Patent ID: 8795300

Claim:
An anastomotic device ( 10 ) comprising: a first ring ( 20 ) having a first contact surface ( 21 ); and a second ring ( 30 ) having a second contact surface ( 31 ); said first and second rings ( 20 , 30 ) being suitable to be approached to each other in an axial direction of an axis (X) such as to move said contact surfaces ( 21 , 31 ) towards each other; coupling means adapted to couple the first and second rings ( 20 , 30 ) to each other for said first and second contact surfaces ( 21 , 31 ) to clamp tissue walls intended to be anastomosed, wherein said contact surfaces ( 21 , 31 ) extend radially to said axis (X) from inner edges ( 22 , 32 ) to outer edges ( 21 , 31 ), said outer edges ( 21 , 31 ) forming radially outer free edges of said first and second rings ( 20 , 30 ), wherein said contact surfaces ( 21 , 31 ) have a circumferentially undulated shape relative to a plane (π) perpendicular to the axis (X) of said first and second rings ( 20 , 30 ), said circumferentially undulated shape extending throughout the entirety of said contact surfaces ( 21 , 31 ) including said inner edges ( 22 , 32 ) and outer edges ( 21 , 31 ), and said coupling means being arranged radially inside the outer edges ( 21 , 31 ), in which, when the first and second rings ( 20 , 30 ) are coupled to each other, the first and second contact surfaces ( 21 , 31 ) define a spacing therebetween which increases radially from a minimum axial spacing between inner edges ( 22 , 32 ) to a maximum axial spacing between outer edges of said contact surfaces ( 21 , 31 ) in a radial cross-section with respect to the axis (X).