PreXion 3D Excelsior

K181983 · Prexion Corporation · OAS · Aug 17, 2018 · Radiology

Device Facts

• Record ID: K181983
• Device Name: PreXion 3D Excelsior
• Applicant: Prexion Corporation
• Product Code: OAS · Radiology
• Decision Date: Aug 17, 2018
• Decision: SESE
• Submission Type: Special
• Regulation: 21 CFR 892.1750
• Device Class: Class 2
• Attributes: Pediatric

Intended Use

PreXion 3D Excelsior is intended to produce two dimensional digital panoramic and cephalometric images, and three dimensional digital X-ray images of the dental (oral), maxillofacial, and ENT (Ear, Nose and Throat) region at the direction of healthcare professionals as diagnostic support for adult and pediatric patients. Cephalometric imaging also includes the hand wrist to obtain carpus images for growth and maturity assessment.

Device Story

PreXion 3D Excelsior is a dental cone-beam computed tomography (CBCT) system; captures X-ray data via flat panel detector; processes data on console software to reconstruct 2D panoramic, cephalometric, and 3D images. Operated by healthcare professionals in clinical settings. New features include CT-panoramic mode (reconstructs panoramic images from CT raw data) and airway measurement function (color-codes airway inner walls; calculates volume/cross-sectional area). Output viewed on console for diagnostic support; aids clinical decision-making in dental/maxillofacial/ENT treatment planning.

Clinical Evidence

Bench testing only. Performance verified through conformance to recognized standards (ANSI/AAMI ES60601-1, IEC 60601-1-2/3/6, IEC 62366, IEC 62304, IEC 60601-2-63, IEC 61223-3-4/5, IEC 60825-1, ISO 14971, ISO 10993-1/5/10, NEMA PS 3.1-3.20). 3D imaging performance assessed via MTF in x, y, and z orientations. Software verified and validated via bench tests and user evaluations.

Technological Characteristics

Dental CBCT system; 60-110kV tube voltage; 1-6mA tube current; 0.3mm focal spot. Flat panel detector (125μm-140μm pixel size). Modes: CT, Panoramic, Cephalometric. Software-based image reconstruction and analysis. Connectivity via NEMA PS 3.1-3.20 (DICOM).

Indications for Use

Indicated for adult and pediatric patients requiring 2D digital panoramic, cephalometric, or 3D digital X-ray imaging of dental, maxillofacial, and ENT regions. Cephalometric imaging includes hand/wrist carpus images for growth/maturity assessment.

Regulatory Classification

Identification

A computed tomography x-ray system is a diagnostic x-ray system intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from the same axial plane taken at different angles. This generic type of device may include signal analysis and display equipment, patient and equipment supports, component parts, and accessories.

Predicate Devices

• PreXion 3D Excelsior (K173878)

Submission Summary (Full Text)

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August 17, 2018

PreXion Corporation % Mr. Katsumi Hayashi Director, Quality Assurance and Regulatory Division 1-14-1 Kandasuda-cho, Chiyoda-ku, Tokyo 101-0041 JAPAN

Re: K181983

Trade/Device Name: PreXion 3D Excelsior Regulation Number: 21 CFR 892.1750 Regulation Name: Computed tomography x-ray system Regulatory Class: II Product Code: OAS Dated: July 23, 2018 Received: July 25, 2018

Dear Mr. Hayashi:

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. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database located at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmp/pmn.cfm identifies combination product submissions. 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. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.

If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to 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

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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); medical device reporting of medical device-related adverse events) (21 CFR 803) for devices or postmarketing safety reporting (21 CFR 4, Subpart B) for combination products (see https://www.fda.gov/CombinationProducts/GuidanceRegulatoryInformation/ucm597488.htm); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR 1000-1050.

Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR Part 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to http://www.fda.gov/MedicalDevices/Safety/ReportaProblem/default.htm.

For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/) and CDRH Learn (http://www.fda.gov/Training/CDRHLearn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (http://www.fda.gov/DICE) for more information or contact DICE by email ([e-mail]) or phone [phone] or 301-796-7100).

Sincerely.

Hsl 2. Nils

Robert Ochs, Ph.D. Director Division of Radiological Health Office of In Vitro Diagnostics and Radiological Health Center for Devices and Radiological Health

Enclosure

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#### DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration

# Indications for Use

Form Approved: OMB No. 0910-0120 Expiration Date: 06/30/2020 See PRA Statement below.

510(k) Number (if known)

K181983

Device Name PreXion 3D Excelsior

#### Indications for Use (Describe)

PreXion3D Excelsior is intended to produce two dimensional digital panoramic and cephalometric images, and three dimensional digital X-ray images of the dental (oral), maxillofacial, and ENT (Ear, Nose and Throat) region at the direction of healthcare professionals as diagnostic support for adult and pediatric patients. Cephalometric imaging also includes the hand wrist to obtain carpus images for growth and maturity assessment.

