Surgical apparatus including surgical buttress

• US 8,348,130 B2
• Filed: 12/10/2010
• Issued: 01/08/2013
• Est. Priority Date: 12/10/2010
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Shah, Sachin, Simpson, Richard
• Primary Examiner(s): Rada, Rinaldi
• Assistant Examiner(s): Chukwurah, Nathaniel
• Application Number:
  US12/964,916
• Publication Number:
  US 20120145767A1
• Time in Patent Office: 760 Days
• Field of Search: 227/19, 227/176.1, 227/179.1, 227/180.1, 606/151, 606/215
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00951 adhesive
• CPC Class Codes: A61B 2017/07214 Stapler heads

Abstract

A surgical buttress for use with a surgical stapling apparatus having a first jaw in the form of an anvil assembly and a second jaw configured to selectively receive a staple cartridge assembly. The surgical buttress includes a first body portion and a second body portion. The first body portion substantially overlies a portion of a plurality of fastener slots of the staple cartridge assembly. The staple cartridge assembly is removably operably couplable to the second jaw of the surgical stapling apparatus. The second body portion extends from the first body portion and is configured and dimensioned to be removably positioned to substantially overlie a portion of a plurality of fastener pockets of the anvil assembly of the surgical stapling apparatus when the staple cartridge assembly is operably coupled to the second jaw of the surgical stapling apparatus.

Claims

1. A surgical staple cartridge assembly for selective use with a surgical stapling apparatus having a first jaw in the form of an anvil assembly and a second jaw configured to selectively receive a staple cartridge assembly, the staple cartridge assembly comprising:

a cartridge housing defining a longitudinal axis, the cartridge housing including a tissue contacting surface having a plurality of rows of staple retaining slots formed therein, wherein the cartridge housing defines a knife slot;

a staple disposed in each staple retaining slot; and

a surgical buttress having a first body portion secured to and overlying the tissue contacting surface of the cartridge housing so that a longitudinal axis of the first body portion of the surgical buttress is substantially aligned with the longitudinal axis of the cartridge housing, the surgical buttress further including a second body portion extending distally from a proximal portion of the first body portion so that the second body portion extends at least partially over the first body portion;

wherein the proximal portion of the first body portion and a proximal portion of the second body portion of the surgical buttress each include a notch formed therein, each notch being axially aligned with the knife slot.

2. The surgical staple cartridge assembly according to claim 1, wherein a distal end of the first body portion of the surgical buttress extends distally of a distal-most staple retaining slot of the cartridge housing, and the proximal portion of the first body portion of the surgical buttress extends proximally of the staple retaining slots of the cartridge housing.

3. The surgical staple cartridge assembly according to claim 1, wherein the second body portion of the surgical buttress includes at least one attaching feature configured to selectively attach the second body portion to the anvil assembly when the surgical staple cartridge assembly is connected to the second jaw.

4. The surgical staple cartridge assembly according to claim 3, wherein the at least one attaching feature includes a strap extending transversely across the second body portion.

5. The surgical staple cartridge assembly according to claim 4, wherein the strap is disposed on a side of the second body portion facing a tissue contacting surface of the anvil assembly when the surgical staple cartridge assembly is connected to the second jaw.

6. The surgical staple cartridge assembly according to claim 3, wherein the at least one attaching feature includes a tab extending from a distal end of the second body portion, where the tab defines an aperture therein that is configured and dimensioned to receive a portion of the anvil assembly.

7. The surgical staple cartridge assembly according to claim 1, wherein the surgical buttress is biodegradable.

8. The surgical staple cartridge assembly according to claim 1, wherein the surgical buttress is non-biodegradable.

9. A surgical staple cartridge for selective use in a stapling apparatus having a first jaw in the form of an anvil assembly and a second jaw configured to selectively receive the staple cartridge, the staple cartridge comprising:

a cartridge housing;

a plurality of staples disposed in staple slots formed in the cartridge housing; and

a surgical buttress having first and second body portions, the first body portion being mounted to the cartridge housing and the second body portion being configured and dimensioned to be removably coupled to the anvil assembly when the staple cartridge is operably coupled with the second jaw, wherein the second body portion is configured and dimensioned to substantially overlie at least some fastener pockets defined in the anvil assembly, and wherein the first body portion substantially overlies at least some of the staple slots of the cartridge housing;

wherein at least one of the first and second body portions define a passage that permits longitudinal passage of a knife of the surgical stapling apparatus therethrough, the knife extending above a tissue contacting surface of the cartridge housing.

10. The surgical staple cartridge according to claim 9, wherein the second body portion includes at least one attaching feature that is configured and dimensioned to removably operably couple the second body portion to the anvil assembly.

11. The surgical staple cartridge according to claim 10, wherein the at least one attaching feature includes at least one band configured and dimensioned to extend across a back of the anvil assembly.

12. The surgical staple cartridge according to claim 10, wherein the at least one attaching feature includes a tab extending from the second body portion, wherein the tab defines an aperture therein.

13. The surgical staple cartridge according to claim 9, wherein the staple cartridge is disposable.

14. The surgical staple cartridge according to claim 9, wherein at least a portion of the first and second body portions of the at least one surgical buttress is made from biodegradable materials selected from the group consisting of:

natural collagenous materials, cat gut, and synthetic resins including those derived from alkylene carbonates, trimethylene carbonate, tetramethylene carbonate, caprolactone, valerolactone, dioxanone, polyanhydrides, polyesters, polyacrylates, polymethylmethacrylates, polyurethanes, glycolic acid, lactic acid, glycolide, lactide, polyhydroxy butyrates, polyorthoester, polyhydroxy alkanoates, homopolymers thereof, and copolymers thereof.

15. A surgical stapling apparatus according to claim 9, wherein at least a portion of the first and second body portions of the at least one surgical buttress is made from non-biodegradable materials selected from the group consisting, of:

polyolefins, polyethylene, polydimethylsiloxane, polypropylene, copolymers of polyethylene and polypropylene, blends of polyethylene and polypropylene, ultra high molecular weight polyethylene, polyamides, polyesters, polyethylene terephthalate, polytetrafluoroethylene, polyether-esters, polybutester, polytetramethylene ether glycol, 1,4-butanediol, and polyurethanes.