David Camarillo: Why helmets don't prevent concussions -- and what might
David Camarillo - Bioengineer
David Camarillo's research focuses on understanding and preventing traumatic brain injury. Full bio
these days more so than it ever has,
what was much worse than that
where I suffered concussions,
of the most recent one
that a repeated history of concussion
such as Alzheimer's,
of the Will Smith movie "Concussion."
and what they see in the military,
of concussion for kids,
that I should tell you
in bicycling and football
your children against concussion.
against skull fracture.
all the time from parents,
with any kind of confidence there.
from a bit of a different lens,
how can we prevent concussion?
of the details around concussion
a better understanding.
to prevent skull fracture with helmets
We know how it works.
much more of a mystery.
be happening in a concussion,
tells the whole story.
into the other side of the skull.
in this video from the CDC,
smashed into the skull,
so it's on the outer surface of the brain.
some aspects that are probably right,
think happens with concussion,
that's wrong with this video.
and I think most experts would,
does have these dynamics.
back and forth and oscillate.
you see in the brain in this video
in the cranial vault,
with cerebral spinal fluid,
moves very little inside the skull.
as it moves around,
substances in your body,
kind of like jello.
and turning and contorting,
to be something that's happening
that's much deeper
approaching this problem
the mechanisms of concussion
that are essentially the same
the mouthguard is this:
substances in your body.
other approaches, with helmets.
that go on your skin,
is the only reliable way
we can go beyond studying cadavers,
learn so much about concussion
and study live humans.
a group of willing volunteers
into each other on a regular basis
Stanford football team.
we measured with this device.
is the device has this gyroscope in it,
to measure the rotation of the head.
that that's the critical factor
what is happening in concussion.
extra people late, but Luck has time,
just this little post route,
You'll hear this.
is probably a little excessive there.
is he got hit really hard and he was hurt.
much richer information.
in the lower left side of his face mask.
that was a little counterintuitive.
to whip back to the right.
was sort of a whiplash-type phenomenon,
what led to the brain injury.
that it can measure the skull motion,
is what's happening inside of the brain.
Svein Kleiven's group in Sweden.
model of the brain.
from the injury I just showed you,
and contorting as I mentioned.
look a lot like the CDC video.
is being stretched.
to 50 percent of its original length,
your attention to is this red spot.
to the center of the brain,
on the exterior surface
concussion might be happening,
that a concussion is more likely
rotates in this direction.
in sports like football,
So what might be happening there?
in the human brain
and the left brain.
to notice in this figure here
of the right brain and the left brain
that goes deep into the brain.
what you can't see in this image,
all the way to the back of your head,
is when you're struck
in this left-right direction,
right down to the center of your brain.
at the bottom of this fissure?
here at the bottom of that fissure
the right and left sides of your brain.
mechanisms of concussion,
they strike the corpus callosum,
between your right and your left brain
of the symptoms of concussion.
of what we've seen
chronic traumatic encephalopathy.
ex-professional football player,
is if you look at the corpus callosum,
the size of a normal corpus callosum
who has chronic traumatic encephalopathy,
for all of the space in the ventricles.
near the center of the brain
is indeed consistent.
of hope by the end of this talk.
this mechanism of injury,
of the forces down this fissure,
slow the head down just enough
does not lag behind the skull
in synchrony with the skull,
this mechanism of concussion.
but some of you may have seen this.
and it's a real sport.
from my house the other day,
there have been no reported concussions.
this principle does work,
for bike riding or playing football.
with a company in Sweden called Hövding.
of air to give you some extra space
that are in our mouthguard,
to have a fall,
that explodes and triggers,
works in your car, essentially.
we've done in my lab with their device,
the risk of concussion in some scenarios
the benefits of technology
and probably won't be any time soon.
there are some not so good reasons.
has been given jurisdiction
at the beginning about skull fracture.
but it's not sufficient, I would say.
this test doesn't evaluate
is that airbag going to trigger
and not trigger when it doesn't need to?
to prevent concussion or not?
which aren't regulated,
by the government, anyway.
which is the way most industries work.
has been quite resistant
the mechanism of concussion,
how can we have better test standards?
can use this type of information
to the original question I asked,
letting my child play football
of my own traumatic experience.
about my daughter, Rose, riding a bicycle.
race down the streets of San Francisco.
of one of these streets.
is to -- and I believe this is possible --
on something in my lab in particular
of the given space of a helmet.
that we will be able to,
the risk of concussion
of more immediate nature,
and grandparents when I'm asked,
to engage in these activities.
to have a wonderful team at Stanford
with the final story,
when you hear the word concussion.
About the speaker:David Camarillo - Bioengineer
David Camarillo's research focuses on understanding and preventing traumatic brain injury.
Why you should listen
Dr. David Camarillo, Ph.D., is Assistant Professor of Bioengineering and (by courtesy) Mechanical Engineering at Stanford University. He holds a B.S.E in Mechanical and Aerospace Engineering from Princeton University (2001), a Ph.D. in Mechanical Engineering from Stanford University (2008) and completed his postdoctoral research fellowship in Biophysics at the University of California, San Francisco in 2011.
Camarillo worked in the surgical robotics industry at Intuitive Surgical and Hansen Medical, before launching his laboratory at Stanford in 2012. His current research focuses on designing force measurement devices for multiple clinical and scientific applications including embryo development, brain trauma and cardiac therapy.
Camarillo was recently awarded the Hellman Fellowship for his work in robot-assisted reproduction as well as the Office of Naval Research Young Investigator Program award for his research in brain biomechanics.
David Camarillo | Speaker | TED.com