To spot check or monitor Oxygen saturation of arterial hemoglobin (SpO2%) and pulse rate. To analyze the pulse waveform (Photoelectrical Plethysmography or PP) provided by the oximeter. It only provides mathematical analyses of the input of the SpO2 measurement. To analyze the basic rhythms of the NN or RR intervals in heart rate, both in the time domain and in the frequency domain (short time 5 minutes). It only provides mathematical analyses of the input of the heart rate variability. The mathematical analysis of Photoelectrical Plethysmography and HRV are not intended use for diagnosis. The software provides a visual alarm for the values of the heart rate and/or SpO2 percent out of the normal range and for the bad quality signal transmission. The data are stored in PC in the Backup system of the ESO software. The device is intended use only for adult subjects (> 20 years old) This Oximeter is intended to be used in spot-checking (5 minutes) The device is intended use in licensed practitioner's office This device is no intended to be used at home, in hospital or out-of-hospital transport The device is not intended use in support life and not for continuously monitoring The system will be use by practitioner.
Device Story
E.S.O. (Electro Sensor Oxi) is a USB-connected hardware device with a reusable adult SpO2 probe and PC-based software. It captures pulse oximetry signals to derive SpO2, pulse rate, and pulse waveform data. The system performs mathematical analysis of the photoelectrical plethysmograph (PP) and heart rate variability (HRV) in time and frequency domains. Used by practitioners in office settings for 5-minute spot checks; it provides visual alarms for out-of-range values or poor signal quality. Data is stored on a PC. The device aids clinical assessment by providing non-diagnostic mathematical analysis of pulse rhythms and oxygenation, intended for adult patients. It does not support life or provide continuous monitoring.
Clinical Evidence
No clinical validation required. Bench testing included calibration tests using an oximeter simulator, software verification using the MIT-BIH database, and adherence to IEC 60601-1-1 and IEC 60601-1-2 standards. Peer-reviewed literature was cited to support the mathematical analysis methods for photoelectrical plethysmography and HRV.
Technological Characteristics
USB-connected hardware with reusable adult SpO2 probe. Operates via photoelectrical plethysmography. Software performs mathematical analysis of pulse waveforms and HRV. Complies with ISO 9919, IEC 60601-1-1, and IEC 60601-1-2. Connectivity via USB to PC. Software algorithm performs signal processing for SpO2 and HRV analysis.
Indications for Use
Indicated for adult subjects (> 20 years old) for spot-checking SpO2 and pulse rate in a licensed practitioner's office. Contraindicated for patients undergoing external defibrillation, those with implanted electronic devices or life support, pregnant women, or use in the presence of MRI, CT, or flammable anesthetics.
Regulatory Classification
Identification
An oximeter is a device used to transmit radiation at a known wavelength(s) through blood and to measure the blood oxygen saturation based on the amount of reflected or scattered radiation. It may be used alone or in conjunction with a fiberoptic oximeter catheter.
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K102442 Pg. 1 of 1
# SEP 1 0 2010
## L.D Technology LLC.
510(k) Premarket Notification Number: Preparation date: July, 02 2010
#### 510(k) Summary Electro Sensor Oxi / E.S.O
Name of the device: Electro Sensor Oxi Common name: E.S.O Pulse oximeter/Photoelectrical Plethysmograph/Heart Rate variability Regulation number: 21 CFR 870 2700 Product Codc: DQA Classification: Class II Classification Advisory: Cardiovascular/Anesthesiology
# This summary of 510(k) safety and effectiveness information is submitted in accordance with the requirements of 21 CFR §807.92
#### 1. Submitter's Identification:
Manufacturer: L.D TECHNOLOGY Owner of LD Technology: MAAREK Albert Address: L.D Technology 100 N.Biscayne Blvd, Suite 500 . Miami, FL, 33132, USA Tel: 305-379-9900 E mail: albert.ldteck@gmail.com
#### 2. Device Name / Classification
Electro Sensor Oxi System components : 21 CFR 870 2700 Product Code: DQA Classification: Class II Classification Panel: Cardiovascular /Anesthesiology
#### 3. Predicate legally marketed device
5. Fredicate regally marketed avile
Electro Sensor Teck (Model PEMS) K083229 Applicant: LD Technology LLC Product code MW. 4. Device Description
4. Device Description
- USB plug and play hardware device including an electronic box and reusable Adult SpO2 probe ●
- Software installed on a computer.
{1}------------------------------------------------
#### Description of the features
- Displays SpO2%, pulse rate value and vertical bar graph pulse amplitude. .
- Mathematical analysis of the pulse waveform (photoelectrical Plethysmograph' feature). .
- Mathematical analysis of the Heart Rate Variability (HRV 'feature). .
