US 9,308,318 B2 · Infusion pump assembly

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.

Drawings

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Drawings

Claims12

Dependent claims

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

first and second housing portions 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;
a rotatable lead shaft supported by the second housing portion for rotation about a rotary axis;
and
a sensor arranged to detect a 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.

3 more elements

Dependencies are inferred from the claim text.

Description22,278 words

Summary859 words

#This disclosure relates to pump assemblies and, more particularly, to infusion pump assemblies.

#An infusion pump assembly may be used to infuse a fluid (e.g., a medication or nutrient) into a user. The fluid may be infused intravenously (i.e., into a vein), subcutaneously (i.e., into the skin), arterially (i.e., into an artery), and epidurally (i.e., into the epidural space).

#Infusion pump assemblies may administer fluids in ways that would be impractically expensive/unreliable if performed manually by nursing staff. For example, an infusion pump assembly may repeatedly administer small quantities of an infusible fluid (e.g., 0.1 mL per hour), while allowing the user to request one-time larger “bolus” doses.

Brief description of the drawings54 figures

#FIGS. 1A-1B are front and back isometric views of an infusion pump assembly;

#FIGS. 1C-1E are side and front views of the infusion pump assembly of FIG. i;

#FIG. IF is a front isometric view of the infusion pump assembly of FIG. 1;

Detailed description20,477 words

#Like reference symbols in the various drawings indicate like elements.

#Referring to FIGS. 1A-1F, there is shown an infusion pump assembly 100 that may be housed within enclosure assembly 102. Infusion pump assembly 100 may include display system 104 that may be visible through enclosure assembly 102. One or more switch assemblies/input devices 106, 108, 110 may be positioned about various portions of enclosure assembly 102. Enclosure assembly 102 may include infusion port assembly 112 to which cannula assembly 114 may be releasably coupled. Removable cover assembly 116 may allow access to power supply cavity 118 (shown in phantom on FIG. 2).

#Referring to FIG. 2, there is shown a diagrammatic view of infusion pump assembly 100. Infusion pump assembly 100 may be configured to deliver infusible fluid 200 to user 202. Infusible fluid 200 may be delivered intravenously (i.e., into a vein), subcutaneously (i.e., into the skin), arterially (i.e., into an artery), and epidurally (i.e., into the epidural space). Examples of infusible fluid 200 may include but are not limited to insulin, nutrients, saline solution, antibiotics, analgesics, anesthetics, hormones, vasoactive drugs, and chelation drugs, and any other therapeutic fluids

Facts

Application

14/500,082Filed 29 Sep 2014 · continuation

Priority

18 May 2001

Published

US 2015/0018768 A115 Jan 2015

Granted

12 Apr 2016

Term ended

4 Jan 2022

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification28 codes

A61M 5/5086
Having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile: for indicating if defective, used, tampered…
A61M 5/14244
Pressure infusion, e.g. using pumps: adapted to be carried by the patient, e.g. portable on the body
A61M 5/145
Pressure infusion, e.g. using pumps: using pressurised reservoirs, e.g. by means of pistons
A61M 5/1452
Using pressurised reservoirs, e.g. by means of pistons: pressurised by means of pistons

Family

Application60/291,881Us provisional application · filed 18 May 2001

Application10/037,614Parent of this continuation-in-part · filed 4 Jan 2002

Application10/151,733Parent of this continuation · filed 20 May 2002

Application11/533,882Parent of this continuation-in-part · filed 21 Sep 2006

US 7,306,578 B2Parent of this continuation-in-part · filed 11 Dec 2007

Application12/249,891Parent of this continuation · filed 10 Oct 2008

Application12/413,234Parent of this continuation · filed 27 Mar 2009

US 8,034,026 B2Parent of this continuation · filed 11 Oct 2011

US 8,845,587 B2Parent of this continuation · filed 30 Sep 2014

US 2015/0018768 A1Pre-grant publication · published 15 Jan 2015

Application12/413,234Parent of this continuation

US 9,173,996 B2Parent of this continuation-in-part

Application12/249,891Parent of this continuation-in-part

Application11/533,882Parent of this continuation

Application10/151,733Parent of this continuation-in-part

US 2002/0173769 A1Published application

US 2003/0130618 A1Published application

US 2007/0049870 A1Published application

US 2009/0099523 A1Published application

US 2012/0209194 A1Published application

US 9,308,318 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

18 May 2001Priority claimedParent application 60/291,881
29 Sep 2014Application filedUS 14/500,082
15 Jan 2015PublishedUS 2015/0018768 A1
30 Mar 2016Assigned to Deka Products Limited Partnershipassignment of assignor's interest
12 Apr 2016GrantedUS 9,308,318 B2
30 Jun 2016Assigned to Eugly Diabetes Care LLCassignment of assignor's interest
4 Jan 2022Term endedEstimated

Infusion pump assembly

Life of this patent

Infusion pump assembly

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims12

Description22,278 words

Drawings

Classification28 codes

Life of this patent

Description22,278 words