CA2500424A1 - Prosthetic foot with tunable performance - Google Patents

Prosthetic foot with tunable performance Download PDF

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Publication number
CA2500424A1
CA2500424A1 CA002500424A CA2500424A CA2500424A1 CA 2500424 A1 CA2500424 A1 CA 2500424A1 CA 002500424 A CA002500424 A CA 002500424A CA 2500424 A CA2500424 A CA 2500424A CA 2500424 A1 CA2500424 A1 CA 2500424A1
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CA
Canada
Prior art keywords
calf shank
foot
keel
foot keel
spiral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002500424A
Other languages
French (fr)
Other versions
CA2500424C (en
Inventor
Barry W. Townsend
Byron K. Claudino
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BYRON KENT CLAUDINO
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BYRON KENT CLAUDINO
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Filing date
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Publication of CA2500424A1 publication Critical patent/CA2500424A1/en
Application granted granted Critical
Publication of CA2500424C publication Critical patent/CA2500424C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • AHUMAN NECESSITIES
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    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
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    • A61F2/66Feet; Ankle joints
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
    • A61F2/68Operating or control means
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    • A61F2/00Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50Prostheses not implantable in the body
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    • A61F2002/7615Measuring means
    • AHUMAN NECESSITIES
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    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0075Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable

Abstract

A prosthetic foot (70) incorporates a foot keel (71) and a calf shank (72) connected to the foot keel to form an ankle joint area of the prosthetic foot.
The foot keel has forefoot and hindfoot portions and an upwardly arched midfoot portion extending between the forefoot and midfoot portions. The calf shank includes a downward convexly curved lower end in the form of a spiral which is adjustably attached at a portion thereof to the foot keel by way of a coupling element. The calf shank extends upward anteriorly from the spiral to an upstanding upper end thereof. The coupling element includes a stop of a predetermined size to limit dorsiflexion of the calf shank in gait. The calf shank creates an integrated ankle and calf shank with the foot keel which has a variable radii response outcome similar to the disclosed parabola shaped calf shank while being readily covered by a cosmetic covering for the foot, ankle and lower leg.

Claims (23)

1. A prosthetic foot comprising:
a longitudinally extending foot keel;~
a calf shank secured to the foot keel at a lower end thereof and extending upwardly from the foot keel;
wherein the lower end of the calf shank is in the form of a spiral, the calf shank extending upward anteriorly from the spiral to an upstanding upper end thereof.
2. The prosthetic foot according to claim 1, wherein the calf shank is secured to the foot keel by way of a coupling element.
3. The prosthetic foot according to claim 2, wherein a radially inner end of the spiral of the calf shank is fastened to the coupling element.
4. The prosthetic foot according to claim 3, wherein the calf shank lower end spirals around the radially inner end above the foot keel.
5. The prosthetic foot according to claim 1 wherein the coupling element includes a stop to limit dorsiflexion of the upwardly extending calf shank in gait.
6. The prosthetic foot according to claim 5, wherein said stop includes at least one wedge shaped member secured to the coupling element anterior of the calf shank.
7. The prosthetic foot according to claim 1, wherein the calf shank is secured to the posterior of the foot keel and extends upwardly above a hindfoot portion and the posterior part of a midfoot portion of the foot keel.
8. The prosthetic foot according to claim 1, further comprising a cosmetic covering in the shape of a human foot and lower leg, the cosmetic covering being located over the foot keel and at least the lower end of the calf shank with the calf shank rising upwardly from the foot keel within the lower leg covering.
9. The prosthetic foot according to claim 1, further comprising an adjustable fastening arrangement securing the calf shank to the foot keel, the fastening arrangement permitting adjustment of the relationship of the foot keel and calf shank to tune the performance of the prosthetic foot.
10. The prosthetic foot according to claim 9, wherein the adjustable fostering arrangement includes at least one releasable fastener and a longitudinally extending opening in the foot keel through which the fastener extends to permit adjustment of the alignment of the calf shank and the foot keel in the longitudinal direction of the foot keel.
11. The prosthetic foot according to claim 1, wherein the calf shank has a radius of the curvature which increases progressively as the calf shank spirals outwardly and as the calf shank extends upwardly from its lower, spiral end.
12. The prosthetic foot according to claim 1, wherein the foot keel has an upward convexly curved dorsal surface of a midfoot portion of the foot keel facing the spiral lower end of the calf shank, radii of curvature of the spiral and the convexly curved dorsal surface of the foot keel affecting a dynamic response capability and motion outcome of the prosthetic foot in gait.
13. A prosthetic foot comprising:
a longitudinally extending foot keel;
a coupling element connected to the foot keel;

