Knitted prosthetic lining textile with differentiated knitted fabric exterior incorporating low-extensibility strips

Abstract

A prosthetic liner has a lower longitudinal extensibility in a distal region than in a proximal region, or optionally an intermediate region. The distal end region may have a vertical extension between 0-30% and a horizontal extension between 10-200%, while in contrast, the proximal end region has a vertical extension between 55-125% and a horizontal extension between 100-175%. The extensibility of the lining in each pressure sensitive area of the stump can also be reduced or improved according to the area. A variety of stitches may be used at the distal end to achieve this reduced longitudinal extensibility. Preferably, the liner is made of a stretchable material. The liner also has an inner layer of elastomeric gel. The design of the prosthesis lining is mainly used for preventing piston movement of the residual limb of the amputee in the lining and improving the comfort level of a pressure sensitive area of the residual limb.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Application No. 18 / 208,289, filed June 11, 2023, entitled "Knitted Prosthetic Lining Textile with Differentiated Knitted Fabric Exterior Combined with Low-Stretch Strips," which is a partial continuation of U.S. Application No. 17 / 181,110, filed February 22, 2021, entitled "Knitted Prosthetic Lining Textile with Differentiated Knitted Fabric Exterior," which in turn is a partial continuation of U.S. Application No. 16 / 120,929, filed September 4, 2018, entitled "Knitted Prosthetic Lining Textile with Differentiated Knitted Fabric Exterior," which claims priority to U.S. Provisional Patent Application No. 62 / 554,102, filed September 5, 2017, the contents of which are hereby incorporated by reference. This application is also a partial continuation of U.S. Application No. 17 / 094,885, filed November 11, 2020, entitled “Low-Extension Strips for Prosthetic and Orthopedic Applications,” which claims priority to U.S. Provisional Patent Application No. 62 / 938,483, filed November 21, 2019, and U.S. Provisional Patent Application No. 62 / 942,388, filed December 2, 2019, the entire contents of which are incorporated herein by reference. Technical Field

[0003] Invention Field

[0004] This invention relates to liner for prosthetic components. More specifically, the invention relates to liners with a specific sewing method such that the distal end of the liner has less stretch than the proximal end, in order to reduce piston movement. The liner incorporates low-stretch strips that reduce longitudinal elongation when applied to prostheses and orthotics. Background Technology

[0005] Implant liners have been used since the 1970s, mostly custom-made and made from a variety of materials. Since the 1980s, silicone liners have been used in the prosthetic industry, such as those described in U.S. Patent No. 4,923,474 granted to Klassen and Christensen. Other examples of such liners include U.S. Patent No. 5,728,168 granted to Raj et al., U.S. Patent No. 5,830,237 granted to Kania, U.S. Patent No. 5,507,834 granted to Raj et al., U.S. Patent No. 5,443,525 granted to Raj et al., and U.S. Patent No. 5,728,168 granted to Raj et al. Gel and polyurethane liners have also been used for prosthetic and orthopedic purposes, and most have fabric overlays. Fabric overlays are used to reinforce the underlying material (silicone, gel, polyurethane) and allow for a degree of stretch, making it easier to put on and take off the liner by rolling up or down the residual limb.

[0006] Each liner disclosed in U.S. Patent Nos. 5,443,525, 5,507,234, 5,728,168, 6,544,292, and 6,764,631 represents an advancement in the field of fabric-covered liner, the contents of which are hereby incorporated by reference. Furthermore, U.S. Patent No. 6,454,812 (the contents of which are also hereby incorporated by reference) describes a liner incorporating additional features attached to the liner fabric to limit vertical extension at the distal end of the liner, and that patent is hereby incorporated by reference. This method has been successfully used in the field of prostheses, providing the liner fabric with a reinforced distal end, means for attaching threaded mechanical features, and a boundary layer preventing accidental penetration of the fabric by thermoplastic elastomers during high-pressure processing.

