WO2022038481A1 - A prosthetic foot with adjustable center of gravity and activity - Google Patents

A prosthetic foot with adjustable center of gravity and activity Download PDF

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Publication number
WO2022038481A1
WO2022038481A1 PCT/IB2021/057510 IB2021057510W WO2022038481A1 WO 2022038481 A1 WO2022038481 A1 WO 2022038481A1 IB 2021057510 W IB2021057510 W IB 2021057510W WO 2022038481 A1 WO2022038481 A1 WO 2022038481A1
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WO
WIPO (PCT)
Prior art keywords
prosthetic foot
amputee
adapter
foot
hole
Prior art date
Application number
PCT/IB2021/057510
Other languages
French (fr)
Inventor
Mohammad Hassan AHMADI SHALMANI
Original Assignee
Ahmadi Shalmani Mohammad Hassan
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Filing date
Publication date
Application filed by Ahmadi Shalmani Mohammad Hassan filed Critical Ahmadi Shalmani Mohammad Hassan
Publication of WO2022038481A1 publication Critical patent/WO2022038481A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/66—Feet; Ankle joints
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS 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
    • A61F2/00—Filters 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
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/60—Artificial legs or feet or parts thereof
    • A61F2/66—Feet; Ankle joints
    • A61F2002/6614—Feet

Definitions

  • This invention relates generally to prosthetic limbs. More specifically, the invention is related to Prostheses foot. More specifically, the invention is related to All bilateral leg amputees. More specifically, the invention is related to Foreshortened Prostheses (Stubbies) feet. Most specifically, the invention relates to a prosthetic foot with adjustable center of gravity and activity.
  • prosthetic foot devices are available as substitutes for human feet.
  • the basic requirements of an acceptable prosthetic foot are that it will provide a stable support for the amputee throughout a reasonable range of activities and permit the amputee to walk with a normal stride.
  • the prosthetic foot must flex during walking as the foot continually moves through the heel-strike, foot-flat, and toe-off cycle. It must also, throughout this cycle, provide transverse stability particularly at toe-off, when the entire weight of the amputee is applied to the forward portion of the prosthetic foot.
  • Prior art prosthetic feet typically are substantially transversely inflexible which interferes with side to side balancing when walking on uneven surfaces.
  • WO/1998/053769 discloses a prosthetic foot assembly having improved resilient cushions and components for use by an amputee.
  • US00D782679S discloses a prosthetic trainer foot for use by an amputee.
  • the SIDEKICKSTM prosthetic foot was revealed which has the capabilities of adjusting to the weight changes of the amputee person, adapting the prosthetic foot to different levels to maintain balance and stability of the amputee people, absorbing a wide range of vertebral forces vertically, horizontally and rotationally .
  • this prosthetic foot has some disadvantages like the inability for adjustment of center of gravity, no weight shifting, no rotation of male/female adapter, no change of male/female adapter, height limit, high price, lack of proper personalization for the amputee people, lack of adjustment of the prosthetic foot to fit the developmental stages from childhood to adulthood, and an inability for simple manufacturing and assembly of the prosthetic foot .
  • prosthetic feet commercially available are the College Park® SIDEKICKS TM , College Park® VENTURE TM , College Park® TRIBUTE T M , College Park® TRUPERTM, and College Park® TRUSTEPTM. However, various aspects of prosthetic feet currently available could be improved to further enhance performance.
  • Prosthetic feet by the trademarks SIDEKICKS ‘VENTURE ‘TRIBUTE manufactured by College Park Co. (CPI) can not be configured and adjusted For all stages of development from childhood to adulthood, and this weakness leads to an increase the price of the prosthetic foot for the amputee during growth ages.
  • This invention is a prosthetic foot with the capability for adjusting the center of gravity and activity .
  • Amputee people with foot amputation use prostheses to step.
