EP4225980A1 - Hitzeaktivierbare kräuseltextilie - Google Patents
Hitzeaktivierbare kräuseltextilieInfo
- Publication number
- EP4225980A1 EP4225980A1 EP21801356.3A EP21801356A EP4225980A1 EP 4225980 A1 EP4225980 A1 EP 4225980A1 EP 21801356 A EP21801356 A EP 21801356A EP 4225980 A1 EP4225980 A1 EP 4225980A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat
- activated
- textile
- yam
- crimping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004753 textile Substances 0.000 title claims abstract description 153
- 238000002788 crimping Methods 0.000 title claims abstract description 109
- 239000004744 fabric Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- -1 polyethylene terephthalate Polymers 0.000 claims description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
- 238000009941 weaving Methods 0.000 claims description 9
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001610 polycaprolactone Polymers 0.000 claims description 8
- 239000004632 polycaprolactone Substances 0.000 claims description 8
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000002759 woven fabric Substances 0.000 claims description 8
- 229930182843 D-Lactic acid Natural products 0.000 claims description 4
- JVTAAEKCZFNVCJ-UWTATZPHSA-N D-lactic acid Chemical compound C[C@@H](O)C(O)=O JVTAAEKCZFNVCJ-UWTATZPHSA-N 0.000 claims description 4
- 208000032750 Device leakage Diseases 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 239000004417 polycarbonate Substances 0.000 claims description 4
- 229920000515 polycarbonate Polymers 0.000 claims description 4
- 239000004626 polylactic acid Substances 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 229920000747 poly(lactic acid) Polymers 0.000 claims 2
- 235000004879 dioscorea Nutrition 0.000 description 120
- 230000000694 effects Effects 0.000 description 19
- 239000010410 layer Substances 0.000 description 14
- 239000008280 blood Substances 0.000 description 8
- 210000004369 blood Anatomy 0.000 description 8
- 239000000835 fiber Substances 0.000 description 6
- 238000009998 heat setting Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 206010053567 Coagulopathies Diseases 0.000 description 5
- 230000035602 clotting Effects 0.000 description 5
- 238000003856 thermoforming Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241001580935 Aglossa pinguinalis Species 0.000 description 2
- 244000052909 Dioscorea esculenta Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000002682 general surgery Methods 0.000 description 2
- 210000003709 heart valve Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010002915 Aortic valve incompetence Diseases 0.000 description 1
- 102000002508 Peptide Elongation Factors Human genes 0.000 description 1
- 108010068204 Peptide Elongation Factors Proteins 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 208000002223 abdominal aortic aneurysm Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000002095 anti-migrative effect Effects 0.000 description 1
- 210000001765 aortic valve Anatomy 0.000 description 1
- 201000002064 aortic valve insufficiency Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 210000004115 mitral valve Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 210000000591 tricuspid valve Anatomy 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/50—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
- D03D15/567—Shapes or effects upon shrinkage
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/004—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft with weave pattern being non-standard or providing special effects
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D27/00—Woven pile fabrics
- D03D27/02—Woven pile fabrics wherein the pile is formed by warp or weft
- D03D27/06—Warp pile fabrics
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/18—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads
- D04B1/20—Other fabrics or articles characterised primarily by the use of particular thread materials elastic threads crimped threads
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
- D04B21/16—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes incorporating synthetic threads
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/01—Surface features
- D10B2403/011—Dissimilar front and back faces
- D10B2403/0113—One surface including hollow piping or integrated straps, e.g. for inserts or mountings
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/02—Cross-sectional features
- D10B2403/023—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system
- D10B2403/0231—Fabric with at least two, predominantly unlinked, knitted or woven plies interlaced with each other at spaced locations or linked to a common internal co-extensive yarn system including contracting yarn, e.g. blister fabrics
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2509/00—Medical; Hygiene
- D10B2509/06—Vascular grafts; stents
Definitions
- This application is directed to heat-activated crimping textiles.
- this application is directed to heat-activated crimping textiles including a portion of the yams having a greater shrinkage factor than other yams, weave structures which promote crimping, or both.
- transcatheter aortic valve replacement/repair (“TAVR”) surgery has grown at a 30% increase annually over open surgical approaches.
