CN116457514A - Thermally activated crimped textile - Google Patents
Thermally activated crimped textile Download PDFInfo
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- CN116457514A CN116457514A CN202180069075.3A CN202180069075A CN116457514A CN 116457514 A CN116457514 A CN 116457514A CN 202180069075 A CN202180069075 A CN 202180069075A CN 116457514 A CN116457514 A CN 116457514A
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- textile
- crimped
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- 239000004753 textile Substances 0.000 title claims abstract description 153
- 230000008602 contraction Effects 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims description 16
- -1 polyethylene terephthalate Polymers 0.000 claims description 15
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 10
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001432 poly(L-lactide) Polymers 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 7
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 claims description 4
- 239000004677 Nylon Substances 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
- 229920001577 copolymer Polymers 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 15
- 239000010410 layer Substances 0.000 description 15
- 239000004744 fabric Substances 0.000 description 11
- 239000008280 blood Substances 0.000 description 9
- 210000004369 blood Anatomy 0.000 description 9
- 239000000835 fiber Substances 0.000 description 7
- 238000009940 knitting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 206010053567 Coagulopathies Diseases 0.000 description 5
- 230000035602 clotting Effects 0.000 description 5
- 238000003856 thermoforming Methods 0.000 description 5
- 238000009998 heat setting Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 210000002268 wool Anatomy 0.000 description 4
- 238000002788 crimping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 210000001765 aortic valve Anatomy 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
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- 238000002682 general surgery Methods 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- 210000003709 heart valve Anatomy 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010011086 Coronary artery occlusion Diseases 0.000 description 1
- 208000002223 abdominal aortic aneurysm Diseases 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 208000007474 aortic aneurysm Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
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- 210000004204 blood vessel Anatomy 0.000 description 1
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Classifications
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- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Of Fabric (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
A heat activated crimped textile (100) is disclosed that includes a plurality of first yarns (102), a plurality of second yarns (104) interwoven with the plurality of first yarns (102), and a plurality of third yarns (106) interwoven with the plurality of first yarns (102), the plurality of second yarns (104), or both. The third yarn (106) includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature. When the thermally activated, curled textile is exposed to a high temperature of at least a predetermined temperature, the plurality of curls (108) propagates along the thermally activated, curled textile forming a curled textile (110).
Description
RELATED APPLICATIONS
The present application claims the benefit and priority of U.S. provisional patent application No.62/089,294 entitled "Heat-Activated Crimping Textile" filed on 8/10/2020, which is incorporated herein by reference in its entirety.
Technical Field
The present application relates to heat activated crimped textiles. In particular, the present application relates to heat activated crimped textiles that include a portion of yarn having a greater coefficient of shrinkage than other yarns, a woven structure that facilitates crimping, or both.
Background
In recent years, transcatheter aortic valve replacement/repair ("TAVR") procedures have grown 30% per year, exceeding open surgical approaches. Challenges for TAVR include patient-prosthesis mismatch, coronary artery occlusion, post-implantation arrhythmia, stroke, and peri-implantation valve leakage. Significant aortic valve Zhou Fanliu ("AR") or perivalvular leak ("PVL") (moderate and severe) occurs in about 15-20% of TAVR cases, one of the most important prognostic factors for mortality during short-term 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 skirts (yarns) are currently made from warp knit needle pile fabrics that use loops to create the compressibility of the textile. These fabrics work well to create a soft, high volume filling between the transcatheter heart valve device and the natural anatomy, but have only their own coil yarn strength to create any toughness required to spring back from a compressed state.
The knitted fleece is not dense enough to form a blood vessel that is impermeable to blood (blood light) to accommodate blood flow. Instead, they rely on annular regions to create a tortuous path between the device and the vessel that allows clotting.
There is a desire in the art for an implantable textile that does not have the above-described drawbacks.
Disclosure of Invention
In one exemplary embodiment, a heat activated crimped textile comprises a plurality of first yarns, a plurality of second yarns interwoven with the plurality of first yarns, and a plurality of third yarns interwoven with the plurality of first yarns, the plurality of second yarns, or both. The third yarn includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature. When the heat activated, crimped textile is exposed to an elevated temperature of at least a predetermined temperature, the plurality of crimps propagate along the heat activated, crimped textile to form the crimped textile.
In another exemplary embodiment, a heat activated crimped textile comprises a first plurality of weft yarns formed from a first yarn, a first plurality of warp yarns formed from a second yarn interwoven with the first plurality of weft yarns, and a second plurality of warp yarns formed from a third yarn interwoven with the first plurality of weft yarns. The first yarn includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature. The second yarn includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature. The third yarn includes a heat activated coefficient of contraction between 35% and 50% upon exposure to a predetermined temperature. The predetermined temperature is at least 150 ℃. When the heat activated crimped textile is exposed to a high temperature of at least a predetermined temperature, a plurality of crimps propagate along the first plurality of weft yarns forming a crimped textile having a crimped, ruffled or grooved structure. The heat activated crimped textile comprises a repeating weave pattern wherein a third yarn sequentially interweaves at least two of the first plurality of weft yarns and then sequentially floats (float) over at least three of the first plurality of weft yarns only on a first side of the heat activated crimped textile and then repeats. The heat activated crimped textile and the crimped textile formed from the heat activated crimped textile are substantially seamless and substantially free of needlepunching and keyholes.
