K990727 · Ela Medical, Inc. · DQK · Nov 26, 1999 · Cardiovascular
Device Facts
Record ID
K990727
Device Name
SYNEFLASH & SYNEVIEW
Applicant
Ela Medical, Inc.
Product Code
DQK · Cardiovascular
Decision Date
Nov 26, 1999
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1425
Device Class
Class 2
Attributes
Software as a Medical Device
Indications for Use
Recording of two- or three-channel surface ECG (Electrocardiogram) data from ambulatory patients during a 24-hour period. High-resolution recording of surface ECG data. Analysis of recorded Holter ECG data.
Device Story
Syneflash™ is a digital ambulatory Holter ECG recorder; Syneview™ is a Windows-based analysis software. Recorder captures 2- or 3-channel surface ECG signals via patient cable; stores data on removable flash-memory cards (10-40 MB). Features include graphic LCD, patient event marker, and pacemaker detection. Syneview™ software runs on IBM-compatible PCs; reads flash cards via reader. Clinicians use software to perform arrhythmia detection, ST-segment analysis, template screening, and report generation. System facilitates diagnostic evaluation of ambulatory ECG data to assist physicians in cardiac rhythm assessment. Used in clinical settings; operated by healthcare professionals.
Clinical Evidence
Bench testing only. System validated using standardized databases: AHA, MIT, ST, and NST per ANSI/AAMI EC38-1994. Safety and environmental testing performed per EN 60601-1, EN 60601-1-2, and ANSI/AAMI EC38-1994. Software verification and unit functional testing completed.
Technological Characteristics
Digital Holter system. Recorder: Polycarbonate/ABS case, flash-memory storage, 200Hz/1000Hz sampling, 2-3 channels. Connectivity: PCMCIA flash card interface. Power: 2x AA batteries. Software: Windows 95/98-based. Standards: EN 60601-1, EN 60601-1-2, ANSI/AAMI EC38-1994.
Indications for Use
Indicated for ambulatory patients requiring 24-hour 2- or 3-channel surface ECG recording, high-resolution ECG recording, and subsequent analysis of recorded data.
Regulatory Classification
Identification
A programmable diagnostic computer is a device that can be programmed to compute various physiologic or blood flow parameters based on the output from one or more electrodes, transducers, or measuring devices; this device includes any associated commercially supplied programs.
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# 2. Summary & Certification
#### 2.1 Summary of safety and effectiveness information
#### 2.1.1 General Information
Device Generic Name: Holter ECG system (recorder and analysis software)
Device Trade Name: Syneflash™ (recorder) and Syneview™ (analysis software)
Applicant's Name and Address: ELA Medical, Inc., 2950 Xenium Lane North, Plymouth, MN 55441, Tel. (612) 519-9400
Date of Summary Preparation: February 26, 1999
Contact Person: Cathy G. Goble
510(k) Number: K990727
Date of Judgment of Substantial Equivalence Sent to Applicant:
Predicate Devices:
For SyneflashI™: BURDICK ALTAIR Disc recorder (510(k) K942565, Burdick Inc.), BRAEMAR DL700 (510(k) K945130, Braemar Inc.) and OXFORD MEDILOG FD4 (510(k) K970902, Oxford Instruments).
For Syneview™: ELA Medical ELATEC (510(k) K895806, ELA Medical Inc.), BURDICK ALTAIR 8200 (510(k) K945985, Burdick Inc.) and REYNOLDS Pathfinder 700 (510(k) K951902, Reynolds Medical Ltd.).
### 2.1.2 Description of Conditions for Which the Devices are Indicated
Generally accepted indications for Holter ECG systems include:
- · Recording of two- or three-channel surface ECG (Electrocardiogram) data from ambulatory patients during a 24-hour period.
- · High-resolution recording of surface ECG data.
- · Analysis of recorded Holter ECG data.
### 2.1.3 Device Description
Syneflash™ is a light-weight digital ambulatory electrocardiogram (ECG) recorder (Holter monitor) equipped with a graphic LCD screen, and using a flash-memory card
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for data storage. It allows 24-hour ambulatory ECG recording and high-resolution recording, using 2 or 3 channels.
Syneflash™ is supplied in a case containing a 10-, 20- or 40-MB flash-memory card, two 1.5-V AA batteries, a carrying case, a strap, a five-lead (or seven-lead) patient cable and a user's manual.
Syneview™ is a Holter ECG analysis software application that allows evaluation of Holter recordings obtained with Syneflash™. Syneview™ is a Microsoft Windows95/98-based application run on an IBM-compatible personal computer equipped with a flash-card reader.
