K142489 · Unimed Medical Supplies, Inc. · DSA · Nov 4, 2014 · Cardiovascular
Device Facts
Record ID
K142489
Device Name
Unimed Disposable ECG lead wires
Applicant
Unimed Medical Supplies, Inc.
Product Code
DSA · Cardiovascular
Decision Date
Nov 4, 2014
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.2900
Device Class
Class 2
Indications for Use
The subject device are intended for use only by trained healthcare professionals for measurement of a patient's ECG for both diagnostic and monitoring purposes. Use is limited by the indications for use of the connected monitoring or diagnostic equipment. These leadwires are intended for short-term use only (an average patient stay of 5 days).
Device Story
Unimed Disposable ECG Lead Wires are single-patient-use cables designed to transmit cardiac signals from surface electrodes to ECG recorders/monitors. The system links the patient to compatible trunk cable systems via grabber or snap-style distal connectors and a common proximal header. Used in clinical settings by trained healthcare professionals for short-term monitoring (average 5-day stay). The device facilitates continuous ECG signal acquisition, enabling healthcare providers to monitor cardiac activity and make diagnostic decisions. Benefits include reliable signal transmission for patient monitoring while maintaining compatibility with existing clinical infrastructure.
Clinical Evidence
Bench testing only. No clinical data provided. Performance verified against ANSI/AAMI EC53, ANSI/AAMI EC13, and FDA guidance for electrode lead wires. Biocompatibility testing performed per ISO 10993-5 (cytotoxicity) and ISO 10993-10 (irritation/hypersensitivity).
Technological Characteristics
Materials: PA66, PVC, ABS. Construction: Flexible shielded multi-conductor electrical cable with shielded copper leadwire and polymer jacket. Connectivity: Compatible with MultiLink yoke design. Sterilization: Supplied non-sterile; not intended for reprocessing. Standards: IEC 60601-1, ANSI/AAMI EC53, ISO 10993-5/10.
Indications for Use
Indicated for monitoring cardiac signals for diagnostic and monitoring purposes in patients requiring ECG measurement. Use is limited by the connected monitoring or diagnostic equipment.
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.
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Public Health Service
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Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
November 4, 2014
Unimed Medical Supplies, Inc. Ms. Tan Xinmei QA & RA Manager No.37, Yanshan Road, Shekou Shenzhen, 518067 China
K142489 Re:
Trade/Device Name: Unimed Disposable ECG Lead Wires Regulation Number: 21 CFR 870.2900 Regulation Name: Patient Transducer and Electrode Cable (Including Connector) Regulatory Class: Class II Product Code: DSA Dated: August 10, 2014 Received: September 4, 2014
Dear Ms. Tan Xinmei.
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. 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
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Part 807); labeling (21 CFR Part 801); medical device reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (OS) 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 contact the Division of Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm. 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
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 Industry and Consumer Education at its toll-free number (800) 638-2041 or (301) 796-7100 or at its Internet address
http://www.fda.gov/MedicalDevices/ResourcesforYou/Industry/default.htm.
Sincerely yours,
M.A. Hilleman
for
for Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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K142489
Page __ 1__ of___ 1_
510(k) Number (if known): __K142489
Device Name: Unimed Disposable ECG Lead Wires
#### Indications for Use
The Unimed Disposable ECG Lead Wires are indicated for use in the monitoring of cardiac signals for both diagnostic and monitoring purposes. Use is limited by the indications for use of the connected monitoring or diagnostic equipment.
