Puncture aid with protection against reuse

A puncture aid, comprising:

• a housing having a support surface;
• a lancet holder movably mounted in the housing and including a bearing element which rests on the support surface when the lancet holder is in a first position;
• a trigger, movement of which causes the bearing element and the support surface to move relative to one another and the lancet holder to move to a second position in which the bearing element falls from the support surface;
• a spring in engagement with the lancet holder and being tensioned prior to the lancet holder moving to the second position, the spring at least partially relaxing when the lancet holder moves to the second position and thereby moving the lancet holder in a puncturing direction;
• and
• a blocking element configured to prevent a return movement of the lancet holder to the first position or a renewed movement of the lancet holder from the first position to the second position, whereby reuse of the puncture aid is prevented.

A puncture aid, comprising:

• a housing defining a support surface;
• a lancet holder movably mounted in the housing and having a bearing element that rests on the support surface when the lancet holder is in a first position;
• a spring engaging the lancet holder;
• the lancet holder being rotatable relative to the housing from the first position to a second position in which the bearing member is removed from the support surface, whereupon the spring advances the lancet holder in a puncturing direction;
• and
• a blocking element configured to prevent the lancet holder from returning to the first position, whereby reuse of the puncture aid is prevented.