Device for microanatomosis of blood vessels

Claim 1

A device for microanastomosis of blood vessels comprising: a housing including a sleeve (1) having two oppositely disposed open ends; a drive plate (13) slidable within said sleeve (1) and supporting an axle (50); a pair of retractable, movable arms (3) supported and articulated on said axle (50) and each said arm having one end extending outside of said sleeve (1) through one of said two oppositely disposed open ends; a rod (14) operatively coupled with said plate (13), and a gripper coupled with one end of said rod (14), each of said movable arms (3) having, at a front end thereof, a socket (42) for grasping and holding a staple (4) between said movable arms in each said socket, one end of said rod being positioned at a rear portion of said housing opposite to said one of said oppositely disposed ends for movement of said plate (13), and extending outside of said sleeve (1) through the other of said oppositely disposed open ends opposite to said one open end and axially aligned therewith; a removable magazine (32) receivable within said sleeve (1) and supported on said plate (13) for storing staples prior to their being grasped by said sockets (42); means for effecting a grasping of said staple (4) including means for moving said rod (14) in a first direction out of said sleeve (1) through said other of said oppositely disposed open ends, and moving each said socket (42) to a position facing the staple (4) in said removable magazine (32) and movement of said rod (14) includes means for displacement of each of said arms (3) for movement of said arms (3) apart from each other to move each said socket (42) into position to face the staple (4); said means for moving said rod (14) including means for displacement of said rod (14) in a second direction opposite to said first direction for movement of said rod (14) into said sleeve (1) towards said one open end to move each said socket (42) by movement of the arms (3) into a work position for crimping said staple (4) onto a blood vessel; means including a finger operated lever (16) external of said sleeve (1) for moving said arms towards each other for effecting a preset movement of said arms (3) together by moving said arms towards each other to effect a crimping of the staple responsive to ends of the arms (3) being moved together towards each other; a displaceable sliding member (17) internal of said sleeve (1) acting on an inner articulated lever (18), an inner cam member (47) supported on said displaceable sliding member (17), said inner articulated lever (18) being rotatable and operatively associated with said displaceable sliding member (17) for the displacement of said sliding member (17), said inner cam member (47) having a pair of outer cam faces (46), a pair of outer cam members (147) each having an inner cam face (48) cooperating with one of said outer cam faces (46) each said arm (3) having pivots (45) integral therewith and fixed in position between one of said outer cam faces (46) provided on said inner cam member (47), and one of said inner cam faces (48) and one of said outer cam members (147) having shaped lateral faces (48) thereon; said inner cam member (47) having inclined planes (47a) for producing a relative movement (49) relative to each said pivot (45) of each said arm (3) for causing said pivots (45) to move apart initially during an initial phase of displacement and each said front end of each of said arms (3) being provided with said socket (42) to move together for crimping of the staple, and after the staple has been crimped, said arms (3) move apart for release of the staple (4) from each said socket (42) and allow each said socket (42) to be withdrawn and to accept a new staple.

Claim 2

A device for microanastomosis of blood vessels comprising: a housing including a sleeve (1) having two oppositely disposed open ends; a drive plate (13) slidable within said sleeve (1) and supporting an axle (50); a pair of retractable, movable arms (3) supported and articulated on said axle (50) and each said arm having one end extending outside of said sleeve (1) through one of said two oppositely disposed open ends; a rod (14) operatively coupled with said plate (13), and a gripper coupled with one end of said rod (14), each of said movable arms (3) having, at a front end thereof, a socket (42) for grasping and holding a staple (4) between said movable arms in each said socket, one end of said rod being positioned at a rear portion of said housing opposite to said one of said oppositely disposed ends for movement of said plate (13), and extending outside of said sleeve (1) through the other of said oppositely disposed open ends opposite to said one open end and axially aligned therewith; a removable magazine (32) receivable within said sleeve (1) and supported on said plate (13) for storing staples prior to their being grasped by said sockets (42); means for effecting a grasping of said staple (4) including means for moving said rod (14) in a first direction out of said sleeve (1) through said other of said oppositely disposed open ends, and moving each said socket (42) to a position facing the staple (4) in said removable magazine (32) and movement of said rod (14) includes means for displacement of each of said arms (3) for movement of said arms (3) apart from each other to move each said socket (42) into position to face the staple (4); said means for moving said rod (14) including means for displacement of said rod (14) in a second direction opposite to said first direction for movement of said rod (14) into said sleeve (1) towards said one open end to move each said socket (42) by movement of the arms (3) into a work position for crimping said staple (4) onto a blood vessel; means including a finger operated lever (16) external of said sleeve (1) for moving said arms towards each other for effecting a preset movement of said arms (3) together by moving said arms towards each other to effect a crimping of the staple responsive to ends of the arms (3) being moved together towards each other; a displaceable sliding member (17) internal of said sleeve (1) acting on an inner articulated lever (18), an inner cam member (47) supported on said displaceable sliding member (17), said inner articulated lever (18) being rotatable and operatively associated with said displaceable sliding member (17) for the displacement of said sliding member (17), said inner cam member (47) having a pair of outer cam faces (46), a pair of outer cam members (147) each having an inner cam face (48) cooperating with one of said outer cam faces (46) each said arm (3) having pivots (45) integral therewith and fixed in position between one of said outer cam faces (46) provided on said inner cam member (47), and one of said inner cam faces (48) and one of said outer cam members (147) having shaped lateral faces (48) thereon; said inner cam member (47) having inclined planes (47a) for producing a relative movement (49) relative to each said pivot (45) of each said arm (3) for causing said pivots (45) to move apart initially during an initial phase of displacement and each said front end of each of said arms (3) being provided with said socket (42) to move together for crimping of the staple, and after the staple has been crimped, said arms (3) move apart for release of the staple (4) from each said socket (42) and allow each said socket (42) to be withdrawn and to accept a new staple.