IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
|
| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0711234
(2010-02-23)
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| 등록번호 |
US-8317873
(2012-11-27)
|
|
발명자
/ 주소 |
- Doddroe, Jeffrey L.
- Kelley, Christopher T.
- Rowe, Jr., Larry Gail
|
| 출원인 / 주소 |
- The Ohio Willow Wood Company
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
1 인용 특허 :
98 |
초록
▼
A controlled-stretch prosthetic liner comprising a polymeric material covered with at least a stretch-controlling fabric. Certain liner types, such as below knee (BK) liners, may also include a panel of more stretchable fabric so as to prevent any interference with knee flexion. The polymeric materi
A controlled-stretch prosthetic liner comprising a polymeric material covered with at least a stretch-controlling fabric. Certain liner types, such as below knee (BK) liners, may also include a panel of more stretchable fabric so as to prevent any interference with knee flexion. The polymeric material of the liner may also be used to control liner stretch, such as by adding Kevlar pulp or other materials that increase the strength and reduce the elasticity of the polymeric material and/or by reducing the amount of plasticizer(s) present therein. The stretch-controlling fabric, possibly in conjunction with the polymeric material, acts to limit the longitudinal stretch of the liner while not adversely affecting the radial stretch thereof.
대표청구항
▼
1. A controlled-stretch prosthetic liner for use as a standalone residual limb-prosthetic socket interface, comprising: a fabric covering having an open end for introduction of a residual limb and a closed end opposite said open, said fabric covering further comprising: a stretch-controlling fabric
1. A controlled-stretch prosthetic liner for use as a standalone residual limb-prosthetic socket interface, comprising: a fabric covering having an open end for introduction of a residual limb and a closed end opposite said open, said fabric covering further comprising: a stretch-controlling fabric portion extending from said closed end, said stretch-controlling fabric having a limited stretch direction with a range of elasticity of between about 10-40%, a non-limited stretch direction with a range of elasticity of between about 70-250%, and a modulus in the non-limited stretch direction of between about 0.5-12.0 lbf., said stretch-controlling fabric oriented such that said limited stretch direction is directed along the length of said liner, anda two-way stretch fabric portion joined to said stretch-controlling fabric portion, said two-way stretch fabric portion located to overlie a joint of a residual limb when said liner is worn, said two-way stretch fabric portion comprised of a fabric having a range of elasticity of between about 70-250% in both directions and a 50% modulus of between about 0.9-11.25 lbf.;a continuous layer of a cushioning and shape-conforming polymeric material residing on only an interior surface of said fabric covering, said polymeric material extending from said closed end of said fabric covering at least a distance that is substantially equivalent to the depth of a prosthetic socket with which said covering will be used; anda docking element located at the closed end of said fabric covering for attaching the liner to a socket portion of a prosthetic limb;whereby, when said liner is used by an amputee with a prosthetic limb, said stretch-controlling fabric portion of said fabric covering will act to limit longitudinal stretching of said liner while said two-way stretch fabric portion of said fabric covering will concurrently permit adequate flexion of a joint of the amputee's residual limb. 2. The liner of claim 1, wherein said stretch-controlling fabric has a range of elasticity of less than 30% in said limited stretch direction. 3. The liner of claim 1, wherein said stretch-controlling fabric has a range of elasticity of between about 140-190% in said non-limited stretch direction. 4. The liner of claim 1, wherein said stretch-controlling fabric has a modulus of between about 0.5-2.0 lbf. in said non-limited stretch direction. 5. The liner of claim 1, wherein said stretch-controlling fabric has a weight of between about 12-22 oz./sq. yd. 6. The liner of claim 1, wherein said stretch-controlling fabric is of rib knit construction and includes nylon 6,6. 7. The liner of claim 6, further comprising elastic cord inserted into at least some of the courses of said rib knit fabric. 8. The liner of claim 1, wherein said two-way stretch fabric has a range of elasticity of between about 100-130% in both directions. 9. The liner of claim 1, wherein said two-way stretch fabric has a 50% modulus of at least about 3.25 lbf. 10. The liner of claim 1, wherein said two-way stretch fabric forms a panel of between about 1.8-3.8 inches in width as measured radially between linear tangent points of said panel and said stretch-controlling fabric. 