Connector for containers containing a medicinal active substance

A connector for containers containing a medicinal active substance, comprising

• a first connection region for connecting a first container,
• a piercing element and a break-open element,
• wherein the piercing element has a first end section and a second end section and a channel, running from the first end section to the second end section, for transporting the medicinal active substance,
• wherein the first end section is formed for piercing a membrane of a first container connected in the first connection region, and, at the second end section, the break-open element is attached such that it can be broken open via a connection area, and
• wherein, in the attached state, the break-open element seals the channel of the piercing element in liquid-tight fashion, and
• a connection with a manually elastically deformable bending section, wherein the connection surrounds the second end section and the break-open element is at least partly situated in the bending section such that the break-open element can be broken open as a result of a deformation of the bending section, the bending section including two stiffening webs positioned in the bending section, wherein the two stiffening webs provide a stiffening of the connection in the bending section and define a snapping direction of the bending section
• wherein the two stiffening webs lie in a plane and the snapping direction is transverse to the plane.