[0007] Initially, fabric liners with low distal longitudinal elongation were popular because they prevented "piston movement." Piston movement refers to the loss of suspension function of the stump when weight is removed and the downward pressure of the stump against the socket when weight is applied, similar to a piston in a car. This means there is a delay between stump movement and prosthesis movement each time the amputee attempts to move his / her leg. Piston movement is more pronounced in locking liners, which are liners that attach the prosthesis to the stump via a distal umbrella-shaped device and a distal pin with a corresponding lock. Earlier versions of fabric liners with low distal longitudinal elongation, while preventing piston movement, also limited knee flexion in amputees. If the liner exhibits high longitudinal elongation along its entire length, the prosthesis will move up and down during walking. On the other hand, if there is no longitudinal elongation at all, amputees will find it difficult to bend their knees.

[0008] To overcome this problem, liners with distal matrices have been developed, such as those described in U.S. Patent No. 6,454,812. These liners include an additional fabric matrix woven to a minimum longitudinal elongation, wherein the matrix is ​​internally bonded to the outer fabric of the liner. However, this structure is costly to manufacture because it requires additional steps: applying an adhesive to the inside of the outer fabric, applying the reinforcing matrix to the adhesive layer, and curing the adhesive. The present invention overcomes this problem by eliminating the reinforcing matrix and replacing it with a differentiated weave of the outer fabric.

[0009] There is a need for liners that have limited extensibility in localized areas of the residual limb but greater extensibility in other areas. This need is highlighted in each liner described in U.S. Patents such as Raj's 9,216,099, 9,364,347, 8,394,150, 8,852,291, 8,246,694, 8,808,294, 8,226,732, 8,357,206, 6,764,631, 6,544,292, 6,454,812, 5,728,168, and 5,507,834.

[0010] U.S. Patent No. 6,231,617 (Fai Inventions), the contents of which are incorporated herein by reference, describe a liner comprising strip-shaped or band-shaped long arms. However, a limitation of the Fay liner is that these arms must radiate from or be mounted to the peripheral edge of the distal connecting plate. This invention allows low-elongation strips to be used anywhere on or within a prosthesis / orthosis, without being limited to a specific location on the device.

[0011] Typically, the distal end of a locking liner requires fabric with low longitudinal stretch, or the use of polymers or other solid devices to reduce piston-like movement of the prosthetic device during walking or movement. Other areas may also benefit from reduced fabric stretch, such as in cases of above-knee amputees who may develop abnormally voluptuous stumps.

[0012] This invention utilizes a sewing method with a low stretch area, resulting in less stretch at the distal end of the lining than at the proximal end, thereby preventing piston movement.

[0013] Therefore, one object of the present invention is to provide an improvement that overcomes the aforementioned shortcomings of prior art devices and provides an improvement that makes an important contribution to the advancement of lining technology.

[0014] Another object of the present invention is to provide a liner for a prosthetic assembly that reduces piston movement of the residual limb during use.

[0015] Another object of the present invention is to provide a liner for a prosthesis assembly that can also be used with a locking prosthesis assembly.

[0016] Another object of the present invention is to provide a lining that implements two or more stitching types.

[0017] Another object of the present invention is to provide a liner with a distal stretching capacity that is less than that of the proximal end.

[0018] Another object of the present invention is to provide a lining with variable stretch characteristics based on the weave structure and sewing method.

[0019] Another object of the present invention is to provide low elongation materials in strips or other shapes that can be applied to the outside of fabric linings.

[0020] Another object of the present invention is to provide a low-elongation material that, when applied to fabric linings, reduces longitudinal elongation while maintaining lateral elongation.

[0021] Another object of the present invention is to provide a quick and inexpensive method to reduce the stretch of fabric linings in desired areas.

[0022] Another objective of this invention is to provide a customizable solution to improve patient comfort, enabling prosthetists to attach appropriate shapes to suitable locations to support or accommodate a region or segment of the residual limb, based on the patient's clinical needs.

[0023] Another objective of this invention is to constrain the dynamic deformation of the residual limb during walking.

[0024] Another object of the present invention is to provide a low-elongation material that can be cut into customer or standard shapes.

