A Louisville company that’s developing a medical device to help surgeons monitor the progress of spinal fusion surgeries is a eyeing a relocation to the Cleveland area. OrthoData is hoping to attract some Northeast Ohio investors to help pave the way for the relocation. The company would also use a hoped-for $7 million series B round of investment to fund animal and human testing of its implantable electronic spine fusion sensor, said CEO Ric Navarro, a Northeast Ohio native who was previously an executive with Integra Spine.