ONE PIECE SEALING RESERVOIR FOR AN INSULIN INFUSION PUMP

• US 20110190704A1
• Filed: 03/22/2011
• Published: 08/04/2011
• Est. Priority Date: 09/21/2005
• Status: Active Grant

• Current Assignee: Fifty 50 Medical, LLC
• Original Assignee: Fifty 50 Medical, LLC
• Inventors: Lynch, George R., Brandenburg, Allen E.
• Granted Patent: US 9,144,645 B2
• Time in Patent Office: Days
• US Class Current: 604/152
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• CPC Class Codes: A61M 2205/19 Constructional features of carpules, syringes or blisters
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/145 using pressurised reservoirs, e.g. pressurised by means of pistons
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump

Abstract

A novel one-piece fluid reservoir assembly for use in conjunction with an insulin infusion pump. The single piece fluid reservoir assembly includes a barrel body, a male luer fitting integral with the barrel body, a sealing surface integral with the barrel body, the sealing surface for sealing against the pump housing when the fluid reservoir assembly is inserted into the pump housing. Further, the barrel includes, as part of the one-piece fluid reservoir assembly, threads for engagement with threads on an opening in the fluid pump so that the fluid assembly can be inserted into the fluid pump, engage the threads and rotation therewith will locate the fluid reservoir assembly within the pump. Thereafter, a piston in the pump may be incrementally advanced to act upon a plunger in the barrel assembly to force a fluid within the barrel assembly through the male luer fitting and through a conduit engaged therewith to a remote infusion set.

Claims

1. An assembly for the delivery of insulin to a diabetic patient, the assembly comprising:

a pump, the pump having a reservoir chamber, a drive piston, and a reservoir chamber opening, the reservoir chamber opening with O-ring sealing member thereon; and

a unitary, one piece fluid reservoir comprising a cylindrical barrel portion having a barrel diameter and having a first end and a second end having shoulders thereon;

a male luer fitting integral with the shoulders of the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the shoulders of the cylindrical barrel portion supporting and rigidly integral with a cylindrical neck portion, the neck portion including integral outward projecting threads dimensioned to engage the threads of the reservoir housing chamber opening, the fluid reservoir further including a cylindrical sealing surface dimensioned to lay adjacent the reservoir chamber opening of the pump in fluid sealing relation to the O-ring sealing member of the pump, the cylindrical sealing surface joined rigidly non-moveably and integral to the neck portion by a base, the fluid reservoir further including an open ended cylindrical extension, extending outward from and rigidly and non-moveably joining the cylindrical sealing surface, the cylindrical extension having an outer surface, an inner volume, and an upper perimeter;

a plunger dimensioned for slideable receipt into the first end of the cylindrical barrel section;

a conduit including a first end adapted to engage the male luer fitting of the fluid reservoir, the conduit having a second end; and

an infusion set, for engagement with the second end of the conduit, the infusion set for feeding fluid from the reservoir, through the engaged luer fittings and the conduit into the infusion set and into the person to which the infusion set is engaged.

2. The assembly of claim 1, wherein the upper perimeter of the cylindrical extension of the unitary, one-piece fluid reservoir extends beyond the removed end of the male luer fitting.

3. The assembly of claim 1, wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon.

4. The assembly of claim 1, wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

5. The assembly of claim 1, wherein the upper perimeter of the cylindrical extension of the unitary, one-piece fluid reservoir extends beyond the removed end of the male luer fitting;

wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon; and

wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

6. The assembly of claim 1, wherein the cylindrical sealing surface of the unitary barrel includes detents on the walls thereof.

7. The assembly of claim 6, wherein the upper perimeter of the cylindrical extension of the unitary, one-piece fluid reservoir extends beyond the removed end of the male luer fitting;

wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon; and

wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

8. The assembly of claim 1, wherein the upper perimeter of the cylindrical extension is corrugated.

9. A one-piece, unitary, undivided fluid reservoir comprising:

a cylindrical barrel portion having a barrel diameter and having a first end and a second end having shoulders thereon;

a male luer fitting integral with the shoulders of the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the shoulders of the cylindrical barrel portion supporting and rigidly integral with a cylindrical neck portion, the neck portion including integral outward projecting threads dimensioned to engage the threads of the reservoir housing chamber opening, the fluid reservoir further including a cylindrical sealing surface dimensioned to lay adjacent the reservoir chamber opening of the pump in fluid sealing relation to the O-ring sealing member of the pump, the cylindrical sealing surface joined rigidly non-moveably and integral to the neck portion by a base, the fluid reservoir further including an open ended cylindrical extension, extending outward from and rigidly and non-moveably joining the cylindrical sealing surface, the cylindrical extension having an outer surface, an inner volume, and an upper perimeter;

10. The fluid reservoir of claim 9, wherein the upper perimeter of the cylindrical extension extends beyond the removed end of the male luer fitting.

11. The fluid reservoir of claim 9, wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon.

12. The fluid reservoir of claim 9, wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

13. The fluid reservoir of claim 9, wherein the upper perimeter of the cylindrical extension extends beyond the removed end of the male luer fitting;

wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon; and

wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

14. The fluid reservoir of claim 9, wherein the cylindrical sealing surface of the unitary barrel includes detents on the walls thereof.

15. The fluid reservoir of claim 14, wherein the upper perimeter of the cylindrical extension extends beyond the removed end of the male luer fitting;

wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon; and

wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter.

16. A kit for providing insulin to a patient through an infusion set engaged with the patient, the kit comprising:

a pump, the pump having a reservoir chamber, a drive piston, and a reservoir chamber opening, the reservoir chamber opening with O-ring sealing member thereon; and

a unitary, one piece fluid reservoir comprising a cylindrical barrel portion having a barrel diameter and having a first end and a second end having shoulders thereon;

a male luer fitting integral with the shoulders of the second end of the barrel portion, the male luer fitting having an opening at a removed end thereof, the shoulders of the cylindrical barrel portion supporting and rigidly integral with a cylindrical neck portion, the neck portion including integral outward projecting threads dimensioned to engage the threads of the reservoir housing chamber opening, the fluid reservoir further including a cylindrical sealing surface dimensioned to lay adjacent the reservoir chamber opening of the pump in fluid sealing relation to the O-ring sealing member of the pump, the cylindrical sealing surface joined rigidly non-moveably and integral to the neck portion by a base, the fluid reservoir further including an open ended cylindrical extension, extending outward from and rigidly and non-moveably joining the cylindrical sealing surface, the cylindrical extension having an outer surface, an inner volume, and an upper perimeter;

wherein the upper perimeter of the cylindrical extension of the unitary, one-piece fluid reservoir extends beyond the removed end of the male luer fitting;

wherein the outer surface of the cylindrical extension includes a multiplicity of ribs thereon;

wherein the cylindrical sealing surface and the cylindrical extension have about the same diameter;

wherein the cylindrical sealing surface of the unitary barrel includes detents on the walls thereof; and

wherein the upper perimeter of the cylindrical extension is corrugated;

a plunger dimensioned for slideable receipt into the first end of the unitary barrel;

a conduit including a first end adapted to engage the male luer fitting of the fluid reservoir, the conduit having a second end; and

an infusion set, for engagement with the second end of the conduit, the infusion set including a cannula capable of subcutaneous placement for feeding fluid from the reservoir, through the engaged luer fittings and the conduit into the infusion set and into the person to which the infusion set is engaged.