It could be a combination of -- orders in the pipeline mentioned in the October order PR -- the company not having completed the switch to other devices with some patients -- the company not even planning to switch to other devices with some patients
This is from the most recent 10Q, note 9:
“The Company may request that patients voluntarily return devices which were the subject of the settlement, but the Company is not doing so if the return of the equipment would interfere with the treatment of the patient.”