The Premica™-CT Contrast Media Delivery System is indicated for the controlled automatic administration, on the venous side, of contrast media (CM) for computed tomography scan. The System consists of the Premica™-CT instrument, the Bottle Spike, the Day Set, the Patient Set, and accessories. The System is not intended for injection of CM for coronary arteriography, or for any other use for which the device is not indicated. The Premica™-CT Contrast Media Delivery System is not intended for use with children under 16 years of age.
Device Story
Automatic injector for contrast media (CM) used in CT imaging; operated by clinicians in clinical settings. System components: pump console, remote control panel, handswitch, bottle insulators, and disposables (Bottle Spike, Day Set, Patient Set). Device delivers CM at controlled flow rates (0.2–9.9 ml/s) and volumes (up to 300 ml). Features include air and pressure sensors for safety, saline flush capability, and multi-patient CM reservoir usage. Software prevents reuse of disposables via physical design (break-off spike) and electronic control. Healthcare providers use the remote panel to program injection protocols (up to 100 protocols of 2 phases each) and monitor delivery. Benefits include automated, precise CM administration and reduced risk of cross-contamination through validated disposable design.
Clinical Evidence
No clinical data. Evidence consists of bench testing, including bacteriological studies demonstrating that the system does not introduce microbial contamination during normal operation and that retrograde migration of microorganisms is limited to the distal end of the Patient Set, preventing cross-contamination.
Technological Characteristics
Automatic contrast media injector. Components: pump, remote panel, handswitch, bottle insulators. Flow rate: 0.2–9.9 ml/s. Pressure limit: 8 bar. Features: air/pressure sensors, saline flush, multi-phase injection (up to 2 phases). Disposables: Bottle Spike, Day Set, Patient Set. Software-controlled protocol management and disposable reuse prevention.
Indications for Use
Indicated for controlled automatic venous administration of contrast media for CT scans in patients 16 years of age and older. Contraindicated for coronary arteriography or other non-indicated uses.
Regulatory Classification
Special Controls
*Classification.* Class II (special controls). The device, when it is a non-patient contacting balloon inflation syringe intended only to inflate/deflate balloon catheters and monitor pressure within the balloon, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 870.9.
Predicate Devices
DXT MEDRAD® ENVISION CT™ Injector System (K934086)
Submission Summary (Full Text)
{0}------------------------------------------------
K983314
510(k) Summary Nycomed Amersham Imaging Premica™-CT Contrast Media Delivery System (per 21 CFR 807.92)
### SUBMITTER NAME AND ADDRESS 1.
Nycomed Amersham Imaging 101 Carnegie Center Princeton, NJ 08540-9998
Ms. Kathy Patterson Contact Person: Telephone: (847) 593-6300, Extension 341
## DEVICE NAME 2.
| Proprietary Name: | Premica™-CT Contrast Media Delivery System |
|----------------------|--------------------------------------------|
| Common/Usual Name: | Automatic injector for contrast media |
| Classification Name: | Injector, contrast medium, automatic |
#### 3. PREDICATE DEVICE/S
74 - DXT MEDRAD® ENVISION CT™ Injector System - K934086
#### 4. DEVICE DESCRIPTION
The Premica™-CT Contrast Media Delivery System consists of the following components:
- the console consisting of the pump, the main control panel, and the power . supply,
- . the remote control panel,
- the remote test injection trigger (handswitch), and .
- associated cables. .
- . bottle insulators, and
- pedestal, connector, and wheels. .
The printer is provided as an accessory.
{1}------------------------------------------------
# INTENDED USE 5.
The Premica™-CT Contrast Media Delivery System is indicated for the controlled automatic administration, on the venous side, of contrast media (CM) for computed tomography scan. The System consists of the Premica™-CT instrument, the Bottle Spike, the Day Set, the Patient Set, and accessories. The System is not intended for injection of CM for coronary arteriography, or for any other use for which the device is not indicated. The Premica™-CT Contrast Media Delivery System is not intended for use with children under 16 years of age.
# BASIS FOR SUBSTANTIAL EQUIVALENCE 6.
Information supplied in this premarket notification includes descriptive information about the intended use, operation, and technological characteristics. A side-by-side comparison of the Premica™-CT Contrast Media Delivery System with the MEDRAD® ENVISION CT™ Injector System is provided in Table J-1. below.
