Patent ID: 7677886

Claim:
A maxillofacial orthodontic appliance comprising: a maxilla expander which is adapted to be fixed to the maxilla in the mouth of a human and a towed-unit to be towed which is connected to said maxilla expander and towed in an anterior direction from the human, wherein said maxilla expander comprises: a left contact part for pushing the left maxillary tooth row of the human from within, a right contact part for pushing the right maxillary tooth row of the human from within, an adjusting mechanism connecting said left contact part and said right contact part with the distance between said left contact part and said right contact part being variable, a left hole formed on said left contact part and a right hole formed on said right contact part, and said towed-unit comprises: a left wire whose one end is inserted into said left hole and the other end is for protruding out of the mouth, a right wire whose one end is inserted into said right hole and the other end is for protruding out of the mouth, a connecting tube provided on one of said left wire and said right wire and extending in the direction of the variation of the distance, caused by said adjusting mechanism, between said left contact part and said right contact part and a connecting wire provided on the other of said left wire and said right wire and inserted into said connecting tube slidably.