- Iontophoresis device made by Acclarent. There are other iontophoresis devices in the market (Medtronic and Otomed), but none adapted for simultaneous bilateral ear canal usage that works within 10 minutes. Iontophoresis works by applying a gentle electric current in order to actively move charged drug molecules into the skin. In this particular case, positively charged lidocaine and epinephrine.
- Optimal anesthetic solution for iontophoresis. Dubbed "EMGIM", it contains 1:12,000 epinephrine with 3.3% lidocaine hydrochloride and 0.7% sodium bicarbonate. The solution is prepared fresh prior to use by combining 10 mL of 4% lidocaine hydrochloride with 1 mL of 1:1,000 epinephrine. After mixing the lidocaine and epinephrine, 1 mL of 8.4% sodium bicarbonate is added.
- Ear tube delivery device and placement system. Typically, a competent ENT can place an ear tube in about 10-20 seconds. However, when dealing with kids who may potentially move unexpectedly and operating within a very small ear canal space, a faster and more reliable way of placing a tube was required. Hence, this new device. [link]
Sounds great as sedation is something to be avoided if at all possible. However, there is one problem... the Acclarent iontophoresis device is NOT yet FDA approved contrary to what the report states (direct communication with Acclarent executives October 1, 2013). Hopefully in 2014. As such, beyond a research setting, this in-office technique is not yet available for use in the United States.
As an aside, there are FDA-approved iontophoresis devices for use in pediatric head and neck surgical procedures mainly for sub-cutaneous mass excisions and abscess incision and drainage. Check out Phoresor for such applications using lidocaine infused electrodes. It's even sold on Amazon.
Otologic Iontophoresis: A No-Papoose Technique. Annals of Otology. Rhinology & Laryngology 122(8):487-491. Aug 2013.
In-Office Tympanostomy Tube Placement Under Local Anesthesia Using a Novel Tube Delivery Device. Triological Meeting Poster. Dec 2012.
Iontophoresis: a needle-free, electrical system of local anesthesia delivery for pediatric surgical office procedures. J Pediatr Surg. 1999 Jun;34(6):946-9.