JP2016518533A - Improved fabric with reinforced interlace - Google Patents

Abstract

A fabric having a first fabric portion comprising first fabric pores made by first yarn interlacing in a first pattern and having a first average pore size. The fabric also includes a second fabric portion including second fabric pores made by a second yarn interlacing in a second pattern and having a second average pore size. The number of the first yarn interlacing is greater than the number of the second yarn interlacing. The first fabric provides strength to the second fabric. The first fabric pattern is designed to alleviate loosening of the second pore yarn when the second pore yarn is broken. [Selection] Figure 1D

Description

  Embodiments described herein relate to a fabric having a reinforced interlace and at least two different average pore sizes made by at least two different stitching or weaving patterns.

  Medical textiles are used in numerous applications for external applications, as well as both internal and transplant applications. Today, with advances in technology and increased health care costs, more medical and surgical procedures are being performed using minimally invasive techniques. This includes the use of an endoscope or the like to view, examine, and perform surgical procedures on the patient within the parameters of an endoscope or other minimally invasive instrument.

  In such applications, minimally invasive procedures require treatment instruments and other components that are capable of large compression. This is to allow the component to move through the catheter to the treatment site. In addition, the component must be designed to be unwound or otherwise decompressed to its original state to function as designed once it reaches a predetermined position.

  In this regard, many components of minimally invasive procedures are specially adapted to meet the needs of the particular procedure or instrument used for a given purpose. For example, in one diagnostic procedure, a capture device is used to enclose a tissue sample, and the encapsulated tissue sample is analyzed by the surgeon once it is retrieved from the body. In all cases, the material must be very light and relatively thin, or be able to be compressed into a thin profile for movement through the catheter. In addition, the components must be strong enough to function as designed so that their light weight does not reduce their integrity. These two properties are difficult to design so that each compromises the other. Fabrics designed to be strong are typically heavy and bulky. Conversely, fabrics that are light in weight and can be thinly contoured for movement through a catheter are typically not strong and do not withstand well under tension.

  For materials and textile components used in minimally invasive applications, another problem is structural loosening or fraying. This is especially true for very open meshes or nets. It is not desirable to have loose threads or loosen the fabric. Loose threads may block passages, for example in applications involving arterial or venous repair. In addition, loosening of textile components can degrade structural integrity and ultimately the function of the component or device.

  One patent addresses the fraying or loosening problem in US Pat. No. 5,456,711 entitled “Warped knitted Carotid Patch Having Finished Selvage Edges”. This patent eliminates the need for cutting by providing a finished edge on a knitted mesh patch of a given width, thus eliminating fraying or loosening problems.

  Provides a lightweight fabric that functions as designed and can take a thin profile for moving through the catheter while maintaining the level of strength necessary to prevent fraying or loosening of the yarn It is desirable. The fraying term described in this application refers to a more concentrated interlacing or knot area that absorbs tension from a less concentrated interlacing or knot area and reduces the potential risk of loosening or unraveling seams. Mention the capacity of the fabric in

  Furthermore, it is desirable to provide a fabric that can be cut for manufacturing purposes and used in a minimally invasive procedure that can reduce the potential risk of fraying or fraying.

  Embodiments described herein relate to a fabric having a first fabric portion that includes first fabric pores that are made by a first yarn interlacing in a first pattern and that have a first average pore size. The fabric further includes a second fabric portion including second fabric pores made by a second yarn interlacing in a second pattern and having a second average pore size. The number of the first yarn interlacing is greater than the number of the second yarn interlacing. The first yarn interlacing increases the strength of the second yarn interlacing and reduces the potential risk of fraying.

  The fabric of the embodiments described herein has a configuration in which the first fabric portion can surround the second fabric portion.

  The fabric of the embodiments described herein may have a difference in average pore size between the first fabric portion and the second fabric portion, the difference being at least 100%.

  The fabric of the embodiments described herein may have a weight difference between the first fabric portion and the second fabric portion, the difference being at least 50%.

  The fabric of the embodiments described herein may have a thickness difference between the first fabric portion and the second fabric portion, the difference being at least 10%.

