Apparatus for intravenous administration of a fluid from a dual-chamber flask having an internal upset-table septum normally separating two axially-in-line chambers and having a pierceable end stopper

Claim 2

Apparatus for intravenous administration of a fluid, including in combination: a dual chamber flask having an internal upsettable septum normally separating two axially-in-line chambers and having a pierceable stopper at one end spaced from said septum, a drip meter assembly having a vessel with a tube adapter on a lower end thereof and a closure member on an upper end, said closure member having an upstanding shank with a pointed upper end and two passages therethrough, each having an opening adjacent said upper end axially displaced from and on opposite sides of the centerline of said shank, a first said passage communicating with a filtered air inlet at one side of said closure member, a second said passage continuing down through a tube portion depending from said closure member into the upper end of the transparent vessel and having a drip outlet, and an air inletting auxiliary spike having an elongated solid stem with a solid non-coring point at one end, an inlets portion at the other end, and a base portion therebelow having an interior socket fitting over said shank, said inlets portion having two through openings, each communicating directly with one of said two passages, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum, said fluid then flowing through said inlets portion and said second passage into said drip meter, while air flows in through said filtered inlet and said first passage into said flask closely adjacent the pierced stopper, so that inletted air bubbles up through the solution in said stopper and agitates it.

Claim 3

The apparatus of claim 1 having a rubber connector fitting around said tube adapter and around a succeeding tube, said connector having an enlarged central pumping portion between its end portions.

Claim 4

Apparatus for intravenous administration of a fluid, including in combination: a dual chamber flask having an internal upsettable septum normally separating two axially-in-line chambers and having a pierceable stopper at one end spaced from said septum, a drip meter assembly having a transparent vessel with a tube adapter on a lower end thereof and a closure member on an upper end, said closure member having an upstanding generally cylindrical shank with a conical pointed upper end and two passages therethrough, each having an opening adjacent said upper end axially displaced from and on opposite sides of the centerline of said shank and therefore opening on opposite sides of the point, a first said passage communicating with a filtered air inlet at one side of said closure member, the second said passage communicating with a tube portion depending from said closure member and axial of said vessel and having a drip outlet, and an air inletting auxiliary spike having a generally cylindrical elongated solid stem with a solid non-coring point at one end, an enlarged lower inlets portion therebelow, and a shouldered base portion below that having an interior axial bore with a pointed conical upper end fitting over said generally cylindrical shank, seating its point and in sealing relation with its exterior surface, said inlets portion having two through openings, each communicating directly with one of said two passages, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum, said fluid then flowing through said inlets portion and said second passage into said drip meter, while air flows in through said filtered Inlet and said first passage into said flask at a level closely adjacent the pierced stopper.

Claim 5

Apparatus for intravenous administration of a fluid, including in combination: a dual chamber flask having an internal upsettable septum normally separating two axially-in-line chambers and having a pierceable stopper at one end spaced from said septum, a drip meter assembly having a transparent vessel with a tube adapter on a lower end thereof and a closure member on an upper end, said closure member having an upstanding generally cylindrical shank with a conical pointed upper end and two passages therethrough, each having an opening adjacent said upper end axially displaced from and on opposite sides of the centerline of said shank and therefore opening on opposite sides of the point, a first said passage communicating with a filtered air inlet at one side of said closure member, the second said passage communicating with a tube portion depending from said closure member and axial of said vessel and having a drip outlet, and an air inletting auxiliary spike having a generally cylindrical elongated solid stem with a solid non-coring point at one end, an enlarged lower inlets portion therebelow, and a shouldered base portion below that having an interior axial bore with a pointed conical upper end fitting over said generally cylindrical shank, seating its point and in sealing relation with its exterior surface, said inlets portion having two through openings, each communicating directly with one of said two passages, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum, said fluid then flowing through said inlets portion and said second passage into said drip meter, while air flows in through said filtered Inlet and said first passage into said flask at a level closely adjacent the pierced stopper.

