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Uterine distension fluid management system with peristaltic pumps

  • US 10,077,767 B2
  • Filed: 12/22/2016
  • Issued: 09/18/2018
  • Est. Priority Date: 12/24/2015
  • Status: Active Grant
First Claim
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1. A peristaltic pumping system, comprising:

  • a pump console having a drive rotor that is controllably rotated by the pump console, the drive rotor comprising a roller driving feature and a roller spreader that each extend outwardly from an exterior surface of the drive rotor; and

    a pump cartridge detachably mounted on the drive rotor, the pump cartridge comprisinga housing having an opening through which the roller spreader extends when the pump cartridge is mounted on the drive rotor,a roller assembly within the housing, the roller assembly comprisingfirst and second hubs maintained in a spaced apart relationship by one or more posts extending therebetween and defining a pump cartridge axis, anda plurality of planetary rollers mounted on, and extending between, the first and second hubs, wherein the rollers are mounted in a circumferentially spaced orientation about the pump cartridge axis, each roller comprising a roller body defining a respective roller axis, wherein each roller has respective axles extending from opposite end surfaces of the roller body along the roller axis, wherein the roller axles are positioned in respective slots in, or associated with, the first and second hubs that are oriented substantially orthogonal to the roller axes so that the rollers may move in a radially outward direction away from the pump cartridge axis toward an interior wall of the housing by travel of the roller axles in the hub slots, anda barb assembly interposed between the interior wall of the housing and an outer radial periphery of the roller assembly, the barb assembly comprising one or more compressible tubing lines,wherein angular rotation of the roller spreader relative to the roller assembly displaces the roller bodies radially outward to thereby compress contacted portions of the one or more tubing lines against the interior wall of the housing, andwherein the first hub is configured to engage the roller driving feature so that rotation of the drive rotor causes rotation of the roller assembly about the pump cartridge axis.

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