We're celebrating March Madness medtech-style with our first ever Medtech Startup Showdown, pitting young medical device companies head to head in a tournament and asking you, our readers, to choose which ones move on to the next round.

Here's how it works:

We put out a call for medical device startups to enter, and MD+DI's editors narrowed the field to eight. We've paired them off in brackets, and now you get to vote for your favorites to advance.

After each six-day voting period, we'll announce which startups received enough votes to make it to the next round.

Round 1 voting will be open until Monday, March 30. We'll announce the champion April 14, and the winner will be profiled in an upcoming issue of MD+DI. [Update: Round 1 voting is now closed.]

Here's the current bracket:

(click to enlarge)

Click here to see the entrants and cast your vote.