  • some factors prevent normal stepping and walking of the amputee person in interaction together, including failure to adjust the center of gravity of the prosthesis without the need for a sliding adapter, no weight shifting, no rotation of male/female adapter, no change of male/female adapter, height limit, unpleasant noises (Clicking-Squeaking) of the sliding adapter, high weight of the prosthetic foot, high price, lack of ease of work for a prosthetic expert, adjustment of the prosthetic foot according to growth stages from childhood to adulthood, lack of simple manufacturing and assembly of the prosthetic foot, incapability for adjustment of it according to weight changes of a amputee person, inability for adapting the prosthetic foot to different surfaces to maintain balance and stability of the amputee person, inability for absorbing a wide range of forces vertically, horizontally and rotationally like a natural foot, lack of
  • This invention can be modular .Modularity, the possibility of prosthetic foot changes for changing the installation of different types of exchangeable 4-hole male/female corner adapter to adjust the center of gravity of the prosthetic foot, weight shifting, rotation, replacement of the male/female adapter, elimination of the unpleasant noises (Clicking-Squeaking) of the prosthetic foot, changing bumper with different densities ( soft - medium - hard ) according to the amputee weight and changing insoles with different sizes and activities.
  • the modular capability leads to more personalization for the amputee person .
  • the main goals of this invention are: Adjustment of the center of gravity, weight shifting, omitting the undesirable noises when walking, lowering the height limit, reducing the weight of the prosthetic foot, reducing the price, ease of work of the prosthetist, adjusting the prosthetic foot to be compatible with the developmental stages from childhood to adulthood, simple manufacturing and assembly of the prosthetic foot, adjusting the prosthetic foot to fit the weight of the amputee person, adapting the prosthetic foot with different levels to maintain balance and stability of the amputee, absorbing a wide range of vertical, horizontal and rotational forces like a natural foot, adjusting the prosthetic foot with walking, running and hiking activities like a natural foot.
  • prosthetic feet must duplicate the motions of the natural foot as much as possible. These motions include side to side stability at the toe section of the foot where weight can be exerted on each side of the foot.
  • the ankle joint must have torsional flexibility transverse to the up and down motion of the ankle which pivotally lowers and raises the foot. The added torsional motion of the joint in the artificial foot adds a degree of stress on the resilient pads (bumper) located between the members of the artificial foot which are not otherwise present in a foot that has limited motion in only the up and down direction relative to pivotable raising and lowering of the foot.
  • This invention has a moduar structure.
  • the modularity it is possible to change the prosthetic foot for changing the installation of four-hole adapters in accordance with the center of gravity of the prosthetic foot, change the types of bumpers according to the amputee person weight and change the type of insole with different activities and sizes . Modular capability leads to better personalization for people with amputee.
  • the upper part of the prosthetic foot has (1 ) four threaded holes (2) which are suitable for adjusting the center of gravity of the prosthetic foot, adjusting the weight shift of the prosthetic foot, adjusting the rotation of the prosthetic foot, and changing the type of male and female connection, by using various types of four- hole adapters (5-16-17-18-19-20-21 ) is installed to the upper part of the prosthetic foot (1 ) by four screws (3).
  • the possibility of selecting different types of four-hole adapters ( 5-16-17-18-19-20-21 ) for installation on the upper part of the prosthetic foot (1 ) leads to easy personalization and adjustment suitable for people with amputee.
  • Exchangeable rotating 4-hole male corner adapter (5) has the responsibility of setting the center of gravity of the prosthetic foot, set to shift weighting of the foot, adjusting the rotation of the prosthetic foot for the prosthetic foot, and do by using that, it is not needed to use a slider adapter to weight shifting & rotational or angular adapter.
  • the threaded piece (6) is attached to the threaded hole of the upper piece of the prosthetic foot (15). By rotating the threaded part (6) in a clockwise or counterclockwise direction, it changes the amount of rotation control in the vertical and horizontal axis of the prosthetic foot during stepping.
  • bumpers (8) are responsible for absorbing the impact and controlling the amount of rotation in the vertical and horizontal axis when the amputee person steps.
  • the upper part (1 ) and the middle part of the prosthetic foot (7) are connected by pins (9) and screws (10) in a way that they can move around the vertical and horizontal axis.
  • the bottom part of the prosthetic foot (11 ) can be selected proportional to the activity and the foot size of the amputee person and it is connected to the middle part with three threaded holes (12) and by three screws (13).
  • a bumper (14) is placed, which is responsible for absorbing the impact during the walking and stepping of the amputee person.
  • This invention has the advantage of changing different types of bumper with different densities ( soft - medium - hard ) according to the weight of the amputee person.
