The D731 MICRO 27 Ph.I.S.I.O. with 27 micron screen with phosphorylcholine coating and the D733 MICRO 40 Ph.I.S.I.O. with 40 micron screen with phosphorylcholine coating are recommended for use in the arterial line of the extracorporeal circuit during any procedure that requires cardiopulmonary bypass. The filters are used to trap and remove gaseous emboli as well as particulate debris that may be introduced through the arterial line. The device should not be used longer than 6 hours. Contact with blood for longer periods is not advised.
Device Story
Sterile, single-use, disposable arterial line blood filter for cardiopulmonary bypass circuits; flow rate up to 6.0 LPM. Device utilizes 27 or 40 micron screen with phosphorylcholine coating to remove gaseous emboli and particulate debris from arterial perfusate. Used in clinical settings by perfusionists/surgeons during bypass procedures. Output is physical filtration of blood; healthcare providers monitor circuit performance. Benefits include reduction of emboli and debris reaching patient during bypass. Modified from pediatric version by increasing max flow rate and adjusting pore size.
Clinical Evidence
Bench testing only. Performance testing conducted on aged (3+1 years) sterilized devices compared to predicate AF 620/640 filters at 6 LPM flow rate. Results met established specifications. Biocompatibility and packaging data cross-referenced from K051232.
Technological Characteristics
Disposable arterial line filter; 27 or 40 micron screen; phosphorylcholine coating on blood-contact surfaces. Ethylene oxide sterilized. Max flow rate 6 LPM. Materials identical to K051232. Non-pyrogenic fluid path.
Indications for Use
Indicated for use in the arterial line of the extracorporeal circuit during any procedure requiring cardiopulmonary bypass to trap and remove gaseous emboli and particulate debris. Contraindicated for use longer than 6 hours.
Regulatory Classification
Identification
A cardiopulmonary bypass arterial line blood filter is a device used as part of a gas exchange (oxygenator) system to filter nonbiologic particles and emboli (blood clots or pieces of foreign material flowing in the bloodstream which will obstruct circulation by blocking a vessel) out of the blood. It is used in the arterial return line.
Special Controls
*Classification.* Class II (special controls). The special control for this device is the FDA guidance document entitled “Guidance for Cardiopulmonary Bypass Arterial Line Blood Filter 510(k) Submissions.”
Predicate Devices
Sorin AF 620 Ph.I.S.I.O. Arterial Filter
Sorin AF 640 Ph.I.S.I.O. Arterial Filter (K093986)
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K 112525 Pg 10
SEP 2 9 2011
D731/ D733 MICRO Ph.I.S.I.O. Arterial Filters Sorin Group Italia S.r.I.
Special 510(k) August 31, 2011
#### 510(k) SUMMARY
| SUBMITTER: | Sorin Group Italia<br>86, Via Statale 12 Nord<br>41037 Mirandola (MO) Italy |
|----------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| CONTACT PERSON: | Luigi Vecchi<br>Phone: 39 0535 29811<br>Fax: 39 0535 25229 |
| DATE PREPARED: | August 31, 2011 |
| DEVICE TRADE NAME: | D731 MICRO 27 Ph.I.S.I.O. Arterial Filter, Sorin<br>D731 MICRO 27 Arterial Filter with 27 micron<br>screen with phosphorylcholine coating |
| | D733 MICRO 40 Ph.I.S.I.O. Arterial Filter, Sorin<br>D733 MICRO 40 Arterial Filter with 40 micron<br>screen with phosphorylcholine coating |
| COMMON NAME: | Arterial Filter |
| CLASSIFICATION NAME: | Cardiopulmonary Bypass Arterial Line Blood Filter |
| UNMODIFIED DEVICE: | D731 MICRO 27 Ph.I.S.I.O. Pediatric Arterial Filter,<br>Dideco D731 MICRO 27 Pediatric Arterial Filter<br>with 27 micron screen with phosphorylcholine<br>coating |
| | D733 MICRO 40 Ph.I.S.I.O. Pediatric Arterial Filter,<br>Dideco D733 MICRO 40 Pediatric Arterial Filter<br>with 40 micron screen with phosphorylcholine<br>coating (#K051232) |
| PREDICATE DEVICE: | Sorin AF 620 Ph.I.S.I.O. Arterial Filter |
| | Sorin AF 640 Ph.I.S.I.O. Arterial Filter (#K093986) |
# DEVICE DESCRIPTION:
The D731/D733 MICRO Ph.I.S.I.O. Arterial Filters are sterile, non-pyrogenic disposable filter for use in the arterial line of the cardiopulmonary bypass circuit with flow rate not exceeding 6.0 liters/minute. The D731/D733 MICRO Ph.I.S.I.O. are Arterial Filters with 27 and 40 micron filters screen, respectively. The devices are designed to remove potentially harmful gaseous emboli, aggregated blood constituents, and particulate debris, greater than the pore size, from the arterial line perfusate.