  The fabric of the embodiments described herein may have a burst strength difference between the first fabric portion and the second fabric portion, the difference being at least 50%.

  The fabric of the embodiments described herein may have a difference in the number of interlacing between the first fabric portion and the second fabric portion, wherein the number of the first yarn interlacing is the second yarn. At least 50% more than the number of interlacing.

  The fabric of the embodiments described herein may have a percentage difference in open area between the first fabric portion and the second fabric portion, wherein the percentage of open area in the first fabric portion is the first fabric portion. It should be about 7% smaller than the percentage of open area of the two fabric parts.

The fabrics of the embodiments described herein may be knitted or woven. Embodiments described herein further create a first fabric portion that includes first fabric pores made with a first yarn interlacing in a first pattern and having a first average pore size,
A second pattern is formed by second yarn interlacing in a second pattern and includes second fabric pores having a second average pore size, wherein the number of the first yarn interlacing is determined by the second yarn interlacing. More than the number of lacings, whereby the first yarn interlacing provides a method of making a reinforced mesh fabric that increases the strength of the second yarn interlacing and reduces the potential risk of fraying.

  Objects, features, and advantages of the embodiments described herein will become more apparent when the following detailed description is read in conjunction with the drawings and the claims.

It is a front view of the fabric of 1st Embodiment. FIG. 1B is a reduced view of the embodiment of FIG. 1A. FIG. 1B is an enlarged view of the embodiment of FIG. 1A. It is the schematic of FIG. 1C. 1B is an enlarged view of FIG. 1A at the boundary between the first pore and the second pore along the lateral direction. FIG. 1E is a schematic view of FIG. 1E. FIG. 1B is an enlarged view of FIG. 1A at the boundary between the first pore and the second pore along the vertical direction. It is the schematic of FIG. 1G. It is an enlarged view of a typical first pore. It is an enlarged view of a typical 2nd pore. It is a front view of 2nd Embodiment. FIG. 4 is a diagram of a threading layout for the embodiment of FIG. FIG. 4 is a diagram of guide bar movement for the embodiment of FIG. 3. FIG. 4 is an enlarged view of FIG. 3. It is a front view of 3rd Embodiment. It is a front view of 4th Embodiment.

  Referring to the drawings, wherein like numerals indicate like parts throughout the several views, FIG. 1A shows a first embodiment 10 of a first portion 12 and a second portion 14. The first embodiment is a knitted mesh made of a person filament PET yarn. The first portion 12 is made using a first sewing pattern and forms a first pore 16. The second portion 14 is formed by using a second sewing pattern and forms a second pore 18.

The specific sewing pattern used for the first embodiment 10 is shown as follows.

Information bar 1 = (2-1 / 1-2 / 2-10 / 1-2 / 2-2 / 2-3) x17 (2-1 / 1-0 / 1-3) x12

Guide bar 2 = (1-2 / 2-1 / 1-3 / 2-1 / 1-2 / 2-1 / 1-0) x17 (1-2 / 2-3 / 2-1 / 1-0 ) x12

Information bar 3 = (2-1 / 1-0 / 1-2 / 2-3) x46

Guide bar 4 = (1-2 / 2-3 / 2-1 / 1-0) x46

  It should be noted that any number of sewing patterns can be used to make the fabric described herein, and the above sewing patterns are not intended to limit the scope of the embodiments in any way. Should. As those skilled in the art will appreciate, the fabric can be made by changing the sewing pattern, where the dimensions may need to be changed, but the function of the fabric remains substantially the same. FIG. 1B is a reduced view of the first embodiment 10 and shows the first portion 12 and the second portion 14. FIG. 1C is a further enlarged view of the first embodiment, and particularly shows a corner where the first portion 12 and the second portion 12 meet at the boundary. FIG. 1D is a diagram made with the computer of FIG. 1C. FIG. 1E is an enlarged view of the first embodiment 10 at the boundary between the first portion 12 and the second portion 14 along the lateral direction. FIG. 1F is a diagram made with the computer of FIG. 1E. FIG. 1G is an enlarged view of the first embodiment at the boundary between the first portion 12 and the second portion 14 along the vertical direction. FIG. 1H is a diagram made with the computer of FIG. 1G.

