US 11,744,955 B2
Sheath remover and methods for assembly thereof
Winfried Huthmacher, Frankfurt am Main (DE)
Assigned to Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed by Sanofi-Aventis Deutschland GMBH, Frankfurt am Main (DE)
Filed on Jan. 10, 2023, as Appl. No. 18/95,075.
Application 18/095,075 is a continuation of application No. 17/738,217, filed on May 6, 2022.
Application 17/738,217 is a continuation of application No. 16/302,531, granted, now 11,344,679, issued on May 31, 2022, previously published as PCT/EP2017/061566, filed on May 15, 2017.
Claims priority of application No. 16170070 (EP), filed on May 18, 2016.
Prior Publication US 2023/0149634 A1, May 18, 2023
Int. Cl. A61M 5/32 (2006.01)
CPC A61M 5/3204 (2013.01) [A61M 5/321 (2013.01); A61M 5/3202 (2013.01); A61M 2207/00 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A drug delivery device, comprising:
a drug cartridge with an injection needle;
a protective needle sheath configured to cover the injection needle; and
a sheath remover arrangement comprising:
a sheath remover for removing the protective needle sheath from the injection needle, the sheath remover comprising:
a ring; and
two or more resilient legs attached to the ring and extending in a proximal direction, the two or more resilient legs defining a space therebetween to receive the protective needle sheath, wherein each resilient leg of the two or more resilient legs comprises an inwardly directed projection arranged at a proximal end of the resilient leg; and
a cap comprising a proximal section, a distal section, and a step between the proximal and distal sections, wherein the ring is disposed in the distal section of the cap and the step is configured to abut a proximal end of the ring to limit proximal movement of the sheath remover relative to the cap,
wherein an internal diameter of the distal section of the cap is greater than or equal to an external diameter of the proximal end of the ring and an internal diameter of the proximal section of the cap is less than the external diameter of the proximal end of the ring.
 
27. A drug delivery device, comprising:
a drug cartridge with an injection needle;
a protective needle sheath configured to cover the injection needle; and
a sheath remover arrangement comprising:
a sheath remover for removing the protective needle sheath from the injection needle, the sheath remover comprising:
a ring; and
two or more resilient legs attached to the ring and extending in a proximal direction, the two or more resilient legs defining a space therebetween to receive the protective needle sheath, wherein each resilient leg of the two or more resilient legs comprises an inwardly directed projection arranged at a proximal end of the resilient leg; and
a cap comprising a proximal section, a distal section, and a step between the proximal and distal sections, wherein the ring is disposed in the distal section of the cap and the cap is configured to move relative to the ring between a first position in which the step is spaced apart from a proximal end of the ring and a second position in which the step abuts the proximal end of the ring to limit proximal movement of the sheath remover relative to the cap.
 
29. A drug delivery device, comprising:
a drug cartridge with an injection needle;
a protective needle sheath; and
a sheath remover assembly comprising:
a sheath remover for removing the protective needle sheath from the injection needle, the sheath remover comprising:
a ring; and
two or more resilient legs attached to the ring and extending in a proximal direction, the two or more resilient legs defining a space therebetween to receive the protective needle sheath, wherein each resilient leg of the two or more resilient legs comprises an inwardly directed projection arranged at a proximal end of the resilient leg; and
a cap comprising a proximal section, a distal section, and an inward protrusion between the proximal and distal sections, the inward protrusion disposed outward of the two or more resilient legs, wherein the ring is disposed in the distal section of the cap and the inward protrusion is configured to abut a proximal end of the ring to limit proximal movement of the sheath remover relative to the cap.