Drawings
Fig. 1 is a loom state (loomstate) diagram depicting a thermally activated crimped textile according to embodiments of the present disclosure.
Fig. 2 is a diagram of a woven textile after a thermoforming process, depicting a curled textile formed from the heat activated curled 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 embodiments of the present disclosure.
Fig. 4 is a plan view of the heat activated crimped textile of fig. 1 according to embodiments of the present disclosure.
Fig. 5 is a diagram of a woven textile having a groove or weave effect extending perpendicular to the pleats, according to an embodiment of the disclosure.
Fig. 6 is a plan view of a woven textile comprising a combination of single layer weave and crimped weave repeated in half drop (half drop) or brick layout to form a checkerboard pattern of folds/ruffles, according to embodiments of the present disclosure.
Fig. 7 is a knitting pattern of a warp knit according to an embodiment of the present disclosure.
Fig. 8 is a plan view of a warp knit formed according to the knit pattern of fig. 7 after heat-setting above a predetermined temperature in accordance with an embodiment of the present disclosure.
Fig. 9 is a front view of a portion of the warp knit of fig. 8 according to an embodiment of the present disclosure.
Fig. 10 is a knitting pattern of a knitted tubular fabric in accordance with an embodiment of the present disclosure.
Fig. 11 is a knitted tubular fabric formed according to the knitting pattern of fig. 10, in accordance with an embodiment of the present disclosure.
Fig. 12 is the knitted tubular fabric of fig. 11 after heat setting above a predetermined temperature in accordance with an embodiment of the present disclosure.
Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same parts. Hatching is used to indicate high shrinkage factor yarns.
Detailed Description
Embodiments of the present invention produce a textile product having a customized fold, ridge or hem designed with a specific weave pattern that bonds to a substrate to create raised areas that are elastic when compressed but that expand back to their thermoformed state when the compression is released. Embodiments of the present disclosure may provide the advantage that the textile can be deployed to fill spaces, such as when used to seal heart valve devices, the space between the device and the native tissue/vessel wall, and impart anti-migration properties to inhibit paravalvular leakage during deployment, as compared to textiles lacking one or more features of the present disclosure.
By creating a woven pleat or hem having not only the strength of one yarn, but also the strength of multiple yarns interwoven together, the textile may provide a stronger layer having greater elasticity, strength, and adjustable height differences between the layers forming the textile. Embodiments of the present disclosure may eliminate any stitching process that is typically required to create a fold/hem by using a combination of high shrink/low shrink yarns, a woven design, and a thermoforming process. When using the multi-faceted weave solution of the embodiments of the present disclosure, the fabric may be tuned to have regions that may be dense for a blood-impermeable barrier and more open porous regions for blood capture and clotting.
Referring to fig. 1-4 and 7, in one embodiment, the heat activated crimped textile 100 includes a plurality of first yarns 102, a plurality of second yarns 104 interwoven with the plurality of first yarns 102, and a plurality of third yarns 106 interwoven with the plurality of first yarns 102, the plurality of second yarns 104, or both. The third yarn 106 includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature. When the heat activated, crimped textile 100 is exposed to an elevated temperature of at least a predetermined temperature, the plurality of crimps 108 propagate along the heat activated, crimped textile 100 forming a crimped textile 110.
The third yarn 106 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to a heat activated coefficient of contraction of greater than 30%, or greater than 35%, or greater than 40%, or 35% to 50%, or 40% to 45%, or any subrange contained therein.
In one embodiment, the first yarn 102 includes a heat activated coefficient of contraction of less than 15% when exposed to a predetermined temperature and the second yarn 104 includes a heat activated coefficient of contraction of less than 15% when exposed to a predetermined temperature. The first yarn 102 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to less than 15%, or less than 10%, or from 5% to 9%, or from 6% to 8%, or 7%, or any subrange contained therein. The second yarn 104 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to less than 15%, or less than 10%, or from 5% to 9%, or from 6% to 8%, or 7%, or any subrange contained therein.
In another embodiment, to achieve the desired ruffled or pucker effect, the shrinkage factor of the third yarn 106 exceeds the maximum shrinkage factor of the first yarn 102 and the second yarn 104 by at least 30 points (e.g., if the first yarn 102 and the second yarn 104 have a 10% heat activated shrinkage factor, the third yarn 106 will have a heat activated shrinkage factor of at least 40%).
In another embodiment, the first yarn 102 includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature and the second yarn 104 includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature. The first yarn 102 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to a heat activated coefficient of contraction of greater than 30%, or greater than 35%, or greater than 40%, or 35% to 50%, or 40% to 45%, or any subrange contained therein. The second yarn 104 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to a heat activated coefficient of contraction of greater than 30%, or greater than 35%, or greater than 40%, or 35% to 50%, or 40% to 45%, or any subrange contained therein.
