K Number
K991600
Device Name
SOMATOM PLUS 4 WITH SLIDING GANTRY OPTION
Manufacturer
Date Cleared
1999-06-09

(30 days)

Product Code
Regulation Number
892.1750
AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP Authorized
Intended Use
The SOMATOM Plus 4 with Sliding Gantry Option is intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from either the same axial plane taken at different angels or spiral planes* taken at different angles. (*spiral planes: the axial planes resulted from the continuous rotation of detectors and x-ray tube, and the simultaneous movement of the sliding gantry.)
Device Description
The SOMATOM Plus 4 with Sliding Gantry Option is a whole body X-ray computed tomography scanner that features a continuously rotating tube-detector system and functions according to the fan beam principle. The Sliding Gantry Option integrates the function of precise scan control driven horizontal movement, which is usually a function of the dedicated CT-table, into the CT gantry itself. This is achieved by mounting the gantry on a dedicated rail system and by having a scan control system that moves the gantry relative to the table instead of moving the table relative to the gantry.
More Information

Not Found

No
The summary describes a standard CT scanner with a mechanical innovation (sliding gantry) and does not mention any AI/ML components or image processing capabilities beyond basic reconstruction.

No
Explanation: The device is described as an X-ray computed tomography scanner intended to produce cross-sectional images of the body for diagnostic purposes, not for treating diseases or conditions.

Yes

Explanation: The device is described as an X-ray computed tomography scanner that produces cross-sectional images of the body for reconstruction. The ability to generate images of the body for reconstruction indicates its use as a tool for diagnosing medical conditions.

No

The device description clearly states it is a whole body X-ray computed tomography scanner, which is a hardware device. The "Sliding Gantry Option" is also a hardware component.

Based on the provided information, this device is not an IVD (In Vitro Diagnostic).

Here's why:

  • Intended Use: The intended use is to produce cross-sectional images of the body using X-ray transmission data. This is a diagnostic imaging device, not a device used to examine specimens derived from the human body (like blood, urine, tissue, etc.) to provide information for diagnosis, monitoring, or treatment.
  • Device Description: The description confirms it's a whole body X-ray computed tomography scanner. This is consistent with an imaging device, not an IVD.
  • Lack of IVD Characteristics: There is no mention of analyzing biological samples, reagents, or any of the typical components or processes associated with in vitro diagnostics.

Therefore, the SOMATOM Plus 4 with Sliding Gantry Option is a medical imaging device, not an IVD.

N/A

Intended Use / Indications for Use

The SOMATOM Plus 4 with Sliding Gantry Option is intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from either the same axial plane taken at different angels or spiral planes* taken at different angles. (*Spiral planes: the axial planes resulted from the continuous rotation of detectors and x-ray tube and the simultaneous movement of the sliding gantry).

Product codes

90 JAK

Device Description

The SOMATOM Plus 4 with Sliding Gantry Option is a whole body X-ray computed tomography scanner that features a continuously rotating tube-detector system and functions according to the fan beam principle. The Sliding Gantry Option integrates the function of precise scan control driven horizontal movement, which is usually a function of the dedicated CT-table, into the CT gantry itself. This is achieved by mounting the gantry on a dedicated rail system and by having a scan control system that moves the gantry relative to the table instead of moving the table relative to the gantry.

Mentions image processing

Not Found

Mentions AI, DNN, or ML

Not Found

Input Imaging Modality

x-ray transmission data

Anatomical Site

body

Indicated Patient Age Range

Not Found

Intended User / Care Setting

Not Found

Description of the training set, sample size, data source, and annotation protocol

Not Found

Description of the test set, sample size, data source, and annotation protocol

Not Found

Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)

Not Found

Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)

Not Found

Predicate Device(s)

K990491, K941546

Reference Device(s)

Not Found

Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc)

Not Found

§ 892.1750 Computed tomography x-ray system.

(a)
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.(b)
Classification. Class II.

0

SIEMENS

9 1999 JUN

Attachment 1

K991600

Summary of Safety and Effectiveness

This summary of 510(k)-safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.