(Note: We have added technical term "dental(oral)" to clarify Indications for Use. We believe that is same definition of Indications for Use between predicate device and subject device.)

Type of Use (Select one or both, as applicable)

> Prescription Use (Part 21 CFR 801 Subpart D)

Over-The-Counter Use (21 CFR 801 Subpart C)

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# 510(k) Summary

This summary of 510(k) safety and effectiveness information is submitted in accordance with the requirements of the Safe Medical Devices Act of 1990 and 21 CFR 807.92.

510(k) Number:

# 6.1 Applicant Information

| Date Prepared: | July 23th, 2018 |
|---------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
| Company Name and Address: | PreXion Corporation<br>1-14-1 Kandasuda-cho, Chiyoda-ku<br>Tokyo, 101-0041<br>Japan |
| Contact Person: | Mr. Katsumi Hayashi<br>Director, Quality Assurance and Regulatory Division<br>Phone: [phone]<br>FAX: [phone]<br>Email: [e-mail] |

## 6.2 Device Information

| Type of 510(k) Submission | Special |
|---------------------------|--------------------------------------|
| Device Type: | Dental Cone-beam Computed Tomography |
| Regulation Description: | Computed Tomography X-Ray System |
| Review Panel: | Radiology |
| Regulation Number: | 21 CFR 892.1750 |
| Product Code: | OAS |
| Device Class: | II |
| Device Name: | PreXion3D Excelsior |

## 6.3 Predicate Device Information

The legally marketed devices to which substantial equivalence is being claimed are:

| 510(k) Number: | K173878 |
|--------------------|----------------------|
| Applicant: | PreXion Corporation |
| Device Name: | PreXion 3D Excelsior |
| Regulation Number: | 21 CFR 892.1750 |
| Product Code: | OAS |
| Device Class: | II |

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## 6.4 Device Description

PreXion 3D Excelsior consists of a scanner, which is used for generating X-ray and detecting image data, and a Console, which is used for operating the scanner and managing the data. The scan data acquired by the scanner will be transferred to the Console. PreXion3D Excelsior Image Analysis System will then perform the image analysis (2D/3D) or image edition (creating cross-section diagram, etc.), and output the image to a printer.

During scanning, X-rays are generated from the x-ray tube head mounted in the arm of the scanner and the x-rays passing through a patient are then detected by the flat panel detector of the scanner under the control of the firmware inside and the console software installed on the qualified Computer. The detected x-ray absorption data is processed by the console software to reconstruct the diagnostic images. The PreXion3D Excelsior has three operation modes, CT scan, Panoramic scan and Cephalometric exposure.

## Summary of predicate device modifications

Predicate device has Panoramic scan mode, but Subject device is added CT-panoramic mode besides Panoramic scan mode. CT-panoramic mode is a function for CT imaging in which a panoramic image is produced by performing panoramic image reconstruction using the raw-data from CT scan. The user can observe CT image and CT-panoramic image at the same time.

Furthermore, Subject device is added Airway measurement function, which gives inner wall of airway distinquish color, and it calculates volume and cross section area.

## 6.5 Intended Use/Indications for Use

PreXion 3D Excelsior is intended to produce two dimensional digital panoramic and cephalometric images, and three dimensional digital x-ray images of the dental(oral), maxillofacial, and ENT (Ear, Nose and Throat) region at the direction of healthcare professionals as diagnostic support for adult and pediatric patients.

Cephalometric imaging also includes the hand and wrist to obtain carpus images for growth and maturity assessment.

## 6.6 Comparison to the Predicate Device

The subject device compares to the legally marketed devices as follows:

