Infusion pump assembly

• US 8,262,616 B2
• Filed: 10/10/2008
• Issued: 09/11/2012
• Est. Priority Date: 10/10/2008
• Status: Active Grant

• Current Assignee: Eugly Diabetes Care LLC
• Original Assignee: Deka Products Limited Partnership
• Inventors: Grant, Kevin L., Tracey, Brian D.
• Primary Examiner(s): Lucchesi, Nicholas D
• Assistant Examiner(s): Landry, II, Gerald
• Application Number:
  US12/249,882
• Publication Number:
  US 20100094222A1
• Time in Patent Office: 1,432 Days
• Field of Search: 604 65- 67, 604/131, 604/151, 6048901-8921
• US Class Current: 604/151
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• CPC Class Codes: A61M 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 2205/16 with back-up system in case of failure
• CPC Class Codes: A61M 2205/18 with alarm
• CPC Class Codes: A61M 2205/3306 Optical measuring means
• CPC Class Codes: A61M 2205/332 Force measuring means
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2230/201 Glucose concentration
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/1456 with a replaceable reservoir comprising a piston rod to be moved into the reservoir, e.g. the piston rod is part of the removable reservoir
• CPC Class Codes: A61M 5/1723 using feedback of body parameters, e.g. blood-sugar, pressure measurement of body parameters A61B5/00
• CPC Class Codes: A61M 5/3129 Syringe barrels A61M5/3205 and A61M5/50 take precedence
• CPC Class Codes: A61M 5/31515 Connection of piston with piston rod

Abstract

An infusion pump assembly is disclosed. The infusion pump assembly includes a locking tab and a pump barrel inside a pump barrel housing, where the pump barrel accommodates a reservoir assembly. The reservoir assembly includes a reservoir and a plunger rod. The infusion pump assembly also includes a locking disc at a terminus of the pump barrel. The locking disc includes a clearance hole for the plunger rod. The locking disc also includes at least one locking tab notch in close proximity with the locking tab. The locking tab is in moveable engagement with the locking tab notch, and the reservoir moves the locking tab from a locked position to an unlocked position when the plunger rod is inserted through clearance hole. The locking disc rotates upon torque being applied to the reservoir assembly, the locking disc rotating from a non-loaded position to a loaded position with respect to the plunger rod and a drive screw.

Claims

1. An infusion pump assembly comprising:

a locking tab;

a pump barrel inside a pump barrel housing, said pump barrel accommodates a reservoir assembly comprising a reservoir and a plunger rod; and

a locking disc at a terminus of said pump barrel, said locking disc having a clearance hole for said plunger rod and at least one locking tab notch, said locking disc being in close proximity with said locking tab,

wherein said locking tab is in moveable engagement with said locking tab notch, and

wherein said reservoir moves said locking tab from a locked position to an unlocked position when said plunger rod is inserted through said clearance hole, and

wherein said locking disc rotates upon torque being applied to said reservoir assembly, said locking disc rotating from a non-loaded position to a loaded position with respect to said plunger rod and a drive screw.

2. The infusion pump of claim 1 wherein said locking disc further comprises a second locking tab notch, wherein said second locking tab notch is engaged with said locking tab when said locking disc is in said loaded position.

3. The infusion pump of claim 1 wherein said locking disc further comprises a plunger rod support, said plunger rod support in close relation with said plunger rod when said plunger rod is inserted through said clearance hole.

4. The infusion pump of claim 1 wherein said locking disc further comprises at least two reservoir tab openings for mating with at least two reservoir alignment tabs on said reservoir.

5. The infusion pump of claim 4 wherein said reservoir assembly further comprises a locking hub, said locking hub fluidly connected to said reservoir.

6. The infusion pump of claim 5 wherein said locking hub further comprises at least two locking hub alignment tabs, said locking hub alignment tabs aligning with said reservoir alignment tabs when said locking hub is fluidly connected to said reservoir.

7. The infusion pump of claim 6 further comprising a hub and battery end cap, said end cap having an opening to said pump barrel, said pump barrel opening being complementary to said locking hub alignment tabs wherein the loading of said reservoir assembly provides alignment of said reservoir alignment tabs with said reservoir tab openings and said plunger rod with said clearance hole.

8. The infusion pump of claim 7, said hub and battery end cap further comprising a first alignment feature, said first alignment feature complementary to a second alignment feature on said reservoir, wherein when said first and second alignment features are aligned, said locking hub alignment tabs are aligned with said hub and battery cap opening.

9. A reservoir assembly comprising:

a reservoir, said reservoir having an interior volume and terminating with a male feature on a first end;

a plunger rod, said plunger rod comprising a threaded portion and a notched portion;

a reservoir bottom, said reservoir bottom having a plunger rod opening, and at least two reservoir alignment tabs, wherein said plunger rod extends through said plunger rod opening; and

a removable filling aid, said filling aid comprising a threaded portion and a handle portion, wherein said threaded portion threads to said threaded portion of said plunger rod.

10. The reservoir assembly of claim 9 further comprising an alignment feature on said reservoir, said alignment feature for aligning the reservoir assembly with an infusion pump assembly for loading said reservoir assembly into said infusion pump assembly.

