K061083 · Shantou Institute of Ultrasonic Instuments · IYO · Jun 6, 2006 · Radiology
Device Facts
Record ID
K061083
Device Name
CTS-7700
Applicant
Shantou Institute of Ultrasonic Instuments
Product Code
IYO · Radiology
Decision Date
Jun 6, 2006
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 892.1560
Device Class
Class 2
Attributes
Pediatric
Indications for Use
Ultrasonic pulsed echo imaging and measurement for abdominal, pediatric, small organ, cardiac, peripheral vascular applications
Device Story
Digital diagnostic ultrasound system; supports 2D (B-mode) and B/M-mode. Inputs: ultrasonic signals from convex (C3L60B) or linear (L7L38B) transducers. Processing: 32-channel digital beam-former; dynamic receive focus; pre-processing (gain, TGC, edge enhancement, persistence); post-processing (gray maps). Outputs: real-time ultrasound images on monitor; cine review; measurements (distance, area, circumference, angle, time, slope, heart rate). Used in clinical settings by healthcare professionals. Features image storage (HDD/USB) and printing. Benefits: provides diagnostic visualization and quantitative data for clinical decision-making in specified anatomical applications.
Clinical Evidence
Bench testing only. No clinical data provided.
Technological Characteristics
Digital ultrasound system; 32-channel digital beam-former. Transducers: C3L60B (2.5-5.0 MHz convex) and L7L38B (5.0-9.0 MHz linear). Modes: B, 2B, B/M. Features: 256 gray scale, dynamic receive focus, real-time zoom, cine loop (256 frames). Connectivity: USB, parallel port, video printer. Storage: 60GB HDD, BMP format. Software: embedded system for image processing and measurement.
Indications for Use
Indicated for ultrasound imaging and measurement in abdominal, pediatric, small organ (thyroid, testes, breast), cardiac (pediatric), and peripheral vascular applications. Includes fetal, uterus, ovary, and prostate imaging. Prescription use only.
Regulatory Classification
Identification
An ultrasonic pulsed echo imaging system is a device intended to project a pulsed sound beam into body tissue to determine the depth or location of the tissue interfaces and to measure the duration of an acoustic pulse from the transmitter to the tissue interface and back to the receiver. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.
Special Controls
*Classification.* Class II (special controls). A biopsy needle guide kit intended for use with an ultrasonic pulsed echo imaging system only is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 892.9.
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SIUI CTS-7700 Digital Ultrasound Imaging System
### Tab 9
K061083
Page 1 of 2
# PREMARKET NOTIFICATION [510(k)| Summary
| Trade Name: | CTS-7700 with C3L60B and L7L38B Transducers | JUN - 6 200 |
|-------------------------|--------------------------------------------------------------------------------|-----------------------|
| Common Name: | Digital Ultrasound Imaging System | |
| Classification Name: | Ultrasonic Pulsed Echo Imaging System, 90 IYO<br>(per 21 CFR section 892.1560) | |
| Manufacturer's Name: | Shantou Institute of Ultrasonic Instruments | |
| Address: | #77, Jinsha Road,<br>Shantou SEZ, 515041, China | |
| Corresponding Official: | Li Delai | |
| Title: | President | |
| Telephone: | (86) 754-8250150 | Fax: (86) 754-8251499 |
| US Agent: | Bob Leiker/ Consultant /QRS<br>7263 Cronin Circle, Dublin, CA 94568 | |
| | Telephone: 1-925-556-1302 | Fax: 1-866-718-3819 |
SIUI CTS-485, K012772 Predicate Device:
### Device Description:
The SIUI CTS-7700 is a digital diagnostic ultrasound system capable of the following operating modes: 2D (B mode) and B/M. The system is designed for use in linear and convex scanning modes and supports linear, and convex transducers. The system has cine review, image zoom, measurements and calculations, image storage and review, printing and recording capabilities. The system consists of probes, main unit, control panel and monitor.
