公开(公告)号：US20230338661A1

公开(公告)日：2023-10-26

申请号：US18025698

申请日：2021-09-10

Applicant: NIPRO CORPORATION

Inventor： Ryo OGINO ,  Mitsuru HASEGAWA ,  Yuma SHIRAISHI

IPC: A61M5/28 ,  A61M5/19 ,  A61M5/315

CPC classification number: A61M5/28 ,  A61M5/19 ,  A61M5/31513

Abstract: A pre-filled syringe includes a tubular container, a front end gasket, a rear end gasket, an intermediate gasket, a medicine, a liquid medicine, and a plunger. The tubular container has a barrel and a nozzle portion. The barrel has an inner peripheral surface and a protruding inner side surface. A groove is formed in an outer peripheral surface of the intermediate gasket. The front end gasket has a rear-end pressure-contact portion. The nozzle portion has an accommodation portion. The accommodation portion has a bottom wall, a peripheral wall, and a supporting portion. The rear-end pressure-contact portion is in pressure contact with the inner peripheral surface of the barrel in an abutment state in which the liquid medicine is introduced in the front chamber and the front end portion of the front end gasket is in abutment with the supporting portion.

公开(公告)号：US20230364345A1

公开(公告)日：2023-11-16

申请号：US18025716

申请日：2021-09-10

Applicant: NIPRO CORPORATION

Inventor： Ryo OGINO ,  Mitsuru HASEGAWA

IPC: A61M5/315 ,  A61M5/19

CPC classification number: A61M5/31511 ,  A61M5/19

Abstract: A pre-filled syringe includes a tubular container, a front end gasket, a rear end gasket, an intermediate gasket, and a plunger. The tubular container has an inner peripheral surface, a protruding inner side surface, and a receiving surface. A groove is formed in an outer peripheral surface of the intermediate gasket. The plunger has a connection portion, a pushing portion, and a guide rib. The protruding inner side surface is formed at a position facing the pushing portion in a pushing completion state. The guide rib is provided with a recess. A rear end portion of the recess is located rearward with respect to a rear end portion of the protruding inner side surface in the pushing completion state.