POSITIVE DISPLACEMENT PUMP

• US 20150352276A1
• Filed: 08/14/2015
• Published: 12/10/2015
• Est. Priority Date: 05/11/2007
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Inventors: Yodfat, Ofer, Neta, Avraham, Shalev, Yossi
• Granted Patent: US 10,398,831 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/14208 with a programmable infusion control system, characterised by the infusion program
• CPC Class Codes: A61M 2005/14252 with needle insertion means
• CPC Class Codes: A61M 2005/14268 with a reusable and a disposable component
• CPC Class Codes: A61M 2202/0007 introduced into the body
• CPC Class Codes: A61M 2205/3569 sublocal, e.g. between console and disposable
• CPC Class Codes: A61M 2205/3592 using telemetric means, e.g. radio or optical transmission
• CPC Class Codes: A61M 2210/04 Skin
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: A61M 5/148 flexible, e.g. independent bagsA61M5/155 takes precedence
• CPC Class Codes: A61M 5/172 electrical or electronic A61M5/16804, A61M5/16831 take precedence
• CPC Class Codes: F04B 43/1269 the rotary axes of the rollers lying in a plane perpendicular to the rotary axis of the driving motor

Abstract

Systems, methods and apparatuses for delivering therapeutic fluid to the body of a patient are disclosed. The apparatus includes a dispensing unit having a driving mechanism, a pumping mechanism, a reservoir containing therapeutic fluid, and an outlet port. The driving mechanism causes the pumping mechanism to positively displace therapeutic fluid within the reservoir for delivery of therapeutic fluid to the body of the patient via the outlet port.

Claims

1. An apparatus for delivering a therapeutic fluid into a body of a patient, comprising:

at least one housing accommodating therein;

a dispensing unit comprising;

a reusable part;

a disposable part comprising a reservoir for the therapeutic fluid;

a plunger having a plunger head and a plunger rod for displacing the therapeutic fluid from the reservoir to an outlet port;

a driving mechanism; and

an electronic component including at least a controller for controlling at least the operation of the driving mechanism.

2. The apparatus of claim 1 wherein the reservoir has a substantially flat cross-sectional profile with a shape selected from the group consisting of an oval, an ellipse, and a rectangle.

3. The apparatus of claim 1, wherein the disposable part comprises a cross-section of less than fifteen millimeters.

4. The apparatus of claim 1 wherein the reservoir is a part of a syringe fitted with the plunger, and the plunger comprises a displaceable piston plunger.

5. The apparatus of claim 1 wherein the reservoir is coupled to the outlet port via a tubular connection therebetween.

6. The apparatus of claim 1 wherein the reservoir comprises an outlet port, and the outlet port of the reservoir is configured and dimensioned to fit to a standard drug glass bottle cork.

7. The apparatus of claim 1 wherein the reservoir comprises an outlet port, and the outlet port of the reservoir is provided with a short connecting element having a sharp hollow tip for fluid communication between the reservoir and a bottle, enabling drug drawing from the bottle upon backward movement of the plunger while the bottle is positioned upside down.

8. The apparatus of claim 1 wherein the fluid is drawn from a container by pulling on a shaft of the plunger that creates a suction effect thereby drawing the fluid from the container.

9. The apparatus of claim 1 wherein the reservoir has either an elliptical or an oval cross-sectional configuration such that the reservoir has a profile comprising a thickness of about ten millimeters.

10. The apparatus of claim 1 wherein the reservoir contains a maximum of two cubic centimeters of fluid.

11. The apparatus of claim 1 wherein the reservoir resides within the disposable part of an external housing, such housing made at least partially from a transparent material to allow the patient to continuously monitor a level and/or a content of fluid in the reservoir.

12. The apparatus of claim 1 wherein an outlet port of the disposable part allows direct filling of the reservoir with the therapeutic fluid from a therapeutic fluid container connectable to the disposable part.

13. The apparatus of claim 1 further comprising a detachable auxiliary rod coupleable to the plunger head when the plunger rod is disconnected from the plunger head, for enabling the pulling of the plunger head outwardly within the reservoir.

14. A method for delivering a therapeutic fluid into a body of a patient, comprising:

providing an apparatus comprising at least one housing accommodating therein;

at least one housing accommodating therein;

a dispensing unit comprising;

a reusable part;

a disposable part comprising a reservoir for the therapeutic fluid;

a plunger having a plunger head and a plunger rod for displacing the therapeutic fluid from the reservoir;

a driving mechanism; and

an electronic component including at least a controller for controlling at least the operation of the driving mechanism; and

piercing a septum of a container with a connecting element of the reservoir; and

pulling on a shaft of the plunger, creating a suction effect thereby drawing the therapeutic fluid from the container.

15. The method of claim 14 further comprising filling the reservoir by engaging an outlet port of the reservoir with a rubber cork of a bottle.

16. The method of claim 14 further comprising piercing a septum of a container with a connecting element of the reservoir, thereby allowing transfer of the therapeutic fluid from the container to the reservoir.

17. The method of claim 14 further comprising disconnecting the plunger rod from the plunger head and coupling an auxiliary rod to the plunger head, followed by pulling of the plunger head outwardly within the reservoir.