Canadian citizens and Canadian permanent residents can sponsor their parents and grandparents for a Super Visa. A Super Visa is a form of temporary residence that allows your parents and grandparents to stay in Canada for up to five years at a time without having to leave Canada. This can also be extended for up to one additional year while they are in Canada. This visa only allows them to visit and does not allow them to work in Canada. Dependants cannot be included in this type of application.
As a Super Visa is for temporary residence, your parents and grandparents would not have any benefits in Canada such as government medical.