Henrik Bengtsson,Lars Korsbjerg Nielsen,Bo Kvolsbjerg
申请号：
US16650584
公开号：
US20200230325A1
申请日:
2018.09.28
申请国别(地区):
US
年份:
2020
代理人:
摘要：
A cartridge system for use with a drug delivery device (100′；), comprising: —；a pre-filled cartridge comprising: a) a cartridge body (210) accommodating a drug, b) a piston (250) slidably disposed in the cartridge body (210) and configured for providing a proximal seal, the piston (250) comprising: b1) a piston first member (260) comprising a first material and forming a distal end, a proximal end and a sealing periphery in contact with the cartridge body (210), wherein the distal end is in contact with the drug and wherein the proximal end of the piston first member (260) includes a proximally facing opening, and b2) a piston second member (270) comprising a material of lower compressibility compared to the first material, the piston second member (270) comprising a sleeve-formed portion arranged in the proximally facing opening of the piston first member (260), wherein the piston second member (270) comprises a proximally facing opening forming a socket； and—；a plug unit (280) coupleable or coupled into the socket of the piston second member (270), wherein the plug unit (280) comprises an electronic sensor unit (290) configured to determine the axial position of the piston (250) within the cartridge body (210) and wherein the plug unit (280) is at least partially received within the proximally facing opening of the piston first member (260).
