A pump assembly, comprising: a pump head comprising: an occlusion bed; a rotor guide; and a rotor assembly positioned between the occlusion bed and the rotor guide, wherein the occlusion bed is movable with respect to the rotor guide and the rotor assembly; a bezel surrounding an outer perimeter of the pump head, the bezel comprising a bezel upper side, a bezel lower side opposite the bezel upper side, a bezel inlet side extending from the bezel upper side to the bezel lower side, and a bezel outlet side opposite the bezel inlet side and extending from the bezel upper side to the bezel lower side; a motor; and tubing, wherein the bezel defines an inlet channel on the bezel inlet side and an outlet channel on the bezel outlet side, each of the inlet channel and the outlet channel guiding the tubing into the pump head, characterised in that the inlet channel has a first inlet width adjacent an inner surface of the bezel inlet side and a second inlet width adjacent an outer surface of the bezel inlet side, the second inlet width wider than the first inlet width such that the inlet channel flares away from the pump head, wherein the outlet channel has a first outlet width adjacent an inner surface of the bezel outlet side and a second outlet width adjacent an outer surface of the bezel outlet side, the second outlet width wider than the first outlet width such that the outlet channel flares away from the pump head, wherein an inlet bracket is attached to an inner surface of the bezel inlet side and an outlet bracket is attached to an inner surface of the bezel outlet side, wherein the inlet bracket defines an inlet bracket groove for receipt of the tubing on the bezel inlet side and the outlet bracket defines an outlet bracket groove for receipt of the tubing on the bezel outlet side, the rotor guide having a rotor guide inlet side defining a rotor guide inlet groove and a rotor guide outlet side defining a rotor guide outlet groove, wherein the occlusion bed and the rotor guide together define at least a portion of a pathway for the tubing through the pump head, and wherein the inlet bracket groove aligns with the rotor guide inlet groove and the outlet bracket groove aligns with the rotor guide outlet groove. a pump head comprising: an occlusion bed; a rotor guide; and a rotor assembly positioned between the occlusion bed and the rotor guide, wherein the occlusion bed is movable with respect to the rotor guide and the rotor assembly; an occlusion bed; a rotor guide; and a rotor assembly positioned between the occlusion bed and the rotor guide, wherein the occlusion bed is movable with respect to the rotor guide and the rotor assembly; a bezel surrounding an outer perimeter of the pump head, the bezel comprising a bezel upper side, a bezel lower side opposite the bezel upper side, a bezel inlet side extending from the bezel upper side to the bezel lower side, and a bezel outlet side opposite the bezel inlet side and extending from the bezel upper side to the bezel lower side; a motor; and tubing, wherein the bezel defines an inlet channel on the bezel inlet side and an outlet channel on the bezel outlet side, each of the inlet channel and the outlet channel guiding the tubing into the pump head, characterised in that the inlet channel has a first inlet width adjacent an inner surface of the bezel inlet side and a second inlet width adjacent an outer surface of the bezel inlet side, the second inlet width wider than the first inlet width such that the inlet channel flares away from the pump head, wherein the outlet channel has a first outlet width adjacent an inner surface of the bezel outlet side and a second outlet width adjacent an outer surface of the bezel outlet side, the second outlet width wider than the first outlet width such that the outlet channel flares away from the pump head, wherein an inlet bracket is attached to an inner surface of the bezel inlet side and an outlet bracket is attached to an inner surface of the bezel outlet side, wherein the inlet bracket defines an inlet bracket groove for receipt of the tubing on the bezel inlet side and the outlet bracket defines an outlet bracket groove for receipt of the tubing on the bezel outlet side, the rotor guide having a rotor guide inlet side defining a rotor guide inlet groove and a rotor guide outlet side defining a rotor guide outlet groove, wherein the occlusion bed and the rotor guide together define at least a portion of a pathway for the tubing through the pump head, and wherein the inlet bracket groove aligns with the rotor guide inlet groove and the outlet bracket groove aligns with the rotor guide outlet groove.