In another embodiment, the first yarn 102 includes a heat activated coefficient of contraction of less than 15% when exposed to a predetermined temperature and the second yarn 104 includes a heat activated coefficient of contraction of greater than 30% when exposed to a predetermined temperature. The first yarn 102 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to less than 15%, or less than 10%, or from 5% to 9%, or from 6% to 8%, or 7%, or any subrange contained therein. The second yarn 104 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to a heat activated coefficient of contraction of greater than 30%, or greater than 35%, or greater than 40%, or 35% to 50%, or 40% to 45%, or any subrange contained therein.
In another embodiment, the first yarn 102 includes a heat activated coefficient of contraction greater than 30% when exposed to a predetermined temperature and the second yarn 104 includes a heat activated coefficient of contraction less than 15% when exposed to a predetermined temperature. The first yarn 102 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to a heat activated coefficient of contraction of greater than 30%, or greater than 35%, or greater than 40%, or 35% to 50%, or 40% to 45%, or any subrange contained therein. The second yarn 104 may include any suitable heat activated coefficient of contraction upon exposure to a predetermined temperature, including but not limited to less than 15%, or less than 10%, or from 5% to 9%, or from 6% to 8%, or 7%, or any subrange contained therein.
Any of the first yarn 102, the second yarn 104, and the third yarn 106 may independently be flat, round, multi-lobed, textured, core and fancy yarns (core and effect yarn), or any combination thereof. Examples of core yarns and fancy yarns include, but are not limited to, chenille, pearl wool (boucle) and any other "fancy" yarn made by plying together a plurality of yarns or fibers while creating a textured effect on the outer surface of the yarn. For example, a pearl wool yarn may have an inner yarn of straight fibers with an outer surface wrapped with another bundle of fibers that produce a loop effect by twisting and winding the outer yarn to produce the desired texture effect. The core and fancy yarns may also be produced by overfeeding one set of fibers and under feeding another set of fibers such that the overfed set is twisted around the under fed set to form a textured yarn. Monofilament fibers may also be used, and in one embodiment, the addition of monofilament fibers increases the pleat elasticity.
The first and second yarns 102, 104 may be formed of any suitable material including, but not limited to, polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS) and Polycarbonate (PC), nylon, and bioabsorbable thermoplastics such as, but not limited to, polylactic acid (PLA), including poly (l-lactic acid) (PLLA), polycaprolactone (PCL), and polylactic-co-glycolic acid (PLGA), or combinations thereof. The first yarn 102 may be the same material (compositionally indistinguishable) as the second yarn 104, or may be a different material (compositionally different) than the second yarn 104. As used herein, "compositionally different" and "compositionally no difference" refer to chemical compositions, not structural compositions.
The third yarn 106 may be a high shrinkage yarn with a heat activated shrinkage factor greater than 30%, but may also be formed from similar materials to the first and second yarns, including but not limited to polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS) and Polycarbonate (PC), nylon, and bioabsorbable thermoplastics such as, but not limited to, polylactic acid (PLA), including poly (l-lactic acid) (PLLA), polycaprolactone (PCL), and polylactic acid-glycolic acid copolymer (PLGA), or combinations thereof. In one embodiment, to be suitable for use in a process according to an exemplary embodiment, the materials used for the first yarn 102, the second yarn 104, and the third yarn 106 are capable of withstanding the same overall thermal exposure, thereby avoiding melting or other undesirable decomposition or physical changes of the first yarn 102, the second yarn 104, and the third yarn 106. In addition to the materials from which the yarn is formed, the coefficient of shrinkage of the yarn may also be affected or controlled by the polymerization process, the extrusion process, or both. Thus, two yarns formed of the same material (chemical) may have significantly different shrinkage ranges.
For embodiments in which some or all of the first, second, or third yarns 102, 104, 106 are formed of PET, the predetermined temperature may be any suitable temperature including, but not limited to, at least 150 ℃, or at least 160 ℃, or at least 170 ℃, or at least 180 ℃, or at least 190 ℃, or at least 200 ℃, or at least 205 ℃, or any subrange or combination thereof. It should be appreciated that the predetermined temperatures of the yarns of the first yarn 102, the second yarn 104, and the third yarn 106 formed from PET may vary depending on the materials used and the heat activated shrinkage factor of the particular yarn used.
In one embodiment, third yarn 106 floats only on first side 120 of heat-activated crimped textile 100. In another embodiment, third yarns 106 float on both sides of heat activated crimped textile 100, which may form wrinkles on both sides (front and back) of heat activated crimped textile 100.
The curled textile 110 may have a pleated structure, a hemmed structure, a grooved structure, or a combination thereof. The pleats, ruffles, or grooves may have any suitable height, including, but not limited to, a height in the range of about 0.5mm to about 10mm, or about 0.5mm, or about 1mm, or about 2mm, or about 3mm, or about 4mm, or about 5mm, or about 6mm, or about 7mm, or about 8mm, or about 9mm, or about 10 mm. As used herein, "about" means that ±10% of the value is modified, and that the value is unmodified, such that "about" 1 includes a range of 0.9-1.1, or 1. In some embodiments, the height is in the range of about 0.5mm to about 4mm, or about 0.5mm to about 6mm, or about 1mm to about 5mm, or about 2mm to about 6mm, or about 4mm to about 8mm, or about 6mm to about 10mm, or any subrange or combination thereof.
