Infusion Pump Assembly

• US 20170056577A1
• Filed: 11/14/2016
• Published: 03/02/2017
• Est. Priority Date: 05/18/2001
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Lanigan, Richard J., Grant, Kevin L., Tracey, Brian D.
• Granted Patent: US 11,173,242 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• 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 2005/16863 Occlusion detection
• CPC Class Codes: A61M 2205/103 rotating
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 5/1413 Modular systems comprising interconnecting elements
• 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: Y10T 29/49826 Assembling or joining

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 hub and battery end cap, the end cap comprising;

an opening to a pump barrel, the pump barrel opening being complementary to a locking hub alignment tab; and

a first alignment feature, the first alignment feature complementary to a second alignment feature on a reservoir,

wherein when the first and second alignment features are aligned, the locking hub alignment tabs are aligned with the hub and battery cap opening.

2. The infusion pump assembly of claim 1, the reservoir further comprising:

wherein the reservoir having an interior volume and terminating with a male feature on a first end;

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

a reservoir bottom, the reservoir bottom having a plunger rod opening, and the second alignment feature, wherein the plunger rod extends through the plunger rod opening; and

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

3. The infusion pump assembly of claim 2, further comprising:

a locking tab;

a pump barrel inside a pump barrel housing;

a locking disc at a terminus of the pump barrel in close proximity with the locking tab, the locking disc comprising;

a clearance hole for the plunger rod;

at least one locking tab notch; and

at least two reservoir tab openings for mating with the at least two reservoir alignment tabs on the reservoir.

4. The infusion assembly of claim 2, wherein the plunger rod further comprising a plunger.

5. The infusion assembly of claim 4, wherein the plunger further comprising a plunger seal.

6. The infusion assembly of claim 5, wherein the plunger seal is a double o-ring seal, molded as a single part.

7. The infusion assembly of claim 5, wherein the plunger seal fits over a plunger.

8. The infusion assembly of claim 6, wherein a top portion of the double o-ring seal is thicker than a bottom portion of the double o-ring seal.

9. The infusion assembly of claim 6, wherein a bottom portion of the double o-ring seal is thicker than a top portion of the double o-ring seal.

10. The infusion assembly of claim 5, further comprising a plunger cap, wherein the plunger cap attached to the plunger seal.

11. The infusion assembly of claim 2, wherein the removable filling aid connected to the plunger rod by way of a plastic piece, wherein the removable filling aid may be removed from the plunger rod by bending the plastic piece.

12. An infusion pump assembly comprising:

a hub and battery end cap, the end cap comprising;

an opening to a pump barrel, the pump barrel opening being complementary to a locking hub alignment tab; and

a first alignment feature, the first alignment feature complementary to a second alignment feature on a reservoir,

wherein when the first and second alignment features are aligned, the locking hub alignment tabs are aligned with the hub and battery cap opening,

wherein the reservoir having an interior volume and terminating with a male feature on a first end;

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

a reservoir bottom, the reservoir bottom having a plunger rod opening, and the second alignment feature, wherein the plunger rod extends through the plunger rod opening; and

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

13. The infusion pump assembly of claim 12, further comprising:

a locking tab;

a pump barrel inside a pump barrel housing;

a locking disc at a terminus of the pump barrel in close proximity with the locking tab, the locking disc comprising;

a clearance hole for the plunger rod;

at least one locking tab notch; and

at least two reservoir tab openings for mating with the at least two reservoir alignment tabs on the reservoir.

14. The infusion assembly of claim 12, wherein the plunger rod further comprising a plunger.

15. The infusion assembly of claim 14, wherein the plunger further comprising a plunger seal.

16. The infusion assembly of claim 15, wherein the plunger seal is a double o-ring seal, molded as a single part.

17. The infusion assembly of claim 15, wherein the plunger seal fits over a plunger.

18. The infusion assembly of claim 16, wherein a top portion of the double o-ring seal is thicker than a bottom portion of the double o-ring seal.

19. The infusion assembly of claim 16, wherein a bottom portion of the double o-ring seal is thicker than a top portion of the double o-ring seal.

20. The infusion assembly of claim 16, further comprising a plunger cap, wherein the plunger cap attached to the plunger seal.

21. The infusion assembly of claim 12, wherein the removable filling aid connected to the plunger rod by way of a plastic piece, wherein the removable filling aid may be removed from the plunger rod by bending the plastic piece.