Needle Safety Device and Drug Delivery Device

Patent metadata

Field	Value
Publication number	US-2016354552-A1
Application number	US-201415104865-A
Country	US
Kind code	A1
Filing date	Dec 18, 2014
Priority date	Dec 20, 2013
Publication date	Dec 8, 2016
Grant date	—

Abstract

The invention refers to a needle safety device ( 4 ) for a drug delivery device ( 1 ) comprising a needle cap remover ( 8 ) adapted to capture a needle cap ( 6 ) by a positive and/or non-positive connection, wherein the needle cap remover ( 8 ) comprises a top end ( 8.3 ), a needle shield ( 7 ) adapted to cover a needle ( 5 ) of the drug delivery device ( 2 ) before and after injection, wherein the needle shield ( 7 ) comprises a needle shield end ( 7.4 ) adapted to engage an injection site, and at least one blocking pin ( 9 ) which inwardly extends from the top end ( 8.3 ) and/or the needle shield end ( 7.4 ) into the needle cap remover ( 8 ) and/or into the needle shield ( 7 ).

First claim

1 - 10 . (canceled)

11 . A needle safety device for a drug delivery device, comprising:
a needle cap remover adapted to capture a needle cap by at least one of a positive connection and a non-positive connection, wherein the needle cap remover comprises a top end; a needle shield adapted to cover a needle of the drug delivery device before and after injection, wherein the needle shield comprises a needle shield end adapted to engage an injection site; at least one blocking pin which inwardly extends from the top end into at least one of the needle cap remover and the needle shield; and a guiding arrangement comprising a guide track and a corresponding flexible guide arm, wherein one of the guiding track and the guide arm is arranged at a housing and the other of the guiding track and the guide arm is arranged at the needle shield, wherein the at least one blocking pin is adapted to obstruct the guiding arrangement such that the guide arm is inhibited from moving into the guide track, thereby blocking the guiding arrangement.

12 . The needle safety device according to claim 11 , wherein the at least one blocking pin comprises at least two oppositely disposed blocking pins.

13 . The needle safety device according to claim 11 , wherein the at least one blocking pin is integral to the needle cap remover.

14 . The needle safety device according to claim 11 , wherein the at least one blocking pin is carried through at least one of the top end and the needle shield end, and an outside end of the at least one blocking pin is adapted to form a button.

15 . The needle safety device according to claim 14 , wherein the button is formed as a protruding button.

16 . The needle safety device according to claim 15 , wherein the at least one blocking pin comprises a recess adapted to a shape of a guide arm of the needle shield.

17 . The needle safety device according to claim 14 , wherein the button is formed as flat button.

18 . The needle safety device according to claim 14 , wherein a gripping portion is arranged at a top end of the needle cap remover.

19 . The needle safety device according to claim 11 , wherein the at least one blocking pin comprises a locking hook adapted to lock the at least one blocking pin in a distal direction.

20 . A drug delivery device comprising:
a housing; a needle safety device mounted to the housing of the drug delivery device, the needle safety device comprising
a needle cap remover adapted to capture a needle cap by at least one of a positive connection and a non-positive connection, wherein the needle cap remover comprises a top end;
a needle shield adapted to cover a needle of the drug delivery device before and after injection, wherein the needle shield comprises a needle shield end adapted to engage an injection site;
at least one blocking pin which inwardly extends from the top end into at least one of the needle cap remover and the needle shield; and
a guiding arrangement comprising a guide track and a corresponding flexible guide arm, wherein one of the guiding track and the guide arm is arranged at a housing and the other of the guiding track and the guide arm is arranged at the needle shield,
wherein the at least one blocking pin is adapted to obstruct the guiding arrangement such that the guide arm is inhibited from moving into the guide track, thereby blocking the guiding arrangement.

21 . The drug delivery device of claim 20 , wherein the drug delivery device is an autoinjector or an injection pen.

22 . The drug delivery device of claim 20 , further comprising a medicament container comprising a medicament having at least one pharmaceutically active compound.

23 . A method of operating a drug delivery device, the method comprising:
removing a needle cap from the drug delivery device; releasing at least one blocking pin from a guiding arrangement of the drug delivery device to enable a needle shield of the drug delivery device to retract; and pushing a distal end of the drug delivery device against an injection site to cause the needle shield to retract, thereby activating the drug delivery device for injection of a medicament.

24 . The method of claim 23 , wherein removing the needle cap comprises removing the at least one blocking pin from the guiding arrangement of the drug delivery device.

25 . The method of claim 23 , wherein pushing the distal end of the drug delivery device against the injection site comprises:
pushing the at least one blocking pin against the injection site to release the at least one blocking pin from the guiding arrangement to enable the needle shield to retract, and then pushing the needle shield against the injection site to activate the drug delivery device.

26 . The method of claim 25 , further comprising, after pushing the distal end of the drug delivery device against the injection site, releasing the distal end of the drug delivery device from the injection site such that a locking hook of the at least one blocking pin locks the at least one blocking pin to inhibit movement of the needle shield.

27 . The method of claim 23 , wherein releasing the at least one blocking pin comprises, after removing the needle cap from the drug delivery device, removing a blocking component from the drug delivery device, wherein the blocking component comprises the at least one blocking pin.

28 . The method of claim 23 , wherein releasing the at least one blocking pin from the guiding arrangement comprises releasing the at least one blocking pin from the guiding arrangement such that a guide arm of the guiding arrangement is movable into a guide track of the guiding arrangement, thereby enabling the needle shield to retract.

29 . The method of claim 28 , wherein releasing the at least one blocking pin from the guiding arrangement comprises causing the guide arm of the guide arrangement to slide into a recess of the at least one blocking pin such that the guide arm of the guide arrangement is movable into the guide track.

30 . The method of claim 28 , wherein pushing the distal end of the drug delivery device against the injection site causes the needle shield to retract relative to a housing of the drug delivery device, wherein one of the guide track and the guide arm is arranged at a housing and the other of the guide track and the guide arm is arranged at the needle shield.

Assignees

• Sanofi Aventis Deutschland

Inventors

• Keim Moritz
• Huthmacher Winfried
• Nober Peter

Classifications

• A61M5/3204 Primary

  Needle cap remover, i.e. devices to dislodge protection cover from needle or needle hub, e.g. deshielding devices · CPC title

• A61M5/3245

  Constructional features thereof, e.g. to improve manipulation or functioning · CPC title

• A61M5/3271

  with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position · CPC title

• A61M5/326

  Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user · CPC title

• A61M2005/3267

  Biased sleeves where the needle is uncovered by insertion of the needle into a patient's body · CPC title