(108 days)
The Medrad Stellant CT Injector System is intended for the specific purpose of injecting intravenous contrast media into humans for diagnostic studies in computed tomography (CT) applications.
The Stellant CT Injector System is comprised of the same main components as the predicate device: an Injector Head, a Display Control Unit, and sterile disposables.
The provided document is a 510(k) summary for the Medrad Stellant CT Injector System. This type of regulatory submission focuses on demonstrating substantial equivalence to a predicate device, rather than proving performance against specific acceptance criteria in the manner one might find for a novel diagnostic algorithm.
Therefore, many of the requested details about acceptance criteria, study design, ground truth, and sample sizes for AI/algorithm performance are not applicable to this document as it describes a medical device (an injector system), not an artificial intelligence or machine learning diagnostic tool.
However, I can extract the information relevant to the device's comparison to its predicate and the testing conducted for its clearance.
Acceptance Criteria and Device Performance (for Substantial Equivalence)
The acceptance criteria for the Medrad Stellant CT Injector System, as presented in this 510(k) summary, are primarily focused on demonstrating substantial equivalence to its predicate device, the Medrad EnVision CT Injector System (K934086 and K993728). This means the device must share the same intended use, similar operational parameters, similar labeling, and be used in a similar manner.
The "study" in this context is the design verification and validation testing conducted as part of Medrad's Quality System, in compliance with FDA's Quality System Regulations (QSRs). The results of these tests demonstrated that the design specifications for the Stellant CT Injector System were met and that it meets applicable requirements of international standards.
| Acceptance Criterion (Implicit for Substantial Equivalence) | Reported Device Performance (vs. Predicate) |
|---|---|
| Intended Use: Inject intravenous contrast media into humans for diagnostic studies in CT applications. | Same (Explicitly stated to maintain the same intended use as the predicate). |
| Operational Parameters: Demonstrated similarity or improvement while maintaining safety and effectiveness. | Similar or Improved: While most parameters are similar, some show advancements (e.g., color LCD vs. monochrome, 1-6 phases vs. 1-10 phases, multi-layered software stops vs. electrical stop with software backup, increased programmable pressure limit, Auto Dock/Retract/Advance, Remote Check for Air). These changes were verified to meet design specifications. |
| Labeling: Similar to predicate. | Similar. |
| Safety: Design controls, risk analysis, and verification/validation testing confirm safety. | Met: Risk analysis performed, and design verification and validation testing conducted. Test results demonstrate design specifications were met and applicable international standards were met. Safety features like "Multi-layered software stops with backup monitoring" are detailed. |
| Components: Comprised of same main components. | Same: Injector Head, Display Control Unit, and sterile disposables. |
| Sterilization & Materials: Similar to predicate. | Same for packaging, sterilization (EtO), Luer fittings (ISO compliant), syringe barrel/plunger materials, and connector tubing materials/length. Max pressure for connector tubing is higher (400 vs 355). |
Details of the "Study" (Design Verification and Validation Testing)
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Sample size used for the test set and the data provenance:
- Not applicable (N/A). This is a hardware device (injector system). The "test set" would refer to physical units of the device and its components undergoing engineering and performance testing rather than a dataset for an algorithm. The document does not specify the number of units tested.
- Data Provenance: The testing was conducted by Medrad Inc. as part of its internal Quality System. The country of origin of the data would therefore be the USA, where Medrad Inc. is located. It is inherently prospective with respect to the device's development and clearance.
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Number of experts used to establish the ground truth for the test set and the qualifications of those experts:
- Not applicable (N/A). "Ground truth" in this context is established by engineering specifications, international performance standards, and comparisons against the predicate device's established performance. The "experts" would be the engineering and quality control teams at Medrad, verifying that the device meets these specifications. Their qualifications would be expertise in medical device design, manufacturing, and regulatory compliance.
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Adjudication method for the test set:
- Not applicable (N/A). Adjudication methods like 2+1 or 3+1 are used for human expert review of uncertain cases in diagnostic studies. For a hardware device, performance is evaluated against predefined engineering tolerances and standards. Any discrepancies would likely be resolved through further engineering analysis and re-testing until specifications are met.
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If a multi reader multi case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance:
- Not applicable (N/A). This is not a diagnostic AI device or image reading assistance tool. Therefore, no MRMC study or AI-assistance effectiveness was performed or is relevant.
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If a standalone (i.e. algorithm only without human-in-the-loop performance) was done:
- Not applicable (N/A). This device is a hardware injector system, not an algorithm. Its "standalone" performance refers to its functional operation as a medical device.
-
The type of ground truth used:
- For a hardware device like this, the "ground truth" relates to engineering specifications, performance standards (e.g., flow rate accuracy, pressure limits, safety mechanism functionality), and comparison to the predicate device's established capabilities. It's about meeting quantifiable design outputs and demonstrating functional equivalence/improvement.