  • the flat and wide insole of the prosthetic foot has more contact surfaces with surfaces, which gives more stability to amputee people.
  • This prosthetic foot could ease of work for the prosthetist for the most appropriate personalization of the amputee person.
  • the prosthetic foot could be adapted with different surfaces to maintain the balance and stability of the amputee person. [0036] It can absorb a wide range of vertical, horizontal, and rotational forces like a natural foot.
  • the invention of this prosthetic foot increases stability and prevents the feet from moving away from each other.
  • FIG.1 This figure shows a perspective view of all components of the invention
  • FIG.2 This figure shows a perspective view of all components of the invention.
  • FIG.3 This figure shows a front view of all components of the invention.
  • FIG.4 This figure shows a side view of all components of the invention.
  • FIG.5 This figure shows a perspective view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
  • Fig.6 This figure shows a perspective view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
  • FIG.7 This figure shows a side view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
  • FIG.8 This figure shows a front view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
  • FIG.9 This figure shows a top view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
  • FIG.10 This figure shows a bottom view of the entire invention.
  • FIG.11 This figure shows a perspective view of the entire invention.
  • FIG.12 This figure shows a perspective view of the entire invention.
  • FIG.13 This figure shows a side view of the entire invention.
  • FIG.14 This figure shows a front view of the entire invention.
  • FIG.15 This figure shows a top view of the entire invention.
  • FIG.16 This figure shows a perspective view of the location of the bumper in the invention.
  • FIG.17 This figure shows a perspective view of the location of the bumper in the invention.
  • FIG.18 This figure shows the side view of the movement mechanism of the invention.
  • FIG.19 This figure shows the side view of the movement mechanism of the invention.
  • FIG.20 This figure shows a perspective view of exchangeable rotating 4-hole male corner adapter
  • FIG.21 This figure shows a top view of exchangeable rotating 4-hole male corner adapter
  • FIG.22 This figure shows a side view of exchangeable rotating 4-hole male corner adapter
  • Fig.23 This figure shows a top view of 4-hole Male pyramid adapter
  • FIG.24 This figure shows a perspective view of 4-Hole Male Pyramid adapter ( Standard )
  • FIG.25 This figure shows a side view of 4-Hole male pyramid adapter
  • FIG.26 This figure shows a top view of 4-Hole female pyramid adapter
  • FIG.27 This figure shows a side view of 4-Hole female pyramid adapter
  • FIG.28 This figure shows a top view of 4-Hole male pyramid offset adapter
  • FIG.29 This figure shows a side view of 4-Hole male pyramid offset adapter
  • FIG.30 This figure shows a top view of 4-Hole male pyramid offset adapter
  • FIG.31 This figure shows a side view of 4-Hole male pyramid offset adapter
  • FIG.32 This figure shows a top view of 4-Hole male pyramid adapter
  • FIG.33 This figure shows a side view of 4-Hole male pyramid adapter
  • FIG.34 This figure shows a top view of 4-Hole female pyramid adapter
  • FIG.35 This figure shows a side view of 4-Hole female pyramid adapter
  • This invention has application in prostheses of disabled people with foot amputation.
  • the invention is used to Foreshortened Prostheses (Stubbies) feet.
  • All bilateral leg amputees can greatly benefit from the use of stubbies during and after initial ambulatory rehabilitation, especially those with short residual limbs.
  • the elderly, physically unfit, diabetic, and/or those affected by vascular and/or cardiorespiratory conditions are also prime candidates for fitting. They can be beneficial to children as well, providing rehabilitative advantages during adolescence and saving parents the trouble of fitting the child with a new set of prostheses every time a growth spurt occurs.
  • NPL1 [0089]

Abstract

This invention is a prosthetic foot with the capability for adjusting the center of gravity and activity. Disabled people with foot amputation use prostheses to step. This invention can be modular. Modularity, the possibility of prosthetic foot changes for changing the installation of different types of exchangeable 4-hole male/female corner adapter to adjust the center of gravity of the prosthetic foot, weight shifting, rotation, replacement of the male/female adapter, elimination of the unpleasant noises (Clicking-Squeaking) of the prosthetic foot, changing bumper with different densities ( soft - medium - hard ) according to the amputee weight and changing insoles with different sizes and activities. The modular capability leads to more personalization for the amputee person.

