K161171 · St. Jude Medical, Inc. · DXO · Aug 15, 2016 · Cardiovascular
Device Facts
Record ID
K161171
Device Name
PressureWire X Guidewire
Applicant
St. Jude Medical, Inc.
Product Code
DXO · Cardiovascular
Decision Date
Aug 15, 2016
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.2870
Device Class
Class 2
Indications for Use
The PressureWire™ X guidewire is indicated to direct a catheter through a blood vessel and to measure physiological parameters in the heart and in the coronary and peripheral blood vessels. Physiological parameters include blood pressure. The PressureWire™ X Guidewire can also measure blood temperature.
Device Story
PressureWire™ X is an interventional guidewire with an integrated distal tip sensor; used to steer catheters and measure physiological parameters (blood pressure, blood temperature) within heart, coronary, and peripheral vessels. Operated by clinicians in a catheter laboratory; the wire connects to a diagnostic computer or hemodynamic recording system via a specific cable or transmitter. The device facilitates real-time hemodynamic monitoring during procedures; aiding clinical decision-making by providing accurate pressure and temperature data. Benefits include precise physiological assessment during catheterization.
Clinical Evidence
Bench testing only. Testing included biocompatibility (ISO 10993-1), sterilization (ISO TS 11135-2), particulate matter (USP <788>), container testing (USP <661>), and design verification/validation (physical, mechanical, and coating integrity testing for fractures, friction force, diameter, and straightness).
Technological Characteristics
Guidewire with integrated distal tip pressure/temperature sensor. Features new distal tip design and sensor coating. Sterilized via Ethylene Oxide. Connects to external diagnostic computer/hemodynamic recording system. Complies with ISO 10993-1, ISO TS 11135-2, USP <788>, and USP <661>.
Indications for Use
Indicated for patients requiring catheter guidance through blood vessels and measurement of physiological parameters (blood pressure, blood temperature) in the heart, coronary, and peripheral blood vessels.
Regulatory Classification
Identification
A catheter tip pressure transducer is a device incorporated into the distal end of a catheter. When placed in the bloodstream, its mechanical or electrical properties change in relation to changes in blood pressure. These changes are transmitted to accessory equipment for processing.
{0}------------------------------------------------
Image /page/0/Picture/1 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo consists of a circular seal with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" around the perimeter. Inside the circle is an abstract symbol that resembles a stylized caduceus, with three human profiles facing right, suggesting a connection to health and human services.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Center - WO66-G609 Silver Spring, MD 20993-0002
August 15, 2016
St. Jude Medical Inc. Huda Yusuf Regulatory Specialist II 5050 Nathan Lane North Plymouth, Minnesota 55442
Re: K161171
Trade/Device Name: PressureWire™ X Regulation Number: 21 CFR 870.2870 Regulation Name: Catheter Tip Pressure Transducer Regulatory Class: Class II Product Code: DXO, DQX, DRG Dated: April 25, 2016 Received: April 26, 2016
Dear Huda Yusuf:
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 Part 807); labeling (21 CFR Part 801); medical device reporting (reporting of medical devicerelated adverse events) (21 CFR 803); good manufacturing practice requirements as set forth in
{1}------------------------------------------------
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.
Mude Yellman
for
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{2}------------------------------------------------
# Indications for Use
510(k) Number (if known) K161171
Device Name PressureWire™ X
Indications for Use (Describe)
The PressureWire™ X guidewire is indicated to direct a catheter through a blood vessel and to measure physiological parameters in the heart and in the coronary and peripheral blood vessels. Physiological parameters include blood pressure. The PressureWire™ X Guidewire can also measure blood temperature.
| Type of Use (Select one or both, as applicable) | |
|--------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------|
| <span style="font-size: 10pt;"> <input checked="true" type="checkbox"/> Prescription Use (Part 21 CFR 801 Subpart D) </span> | <span style="font-size: 10pt;"> <input type="checkbox"/> Over-The-Counter Use (21 CFR 801 Subpart C) </span> |
### 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:
> Department of Health and Human Services Food and Drug Administration Office of Chief Information Officer Paperwork Reduction Act (PRA) Staff PRAStaff@fda.hhs.gov
"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."
