Lithium Batteries For Implantable Medical Devices

Lithium primary batteries have played a vital role in the successful development of a wide range of battery powered implantable medical devices.

Lithium batteries for implantable medical devices.

For implantable medical devices patients need to have confidence that the battery will give them a long time between needing to be re charged known as the charging interval. Almost as important the battery s useful capacity and hence the time between charges will gradually decrease over its usable life and this dictates how many years it. If the battery in your flashlight or cell phone fails it s an inconvenience. Some of the tiniest are used in the medical field to power bioengineering devices.

Recently li ion batteries have found use in implantable medical devices such as neurostimulators for the relief of chronic pain and deep brain stimulators for the treatment of parkinson s disease. This can occur by overcharging overloading as well as by mechanically or environmentally over stressing. Marissa caldwell is a battery research and technology scientist at medtronic. For this reason medical devices containing rechargeable lithium batteries must confirm to the iec 62133 standard.

Battery systems have been developed that provide years of service for implantable medical devices. But if the battery in your surgically implanted medical device imd fails it s a medical emergency. Common implantable medical devices that use primary lithium batteries as the main power source. Caldwell was a panelist in a session on batteries.

Lithium rechargeable batteries have the potential to overheat and even catch fire. Almost as important the battery s useful capacity and hence the time between charges will gradually decrease over its usable life and this dictates how many years. Adapted with permission from 1. The universal adoption of lithium battery technology in these applications can be ascribed to the high energy density and high voltage afforded by the lithium anode.

Needless to say batteries for the latter are very special and put together with extreme care. 7 bone growth generator 1. Often these devices are implanted within the body to help monitor and maintain health. 4 implantable cardiac defibrillator.

The challenge of implantable medical device batteries. The primary systems utilize lithium metal anodes with cathode systems including iodine manganese. 5 cardiac resynchronization device. We have produced hundreds of thousands of implantable batteries using the most advanced manufacturing capabilities in our new state of the art facilities.

As a li ion battery cell ages the decrease of capacity and the increase of internal resistance degrade the electrical performance of the cell by. For implantable medical devices patients need to have confidence that the battery will give them a long time between needing to be recharged known as the charging interval.