Intended Use: Ultrasonic pulsed echo imaging and measurement for abdominal, pediatric, small organ, cardiac, peripheral vascular applications
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### Technological Characteristics:
- 1) Scanning modes: convex and linear scanning
- 2) Display modes:
- B-Mode (B, 2B) a)
- B/M-Mode b)
- 3) Supporting transducers:
- C3L60B: 2.5-5.0 MHz 60R 128e convex transducer a)
- L7L38B: 5.0-9.0 MHz 38mm 128e linear transducer b)
- 4) Focus mode:
- Transmit focus mode: 1-4 selectable, focus depth: variable a)
- Receive focus mode: dynamic focus b)
- Grey scale: 256 5)
- Pre-processing: 6)
- 32-channel digital beam-former; a)
- Receive gain (include TGC): 70dB b)
- c) Dynamic range: 35-66dB
- Edge enhancement: 4 steps d)
- Image persistence: 7 steps e)
- Line density: normal, high f)
- 7) Post-processing
10 types of gray maps, among which 4 types are user-definable
- Image manipulation: 8)
- Real-time zoom in x4.0 max. a)
- Frozen image b)
- 9) B/M-mode speed:
Time for full screen scroll: 1.2, 2.5, 5.0, 10.0 sec
- 10) Cine: Max. 256 frames
- 11) Image store and recall: 32 frames
- 12) Image orientation:
- a) Left/right flip
- b) Up/down flip
- 90-degree rotation (selectable steps: 0, 90, 180, 270 degrees) c)
- 13) Documentation and storage:
- 60GB HDD, images stored in BMP file format; a)
- b) USB interface memory, images stored in BMP file format
- Documentation devices: c)
- B&W video printer d)
- Parallel port printer (Inkjet or LaserJet) e)
- 14) Measurements and calculations
- General measurements and calculations a) 2D: Distance, Area, Circumference, and Angle M-Mode: Distance, Time, Slope, Heart rate
- Specific measurements and calculations b)
Abdomen, Obstetrics, Gynecology, Cardiology, Small parts, Peripheral Vascular
K061083
page 2 of 2
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Image /page/2/Picture/15 description: The image shows the logo for the U.S. Department of Health and Human Services. The logo features a stylized eagle emblem, with three curved lines representing the eagle's body and wings. The words "DEPARTMENT OF HEALTH & HUMAN SERVICES · USA" are arranged in a circular pattern around the emblem.
#### DEPARTMENT OF HEALTH & HUMAN SERVICES
Food and Drug Administration 9200 Corporate Boulevard Rockville MD-20850
JUN - 6 2006
Shantou Institute of Ultrasonic Instruments % Mr. Bob Leiker Consultant/QRS 7263 Cronin Circle DUBLIN CA 94568
Re: K061083
Trade Name: CTS-7700 Digital Ultrasound Imaging System Regulation Number: 21 CFR 892.1560 Regulation Name: Ultrasonic pulsed echo imaging system Regulation Number: 21 CFR 892.1570 Regulation Name: Diagnostic ultrasonic transducer Regulatory Class: II Product Code: IYO and ITX Dated: April 3, 2006 Received: April 18, 2006
Dear Mr. Leiker:
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 CTS-7700 Digital Ultrasound Imaging System, as described in your premarket notification:
Transducer Model Number
Convex Array C3L60B (2.5-5.0 MHz 60mm 128e convex transducer) Linear Array L7L38B (5.0-9.0 MHz 38mm 128e linear transducer)
Protecting and Promoting Public Health
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Page 2 - Mr. Leiker
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 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), please contact the Office of Compliance at (240) 276-0120. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR Part 807.97). You may obtain other general information on your responsibilities under the Act from the Division of Small Manufacturers, International 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/industry/support/index.html
If you have any questions regarding the content of this letter, please contact Sophie Paquerault at (301) 594-1212.
Sincerely yours,
David A. Ingram
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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Diagnostic Ultrasound Indications for Use Form
## 3.1 System Indications for Use Form
Device Name: CTS-7700
#### Mode of Operation
| Clinical Application | A | B | M | PWD | CWD | Color Doppler | Power (Amplitude) Doppler | Color Velocity Imaging | Combined (Specify) | Other (Specify) |
|--------------------------------|---|---|---|-----|-----|---------------|---------------------------|------------------------|--------------------|-----------------|
| Opthalmic | | | | | | | | | | |
| Fetal | | N | | | | | | | N | |
| Abdominal | | N | | | | | | | N | |
| IntraOperative (Cardiac) | | | | | | | | | | |
| IntraOperative Neurological | | | | | | | | | | |
| Pediatric | | N | | | | | | | N | |
| Small Organ (Specify) | | N | | | | | | | N | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac (Adult) | | | | | | | | | | |
| Cardiac (Pediatric) | | N | | | | | | | N | |
| Transesophageal | | | | | | | | | | |
| Trans-Rectal | | | | | | | | | | |
| Trans-Vaginal | | | | | | | | | | |
| Trans-Urethral | | | | | | | | | | |
| Intra-Vascular | | | | | | | | | | |
| Peripheral Vascular | | N | | | | | | | N | |
| Laparascopic | | | | | | | | | | |
| Muscular-Skeletal Conventional | | | | | | | | | | |
| Muscular-Skeletal Superficial | | | | | | | | | | |
