Fluid delivery apparatus with reservior fill assembly

A device for use in infusing medicinal fluid into a patient at a controlled rate comprising:

• (a) a fluid dispenser including:
• (i) a base having, an upper surface and a lower surface, said lower surface having a dispenser connector comprising circumferentially spaced slots;
• (ii) a stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said dispenser connector and an outlet, said stored energy means comprises at least one prestressed, distendable elastomeric membrane superimposed over said base, said membrane being further distendable as a result of pressure imparted by the fluids to be infused to establish internal stresses, said stresses tending to move said member toward a less distended configuration;
• (iii) an outlet port in communication with said outlet of said fluid reservoir for dispensing fluids from the device;
• and
• (iv) dispenser flow control means for controlling fluid flow toward said outlet port;
• and
• (b) a reservoir fill assembly interconnectable with said fluid dispenser for filling said fluid reservoir thereof, said reservoir fill assembly comprising:
• (i) a container subassembly including a container having a body portion, a fluid chamber, and first and second open ends;
• closure means for sealably closing said first open end of said container;
• and a plunger telescopically movable within said container from a first location proximate said second open end to a second, spaced-apart location;
• (ii) an adapter subassembly comprising a hollow housing having inner and outer walls defining an annular passageway therebetween, said inner wall defining a first open end for telescopically receiving a part of said body portion of said container of said container subassembly and a second end, said hollow housing further including an adapter connector comprising circumferentially spaced tabs mateably interconnectable with said dispenser connector for removably interconnecting said adapter subassembly with said fluid dispenser;
• and
• (iii) an adapter sleeve mateable with said adapter subassembly including pusher means for engagement with said plunger of said container subassembly to move said plunger within said container between said first and second locations.

A dispensing apparatus for dispensing fluid comprising:

• (a) a fluid dispenser comprising a housing assembly having a fluid outlet port and including:
• (i) a base having an upper surface defining an ullage and a lower surface, a fluid inlet, a fluid outlet, and a dispenser connector provided on said lower surface;
• (ii) a membrane capture ring connected to said base;
• (iii) a cover connected to said membrane capture ring;
• (iv) a stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said dispenser connector and an outlet in communication with said fluid outlet of said base, said stored energy means comprising a distendable member having a peripheral portion captured between said base and said capture ring, said member being distendable as a result of pressure imparted by the fluids to be infused to establish internal stresses, said stresses tending to move said member toward a less distended configuration;
• and
• (v) fluid actuated indicator means disposed intermediate said fluid outlet of said reservoir and said fluid outlet port of said housing for visually indicating fluid flow from said fluid reservoir;
• and
• (b) a reservoir fill assembly interconnectable with said fluid dispenser for filling said fluid reservoir thereof, said reservoir fill assembly comprising:
• (i) a container subassembly including a container having a body portion, a fluid chamber, and first and second open ends;
• a pierceable septum for sealably closing said first open end of said container and a plunger telescopically movable within said container from a first location proximate said second open end to a second, spaced-apart location;
• (ii) an adapter subassembly comprising a hollow housing having an annular passageway and a first open end for telescopically receiving a part of said body portion of said container of said container subassembly and a second end provided with a hollow cannula for piercing said pierceable septum, said hollow housing further including:
• a. an adapter connector mateably interconnectable with said dispenser connector of said base of said housing assembly for removably interconnecting said adapter subassembly with said fluid dispenser;
• and
• b. fill flow control means for controlling fluid flow from said container subassembly toward said fluid reservoir;
• and
• (iii) an adapter sleeve telescopically receivable with said annular passageway of said hollow housing said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.

A dispensing apparatus for dispensing fluid to a patient comprising:

• (a) a fluid dispenser comprising a housing assembly having a fluid outlet port and including:
• (i) a base having an upper surface defining an ullage and a lower surface, a fluid inlet, a fluid outlet, and a dispenser connector provided on said lower surface;
• (ii) a membrane capture ring connected to said base;
• (iii) a cover connected to said membrane capture ring;
• (iv) a stored energy means for forming, in conjunction with said base a fluid reservoir having an inlet in communication with said dispenser connector and an outlet in communication with said fluid outlet of said base, said stored energy means comprising a distendable member having a peripheral portion captured between said base and said capture ring, said member being distendable as a result of pressure imparted by the fluids to be infused to establish internal stresses, said stresses tending to move said member toward a less distended configuration;
• (v) dispenser flow control means for controlling fluid flow toward said fluid outlet port of said housing, said dispenser flow control means comprising flow rate control means for controlling the rate of fluid flow toward said outlet port of said housing;
• and
• (vi) infusion means comprising a delivery line assembly connected to said outlet port of said housing for delivering fluid to the patient;
• and
• (b) a reservoir fill assembly interconnectable with said fluid dispenser for filling said fluid reservoir thereof, said reservoir fill assembly comprising:
• (i) a container subassembly including a container having a body portion, a fluid chamber, and first and second open ends;
• a pierceable septum for sealably closing said first open end of said container and a plunger telescopically movable within said container from a first location proximate said second open end to a second, spaced-apart location;
• (ii) an adapter subassembly comprising a hollow housing having an annular passageway and a first open end for telescopically receiving a part of said body portion of said container of said container subassembly and a second end provided with a hollow cannula for piercing said pierceable septum, said hollow housing further including:
• a. an adapter connector mateably interconnectable with said dispenser connector of said base of said housing assembly for removably interconnecting said adapter subassembly with said fluid dispenser;
• and
• b. fill flow control means for controlling fluid flow from said container subassembly toward said fluid reservoir;
• and
• (iii) an adapter sleeve telescopically receivable within said annular passageway of said hollow housing said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.