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Infusion flow system and fluid coupling

  • US 9,238,119 B2
  • Filed: 08/11/2011
  • Issued: 01/19/2016
  • Est. Priority Date: 08/12/2010
  • Status: Active Grant
First Claim
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1. A fluid coupling apparatus comprising:

  • a housing comprising a proximal end, a distal end, and a longitudinal axis extending between the proximal end and the distal end of the housing, wherein the housing further comprises;

    a primary bore comprising an opening facing the distal end of the housing and a proximal face located within the bore, the proximal face facing the distal end of the housing, anda supply line passage formed in the housing, the supply line passage extending from the proximal end of the housing to an opening in the proximal face of the primary bore;

    a sleeve comprising a proximal end located in the primary bore, wherein the sleeve further comprises;

    a seal end facing the proximal face of the primary bore,a collet bore comprising a collet compression surface at a proximal end and an opening at a distal end, anda sleeve passage extending from the proximal end of the sleeve into the collet bore;

    a collet comprising a proximal end located in the collet bore of the sleeve, wherein the collet further comprises;

    a plurality of collet fingers surrounding a collet passage, wherein each of the collet fingers comprises an inclined surface proximate the proximal end of the collet,wherein the inclined surfaces of the plurality of collet fingers are in contact with the collet compression surface of the sleeve such that movement of the collet in a proximal direction towards the proximal end of the housing forces the collet fingers towards a center of the collet passage;

    a compliance member comprising a proximal end in contact with the distal end of the collet, and wherein the compliance member comprises a resiliently compressible elastomeric polymer; and

    a collet compression member engaged with the housing, wherein the collet compression member comprises an inner surface, an outer surface facing away from the inner surface, and a tubing passage formed through the collet compression member from the inner surface to the outer surface;

    wherein advancement of the collet compression member in the proximal direction towards the proximal end of the housing causes the following;

    the inner surface of the collet compression member is forced against a distal end of the compliance member such that the proximal end of the compliance member is forced against the collet,the inclined surfaces of the plurality of collet fingers are forced against the collet compression surface of the sleeve, andthe seal end of the sleeve is forced towards the proximal face of the primary bore.

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