Patent ID: 7422138
Filing Date: 2008-09-09
Classification: A61B

Abstract:
1. An elliptical surgical stapler for cutting a ring obliquely oriented relative to a longitudinal axis of a lumen, comprising: a head in which a plurality of staples are stored, the head including an annular facing surface; an anvil coupled to the head including an anvil surface shaped and dimensioned for forming the staples upon actuation of the surgical stapler, the anvil including an annular facing surface opposed to the annular facing surface of the head for mating engagement therewith, and upon mating engagement the annular facing surface of the anvil and the annular facing surface of the head define a mating plane; the annular facing surface of the anvil includes a stepped configuration composed of a series of lands and risers alternately extending about the circumference of the annular facing surface of the anvil to define a proximal most section along the circumference of the annular facing surface of the anvil which is diametrically opposed to a distal most section with the lands and risers extending about the circumference to link the proximal most section to the distal most section in a manner orienting the annular facing surface of the anvil in a plane obliquely oriented relative to a longitudinal axis of the surgical stapler and the annular facing surface of the head includes a stepped configuration composed of a series of lands and risers extending about the annular facing surface of the head to define a distal most section along the circumference of the annular facing surface of the head which is diametrically opposed to a proximal most section with the lands and risers extending about the circumference to link the distal most section to the proximal most section in a manner orienting the annular facing surface of the head in a plane obliquely oriented relative to a longitudinal axis of the surgical stapler; and wherein the mating plane is obliquely oriented relative to a longitudinal axis of the head creating an elliptical staple line when the head is brought into contact with the anvil during actuation of the surgical stapler.