Description

Description Title of Invention : |
[0001 ] LA Prosthetic Foot with Adjustable Center Of Gravity and Activity
Technical Field
[0002] This invention relates generally to prosthetic limbs. More specifically, the invention is related to Prostheses foot. More specifically, the invention is related to All bilateral leg amputees. More specifically, the invention is related to Foreshortened Prostheses (Stubbies) feet. Most specifically, the invention relates to a prosthetic foot with adjustable center of gravity and activity.
Background Art
[0003] Various types of prosthetic foot devices are available as substitutes for human feet. The basic requirements of an acceptable prosthetic foot are that it will provide a stable support for the amputee throughout a reasonable range of activities and permit the amputee to walk with a normal stride. To achieve this normal stride, the prosthetic foot must flex during walking as the foot continually moves through the heel-strike, foot-flat, and toe-off cycle. It must also, throughout this cycle, provide transverse stability particularly at toe-off, when the entire weight of the amputee is applied to the forward portion of the prosthetic foot. Prior art prosthetic feet typically are substantially transversely inflexible which interferes with side to side balancing when walking on uneven surfaces. Unlike the natural foot, these types of prosthetic foot assemblies do not sense nor correct themselves with this unevenness and an unanticipated sideways tilting of the foot at toe-off results in an imbalance at a critical portion of the stride. Amputees are no longer satisfied to sit in a wheelchair or to be content with a stilted, unnatural walking motion. An amputee often strives to duplicate physical activities which were conducted before the amputation. These activities may include vigorous physical activities such as running, playing basketball, and dancing.
[0004] WO/1998/053769 discloses a prosthetic foot assembly having improved resilient cushions and components for use by an amputee.
[0005] US00D782679S discloses a prosthetic trainer foot for use by an amputee. In the invention (patent) by the patent No. US00D782679S, which was registered in the year 2017 by the College Park Co., the SIDEKICKS™ prosthetic foot was revealed which has the capabilities of adjusting to the weight changes of the amputee person, adapting the prosthetic foot to different levels to maintain balance and stability of the amputee people, absorbing a wide range of vertebral forces vertically, horizontally and rotationally . Furthermore, this prosthetic foot has some disadvantages like the inability for adjustment of center of gravity, no weight shifting, no rotation of male/female adapter, no change of male/female adapter, height limit, high price, lack of proper personalization for the amputee people, lack of adjustment of the prosthetic foot to fit the developmental stages from childhood to adulthood, and an inability for simple manufacturing and assembly of the prosthetic foot .
[0006] Examples of prosthetic feet commercially available are the College Park® SIDEKICKS TM, College Park® VENTURE TM, College Park® TRIBUTE TM, College Park® TRUPER™, and College Park® TRUSTEP™. However, various aspects of prosthetic feet currently available could be improved to further enhance performance.
[0007] The design of the upper part of the prosthetic foot has not been observed in a way that can be able to adjust the center of gravity. Considering this defect, various types of sliding adapters have been used to adjust the center of gravity for the manufacturing and assembly of the prosthetic foot.
[0008] There are some disadvantages to use sliding adapters for adjustment of the center of gravity of the prosthesis:
Produces an unpleasant noise (Clicking-Squeaking) when the amputee walk
Prosthetic foot weight gain
Increasing prices of the prosthetic foot
Increasing the height of the prosthesis where the amputee person has a long amputation, it is not possible to use the sliding adapter due to excessive height increase.
[0009] Depending on the type of different activities and considering the design of the lower part of the prosthetic foot, amputated people must provide the prosthesis specific for that activity. Because the activity is not adjustable, personalization is challenging and increases the price of the prosthetic foot.
[0010] Prosthetic feet by the trademarks SIDEKICKS ‘VENTURE ‘TRIBUTE manufactured by College Park Co. (CPI) can not be configured and adjusted For all stages of development from childhood to adulthood, and this weakness leads to an increase the price of the prosthetic foot for the amputee during growth ages.
