Retiro De Equipo (Recall) de Device Recall ARTISTE , ONCOR and PRIMUS digital accelerators with syngo RT Therapist v4.1 and 4.2 system;

Recall

58533

Class 2

Z-2243-2011

2011-03-31

2011-05-23

Terminated

United States

2012-03-30

USFDA

https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfres/res.cfm?id=99529

Siemens found a potential safety issue related to patient treatment with table offsets on syngo rt therapist (rtt) 4.1 and 4.2 which could result in dose being delivered to wrong location.

Siemens initiated an Urgent Medical Device Correction letter on March 31, 2011, to all affected customers. The letter identified the product, the problem, and the action to be taken by the customer. Customers were instructed to: use only relataive table setup with all planned table values '0' if applicable. In cases where the treatment plan contains at least one table parameter other than '0' to consider the following: Use only one PVG plus resulting offset per fraction. Once an offset has been applied do not use 'apply offset' at RTT for any further offset. Select the PVG and treatment beams in the same auto-sequence. In case this is not possible, the table position for each treatment beam, in the fraction, needs to be verified separately (especially for treatments with beams having different table posiitons. If an in-session resumption or individual download of beams has to be performed, make sure that the treatment table is in the correct position. In order to prevent any unintended table movement select manual table movement for all directions in the syngo RT Therapist service UI. Scenario 2 - Manual change of table posiiton followed by a PVG calculated offset. Always deliver the PVG's at the planned table position. Avoid manual change of table posiiton prior to applicaiton of PVG. Select the PVG and treatment beams in the same auto-sequence. In case this is not possible, the table position for each treatment beam, in the fraction, need to be verified separately (especially for treatments with beams having different table positions). If an in-session resumption or individual download of beams has to be performed, make sure that the treatment table is in the correct position. In order to prevent any unintended table movement select manual table movement for all directions in the syngo RT Therapist service UI. Customers were informed that a software update would be provided as soon as possible. Customers were asked to include the Customer Sa