K972962 · 3M Company · DRY · Nov 6, 1997 · Cardiovascular
Device Facts
Record ID
K972962
Device Name
3M CDI BLOOD PARAMETER MONITORING SYSTEM 500
Applicant
3M Company
Product Code
DRY · Cardiovascular
Decision Date
Nov 6, 1997
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 870.4330
Device Class
Class 2
Indications for Use
The 3M CDI System 500 provides continuous, on-line monitoring of the extracorporeal partial pressure of oxygen and carbon dioxide, pH, potassium, oxygen saturation, hematocrit, hemoglobin and temperature. In addition, calculated values of base excess, bicarbonate, oxygen saturation, and oxygen consumption may also be provided. These parameters are displayed at either actual temperature or adjusted to 37 ° C. For documentation purposes, the system 500's integral printer provides a hard copy of displayed parameters.
Device Story
System 500 is an AC-powered, microprocessor-based monitor for extracorporeal blood circuits. It utilizes disposable, heparin-coated flow-through sensors and cuvettes. Principle of operation: LEDs in cable heads/probes emit light to sensors containing fluorescent dyes; dye light emission intensity varies with concentration of O2, CO2, potassium, or hydrogen ions. For saturation/hematocrit/hemoglobin, reflected light from blood is measured. Microprocessor converts optical signals to numerical values (mmHg, kPa, mEq/L, pH, %, g/dL). Used in clinical settings (e.g., OR) by perfusionists or clinicians during cardiopulmonary bypass. Output displayed on monitor and printed for documentation. Provides real-time physiological data to assist clinicians in managing patient status during bypass procedures.
Clinical Evidence
Bench testing only. Performance characteristics were exhaustively tested and compared against 3M CDI System 400, 3M CDI System 100, and Mallinckrodt Gem 6 monitors. All performance characteristics were validated to meet specifications.
Technological Characteristics
Microprocessor-based monitor; AC-powered with battery backup. Uses disposable heparin-coated flow-through sensors and cuvettes. Sensing principle: fluorescence-based optical sensing for pH, pCO2, pO2, and potassium; reflectance-based optical sensing for saturation, hematocrit, and hemoglobin. Includes integral printer. Standalone device.
Indications for Use
Indicated for continuous, on-line monitoring of blood parameters (pH, pCO2, pO2, potassium, oxygen saturation, hematocrit, hemoglobin, temperature) in patients undergoing partial or complete cardiopulmonary bypass.
Regulatory Classification
Identification
A cardiopulmonary bypass on-line blood gas monitor is a device used in conjunction with a blood gas sensor to measure the level of gases in the blood.
Predicate Devices
System 400 CDI Extracorporeal Blood Gas Monitoring System (K890113)
System 100 CDI Hematocrit/Oxygen Saturation Monitoring System (K902654)
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K9729102
3M Health Care Cardiovascular Systems CDI™ Products
C: N
1311 Valencia Avenue Tustin, CA 92680 714 258 8001 714 258 1230 Fax
NOV - 6 1997
# 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
| Submitter's Name: | 3M Health Care |
|----------------------|---------------------------------------|
| Submitter's Address: | 1311 Valencia Avenue, Tustin CA 92780 |
| Contact Person: | Anne Buteyn |
| Phone Number: | (313)741-6338 |
| FAX Number: | (313)663-5062 |
| Summary Date: | August 8, 1997 |
Device Trade Name:
3M CDI Blood Parameter Monitoring System 500
#### Device Classification Name:
Cardiopulmonary bypass on-line blood gas monitor and cardiopulmonary bypass inline blood gas sensor (21 CFR 870.4330)
Predicate Devices:
| K890113 | System 400 CDI Extracorporeal Blood Gas Monitoring System |
|---------|---------------------------------------------------------------|
| K902654 | System 100 CDI Hematocrit/Oxygen Saturation Monitoring System |
| K854357 | Mallinckrodt Gem 6 Blood Gas/Electrolyte Monitor |
## Device Description:
The 3M CDI Blood Parameter Monitoring System 500 is an AC-powered (battery backup), microprocessor-based device used with disposable sensor elements for the purpose of monitoring arterial and/or venous pH, pCO2, pO2, potassium, saturation, hematocrit, and hemoglobin in the extracorporeal tubing circuit during partial or complete cardiopulmonary bypass.