Summary of Invention
[0011 ] This invention is a prosthetic foot with the capability for adjusting the center of gravity and activity . Amputee people with foot amputation use prostheses to step. However, some factors prevent normal stepping and walking of the amputee person in interaction together, including failure to adjust the center of gravity of the prosthesis without the need for a sliding adapter, no weight shifting, no rotation of male/female adapter, no change of male/female adapter, height limit, unpleasant noises (Clicking-Squeaking) of the sliding adapter, high weight of the prosthetic foot, high price, lack of ease of work for a prosthetic expert, adjustment of the prosthetic foot according to growth stages from childhood to adulthood, lack of simple manufacturing and assembly of the prosthetic foot, incapability for adjustment of it according to weight changes of a amputee person, inability for adapting the prosthetic foot to different surfaces to maintain balance and stability of the amputee person, inability for absorbing a wide range of forces vertically, horizontally and rotationally like a natural foot, lack of adjustment of the prosthetic foot with walking, running and hiking activities like natural feet. This invention can be modular .Modularity, the possibility of prosthetic foot changes for changing the installation of different types of exchangeable 4-hole male/female corner adapter to adjust the center of gravity of the prosthetic foot, weight shifting, rotation, replacement of the male/female adapter, elimination of the unpleasant noises (Clicking-Squeaking) of the prosthetic foot, changing bumper with different densities ( soft - medium - hard ) according to the amputee weight and changing insoles with different sizes and activities. The modular capability leads to more personalization for the amputee person .
Technical Problem
[0012] The amputee in their feet use prostheses to walk but there is some disadvantages for the regular prostheses like: failure to adjust the center of gravity of the prosthesis without the need for a sliding adapter, no weight shifting, no rotation of male/female adapter, no change of male/female adapter, height limit, producing unpleasant noises (Clicking-Squeaking) during walking, high weight of the prosthetic foot, high price, lack of ease of use and application for the prosthetist, lack of adjustment of the prosthetic foot according to growth stages from childhood to adulthood, lack of simple manufacturing process and assembly of the prosthetic foot, failure to adjust prosthetic foot according to weight changes of amputee person, lack of adaptation of the prosthetic foot with different levels to maintain balance and stability of the amputee person, lack of absorption of a wide range of vertical, horizontal and rotational forces like a natural foot, lack of adjustment of the prosthetic foot with walking, running and hiking activities like a normal foot. According to the cases mentioned above, the prosthetic foot in interaction with the natural foot prevents natural walking in the amputee person.
[0013] The main goals of this invention are: Adjustment of the center of gravity, weight shifting, omitting the undesirable noises when walking, lowering the height limit, reducing the weight of the prosthetic foot, reducing the price, ease of work of the prosthetist, adjusting the prosthetic foot to be compatible with the developmental stages from childhood to adulthood, simple manufacturing and assembly of the prosthetic foot, adjusting the prosthetic foot to fit the weight of the amputee person, adapting the prosthetic foot with different levels to maintain balance and stability of the amputee, absorbing a wide range of vertical, horizontal and rotational forces like a natural foot, adjusting the prosthetic foot with walking, running and hiking activities like a natural foot.
[0014] In order to be commercially acceptable, prosthetic feet must duplicate the motions of the natural foot as much as possible. These motions include side to side stability at the toe section of the foot where weight can be exerted on each side of the foot. The ankle joint must have torsional flexibility transverse to the up and down motion of the ankle which pivotally lowers and raises the foot. The added torsional motion of the joint in the artificial foot adds a degree of stress on the resilient pads (bumper) located between the members of the artificial foot which are not otherwise present in a foot that has limited motion in only the up and down direction relative to pivotable raising and lowering of the foot.
Solution to Problem
[0015] This invention has a moduar structure. By using the modularity, it is possible to change the prosthetic foot for changing the installation of four-hole adapters in accordance with the center of gravity of the prosthetic foot, change the types of bumpers according to the amputee person weight and change the type of insole with different activities and sizes . Modular capability leads to better personalization for people with amputee.
