Siemens Medical Solutions, Oncology Care Systems, 4040 Nelson Ave., Concord, CA 94510: ARTISTE and ONCOR Digital Linear Accelerators configured with the 160 leaf Multi-Leaf Collimator (MLC) and MEVATRON and PRIMUS Digital Linear Accelerators configured with the High Performance Defining Collimator (HPD); Product is manufactured by Kemnath, Germany-Siemens AG OCS and Siemens AG, Erlangen, Germany-Siemens AG OCS and distributed by Siemens Medical Solutions, Oncology Care Systems, Concord, CA; Intended to deliver x-ray radiation for therapeutic treatment of cancer. ARTISTE with 160 MLC, Part No.8139789, ONCOR AG with 160 MLC, Part No.5863472 ONCOR Impression Plus with 160 MLC, Part No.5857912, ONCOR Expression with 160 MLC, Part No.7360204, ONCOR Expression with 160 MLC, Part No.7360717, PRIMUS HI with HPD, Part No. 4504200, MEVATRON M2 / PRIMUS Mid-Energy / HPD, Part No.1940035, MEVATRON 6323-2 / HPD, Part No.19244500, MEVATRON K2 / HPD, Part No.1940753, MEVATRON PRIMART / HPD, Part No.5500371, MEVATRON 77 / HPD, Part No.5659503, MEVATRON M 7400 / 7440 (MEX) / HPD, Part No.5672977, MEVATRON M 6700 (MX) / HPD, Part No.5693908, MEVATRON M 6730 / HPD, Part No.5694005, MEVATRON M 7140 / HPD, Part No.5694104, MEVATRON M 7400 / HPD, Part No.5694153, MEVATRON M 7445 / HPD (MEX), Part No.5694203, MEVATRON K 7467 / HPD, Part No.5694252, MEVATRON K 7767 / HPD, Part No.5694302, MEVATRON K 8067 / HPD, Part No.5694401, MEVATRON M 6300 (MX) / HPD, Part No.8317000, MEVATRON M 6730/6740 (MEX) / HPD, Part No.8319758, MEVATRON MD (MD, MDX) / HPD, Part No.8319808, MEVATRON KD / HPD, Part No.8319857, MEVATRON MDX / HPD, Part No.8496200, MEVATRON KD-2 / HPD, Part No.8515520, MEVATRON M3 6300 / HPD, Part No.9401316, MEVATRON M2 6700 / HPD, Part No.9401407, MEVATRON M2 6740 / HPD, Part No.9401506, MEVATRON KDS / HPD, Part No.941522, MEVATRON MD-2 / HPD, Part No.9401654, MEVATRON MDX 2 / HPD, Part No.9401746, MEVATRON KDS-2 / HPD, Part No.9411588, MEVATRON KD-2 / HPD, Part No.9822685, MEVATRON KDS-2 / HPD, Part No.9822693

Recall number

Z-0907-2011

Recalling firm

Siemens Medical Solutions, Oncology Care Systems, 4040 Nelson Ave., Concord, CA 94510

Product

ARTISTE and ONCOR Digital Linear Accelerators configured with the 160 leaf Multi-Leaf Collimator (MLC) and MEVATRON and PRIMUS Digital Linear Accelerators configured with the High Performance Defining Collimator (HPD); Product is manufactured by Kemnath, Germany-Siemens AG OCS and Siemens AG, Erlangen, Germany-Siemens AG OCS and distributed by Siemens Medical Solutions, Oncology Care Systems, Concord, CA; Intended to deliver x-ray radiation for therapeutic treatment of cancer. ARTISTE with 160 MLC, Part No.8139789, ONCOR AG with 160 MLC, Part No.5863472 ONCOR Impression Plus with 160 MLC, Part No.5857912, ONCOR Expression with 160 MLC, Part No.7360204, ONCOR Expression with 160 MLC, Part No.7360717, PRIMUS HI with HPD, Part No. 4504200, MEVATRON M2 / PRIMUS Mid-Energy / HPD, Part No.1940035, MEVATRON 6323-2 / HPD, Part No.19244500, MEVATRON K2 / HPD, Part No.1940753, MEVATRON PRIMART / HPD, Part No.5500371, MEVATRON 77 / HPD, Part No.5659503, MEVATRON M 7400 / 7440 (MEX) / HPD, Part No.5672977, MEVATRON M 6700 (MX) / HPD, Part No.5693908, MEVATRON M 6730 / HPD, Part No.5694005, MEVATRON M 7140 / HPD, Part No.5694104, MEVATRON M 7400 / HPD, Part No.5694153, MEVATRON M 7445 / HPD (MEX), Part No.5694203, MEVATRON K 7467 / HPD, Part No.5694252, MEVATRON K 7767 / HPD, Part No.5694302, MEVATRON K 8067 / HPD, Part No.5694401, MEVATRON M 6300 (MX) / HPD, Part No.8317000, MEVATRON M 6730/6740 (MEX) / HPD, Part No.8319758, MEVATRON MD (MD, MDX) / HPD, Part No.8319808, MEVATRON KD / HPD, Part No.8319857, MEVATRON MDX / HPD, Part No.8496200, MEVATRON KD-2 / HPD, Part No.8515520, MEVATRON M3 6300 / HPD, Part No.9401316, MEVATRON M2 6700 / HPD, Part No.9401407, MEVATRON M2 6740 / HPD, Part No.9401506, MEVATRON KDS / HPD, Part No.941522, MEVATRON MD-2 / HPD, Part No.9401654, MEVATRON MDX 2 / HPD, Part No.9401746, MEVATRON KDS-2 / HPD, Part No.9411588, MEVATRON KD-2 / HPD, Part No.9822685, MEVATRON KDS-2 / HPD, Part No.9822693

Status

Terminated

Initiated

2010-08-13

Posted

2011-01-18

Terminated

2012-01-31

Reason

The potential safety issue with the 160MLC or the HPD collimator of mechanical noises and/or sticking of the collimator when rotating the collimator. The potential for mistreatment to a patient should the collimator not be aligned correctly if the bearings are damaged.

Root cause

Pending

Action

Urgent: Medical Device Correction Safety Advisory Notice letters were sent by certified mail commencing August 3, 2010. The letter described the issue and when it occurs, the measures users could take, and how Siemens would address the issue. It is recommended that customers include a check of the field alignment at 90 and 270 degrees gantry angle in the daily check prior to start of patient treatments. A copy of the Safety Advisory Notice should be included in the Owner's Manual and questions should be directed towards the local Siemens Service Engineer or Application Specialist.

Quantity

1167

Distribution

Worldwide Distribution.

Lot, serial or model codes

All units of these models.

510(k) numbers

not on file

PMA numbers

not on file

Product code

IYE

Firm FEI

2937457

Firm city

Concord

Firm state

CA

Firm country

not on file

Cite as

FDA Medical Device Recalls (openFDA) (U.S. Food and Drug Administration (openFDA)), device-recall-0001-of-0001.json.zip, sha256 b87518bfe2e8, published 2026-09-28

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