CN114466633A - Foot of artificial limb and artificial limb - Google Patents
Foot of artificial limb and artificial limb Download PDFInfo
- Publication number
- CN114466633A CN114466633A CN202080070012.5A CN202080070012A CN114466633A CN 114466633 A CN114466633 A CN 114466633A CN 202080070012 A CN202080070012 A CN 202080070012A CN 114466633 A CN114466633 A CN 114466633A
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- 238000003780 insertion Methods 0.000 claims abstract description 20
- 230000037431 insertion Effects 0.000 claims abstract description 20
- 210000003127 knee Anatomy 0.000 claims abstract description 15
- 210000003414 extremity Anatomy 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000002266 amputation Methods 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Classifications
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- 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
- A61F2/78—Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
- A61F2/80—Sockets, e.g. of suction type
-
- 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
-
- 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
- A61F2002/6642—Heels
Landscapes
- Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Prostheses (AREA)
Abstract
The invention provides a foot of a prosthesis and the prosthesis. A foot of a prosthetic limb includes a heel part provided with a first fixing part and a connecting part connected to a socket or knee of the prosthetic limb, and a toe part having a second fixing part combined with the first fixing part and an insertion hole inserted into an end part of the heel part on a prosthetic toe side, the first and second fixing parts being formed to be combined to be capable of adjusting a positional relationship of the first and second fixing parts in a long side direction of the foot.
Description
Technical Field
The invention relates to a foot of a prosthesis and a prosthesis.
Background
Prostheses are known which have various functions and structures to reduce the burden on the wearing user and perform a more natural walking motion (for example, see patent documents 1 and 2).
Documents of the prior art
Patent document
Patent document 1: japanese Kohyo publication No. 2017-517313
Patent document 2: japanese Kokai publication 2017-522102
Disclosure of Invention
Problems to be solved by the invention
However, since the size of the foot of each user is different, it is necessary to fabricate a prosthesis for each user according to the size of the foot, which causes problems of fabrication time, cost, and the like.
The present invention has been made in view of these circumstances, and an object thereof is to enable the size of a foot portion of a prosthesis to be easily changed.
Means for solving the problems
A first aspect of the present invention provides a foot of a prosthesis, including a heel portion provided with a first anchoring portion and a connecting portion connected to a socket or a knee of the prosthesis, and a toe portion having a second anchoring portion joined to the first anchoring portion and an insertion hole inserted into an end portion of the heel portion on a toe side of the prosthesis, the first anchoring portion and the second anchoring portion being joined so that a positional relationship of the first anchoring portion and the second anchoring portion in a longitudinal direction of the foot can be adjusted.
At least one of the heel portion and the toe portion may have a symmetrical shape corresponding to a common shape of the left and right shoes of the prosthetic user. The first fixing portion may have a coupling member in which a plurality of hole portions are arranged in a longitudinal direction of the foot portion, and the second fixing portion may have an attachment portion to be attached to at least one of the hole portions of the first fixing portion.
The toe portion has elasticity and may further have one or more adjustment holes different from the insertion hole. At least a portion of one or more of the adjustment holes may extend in a direction parallel to the insertion hole. The first fixing portion is mounted to the connection portion, and the first fixing portion may be made of a metal having a lower strength than the connection portion.
The heel portion may have: a first plate portion provided with the connecting portion and the first fixing portion on a first surface; a second plate portion provided on a second surface side of the first plate portion opposite to the first surface. An end portion of the first plate portion may be inserted into the insertion hole up to a position determined based on a positional relationship between the first fixing portion and the second fixing portion.
The first plate portion is made of a material having elasticity, and the second plate portion has a curved surface and is formed such that the distance from the end portion on the heel side to the first plate portion is larger than the distance from the end portion on the toe side to the first plate portion.
A second aspect of the invention provides a prosthesis comprising: a socket mounted to a portion of a user's body; and a foot of the prosthesis of the first aspect connected to the socket of the prosthesis or a knee connected to the socket.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the present invention, the size of the foot portion of the prosthesis can be easily changed.
Drawings
Fig. 1 shows a structural example of a prosthesis 10 according to the present embodiment.
Fig. 2 shows a structural example of the foot 40 according to the present embodiment.
