~-4°C) (±2°C) | | Note 3 |
| Operating environment | Temperature: 5°C ~ 40°C (41°F ~ 104°F)
Relative humidity: 10% ~ 90%
Atmospheric pressure: 700~1060hpa | Temperature: 5°C ~ 40°C (41°F ~ 104°F)
Relative humidity: 10% ~ 90%
Atmospheric pressure: 700~1060hpa | | Same |
| Transportation & Storage environment | Temperature: -25°C ~55°C (-13°F ~131°F)
Relative humidity: 10% ~ 90%
Atmospheric pressure: 700~1060hpa | Temperature: -25°C~55°C (-13°F ~131°F)
Relative humidity: 10% ~ 90%
Atmospheric pressure: 700~1060hpa | | |
Note 1: The treatment areas of the lower limbs are covered by predicate device. The additional treatment areas of the hips, arms, and back do not raise different questions of safety and effectiveness, and lab bench testing demonstrates acceptable safety and performance. These additional treatment areas have also been included in other legally marketed tube massager devices.
Note 2: Although the subject device is different from predicate devices in the wrap size, the difference in design would not adversely impact safety and effectiveness.
Note 3: The operating temperature range of the cold wrap of the subject device is covered by that of the predicate device. The difference does not raise different questions of safety and effectiveness.
The subject device, Cryopush Cold Compression Device, is substantially equivalent to the predicate device. This conclusion is based upon comparison on intended use, technological characteristics and applicable performance standards. Any difference in the technological characteristics does not raise any new issues or concerns of safety or effectiveness.
# 7. Non-clinical Testing
The following data were provided in support of the substantial equivalence determination:
1) Electrical Safety, Electromagnetic Compatibility
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Chengdu Cryo-Push Medical Technology Co.,Ltd
510(k) Summary
Product: Cryopush Cold Compression Device
Version: A/1
IEC 60601-1:2005, AMDI:2012 Medical electrical equipment - Part 1: General requirements for basic safety and essential performance
IEC 60601-1-11:2015 Medical electrical equipment - Part 1-11: General requirements for basic safety and essential performance - Collateral Standard: Requirements for medical electrical equipment and medical electrical systems used in the home healthcare environment
IEC 60601-1-2:2014 Medical electrical equipment -- Part 1-2: General requirements for basic safety and essential performance -- Collateral Standard: Electromagnetic disturbances -- Requirements and tests
IEC 62133-2:2017, IEC 62133-2:2017/AMD: 2021: Secondary cells and batteries containing alkaline or other non-acid electrolytes - Safety requirements for portable sealed secondary cells, and for batteries made from them, for use in portable applications - Part 2: Lithium systems
AIM 7351731 Rev. 3.00: Medical Electrical Equipment and System Electromagnetic Immunity Test for Exposure to Radio Frequency Identification Readers - An AIM Standard
IEEE ANSI C63.18-2014: American National Standard Recommended Practice for an On-Site, Ad Hoc Test Method for Estimating Electromagnetic Immunity of Medical Devices to Radiated Radio-Frequency (RF) Emissions from RF Transmitters
2) Software validation
The software document of the subject device was determined according to Guidance for Industry and FDA Staff- Content of Premarket Submissions for Device Software Functions, issued on June 14, 2023
3) Performance
There are no FDA recognized consensus standards for this device. We tested the following items according to our internal standards,
- Product Appearance and Size
- Wrap Performance and Function Test
- Service life verification
- Atmospheric condition testing
- Stacking test
- Vibration test
- Drop test
- Unpacking and inspection
- Stress resistance
- Air pressure release accuracy, rupture and deformities testing
8. Clinical testing
N/A
9. Other information (such as required by FDA guidance/Test)
N/A
10. Conclusions
Non-clinical testing and technological comparison show that the subject device is substantially equivalent to the legally marketed predicate device.
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.