[0016] The upper part of the prosthetic foot has (1 ) four threaded holes (2) which are suitable for adjusting the center of gravity of the prosthetic foot, adjusting the weight shift of the prosthetic foot, adjusting the rotation of the prosthetic foot, and changing the type of male and female connection, by using various types of four- hole adapters (5-16-17-18-19-20-21 ) is installed to the upper part of the prosthetic foot (1 ) by four screws (3). The possibility of selecting different types of four-hole adapters ( 5-16-17-18-19-20-21 ) for installation on the upper part of the prosthetic foot (1 ) leads to easy personalization and adjustment suitable for people with amputee. Exchangeable rotating 4-hole male corner adapter (5) has the responsibility of setting the center of gravity of the prosthetic foot, set to shift weighting of the foot, adjusting the rotation of the prosthetic foot for the prosthetic foot, and do by using that, it is not needed to use a slider adapter to weight shifting & rotational or angular adapter.
[0017] The threaded piece (6) is attached to the threaded hole of the upper piece of the prosthetic foot (15). By rotating the threaded part (6) in a clockwise or counterclockwise direction, it changes the amount of rotation control in the vertical and horizontal axis of the prosthetic foot during stepping.
[0018] Between the upper part (1), threaded piece (6), and the middle part of the prosthetic foot (7), four bumpers (8) have been selected and placed according to the weight of the amputee person. The bumper (8) is responsible for absorbing the impact and controlling the amount of rotation in the vertical and horizontal axis when the amputee person steps.
[0019] The upper part (1 ) and the middle part of the prosthetic foot (7) are connected by pins (9) and screws (10) in a way that they can move around the vertical and horizontal axis.
[0020] The bottom part of the prosthetic foot (11 ) can be selected proportional to the activity and the foot size of the amputee person and it is connected to the middle part with three threaded holes (12) and by three screws (13).
[0021] Between the middle part (7) and the bottom part (11 ), a bumper (14) is placed, which is responsible for absorbing the impact during the walking and stepping of the amputee person.
Advantageous Effects of Invention [0022] Using the modularity of the prosthetic foot could be possible for more personalization for the amputee person.
[0023] The possibility of installing different types of four-hole adapters to adjust the center of gravity and rotation in the horizontal axis of the prosthetic foot leads to more personalization for the amputee.
[0024] The weight shifting ability of this prosthetic foot leads to more personalization of the prosthetic foot for the amputee.
[0025] The rotation ability of this prosthetic foot leads to more personalization of that for the amputee person.
[0026] The possibility of installing all types of female/male exchangeable 4-hole adapters leads to a more suitable personalization of the prosthetic foot for the amputee.
[0027] This invention has the advantage of changing different types of bumper with different densities ( soft - medium - hard ) according to the weight of the amputee person.
[0028] For this invention, it is possible to change different types of insoles considering different activities and sizes for the amputee.
[0029] With the ability to change the insole in this invention, it is possible to change the insole size for the amputee in their growth ages.
[0030] The flat insole gives the prosthetic foot more flexibility.
[0031] The flat and wide insole of the prosthetic foot has more contact surfaces with surfaces, which gives more stability to amputee people.
[0032] People with amputee who have more hesitation when walking can feel more stability and comfort.
[0033] This prosthetic foot could ease of work for the prosthetist for the most appropriate personalization of the amputee person.
[0034] It has simple manufacturing and assembly steps.
[0035] The prosthetic foot could be adapted with different surfaces to maintain the balance and stability of the amputee person. [0036] It can absorb a wide range of vertical, horizontal, and rotational forces like a natural foot.
[0037] It could be adjustable to activities like walking, running, and hiking activities like a natural foot.
[0038] It has a lighter structure due to removing the sliding adapter in the center of gravity adjustment.
[0039] It has a lower height due to removing the sliding adapter in adjusting the center of gravity.
[0040] Its cost is affordable due to the removal of the sliding adapter in adjusting the center of gravity.
[0041] Due to its modularity, it could be possible to make some changes by cost efficient or minimize amount of payment, and there is no need to replace the prosthetic foot, especially for the amputee who are in their growth ages.
[0042] It can adjust the center of gravity of the prosthetic foot without the need to a sliding adapter
[0043] Because of not using the sliding adapter in adjusting the prosthetic foot center of gravity, the unpleasant noises ( Clicking-Squeaking) of the prosthetic foot during walking of the amputee person can be eliminated.
[0044] The invention of this prosthetic foot increases stability and prevents the feet from moving away from each other.
Brief Description of Drawings
[0045] Fig.1 This figure shows a perspective view of all components of the invention
[0046] Fig.2 This figure shows a perspective view of all components of the invention.
