up to date! Electronic dura mater (e-dura): allows the deaf to walk again

Release date: 2015-01-29

Swiss scientists have recently developed a soft and extendable implant that can be directly connected to the spinal cord of a sputum mouse and allowed to walk again with the help of external equipment. Researchers say the latest devices are expected to be used to treat patients with spinal cord damage and ultimately hope to help deaf people to exercise again.

Researchers at the Federal Institute of Technology in Lausanne, Switzerland, called the device "e-dura (electronic dura mater)", a layer of a thick, tough multilayer of membranes around the brain and spinal cord that protects the body. brain. According to the US Fun Science website recently reported that this device is made of gold, although the gold is also very soft, but it can not be extended, in order to make the gold more flexible, they made it a layer with a thickness of only 35 nanometers, filled with layers A small gap, which makes gold a stretchable mesh structure.

Scientists conducted a series of experiments on mice to test the performance of the implant. The results showed that the device was well integrated with the mouse's body and there was no rejection.

They injured the spinal cord of the mouse, then inserted the e-dura into the dura mask below the injured site and allowed the rats to receive electrical stimulation and brain serotonin via e-dura and electrical stimulation. A few weeks later, with the help of these devices, the sly mouse once again had the ability to walk.

In addition, they also tested the ability of e-dura to read nerve impulses. They inserted the device into the position of the dura mater - the motor's motor cortex (which is the area where the brain controls autonomous movements), and studies have shown that it can "read" the mouse's intention to move the leg or stand up straight.

Previously, researchers have developed prosthetic limbs that can control thinking; the US military is also developing implants that can help injured soldiers in the brain; implanted devices such as artificial cochleas and pacemakers have been popular for several years, making countless Patients benefit, but most implants integrated with the nervous system are placed outside the dura mater, while e-dura can be placed under the dura mater and directly in contact with the nerve tissue.

The researchers wrote in the January 9 issue of Science that, despite this, there is still a lot of work to do before using the device in the human body. First, the mouse must be connected to a stimulation device to walk, and they hope to eventually abandon the device. Second, the mice did not exercise autonomously. For true treatment, they want the brain to get a real signal, rather than a signal from an external device to control the patient's movements.

Source: Gua Tai Academic Help

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