- the challenges within TAVR include patient-prosthesis mismatch, coronary obstruction, heart rhythm abnormalities post implantation, stroke, and paravalvular leaks post implantation.
- Significant paravalvular aortic regurgitation (“AR”) or paravalvular leak (“PVL”) (moderate and severe) occurs in approximately 15-20% of TAVR cases and is one of the most important prognostic factors of mortality during both short- and long-term follow-up.
- Transcatheter mitral valve replacement (“TMVR”) and Transcatheter tricuspid valve replacement (“TTVR”) have moderate-to-high PVL in 3.5% of cases.
- PVL skirting is currently made from warp knitted pile fabrics which use loops to create a compressibility factor to the textile. These fabrics do a good job of creating a soft voluminous filler between the transcatheter heart valve device and the native anatomy but have only their individual loop yam strength to create any tenacity needed to spring back from a compressed state.
- Knitted pile fabrics are not dense enough to create a blood tight vessel to contain blood flow. Rather, they depend on the looped regions to create a torturous path between the device and vessel that allows for clotting. [0006] It would be desirable in the art to have an implantable textile not having the aforementioned drawbacks.
- a heat-activated crimping textile includes a plurality of a first yarn, a plurality of a second yarn interlaced with the plurality of the first yarn, and a plurality of a third yam interlaced with the plurality of the first yarn, the plurality of the second yam, or both.
- the third yarn includes a heat-activated shrinkage factor of greater than 30% when exposed to a predetermined temperature.
- a heat-activated crimping textile includes a first plurality of wefts formed of a first yam, a first plurality of warps formed of a second yarn interwoven with the first plurality of wefts, and a second plurality of warps formed of a third yam interwoven with the first plurality of wefts.
- the first yarn includes a heat-activated shrinkage factor of less than 10% when exposed to a predetermined temperature.
- the second yarn includes a heat- activated shrinkage factor of less than 10% when exposed to the predetermined temperature.
- the third yam includes a heat-activated shrinkage factor between 35% and 50% when exposed to the predetermined temperature.
- the predetermined temperature is at least 150 °C.
- the heat-activated crimping textile includes a repeating weaving pattern in which the third yam interlaces at least two of the first plurality of wefts sequentially, then floats across a minimum of three of the first plurality of wefts sequentially only across a first side of the heat-activated crimping textile, and then repeats.
- the heat-activated crimping textile and the crimped textile formed from the heat-activated crimping textile are substantially unsewn and substantially free of needle punctures and key holes.
- FIG. 1 is a woven loomstate diagram depicting a heat-activated crimping textile, according to an embodiment of the present disclosure.
- FIG. 2 is a diagram of the woven textile after the thermoforming process depicting a crimped textile formed from the heat-activated crimping textile of FIG. 1, according to an embodiment of the present disclosure.
- FIG. 3 is a perspective view of the crimped textile of FIG. 2, according to an embodiment of the present disclosure.
- FIG. 4 is a plan view of the heat- activated crimping textile of FIG. 1, according to an embodiment of the present disclosure.
- FIG. 5 is a diagram of a woven textile having a channel or woven effect running perpendicular to a pleat, according to an embodiment of the present disclosure.
- FIG. 6 is a plan view of a woven textile including a combination of a single layer weave and a crimped weave repeating in a half drop or brick layout repeat to form a checkered pattern of pleats/ruffles, according to an embodiment of the present disclosure.
- FIG. 7 is knit pattern for a warp knit fabric, according to an embodiment of the present disclosure.
- FIG. 8 is a plan view of a warp knit fabric formed according to the knit pattern of FIG. 7 following heat setting above the predetermined temperature, according to an embodiment of the present disclosure.
- FIG. 9 is an elevation view of a portion of the warp knit fabric of FIG. 8, according to an embodiment of the present disclosure.
- FIG. 10 is a knit pattern for a knitted tube fabric, according to an embodiment of the present disclosure.
- FIG. 11 is a knitted tube fabric formed according to the knit pattern of FIG. 10, according to an embodiment of the present disclosure.
- FIG. 12 is the knitted tube fabric of FIG. 11 following heat setting above the predetermined temperature, according to an embodiment of the present disclosure.
