The Levitronix CentriMag Back-Up Console is indicated for use with the Levitronix CentriMag Extracorporeal Blood Pumping System and as a back-up to the CentriMag Primary Console. The Levitronix CentriMag Extracorporeal Blood Pumping System is indicated to pump blood through the extracorporeal bypass circuit for extracorporeal circulatory support for periods appropriate to cardiopulmonary bypass (up to six hours). It is also indicated for use in extracorporeal circulatory support systems (for periods up to six hours) not requiring cardiopulmonary bypass (e.g., valvuloplasty, surgery of the vena cava or aorta, liver transplants etc).
Device Story
The Levitronix CentriMag Back-Up Console is a microprocessor-based controller for the CentriMag Extracorporeal Blood Pumping System. It monitors system sensors, generates motor control signals, manages alarm functions, and displays data on an alphanumeric screen. The device operates on single-phase AC power and includes a non-rechargeable, field-replaceable internal battery for backup during AC power loss. It is used in clinical settings to maintain extracorporeal blood flow during bypass or circulatory support procedures. By providing continuous pump control and monitoring, it ensures stable blood circulation, assisting clinicians in managing patients during complex surgeries.
Clinical Evidence
Bench testing only. Performance characteristics were tested and compared against the commercially available predicate device.
Technological Characteristics
Microprocessor-based controller; single-phase AC power; non-rechargeable, field-replaceable internal battery; alphanumeric display; sensor monitoring and motor control circuitry.
Indications for Use
Indicated for patients requiring extracorporeal circulatory support or cardiopulmonary bypass for up to six hours, including procedures such as valvuloplasty, surgery of the vena cava or aorta, and liver transplants.
Regulatory Classification
Identification
A nonroller-type cardiopulmonary and circulatory bypass blood pump is a prescription device that uses a method other than revolving rollers to pump the blood through an extracorporeal circuit for periods lasting less than 6 hours for the purpose of providing either:(i) Full or partial cardiopulmonary bypass (i.e., circuit includes an oxygenator) during open surgical procedures on the heart or great vessels; or(ii) Temporary circulatory bypass for diversion of flow around a planned disruption of the circulatory pathway necessary for open surgical procedures on the aorta or vena cava.
Special Controls
*Classification* —Class II (special controls). The special controls for this device are:(i) Non-clinical performance testing must perform as intended over the intended duration of use and demonstrate the following: Operating parameters, dynamic blood damage, heat generation, air entrapment, mechanical integrity, and durability/reliability;
(ii) The patient-contacting components of the device must be demonstrated to be biocompatible;
(iii) Sterility and shelf life testing must demonstrate the sterility of patient-contacting components and the shelf life of these components; and
(iv) Labeling must include information regarding the duration of use, and a detailed summary of the device- and procedure-related complications pertinent to use of the device.
(b)
*Nonroller-type temporary ventricular support blood pump* —(1)*Identification.* A nonroller-type temporary ventricular support blood pump is a prescription device that uses any method resulting in blood propulsion to provide the temporary ventricular assistance required for support of the systemic and/or pulmonary circulations during periods when there is ongoing or anticipated hemodynamic instability due to immediately reversible alterations in ventricular myocardial function resulting from mechanical or physiologic causes. Duration of use would be less than 6 hours.(2)
*Classification.* Class III (premarket approval).(c)
*Date premarket approval application (PMA) or notice of completion of product development protocol (PDP) is required.* A PMA or notice of completion of a PDP is required to be filed with FDA on or before September 8, 2015, for any nonroller-type temporary ventricular support blood pump that was in commercial distribution before May 28, 1976, or that has, on or before September 8, 2015, been found to be substantially equivalent to any nonroller-type temporary ventricular support blood pump that was in commercial distribution before May 28, 1976. Any other nonroller-type temporary ventricular support blood pump shall have an approved PMA or declared completed PDP in effect before being placed in commercial distribution.
{0}------------------------------------------------
K 051209
SEP = 8 2005
# 510(k) Summary Attachment 4.
# 510(k) Summary for Levitronix CentriMag Back-Up Console
This summary of 510(k) safety and effectiveness information is being submitted
in the submitted of the Madinal Devices Act (SMDA) of 1990 and Title 21 of This summary of 510(c) salely and enections of 1990 and Title 21 of
in accordance with the Safe Medical Devices Act (SMDA) of 1990 and Title 21 of
the Safe Medical Province B in accordance with the Sale Medical Devices 7.0. (1.1.1.1.)
the Code of Federal Regulations, Part 807, and in particular §807.92.
