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 the most delicate manual steps in the operation. Neuralink likes to say "the best step is no step," and it frames the change as a path to a safer, more repeatable surgery that is easier to scale to the many people who could benefit. The procedure was performed at UHN's Toronto Western Hospital as part of the trial, and Neuralink said the participant was controlling a cursor with their thoughts within an hour of surgery, with recovery progressing as expected.
The device is still investigational and has not been approved by the FDA or other regulators. The pitch is the same one running through this year's frontier-health news, from a blood test that read cancer survival better than a scan to a lab claiming the first human eggs grown from stem cells. The hard part is not the idea, it is making it safe and repeatable enough to reach real patients.
People Also Ask
What did Neuralink announce?
Neuralink said it inserted its implant's electrode threads through the intact dura, the brain's protective membrane, for the first time in its clinical trials, skipping the durectomy step that normally opens that layer with a scalpel.
What is a durectomy, and why does skipping it matter?
A durectomy is the surgical step of cutting through the dura to reach the cortex. Removing it takes out one of the most delicate manual steps, which Neuralink says makes the procedure safer, more repeatable, and easier to scale to more patients.
Where was the Neuralink transdural procedure performed?
It was performed at UHN's Toronto Western Hospital in Canada as part of Neuralink's clinical trial, and the participant was moving a cursor with their thoughts within an hour of surgery.
Is Neuralink's brain implant approved?
No. Neuralink says the device is investigational and has not been approved by the FDA or other regulators, and trial participants' experiences may not reflect future outcomes.