| Table J-1. Comparison of Premica™-CT Contrast Media Delivery System |
|---------------------------------------------------------------------|
| with the MEDRAD® ENVISION CT™ Injector System |
| Characteristic | Premica™-CT Contrast<br>Media Delivery System | MEDRAD®<br>ENVISION CT™<br>K934086 |
|-----------------------------------------------------------------------------------------------|------------------------------------------------|----------------------------------------------------------------------------------------|
| <b>Indications</b> | | |
| Indicated for controlled<br>administration of contrast media<br>for computed tomography scans | Yes | Yes |
| <b>Physical design</b> | | |
| Remote Panel | Yes | Yes |
| Weight (kg) | Pump 8 (17.6 pounds)<br>Panel 1.7 (3.7 pounds) | Display 4.4 (9.7 pounds)<br>Console 5.8 (12.8 pounds)<br>Head Control 3.0 (6.7 pounds) |
| Temperature Control | Bottle Insulators | Syringe heater |
| Single Patient Use Disposables | Patient Set | Syringe |
| Connecting Tubing | 1.5 meters | 60 inches (1.52 meters) |
| Access Types | Rigid and flexible | Rigid and flexible |
| Access Gauge | 16 to 20 | Not specified |
| Multiple Patient Use CM | Yes | No |
{2}------------------------------------------------
# Table J-1, Comparison of Premica™-CT Contrast Media Delivery System with the MEDRAD® ENVISION CT™ Injector System (Continued)
| Characteristic | Premica™-CT Contrast<br>Media Delivery System | MEDRAD®<br>ENVISION CT™<br>K934086 |
|----------------------------------------------|----------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------|
| Designed to prevent reuse of<br>disposables? | Yes | No |
| Operational Characteristics | | |
| Flow Rate (ml/s) | 0.2 to 9.9 | 0.1 to 9.9 |
| Injection Volume/Injection | 0 to 300 ml | 1 ml to syringe capacity |
| Maximum Injection Duration | 10 s to 9 min 59 sec;<br>Depends on injection volume | Up to 33:20; Depends on<br>volume, rate, and syringe size |
| CM Container Volume (ml) | 0 to 500 | Syringe sizes:<br>125 or 200 ml |
| Air Sensor | Yes (One for each bottle and<br>one for the Patient Set) | No (Requires monitoring by<br>the Operator) |
| Pressure Sensor | Yes | Yes |
| Pressure Limit | 8 bar | Programmable from 25 to 300<br>psi in 5 psi increments |
| Test Injection Default | Default: 5 ml; 1 ml/s;<br>increments of 0.1 ml/s | Default: 5 ml; 1.5 ml/sec;<br>Volume: 1 - 10 ml; 1 ml<br>increments<br>Flow rate: 0.1 ml/sec to 9.9<br>ml/sec in 0.1 ml increments |
| Injection Capabilities | Up to 2 phases | 1 to 8 phases |
| Interphase Delay (sec) | 0-99 | Optional |
| Protocol Storage | Up to 100 of 2 phases each | Up to 50 of 8 phases each |
| Saline Flush | Yes | No |
| Audible Scan Delay Signal | 0 to 99 sec | 0 to 99 sec |
The major differences between the two systems are the ability of the Premica™-CT to be used for multiple patients without changing the reservoir of contrast medium, and System design which prevents disposables reuse. Nycomed Amersham Imaging has conducted testing to demonstrate that these differences do not raise new issues of safety and effectiveness. Bacteriological testing demonstrates that
{3}------------------------------------------------
normal use of the disposables of the Premica™-CT System does not introduce Sets are not susceptible to microbial contamination into the contrast. contamination when the System is used according to instructions for normal operation. Studies also demonstrate that the risk of cross contamination from an infected patient is negligible since the retrograde migration of the microorganisms and viruses was limited solely to the distal end of the Patient Set. The design of the Bottle Spike prevents re-use since the tip breaks off within the bottle upon Spike removal. Software control prevents re-use of the Day Set and Patient Set, past their intended durations of use. Validation activities demonstrate that the System fulfills this specification.
Nycomed Amersham Imaging believes that the information provided within this premarket notification and summarized above demonstrates that the Premica™-CT Contrast Media Delivery System is substantially equivalent to the MEDRAD® ENVISION CT™ Injector System. Testing demonstrates that the procedural difference, specifically multiple dose versus single dose, is safe and raises no new issues of safety or effectiveness.
{4}------------------------------------------------
Image /page/4/Picture/0 description: The image shows the logo for the Department of Health & Human Services - USA. The logo consists of a circle with the text "DEPARTMENT OF HEALTH & HUMAN SERVICES - USA" arranged around the circumference. Inside the circle is a stylized image of three human profiles facing to the right, stacked on top of each other.
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
FEB 1 9 1999
Nycomed Amerham Imaging, Inc. c/o Rosina Robinson, RN, MED, RAC Senior Staff Consultants Medical Device Consultants, Inc. 49 Plain Street North Attleboro, MA 02760
Re:
K983314
Premica™ CT Contrast Media Delivery System Dated: January 6, 1999 Received: January 7, 1999 Regulatory class: II 21 CFR 870.1650/Procode: 74 IZQ
Dear Ms. Robinson:
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). 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. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic QS 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.
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 predicate 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) 594-4613. 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 notfication"(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/dsma/dsmamain.html".
Sincerely yours,
sct
Capt. Daniel G. 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
Enclosure
{5}------------------------------------------------
510(k) Number (if known): K 90 3314
Device Name: Nycomed Amersham Imaging Premica" -CT Contrast Media Delivery System
4
Indications For Use:
The Premica™-CT Contrast Media Delivery System is indicated for the controlled automatic administration, on the venous side, of contrast media (CM) for computed tomography scan. The System consists of the Premica™-CT instrument, the Bottle Spike, the Day Set, the Patient Set, and accessories. The System is not intended for injection of CM for coronary arteriography, or for any other use for which the device is not indicated. The Premica™ -CT Contrast Media Delivery System is not intended for use with children under 16 years of age.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NECESSARY)
| Concurrence of CDRH, Office of Device Evaluation (ODE) | |
|--------------------------------------------------------|--------------------------------------------|
| Prescription Use | <div style="display:inline-block;">✓</div> |
| (Per 21 CFR 801.109) | (Division Sign-Off) |
| | Division of Reproductive, Abdominal, ENT, |
| | and Radiological Devices |
| 510(k) Number | K983314 |
| | |
| | Over-The-Counter Use |
Nycomed Amersham Imaging Inc 510(k) 9/18/98 CONFIDENTIALNycomed Amersham Imaging Inc. 510(k) Premica™-CT Contrast Media Delivery System
**CONFIDENTIAL**
Page vi
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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.
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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.
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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.
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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
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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.