- Embodiments of the present invention create a textile with customized pleats, ridges, or ruffles that are designed by a specific weave pattern that joins to a ground layer to create raised regions that are resilient when compressed but can expand back to its thermoformed state when the compression is released.
- Embodiments of the present disclosure in comparison to textiles lacking one or more of the features of the present invention, may provide the advantage of the textile being able to be deployed to fdl space, such as between a device and native tissue/vessel wall when used to seal heart valve devices and gives antimigratory properties during the deployment process to inhibit paravalvular leakage.
- the textile may provide a more robust layer with more resilience, strength, and tunable height distinction between the multilayers that form the textile.
- Embodiments of the present disclosure may eliminate any sewing processes typically needed to create pleats/ruffles by using a combination of high shrink/low shrink yams, weave designs, and thermoforming processes.
- fabrics may be tuned so as to have regions that may be dense for blood tight blocking and regions of more open porous areas for blood capturing and clotting.
- a heat-activated crimping textile 100 includes a plurality of a first yarn 102, a plurality of a second yarn 104 interlaced with the plurality of the first yam 102, and a plurality of a third yam 106 interlaced with the plurality of the first yarn 102, the plurality of the second yam 104, or both.
- the third yarn 106 includes a heat-activated shrinkage factor of greater than 30% when exposed to a predetermined temperature.
- the third yam 106 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the first yarn 102 includes a heat-activated shrinkage factor of less than 15% when exposed to the predetermined temperature and the second yarn 104 includes a heat-activated shrinkage factor of less than 15% when exposed to the predetermined temperature.
- the first yam 102 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of less than 15%, alternatively, less than 10%, alternatively between 5% to 9%, alternatively 6% to 8%, alternatively 7%, or any sub-range contained therein.
- the second yam 104 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of less than 15%, alternatively, less than 10%, alternatively between 5% to 9%, alternatively 6% to 8%, alternatively 7%, or any subrange contained therein.
- the shrinkage factor of the third yarn 106 exceeds that of the greatest shrinkage factor of the first yarn 102 and the second yam 104 by at least 30 points (e.g., if the first yam 102 and the second yam 104 have a heat-activated shrinkage factor of 10%, the third yarn 106 would have a heat activated shrinkage factor of at least 40%).
- the first yam 102 includes a heat-activated shrinkage factor of greater than 30% when exposed to the predetermined temperature and the second yarn 104 includes a heat-activated shrinkage factor of greater than 30% when exposed to the predetermined temperature.
- the first yam 102 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the second yam 104 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the first yam 102 includes a heat-activated shrinkage factor of less than 15% when exposed to the predetermined temperature and the second yarn 104 includes a heat-activated shrinkage factor of greater than 30% when exposed to the predetermined temperature.
- the first yam 102 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of less than 15%, alternatively, less than 10%, alternatively between 5% to 9%, alternatively 6% to 8%, alternatively 7%, or any sub-range contained therein.
- the second yam 104 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the first yam 102 includes a heat-activated shrinkage factor of greater than 30% when exposed to the predetermined temperature and the second yarn 104 includes a heat-activated shrinkage factor of less than 15% when exposed to the predetermined temperature.
- the first yam 102 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the second yam 104 may include any suitable heat-activated shrinkage factor when exposed to the predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of less than 15%, alternatively, less than 10%, alternatively between 5% to 9%, alternatively 6% to 8%, alternatively 7%, or any sub-range contained therein.
- any of the first yarn 102, the second yam 104, and the third yam 106 may independently be flat, round, multilobal, texturized, be core and effect yarns, or any combination thereof.
- core and effect yams include, but are not limited to, chenille, boucle, and any other “fancy” yarn made by plying multiple yarns or fibers together while creating a textured effect on the outer surface of the yam.
- Boucle yarn for example, may have an inner yarn of straight fibers while the outer surface is wrapped with another bundle of fibers that create a looping effect by twisting and intertwining the outer yams to create a desired texture effect.
- Core and effect yams may also be created by overfeeding one set of fibers and underfeeding the other set such that the overfed set twists around the underfed set creating a textured yarn.