## Application Information: A.
| Date Prepared: | May 10, 2005 |
|-----------------------------|---------------------------------------------------------------------------------------------------------------|
| Submitter's Name & Address: | Levitronix LLC<br>45 First Avenue<br>Waltham, MA 02451 |
| Contact Person: | Farzad Parsaie<br>V.P., RA/QA<br>Ph: (781) 622-5075<br>Fax: (781) 622-5090<br>e-mail: fparsaie@levitronix.com |
#### Device Information: B.
| Trade or Proprietary Name: | Levitronix CentriMag® Back-Up Console |
|----------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------|
| Common or Usual Name: | Cardiopulmonary Bypass Pump<br>Console |
| Classification Name: | Class II, DWA, 21 CFR - 870.4380<br>Control, Pump Speed, Cardiopulmonary<br>Bypass |
| Performance Standard: | Performance standards do not currently<br>exist for these devices. None<br>established under section 514 of the<br>Food, Drug and Cosmetic Act. |
#### C. Predicate Device:
Levitronix CentriMag Console (K020271)
{1}------------------------------------------------
#### Device Description D.
The Levitronix CentriMag Back-Up Console is a microprocessor-based The Levitronix CentriMag Back-op Sonerates the primary Motor control signal, device. The microprocessor generates the pinhaly outputs, and provides
monitors system sensors, generates front display outputs, and provides monitors system sensors, generates the sensor data for use in
alarm functions. The microprocessor acquires the sensor data for used alarm functions. The fillcroprocessor acquires the summeric screen is used is to display monitored data.
The CentriMag Back-Up Console uses single phase AC power and is
care and is a mate of a c o a RM In addition, each Back-Up The CentriMag Back-Op Console associate in addition, each Back-Up capable of a liow Tate of up to one of eld replaceable internal battery Console contains a non-rechargeable, field vepass
that is capable of maintaining Back-Up Console functionality in the event of a loss of AC Power.
#### Intended Use ய்
The Levitronix CentriMag Back-Up Console is indicated for use with the The Levitronix CentriMag Back-Op Sonosia System and as a
Levitronix CentriMag Extracorporeal Blood Pumping System and as a Levitronix CentriMag Extracorporcur Drived Console. The Levitronix CentriMag back-up To the Centrilian Thinary Sononic ted to pump blood through Extracorporeal Blood Fulliping Oystem is instructeal circulatory support for the extracorporeal bypass cirodicter on existent more). It is also periods approphate to cardiopalmonaly by provinsystems (for periods indicated for use in extracorporound cardiopulmonary bypass (e.g., up to six frours) not requiring comport during mitral valve reoperation, surgery valvaloplacty, on or aorta, liver transplants etc).
#### Technological Characteristics г.
Levitronix CentriMag Back-Up Console has technological The The Levitronix - Ochanniag - Daily of Chicate device. The differences between Characteristics similar to the processes are limited to flow and pressure the proposed capabilities and associated alarm scheme.
The Levitronix CentriMag Back-Up Console is a microprocessor-based The Levillonix Ochthilag Back of generates the primary Motor control signal, device. The microprocessor gonerates front display outputs, and provides monitors system schools, gonerator from the sensor data for use in alami functions. The millions and alams. An alphanumeric screen is used to display monitored data.
The CentriMag Back-Up Console uses single phase AC power and is The CentriMag Backeop Consele association, each Back-Up Capable of a llow falls of up co on- field replaceable internal battery Console contains a non-roonary-k-Jp Console functionality in the event of a loss of AC Power.
{2}------------------------------------------------
# Comparison to Predicate Device G.
The Levitronix CentriMag Back-Up Console has indications for use which The Levitronix Centriviag Back-Op Console device, is composed of the is substantially equivalent to the predicate device, has equivalent same of equivalent materials as the produces functional characteristics
design features as the predicate device, and has functional characteristics. design features as the predicate ucvio, and neadicate device. Due to
which are the same or equivalent to those of the predicate design which are the same of equivalence to use, materials of composition, design the equivalency of indications for use, materials in the evice raises no new safety or effectiveness issues.