#### 5. Intended use and indications for use
- To spot check or monitor Oxygen saturation of arterial hemoglobin (SpO2%) and pulse rate. .
- To analyze the pulse waveform (Photoelectrical Plethysmography or PP) provided by the . oximeter. It only provides mathematical analyses of the input of the SpO2 measurement.
- To analyze the basic rhythms of the NN or RR intervals in heart rate, both in the time . domain and in the frequency domain (short time 5 minutes). It only provides mathematical analyses of the input of the heart rate variability.
The mathematical analysis of Photoelectrical Plethysmography and HRV ARE NOT intended use for diagnosis.
The software provides a visual alarm for the values of the heart rate and/or SpO2 percent out of the normal range and for the bad quality signal transmission.
The data are stored in PC in the Backup system of the ES Teck software.
The device is intended use only for adult subjects (> 20 years old)
This Oximeter is intended to be used in spot-checking (2 minutes)
The device is intended use in licensed practitioner's office
This device is no intended to be used at home, in hospital or out-of-hospital transport The device is not intended use in support life and not for continuously monitoring The system will be use by practitioner.
The system will be use by practitioner.
# 6. Performances, specifications and materials
Technical specifications I.e. Device description
## Software specifications
The system carries out the following operations:
Image /page/1/Figure/20 description: The image shows a block diagram of a system. The diagram includes blocks labeled "HARDWARE", "PROTOCOL COMMUNICATION", "SpO2 %", "Pulse wave", "Photoelectrical plethysmography analysis", "Heart rate", "Heart rate variability analysis", and "BACK UP". Arrows connect the blocks to show the flow of information.
2
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K102442 Pg 3 of 5
## 7. Contra-indications
- Patients undergoing external defibrillation .
- Patients connected to electronic life support devices, or any implanted electronic device. .
- Do not use this device in the presence of magnetic resonance imaging (MR or MRI) . equipment. MRI equipment may cause induced current to the SpO2 sensor resulting in patient injury.
- This device should not be used on pregnant women. The effects on the fetus, as well as . accuracy of readings are unknown.
- . When using the finger probe, utilize the arm not in use for blood pressures, arterial lines, or having an AV fistula or pressure dressing.
- Dyes introduced into the bloodstream, such as methylene blue, indocyanine green, indigo . carmine, and fluorescein
- Significant levels of dysfunctional hemoglobins, such as carboxyhemoglogin or . methhemoglobin, will affect the accuracy of the SpO2 measurement.
- Any condition that restricts blood flow, such as use of a blood pressure cuff or extremes . in systemic vascular resistance, may cause an inability to determine accurate pulse rate and SpO2 readings
- Operation of this device may be adversely affected in the presence of strong . electromagnetic sources, such as electro surgery equipment.
- Operation of this device may be adversely affected in the presence of computed . tomography (CT) equipment.
- Do not use this device in the presence of flammable anaesthetics; a spark hazard exists . which may result in explosion.
- Fingernail polish or false fingernails: Fingernail polish or false fingernails may cause . inaccurate SpO2 readings.
## 8. Undesirable side effects:
Side effects or adverse reactions are none known to date.
#### 9. Substantial equivalence
## Predicate legally marketed device
Freureate regaily mai Reted device
Electro Sensor Teck (Model PEMS) K083229 Applicant: LD Technology LLC. Product code MWI
#### Similarities:
- Substantial equivalence
- Same intended use
- Same technological characteristics as the predicate device
- √ Same safety and effectiveness
# New characteristic:
- V The Heart rate detection comes from the oximeter wave form analysis (a/a from SDPTG) and not from the EKG device.
I . . .
{3}------------------------------------------------
# 11. Performances and Effectiveness
1. Calibration tests (simulator oximeter)
2. The OEM subcontractor provided the oximeter, sensor, cable connections and software code source and they were cleared for use together.
16102442 Pa 4 of 5
3. Software verification (SRS/SDS/STD/STR/ Software algorithms tests with input data from the MIT-BIH database)
4. Peer reviews for the photoelectrical plethysmography mathematical analysis.
5. Peer review reference for the heart rate variability mathematical analysis.
Discussion of Clinical Test performed for the E.S.O:
Since the ES Teck do not required clinical tests.
The HRV and photoelectrical plethysmography analysis are only mathematical analysis and have not been approved by FDA for a specific clinical diagnosis in any device, so that is for reference only, therefore, no clinical validation is required for E.S.O.
Use of the published clinical investigations of the photoelectrical plethysmography and HRV mathematical analysis:
For interpretation of the results we use some published clinical investigations. These clinical investigations had been made with materials using the same technology (Pulse oximeter) and the same anatomical site (fingertip).
