Jaw members and methods of manufacture

Patent metadata

Field	Value
Publication number	US-2016256159-A1
Application number	US-201514639338-A
Country	US
Kind code	A1
Filing date	Mar 5, 2015
Priority date	Mar 5, 2015
Publication date	Sep 8, 2016
Grant date	—

Abstract

An anvil assembly for use with a surgical stapling instrument includes an anvil plate and an anvil cover each being fabricated from a thermoplastic material. The anvil plate includes a first surface and a second surface opposite the first surface. The first surface has a plurality of beads disposed along a periphery thereof. The anvil cover is configured to be coupled to a distal end of the surgical stapling instrument. The anvil cover includes a surface having at least one elongate surface feature disposed along a periphery thereof. The beads of the anvil plate and the elongate surface feature of the anvil cover are configured for abutting engagement upon assembly thereof.

First claim

What is claimed is:

1 . An anvil assembly for use with a surgical stapling instrument comprising:
an anvil plate fabricated from a thermoplastic material and having a knife channel defined longitudinally therethrough, the anvil plate including:
a first surface having a plurality of beads disposed along a periphery thereof; and
a second surface opposite the first surface; and
an anvil cover fabricated from a thermoplastic material and configured to be coupled to a distal end of the surgical stapling instrument, the anvil cover including a surface having at least one elongate surface feature disposed along a periphery thereof, wherein the plurality of beads of the anvil plate and the at least one elongate surface feature of the anvil cover are configured for abutting engagement upon assembly thereof.

2 . The anvil assembly according to claim 1 , wherein at least one bead of the plurality of beads has a triangular configuration.

3 . The anvil assembly according to claim 1 , wherein the at least one elongate surface feature has a triangular transverse cross section configuration.

4 . The anvil assembly according to claim 1 , wherein the thermoplastic material is polyetheretherketone.

5 . The anvil assembly according to claim 1 , wherein an end of the anvil plate and an end of the anvil cover each define an opening therethrough such that upon assembly of the anvil plate with the anvil cover, the openings are in overlapping alignment.

6 . The anvil assembly according to claim 1 , wherein the anvil plate further includes a pair of posts extending perpendicularly from an end of the second surface thereof.

7 . The anvil assembly according to claim 6 , wherein the anvil plate further includes a pair of biasing members engaged to the pair of posts.

8 . The anvil assembly according to claim 1 , wherein the anvil plate further includes a wall extending perpendicularly from the periphery of the first surface of the anvil plate.

9 . The anvil assembly according to claim 1 , wherein the anvil plate has an arcuate configuration.

10 . An end effector for use with a surgical stapling instrument comprising:
an anvil assembly including:
an anvil plate fabricated from a thermoplastic material and having a knife channel defined longitudinally therethrough, the anvil plate including:
a first surface having a plurality of beads disposed along a periphery thereof; and
a second surface opposite the first surface; and

an anvil cover fabricated from a thermoplastic material and configured to be coupled to a distal end of the surgical stapling instrument, the anvil cover including a surface having at least one elongate surface feature disposed along a periphery thereof, wherein the plurality of beads of the anvil plate and the at least one elongate surface feature of the anvil cover are configured for abutting engagement upon assembly thereof; and
a cartridge assembly, wherein at least one of the anvil assembly or the cartridge assembly is movable relative to the other between a spaced position and an approximated position to engage and staple tissue therebetween.

11 . The end effector according to claim 10 , wherein at least one bead of the plurality of beads has a triangular configuration.

12 . The end effector according to claim 10 , wherein the at least one elongate surface feature has a triangular transverse cross section configuration.

13 . The end effector according to claim 10 , wherein the thermoplastic material is polyetheretherketone.

14 . The end effector according to claim 10 , wherein an end of the anvil plate and an end of the anvil cover each define an opening therethrough such that upon assembly of the anvil plate with the anvil cover, the openings are in overlapping alignment.

15 . The end effector according to claim 10 , wherein the anvil plate further includes a pair of posts extending perpendicularly from an end of the second surface thereof.

16 . The end effector according to claim 15 , wherein the anvil plate further includes a pair of biasing members engaged to the pair of posts.

17 . The end effector according to claim 10 , wherein the anvil plate further includes a wall extending perpendicularly from the periphery of the first surface of the anvil plate.

18 . The end effector according to claim 10 , wherein the anvil assembly and the cartridge assembly have an arcuate configuration.

19 . A method of manufacturing an anvil assembly of a surgical stapling instrument, the method comprising:
providing an anvil plate fabricated from a thermoplastic material and having a knife channel defined longitudinally therethrough, the anvil plate including:
a first surface having a plurality of beads disposed along a periphery thereof; and
a second surface opposite the first surface;
providing an anvil cover fabricated from a thermoplastic material and configured to be coupled to a distal end of a surgical stapling instrument, the anvil cover including a surface having at least one elongate surface feature disposed along a periphery thereof; and ultrasonically welding the anvil plate to the anvil cover at an interface between the plurality of beads of the anvil plate and the at least one elongate surface feature of the anvil cover.

20 . The method according to claim 19 , further comprising aligning an opening defined in an end of the anvil plate with an opening defining in an end of the anvil cover prior to ultrasonically welding the anvil plate to the anvil cover.

Assignees

• Covidien Lp

Inventors

• Pinjala Venkata Ramana Mohan
• Nukala Rajasekhar

Classifications

• A61B2017/07278

  characterised by its sled or its staple holder · CPC title

• A61B17/29

  Forceps for use in minimally invasive surgery · CPC title

• A61B2017/07221

  curved · CPC title

• A61B2017/00964

  composite · CPC title

• A61B2017/07257

  characterised by its anvil · CPC title