11. The liner of claim 1, wherein said two-way stretch fabric forms a panel having a width of between about 40-100% of the full lay-flat width of the associated liner as measured between linear tangent points of said panel and said stretch-controlling fabric. 12. The liner of claim 1, wherein said polymeric material is a block copolymer and mineral oil gel composition. 13. The liner of claim 12, wherein said block copolymer and mineral oil gel composition is reinforced with KEVLAR. 14. The liner of claim 1, wherein said polymeric material tapers from a greater thickness at said closed end of said fabric covering to a lesser thickness at said open end of said fabric covering. 15. The liner of claim 14, wherein said polymeric material tapers substantially symmetrically from said closed end to said open end of said fabric covering. 16. The liner of claim 14, wherein said polymeric material tapers substantially asymmetrically along anterior and posterior sections of said fabric covering, with said polymeric material located along said anterior portion being thicker than said polymeric material located along said posterior portion at any given distance from said closed end. 17. The liner of claim 1, wherein said docking element includes a metallic base with an internally threaded boss extending therefrom. 18. The liner of claim 17, wherein said docking element is bonded to said fabric covering by an overlying umbrella of polyurethane. 19. The liner of claim 1, wherein a controlled-stretch portion of said liner exhibits an elasticity in a longitudinal direction of between about 15-25%, an elasticity in a circumferential direction of between about 90-130%, and has a 50% modulus in the circumferential direction of between about 1.0-2.0 lbf. 20. A controlled-stretch prosthetic liner for use as a standalone residual limb-prosthetic socket interface, comprising: a fabric covering having an open end for introduction of a residual limb and a closed end opposite said open, said fabric covering designed to control the elasticity of said liner in a longitudinal and circumferential direction, said fabric covering further comprising: a stretch-controlling fabric portion extending from said closed end, said stretch-controlling fabric having a limited stretch direction with a range of elasticity of less than about 30%, a non-limited stretch direction with a range of elasticity of between about 140-190%, a modulus in the non-limited stretch direction of between about 0.5-2.0 lbf., and a weight of between about 12-22 oz./sq. yd, said stretch-controlling fabric oriented such that said limited stretch direction extends in the longitudinal direction of said liner, anda two-way stretch fabric portion located within an opening in said stretch-controlling fabric portion, said two-way stretch fabric portion forming a panel of between about 1.8-3.8 inches in radial width, said panel joined to said stretch-controlling fabric portion and located to overlie a joint of a residual limb when said liner is worn, said two-way stretch fabric portion comprised of a fabric having a range of elasticity of between about 100-130% in both directions and a 50% modulus of at least about 3.25 lbf.;a continuous layer of a cushioning and shape-conforming block copolymer and mineral oil gel composition residing on only an interior surface of said fabric covering, said block copolymer and mineral oil gel composition extending from said closed end of said fabric covering at least a distance that is substantially equivalent to the depth of a prosthetic socket with which said covering will be used; anda docking element located at the closed end of said fabric covering for attaching said liner to a socket portion of a prosthetic limb;whereby, when said liner is used by an amputee with a prosthetic limb, said stretch-controlling fabric portion of said fabric covering will act to limit longitudinal stretching of said liner while said two-way stretch fabric portion of said fabric covering will concurrently permit adequate flexion of a joint of the amputee's residual limb. 21. The liner of claim 20, wherein said stretch-controlling fabric is of a rib knit construction that includes elastic cord inserted into at least some of the courses thereof. 22. The liner of claim 20, wherein said block copolymer and mineral oil gel composition includes KEVLAR that reinforces said gel composition and assists with liner stretch control. 