  Generally, a pore is defined as an opening made between mesh knitted pillars. Each pillar consists of a loop formed by one needle. The space between the yarns in each knitted pillar is not considered a pore of the formed mesh described in this application. FIG. 2A shows a representative first pore 16 formed by interlacing the first knitted pillar 20 of the first embodiment. FIG. 2B shows a representative second pore 18 formed by interlacing the second knitted pillar 22 of the first embodiment. As shown in FIG. 1, the first portion 12 surrounds the second portion 14 as indicated by the boundary 15. The first portion 12 is made to reinforce the second portion 14 by using reinforcing interlaces that work against each other to support the second portion 14 by providing an additional point in the portion where the yarn and yarn interlace. Encapsulate. The first portion 12 of the additional interlace mitigates or prevents fraying by absorbing the cut thread or end and prevents further fraying by absorbing tension within the interlacing points or nodes. Prevent further fraying of the ends of the warp.

  The first portion 12 has a greater density than the second portion 14 because the first pores 16 are smaller and the number of interlacings across the fixed region is greater. In the first embodiment 10, the number of interlacings in the first portion 12 is about 26 per inch (25.4 mm), whereas the number of interlacings in the second portion is 1 inch (25.4 mm). ) About 14 per one). Therefore, the first portion 12 has a greater weight than the second portion 14.

Several tests were performed on the first embodiment. The results are shown in Table A below.

Table C below provides elongation data for the first portion 12 and the second portion 14 of the first embodiment 10 in pounds (1 lb = 0.435 kg) versus elongation. As can be seen in the graph, the first part maintains its integrity in the tensile state for a longer period of time for a constant rate compared to the second part.

  The second embodiment 24 provides a different sewing pattern as shown in FIG. The second embodiment 24 has a first portion having a first pore 27 and a second portion 28 having a second pore 29.

The sewing pattern employed to make the second embodiment is as follows.

Information bar 1 = (1-0 / 0-1 / 1-0 / 0-1 / 1-2 / 2-1 / 1-2 / 2-1) x3 //

Information bar 2 = 0-1 / 1-2 / 2-3 / 3-4 / 4-5 / 5-6 / 6-7 / 7-8 / 8-7 / 7-8 / 8-7 / 7- 6 / 6-5 / 5-4 / 4-3 / 3-2 / 2-1 / 1-0 / 0-1 / 1-0 / 0-1 / 1-0 //

Information bar 3 = 8-7 / 7-6 / 6-5 / 5-4 / 4-3 / 3-2 / 2-1 / 1-0 / 0-1 / 1-0 / 0-1 / 1- 0 / 0-1 / 1-2 / 2-3 / 3-4 / 4-55-6 / 6-7 / 7-8 / 8-7 / 7-8 / 8-7 / 7-8 //

  FIG. 4 is a diagram of a threading layout according to the second embodiment.

  FIG. 5 is a diagram of guide bar movement according to the second embodiment 24. Finally, FIG. 6 is an enlarged view of the second embodiment 24 showing the first portion 26 and the second portion 28 in more detail. The first portion 26 has a smaller pore size and a greater number of interlaces or nodes than the second portion 28. The second part has less interlace than the first part and has a larger pore size.

  Regions with more interlaces or nodes can also act as a visual or tactile aid at the boundary between regions where the number of nodes changes. In production applications, this boundary helps an operator to efficiently or effectively mount a piece of fabric on a frame or device, producing a higher quality product.

  The use of more nodes as a visual and / or tactile aid can be incorporated into all aspects of fabrication when fabrics with fewer nodes or fewer interlaces are steered on a frame or other device. A reinforced region with more nodes will help provide visual guidance to a person passing the fabric over a wire or tube. The higher interlacing area provides visual guidance to the operator to ensure that the pores are correctly threaded and thus the product quality is higher.

