K252042 · Swift Sync, Inc. · LDF · Jul 30, 2026 · Cardiovascular
Device Facts
Record ID
K252042
Device Name
Sync AV II Temporary Pacing Catheter
Applicant
Swift Sync, Inc.
Product Code
LDF · Cardiovascular
Decision Date
Jul 30, 2026
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.3680
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Sync-AV II temporary pacing catheter is indicated for use in atrio-ventricular synchronic temporary intracardiac pacing for a maximum of three (3) days and is designed to transmit an electrical signal from an external pulse generator to the heart or from the heart to a monitoring device.
Device Story
Sync AV II Temporary Pacing Catheter; single catheter system for atrio-ventricular synchronic temporary intracardiac pacing. Device introduced via 8F introducer through right jugular approach. System comprises inner/outer shafts with 7 leads (3 ventricular, 4 atrial) in individual lumens. Passive fixation via flexible stainless steel leads (3 ventricular arms, 4 atrial arms). Transmits electrical signals between external pulse generator and heart; enables dual-chamber sensing and pacing. Used in clinical settings for patients requiring temporary pacing; operated by physicians. Benefits include synchronized pacing capability via single catheter. Performance verified through bench testing, GLP animal study, and prospective clinical study.
Clinical Evidence
Prospective, single-arm, single-site clinical study (n=30) evaluating temporary cardiac pacing. Primary efficacy endpoint: ventricular pacing threshold at 24 hours (mean 1.29V, met goal). Primary safety endpoint: incidence of serious procedural-related complications (met, zero serious device-related complications). Additional metrics: atrial pacing threshold, successful placement, sensing amplitude, pacing impedance, and incidence of lead dislodgement/fracture. GLP animal study (n=4 sheep) confirmed safety and tissue response over 7 days.
Technological Characteristics
8F diameter catheter; 7 unipolar leads (3 ventricular, 4 atrial); passive fixation via flexible stainless steel leads. Compatible with 8F percutaneous introducer. Biocompatibility per ISO 10993-1. Single-use, non-pyrogenic. Electrical connectivity for external pulse generator/monitoring. Bench testing included dimensional, tensile, fatigue, continuity, hipot, torque, corrosion, and electrical safety/EMC.
Indications for Use
Indicated for patients requiring atrio-ventricular synchronic temporary intracardiac pacing for a maximum duration of 3 days.
Regulatory Classification
Identification
Temporary pacemaker electrode: A device consisting of flexible insulated electrical conductors with one end connected to an external pacemaker pulse generator and the other end applied to the heart. The device is used to transmit a pacing electrical stimulus from the pulse generator to the heart and/or to transmit the electrical signal of the heart to the pulse generator. Permanent pacemaker electrode: A device consisting of flexible insulated electrical conductors with one end connected to an implantable pacemaker pulse generator and the other end applied to the heart. The device is used to transmit a pacing electrical stimulus from the pulse generator to the heart and/or to transmit the electrical signal of the heart to the pulse generator.
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FDA U.S. FOOD & DRUG ADMINISTRATION
July 30, 2026
Swift Sync Inc.
% Hrishikesh Gadakar, PhD
Senior Principal
RQM+
5000 Centregreen Way, Suite 100
Cary, NC 27513
Re: K252042
Trade/Device Name: Sync AV II Temporary Pacing Catheter
Regulation Number: 21 CFR 870.3680
Regulation Name: Cardiovascular Permanent Or Temporary Pacemaker Electrode
Regulatory Class: Class II
Product Code: LDF
Dated: July 1, 2026
Received: July 2, 2026
Dear Hrishikesh Gadakar:
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).
U.S. Food & Drug Administration
10903 New Hampshire Avenue
Silver Spring, MD 20993
www.fda.gov
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K252042 - Hrishikesh Gadakar, PhD
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Your device is also subject to, among other requirements, the Quality Management System Regulation (QMSR) (21 CFR Part 820), which includes, but is not limited to, ISO 13485 clause 7.3 (Design controls), ISO 13485 clause 8.3 (Nonconforming product), ISO 13485 clause 8.5.2 (Corrective action), and ISO 13485 clause 8.5.3 (Preventative action). Please note that regardless of whether a change requires premarket review, the QMSR requires device manufacturers to review and approve changes to device design and production (ISO 13485 clause 7.3 and ISO 13485 clause 7.5) and document changes and approvals in the Medical Device File (ISO 13485 clause 4.2.3).
