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510(k) Data Aggregation
(25 days)
ScanX Swift 2.0, ScanX Swift View 2.0
The ScanX Swift 2.0 is intended to be used for scanning and processing digital images exposed on Phosphor Storage Plates (PSPs) in dental applications.
The ScanX Swift View 2.0 is intended to be used for scanning and processing digital images exposed on Phosphor Storage Plates (PSPs) in dental applications.
The ScanX Swift 2.0 and ScanX Swift View 2.0 are dental devices that scan photostimulable phosphor storage plates that have been exposed in place of dental X- Ray film and allows the resulting images to be displayed on a personal computer monitor and stored for later recovery. It will be used by licensed clinicians and authorized technicians for this purpose. The device is an intraoral Plate Scanner, which is designed to read out all cleared plates of the sizes 0, 1, 2, 3, and 4. The phosphor plates are made of rigid photostimulable material. Intraoral phosphor plate x-ray (also known as phosphor storage plate or PSP x-ray) eliminates the need for traditional film processing for dental radiography. Phosphor storage plates can convert existing film based imaging systems to a digital format that can be integrated into a computer or network system. The intraoral Plates are put into the mouth of the patient, exposed to X-rays and then are read out with the device. The read-out-process is carried out with a 639nm Laser. The laser beam is moved across the plate by an oscillating MEMS mirror. The laser beam stimulates the top coating of the plates, which consists of x-ray sensitive material. Depending on the exposed dose, the coating emits different levels of light. These light particles are then requisitioned by an optical sensor (Photo Multiplier Tube/ PMT) and transferred into an electrical output signal is digitalized and is the data for the digital X-ray image. The data is transmitted via an Ethernet link to a computer. Before the plate is discharged, the remaining data is erased by a LED-PCB. The user chooses which size of plate he has to use and prepares the device by inserting the appropriate plate insert into the device. He then exposes the plate and then puts the plate directly into the insert by pushing it out of the light protection envelope. The user closes the light protection cover and starts the read out process. After the read out process the picture is transmitted to the connected PC, the picture can be viewed and the IP is erased and ready to use for the next acquisition. The main difference between the two models is on the ScanX Swift View 2.0 the display is larger, has touch capability, and can show a preview of the scan image. The device firmware is based on the predicate firmware and is of a moderate level of concern.
The provided text is a 510(k) summary for a medical device (ScanX Swift 2.0, ScanX Swift View 2.0), which focuses on demonstrating substantial equivalence to a predicate device. It does not contain information about acceptance criteria for a specific clinical endpoint or a study proving a device meets such criteria.
Instead, it discusses the technological characteristics, safety, and performance of the device in comparison to a predicate device based on non-clinical testing and engineering principles. The document explicitly states:
- "Summary of clinical performance testing: Not required to establish substantial equivalence."
Therefore, I cannot provide a table of acceptance criteria and reported device performance from a clinical study, nor details about sample sizes, ground truth establishment, or multi-reader multi-case studies, as this information is not present in the provided text.
However, I can extract information related to non-clinical performance testing and technical characteristics, which are used to establish substantial equivalence.
Here's an analysis based on the available information:
Key Takeaways from the Document:
- Device Type: Phosphor Storage Plate (PSP) scanner for dental X-ray images.
- Purpose: Scan exposed PSPs, process digital images, and display/store them.
- Approval Basis: Substantial equivalence to a predicate device (ScanX Edge K202633).
- No Clinical Study: Clinical performance testing was explicitly stated as "Not required to establish substantial equivalence." This means the FDA cleared the device based on non-clinical data and comparison to a legally marketed predicate.
Information Related to Device Performance and Equivalence (Non-Clinical):
The document compares the subject devices (ScanX Swift 2.0, ScanX Swift View 2.0) to the predicate device (ScanX Edge) based on various technical specifications and non-clinical performance metrics.
1. Table of "Acceptance Criteria" (Technical Specification Comparison) and Reported Device Performance (as listed for the subject devices):
Since no acceptance criteria are explicitly stated as pass/fail for a clinical endpoint, I will present the comparative technical specifications as the basis for demonstrating equivalence and "performance" in this context. The "acceptance criteria" here are effectively the predicate device's performance, and the subject device's performance is compared against it for substantial equivalence.