- Monofilament fiber may also be utilized, and, in one embodiment, incorporation of monofilament fiber increases pleat resilience.
- the first yarn 102 and the second yam 104 may be formed from any suitable materials, including, but not limited to, polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), polystyrene (PS), and polycarbonate (PC), nylons as well as bioresorbable thermoplastics such as but not limited to polylactic acid (PLA), including poly (1- lactic acid) (PLLA), polycaprolactone (PCL), and poly lactic-co-glycolic acid (PLGA) or combinations thereof.
- PET polyethylene terephthalate
- PP polypropylene
- PE polyethylene
- PVC polyvinylchloride
- PS polystyrene
- PC polycarbonate
- nylons as well as bioresorbable thermoplastics such as but not limited to polylactic acid (PLA), including poly (1- lactic acid) (PLLA), polycaprolactone (PCL), and poly lactic-co-glycolic acid (
- the first yam 102 may be the same material (compositionally indistinct) as the second yam 104 or may be a different material (compositionally distinct) from the second yarn 104.
- compositionally distinct and “compositionally indistinct” refers to chemical composition rather than structural composition.
- the third yam 106 may be a high shrinkage yarn having a heat-activated shrinkage factor of greater than 30%, but may be otherwise formed of like materials as the first and second yam, including, but not limited to, polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), polystyrene (PS), and polycarbonate (PC), nylons as well as bioresorbable thermoplastics such as but not limited to polylactic acid (PLA), including poly (1-lactic acid) (PLLA), polycaprolactone (PCL), and poly lactic-co-glycolic acid (PLGA) or combinations thereof.
- PET polyethylene terephthalate
- PP polypropylene
- PE polyethylene
- PVC polyvinylchloride
- PS polystyrene
- PC polycarbonate
- nylons as well as bioresorbable thermoplastics
- PLA polylactic acid
- PLA polylactic acid
- PLA polylactic acid
- PLA poly
- the materials used for the first yarn 102, the second yarn, 104, and the third yam 106 are able to withstand the same general exposure to heat so that melting or other undesirable decomposition or physical changes of the first yarn 102, the second yam, 104, and the third yam 106 are avoided.
- the shrinkage factor of the yarn in addition to the material from which the yarn is formed, may also be influenced or controlled by the polymerization process, the extmsion process, or both. As such, two yarns formed of the same material (chemically) may have significantly different ranges of shrinkage.
- the predetermined temperature may be any suitable temperature, including, but not limited to, at least 150 °C, alternatively at least 160 °C, alternatively at least 170 °C, alternatively at least 180 °C, alternatively at least 190 °C, alternatively at least 200 °C, alternatively at least 205 °C, or any sub-range or combination thereof It will be appreciated that the predetermined temperatures for yams the first yam 102, the second yam, 104, and the third yam 106 formed of PET may vary depending on the material used in combination with the heat-activated shrinkage factor for the particular yam utilized.
- the third yam 106 floats only across a first side 120 of the heat- activated crimping textile 100. In another embodiment, the third yarn 106 floats across both sides of the heat-activated crimping textile 100, which may form pleats on both sides (face and back) of the heat-activated crimping textile 100.
- the crimped textile 110 may have a pleated structure, a ruffled stmcture, a channeled structure, or combinations thereof.
- the pleats, ruffles, or channels may have any suitable height including, but not limited to, a height ranging from about 0.5 mm to about 10 mm, alternatively about 0.5 mm, alternatively about 1 mm, alternatively about 2 mm, alternatively about 3 mm, alternatively about 4 mm, alternatively about 5 mm, alternatively about 6 mm, alternatively about 7 mm, alternatively about 8 mm, alternatively about 9 mm, or alternatively about 10 mm.
- “about” indicates ⁇ 10% of the value being modified, as well as the unmodified value, such that “about” 1 includes a range of 0.9-1.1 and alternatively 1.
- the height is in the range of about 0.5 mm to about 4 mm, alternatively about 0.5 mm to about 6 mm, alternatively about 1 mm to about 5 mm, alternatively about 2 mm to about 6 mm, alternatively about 4 mm to about 8 mm, alternatively about 6 mm to about 10 mm, or any sub-range or combination there thereof.
