Surgical apparatus including surgical buttress

• US 9,295,466 B2
• Filed: 11/30/2012
• Issued: 03/29/2016
• Est. Priority Date: 11/30/2012
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Hodgkinson, Gerald N., Prior, Scott J.
• Primary Examiner(s): Desai, Hemant M
• Assistant Examiner(s): Neacsu, Valentin
• Application Number:
  US13/690,362
• Publication Number:
  US 20140151431A1
• Time in Patent Office: 1,215 Days
• Field of Search: 2271751-1821
• US Class Current: 1/1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/3209 Incision instruments
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge

Abstract

A surgical stapling apparatus includes a housing and an end effector secured to the housing. The housing supports a knife assembly including a knife. The end effector has first and second jaw members. One or both of the first and second jaw members define a knife channel. The first jaw member defines fastener slots and the second jaw member defines fastener pockets. One or more of the knife channel, the fastener slots, and the fastener pockets includes lateral recesses. Fasteners are disposed in the fastener slots and formed by the fastener pockets. One or more surgical buttresses have a body that overlies one or both of the fastener slots and the fastener pockets. Portions of the body of the one or more surgical buttresses are disposed within the lateral recesses to secure the one or more surgical buttresses to one or both of the first jaw member and the second jaw member.

Claims

1. A surgical stapling apparatus, comprising:

an end effector having first and second jaw member assemblies, at least one of the first and second jaw member assemblies defining a knife channel for the passage of a knife therethrough, the knife channel including a plurality of lateral recesses extending therefrom, wherein the first jaw member assembly defines a plurality of fastener retaining slots, the second jaw member assembly defining a plurality of fastener forming pockets;

a plurality of fasteners disposed in the fastener retaining slots of the first jaw member assembly and being configured to be deformed by the fastener forming pockets of the second jaw member assembly; and

at least one surgical buttress having a body configured to substantially overlie at least one of the fastener retaining slots of the first jaw member assembly, at least some of the fastener forming pockets of the second jaw member assembly, or both;

wherein portions of the body of the at least one surgical buttress are disposed within the plurality of lateral recesses of the knife channel to secure the at least one surgical buttress to at least one of the first jaw member assembly and the second jaw member assembly, each lateral recess of the knife channel is defined by a plurality of walls, wherein at least two of the plurality of walls of at least one of the lateral recesses taper in opposing directions relative to one another from a buttress receiving end of the respective lateral recess to form a flared configuration, whereby the flared configuration increases retention of a flared plug of the body of the at least one surgical buttress within the respective lateral recess.

2. The surgical stapling apparatus of claim 1, wherein the at least one surgical buttress is a non-woven material.

3. The surgical stapling apparatus of claim 1, wherein a second plurality of lateral recesses extends from at least one of the fastener retaining slots of the first jaw member assembly, the fastener forming pockets of the second jaw member assembly, or both;

wherein portions of the body of the at least one surgical buttress are disposed within the second plurality of lateral recesses to secure the at least one surgical buttress to at least one of first jaw member assembly and the second jaw member assembly.

4. The surgical stapling apparatus of claim 1, wherein each lateral recess extends substantially orthogonally to a longitudinal axis defined through the end effector.

5. The surgical stapling apparatus of claim 1, wherein portions of the body of the at least one surgical buttress are heat pressed into the lateral recesses.

6. The surgical stapling apparatus of claim 1, wherein the at least one surgical buttress is made from a material selected from a group comprising glycolide, caprolactone, trimethylene carbonate, lactide and combinations thereof.

7. An end effector for a surgical stapling apparatus, comprising:

a first jaw member assembly defining fastener retaining slots;

a second jaw member assembly defining fastener forming pockets;

fasteners disposed in the fastener retaining slots of the first jaw member assembly and being configured to be formed by the fastener forming pockets of the second jaw member assembly;

at least one lateral recess extending from at least one of the fastener retaining slots of the first jaw member assembly, at least one of the fastener forming pockets of the second jaw member assembly, or both;

and

at least one surgical buttress having a body configured to substantially overlie at least one of the fastener retaining slots of the first jaw member assembly, at least one of the fastener forming pockets of the second jaw member assembly, or both;

a portion of the body of the at least one surgical buttress being disposed within the at least one lateral recess to secure the at least one surgical buttress to at least one of the first jaw member assembly and the second jaw member assembly;

wherein at least one of the first and second jaw member assemblies defines a knife channel therethrough, the knife channel including at least one lateral recess extending therefrom for the reception of a portion of the at least one surgical buttress, each lateral recess is defined by a plurality of walls, wherein at least two of the plurality of walls of at least one of the lateral recesses taper in opposing directions relative to one another from a buttress receiving end of the respective lateral recess to form a flared configuration, whereby the flared configuration increases retention of a flared plug of the body of the at least one surgical buttress within the respective lateral recess.

8. The end effector of claim 7, wherein the at least one surgical buttress is a non-woven material.

9. The end effector of claim 7, wherein at least one of the lateral recesses extends substantially orthogonally to a longitudinal axis defined through the end effector.

10. The end effector of claim 7, wherein portions of the body of the at least one surgical buttress are heat pressed into at least one of the lateral recesses.

11. The end effector of claim 7, wherein the at least one surgical buttress is made from a material selected from a group comprising glycolide, caprolactone, trimethylene carbonate, lactide and combinations thereof.