The LIFEPAK ECG cables are reusable electrode cable systems intended to transmit signals from patient electrodes to the LIFEPAK monitor/defibrillator for monitoring purposes. LIFEPAK ECG cables are intended for use in outdoor and indoor emergency care settings.
Device Story
LIFEPAK ECG cables are reusable electrode cable systems; transmit electrical ECG signals from patient electrodes to LIFEPAK 35 monitor/defibrillator. Used by ALS/BLS providers in indoor/outdoor emergency care settings. System consists of shielded conductor wires with polyurethane/PVC/TPU jackets; available in 3, 4, 5, 6, 12, and 15-lead configurations. Cables connect to patient via electrodes at standard chest/extremity sites; connect to monitor via proprietary interface. Provides real-time ECG signal transmission for diagnostic and monitoring purposes; enables clinicians to visualize cardiac activity on monitor display. Facilitates clinical decision-making during emergency cardiac assessment and monitoring; benefits patients by ensuring reliable signal acquisition for life-critical monitoring.
Clinical Evidence
No clinical data submitted. Bench testing only. Testing included connector retention, cable noise, flex/twist life, tensile strength, defibrillation protection, dielectric withstand, leakage current, storage/drop testing, cleaning/disinfection resistance, EMC, and shock/vibration/IP classification per IEC 60601-1, IEC 60601-2-25, IEC 60601-2-27, and ANSI AAMI EC53 standards.
Technological Characteristics
Reusable ECG trunk cables and lead wires. Materials: PU, PVC, TPU. Shielded/insulated construction. Configurations: 3, 4, 5, 6, 12, 15-lead. Lengths: 5 ft, 8 ft. Connectivity: Proprietary interface for LIFEPAK 35 monitor/defibrillator. Standards: ANSI AAMI EC53:2013/(R)2020, IEC 60601-1:2005/AMD2:2020, IEC 60601-2-25:2011, IEC 60601-2-27:2011, IEC 60529:2013, IEC 60601-1-2:2014. Biocompatibility: ISO 10993-1. Non-sterile.
Indications for Use
Indicated for patients requiring ECG monitoring in indoor and outdoor emergency care settings. Compatible with LIFEPAK 35 monitor/defibrillator. No known contraindications.
Regulatory Classification
Identification
A patient transducer and electrode cable (including connector) is an electrical conductor used to transmit signals from, or power or excitation signals to, patient-connected electrodes or transducers.
Predicate Devices
Multi-Link™ X2 ECG Cable and Leadwire System (K211294)
Submission Summary (Full Text)
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May 7, 2024
Stryker Physio-Control Craig Schultz Senior Staff Regulatory Affairs Specialist 11811 Willows Road NE Redmond, Washington 98052
Re: K240377
Trade/Device Name: LIFEPAK® ECG Cables Regulation Number: 21 CFR 870.2900 Regulation Name: Patient Transducer And Electrode Cable (Including Connector) Regulatory Class: Class II Product Code: DSA Dated: February 7, 2024 Received: February 7, 2024
Dear Craig Schultz:
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 (the 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 available 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.
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
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Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30, Design controls; 21 CFR 820.90, Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review. the OS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
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 of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 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 Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 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,
# Jennifer W. Shih -S
Jennifer Shih Kozen Assistant Director Division of Cardiac Electrophysiology, Diagnostics and Monitoring Devices Office of Cardiovascular Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
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# Indications for Use
Form Approved: OMB No. 0910-0120 Expiration Date: 07/31/2026 See PRA Statement below.
Submission Number (if known)
#### K240377
Device Name
LIFEPAK ECG Cables
Indications for Use (Describe)
The LIFEPAK ECG cables are reusable electrode cable systems intended to transmit signals from patient electrodes to the LIFEPAK monitor/defibrillator for monitoring purposes. LIFEPAK ECG cables are intended for use in outdoor and indoor emergency care settings. LIFEPAK ECG Cables: - LIFEPAK 3-wire ECG Cable
- LIFEPAK 5-wire ECG Cable
- LIFEPAK 4-wire ECG cable
- LIFEPAK 3-wire extended precordial ECG Cable
- LIFEPAK 6-wire expandable precordial ECG cable
Type of Use (Select one or both, as applicable)
> Prescription Use (Part 21 CFR 801 Subpart D)
Over-The-Counter Use (21 CFR 801 Subpart C)
