TrueVision Systems, a Santa Barbara-based surgical technology firm, has sealed a deal to create a joint venture with a Chinese medical device company and will soon begin selling its gear in China.

TrueVision makes a big-screen, 3-D display system that attaches to a surgeon’s microscope — think “Avatar” meets brain and eye surgery. The startup first announced plans for a deal with Weigao Holdings earlier this year.

TrueVision will own 45 percent of the joint venture, with Weigao owning 55   percent. TrueVision is providing the intellectual property and some regulatory expertise, while Weigao provides money: $3 million initially, and up to $10 million eventually.

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