Rotary stitching device

A suturing device comprising:

• an elongate body assembly defining a longitudinal axis and including a stationary cam and a rotary cam, the stationary cam defining a first cam slot and the rotary cam defining a second cam slot, the rotary cam including a stepped distal portion defining an annular shoulder between a distal step and an intermediate step positioned proximally of the distal step, the second cam slot being formed on the intermediate step, the rotary cam being rotatable in relation to the stationary cam;
• an end effector including a first jaw member and a second jaw member, the first and second jaw members including a distal portion and a proximal portion, the proximal portion of each of the first and second jaw members being rotatably supported about the distal step of the rotary cam and defining a proximally facing shoulder, the proximally facing shoulders of the first and second jaw members being engaged with the annular shoulder of the rotary cam, the first jaw member supporting a first pin and the second jaw member supporting a second pin, the first and second pins received within the first and second cam slots, wherein the first and second cam slots are configured to releasably secure one of the first or second jaw members to the rotary cam such that the first and second jaw members rotate about the stationary cam in alternating fashion, wherein during each revolution of the rotary cam, the one of the first or second jaw members rotates with the rotary cam for a substantially full revolution while the other of the first or second jaw members remains stationary;
• and
• a suture needle movable between the first and second jaw members and securable to and movable with the one of the first or second jaw members.

A suturing device comprising:

• an elongate body assembly defining a longitudinal axis and including a stationary cam and a rotary cam, the stationary cam defining a first cam slot and the rotary cam defining a second cam slot, the rotary cam including a stepped distal portion defining an annular shoulder between a distal step and an intermediate step positioned proximally of the distal step, the second cam slot being formed on the intermediate step, the rotary cam being rotatable in relation to the stationary cam;
• an end effector including a first jaw member and a second jaw member, the first and second jaw members including a distal portion and a proximal portion, the proximal portion of each of the first and second jaw members defining a proximally facing shoulder, the proximally facing shoulders of the first and second jaw members being engaged with the annular shoulder of the rotary cam, the first jaw member supporting a first pin and the second jaw member supporting a second pin, the first and second pins received within the first and second cam slots, wherein the first and second cam slots are configured to releasably secure one of the first or second jaw members to the rotary cam such that the first and second jaw members rotate about the stationary cam in alternating fashion, wherein during each revolution of the rotary cam, the one of the first or second jaw members rotates with the rotary cam for a substantially full revolution while the other of the first or second jaw members remains stationary;
• a suture needle movable between the first and second jaw members and securable to and movable with the one of the first or second jaw members;
• and
• first and second blades;
• wherein each of the first and second jaw members defines a longitudinally extending channel, the first blade received within the longitudinally extending channel of the first jaw member and the second blade received within the longitudinally extending channel of the second jaw member, the first and second blades movable between retracted and advanced positions to secure the suture needle to a respective one of the first and second jaw members.