#### 2.1.4 Comparison to predicate devices
Comparison table between ELA MEDICAL SYNEFLASH and predicate recorders:
| HOLTER RECORDER<br>MODEL | SYNEFLASH | MEDILOG FD4 | ALTAIR-DISC<br>RECORDER | DL 700 |
|----------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------|----------------------------------------------------------------------------------------------------|-------------------------------------------|
| COMPANY | ELA MEDICAL | OXFORD<br>INSTRUMENTS<br>MEDICAL SYSTEMS | BURDICK | BRAEMAR |
| 510(k) Number | | K970902 | K942565 | K945130 |
| CE mark (93/42 MDD) | Yes | No | | |
| Type | Digital | Digital | Digital | Digital |
| Analysis | Real Time | Retrospective<br>(on the analyzer) | Retrospective<br>(on the analyzer) | Retrospective<br>(on the analyzer) |
| Record duration | 24H | 24H | 24H | 24H |
| Recording medium | PCMCIA FLASH CARD<br>(10, 20 40 MB) | PCMCIA FLASH CARD<br>(ATA) | Hard disk (170MB) | PCMCIA ATA FLASH<br>CARD (10, 20 40 MB) |
| Signal compression | Yes (delta + variable<br>length bit coding = no<br>notable loss) | Yes | No | Yes |
| CHANNELS | 2 or 3 | 2 or 3 | 2 or 3 | 2 or 3 |
| Sampling Frequency | 200Hz | 512Hz | 200Hz | 128Hz |
| Frequency Response | 0.05Hz to 50Hz in<br>standard mode<br>(extension to 500Hz<br>possible in High<br>Resolution mode) | | 0.05Hz to 100Hz in<br>standard mode<br>(extension to 300Hz<br>possible in High<br>Resolution mode) | |
| Overall<br>Recorder/Analyzer<br>Frequency Response | 0.05Hz to 50Hz in<br>standard mode | 0,05Hz to 40Hz | | |
| Dynamic Range | 10µV to 10 mV | 10µV to 10 mV | 5mV in standard mode<br>(10 mV in High Resolution<br>mode) | |
| Amplitude Resolution | 10µV<br>(2.5µV in High Resolution<br>mode) | | | |
| HOLTER RECORDER<br>MODEL | SYNEFLASH | MEDILOG FD4 | ALTAIR-DISC<br>RECORDER | DL 700 |
| High Resolution mode | Yes<br>(Hi Res or Hi Res +<br>Holter) | No | Yes<br>(Hi Res or Hi Res +<br>Holter) | No |
| High Resolution<br>Sampling Frequency | 1000Hz | | 1000Hz | |
| High Resolution<br>Transfer | By a transferring utility<br>Between Flash Card and<br>PC | | By connection to the PC<br>with an interface. | |
| Setup | With the graphic display +<br>keyboard | By connection to the PC<br>with fiber optical cable | | |
| Verification of the ECG | With the graphic display | By connection to the PC<br>with fiber optical cable | | |
| Test Cable /<br>Impedance check | Yes / Yes | | | |
| CABLE | 5 or 7 wires | 3, 5 or 7 wires | | |
| POWER | 2AA 1.5V Alkaline<br>Batteries<br>(for 2x24H records)<br>or 1x24H record with<br>1.2V NiMh rechargeable<br>batteries (1200mA/H) | 2AA 1.5V Alkaline<br>Batteries or 1.2V NiMh<br>rechargeable batteries | 2 x 9V batteries | 9V batteries |
| Pacemaker Detection | Yes | Yes | Yes | Yes |
| DISPLAY | GRAPHIC LCD | 4 digits (7 segments) LCD<br>display | LCD | LCD |
| Time Displayed | Yes<br>(only during hookup) | Yes | Yes | Yes |
| Carrying case | Strap + pouch | Strap + pouch | | |
| Keyboard | Yes | Yes | Yes | No |
| ON/OFF Button | Yes | Yes | | No |
| Sound | Yes<br>(Buzzer) | Yes | | |
| Patient event marker | Yes<br>(resolution at sampling<br>frequency) | Yes<br>(resolution at sampling<br>frequency) | | Yes |
| Case | Polycarbonate / ABS | Polycarbonate / ABS | | |
| Replay and Analysis<br>system | SYNEVIEW | OXFORD OPTIMA &<br>EXCEL | BURDICK ALTAIR 8200 | REYNOLDS<br>PATHFINDER 700 and<br>others. |
| Weight | 290g with batteries and<br>flash card | 310g with batteries and<br>flash card | 425g | |
| Dimensions | 130x90x25mm | 120x90x40mm | 129x91x32mm | |
| HOLTER RECORDER<br>MODEL | SYNEFLASH | MEDILOG FD4 | ALTAIR-DISC<br>RECORDER | DL 700 |
| Operating temperature | 0°C to 50°C | 0°C to 45°C | | |
| Storage temperature | -15°C to 60°C | | | |
| Humidity | 85% (at 20°C) | 10-95% non condensing | | |
| Firmware Upgrade | Yes | Yes | | |
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# Comparison table between ELA MEDICAL SYNEVIEW and predicate analyzers:
| HOLTER ANALYZER<br>MODEL | SYNEVIEW | ELATEC | ALTAIR 8200 | PATHFINDER 700 |
|---------------------------------|----------------------------------------------|------------------------------------------------|--------------------------------------------------------------|---------------------------------------------------------------|
| COMPANY | ELA MEDICAL | ELA MEDICAL | BURDICK | REYNOLDS<br>MEDICAL |
| 510(k) Number | | K895806 | K945985 | K951902 |
| CE / MDD certification | Yes | No | | |
| Type | Holter Analyzer (Software) | Holter Analyzer | Holter Analyzer | Holter Analyzer |
| Read digital / tape | Digital (dedicated to<br>SyneFlash recorder) | Standard 1mm/s tape<br>(and 1,5mm/s, 2mm/tape) | Digital (Burdick Disc<br>recorder only) and<br>Standard Tape | Digital (Braemar DL700<br>REYNOLDS eRAM)<br>and Standard Tape |