The sensing element is introduced into the extracorporeal circuit by means of a heparin-coated sterile flow-through sensor for gas, potassium ion, and hydrogen ion measurement, and by means of a heparin-coated cuvette which allows measurement while maintaining a sterile path.
For pH, pCO2, pO2, and potassium measurement, a light is emitted from light emitting diodes (LED's) in the cable head to the sensors. Each sensor contains individual microsensors for the pH, pCO2, pO2, and potassium parameters. The microsensors contain fluorescent dyes which emit light in response to the stimulating light from the LED's. The intensity of the emitted light is dependent upon the concentration of O2 CO2 potassium ions or hydrogen ions coming in contact with the microsensors. The
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intensity of the emitted light is then converted to a numerical value in mmHg, kilopascals, mEq/l, or pH units and displayed on the face of the monitor. For saturation, hematocrit and hemoglobin measurement, a light is emitted from LEDs in the probe to the cuvette and reflected back into the probe depending on the saturation of the blood and the hemoglobin present. The reflected light is then converted to a numerical value in saturation percentage, hematocrit percentage, or g/dl.
## Indications for Use:
The 3M CDI Blood Parameter Monitoring System 500 is intended to provide continuous, on-line monitoring of the extracorporeal partial pressure of oxygen and carbon dioxide. pH. potassium. oxygen saturation, hematocrit, hemoglobin and temperature. In addition, calculated values of base excess, bicarbonate, oxygen saturation, and oxygen consumption may also be provided. These parameters are displayed at either actual temperature or adjusted to 37 °C.
## Technological Characteristics:
The 3M CDI System 500 is a combination of the technologies found in the 3M CDI System 400 and the 3M CDI System 100. The only differences between the 3M CDI Blood Parameter Monitoring System 500 and its predicate devices are:
- · the use of an in-line shunt sensor only, rather than an in-line cell/sensor combination;
- · the application of a covalently-bound heparin coating to the fluid path of the shunt sensor: and
- · the addition of a microsensor for the measurement of potassium.
# Nonclinical Performance:
The performance characteristics of the 3M CDI Blood Parameter Monitoring System 500 were exhaustively tested and compared with the performance characteristics of the currently marketed 3M CDI System 400 Blood Gas Monitoring System, the 3M CDI System 100 Hematocrit/Oxygen Saturation Monitoring System, and Mallinckrodt Gem 6 Blood Gas/Electrolyte Monitor. All new and existing performance characteristics of the 3M CDI Blood Parameter Monitoring System 500 have been validated.
# Conclusions from Nonclinical Tests:
The 3M CDI Blood Parameter Monitoring System 500 performs as intended according to its performance specifications. The 3M CDI Blood Parameter Monitoring System 500 is substantially equivalent to its predicate devices.
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#### 2.2 Safety Literature Search
Although a safety literature search is not required for class II devices, one has been included below.
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 with cardiopulmonary bypass on-line blood gas monitors and cardiopulmonary bypass in line blood gas sensors within the past five years. I further certify that I am aware of the types of problems to which cardiopulmonary bypass on-line blood gas monitors and cardiopulmonary bypass in line blood gas sensors are susceptible and that the following list of safety and/or effectiveness problems about these devices is complete and accurate:
- 1) Occlusion of a cell or cuvette
- Leakage of fluid from a cell or cuvette, or ingress of air emboli 2) into a cell or cuvette
- Loss of sterility 3)
ない
Below is a bibliography of the materials upon which the above summary is based:
- 1) Customer Complaint File, various dates, 3M CDI
- U.S. Food and Drug Administration Recall Number Z 1084/1085-1. 2) Initiated by 3M CDI on May 20, 1991.
- 3) U.S. Food and Drug Administration Recall Number Z 2628-2 through Z 2633-2. Initiated by 3M CDI on December 18, 1991
- 4) U.S. Food and Drug Administration Recall Numbers Z 635-2 through Z 645-2. Initiated by 3M CDI on February 2, 1991.
