Medicament dispenser

• US 5,993,421 A
• Filed: 12/16/1997
• Issued: 11/30/1999
• Est. Priority Date: 12/02/1994
• Status: Expired due to Fees

• Current Assignee: Pescadero Beach Holdings Corporation
• Original Assignee: Science Incorporated
• Inventors: Kriesel, Marshall S
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US08/992,126
• Time in Patent Office: 714 Days
• Field of Search: 604/131, 604/132, 604/184, 604/185, 604/140, 604/141, 604/157, 604/135, 604/151, 128/DIG. 12
• US Class Current: 604/132
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 2209/045 for filling, e.g. for filling reservoirs
• CPC Class Codes: A61M 2209/06 Packaging for specific medical equipment
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/152 pressurised by contraction of elastic reservoirs containers for dispensing contents by contraction of an elastic bag provided therein, in general B65D83/0061
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: Y10S 128/12 Pressure infusion

Abstract

A compact fluid dispenser for use in controllably dispensing fluid medicaments and a cooperating reservoir fill assembly for controllably filling the fluid reservoir of the fluid dispenser. The fluid dispenser component includes a novel stored energy source in the form of an expandable, elastomeric member of unique construction that provides the force necessary to continuously and substantially uniformly expel fluid from the reservoir of the dispenser component. The fluid dispenser component further includes a fluid flow control assembly that filters and precisely controls the flow of the medicament solution from the reservoir of the dispenser container.

Claims

1. A dispensing apparatus for dispensing fluid comprising:

(a) a fluid dispenser comprising;

(i) a housing assembly including a housing having a fluid reservoir, said reservoir having a fluid inlet for filling said reservoir with fluid and a fluid outlet for permitting fluid flow from said fluid reservoir, said housing assembly having a dispenser connector; and

(ii) stored energy means for acting upon the fluid contained within said reservoir to cause the fluid to controllably flow through said outlet, said stored energy means comprising a compressively deformable, elastomeric member carried within said reservoir, said elastomeric member being expandable to cause fluid flow from said reservoir toward said fluid outlet; and

(b) a reservoir fill assembly for filling said reservoir with the fluid to be dispensed, 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 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, said hollow housing further including an adapter connector mateably interconnectable with said dispenser connector for removably interconnecting said adapter subassembly with said fluid dispenser; and

(iii) an adapter sleeve telescopically receivable with said annular passageway said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.

2. An apparatus as defined in claim 1 in which said housing assembly further includes a dispensing head assembly connected to said housing, said dispenser connector being formed on said dispensing head assembly.

3. An apparatus as defined in claim 1 in which said elastomeric member comprises a flexible, resilient, polymeric member.

4. An apparatus as defined in claim 1 in which said elastomeric member comprises a cellular mass.

5. An apparatus as defined in claim 1 further including locking means for lockably interconnecting together said adapter sleeve and said adapter subassembly.

6. An apparatus as defined in claim 1 in which said fluid dispenser further includes flow control means disposed between said reservoir and said fluid outlet for controlling fluid flow from said reservoir.

7. An apparatus as defined in claim 6 in which said flow control means comprises fluid flow rate control means for controlling the rate of the fluid flow from said reservoir toward said fluid outlet.

8. An apparatus as defined in claim 6 in which said flow control means comprises filter means for filtering particulate matter from fluid flowing from said reservoir.

9. An apparatus as defined in claim 6 in which said flow control means comprises a filter means for filtering fluid flowing from said reservoir and a cooperating rate control member for controlling the rate of fluid flow from said reservoir.

10. A dispensing apparatus for dispensing fluid comprising:

(a) a fluid dispenser comprising;

(i) a housing assembly including;

a. a housing having a fluid reservoir, said reservoir having a fluid inlet for filling said reservoir with fluid and a fluid outlet for permitting fluid flow from said fluid reservoir;

b. a fill and dispensing means connected to said housing for filing said fluid reservoir and for dispensing fluid therefrom, said fill and dispensing means comprising a dispensing head assembly including a dispensing head and a flow control means carried by said dispensing head for controlling fluid flow into and out of said reservoir and a dispenser connector formed on said dispensing head assembly; and

(ii) stored energy means for acting upon the fluid contained within said reservoir to cause the fluid to controllably flow through said outlet, said stored energy means comprising a compressively deformable, resilient member carried within said reservoir, said resilient member being expandable to cause fluid flow from said reservoir toward said fluid outlet; and

(b) a reservoir fill assembly for filling said reservoir with the fluid to be dispensed, said reservoir fill assembly comprising;

(i) a container having a fluid chamber, closure means for sealably closing said fluid chamber, and a plunger telescopically movable within said fluid chamber from a first location 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 reservoir fill assembly and a second end, said hollow housing further including an adapter connector mateably interconnectable with said dispenser connector for removably interconnecting said adapter subassembly with said fluid dispenser; and

(iii) an adapter sleeve telescopically receivable with said annular passageway said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.

11. An apparatus as defined in claim 10 in which said flow control means further comprises valve means carried by said dispensing head for controlling fluid flow into said reservoir.

12. An apparatus as defined in claim 10 in which said flow control means further comprises a pierceable septum carried by said dispensing head for controlling fluid flow into said reservoir.

