VOLUSION SMALL PARTS TRANSDUCER, MODEL S-VNW 5-10, VOLUSION ABDOMINAL TRANSDUCER, MODEL S-VAW 4-7
Applicant
Medison America, Inc.
Product Code
ITX · Radiology
Decision Date
Jul 8, 1999
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1570
Device Class
Class 2
Attributes
Pediatric, 3rd-Party Reviewed
Indications for Use
Transducer S-VNW 5-10: Pediatric, small organs (including thyroid, testicles, salivary gland, breast, and lymph nodes); peripheral vascular; and musculoskeletal-conventional. Transducer S-VAW 4-7: Fetal, abdominal, pediatrics, and small organs.
Device Story
Diagnostic ultrasound transducers (S-VNW 5-10 and S-VAW 4-7) for use with Combison 530D system. S-VNW 5-10: multielement, mechanically steered linear array (volume) probe; 7.5 MHz center frequency; 5-10 MHz range; 40 mm scan width; 75 mm depth. S-VAW 4-7: multielement curved array probe; 4.5 MHz center frequency; 4-7 MHz range; 70 mm width; 200 mm depth. Both support B-mode (including 3D volume imaging), M-mode, Pulsed Doppler, and Color Flow modes. Operated by clinicians in clinical settings to visualize internal structures and blood flow. Output displayed on system monitor for diagnostic assessment. Benefits include non-invasive imaging for specified anatomical regions.
Clinical Evidence
Bench testing only. Evaluated measurement accuracy, precision of volume reconstruction, electrical and thermal safety, and software performance. Acoustic output measured per FDA-recognized standards (Track 3).
Technological Characteristics
Multielement ultrasound transducers. S-VNW 5-10: mechanically steered linear array (volume), 192 elements. S-VAW 4-7: curved array. Operating modes: B-mode, 3D volume imaging, M-mode, Pulsed Doppler, Color Flow. Patient contact materials unchanged from predicate. Acoustic output compliant with Track 3 standards.
Indications for Use
Indicated for diagnostic ultrasound imaging or fluid flow analysis of the human body, including fetal, abdominal, pediatric, small organ (thyroid, testicles, salivary gland, breast, lymph nodes), peripheral vascular, and musculoskeletal-conventional applications.
Regulatory Classification
Identification
A diagnostic ultrasonic transducer is a device made of a piezoelectric material that converts electrical signals into acoustic signals and acoustic signals into electrical signals and intended for use in diagnostic ultrasonic medical devices. Accessories of this generic type of device may include transmission media for acoustically coupling the transducer to the body surface, such as acoustic gel, paste, or a flexible fluid container.
Predicate Devices
Kretztechnik Transducer Model S-NLM 5-10 (K992155)
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## 510(k) SUMMARY
K 992155
## MODEL S-VNW 5-10 VOLUSON® SMALL PARTS TRANSDUCER MODEL S-VAW 4-7 VOLUSON® ABDOMINAL TRANSDUCER
- 1. COMPANY INFORMATION. Name: Medison America, Inc. Address: 6616 Owens Drive, Pleasanton, CA 94588. Phone: (925) 463-1830. Contact: Bob Leiker - Vice President, Regulatory and Quality. Manufacturer: Kretztechnik AG, Tiefenbach 15, A-4871, Zipf, Austria.
- 2. DEVICE IDENTIFICATION. Trade Name: (1) Model S-VNW 5-10 Voluson® Small Parts Transducer (2) Model S-VAW 4-7 Voluson® Abdominal Transducer. Common Name: Diagnostic Ultrasound Transducer. Classification Name: Diagnostic Ultrasound Transducer, 90-1TX.
- 3. PREDICATE DEVICE. For Model S-VNW 5-10: Kretztechnik Transducer Model S-NLM 5-10. For Model S-VAW 4-7: Kretztechnik Transducer Models S-VSW 3-5 and S-ACA 4-7. The three predicate devices were all cleared with the Combison 530D system under 510(k)'s K940942 and K974813. See also Combison 530D Special Report dated October 23, 1997.