Fig. 3 shows an example of a sectional view of the foot 40 according to the present embodiment.
Fig. 4 shows a structural example of the heel 100 shown in fig. 2 in a state removed from the toe 200.
Fig. 5 shows one example of the cross-sectional shapes of the heel covering part 142 and the toe part 200 according to the present embodiment.
Fig. 6 shows an example of a plan view of the foot 40 according to the present embodiment.
Fig. 7 shows an example of a right side view of the foot 40 according to the present embodiment.
Fig. 8 shows an example of a left side view of the foot 40 according to the present embodiment.
Fig. 9 shows an example of a bottom view of the foot 40 according to the present embodiment.
Fig. 10 shows an example of a front view of the foot 40 according to the present embodiment.
Fig. 11 shows an example of a rear view of the foot 40 according to the present embodiment.
Detailed Description
< structural example of prosthesis 10 >
Fig. 1 shows a structural example of a prosthesis 10 according to the present embodiment. The prosthesis 10 is used, for example, to compensate for lost walking function and appearance of the foot of the user. It should be noted that fig. 1 shows an example of a thigh prosthesis used by a user with a thigh amputated, but the invention is not limited thereto and the prosthesis 10 may also be a calf prosthesis. The prosthesis 10 includes a socket 20, a knee 30, and a foot 40.
The socket 20 is mounted to a portion of the user's body. Socket 20 is mounted on the user's foot, for example, corresponding to the amputation end of the user. The socket 20 illustratively contains a resin or the like.
The prosthesis 10 described above is known to have a variety of functions and configurations. For example, a prosthesis 10 equipped with a CPU or the like and having a function of detecting a walking motion of a user and assisting walking is known. Such a prosthesis 10 must be made for each user according to the size of the user's foot. Therefore, the performance of the prosthesis 10 is increased, which may result in a need to increase the manufacturing time and cost of the prosthesis 10.
Therefore, the foot section 40 of the present embodiment is configured to be adjustable in size according to the size of the foot of the user, thereby reducing the time and cost for producing the prosthesis 10. Such a foot 40 will be described below.
< example of foot 40 Structure >
Fig. 2 shows a structural example of the foot 40 according to the present embodiment. Fig. 3 illustrates an example of a cross-sectional view a-a of foot 40 shown in fig. 2. In fig. 2 and 3, three axes orthogonal to each other are denoted as an X axis, a Y axis, and a Z axis, respectively. Foot 40 includes a heel 100 and a toe 200. Fig. 2 and 3 show an example in which the toe portion 200 is inserted into the heel portion 100 and the toe portion 200 are integrated to constitute the foot 40. Fig. 4 shows a structural example of a state where the toe 200 is removed from the heel 100. Such a toe portion 200 is fixed in an adjustable positional relationship in the longitudinal direction of the foot 40.
The heel portion 100 is connected to the socket 20 or knee 30 of the prosthesis 10. Heel section 100 is combined with toe section 200 to form foot section 40. Heel section 100 includes first plate section 110, connecting section 120, first fixing section 130, and second plate section 140.
The first plate portion 110 is a plate-like member extending in the long-side direction from the heel toward the toe of the foot 40. Fig. 2 and 3 show an example in which the longitudinal direction of the foot 40 is a direction substantially parallel to the X axis, and the short-side direction of the foot 40 is a direction substantially parallel to the Y axis. The first plate portion 110 is made of a material having elasticity, such as carbon. The first plate portion 110 is provided with a connecting portion 120 and a first fixing portion 130 on a first surface thereof. Wherein the first surface is a surface of the first plate portion 110 facing the receiving cavity 20.
The connecting portion 120 is connected to the socket 20 or knee 30 of the prosthesis. The connecting portion 120 is provided, for example, at a position shifted from the center of the first plate portion 110 toward the heel side in the longitudinal direction of the first plate portion 110. As an example, the connection portion 120 is provided at the end of the heel side of the first plate portion 110. The connecting portion 120 is connected to the socket 20 or the knee 30 of the prosthesis, for example, such that the first plate portion 110 is rotatable about an axis substantially parallel to the short-side direction. As a result, the toe side of the first plate portion 110 can move in the vertical direction, for example, in the Z-axis direction.
