Insulin Pumps

Insulin Pumps (Animas Corporation, a Johnson and Johnson Company). This MRI information pertains to the following insulin pumps from Animas Corporation, a Johnson and Johnson Company:

-Animas 2020 Insulin Pump
-IR Animas 1200
-IR 1000 Insulin Pump
-IR 1100 Insulin Pump
-IR 1200 Insulin Pump

Each insulin pump indicated above should not be exposed to very strong electromagnetic fields, such as MRIs, RF welders or magnets used to pick up automobiles. Very strong magnetic fields, such as that associated with MRI, can “magnetize” the portion of the insulin pump’s motor that regulates insulin delivery and, thus, damage this device.

For the patient: If you plan to undergo an MRI, remove the insulin pump beforehand and keep it outside of the MR system room during the procedure.

If the pump is accidentally allowed into the MR system room, disconnect the pump immediately and contact Animas Pump Support for important instructions.

For the Healthcare Professional: DO NOT bring the insulin pump into the MR system at any time. If the pump is accidentally allowed into the MR system room, disconnect the pump immediately and contact Animas Pump Support for important instructions.

[MRI healthcare professionals are advised to contact the manufacturer to ensure that the latest safety information is obtained and carefully followed in order to ensure patient safety relative to the use of an MRI procedure.]

Cozmo Pump, Infusion Pump
According to the User Manual for the Cozmo Pump (Deltec, Inc., St. Paul, MN), which is a device used to administer insulin, the following is stated regarding Magnetic Resonance Imaging (MRI):

“Caution: Avoid strong electromagnetic fields, like those present with Magnetic Resonance Imaging (MRI) and direct x-ray, as they can affect how the pump works. If you cannot avoid them, you must take the pump off.”

[MRI healthcare professionals are advised to contact the respective manufacturer in order to obtain the latest safety information to ensure patient safety relative to the use of an MRI procedure.]

Medtronic MiniMed 2007 Implantable Insulin Pump System (Medtronic Minimed, Northridge, CA)

The Medtronic MiniMed 2007 Implantable Insulin Pump System (Medtronic Minimed, Northridge, CA ) may offer treatment advantages for diabetes patients who have difficulty maintaining consistent glycemic control. Patients that have not responded well to intensive insulin therapy, including multiple daily insulin injections or continuous subcutaneous insulin infusion using an external pump, may be primary candidates for the Medtronic MiniMed 2007 System. The Medtronic MiniMed 2007 System delivers insulin into the peritoneal cavity in short, frequent bursts or “pulses”, similar to how pancreatic beta cells secrete insulin.

Medtronic MiniMed 2007 Implantable Insulin Pump System and MRI.
The Medtronic MiniMed 2007 Implantable Insulin Pump is designed to withstand common electrostatic and electromagnetic interference but must be removed prior to undergoing an MR procedure. Any magnetic field exceeding 600 gauss will interfere with the proper functioning of the pump for as long as the pump remains in that field. Fields much higher than that, such as those emitted by an MR system, may cause irreparable damage to the pump.

By comparison, infusion sets (MMT-11X, MMT-31X, MMT-32X, MMT-37X, MMT-39X) used with this device contain no metallic components and are safe to be used and can remain attached to the patient during an MR procedure. The only exceptions would be Polyfin infusion sets. Polyfin infusion sets (MMT-106 AND MMT-107, MMT-16X, MMT-30X, MMT-36X) have a surgical steel needle that remains in the subcutaneous tissue. These infusion sets should be removed prior to any MR procedure. [Reprinted with permission from Medtronic, Minimed]

MiniMed Paradigm REAL-Time Insulin Pump and Continuous Glucose Monitoring System (522 and 722 Insulin Pumps; Medtronic Minimed, Northridge, CA)

MRI Information for Patients

Magnetic fields
Do not use pump cases that have a magnetic clasp.
Do not expose your insulin pump to MRI equipment or other devices that generate very strong magnetic fields.
The magnetic fields in the immediate vicinity of these devices can damage the part of the pump’s motor that regulates insulin delivery, possibly resulting in over-delivery and severe hypoglycemia.

Your pump must be removed and kept outside the room during magnetic resonance imaging (MRI) procedures.

If your pump is inadvertently exposed to a strong magnetic field, discontinue use and contact your local help line or representative for further assistance.

The insulin pump, transmitter, and sensor must be removed prior to entering the MRI environment.

[Reprinted with permission from Medtronic, Minimed]

[MRI healthcare professionals are advised to contact the respective manufacturer in order to obtain the latest safety information to ensure patient safety relative to the use of an MR procedure.]

REFERENCES
http://www.animascorp.com

http://www.animascorp.com/products/pr_userguide.shtml

http://www.cozmore.com

http://www.minimed.com