K011586 · Diametrics Medical, Inc. · GAA · Nov 16, 2001 · General, Plastic Surgery
Device Facts
Record ID
K011586
Device Name
IRMA SL BLOOD ANALYSIS SYSTEM GL CARTRIDGE
Applicant
Diametrics Medical, Inc.
Product Code
GAA · General, Plastic Surgery
Decision Date
Nov 16, 2001
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 878.4800
Device Class
Class 1
Attributes
Pediatric
Indications for Use
The GL Cartridge is intended for professional use with the IRMA® Blood Analysis System for the direct measurement of sodium, potassium, chloride, and glucose in human whole blood. The GL Cartridge and the IRMA® Blood Analysis System are for in vitro diagnostic use.
Device Story
The IRMA SL Blood Analysis System GL Cartridge is a single-use, disposable cartridge for in vitro diagnostic measurement of sodium, potassium, chloride, and glucose in human whole blood. Samples are introduced via syringe or capillary injection using the IRMA Capillary Collection Device. The glucose sensor utilizes an amperometric electrode and a reference electrode to measure the glucose oxidase reaction. The system performs automatic calibration prior to each test using factory-derived parameters and on-board calibrants. The analyzer processes sensor signals, performs error checking, and displays measured and calculated results, with an optional hard-copy printout. Used in clinical settings by healthcare professionals, the device provides rapid blood analysis to aid in the diagnosis and management of metabolic and electrolyte disorders, potentially improving patient outcomes through timely clinical decision-making.
Clinical Evidence
Bench testing only. Accuracy study (n=37) across 19-338 mg/dL range showed a slope of 0.97, intercept of 5.47, and r=0.992. Precision testing (n=58-60 per level) across four levels (47.7-351.3 mg/dL) demonstrated total precision %CV between 4.0% and 5.9%. Linearity was confirmed over the 20-500 mg/dL range.
Technological Characteristics
Disposable single-use cartridge; amperometric glucose oxidase sensor; 7.2V NiCAD rechargeable battery or AC adapter; dimensions/weight: 5 lbs; operating range 15-30°C, 0-80% humidity; automatic calibration with each sample; results via on-board display and printer.
Indications for Use
Indicated for professional use to measure electrolytes (Na+, K+, Cl-) to assess hydrational status, acid-base balance, and cardiac arrhythmia risk in patients with acid-base disturbances, dehydration, diarrhea, ketoacidosis, alcoholism, or other toxicities. Glucose measurement is indicated for the diagnosis and treatment of diabetes mellitus, neonatal hypoglycemia, and idiopathic hypoglycemia.
Regulatory Classification
Identification
A manual surgical instrument for general use is a nonpowered, hand-held, or hand manipulated device, either reusable or disposable, intended to be used in various general surgical procedures. The device includes the applicator, clip applier, biopsy brush, manual dermabrasion brush, scrub brush, cannula, ligature carrier, chisel, clamp, contractor, curette, cutter, dissector, elevator, skin graft expander, file, forceps, gouge, instrument guide, needle guide, hammer, hemostat, amputation hook, ligature passing and knot-tying instrument, knife, mallet, disposable or reusable aspiration and injection needle, disposable or reusable suturing needle, osteotome, pliers, rasp, retainer, retractor, saw, scalpel blade, scalpel handle, one-piece scalpel, snare, spatula, stapler, disposable or reusable stripper, stylet, suturing apparatus for the stomach and intestine, measuring tape, and calipers. A surgical instrument that has specialized uses in a specific medical specialty is classified in separate regulations in parts 868 through 892 of this chapter.
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Image /page/0/Picture/0 description: The image shows the logo for Diametrics Medical. The logo consists of a stylized letter "D" on the left and the words "DIAMETRICS MEDICAL" on the right. The letter "D" is black and white and has a small circle at the top and three vertical lines at the bottom. The words "DIAMETRICS MEDICAL" are in black, bold, sans-serif font.