Thus, connecting portion 120 connects receiving cavity 20 or knee portion 30 and first plate portion 110 while allowing first plate portion 110 to move. Since such a connection portion 120 may carry several times the weight of the user, the connection portion 120 is preferably made of a high-strength material. As one example, the connection portion 120 is made of a material including titanium.
The first fixing portion 130 is a portion of a member for combining the heel 100 and the toe 200. The first fixing portion 130 is mounted on the first plate portion 110 and/or the connecting portion 120. Fig. 2 and 3 show an example in which the first fixing portion 130 is installed on the toe side of the link portion 120. The first fixing portion 130 is preferably made of a material that is easy to process, for example, a metal having a strength lower than that of the connecting portion 120 as an example, and the first fixing portion 130 includes aluminum.
The first fixing portion 130 includes, for example, a coupling member 134 in which a plurality of holes 132 are arranged in the longitudinal direction of the foot portion 40. Fig. 2 and 3 show an example of the joint member 134, the joint member 134 having a plane substantially parallel to the XZ plane, and a plurality of hole portions 132 arranged in a direction substantially parallel to the X axis. As one example, the first fixing portion 130 is provided with two such coupling members 134. In this case, the two coupling members 134 are disposed substantially in parallel, and a cross section substantially parallel to the YZ plane of the first fixing portion 130 has a U-shape.
The second plate portion 140 is disposed on a second surface side opposite to the first surface of the first plate portion 110. For example, the toe side end of the second plate portion 140 is fixed to the first plate portion 110 and extends toward the heel side in the long-side direction of the foot 40. The second plate portion 140 has a curved surface formed such that the end on the heel side is located at a greater distance from the first plate portion 110 than the end on the toe side is located at the first plate portion 110.
The second plate portion 140 is preferably made of a material having elasticity such as carbon, for example, as with the first plate portion 110. For example, when a load is applied from socket 20 or knee 30 to heel portion 100 substantially parallel to the-Z direction, which is a vertical direction, first plate portion 110 and/or second plate portion 140 become bent. In such a heel section 100, the distance between the first plate section 110 and the second plate section 140 in the heel side varies depending on the load, and the impact by the load can be absorbed and alleviated.
The second plate portion 140 has a heel covering portion 142 at the end of the heel side. The heel covering 142 is a portion of the foot 40 that contacts the ground. The heel covering portion 142 is formed in the same shape as the shape of the user's heel, for example. The heel cover 142 is made of a material having elasticity. As one example, the heel cover 142 is made of a material comprising silicone rubber.
The toe 200 and heel covering 142 are likewise part of the ground-contacting portion of the foot 40. The toe portion 200 is detachably constructed with the heel portion 100 described above. As shown in fig. 4, the user inserts the toe-side end of the prosthesis 10 in the heel portion 100 into the toe portion 200 which is not coupled with the heel portion 100, and then may make the heel portion 100 and the toe portion 200 assume a coupled state with each other by inserting the front end of the second fixing portion 220 into any one of the plurality of hole portions 132 formed in the coupling member 134, as shown in fig. 3.
The toe portion 200 is formed in the same shape as the shape of the user's toe, for example. The toe portion 200 is made of a material having elasticity. As one example, the toe 200 is made of a material comprising silicone rubber. The toe portion 200 has an insertion hole 210 and a second fixing portion 220.
In the insertion hole 210, the toe-side end of the prosthesis 10 in the heel portion 100 is inserted. Fig. 2 and 3 show an example of inserting the toe-side end of the first plate portion 110 into the insertion hole 210. Alternatively, the second plate portion 140 may be formed to extend from the first plate portion 110 to the toe side, and the toe side end of the second plate portion 140 may be inserted into the insertion hole 210.
The second fixing portion 220 is a portion combined with the first fixing portion 130, and is fixed to the toe portion 200. The first fastening part 130 of the heel 100 and the second fastening part 220 of the toe 200 are coupled to each other so that the positional relationship between the first fastening part 130 and the second fastening part 220 in the longitudinal direction of the foot 40 can be adjusted.
