COMPRESSIBLE ADJUNCT AND METHOD FOR MAKING THE SAME

• US 20170086841A1
• Filed: 09/30/2015
• Published: 03/30/2017
• Est. Priority Date: 09/30/2015
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery LLC (Johnson & Johnson)
• Inventors: Vendely, Michael J., Shelton, Frederick E. IV, Harris, Jason L., Goldrein, Howell T., Moir, Robert S., Consonni, Sofia Maria, Akram, Ismail, Easter, Ashley D., Latham, Helen
• Granted Patent: US 10,285,699 B2
• Time in Patent Office: Days
• 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 17/0644 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 17/08 Wound clamps or clips, i.e. not or only partly penetrating the tissue suture bridges A61B17/0466; Devices for bringing together the edges of a wound
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/32 Surgical cutting instruments A61B18/042 takes precedence; suture cutters A61B17/0467; instruments for ligaturing or cutting A61B17/128; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133
• 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 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00831 Material properties
• CPC Class Codes: A61B 2017/00862 elastic or resilient for sutures A61B2017/0618
• CPC Class Codes: A61B 2017/00893 pharmaceutically effective
• CPC Class Codes: A61B 2017/00955 thermoplastic
• CPC Class Codes: A61B 2017/00964 composite
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07221 curved
• 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 2017/07257 : characterised by its anvil
• 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: A61L 17/105 : Polyesters not covered by A61L17/12
• CPC Class Codes: A61L 17/12 : Homopolymers or copolymers of glycolic acid or lactic acid
• CPC Class Codes: A61L 2420/02 : Methods for coating medical devices
• CPC Class Codes: B05D 1/007 : using an electrostatic field B05D1/02 - B05D1/16 take precedence
• CPC Class Codes: B05D 1/30 : performed by gravity only, i.e. flow coating
• CPC Class Codes: B29C 44/3453 : Feeding the blowing agent to solid plastic material
• CPC Class Codes: B29C 44/358 : Foamed of foamable fibres
• CPC Class Codes: B29C 48/0012 : combined with shaping by internal pressure generated in the material, e.g. foaming
• CPC Class Codes: B29C 48/0022 : combined with cutting
• CPC Class Codes: B29C 48/05 : Filamentary, e.g. strands
• CPC Class Codes: B29C 48/16 : Articles comprising two or more components, e.g. co-extruded layers
• CPC Class Codes: B29L 2031/753 : Medical equipment; Accessories therefor bloodbags, medical bags B29L2031/7148; artificial eyes B29L2011/0008
• CPC Class Codes: B29L 2031/7546 : Surgical equipment
• CPC Class Codes: B32B 2250/03 : 3 layers
• CPC Class Codes: B32B 2250/40 : Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
• CPC Class Codes: B32B 2307/50 : having particular mechanical properties
• CPC Class Codes: B32B 2307/54 : Yield strength; Tensile strength
• CPC Class Codes: B32B 2307/72 : Density
• CPC Class Codes: B32B 2307/732 : Dimensional properties
• CPC Class Codes: B32B 2307/736 : Shrinkable
• CPC Class Codes: B32B 2535/00 : Medical equipment, e.g. bandage, prostheses, catheter medical patches B32B2556/00
• CPC Class Codes: B32B 3/02 : characterised by features of form at particular places, e.g. in edge regions non-uniform thickness B32B3/263
• CPC Class Codes: B32B 3/08 : characterised by added members at particular parts layer formed of separate pieces of material which are juxtaposed side-by-side B32B3/14, B32B3/18
• CPC Class Codes: B32B 3/20 : of hollow pieces, e.g. tubes; of pieces with channels or cavities
• CPC Class Codes: B32B 3/266 : characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
• CPC Class Codes: B32B 5/024 : Woven fabric
• CPC Class Codes: B32B 5/026 : Knitted fabric
• CPC Class Codes: B32B 5/10 : characterised by a fibrous or filamentary layer reinforced with filaments
• CPC Class Codes: B32B 5/12 : characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
• CPC Class Codes: B32B 5/18 : characterised by features of a layer of foamed material
• CPC Class Codes: B32B 5/245 : another layer next to it being a foam layer
• CPC Class Codes: B32B 5/26 : another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B32B 7/05 : the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection using interposed adhesives or bonding materials applied in spaced arrangements B32B7/14
• CPC Class Codes: D01D 5/0023 : the material being a polymer melt
• CPC Class Codes: D01D 5/18 : by means of rotating spinnerets
• CPC Class Codes: D04H 1/565 : by melt-blowing
• CPC Class Codes: D10B 2331/041 : derived from hydroxy-carboxylic acids, e.g. lactones
• CPC Class Codes: D10B 2509/00 : Medical; Hygiene

Abstract

A compressible adjunct has a first portion, a second portion, and a middle portion. The middle portion is disposed between the first portion and the second portion. The middle portion comprises a first pillar, a second pillar, and an interconnecting member. The first pillar and the second pillar extend substantially between the first portion and the second portion. The interconnecting member is configured to engage at least the first pillar and the second pillar. When the compressible adjunct is compressed by a force, the first pillar is configured to deflect a first deflection and the second pillar is configured to deflect a second deflection. The first deflection differs from the second deflection.