[0025] The foregoing outlines some of the relevant objectives of the invention. These objectives should be interpreted as merely illustrative of some of the more prominent features and applications contemplated by the invention. Many other beneficial results can be obtained by applying the disclosed invention in different ways or by modifying the invention within the scope of the disclosure. Therefore, other objectives and a more complete understanding of the invention can be obtained by referring to the summary and detailed description of preferred embodiments, as well as the scope of the invention as defined by the claims in conjunction with the accompanying drawings. Summary of the Invention

[0026] The present invention generally relates to a liner for a prosthesis assembly having a variable stretch region at the distal end, providing different stretch regions comprising low-stretch strips.

[0027] Specifically, this invention relates to a prosthetic liner that has lower longitudinal stretch in the distal region than in the proximal region or optionally the intermediate region. The vertical stretch in the distal region can be between 0-30% and the horizontal stretch between 10-200%, compared to 55-125% vertical stretch and 100-175% horizontal stretch in the proximal region. The stretch of the liner in various pressure-sensitive areas of the residual limb can also be reduced or increased depending on the region. This reduced longitudinal stretch can be achieved using multiple stitches in the distal region. Preferably, the liner is made of a stretchable material. The liner also has an inner layer of elastomeric gel. This prosthetic liner is designed primarily to prevent "piston movement" of the amputee's residual limb within the liner and to improve comfort in pressure-sensitive areas of the residual limb. The liner also includes the use of a low-stretch material adhered to the inside or outside of the fabric portion of the prosthetic liner or orthotic liner, restricting longitudinal movement while allowing lateral movement. The customizable nature of this invention allows for shaping and personalization according to user needs.

[0028] The foregoing has broadly outlined the more relevant and important features of the invention so that the subsequent detailed description of the invention can be better understood, thereby allowing a fuller appreciation of the invention's contribution to the prior art. Other features of the invention will be described below, forming the subject matter of the claims. Those skilled in the art will understand that the disclosed concepts and specific embodiments can be readily used as the basis for modifying or designing other structures to perform the same purpose of the invention. Those skilled in the art will also recognize that such equivalent structures do not depart from the spirit and scope of the invention as set forth in the appended claims. Attached Figure Description

[0029] To gain a more complete understanding of this disclosure and its advantages, reference is now made to the following description, taken in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a cross-sectional view of the invention used with a locking prosthesis assembly, showing two different types of stitches and different related areas;

[0031] Figure 2 This is a cross-sectional view of the present invention, showing the pressure-sensitive area of ​​a below-knee amputee;

[0032] Figure 3 This is a cross-sectional view of the present invention, showing the pressure tolerance area of ​​a below-knee amputation;

[0033] Figure 4 This is a cross-sectional view of the present invention, showing the pressure-sensitive area of ​​an above-knee amputation;

[0034] Figure 5 This is a cross-sectional view of the present invention, showing the pressure tolerance region of an above-knee amputation;

[0035] Figures 6A to 6N These are various types of needle stitches that can be used at the distal end of this invention to prevent piston movement;

[0036] Figure 7 This is a cross-sectional view of a liner with an internally integrated low-elongation material.

[0037] Figure 8 This is a top view of a preferred shape for a low-elongation material;

[0038] Figure 9 This is a top view of the second preferred shape for low-elongation materials;

[0039] Figure 10 This is a top view of the third preferred shape and configuration for low-elongation materials;

[0040] Figure 11 This is a top view of the second preferred configuration of the low-elongation material;

[0041] Figure 12 It is a cross-sectional view of the lining, which has an alternative arrangement of low-elongation material placed inside or outside;

[0042] Figure 13 It is a cross-sectional view of an alternative arrangement of low-elongation materials placed inside or outside;

[0043] Figure 14 This is a perspective view of a wrist orthosis with a low-elongation material adhered to its exterior;

[0044] Figure 15 This is a perspective view of a back orthosis with a low-elongation material adhered to its exterior.

[0045] Figure 16A This is a perspective view of an ankle orthosis with a low-elongation material adhered to its exterior;

[0046] Figure 16B yes Figure 16A A cross-sectional view of the ankle orthosis shown;

[0047] Figure 17 This is a perspective view of a knee orthosis with a low-elongation material adhered to its exterior; and

[0048] Figure 18 This is a perspective view of an elbow orthosis with a low-elongation material adhered to its exterior.

