Textiles and implantable medical devices using the same
A 3-D honeycomb textile can include a textured yarn. The textile can exhibit a heat-shrinkage rate from about 10% to about 60%. The textile can be configured to reversibly change its dimensions under application of stress. Prosthetic valves can have the disclosed textiles as a sealing member. Additionally, prosthetic valves can the disclosed textiles as cushion materials. In addition, methods of making the disclosed textiles and prosthetic valves are described.
1 . A textile defined by a first surface and an opposite second surface, having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length, and comprising:
a plurality of weft yarns and a plurality of warp yarns arranged such that at least a portion of the first surface and/or the second surface of the textile has a 3-D honeycomb pattern having a plurality of repeating cell units,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile has a first dimension in a relaxed position along the longitudinal axis, the transverse axis, and across of the textile, wherein the first dimension is defined by the first thickness, the first width, or the first length, and wherein the textile is configured to reversibly arrive at a second dimension under application of stress, wherein the second dimension is defined by a second thickness, a second width, or a second length, and return to the first dimension upon removal of stress, wherein the textile is bio-compatible; and wherein the textile exhibits a first stress-relaxation response.
2 . The textile of claim 1 , when the stress comprises stretching the textile in one or more directions along the longitudinal, the transverse axis, or across of the textile, the second dimension selected from the second length or width is greater than 0 to about 300% of the first dimension selected from the first length or width, as measured in a stretch direction.
3 . The textile of claim 1 , when the stress comprises compression across the first thickness of the textile, the textile exhibits compressibility of 50-95% of the first thickness under a loading force of from about 45 to about 56 lbs.
4 . The textile of claim 1 , wherein each yarn of the plurality of weft yarns and/or warp yarns has a size from about 10 to about 200 denier.
5 . The textile of claim 1 , wherein the textured yarn has a second stress-relaxation response.
6 . The textile of claim 5 , wherein the first stress-relaxation response is defined by first heat-set conditions of the textile and the second stress-relaxation response, wherein the second stress-relaxation response is defined by second heat-set conditions of the textured yarn.
7 . The textile of claim 6 , wherein the first and/or second heat-set conditions comprise a heat-set temperature from about 90° C. to about 220° C.
8 . The textile of claim 7 , wherein the first and/or second heat set conditions comprise a heat setting time from about 2 min to about 1 h.
9 . The textile of claim 1 , wherein the plurality of repeating cell units comprise from about 1 to about 30 cells per inch.
10 . The textile of claim 1 , wherein each of the plurality of repeating cell units comprises from about 8 to 40 pick repeats.
11 . A tissue scaffold material comprising the textile of claim 1 .
12 . An implantable medical device comprising:
an annular frame having an inflow end, an outflow end, and a longitudinal axis; and
a sealing element secured to the frame, wherein the sealing element comprises: a textile defined by a first surface and an opposite second surface, having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length, and comprising:
a plurality of weft yarns and a plurality of warp yarns arranged such that at least a portion of the first surface and/or the second surface of the textile has a 3-D honeycomb pattern having a plurality of repeating cell units,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile has a first dimension in a relaxed position along the longitudinal axis, the transverse axis, and across of the textile, wherein the first dimension is defined by the first thickness, the first width, or the first length, and wherein the textile is configured to reversibly arrive at a second dimension under application of stress, wherein the second dimension is defined by a second thickness, a second width, and/or a second length, and return to the first dimension upon removal of stress, wherein the textile is bio-compatible; and wherein the textile exhibits a first stress-relaxation response; and
wherein the implantable medical device is configured to radially collapse to a collapsed configuration and radially expand to an expanded configuration.
13 . An implantable medical device comprising:
a frame having an upper region, an intermediate region and a lower region, wherein the frame is configured to radially expand and contract for deployment within a body cavity, and wherein the frame comprises a plurality of anchoring members disposed along the lower region;
wherein at least a portion of at least some of the plurality of anchoring members is enclosed within a textile material, wherein the textile material is defined by a first surface and an opposite second surface, having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length, and comprising:
a plurality of weft yarns and a plurality of warp yarns arranged such that at least a portion of the first surface and/or the second surface of the textile has a 3-D honeycomb pattern having a plurality of repeating cell units,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile exhibits a first stress-relaxation response; and
wherein the textile material is biocompatible and behaves as a cushion, and exhibits compressibility of 50-95% of the first thickness under a loading force of from about 45 to about 56 lbs.
14 . The implantable medical device of claim 13 , wherein the frame comprises one or more struts, and wherein at least a portion of the one or more struts is enclosed within the textile material.
15 . The implantable medical device of claim 13 , wherein the first stress-relaxation response is defined by first heat-set conditions of the textile.
16 . A method comprising:
weaving a plurality of weft yarns and a plurality of warp yarns to form a textile, wherein the formed textile is defined by a first surface and an opposite second surface and having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length and wherein at least a portion of the first surface and/or the second surface has a 3-D honeycomb pattern having a plurality of repeating cell units,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile has a first dimension in a relaxed position along the longitudinal axis, the transverse axis, and across of the textile, wherein the first dimension is defined by the first thickness, the first width, or the first length, and wherein the textile is configured to reversibly arrive at a second dimension under application of stress, wherein the second dimension is defined by a second thickness, a second width, or a second length, and return to the first dimension upon removal of stress and wherein the textile is bio-compatible; and wherein the textile exhibits a first stress-relaxation response.
17 . The method of claim 16 , wherein the method comprises exposing the textile to conditions effective to obtain the first stress-relaxation response.
18 . The method of claim 17 , wherein the conditions effective to obtain the first stress-relaxation response comprise heat-setting the textile at a predetermined temperature and time.
19 . A method of making an implantable medical device comprising:
providing a sealing element comprising a textile material defined by a first surface and an opposite second surface and having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length, and comprising:
a plurality of weft yarns and a plurality of warp yarns arranged such that at least a portion of the first surface and/or the second surface of the textile has a 3-D honeycomb pattern having a plurality of repeating cell unit,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile has a first dimension in a relaxed position along the longitudinal axis, the transverse axis, and across of the textile, wherein the first dimension is defined by the first thickness, the first width, or the first length, and wherein the textile is configured to reversibly arrive at a second dimension under application of stress, wherein the second dimension is defined by a second thickness, a second width, or a second length, and return to the first dimension upon removal of stress and wherein the textile is bio-compatible; and
wherein the textile exhibits a first stress-relaxation response;
securing the sealing element to an annular frame of the implantable medical device.
20 . A method of making an implantable medical device comprising:
providing a self-expanding frame having an upper region, an intermediate region and a lower region, wherein the frame is configured to radially expand and contract for deployment within a body cavity, and wherein the self-expanding frame comprises a plurality of anchoring members disposed along the lower region;
enclosing at least a portion of at least some of the plurality of anchoring members within a textile material, wherein the textile material is defined by a first surface and an opposite second surface having a longitudinal axis and a transverse axis, and having a first thickness, a first width, and a first length and comprises:
a plurality of weft yarns and a plurality of warp yarns arranged such that at least a portion of the first surface and/or the second surface of the textile has a 3-D honeycomb pattern having a plurality of repeating cell units,
wherein at least one yarn of the plurality of warp yarns and/or the plurality of weft yarns is a textured yarn exhibiting a heat-shrinkage rate from about 10% to about 60%;
wherein the textile exhibits a first stress-relaxation response; and
wherein the textile material is biocompatible and behaves as a cushion, and exhibits compressibility of 50-95% of the first thickness under a loading force of from about 45 to about 56 lbs.