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1. WO2020117339 - PLATEN FOR PERISTALTIC INFUSION PUMP

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. An infusion pump comprising:

a pump body including a pumping mechanism;

a platen assembly including a first platen member rotatably coupled to the pump body to pivot relative to the pump body about a first hinge axis and a second platen member rotatably coupled to the first platen member to pivot relative to the first platen member about a second hinge axis;

wherein the platen assembly is pivotable about the first hinge axis to an open position in which the second platen member and the first platen member are positioned away from the pumping mechanism;

wherein the platen assembly is pivotable about the first hinge axis to a closed position in which the second platen member and the first platen member are positioned opposite and in proximity to the pumping mechanism.

2. The infusion pump according to claim 1, wherein the first platen member includes a bend or a curve between the first hinge axis and the second hinge axis.

3. The infusion pump according to claim 1, wherein the pump body includes a first alignment feature and a second alignment feature, the platen assembly includes a first alignment counter-feature and a second alignment counter feature, and the first alignment feature and second alignment feature respectively mate with the first alignment counter-feature and the second alignment counter-feature when the platen assembly is in the closed position.

4. The infusion pump according to claim 3, wherein the first alignment feature and the second alignment counter-feature are included on the second platen member.

5. The infusion pump according to claim 4, wherein the second platen member includes a platen surface, and the first alignment counter-feature and the second alignment counter-feature are respectively located adjacent to opposite ends of the platen surface.

6. The infusion pump according to claim 3, wherein the first alignment feature includes a first pin and the first alignment counter-feature includes a first slot.

7. The infusion pump according to claim 6, wherein the second alignment feature includes a second pin, and the second alignment counter-feature includes a second slot.

8. The infusion pump according to claim 1, wherein the first platen member includes a mounting portion configured for rotatably mounting the first platen member on the pump body for rotation about the first hinge axis and a branch extending from the mounting portion, wherein the mounting portion is thicker than the branch in a direction of the first hinge axis, and the branch is located between and spaced from opposite axial ends of the mounting portion.

9. The infusion pump according to claim 8, wherein the branch is centrally

located between the opposite axial ends of the mounting portion.

10. The infusion pump according to claim 1, wherein the first platen member includes a first platen surface and the second platen member includes a second platen surface, wherein the first platen surface and the second platen surface engage tubing of an administration set received by the infusion pump when the platen assembly is in the closed position.

11. The infusion pump according to claim 10, wherein the first platen surface includes a first arcuate platen surface and the second platen surface includes a second arcuate platen surface, and the first arcuate platen surface and the

second arcuate platen surface follow a single arcuate profile when the platen assembly is in the closed position.

12. The infusion pump according to claim 10, further comprising an upstream pressure sensor and a downstream pressure sensor, wherein the upstream pressure sensor is arranged to detect pressure within tubing of an

administration set received by the infusion pump at a location opposite from the first platen surface and the downstream pressure sensor is arranged to detect pressure within the tubing of the administration set at a location opposite from the second platen surface.

13. A platen assembly for an infusion pump, the platen assembly comprising:

a first platen member having a first platen surface, the first platen member being rotatably coupled to the infusion pump to pivot relative to the infusion pump about a first hinge axis; and

a second platen member having a second platen surface, the second platen member being rotatably coupled to the first platen member to pivot relative to the first platen member about a second hinge axis different from the first hinge axis;

wherein the second platen member is pivotable relative to the first platen member to a pump operating position in which the first platen surface and the second platen surface follow a single surface profile.

14. The platen assembly according to claim 13, wherein the single surface profile is an arcuate surface profile.

15. The platen assembly according to claim 13, wherein the first platen member is configured such that a load path through the first platen member from the second hinge axis to the first hinge axis is non-linear.