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Kn 2525 Pg 2 of 4
D731/ D733 MICRO Ph.I.S.I.O. Arterial Filters Sorin Group Italia S.r.I.
Special 510(k) August 31, 2011
The D731/D733 MICRO Ph.I.S.I.O. Arterial Filters are a modified version of the currently marketed D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial Filters The modifications consist of: an increase of the recommended maximum blood flow rate from 5 to 6 LPM, a change of the device trade name from D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial Filters to D731/D733 MICRO Ph.I.S.I.O. Arterial Filters, and a change of the filter screen pore size from 20 to 27 micron for the D731 MICRO Ph.I.S.I.O. As a consequence of these modifications, the labeling has been updated.
The modified device has unchanged intended use, materials, operating principles, manufacturing process, control mechanisms, sterilization process and fundamental scientific technology.
The manufacturing process in regards to the coating is also unchanged with respect to the unmodified device.
### INDICATION FOR USE:
The D731 MICRO Ph.I.S.I.O. with 27 micron screen with phosphoryIcholine coating and the D733 MICRO Ph.I.S.I.O. with 40 micron screen with phosphoryIcholine coating are recommended for use in the arterial line of the extracorporeal circuit during any procedure that requires cardiopulmonary bypass. The filters are used to trap and remove gaseous emboli as well as particulate debris that may be introduced through the arterial line. The device should not be used longer than 6 hours. Contact with blood for longer periods is not advised.
### TECHNOLOGICAL CHARACTERISTICS:
The D731/D733 MICRO Ph.I.S.I.O. Arterial filters have the same design features, manufacturing process, control mechanisms, and operating principles when compared to the unmodified device. The D731/D733 MICRO Ph.I.S.I.O. Arterial filters utilize the same materials, filtering media and the same main blood flow path as the unmodified devices.
Except for the increase of the maximum blood flow rate from 5 LPM to 6 LPM and the change of the filter screen pore size of the D731 MICRO Ph.I.S.I.O. (modified from 20 to 27 micron), the modified D731/D733 MICRO Ph.I.S.I.O. Arterial filters are identical to the current marketed D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial filters.
No change to the intended use has been made as a result of these modifications. There are no differences in packaging type and material between the D731/D733 MICRO Ph.I.S.I.O. Arterial filters and the unmodified devices, D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial filters
Compared to the predicate device AF 620/640 Ph.I.S.I.O Arterial Filters, the modified D731/D733 MICRO Ph.I.S.I.O. Arterial filters have the same operating principles. control mechanisms, sterilization process, and fundamental scientific technology of the predicate device.
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K112525 pg 3 of 4
D731/ D733 MICRO Ph.I.S.I.O. Arterial Filters Sorin Group Italia S.r.l.
Special 510(k) August 31, 2011
The AF 620/640 Ph.1.S.I.O Arterial Filters predicate device, have also the same recommended maximum blood flow rate of 6 LPM of the modified D731/D733 MICRO Ph.I.S.I.O Arterial filters as well as the same intended use.
The D731/D733 MICRO Ph.I.S.I.O. Arterial filters are ethylene oxide sterilized and have a non-pyrogenic fluid path. They are for single use only.
# NON CLINICAL TEST RESULTS:
Applicable tests were carried out in accordance with the requirements of ISO 10993-1 and the FDA May 1st, 1995 Memorandum on the use of the ISO 10993 standard for biocompatibility testing of raw materials.
The D731/D733 MICRO Ph.I.S.I.O. Arterial Filters have exactly the same materials of the unmodified device, D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial Filters (#K051232). The same formulation of Ph.l.S.l.O. material has been also used to coat all blood contact surfaces.
As no new materials are used with respect to the unmodified device, this 510(k) cross references biocompatibility data for the D731/D733 MICRO Ph.I.S.I.O. Pediatric Arterial Filters (#K051232).