NOV 1 5 2001
Fax: 651/639.8549 Phone: 651/639.8035 55113-1136 USA Saint Paul MN 2658 Patton Road
#### 510(k) Summary
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA1990 and 21 CFR 807.92.
The assigned 510(k) number is: _______________________________________________________________________________________________________________________________________________
Submitter:
Diametrics Medical, Inc. 2658 Patton Rd Roseville, MN 55113 Phone: (651) 638-1250 Fax: (651) 638-1060 Contact Person: Nancy Ring
IRMA® SL Blood Analysis System GL Cartridge
Establishment Registration Number:
Summary Prepared on:
May 21, 2001
GL Cartridge
Glucose
Class II
CGA
Glucose Test System
YSI Model 2300 Stat Plus.
21 CFR 862.1345
Chemistry (75)
2183953
Identification of Device: Device Name: Proprietary Name: Common Name:
- Classification Name: Device Classification: Regulation Number: Panel: Product Code:
Name of Predicate Device:
Predicate Device 510(k) Number:
K891480
Predicate Device Product Code:
75 CGA
### Substantial Equivalence Claim
The IRMA® SL Blood Analysis System GL Cartridge is substantially equivalent in method, intended use and clinical performance to the currently marketed YSI Model 2300 Stat Plus.
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### Device Description
Device Descripuon
The IRMA® SL Blood Analysis System GL Cartridge is for use with the IRMA Blood Analysis System. The GL cartidge is a single use, disposable carridge, for the in vitro measurement of any of the may on the may GL cartidge comprises the analytes sodium, potassium (K945240), chloride (K981270) and glucose. Oiz currently markets cartridges with sodium, potassium, (K945240) and chloride.
Samples are introduced via syringe or capillary injections with the IRMA® Capillary Collection Device. The glucose sensor uses an amperometric electrode along with a reference electrode that measures the glucose oxidase reaction. The IRMA® sensors are calibrated prior to each test using a calibrant packaged with the sensors. Calibration of the cartridge is completed when information a canorally partil the factory for each lot of cartridges is combined with measurements taken during the calibration process. Factory derived calibration parameters are input into the analyzer by calibration code entry.
Throughout the calibration and analysis process, signals from the sensors are analyzed. If any abnormal conditions are detected, an error message is generated and the test will be terminated. If abliotinal continuent a conditions, then the sample results (measured and calculated) are displayed after successful calibration and analysis. In addition, the user has the option to print a hard copy of the results.
#### Intended Use
The GL Cartridge is intended for professional use with the IRMA® Blood Analysis System for the direct The OD Currities is intended to pression, and chloride in human whole blood. The GL Cartridge and the IRMA® Blood Analysis System are for in vitro diagnostic use.
### Indications for Use
The electrolyte measurements (Nat, K*, Cl ) are used to assess hydrational status, aid in the diagnosis of The oreatory and metabolic acid-balance, and prevention of cardiac arrhythmia. Common disease states, which use these measurements for diagnosis, are acid-base disturbances, dehydration, diarrhea, ketoacidosis, alcoholism and other toxicities.
The measurement of glucose aids in the diagnosis and treatment of diabetes mellitus, neonatal hypoglycemia and idiopathic hypoglycemia.
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Summary of Technological Characteristics
The following table shows comparison to the predicate device.
