'Shark Tank' Sneak Peek: Doctor's Invention Leaves One Shark 'Buzzing' (Exclusive Video)

A pediatrician may have overestimated the value of her invention in this week's Shark Tank.

The Hollywood Reporter has an exclusive look at this week's episode of the ABC series, in which Dr. Amy Baxter is seeking $500,000 for a 5 percent stake in Buzzy4Shots, a buzzing medical device that takes the sting out of the dreaded shot for children.

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Shark Kevin O'Leary is definitely interested, and offers her that dollar figure -- but with a 20 percent stake.

"I've already had people offer me $500,000," she says.

"They're not me," O'Leary replies.

The other entrepreneurs featured in this episode include an architect from New York who pitches a unique dating service that blends online dating with personal interaction, a couple from Los Angeles with bamboo cleaning cloths that offer an eco-friendly alternative to paper towels and two sisters from L.A. who have designed a fast and easy way to make a bed by combining a sleeping bag and a fitted sheet.

Also on the sharks panel this week are Barbara Corcoran, Mark Cuban, Lori Greiner and Robert Herjavec.

Shark Tank, from Sony Pictures Television, airs at 9 p.m. Fridays on ABC.