- 4. DEVICE DESCRIPTION. General: Transducer S-VNW 5-10 is a multielement, mechanically steered linear array (volume) probe for use with the Combison 530D Diagnostic Ultrasound System. The center frequency is 7.5 MHz, and the nominal transmit frequency range is 5 to 10 MHz. The scan width is 40 mm and the maximum depth range is 75 mm. Transducer S-VAW 4-7 is a multielement curved array probe for use with the Combison 530D system. The center frequency is 4.5 MHz, and the nominal transmit frequency range is 4 to 7 MHz. The image starting width is approximately 70 mm and the maximum depth range is 200 mm. Operating Modes: Both Transducer S-VNW 5-10 and Transducer S-VAW 4-7 operate in B-mode (including three-dimensional volume imaging), M-mode, Pulsed Doppler, and Color Flow modes.
- 5. INTENDED USES. Transducer S-VNW 5-10: Pediatric, small organs (including thyroid, testicles, salivary gland, breast, and lymph nodes); peripheral vascular; and musculoskeletal-conventional. Transducer S-VAW 4-7: Fetal, abdominal, pediatrics, and small organs.
- 6. COMPARISON WITH PREDICATE DEVICE. Transducer S-VNW 5-10: This device is a modification of its predicate device. The major difference is that the modified transducer contains 192 elements while the predicate device has 128. Transducer S-VAW 4-7: This device is a combination of its two predicate devices. The principle difference is that the subject device is a curved array while one of the two predicate devices was an annular array. Evaluation: Transducers S-VNW 5-10 and S-VAW 4-7 are both similar in design and function to their respective predicate devices. Neither transducer introduces new modes of operation or indications for use beyond those previously cleared.
- 7. PERFORMANCE DATA. Measurement accuracy, precision of volume reconstruction, electrical and thermal safety, and software performance have been tested in accordance with applicable guidelines and standards with satisfactory results. Patient contact materials remain unchanged. Acoustic output has been measured as specified in pertinent FDA recognized standards and is reported according to Track 3.
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Image /page/1/Picture/1 description: The image is a black and white logo for the Department of Health & Human Services - USA. The logo features a stylized image of an eagle with three human profiles incorporated into its design. The text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" is arranged in a circular pattern around the eagle image.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
JUL -8 1999
Medison America, Inc. C/O Carole Stamp TUV product Services 1775 Old Highway 8 New Brighton, MN 55112-1891
RE: K992155 Model S-VNW 5-10 Voluson Small parts Transducer Model S-VAW 4-7 Voluson Abdominal Transducer Dated: June 24, 1999 Received: June 25, 1999 Regulatory Class: II 21 CFR 892.1570/Procode: 90 ITX
Dear Ms. Stamp:
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 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 Combison 530D Diagnostic Ultrasound System as described in your premarket notification:
Transducer Model Number(s):
Model S-VNW 5-10 Voluson Small Parts Model S-VAW 4-7 Voluson Abdominal
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. A substantially equivalent determination assumes compliance with the Good Manufacturing Practice requirement, as set forth in the Quality System Regulation (QS) for Medical Devices: General (GMP) regulation (21 CFR Part 820) and that, through periodic QS inspections, the FDA will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, the Food and Drug Administration (FDA) may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification does not affect any obligation you may have under sections 531 and 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. Stamp
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.
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) 594-4591. 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 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 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 Robert Phillips, Ph.D at (301) 594-1212.
Sincerely yours,
CAPT Daniel Schultz, M.D.
CAPT Daniel Schultz, M.D. Acting Director, Division of Reproductive, Abdominal, Ear, Nose and Throat, and Radiological Devices Office of Device Evaluation Center for Devices and Radiological Health
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.
## Ultrasound Device Indications Statement
| 510(k) Number: | |
|----------------------|------------------------------------------------------------------------------------|
| Device Name: | Voluson C530D Ultrasound System |
| Transducer: | S-VNW 5-10 Small Part Volume Transducer |
| Indications for Use: | Diagnostic ultrasound imaging or fluid flow analysis of the human body as follows: |
Mode of Operation (*includes simultaneous B-mode)
| Mode of Operation (* includes simultaneous B-mode) | | | | | | | | | | |
|----------------------------------------------------|---|---|----|------|------|-------------------|-----------------------------------|------------------------------|--------------------------------------|----------------------------------|
| Clinical Applications | A | B | M* | PWD* | CWD* | Color<br>Doppler* | Power<br>(Amplitude)<br>Doppler * | Color<br>Velocity<br>Imaging | Combined<br>(Specify)*<br>See Note 1 | Other<br>(Specify)<br>See Note 2 |
| Ophthalmic | | | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| Intraoperative:<br>(Specify) | | | | | | | | | | |
| Intraoperative<br>Neurological | | | | | | | | | | |
| Pediatric | E | E | E | E | E | E | E | | E | N |
| Small Organ<br>(Specify) See Note 3 | E | E | E | E | E | E | E | | E | N |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Transrectal | | | | | | | | | | |
| Transvaginal | | | | | | | | | | |
| Transurethral | | | | | | | | | | |
| Intravascular | | | | | | | | | | |
| Peripheral vascular | E | E | E | E | E | E | E | | E | N |
| Laparoscopic | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | E | E | E | E | E | E | E | | E | N |
| Musculo-skeletal Superficial | | | | | | | | | | |
| Other (Specify) | | | | | | | | | | |
N = new indication; P = Previously cleared in K940942, Voluson C530D Ultrasound System; P = Previously cleared in K974813, Voluson C530D Ultrasound System with Power Doppler; E = added under Appendix E
Other Indications or Modes:
Note 1: PWD/Color Doppler, PWD/Power Doppler.
