Separable hub post of pen needle

Patent metadata

Field	Value
Publication number	US-10022504-B2
Application number	US-201013261197-A
Country	US
Kind code	B2
Filing date	Sep 15, 2010
Priority date	Sep 18, 2009
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A pen needle (101) for use with a drug delivery device (100) includes a hub body (113) having internal threads (216) to receive the drug delivery device (100). A post (121) is connected to the hub body (113). A needle (103) is rigidly fixed to the post (121). The post (121) is separable from the hub body (113) such that the needle (103) is removed with the post (121). The fluid path is not disturbed by such removal because the entire needle (103) is removed with the post (121). Removal of only the post (121) and needle (103) reduces the volume of waste required for disposal, thereby increasing the effective capacity of a sharps container.

First claim

The invention claimed is:

1. A pen needle for use with a drug delivery device, comprising:
a hub body having internal threads to receive the drug delivery device, said hub body having a projection extending outwardly proximally from said hub body and integrally formed with said hub body as a one piece member, the hub having a passageway that extends through the entire projection;
a post removably connected to said projection within said passageway in said hub; and
a needle rigidly fixed to said post; and
a first flange at a patient end of the post spaced axially from the projection;
a second flange on said post axially spaced towards a non-patient end from said first flange and having a diameter larger than the passageway to prevent insertion of the post into the projection past the second flange; and
a flexible tab disposed at the non-patient end of said post and extending past a non-patient end of the projection and out of the passageway to prevent accidental withdrawal of said post from said projection,
wherein said post is separable from said hub body such that said needle is removed in its entirety with said post;
wherein an entire length of said passageway is the same as a length of said post from said second flange to said flexible tab.

2. The pen needle according to claim 1 , wherein
said hub body has a base and a wall extending outwardly therefrom, and said projection extends from said base in a direction opposite to said wall.

3. The pen needle according to claim 1 , wherein said flexible tab has a width larger than that of said passageway.

4. The pen needle according to claim 3 , wherein
said flexible tab compresses to allow removal of said post from said projection.

5. The pen needle according to claim 1 , wherein
said second flange has a width larger than that of said passageway to limit insertion of said post in said projection.

6. The pen needle according to claim 1 , wherein
said post is removed from said projection in its entirety.

7. The pen needle according to claim 1 , wherein
said second flange is connected to said post to facilitate removal of said post from said projection.

8. The pen needle according to claim 1 , wherein
when said post is located within said passageway said second flange contacts a patient end surface of said projection and said flexible tab contacts a non-patient end surface of said projection.

Assignees

• Horvath Joshua
• Brizzolara Joseph
• Hwang Charles
• Bates James
• Knapp Keith
• Becton Dickinson Co

Inventors

• Horvath Joshua
• Brizzolara Joseph
• Hwang Charles
• Bates James
• Knapp Keith

Classifications

• A61M2005/3206

  Needle or needle hub disconnecting devices forming part of or being attached to the hub or syringe body · CPC title

• A61M5/3293

  characterised by features of the needle hub · CPC title

• A61M5/344

  using additional parts, e.g. clamping rings or collets · CPC title

• A61M5/3205 Primary

  Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles (for sharps A61B50/362; disintegrating apparatus in general B02C, e.g. B02C19/0075, B23H9/001; disposal of medical waste in general B09B3/00; receptacles for refuse disposal in general B65F1/00) · CPC title

• A61M2005/3279

  Breaking syringe nozzles or needle hubs · CPC title