11. A method of loading a reservoir assembly to a drive mechanism of an infusion pump assembly, the method comprising:

aligning locking tab alignment features of a reservoir and locking tab assembly with an alignment feature on a hub and battery end cap of said infusion pump assembly;

applying pressure to said locking tab of said reservoir and locking tab assembly;

a

rotating said locking tab until said locking tab is flush with said infusion pump assembly,

wherein said rotating said locking tab loads said reservoir and locking hub assembly onto the drive mechanism of said infusion pump assembly.

12. An infusion pump assembly comprising:

a locking tab;

a pump barrel inside a pump barrel housing, said pump barrel accommodates a reservoir assembly comprising a reservoir, a plunger rod, and a locking hub, said locking hub fluidly connected to said reservoir; and

a locking disc at a terminus of said pump barrel, said locking disc having a clearance hole for said plunger rod and at least one locking tab notch, said locking disc being in close proximity with said locking tab, said locking disc further comprising at least two reservoir tab openings for mating with at least two reservoir alignment tabs on said reservoir,

wherein said locking tab is in moveable engagement with said locking tab notch, and

wherein said reservoir moves said locking tab from a locked position to an unlocked position when said plunger rod is inserted through said clearance hole, and

wherein said locking disc rotates upon torque being applied to said reservoir assembly, said locking disc rotating from a non-loaded position to a loaded position with respect to said plunger rod and a drive screw.

13. The infusion pump of claim 12 wherein said locking disc further comprises a second locking tab notch, wherein said second locking tab notch is engaged with said locking tab when said locking disc is in said loaded position.

14. The infusion pump of claim 12 wherein said locking disc further comprises a plunger rod support, said plunger rod support in close relation with said plunger rod when said plunger rod is inserted through said clearance hole.

15. An infusion pump assembly comprising:

a locking tab;

a pump barrel inside a pump barrel housing, said pump barrel accommodates a reservoir assembly comprising a reservoir, a plunger rod, and a locking hub, said locking hub fluidly connected to said reservoir; and

a locking disc at a terminus of said pump barrel, said locking disc having a clearance hole for said plunger rod and at least one locking tab notch, said locking disc being in close proximity with said locking tab, said locking disc further comprising at least two reservoir tab openings for mating with at least two reservoir alignment tabs on said reservoir,

wherein said locking tab is in moveable engagement with said locking tab notch, and

wherein said reservoir moves said locking tab from a locked position to an unlocked position when said plunger rod is inserted through said clearance hole, and

wherein said locking disc rotates upon torque being applied to said reservoir assembly, said locking disc rotating from a non-loaded position to a loaded position with respect to said plunger rod and a drive screw, and

wherein said locking hub further comprising at least two locking hub alignment tabs, said locking hub alignment tabs aligning with said reservoir alignment tabs when said locking hub is fluidly connected to said reservoir.

16. The infusion pump of claim 15 wherein said locking disc further comprises a second locking tab notch, wherein said second locking tab notch is engaged with said locking tab when said locking disc is in said loaded position.

17. The infusion pump of claim 15 wherein said locking disc further comprises a plunger rod support, said plunger rod support in close relation with said plunger rod when said plunger rod is inserted through said clearance hole.

18. An infusion pump assembly comprising:

a locking tab;

a pump barrel inside a pump barrel housing, said pump barrel accommodates a reservoir assembly comprising a reservoir, a plunger rod, and a locking hub, said locking hub fluidly connected to said reservoir; and

a locking disc at a terminus of said pump barrel, said locking disc having a clearance hole for said plunger rod and at least one locking tab notch, said locking disc being in close proximity with said locking tab, said locking disc further comprising at least two reservoir tab openings for mating with at least two reservoir alignment tabs on said reservoir,

wherein said locking tab is in moveable engagement with said locking tab notch, and

wherein said reservoir moves said locking tab from a locked position to an unlocked position when said plunger rod is inserted through said clearance hole, and

wherein said locking disc rotates upon torque being applied to said reservoir assembly, said locking disc rotating from a non-loaded position to a loaded position with respect to said plunger rod and a drive screw, and

wherein said locking hub further comprising at least two locking hub alignment tabs, said locking hub alignment tabs aligning with said reservoir alignment tabs when said locking hub is fluidly connected to said reservoir, and

a hub and battery end cap, said end cap having an opening to said pump barrel, said pump barrel opening being complementary to said locking hub alignment tabs wherein the loading of said reservoir assembly provides alignment of said reservoir alignment tabs with said reservoir tab openings and said plunger rod with said clearance hole.

19. The infusion pump of claim 18 wherein said locking disc further comprises a second locking tab notch, wherein said second locking tab notch is engaged with said locking tab when said locking disc is in said loaded position.

20. The infusion pump of claim 18 wherein said locking disc further comprises a plunger rod support, said plunger rod support in close relation with said plunger rod when said plunger rod is inserted through said clearance hole.

21. The infusion pump of claim 18, said hub and battery end cap further comprises a first alignment feature, said first alignment feature complementary to a second alignment feature on said reservoir, wherein when said first and second alignment features are aligned, said locking hub alignment tabs are aligned with said hub and battery cap opening.