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The sample size for the training set:
- Not applicable (N/A). There is no "training set" in the context of an AI/ML algorithm for a hardware medical device like an injector system.
-
How the ground truth for the training set was established:
- Not applicable (N/A). As there is no training set, this question is not relevant.
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JAN 1 9 2003
Image /page/0/Picture/1 description: The image shows the word "medrad" in a bold, sans-serif font. The letters are all in lowercase, except for the "R" which is capitalized. There is a registered trademark symbol to the upper right of the letter "d". The word is black and the background is white.
Special 510(k) SUMMARY OF SAFETY AND EFFECTIVEN
| Submitter's Name: | Medrad Inc. |
|---|---|
| Submitter's Address: | One Medrad Drive, Indianola, PA 15051 USA |
| Telephone Number: | (412) 767-2400, ext. 3536 |
| Fax Number: | (412) 767-2499 |
| Contact Person: | Frank Pelc |
| Date: | September 23, 2002 |
| Proprietary Name: | Medrad Stellant CT Injector System |
| Common Name: | Powered Injector with Syringe |
| Classification: | DXT |
| Classification Name: | Injector and Syringe, Angiographic |
| Predicate Device: | Medrad EnVision CT Injector System K934086 and K993728 |
Substantial Equivalence: The information provided in this premarket notification demo
that the proposed device is substantially equivalent to a legally marketed device. The prmonstrates he proposed Medrad, Inc. Is substantially equivalent to a lega Stellant CT Injector System is substantially equivalent to the EnVision CT Injector System ledrad Drive (K934086 and K993728).
15051-0780
The Medrad Stellant CT Injector System maintains the same intended use, similar operational 2) 767-2400 parameters, similar labeling and is used in a manner similar to the predicate device.
Like the EnVision, the Stellant is a syringe-based fluid delivery system indicated for delivery of contrast media during computed tomography procedures. It is intended to be used for the specific purpose of injecting intravenous contrast medium into the human vascular system for computed tomography studies.
The Stellant CT Injector System is comprised of the same main components as the predicate device: an Injector Head, a Display Control Unit, and sterile disposables.
Medrad has established, as part of its Quality System, design controls in compliance with FDA's Quality System Regulations (QSRs). These design controls are applied to all Medrad product development processes and product design changes. These design controls were applied to the development of the Stellant CT Injector and meet the requirements of the FDA's QSRs.
As part of the design control a risk analysis was performed, and design verification and validation testing was conducted to support the conclusion drawn by the risk analysis.
Test results demonstrate that the design specifications for the Stellant CT Injector System were met and that the Stellant CT Injector System meets the applicable requirements of the international standards cited. Therefore, it has been determined that the Stellant CT Injection is substantially equivalent to the predicate device, its predecessor, for its intended use when used as prescribed in the User Operation Manual.
A comparison of features and principles of operation between the proposed device and predicate device is provided in the table below.
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Image /page/1/Picture/0 description: The image shows the word "medrad" in a stylized, bold, black font, with a registered trademark symbol to the right of the word. Below the word "medrad", the number "K023183" is written in a handwritten style. The number is also in black ink. The background of the image is white.
COMPARISON DATA
| Feature | Proposed Device:Stellant CT Injector System | Predicate Device:EnVision CT Injector System(K934086 and K993728) |
|---|---|---|
| Intended Use | Intended to be used for the specificpurpose of injecting intravenous contrastmedia into humans for diagnostic studiesin computed tomography (CT) applications. | Same |
| Single or Dual SyringeSystem | Single and dual syringe models | Single syringe system |
| Information Display | Color LCD | Monochrome LCD |
| Programming Keys | Non-dedicated keys - software determined | Non-dedicated Keys - SoftwareDetermined |
| Touch screen | Yes | Yes |
| Multi-Phase | 1 - 6 phases per injection | 1-10 Phases Per Injection |
| Arming Modes | Single | Single/Multi-Arm |
| Protocol StorageCapability | 32 protocols | 50 Protocols |
| Hold Capability | 20 minutes max. | 0 - 600 seconds |
| Scan Delay | 1 - 300 seconds | 0 - 99 seconds |
| Safety Stop Mechanism | Multi-layered software stops with backupmonitoring | Electrical stop with a softwarebackup system |
| Syringe System | Single syringe model: 200 ml syringeDual syringe model: two 200 ml syringes | One 200 ml or 125 ml syringe |
| Programmed Volume | 1 to 200 ml | 1 to 200 ml or 1 to 125 mldepending on syringe size |
| Volume RemainingReadout | LED on injector head; graphical andnumeric on LCD | LED |
| Fill Rate | Variable up to 10 ml/sec | 2 ml/sec to 9.9 ml/sec |
| Flow Rate | 0.1ml/s to 10.0 ml/s | 0.1 ml/sec to 9.9 ml/sec |