The fact to detect the heart rate from the oximeter wave form analysis and not from the EKG module does not affect the performances and the effectiveness of the E.S.O as shown by the peer review and comparative testing between EKG RR intervals (from predicate device) and SP02 RR intervals (from E.S.O) in one hand, and in second hand, comparative HRV analysis results from the predicate device and E.S.O.
12. General Safety Concerns
The fact to remove the EKG PCB does not change the general safety to the legally marketed predicate device as shown in the laboratory tests reports of the E.S.O. system (IEC 60601-1-2 and IEC 60601-1-1).
#### 13. Standards
AAMI EC57-1998(R) 2003 Testing and Reporting Performance Results of Cardiac Rhythm and ST-Segment Measurement Algorithms
IEC60601-1-1 Issued: 2000/12/14 Ed: 2 Part 1-1: General requirements for safety -Collateral standard: Safety requirements for medical electrical systems
Conateral standard. Daret Todaller. 2 Medical Electrical Equipment Part 1-2: General IDC 00001 P D Issued. Doollateral Standard: Electromagnetic Compatibility - Req. and Tests - Including Section 6 manual review
ISO9919 (From OEM subcontractor) Issued: 2005/03/15 Ed: 2 Medical electrical 1309717 (1 rom OBM sabellings for the basic safety and essential performance of pulse oximeter equipment for medical use
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K102442 Pg 5 of 5
# Conclusions
E.S.O is equivalent in performances, technology, safety and efficacy to the legally marketed predicate device.
Signature:
Image /page/4/Picture/4 description: The image shows a black and white photograph of what appears to be a field or landscape. There are several rows of what could be crops or plants, and they are arranged in a linear fashion. The image quality is not very clear, and the details are difficult to discern.
Albert MAAREK
Premarket notification [510K] Number: K102442
{5}------------------------------------------------
# DEPARTMENT OF HEALTH & HUMAN SERVICES
Image /page/5/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a stylized eagle with three stripes representing the department's mission. The eagle is positioned within a circular border. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged around the border of the circle.
#### Public Health Service
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
L.D. Technology, Inc. c/o Mr. Mark Job Regulatory Technology Services, LLC Responsible Third Party Official 1394 25th Street, NW Buffalo, Minnesota 55313
SEP 1 0 2010
K102442 Re:
> Trade/Device Name: E.S.O. (Electro Sensor Oxi) Regulatory Number: 21 CFR 870.2700 Regulation Name: Oximeter Regulatory Class: II (two) Product Code: 74 DQA, MWI Dated: August 25, 2010 Received: August 26, 2010
Dear Mr. Job:
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 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.
{6}------------------------------------------------
# Page 2 - Mr. Mark Job
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 803); 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.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please go to http://www.fda.gov/AboutFDA/CentersOffices/CDRHOffices/ucm115809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm for the CDRH's Office of Surveillance and Biometrics/Division of Postmarket Surveillance.
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) 796-7100 or at its Internet address http://www.fda.gov/MedicalDevices/Resourcesfor You/Industry/default.htm.
Sincerely yours,
WMad
Bram D. Zuckerman, M.D. Director
Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{7}------------------------------------------------
# Indications for Use
# 510(k) Number: Klo 2442
Device Name: E.S.O (Electro Sensor Oxi)
Indications for Use:
- To spot check or monitor Oxygen saturation of arterial hemoglobin (SpO2%) and pulse rate. ...
SEP 1 0 2010
- To analyze the pulse waveform (Photoelectrical Plethysmography or PP) provided . by the oximeter. It only provides mathematical analyses of the input of the SpO2 measurement.
- To analyze the basic rhythms of the NN or RR intervals in heart rate, both in the ● time domain and in the frequency domain (short time 5 minutes). It only provides mathematical analyses of the input of the heart rate variability.
The mathematical analysis of Photoelectrical Plethysmography and HRV are not intended use for diagnosis.
The software provides a visual alarm for the values of the heart rate and/or SpO2 percent out of the normal range and for the bad quality signal transmission.
The data are stored in PC in the Backup system of the ESO software.
The device is intended use only for adult subjects (> 20 years old)
This Oximeter is intended to be used in spot-checking (5 minutes)
The device is intended use in licensed practitioner's office
This device is no intended to be used at home, in hospital or out-of-hospital transport The device is not intended use in support life and not for continuously monitoring The system will be use by practitioner.
Prescription Use (Part 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 OF NEEDED)
| Page | 1 of 1 |
|------|--------|
|------|--------|
Concurrence of CDRH, Office of Device Evaluation (ODE)

| (Division Sign-Off) | |
|------------------------------------|---------|
| Division of Cardiovascular Devices | |
| 510(k) Number | K102442 |
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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.
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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.
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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.
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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.
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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.
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7. Product codes and the regulations tree
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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.
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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.