Phillips Electrocardiograph Page Writer TC cardiograph (TC20, TC30, TC70) is intended to acquire multi-channel ECG signals from adult and pediatric patients from body surface ECG electrodes and to record, display, and store these ECG signals for review by the user. It is to be used in healthcare facilities by trained healthcare professionals. Analysis of the ECG signals is accomplished with algorithms that provide measurements, data presentations, graphical presentations and interpretations for review by the user. The interpreted ECG with measurements and interpretive statements is offered to the clinician on an advisory basis only. It is to be used in conjunction with the clinician's knowledge of the results of the physical examination, the ECG tracings, and other clinical findings. A qualified physician is asked to over read and validate (or change) the computer generated ECG interpretation.
Device Story
Family of cardiographs (TC20, TC30, TC50, TC70) acquires multi-channel ECG signals via body surface electrodes; processes signals using integrated algorithms to provide measurements, graphical presentations, and interpretations; displays/stores data for clinician review. Used in healthcare facilities by trained professionals. Output is advisory; requires physician validation. Supports wired/wireless connectivity to Philips IntelliSpace ECG Management System or third-party systems for order download, ADT updates, and DICOM report transmission. Modifications (software A.07.07) focus on battery lifecycle management (overcharge/overheat protection, logging) and enhanced remote service/cybersecurity. Benefits include improved battery safety and device reliability.
Clinical Evidence
No clinical data. Substantial equivalence demonstrated via bench testing, software verification/validation, and battery system-level testing.
Indicated for acquisition, recording, display, analysis, and storage of multi-channel ECG signals from adult and pediatric patients via body surface electrodes in healthcare facilities by trained professionals.
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.
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September 29, 2020
Philips Medical Systems Hong Zhu Sr. Regulatory Affairs Manager Building A2, #718 Lingshi Road, Jingan District Shanghai, China 200072
Re: K191738
Trade/Device Name: PageWriter TC20, TC30, TC50, TC70 Regulation Number: 21 CFR 870.2340 Regulation Name: Electrocardiograph Regulatory Class: Class II Product Code: DPS Dated: September 29, 2019 Received: October 2, 2019
Dear Hong Zhu:
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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
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
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801); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safety-reportingcombination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about medical devices and radiation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
for
Jennifer Shih Assistant Director DHT2A: Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices OHT2: Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
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# Indications for Use
510(k) Number (if known)
K191738
Device Name
Philips Electrocardiograph PagerWriter TC20, TC30, TC50, TC70
#### Indications for Use (Describe)
Phillips Electrocardiograph Page Writer TC cardiograph (TC20, TC30, TC70) is intended to acquire multi-channel ECG signals from adult and pediatric patients from body surface ECG electrodes and to record, display, and store these ECG signals for review by the user. It is to be used in healthcare facilities by trained healthcare professionals. Analysis of the ECG signals is accomplished with algorithms that provide measurements, data presentations, graphical presentations and interpretations for review by the user.
The interpreted ECG with measurements and interpretive statements is offered to the clinician on an advisory basis only. It is to be used in conjunction with the clinician's knowledge of the results of the physical examination, the ECG tracings, and other clinical findings. A qualified physician is asked to over read and validate (or change) the computer generated ECG interpretation.
| Type of Use (Select one or both, as applicable) | |
|-------------------------------------------------|--|
|-------------------------------------------------|--|
X Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
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#### SUBMITTER I.