[0049] Similar reference numerals refer to similar parts in several views throughout the accompanying drawing. Detailed Implementation

[0050] The following description represents the currently contemplated best mode for carrying out the invention. This description should not be construed as limiting, but is solely for the purpose of describing one or more preferred embodiments of the invention. The scope of the invention should be determined with reference to the claims.

[0051] This invention relates to a liner 100 for a prosthetic device. For example... Figure 1 As shown, the liner 100 for the prosthesis assembly comprises various types of stitches. The liner 100 includes a distal region 50 with a distal region fabric cover 52, a proximal region 60 with a proximal region fabric cover 62, and an optional intermediate region 70 with an intermediate region fabric cover 72. In one embodiment, the distal region 50, including the distal end 80 of the liner, is configured to have reduced vertical stretch compared to the upper region 60 of the liner. Preferably, the vertical stretch of the distal region 80 is 0-30%, and the horizontal stretch is 10-200%, while, in contrast, the vertical stretch of the proximal region 60 is preferably 55-125%, and the horizontal stretch is 100-175%. Optionally, the intermediate region 70 may have a vertical stretch of 15-40%, a horizontal stretch of 80-120%, or it may have the same stretch characteristics as the proximal region 60. The reduced stretch of the distal region 50 is achieved by using various different stitches as described below on a flat knitting machine. In a preferred embodiment, the lining 100 is woven in a single-piece structure, with the proximal end 90 open and the distal end 80 closed. Alternatively, the two parts can be constructed independently and then sewn or otherwise joined together to form a complete lining fabric.

[0052] Preferably, the lining 100 is knitted using a computerized flat knitting machine, which allows the simultaneous or sequential use of several different yarns, including elastic fibers such as Lycra, latex, and silicone, in the same garment. These machines also allow for the use of different stitch types in different areas of the same garment and control over the tension of each knitted yarn. Furthermore, an inner gel layer 10 is located on the limb contact surface 22 of the outer lining fabric layer 30, which is co-extended along the entire length of the lining 100. The gel layer 10 can be any form of stretchable elastomer known in the art or subsequently developed, but is preferably a styrene-based polymer, such as SEEPS or SEBS.

[0053] In another embodiment, the liner 100 includes different horizontal and vertical extended stitch areas, depending on the anatomical features associated with the residual limb or the mechanical features associated with the prosthesis socket. This means that the boundary 110 between the distal region 50 and the proximal region 60 (or, if present, the intermediate region 70) may change position. The boundary 110 is preferably generally perpendicular to the central axis 120 of the liner 100. Furthermore, the distal end 70 may accommodate a locking mechanism 130. The use of the locking mechanism 130 requires a sufficiently robust structure to ensure that the distal connecting plate 140 can be held in place by the fabric, which could otherwise lead to catastrophic failure of the prosthesis. Typically, such a locking mechanism 130 is secured to the fabric using a gasket or other similar connection method that bites into the fabric. For the fabric to withstand the localized stresses exerted by the gasket, the woven structure at the distal end must be thicker and stronger than the rest of the fabric covering. This structure cannot be used in the intermediate region 70 or the proximal region 60, as it would degrade the functionality of the liner and restrict the user's movement.

[0054] More specifically, the locking mechanism area fabric cover 152 in the locking mechanism area 150 must have very low or no longitudinal elongation, but a high circumferential elongation, to comfortably accommodate the residual limb. The locking mechanism area 150 is limited to the area adjacent to the locking mechanism 130. The thickness of the fabric in the locking mechanism area 150 should be greater than the thickness of the fabric in the distal area 50. The distal area 50 must have a greater degree of longitudinal elongation than the locking mechanism area 150 to facilitate knee flexion. The intermediate area 70 may have a greater degree of both longitudinal and circumferential elongation than the distal area 50 to provide greater comfort for the amputee when sitting or moving.