Claim 6

A one-piece supplemental spike for use with a dual chamber flask having an internal upsettable septum normally separating two axially-in-line chambers and having a pierceable stopper at one end spaced from said septum, for adapting thereto a drip meter assembly having a transparent vessel with a tube adapter on a lower end thereof and a closure member on an upper end having an upstanding shank with a pointed upper end, said shank being too short to engage said septum if it were to pierce said stopper, said shank having two passages therethrough, each having an opening adjacent said upper end axially displaced from and on opposite sides of the centerline of said shank, a first said passage for inlet air and a second said passage for conducting liquid into the vessel, said spike comprising: an elongated solid stem with a solid non-coring point at one end, and integral with said stem, an inlets portion at the other end, and a shouldered base portion therebelow forming the end of said spike and having an interior socket for fitting over said shank, said socket terminating just above said base portion said inlets portion having two through openings opposite each other, each adapted to communicate directly with one of said two passages, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum.

Claim 7

A one-piece supplemental spike for use with a dual chamber flask having an internal upsettable septum normally separating two axially-in-line chambers and having a pierceable stopper at one end spaced from said septum, for adapting thereto a drip meter assembly having a transparent vessel with a tube adapter on a lower end thereof and a closure member on an upper end having an upstanding shank with a pointed upper end, said shank being too short to engage said septum if it were to pierce said stopper, said shank having two passages therethrough, each having an opening adjacent said upper end axially displaced from and on opposite sides of the centerline of said shank, a first said passage for inlet air and a second said passage for conducting liquid into the vessel, said spike comprising: an elongated solid stem with a solid non-coring point at one end, and integral with said stem, an inlets portion at the other end, and a shouldered base portion therebelow forming the end of said spike and having an interior socket for fitting over said shank, said socket terminating just above said base portion said inlets portion having two through openings opposite each other, each adapted to communicate directly with one of said two passages, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum.

Claim 8

The spike of claim 4 wherein said shank, bore, and stem are cylindrical.

Claim 9

A one-piece air inletting spike for addition to the stopper piercer of a drip meter assembly to adapt to a dual chamber flask, comprising: an elongated solid stem with an integral solid non-coring point at one end and an enlarged inlets portion at the other end just above a shouldered base portion forming the end of said spike, socket means at the lower end of said spike for fitting over said stopper piercer, seating its point and in sealing relation with its exterior surface, said inlets portion having two directly opposite through openings, one for air inlet and one for liquid outlet, for communicating with said stopper piercer, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum.

Claim 10

A one-piece air inletting spike for addition to the stopper piercer of a drip meter assembly to adapt to a dual chamber flask, comprising: an elongated solid stem with an integral solid non-coring point at one end and an enlarged inlets portion at the other end just above a shouldered base portion forming the end of said spike, socket means at the lower end of said spike for fitting over said stopper piercer, seating its point and in sealing relation with its exterior surface, said inlets portion having two directly opposite through openings, one for air inlet and one for liquid outlet, for communicating with said stopper piercer, the length of said spike above said shoulder being longer than the distance between said stopper and said septum, so that said spike can enter said stopper and upset said septum.

Claim 11

A one-piece air inletting spike comprising: an elongated solid cylindrical stem with a solid non-coring point at one end and an enlarged inlets portion at the other end, said inlets portion having two directly opposite through openings, one for air inlet and one for liquid outlet, and socket means at said other end of said spike terminating at said inlets portion, said solid cylindrical stem constituting more than half of the length of said spike.

Claim 12

A one-piece air inletting spike comprising: an elongated solid cylindrical stem with a solid non-coring point at one end and an enlarged inlets portion at the other end, said inlets portion having two directly opposite through openings, one for air inlet and one for liquid outlet, and socket means at said other end of said spike terminating at said inlets portion, said solid cylindrical stem constituting more than half of the length of said spike.