Surgical Stapling Device

Abstract

A surgical stapling device is disclosed for the treatment of internal hemorrhoids. The surgical stapling device includes a handle portion, an elongated body portion and a head portion including an anvil assembly and a shell assembly. The head portion includes an anvil assembly including a tiltable anvil which will tilt automatically after the device has been fired and unapproximated. The tiltable anvil provides a reduced anvil profile to reduce trauma during removal of the device after the anastomoses procedure has been performed. The anvil assembly of the stapling device may include an approximation mechanism having an anvil retainer including an elongated distal extension dimensioned to be telescopingly received within a longitudinal bore of an anvil center rod of the anvil assembly. The elongated distal extension is of a length to provide telescopic engagement with the anvil center rod without obstructing visualization of the surgical site. A kit including a surgical instrument having a removable anvil assembly and an anvil assembly insertion handle is also disclosed. The kit may also include a speculum, an anal dialator and/or an obturator.

1 . A surgical stapling device comprising:
 a handle assembly;   a body portion extending distally from the handle assembly;   a head portion including an anvil assembly and a shell assembly, the anvil assembly including an anvil head and an anvil center rod defining a longitudinal bore, the shell assembly supporting a plurality of staples, the anvil assembly being movable in relation to the shell assembly between spaced and approximated positions;   an approximation mechanism including an anvil retainer for supporting the anvil assembly, the anvil retainer including an elongated distal extension dimensioned to be telescopingly received in the longitudinal bore of the anvil center rod.