CN219645978U - Foot prosthesis device - Google Patents
Foot prosthesis device Download PDFInfo
- Publication number
- CN219645978U CN219645978U CN202321299284.XU CN202321299284U CN219645978U CN 219645978 U CN219645978 U CN 219645978U CN 202321299284 U CN202321299284 U CN 202321299284U CN 219645978 U CN219645978 U CN 219645978U
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- Prior art keywords
- hole
- elastic
- shaft
- ankle structure
- wear
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- 210000002683 foot Anatomy 0.000 claims abstract description 47
- 210000003423 ankle Anatomy 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005484 gravity Effects 0.000 abstract description 3
- 230000003139 buffering effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000003141 lower extremity Anatomy 0.000 description 2
- 206010016173 Fall Diseases 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 210000003414 extremity Anatomy 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model relates to the technical field of medical equipment, and particularly discloses an artificial foot device which comprises a sole structure, an elastic bushing, a wear-resistant bushing, a lower ankle structure arranged above the sole structure and an upper ankle structure arranged above the lower ankle structure. According to the technical scheme, the left-right micro-angle rotation is realized through the inner shafts of the upper ankle structure and the lower ankle structure, so that a person with a body disability can finely adjust the gravity center of the body to maintain the balance of the body when stepping on the ground, the elastic lining provides restoring elastic force, the upper ankle structure and the lower ankle structure can return to the relative positions before being stressed at the moment that the person with the body disability lifts the artificial foot device, the person with the body disability can walk gradually and stably in an ergonomic posture, the effect of improving the use safety is achieved, the deformation of the outer side part of the elastic lining is larger than that of the inner side part of the elastic lining, and the elastic utilization rate of the elastic lining is improved.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to a prosthetic foot device.
Background
The artificial foot device is a leg structure imitating a human body, is suitable for people with legs being amputated, is usually arranged below a lower leg part and serves as a foot for people with physical disabilities to step on the ground for use when standing or walking, however, when the physically disabled people walk by using the existing artificial foot device, the existing artificial foot device can realize pressure buffering support in the vertical direction, and has not been designed for adaptive rotation of angles in the horizontal direction, so that the existing artificial foot device often lacks flexibility and operability, and cannot naturally balance the body like a common person, so that the risk of falling down when the physically disabled people walk exists, and structural improvement is needed.
Disclosure of Invention
The utility model aims to provide a prosthetic foot device which solves the problems in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an artificial foot device comprises a sole structure, an elastic bushing, a wear-resistant bushing, a lower ankle structure arranged above the sole structure, and an upper ankle structure arranged above the lower ankle structure;
the sole structure comprises two foot plate pieces and two buffer cushions;
the outer side surface of the elastic bushing is provided with a plurality of embedded grooves in a surrounding manner, and the inner side surface of the elastic bushing is provided with a plurality of positioning holes in a surrounding manner;
the outer side of the wear-resistant lining is provided with a through hole which penetrates through the front side and the rear side of the wear-resistant lining;
the lower ankle structure comprises a supporting seat fixed on the surface of the sole structure, an inner shaft is fixedly arranged at the top of the supporting seat, the inner shaft comprises a connecting part and a shaft body part fixed below the connecting part and fixedly connected with the supporting seat, a limiting hole consistent with the shape of the through hole is formed in the outer side of the connecting part, the limiting hole penetrates through the front side and the rear side of the connecting part, and positioning convex ribs matched with the shape of the positioning hole in number are arranged on the outer side of the shaft body part in a surrounding mode; the positioning hole of the elastic bushing is connected with the positioning convex rib in an embedded way, and the wear-resistant bushing is sleeved outside the connecting part;
the upper ankle structure comprises an outer cover sleeved outside an inner shaft, a fixing seat is arranged at the top of the outer cover, the outer cover comprises a surrounding wall arranged outside the shaft body, a convex part matched with the shape quantity of the embedded groove is arranged on the inner wall of the surrounding wall in a surrounding mode, the convex part is embedded with the embedded groove and connected with the embedded groove, a connecting hole is formed in the outer wall of the outer cover, a fastener is embedded in the connecting hole, the fastener comprises a bolt head and a shaft rod, the shaft rod sequentially penetrates through the connecting hole, the through hole and the limiting hole, and the shaft rod penetrates through one end of the rear side of the limiting hole to be provided with a sealing cover.
