Buttress and surgical stapling apparatus

• US 9,005,243 B2
• Filed: 07/18/2013
• Issued: 04/14/2015
• Est. Priority Date: 06/27/2007
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Nentwick, Brian, Gravagna, Philippe, Bayon, Yves, Dassonville, Dagmar, Meneghin, Alfredo, Lecuivre, Julie, Stopek, Megan
• Primary Examiner(s): Anderson, Gregory
• Assistant Examiner(s): Lauer, Christina
• Application Number:
  US13/945,218
• Publication Number:
  US 20130310873A1
• Time in Patent Office: 635 Days
• Field of Search: 227/175.1, 227/176.1, 227/179.1, 227/180.1, 227/178.1, 227/19, 606139-143, 606/215
• US Class Current: 606/215
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00849 with respect to tissue, e.g. hollow organs
• CPC Class Codes: A61B 2017/00889 antimicrobial, disinfectant
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: B29C 39/123 Making multilayered articles
• CPC Class Codes: B29C 39/22 Component parts, details or accessories; Auxiliary operations
• CPC Class Codes: B29K 2105/206 Meshes, lattices or nets
• CPC Class Codes: B29L 2031/7546 Surgical equipment

Abstract

Multilayer structures including a porous layer and a non-porous layer are useful as buttresses when associated with a surgical stapling apparatus.

Claims

1. A surgical stapling apparatus comprising:

a staple cartridge containing at least one staple;

an anvil having a staple forming surface; and

a buttress positioned adjacent the anvil or the cartridge, the buttress comprising a non-porous layer disposed between first and second porous layers and a reinforcement member positioned within the non-porous layer,

wherein pores of the porous layers do not span across the entire thickness of the porous layers.

2. The surgical stapling apparatus of claim 1, wherein the non-porous layer comprises at least one material selected from the group consisting of collagen, gelatin, fibrin, fibrinogen, elastin, keratin, albumin, hydroxyethyl cellulose, cellulose, oxidized cellulose, hydroxypropyl cellulose, carboxyethyl cellulose, carboxymethylcellulose, chitan, chitosan, alginate, poly(lactic acid), poly(glycolic acid), poly(hydroxybutyrate), poly (phosphazine), polyesters, polyethylene glycols, polyalkyleneoxides, polyacrylamides, polyhydroxyethylmethylacrylate, polyvinylpyrrolidone, polyvinyl alcohols, poly(caprolactone), poly(dioxanone), polyacrylic acid, polyacetate, polycaprolactone, polypropylene, aliphatic polyesters, glycerols, poly(amino acids), copoly(ether-esters), polyalkylene oxalates, polyamides, poly(iminocarbonates), polyalkylene oxalates, polyoxaesters, polyorthoesters, polyphosphazenes and combinations thereof.

3. The surgical stapling apparatus of claim 1, wherein the porous layer comprises at least one material selected from the group consisting of poly(lactic acid), poly(glycolic acid), poly(hydroxybutyrate), poly(caprolactone), poly(dioxanone), polyalkyleneoxides, copoly(ether-esters), collagen, gelatin, thrombin, fibrin, fibrinogen, fibronectin, elastin, albumin, hemoglobin, ovalbumin, polysaccharides, hyaluronic acid, chondroitin sulfate, hydroxyethyl starch, hydroxyethyl cellulose, cellulose, oxidized cellulose, hydroxypropyl cellulose, carboxyethyl cellulose, carboxymethyl cellulose, chitan, chitosan, agarose, maltose, maltodextrin, alginate, clotting factors, methacrylate, polyurethanes, cyanoacrylates, platelet agonists, vasoconstrictors, alum, calcium, RGD peptides, proteins, protamine sulfate, epsilon amino caproic acid, ferric sulfate, ferric subsulfates, ferric chloride, zinc, zinc chloride, aluminum chloride, aluminum sulfates, aluminum acetates, permanganates, tannins, bone wax, polyethylene glycols, fucans and combinations thereof.

4. The surgical stapling apparatus of claim 1, wherein the reinforcement member is a mesh.

5. The surgical stapling apparatus of claim 1, wherein the reinforcement member is a suture.

6. The surgical stapling apparatus of claim 1, comprising a plurality of reinforcement members oriented in at least one common direction.

7. The surgical stapling apparatus of claim 1, wherein the reinforcement member is encapsulated within the non-porous layer.

8. The surgical stapling apparatus of claim 1, wherein a first reinforcement member is encapsulated within the non-porous layer and a second reinforcement layer is encapsulated within the porous layer.

9. The surgical stapling apparatus of claim 8, wherein the first reinforcement member comprises a plurality of reinforcement members oriented in a first direction within the non-porous layer and the second reinforcement layer comprises a plurality of reinforcement members oriented in a second direction within the porous layer.

10. The surgical stapling apparatus of claim 1, wherein the pores of the porous layer are present on a central portion thereof.

11. The surgical stapling apparatus of claim 1, wherein the buttress further comprises a bioactive agent.

12. The surgical stapling apparatus of claim 11, wherein the bioactive agent is combined with the porous layer.

13. The surgical stapling apparatus of claim 11, wherein the bioactive agent is combined with the non-porous layer.

14. The surgical stapling apparatus of claim 11, wherein the bioactive agent is combined with the reinforcement member.

15. A surgical stapling apparatus comprising:

a staple cartridge containing at least one staple;

an anvil having a staple forming surface; and

a buttress positioned adjacent the anvil or the cartridge, the buttress comprising a non-porous layer disposed between first and second porous layers, and a reinforcement member positioned within the non-porous layer,

wherein the reinforcement member comprises chopped fibers and wherein pores of the porous layers do not span across the entire thickness of the porous layers.

16. A method of sealing a wound comprising:

enclosing tissue between a cartridge and an anvil of a surgical stapling apparatus, one of the cartridge or anvil having a buttress positioned adjacent thereto, the buttress comprising a non-porous layer disposed between first and second porous layers having pores which do not span across the entire thickness of the porous layers, and a reinforcement member positioned within the non-porous layer; and

ejecting staples from said cartridge to secure the buttress to the tissue.