Infusion pump assembly

• US 9,486,572 B2
• Filed: 09/15/2014
• Issued: 11/08/2016
• Est. Priority Date: 10/10/2008
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Grant, Kevin L., Tracey, Brian D.
• Primary Examiner(s): LANDRY II, GERALD ERNEST
• Application Number:
  US14/486,457
• Publication Number:
  US 20150005711A1
• Time in Patent Office: 785 Days
• Field of Search: 604/152, 604/155, 604/207, 604/218
• US Class Current: 1/1
• 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 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. A reservoir assembly comprising:

a reservoir, said reservoir having an interior volume and terminating with a hub connector on a first end;

a plunger;

a plunger rod having a first end connected to said plunger, said plunger rod comprising a threaded portion and a notched portion; and

a removable filling aid, said filling aid comprising a threaded portion, a support portion and a handle portion, wherein said threaded portion threads to said threaded portion of said plunger rod at a non-zero distance from the first end of said plunger rod and said support portion aligns with said notched portion of said plunger rod.

2. The assembly of claim 1 wherein the hub connector is a septum.

3. The assembly of claim 1 wherein the hub connector is a luer connector.

4. The assembly of claim 1 further comprising a hub adapted to attach to said hub connector.

5. The assembly of claim 4 wherein the hub and hub connector are moldably attached.

6. The assembly of claim 1 further comprising a plunger connected to the plunger rod.

7. The assembly of claim 6 wherein the plunger further comprises at least one seal.

8. The assembly of claim 1 wherein the reservoir is substantially curved.

9. The assembly of claim 8 wherein the plunger rod is substantially curved.

10. A reservoir assembly comprising:

a substantially round housing;

a curved channel formed in a portion of the housing, the curved channel having a cylindrical shape;

a plunger located within the channel;

a plunger rod having a first end connected to said plunger; and

a removable filling aid, said filling aid comprising a threaded portion, a support portion and a handle portion, wherein said threaded portion and said support portion are configured to engage the plunger, with the threaded portion engaging a threaded portion of said plunger rod at a non-zero distance from the first end of said plunger rod.

11. The assembly of claim 10 wherein the plunger comprises a first end, a second end and a middle portion, wherein the first end is round, the second end is round and the middle portion is flat, wherein the plunger is moveable within the curved channel.