| Others (Specify) | | N | | | | | | | N | |
N = new indication P = previously cleared by FDA E = added under Appendix E
N = new indication Additional Comments: Small organs include: thyroid, testes, breast Combined: B/M Mode Other uses include: Uterus, Ovary, and Prostate
Concurrence of CDRH, Office of Device Evalue
David H. Pryor
(Division Sign-Org
Division of Reproductive, Abdominal,
and Radiological Devices K001083
510(k) Number
Prescription Use (Per 21 CFR 801.109)
Indications For Use
{5}------------------------------------------------
### Diagnostic Ultrasound Indications for Use Form
3.2 Transducer Indications for Use Form
Device Name: Convex Array C3L60B
| Mode of Operation | | | | | | | | | | |
|-----------------------------------|---|---|---|-----|-----|------------------|---------------------------------|------------------------------|-----------------------|--------------------|
| Clinical Application | A | B | M | PWD | CWD | Color<br>Doppler | Power<br>(Amplitude)<br>Doppler | Color<br>Velocity<br>Imaging | Combined<br>(Specify) | Other<br>(Specify) |
| Opthalmic | | | | | | | | | | |
| Fetal | | N | | | | | | | N | |
| Abdominal | | N | | | | | | | N | |
| IntraOperative<br>(Cardiac) | | | | | | | | | | |
| IntraOperative<br>Neurological | | | | | | | | | | |
| Pediatric | | | | | | | | | | |
| Small Organ<br>(Specify) | | | | | | | | | | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac (Adult) | | | | | | | | | | |
| Cardiac (Pediatric) | | N | | | | | | | N | |
| Transesophageal | | | | | | | | | | |
| Trans-Rectal | | | | | | | | | | |
| Trans-Vaginal | | | | | | | | | | |
| Trans-Urethral | | | | | | | | | | |
| Intra-Vascular | | | | | | . * | | | | |
| Peripheral Vascular | | | | | | | | | | |
| Laparascopic | | | | | | | | | | |
| Muscular-Skeletal<br>Conventional | | | | | | | | | | |
| Muscular-Skeletal<br>Superficial | | | | | | | | | | |
| Others (Specify) | | N | | | | | | | N | |
### Mode of Oneration
P = previously cleared by FDA E = added under Appendix E N = new indication Additional Comments: Uterus, Ovary, and Prostate, Combined: B/M Mode
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|---------------------------------------------------------------|---------|
| | |
| (Division Sign-Off) | |
| Division of Reproductive, Abdominal, and Radiological Devices | |
| 510(k) Number | K061083 |
- State of the Court of the Course
Prescription Use (Per 21 CFR 801.109)
{6}------------------------------------------------
### SIUI CTS-7700 Digital Ultrasound Imaging System
### Diagnostic Ultrasound Indications for Use Form
### 3.3 Transducer Indications for Use Form
Device Name: Linear Array L7L38B
| Mode of Operation | | | | | | | | | | |
|-----------------------------------|---|---|---|-----|-----|------------------|---------------------------------|------------------------------|-----------------------|--------------------|
| Clinical Application | A | B | M | PWD | CWD | Color<br>Doppler | Power<br>(Amplitude)<br>Doppler | Color<br>Velocity<br>Imaging | Combined<br>(Specify) | Other<br>(Specify) |
| Opthalmic | | | | | | | | | | |
| Fetal | | | | | | | | | | |
| Abdominal | | | | | | | | | | |
| IntraOperative<br>(Cardiac) | | | | | | | | | | |
| IntraOperative<br>Neurological | | | | | | | | | | |
| Pediatric | | N | | | | | | | N | |
| Small Organ<br>(Specify) | | N | | | | | | | N | |
| Neonatal Cephalic | | | | | | | | | | |
| Adult Cephalic | | | | | | | | | | |
| Cardiac (Adult) | | | | | | | | | | |
| Cardiac (Pediatric) | | | | | | | | | | |
| Transesophageal | | | | | | | | | | |
| Trans-Rectal | | | | | | | | | | |
| Trans-Vaginal | | | | | | | | | | |
| Trans-Urethral | | | | | | | | | | |
| Intra-Vascular | | | | | | | | | | |
| Peripheral Vascular | | N | | | | | | | N | |
| Laparascopic | | | | | | | | | | |
| Muscular-Skeletal<br>Conventional | | | | | | | | | | |
| Muscular-Skeletal<br>Superficial | | | | | | | | | | |
| Others (Specify) | | | | | | | | | | |
P = previously cleared by FDA E = added under Appendix E N = new indication Additional Comments: Small organs include: thyroid, testes, breast Combined: B/M Mode
#### Concurrence of CDRH, Office of Device Evaluation (ODE)
Nancy Brogdon
(Division Sign
Division of
and Radiologira Desa
510(k) Number K061083
Prescription Use (Per 21 CFR 801.109)
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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.
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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?
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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.
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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.
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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.
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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.
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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.
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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.