For example, the second fixing portion 220 has a mounting portion 222, and the mounting portion 222 is mounted to at least one hole portion 132 of the plurality of hole portions 132 of the first fixing portion 130. As one example, the mounting portion 222 is a rod-shaped member bent in an L shape. Fig. 2 and 3 show an example in which the first fixing portion 130 has two coupling members 134 and the second fixing portion has two mounting portions 222 corresponding to the two coupling members 134. In this case, one mounting portion 222 is inserted and mounted in the hole portion 132 of the corresponding one coupling member 134, and the other mounting portion 222 is inserted and mounted in the hole portion 132 of the corresponding other coupling member 134.
Further, it is recommended that the insertion direction of the hole portion 132 corresponding to one mounting portion 222 is different from the insertion direction of the hole portion 132 corresponding to the other mounting portion 222. Fig. 2 and 3 show examples in which the insertion directions of the hole portions 132 of the two mounting portions 222 are opposite to each other. Accordingly, even if an impact or the like is applied to the foot 40 from the outside, the first anchor 130 and the second anchor 220 can be prevented from being disconnected from each other.
Further, since the hole parts 132 are aligned in the longitudinal direction in the coupling member 134 of the first fixing part 130, if the hole part 132 to which the mounting part 222 is mounted is changed, the distance between the first fixing part 130 and the second fixing part 220 can be changed. Thus, the first fixing portion 130 and the second fixing portion 220 can be fixed by adjusting the positional relationship in the length direction of the heel 100 and the toe 200.
Wherein the heel covering portion 142 and the toe portion 200 are formed in the same shape as the user's heel and toe. Therefore, if the positional relationship in the long-side direction of the heel section 100 and the toe section 200 is adjusted, the positional relationship in the long-side direction of the heel covering section 142 and the toe section 200 is also adjusted, so that the length in the long-side direction of the foot section 40 can also be adjusted. For example, the foot 40 can wear shoes owned by the user by adjusting the distance between the heel covering part 142 and the toe part 200 to a length corresponding to the size of the user's foot.
In this way, the intervals between the plurality of hole portions 132 arranged in the coupling member 134 are the length unit for adjusting the length of the foot portion 40, and therefore, it is preferable to set them at predetermined intervals. For example, it is desirable that they be arranged at each constant multiple of a predetermined length so that they can be easily changed corresponding to the size of the feet of a plurality of different users. As an example, the plurality of hole portions 132 are arranged every 5mm in the longitudinal direction.
Further, the insertion hole 210 preferably has a depth into which the toe-side end of the heel portion 100 can be inserted even if the distance between the heel covering portion 142 and the toe portion 200 is the shortest distance within the adjustment range. Then, for example, the toe-side end of the first plate portion 110 is inserted into the insertion hole 210 up to a position determined based on the positional relationship between the first fixing portion 130 and the second fixing portion 220.
As described above, the foot 40 according to the present embodiment can be easily changed in size according to the size of the user's foot. Therefore, it is not necessary to manufacture a plurality of types of feet corresponding to each user, and for example, it is possible to correspond to a plurality of users whose feet are different in size using only one type of foot 40, so that it is possible to provide the prosthesis 10 with reduced costs. In addition, conventional prosthetic feet are very tight in size to fit, and sometimes difficult to fit. In contrast, since the foot 40 of the present embodiment can be changed in size, the size can be reduced when wearing shoes, and wearing is easier, and the size can be optimized to the size of the shoe by first wearing the shoe and then increasing the size, and the strength of wearing the shoe can be reduced.
In the above-described foot section 40 according to the present embodiment, an example has been described in which the mounting portion 222 is a rod-shaped member bent in an L shape, but the present invention is not limited thereto. For example, the mounting portion 222 may have a plate-like member having a through hole and a screw. In this case, the through hole of the mounting portion 222 is screwed with the hole portion 132 of the first fixing portion 130 to couple the first fixing portion 130 and the second fixing portion 220. In addition, a screw may be formed in the through hole of the mounting portion 222 or the hole portion 132 of the first fixing portion 130, and alternatively, the mounting portion 222 may further have a nut engaged with the screw.
