K032519 · Itamar Medical · DQK · Nov 12, 2003 · Cardiovascular
Device Facts
Record ID
K032519
Device Name
ENDO PAT 2000
Applicant
Itamar Medical
Product Code
DQK · Cardiovascular
Decision Date
Nov 12, 2003
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.1425
Device Class
Class 2
Indications for Use
The Endo PAT 2000 device is a non-invasive device, intended for use as a diagnostic aid in the detection of coronary artery Endothelial Dysfunction (positive or negative) using a reactive hyperemia procedure. The Endo PAT 2000 has been shown to be predictive of coronary artery Endothelial Dysfunction in the following patient population: patients with signs or symptoms of ischemic heart disease, who are indicated for coronary artery angiography, but who lack angiographic evidence of obstructive coronary artery disease. The device is intended to be used in a hospital or clinic environment by competent health professionals. The Endo PAT 2000 device is not intended for use as a screening test in the general patient population. It is intended to supplement, not substitute, the physician's decision-making process. It should be used in conjunction with knowledge of the patient's history and other clinical findings.
Device Story
Endo PAT 2000 is a non-invasive diagnostic aid for coronary artery endothelial dysfunction. System inputs: pressure fluctuations from pulsating digital arteries sensed via two thimble-shaped finger probes. Main control unit processes signals; connected to PC/laptop via RS-232 for display, archiving, and analysis. Used in hospital/clinic by health professionals. Device measures Peripheral Arterial Tone (PAT) changes during reactive hyperemia. Output: diagnostic data regarding endothelial function. Clinicians use output to supplement clinical decision-making for patients with suspected ischemic heart disease lacking obstructive coronary artery disease. Benefits: provides non-invasive assessment of endothelial function, reducing reliance on invasive procedures.
Clinical Evidence
Clinical study compared Endo PAT 2000 to the gold standard Intra-coronary Acetylcholine (Ach) Challenge method. Population: patients referred for diagnostic angiography due to ischemic heart disease symptoms but lacking obstructive coronary artery disease. Study evaluated PAT changes at the fingertip during reactive hyperemia. Results demonstrated acceptable sensitivity and specificity; no adverse events reported.
Technological Characteristics
System includes main control unit, finger probes, and PC software. Sensing principle: pressure fluctuations in distal compartment of finger probes induced by digital artery volume changes. Connectivity: RS-232 interface between control unit and PC. Embedded system uses 8257 micro-controller. Complies with IEC 60601-1 and IEC 60601-1-2 standards.
Indications for Use
Indicated for patients with signs or symptoms of ischemic heart disease, scheduled for coronary angiography, but lacking angiographic evidence of obstructive coronary artery disease. Not for general population screening.
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.
Flow Mediated Dilation (FMD) response to reactive hyperemia
Submission Summary (Full Text)
{0}------------------------------------------------
NOV 1 2 2003
# 510(K) SUMMARY
# ITAMAR MEDICAL
#### 510(k) Number K032519
### Applicant's Name:
Itamar Medical Ltd. 2 Haeshel St., P.O.Box 3579 Caesarea 38900, Israel Tel + 972 4 6177000 Fax + 972 4 6275598 e-mail: itamar-medical.com
# Contact Person:
Dorit Winitz, Ph. D. Push-Med Ltd. 117, Ahuza St., Ra'ananna 43373, Israel Tel: (972) 9 771-8130 Fax: (972) 9 771-8131 e-mail: dorit@push-med.com
#### Date Prepared:
August 2003
# Trade Name:
Endo PAT 2000
#### Classification Name:
Programmable Diagnostic Computer
## Classification:
Product Code: 74 DQK Regulation No: 870.1425 Class: II Panel: Cardiovascular
#### Predicate Device:
- PAT 1000 RD (Itamar Medical Ltd.), cleared under K001852 목
- I Standard Procedures used for Endothelial Dysfunction evaluation:
-The Intra-coronary Acetylcholine (Ach) Challenge method ("Gold Standard")
-The method of Flow Mediated Dilation (FMD) response to reactive hyperemia of the brachial artery
{1}------------------------------------------------
K032519
p.2/3
#### Performance Standards:
No performance standards have been established for such a device under Section 514 of the Federal Food, Drug, and Cosmetic Act. However, the Endo PAT 2000 complies with the following voluntary standards:
-IEC 60601-1:1988+A1:1991+A2:1995 -IEC 60601-1-2:1993
### Intended Use / Indications for Use:
The Endo PAT 2000 device is a non-invasive device, intended for use as a diagnostic aid in the detection of coronary artery Endothelial Dysfunction (positive or negative) using a reactive hyperemia procedure.
The Endo PAT 2000 has been shown to be predictive of coronary artery Endothelial Dysfunction in the following patient population: patients with signs or symptoms of ischemic heart disease, who are indicated for coronary artery angiography, but who lack angiographic evidence of obstructive coronary artery disease. The device is intended to be used in a hospital or clinic environment by competent health professionals
The Endo PAT 2000 device is not intended for use as a screening test in the general patient population. It is intended to supplement, not substitute, the physician's decision-making process. It should be used in conjunction with knowledge of the patient's history and other clinical findings.
