Infusion pump assembly

• US 8,845,587 B2
• Filed: 03/27/2009
• Issued: 09/30/2014
• Est. Priority Date: 05/18/2001
• Status: Expired due to Fees

• Current Assignee: Eugly Diabetes Care LLC
• Original Assignee: Deka Products Limited Partnership
• Inventors: Lanigan, Richard J., Mandro, Marc A.
• Primary Examiner(s): Lucchesi, Nicholas
• Assistant Examiner(s): LANDRY II, GERALD ERNEST
• Application Number:
  US12/413,234
• Publication Number:
  US 20120209194A1
• Time in Patent Office: 2,013 Days
• Field of Search: 604 65- 67, 604131-147, 604151-155
• US Class Current: 604/155
• 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 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. A delivery device for delivering an infusion medium to a user, the device comprising:

first and second housing portions adapted to be carried by a user and configured to be selectively engaged together for operation and selectively separated from each other;

a reservoir supported by the first housing portion, the reservoir including a reservoir housing having an interior volume, a plunger head moveable within the reservoir interior to selectively change the volume of the reservoir interior and a plunger rod extending from the plunger head to a position outside of the reservoir housing, wherein the plunger rod comprises a threaded portion for at least a portion of the rod'"'"'s length;

a nut member being supported in a fixed relation with the plunger rod of the reservoir, the nut member having a structure for engaging the threaded portion of the plunger rod in any one of a plurality of positions in a first dimension relative to the nut member, and wherein the nut member includes a detectable feature;

a rotatable lead shaft supported by the second housing portion for rotation about a rotary axis; and

a sensor arranged to detect the detectable feature to provide a signal corresponding to the position of the detectable feature, wherein the position of the detectable feature corresponds to a fill state of the reservoir.

2. A delivery device for delivering an infusion medium to a user, the device comprising:

first and second housing portions adapted to be carried by a user and configured to be selectively engaged together for operation and selectively separated from each other;

a reservoir supported by the first housing portion, the reservoir including;

a reservoir having an interior volume;

a plunger moveable within the reservoir interior to selectively change the volume of the reservoir interior; and

a plunger rod extending from the plunger, the plunger rod including a threaded portion having an open side, wherein the plunger rod includes a detectable feature;

a drive screw supported by the second housing portion for rotation about a rotary axis, the drive screw being engageable with the threaded portion of the plunger rod as the first and second housing portions are brought together for operative engagement; and

a sensor arranged to detect the detectable feature to provide a signal corresponding to the position of the detectable feature, wherein the position of the detectable feature corresponds to a fill state of the reservoir.