13. An apparatus as defined in claim 10 in which said flow control means comprises flow control elements disposed between said reservoir and said fluid outlet for controlling fluid flow from said reservoir.

14. An apparatus as defined in claim 13 in which said flow control elements include a fluid flow rate control means for controlling the rate of the fluid flow from said reservoir toward said fluid outlet.

15. An apparatus as defined in claim 13 in which said flow control elements include a filter means for filtering particulate matter from fluid flowing from said reservoir.

16. An apparatus as defined in claim 13 in which said elastomeric member comprises a flexible polymeric member.

17. An apparatus as defined in claim 13 in which said elastomeric member comprises a polymeric cellular mass.

18. An apparatus as defined in claim 13 further including locking means for lockably interconnecting together said adapter sleeve and said adapter subassembly.

19. An apparatus as defined in claim 18 in which said locking means comprise a plurality of upstanding teeth formed on said adapter sleeve.

20. A dispensing apparatus for dispensing fluid comprising:

(a) a fluid dispenser comprising;

(i) a housing assembly including;

a. a housing having a fluid reservoir, said reservoir having a fluid inlet for filling said reservoir with fluid and a fluid outlet for permitting fluid flow from said fluid reservoir;

b. a fill and dispensing means connected to said housing for filing said fluid reservoir and for dispensing fluid therefrom, said fill and dispensing means comprising a dispensing head assembly including a dispensing head and a flow control means carried by said dispensing head for controlling fluid flow into and out of said reservoir and a dispenser connector formed on said dispensing head assembly said dispenser connector comprising a plurality of spaced apart locking ears; and

(ii) stored energy means for acting upon the fluid contained within said reservoir to cause the fluid to controllably flow through said outlet, said stored energy means comprising a compressively deformable, elastomeric, polymeric member carried within said reservoir, said elastomeric, polymeric member being expandable to cause fluid flow from said reservoir toward said fluid outlet; and

(b) a reservoir fill assembly for filling said reservoir with the fluid to be dispensed, said reservoir fill assembly comprising;

(i) a container subassembly including a container having a fluid chamber, a pierceable septum sealably closing said fluid chamber, and a plunger telescopically movable within said fluid chamber from a first location to a second, spaced-apart location;

(ii) an adapter subassembly comprising;

a. a hollow housing having an annular passageway and an internal chamber having a first open end for telescopically receiving a part of said body portion of said container of said reservoir fill assembly and a second end;

b. a hollow cannula connected to said second end of said housing and extending into said internal chamber for piercing engagement with said pierceable septum of said container subassembly;

c. a cap connected to said housing proximate said second end, said cap having an adapter connector mateably interconnectable with said dispenser connector, said adapter connector comprising a plurality of spaced apart tabs engagable with said locking ears; and

(iii) an adapter sleeve telescopically receivable within said annular passageway, said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.

21. An apparatus as defined in claim 20 in which said flow control means further comprises a pierceable septum carried by said dispensing head for controlling fluid flow into said reservoir.

22. An apparatus as defined in claim 20 in which said flow control means further comprises valve means carried by said dispensing head for controlling fluid flow into said reservoir.

23. An apparatus as defined in claim 22 in which said dispensing head assembly includes a central bore defining a valve seat and in which said valve means comprises a valve member movable within said bore toward and away from said valve seat.

24. An apparatus as defined in claim 23 in which said dispensing head assembly includes a luer connector and an outlet conduit in communication with said fluid outlet of said reservoir.

25. An apparatus as defined in claim 23 in which said reservoir fill assembly includes valve operating means for moving said valve member away from said valve seat.

26. A dispensing apparatus for dispensing fluid comprising:

(a) a fluid dispenser comprising;

(i) a housing assembly including a housing having a fluid reservoir, said reservoir having a fluid inlet for filling said reservoir with fluid and a fluid outlet for permitting fluid flow from said fluid reservoir, said housing assembly having a dispenser connector; and

(ii) stored energy means for acting upon the fluid contained within said reservoir to cause the fluid to controllably flow through said outlet, said stored energy means comprising a compressively deformable, elastomeric member carried within said reservoir, said elastomeric member being expandable to cause fluid flow from said reservoir toward said fluid outlet; and

(iii) flow control means disposed between said reservoir and said fluid outlet for controlling fluid flow from said reservoir;

(iv) 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, said hollow housing further including an adapter connector mateably interconnectable with said dispenser connector for removably interconnecting said adapter subassembly with said fluid dispenser; and

(v) an adapter sleeve telescopically receivable with said annular passageway said sleeve subassembly including pusher means for engagement with said plunger to move said plunger within said container between said first and second locations.

27. An apparatus as defined in claim 26 in which said flow control means comprises filter means for filtering particulate matter from fluid flowing from said reservoir.

28. An apparatus as defined in claim 26 in which said flow control means comprises fluid flow rate control means for controlling the rate of fluid flow from said reservoir toward said fluid outlet.

29. An apparatus as defined in claim 28 in which said fluid flow rate control means comprises a wafer having at least one microbore formed therethrough.

30. An apparatus as defined in claim 29 in which said wafer comprises a plastic film.

31. An apparatus as defined in claim 29 in which said wafer comprises polyester.

32. An apparatus as defined in claim 29 in which said microbore has a diameter between about one micron and about 50 microns.

33. An apparatus as defined in claim 29 in which said microbore has at least one sharp edge.