In the foot 40 of the present embodiment, the example in which the first fixing portion 130 has the plurality of holes 132 has been described, but the present invention is not limited to this. For example, the first fixing portion 130 may be formed with an elliptical hole 132 having a major axis in the longitudinal direction. In this case, the mounting portion 222 includes a plate-like member provided with a through hole, a screw, and a nut, and the first fixing portion 130 and the second fixing portion 220 are coupled to each other by screwing the through hole of the mounting portion 222 and the hole portion 132 of the first fixing portion 130. In this case, the first fixing portion 130 and the second fixing portion 220 can steplessly adjust the distance in the longitudinal direction.
In the above-described foot portion 40 according to the present embodiment, an example has been described in which the first fixing portion 130 has a plurality of hole portions 132, and the second fixing portion 220 has the attachment portion 222 attached to the hole portions 132. But is not limited thereto. For example, the second fixing portion 220 may have a plurality of hole portions 132, and the first fixing portion 130 may have a mounting portion 222 mounted in the hole portions 132.
The first fixing portion 130 and the second fixing portion 220 may be any members that can be adjustably coupled in their positional relationship. For example, the first fixing portion 130 may have a rail extending in the longitudinal direction, and the second fixing portion 220 may have a tire movable on the rail, a stopper fixing the positions of the rail and the tire, and the like.
In the foot part 40 according to the above embodiment, the toe part 200 may further have an adjustment hole 230. The adjustment holes 230 are recesses or through openings different from the insertion holes 210, and one or more are provided in the toe portion 200. Such a toe portion 200 is made of a material having elasticity, and by forming the adjustment hole, the shape can be easily deformed by a slight external force. Therefore, the user's shoe can be easily put on the toe portion 200 regardless of the width of the shoe.
It should be noted that such adjustment holes 230 may be formed at a predetermined position, an arbitrary position, etc. of the toe portion 200. Further, it is preferable that the adjustment hole 230 is formed at the side of the toe portion 200 to have elasticity. Fig. 2 and 3 illustrate examples in which at least a portion of one or more adjustment holes 230 are recesses extending in a direction substantially parallel to insertion hole 210.
As described above, the heel covering part 142 and the toe part 200 according to the present embodiment are made of a material containing silicon rubber, and formed in the same shape as the user's heel and toe, as one example. Such a heel covering portion 142 and the vicinities of the left and right sides of the toe portion 200 may also be formed thick. In this way, by increasing the thickness of the heel covering part 142 and the left and right sides of the toe part 200, stability with respect to the footwear landing, impact on the sides of the footwear, and the like can be improved.
In the foot 40 according to the above-described embodiment, at least one of the heel 100 and the toe 200 preferably has a symmetrical shape corresponding to a shape common to left and right shoes of a user of the prosthesis 10. For example, at least one of the heel 100 and the toe 200 has a symmetrical shape with respect to a plane substantially parallel to the XZ plane. In addition, regarding the heel portion 100, it is preferable that only the shape of the heel covering portion 142 is a symmetrical shape even if the shape of the entire heel portion 100 is not a symmetrical shape. Such a target shape will be described below with reference to the drawings.
< description of the target shape of the heel covering part 142 and the toe part 200 >
Fig. 5 shows one example of the cross-sectional shapes of the heel covering part 142 and the toe part 200 according to the present embodiment. Fig. 5 shows an example of a cross-sectional view of the foot 40 in a plane that is substantially parallel to the XY plane, which is a plane that is substantially parallel to the ground. In fig. 5, one example of the cross-sectional shape of a right foot of a person is shown as right foot shape 410, and one example of the cross-sectional shape of a left foot of a person is shown as left foot shape 420.
The overlapping area when the right foot shape 410 and the left foot shape 420 overlap is indicated by oblique lines as a common shape 430. The common shape 430 has a shape substantially symmetrical with respect to the center line a-a in the longitudinal direction. Although fig. 5 is an example of a cross-sectional shape, even if the left and right feet of a human are three-dimensionally shaped, similarly, the common shape of the left and right feet is almost symmetrical with respect to a plane substantially parallel to the XZ plane through the center line a-a.
