INFUSION PUMP ASSEMBLY

• US 20170007779A1
• Filed: 09/19/2016
• Published: 01/12/2017
• Est. Priority Date: 05/18/2001
• Status: Active Grant

• Current Assignee: Deka Products Limited Partnership
• Original Assignee: Deka Products Limited Partnership
• Inventors: Grant, Kevin L., Tracey, Brian L., Mandro, Marc Aurele, Bryant, Robert John Jr.
• Granted Patent: US 10,500,352 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 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 2005/14573 with a replaceable reservoir for quick connection/disconnection with a driving system
• 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 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/583 by visual feedback
• CPC Class Codes: A61M 2205/8206 battery-operated
• CPC Class Codes: A61M 2230/201 Glucose concentration
• CPC Class Codes: A61M 25/0612 Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: A61M 39/14 for connecting tubes having sealed ends needle sets A61M5/162; having valves closing automatically on disconnection of line A61M39/26
• CPC Class Codes: A61M 5/14 Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• 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 5/1456 : 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 5/14586 : pressurised by means of a flexible diaphragm
• 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 5/5086 : for indicating if defective, used, tampered with or unsterile
• CPC Class Codes: Y10T 29/494 : Fluidic or fluid actuated device making
• CPC Class Codes: Y10T 29/49826 : Assembling or joining

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. An infusion pump device for delivering infusible fluid to a user, the device comprising:

a reusable pump portion comprising a motor assembly;

a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising a plunger rod, the plunger rod connected to the plunger and extending away from the plunger to a distal end, the plunger rod having a threaded portion; and

processing logic for executing one or more processes in the reusable pump portion,

wherein when the disposable portion is attached to the reusable pump portion the plunger rod is engaged with the motor assembly, and

wherein the plunger rod is displaceable by the motor assembly, and

wherein the processing logic configured to monitor a displacement of the plunger rod to determine if the plunger rod was displaced an expected displacement in response to displacement by the motor assembly; and

wherein if the plunger rod was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.

2. The device in claim 1 further comprising a battery assembly configured to power the infusion pump device, wherein the processing logic configured to:

compare an actual voltage level of the battery assembly to a minimum voltage requirement to determine if the actual voltage level meets the minimum voltage requirement; and

if the actual voltage level does not meet the minimum voltage requirement, initiating an alarm sequence on the infusion pump device.

3. The device in claim 1 wherein the motor assembly comprises a nut assembly.

4. The device of claim 1 wherein the reusable pump portion is configured to receive the disposable portion.

5. The device of claim 1 wherein the plunger assembly comprises at least one seal.

6. The device of claim 1 wherein the disposable portion further comprises a needle.

7. The device of claim 1 wherein the disposable portion further comprises a rubber septum.

8. The device of claim 7 wherein the disposable portion further comprises a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the septum.

9. An infusion pump device for delivering infusible fluid to a user, the device comprising:

a reusable pump portion comprising a motor assembly; and

a disposable portion in removable relation to the reusable pump portion, the disposable portion comprising;

a plunger rod, the plunger rod connected to the plunger and extending away from the plunger to a distal end, the plunger rod having a threaded portion extending over an entire length of the plunger rod from the plunger to the distal end,

wherein the plunger rod is displaceable by the motor assembly.

10. The device of claim 9 wherein the disposable portion further comprises a needle.

11. The device of claim 9 wherein the disposable portion further comprises a rubber septum.

12. The device of claim 11 wherein the disposable portion further comprises a needle, wherein when the disposable portion is attached to the reusable pump portion, the needle pierces the septum.

13. The device of claim 9 wherein the plunger assembly further comprises at least one seal.

14. The device of claim 9 further comprising processing logic for executing one or more processes in the reusable pump portion.

15. The device of claim 14 wherein the processing logic configured to monitor a displacement of the plunger rod to determine if the plunger rod was displaced an expected displacement in response to displacement by the motor assembly.

16. The device of claim 15 wherein and if the plunger rod was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.

17. An infusion pump device for delivering infusible fluid to a user, the device comprising:

a pump portion comprising a motor assembly wherein the motor assembly comprising a nut assembly; and

a reservoir in removable relation to the pump portion, the reservoir comprising;

a plunger rod, the plunger rod connected to the plunger and extending away from the plunger to a distal end, the plunger rod having a threaded portion extending over an entire length of the plunger rod from the plunger to the distal end,

wherein the plunger rod is displaceable by the nut assembly, and

wherein the pump portion is durable and the reservoir is disposable.

18. The device of claim 17 wherein the plunger assembly comprises at least one seal.

19. The device of claim 17 wherein the reservoir further comprises a rubber septum.

20. The device of claim 17 further comprising processing logic for executing one or more processes in the reusable pump portion, wherein the processing logic configured to:

monitor a displacement of the plunger rod to determine if the plunger rod was displaced an expected displacement in response to displacement by the motor assembly; and

if the plunger rod was not displaced the expected displacement, initiating an alarm sequence on the infusion pump device.