And what is about a contraindications,thus their into vessel surgeries are less,than in opening surgeries.

 As patients on adult age,as they are having problem veins as very hard with a trophical destroys are much an other hard diseases/osteochondrosis, hernias intervertebral , heart diseases, endured stroke are not allowing using a hard anaesthesia ,thus and here as into vessel surgeries with a local anaesthesia is help and this age category. As contraindications are lots in opening surgeries, so as into vessel surgeries are success processing having as in different pathologies and in most different age groups as in low injury and faster doing. As if an opening surgery are 2 hours having,thus into vessel are 20 min. As a still moment for complication as if both to check, thus a frequently for complications after a first are less ,than a second ,and why?As a cut not having and blood loosing .But which are risks in opening surgeries? As infection entering in wound, and into vessel is not possible,as all manipulations doing with needle through a point skin cut.