How do I convince my 78-year-old father to get medical aid for his non-healing open wounds?

Hello doctor,

My 78-year-old father simply refuses to see a doctor even though he has had an open wound on his shin (that initially was from hitting a corner of a desk) for the past 5 years that has kept growing in size. It is now a small crater where you can almost see the bone. He cleans it out daily and applies ointments that I cannot recall, but I do not know how he has not died from infection yet. When in the same room as him, you can smell rotting skin. On top of that, he has a problem with his right earlobe. The bottom part was cut and after months of it being scabbed over again and again, it became so inflamed it exploded and he tore the bottom of his earlobe off. Now that too is an open wound that is not healing.

Now that you have the current situation, my question to you is "What can I do to get my father to see a doctor?". I am 30 years old and have no legal guardianship or rights to his medical decisions. Not once in my life has he seen a doctor. He does not even take Aspirin. I am sure his immune system cannot hold out much longer from working round the clock fighting off bacteria and who knows what else. This has been years. If it is his time to go, I understand. But there is no need to expedite the process and shorten his time on earth if it can be avoided. Please help.