Note 2: 3D Volume Imaging Mode
Note 3: For example: thyroid, testicles, salivary gland, breast, lymph nodes, and pediatric patients.
| | Concurrence of CDRH, Office of Device Evaluation (ODE) |
|--|--------------------------------------------------------|
| | Prescription Use (Per 21 CFR 801.109) |
| | (Division Sign-Off) |
|--|-------------------------------------------|
| | Division of Reproductive, Abdominal, ENT, |
| | and Radiological Devices |
| Prescription Use | <div> <img alt="checkbox" src="checkbox"/> </div> |
|----------------------|---------------------------------------------------|
| (Per 21 CFR 801.109) | |
| 510(k) Number | K992155 |
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## Ultrasound Device Indications Statement
| 510(k) Number: | Voluson C530D Ultrasound System |
|----------------------|------------------------------------------------------------------------|
| Device Name: | |
| Transducer: | S-VAW 4-7 Abdominal Volume Transducer |
| Indications for Use: | Diagnostic ultrasound imaging or fluid flow analysis of the human body |
as follows:
Mode of Operation (*includes simultaneous B-mode)
| Clinical Applications | A | B | M* | PWD* | CWD* | Color<br>Doppler<br>* | Power<br>(Amplitude)<br>Doppler * | Color<br>Velocity<br>Imaging | Combined<br>(Specify)*<br>See Note 1 | Other<br>(Specify)<br>See Note 2 |
|----------------------------------|---|---|----|------|------|-----------------------|-----------------------------------|------------------------------|--------------------------------------|----------------------------------|
| Ophthalmic | | | | | | | | | | |
| Fetal | | P | P | P | | P | P¹ | | | P |
| Abdominal | | P | P | P | | P | P¹ | | | P |
| Intraoperative: | | | | | | | | | | |
| (Specify) | | | | | | | | | | |
| Intraoperative | | | | | | | | | | |
| Neurological | | | | | | | | | | |
| Pediatric | | P | P | P | | P | P¹ | | | P |
| Small Organ | | P | P | P | | P | P¹ | | | P |
| (Specify) See Note 3 | | | | | | | | | | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac | | | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Transrectal | | | | | | | | | | |
| Transvaginal | | | | | | | | | | |
| Transurethral | | | | | | | | | | |
| Intravascular | | | | | | | | | | |
| Peripheral vascular | | | | | | | | | | |
| Laparoscopic | | | | | | | | | | |
| Musculo-skeletal<br>Conventional | | | | | | | | | | |
| Musculo-skeletal Superficial | | | | | | | | | | |
| Other (Specify) | | | | | | | | | | |
N = new indication; P = Previously cleared in K940942, Voluson C530D Ultrasound System; P = Previously cleared in K974813, Voluson C530D Ultrasound System with Power Doppler; E = added under Appendix E
Other Indications or Modes:
Note 1: PWD/Color Doppler, PWD/Power Doppler.
Note 2: 3D Volume Imaging Mode
Note 3: For example: thyroid, testicles, salivary gland, breast, lymph nodes, and pediatric patients.
Concurrence of CDRH, Office of Device Evaluation (ODE)
Prescription Use (Per 21 CFR 801.109)
| (Division Sign-Off)<br>Division of Reproductive, Abdominal, ENT,<br>and Radiological Devices | |
|----------------------------------------------------------------------------------------------|---------|
| 510(k) Number | K992155 |
Prescription Use
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.