The CardioSoft PC ECG is intended for use in acquiring, processing, recording, archiving and displaying electrocardiographic information. It can provide serial comparison of ECG information to facilitate review of current and previous records and is intended for use by trained operators. The system offers no diagnostic opinion to the user, but may be used by a physician to render his or her own medical opinion.
Device Story
CardioSoft PC ECG is a portable electrocardiograph system; acquires, processes, records, archives, and displays 3-, 6-, or 12-lead ECG and vector cardiograms. System consists of a USB hardware module connected to a PC running Windows OS. Operates by collecting cardiac signals via skin electrodes; uses preamplifiers with electrical isolation (DC/DC converter and optocoupler) to ensure patient safety. Intended for use by trained operators in clinical settings; provides graphical ECG records for physician review. System offers no automated diagnostic opinion; facilitates serial comparison of current and previous records to assist clinical decision-making. Benefits include portability and improved frequency response compared to traditional ECG machines.
Clinical Evidence
Bench testing only. Non-clinical performance testing demonstrated equivalence to the predicate device. Quality assurance measures included requirements specification reviews, code inspections, software/hardware evaluation, safety testing, environmental testing, and final validation. Compliance with IEC 60601-1, IEC 60601-1-2, IEC 60601-2-25, IEC 60601-2-27, ECS53, EC38, and UL 2601-1 standards confirmed.
Technological Characteristics
PC-based electrocardiograph; USB hardware module interface; 3-, 6-, or 12-lead ECG and vector cardiogram acquisition. Features electrical isolation via DC/DC converter and optocoupler. Complies with IEC 60601-1, IEC 60601-1-2, IEC 60601-2-25, IEC 60601-2-27, ECS53, EC38, and UL 2601-1. Software adapted for Windows OS. No energy delivered to patient.
Indications for Use
Indicated for use by trained operators to acquire, process, record, archive, and display 3-, 6-, or 12-lead ECG and vector cardiograms for patients requiring cardiac activity monitoring. Used by or on the order of a physician to assist in diagnosing cardiac abnormalities, determining response to drug therapy, and revealing changes in heart function.
Regulatory Classification
Identification
An electrocardiograph is a device used to process the electrical signal transmitted through two or more electrocardiograph electrodes and to produce a visual display of the electrical signal produced by the heart.
{0}------------------------------------------------
K052295
Corporate Office: 1776 Yorktown Ste LL30 Houston, Texas 77056
Image /page/0/Picture/2 description: The image shows the CardioSoft logo. The logo consists of a circular shape that is black on the bottom and white on the top. The word "CardioSoft" is written in a simple font below the circular shape.
(713) 623-4009 Phone: (713) 623.4003 Fax:
# JAN 1 3 2006
# 510(K) SUMMARY
Applicant's Name:
CardioSoft, LP 1776 Yorktown Street, Suite LL30 Houston, Texas 77056
Tel: 713-623-4009 Tel: 713-623-4009 corporate@CardioSoft.com
Contact Person: Saeed Moradi, Vice-President
Summary Prepared: July 15, 2005
CardioSoft® PC ECG Proprietary Name:
Classification Name: Electrocardiograph
Classification Name: & 870.2340, Electrocardiograph Product Code: DPS, Class II
Establishment Registration No .: 3003786840
Predicate Device(s): The CardioSoft PC ECG is substantially equivalent to the CARDIAX device, K924544 (Imed / Fairlake Marketing Group) [predicated on the MICROMED QRS-CARD], cleared by prior 510(K) Premarket Notification, in terms of intended use, indications for use, technological characteristics, performance and user interface. The predicate is a Class II device.
- Standards: The CardioSoft PC ECG complies with the following recognized voluntary and consensus standards: IEC 60601-1:1988 and amendments, IEC 60601-1-2:2001, IEC 60601-2-25:1999 and amendment, IEC 60601-2-27:1994, ECS53:1995, EC38:1998, UL 2601-1, ANSI/UL 2601-1 ad CAN/CSA C22.2
The device also complies with 21 CFR Parts 801 and 820 for labeling and GMP, and with 21 CFR 898 for electrode lead wires and patient cables.
000009
{1}------------------------------------------------
CARDIOSOFT PC ECG
### 510(K) SUMMARY
510(K) SUMMARY
1.214
The CardioSoft PC ECG is intended for use in acquiring,
processing, recording, archiving and displaying
electrocardiographic information. It can provide serial
electrocardiographic information. It can provide serial comparison of ECG information to facilitate review of current and previous records and is intended for use by trained operators. The system offers no diagnostic opinion to the user, but may be used by a physician to render his or her own medical opinion.
