Recurring urinary blood infection.

My father is undergoing treatment for Parkinson's... He is taking medicines like syndopa, pacitane, pregaba nt, jointrich Since September 2017 February 2018, he got fever and chills and abdomen pain, admitted him in hospital. After tests, they told urinary bladder is over extended without calculi on wall thickening. Uroflow metry is poor. Pressure flow study showed void small volume with severe abdominal strain, could not generate detrusor contraction consistent with acontractile detrusor. Doctor suggested using folic catheter self catheter daily 4 times. May 2018, for past 2 months we have taken care during self catheterization. But we admitted him in hospital due fever with chills and rigors and shortness of breath. Doctor told that he had uti infection and blood and urine. Aug 2018. My father got fever and chills again and doctor told it's due to infection UTI He is getting infection due to self catheterization Please suggest me. What we need to takecare. attaching files.