A syringe cap for use with a pressure jacket, the syringe cap comprising: a syringe cap body having a proximal end, a distal end, and a circumferential sidewall extending between the proximal end and the distal end along a syringe cap longitudinal axis; characterized in that the syringe cap body comprises at least one connector assembly comprising: at least one resiliently deflectable retaining member having a first segment attached to an inner surface at the proximal end of the syringe cap body and a second segment protruding from the first segment toward the distal end of the syringe cap body and deflectable relative to the first segment; and at least one actuation member associated with the at least one resiliently deflectable retaining member, wherein the at least one actuation member comprises at least one cam member provided on a surface of the at least one resiliently deflectable retaining member, wherein the second segment of the at least one resiliently deflectable retaining member includes at least one catch for interacting with a radial lip of an attachment interface of the pressure jacket, and wherein at least one cam member of the at least one actuation member interacts with the pressure jacket when the syringe cap is connected to the pressure jacket to deflect the at least one resiliently deflectable retaining member upon rotation of the syringe cap relative to the pressure jacket during disengagement of the syringe cap from the pressure jacket. a syringe cap body having a proximal end, a distal end, and a circumferential sidewall extending between the proximal end and the distal end along a syringe cap longitudinal axis; characterized in that the syringe cap body comprises at least one connector assembly comprising: at least one resiliently deflectable retaining member having a first segment attached to an inner surface at the proximal end of the syringe cap body and a second segment protruding from the first segment toward the distal end of the syringe cap body and deflectable relative to the first segment; and at least one actuation member associated with the at least one resiliently deflectable retaining member, wherein the at least one actuation member comprises at least one cam member provided on a surface of the at least one resiliently deflectable retaining member, wherein the second segment of the at least one resiliently deflectable retaining member includes at least one catch for interacting with a radial lip of an attachment interface of the pressure jacket, and wherein at least one cam member of the at least one actuation member interacts with the pressure jacket when the syringe cap is connected to the pressure jacket to deflect the at least one resiliently deflectable retaining member upon rotation of the syringe cap relative to the pressure jacket during disengagement of the syringe cap from the pressure jacket. at least one resiliently deflectable retaining member having a first segment attached to an inner surface at the proximal end of the syringe cap body and a second segment protruding from the first segment toward the distal end of the syringe cap body and deflectable relative to the first segment; and at least one actuation member associated with the at least one resiliently deflectable retaining member, wherein the at least one actuation member comprises at least one cam member provided on a surface of the at least one resiliently deflectable retaining member, wherein the second segment of the at least one resiliently deflectable retaining member includes at least one catch for interacting with a radial lip of an attachment interface of the pressure jacket, and wherein at least one cam member of the at least one actuation member interacts with the pressure jacket when the syringe cap is connected to the pressure jacket to deflect the at least one resiliently deflectable retaining member upon rotation of the syringe cap relative to the pressure jacket during disengagement of the syringe cap from the pressure jacket.