#### CONTINUE ON A SEPARATE PAGE IF NEEDED.
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## 510(k) SUMMARY
# 1.0 Submitter Information [21 CFR 807.92(a) (1)]
Physio-Control, Inc. 11811 Willows Road Northeast Redmond, Washington 98073-9706 Registration Number: 3015876, 3006703820
### Contact:
Craig Schultz Sr. Staff Regulatory Affairs Specialist +1 (425) 442-3268 (P) Craig.schultz@stryker.com
Date of Preparation: April 29, 2024
## 2.0 Device Information [21 CFR 807.92 (a) (2)]
# Device Trade/Proprietary Name:
LIFEPAK® ECG Cables
Device Common Name:
LIFEPAK ECG Cables
### Table 1 Device Classification
| Device Classification and CFR Reference | Classification Panel | Product Code |
|-----------------------------------------------------------------------------------------|------------------------|--------------|
| Cable, Transducer and Electrode, Patient,<br>(Including Connector), Class II (870.2900) | Cardiovascular Devices | DSA |
## 3.0 Predicate Device [21 CFR 807.92(a) (3)]
The features and functions of the proposed subject accessory are equivalent to the following previously cleared device:
#### Table 2 Predicate Device
| Predicate Device | 510(k) Number(s) / Clearance Date |
|-------------------------------------------------|-----------------------------------|
| Multi-Link™ X2 ECG Cable and Leadwire<br>System | K211294/August 16, 2021 |
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## 4.0 Purpose and Device Description [21 CFR 807.92(a) (4)]
The LIFEPAK ECG cables are an accessory designed to be used with Physio-Control LIFEPAK 35 monitor/defibrillator. The LIFEPAK ECG cables are intended for use by Advanced Life Support (ALS) and Basic Life Support (BLS) providers to transmit signals from patient electrodes to the LIFEPAK monitor/defibrillator for monitoring purposes.
The LIFEPAK ECG Cables are reusable ECG trunk cables and lead wires that connect to the LIFEPAK 35 monitor/defibrillator for ECG monitoring. There are several types or configurations of ECG cables: 3-wire, a 4-wire cable assembly to be used with the LIFEPAK 6-wire precordial cable and/or the LIFEPAK 3-wire precordial cable to perform a 12 or 15-lead ECG Cable assembly. When the LIFEPAK 4-wire ECG cable is configured with a 6-wire expandable precordial cable, a 12-lead ECG is constructed. Likewise, when the LIFEPAK 4-wire ECG cable is configured with a 6-wire expandable precordial cable and a 3-wire extended precordial ECG cable a 15-lead ECG is constructed.
The 4- wire ECG cable is available in two lengths, 5 feet or 8 feet. Additionally, the 3-, 4-, and 5-wire ECG Cables and the 6-wire precordial ECG cable are available with color coding according to the American Heart Association (AHA) or International Electrotechnical Commission (IEC) standards.
The LIFEPAK ECG cables are a reusable electrode cable system intended to transmit signals from patient electrodes to the LIFEPAK 35 monitor/defibrillator for both diagnostic and monitoring purposes. These accessories consist of conductor wires that are shielded and insulated by a polyurethane jacket material. The lead wires are color coded according to which electrode location they are attached to on the patient.
The LIFEPAK ECG cables are not intended for use with other manufacturers' defibrillators. The LIFEPAK ECG cables are intended only for use with LIFEPAK 35 monitor/defibrillator.
### 5.0 Intended Use of device and Indications for Use [21 CFR 807.92(a) (5)]
The LIFEPAK ECG cables are reusable electrode cable systems intended to transmit signals from patient electrodes to the LIFEPAK monitor/defibrillator for monitoring purposes. LIFEPAK ECG cables are intended for use in outdoor and indoor emerqency care settings.
#### LIFEPAK ECG Cables:
- LIFEPAK 3-wire ECG Cable -
- LIFEPAK 5-wire ECG Cable i
- -LIFEPAK 4-wire ECG cable
- LIFEPAK 3-wire extended precordial ECG Cable l
- -LIFEPAK 6-wire expandable precordial ECG cable
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## 6.0 Summary of Substantial Equivalence [21 CFR 807.92 (a)(6)]:
The fundamental scientific technology is the same for the proposed and the predicate devices. The ECG cables transmit signals from patient electrocardiograph monitor for monitoring purposes. The LIFEPAK ECG cables are substantially equivalent to the Multi-Link X2 Cable and Lead Wire System regarding safety, effectiveness, intended use and performance. The proposed LIFEPAK ECG Cables are designed to work with the LIFEPAK 35 monitor/defibrillator.
No new questions regarding the safety and effectiveness of the device have been raised with the proposed LIFEPAK ECG Cables.
