The SplitWire Percutaneous Transluminal Angioplasty Scoring device is indicated for the use with percutaneous transluminal angioplasty (PTA) catheters to facilitate dilation of stenoses in the iliac, femoral, ilio-femoral, popliteal, infrapopliteal, and renal arteries and treatment of obstructive lesions of native or synthetic arteriovenous dialysis fistulae.
Device Story
SplitWire is an accessory device used with percutaneous transluminal angioplasty (PTA) balloon catheters to facilitate lesion dilation. It consists of two wires joined at the distal end: a tracking wire for positioning the PTA balloon and a scoring wire with a triangular profile. During balloon inflation, the scoring wire applies concentrated pressure to the lesion. The distal section features a radiopaque coil and soft polymer coating for atraumatic navigation. Used by clinicians in interventional settings, the device aids in treating arterial stenoses and dialysis fistula obstructions. By focusing balloon pressure, it potentially improves dilation efficacy compared to standard balloon angioplasty. The device is single-use and compatible with various PTA balloon diameters and lengths.
Clinical Evidence
No human clinical data provided. Evidence consists of bench testing (ISO 10555-1, angioplasty catheter dilation performance, compatibility testing, simulated use) and in vivo GLP animal testing to confirm safety and functional equivalence to the predicate.
Technological Characteristics
Two-wire system (scoring wire with triangular profile, tracking wire with radiopaque markers); .014" scoring member; .035" or .018" guidewire compatibility; distal radiopaque coil; soft polymer coating; ethylene oxide sterilization; standalone accessory device; non-integrated with balloon.
Indications for Use
Indicated for patients requiring dilation of stenoses in iliac, femoral, ilio-femoral, popliteal, infrapopliteal, and renal arteries, and treatment of obstructive lesions in native or synthetic arteriovenous dialysis fistulae, when used with PTA catheters.
Regulatory Classification
Identification
A percutaneous catheter is a device that is introduced into a vein or artery through the skin using a dilator and a sheath (introducer) or guide wire.
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Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized caduceus, a symbol often associated with medicine and healthcare. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" are arranged in a circular pattern around the caduceus.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
May 31, 2016
Rex Medical c/o Ms. Susan Goldstein-Falk mdi Consultants, Inc. 55 Northern Blvd., Suite 200 Great Neck. NY 11021
Re: K113103
Trade/Device Name: SplitWire Percutaneous Transluminal Angioplasty Scoring Device Regulation Number: 21 CFR 870.1250 Regulation Name: Percutaneous Catheter Regulatory Class: Class II (two) Product Code: PNO Dated: April 16, 2012 Received: April 20, 2012
Dear Ms. Goldstein-Falk:
This letter corrects our substantially equivalent letter of May 22, 2012.
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 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
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Page 2 - Ms. Susan Goldstein-Falk
CFR Part 807): labeling (21 CFR Part 801): medical device reporting (reporting of medical device-related adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please 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" (21CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to
http://www.fda.gov/MedicalDevices/Safety/ReportalProblem/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.
# Misti L. Malone -S
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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# Exhibit D
## Indications For Use
Page 1 of
# 510(k) Number (if known): K113103
Device Name: SplitWire Percutaneous Transluminal Angioplasty Scoring Device
### Indications for Use:
The SplitWire Percutaneous Transluminal Angioplasty Scoring device is indicated for the use with percutaneous transluminal angioplasty (PTA) catheters to facilitate dilation of stenoses in the iliac, femoral, ilio-femoral, popliteal, infrapopliteal, and renal arteries and treatment of obstructive lesions of native or synthetic arteriovenous dialysis fistulae.
Prescription Use × (Per 21 CFR 801.109)
OR
Over-The Counter Use (Optional Format 1-2-96)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|--------------------------------------------------------|-----------|
| | The Walle |
(Division Sign-Off) Division of Cardiovascular Devices
510(k) Number_K113103
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Exhibit 1
510(k) SplitWire Device
Image /page/3/Picture/2 description: The image shows the logo for REX MEDICAL. The logo is in black and white, with the word "REX" in large, bold letters. The word "MEDICAL" is in smaller letters to the right of "REX". There is a curved line above and below the word "REX".
MAY 2 2 2012
1100 East Hector Street, Suite 245, Conshohocken, PA 19428
# 510(K) SUMMARY ·
This summary of 510(k) information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR §807.92.