[0047] Fig.3 This figure shows a front view of all components of the invention.
[0048] Fig.4 This figure shows a side view of all components of the invention.
[0049] Fig.5 This figure shows a perspective view of the entire invention with an exchangeable rotating 4-hole male corner adapter. [0050] Fig.6 This figure shows a perspective view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
[0051] Fig.7 This figure shows a side view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
[0052] Fig.8 This figure shows a front view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
[0053] Fig.9 This figure shows a top view of the entire invention with an exchangeable rotating 4-hole male corner adapter.
[0054] Fig.10 This figure shows a bottom view of the entire invention.
[0055] Fig.11 This figure shows a perspective view of the entire invention.
[0056] Fig.12 This figure shows a perspective view of the entire invention.
[0057] Fig .13 This figure shows a side view of the entire invention.
[0058] Fig.14 This figure shows a front view of the entire invention.
[0059] Fig .15 This figure shows a top view of the entire invention.
[0060] Fig.16 This figure shows a perspective view of the location of the bumper in the invention.
[0061] Fig.17 This figure shows a perspective view of the location of the bumper in the invention.
[0062] Fig.18 This figure shows the side view of the movement mechanism of the invention.
[0063] Fig.19 This figure shows the side view of the movement mechanism of the invention.
[0064] Fig.20 This figure shows a perspective view of exchangeable rotating 4-hole male corner adapter
[0065] Fig.21 This figure shows a top view of exchangeable rotating 4-hole male corner adapter
[0066] Fig.22 This figure shows a side view of exchangeable rotating 4-hole male corner adapter [0067] Fig.23 This figure shows a top view of 4-hole Male pyramid adapter
( Standard )
[0068] Fig.24 This figure shows a perspective view of 4-Hole Male Pyramid adapter ( Standard )
[0069] Fig.25 This figure shows a side view of 4-Hole male pyramid adapter
( Standard )
[0070] Fig.26 This figure shows a top view of 4-Hole female pyramid adapter
( Standard )
[0071] Fig.27 This figure shows a side view of 4-Hole female pyramid adapter
( Standard )
[0072] Fig.28 This figure shows a top view of 4-Hole male pyramid offset adapter
( Aiagonal )
[0073] Fig.29 This figure shows a side view of 4-Hole male pyramid offset adapter
( Aiagonal )
[0074] Fig.30 This figure shows a top view of 4-Hole male pyramid offset adapter
( Axial )
[0075] Fig.31 This figure shows a side view of 4-Hole male pyramid offset adapter
( Axial )
[0076] Fig.32 This figure shows a top view of 4-Hole male pyramid adapter
( Rotatable )
[0077] Fig.33 This figure shows a side view of 4-Hole male pyramid adapter
( Rotatable )
[0078] Fig.34 This figure shows a top view of 4-Hole female pyramid adapter
( Rotatable )
[0079] Fig.35 This figure shows a side view of 4-Hole female pyramid adapter
( Rotatable )
Description of Embodiments
[0080]
Industrial Applicability [0081] This invention has application in prostheses of disabled people with foot amputation.
[0082] the invention is used to Foreshortened Prostheses (Stubbies) feet.
[0083] All bilateral leg amputees can greatly benefit from the use of stubbies during and after initial ambulatory rehabilitation, especially those with short residual limbs. The elderly, physically unfit, diabetic, and/or those affected by vascular and/or cardiorespiratory conditions are also prime candidates for fitting. They can be beneficial to children as well, providing rehabilitative advantages during adolescence and saving parents the trouble of fitting the child with a new set of prostheses every time a growth spurt occurs.
Reference Signs List
[0084]
Reference to Deposited Biological Material
[0085]
Sequence Listing Free Text
[0086]
Citation List
[0087]
Patent Literature
[0088] PTL1 :
Non Patent Literature
[0089] NPL1 :

Claims

Claims
[Claim 1] [It is A Prosthetic Foot with Adjustable Center Of Gravity and Activity system that is modular.
