+ Improves flow and compliance

+ Prevents kinking

+ Supports better patency

+ Reusable

These unique vascular punches* with their totally new assymetric triangular blade design (patent pending), shaped like a ellipsoidal circular segment, have been specially designed for the anastomotic connection of vessels of different lumen sizes.

The special shape results from clinical pitfalls and fluid- technical considerations and optimizes the flow of blood while also preventing kinking by a better adaption of the conduits. Not only the flow behavior shows improvements due to the improved conditions in the passage area between the sutured blood vessels. It is also assumed, that the compliance of the connected conduits can be improved and better long-term patency rates can be achieved in vascular surgery operations through the flatter mount of the vascular graft on the target vessel, which improves the hemodynamic properties and avoids flow turbulences when the blood passes. It also can be found that the opening made with this new triangular punch (right side) stays open wider and larger than one made with a circular punch (left side) due the behaviourof the muscle fibers inside the vessels walls.

The oval base fixes first the angulations of the conduit's heel ensuring adopting the expected graft course over the aorta. To avoid purse-string effects on the anastomosis, the running suture is begun with a U-stitch at the conduit's heel.6mm model permits performing of bifid arterial anasto- mosis (or SVGs). By turning the punch 180° and making a second cut, a rectangular opening can be created for attaching two conduits onto the same target vessel.

*developed in cooperation with Dr. Mathias Aazami,

Universitätsklinikum des Saarlandes, Homburg/ Saar,

Germany and Dr. Faranak Kargar, RHC, Tehran, Iran