Philips Healthcare-VSS-Shanghai CDC A division of Philips Medical Systems Building A2, #718 Lingshi Road, Jingan District, Shanghai, China 200072
Contact: Hong Zhu Sr. Regulatory Affairs Manager Telephone: +86 18501616553 Email: hong.zhu 2@philips.com
Dated Prepared: August 18, 2020
#### DEVICE II.
PageWriter TC20, TC30, TC50, TC70 Trade Name: Common Name: Cardiograph Catalogue Number: TC20 (860332), TC30 (860306), TC50 (860310), TC70 (860315) Classification Name: Electrocardiograph Class II, 21 CFR § 878.2340 Class/Regulation: Product Code: DPS
## III. PREDICATE DEVICE
Philips PageWriter TC20, TC30, TC50, TC70
- K113144 (cleared 4/3/2012 for TC20) ●
- K080999 (cleared 5/9/2008 for TC30, TC50, TC70)
The devices are subject to a firm-initiated recall due to the over-heat of the battery when used beyond the end of the battery's life. This 510(k) Notification is to address the battery life.
## IV. DEVICE DESCRIPTION
Philips Electrocardiograph, PageWriter TC cardiograph is a product family intended to acquire, record, display, analyze and store multi-channel ECG signals from adult and pediatric patients through a body surface ECG electrode. It includes PageWriter TC20, PageWriter TC30, PageWriter TC50 and PageWriter TC70. Each device under this product family is integrated with the algorithms to provide measurements, data presentations, graphical presentations and interpretations for review by the clinician on an advisory basis. The interpreted ECG with measurements and interpretive statements are to be used in conjunction with clinician's knowledge of the patient, the results of the physical examination, the ECG tracings and other clinical findings. A qualified physician is asked to over read and validate (or change) the computer generated ECG interpretation.
PageWriter TC cardiograph can be operated on the battery when the AC power cord or AC power connector is not in an operable condition, depending on the model of the cardiograph (TC20 single battery only; TC30/TC50 - either one or two batteries; TC70 - two batteries only). When
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operating a PageWriter TC cardiograph with one battery or two, only the approved batteries with the same part number can be used.
PageWriter TC cardiograph has various configuration provided for the preference of the user, and can be updated with the compatible options/modules from the corresponding Upgrade Kit for use with all approved accessories and spare parts, including patient data cables, Patient Information Modules (PIM), lead sets, electrodes, print papers and trolleys. None of the accessories and spare parts are provided sterile.
Once configured, PageWriter TC cardiograph can provide integrated connectivity (wired or wireless) with the compatible Philips IntelliSpace ECG Management System, or other third party ECG system. for patient order download and ECG transmission. It also supports integrated connectivity with an ADT Order Update system to manage the patient demographic data, and transmit ECG reports in compliance with DICOM protocol once configured with DICOM option. The cybersecurity on PageWriter TC cardiograph is periodically and proactively improved according to the cybersecurity analysis and the routine device cyber maintenance plan.
### MODIFICATIONS
This bundled Traditional 510(k) Notification proposes the device modification under software A.07.07 to PageWriter TC cardiograph family, PageWriter TC20, TC30, TC50, and TC70 under the same intended use and indication for use statement.
The modifications under software A.07.07 will provide incremental improvements on the battery lifecycle management while maintaining the same basic functionality and intended use. The design improvements related to battery management are common to all cardiographs and listed below.
- Battery overcharge protection
- Battery overheating protection
- Battery lifecycle management
- Battery abnormality reporting and logging ●
- Updates to labeling including re-phrasing and relocation of precautions and warnings
The proposed modifications under software A.07.07 also include the design enhancement for the purpose of remote service maintenance and post-market cybersecurity.
## V. INDICATIONS FOR USE
Philips Electrocardiograph, PageWriter TC cardiograph (TC20, TC30, TC50, and TC70) is intended to acquire multi-channel ECG signals from adult and pediatric patients from body surface ECG electrodes and to record, display, analyze and store these ECG signals for review by the user. It is to be used in healthcare facilities by trained healthcare professionals. Analysis of the ECG signals is accomplished with algorithms that provide measurements, data presentations, graphical presentations and interpretations for review by the user.
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The interpreted ECG with measurements and interpretive statements is offered to the clinician on an advisory basis only. It is to be used in conjunction with the clinician's knowledge of the patient, the results of the physical examination, the ECG tracings, and other clinical findings. A qualified physician is asked to over read and validate (or change) the computer generated ECG interpretation.