| | IRMA® | YSI Model 2300 Stat Plus |
|--------------------|----------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Detection Method | Glucose Oxidase | Glucose Oxidase |
| Analytes measured | Na+, K+,Cl-, and glucose | Glucose, Lactate |
| Measuring Range | Glucose: 20 - 500 mg/dL | Glucose: 0-500 mg/dL in<br>Normal mode |
| | | 0-900 mg/dL in<br>Screening Mode |
| Operating Temp. | 15-30°C (59-86°F) | 15.0-35°C (59-95°F) |
| Operating Humidity | 0-80% | 10-90%* |
| | | *Non-condensing |
| Sample | Whole blood | Glucose: Whole Blood, serum, or<br>plasma |
| | 0.2 - 3.0 mL, from syringe<br>0.125 mL from capillary<br>collection device | 25 µL aspirated volume |
| | | |
| | | |
| Power | 7.2 V NiCAD rechargeable<br>battery or AC adapter | 120 VAC<br>240 VAC |
| Reagents | Supplied in self-contained<br>disposable cartridge | Supplied in a Buffer Concentrate<br>(YSI 2357) that is added to water<br>and a liquid Calibrator solution<br>(YSI 2747) |
| Weight | 5 lbs. | 25 lbs. |
| Results | Display and printer on<br>board | Display and printer on board |
| Calibration | Automatic with each<br>sample | Self calibrates every 5 samples or<br>15 minutes, or after a calibration<br>shift of 2% or greater, or after a<br>sample chamber temperature drift<br>of more than 1° C. |
| Sensors | Disposable single-use | Reusable sensor probes |
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# Summary of Performance Data:
# Accuracy:
| Analyte | n | Range evaluated | Slope | Intercept | r | Sy.x |
|---------|----|-----------------|-------|-----------|-------|-------|
| Glucose | 37 | 19 - 338 mg/dl | 0.97 | 5.47 | 0.992 | 11.08 |
# Precision
| Level | N | IRMA Glucose Mean (mg/dl) | IRMA Glucose Total Precision sd | IRMA Glucose Total Precision %CV |
|-------|----|---------------------------|---------------------------------|----------------------------------|
| 1 | 59 | 47.7 | 2.9 | 5.9 |
| 2 | 58 | 103.0 | 4.6 | 4.5 |
| 3 | 60 | 198.5 | 7.8 | 4.0 |
| 4 | 59 | 351.3 | 16.8 | 4.8 |
# Linearity:
| Analyte | n | Measured Range | Assessment |
|---------|----|----------------|------------|
| Glucose | 20 | 20-500 mg/dl | Linear |
# Conclusions:
Conclusions:
The data demonstrates that the GL Cartridge is as safe, effective and performs as well as the legally marketed predicate device to which equivalence is claimed.
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Image /page/4/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 or a representation of the human form.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
# NOV 1 6 2001
Ms. Nancy Ring Regulatory Affairs and Clinical Support Specialist Diametrics Medical, Inc. 2658 Patton Road Roseville, MN 55113
Re: K011586
Trade/Device Name: IRMA® SL Blood Analysis System GL Cartridge Regulation Number: 21 CFR 862.1345, 862.1170, 862.1600, 862.1665 Regulation Name: Glucose Test System, Chloride Test System, Potassium Test System, Sodium Test System
Regulatory Class: II Product Code: CGA, CGZ, CEM, JGS Dated: August 23, 2001 Received: August 24, 2001
Dear Ms. Ring:
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 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 Regulations, Title 21, Parts 800 to 895. allouing your as a suivalent determination assumes compliance with the Good Manufacturing Practice for Medical Devices: General (GMP) regulation (21 CFR Part 820) and that, through periodic GMP inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory 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 -
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 nouthoution. The I Drivin 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 1 II you desire spoolite an in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, (201) 59 + 10 the office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small monthanon on your respond and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Steven Sutman
Steven I. Gutman, M.D., M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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NOV 1 6 2001
# Statement of Indications For Use
Intended Use
intended Ose
The glucose sensor is intended for professional use with the IRMA® Blood Analysis System for the direct The guccose school is michood to precessional so was as a man as a may Blood Analysis System are for in vitro diagnostic use.
Indications for Use
The measurement of glucose aids in the diagnosis and treatment of diabetes mellitus, neonatal hypoglycemia and idiopathic hypoglycemia.
Alan Coopp
ision of Clinical Laboratory Devices 510(k) Number.
(Please DO NOT WRITE BELOW THIS LINE- CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use _
OR
Over-The-Counter Use _________________________________________________________________________________________________________________________________________________________
(Per 21 CFR 801.109)
(Optional Format 1-2-96)
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.