Tissue thickness compensator comprising tissue ingrowth features

• US 9,320,523 B2
• Filed: 03/28/2012
• Issued: 04/26/2016
• Est. Priority Date: 03/28/2012
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV, Vyakarnam, Murty
• Primary Examiner(s): Long, Robert
• Application Number:
  US13/433,126
• Publication Number:
  US 20130256366A1
• Time in Patent Office: 1,490 Days
• Field of Search: 2271751-1821
• US Class Current: 1/1
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 17/0643 with separate closing member, e.g. for interlocking with staple
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• 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 17/072 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/2909 Handles
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable, resorptive for implantable prostheses A61F2210/0004
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/00495 for two-component glue
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/0053 Loading magazines or sutures into applying tools
• CPC Class Codes: A61B 2017/00818 Treatment of the gastro-intestinal system
• CPC Class Codes: A61B 2017/00884 enhancing wound closure
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07235 containing different staples, e.g. staples of different shapes, sizes or materials
• CPC Class Codes: A61B 2017/07242 : achieving different staple heights during the same shot, e.g. using an anvil anvil having different heights or staples of different sizes
• CPC Class Codes: A61B 2017/0725 : with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• 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
• CPC Class Codes: A61B 2017/07278 : characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 : characterised by its cutter
• CPC Class Codes: A61B 2017/2908 : Multiple segments connected by articulations
• CPC Class Codes: A61B 2017/2919 : details of linkages or pivot points
• CPC Class Codes: A61B 2017/2923 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 : the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2933 : camming or guiding means
• CPC Class Codes: A61B 2017/2936 : Pins in guiding slots
• CPC Class Codes: A61B 2017/320052 : Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: Y10T 428/24124 : Fibers
• CPC Class Codes: Y10T 428/24331 : including nonapertured component
• CPC Class Codes: Y10T 428/24612 : Composite web or sheet

Abstract

In various embodiments, a compensator can be attachable to an anvil of a fastening instrument. The compensator can comprise a support layer configured to be attached to the anvil and a scaffold attached to the support layer. In at least one embodiment, the scaffold can comprise a plurality of scaffold layers comprised of a biocompatible material and a plurality of cavities, wherein the layers and the cavities can define a matrix favorable to tissue and cellular ingrowth.

Claims

1. A compensator attachable to an anvil of a fastening instrument, wherein the anvil includes a forming surface and a longitudinal slot configured to receive a cutting member, wherein the cutting member is configured to travel between a proximal end and a distal end of the anvil, wherein the forming surface is configured to deform a plurality of fasteners to fasten tissue, and wherein said compensator comprises:

a support layer configured to be attached to the anvil;

a scaffold attached to said support layer, said scaffold comprising;

a plurality of collapsible scaffold layers comprised of a biocompatible material, said collapsible scaffold layers comprising;

a first layer comprising a first pattern of fibers oriented in a direction at least substantially parallel to said longitudinal slot and extending between the proximal end and the distal end of the anvil; and

a second layer comprising a second pattern of fibers interwoven with said first layer; and

a plurality of cavities, wherein said support layer, said scaffold layers, and said cavities define a matrix favorable to tissue and cellular ingrowth, and wherein said collapsible scaffold layers are configured to adapt to the thickness of tissue captured within the fasteners.

2. The compensator of claim 1, wherein each said scaffold layer is comprised of a fiber weave.

3. The compensator of claim 1, wherein said direction comprises a first direction, wherein said second pattern of fibers is oriented in a second direction, and wherein said first direction is oblique to said second direction.

4. The compensator of claim 1, further comprising a medicament contained within said plurality of scaffold layers.

5. The compensator of claim 1, wherein said first layer is comprised of a first material and said second layer is comprised of a second material, and wherein said first material is different than said second material.

6. The compensator of claim 1, wherein a first medicament is absorbed within said first layer and a second medicament is absorbed within said second layer, and wherein said first medicament is different than said second medicament.

7. The compensator of claim 1, wherein said scaffold comprises an outer surface, and wherein each said cavity comprises an opening in said outer surface.

8. A compensator attachable to an anvil of a fastening instrument, wherein the anvil includes a forming surface configured to deform a plurality of fasteners to fasten tissue, and wherein said compensator comprises:

an attachment layer configured to be attached to the anvil;

a structural matrix attached to said attachment layer, said structural matrix comprising;

a plurality of collapsible matrix layers comprised of biocompatible material, said collapsible matrix layers comprising;

a first layer comprising a first material; and

a second layer comprising a second material different than said first material; and

a plurality of wells, wherein said matrix layers and said wells define a structural support favorable to tissue and cellular ingrowth, wherein said first material and said second material are configured to induce a biologic response such that tissue is encouraged toward said wells upon the interaction of said first material and said second material, and wherein said collapsible matrix layers are configured to adapt to the thickness of tissue captured within the fasteners.

9. The compensator of claim 8, wherein each said matrix layer is comprised of a fiber weave.

10. The compensator of claim 8, wherein said first layer comprises a first pattern of fibers and said second layer comprises a second pattern of fibers, and wherein said first pattern of fibers is different than said second pattern of fibers.

11. The compensator of claim 8, wherein said first layer comprises fibers oriented in a first direction, wherein said second layer comprises fibers oriented in a second direction, and wherein said first direction is oblique to said second direction.

12. The compensator of claim 8, further comprising a medicament contained within said plurality of matrix layers.

13. The compensator of claim 8, wherein said first medicament is absorbed within said first layer and said second medicament is absorbed within said second layer.

14. The compensator of claim 8, wherein said structural matrix comprises an outer surface, and wherein each said well comprises an opening in said outer surface.

15. A stapling assembly for use with a fastening instrument and is configured to deform a plurality of fasteners to fasten tissue, said stapling assembly comprising:

an anvil comprising a forming surface and a longitudinal slot configured to receive a cutting member;

a compensator comprising;

a support layer attached to said anvil;

a scaffold attached to said support layer, said scaffold comprising;

a plurality of collapsible scaffold layers comprised of a biocompatible material, said collapsible scaffold layers comprising;

a first layer comprising a first medicament and a first array of fibers, wherein said first array of fibers is oriented at least substantially parallel to said longitudinal slot; and

a second layer comprising a second medicament and a second array of fibers;

a medicament embedded in said scaffold layers; and

a plurality of cavities, wherein said scaffold layers and said cavities define a matrix favorable to tissue and cellular ingrowth, wherein said first medicament and said second medicament are configured to interact with each other generating a biological reaction to encourage cellular migration into said cavities, and wherein said collapsible scaffold layers are configured to adapt to the thickness of tissue captured within the fasteners.