[0055] In another embodiment, the lining fabric includes different horizontal and vertical stretch zones, depending on the anatomical features associated with the residual limb or the mechanical features associated with the prosthetic socket. The lower limb has various more pressure-sensitive effective zones requiring greater elongation; and various more pressure-resistant effective zones requiring smaller elongation. Figure 2 As shown, pressure-sensitive effective areas for below-knee amputations include portions of the tibia at 160°, such as the anterior tibia at 170° and the anterior tibial crest at 180°, portions of the fibula at 190°, such as the fibular head and neck at 200°, and the peroneal nerve at 210°. These areas of the body are sensitive to pressure, thus requiring linings with greater longitudinal or circumferential elongation at these points. On the other hand, as... Figure 3 As shown, the effective pressure tolerance areas for below-knee amputations include the patellar tendon 220, the medial tibial plateau 230, the tibial shaft 240, the fibular shaft 250, and the distal ends of the tibia 160 and fibula 190. Due to the tolerance exhibited by these areas, they may have more limited longitudinal or circumferential elongation.

[0056] Similarly, such as Figure 4 and Figure 5 As shown, above-knee amputations exhibit similar pressure-sensitive and pressure-tolerant regions. Pressure-sensitive regions include the distal lateral end 280 of the femur 270, the pubic symphysis 300 of the pelvic bone 290, and the perineal area 310. Pressure-tolerant regions include the ischial tuberosity 320 of the pelvic bone 290, the gluteal muscles 330, the lateral aspect of the residual limb 340, and the distal end 350 of the femur 270. Similar to below-knee amputations, pressure-sensitive regions in above-knee amputations require greater longitudinal or circumferential elongation at these points, while pressure-tolerant regions may exhibit more limited longitudinal or circumferential elongation due to the tolerance exhibited by these regions.

[0057] The lining fabric can be constructed in a variety of ways to provide the desired functionality. Functionality can be altered by using different yarns or denier numbers, different elastomers, different weights of elastomers, and different stitches to provide appropriate longitudinal and circumferential elongation along the lining length. Typical yarn types include, but are not limited to, polyester, nylon, acrylic, cellulose fibers, aramid, natural fibers, and metal wires. Typical elastomers include Lycra / polyurethane, natural rubber, nitrile rubber, and silicone. Typical stitch types include... Figures 6A to 6N As shown, this includes weft knitting. Figure 6A ), warp knitting (wrap, Figure 6B ), stockinette Figure 6C and Figure 6D ), garter Figure 6E ), suture needle (seam, Figure 6F ), drawnwork (fagoting) Figure 6G ), Tricot warp knitting (tricot, Figure 6H and 6I ), elongated, Figure 6J ), plated, Figure 6K ), slip pin (slip, Figure 6L ), and cluster (dip, Figure 6M ) and basket stitches Figure 6N It is used only in the distal region 50 of the liner 100 to distinguish it from the elongation in the proximal region 60.

[0058] This invention relates to a low-elongation material 400 for use in prosthetic or orthotic devices employing the aforementioned woven design. For example... Figure 7As shown, this low-elongation material 400 can be used in the liner 100 of a prosthesis having a distal connecting plate 140 at the distal end 80. The low-elongation material 400 for a prosthesis or orthopedic assembly preferably includes a material strip 410, which is preferably made of ribbon, fiberglass cloth, and other non-elastic materials such as carbon fiber and thermoplastics. The material strip 410 can also be a piece of fabric 412 with a non-elastic backing 414, which can face the inner gel layer 10 or the outer fabric liner 30 (e.g., Figure 7 As shown, the inelastic backing 414 faces the inner gel layer 10 (this is a preferred embodiment). The prosthesis liner 100 includes an elastomeric layer 10 having a limb contact surface 22 and a fabric surface 20, wherein the fabric surface 20 of the elastomeric layer 10 adheres to the outer fabric 30 of the prosthesis liner 100. A low-elongation material 400 may adhere to the inside or outside of the fabric 30 relative to the prosthesis liner 100, preferably up to six inches from the open proximal end. If internal placement is required, the low-elongation material 400 is placed between the elastomeric layer 10 and the fabric 30 in the desired area and adheres only to the fabric 30, as shown in exploded view portion B. Preferably, the low-elongation material 400 is placed at the distal end 80 of the prosthesis liner 100 and extends towards the proximal end 90 of the prosthesis liner 100. When placed at the distal end 80, the low-elongation material 400 preferably extends upward toward the proximal end 90 of the proximal end 90 of the prosthesis liner 100, stopping at least one inch from the proximal end 90. Similarly, the width of the low elongation material 400 is between 0.5 and 4 inches so that it can be placed in a variety of positions and orientations.

