Infusion apparatus

• US 8,118,778 B2
• Filed: 07/13/2005
• Issued: 02/21/2012
• Est. Priority Date: 07/16/2004
• Status: Active Grant

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Inventors: Haylor, Nicholas Bryant, Everleigh, Simon Francis, Ruedi, Rene Werner, Lloyd, Alexander, Shearn, James Gower Johnson
• Primary Examiner(s): BOUCHELLE, LAURA A
• Application Number:
  US11/632,583
• Publication Number:
  US 20090043252A1
• Time in Patent Office: 2,414 Days
• Field of Search: 604/131, 604/151, 604/34, 604/246, 604/67, 604/29, 162/66, 162/58, 162/64, 162/54, 162/59, 162/61, 162/62, 162/67, 162/70
• US Class Current: 604/131
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 2205/6081 Colour codes
• CPC Class Codes: A61M 2205/84 for treating several patients simultaneously
• CPC Class Codes: A61M 2209/082 Mounting brackets, arm supports for equipment
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• CPC Class Codes: A61M 5/1415 Stands, brackets or the like for supporting infusion accessories
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: E05D 7/1061 in a radial direction E05D7/1005 takes precedence
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: H05K 5/0234 Feet; Stands; Pedestals, e.g. wheels for moving casing on floor

Abstract

In a peristaltic medical infusion pump unit, comprising a peristaltic assembly and a counter surface or anvil facing said peristaltic assembly and provided by the inner surface of a door (30) pivotally mounted on a housing (12) of the unit, the door (30) is readily non-destructively removable and replaceable. In use of the peristaltic pump unit, a flexible resilient tube (36) forming part of a medical fluid delivery line is extended between the peristaltic assembly and the counter surface or anvil provided by the door. The medical is fluid delivery line has first and second colour coded fittings (38, 40) spaced therealong upstream and downstream of the peristaltic assembly (26) and the region of the housing of the pump unit across which the infusion line is extended is provided, correspondingly spaced above and below the peristaltic assembly (26) with correspondingly colour coded support means (22, 24) for these fittings.

Claims

1. A peristaltic pump unit for medical infusion, the pump unit comprising:

a peristaltic assembly;

a counter surface or anvil facing said peristaltic assembly;

a support for supporting, between said peristaltic assembly and said counter surface or anvil, a flexible resilient tube forming part of a medical fluid delivery line; and

a driving mechanism operable to drive said peristaltic assembly, said mechanism incorporated in a housing;

wherein said anvil or counter surface is provided by a door or cover hingedly connected with said housing so that in an open position of said door or cover, said anvil or counter surface is spaced from the peristaltic assembly to allow the introduction of such flexible resilient tube across the peristaltic assembly, or to allow the removal of such flexible resilient tube from the unit, and so that in a closed position of said door or cover, such flexible resilient tube extended across the peristaltic assembly will be positioned between the peristaltic assembly and said anvil or counter surface, characterized in that said door is readily non-destructively removable, e.g. for cleaning purposes, and replaceable,

wherein the housing carries at least one journal or hinge pin and the door carries a complementary bearing arrangement, said bearing arrangement including a first part having an open-ended transverse slot termination in a bearing surface for said journal and a second part moveable with respect to said first part and which in a first position discloses said transverse slot to allow said journal to pass transversely through said slot into co-operation with said bearing surface,

wherein said first part is fixed with respect to the door and said bearing surface of said first part is arcuate about an axis fixed with respect to the door about said axis,

wherein said second part is movable into a second position in which it obstructs such transverse slot and provides a further bearing surface co-operating with said journal, said second part comprising a boss that is cylindrical about said axis, apart from the interruption due to said slot in the second part, said boss being journaled in a recess provided in a face of said first part, which recess, apart from the interruption due to said slot in the first part, is also cylindrical about said axis, and

wherein said journal or hinge pin carried by said housing is coaxial with said bearing surfaces when the door is in position on the housing.

2. A pump unit according to claim 1 wherein said first part comprises a base structure of said door and said face providing said cylindrical recess is at an edge of said base structure and wherein a cover plate or trim secured to said base structure has a wall or flange which extends at least partly over said second part, on the side of the second part remote from said cylindrical recess, whereby said second part is held captive between said base structure and said wall or flange.