- the heat-activated crimping textile 100 and the crimped textile 110 formed from the heat-activated crimping textile 100 may be substantially unsewn, substantially free of needle puncture, substantially free of keyholes, or combinations thereof.
- substantially free excludes the edges of the heat-activated crimping textile 100 and the crimped textile 110 up to, but not exceeding, 10% of the surface area of the heat-activated crimping textile 100 and the crimped textile 110.
- the heat-activated crimping textile 100 and the crimped textile 110 formed from the heat-activated crimping textile 100 are unsewn, free of needle puncture, free of keyholes, or combinations thereof.
- the second yam 104 forms a pleat, ruffle, channel, or combination thereof as the third yam 106 shrinks, pulling the heat-activated crimping textile 100 together and buckling the first yam 102 and the second yarn 104 upward.
- This pleating effect may also be achieved, for example, by changing the position of second yam 104 to third yam 106 in an every-other-end alternating pattern. In such a pattern, it would be a second yarn 104 first end, third yam 106 second end, second yarn 104 third end, and third yam 106 fourth end drawing patterning. As long as the third yam 106 ends are floating on the first side 120 of the heat-activated crimping textile 100 and the second yams 104 are on the face opposite to the first side 120 with first yarns 102, a ruffle may be formed during thermoforming.
- the crimped textile 110 formed from the heat-activated crimping textile 100 is a medically implantable textile.
- the medically implantable textile is a paravalvular leak skirt, a textile for use with abdominal aortic aneurysms, a textile for use with general surgery, or combinations thereof.
- Textile density may be tuned depending upon application. For example, if water/blood tightness is not as concerning as thickness in certain applications, such as for general surgery, a less dense, thinner, or thicker fabric may be formed by changing the weave construction and count of first yam 102, second yarn 104, third yam 106, or combinations thereof.
- the crimped textile 110 formed from the heat-activated crimping textile 100 is configured to clot blood and seal during a surgery and to form a ground layer which is blood tight.
- all yam processing and weaving or knitting or both to form the heat-activated crimping textile 100 is conducted without treating or exposing the first yam 102, the second yarn 104, and the third yam 106 to temperatures above 40 °C in order to preserve the greatest shrinkability possible during the thermoforming processes. If scouring is performed, the scouring may be conducted at ambient temperatures.
- the first yarn 102, second yam 104, or third yam 106 may include any suitable tensile strength and elongation factor, including, but not limited to, a tensile strength of about 4 g/d to about 100 g/d and elongation of about 3% to about 30%.
- Heat setting the heat-activated crimping textile 100 to form the crimped textile 110 may include any suitable heat source and environment, including, but not limited to, an oven, exposure to heated air, immersion in heated water, exposure to heated fluid vapor, heated iron or fixtures, or combinations thereof
- the top surface may have a constant coverage, while the higher shrinkage ground will lose coverage as the material contracts during a thermoforming process.
- the ground region may physically pull edge regions of the top surface towards each other.
- a heat-activated crimping textile 100 includes at least one layer of fancy yam such as boucle, chenille, or other core and effect yams that provide loft and increased surface area for better sealing potential.
- a heat-activated crimping textile 100 includes a ground region with a tighter interlacement pattern, such as, but not limited to, a tabby weave, and another layer with longer interlacement pattern, such as, but not limited to, a satin, a rib, or a twill, such that the longer float areas may be looser and bulkier for maintaining a dense ground layer for better clotting potential.
- a pocket structure into the outer layer for blood capturing potential is incorporated into the heat-activated crimping textile 100.
- a heat-activated crimping textile 100 incorporates yam fibrils which circumferentially cover and extend out of the surface of the heat-activated crimping textile 100.
- the yam fibrils may be present in the first yam 102, the second yarn 104, the third yam 106, the optional fourth yarn 132, or combinations thereof.
- a method for forming a heat-activated crimping textile 100 includes a texturizing technique applied to a surface of the heat-activated crimping textile 100 (knitted or woven), such as, but not limited to, napping, to break the outer loops or floats resting on one side of the heat-activated crimping textile 100.