  Changes in the number of interlaces at a particular location in a given fabric can also provide a visual aid to ensure that regions of lower density are correctly oriented. The surgeon can see or feel the fabric and the pattern can determine whether the mesh is correctly oriented. When the mesh is correctly oriented, the success rate of the treatment is increased, thus improving the patient's quality of life.

  The fabrics described herein are applicable to both woven and knitted fabrics. For knitted fabrics, different sewing patterns can be used as required by the application. Sewing pattern and density have a strong impact on strength, pore size, stability, and stretch knitted mesh quality. If such properties need to be changed, the sewing pattern and / or density is changed.

  6 and 7 show third and fourth embodiments in a woven structure. FIG. 6 discloses a third embodiment 30 having a first portion 32 having a denser weave and more interlacing and nodes. The second portion 34 of the third embodiment 30 has a larger open weave with fewer interlaces and nodes. The first portion 32 of the third embodiment 30 has a 1,1 weave, and the second portion 34 has a 2,2 weave. FIG. 6 also shows the weave pattern of both the first portion 32 and the second portion 34.

  FIG. 7 is another example of a weave embodiment and provides an illustration of a fourth embodiment having a first portion 38 having a denser weave surrounding a larger open weave second portion 40. As can be seen from FIG. 7, the boundary between the first portion 38 and the second portion 40 is circular, but can be designed as desired to support the needs and functions of the fabric. A woven pattern of the first portion 38 and the second portion 40 is also provided. The first portion 32 of the fourth embodiment has a 1,1 weave, and the second portion 34 has a 4,4 weave.

  Another application of this embodiment is to create a fabric scaffold for intracellular growth. It is understood that intracellular growth can be promoted by constructing fabrics of various pore sizes. As a result, the fabric scaffold, and thus the location on or within the fabric scaffold, can be designed such that the dimensions promote special cell growth.

  It should also be understood that the knitting patterns shown herein are straight in shape and have a straight length and width. However, Applicants anticipate that the above-described embodiments could also be made by knitting to the desired dimensions or width of a particular application. For example, if the resulting piece wants to have a diamond shape, the shape can be achieved by either cutting the shape into a sheet-like fabric or knitting the piece into the desired shape. Can do. If the pieces are knitted, the knitting pattern will need to include a tapered portion to create a diamond. It will be appreciated that any number of straight or curved shapes can be achieved, and that the rhombus is an example and is not intended to limit the scope of the embodiments described herein in any way.

  Applicants are aware that there is at least one alternative way of making the embodiments disclosed herein. Instead of changing the sewing pattern to make fabrics with various numbers of interlacing, an alternative method is to tension the area of fewer nodes and then heat the fabric. The tensioned region maintains its density while the remaining fabric shrinks or retracts, thus creating a greater number of nodes or interlaces. This method can be applied to the various embodiments described above.

  As used herein, the singular forms “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise. Thus, for example, “a yarn” or “a pore” means a single yarn or a single pore, or means two or more yarns or pores. Intended. Furthermore, the use within the specification of terms such as “upper”, “lower”, “vertical”, “horizontal”, etc., describes the structure and function of the portions of the embodiments described herein with respect to each other. It is a convenience word used for and is not meant to be construed as a limiting term in any way.

12, 26, 32, 38 First part 14, 28, 34, 40 Second part 16, 27 First pore 18, 29 Second pore

Embodiments described herein relate to a fabric having a reinforced interlace and at least two different average pore sizes made by at least two different stitching or weaving patterns. A boundary is created where the node spacing changes. Reinforced interlace reinforces larger pores in the interlace and helps reduce the potential risk of fraying or fraying.

Embodiments described herein relate to a fabric having a first fabric portion that includes a first fabric pore made of a first pattern of yarns in a first pattern and having a first average pore size. The fabric further includes a second fabric portion including second fabric pores made by a second yarn interlacing in a second pattern and having a second average pore size. The number of first interlacing of the yarn is greater than the number of second interlacing of the yarn . The first yarn interlacing increases the integrity of the second fabric portion and reduces the potential risk of fraying.