The heat activated crimped textile 100 and the crimped textile formed from the heat activated crimped textile 100 may be substantially seamless and substantially needleless, substantially keyless, or a combination thereof. As used herein, "substantially free" excludes heat activated crimped textile 100 and edges of crimped textile 110 from up to but not exceeding 10% of the surface area of heat activated crimped textile 100 and crimped textile 110. In another embodiment, the heat activated crimped textile 100 and the crimped textile 110 formed from the activated crimped textile 100 are seamless, needleless, keyhole-free, or a combination thereof.
In one embodiment, when activated crimped textile 100 is heat-set to form crimped textile 110, as third yarn 106 shrinks, heat-activated crimped textile 100 is drawn together and bends first yarn 102 and second yarn 104 upward, second yarn 104 forming a pleat, hem, groove, or combination thereof.
This crimping effect may also be achieved by, for example, changing the position of the second yarn 104 to the third yarn 106 in an alternating pattern at each end (end). In such a pattern, it would be a drawn pattern (drawing patterning) of the first end of the second yarn 104, the second end of the third yarn 106, the third end of the second yarn 104, and the fourth end of the third yarn 106. As long as the ends of the third yarns 106 float on the first side 120 of the heat activated crimped textile 100 and the second yarns 104 are on the opposite side from the first side 120 of the first yarns 102, a hem may be formed during the thermoforming process.
In one embodiment, the curled textile 110 formed from the heat activated curled textile 100 is a medical implantable textile. In another embodiment, the medical implantable textile is a perivalvular skirt, a textile for abdominal aortic aneurysm, a textile for general surgery, or a combination thereof. The textile density may be adjusted depending on the application. For example, if in some applications, such as for general surgery, water/blood tightness is less important than thickness, a less dense, thinner or thicker fabric may be formed by varying the weave structure and count of the first yarn 102, the second yarn 104, the third yarn 106, or a combination thereof. In one embodiment, the crimped textile 110 formed from the heat-activated crimped textile 100 is configured to coagulate blood and seal and form a blood impermeable bottom layer during surgery.
In one embodiment, all yarn processing and knitting or both to form the heat activated crimped textile 100 is performed without treating or exposing the first yarn 102, the second yarn 104, and the third yarn 106 to temperatures above 40 ℃ in order to maintain the greatest possible shrinkage during thermoforming. If the refining is performed, the refining may be performed at ambient temperature.
The first, second, or third yarns 102, 104, 106 may include any suitable tensile strength and elongation, including, but not limited to, a tensile strength of about 4g/d to about 100g/d and an elongation of about 3% to about 30%, before the first, second, or third yarns 102, 104, 106 are processed by any optional twisting, rewinding, or warping.
Heat setting heat activated crimped textile 100 to form crimped textile 110 may include any suitable heat source and environment including, but not limited to, an oven, exposure to hot air, immersion in hot water, exposure to hot fluid vapor, a heated iron or clamp, or a combination thereof.
In one embodiment, by knitting the lower shrinkage yarn as the top surface of the multilayer structure and knitting the higher shrinkage yarn in the bottom region of the multilayer structure, the top surface may have a constant coverage while the higher shrinkage bottom will lose coverage as the material shrinks during thermoforming. By designing a critical junction between the top surface and the bottom region, the bottom region can physically pull the edge regions of the top surface toward each other.
In one embodiment, heat activated crimped textile 100 comprises at least one layer of fancy yarns, such as pearl wool, chenille, or other core yarns and fancy yarns that provide bulk and increased surface area for better sealing potential.
In another embodiment, the heat activated crimped textile 100 includes a bottom region having a more tightly woven pattern (such as, but not limited to, a plain weave) and another layer having a longer woven pattern (such as, but not limited to, a satin, rib, or twill weave) such that the longer float woven region can be looser and larger to maintain a dense bottom layer to have better clotting potential. In another embodiment, pocket structures in the outer layer for blood capture potential are incorporated into the heat activated crimped textile 100.
In another embodiment, the heat activated crimped textile 100 incorporates yarn fibrils that circumferentially cover and extend beyond the surface of the heat activated crimped textile 100. The yarn fibrils may be present in the first yarn 102, the second yarn 104, the third yarn 106, the optional fourth yarn 132, or a combination thereof.
In another embodiment, the method for forming the heat activated crimped textile 100 includes a texturing technique, such as, but not limited to, napping, applied to the surface of the heat activated crimped textile 100 (knitted or woven) to break the outer loops or floats resting on one side of the heat activated crimped textile 100.
Referring to fig. 1-4, in one embodiment, the heat activated, crimped textile 100 is a woven fabric 112, the first plurality of yarns 102 form a first plurality of weft yarns 114, the second plurality of yarns 104 form a first plurality of warp yarns 116 interwoven with the first plurality of weft yarns 114 by interlacing, the third plurality of yarns 106 form a second plurality of warp yarns 118 interwoven with the first plurality of weft yarns 114 by interlacing, and the plurality of crimps 108 propagate along the first plurality of weft yarns 114.
