IP Library › Granted Patent US 12,434,011
Granted Patent B1
US 12,434,011 · App. 19/063,738 · Granted Oct 7, 2025

Medicament delivery device

Inventors: Alexander Hee-Hanson (Melbourn, GB); Thomas Lever (Melbourn, GB); Michael Parrott (Melbourn, GB); Robert Wilson (Melbourn, GB); Haiming Wu (Cambridge, MA)
Assignee: Genzyme Corporation
A61M5/3202A61M2005/2073A61M2207/00
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Quick Facts
Patent No.
US 12,434,011
App. No.
19/063,738
Granted
Oct 7, 2025
Kind
B1
Abstract

A medicament delivery device for injecting medicament which has a body having a proximal end and a distal end, a needle for injecting medicament and an actuation member which is movable relative to the body. The actuation member is movable from a first position to a second position and movable from the second position to a dispensing position for dispensing medicament from the needle. The second position is proximal of the first position. The medicament delivery device further has a cap which is removably attached to the medicament delivery device. The cap has a portion configured to prevent movement of the actuation member from the first position to the second position when the cap is attached to the medicament delivery device.

Claims (21)

1. A medicament delivery device for injecting medicament, the medicament delivery device comprising:

a body having a proximal end and a distal end;

a needle;

an actuation member movable relative to the body, wherein the actuation member is movable from a first position to a second position, wherein the second position is proximal of the first position, and wherein the actuation member is movable from the second position to a dispensing position for dispensing the medicament via the needle; and

a cap removably attached to the medicament delivery device, wherein the cap comprises a proximally-extending portion configured to prevent movement of the actuation member from the first position to the second position when the cap is attached to the medicament delivery device;

wherein the actuation member comprises an axially-extending component which engages the proximally-extending portion when the cap is attached to the medicament delivery device for preventing movement of the actuation member from the first position to the second position;

wherein one of the proximally-extending portion and the axially-extending component comprises a protrusion and the other of the proximally-extending portion and the axially-extending component comprises a recess, wherein the protrusion is received in the recess when the cap is attached to the medicament delivery device to prevent movement of the actuation member from the first position to the second position.

2. The medicament delivery device of claim 1 , wherein the medicament delivery device comprises a bias configured to bias the actuation member from the first position to the second position.

3. The medicament delivery device of claim 1 , wherein the actuation member is configured such that when the actuation member is in the first position, the proximal end of the actuation member is located distally from the proximal end of the medicament delivery device.

4. The medicament delivery device of claim 1 , wherein the actuation member is configured such that when the actuation member is in the second position, the actuation member protrudes from a part of the medicament delivery device.

5. The medicament delivery device of claim 1 , wherein at least one of the recess and the protrusion comprises a ramped surface for allowing the protrusion to disengage the recess when the cap is removed from the medicament delivery device.

6. The medicament delivery device of claim 1 , wherein the proximally-extending portion is flexible, and wherein the proximally-extending portion is configured to flex when the cap moves distally and the protrusion disengages the recess.

7. The medicament delivery device of claim 1 , wherein the medicament delivery device comprises a lock ring configured to rotate the actuation member relative to the body from the second position to a third position, and wherein the actuation member is distally movable from the third position to the dispensing position.

8. The medicament delivery device of claim 1 , wherein the cap is configured such that when the cap is attached to the body, the cap covers the distal end of the body for preventing access to the needle.

9. The medicament delivery device of claim 1 , wherein the cap is removably attached to the body.

10. The medicament delivery device of claim 1 , further comprising a dispensing mechanism configured to dispense medicament via the needle, and wherein the actuation member is configured to release the dispensing mechanism when the actuation member is in the dispensing position.

11. The medicament delivery device of claim 1 , wherein the actuation member is configured to be rotated relative to the body.

12. The medicament delivery device of claim 1 , wherein the actuation member comprises one of a slot and a protrusion, and wherein a second component of the medicament delivery device comprises the other of the slot and the protrusion, wherein the protrusion is located in the slot and wherein the slot has a circumferentially-extending portion configured to rotate the actuation member relative to the second component when the protrusion moves in the circumferentially-extending portion and the actuation member moves from the first position to the second position.

13. The medicament delivery device of claim 12 , wherein the second component is the body.

14. The medicament delivery device of claim 1 , wherein the actuation member comprises a button configured to be pressed to move the actuation member to the dispensing position.

15. The medicament delivery device of claim 1 , further comprising a container containing the medicament.

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