The Spirovit SP-250 can be used to measure Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), FEV 10/ FVC, FEF 0.2.1.2, FEF 25.75%, FEF 75.85% , PEF 50%, FEF 50%, FEF 75%, FIVC, FIV 10, FIV 10 / FIVC, PIF, FIF 50%, SVC, ERV, IRV, TV, MVV, RR, TV, in patients 6 years of age or older
Device Story
Spirovit SP-250 is a diagnostic spirometer used to measure pulmonary function parameters; inputs include patient respiratory airflow; device transforms airflow data into clinical measurements (FVC, FEV1, MVV, etc.); output is a set of respiratory metrics for clinician review; used in clinical settings by healthcare professionals; aids in assessment of patient lung function; benefits include objective quantification of respiratory status.
Clinical Evidence
No clinical data. Bench testing only; device performance verified against ATS Spirometry Statement (1994) and electrical/EMC safety standards (IEC 601-1-1, IEC 601-1-2).
Technological Characteristics
Diagnostic spirometer with disposable flow sensor; RS-232 interface for data communication; dimensions: 7.5 cm flow sensor, 10 cm handle; weight 180g. Complies with IEC 601-1-1 (safety), IEC 601-1-2 (EMC), and IEC 601-1-4 (software quality).
Indications for Use
Indicated for pulmonary function testing in patients 6 years of age or older to measure respiratory parameters including FVC, FEV1, and various flow/volume indices.
Regulatory Classification
Identification
A diagnostic spirometer is a device used in pulmonary function testing to measure the volume of gas moving in or out of a patient's lungs.
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4/30/99
FDA 510K SP-250
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# 510 K Summary
according to 21 CFR 807.92
#### A1 Address
SCHILLER AG Altgasse 68 CH-6341 Baar Switzerland
Contact Name: Tel: Date:
Mr. Markus Buetler 001 41 41 766 4252 28. April 1999
## A2 Device Name
1. Trade Name: SPIROVIT SP-250 2. Common Name: Spirometer, Pulmonary Function Test Device
### A3 Legally Marketed Device
Legally Marketed Device to which this submitted device is compared: SP-100 (K896120).
#### A4 Intended Use
The Spirovit SP-250 can be used to measure Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), FEV 10/ FVC, FEF 0.2.1.2, FEF 25.75%, FEF 75.85% , PEF 50%, FEF 50%, FEF 75%, FIVC, FIV 10, FIV 10 / FIVC, PIF, FIF 50%, SVC, ERV, IRV, TV, MVV, RR, TV, in patients 6 years of age or older
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# Table of Comparison A5
Predicate device:
SPIROVIT SP-100 (K896120)
| | SP-100 (K896120) | SP-250 |
|-------------------------------------------------------------|------------------------------------------------------------------------------|----------------------|
| Dimensions: | | |
| Flow Sensor | 15.5 cm | (1) 7.5 cm |
| Handle | 9 cm | (1) 10 cm |
| Sensor | fixed | (1) disposable |
| Weight: | 340 g | (2) 180 g |
| Environmental Conditions: | | |
| Operating temperature | +10° - 40° C | same |
| Storage temperature | -10° - +50° C | same |
| Relative humidity | 25% - 95%<br>(non condensing) | same |
| Electrostatic Discharge /<br>Electromagnetic Compatibility: | | |
| ESD | Fully functional below 4 kV<br>(Open Air)<br>No damage below 8 kV (Open Air) | same |
| Radiated Emissions | Less than 30 dB Microvolts | same |
| Radiated Immunity | Less than 3 Volts per meter | same |
| Data Communication | 12 bit serial | (3) RS-232 interface |
Discusson of Differences:
Discussion of Directores (1, 2 or 3) can be considered as safety relevant differences. Norte of the above diferences (1, 2 or 0) our bo considered as the Predicate (SP-100) device.
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FDA 510K SP-250
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## Non-Clinical Tests B1
- 1. Electrical Safety and Reliability
The SP-250 device has been tested to be in accordance with the following standards:
- ATS Spirometry Statement Medical Section of the American Lung Association November - 11th 1994
- IEC 601-1-1 (Safety) i
- IEC 601-1-2 (EMC) ﻴﺔ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟﻤﺘﺤﺪﺓ ﺍﻟ
- IEC 601-1-4 (Software Quality) -
All tests are passed.
