screetch is right. If you decide to move to Canada, your wife can sponsor you and your child for PR. As a citizen, she doesn't have to reside in Canada in order to sponsor you but she would need to prove that you will be moving to Canada when you get your PR.
Another way for the child to be Canadian would be for her to give birth to the child in Canada but if she has not been living in Canada for some time, she would have lost her health care and you would have to pay the hospital bill out of pocket.
Another way for the child to be Canadian would be for her to give birth to the child in Canada but if she has not been living in Canada for some time, she would have lost her health care and you would have to pay the hospital bill out of pocket.