Model:
| HT3-90DS | DG5-90DS | SMB3-90DP | HPA5-90DP | 2385DS | MR5-90DS | AP5-90DS |
|-----------|-----------|-----------|----------------------|----------|---------------------|-----------|
| MQ3-90DS | NKB6-90DS | D3-90DS | AAB5-90DS DT5-90DS | | 2586DP | MQB6-90DS |
| AAB3-90DP | AP6-90DS | DG3-90DP | AT5-90DP | | MR5-90DP DT3-90DS | DG6-90DS |
| AT3-90DS | 2396DS | 2386DP | HT5-90DS | SM5-90DS | 2585DP | NKB3-90DS |
| D5-90DP | AP3-90DP | 2596DS | 2312DP | 2512DP | HP3-90DS I | MQ5-90DS |
#### (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use x (Per 21 CFR 801.109)
Over-The-Counter Use
OR
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# K142489
# Page 1 of 5
# 510(K) Summary
## Prepared Date: 2014-8-15
# 1. Submitter Information
| Name | Unimed Medical Supplies Inc |
|-----------------------------------|------------------------------------------------------|
| Address | No. 37, Yanshan Road, Shekou, Shenzhen, China 518067 |
| Tel | +86-755 26695165 |
| Fax | +86-755 26697984 |
| Establishment<br>Registration No. | 3007307487 |
## 2. Contact Person
| Contact person | Tan xinmei |
|----------------|------------------------------------------------------|
| Title | QA&RA manager |
| Address | No. 37, Yanshan Road, Shekou, Shenzhen, China 518067 |
| Tel | +86-755 26695165 |
| Fax | +86-755 26697984 |
| E-mail | tanxinmei@unimed.cn |
## 3. Manufacturer Information
| Name | Unimed Medical Supplies Inc |
|------------------|------------------------------------------------------|
| Address | No. 37, Yanshan Road, Shekou, Shenzhen, China 518067 |
| Establishment | 3007307487 |
| Registration No. | |
### 4. Proposed Device Information
| Trade Name | Unimed Disposable ECG lead wires |
|--------------------------|--------------------------------------------------------------|
| Common name | ECG lead wires |
| Classification name | Patient transducer and electrode cable (including connector) |
| Regulatory class | Class 2 |
| Production<br>regulation | 21 CFR § 870.2900 |
| Product code | DSA |
| Panel | Cardiovascular |
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K142489
#### Part 2 of 5
| 510(K)No. | K110287 |
|-----------------------|--------------------------------------------------------------|
| Submitter's Name | Philips Medical Systems |
| Trade Name | Philips ECG Leadwire Set |
| Common name | ECG Leadwire Set |
| Classification name | Patient transducer and electrode cable (including connector) |
| Regulatory class | Class 2 |
| Production regulation | 21 CFR § 870.2900 |
| Product code | DSA |
| Panel | Cardiovascular |
### 5. Predicate Device Information
### 6. Device description
The unimed disposable ECG lead wire is a single patient electrode cable system used to transmit signals from patient surface electrodes to various electrocardiograph recorders/monitors for both diagnostic and monitoring purposes. This type of device is common to both industry and to most medical establishments. The system is designed to provide a family of lead wires that will link the patient and the compatible patient trunk cable system.
## 7. Intended use
The subject device are intended for use only by trained healthcare professionals for measurement of a patient's ECG for both diagnostic and monitoring purposes. Use is limited by the indications for use of the connected monitoring or diagnostic equipment. These leadwires are intended for short-term use only (an average patient stay of 5 days).
| Comparison<br>item | Subject Device<br>Unimed | Predicate Device<br>K110287 | Note |
|---------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------|
| Intended use | The subject device are<br>intended for use only by<br>trained healthcare<br>professionals for<br>measurement of a patient's<br>ECG for both diagnostic and<br>monitoring purposes. Use is | Philips Single-Patient-Use<br>Disposable ECG Leadsets are<br>intended for use only by<br>trained<br>healthcare professionals for<br>measurement of a patient's<br>ECG for both diagnostic and | Same |
| | limited by the indications for<br>use of the connected<br>monitoring or diagnostic<br>equipment. These leadwires<br>are intended for short-term<br>use only (an average patient<br>stay of 5 days). | monitoring purposes. Use is<br>limited by the indications for<br>use of the connected<br>monitoring or diagnostic<br>equipment. These Philips<br>leadsets are intended for<br>short-term<br>use only (an average patient<br>stay of 5 days). | |