The heel covering portion 142 and the toe portion 200 shown in fig. 5 have a shape corresponding to such a common shape 430. Since the common shape 430 has a symmetrical shape, the shape of the heel covering portion 142 and the toe portion 200 is also symmetrical. Thus, the heel cover 142 and the toe 200 have symmetrical shapes corresponding to the shape common to left and right shoes of a user of the prosthesis 10.
In this way, the foot 40 can correspond to both the right foot and the left foot by eliminating the difference between the left and right sides of the heel covering part 142 and the toe part 200 as the target shape. Thus, the foot 40 may use more common parts regardless of side-to-side, which may save cost and labor in manufacturing the prosthetic limb 10.
< example of six-side view of foot 40 >
Fig. 6 to 11 show six side views of the foot 40 according to the present embodiment. The foot portion 40 shown in fig. 6 to 11 shows an example of the structure in which the connecting portion 120 is omitted. Fig. 6 shows an example of a plan view of the foot 40 according to the present embodiment. Fig. 7 shows an example of a right side view of the foot 40 according to the present embodiment. Fig. 8 shows an example of a left side view of the foot 40 according to the present embodiment. Fig. 9 shows an example of a bottom view of the foot 40 according to the present embodiment. Fig. 10 shows an example of a front view of the foot 40 according to the present embodiment. Fig. 11 shows an example of a rear view of the foot 40 according to the present embodiment.
The present invention has been described above with reference to the embodiments, but the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the present invention. For example, all or part of the apparatus may be functionally or physically distributed and integrated in any unit. In addition, the embodiments of the present invention also include a new embodiment resulting from any combination of the plurality of embodiments. The effects of the new embodiment produced by the combination also have the effects of the original embodiment.
Description of the symbols
10 artificial limb
20 receiving chamber
30 knee
40 feet
50 shoes
100 heel part
110 first plate part
120 connecting part
130 first fixed part
132 hole part
134 combination component
140 second plate part
142 heel covering portion
200 toe part
210 into the hole
220 second fixed part
222 mounting part
230 adjustment hole
410 right foot shape
420 left foot shape
430 have a common shape.
Claims (10)
1. A foot of a prosthetic limb comprising a heel portion and a toe portion,
the heel part is provided with a first fixing part and a connecting part, the connecting part is connected with the receiving cavity or the knee part of the artificial limb,
the toe portion has a second fixing portion joined to the first fixing portion, and an insertion hole inserted into an end portion of the heel portion on the prosthetic toe side,
the first anchor portion and the second anchor portion are configured to be coupled to each other so that a positional relationship of the first anchor portion and the second anchor portion in a longitudinal direction of the foot portion can be adjusted.
2. A foot section according to claim 1, characterised in that at least one of said heel portion and said toe portion has a symmetrical shape corresponding to the common shape of a left and right shoe of the prosthetic user.
3. A foot section of a prosthetic foot according to claim 1 or 2, wherein the first fixing section has a coupling member in which a plurality of hole portions are arranged in a longitudinal direction of the foot section, and the second fixing section has a mounting portion mounted in at least one of the hole portions of the plurality of hole portions of the first fixing section.
4. A foot section as claimed in any of claims 1 to 3, characterised in that the toe section is resilient and also has one or more adjustment apertures different to the insertion apertures.
5. A foot section for a prosthetic of claim 4, wherein at least a portion of one or more of said adjustment apertures extends in a direction parallel to said insertion aperture.
6. A foot portion according to any of claims 1 to 5, characterised in that the first fixing portion is mounted on the connecting portion and is made of a metal of lower strength than the connecting portion.
7. A foot as claimed in any of claims 1 to 6, wherein the heel portion has:
a first plate portion provided with the connecting portion and the first fixing portion on a first surface;
a second plate portion provided on a second surface side of the first plate portion opposite to the first surface.
8. A foot portion of a prosthetic of claim 7, wherein an end of the first plate portion is inserted into the insertion hole up to a position determined based on a positional relationship between the first fixing portion and the second fixing portion.
9. A foot as claimed in claim 7 or 8, wherein the first plate portion is formed of a material having resilience, and the second plate portion has a curved surface and is formed such that the end on the heel side is spaced further from the first plate portion than the end on the toe side.
