Fluid dispenser with fill adapter
First Claim
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1. A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:
- (a) an elongated housing having walls defining an internal chamber;
(b) a support assembly connected to said housing and including an elongated body disposed within said internal chamber, said body having an inlet passageway and an outlet passageway in communication with said fluid delivery passageway;
(c) an elongated tubular shaped elastomeric member connected proximate its ends to said body, said elastomeric member having a central portion disposed within said internal chamber of said housing and overlaying said inlet and said outlet passageways, said central portion of said elastomeric member being distendable by fluid flowing through said inlet passageway from a first position in proximity with said support to a second position to form a fluid reservoir;
(d) fill means interconnected with said support assembly for filling said fluid reservoir; and
(e) flow rate control means carried by said housing for controlling the rate of fluid flow from said reservoir toward said fluid delivery passageway of said housing, said flow rate control means comprising a control member rotatably connected to said housing, said control member having first and second spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said delivery passageway and a second position wherein said second flow restrictor is aligned with said delivery passageway.
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Abstract
An elastomeric bladder type infusion device for delivering a beneficial agent, such as a drug to a patient at substantially a constant rate. The device uniquely includes an adjustable flow rate control mechanism for adjusting the rate at which fluid flows from the device. In one form of the invention, the apparatus also includes a novel flow indicator for visually indicating fluid flow from the device.
40 Citations
17 Claims
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1. A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:
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(a) an elongated housing having walls defining an internal chamber; (b) a support assembly connected to said housing and including an elongated body disposed within said internal chamber, said body having an inlet passageway and an outlet passageway in communication with said fluid delivery passageway; (c) an elongated tubular shaped elastomeric member connected proximate its ends to said body, said elastomeric member having a central portion disposed within said internal chamber of said housing and overlaying said inlet and said outlet passageways, said central portion of said elastomeric member being distendable by fluid flowing through said inlet passageway from a first position in proximity with said support to a second position to form a fluid reservoir; (d) fill means interconnected with said support assembly for filling said fluid reservoir; and (e) flow rate control means carried by said housing for controlling the rate of fluid flow from said reservoir toward said fluid delivery passageway of said housing, said flow rate control means comprising a control member rotatably connected to said housing, said control member having first and second spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said delivery passageway and a second position wherein said second flow restrictor is aligned with said delivery passageway. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:
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(a) an elongated housing having walls defining an internal chamber; (b) a support assembly connected to said housing and including an elongated body disposed within said the internal chamber, said body having an inlet passageway and an outlet passageway in communication with said fluid delivery passageway and including first and second chambers; (c) an elongated tubular shaped elastomeric member connected proximate its ends to said elongated body, said elastomeric member having a central portion disposed within said internal chamber of said housing and overlaying said inlet and outlet passageways, said central portion of said elastomeric member being distendable by fluid flowing through said inlet fluid passageway from a first position in proximity with said support to a second position to form a fluid reservoir; (d) a fill means interconnected with said elongated body for filling said reservoir, said fill means comprising a container telescopically received within said first chamber of said body; (e) flow rate control means carried by said housing for controlling the rate of fluid flow from said reservoir toward said outlet passageway, said flow rate control means comprising a control member rotatably connected to said housing, said control member having first and second spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said outlet passageway to a second position wherein said second flow restrictor is aligned with said outlet passageway said first flow restrictor comprising a first porous frit and said second flow restrictor comprising a second porous frit; and (f) fluid actuated indicator means disposed intermediate said reservoir and said delivery passageway for indicating fluid flow through said delivery passageway. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A fluid delivery apparatus having a fluid delivery passageway, said apparatus comprising:
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(a) an elongated housing having walls defining an internal chamber; (b) a support assembly connected to said housing and including an elongated body disposed within said the internal chamber, said body having an inlet passageway and an outlet passageway in communication with said fluid delivery passageway and including first and second chambers; (c) an elongated tubular shaped elastomeric member connected proximate its ends to said elongated body, said elastomeric member having a central portion disposed within said internal chamber of said housing and overlaying said inlet and outlet passageways, said central portion of said elastomeric member being distendable by fluid flowing through said first fluid passageway from a first position in proximity with said support to a second position to form a fluid reservoir; (d) a fill assembly interconnected with said elongated body for filling said reservoir, said fill means comprising; (i) a container telescopically received within said first chamber of said body; (ii) a plunger telescopically movable within said container from a first location proximate said open end to a second spaced apart location; and (iii) pusher means disposed within said container for engagement with said plunger of said container assembly to move said plunger within said container between first and second locations; (e) flow rate control means carried by said housing for controlling the rate of fluid flow from said reservoir toward said outlet passageway, said flow rate control means comprising a control member rotatably connected to said housing, said control member having first and second spaced apart flow restrictors, said control member being rotatable from a first position wherein said first flow restrictor is aligned with said outlet passageway to a second position wherein said second flow restrictor is aligned with said outlet passageway said first flow restrictor comprising a first porous frit and said second flow restrictor comprising a second porous frit; and (f) looking means for locking said control member against rotation relative to said housing. - View Dependent Claims (14, 15, 16, 17)
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Specification