One piece sealing reservoir for an insulin infusion pump
First Claim
1. A fluid reservoir assembly for engaging a pump, the pump having a housing, a reservoir chamber, a threaded, cylindrical reservoir housing chamber opening having a sealing member, and a piston to act on the fluid reservoir assembly when the fluid reservoir assembly is in the reservoir chamber, the fluid reservoir assembly comprising:
- a one-piece barrel, the one-piece barrel including a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including a neck portion integral with the barrel portion, the neck portion including integral threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including a cylindrical sealing surface radially outward of the neck portion threads and configured to lay adjacent the interior of the reservoir housing chamber opening of the pump housing and engage the sealing member, the cylindrical sealing surface integral with the neck;
a plunger dimensioned for slideable receipt into the open end of the one-piece barrel;
wherein the one-piece barrel further includes walls, the walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement;
wherein the port is substantially covered with a filter medium capable of filtering water from a gas and allowing the passage of the gas therethrough; and
further comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface.
3 Assignments
0 Petitions
Accused Products
Abstract
A novel one-piece fluid reservoir assembly for use in conjunction with an insulin infusion pump. The single piece fluid reservoir assembly includes a barrel body, a male luer fitting integral with the barrel body, a sealing surface integral with the barrel body, the sealing surface for sealing against the pump housing when the fluid reservoir assembly is inserted into the pump housing. Further, the barrel includes, as part of the one-piece fluid reservoir assembly, threads for engagement with threads on an opening in the fluid pump so that the fluid assembly can be inserted into the fluid pump, engage the threads and rotation therewith will locate the fluid reservoir assembly within the pump. Thereafter, a piston in the pump may be incrementally advanced to act upon a plunger in the barrel assembly to force a fluid within the barrel assembly through the male luer fitting and through a conduit engaged therewith to a remote infusion set.
96 Citations
12 Claims
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1. A fluid reservoir assembly for engaging a pump, the pump having a housing, a reservoir chamber, a threaded, cylindrical reservoir housing chamber opening having a sealing member, and a piston to act on the fluid reservoir assembly when the fluid reservoir assembly is in the reservoir chamber, the fluid reservoir assembly comprising:
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a one-piece barrel, the one-piece barrel including a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including a neck portion integral with the barrel portion, the neck portion including integral threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including a cylindrical sealing surface radially outward of the neck portion threads and configured to lay adjacent the interior of the reservoir housing chamber opening of the pump housing and engage the sealing member, the cylindrical sealing surface integral with the neck; a plunger dimensioned for slideable receipt into the open end of the one-piece barrel; wherein the one-piece barrel further includes walls, the walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement; wherein the port is substantially covered with a filter medium capable of filtering water from a gas and allowing the passage of the gas therethrough; and further comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A fluid reservoir assembly for engaging a pump, the pump having a housing, a reservoir chamber, a threaded, cylindrical reservoir housing chamber opening with a sealing member, and a piston to act on the fluid reservoir assembly when the fluid reservoir is in the reservoir chamber, the fluid reservoir assembly comprising:
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a one-piece barrel, the one-piece barrel including; a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including; a neck portion integral with the barrel portion, the neck portion including threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including; a cylindrical sealing surface radially outward of the neck portion threads and configured to lay adjacent the interior of the reservoir housing chamber opening of the pump housing and engage the sealing member, the cylindrical sealing surface integral with the neck, wherein the one-piece barrel further includes; a plunger dimensioned for slideable receipt into the open end of the one-piece barrel, the plunger including a threaded interior portion, the plunger adapted to receive “
O”
rings;a locking assembly wherein the locking assembly includes detents on the walls of the cylindrical sealing surface for engaging walls defining the reservoir housing chamber opening; a rod having a handle, the rod with a threaded portion, the threaded portion of the rod engageable with the threaded interior portion of the plunger; walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement, wherein the port is substantially covered with a filter medium capable of filter water from a gas and allowing the passage of the gas therethrough, wherein the filter medium is hydrophobic, wherein the opening of the removed end of the luer fitting is between 0.003 and 0.020 inches in diameter, wherein the cylindrical sealing surface of the one-piece barrel is dimensioned to contact an “
O”
ring on the cylindrical reservoir chamber opening; andfurther comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface.
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10. A kit for providing insulin to a patient through an infusion set engaged with the patient, the kit comprising:
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a container having insulin therein, the container including a sealing septum; a needle assembly having a female luer fitting and a needle dimensioned to puncture the sealing septum of the container; and a pump having a reservoir chamber and a reservoir chamber opening, the reservoir chamber opening with a sealing member therein; a one-piece barrel, the one-piece barrel including a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer dimensioned to receive the female luer fitting of the needle assembly and fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including a neck portion integral with the barrel portion, the neck portion including integral threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including a cylindrical sealing surface radially outward of the neck portion threads and configured to lay adjacent the interior of the reservoir housing chamber opening of the pump housing and engage the sealing member, the cylindrical sealing surface integral with the neck; a plunger dimensioned for slideable receipt into the open end of the one-piece barrel; wherein the one-piece barrel further includes walls, the walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement; wherein the port is substantially covered with a filter medium capable of filtering water from a gas and allowing the passage of the gas therethrough; and further comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface.
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11. An assembly for the delivery of insulin to a diabetic patient, the assembly comprising:
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a pump, the pump having a reservoir chamber, a drive piston, and a threaded reservoir chamber opening with a sealing member; a one-piece barrel, the one-piece barrel including a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including a neck portion integral with the barrel portion, the neck portion including integral threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including a cylindrical sealing surface radially outward of the neck portion threads and configured to lay adjacent the interior of the reservoir housing chamber opening of the pump housing and engage the sealing member, the cylindrical sealing surface integral with the neck; a plunger dimensioned for slideable receipt into the open end of the one-piece barrel; wherein the one-piece barrel further includes walls, the walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement; wherein the port is substantially covered with a filter medium capable of filtering water from a gas and allowing the passage of the gas therethrough; and further comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface.
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12. A fluid delivery system, the system comprising:
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a pump including a housing, a reservoir chamber, a threaded, cylindrical reservoir housing chamber opening having a sealing member, and a piston to act on a one piece barrel when the one piece barrel is in the reservoir chamber; the one-piece barrel including a cylindrical barrel portion having a barrel diameter and having a first open end and a second end, a male luer fitting integral with the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the one piece barrel including a neck portion integral with the barrel portion, the neck portion including integral threads dimensioned to engage the threads of the reservoir housing chamber opening, the one piece barrel including a cylindrical sealing surface configured to lay adjacent the interior reservoir housing chamber opening of the pump housing and engaging the sealing member, the cylindrical sealing surface integral with the neck; and a plunger dimensioned for slideable receipt into the open end of the one-piece barrel; wherein the one-piece barrel further includes walls, the walls defining a port, the port dimensioned and located on the one-piece barrel such that the interior of said housing is vented when said fluid reservoir assembly is engaged therewith and said cylindrical sealing surface is laying adjacent in fluid sealing relation to the housing chamber opening in airtight engagement; wherein the port is substantially covered with a filter medium capable of filtering water from a gas and allowing the passage of the gas therethrough; and further comprising a wall extending from an external surface of the port and substantially surrounding the port, wherein the port is covered with the filter medium adjacent the external surface.
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Specification