In reply to Mr Fuller:
Wait for the break to heal (3 weeks at a guess), then tape your middle finger into a claw shape. Make sure you tape along the sides of the joint to take the load off the ligaments, and then tape the bent finger to the adjacent ring finger (some people prefer the index finger, or all three together).
Using such a tape job I competed in a national judo comp one day after such an injury, but for general training I would certainly have waited a bit longer. The finger stress is absolutely comparable to climbing.
Of course, you should pick your routes with care for a while. Tone down a bit on the mono finger hole pulling....
CB