[0059] Figures 8 to 13 Various configurations of the low-elongation material 400 are shown. Figure 8 The low-elongation material 400 is shown as a strip of material, having a central opening 420 and a convex central region 430. (As shown) Figure 7 As shown, when the low-elongation material 400 adheres to the outside of the fabric 30, the locking mechanism 130 can pass through the central opening 420. Figure 9 As shown, the low-elongation material 400 can also be configured to have a plurality of arms 440 extending radially outward from the central opening 420. For example... Figure 10 and Figure 11 As shown, the central opening 420 is optional. The low-elongation material 400 can be shaped such that the distal end 450 of the strip is convex, while the proximal end 460 of the strip is concave. This allows the low-elongation material 400 to be placed around the distal connecting plate 140 or around the user's joint as needed without impeding joint movement.

[0060] like Figure 12 and Figure 13As shown, the low-elongation material 400 can be placed in a variety of configurations to meet the user's needs. The T-shaped and single-strip configurations shown are not the only configurations that may be helpful to the user; any configuration that a medical professional determines to be medically beneficial may be used.

[0061] The low-elongation material 400 described herein has been tested and ultimately demonstrated to limit the longitudinal stretch of the liner 100 while maintaining the lateral stretch. The lateral stretch was tested in the first table:

[0062]

[0063] As shown in the table above, "before" refers to the liner's static state, i.e., without applied weight, and "after" refers to the liner failure state (i.e., until the strips tear). The measured figures are circumference (in inches). The test data shows that the lateral stretch is essentially the same regardless of whether the liner is reinforced with the low-elongation material 400.

[0064] Similar tests were conducted to examine longitudinal extension:

[0065]

[0066] The test shows that when using low-elongation material 400, longitudinal elongation is reduced by more than half.

[0067] Low-elongation material 400 can also be used in orthotics, which is useful in limiting joint flexion, both as a treatment aid in injury situations and as a means of injury prevention. For example... Figure 14 As shown, the low-elongation material 400 can be used with the wrist brace 470 and can be adhered to the exterior or interior as described above. Similarly, as Figure 15 As shown, the low-elongation material 400 can be integrated with the back brace orthosis 480. Similarly, the low-elongation material 400 can be used in the ankle orthosis 490, such as... Figure 16A and Figure 16B As shown, the low-elongation material 400 preferably has a certain thickness to prevent ankle movement. Figure 17 The low-elongation material 400 is described for use with the knee orthosis 500. Figure 18 The use of low-elongation material 400 in elbow orthosis 510 is described. In all configurations used with the orthosis, the low-elongation material 400 may be in strip form or a specific shape, as determined by the orthotist, and adhered to the inside or outside of fabric 30.

[0068] When the low-elongation material 400 is required for internal use, it is first adhered to the fabric 30 of the fabric surface 20 using conventional methods. The assembly is then placed in a mold, where a gel, silicone, or polyurethane is molded to form the composite material. Alternatively, external use is achieved by adhering the low-elongation material 400 to the desired location on the exterior of the fabric 30.

[0069] This disclosure includes the contents contained in the appended claims, as well as the foregoing description. Although the invention has been described in its preferred form and has a certain degree of specificity, it should be understood that the disclosure of the preferred form is by way of example only, and many changes may be made to the construction details and the combination and arrangement of components without departing from the spirit and scope of the invention.

