Reservoir pressure equalization systems and methods
First Claim
1. A base assembly for a fluid delivery system comprising a fluid reservoir with a fluid vent for expelling pressurized fluidic media from the fluid reservoir, the base assembly comprising:
- a proximal portion;
a distal portion formed with a fluid delivery port to accommodate transfer of fluidic media;
a valve to cooperate with the fluid delivery port;
a recess to accommodate the fluid reservoir in a first state of the base assembly, and to accommodate the valve in a second state of the base assembly; and
a sealing arrangement that cooperates with the valve and the fluid reservoir;
wherein, in the first state, the sealing arrangement cooperates with the fluid reservoir to form a fluid tight chamber in fluid communication with the fluid vent of the fluid reservoir; and
wherein, in the second state, the sealing arrangement cooperates with the valve to inhibit access to the fluid delivery port.
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Accused Products
Abstract
Various embodiments of the present invention are directed to equalizing pressure in a reservoir containing fluidic media, possibly due to imperfect installation of the reservoir or an external influence such as an altitude or a temperature change. In various embodiments, fluidic media may be expelled from the reservoir through a needle and contained in an interior volume of a pierceable member before the needle pierces the pierceable member to establish a flow path to a user. In other embodiments, fluidic media may be expelled through a port of the reservoir into a chamber or to the outside environment. In further embodiments, fluidic media may be expelled through a channel in a plunger head and out a passage in the reservoir when the channel and passage are aligned. In other embodiments, fluidic media may be expelled through a valve, and the valve may be pierceable by a needle to establish a flow path to the user.
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Citations
20 Claims
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1. A base assembly for a fluid delivery system comprising a fluid reservoir with a fluid vent for expelling pressurized fluidic media from the fluid reservoir, the base assembly comprising:
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a proximal portion; a distal portion formed with a fluid delivery port to accommodate transfer of fluidic media; a valve to cooperate with the fluid delivery port; a recess to accommodate the fluid reservoir in a first state of the base assembly, and to accommodate the valve in a second state of the base assembly; and a sealing arrangement that cooperates with the valve and the fluid reservoir; wherein, in the first state, the sealing arrangement cooperates with the fluid reservoir to form a fluid tight chamber in fluid communication with the fluid vent of the fluid reservoir; and wherein, in the second state, the sealing arrangement cooperates with the valve to inhibit access to the fluid delivery port. - View Dependent Claims (2, 3, 4, 5)
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6. A base assembly for a fluid delivery system comprising a fluid reservoir with a fluid vent for expelling pressurized fluidic media from the fluid reservoir, the base assembly comprising:
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a proximal portion; a distal portion formed with a fluid delivery port to accommodate transfer of fluidic media; a valve to cooperate with the fluid delivery port; a recess to accommodate the fluid reservoir in a first state of the base assembly, and to accommodate the valve in a second state of the base assembly; and a sealing arrangement that cooperates with the valve and the fluid reservoir. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A base assembly for a fluid delivery system comprising a fluid reservoir with a fluid vent for expelling pressurized fluidic media from the fluid reservoir, the base assembly comprising:
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a proximal portion; a distal portion; an intermediate portion between the proximal portion and the distal portion; a fluid delivery port in the intermediate portion; a valve movable between an extended position and a retracted position, wherein the valve is located in the proximal portion, the intermediate portion, and the distal portion when in the extended position, and wherein the valve is removed from the intermediate portion and distal portion when in the retracted position; a recess to accommodate the fluid reservoir in a first state of the base assembly, and to accommodate the valve in a second state of the base assembly; and a sealing arrangement that cooperates with the valve and the fluid reservoir. - View Dependent Claims (18, 19, 20)
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Specification