- the heat-activated crimping textile 100 is a woven fabric 112
- the plurality of the first yarn 102 forms a first plurality of wefts 114
- the plurality of the second yarn 104 forms a first plurality of warps 116 interlaced with the first plurality of wefts 114 by interweaving
- the plurality of the third yam 106 forms a second plurality of warps 118 interlaced with the first plurality of wefts 114 by interweaving
- the plurality of crimps 108 propagates along the first plurality of wefts 114.
- the woven fabric 112 may have any suitable repeating weaving pattern, including, but not limited to, a repeating weaving pattern in which the third yarn 106 interlaces at least 2 of the first plurality of wefts 114 sequentially, typically 3 to 5, then floats across a minimum of 3, typically 4 to 20 of the first plurality of wefts 114 sequentially, and then repeats the interlacing and floating (which may be the same or a different number as the prior interlacement and/or float.
- the third yarn 106 interlaces 4 of the first plurality of wefts 114 sequentially, then floats across 8 of the first plurality of wefts 114 sequentially, and then repeats.
- a fourth yarn 132 having a high shrinkage factor having a heat-activated shrinkage factor of greater than 30% may optionally be incorporated as a second plurality of wefts 138 in addition to the second yam 104 forming the first plurality of wefts 114.
- the fourth yam 132 may include any suitable heat-activated shrinkage factor when exposed to a predetermined temperature, including, but not limited to, a heat-activated shrinkage factor of greater than 30%, alternatively, greater than 35%, alternatively greater than 40%, alternatively between 35% to 50%, alternatively 40% to 45%, or any sub-range contained therein.
- the fourth yam 132 may be the same as the third yarn 106 in material and structure, distinct from the third yam 106 in at least one of material or structure, or distinct from the third yam 106 in both material and structure.
- the heat-activated crimping textile 100 may be woven on a jacquard, dobby, or hand loom as a multi-surfaced flat woven or tubular structure.
- the jacquard, dobby, or hand loom includes at least four harnesses for separating the standard shrink yam ends (heat- activated shrinkage factor of less than 15%) from the high shrink yarn ends (heat-activated shrinkage factor of at least 30%).
- Woven fabrics 112 may be made with combination warp in which half the ends have a higher heat-activated shrinkage factor than the other half of the ends.
- the third yam 106 (or the fourth yam 132 if present) may be segregated into different sections of a heat-activated crimping textile 100 either by using multiple beams or by using a warping pattern which designates certain areas for the first yarn 102 or second yarn 104 as opposed to the third yam 106 (or optionally the fourth yarn 132).
- Exemplary patterns include, but are not limited to, a pattern of two ends of the third yam 106, then two ends of the second yarn 104, and repeating.
- alternating warp end patterning may be used (one second yam 104 end, then one third yam 106 end), for example.
- a woven fabric 112 includes at least one layer of fancy yam such as boucle, chenille, and other core and effect yarns that create loft and increased surface area for better sealing potential.
- a woven fabric 112 includes a woven ground with a tighter interlacement pattern, such as, but not limited to, a tabby weave, and an outer layer with longer interlacements pattern, such as, but not limited to, a satin, a rib, or a twill, which provides for the longer float areas to be looser and bulkier for maintaining a dense ground layer for better clotting potential.
- a further embodiment includes the incorporation of a pocket stmcture into the outer layer for blood capturing potential.
- a heat-activated crimping textile 100 includes a raised area that forms bulk and volume protruding off a surface of the heat-activated crimping textile 100 in a z- axis.
- the raised area may be formed by pocketing or creating pleats, folds, or both that rise perpendicularly off the flat plane of the pleated fabric layer.
- Textured yam may be incorporated into the folds or pleats to further increase surface area and texture.
- a multilayer shrink region which pleats may be formed with a ground layer of high shrink yam (having a heat-activated shrinkage factor of at least 30%) floating behind a region with the low shrink yarn (having a heat- activated shrinkage factor of less than 15%).
- the raised areas are formed by creating a pocket weave and inserting a stuffer yam (warp, weft, or both) into the pocket weave to fill the space and lift up a region of the heat-activated crimping textile 100.
- the ravines may be tied down with a single cloth weave structure creating varying thicknesses to the textile and valleys for reducing clotting, increasing compressibility of the heat-activated crimping textile 100, improving sealing between an artificial device and vessel wall, or combinations thereof.
