#stentrode #neuralink #brain

Stentrode is a small stent-mounted electrode array permanently implanted into a blood vessel in the brain, without the need for open brain surgery. It is in clinical trials as a brain–computer interface (BCI) for people with paralyzed or missing limbs, who will use their neural signals or thoughts to control external devices, which currently include computer operating systems. The device may ultimately be used to control powered exoskeletons, robotic prosthesis, computers or other devices.

The small implant is an electrode array made of platinum that is mounted on a nitinol endovascular stent. The device measures about 5 cm long and a maximum of 4 mm in diameter. The implant is capable of two-way communication, meaning that it can both sense thoughts and stimulate movement, essentially acting as a feedback loop within the brain, which offers potential applications for helping people with spinal cord injuries and control robotic prosthetic limbs with their thoughts.

Stentrode device is implanted via the jugular vein into a blood vessel next to cortical tissue near to the motor cortex and sensory cortex, so open brain surgery is avoided. Insertion via the blood vessel avoids direct penetration and damage of the brain tissue.

The signals are captured and sent to a wireless antenna unit implanted in the chest, which sends them to an external receiver. The patient would need to learn how to control a computer operating system that interacts with assistive technologies.

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