Pediatric Adeno-Tonsillar Hypertrophy Treatment Post-Approval Study

实验性的：Enlarged tonsil(s) and/or adenoid mass will be reduced by ENTire IRE System.

设备：Irreversible Electroporation

The bi-polar IRE System locally applies short, high-voltage (HV) pulses, increasing the permeability of tissue cells, creating non-thermal irreversible electroporation (NTIRE). The energy is transferred via bipolar forceps handpiece causing irreversible cell membrane perforation and apoptosis resulting in tissue reduction. The clinical effect is anticipated within 2 to 4 weeks post-treatment.

Number of Participants With Device- or Procedure-Related Adverse Events (Bleeding, Readmission, Dehydration, or Emergency Department Visit)

Evaluation of the following device and/or procedure-related events: bleeding, readmission, dehydration and emergency department visits.

Time From Treatment to First Wong-Baker FACES Pain Scale Score of 2 or Below

For each participant, the number of days from treatment until the first daily pain score of 2 or below on the Wong-Baker FACES® Pain Scale. Pain is assessed after treatment and then daily for the first 7 days post-procedure. The scale ranges from 0 ("No hurt") to 10 ("Hurts worst"). Minimum value is 0 and maximum value is 10; higher scores indicate more pain (a worse outcome).

Change From Baseline in OSA-18 Total Score at 3 Months

The Obstructive Sleep Apnea-18 (OSA-18) questionnaire is completed by the parent or caregiver at baseline and at 3 months post treatment. The outcome is the change in OSA-18 total score from baseline to 3 months. The questionnaire has 18 questions, each rated from 1 ("None of the time") to 7 ("All of the time"). The total score ranges from 18 (minimum) to 126 (maximum); higher scores indicate more severe symptoms and greater impairment (a worse outcome). No formal hypothesis will be tested.

Change From Baseline in OSA-18 Total Score at 6 Months

The Obstructive Sleep Apnea-18 (OSA-18) questionnaire is completed by the parent or caregiver at baseline and at 6 months post treatment. The outcome is the change in OSA-18 total score from baseline to 6 months. The questionnaire has 18 questions, each rated from 1 ("None of the time") to 7 ("All of the time"). The total score ranges from 18 (minimum) to 126 (maximum); higher scores indicate more severe symptoms and greater impairment (a worse outcome). No formal hypothesis will be tested.