Proof of Concept - One way would be to design a prototype of the product or service and then share it with trusted colleagues. Sounds like you may need to do a study so partnering with an academic institution or finding venture capital funding to help support this would be helpful. Joining a healthcare incubator or accelerator such as Start-Up Health can give you some structure to organize your work and connections for funding in exchange for equity. This way gives you the organization and a higher sense of commitment you may need to get to the next level. I've been part of a healthcare incubator and successfully launched a medical service. I'd be happy to have a conversation to help you learn more about this.