Digital Linear Accelerators of type ARTISTE, ONCOR and PRIMUS with Automatic Sequenced Treatment Delivery Option 의 리콜

Recall

RC-2014-RN-00614-1

Class II

2014-06-05

Australia

DHTGA

https://apps.tga.gov.au/Prod/sara/arn-detail.aspx?k=RC-2014-RN-00614-1

Siemens became aware of an incident where a patient was pinched between the moving gantry and the tabletop during an auto-sequenced treatment. in this case, an automatic gantry movement during an auto-sequenced treatment led to the collision because: - the auto-sequenced treatment has been created including beams with table angles. and - no dry run has been performed. and - the therapist did not monitor the patient during treatment delivery.

Siemens is providing preventative work around instructions in its letter to customers, relating to beam placement, utilisation of dry runs after each change to the treatment plan, treatment interruption during patient repositioning, user care in field entries, patient monitoring and use of an optional inbuilt collision avoidance system such as ‘OPTIGARD’ if available. Additionally, therapist-identified potential collision between the gantry and the patient during use is preventable by the therapist by three separate button mechanisms. Siemens is also investigating a new method of determining whether there is a significant probability of collision between the LINAC gantry and the patient or the table.