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 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-reporting-combination-products); good manufacturing practice requirements as set forth in the Quality Management System Regulation (QMSR) (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.
All medical devices, including Class I and unclassified devices and combination product device constituent parts are required to be in compliance with the final Unique Device Identification System rule ("UDI Rule"). The UDI Rule requires, among other things, that a device bear a unique device identifier (UDI) on its label and package (21 CFR 801.20(a)) unless an exception or alternative applies (21 CFR 801.20(b)) and that the dates on the device label be formatted in accordance with 21 CFR 801.18. The UDI Rule (21 CFR 830.300(a) and 830.320(b)) also requires that certain information be submitted to the Global Unique Device Identification Database (GUDID) (21 CFR Part 830 Subpart E). For additional information on these requirements, please see the UDI System webpage at https://www.fda.gov/medical-devices/device-advice-comprehensive-regulatory-assistance/unique-device-identification-system-udi-system.
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-devices/medical-device-safety/medical-device-reporting-mdr-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/medical-devices/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-devices/device-advice-comprehensive-regulatory-assistance/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).
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K252042 - Hrishikesh Gadakar, PhD
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Sincerely,
JESSICA L. BATISTA
-5
Digitally signed by JESSICA L.
BATISTA-5
Date: 2026.07.30 17:37:17 -04'00'
Jessica Batista Bertolini
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
Enclosure
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DEPARTMENT OF HEALTH AND HUMAN SERVICES
Food and Drug Administration
# **Indications for Use**
Form Approved: OMB No. 0910-0120
Expiration Date: 07/31/2026
See PRA Statement below.
510(k) Number (if known)
K252042
Device Name
Sync AV II Temporary Pacing Catheter
Indications for Use (Describe)
The Sync-AV II temporary pacing catheter is indicated for use in atrio-ventricular synchronic temporary intracardiac pacing for a maximum of three (3) days and is designed to transmit an electrical signal from an external pulse generator to the heart or from the heart to a monitoring device.
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.**
This section applies only to requirements of the Paperwork Reduction Act of 1995.
**\*DO NOT SEND YOUR COMPLETED FORM TO THE PRA STAFF EMAIL ADDRESS BELOW.\***
The burden time for this collection of information is estimated to average 79 hours per response, including the time to review instructions, search existing data sources, gather and maintain the data needed and complete and review the collection of information. Send comments regarding this burden estimate or any other aspect of this information collection, including suggestions for reducing this burden, to:
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*"An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB number."*
FORM FDA 3881 (8/23)
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PSC Publishing Services (301) 443-6740 EF
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# 1 510(k) Summary
## 1.1 Contact Information
**Sponsor/Manufacturer**
Swift Sync Inc.
455 NE 91st Street
Miami Shores, FL 33138
Phone: 305-799-1435
Email: cmarinykall@swiftsync.net
**Correspondent**
Hrishikesh Gadagkar, Ph. D.
Regulatory Consultant,
RQM+
Phone: 410-245-0501
Email: hgadagkar@rqmplus.com
Date prepared: July 2, 2026
## 1.2 Device Information
Name of Device: Sync AV II Temporary Pacing Catheter
Common or Usual Name: Cardiovascular permanent or temporary pacemaker electrode
Classification Name: Electrode, Pacemaker, Temporary
Regulation Number: 21 CFR 870.3680
Regulatory Class: II
Product Code: LDF
## 1.3 Predicate Device
BioTrace Tempo Temporary Pacing Lead (K160260)
## 1.4 Device Description
The Sync AV II Temporary Pacing Catheter (Sync AV II) consists of a single catheter with the following parts
- Outer Sheath
- Inner Sheath
- Atrial and Ventricular Leads
The Sync AV II is capable of atrio-ventricular synchronic pacing with a single catheter. It is introduced through an 8F introducer catheter to the heart through right jugular approach and has a Working length of 45.7 cm. The Sync AV II consists of an inner and outer shaft with 7 leads
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contained within individual lumens of the Inner Sheath.
## 1.5 INDICATIONS FOR USE
The Sync-AV II Temporary Pacing Catheter is indicated for use in Atrio-Ventricular synchronic temporary intracardiac pacing for a maximum of three (3) days and is designed to transmit an electrical signal from an external pulse generator to the heart or from the heart to a monitoring device.