As a preferred embodiment of the technical scheme of the utility model, two foot plate pieces are stacked up and down, one buffer pad is arranged at the seam of the two foot plate pieces, and the other buffer pad is arranged at the seam between the upper foot plate piece and the supporting seat.
As a preferred implementation mode of the technical scheme of the utility model, a lock hole is formed in the position, right below the connecting hole, of the outer cover, a clamping screw is arranged in the lock hole and comprises a screw head and a stud, a plurality of grooves are formed in the outer side of the screw head in a surrounding mode, and the screw head of the clamping screw is clamped with any groove of the screw head.
As a preferred implementation mode of the technical scheme of the utility model, the through hole of the wear-resistant bushing extends along the horizontal rotation direction, the transverse width of the through hole is 4 mm-6 mm larger than the diameter of the shaft rod, and the vertical width of the through hole is 1 mm-2 mm larger than the diameter of the shaft rod.
As a preferred implementation mode of the technical scheme of the utility model, the aperture of the positioning hole in the horizontal rotation direction is smaller than that of the embedded groove in the horizontal rotation direction by 5 mm-8 mm.
Compared with the prior art, the utility model has the following beneficial effects:
1. according to the technical scheme, the upper ankle structure and the lower ankle structure are connected with the tail end of the lower limb through the fixing base, and the inner shafts of the upper ankle structure and the lower ankle structure can rotate at a left angle and a right angle, so that a person with a physical disability can finely adjust the gravity center of the body to maintain the balance of the body when stepping on the ground, the elastic lining provides restoring elastic force, the upper ankle structure and the lower ankle structure can return to the relative positions before being stressed at the moment that the person with the physical disability lifts the artificial foot device, and the person with the physical disability can walk gradually and stably in an ergonomic posture, so that the effect of improving the use safety is achieved.
2. According to the technical scheme, the positioning holes and the positioning ribs of the elastic bushing are positioned and assembled, the embedded grooves of the elastic bushing and the convex parts of the surrounding walls are positioned and assembled, so that the elastic bushing can be ensured to be firmly arranged on the shaft body, the elastic bushing cannot slide or rotate relative to the lower ankle structure, the aperture of the positioning holes in the horizontal rotation direction is smaller than that of the embedded grooves in the horizontal rotation direction, the deformation of the outer side part of the elastic bushing is larger than that of the inner side part of the elastic bushing, and the elastic utilization rate of the elastic bushing is improved.
Drawings
Other features, objects and advantages of the present utility model will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of a prosthetic foot device according to the present utility model;
FIG. 2 is a perspective view of the interior of the outer cover of the present utility model;
FIG. 3 is an exploded view of a prosthetic foot device according to the present utility model;
FIG. 4 is a cross-sectional view of the present utility model taken along line IV-IV in FIG. 2;
FIG. 5 is a perspective view of the interior of the outer cover when the upper ankle structure of the utility model is rotated side-to-side;
FIG. 6 is a cross-sectional view of the present utility model taken along line VI-VI in FIG. 2;
fig. 7 is a cross-sectional view of the present utility model taken along line VII-VII in fig. 5.