#### Device Description:
The Endo PAT 2000 consists of a main control unit, finger probes and tubing and a software package. The Endo PAT 2000 main control unit is connected to two independent, thimble-shaped, finger mountable probes via two air-conducting tubes. A standard PC or Laptop is connected to the Endo PAT 2000 main control unit for on line display and archiving of device recordings and off line analysis. The output of the Endo PAT 2000 probe are pressure fluctuations sensed at its distal compartment induced by the volume changes of the pulsating digital arteries.
{2}------------------------------------------------
The Endo PAT 2000 system consists of two separate platforms connected by RS-232 channels:
- A PC platform running the custom "Endo PAT 2000 application . program"
- An Endo PAT 2000 Main Control Unit with a micro-controller (8257) . running a custom embedded program
# Clinical Study:
The safety and effectiveness of the Endo PAT 2000 as an aiding tool in the diagnosis of coronary artery Endothelial Dysfunction were evaluated versus a Gold Standard for Endothelial Dysfunction evaluation, the Intracoronary Acetylcholine (Ach) Challenge method.
The reference method is an Intra-coronary procedure, which incorporates measurements of of endothelium-dependent and endothelium-independent coronary flow reserve, calculated as the percentage change in coronary blood flow (CBF) and coronary artery diameter (CAD) in response to the Ach challenge.
Study population included intent to treat patients, who had been referred to the cardiac catheterization laboratory for diagnostic angiography secondary to signs or symptoms of ischemic heart disease and suspected coronary endothelial dysfunction, but who showed no angiographic evidence of obstructive coronary artery disease, and who underwent Intra-Coronary Acetylcholine (Ach) challenge test.
Patients were then evaluated using the Endo PAT 2000, which measures Peripheral Arterial Tone (PAT) changes at the fingertip, to a reactive hyperemia challenge.
Study results demonstrate that the Endo-PAT2000 is safe and effective for its intended use, as a statistical analysis of the study results showed acceptable sensitivity and specificity in a comparative study to a Gold Standard procedure, and no adverse events related to the device were reported.
# Substantial Equivalence:
Itamar Medical Ltd. believes that, based on verification, validations, and safety and performance testing results, the Endo PAT 2000 device is substantially equivalent to its predicate device and to the standard procedures cited above without raising new safety and/or effectiveness issues.
{3}------------------------------------------------
Image /page/3/Picture/1 description: The image is a black and white logo for the Department of Health & Human Services - USA. The logo features a stylized eagle head in profile, facing left, with three curved lines above it, representing the eagle's wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular fashion around the eagle, with the words following the curve of the circle.
Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
NOV 1 2 2003
Itamar Medical, Ltd. c/o Dorit Winitz, Ph.D. Project Manager Push-med Ltd. 117 Ahuzah Street Ra' ananna 43373 ISRAEL
Re: K032519
Trade Name: Endo PAT 2000 Regulation Number: 21 CFR 870.1425 Regulation Name: Programmable Diagnostic Computer Regulatory Class: Class II (two) Product Code: DOK Dated: August 13, 2003 Received: August 15, 2003
Dear Dr. Winitz:
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.
{4}------------------------------------------------
Page 2 - Dorit Winitz, Ph.D.
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); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050. This letter will allow you to begin marketing your device as described in your Section 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please contact the Office of Compliance at (301) 594-4646. 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/dsma/dsmamain.html
Sincerely yours,
Megasnap
Bram D. Z uckerman, M.D. Director Division of Cardiovascular Devices. Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
# INDICATIONS FOR USE STATEMENT
#### (if K032519 Number 510(k) known):
Device Name: Endo PAT 2000
The Endo-PAT2000 device is a non-invasive device, Indications for Use: intended for use as a diagnostic aid in the detection of coronary artery Endothelial Dysfunction (positive or negative) using a reactive hyperemia procedure.
> The Endo-PAT2000 has been shown to be predictive of coronary artery Endothelial Dysfunction in the following patient population: patients with signs or symptoms of ischemic heart disease, who are indicated for coronary artery angiography, but who lack angiographic evidence of obstructive coronary artery disease. The device is intended to be used in a hospital or clinic environment by competent health professionals
> The Endo-PAT2000 device is not intended for use as a screening test in the general patient population. It is intended to supplement, not substitute, the physician's decision-making process. It should be used in conjunction with knowledge of the patient's history and other clinical findings.
(PLEASE DO NOT WRITE BELOW THIS LINE -CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)

(Division Sign-Off)
510(k) Number Division of Cardiovascular Devices
| 510(k) Number | K032519 |
|---------------|---------|
|---------------|---------|
| Prescription Use | OR | Over the Counter Use |
|----------------------|----|----------------------|
| (Per 21 CFR 801.109) | | |
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.