Patent ID: 8790305

Claim:
A peristaltic pump unit for medical infusion, the peristaltic pump comprising: a housing comprising at least one journal or hinge pin; a peristaltic assembly coupled to said housing; an anvil coupled to said housing, the anvil facing said peristaltic assembly; a support means coupled to said housing, said support configured to support, between said peristaltic assembly and said anvil, a flexible resilient tube forming part of a medical fluid delivery line that further comprises first and second colour-coded fittings spaced therealong upstream and downstream of said flexible resilient flexible tube, the support means comprising correspondingly colour-coded first and second brackets configured to respectively accept said first and second colour-coded fittings; a driving mechanism coupled to said housing, the driving mechanism operable to drive said peristaltic assembly to pinch said flexible resilient tube against said anvil at different positions along the flexible resilient tube; and a door comprising a bearing assembly configured to couple with the at least one journal or hinge pin of the housing such that when the door is in a closed position, the flexible resilient tube is positioned between said peristaltic assembly and said anvil, the bearing assembly comprising (i) a first part, fixed relative to the door, having an open-ended transverse slot terminating in a bearing surface that is arcuate about an axis and (ii) a second part, moveable relative to the first part, which in a first position permits insertion of said at least one journal or hinge pin into said transverse slot and in a second position obstructs said transverse slot and provides a further bearing surface cooperating with said at least one journal or hinge pin; wherein the second part comprises a cylindrical boss partially extending about said axis, said boss being journaled in a recess provided in a face of the first part, which recess is also cylindrical and extends partially about said axis, and wherein said at least one journal or hinge pin is coaxial with said bearing surfaces when the door is positioned on the housing.