Patent ID: 11918797
Assignee: SCHOTT PHARMA SCHWEIZ AG
Field: Pharmaceuticals (Chemistry)
Classification: CPC A | IPC A

Claim 8:
9. An injection device, comprising:
a syringe body having a hollow cylindrical configuration and forming a chamber configured to receive a highly viscous medium, the syringe body comprising:
a distal end portion;
a proximal end portion having an opening; and
a Luer lock connector formed at the distal end portion, the Luer lock connector comprising an outer cone with a further opening configured to dispense the highly viscous medium and a sleeve-shaped portion with an inner thread, the syringe body having a minimum needle pop-off (NPO) resistance of over 90 N, wherein the inner thread has a smallest internal diameter of between 7.05 mm and 7.15 mm, wherein the inner thread, at a crest of a thread profile of the inner thread, has a breadth of between 0.44 mm and 0.52 mm, and wherein the inner thread, at a root of the thread profile, has a breadth of between 0.85 mm and 0.95 mm; and
a needle arrangement comprising a needle hub coupled to the Luer lock connector and carrying a cannula, the needle hub comprising an inner chamber that is fluidly coupled with the further opening and a projection extending into the inner chamber that fluidly couples the cannula to the inner chamber; and

a piston rod arrangement comprising a piston rod and a piston mounted on a distal end of the piston rod, received in the chamber via the opening at the proximal end portion of the syringe body, and guided displaceably in the chamber.