Percutaneous vascular introduction device for the feeding of an extracorporeal blood circuit

Claim 1

An arterial vascular introduction device for the introduction of a catheter into a patient's vascular system comprising: an elongated tubular body having open proximal and distal ends, said elongated tubular body having an inner wall defining a catheter introduction channel extending between said open proximal end and said open distal end; a lateral arm integral with the tubular body between the tubular body proximal and distal ends at a position proximate said proximal end, said lateral arm having a lumen therethrough in fluid communication with said catheter introduction channel; a non-return valve positioned at the open proximal end of said elongated tubular body for permitting the introduction of a catheter therethrough and for preventing the flow of blood from the tubular body proximal end before introduction of the catheter, wherein the wall of the elongated tubular body further comprises a longitudinal bulge extending parallel to a longitudinal axis of the tubular body; said wall exhibiting in a cross section through the bulge an ovoid shape and defining inside the bulge a longitudinal cavity merged along the length of the longitudinal bulge with the catheter introduction channel and communicating directly with the lumen of the lateral arm, and blood inlet orifices being arranged in said cavity, wherein the sum of the areas of the orifices is at least equal to the area of a distal end opening of said introduction device so as to permit, when the catheter extends through the entire length of the device and occupies the catheter introduction channel, a simultaneous exiting of a required quantity of blood for feeding, without aspiration, an extracorporeal blood circuit.