As no packaging changes have been introduced, this 510(k) cross references packaging data previously submitted for the unmodified device (#K051232).
#### IN VITRO TEST RESULTS:
In vitro testing was carried out in accordance with the relevant requirements of "Guidance for Cardiopulmonary Bypass Arterial Line Blood Filter 510(k) Submission" Final Guidance for Industry, dated November 29, 2000.
Testing supplied in the 510(k) premarket notification for the D731/D733 MICRO Ph.I.S.I.O. Arterial Filters includes performance testing that demonstrates compliance with performance specifications.
The tests were carried out on sterilized devices were aged (3 +1 years, worst case) comparing the D731/D733 MICRO Ph.I.S.I.O. modified Arterial Filters vs. the predicate device, AF 620/640 Ph.I.S.I.O. Arterial Filters operated at same max blood flow rate (6 LPM). The results of these tests met established specifications.
### CONCLUSIONS:
The D731/D733 MICRO Ph.I.S.I.O. modified Arterial Filters are substantially equivalent to the predicate device in terms of functionality.
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K112525 pg 4 of 4
D731/ D733 MICRO Ph.I.S.I.O. Arterial Filters Sorin Group Italia S.r.I.
Special 510(k) August 31, 2011
Additional testing has also demonstrated the effectiveness of production techniques to assure that the device is sterile and non-pyrogenic.
In conclusion, test results of this study suggest the D731/D733 MICRO Ph.I.S.I.O. Arterial Filters are equivalent to the AF 620/640 Ph.I.S.I.O. Arterial Filters with respect to device function.
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Image /page/4/Picture/1 description: The image shows a logo for the U.S. Department of Health and Human Services. The logo consists of a stylized eagle with three lines representing its wings. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular pattern around the eagle. The logo is black and white.
Food and Drug Administration 10903 New Hampshire Avenue Document Control Room -WO66-G609 Silver Spring, MD 20993-0002
SEP 2 9 2011
Sorin Group Italia s.r.1. c/o Mr. Barry Sall Principal Consultant Parexel International Consulting 195 West Street Waltham. MA 02451
Re: K112525
Trade/Device Name: D731 MICRO 27 Ph.I.S.I.O. and D733 MICRO 40 Ph.I.S.I.O. Arterial Filters Regulation Number: 21 CFR 870.4260 Regulation Name: Cardiopulmonary Bypass Arterial Line Blood Filter Regulatory Class: Class II Product Code: DTM Dated: August 31, 2011 Received: August 31, 2011
Dear Mr. Sall:
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
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Page 2 - Mr. Barry Sall
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 is 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 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 go to http://www.fda.gov/AboutFDA/CentersOffices/CDRH/CDRHOffices/ucm1.15809.htm for the Center for Devices and Radiological Health's (CDRH's) Office of Compliance. 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/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 Small Manufacturers, International and Consumer Assistance 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.
LL
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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Image /page/6/Picture/0 description: The image shows a handwritten alphanumeric string. The string appears to be "KM2525". The characters are written in a cursive style, with some connections between the letters and numbers. The writing is dark and clear against a white background.
D731/ D733 MICRO Ph.I.S.I.O. Arterial Filters Sorin Group Italia S.r.I.
Special 510(k) August 31, 2011
K112525 510(k) Number (if known):
Device Name: D731 MICRO 27 Ph.I.S.I.O., Sorin D731 MICRO 27 Arterial Filter with 27 micron screen with phosphorylcholine coating and D733 MICRO 40 Ph.I.S.I.O., Sorin D733 MICRO 40 Arterial Filter with 40 micron screen with phosphoryIcholine coating
Indication for Use:
The D731 MICRO 27 Ph.I.S.I.O. with 27 micron screen with phosphorylcholine coating and the D733 MICRO 40 Ph.I.S.I.O. with 40 micron screen with phosphorylcholine coating are recommended for use in the arterial line of the extracorporeal circuit during any procedure that requires cardiopulmonary bypass. The filters are used to trap and remove gaseous emboli as well as particulate debris that may be introduced through the arterial line. The device should not be used longer than 6 hours. Contact with blood for longer periods is not advised.
Prescription Use × (Part 21CFR 801 Subpart D) Over-the- Counter Use AND/OR (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)
LL
(Division Sign-Off) Division of Cardiovascular Devices
510(k) Number_K) | S255_______________________________________________________________________________________________________________________________________________________
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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.
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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?
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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.