{3}------------------------------------------------
# For the St. Jude Medical PressureWire™ X (per 21CFR 807.92)
## 1. SUBMITTER/510(K) HOLDER
St. Jude Medical 5050 Nathan Lane North Plymouth, MN 55442
| Contact Person: | Huda Yusuf |
|-----------------------------|------------------|
| Telephone: | 612-900-9527 |
| Date Prepared: | April 25, 2016 |
| Alternative Contact Person: | Erdie De Peralta |
| Telephone: | 978-577-3481 |
| Date Prepared: | April 25, 2016 |
# 2. DEVICE NAME
| Proprietary Name: | PressureWire™ X |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Common/Usual Name: | PressureWire™ X |
| Classification Name: | Transducer, Pressure, Catheter Tip (870.2870)<br>Wire, Guide, Catheter (870.1330)<br>Transmitters and Receivers, physiological signal, radiofrequency (870.2910) |
# 3. PREDICATE DEVICE
- PressureWire™ Certus™ and Aeris™, cleared November 13, 2014 under K140466 .
# 4. DEVICE DESCRIPTION
The PressureWire™ X guidewire has an integrated sensor element at the tip to enable measurements of physiological parameters. The wire is introduced into the patient's blood vessel. A torque device is used to steer the wire and sensor into the required position for
{4}------------------------------------------------
pressure measurements according to standard clinical practice. PressureWire™ X guidewire is available in two different lengths.
The guidewire is uniquely paired with a specific connection cable or with a specific transmitter. Both PressureWire™ X guidewire connection configurations connect to a diagnostic computer or a catheter laboratory hemodynamic recording system.
# 5. INDICATIONS FOR USE
The PressureWire™ X guidewire is indicated to direct a catheter through a blood vessel and to measure physiological parameters in the heart and in the coronary and peripheral blood vessels. Physiological parameters include blood pressure. The PressureWire™ X guidewire can also measure blood temperature.
# 6. PREDICATE DEVICE COMPARISON
PressureWire™ Certus™ and Aeris™ were cleared by FDA under 510(k) K140466 on November 13, 2014. The subject device is substantially equivalent to the predicate device in terms of intended uses, indication for use, operational characteristics, and fundamental design and technology characteristics.
The subject device, PressureWire™ X guidewire, is different from the last previous version of PressureWire™, PressureWire™ Certus™ and Aeris™ in the following ways:
- New Distal Tip Design ●
- New Shipping Box Design ●
- New Single IFU Booklet ●
- New Coating on Sensor Guidewire ●
# 7. TESTING SUMMARY
The PressureWire™ X guidewire has been tested and is in compliance with ISO 10993-1:2009 with C1:2010), Biological evaluation of medical devices - Part 1: Evaluation and testing within a risk management process, ISO TS 11135-2:2008, Sterilization of health care products - Ethylene Oxide - Part 2 Guidance on the application of ISO 11135-1, USP 33-NF 28 General chapter <788> Particulate matter in injections, and USP 36 <661> Containers -Plastics.
In addition to the Biocompatibility, Sterilization and Particulate testing performed, design verification and validation was performed on the PressureWire™ X guidewire in compliance with internal design control procedures which included bench testing. This bench testing
{5}------------------------------------------------
included physical, mechanical and coating integrity testing for fractures, friction force, and wire diameter and straightness.
The results of this testing concludes the PressureWire™ X guidewire is determined to be safe and effective and is substantially equivalent to the predicate device PressureWire™ Certus TM and PressureWire™ Aeris cleared in K140466.
# 8. Substantial Equivalence
The fundamental scientific technology for the subject device is the same for predicate device regarding signal transfer, mechanical properties and intended use. PressureWire™ X guidewire is substantially equivalent to the predicated device in intended use, indication for use, fundamental design and technology, and operating principles. Both devices connect to a diagnostic computer or a catheter laboratory hemodynamic recording system to enable measurements of physiological parameters with minor design changes incorporated into the PressureWire™ X guidewire from the predicate device:
- New Distal Tip Design
- New Shipping Box Design
- New Single IFU Booklet ●
- New Coating on Sensor Guidewire
The subject device, PressureWire™ X Guidewire, meets the design inputs and raises no new safety or efficacy concerns. PressureWire™ X Guidewire is determined to be substantially equivalent to the presently marketed predicated device, K140466.
# 9. Conclusion
The results of these activities demonstrate that the PressureWire™ X Guidewire is as safe, as effective, and performs as well as or better than the predicate device.
Predicate graph will load when search results are available.
Embedding visualization will load when search results are available.
PDF viewer will load when search results are available.
Loading panels...
Select an item from Submissions
Click any panel, subpart, regulation, product code, or device to see details here.
Section Matches
Results will appear here.
Product Code Matches
Results will appear here.
Special Control Matches
Results will appear here.
Loading collections...
Loading
My Alerts
You will receive email notifications based on the filters and frequency you set for each alert.
Sort by:
Create Alert
Search Filters
Agent Token
Create a read-only bearer token for Claude, ChatGPT, or other agents that can call HTTP APIs.
Copy this now. It will not be shown again.
Connected apps
Apps you authorized through browser sign-in. Disconnecting revokes their access immediately.
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.