Neuralink Threads Its Brain Implant Through the Dura Without Cutting It Open

Neuralink's first transdural insertion put electrode threads through the brain's intact dura at Toronto Western Hospital, removing the durectomy step and pointing toward a safer, more scalable implant surgery.

Neuralink Threads Its Brain Implant Through the Dura Without Cutting It Open Neuralink's first transdural insertion put electrode threads through the brain's intact dura at Toronto Western Hospital, removing the durectomy step and pointing toward a safer, more scalable implant surgery. Aaron Rafferty July 01, 2026 Key Takeaways For the first time in its clinical trials, Neuralink inserted its implant's electrode threads through the dura, the brain's tough protective membrane, without cutting it open. Removing the durectomy step takes out one of the most delicate parts of the surgery, which Neuralink says points to a safer, more repeatable, and more scalable procedure. The first-of-its-kind operation was done at UHN's Toronto Western Hospital, and the participant was moving a cursor by thought within an hour of surgery. Neuralink said on June 30 that it had, for the first time in its clinical trials , inserted the electrode threads of its brain implant straight through the dura and into the cortex without cutting the membrane open. The dura is the brain's armor, a layer so tough that surgeons normally slice through it with a scalpel in a step called a durectomy. Neuralink's threads are thinner than a human hair, and the company says the dura can be more than ten times thicker than they are. The brain underneath is moving the whole time, pushed by every heartbeat and breath, and the membrane hides the blood vessels a surgeon needs to avoid. Threading through all of that took what Neuralink described as extensive engineering and preclinical work to build and validate new transdural imaging and insertion techniques, with the surgical robot correcting in real time for that constant motion. Taking the durectomy out matters because it removes one of