A Prospective, Multi-Center Registry, Randomized Trial for Evaluation of Effectiveness of the Blimp Scoring Balloon in Lesions Not Crossable With Conventional Balloon or Microcatheter.

For this study two case situations are being considered.

6.1.1 Case Situation A Guidewire crossed the lesion, micro catheter does not cross

Case situation A is the circumstansis where a physician is using a guidewire in combination with a micro catheter. When in such case the guidewire is crossing at a certain moment of the procedure and the micro catheter not a balloon crossing attempt is one of the current common options as next step.

For the study the physician will go through following steps

1. select alternating in 50% of these cases his current first choice regular balloon (≤ 1.5 (mm) OD) and in the other 50% of cases the Blimp.
2. If first choice regular balloon does not cross select the Blimp and if the Blimp has been first choice select regular first choice balloon.
3. If step 2 is not succesfull take a 6F guide extension and repeat sequence of step 1&2.
4. If step 3 is also not succesfull report how else succeeded (e.g. tonus, balloon rupture, carlino, rotablation, subintimal cross...) or not.