The fabric of the embodiments described herein may have a difference in the number of interlacings between the first fabric portion and the second fabric portion, the number of the first interlacing being the second interlacing. At least 50% more than the number of

The fabrics of the embodiments described herein may be knitted or woven. Embodiments described herein further create a first fabric portion that includes first fabric pores having a first average pore size made by a first interlacing of yarns in a first pattern, and in a second pattern Creating a second fabric portion made by a second interlacing of the yarn and comprising a second fabric pore having a second average pore size, wherein the number of first interlacing of the yarn is the second interlacing of the yarn A method of making a reinforced mesh fabric that is greater than the number of

7 and 8 show third and fourth embodiments in a woven structure. FIG. 7 discloses a third embodiment 30 having a first portion 32 with a denser weave and more interlacing and nodes. The second portion 34 of the third embodiment 30 has a larger open weave with fewer interlaces and nodes. The first portion 32 of the third embodiment 30 has a 1,1 weave, and the second portion 34 has a 2,2 weave. FIG. 6 also shows the weave pattern of both the first portion 32 and the second portion 34.

FIG. 8 is another example 36 of a weave embodiment and provides a view of a fourth embodiment having a first portion 38 having a denser weave surrounding a larger open weave second portion 40. As can be seen from FIG. 8 , the boundary between the first portion 38 and the second portion 40 is circular, but can be designed as desired to support the needs and functions of the fabric. A woven pattern of the first portion 38 and the second portion 40 is also provided. The first portion 32 of the fourth embodiment 36 has a 1,1 weave and the second portion 34 has a 4,4 weave.

Claims (20)

A first fabric portion comprising first fabric pores made by first yarn interlacing in a first pattern and having a first average pore size;
A second fabric portion including second fabric pores made by second yarn interlacing in a second pattern and having a second average pore size, wherein the number of the first yarn interlacing is the second yarn More than the number of interlacing,
Further comprising a boundary created between the first fabric portion and the second fabric portion;
The first yarn interlacing increases the strength of the second yarn interlacing and reduces the potential risk of fraying.   The fabric of claim 1, wherein the first fabric portion surrounds the second fabric portion.   The fabric of claim 1, wherein the first average pore size is at least 100% less than the second average pore size.   The fabric of claim 1, wherein the fabric is at least 50% greater than a weight of the first fabric portion.   The fabric of claim 1, wherein the thickness of the first fabric portion is at least 10% greater than the thickness of the second fabric portion.   The fabric of claim 1, wherein the burst strength of the first fabric portion is at least 50% greater than the burst strength of the second fabric portion.   The fabric of claim 1, wherein the number of first yarn interlacing is at least 50% greater than the number of second yarn interlacing.   The fabric of claim 1, wherein the percentage of open area of the first fabric portion is about 7% less than the percentage of open area of the second fabric portion.   The fabric of claim 1, wherein the fabric is knitted.   The fabric of claim 1, wherein the fabric is a woven fabric. Creating a first fabric portion comprising first fabric pores made by first yarn interlacing in a first pattern and having a first average pore size;
A second pattern is formed by second yarn interlacing in a second pattern and includes second fabric pores having a second average pore size, wherein the number of the first yarn interlacing is determined by the second yarn interlacing. More than the number of racing,
A method of making a reinforced mesh fabric whereby the first yarn interlacing increases the strength of the second yarn interlacing and reduces the potential risk of fraying.   The method of claim 11, wherein the first fabric portion surrounds the second fabric portion.   The method of claim 11, wherein the first average pore size is at least 100% less than the second average pore size.   12. The method of claim 11, wherein the method is at least 50% greater than the weight of the first fabric portion.   The method of claim 11, wherein the thickness of the first fabric portion is at least 10% greater than the thickness of the second fabric portion.   The method of claim 11, wherein the burst strength of the first fabric portion is at least 50% greater than the burst strength of the second fabric portion.   The method of claim 11, wherein the number of first yarn interlacing is at least 50% greater than the number of second yarn interlacing.   The method of claim 11, wherein the percentage of open area of the first fabric portion is about 7% less than the percentage of open area of the second fabric portion.   The method of claim 11, wherein the fabric is knitted.   The method of claim 11, wherein the fabric is a woven fabric.

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