PHILIPS M2424 DIAGNOSTIC ULTRASOUND SYSTEM &PHILIPS 21315 DIAGNOSTIC ULTRASOUND TRANSDUCER
Applicant
Philips Ultrasound, Inc.
Product Code
IYN · Radiology
Decision Date
Jul 30, 2002
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1550
Device Class
Class 2
Attributes
Pediatric, 3rd-Party Reviewed
Indications for Use
Diagnostic ultrasound imaging or fluid flow analysis of the human body.
Device Story
M2424 Diagnostic Ultrasound System with 21315 phased array transducer; system console generates electronic voltage pulses transmitted to transducer; piezoelectric array converts pulses to ultrasonic pressure waves; waves reflect off body tissues; transducer converts reflected energy back to electrical signals; system processes signals into images; Doppler functions detect and display flow of moving targets (e.g., blood). Used in clinical settings by healthcare professionals for diagnostic imaging and fluid flow analysis. Provides real-time 2D, 3D, and bi-plane imaging, Doppler, and harmonic imaging to assist clinical decision-making and patient diagnosis.
Clinical Evidence
No clinical data provided. Substantial equivalence is based on bench testing, including acoustic output measurements and comparison of technological characteristics to predicate devices.
Technological Characteristics
System console with power supply and electronic circuitry; phased array transducer (21315) using piezoelectric elements. Supports B-mode, M-mode, PWD, CWD, Color Doppler, and combined modes. Includes harmonic imaging (tissue/contrast), Angio, real-time 3D, and real-time bi-plane imaging. Operates under standard electrical/physical safety requirements.
Indications for Use
Indicated for diagnostic ultrasound imaging and fluid flow analysis in fetal, abdominal, intra-operative, pediatric, small organ, neonatal/adult cephalic, trans-rectal, trans-vaginal, trans-esophageal, and cardiac applications, as well as peripheral vessel assessment. Contraindications not specified.
Regulatory Classification
Identification
An ultrasonic pulsed doppler imaging system is a device that combines the features of continuous wave doppler-effect technology with pulsed-echo effect technology and is intended to determine stationary body tissue characteristics, such as depth or location of tissue interfaces or dynamic tissue characteristics such as velocity of blood or tissue motion. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
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K022303
JUL 3 0 2002
### 3 Summary of Safety and Effectiveness
This summary of 510(k) safety and effectiveness information is submitted in accordance with the requirements of the Safe Medical Devices Act of 1990 as implemented in 21 C.F.R. §807.92.
The submitter of this premarket notification is:
Paul Smolenski Regulatory Engineer Philips Ultrasound 3000 Minuteman Road, MS 0135 Andover, MA 01810 Tel: (978) 659-3380 Fax: (978) 975-7324
This summary was prepared on June 21st, 2002
The proprietary name of the device is the M2424 Diagnostic Ultrasound System with the 21315 ultrasound transducer. These devices are commonly known as a diagnostic ultrasound system and transducer.
These devices are classified as follows:
| 90IYN | Ultrasonic Pulsed Doppler Imaging System |
|-------|------------------------------------------|
| 90IYO | Ultrasonic Pulsed Echo Imaging System |
| 90ITX | Diagnostic Ultrasound Transducer |
As stated in 21 CFR, parts 892.1550, 892.1560 and 892.1570, each of these generic types of devices have been classified as Class II.
The M2424 is a diagnostic ultrasound device. It consists of a system console containing the power supply and electronic circuitry required to generate the image, a display screen, and a connection to the separate transducer. It is substantially equivalent to the generic class of ultrasound systems including previous versions of the Philips Medical Systems M2424 (K002470) system and the Voluson 730 (K003525).
The 21315 transducer is substantially equivalent to the generic class of ultrasound transducers including previously cleared Philips Medical Systems transducers (K002470).
The M2424 system and 21315 transducer function in a manner identical to all ultrasound systems and transducers. The system circuitry generates an electronic voltage pulse which is transmitted to the transducer. In the transducer, a piezo electric array converts the electronic pulse into a ultrasonic pressure wave. When coupled to the body, the
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pressure wave transmits through body tissues. The differing acoustic properties of the tissues in the body reflect some of the transmitted energy back to the transducer, where it is converted back to electrical signals, processed, and sent back to the system. In the system, advanced signal processing technologies further convert the returned signals into images of the tissues. The Doppler functions of this system process the Doppler shift frequencies from the echoes of moving targets (such as blood), to detect and graphically display the Doppler shifts of these tissues as flow.
The M2424 system with the 21315 transducer is intended for diagnostic ultrasound imaging and fluid flow analysis.
The M2424 system with the 21315 transducer is substantially equivalent in safety and effectiveness to the predicates identified above:
- Both the predicate device and the M2424 are indicated for the diagnostic ultrasonic . imaging and fluid flow analysis.