Characteristic | Predicate Device (ScanX Edge) "Acceptance Criteria" (for equivalence) | Subject Devices (ScanX Swift 2.0, ScanX Swift View 2.0) Reported Performance | Comparison / Impact Analysis |
---|---|---|---|
Max. theoretical resolution | Approx. 40 Lp/mm | Approx. 40 Lp/mm | SAME |
MTF (at 3 LP/mm) | More than 40% | Horizontal 59%, Vertical 49% (in 12.5µm pixel size mode) | Similar/better. (Subject device performance is higher than the predicate's stated 'more than 40%') |
DQE (at 3 LP/mm) | More than 3.4% | Horizontal 8.5%, Vertical 10.5% (in 12.5µm pixel size mode with 99µGy) | Similar/better. (Subject device performance is significantly higher than the predicate's stated 'more than 3.4%') |
Image bit depth | 16 bits | 16 bits | Identical |
Operating Principle | Laser / Photomultiplier Tube (PMT) Components: Photomultiplier 2" Diode, Laser 639nm/10mW Fiber coupled laser diode | Laser / Photomultiplier Tube (PMT) Components: Photomultiplier 2" Diode, Laser 639nm/10mW Fiber coupled laser diode | Identical. Note: While the components are identical, a new "Flying-Spot configuration (PCS technology)" is used, which was cleared in a predecessor device (K170733), suggesting equivalence in efficacy despite a change in the exact scanning mechanism. |
Supported Plate Sizes | Size 0 (22x35mm), 1 (24x40mm), 2 (31x41mm) | Size 0, 1, 2, 3 (27x54mm), 4 (57x76mm) | Similar. The predicate device uses smaller phosphor plates: Size 0, 1 and 2. The subject devices support these and add Size 3 and 4, which were available on a previous model (K170733), implying this expansion is also a previously cleared technology. This is presented as an enhancement rather than a deviation that would impact safety/effectiveness negatively. |
Data Transfer | Ethernet link | Ethernet link (all models); WLAN interface or removable storage (XPS07.2A1 only) | Similar. The View model offers additional flexibility. Risks associated with WLAN would be addressed by standards compliance (e.g., IEC 60601-1-2 and "Radio Frequency Wireless Technology in Medical Devices" guidance). |
Image Generation | Image assembled by imaging software (e.g., VisionX) | Image assembled within the image plate scanner (using same algorithm as K192743) | New. The raw image data is the same, and the algorithm used is the same as already cleared for the VisionX imaging software (K192743), suggesting this change does not impact safety or effectiveness. |
2. Sample size used for the test set and the data provenance:
- Not explicitly stated for performance testing. The document refers to non-clinical performance testing (MTF, DQE, noise power spectrum) in accordance with IEC 6220-1:2003, which would involve imaging phantoms or test objects.
- Data Provenance: Not specified, but given the manufacturer is German (DURR DENTAL SE), the non-clinical testing likely occurred in a controlled lab environment, presumably in Germany or where their R&D facilities are located. These tests are inherently "prospective" in the sense that they are conducted to characterize the specific device.
3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts for clinical studies:
- Not applicable. The submission states no clinical performance testing was required. For non-clinical tests like MTF/DQE, ground truth is established by the design of the test phantom and the known physical properties being measured.
4. Adjudication method for the test set (for clinical studies):
- Not applicable. No clinical studies were performed.
5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done:
- No. The document explicitly states: "Summary of clinical performance testing: Not required to establish substantial equivalence." Therefore, no MRMC study was performed.
6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done:
- The device itself is a standalone imaging acquisition and processing system. The performance metrics (MTF, DQE) are inherently standalone measurements of the device's image quality output.
- The ScanX Swift View 2.0 model has a "Stand-Alone-Mode" where it can operate without a connection to a computer, generate image data, and store it on a USB stick. This is a functional feature, not a separate performance study.
7. The type of ground truth used:
- For the non-clinical image quality performance metrics (MTF, DQE, noise power spectrum), the ground truth is established by physical standards and phantoms as defined by the IEC 6220-1:2003 standard. These involve known patterns and controlled radiation exposures to objectively measure the imaging system's capabilities.
8. The sample size for the training set:
- Not applicable. As this is a 510(k) for a hardware device (PSP scanner) and not an AI/ML algorithm requiring a training set in the typical sense, there is no mention of a "training set" for image processing algorithms. The image processing algorithms used within the device are stated to be "the same as cleared in K192743 for the imaging software VisionX," implying they are established and validated algorithms, not newly trained ones for this specific device.
9. How the ground truth for the training set was established:
- Not applicable, as there is no training set discussed for this device submission.
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