## Summary of Performance Data H.
The performance characteristics of the Levitronix CentriMag Back-Up The performance characterisates of the Levith Levith Levith performance Console were lested and computed with the commercially available predicate device.
{3}------------------------------------------------
Image /page/3/Picture/2 description: The image shows the logo for the U.S. Department of Health & Human Services. The logo features the department's name encircling a symbol. The symbol is a stylized representation of a human figure, with three overlapping profiles suggesting a sense of community and support. The profiles are black, and the text is also black.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
SEP - 8 2005
Levitronix LLC c/o Mr. Farzad Parsaie VP, RA/QA 45 First Avenue Waltham, MA 02451
Re: K051209
CentriMag® Extracorporeal Blood Pumping System Regulation Number: 21 CFR 870.4380 Regulation Name: Cardiopulmonary Bypass Pump Speed Control Regulatory Class: Class II Product Code: KFM Dated: August 2, 2005 Received: August 3, 2005
Dear Mr. Parsaie:
We have reviewed your Section 510(k) premarket notification of intent to market the device We have reviewed your Section 510(x) premated is substantially equivalent (for the indications
referenced above and have determined the device is substant also in interstate referenced above and have decembed the arrived medicate devices marketed in interstate for use stated in the enclosue) to the enactment de of the Medical Device Amendments, or to commerce prior to May 28, 1970, the chacultence with the provisions of the Federal Food. Drug, devices that have been reciassince in accordance while approval application (PMA).
and Cosmetic Act (Act) that do not require approval of a previsions of the Act . The and Cosmetic Act (Act) that do not require approvate experal controls provisions of the Act. The You may, therefore, market the device, seejeer to the .
general controls provisions of the Act include requirements for annual registration and general controls provisions of the Fectiners required in against misbranding and adulteration.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it If your device is classified (See above) this existing major regulations affecting your device can
may be subject to such additional controls. Existing major may be subject to such additional controlis. Existing in and Register be found in the Code of Pouchal Regarines with the Federal Register.
{4}------------------------------------------------
Page 2 - Mr. Farzad Parsaie
Please be advised that FDA's issuance of a substantial equivalence determination does not mean r that FDA has made a determination that your device complies with other requirements of the Act that I DA has made a doterminations administered by other Federal agencies. You must of any I callared and regarantents, including, but not limited to: registration and listing (21 Comply with an the Hot STequirements, 01); good manufacturing practice requirements as set CFR in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic forth in the qualis) 3500110 (Sections 531-542 of the Act); 21 CFR 1000-1050. product radiation only of provisions (sketing your device as described in your Section 510(k) This letter will anow you to organization of substantial equivalence of your device to a legally promatice notification: "The Dr. Interessification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801), please If you desire spocific acries ion your 240) 276-0120. Also, please note the regulation entitled, Connect the Office of Course to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small other general miorination on your response Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its Internet address http://www.fda.gov/cdrh/industry/support/index.html.
Sincerely yours,
uma R. lochner
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
{5}------------------------------------------------
# Indications for Use
510(k) Number (if known):
K051209
Device Name:
CentriMag® Back-Up Console
Indications For Use:
The Levitronix CentriMag Back-Up Console is indicated for use with the Levitronix The Levitronix Ochthing Back op Sping System and as a back-up to the CentriMag CentriMag Extracorpored. Blood Pamping of Extracorporeal Blood Pumping System is Frinary Gollson. The Ectirents Son.net contracorporeal bypass circuit for extracorporeal indicated to pump blood through the to cardiopulmonary bypass (up to six hours). circulatory support for ponous appropreal circulatory support systems (for periods up It is also indicated for ase in extraosme cardiopulmonary bypass (e.g., valvuloplasty, to 'six' nours', not 'requiring 'ochiple' outdiving surgery of the vena cava or aorta, liver transplants etc).
× Prescription Use (Part 21 CFR 801 Subpart D) AND/OR
Over-The-Counter Use (21 CFR 807 Subpart C)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) .
Concurrence of CDRH, Office of Device Evaluation (ODE)
Donna R. Vochner
(Division Sign-Off) Division of Cardiovascular Devices
510(k) Number Kost 209
Page 1 of _1 _________________________________________________________________________________________________________________________________________________________________
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1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
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Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
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Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
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.
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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.
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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.
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7. Product codes and the regulations tree
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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.