- Both the predicate device and the M2424 have the same gray-scale and Doppler . capabilities.
- Both the predicate device and the M2424 use essentially the same technologies for . imaging, Doppler functions and signal processing.
- Both the predicate device and the M2424 have acoustic output levels below the . applicable FDA limits.
- Both the predicate device and the M2424 are manufactured under equivalent quality . systems.
- Both the predicate device and the M2424 are manufactured of materials with . equivalent biosafety. The materials have been evaluated and found to be safe for this application.
- Both the predicate device and M2424 are designed and manufactured to the same . electrical and physical safety standards.
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Image /page/2/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" arranged around the perimeter. Inside the circle is an abstract symbol resembling an eagle or bird in flight, composed of three curved lines.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JUL 3 0 2002
Philips Ultrasound, Inc. c/o Mr. Mark Job Responsible Third Party Official TUV Product Service 1775 Old Highway 8 NW, Suite 104 NEW BRIGHTON MN 55112-1891
Re: K022303
Trade Name: Philips Ultrasound M2424 Diagnostic Ultrasound System Regulation Number: 21 CFR 892.1550 Regulation Name: Ultrasonic pulsed doppler imaging system Regulation Number: 21 CFR 892.1560 Regulation Name: Ultrasonic pulsed echo imaging system Regulation Number: 21 CFR 892.1570 Regulation Name: Diagnostic ultrasound transducer Regulatory Class: II Product Code: 90 IYN, 90 IYO and 90 ITX Dated: July 15, 2002 Received: July 16, 2002
## Dear Mr. Job:
We have reviewed your Section 510(k) premarket 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 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). 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.
This determination of substantial equivalence applies to the following transducers intended for use with the Philips Ultrasound M2424 Diagnostic Ultrasound System, as described in your premarket notification:
Transducer Model Number
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Page 2- Mr. Mark Job
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), 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 898. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please be advised that FDA's 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); 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.
This determination of substantial equivalence is granted on the condition that prior to shipping the first device, you submit a postclearance special report. This report should contain complete information, including acoustic output measurements based on production line devices, requested in Appendix G, (enclosed) of the Center's September 30, 1997 "Information for Manufacturers Seeking Marketing Clearance of Diagnostic Ultrasound Systems and Transducers." If the special report is incomplete or contains unacceptable values (e.g., acoustic output greater than approved levels), then the 510(k) clearance may not apply to the production units which as a result may be considered adulterated or misbranded.
The special report should reference the manufacturer's 510(k) number. It should be clearly and prominently marked "ADD-TO-FILE" and should be submitted in duplicate to:
> Food and Drug Administration Center for Devices and Radiological Health Document Mail Center (HFZ-401) 9200 Corporate Boulevard Rockville, Maryland 20850
This letter will allow you to begin marketing your device as described in your 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 market.
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Page 3 - Mr. Mark Job
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801, please contact the Office of Compliance at (301) 594-4591. 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 Part 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers, International and Consumer Assistance at its toll-free number (800) 638-2041 or at (301) 443-6597 or at its Internet address "http://www.fda.gov/cdrh/dsmamain.html".
If you have any questions regarding the content of this letter, please contact Rodrigo C. Perez at (301) 594-1212.
Sincerely yours,
David A. Lynn
for
Nancy C. Brogdon Director, Division of Reproductive, Abdominal and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure(s)
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#### Indications for Use Summary 4.3.2
# DIAGNOSTIC ULTRASOUND INDICATIONS FOR USE FORM
#### Philips Ultrasound M2424 Diagnostic Ultrasound System System:
Intended Use: Diagnostic ultrasound imaging or fluid flow analysis of the human follows:
| Clinical Application | | Mode of Operation | | | | | | |