In the figure:
1. a sole structure; 11. a foot plate; 12. a cushion pad;
2. a lower ankle structure; 21. a support base; 22. an inner shaft; 221. a shaft body; 222. a joint portion; 223. a limiting hole; 23. positioning the convex ribs;
3. an upper ankle structure; 31. a fixing seat; 32. an outer cover; 321. a surrounding wall; 322. a convex portion; 323. a connection hole; 324. a lock hole; 33. a fastener; 331. a bolt head; 332. a shaft lever; 333. a groove; 34. clamping and fixing a screw; 341. a screw head; 342. a stud;
4. an elastic bushing; 41. a fitting groove; 42. positioning holes;
5. wear-resistant bushings; 51. and a through hole.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Embodiment 1, as shown in fig. 1-7, the present utility model provides a technical solution: an artificial foot device comprises a sole structure 1, an elastic bushing 4, a wear-resistant bushing 5, a lower ankle structure 2 arranged above the sole structure 1, and an upper ankle structure 3 arranged above the lower ankle structure 2;
the sole structure 1 comprises two foot plate pieces 11 and two cushion pads 12;
the outer side surface of the elastic bushing 4 is surrounded by a plurality of embedded grooves 41, and the inner side surface of the elastic bushing 4 is surrounded by a plurality of positioning holes 42;
the outside of the wear-resistant lining 5 is provided with a through hole 51, and the through hole 51 penetrates through the front side and the rear side of the wear-resistant lining 5;
the lower ankle structure 2 comprises a supporting seat 21 fixed on the surface of the sole structure 1, an inner shaft 22 is fixedly arranged at the top of the supporting seat 21, the inner shaft 22 comprises a connecting part 222 and a shaft body part 221 fixed below the connecting part 222 and fixedly connected with the supporting seat 21, a limiting hole 223 consistent with the shape of the through hole 51 is formed in the outer side of the connecting part 222, the limiting hole 223 penetrates through the front side and the rear side of the connecting part 222, and positioning convex ribs 23 matched with the shape of the positioning holes 42 are arranged on the outer side of the shaft body part 221 in a surrounding mode; the positioning hole 42 of the elastic bushing 4 is connected with the positioning convex rib 23 in an embedded way, and the wear-resistant bushing 5 is sleeved outside the connecting part 222;
the upper ankle structure 3 comprises an outer cover 32 sleeved outside the inner shaft 22, a fixing seat 31 is arranged at the top of the outer cover 32, the outer cover 32 comprises a surrounding wall 321 surrounding the outer portion of the shaft body 221, a convex portion 322 matched with the shape quantity of the embedded groove 41 is arranged on the inner wall of the surrounding wall 321 in a surrounding mode, the convex portion 322 is embedded and connected with the embedded groove 41, a connecting hole 323 is formed in the outer wall of the outer cover 32, a fastening piece 33 is embedded in the connecting hole 323, the fastening piece 33 comprises a bolt head 331 and a shaft lever 332, the shaft lever 332 sequentially penetrates through the connecting hole 323, the through hole 51 and the limiting hole 223, and one end, penetrating through the rear side of the limiting hole 223, of the shaft lever 332 is provided with a sealing cover.
In a specific embodiment of the present utility model, the top surface of the fixing seat 31 is provided with a mating concave hole so as to be connected with the tail end of the lower limb, as shown in fig. 1, the two foot plate members 11 of the sole structure 1 are folded, the lower foot plate member 11 is attached to the upper foot plate member 11, so that the two foot plate members 11 are combined to form an inverted herringbone shape, the two foot plate members 11 are connected through a bolt fastener, one cushion pad 12 is arranged at a seam of the two foot plate members 11, the other cushion pad 12 is arranged at a seam between the upper foot plate member 11 and the supporting seat 21, when a person with an obstacle steps on vertically, the herringbone shape of the two foot plate members 11 is matched with the two cushion pads 12 to perform vertical buffering, the supporting seat 21 is arranged on the surface of the upper foot plate member 11 through the bolt fastener, the elastic bushing 4 is sleeved outside the shaft body 221, the positioning hole 42 of the elastic bushing 4 is assembled with the positioning convex rib 23 in a positioning way, then the wear-resistant bushing 5 is sleeved outside the connecting part 222, the wear-resistant bushing 5 is favorable for separating the connecting part 222 and the outer cover 32, so that the loss caused by friction of the inner shaft 22 is avoided, the through hole 51 of the wear-resistant bushing 5 is aligned with the limit hole 223, the outer cover 32 is sleeved outside the inner shaft 22, in the process, the convex part 322 of the surrounding wall 321 is assembled with the embedded groove 41 of the elastic bushing 4 in a positioning way, the connecting hole 323 is aligned with the through hole 51, the shaft lever 332 sequentially penetrates through the connecting hole 323, the through hole 51 and the limit hole 223, and the shaft lever 332 penetrates through one end of the rear side of the limit hole 223 to be fixedly provided with a sealing cover, so that the shaft lever 332 is prevented from falling off, at the moment, the upper ankle structure 3 and the lower ankle structure 2 are assembled, and the shaft lever 332 can rotate at a tiny angle in the horizontal direction on the limit hole 223, the gravity center of the body can be finely adjusted to maintain the balance of the body when a person with a body disability walks on the ground, the deformation of the elastic bushing 4 provides a restoring elastic force, the opening caliber of the positioning hole 42 in the horizontal rotation direction is smaller than that of the embedded groove 41 in the horizontal rotation direction, the deformation of the outer side part of the elastic bushing 4 is larger than that of the inner side part of the elastic bushing 4, the elastic utilization rate of the elastic bushing 4 is improved, the upper ankle structure 3 and the lower ankle structure 2 lift the artificial foot device at the moment of the person with the body disability, the elastic bushing 4 elastically rebounds to enable the lower ankle structure 2 and the sole structure 1 to return to the relative position before being stressed, and the person with the body disability walks gradually and stably in a posture conforming to the ergonomics is facilitated, so that the effect of improving the use safety is achieved.