| Device | Predicate Device | Modified Device | |
|--------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------|
| | PreXion3D Excelsior (K17387) | PreXion3D Excelsior | |
| Intended<br>Use/Indications for Use | PreXion3D Excelsior is intended<br>to produce two dimensional<br>digital panoramic and<br>cephalometric images, and three<br>dimensional digital x-ray images<br>of the maxillofacial, and ENT<br>(Ear, Nose and Throat) region at<br>the direction of healthcare<br>professionals as diagnostic<br>support for adult and pediatric<br>patients. | PreXion3D Excelsior is intended to<br>produce two dimensional digital<br>panoramic and cephalometric<br>images, and three dimensional digital<br>x-ray images of the dental(oral),<br>maxillofacial, and ENT (Ear, Nose<br>and Throat) region at the direction of<br>healthcare professionals as<br>diagnostic support for adult and<br>pediatric patients.<br>Cephalometric imaging also includes | |
| | | | |
| | | Cephalometric imaging also<br>includes the hand and wrist to<br>obtain carpus images for growth<br>and maturity assessment | the hand and wrist to obtain carpus<br>images for growth and maturity<br>assessment |
| X-ray<br>Generation<br>Device | Tube<br>Voltage | 60-110KV | 60-110KV |
| | Pulse<br>Exposure<br>function | Yes | Yes |
| | Tube<br>Current | 1-6mA | 1-6mA |
| | Focal<br>Spot Size | 0.3mm | 0.3mm |
| X-ray<br>Image<br>Capturing<br>Device | Detector | 125μm x 125μm, 125μm<br>x 250μm (CT)<br>125μm x 125μm (Panoramic)<br>140 μm x 140μm (Ceph) | 125μm x 125μm, 125μm<br>x 250μm (CT)<br>125μm x 125μm (Panoramic)<br>140 μm x 140μm (Ceph) |
| | Pixel<br>Number | 1280x1024 (CT)<br>128x1280 (Panoramic)<br>2112x1754 (Cephalometric) | 1280x1024 (CT)<br>128x1280 (Panoramic)<br>2112x1754 (Cephalometric) |
| | Size of<br>Area<br>Receiving<br>X-ray | 160mm x 128mm (CT)<br>160mm x 12.5mm (Panoramic)<br>295.68 x 245.56mm (Ceph) | 160mm x 128mm (CT)<br>160mm x 12.5mm (Panoramic)<br>295.68 x 245.56mm (Ceph) |
| | Number of<br>Bits | 16bits (CT, Panorama)<br>14bits (Ceph) | 16bits (CT, Panorama)<br>14bits (Ceph) |
| Scanner | SID/SOD | 700mm/ 470mm (CT,Panoramic)<br>1735mm / 1500mm (Ceph) | 700mm/ 470mm (CT, Panoramic)<br>1735mm / 1500mm (Ceph) |
| | Dimension<br>(WxDxH) | 930 mm x 1230 mm x<br>2220 mm (CT, Panoramic)<br>1816 mm x 1230 mm x<br>2220 mm (with Ceph) | 930 mm x 1230 mm x<br>2220 mm (CT, Panoramic)<br>1816 mm x 1230 mm x<br>2220 mm (with Ceph) |
| | Weight | 165 kg (CT, Panoramic)<br>200kg (Ceph) | 165 kg (CT, Panoramic)<br>200kg (Ceph) |
| Imaging Mode | | CT scan, Panoramic scan,<br>Cephalometric radiography | CT scan, Panoramic scan,<br>Cephalometric radiography |
| Panoramic Scan<br>Performance (Scan<br>Time) | 8-16sec | 8-16sec | |
| Cephalometric<br>Radiography (Scan<br>Time) | 0.5-0.8 sec | 0.5-0.8 sec | |
| Viewer Software (Image<br>Analysis System<br>Software) | Display High-resolution 2D and<br>3D Images Function | Display High-resolution 2D and 3D<br>Images Function | |
| | Image Processing Function | Image Processing Function | |
| | Image Operation Function | Image Operation Function<br>Including Airway measurement | |
| | Output Function | Output Function | |
| Console Software<br>System Settings | CT Scan | CT Scan<br>including CT-Panoramic mode | |

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Modified device is added CT-Panoramic mode and Airway measurement function.

CT-panoramic mode is a function for CT imaging in which a panoramic image is produced by performing panoramic image reconstruction using the raw-data from CT scan. The user can observe CT image and CT-panoramic image at the same time.

Airway measurement function gives inner wall of airway distinguish color, and it calculates volume and cross section area.

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# 6.7 Non-Clinical Performance Data

The subject device has demonstrated conformance to non-clinical performance requirements through evaluation and testing in accordance with the following harmonized standards:

ANSI/AAMI ES60601-1 IEC 60601-1-2 IEC 60601-1-3 IEC 60601-1-6 IEC 62366 IEC 62304 IEC 60601-2-63 IEC 61223-3-4 IEC 61223-3-5 IEC 60825-1 ISO 14971 NEMA PS 3.1 - 3.20 ISO 10993-1 ISO 10993-5 ISO 10993-10

In addition to the conformance with the above recognized standards, the following testing and nonclinical considerations were preformed:

- . Testing for 3D imaging performance to assess MTF for three image orientations (x, y, z) for the applicable 3D modes of device operation.
- . Non-clinical considerations according to FDA Guidance "Guidance for the Submission of 510(k)'s for Solid State X-ray Imaging Devices"

Results of all non-clinical testing and non-clinical considerations support the safety and effectiveness of the subject device.

## 6.8 Brief description of software quality activities

Software quality activities for subject device is according to above standards. Based on risk management and usability evaluation, the software is verified and validated including bench tests and user evaluations. Via these processes, software quality activities for subject device comply with software moderate level concern.

## 6.9 Conclusions

The subject device clarified the Intended Use/Indications for Use, but both Intended Use/Indications for Use are same meaning between predicate and subject devices. In Viewer Software, the subject device has a different function from those of the predicate device. But, this is just additional supplemental function of the image processing functions. In Console Software, the subject device has different function from those of the predicate device. But, this is just additional supplemental function of the CT Scan mode.

Based on the above information and all data provided in this submission, the comparison of Intended Uses/Indications for Use and technological characteristics that the subject device is substantially equivalent to the predicate device identified in this submission.