Claims

1. A compressible adjunct, comprising:

a first portion;

a second portion; and

a middle portion, wherein the middle portion is disposed between the first portion and the second portion, and wherein the middle portion comprises;

a first pillar;

a second pillar, wherein the first pillar and the second pillar extend substantially between the first portion and the second portion; and

an interconnecting member, wherein the interconnecting member is configured to engage at least the first pillar and the second pillar, wherein when the compressible adjunct is compressed by a force, the first pillar is configured to deflect a first deflection and the second pillar is configured to deflect a second deflection, and wherein the first deflection differs from the second deflection.

2. The compressible adjunct of claim 1, wherein the interconnecting member fixably engages the first pillar and the second pillar.

3. The compressible adjunct of claim 1, wherein the interconnecting member slidingly engages the first pillar and the second pillar.

4. The compressible adjunct of claim 1, wherein the first pillar comprises a first cross sectional diameter, wherein the second pillar comprises a second cross sectional diameter, and wherein the first diameter differs from the second diameter.

5. The compressible adjunct of claim 4, wherein the first cross sectional diameter is greater than the second cross sectional diameter, and wherein the second deflection is greater than the first deflection.

6. The compressible adjunct of claim 1, wherein the first pillar comprises a first density, wherein the second pillar comprises a second density, and wherein the first density differs from the second density.

7. The compressible adjunct of claim 6, wherein the first density is greater than the second density, and wherein the second deflection is greater than the first deflection.

8. The compressible adjunct of claim 1, wherein the first pillar comprises a first cross sectional diameter, wherein the second pillar comprises a second cross sectional diameter, wherein the interconnecting member comprises a third cross sectional diameter, and wherein the first cross sectional diameter and the second cross sectional diameter differ from the third cross sectional diameter.

9. The compressible adjunct of claim 1, wherein the first pillar comprises a first density, wherein the second pillar comprises a second density, wherein the interconnecting member comprises a third density, and wherein the first density and the second density differ from the third density.

10. The compressible adjunct of claim 1, wherein the first pillar comprises:

a first end;

a second end; and

a middle section, wherein the first end engages the first portion, wherein the second end engages the second portion, and wherein the interconnecting member engages the middle section.

11. A compressible adjunct, comprising:

a base portion; and

a plurality of pillars, wherein the plurality of pillars comprises;

a first support, comprising;

a first pillar; and

a second pillar, wherein the first pillar and the second pillar engage the base portion, and wherein the first pillar and the second pillar are interconnected; and

a second support, comprising;

a third pillar; and

a fourth pillar, wherein the third pillar and the fourth pillar engage the base portion, wherein the third pillar and the fourth pillar are interconnected, wherein when the compressible adjunct is compressed by a force, the first support is configured to deflect a first deflection and the second support is configured to deflect a second deflection, and wherein the first deflection differs from the second deflection.

12. The compressible adjunct of claim 11, wherein the first support comprises a first material, and wherein the second support comprises a second material, and wherein the first material differs from the second material.

13. The compressible adjunct of claim 12, wherein the first support has a first average density, and wherein the second support has a second average density, and wherein the first average density differs from the second average density.

14. The compressible adjunct of claim 13, wherein the first average density is greater than the second average density, and wherein the second deflection is greater than the first deflection.

15. The compressible adjunct of claim 11, wherein the first pillar comprises a first cross sectional diameter, wherein the second pillar comprises a second cross sectional diameter, and wherein the first diameter differs from the second diameter.

16. The compressible adjunct of claim 11, wherein the first pillar comprises a first cross sectional diameter, wherein the second pillar comprises a second cross sectional diameter, wherein the third pillar comprises a third cross sectional diameter, and wherein the fourth pillar comprises a fourth cross sectional diameter.

17. The compressible adjunct of claim 16, wherein the first diameter differs from the third diameter, and wherein the second diameter differs from the fourth diameter.

18. The compressible adjunct of claim 11, wherein the first support comprises an first average height, wherein the second support comprises an second average height, and wherein the first height differs from the second height.

19. The compressible adjunct of claim 18, wherein the first average height is greater than the second average height and the first deflection is greater than the second deflection.

20. The compressible adjunct of claim 11, wherein the first pillar and the second pillar are woven together, and wherein when the compressible adjunct is compressed, the first pillar and the second pillar are configured to partially unwind.

21. A method of producing a fibrous compressible construct with a desired thickness, wherein the method comprises the steps of:

producing a biocompatible melt-blown non-woven substrate that comprises a substrate thickness lesser than a desired thickness, wherein the biocompatible melt-blown non-woven substrate comprises a plurality of fibers; and

applying a gas sorption process to the biocompatible melt-blown non-woven substrate to modify the substrate thickness to the desired thickness.

22. The method of claim 21, wherein the step of applying the gas sorption process comprises applying a high pressure gas to the biocompatible melt-blown non-woven substrate.

23. The method of claim 21, wherein the step of producing the biocompatible melt-blown non-woven substrate comprises:

extruding a polymer;

attenuating the extrudates into fibers by action of a high-temperature and high-speed gas; and

collecting the fibers to form a fibrous non-woven fabric.

24. The method of claim 21, wherein the step of applying a gas sorption process comprises:

applying a high pressure gas to the biocompatible melt-blown non-woven substrate; and

reducing the pressure of the gas.