Most of these people are completely bedridden, and some even quadraplegics. They are not able to "go" anywhere on their own, or do much beyond operate a drug self-administration device that somebody else has filled. Such devices are routinely used on both terminal and non-terminal patients to allow the patient to control the amount and timing of pain medication, but except in assisted suicide cases, are set up in a way which makes deliberate or accidental self-administration of a lethal dose impossible.