The Indication for Use statement for PageWriter TC20, TC30, TC50, and TC70 with the proposed software version is identical to the predicates. There is no change to the indication for use statement in this submission.
#### VI.COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH TH PREDICATE DEVICE
Philips Electrocardiograph, PageWriter TC20, TC30, TC70, TC70 with the proposed modifications under software A.07.07 has similar technological and performance characteristics as the predicate devices cleared under K113144 and K080999.
It is intended to acquire, record, display, analyze, store and print the multi-channel ECG signals from adult and pediatric patients through a body surface ECG electrode. It is integrated with algorithm that provide measurements, data presentations, graphical presentations and interpretations for review by the clinician on an advisory basis. The basic technological and performance characteristics are kept same for the subject devices with the proposed modifications and the predicates.
- ECG Acquisition
- ECG Quality Monitor
- ECG Memory and Transfer ●
- ECG Interpretation
- Print Preview Capability
- Clinical Workflow Networked Orders ●
- Display Formats ●
The cardiographs with the proposed change under software A.07.07 provides incremental improvements over the predicates regarding the battery lifecycle management while maintaining the same basic functionality and intended use. These improvements are summarized below, including the labeling update.
- Battery overcharge protection
- Battery overheating protection
- Battery lifecycle management ●
- . Battery abnormality reporting and logging
- Updates to labeling including re-phrasing and relocation of precautions and warnings ●
The proposed change under software A.07.07 also provides the enhancements for the subject devices to perform service maintenance remotely and to improve the post market cybersecurity.
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#### PERFORMANCE DATA VII.
The following performance data were provided in support of the substantial equivalence determination.
### Electrical safety, Electromagnetic Compatibility (EMC) and Usability
The changes were evaluated for impact on electrical safety, electromagnetic compatibility (EMC) and usability according to the consensus standards and determined that the proposed changes on the battery lifecycle management did not require additional electrical safety, EMC and usability testing. PageWriter TC20, TC30, TC50, TC70 cardiographs continue meeting the requirements of those consensus standards, including IEC 60601-1, IEC 60601-2-25, IEC 60601-1-2 and IEC 62366-1.
### Software Verification and Validation Testing
Software verification and validation testing was conducted and documented as provided in according with FDA Guidance for the Content of Premarket Submission for Software Contained in Medical Devices and IEC 62304:2006/A1:2015, Medical Device Software - Software Life Cycle Processes. The software for the subject device was considered as a "moderate" level of concern, since the modified software would not directly result in serious injury or death to the patient or operator.
### Cybersecurity
Cybersecurity testing was conducted and documented for the proposed change in accordance with FDA's Guidance Content of Premarket Submissions for Management of Cybersecurity in Medical Devices, and demonstrated an effective cybersecurity is in place to assure the device functionality and safety. The enhancement made for the service purpose and post market cybersecurity does not raise the new questions of safety and effectiveness.
### Battery and Functional Testing
The battery was qualified through testing at the part level and the system level when integrated into the host device according to the applicable industry and FDA consensus standards. System verification testing showed that each device under PageWriter TC cardiograph family meets all required functionality including the battery lifecycle management and meets its system specifications as it's intended.
### Clinical Studies
This premarket submission did not require clinical studies to demonstrate substantial equivalence.
### VIII. CONCLUSIONS
The verification and validation activities demonstrate that Philips Electrocardiograph, PageWriter TC20, TC30, TC50, TC70 with software A.07.07 is substantial equivalent to the predicate PageWriter TC20. TC30. TC50 and TC70 cleared through K113144 and K080999.
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The fundamental technology and intended use of PageWriter TC20, TC30, TC50, TC70 cardiographs has not changed. Moreover, the results of testing demonstrate that the device modifications under software A.07.07 do not raise the new question of the safety or performance of the cardiographs.
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.