Pressure-regulating vial adaptors and methods
First Claim
Patent Images
1. A vial adaptor comprising:
- a housing member comprising a piercing member having a proximal end and a distal end, the distal end of the piercing member configured to pierce the septum of a vial;
a connector configured to couple the housing member with the vial;
an extractor channel formed in the housing member, the extractor channel configured to facilitate withdrawal of a medical fluid from the vial when the adaptor is coupled to the vial;
a regulator channel formed in the piercing member, the regulator channel configured to facilitate a flow of a regulating fluid therethrough during withdrawal of the medical fluid; and
an expansion member connected with an external surface of the proximal end of the piercing member and in fluid communication with the regulator channel, the expansion member configured to contact the septum during insertion of the piercing member into the vial and to expand to receive the flow of the regulating fluid as the medical fluid is withdrawn from the vial.
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Accused Products
Abstract
In certain embodiments, a vial adaptor comprises a housing member, a connector configured to couple the adaptor with a vial, a regulator channel, and an extractor channel formed in the housing member. The extractor channel is configured to facilitate withdrawal of fluid from the vial when the adaptor is coupled to the vial. The regulator channel is configured to facilitate flow of a regulating fluid to compensate for changes in volume of a medical fluid in the vial. In some embodiments, an expansion member is disposed on the housing member and is configured to expand and contract in accordance with changes in the volume of a medical fluid in the vial.
422 Citations
55 Claims
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1. A vial adaptor comprising:
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a housing member comprising a piercing member having a proximal end and a distal end, the distal end of the piercing member configured to pierce the septum of a vial; a connector configured to couple the housing member with the vial; an extractor channel formed in the housing member, the extractor channel configured to facilitate withdrawal of a medical fluid from the vial when the adaptor is coupled to the vial; a regulator channel formed in the piercing member, the regulator channel configured to facilitate a flow of a regulating fluid therethrough during withdrawal of the medical fluid; and an expansion member connected with an external surface of the proximal end of the piercing member and in fluid communication with the regulator channel, the expansion member configured to contact the septum during insertion of the piercing member into the vial and to expand to receive the flow of the regulating fluid as the medical fluid is withdrawn from the vial. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of maintaining a substantially constant pressure within a vial, the method comprising:
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coupling a housing member to a vial, the housing comprising a piercing member; piercing a septum of the vial with a distal end of the piercing member, wherein piercing the septum of the vial with the distal end of the piercing member comprises contacting the septum with an expansion member; permitting a medical fluid to flow through an extractor channel formed in the housing member, the extractor channel configured to facilitate withdrawal of a medical fluid from the vial when the adaptor is coupled to the vial; and permitting a regulating fluid to flow through a regulator channel during withdrawal of the medical fluid, the regulator channel formed in the piercing member, the regulating fluid being received in the expansion member, the expansion member being connected to an external surface of the piercing member at a proximal end of the piercing member, the expansion member being configured to expand as the medical fluid is withdrawn. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A vial adaptor comprising:
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a housing member comprising a piercing member having a proximal end, a distal end, and a plurality of annular ribs, the distal end of the piercing member configured to pierce the septum of a vial; a connector configured to couple the housing member with the vial; an extractor channel formed in the housing member, the extractor channel configured to facilitate withdrawal of a medical fluid from the vial when the adaptor is coupled to the vial; a regulator channel formed in the piercing member, the regulator channel configured to facilitate a flow of a regulating fluid therethrough during withdrawal of the medical fluid; and an expansion member connected with an external surface of the proximal end of the piercing member and in fluid communication with the regulator channel, the expansion member configured to expand to receive the flow of the regulating fluid as the medical fluid is withdrawn from the vial. - View Dependent Claims (53, 54, 55)
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Specification