## 1.6 COMPARISON OF TECHNOLOGICAL CHARACTERISTICS WITH THE PREDICATE DEVICE
**Table 1-1: Device Comparison to the Predicate Device**
| Characteristic | Swift Sync Pacing Catheter | Biotrace Tempo Lead (K160260) |
| --- | --- | --- |
| Intended Use | Intended for the temporary intracardiac pacing of the heart | Same |
| Indication for Use | The Sync-AV II Temporary Pacing Catheter is indicated for use in Atrio-Ventricular synchronic temporary intracardiac pacing for a maximum of three (3) days and is designed to transmit an electrical signal from an external pulse generator to the heart or from the heart to a monitoring device. | The BioTrace Medical Tempo Temporary Pacing Lead is indicated for use in temporary intracardiac pacing for a maximum of seven (7) days and is designed to transmit an electrical signal from an external pulse generator to the heart or from the heart to a monitoring device |
| Product Code | LDF | Same |
| Lead Type | Temporary | Same |
| Lead Introduction Method | By cutdown or by use of a percutaneous catheter introducer or needle cannula | Same |
| Catheter Diameter | 8F | 6F |
| Number of Lumens | Seven (one for each electrode lead) | 1 |
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| Characteristic | Swift Sync Pacing Catheter | Biotrace Tempo Lead (K160260) |
| --- | --- | --- |
| Device Compatibility | Cannula or percutaneous introducer set to accommodate an 8F catheter | Cannula or percutaneous introducer set to accommodate an 6F catheter |
| Distal Configuration | Flexible, curved leads | Straight |
| Fixation | Passive, stabilized flexible stainless steel leads (3 arms in ventricle, 4 arms in atrium) | Active, stabilizer loops deploy into myocardium, and stabilizer balloon inflates to lodge the device into place |
| Lead Tip | Atraumatic | Same |
| Chamber Paced | Right Atrium and Ventricle | Right Ventricle |
| Lead Type | Unipolar | Bipolar |
| Number of Leads | Seven (7) | 1 |
| Number of Electrodes | Seven (3 ventricular, 4 atrial) | Two (2) |
| Single-use only | Yes | Same |
| Non-pyrogenic | Yes | Same |
| Biocompatibility | ISO 10993-1 | Same |
### 1.7 PERFORMANCE DATA
A high-level summary of the testing conducted to confirm the substantial equivalence of the Sync AV II Temporary Pacing Catheter is as follows:
- Dimensional
- Tensile
- Fatigue
- Continuity
- Hipot
- Torque
- Corrosion
- Sterile Barrier/Packaging Testing
- Electrical Safety
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- EMC
- Shelf Life
- Biocompatibility
- GLP Animal Study
- Acute Clinical Study
- Human Factors Study
### 1.7.1 GLP Animal Study Overview
A single-arm GLP study was conducted to examine the safety and effects on tissue of the Sync AV II Temporary Pacing Catheter. 4 adult sheep had the Sync AV II placed under fluoroscopic guidance and paced for a total of 7 days before sacrifice. The device performance, local tissue response, gross necropsy, and histopathology were all evaluated. It was found that the Sync AV II demonstrated no safety concerns and performed as expected.
### 1.7.2 Clinical Study Overview
A single-arm, single site, non-randomized, prospective clinical study was conducted to evaluate the substantial equivalence of the Sync AV II Temporary Pacing Catheter. A total of 30 subjects needing temporary cardiac pacing were enrolled in the study.
The primary efficacy endpoint was ventricular pacing threshold at 24 hours post-implant. The average pacing threshold was 1.29V which met the predefined performance goal.
The primary safety endpoint was the incidence of serious procedural-related complications defined per the clinical protocol. The primary safety endpoint was met with no serious device-related complications.
Additional evaluations included:
- Atrial Pacing Threshold at 24 hours post-implant (powered)
- Successful placement of the device
- Pacing threshold prior to lead removal
- Sensing Amplitude and Pacing Impedance at 24 hours post-implant and prior to lead removal
- Dual chamber sensing and pacing through lead removal
- Incidence of lead dislodgement
- Incidence of lead fracture
### 1.8 SUBSTANTIAL EQUIVALENCE
Based on the same intended use, similar technological characteristics, and the summary of data submitted, the Sync AV II Temporary Pacing Catheter is found to be substantially equivalent to the predicate device. Safety and performance test data including bench testing, GLP animal study, electrical safety testing, and clinical study, demonstrated the device performed as intended without raising new and different questions of safety and effectiveness.
K252042
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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.