Perfusion International and Houston Extracorporeal Therapies offer a full range of renal solutions, including: Intermittent Hemodialysis (IHD) CRRT TPE CHF Therapy Perfusion International has Gambro PrismaFlex CRRT machines for lease. Contact us for leasing options. Perfusion International can also provide disposables (Filter Sets), fluids and technical support and help setting up your CRRT program.