The device has not been designed to be manipulated manually. The handles of the device have been designed solely to direct the device.
The device must be permanently installed on a support (tripod, arm or stand) for use.
Likewise, the support must be handled with great caution to prevent the device from impacting the patient. Make sure that the support is securely mounted and that there is no risk of it falling and make also sure that the device has been placed correctly on the support, so that it does not pose any danger to any user or patient.