摘要：

A one-piece syringe (2) includes an elongate frame (4) having front and back parts (6, 8) coupled by a hinge (10). A hollow barrel (12) extends from the front part and away from an outer surface (22). Plunger 14 has a pair of main bore gaskets 54 and an entrance bore gasket 56 at an outer end 32. Entrance bore gasket 56 is sized to matingly engage an entrance bore portion 52 while main bore gaskets 54 are sized to matingly engage a main bore portion 58 of bore 40. Main bore portion 58 has a smaller diameter than entrance bore portion 52. Sizing the gaskets in this manner permits syringe 2 to be shipped filled with an injectant 60 while keeping main bore gaskets from compression set during storage.

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