Multi-directional Impact Protection System


MIPS BPS is a safety technology for helmets. In the event of an angled impact MIPS can reduce harmful rotational forces, which may be transmitted to the brain, by allowing the helmet to slide relative to the head. These rotational forces can cause concussions or even worse brain damage. MIPS stands for Multi-directional Impact Protection System.
The technology was developed by specialists at the Royal Institute of Technology and a brain surgeon at the Karolinska Institute in Stockholm, Sweden, in 1996.

Rotational motion

To understand the functionality behind MIPS BPS, it is important to know what rotational motion is, and why it is so harmful to the brain. Rotational motion, in this case, is the result of the brain continuing to move or stretch after the head has come to a quick and sudden stop following an angled impact. Several researchers have linked severe brain injuries like Diffuse Axonal Injury and Subdural Hematoma to the transmission of rotational motion to the brain from angled impacts. Mild Traumatic Brain Injury or concussion is also believed to be caused by rotational motion.

Functionality

In a helmet equipped with the MIPS technology, a low-friction layer allows the helmet to slide relative to the head, resulting in a reduction of the rotational motion that may otherwise be transmitted to the brain. In this way, the MIPS approach mimics the natural safety system of the human head. The brain is surrounded by cerebrospinal fluid that protects it by allowing the brain to slide inside the skull when exposed to an angled impact. Mimicking the cerebrospinal fluid, MIPS adds a low friction layer that enables a relative movement of 10–15 mm between the head and the helmet in any direction.
The MIPS BPS is integrated by the manufacturer. It cannot be retrofitted by the consumer.

History

In 1996, Swedish neurosurgeon Hans von Holst began evaluating the general construction of helmets. Following several years of study and work related to head trauma for the World Health Organization in Geneva, he determined that existing helmet technology provided inadequate protection against brain trauma, often with devastating consequences for the victims of brain injuries.
Together with Royal Institute of Technology researcher Peter Halldin, von Holst developed a technology that was designed to provide a more effective protection against brain trauma. To evaluate the risk of different types of head injuries and to simulate impacts were a person is wearing a helmet, they used the Finite Element Model, developed by Svein Klein, Professor at Sweden’s Royal Institute of Technology. After thoroughly evaluating the brain anatomy, physiology, and combining their years of testing and expertise, von Holst and Halldin produced what is now known as the MIPS Brain Protection System, a technology that mimics the brain’s own protective structure.