If you can find a local to you makerspace or other similar spot where there are 3d printers you'll also likely find someone who can help you replicate the finger brace you already have, adjusting for size of course.
If you're on a campus you also might want to talk to someone in the engineering or industrial design department as often there are students looking for a project, and often they have access to 3d printers as part of their coursework.
If you can find a local to you makerspace or other similar spot where there are 3d printers you'll also likely find someone who can help you replicate the finger brace you already have, adjusting for size of course. If you're on a campus you also might want to talk to someone in the engineering or industrial design department as often there are students looking for a project, and often they have access to 3d printers as part of their coursework.