The assigned 510(k) number is: K113103
- 1. Submitter's Identification:
Rex Medical, LP 1100 East Hector Street Suite 245 Conshohocken, PA 19428 610-940-0665
Contact: Mr. Walter H. Peters Quality Manager
Date Summary Prepared: October 14, 2011
#### 2. Name of the Device:
SplitWire Percutaneous Transluminal Angioplasty Scoring Device
#### Predicate Device Information: 3.
VascuTrak PTA Dilation Catheter (K063657)
#### Device Description: 4.
The SplitWire Percutaneous Transluminal Angioplasty Scoring Device is designed to facilitate the dilatation of stenoses.
The SplitWire device is intended to be used with a percutaneous transluminal angioplasty balloon catheter.
The SplitWire device consists of two (2) wires that are joined at the distal end. The larger wire (scoring wire) has a triangular profile near the distal end, that when the balloon is inflated applies pressure to the lesion being treated. The smaller wire (tracking wire) is used to position the PTA balloon catheter in the
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proper location adjacent to the lesion. There are two (2) radiopaque markers bands on the tracking wire that indicate the location for the PTA balloon catheter placement.
The distal section of the SplitWire is designed to be atraumatic with a radiopaque coil for visibility. The distal section is coated with a soft polymer.
The device is used in the same manner as the predicate device and other substantially equivalent 510(k) cleared devices.
#### 5. Intended Use:
The SplitWire Percutaneous Transluminal Angioplasty Scoring device is indicated for the use with perculaneous transluminal angioplasty (PTA) catheters to facilitate dilation of stenoses in the iliac, femoral, illio-femoral, popliteal, infrapopliteal, and renal arteries and treatment of obstructive lesions of native or synthetic arteriovenous dialysis fistulae.
#### 6. Comparison to Predicate Devices:
| Attribute | SplitWire PTA Scoring Device | VascuTrak PTA Dilation<br>Catheter (K063657) |
|------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Indication For Use | intended for the use with<br>percutaneous transluminal<br>angioplasty (PTA) catheters to<br>facilitate dilation of stenoses in<br>the iliac, femoral, ilio-femoral,<br>popliteal , infra-popliteal, and<br>renal arteries and treatment of<br>obstructive lesions of native or<br>synthetic arteriovenous dialysis<br>fistulae. | intended to dilate stenosis in<br>the iliac, femoral, ilio-femoral,<br>popliteal, infra-popliteal<br>arteries and renal arteries and<br>for the treatment of obstructive<br>lesions of native or synthetic<br>arteriovenous dialysis fistulae. |
| Overall Device Length | 90cm, 180cm, 260cm | 80cm, 140cm. |
| Balloon Length | Compatible with balloon lengths<br>of 20-80mm | 20mm, 40, 60, 80, 100, 120,<br>150, 200, 250, 300 |
| Balloon Diameter | Unlimited | 2-7mm |
| Integrated Balloon | No | Yes |
| Scoring Members | 1 | 1 plus procedural guidewire |
| Scoring Member Profile | Triangular | Round |
| Scoring Member Size | .014" | .010", .018" procedural<br>guidewire |
| Scoring Member fixed to<br>balloon | No | No |
| Rated Burst Pressure | Dependent on RBP of balloon<br>used | 12atm |
| Guidewire Compatibility | .035" or .018" | .018" |
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| Introducer Compatibility | Dependent on the introducer<br>compatibility of the balloon used | 7Fr |
|--------------------------|------------------------------------------------------------------|------------------------|
| Single Use | Yes | Yes |
| Sterilization | Ethylene Oxide Process | Ethylene Oxide Process |
#### 7. Discussion of Non-Clinical Tests Performed for Determination of Substantial Equivalence:
Comparative functional testing to the predicated devices was performed based on device attributes, performance and safety. Bench testing was conducted to ensure that the SplitWire device performed as intended. Testing included:
- General requirements for intravascular catheters: ISO 10555-1
- Angioplasty Catheter Dilation Performance Testing ●
- . Compatibility with PTA Balloon Catheters
- . Simulated Use Testing
In Vivo GLP animal testing (Reference Exhibit 8) showed equivalence during use for safety. Testing results revealed the subject device to be substantially equivalent to the predicate device.
#### 8. Conclusions:
The subject device, the SplitWire Percutaneous Transluminal Angioplasty Scoring Device, has the same intended use as the predicate device, the VascuTrak PTA Dilation Catheter (K063657). Bench testing and non-clinical testing supplied within our submission demonstrates that there are not any differences in their technological characteristics thereby not raising any new questions of safety and effectiveness. Therefore, the SplitWire Percutaneous Transluminal Angioplasty Scoring Device is substantially equivalent to the predicate device, the VascuTrak PTA Dilation Catheter (K063657).
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Learn the FDA Browser
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.