- ર) Medical Device Report M174488, filed 1/30/92 by 3M CDI.
- 6) Medical Device Report M174493, filed 2/4/92 by 3M CDI.
- 7) Medical Device Report M268836, filed 2/17/92 by 3M CDI.
- 8) Medical Device Report M268956, filed 2/19/92 by 3M CDI.
- 9) Medical Device Report M268957, filed 2/19/92 by 3M CDI.
- 10) Medical Device Report M255427, filed 2/13/92 by 3M CDI.
- l l ) Medical Device Report M255429, filed 2/13/97 by 3M CDI,
- 12) Medical Device Report M174556, filed 2/12/92 by 3M CDI.
- 13) Medical Device Report M174629, filed 2/2/92 by 3M CDI.
- 14) Medical Device Report M174966, filed 4/16/92 by 3M CDI.
- ાર) Medical Device Report M174942, filed 4/16/92 by 3M CDI.
- 16) Medical Device Report M174941, filed 4/16/92 by 3M CDI.
- 17) Medical Device Report M174943, filed 4/16/92 by 3M CDI.
- Medical Device Report M174964, filed 4/16/92 by 3M CDI. 18)
- I d) Medical Device Report M320347, filed 3/14/93 by 3M CDI.
- Medical Device Report M377386, filed 3/26/93 by 3M CDI. 20)
- 21) Medical Device Report M377387, filed 3/26/93 by 3M CDI.
- 22) Medical Device Report M377388, filed 3/26/93 by 3M CDI.
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- Medical Device Report M544290, filed 8/5/94 by 3M CDI. 23)
- 24) Medical Device Report M800711, filed 4/17/95 by 3M CDI.
- Medical Device Report M820946, filed 7/31/95 by 3M CDI. 25)
Printed name of person required to submit 510(k): ____________________________________________________________________________________________________________________________ Title of person submitting 510(k): Senior Professional Service Representative Name of Company: ___________________ 3M Health Care Date: ________________________________________________________________________________________________________________________________________________________________________ August 8, 1997
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Image /page/4/Picture/2 description: The image shows the seal of the Department of Health & Human Services (HHS) of the United States of America. The seal features a stylized eagle with its wings spread, symbolizing protection and service. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES USA" is arranged in a circular pattern around the eagle, indicating the department's name and national affiliation. The seal is presented in black and white, giving it a formal and official appearance.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
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Ms. Anne M. Buteyn Senior Professional Service Representative 3M Health Care Cardiovascular System Sarns and CDI Products 1311 Valencia Avenue Tustin, California 92780
NOV - 6 1997
Re: K972962 3M CDI Blood Parameter Monitoring System 500 Regulatory Class: II (Two) Product Code: DRY Dated: Auqust 8, 1997 Received: August 11, 1997
Dear Ms. Buteyn:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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). 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.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Requlations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General requlation (21 CFR Part 820) and that, through periodic QS inspections, the Food and Drug Administration (FDA) will verify such Failure to comply with the GMP regulation may result in assumptions. requlatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
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Page 2 - Ms. Anne M. Buteyn
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification 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 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4648. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html."
Sincerely yours,
Thomas J. Callahon
Thomas J. Callak Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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510(k) Number (if known): K972962
3M CDI Blood Parameter Monitoring System 500 Device Name:
Indications For Use:
870 · 4330 -
The 3M CDI System 500 provides continuous, on-line monitoring of the extracorporeal partial pressure of oxygen and carbon dioxide, pH, potassium, oxygen saturation, hematocrit, hemoglobin and temperature. In addition, calculated values of base excess, bicarbonate, oxygen saturation, and oxygen consumption may also be provided. These parameters are displayed at either actual temperature or adjusted to 37 ° C. For documentation purposes, the system 500's integral printer provides a hard copy of displayed parameters.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Bete A. Campbell
(Division Sign-Off) Division of Cardiovascular, Respiratory, and Neurological Devices
510(k) Number K972962
Prescription Use X (Per 21 CFR 801.109)
OR
Over-The-Counter Use
(Optional Format 1-2-96)
roomitor
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.