[0070] Now that the invention has been described,

[0071] The claims are as follows:

Claims

1. A prosthetic liner, comprising: An inner lining fabric cover having an open proximal end and a closed distal end, woven into a tubular shape, the inner lining fabric cover further comprising a proximal region fabric cover and a distal region fabric cover, wherein the distal region fabric cover is sewn such that the distal region fabric cover has a longitudinal elongation of 0-30% from a rest position, and includes a sewing pattern different from that of the proximal region fabric cover, such that the proximal region has a longitudinal elongation of 55-125% from a rest position; A styrene-based elastomer gel layer, the styrene-based elastomer gel layer being located on the inner surface of the lining fabric cover, the styrene-based elastomer gel layer and the lining fabric cover being co-extended; and A one-piece low-elongation material comprising a glass fiber cloth between the elastomeric gel layer and the inner lining fabric cover, thereby forming a composite material, wherein... The single-piece low-elongation material includes a circular base at the closed distal end and at least two arms with circular ends, wherein the arms extend upward from the closed distal end to a distance of up to six inches from the open proximal end and have a width of 0.5 to 4 inches.

2. The prosthetic liner according to claim 1, wherein, The distal area is knitted using stitches selected from the following group: weft knitting, warp knitting, plain knitting, rib knitting, seam stitch, drawn thread, tricot warp knitting, drawn thread, wrap stitch, slip stitch, tuck stitch, or tatami stitch.

3. The prosthetic liner according to claim 1, wherein, The proximal region can extend longitudinally more than the distal region.

4. The prosthetic liner according to claim 1, wherein, The remote region further includes a locking mechanism region, wherein the locking mechanism region accommodates the locking mechanism.

5. The prosthetic liner according to claim 4, wherein, The inner lining fabric cover further includes a locking mechanism area fabric cover, which is thicker than the distal area fabric cover.

6. The prosthetic liner according to claim 1, wherein, The fabric covering exhibits greater longitudinal elongation in the pressure-sensitive areas of the effective region.

7. The prosthetic liner according to claim 1, wherein, The fabric covering exhibits lower longitudinal elongation in the pressure-resistant area of ​​the effective region.

8. The prosthetic liner according to claim 1, wherein, The elastomeric gel layer comprises a styrene-based polymer.

9. A prosthetic liner, comprising: A fabric covering having an open proximal end and a closed distal end, woven into a tubular shape, the fabric covering further comprising a proximal region and a distal region, wherein the distal region is sewn such that it has a longitudinal elongation of 0-30% from a rest position, and includes stitches alternating with the fabric covering of the proximal region such that the proximal region has a longitudinal elongation of 55-125% from a rest position; The distal region is sewn using stitches selected from the group consisting of: weft knitting, warp knitting, plain knitting, ribbed knitting, sewing stitch, drawn thread, tricot warp knitting, drawn thread, overlock stitch, slip stitch, tuck stitch, or mat stitch. The locking mechanism area, located below the distal area, has a thicker fabric. The locking mechanism area accommodates the locking mechanism; An elastomeric gel layer, the elastomeric gel layer being located on the inner surface of the fabric covering, the elastomeric gel layer and the fabric covering being co-extruded; and, A one-piece low-elongation material, comprising a non-elastic material located between the elastomeric gel layer and the fabric covering, thereby forming a composite material. The single-piece low-elongation material includes a circular base at the closed distal end and at least two arms with circular ends, wherein the arms extend upward from the closed distal end to a distance of up to six inches from the open proximal end and have a width of 0.5 to 4 inches.

10. A prosthetic liner, comprising: An inner lining fabric cover having an open proximal end and a closed distal end, woven into a tubular shape, the inner lining fabric cover further comprising a proximal region fabric cover and a distal region fabric cover, wherein the distal region fabric cover is sewn such that the distal region fabric cover has a longitudinal elongation of 0-30% from a rest position, and includes a sewing pattern different from that of the proximal region fabric cover, such that the proximal region has a longitudinal elongation of 55-125% from a rest position; A styrene-based elastomer gel layer, said styrene-based elastomer gel layer being located on the inner surface of the lining fabric cover, said styrene-based elastomer gel layer and said lining fabric cover being co-extended; and, A one-piece low-elongation material comprising a non-elastic backing fabric between the elastomeric gel layer and the inner lining fabric cover, thereby forming a composite material, wherein the one-piece low-elongation material comprises a circular base at the distal end of the closure and at least two arms with circular ends, wherein the arms extend upward from the distal end of the closure to a distance of up to six inches from the proximal end of the open portion and have a width of 0.5 to 4 inches.

Images