Circular anastomosis device

A surgical instrument for applying at least one circular array of fasteners, comprising:

• a body portion;
• a fastener head portion connected to said body portion and including a plurality of fasteners;
• an elongated member longitudinally disposed within said body portion;
• at least one movable lever member operatively associated with said body portion to fire said fasteners;
• an anvil assembly, including an anvil head portion and an anvil shaft portion operatively associated with said elongated member such that movement of said elongated member from a first position to a second position imparts movement of said anvil assembly relative to said fastener head portion, said anvil head portion adapted to form said plurality of fasteners;
• and
• a lockout member movable between at least a first position and a second position wherein when said lockout member is disposed in said first position said elongated member is permitted to move longitudinally within said body portion and when said lockout member is disposed in said second position said elongated member is held in a fixed position and said anvil head portion is held at a predetermined fixed longitudinal distance from said fastener head portion.

A surgical instrument for applying at least one circular array of fasteners, comprising:

• a body portion including a proximal end and a distal end, the body portion having a handle section at the proximal end and an elongated housing section extending from the distal end;
• a fastener head portion connected to said body portion and including a plurality of fasteners;
• at least one movable lever member associated with said handle section and operatively connected to said fastener head portion;
• an elongated U-shaped member forming an open sided channel section along a portion thereof, the elongated U-shaped member extending from said handle section and at least partially through said elongated housing section and having at least two finger portions extending from a distal end thereof, said U-shaped member being movable between a first position and a second position;
• an anvil member attached to said at least two finger portions of said elongated U-shaped member, said anvil member being adapted for forming said plurality of fasteners.

A surgical instrument for applying at least one circular array of fasteners, comprising:

• a body portion including a handle section at a proximal end thereof;
• a fastener head portion connected to said body portion, said fastener head portion configured and dimensioned to apply at least one circular array of fasteners;
• at least one movable lever member operatively associated with said handle section;
• an elongated U-shaped compression member having a major and minor axis forming a channel section having a laterally directed open side along the major axis, the compression member being operatively connected at a proximal end to said at least one movable lever member, the compression member being further operatively connected at a distal end to said fastener head portion;
• and
• an elongated U-shaped tension member which extends from said handle section to a distal portion of said body portion and is slidably disposed adjacent said compression member.

A surgical instrument for applying at least one circular array of fasteners, comprising:

• a body portion;
• a fastener head portion connected to said body portion and including a plurality of fasteners;
• an elongate member disposed within said body portion;
• an actuator operatively associated with said body portion to fire said plurality of fasteners;
• an anvil, including a head portion and a shaft portion, said anvil being operatively connected to said elongate member such that movement of said elongated member from a first position to a second position imparts movement of said anvil relative to said fastener head portion;
• and
• a lockout member operatively associated with said anvil and movable between at least a first position and a second position, wherein when said lockout member is disposed in said first position said elongate member is permitted to move longitudinally within said body portion and when said lockout member is disposed in said second position said elongate member is restricted from operative longitudinal movement within said body portion.