The CardioSoft PC ECG is an electrocardiograph that Device Description: detects signals associated with cardiac activity and produces an ECG graphical record. The device operates on a personal computer through a USB hardware module. The device can acquire, process, record, archive and display 3-, 6-, or 12-lead ECG and vector cardiograms. The device provides portable ECG with important advantages compared to traditional machines.
> The system requires a USB connection and Windows® operating system and is intended for use by trained operators. It is intended for use by or on the order of a physician or other qualified health care professional.
ECGs are routinely used to diagnose cardiac abnormalities, determine response todrug therapy, and reveal changes in heart function. The ECG record data may be utilized only by a qualified healthcare professional for review and interpretation when based upon patient history, medical examination, and other clinical findings.
Technology:
Intended Use /
Indications for Use
The CardioSoft PC ECG employs the same functional technology as the predicate device. The only differences are technological improvements made with respect to
{2}------------------------------------------------
#### 510(K) SUMMARY
USB interface, greater frequency response, and use with current Windows® operating systems.
Both devices utilize preamplifiers to collect electrocardiographic information from skin electrodes. The preamplifiers provide electrical isolation of the patient and the device. There are differences in two components that provide electrical isolation. The proposed device uses a different isolation DC/DC converter (made by Recom) and optocoupler (made by Hewlett Packard) than the predicate device. The proposed device utilizes an integrated USB module and provides improved frequency response. Both devices are in compliance with electromagnetic compatibility conformance and electrical and thermal safety compliance by the applicable standards. No energy is delivery to the patient. The enhancements have no effect on safety or performance.
The software processes of the predicate device have been fully preserved in the proposed device and have been adapted for use with the latest versions of the Windows® operating system. Generated data is identical, however the proposed device allows the user to more aptly configure screen display and printer output to a desired format. The enhancements have no effect on safety or performance.
{3}------------------------------------------------
#### 510(K) SUMMARY
Performance:
The FDA has not established performance standards for this device. A listing of voluntary or consensus standards is provided in SECTION O - APPENDIX: Attach 5 -CARDIOSOFT PC ECG (USB version) STANDARDS TEST REPORT.
Non-clinical testing has been performed demonstrating equivalence with the predicate device CARDIAX and the results show similar performance with this device. Conformance to the product development procedures and plans have been assured by the application of system tests, design reviews, and product verification and validation testing performed prior to product release.
The following quality assurance measures were applied to the development of the CardioSoft PC ECG :
- Requirements specification reviews o
- Code inspections o
- Software and hardware evaluation and testing 0
- Safety testing o
- Environment testing 0
- Final validation O
Conclusion:
The CardioSoft PC ECG is an upgrade modification to the predicate device CARDIAX of like design and manufacture. This premarket notification submission demonstrates that the CardioSoft PC ECG is substantially equivalent because this device has the same basic intended use and the differences in technological characteristics do not raise new questions of safety or effectiveness. The CardioSoft PC ECG is as safe, as effective, and performs as well as the predicate device.
{4}------------------------------------------------
DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/4/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized caduceus, which is a symbol often associated with medicine and healthcare. The words "DEPARTMENT OF HEALTH AND HUMAN SERVICES - USA" are arranged in a circular pattern around the caduceus.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JAN 1 3 2006
CardioSoft, LP c/o Mr. Saeed Moradi Vice-President 1776 Yorktown Street, Suite LL30 Houston, Texas 77056
Re: K052295
Trade Name: CardioSoft PC ECG Regulation Number: 21 CFR 870.2340 Regulation Name: Electrocardiograph Regulatory Class: Class II (two) Product Code: DPS Dated: October 24, 2005 Received: November 18, 2005
Dear Mr. Moradi:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. 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 (PMA), 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 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
{5}------------------------------------------------
# Page 2 - Mr. Saeed Moradi
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 or any I with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. product reastill allow you to begin marketing your device as described in your Section 510(k) I mis lotter with and w yourse by a finding of substantial equivalence of your device to a legally premated 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), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours.
Bhiminimo for
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{6}------------------------------------------------
Indications for Use
K052295 510(k) # (if known):
Device Name: CARDIOSOFT PC ECG
Indications for Use:
The CardioSoft PC ECG is intended for use in acquiring, processing, recording, archiving and displaying electrocardiographic information. It can provide serial comparison of ECG information to facilitate review of current and previous records and is intended for use by trained operators. The system offers no diagnostic opinion to the user, but may be used by a physician to render his or her own medical opinion.
Prescription Use x (21 CFR 801 Subpart D) AND/OR
Over-the-Counter Use (21 CFR 801 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE -- CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Brimmer
Division sign-Off
Division of Cardiovascular Devices
510(k) Number Kns2295
000007
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
Learn the FDA Browser
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.