| Indications<br>for Use | The subject device are<br>indicated for use in the<br>monitoring of cardiac signals<br>for both<br>diagnostic and monitoring<br>purposes. Use is limited by<br>the indications for use of the<br>connected monitoring or<br>diagnostic equipment. | Philips ECG leadsets are<br>indicated for use in the<br>monitoring of cardiac signals<br>for both<br>diagnostic and monitoring<br>purposes. Use is limited by<br>the indications for use of the<br>connected monitoring or<br>diagnostic equipment. | Same |
| Anatomical<br>Sites | Attached to electrodes placed<br>at standard specified<br>locations on chest wall and<br>extremities | Attached to electrodes placed<br>at standard specified<br>locations on chest wall and<br>extremities | Same |
| Design<br>/Appearance | Cables with "grabber/snap"<br>configuration of ECG<br>electrode connector (distal<br>connector) and common<br>"header" connection<br>(proximal connector) | Cables with "grabber"<br>configuration of ECG<br>electrode connector (distal<br>connector) and common<br>"header" connection<br>(proximal connector) | Same |
| Sterility | Supplied non-sterile;cannot<br>be sterilized or otherwise<br>reprocessed | Supplied non-sterile;cannot be<br>sterilized or otherwise<br>reprocessed | Same |
| Usage | Single patient use | Single patient use | Same |
| Material | PA66,PVC,ABS | PA66,PVC,ABS | Same |
| Cable Length | 0.9m/3.4m | 1.0m/0.85m | Similar |
| Cable<br>Construction | Flexible shielded multi<br>conductor electrical cable | Flexible shielded multi<br>conductor electrical cable | Same |
| Wire Color | White | White | Same |
| Leadwire<br>Construction | Shielded copper leadwire<br>with polymer<br>jacket | Ribbonized leads with<br>individual coax shields | Same |
| Lead number | 3,5&6 | 3,5 | Similar |
| Proximal<br>connector<br>Design | Compatible to MultiLink<br>yoke design | Compatible to MultiLink<br>yoke design | Same |
| Distal<br>connector<br>Design | "Grabber"or"Snap"electrode<br>connectors are labeled<br>LL(red),RA(white),RL(green)<br>,LA(black)&,V(brown) | "Grabber" electrode<br>connectors are color coded<br>(red, white, green, coded<br>(red, white, green,<br>black, brown)<br>Connector designations<br>(LL,RL etc.) molded<br>into plastic | Similar |
| Conformance<br>standard | IEC60601-1(Safety)<br>EC53(Performance)<br>ISO10993-5,-10(Biocompati<br>bility ) | IEC60601-1(Safety)<br>EC53(Performance)<br>ISO10993-5,-10(Biocompati<br>bility) | Same |
## 8. Comparison to predicate device
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From the comparison form above, both devices have the same intended use ,indications for use, Anatomical Sites, Design /Appearance, Sterility, Usage, Material,Cable Construction, Wire Color& Conformance standard,have the similar cable length, Lead number& Distal connector Design item.
But in cable length, Lead number& Distal connector Design item,both devices have some difference, please see the following analysis.
# Note1 Cable Length
The subject devices is longter than philips unit,but unimed units meet the requirements of EC53 and IEC60601-1, so this difference does not bring any safety and effectiveness problem.
# Note2 Lead number
The subject devices have 6 lead type which fit the clinical use. Meanwhile the subject units meet the requirements of EC53 and IEC60601-1, so this difference also does not bring any safety and effectiveness problem.
## Note3 Distal connector Design
In this item,the suject device have grabber type and snap type ,which is more suitable for clinical use.Futhermore, the subject devices meet the requirements of EC53 and IEC60601-1, so this difference also does not bring any safety and effectiveness problem.
## 9. Performance data
The subject device meets the following the recognized standards:
- ANSI/ANMM EC53-1995 (R)2001, R(2008) ECG Cables and Leadwires (except4.3.1)
- ANSI/AAMI EC13 Cardiac monitors, heart rate meters and alarms (only product markings, chapter 4.1.1.5),2002
- FR 898: Guidance Document on the Performance Standard for Electrode Lead Wires and Patient Cables, May 11, 1998
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K142489 Part 5 of 5
- IEC 60601-1 Medical Electrical Equipment-Part 1: General Requirements for Safety, 1988+A1:1991+A2:1995
- ISO 10993-5, Biological evaluation of medical devices-Part 5: Tests for In Vitro cytotoxicity, 2009
- ISO 10993-10, Biological evaluation of medical devices-Part 10: Tests for irritation and delayed-type hypersensitivity, 2010
## 10. Substantial Equivalence Statement
Based on the comparison ,analysis, and the submitted performance data, unimed believes that the unimed disposable ECG Lead Wire is as safe and effective and is substantially equivalent to the predicate devices.
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.