I just read your other post in family class sponsorship thread but answer is probably same that with such a serious spinal injury 1)unlikely to get travel insurance 2)facing up to a long flight with such an injury not really advisable but would probably need a doctors note for the airline liability 3)without travel insurance what happens if any ongoing issues given 7 years already bedridden sounds as though a very serious injury/condition
http://www.canadavisa.com/canada-immigration-discussion-board/i-am-a-student-in-canada-from-last-6-months-t475641.0.html