In the preferred technical solution, two foot plate members 11 are stacked up and down, one cushion pad 12 is arranged at the seam of the two foot plate members 11, the other cushion pad 12 is arranged at the seam between the upper foot plate member 11 and the supporting seat 21, and when a person with a body disability steps on the foot plate member vertically, the two cushion pads 12 are matched with the herringbone of the two foot plate members 11 to perform vertical buffering.
In the preferred technical scheme, the outer cover 32 is located under the engagement hole 323 and is provided with a lock hole 324, a clamping screw 34 is arranged in the lock hole 324, the clamping screw 34 comprises a screw head 341 and a stud 342, a plurality of grooves 333 are formed around the outer side of the screw head 331, the screw head 341 of the clamping screw 34 is clamped with any one groove 333 of the screw head 331, so that the fastening piece 33 cannot rotate by taking the shaft lever 332 as the axis, and the effect of positioning the fastening piece 33 on the outer cover 32 is achieved.
In the preferred technical solution, the through hole 51 of the wear-resistant bushing 5 extends along the horizontal rotation direction, the transverse width of the through hole 51 is 4mm larger than the diameter of the shaft lever 332, so that the inner shafts 22 of the upper ankle structure 3 and the lower ankle structure 2 can rotate at a slight angle left and right, the body weight center of the body can be finely adjusted by the body-barrier person when the body-barrier person steps on the ground to maintain the balance of the body, the vertical width of the through hole 51 is 1mm larger than the diameter of the shaft lever 332, and the shaft lever 332 is ensured to smoothly pass through the through hole 51.
In the preferred technical solution, the aperture of the positioning hole 42 in the horizontal rotation direction is smaller than the aperture of the fitting groove 41 in the horizontal rotation direction by 5mm, which is beneficial to making the deformation of the outer portion of the elastic bushing 4 larger than the deformation of the inner portion of the elastic bushing 4 and improving the elastic utilization rate of the elastic bushing 4.
Working principle: through fixing base 31 and the terminal of linking the limbs down are connected, during initial state, this prosthetic foot device does not receive pressure, elastic liner 4 can not take place elastic deformation, when the person of physically handicapped vertically steps on, two bumper pads 12 of chevron-shaped cooperation of two sole pieces 11 can carry out vertical buffering, in-process two sole pieces 11 are laminated each other and bumper pad 12 is pressed deformation, when meetting the body and swing naturally or the rugged at ordinary times on ground, because axostylus axostyle 332 can carry out the micro-angle rotation of horizontal direction on spacing hole 223, can let the person of physically handicapped's focus in order to maintain the balance of body when walking on ground, in-process enclosing cover 32 can rotate for interior axle 22, as shown in fig. 7, convex part 322 can carry out extrusion deformation to elastic liner 4 in order to maintain the balance of body at this moment, provide the resilience by elastic liner 4's deformation, upper ankle structure 3 and lower ankle structure 2 lift up this prosthetic foot device's in the moment, elastic liner 4 elasticity resilience makes enclosing cover 32 rotate to initial state position, finally lower ankle structure 2 and sole structure 1 relatively position, make the person of physically handicapped person's the stability of being in order to walk in order to make the body to accord with the steady posture of human body's body.