Woven fabric 112 may have any suitable repeating weave pattern including, but not limited to, a repeating weave pattern wherein third yarn 106 sequentially interweaves at least two, typically 3 to 5, of first plurality of weft yarns 114 and then sequentially floats over a minimum of 3, typically 4 to 20, of first plurality of weft yarns 114, then repeats interweaving and float (which may be the same or different in number than the previous interweaving and/or float). In another embodiment, the third yarn 106 sequentially interweaves 4 of the first plurality of weft yarns 114 and then sequentially floats over 8 of the first plurality of weft yarns 114 and then repeats.
When the heat activated crimped textile 100 is exposed to an elevated temperature of at least a predetermined temperature, the plurality of crimps 108 propagate along the first plurality of weft yarns 114 forming the crimped textile 110.
In addition to the second yarns 104 forming the first plurality of wefts 114, a high coefficient of shrinkage fourth yarn 132 having a heat activated coefficient of shrinkage greater than 30% may optionally be incorporated as the second plurality of wefts 138. Similar to third yarn 106, fourth yarn 132 may include any suitable heat-activated coefficient of contraction upon exposure to a predetermined temperature, including, but not limited to, a heat-activated coefficient of contraction greater than 30%, or greater than 35%, or greater than 40%, or from 35% to 50%, or from 40% to 45%, or any subrange contained therein. The fourth yarn 132 may be the same material and structure as the third yarn 106, different from the third yarn 106 in at least one of material or structure, or different from the third yarn 106 in both material and structure.
The heat activated crimped textile 100 may be woven on a jacquard, dobby, or hand loom into a multi-faceted plain or tubular structure. In one embodiment, the jacquard, dobby, or hand loom includes at least four heald frames (harnesses) for separating standard shrink yarn ends (heat activated shrink factor less than 15%) from high shrink yarn ends (heat activated shrink factor of at least 30%). Woven fabric 112 may be made from combination warp yarns with one half having a higher heat activated shrinkage factor than the other half.
During the weaving process, the third yarn 106 (or fourth yarn 132, if present) may be separated into different portions of the thermally activated crimped textile 100 by using multiple beams or by using a warping pattern that designates a specific area for either the first yarn 102 or the second yarn 104 that is opposite the third yarn 106 (or optional fourth yarn 132). Exemplary patterns include, but are not limited to, a pattern in which both ends of the third yarn 106 are then repeated with both ends of the second yarn 104. In some embodiments, for example, alternate warp yarn ends may be used for patterning (one second yarn 104 end, then one third yarn 106 end).
In one embodiment, woven fabric 112 includes at least one layer of fancy yarns, such as pearl wool, chenille, and other core yarns and fancy yarns that create bulk and increase surface area for better sealing potential.
In another embodiment, the woven fabric 112 includes a woven bottom having a more tightly woven pattern, such as but not limited to a plain weave, and an outer layer having a longer woven pattern, such as but not limited to satin, rib, or twill, which makes the longer float woven region looser and bulkier, thereby maintaining a tight bottom layer for better clotting potential. Another embodiment includes incorporating pocket structures into the outer layer for blood capture potential.
In one embodiment, the heat activated crimped textile 100 includes raised areas that form volumes and volumes protruding from the surface of the heat activated crimped textile 100 in the z-axis direction. The raised areas may be formed by forming pockets or forming pleats, or both, which perpendicularly protrude from the plane of the pleated fabric layer. Textured yarns may be incorporated into the pleats or folds to further increase surface area and texture. A wrinkled multi-layer shrink region may be formed wherein a bottom layer of high shrink yarns (heat activated shrink factor of at least 30%) is woven behind the low shrink yarns (heat activated shrink factor of less than 15%) region.
In another embodiment, raised areas are formed by creating pocket weave and inserting stuffer yarns (warp yarns, weft yarns, or both) into the pocket weave to fill the space and lift the areas of heat activated crimped textile 100. The grooves may be tied with a single cloth weave structure, thereby creating different thicknesses for the textile and valleys for reducing clotting, increasing compressibility of the heat activated crimped textile 100, improving the seal between the prosthetic device and the vessel wall, or a combination thereof. This embodiment may incorporate only yarns with a common coefficient of contraction (within 10% on an absolute basis) or may incorporate yarns with a higher coefficient of contraction than the remaining yarns (greater than 10% on an absolute basis). The raised areas may form a grid pattern.
Referring to fig. 5, in one embodiment, the heat activated crimped textile 100 includes a grooved or woven effect 122 extending perpendicular to the pleats 124, which creates a checkered effect that disrupts the length of the ruffled cavity, and which may create high and low regions of blood capture characteristics. The inclusion of the grooved or woven tube effect 122 extending perpendicular to the pleats 124 may maintain a higher degree of stretch in the heat activated crimped textile 100 relative to a comparative textile lacking the grooved or woven effect 122. Such a heat activated crimped textile 100 may have better elongation and stretch potential when rotated and cut at an angle of about 45 ° at the fabric bevel 126 than when cut in the machine direction 128 or cross-machine direction 130. Referring to fig. 6, in another embodiment, the heat activated crimped textile 100 includes a checkered effect 123 that is woven through the aforementioned grooves and repeated in a one-half drop or brick pattern using a combination of single layer weave and crimped weave to form the checkered effect 123 of the pleats 124 (or ruffles).
