RecruitingDevice studySolv Multi-Pass Hemodialysis System In-Center Clinical StudySolv In-Center clinical study is a pre-market, prospective, multicenter, single arm, open-label clinical study. The patient population will include patients with kidney failure or insufficiency requiring hemodialysis and/or ultrafiltration. Eligibility will be open to incident dialysis patients and patients currently receiving HD in an in-center environment. All vascular access types including AV-fistula, AV-graft, and tunneled hemodialysis catheters.