A fluid container for a medical fluid dispensing device, comprises a rigid body (3) for delimiting with the inside part of its wall a volume of the medical fluid, and a membrane (5) that covers at least an opening of the rigid body thereby creating a fluid tight lid, the opening corresponding to a measurement area, and the membrane further covers a portion of an outside part of the rigid body's wall. The membrane comprises a flexible measurement part (11) corresponding to the opening of the rigid body, an attachment part (13) that is fixed to the rigid body, and a second part (12) that connects the flexible measurement part to the attachment part, and which comprises a rigid part (14), an upper part of which is connected to the flexible measurement part, and the rigid part further comprising a sealing surface (18), and a deformable part (15) which connects the rigid part to the attachment part. The fluid container further comprises a first gap (17) located between the rigid part and the rigid body, which is dimensioned to receive at least a part of the rigid part in a case when a force is applied onto the sealing surface and causes the deformable part to deform.Un recipiente de fluido para un dispositivo surtidor de fluidos médicos, comprende un cuerpo rígido para delimitar con la parte interna de su pared un volumen del fluido médico, y una membrana que cubre por lo menos una abertura del cuerpo rígido creando de esta manera una tapa hermética a fluidos, la abertura corresponde a un área de medición, y la membrana cubre además una porción de una parte externa de la pared del cuerpo rígido. La membrana comprende una parte de medición flexible que corresponde a la abertura del cuerpo rígido, una parte de unión que está fijada al cuerpo rígido, y una segunda parte que conecta la parte de medición flexible a la parte de unión, y que comprende una parte rígida, una parte superior la cual se conecta a la parte de medición flexible, y la parte rígida comprende además una
