Staple forming features for surgical stapling instrument

  • US 10,092,292 B2
  • Filed: 02/28/2013
  • Issued: 10/09/2018
  • Est. Priority Date: 02/28/2013
  • Status: Active Grant
First Claim
Patent Images

1. An end effector of a surgical instrument, the end effector comprising:

  • (a) a first jaw, wherein the first jaw is configured to receive a staple cartridge; and

    (b) a second jaw, wherein the second jaw is movable relative to the first jaw, wherein the second jaw is configured to provide an anvil for forming staples driven from a staple cartridge received in the first jaw, wherein the anvil comprises;

    (i) a tissue contacting surface, and(ii) a staple forming pocket adjacent to the tissue contacting surface, wherein the staple forming pocket defines a length along a longitudinal axis, wherein the staple forming pocket comprises;

    (A) a first staple forming surface region configured to receive a first staple leg, wherein the first staple forming surface region defines a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall,wherein the first staple forming surface region is laterally defined on a first side by the first, second and third sidewall portions and on a second side by the fourth sidewall portion,wherein the first sidewall of the first staple forming surface region has a shorter length than the second sidewall,wherein the first side of the first staple forming surface region is positioned opposite of the second side of the first staple forming surface region, and(B) a second staple forming surface region configured to receive a second staple leg, wherein the second staple forming surface region defines a first sidewall, a second sidewall, a third sidewall, and a fourth sidewall,wherein the second staple forming surface region is laterally defined on a first side by the first, second and third sidewall portions and on a second side by the fourth sidewall portion,wherein the first sidewall of the second staple forming surface region has a shorter length than the second sidewall,wherein the first side of the second staple forming surface region is positioned opposite of the second side of the second staple forming surface region, and(C) a dividing structure located between the first staple forming surface region and the second staple forming surface region,wherein the third sidewall of the first staple forming surface region and third sidewall of the second staple forming surface region abut one another to thereby define the dividing structure; and

    wherein the first sidewall portion of each of the first and second staple forming surface region has a first length, wherein the second sidewall portion of each of the first and second staple forming surface region has a second length, wherein the third sidewall portion of each of the first and second staple forming surface region has a third length, wherein the fourth sidewall portion of each of the first and second staple forming surface region has a fourth length, wherein the first length is less than the second length, wherein the third length is less than the fourth length.

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