Referring to fig. 1 and 4, in one embodiment, the first yarn 102 is woven in one end of the first plurality of warp yarns 116 and the third end depicts the third yarn 106 woven into four weft yarns 114 and then float-woven over eight weft yarns 114 on the back (first side 120) of the heat activated, crimped textile 100. The cross hatching indicates the third yarn 106 which is interwoven into four weft yarns 114 and then float-woven over eight weft yarns 114 on the back side (first side 120) of the heat activated, crimped textile 100.
Optionally, in some embodiments, the first plurality of weft yarns 114, which are both first yarns 102, are all weft yarns. In other embodiments, fourth yarn 132 (having a heat activated shrinkage factor of at least 30%) may be used in second plurality of weft yarns 138 in place of some of first yarn 102, e.g., alternating between eight weft yarns of first yarn 102 and four weft yarns of fourth yarn 132, as best shown in fig. 4. In some embodiments, as shown in fig. 1-4, the third yarn 106 is interwoven with the fourth yarn 132 and floats over the second yarn 104. In some embodiments employing fourth yarn 132, third yarn 106 is interwoven primarily or exclusively with fourth yarn 132 and floats over all or substantially all of first yarn 102. As used herein, "predominantly" means more than 50%, while "substantially all" means more than 75%.
Referring to fig. 2 and 3, in another embodiment, after the heat-set transition, the third yarn 106 (backside warp) pulls the first yarn 102 and the second yarn 104 regions together, forming a crimp 108 along the cross-machine direction 130 of the heat-activated crimped textile 100, which crimp 108 may be, but is not limited to, a crimp, a groove, or a hem.
In one embodiment, heat activated crimped textile 100 includes a first plurality of weft yarns 114 formed from first yarns 102, a first plurality of warp yarns 116 formed from second yarns 104 interwoven with first plurality of weft yarns 114, and a second plurality of warp yarns 118 formed from third yarns 106 interwoven with first plurality of weft yarns 114. The first yarn 102 includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature. The second yarn 104 includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature. The third yarn 106 includes a heat activated coefficient of contraction between 35% and 50% when exposed to a predetermined temperature. The predetermined temperature is at least 150 ℃. When the heat activated crimped textile 100 is exposed to an elevated temperature of at least a predetermined temperature, the plurality of crimps 108 propagate along the first plurality of weft yarns 114 forming a crimped textile 110 having a crimped, ruffled, or grooved structure. The heat activated, crimped textile 100 comprises a repeating weave pattern in which third yarns 106 sequentially interweave at least two of the first plurality of weft yarns 114 and then float sequentially over at least three of the first plurality of weft yarns 114 only on the first side 120 of the heat activated, crimped textile 110 and then repeat. The heat activated crimped textile 100 and the crimped textile 110 formed from the heat activated crimped textile 100 are substantially seamless and substantially needleless and keyhole-free.
Referring to fig. 7-9, in one embodiment, the heat activated, crimped textile 100 is a warp knit 134, the first plurality of yarns 102 forms a first plurality of warp yarns 116, the second plurality of yarns 104 forms a second plurality of warp yarns 118 interwoven with the first plurality of warp yarns 116 by interconnecting loops, the third plurality of yarns 106 forms a third plurality of warp yarns 136 interwoven with the first plurality of warp yarns 116, the second plurality of warp yarns 118, or both by interconnecting loops, and the plurality of crimps 108 extend along the machine direction 128 of the warp knit 134.
In one embodiment, warp knit 134 comprises a repeating knit pattern wherein a third plurality of warp yarns 136 sequentially interconnect between one to four warp ends of the combined first plurality of warp yarns 116 and second plurality of warp yarns 118 in loops (interloop) and then sequentially float over four to twenty courses of the combined first plurality of warp yarns 116 and second plurality of warp yarns 118 and then repeat. In another embodiment, the third plurality of warp yarns 136 are sequentially interconnected in a loop between one warp yarn end of the combined first and second pluralities of warp yarns 116, 118, then sequentially float on 11 courses of the combined first and second pluralities of warp yarns 116, 118, and then repeat.
By intentionally placing the warp ends of third yarn 106 in combination with the warp ends of first yarn 102 and second yarn 104, a knitted crimp post (ruffle post) can be formed by heat setting in a similar manner as knitted fabric 112 heat-activated crimped textile 100. The use of the stitch pattern to create a more linear machine direction 128 effect in knitting may keep at least a portion of the third yarn 106 float behind the warp ends of the first yarn 102 and the second yarn 104, which warp ends of the first yarn 102 and the second yarn 104 are interconnected in loops on the surface of the material, creating a knit ruffle substantially in the course (cross-machine) direction 130, as opposed to creating a loop of the grown cross-machine direction 130. FIG. 7 shows a 3 bar knit using a 1-0/1-2// pattern (first yarn 102) on bar 1, a 1-2/1-0// (second yarn 104) on bar 2, a long warp float (third yarn 106) of a 1-0/1-1/(/ 1-1/1-1// x 6) pattern on bar 3. The third yarn 106 creates the crimp effect of the pattern by shrinking and forming a hem as crimp 108 in the layers of the first yarn 102 and the second yarn 104.
