Syringe apparatus for stirring and delivering composition containing cells

A syringe apparatus comprising:

• a syringe barrel having an axial direction;
• a plunger detachably disposed within the syringe barrel and being movable within the syringe barrel along the axial direction of the syringe barrel, the plunger including:
• a plunger body received in the syringe barrel;
• an end panel disposed at a proximal end of the plunger and protruding from the syringe barrel;
• a guiding element disposed on the plunger body;
• and
• a corresponding actuable mechanism disposed on the end panel and having a corresponding locking part;
• a stirring paddle detachably disposed within the plunger body with the plunger being movable relative to the stirring paddle along the axial direction of the syringe barrel;
• and
• a connecting member detachably disposed within the plunger body and detachably connected between a proximal end of the stirring paddle and the end panel of the plunger,
• wherein the connecting member is an actuable mechanism having a locking part and is disposed on the proximal end of the stirring paddle,
• wherein the stirring paddle is configured to move along the axial direction of the syringe barrel by the connecting member in slidable contact with the guiding element, and the stirring paddle is free of moving relative to the plunger when the locking part of the actuable mechanism engages the corresponding locking part of the corresponding actuable mechanism,
• wherein the plunger includes a plunger head with an opening, the syringe apparatus further comprises a piston detachably engaging the plunger head, and the piston includes a through hole corresponding to and communicating with the opening for the stirring paddle to project therethrough, and
• wherein the piston includes a plurality of scrapers disposed around the through hole, and the scrapers are in contact with the stirring paddle and configured to seal a gap between the stirring paddle and the piston.