Self-injection device

• US 10,080,846 B2
• Filed: 12/15/2016
• Issued: 09/25/2018
• Est. Priority Date: 12/16/2009
• Status: Active Grant

• Current Assignee: Becton, Dickinson & Co
• Original Assignee: Becton, Dickinson & Co
• Inventors: Sonderegger, Ralph, Alexander, Jason, Christensen, Corey, George, Ryan, Ingleby, J'Lynn, Chase, Patty, Bingham, Curt
• Primary Examiner(s): OSINSKI, BRADLEY JAMES
• Application Number:
  US15/380,470
• Publication Number:
  US 20170095614A1
• Time in Patent Office: 649 Days
• CPC Class Codes: A61M 2005/14506 mechanically driven, e.g. spring or clockwork
• CPC Class Codes: A61M 2005/206 With automatic needle insertion
• CPC Class Codes: A61M 2005/3126 Specific display means related to dosing
• CPC Class Codes: A61M 2037/0023 Drug applicators using microneedles
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 2205/58 Means for facilitating use, e.g. by people with impaired vision
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/584 having a color code
• CPC Class Codes: A61M 37/0015 by using microneedles
• 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 5/14248 of the skin patch type
• 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 5/1626 Needle protectors therefor in combination with syringes A61M5/3202; protectors for sharps A61B50/3001
• CPC Class Codes: A61M 5/16813 by controlling the degree of opening of the flow line
• CPC Class Codes: A61M 5/2033 Spring-loaded one-shot injectors with or without automatic needle insertion multishot dosing syringes A61M5/31525, needle insertion only A61M5/3287
• CPC Class Codes: A61M 5/31528 by means of rotational movements, e.g. screw-thread mechanisms
• CPC Class Codes: A61M 5/3157 Means providing feedback signals when administration is completed A61M5/20 takes precedence
• 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
• CPC Class Codes: A61M 5/3232 : Semi-automatic needle retraction, i.e. in which triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means

Abstract

A device for delivering a medicament into a patient'"'"'s body by injection into or through the patient'"'"'s skin includes a body having a reservoir disposed therein for containing the medicament, an injection needle for penetrating the skin of the patient, the needle having a lumen and communicating with the reservoir, and a pressurizing system for pressurizing the reservoir. The device also includes indicator means visible outside the device for indicating that delivery of the medicament is substantially complete.

Claims

1. A drug delivery device, comprising:

a body having a reservoir disposed therein for containing a medicament;

an injection needle for penetrating a patient'"'"'s skin, the needle being in fluid communication with the reservoir;

a pressurization unit and a plunger movable within the body under a force of the pressurization unit for contacting the reservoir; and

an end-of-dose indicator visible outside the device for indicating that delivery of the medicament is substantially complete, the end-of-dose indicator comprising a post rotatably disposed within the body and having a helical face; and

wherein the helical face of the post bears against an edge of the plunger such that motion of the plunger rotates the post from an initial position to a second position, indicating that delivery of the medicament is substantially complete.

2. The device according to claim 1, wherein the end-of-dose indicator further comprises:

an arm extending from an end of the post; and

a vertical extrusion extending from an end of the arm through the body to be visible from outside the device.

3. The device according to claim 2, wherein the body includes:

an arcuate opening through which the vertical extrusion extends; and

a marker disposed adjacent to the opening, indicating a progress of the delivery of the medicament.

4. The device according to claim 1, wherein the pressurization unit comprises a pressurization spring.

5. The device according to claim 1, wherein throughout the motion of the plunger, the end-of-dose indicator bears against the edge of the plunger.

6. The device according to claim 1, wherein the interaction between the helical face and the edge of the plunger during the motion of the plunger induces less than a full rotation of the post.

7. The device according to claim 1, wherein a pitch of the helical face induces less than a full rotation of the post during the motion of the plunger.

8. The device according to claim 1, wherein the interaction between helical face and the edge of the plunger during the motion of the plunger induces at least one full rotation of the post.

9. The device according to claim 1, wherein a pitch of the helical face induces at least one full rotation of the post during the motion of the plunger.