- This embodiment may incorporate only yarn with a common shrink factor (within 10% on an absolute basis) or may incorporate a yam with a higher shrink factor than the remaining yam (greater than 10% on an absolute basis).
- the raised areas may form a grid pattern.
- a heat-activated crimping textile 100 includes a channel or woven effect 122 mnning perpendicular to a pleat 124 which creates a checkered effect that disrupts the length of the ruffled lumen and which may create high and low areas of blood capturing characteristics.
- Including a channel or woven tube effect 122 mnning perpendicular to a pleat 124 may maintain a higher degree of stretch within the heat-activated crimping textile 100 relative to a comparative textile lacking the channel or woven effect 122.
- a heat-activated crimping textile 100 When rotated and cut on the bias 126 of the cloth at an about 45° angle, such a heat-activated crimping textile 100 may have better elongation and stretch potential compared to when cut on the machine 128 or cross-machine directions 130.
- a heat- activated crimping textile 100 includes a checkered effect 123 by foregoing the channel weave and using a combination of a single layer weave and a crimped weave repeating in a half drop or brick layout repeat to form the checkered effect 123 of pleats 124 (or ruffles).
- first yarn 102 is woven in a first plurality of warp 116 ends and the third end depicts the third yarn 106 woven into four wefts 114, then floating on the back (first side 120) of the heat-activated crimping textile 100 for eight wefts 114.
- the hatched yams represent the third yam 106 which interlaces into four wefts 114 and then floats on the back (first side 120) of the heat-activated crimping textile 100 for eight wefts 114.
- the first plurality of weft yams 114 which are all first yam 102 are all of the weft.
- fourth yarns 132 (having a heat-activated shrinkage factor of at least 30%) may be used in a second plurality of wefts 138 in place of some of the first yam 102, as best seen in FIG. 4, for example, which alternates between eight picks of first yarns 102 and four picks of fourth yam 132.
- the third yams 106 interlace the fourth yarns 132 and float across the second yarns 104.
- the third yarns 106 interlace primarily or only the fourth yams 132 and float across all or substantially all of the first yarns 102.
- “primarily” indicates more than 50% and “substantially all” indicates at more than 75%.
- the third yarn 106 pulls the first yam 102 and second yarn 104 regions together forming a crimp 108 which may be, but is not limited to, a pleat, a channel, or a ruffle, along the cross-machine direction 130 of the heat-activated crimping textile 100.
- a heat-activated crimping textile 100 includes a first plurality of wefts 114 formed of a first yarn 102, a first plurality of warps 116 formed of a second yarn 104 interwoven with the first plurality of wefts 114, and a second plurality of warps 118 formed of a third yarn 106 interwoven with the first plurality of wefts 114.
- the first yam 102 includes a heat- activated shrinkage factor of less than 10% when exposed to a predetermined temperature.
- the second yam 104 includes a heat-activated shrinkage factor of less than 10% when exposed to the predetermined temperature.
- the third yarn 106 includes a heat-activated shrinkage factor between 35% and 50% when exposed to the predetermined temperature.
- the predetermined temperature is at least 150 °C.
- a plurality of crimps 108 propagate along the first plurality of wefts 114, forming a crimped textile 110 having a pleated, ruffled, or channeled structure.
- the heat-activated crimping textile 100 includes a repeating weaving pattern in which the third yam 106 interlaces at least two of the first plurality of wefts 114 sequentially, then floats across a minimum of three of the first plurality of wefts 114 sequentially only across a first side 120 of the heat-activated crimping textile 100, and then repeats.
- the heat-activated crimping textile 100 and the crimped textile 110 formed from the heat-activated crimping textile 100 are substantially unsewn and substantially free of needle punctures and key holes.
- the heat-activated crimping textile 100 is a warp knit fabric 134
- the plurality of the first yarn 102 forms a first plurality of warps 116
- the plurality of the second yam 104 forms a second plurality of warps 118 interlaced with the first plurality of warps 116 by interloping
- the plurality of the third yarn 106 forms a third plurality of warps 136 interlaced with the first plurality of warps 116, the second plurality of warps 118, or both by interloping
- the plurality of crimps 108 propagates along the machine direction 128 of the warp knit fabric 134.