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## Table 3 Comparison of Predicate Device and Subject Device
| Characteristic | Predicate Device<br>Multi-Link X2 ECG Cable and Leadwire<br>System (K211294) | Subject Device<br>LIFEPAK ECG Cables |
|---------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Trade Name | Multi-Link X2 ECG Cable and Leadwire<br>System | LIFEPAK ECG Cables |
| Manufacturer | Vyaire Medical Inc. | Physio-Control Inc. |
| FDA Product Code | DSA | DSA |
| Prescription/Over-the-<br>Counter Use | Prescription | Same |
| Indications for<br>Use/Intended Use | The Multi-LinkTM X2 ECG Cable and<br>Leadwire System is intended to transmit<br>signals from patient electrodes to various<br>electrocardiograph recorders / monitors for<br>monitoring purposes. | The LIFEPAK ECG cables are reusable electrode cable<br>systems intended to transmit signals from patient<br>electrodes to the LIFEPAK monitor/defibrillator for<br>monitoring purposes. |
| Contraindications | None known | Same |
| Intended Environment | Hospital Environment and Pre-Hospital<br>Environment (i.e., scene of emergency,<br>transport, including airborne). | Indoor and outdoor emergency care settings. |
| Patient Population | Any patient requiring ECG monitoring,<br>according to the monitor's intended use. | Same |
| Anatomical sites | The anatomical site of the compatible<br>previously cleared ECG Leadwires is Chest | Attached to electrodes placed at standard specified<br>locations on chest or extremities. |
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| Characteristic | Predicate Device<br>Multi-Link X2 ECG Cable and Leadwire<br>System (K211294) | Subject Device<br>LIFEPAK ECG Cables |
|--------------------------------------------------------|------------------------------------------------------------------------------|--------------------------------------|
| Usage | Reusable | Same |
| Sterile | Nonsterile | Same |
| ECG Monitoring | 3 or 5 lead | 3, 5, 6, 12 or 15-lead |
| Cable Materials | TPU | PU, PVC, TPU |
| Cable Length | Variable | 5 ft, 8 ft |
| Compatibility with<br>Environment and other<br>devices | Philips, Mindray, Nihon Kohden, GE,<br>Spacelabs, | LIFEPAK 35 monitor/defibrillator |
| Biocompatibility | ISO 10993-1 | ISO 10993-1 |
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The subject and predicate devices are based on the following same technological principles:
- Conducting electrical signals passively from ECG lead wires to the monitoring ● equipment.
- Device contains interfaces to allow the ECG wires and the ECG monitoring to connect.
- . Device composed of a plug face, contact pins, pre-mold, over-mold, and cable.
- Cable coating materials are the same.
The following technological differences exist between the subject and predicate devices:
- . The predicate device is compatible with Leadwires containing 3-Wire and 5-Wire ECG cables, while the subject device is compatible with 3, 5, 6, 12 and 15-leads.
- The trunk cable monitor interfaces are different as the predicate and subject devices . are compatible with different monitors.
## 7.0 Performance Data [21 CFR 807.92(b)(1)]:
Performance testing has been completed to demonstrate that the proposed LIFEPAK ECG Cables meet the safety and performance requirements established in the design specifications. Comprehensive testing included the following:
- ASCA Test Reports ●
- Design Verification Testing ●
- Biocompatibility Assessment ●
No human clinical studies were submitted as part of this 510(k) Premarket Notification.
| Test Performed | Applicable Standard | Result |
|-----------------------------------------------|-------------------------------------------------------------------|--------|
| Connector mating/unmating, Retention<br>force | 60601-2-25:2011<br>60601-2-27:2011<br>ANSI AAMI EC53:2013/(R)2020 | Met |
| Inspection of Air Clearance | 60601-2-25:2011<br>60601-2-27:2011 | Met |
| Cable Noise Testing | ANSI AAMI EC53:2013/(R)2020 | Met |
| Flex/Twist Life Testing | ANSI AAMI EC53:2013/(R)2020 | Met |
| Tensile Strength Testing | ANSI AAMI EC53:2013/(R)2020 | Met |
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| Test Performed | Applicable Standard | Result |
|-------------------------------------------------------------|---------------------------------------------------------------------------|--------|
| Defibrillation Protection and Energy<br>Reduction | IEC 60601-1:2005/AMD2:2020<br>IEC 60601-2-25:2011<br>IEC 60601-2-27:2011 | Met |
| Dielectric Withstand Testing | IEC 60601-1:2005/AMD2:2020<br>ANSI AAMI EC53:2013/(R)2020 | Met |
| Leakage Current Testing | IEC 60601-1:2005/AMD2:2020 | Met |
| Storage Conditioning and Drop Test | IEC 60601-1:2005/AMD2:2020<br>IEC 60601-2-27:2011 | Met |
| Material Resistance for Cleaning<br>and Disinfection Stress | IEC 60601-1:2005/AMD2:2020 | Met |
| Electromagnetic Compatibility | IEC 60601-1-2:2014 | Met |
| Shock, Vibration and IP Classification | IEC 60601-1:2005/AMD2:2020<br>IEC 60601-2-27:2011 2011<br>IEC 60529: 2013 | Met |
## 8.0 Conclusion [21 CFR 807.92(b)(3)]:
The subject device and the predicate device have the same intended use, similar indications for use, same technological characteristics, and the subject device does not raise any new issues affecting safety or effectiveness of the device. A risk benefit assessment concluded that the benefits associated with the subject device do outweigh any potential risks. The subject device has passed all acceptance criteria for the non-clinical performance testing. Therefore, it was determined that the subject device is substantially equivalent to the predicate devices identified in this submission.
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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.
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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.
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Reading rule for every project: how many summaries do you read in full?
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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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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.