User's Manual

Description
4
The Pump has six major components. These components are outlined below:
• medication reservoir
• pumping mechanism
• microelectronics
• antenna
• battery
• tone transducer
Other components of the Pump include the inlet valve, fill port, septum,
cyclopentane gas and 20µm filter. Figure 3 shows the interior components of the
Pump.
Figure 3: Interior of the Implantable Insulin Pump
The Medication Reservoir stores approximately 15 ml or 6,000 units of a
special U-400 insulin. Depending on an individual’s insulin requirements, the
medication reservoir is refilled once in approximately every two to three months.
The medication reservoir is maintained at a negative pressure (vacuum) at all
times to allow for safe and reliable filling. This vacuum prevents any risk of
insulin leakage in the event of a breach in the Pump case or reservoir. The
reservoir is refilled with a special needle (Medtronic MiniMed Refill Needle
MMT-4102). The fill port has a 20 micron filter to prevent particulate material
from entering the Pump and a redundant septum and valve configuration to
prevent entry of body fluids.