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Pressure-regulating vial adaptors

  • US 9,895,291 B2
  • Filed: 07/01/2015
  • Issued: 02/20/2018
  • Est. Priority Date: 08/18/2011
  • Status: Active Grant
First Claim
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1. An adaptor configured to couple with a sealed vial, the adaptor comprising:

  • a housing apparatus including a distal access aperture configured to permit introduction of fluid into the sealed vial when the adaptor is coupled to the sealed vial, wherein at least a portion of an access channel and at least a portion of a regulator channel pass through the housing apparatus;

    a regulator enclosure, wherein when the adaptor is coupled with the vial the regulator enclosure is in fluid communication with the inside of the vial via the regulator channel, wherein the regulator enclosure is configured to move between;

    a first orientation in which at least a portion of the regulator enclosure is at least partially folded; and

    a second orientation in which at least a portion of the regulator enclosure is at least partially unfolded when fluid is introduced into the sealed vial via the access channel; and

    a check valve positioned between the housing apparatus and the regulator enclosure;

    wherein, when the adaptor is coupled with the vial, in response to a pressure difference between the inside and outside of the vial that exceeds a cracking pressure of the check valve, the check valve is configured to open and permit ambient air to enter the vial via the adaptor, thereby substantially equalizing the pressure inside the vial relative to the pressure outside the vial; and

    wherein a rigid housing does not entirely contain the regulator enclosure in the second orientation.

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