Referring to fig. 10-12, in one embodiment, heat activated crimped textile 100 is a warp knit 134 in the form of a knit tube 140. For knit tube 140, top surface 142 and bottom surface 144 are each knitted with first yarn 102, second yarn 104, and third yarn 106, wherein third yarn 106 floats along an inner surface 146 of the knit tube. The heat-set knit tube 140 forms radial folds around the outer surface 148 of the knit tube 140 with the third yarn 106 remaining disposed along the inner surface 146 of the knit tube 140. Fig. 10 shows the following knitted tubular stitch pattern: GB1 (1-2; 1-1/1-0;1-1) x6 and GB7 (1-1/1-2; 1-1; 1-0) x6 are the first yarn 102; GB2 (1-0;1-1/1-2; 1-1) x6 and GB6 (1-1; 1-0/1-1; 1-2) x6 are second yarns 104; GB3 1-0;1-1/1-1;1-1, (1-1; 1-1/1-1; 1-1) x5 and GB5 1-1;1-0/1-1;1-1, (1-1; 1-1/1-1; 1-1) x5 is the third yarn 106.
While the foregoing specification illustrates and describes exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (24)
1. A heat activated crimped textile comprising:
a plurality of first yarns;
a plurality of second yarns interwoven with the plurality of first yarns; and
a plurality of third yarns interwoven with the plurality of first yarns, the plurality of second yarns, or both,
wherein:
the third yarn comprises a heat activated coefficient of shrinkage greater than 30% when exposed to a predetermined temperature; and is also provided with
When the heat activated, crimped textile is exposed to an elevated temperature of at least a predetermined temperature, the plurality of crimps propagate along the heat activated, crimped textile to form the crimped textile.
2. The heat activated, crimped textile according to claim 1, wherein the first yarn comprises a heat activated shrinkage factor of less than 15% when exposed to a predetermined temperature and the second yarn comprises a heat activated shrinkage factor of less than 15% when exposed to a predetermined temperature.
3. The heat activated, crimped textile according to claim 2, wherein the first yarn comprises a heat activated shrinkage factor of less than 10% when exposed to a predetermined temperature.
4. The heat activated, crimped textile according to claim 2, wherein the second yarn comprises a heat activated shrinkage factor of less than 10% when exposed to a predetermined temperature.
5. The heat activated, crimped textile according to claim 2, wherein the third yarn comprises a heat activated coefficient of shrinkage of between 35% and 50% when exposed to a predetermined temperature.
6. The heat activated, crimped textile according to claim 1, wherein the first yarn comprises a heat activated shrinkage factor of greater than 30% when exposed to a predetermined temperature and the second yarn comprises a heat activated shrinkage factor of greater than 30% when exposed to a predetermined temperature.
7. The heat activated, crimped textile according to claim 1, wherein:
the heat activated crimped textile is a woven fabric;
the first plurality of yarns forms a first plurality of weft yarns;
the plurality of second yarns interweave to form a first plurality of warp yarns interweaving with the first plurality of weft yarns;
the third yarns interweave to form a second plurality of warp yarns interweaving with the first plurality of weft yarns; and is also provided with
The plurality of crimps propagate along the first plurality of weft yarns.
8. The heat activated, crimped textile according to claim 7, further comprising a second plurality of weft yarns comprising a fourth yarn having a heat activated shrinkage factor of greater than 30% when exposed to a predetermined temperature.
9. The heat activated, crimped textile according to claim 7, wherein the woven fabric comprises a repeated weave pattern wherein the second plurality of weft yarns sequentially interweaves 3-5 of the first plurality of weft yarns and then floats on 4-20 of the first plurality of weft yarns and then repeats.
10. The heat activated, crimped textile according to claim 9, wherein the second plurality of weft yarns are sequentially interwoven between 4 of the first plurality of weft yarns and then sequentially float woven over 8 of the first plurality of weft yarns and then repeat.
11. The heat activated, crimped textile according to claim 1, wherein:
the heat activated crimped textile is a warp knit;
the first plurality of yarns forms a first plurality of warp yarns;
forming a second plurality of warp yarns interwoven with the first plurality of warp yarns by interconnecting the plurality of second yarns into loops;
forming a third plurality of warp yarns interwoven with the first plurality of warp yarns, the second plurality of warp yarns, or both by interconnecting the plurality of third yarns into loops; and is also provided with
The plurality of curls propagate along the machine direction of the warp knit.
12. The heat activated, curled textile according to claim 11 wherein the warp knit comprises a repeating knit pattern wherein the third plurality of warp yarns are sequentially interconnected in loops between 1-4 warp ends of the combined first and second plurality of warp yarns and then sequentially float over 4-20 courses of the combined first and second plurality of warp yarns and then repeat.
13. The heat activated, crimped textile according to claim 12, wherein the third plurality of warp yarns are sequentially interconnected in a loop between one warp end of the combined first and second plurality of warp yarns, then sequentially float over 11 courses of the combined first and second plurality of warp yarns, then repeat.
14. The heat activated, crimped textile according to claim 12, wherein the third yarn floats only on a first side of the heat activated, crimped textile.
15. The heat activated, crimped textile according to claim 1, wherein the first yarn and the second yarn are compositionally different from each other.