|---------------------------|------------------------------|-------------------|---|-----|-----|------------------|----------|---------|
| General<br>(Track I Only) | Specific<br>(Tracks I & III) | B | M | PWD | CWD | Color<br>Doppler | Combined | Others |
| Ophthalmic | Ophthalmic | P | | P | | P | | |
| | Fetal | P | P | P | P | P | P | 2,3,4 |
| | Abdominal | P | P | P | P | P | P | 2,3,4 |
| | Intra-operative (Specify)6 | P | P | P | P | P | P | 2,3,4 |
| | Intra-operative (Neuro) | | | | | | | |
| | Laparoscopic | | | | | | | |
| Fetal Imaging<br>& Other | Pediatric | P | P | P | P | P | P | 2,3,4,5 |
| | Small Organ (Specify)7 | P | P | P | P | P | P | 2,3 |
| | Neonatal Cephalic | P | P | P | P | P | P | 2,3 |
| | Adult Cephalic | P | P | P | P | P | P | 2,3 |
| | Trans-rectal | P | P | | | P | P | |
| | Trans-vaginal | P | P | | | P | P | |
| | Trans-urethral | | | | | | | |
| | Trans-esoph. (non-Card.) | P | P | P | P | P | P | 2,3 |
| | Intra-luminal | | | | | | | |
| | Other (Specify) | | | | | | | |
| | Cardiac Adult | P | P | P | P | P | P | 2,3,4,5 |
| Cardiac | Cardiac Pediatric | P | P | P | P | P | P | 2,3,4,5 |
| | Trans-esoph. (Cardiac) | P | P | P | P | P | P | 2,3 |
| | Other (Specify) | | | | | | | |
| Peripheral<br>Vessel | Peripheral vessel | P | P | P | P | P | P | 2,3,4,5 |
| | Other (Specify) | | | | | | | |
| | Musculo-skel (conventional) | | | | | | | |
| | Musculo-skel (superficial) | | | | | | | |
N= new indication; P= previously cleared by FDA; E= added under Appendix E
Notes:
1. Combined modes are: B+M, B+M+Color, B+PW, B+PW(CVI), B+PW+Color
2. Harmonics (Tissue and Contrast) - Previously Cleared
3. Angio - Previously Cleared
4. Real-time 3D imaging- New
- 5. Real-time Bi-plane imaging- New
- 6. Intraoperative applications include: Cardiac, Vascular Previously Cleared
7. Small Parts applications include: Thyroid, scrotum, prostate, breast - Previously Cleared
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of Center for Devices and Radiological Health, Office of Device Evaluation
Prescription Use (Per 21 CFR 801.109)
David he. hygm
(Division Sign-Off)
Cly HD
(Division Sign-On)
Division of Reproductive, Abdominal,
and Radiological Devices
510(k) Number K022303
Page 17
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# DIAGNOSTIC ULTRASOUND INDICATIONS FOR USE FORM
### Philips Ultrasound M2424 Diagnostic Ultrasound System System: Transducer: 21315 Phased array transducer
Intended Use: Diagnostic ultrasound imaging and fluid flow analysis of the human body as follows:
| Clinical Application | | Mode of Operation | | | | | | |
|---------------------------|------------------------------|-------------------|---|-----|-----|------------------|-----------------------|--------------------|
| General<br>(Track I Only) | Specific<br>(Tracks I & III) | B | M | PWD | CWD | Color<br>Doppler | Combined<br>(Specify) | Other<br>(Specify) |
| Ophthalmic | Ophthalmic | | | | | | | |
| Fetal Imaging<br>& Other | Fetal | N | N | N | N | N | N | 2,3,4,5 |
| | Abdominal | N | N | N | N | N | N | 2,3,4,5 |
| | Intra-operative (Specify)1 | N | N | N | N | N | N | 2,3,4,5 |
| | Intra-operative (Neuro) | | | | | | | |
| | Laparoscopic | | | | | | | |
| | Pediatric | N | N | N | N | N | N | 2,3,4,5 |
| | Small Organ (Specify) | | | | | | | |
| | Neonatal Cephalic | | | | | | | |
| | Adult Cephalic | | | | | | | |
| | Trans-rectal | | | | | | | |
| | Trans-vaginal | | | | | | | |
| | Trans-urethral | | | | | | | |
| | Trans-esoph. (non-Card.) | | | | | | | |
| | Intra-luminal | | | | | | | |
| | Other (Specify) | | | | | | | |
| Cardiac | Cardiac Adult | N | N | N | N | N | N | 2,3,4,5 |
| | Cardiac Pediatric | N | N | N | N | N | N | 2,3,4,5 |
| | Trans-esoph. (Cardiac) | | | | | | | |
| | Other (Specify) | | | | | | | |
| Peripheral<br>Vessel | Peripheral vessel | | | | | | | |
| | Other (Specify) | | | | | | | |
| | Musculo-skel (conventional) | | | | | | | |
| | Musculo-skel (superficial) | | | | | | | |
N= new indication; P= previously cleared by FDA; E= added under Appendix E
*Examples may include: A-mode, Amplitude Doppler, 3-D Imaging, Harmonic Imaging, Tissue Motion Doppler, Color Velocity Imaging
Additional Comments: Other Modes include Amplitude Doppler.
Note 1: Intraoperative uses include abdominal and cardiac (including vessels) applications.
- Note 2: Other conventional modes includes Angio
Note 3: Real-time 3D imaging - New
Note 4: Real-time Bi-plane imaging - New
Note 5: Harmonics (Tissue and Contrast)
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of Center for Devices and Radiological Health, Office of Device Evaluation
Prescription Use (Per 21 CFR 801.109)
David h. Eymm
---
"Division Sign Off
(Division Sign-Of Division of Reproductive. Al and Radiological Device 510(k) Number
Page 18
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.