- the warp knit fabric 134 includes a repeating knit pattern in which the third plurality of warps 136 interloops amongst one to four warp ends of the first plurality of warps 116 and the second plurality of warps 118 combined sequentially, then floats across four to twenty courses sequentially of the first plurality of warps 116 and the second plurality of warps 118 combined, and then repeats.
- the third plurality of warps 136 interloops amongst one of the warp ends of the first plurality of warps 116 and the second plurality of warps 118 combined sequentially, then floats across 11 of the courses of the first plurality of warps 116 and the second plurality of warps 118 combined sequentially, and then repeats.
- a knitted ruffle post may be formed by heat setting in a similar fashion to the woven fabric 112 heat-activated crimping textile 100.
- stitch patterns to create a more linear machine direction 128 effect in a knit as opposed to creating long cross-machine direction 130 laps may keep at least portions of the third yam 106 floating behind first yam 102 and second yam 104 warp ends that are interlooping on the surface of the material, in essence creating a knitted ruffle in the course (cross-machine) direction 130.
- FIGS. 7 illustrates a 3-bar knit that uses a 1-0/1 -2// pattern (first yam 102) on guide bar 1 and a 1-2-/1-0// (second yam 104) on guide bar 2 and a long warp float (third yam 106) on guide bar 3 in a 1 -0/1-1/ (/l-l/l-l//x6) pattern.
- the third yam 106 forms the crimped effect of this pattern by shrinking in the first yam 102 and second yarn 104 layer and forming a ruffle as the crimp 108.
- the heat-activated crimping textile 100 is a warp knit fabric 134 in the form of a knitted tube 140.
- a top face 142 and a bottom face 144 are each knitted with a first yam 102, a second yarn 104, and a third yam 106, wherein the third yarn 106 is floated along the inside surface 146 of the knitted tube.
- Heat setting the knitted tube 140 forms radial pleats around the outside surface 148 of the knitted tube 140 with the third yam 106 remaining disposed along the inside surface 146 of the knitted tube 140.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Of Fabric (AREA)
- Treatment Of Fiber Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US202063089294P | 2020-10-08 | 2020-10-08 | |
PCT/US2021/053929 WO2022076659A1 (en) | 2020-10-08 | 2021-10-07 | Heat-activated crimping textile |
Publications (1)
Publication Number | Publication Date |
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EP4225980A1 true EP4225980A1 (de) | 2023-08-16 |
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ID=78463978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21801356.3A Pending EP4225980A1 (de) | 2020-10-08 | 2021-10-07 | Hitzeaktivierbare kräuseltextilie |
Country Status (4)
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US (1) | US20220112634A1 (de) |
EP (1) | EP4225980A1 (de) |
CN (1) | CN116457514A (de) |
WO (1) | WO2022076659A1 (de) |
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JPH01321948A (ja) * | 1988-03-15 | 1989-12-27 | Motomikurosu Kogyo Kk | クッション性織物 |
JP2673342B2 (ja) * | 1995-03-01 | 1997-11-05 | 織鶴タオル有限会社 | 織物地 |
JP4623856B2 (ja) * | 2001-04-05 | 2011-02-02 | 金野タオル株式会社 | タオル及びタオルマフラー |
JP5939782B2 (ja) * | 2011-12-13 | 2016-06-22 | 株式会社Shindo | 凹凸模様装飾帯体およびその製造方法 |
US11008676B2 (en) * | 2015-12-16 | 2021-05-18 | Edwards Lifesciences Corporation | Textured woven fabric for use in implantable bioprostheses |
-
2021
- 2021-10-07 US US17/496,170 patent/US20220112634A1/en active Pending
- 2021-10-07 EP EP21801356.3A patent/EP4225980A1/de active Pending
- 2021-10-07 WO PCT/US2021/053929 patent/WO2022076659A1/en active Application Filing
- 2021-10-07 CN CN202180069075.3A patent/CN116457514A/zh active Pending
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CN116457514A (zh) | 2023-07-18 |
US20220112634A1 (en) | 2022-04-14 |
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