NZ732814B2 - Laminated tissue graft product - Google Patents

Laminated tissue graft product

Info

Publication number
NZ732814B2
NZ732814B2 NZ732814A NZ73281415A NZ732814B2 NZ 732814 B2 NZ732814 B2 NZ 732814B2 NZ 732814 A NZ732814 A NZ 732814A NZ 73281415 A NZ73281415 A NZ 73281415A NZ 732814 B2 NZ732814 B2 NZ 732814B2
Authority
NZ
New Zealand
Prior art keywords
sheet
tissue graft
graft product
lugs
holes
Prior art date
Application number
NZ732814A
Other versions
NZ732814A (en
Inventor
Andrew Raymond Campbell
Barnaby Charles Hough May
Brian Roderick Ward
Original Assignee
Aroa Biosurgery Limited
Filing date
Publication date
Application filed by Aroa Biosurgery Limited filed Critical Aroa Biosurgery Limited
Priority to NZ771263A priority Critical patent/NZ771263A/en
Priority claimed from PCT/NZ2015/050215 external-priority patent/WO2016105212A1/en
Publication of NZ732814A publication Critical patent/NZ732814A/en
Publication of NZ732814B2 publication Critical patent/NZ732814B2/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
    • A61F2002/0081—Special surfaces of prostheses, e.g. for improving ingrowth directly machined on the prosthetic surface, e.g. holes, grooves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0076—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof multilayered, e.g. laminated structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0083—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using hook and loop-type fasteners
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
    • A61F2250/0063—Nested prosthetic parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
    • A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
    • A61L27/3633—Extracellular matrix [ECM]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
    • A61L27/58—Materials at least partially resorbable by the body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/716—Degradable
    • B32B2307/7163—Biodegradable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch

Abstract

tissue graft comprising two or more layers of material wherein each layer comprises extracellular matrix (ECM) or polymeric material and wherein the layers are laminated together by interlocking portions of one layer with portions of another layer. In one embodiment, a tissue graft comprises a first layer of material having multiple lugs and a second layer of material having multiple holes, each lug of the first layer being located through a hole in the second layer, the holes and the lugs having dimensions so that the lugs engage with a surface of the second layer and interlock the first layer with the second layer. In further embodiments, a method of preparing a tissue graft by laminating and interlocking two or more layers, the use of a tissue graft for replacing or repairing tissue in a human or animal, and an apparatus comprising a mould, a lug cutting means, a piercing means and a means for pushing lugs through piercings in layers of a tissue graft.

Claims (19)

1. A tissue graft product comprising two or more sheets of material wherein each sheet comprises extracellular matrix (ECM) or polymeric material and wherein the layers are laminated together by interlocking portions of one sheet with portions of another sheet, 5 wherein a first sheet of material has multiple lugs and a second sheet of material has multiple holes, each lug of the first sheet being located through a hole in the second sheet to interlock the first sheet with the second sheet.
2. A tissue graft product as claimed in claim 1, wherein the holes and the lugs are 10 dimensioned so that the lugs engage with a surface of the second sheet.
3. A tissue graft product according to claim 1 or 2 wherein each lug comprises a section of the first sheet that is cut from the first sheet and remains connected to the first sheet via a connection bridge.
4. A tissue graft product as claimed in any one of claims 1 to 3, further comprising a third sheet positioned between the first sheet and the second sheet, the third sheet having multiple holes aligned with holes of the second sheet; wherein the lugs of the first sheet extend through the holes in the third sheet to interlock the first sheet with the second and 20 third sheets.
5. A tissue graft product as claimed in any one of claims 1 to 3, further comprising a third sheet, the third sheet having multiple lugs aligned with holes of the second sheet; wherein the lugs of the third sheet extend through the holes in the second sheet to 25 interlock the third sheet with the second sheet.
6. A tissue graft product as claimed in claim 5, wherein each lug of the first sheet is interlocked with the third sheet and each lug of the third sheet is interlocked with the first sheet.
7. A tissue graft product as claimed in claim 5 or 6, wherein the third sheet comprises multiple lugs and the first sheet comprises multiple holes, wherein the lugs of the first sheet are offset from the lugs of the third sheet.
8. A tissue graft product as claimed in any preceding claim, wherein at least one sheet comprises ECM.
9. A tissue graft construct as claimed in any one of claims 1 to 8, comprising at total of 2, 3, 4, 5, 6, 7, 8, 9 or 10 sheets of ECM and/or polymeric material.
10. A tissue graft product as claimed in any one of claims 1 to 9, wherein the ECM is 5 formed from the propria-submucosa of the forestomach of a ruminant.
11. A tissue graft product as claimed in any one of claims 1 to 10, wherein at least one sheet comprises polymeric material. 10
12. A tissue graft product as claimed in claim 11, wherein the polymeric material is a synthetic polymeric material.
13. A tissue graft product as claimed in claim 12, wherein the synthetic polymeric material is formed from polypropylene, polytetrafluoroethylene, polyglycolic acid, polylactic 15 acid, poliglecaprone-25, or polyester.
14. A tissue graft product as claimed in claim 11, wherein the polymeric material is a natural polymeric material. 20
15. A tissue graft product as claimed in claim 14, wherein the natural polymeric material is a protein, polysaccharide, glycoprotein, proteoglycan, or glycosaminoglycan.
16. A tissue graft product as claimed in any one of claims 1 to 15, wherein each hole has a substantially circular, triangular, square, rectangular, diamond, or star shape.
17. A tissue graft product as claimed in any one of claims 1 to 16, which is a substantially flat sheet or has a 3-dimensional form shaped to conform to a location to which the product is to be grafted. 30 18. A method of preparing a tissue graft product of any one of claims 1 to 17, comprising laminating two or more sheets of material together by interlocking portions of one sheet with portions of another sheet, wherein each sheet comprises extracellular matrix
18.(ECM) or polymeric material, comprising the steps: (i) placing a first sheet of material having multiple lugs over a second sheet of 35 material having multiple holes, (ii) pushing the lugs of the first sheet through the holes in the second sheet, the holes and the lugs having dimensions so that the lugs engage with a surface of the second sheet and interlock the first sheet with the second sheet.
19. A method of preparing a tissue graft product, as claimed in claim 18, wherein the sheets of ECM and/or polymeric material are dried sheets.
NZ732814A 2014-12-22 2015-12-18 Laminated tissue graft product NZ732814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ771263A NZ771263A (en) 2014-12-22 2015-12-18 Laminated tissue graft product

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201462095493P 2014-12-22 2014-12-22
PCT/NZ2015/050215 WO2016105212A1 (en) 2014-12-22 2015-12-18 Laminated tissue graft product

Publications (2)

Publication Number Publication Date
NZ732814A NZ732814A (en) 2023-12-22
NZ732814B2 true NZ732814B2 (en) 2024-03-26

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