16. The heat activated, crimped textile according to claim 1, wherein the first yarn and the second yarn are compositionally indistinguishable from each other.
17. The heat activated, crimped textile according to claim 1, wherein the first and second yarns are formed from a material independently selected from the group consisting of: polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), nylon, polylactic acid (PLA), poly (l-lactic acid) (PLLA), polycaprolactone (PCL), polylactic acid-glycolic acid copolymers (PLGA), and combinations thereof.
18. The heat activated, crimped textile according to claim 1, wherein the third yarn is formed from a material selected from the group consisting of: polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polycarbonate (PC), nylon, polylactic acid (PLA), poly (l-lactic acid) (PLLA), polycaprolactone (PCL), polylactic acid-glycolic acid copolymers (PLGA), and combinations thereof.
19. The heat activated, crimped textile according to claim 1, wherein the crimped textile has a pleated structure, a ruffled structure, a fluted structure, or a combination thereof.
20. The heat activated, curled textile of claim 1 wherein the heat activated, curled textile and the curled textile formed from the heat activated, curled textile are substantially seamless.
21. The heat activated, curled textile according to claim 1 wherein the heat activated, curled textile and curled textile formed from the heat activated, curled textile are substantially free of needle punching and key holes.
22. A medical implantable textile formed from the heat activated crimped textile according to claim 1.
23. The medical implantable textile according to claim 18, wherein the medical implantable textile is a perivalvular skirt.
24. A heat activated crimped textile comprising:
a first plurality of weft yarns formed from a first yarn;
a first plurality of warp yarns formed from a second yarn interwoven with the first plurality of weft yarns; and
a second plurality of warp yarns formed from a third yarn interwoven with the first plurality of weft yarns,
wherein:
the first yarn includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature;
the second yarn includes a heat activated coefficient of contraction of less than 10% when exposed to a predetermined temperature;
the third yarn comprises a heat activated coefficient of shrinkage between 35% and 50% upon exposure to a predetermined temperature;
the predetermined temperature is at least 150 ℃;
when the heat activated crimped textile is exposed to a high temperature of at least a predetermined temperature, the plurality of crimps propagate along the first plurality of weft yarns forming a crimped textile having a crimped, ruffled, or grooved structure;
the heat activated, crimped textile comprises a repeating weave pattern wherein a third yarn sequentially interweaves at least 2 of the first plurality of weft yarns and then sequentially floats over at least 3 of the first plurality of weft yarns only on a first side of the heat activated, crimped textile and then repeats; and the heat activated crimped textile and the crimped textile formed from the heat activated crimped textile are substantially seamless and substantially free of needlepunching and keyhole.
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| US202063089294P | 2020-10-08 | 2020-10-08 | |
| US63/089,294 | 2020-10-08 | ||
| PCT/US2021/053929 WO2022076659A1 (en) | 2020-10-08 | 2021-10-07 | Heat-activated crimping textile |
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| CN116457514A true CN116457514A (en) | 2023-07-18 |
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| CN202180069075.3A Pending CN116457514A (en) | 2020-10-08 | 2021-10-07 | Thermally activated crimped textile |
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| US (1) | US20220112634A1 (en) |
| EP (1) | EP4225980A1 (en) |
| CN (1) | CN116457514A (en) |
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| US2627644A (en) * | 1950-06-24 | 1953-02-10 | Us Rubber Co | Single-ply corrugated fabric and method of making the same |
| US3071165A (en) * | 1957-08-14 | 1963-01-01 | Us Rubber Co | Shrinkable fabric |
| US3359610A (en) * | 1963-12-17 | 1967-12-26 | Deering Milliken Res Corp | Woven fabrics |
| JPH01321948A (en) * | 1988-03-15 | 1989-12-27 | Motomikurosu Kogyo Kk | Cushiony fabric |
| JP2673342B2 (en) * | 1995-03-01 | 1997-11-05 | 織鶴タオル有限会社 | Woven fabric |
| JP4623856B2 (en) * | 2001-04-05 | 2011-02-02 | 金野タオル株式会社 | Towel and towel muffler |
| BE1015508A3 (en) * | 2003-05-08 | 2005-05-03 | Svensson Ludvig Bv | Cloth intended to provide at least one permanent fold and method applied thereby. |
| WO2011090845A1 (en) * | 2010-01-19 | 2011-07-28 | Mmi-Ipco, Llc | Composite textile fabrics |
| JP5939782B2 (en) * | 2011-12-13 | 2016-06-22 | 株式会社Shindo | Irregular pattern decorative strip and method for producing the same |
| US11008676B2 (en) * | 2015-12-16 | 2021-05-18 | Edwards Lifesciences Corporation | Textured woven fabric for use in implantable bioprostheses |
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- 2021-10-07 US US17/496,170 patent/US20220112634A1/en active Pending
- 2021-10-07 CN CN202180069075.3A patent/CN116457514A/en active Pending
- 2021-10-07 EP EP21801356.3A patent/EP4225980A1/en active Pending
- 2021-10-07 WO PCT/US2021/053929 patent/WO2022076659A1/en active Application Filing
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| EP4225980A1 (en) | 2023-08-16 |
| WO2022076659A1 (en) | 2022-04-14 |
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