I've researched the subject "Receiving Communion at Home" and came across a wonderful website with good information for the patient/parishioner. Instead of paraphrasing the article, here's a link for your viewing:
http://www.catholicnewsagency.com/resources/prayers/circumstantial-prayers-and-blessings/communion-of-the-sick/
St. Francis de Sales once wrote: “The Prayer of the sick person is his patience and his acceptance of his sickness for the love of Jesus Christ. Make sickness itself a prayer, for there is none more powerful, save [except] martyrdom!”