| PC based | Yes | Yes | Yes | Yes (+transputer) |
| PCMCIA interface<br>compatible | Yes | No | No | Yes |
| Operating System | Microsoft Windows 95 or 98 | Microsoft DOS | Microsoft DOS | Microsoft DOS |
| Graphic User Interface<br>(GUI) | Yes | Yes | Yes | Yes |
| Network | Yes | No | | |
| Re-analysis | No | Yes | Yes | Yes |
| Events list edition | Yes | No | No | No |
| Arrhythmia detection | Yes | Yes | Yes | Yes |
| ST | Yes | Yes | Yes | Yes |
| Templates screen | Yes | Yes | Yes | Yes |
| Superimposition | Yes | Yes | Yes | Yes |
| Pacemaker detection | Yes | Yes | Yes | Yes |
| Editing report | Yes | Yes | Yes | Yes |
| Customized report | Yes | Yes | Yes | Yes |
| Archiving | Yes | Yes | Yes | Yes |
| Printing ECG strip | Yes | Yes | Yes | Yes |
| Printing Full Disclosure | Yes | Yes | Yes | Yes |
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#### 2.1.5 Alternatives
The alternatives for Syneflash™ and Syneview™ are other commercially available Holter ECG systems.
#### 2.1.6 Marketing History
Syneflash™ and Syneview™ are not in commercial distribution in the U.S. They were recently introduced into commercial distribution outside the U.S (April 1997 for Syneview™, March 1998 for Syneflash™). No unanticipated adverse device effects have been reported for this Holter ECG system.
#### 2.1.7 Potential Adverse Effects
As Holter ECG systems are diagnostic devices, there are no potential adverse effects or complications related to this type of device.
#### 2.1.8 Summary of Studies
The following in-vitro functional testing was performed on the Syneflash™ / Syneview™ Holter ECG system:
| Test group | Tests |
|---------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Syneflash™ safety testing | Environmental and safety tests, including EMC<br>(Electromagnetic Compatibility) tests, according to<br>the EN 60601-1, EN 60601-1-2 and ANSI/AAMI<br>EC38-1994 standards |
| Syneview™ database<br>testing | Database testing according to the ANSI/AAMI<br>EC38-1994 standard using the following databases:<br>• AHA (American Heart Association),<br>• MIT (Massachusetts Institute of Technology),<br>• ST (European database on ST segment)<br>• NST (Noise Stress Test) |
| Syneflash™ / Syneview™<br>software validation and<br>verification testing | Unit and functional testing for both Syneflash™<br>and Syneview™ software applications |
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#### 2.1.9 Conclusion
The information presented in this submission provides reasonable assurance that the Syneflash™ / Syneview™ Holter ECG system will perform in a safe and effective manner.
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Image /page/6/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is a stylized image of an eagle with its wings spread.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 26 1999
Ms. Catherine G. Goble ELA Medical, Inc. 2950 Xenium Lane North Plymouth, MN 55441
Re: K990727 Syneflash™ and Syneview™ Holter ECG System Regulatory Class: II (two) Product Code: 74 DQK October 25, 1999 Dated: Received: October 26, 1999
Dear Ms. Goble:
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 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). You may, therefore, market the device, 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 device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Requlation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic OS inspections, the Food and Drug Administration (FDA) will verify such Failure to comply with the GMP regulation may result in assumptions. 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 regulations.
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#### Page 2 - Ms. Catherine G. Goble
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 requlation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification"(21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597, or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Carole C. Carey
Celia M. Witten, Ph.D. Acting Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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# K990727
#### 1.10 Indications for Use Statement
#### 510 (k) Number:
Device Name: Syneflash™ / Syneview™ Holter ECG system.
Indications for Use:
- · Recording of two- or three-channel surface ECG (Electrocardiogram) data from ambulatory patients during a 24-hour period.
- · High-resolution recording of surface ECG data.
- · Analysis of recorded Holter ECG data.
## Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use
OR
Over-The-Counter Use **__**
(Per 21 CFR 801.109)
":
#### ELA Medical Incorporated
#### Confidential and Proprietary
-7-
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.