09 Sep SIDE BY SIDE VIEW OF AXONICS AND MEDTRONIC COMPONENTS TO HELP COMPARE CHOICES FOR SNM
This photo shows the components of the 2 SNM rechargeable systems. The Axonics system is on the right side and the Medtronic Interstim Micro system is on the left side. Please note there is one lead shown in the above photo. It is a Medtronic lead from several years ago. I did not have an Axonics lead or newly approved Medtronic lead available for this picture but the lead length& width from both brands are very similar with all leads now full body MRI conditional.
Starting from the top and moving down it should be noted that only 1 Axonics item (plate for the recharge puck) will need to be plugged in to allow recharge of the IPG while 3 items need to be plugged in for the Medtronic Interstim Micro system to keep the recharge of the IPG, receiver and verify remote usable. No items need to be continuously plugged in once charged but the number of cords to manage is 3X more for Medtronic. Please note the size difference between the IPG chargers to the right of both systems. The Axonics puck visually looks 50% smaller in size (no exact measurements performed) and the weight as taken at my office is half (0.4 versus 0.8 pounds).
The titanium IPGs about halfway down the photo demonstrate that the Medtronic battery (47X17X5mm) is slightly smaller in size compared to the Axonics battery (42X 22X6mm).
Towards the left of both systems note the patient management utilized. Axonics uses the small green key-fob remote operated with one hand in proximity to the IPG while the Medtronic Interstim systems (both Micro and Recharge Free) require using a receiver that needs to connect to the IPG with direct placement on the buttock followed by navigating a Samsung Galaxy remote. Once again, these latter items need to be kept charged with cords and plugs unlike the Axonics key-fob remote.
Both management systems were weighed with the Axonics single item coming in at 1.1 ounce while the 5-piece Medtronic option was 14.2 ounces (receiver 2.0 oz, smartphone 5.1 oz, each charger 1.9 oz (3.8 oz) and carrying case 3.2 oz). Overall the axonics solitary item for control of the system is 13X lighter.
Lastly, the bottom section shows the belts which hold the recharger devices for the respective IPGs. These are both the larger sizes from both brands. The MDT belt appears to be almost double the width of the Axonics belt at its widest point (no exact measurements performed).
This visual comparison of most components might assist navigating patients through some of the functional nuances between Medtronic Interstim Micro and Axonics SNM devices. Hopefully, we continue to generate data on direct patient use of these systems as shown below from the Axonics ARTISAN-SNM Pivotal trial at 1 year.
AXONICS SYSTEM: PATIENT RESPONSES TO QOL QUESTIONNAIRE AT ONE YEAR
- 93% of patients said they were satisfied with the therapy
- 92% said they would undergo the therapy again with the same expected results
- 89% considered charging the device to be easy
- 96% rated frequency and duration of charging as acceptable (*Most current device is charged monthly)
- 95% reported recharging the device no more than once a week
- 86% reported total charge time was 60 minutes or less