I. General Information

Device Name:SOMATOM Plus 4 with Sliding Gantry Option
Classification Name:§ 892.1750:
Computed tomography X-ray system
Propriety Trade Name:SOMATOM Plus 4 with Sliding Gantry Option
Classification:Class II
Performance Standards:21 CFR Subchapter J, Federal
Diagnostic X-ray Equipment Standard
Establishment Regist. Number:2240869
Address:Siemens Medical Systems, Inc.
186 Wood Avenue South
Iselin, NJ 08830
Contact Person:Kathleen M. Rutherford
Manager, Regulatory Submissions
(732) 321-4779

1

II. Safety and Effectiveness Information Supporting the Substantial Equivalence Determination

Device Description:

The SOMATOM Plus 4 with Sliding Gantry Option is a whole body X-ray computed tomography scanner that features a continuously rotating tube-detector system and functions according to the fan beam principle. The Sliding Gantry Option integrates the function of precise scan control driven horizontal movement, which is usually a function of the dedicated CT-table, into the CT gantry itself. This is achieved by mounting the gantry on a dedicated rail system and by having a scan control system that moves the gantry relative to the table instead of moving the table relative to the gantry.

Intended Use:

The SOMATOM Plus 4 with Sliding Gantry Option is intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from either the same axial plane taken at different angels or spiral planes* taken at different angles. (*Spiral planes: the axial planes resulted from the continuous rotation of detectors and x-ray tube and the simultaneous movement of the sliding gantry).

Technological Characteristics:

The SOMATOM Plus 4 with Sliding Gantry Option is a whole body X-ray computed tomography scanner that features a continuously rotating tube-detector system and functions according to the fan beam principle. The system is based on the existing SOMATOM PLUS 4 system. The Sliding Gantry functionality will be marketed as an optional package for the existing SOMATOM Plus 4 system and will also be offered as an upgrade to already installed systems. The system operates with SOMARIS/4 software.

General Safety and Effectiveness Concerns:

The SOMATOM Plus 4 CT Sliding Gantry subject to the Federal Diagnostic Equipment Performance Standard and applicable regulations of 21CFR § 1020.30 and § 1020.33 are certified to meet those requirements; and an initial report as per 21 CFR § 1002.10 has been filed at the Center for Devices and Radiological Health (CDRH) (Reference no. 9412312-06 on March 25, 1999). To minimize electrical, mechanical, and radiation hazards, Siemens adheres to recognized and established industry practice. The SOMATOM Plus 4 CT Sliding Gantry is designed to meet the ELECTRICAL AND MECHANICAL SAFETY STANDARD IEC 601-1 and UL 187 X-RAY EQUIPMENT STANDARD FOR SAFETY.

Substantial Equivalence:

The SOMATOM Plus 4 CT Sliding Gantry Option is substantially equivalent to the Angio-CT MIYABI (described in K990491 cleared April 5, 1999) and SOMATOM Project 059 (described in K941546 cleared September 10, 1994) in commercial distribution.

Ketles Rutherford 5/7/99
Signature Date

2

DEPARTMENT OF HEALTH & HUMAN SERVICES

Image /page/2/Picture/1 description: The image shows a circular seal with the words "DEPARTMENT OF HEALTH & HUMAN SERVICES-USA" written around the edge. Inside the circle is a stylized image of an eagle. The eagle is depicted with its wings spread, and its head is turned to the left.

Public Health Service

Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850

d 1899 JUN

Alicia Bustos-Juergensen Technical Specialist Siemens Corporation 186 Wood Avenue South Iselin, New Jersey 08830 Re:

K991600 SOMATOM Plus 4 with Sliding Gantry Option CT System Dated: May 7, 1999 Received: May 10, 1999 Regulatory Class: II 21 CFR 892.1750/Procode: 90 JAK

Dear Ms. Bustos-Juergensen:

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 redassified 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.

If your device is classified (see above) into either 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 requlation entitled. "Misbranding by reference to premarket notification"(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,
Dan Letizia

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

3

SIEMENS

Attachment 2

Indication for use

K991600

Device Name:

510(k) Number (if known):

Sliding Gantry Option

Indication for use:

The SOMATOM Plus 4 with Sliding Gantry Option is intended to produce cross-sectional images of the body by computer reconstruction of x-ray transmission data from either the same axial plane taken at different angels or spiral planes* taken at different angles. (*spiral planes: the axial planes resulted from the continuous rotation of detectors and x-ray tube, and the simultaneous movement of the sliding gantry.)

Ra-Q. Pacey

(Division Sign-Off) Division of Reproductive, Abdominal, ENT, and Radiological Devices 510(k) Number _

Prescription Use
(Per 21 CFR 801.109) ✓