This system consists of the following components:
- The upper part of the toe
- The piece between the toes
- The lower part of the toe
- Five bumpers
- Pins and screws
- The Thread piece
- Different types of 4-hole adapters
- Exchangeable rotating 4-hole male corner adapter
- Exchangeable rotating 4-hole adapter
[Claim 2] According to claim 1 , a prosthetic foot system that is modular is used. By using the modular method, it could be possible to modify the prosthetic foot with regards to change of the installation exchangeable 4-hole male corner adapter to fit the center of gravity of the prosthetic foot, weight shifting of the prosthetic foot, prosthetic foot rotation, installation of exchangeable 4-hole female/male adapter, change the types of bumpers according to the amputee person weight and finally change the types of insoles with different activities and sizes. The modular approach leads to an appropriate personalization for the amputee person.
[Claim 3] According to claim 1 , the upper part of the Prosthetic foot has four threaded holes that considering their proportions to the adjustment of the center of gravity of the prosthetic foot, weight shifting of the prosthetic foot, rotation of the prosthetic foot, different types of 4-hole adapters are installed through four screws to the upper part of the foot.
[Claim 4] According to claim No. 3, the possibility of selecting a variety of 4-hole adapters for installation on the upper part of the prosthetic foot can facilitate the correct personalization for people with amputee.
[Claim 5] According to claim No.3, the exchangeable 4-hole male corner adapter is responsible for changing the center of gravity of the prosthetic foot , and there is no need to use a sliding adapter.
[Claim 6] According to claim No.3, the exchangeable 4-hole male corner adapter is responsible for changing the weight shifting of the prosthetic foot , and there is no need to use a sliding adapter.
[Claim 7] According to claim No.5, it prosthetic foot a lower height due to removing the sliding adapter in adjusting the center of gravity.
[Claim 8] According to claim No.5, the prosthetic foot a lighter structure due to removing the sliding adapter in the center of gravity adjustment.
[Claim 9] According to claim No.1 , the threaded part is connected to the threaded hole of the upper part of the prosthetic foot . When stepping, rotating the threaded piece in a clockwise or counterclockwise direction can change the amount of rotation control in the vertical and horizontal axes.
[Claim 10] According to claim No.1 , also according to the amputee person's weight, between the upper part, the threaded part, and the part between the prosthetic foot , four bumpers are selected and placed.
[Claim 11 ] According to claim No.10, the bumper is responsible for absorbing the impact and controlling the rotation in the vertical and horizontal axis during stepping of the amputee person.
[Claim 12] According to claim No.10, the bumper of the prosthetic foot is selected according to the activities of the amputee person.
[Claim 13] According to claim No.1 , the upper part and the part between the prosthetic foot are connected by pins and screws in a way that they can move around the vertical and horizontal axes.
[Claim 14] According to claim No.1 , the lower part of the prosthetic foot is selected according to the size of the amputee person's foot and is connected to the middle part, which has three threaded holes, by using three screws.
[Claim 15] According to claim No.1 , the lower part of the prosthetic foot is selected according to the activities of the amputee person's and is connected to the middle part, which has three threaded holes, by using three screws.
[Claim 16] According to claim No.1 , a bumper is placed between the part between the prosthetic foot and the lower part of the prosthetic foot. The bumper is responsible for absorbing the impact during the stepping of the amputee person.
[Claim 17] Different types of exchangeable 4-hole female I male adapters are connected to the prosthetic foot.
[Claim 18] Different types of exchangeable 4-hole female I male corner adapters are connected to the prosthetic foot.
[Claim 19] According to claim No.3, the exchangeable 4-hole Female/ male adapter rotatable is responsible for rotation configuration of the prosthetic foot .
[Claim 20] It is a prosthetic foot implant system that is modular.
PCT/IB2021/057510 2020-08-17 2021-08-15 A prosthetic foot with adjustable center of gravity and activity WO2022038481A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IR139950140003004558 2020-08-17
IR13993004560 2020-08-17

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180116825A1 (en) * 2016-10-27 2018-05-03 Roadrunnerfoot Engineering S.R.L. Prosthetic foot

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180116825A1 (en) * 2016-10-27 2018-05-03 Roadrunnerfoot Engineering S.R.L. Prosthetic foot

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELEXIS C. BARAL ET AL.: "Fracture of the femoral adapter bolt and taper adapter in a modern rotating platform knee arthroplasty", ARTHROPLASTY TODAY, 3 March 2017 (2017-03-03), pages 229 - 233, XP055908625 *

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