Fluid dispenser

• US 8,057,435 B2
• Filed: 07/31/2007
• Issued: 11/15/2011
• Est. Priority Date: 07/31/2006
• Status: Active Grant

• Current Assignee: BioQ Pharma Incorporated
• Original Assignee: Joshua W. Kriesel, Marshall S. Kriesel, Thomas N. Thompson
• Inventors: Kriesel, Joshua W., Thompson, Thomas N., Kriesel, Marshall S.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Zhang; Jenna
• Application Number:
  US11/888,735
• Publication Number:
  US 20080027386A1
• Time in Patent Office: 1,568 Days
• Field of Search: 604/131, 604132-139, 604/151, 604/153, 604/156, 604/157, 604/212, 604/216, 604/207, 604/246, 604/256
• US Class Current: 604/132
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 5/141 with capillaries for restricting fluid flow
• CPC Class Codes: A61M 5/148 flexible, e.g. independent bagsA61M5/155 takes precedence
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/16881 Regulating valves on-off valves, e.g. clamps A61M39/28

Abstract

A compact fluid dispenser for use in controllably dispensing fluid medicaments, such as analgesics and like medicinal agents from the device reservoir which is provided in the form of a novel bellows-type assembly. The fluid dispenser includes a unique stored energy mechanism that provides the force necessary to continuously and substantially uniformly expel fluid from the device reservoir. The device also includes a novel adjustable flow rate control assembly that is disposed intermediate the fluid reservoir outlet and the outlet port of the device for precisely controlling the rate of fluid flow from the outlet port toward the patient.

Claims

1. A dispensing device for dispensing medicaments to a patient comprising:

(a) a supporting structure comprising a base assembly and a generally cylindrically shaped outer housing interconnected with said base assembly;

(b) a carriage assembly interconnected with said supporting structure for movement between a first position and a second position, said carriage assembly comprising a carriage having a carriage base provided with a plurality of circumferentially spaced openings and a generally cylindrically shaped sidewall terminating in a radially outwardly extending flange;

(c) locking means carried by said supporting structure for locking said carriage assembly in said first position;

(d) a collapsible reservoir carried by said carriage assembly for containing fluid to be dispensed to the patient, said collapsible reservoir having an outlet port and comprising a blow-molded, collapsible container having a collapsible side wall, a bottom wall connected to said collapsible side wall, said bottom wall having an upstanding ullage portion, a top wall connected to said collapsible side wall and a reservoir septum assembly sealably connected to said top wall, said reservoir septum assembly including a pierceable septum;

(e) a stored energy means operably associated with said carriage assembly for moving said carriage assembly between said first and second positions, said stored energy means comprising a coil spring having a first end in engagement with said supporting structure and a second end in engagement with said radially outwardly extending flange of said carriage;

(f) an administration set, including an administration line interconnected with said outlet port of said collapsible reservoir; and

(g) fluid flow control means carried by said base assembly of said supporting structure for controlling fluid flow from said collapsible reservoir toward said administration set, said fluid flow control means being movable from a first position to a second position and comprising;

(i) rate control means carried by said supporting structure for controlling the rate of fluid flow from said collapsible reservoir toward said administration set, said rate control means comprising a rate control plate having a fluid flow micro-channel interconnected with said outlet of said collapsible reservoir; and

(ii) reservoir accessing means for controlling fluid flow between said collapsible reservoir and said rate control means, said reservoir accessing means comprising a septum penetrating member for penetrating said pierceable septum of said reservoir septum assembly of said blow-molded, collapsible container.

2. The dispensing device as defined in claim 1, further including disabling means carried by said supporting structure for blocking fluid flow toward said administration set.

3. The dispensing device as defined in claim 1 in which said collapsible reservoir comprises a bellows structure.

4. The dispensing device as defined in claim 1 in which said collapsible reservoir is semi-rigid.

5. The dispensing device as defined in claim 1 in which said collapsible reservoir is constructed from a plastic material.

6. The dispensing device as defined in claim 1 in which said collapsible reservoir is pre-filled with the fluid to be dispensed to the patient.

7. The dispensing device as defined in claim 1 in which said collapsible reservoir is pre-filled with an injectable medicament.

8. The dispensing device as defined in claim 1 in which said collapsible reservoir is pre-filled with a parental fluid.

9. A dispensing device for dispensing medicaments to a patient comprising:

(a) a supporting structure;

(b) a reservoir defining assembly that defines a collapsible reservoir carried by said supporting structure, said collapsible reservoir being constructed from a single extrudable plastic parison as a prefilled container containing fluid and having an outlet port, said reservoir defining assembly comprising;

(i) a neck portion having a closure wall,

(ii) a side wall connected to said neck portion,

(iii) a bottom wall connected to said side wall, said bottom wall including an upstanding ullage portion;

(iv) a septum membrane superimposed over said closure wall; and

(v) a cap connected to said neck portion for holding said septum membrane in position;

(c) a coil spring operably associated with said collapsible reservoir for collapsing said reservoir;

(d) an administration set, including an administration line interconnected with said outlet port of said collapsible reservoir;

(e) fluid flow control means carried by said supporting structure for controlling fluid flow from said collapsible reservoir toward said administration set, said fluid flow control means being movable from a first position to a second position and comprising;

(i) rate control means for controlling the rate of fluid flow from said collapsible reservoir toward said administration set, said rate control means comprising a rate control plate having a circuitous fluid flow micro-channel formed therein; and

(ii) reservoir accessing means for controlling fluid flow between said collapsible reservoir and said rate control means.

10. The dispensing device as defined in claim 9 in which said reservoir accessing means comprises a penetrating member for penetrating said closure wall of said neck portion of said reservoir defining assembly and for penetrating said septum membrane of said reservoir defining assembly.

11. A dispensing device for dispensing medicaments to a patient comprising:

(a) a supporting structure comprising a base assembly and a housing interconnected with said base assembly;

(b) a carriage assembly interconnected with said supporting structure for movement between a first position and a second position;

(c) a reservoir defining assembly that defines a semi-rigid collapsible reservoir carried by said carriage assembly, said semi-rigid collapsible reservoir being constructed from a single extrudable plastic parison as a prefilled container containing fluid to be dispensed to the patient, said collapsible reservoir having an outlet port and comprising a neck portion having a closure wall, a side wall connected to said neck portion and a bottom wall connected to said side wall, said bottom wall including an upstanding ullage portion and a slit septum closing said outlet port of said collapsible reservoir;

(d) guide means connected to said supporting structure for guiding travel of said carriage assembly between said first position and said second position, said guide means comprising a guide member connected to said base assembly and a guide rib connected to said housing of said supporting structure;

(e) a stored energy means operably associated with said carriage assembly for moving said carriage assembly between said first and second positions, said stored energy means comprising a spring;

(f) an administration set, including an administration line interconnected with said outlet port of said collapsible reservoir;

(g) fluid flow control means carried by said base assembly of said supporting structure for controlling fluid flow from said collapsible reservoir toward said administration set, said fluid flow control means being movable from a first position to a second position and comprising a reservoir accessing a means, including a blunt-ended penetrating member.