A bottle connector for use in a medical fluid transfer arrangement, said bottle connector having an axial direction and a radial direction and comprising:
- a first generally cylindrical part having a first end a second end, said first generally cylindrical part comprising a hollow piercing member comprising an inner channel, said hollow piercing member defining a length and extending in said axial direction from an interior portion of said first generally cylindrical part beyond said second end of said first generally cylindrical part;
- and
- a second generally cylindrical part having a first end and a second end, said second generally cylindrical part comprising a bottle coupling member, for coupling said bottle connector to a medical bottle,
- wherein said first and second generally cylindrical parts are connected and concentrically arranged with respect to each other, such that when said second part is coupled to said medical bottle said piercing member is aligned in an axial direction of said medical bottle with a sealing member of said medical bottle, and the generally cylindrical second part is releasably locked to the first generally cylindrical part and transitionable between a transport configuration and a fluid transfer configuration,
- wherein when said bottle connector is in the transport configuration, said bottle connector defines a length between said first end of said first generally cylindrical part and said second end of said second generally cylindrical part, wherein said length is greater than said length of said hollow piercing member so that the hollow piercing member protrudes past the second end of the first generally cylindrical part and so that the second generally cylindrical part completely shields said hollow piercing member, and when said bottle connector is in the fluid transfer configuration, at least a portion of said hollow piercing member extends beyond said second end of said first generally cylindrical part, and wherein the first and second generally cylindrical parts are configured to telescope with respect to each other when transitioning from the transport configuration to the transfer configuration other without rotation between them, wherein the second generally cylindrical part is configured to move from an unlocked configuration corresponding to the first and second generally cylindrical parts not being locked together, to the transport configuration, and wherein, when the second generally cylindrical part moves from the unlocked configuration to the transport configuration, the second generally cylindrical part moves along a longitudinal axis without rotation.