10. A prosthesis, comprising:
a socket mounted on a portion of a user's body; and a foot of the prosthesis according to any one of claims 1 to 8 connected with a socket of the prosthesis or a knee connected to the socket.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019183503A JP2021058318A (en) | 2019-10-04 | 2019-10-04 | Foot part of artificial leg, and artificial leg |
| JP2019-183503 | 2019-10-04 | ||
| PCT/JP2020/037447 WO2021066104A1 (en) | 2019-10-04 | 2020-10-01 | Foot portion of prosthetic leg and prosthetic leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114466633A true CN114466633A (en) | 2022-05-10 |
Family
ID=75337047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080070012.5A Pending CN114466633A (en) | 2019-10-04 | 2020-10-01 | Foot of artificial limb and artificial limb |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2021058318A (en) |
| CN (1) | CN114466633A (en) |
| WO (1) | WO2021066104A1 (en) |
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| JP2003518961A (en) * | 1999-07-09 | 2003-06-17 | グラムテク インノボシューン アクチボラゲット | Foot prosthesis |
| KR20070032026A (en) * | 2004-06-29 | 2007-03-20 | 오토 복 헬스케어 이페 게엠베하 운트 콤파니 카게 | Artificial foot |
| CN1937974A (en) * | 2004-04-01 | 2007-03-28 | 巴里·W·汤森 | Prosthetic foot with tunable performance |
| JP2013512043A (en) * | 2009-11-25 | 2013-04-11 | オットー・ボック・ヘルスケア・ゲーエムベーハー | Artificial leg |
| US20150289996A1 (en) * | 2014-04-14 | 2015-10-15 | Otto Bock Healthcare Lp | Adjustable length prosthetic foot |
| CN106456341A (en) * | 2014-05-07 | 2017-02-22 | 奥托·博克保健有限公司 | Prosthetic foot |
| CN106659572A (en) * | 2014-07-28 | 2017-05-10 | 奥托·博克保健有限公司 | Prosthetic foot, system of a prosthetic foot and a shoe, and method for adapting the heel height of a prosthetic foot |
| WO2019117389A1 (en) * | 2017-12-12 | 2019-06-20 | 주식회사 박의지 | Prosthetic foot |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19521147C1 (en) * | 1995-06-09 | 1996-12-05 | Bock Orthopaed Ind | Articulated prosthetic foot part |
-
2019
- 2019-10-04 JP JP2019183503A patent/JP2021058318A/en active Pending
-
2020
- 2020-10-01 CN CN202080070012.5A patent/CN114466633A/en active Pending
- 2020-10-01 WO PCT/JP2020/037447 patent/WO2021066104A1/en active Application Filing
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|---|---|---|---|---|
| JPH11514548A (en) * | 1995-11-07 | 1999-12-14 | グラムテク インノボシューン アクチボラゲット | Adjustable adapter for lower limb prosthesis |
| JP2003518961A (en) * | 1999-07-09 | 2003-06-17 | グラムテク インノボシューン アクチボラゲット | Foot prosthesis |
| CN1937974A (en) * | 2004-04-01 | 2007-03-28 | 巴里·W·汤森 | Prosthetic foot with tunable performance |
| KR20070032026A (en) * | 2004-06-29 | 2007-03-20 | 오토 복 헬스케어 이페 게엠베하 운트 콤파니 카게 | Artificial foot |
| JP2013512043A (en) * | 2009-11-25 | 2013-04-11 | オットー・ボック・ヘルスケア・ゲーエムベーハー | Artificial leg |
| US20150289996A1 (en) * | 2014-04-14 | 2015-10-15 | Otto Bock Healthcare Lp | Adjustable length prosthetic foot |
| CN106456341A (en) * | 2014-05-07 | 2017-02-22 | 奥托·博克保健有限公司 | Prosthetic foot |
| CN106659572A (en) * | 2014-07-28 | 2017-05-10 | 奥托·博克保健有限公司 | Prosthetic foot, system of a prosthetic foot and a shoe, and method for adapting the heel height of a prosthetic foot |
| WO2019117389A1 (en) * | 2017-12-12 | 2019-06-20 | 주식회사 박의지 | Prosthetic foot |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2021058318A (en) | 2021-04-15 |
| WO2021066104A1 (en) | 2021-04-08 |
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