| Programmable PressureLimit | 325 PSI default, user settable 50 to 300PSI | Settable from 25 to 300 PSI |
| Pause | Programmable - 1 sec to 900 sec in 1 secincrements | Programmable - 1 sec to 10 min |
| Autofill | Fill rate 4 ml/sec | Fill rate 2 ml/sec to 9 ml/sec in 1ml/sec increments |
| Retract Control | Yes (Automatic) | Yes |
| Remote Start Switch | Yes | Yes |
| Pressure Graph | Yes | No |
| Syringe Sensing | Yes | Yes |
| Autoload | Yes | Yes |
| AutoDock/Retract/Advance | Yes; user-selectable autodock and advance;user-selectable auto-retract | No |
| Protocol Lock / RemoteArming | Yes | No |
| Remote Check for Air(from Head) | Yes | No |
| Scan Delay | 1sec to 300 sec in 1sec increments | 0 - 99 sec in 1 sec increments |
| Store/Recall | 32 protocols | 50 protocols |
| Test Inject | Yes | Yes |
| Syringe Heat Maintainer | Yes | Yes |
| Sterile Disposables | ||
| Feature | Proposed Device:Stellant CT Injector System | Predicate Device:EnVision CT Injector System(K934086 and K993728) |
| Packaging | Tyvek lid covering polystyrene tray | Same |
| Sterilization | EtO sterilization | Same |
| Luer Fittings | ISO 594-1 & ISO 594-2 compliant design | Same |
| Syringe: | ||
| Barrel MaterialComposition | PET | Same |
| Barrel Length | 7.504" | 7.273" |
| Barrel OD | 2.002" | Same |
| Barrel ID | 1.844" | Same |
| Plunger MaterialComposition | Polycarbonate | Same |
| Plunger Cover | Polyisoprene with silicone coating | Same |
| Connector TubingComponents: | ||
| Maximum Pressure | 400 | 355 |
| Tube Material | PVC | Same |
| Tube Length | 60" | Same |
| Bonding Agent | Cyclohexanone | Same |
| T-connector | Polycarbonate | Same |
| Spike | ABS | None |
| Priming Tube | Polyethylene | None |
Image /page/1/Picture/3 description: The image shows a logo with a stylized letter "Q" in a bold, sans-serif font. The "Q" is partially obscured by a square shape, giving it a modern and abstract appearance. Below the "Q", the word "Quality" is written in a smaller, lighter font, suggesting that the logo represents a brand or organization focused on quality.
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Image /page/2/Picture/0 description: The image shows the word "medran" in a stylized, bold, sans-serif font, with a circled R trademark symbol next to it. Below the word, there is a handwritten alphanumeric code that reads "K023183". The text is black and the background is white.
Image /page/2/Picture/2 description: The image shows a logo with a stylized letter 'Q' in a bold, sans-serif font. Below the 'Q', there are two lines of text that appear to say 'Quality' and 'of Life'. The text is in a smaller font size than the 'Q' and is slightly blurred, making it difficult to read clearly. The logo has a simple, clean design.
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Image /page/3/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 a stylized symbol that resembles a caduceus, a traditional symbol of medicine, but with three branches instead of the usual one.
JAN 1 0 2003
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
Medrad, Inc. Mr. Frank W. Pelc III Regulatory Affairs Coordinator One Medrad Drive Indianola, PA 15051-0780
Re: K023183
Trade/Device Name: Medrad Stellant CT Injector System Regulation Number: CFR 870.1650 Regulation Name: Angiographic injector and syringe. Regulatory Class: Class II Product Code: DXT Dated: December 10, 2002 Received: December 11, 2002
Dear Mr. Pelc:
We have reviewed your Section 510(k) premarket notification of intent to market the device referenced above and 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) that do not require approval of a premarket approval application (PMA). 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 (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
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Page 2 - Mr. Frank W. Pelc III
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 Section 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), please contact the Office of Compliance at (301) 594-4635. 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 may be obtained 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/dsma/dsmamain.html
Sincerely yours.
Kaila Tuh
Bram D. Zuckerman, M.D. Director Division of Cardiovascular Devices Office of Device Evaluation Center for Devices and Radiological Health
Enclosure
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Intended Use
Indications for Use Statement
510(k) Number:
Device Name: Medrad Stellant CT Injector System
Indications for Use:
The Medrad Stellant CT Injector System is intended for the specific purpose of injecting intravenous contrast media into humans for diagnostic studies in computed tomography (CT) applications.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
DaGTM
diovascu
510(k) Number K023183
Prescription Use √
Over-The-Counter Use_____(Per 21 CFR 801.109)
§ 870.1650 Angiographic injector and syringe.
(a)
Identification. An angiographic injector and syringe is a device that consists of a syringe and a high-pressure injector which are used to inject contrast material into the heart, great vessels, and coronary arteries to study the heart and vessels by x-ray photography.(b)
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.