a resilient, upstanding calf shank having a lower end connected to the foot keel by way of the coupling element to form an ankle joint area of the foot, and an upper end to connect with a supporting structure on an amputee's leg;
wherein the lower end of the calf shank is in the form of a spiral, the calf shank extending upwardly anteriorly from the spiral to the upper end thereof.
14. The prosthetic foot according to claim 13, wherein the coupling element includes a stop to limit dorsiflexion of the calf shank in gait.
15. The prosthetic foot according to claim 14, wherein the stop includes at least one wedge shaped member secured to the coupling element anterior of the calf shank.
16. The prosthetic foot according to claim 13, further comprising an adjustable fastening arrangement to permit adjustment of the alignment of the calf shank and the foot keel with respect to one another in the longitudinal direction of the foot keel for tuning the performance of the prosthetic foot.
17. The prosthetic foot according to claim 16, wherein the adjustable fastening arrangement includes at least one releasable fastener connecting the foot keel and the coupling element and a longitudinally extending opening in the foot keel through which the fastener extends to permit said adjustment of the alignment of the foot keel and the calf shank.
18. The prosthetic foot according to claim 13, wherein the spiral lower end of the calf shank has a radius of curvature which increases progressively as the calf shank spirals and as it extends upwardly from its spiral lower end.
19. The prosthetic foot according to claim 13, further comprising a cosmetic covering in the shape of a human foot and lower leg, the cosmetic covering being located over the foot keel and at least the lower end of the calf shank with the calf shank rising upwardly from the foot keel within the lower leg covering.
20. A calf shank for a prosthetic foot comprising:
an elongated, semi-rigid resilient member having one end in the form of a spiral for attachment to a foot keel to form an ankle joint area of the prosthetic foot, and an opposite end for connection with a supporting structure on an amputee's leg, the member extending curvilinearly with a progressively increasing radius of curvature from the spiral at the one end toward said opposite end.
21. The calf shank according to claim 20, wherein a radially inner end of the spiral at said one end of the member includes a fastener for fastening the calf shank to a coupling element for attachment to a foot keel.
22. The calf shank according to claim 21, wherein the one end of the member spirals around the radially inner end before extending toward the opposite end.
23. The calf shank according to claim 20, wherein the opposite end of the member includes an adapter secured thereto and an inverted pyramid-shaped attachment fitting mounted thereon.
CA002500424A 2001-03-30 2002-09-26 Prosthetic foot with tunable performance Expired - Fee Related CA2500424C (en)

Applications Claiming Priority (2)

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US09/820,895 US6562075B2 (en) 2001-03-30 2001-03-30 Prosthetic foot with tunable performance
PCT/US2002/030471 WO2004028416A1 (en) 2001-03-30 2002-09-26 Prosthetic foot with tunable performance

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CA2500424A1 true CA2500424A1 (en) 2004-04-08
CA2500424C CA2500424C (en) 2009-12-15

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CA2446768A Expired - Fee Related CA2446768C (en) 2001-03-30 2002-03-08 Prosthetic foot with tunable performance
CA002442103A Abandoned CA2442103A1 (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance
CA2442104A Expired - Fee Related CA2442104C (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance
CA2442113A Expired - Fee Related CA2442113C (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance
CA002500424A Expired - Fee Related CA2500424C (en) 2001-03-30 2002-09-26 Prosthetic foot with tunable performance
CA002520808A Expired - Fee Related CA2520808C (en) 2001-03-30 2003-03-31 Prosthetic foot with tunable performance and improved vertical load/shock absorption

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CA2446768A Expired - Fee Related CA2446768C (en) 2001-03-30 2002-03-08 Prosthetic foot with tunable performance
CA002442103A Abandoned CA2442103A1 (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance
CA2442104A Expired - Fee Related CA2442104C (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance
CA2442113A Expired - Fee Related CA2442113C (en) 2001-03-30 2002-03-29 Prosthetic foot with tunable performance

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EP (6) EP1372547B1 (en)
JP (5) JP4328095B2 (en)
CN (6) CN100522109C (en)
AT (2) ATE506036T1 (en)
AU (4) AU2002305104A1 (en)
CA (6) CA2446768C (en)
DE (2) DE60239792D1 (en)
DK (1) DK1372547T3 (en)
ES (1) ES2364815T3 (en)
HK (4) HK1065698A1 (en)
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WO (6) WO2002078577A1 (en)

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