K953904 · 3M Health Care, Ltd. · DWB · Apr 19, 1996 · Cardiovascular
Device Facts
Record ID
K953904
Device Name
SARNS 9000 UNIVERSAL ROLLER PUMP
Applicant
3M Health Care, Ltd.
Product Code
DWB · Cardiovascular
Decision Date
Apr 19, 1996
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.4370
Device Class
Class 2
Attributes
Therapeutic
Indications for Use
The Sarns 9000 Universal Roller Pump is indicated for use in extracorporeal circulation of blood for arterial regional perfusion, and cardiopulmonary bypass procedures only, when used by a qualified perfusionist who is experienced in the operation of Sarns or similar equipment.
Device Story
Microprocessor-controlled 2-roller peristaltic pump; provides extracorporeal blood circulation for cardiopulmonary bypass and arterial regional perfusion. Input: electrical power from Sarns 9000 Perfusion System; mechanical rotation of rollers. Operation: adjustable occlusion; flows up to 9.99 L/min; speeds up to 250 RPM. Output: controlled blood flow. Used in clinical settings (e.g., OR) by qualified perfusionists. Healthcare providers monitor pump speed/flow to manage patient circulation during bypass. Benefits: enables life-sustaining blood circulation during cardiac/vascular procedures.
Clinical Evidence
Bench testing only. No clinical data provided. Performance equivalence established through nonclinical testing and EMC evaluation.
Technological Characteristics
Microprocessor-controlled 2-roller peristaltic pump. Circuit boards utilize Surface Mount Technology (SMT) components. Powered by Sarns 9000 Perfusion System. Adjustable occlusion mechanism. Flow capacity up to 9.99 L/min; max speed 250 RPM.
Indications for Use
Indicated for patients requiring extracorporeal circulation of blood for arterial regional perfusion and cardiopulmonary bypass procedures. Intended for use by qualified, experienced perfusionists.
Regulatory Classification
Identification
A roller-type cardiopulmonary bypass blood pump is a device that uses a revolving roller mechanism to pump the blood through the cardiopulmonary bypass circuit during bypass surgery.
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# Section 2 - Summary & Certification
## 2.1 510(k) Summary
A 510(k) Summary of Safety and Effectiveness is on the next page.
K953904
APR 19 1996
3M Confidential
Page 5 of 541
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3M Health Care
Sarns™ and CDI™ Products
6200 Jackson Road
PO Box 1247
Ann Arbor, MI 48106-1247
USA
800 521 2818 Tel
313 663 4145 Tel
313 663 7981 Fax
3M
K353904
August 9, 1995
# 510(k) SUMMARY
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92. The assigned 510(k) number is K353904.
This 510(k) is for the Sarns 9000 Universal Roller Pump, a "Roller-type cardiopulmonary bypass blood pump" and "Cardiopulmonary bypass pump speed control". The new Sarns 9000 Universal Roller Pump is substantially equivalent to the existing Sarns 9000 Universal Roller Pump (K871131).
The Sarns 9000 Universal Roller Pump is a microprocessor controlled 2-roller peristaltic pump with adjustable occlusion. The pump is capable of flows up to 9.99 L/min (depending on pump head tubing used) at pump speeds up to 250 RPM. The Sarns 9000 Universal Roller Pump is dependent on the Sarns 9000 Perfusion System to provide power.
The Sarns 9000 Universal Roller Pump is indicated for use in extracorporeal circulation of blood for arterial regional perfusion, and cardiopulmonary bypass procedures only, when used by a qualified perfusionist who is experienced in the operation of Sarns or similar equipment.
The Sarns 9000 Universal Roller Pump has different technological characteristics from the predicate device. The design and the manufacturing process have been changed. The modified roller pump is manufactured using some Surface Mount Technology (SMT) components and processes to produce the circuit boards which contain the pump electronics. The electronic packaging of some of the components on these circuit boards is SMT instead of Through-Hole Technology (THT). Also, the software has undergone minor changes to remap the I/O addresses.
The Sarns 9000 Universal Roller Pump has the same performance as the predicate device. Nonclinical tests were performed on the device to determine substantial equivalence. Electromagnetic Compatibility (EMC) tests were also performed to ensure equivalent or better results.
