Portable infusion pump

• US 10,010,681 B2
• Filed: 10/22/2014
• Issued: 07/03/2018
• Est. Priority Date: 10/23/2013
• Status: Active Grant

• Current Assignee: Shl Medical AG
• Original Assignee: Carebay Europe Limited
• Inventors: Koch, Eugen, Yang, Cheng-Jung, Scholze, Laura
• Primary Examiner(s): Vu, Quynh-Nhu H
• Application Number:
  US15/031,582
• Publication Number:
  US 20160250422A1
• Time in Patent Office: 1,350 Days
• CPC Class Codes: A61M 2005/14256 with means for preventing access to the needle after use
• CPC Class Codes: A61M 2005/31518 designed to reduce the overall size of an injection device, e.g. using flexible or pivotally connected chain-like rod members
• CPC Class Codes: A61M 2005/3247 Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
• CPC Class Codes: A61M 5/1424 Manually operated pumps
• CPC Class Codes: A61M 5/14248 of the skin patch type
• CPC Class Codes: A61M 5/1454 spring-actuated, e.g. by a clockwork
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump
• CPC Class Codes: A61M 5/168 Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body flow control in general G05D7/00
• CPC Class Codes: A61M 5/3204 Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices

Abstract

A medicament delivery device includes a housing with a compartment for a medicament container, an injection needle arranged to housing and connectable to the medicament container for delivering a dose of medicament, a manually operated activation mechanism, an actuation mechanism operably connected to the activation mechanism and configured to extend the injection needle, upon activation of the activation mechanism, from a first position inside the housing to a second position for penetrating a patient, a plunger rod in the housing configured to act on the medicament container for delivering a dose of medicament through the injection needle, a driver configured to acting on the plunger rod for delivering the dose, and a needle cover operably arranged in the housing between a position inside the housing and an extended position outside the housing for shielding the injection needle when the injection needle is in the second position.

Claims

1. A medicament delivery device, comprising:

a housing;

a compartment in the housing for positioning a medicament container;

an injection needle arranged to the housing and connectable to the medicament container for supplying a dose of medicament;

a manually operated an activation mechanism for activating the device;

an actuation mechanism operably connected to the activation mechanism and configured to move and extend the injection needle from a first position inside the housing to a second position for penetration of a patient upon activation of the activation mechanism;

a plunger rod positioned within the housing to act on the medicament container during delivery of the dose of medicament through the injection needle, where movement of plunger rod is in a direction transverse to a movement of the injection needle from the first position to the second position;

a driver configured to act on the plunger rod for delivering the dose of medicament; and

a needle cover moveable relative to the injection needle and operably arranged in the housing between a position inside the housing and an extended position outside the housing for shielding the injection needle when the medicament container has been emptied.

2. The medicament delivery device of claim 1, wherein the actuation mechanism further comprises a linkage configured to lock the injection needle in the second position.

3. The medicament delivery device of claim 2, wherein the housing has an inner surface comprising a ledge that engages the needle cover to lock the needle cover in the extended position.

4. The medicament delivery device of claim 3, wherein the activation mechanism comprises two operating elements disposed on opposite sides of the medicament delivery device.

5. The medicament delivery device of claim 4, wherein the two operating elements comprise activation buttons that are manually depressed for activating the device.

6. The medicament delivery device of claim 5, wherein the activation buttons are connected to the injection needle via a linkage included in the actuation mechanism, thereby enabling movement of the injection needle to the extended position when the activation buttons are depressed.

7. The medicament delivery device of claim 6, wherein the linkage comprises a holding element.

8. The medicament delivery device of claim 1, further comprising an injection speed control mechanism operatively connected to the driver.

9. The medicament delivery device of claim 8, wherein the injection speed control mechanism comprises a balance wheel that interacts with a pallet fork that acts on an escapement wheel, and a transmission between the driver and the escapement wheel.

10. The medicament delivery device of claim 9, further comprising a balance spring drivably connected to the escapement wheel.

11. The medicament delivery device of claim 8, further comprising an auto-stop mechanism configured to stop the driver or the injection speed control mechanism at conclusion of a dose delivery sequence.

12. The medicament delivery device of claim 8, further comprising a manually operable stop mechanism configured to stop the driver or the injection speed control mechanism upon activation.

13. The medicament delivery device of claim 8, further comprising a manually operated pausing mechanism configured to stop and start the driver or the injection speed control mechanism upon activation.

14. The medicament delivery device of claim 12, further comprising a medicament container penetration mechanism operably connected to the activation mechanism and configured to cause, upon activation, a communication between medicament inside the medicament container and the injection needle.

15. The medicament delivery device of claim 1, wherein the plunger rod comprises a number of segments that are inter-connectable to each other.