23. The liner of claim 20, wherein a controlled-stretch portion thereof exhibits an elasticity in a longitudinal direction of between about 15-25%, an elasticity in a circumferential direction of between about 90-130%, and has a 50% modulus in the circumferential direction of between about 1.0-2.0 lbf., and wherein said liner in the area of said panel of two-way stretch fabric exhibits an elasticity of 60% or greater in both the longitudinal and circumferential directions, and has a 50% modulus of between about 1.0-3.0 lbf. 24. A controlled-stretch below-knee prosthetic liner for use as a standalone residual leg-prosthetic socket interface, comprising: a fabric covering having an open end for introduction of a residual leg and a closed end opposite said open, said fabric covering designed to control the elasticity of said liner in a longitudinal and circumferential direction, said fabric covering further comprising: a stretch-controlling fabric portion extending from said closed end, said stretch-controlling fabric having a limited stretch direction with a range of elasticity of less than about 30%, a non-limited stretch direction with a range of elasticity of between about 140-190%, a modulus in the non-limited stretch direction of between about 0.5-2.0 lbf., and a weight of between about 12-22 oz./sq. yd, said stretch-controlling fabric oriented such that said limited stretch direction extends in the longitudinal direction of said liner,a two-way stretch fabric portion located within an opening in said stretch-controlling fabric portion, said two-way stretch fabric portion forming a panel of between about 1.8-3.8 inches in width and joined to said stretch-controlling fabric portion by a sewn seam, said panel located to overlie the knee joint of a residual leg when said liner is worn and comprised of a fabric having a range of elasticity of between about 100-130% in both directions and a 50% modulus of less than about 3.25 lbf.;a continuous layer of a cushioning and shape-conforming block copolymer and mineral oil gel composition residing on only an interior surface of said fabric covering, said block copolymer and mineral oil gel composition extending from said closed end of said fabric covering at least a distance that is substantially equivalent to the depth of a prosthetic socket with which said covering will be used; anda docking element located at the closed end of said fabric covering for attaching said liner to a socket portion of a prosthetic leg;wherein a controlled-stretch portion of said liner exhibits an elasticity in a longitudinal direction of between about 15-25%, an elasticity in a circumferential direction of between about 90-130%, and has a 50% modulus in the circumferential direction of between about 1.0-2.0 lbf., and wherein said liner in the area of said panel of two-way stretch fabric exhibits an elasticity of 60% or greater in both the longitudinal and circumferential directions, and has a 50% modulus of between about 1.0-3.0 lbf.; andwhereby, when said liner is used by an amputee with a prosthetic leg, said stretch-controlling fabric portion of said fabric covering will act to limit longitudinal stretching of said liner while said two-way stretch fabric portion of said fabric covering will concurrently permit adequate flexion of a knee joint of the amputee's residual leg. 25. The liner of claim 24, wherein said stretch-controlling fabric is of a rib knit construction that includes elastic cord inserted into at least some of the courses thereof. 26. The liner of claim 24, wherein said block copolymer and mineral oil gel composition includes KEVLAR that reinforces said gel composition and assists with liner stretch control. 27. A controlled-stretch prosthetic liner for use as a standalone residual limb-prosthetic socket interface, comprising: a fabric covering having an open end for introduction of a residual limb and a closed end opposite said open, said fabric covering further comprising: a stretch-controlling fabric portion extending from said closed end, said stretch-controlling fabric having a limited stretch direction and a non-limited stretch direction, said stretch-controlling fabric oriented such that said limited stretch direction is directed along the length of said liner, anda two-way stretch fabric portion joined to said stretch-controlling fabric portion, said two-way stretch fabric portion located to overlie a joint of a residual limb when said liner is worn;a continuous layer of a cushioning and shape-conforming polymeric material residing on only an interior surface of said fabric covering, said polymeric material extending from said closed end of said fabric covering at least a distance that is substantially equivalent to the depth of a prosthetic socket with which said covering will be used; anda docking element located at the closed end of said fabric covering for attaching the liner to a socket portion of a prosthetic limb;whereby, a controlled-stretch portion of said liner exhibits an elasticity in a longitudinal direction of between about 15-25%, an elasticity in a circumferential direction of between about 90-130%, and has a 50% modulus in the circumferential direction of between about 1.0-2.0 lbf.; andwhereby said liner in the area of said two-way stretch fabric portion, exhibits an elasticity of 60% or greater in both the longitudinal and circumferential directions, and has a 50% modulus of between about 1.0-3.0 lbf.
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