What can do I do for my guinea pig's sore foot?

Yesterday morning a scab on my guinea pig's foot tore and it started bleeding terribly. I was so scared and since it was Sunday the vet was closed. I used cornstarch and applied pressure. Fortunately it clotted and today he's doing a lot better. I took the wire floor out of his cage which probably caused his scab to begin with so now he has a soft surface to walk on. He's overall healthy but there is still a sore on his foot. Is there anything else I can do to help heal his sore faster? I'm afraid of applying a bandage because he could bite it off ripping his scab and if I put ointment on it he could lick it off and ingest it.