- 4) Data related to software quality
SCHILLER has reviewed its software development process following the guideline " reviewer guidance for computer controlled medical devices undergoing 510 (k) review". Device software requirements, software structure chart, software development, software revision/ ooktion, software identification, software verification, validation and testing are described in the data attached.
- B2 Clinical Tests
n.a.
# Conclusions from Tests B3
The fulfilment of the above standards ensures the safety and effectiveness of the submitted device. We The familinent of the above octinaties as as and effective as the Predicate (SP-100) Device.
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Public Health Service
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Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
# APR 3 0 1999
Mr. Markus Buetler SCHILLER AG Altgasse 68 CH-6341 Baar Switzerland
K984031 Re: SPIROVIT SP-250 SFIROVII Class: II (two) Regulator]
Product Code: 73 BZG February 26, 1999 Dated: Dated:
Dear Mr. Buetler:
Dear Mr. Buelter. we have reviewed your Section 510 (k) notification of the ender is and we device referenced above and we have detections for use stated as the
substantially equivalent (for the indications for use stated into of the enclosure) to legally marketed predicate devices marketed in
enclosure) to legally marketed predicate devices marketed data enclosure) to Legally marketed predicate devices macket of the interstate commerce prior to May 28, 1976, the enacement accomments and Medical Device Amendients, or to devices that have been and in accordance with the provisions of the redetar room beys, subject to
cosmetic Act (Act). You may, the Act. The general controls Cosmetic Act (Act). You may, the Act. The general controls
the general controls provisions of the Act. The general controls the general controls provisions of the Act. "The general registration,
the general of the Act include requirements for annual registration, erovisions of the Act include requirements for annually of the labeling, and ling, and ling, and list in the listing of devices, good manniatitiring pro-
ff your devile is classified (see above) into either class II (Special If your device is class III (Premarket Approval), it may be subject to such IT your be additional controls. Existing major regulations, Title 21, Parts 800
can be found in the Code of Federal Regulations, Title 21, Parts 800 can be found in the Code of Federal Regulation assumes compliance
to 895. A substantially equivalent delermination assumes as set to 895. A substantially equivalent determinates as set
with the Current Good Manufacturing Practice requirements, as set with the Current Good Manufacturing Fractics Logical Devices:
forth in the Quality System Regulation (QS) for Medical Devices:
Christian (2) CER Rart 800) and that, through p forth in the Quality System Regulation (QS) 108 Novemberiodic QS
General regulation (21 CFR Part 820) and that, through perify succify su General regulation (2) CFR Part 820) and chat, enroadyo (
inspections, the Food and Drug Admistiration (FDA) will werking in inspections. Failure to comply with the GMP regulation may result in
assumptions. Failure to comply with the GMP regulation may no assumptions. Failure to comply with the can isonester announcements
regulatory action. In the Federal Register. Plaase note: this regulatory action. In addition, Primalias paster. Please note:
concerning your device in the retification submission does not af concerning your device in the redocal Registion does not affect any
response to your premarket notification 532 of the Act response to your premirket holifications 531 through 542 of the Act
obligation you might Flootronic Radiation Control provision obligation you might have under sections 351 cm one of 1999
for devices under the Electronic Product Radiation Control provisions,
the devices under as magulations for devices and laws or regulations.
{4}------------------------------------------------
Page 2 - Mr. Markus Buetler
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 prodicate 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/doma/domamain.html".
Sincerely yours,
Thomas J. Allelson
Thomas J. Čallahan, Ph.D. Director Division of Cardiovascular, Respiratory, and Neurological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Page 1 of 1
510(k) Number: K984031
Device Name: SCHILLER AG, Spirovit-250 Diagnostic Spirometer
Indications For Use:
The Spirovit SP-250 can be used to measure Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), FEV, JFVC, FEF 25-12, FEF 25-75%, FEF 75-85% PEF, FEF259, FEF50%, FEF75%, FIVC, FIV, JFIVC, PIF, FIF_0%, SVC, ERV, IRV, TV, MVV, MV, RR and TV, in patients 6 years of age or older.
# (PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use_X (Per 21 CFR 801.109) OR
Over-The-Counter Use_
(Optional Format 1-2-96)
Arthur A. Richards, L.
(Division Sign-Off) Division of Cardiovascular, Respiratory, and Neurological Devices
510(k) Number _
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Learn the FDA Browser
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.