Therapeutic agent injection device

• US 9,265,881 B2
• Filed: 10/14/2013
• Issued: 02/23/2016
• Est. Priority Date: 10/14/2013
• Status: Active Grant

• Current Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Minimed Incorporated (Medtronic Plc)
• Inventors: Montalvo, Susan McConnell, Chong, Colin A., Bikovsky, Rafael, Lickliter, Hans
• Primary Examiner(s): Stigell, Theodore
• Assistant Examiner(s): STILES, AMBER R.
• Application Number:
  US14/052,929
• Publication Number:
  US 20150105724A1
• Time in Patent Office: 862 Days
• Field of Search: 604/118, 604/131, 604/164.01, 604/164.04, 604/180, 60428801-28804, 604/513
• US Class Current: 1/1
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/1586 Holding accessories for holding infusion needles on the body
• CPC Class Codes: A61M 2005/1588 having means for monitoring, controlling or visual inspection, e.g. for patency check, avoiding extravasation
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/16831 Monitoring, detecting, signalling or eliminating infusion flow anomalies low-level float-valves causing cut-off A61M5/40; indicating or recording presence, absence or direction of flow in general G01P13/0066

Abstract

A therapeutic agent injection device including an injection device for delivering a therapeutic agent to a patient having a body, the body having a patient face and a port face opposite the patient face, the port face having an introducer port including an introducer channel and an injection port including an injection channel, the introducer channel being in fluid communication with the injection channel through a cross channel, the injection channel defining an injection axis; a delivery tube for subcutaneous delivery of the therapeutic agent to the patient, the delivery tube projecting from and being generally perpendicular to the patient face, the delivery tube defining an introducer axis and being in fluid communication with the injection port; and a patch, the patch being attached to the patient face and being operable to adhesively attach to the patient; wherein the injection axis is parallel to the introducer axis.

Claims

1. An injection device for delivering a therapeutic agent to a patient, the injection device comprising:

a body having a patient face and a port face opposite the patient face, the port face having an introducer port including an introducer channel and an injection port including an injection channel, the introducer channel being in fluid communication with the injection channel, the injection channel defining an injection axis;

a delivery tube for subcutaneous delivery of the therapeutic agent to the patient, the delivery tube projecting from and being generally perpendicular to the patient face, the delivery tube defining an introducer axis and being in fluid communication with the injection port;

a patch attached to the patient face and operable to adhesively attach to the patient; and

an injection adapter assembly removably connected to the injection port, the injection adapter assembly receiving a needleless pen injector;

wherein the body has a first body portion including the port face and a second body portion including the patient face, the first body portion and the second body portion being rotatably connected with a flange, the first body portion and the second body portion being independently rotatable about the introducer axis.

2. The injection device of claim 1 wherein the body and the needleless pen injector have complementary threads operable to secure the needleless pen injector to the body.

3. The injection device of claim 1 wherein the injection adapter assembly includes a recess to receive the needleless pen injector, the recess and the needleless pen injector having complementary threads operable to secure the needleless pen injector within the recess.

4. The injection device of claim 1 wherein the injection adapter assembly includes a recess to receive the needleless pen injector, the recess including an adapter needle operable to access the therapeutic agent contained within the needleless pen injector.

5. The injection device of claim 4 wherein the needleless pen injector has an end with a foil across the end, the foil being pierceable by the adapter needle.

6. The injection device of claim 4 wherein the needleless pen injector has an end with a pen port disposed in the end, the pen port being openable by the adapter needle.

7. The injection device of claim 1 further comprising a pop-up indicator disposed in the introducer channel, the pop-up indicator having a normal state when pressure in the introducer channel is normal and an alarm state when pressure in the introducer channel exceeds a predetermined value.

8. The injection device of claim 7 wherein the pop-up indicator includes a self-closing port operable to receive a needle of a needle hub assembly.

9. The injection device of claim 7 wherein the pop-up indicator has a membrane selected from the group consisting of a folded membrane, an accordion membrane, and a deformable membrane.