Cheryl Rosenberg
(313) 663-4145 Phone
(313) 663-5062 Fax
Page 6 of 541
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3M Confidential
Page 7 of 541
## 2.2 Safety Literature Search
I certify that I have conducted a reasonable search of all information known or otherwise available to me about the types and causes of safety and/or effectiveness problems that have been reported for blood roller pumps. I further certify that I am aware of the types of problems to which blood roller pumps are susceptible and that the following list of safety and/or effectiveness problems about blood roller pumps is complete and accurate:
1.) Air Emboli
2.) Hemolysis
3.) Loss of speed control
4.) Random pump stops
Below is a bibliography of the materials upon which the above summary is based:
1.) Customer Field Input Log, various dates, Sarns, 3M Health Care
2.) Intermittent Failure of a Stockert/Shiley Multiflow Roller Pump Module, The Journal of Extra-Corporeal Technology, Volume 25, Number 3, 1993
3.) Medical Device Report M566956, M186992, M186044, M138277, various dates, Sarns, 3M Health Care
4.) Medical Device Report M494536, filed 4/21/94, Sarns, 3M Health Care
5.) Medical Device Report M444060, M123912, M111730, M101274, various dates, Sarns, 3M Health Care
6.) Medical Device Report M435457, M242746, M225052, M184140, M138914, M174191, various dates, Sarns, 3M Health Care
7.) Medical Device Report M377761, filed 2/26/93, Sarns, 3M Health Care
8.) Medical Device Report M125141, received 6/24/86, Cobe Labs, Inc.
9.) Medical Device Report M269021, M244886, M244883, M225527, M210562, M210551, M210545, M129763, various dates, Shiley, Inc.
10.) Medical Device Report M266724, M245762, M243742, M221182, various dates, Shiley, Inc.
11.) Medical Device Report M253241, M250682, M225194, M221859, various dates, Shiley, Inc.
12.) Medical Device Report M235614, M233235, various dates, Shiley, Inc.
13.) Medical Device Report M220822, M212362, M212346, M210217, M166630, M164988, M137248, various dates, Shiley, Inc.
14.) Medical Device Report M210544, received 8/17/90, Shiley, Inc.
15.) Medical Device Report M218408, received 12/10/90, Shiley, Inc.
16.) Medical Device Report M218946, received 12/17/90, Shiley, Inc.
17.) Medical Device Report M162834, received 1/5/89, Shiley, Inc.
18.) Medical Device Report M162828, M162829, M162830, M162831, M162832, M162833, M162836, M162838, M162839, M162840, M162841, M164234, M164858, M164860, M164850, M164934, M169675, various dates, Shiley, Inc.
19.) Medical Device Report M151200, received 2/26/88, Shiley, Inc.
20.) Medical Device Report M113582, received 11/5/92, Shiley, Inc.
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# Bibliography (continued)
21.) **Medical Device Report** M149951, M154495, M158908, M162835, M162837, M166744, M169035, M181659, M183581, M183582, M201061, M203578, M204035, M204038, M204528, M206003, M206119, M206314, M206208, M209511, M214496, M218406, M218555, M218949, M218952, M218954, M220245, M220248, M220824, M221189, M221190, M222866, M225528, M225533, M232442, M231336, M231337, M231338, M235611, M235947, M238231, M248275, M243327, M244887, M245205, M245936, M245940, M247740, M247741, M249816, M249823, M252531, M262466, M268638, M269022, M269713, M272031, various dates, Shiley, Inc.
22.) **Medical Device Report** M364517, M311533, M310489, M308281, M306710, M306708, M306205, M283826, M282507, M273690, various dates, Sorin Biomedical, Inc.
23.) **Medical Device Report** M345060, M317126, various dates, Sorin Biomedical, Inc.
24.) **Medical Device Report** M344176, received 9/2/92, Sorin Biomedical, Inc.
25.) **Medical Device Report** M324153, received 9/30/92, Sorin Biomedical, Inc.
26.) **Medical Device Report** M321079, received 8/13/92, Sorin Biomedical, Inc.
27.) **Medical Device Report** M285491, received 4/29/92, Sorin Biomedical, Inc.
28.) **Medical Device Report** M283413, received 4/15/92, Sorin Biomedical, Inc.
Printed name of person required to submit 510(k): Cheryl Rosenberg
Signature of person required to submit 510(k): Cheryl Rosenberg
Title of person submitting 510(k): Advanced Regulatory Affairs Coordinator
Name of Company: 3M Health Care
Date: August 9, 1995
3M Confidential
Page 8 of 541
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.