Claims (5)
1. A prosthetic foot device, characterized in that: comprises a sole structure (1), an elastic lining (4), a wear-resistant lining (5), a lower ankle structure (2) arranged above the sole structure (1) and an upper ankle structure (3) arranged above the lower ankle structure (2);
the sole structure (1) comprises two foot plate pieces (11) and two buffer cushions (12);
the outer side surface of the elastic bushing (4) is circumferentially provided with a plurality of embedded grooves (41), and the inner side surface of the elastic bushing (4) is circumferentially provided with a plurality of positioning holes (42);
the outside of the wear-resistant lining (5) is provided with a through hole (51), and the through hole (51) penetrates through the front side and the rear side of the wear-resistant lining (5);
the lower ankle structure (2) comprises a supporting seat (21) fixed on the surface of the sole structure (1), an inner shaft (22) is fixedly arranged at the top of the supporting seat (21), the inner shaft (22) comprises a connecting portion (222) and a shaft body portion (221) fixed below the connecting portion (222) and fixedly connected with the supporting seat (21), a limiting hole (223) consistent with the shape of the through hole (51) is formed in the outer side of the connecting portion (222), the limiting hole (223) penetrates through the front side and the rear side of the connecting portion (222), and positioning ribs (23) matched with the shape number of the positioning holes (42) are arranged on the outer side of the shaft body portion (221) in a surrounding mode; the positioning holes (42) of the elastic bushings (4) are connected with the positioning convex ribs (23) in an embedded mode, and the wear-resistant bushings (5) are sleeved outside the connecting parts (222);
the upper ankle structure (3) comprises an outer cover (32) sleeved outside the inner shaft (22), a fixing seat (31) is arranged at the top of the outer cover (32), the outer cover (32) comprises a surrounding wall (321) arranged outside the shaft body (221), convex parts (322) matched with the shape quantity of the embedded grooves (41) are arranged on the inner wall of the surrounding wall (321) in a surrounding mode, the convex parts (322) are embedded and connected with the embedded grooves (41), connecting holes (323) are formed in the outer wall of the outer cover (32), fasteners (33) are embedded in the connecting holes (323), the fasteners (33) comprise bolt heads (331) and shaft rods (332), the shaft rods (332) sequentially penetrate through the connecting holes (323), through holes (51) and limiting holes (223), and one ends of the shaft rods (332) penetrating through the rear sides of the limiting holes (223) are provided with sealing covers.
2. A prosthetic foot device according to claim 1, wherein: the two foot plate pieces (11) are stacked up and down, one buffer pad (12) is arranged at the joint of the two foot plate pieces (11), and the other buffer pad (12) is arranged at the joint between the upper foot plate piece (11) and the supporting seat (21).
3. A prosthetic foot device according to claim 1, wherein: the outer cover (32) is located the department of linking hole (323) and has seted up lockhole (324), inside clamping screw (34) that are provided with of lockhole (324), clamping screw (34) are including spiral shell head (341) and double-screw bolt (342), around having seted up recess (333) of a plurality of in the outside of bolt head (331), spiral shell head (341) of clamping screw (34) and arbitrary one of bolt head (331) recess (333) looks joint.
4. A prosthetic foot device according to claim 1, wherein: the through hole (51) of the wear-resistant bushing (5) extends along the horizontal rotation direction, the transverse width of the through hole (51) is 4 mm-6 mm larger than the diameter of the shaft lever (332), and the vertical width of the through hole (51) is 1 mm-2 mm larger than the diameter of the shaft lever (332).
5. A prosthetic foot device according to claim 1, wherein: the aperture of the positioning hole (42) in the horizontal rotation direction is smaller than that of the embedded groove (41) in the horizontal rotation direction by 5 mm-8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321299284.XU CN219645978U (en) | 2023-05-26 | 2023-05-26 | Foot prosthesis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321299284.XU CN219645978U (en) | 2023-05-26 | 2023-05-26 | Foot prosthesis device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219645978U true CN219645978U (en) | 2023-09-08 |
Family
ID=87880295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321299284.XU Active CN219645978U (en) | 2023-05-26 | 2023-05-26 | Foot prosthesis device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219645978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117814969A (en) * | 2024-03-04 | 2024-04-05 | 吉林大学 | Lower limb bionic artificial limb with pneumatic balance and gravity center actively adjusted |
-
2023
- 2023-05-26 CN CN202321299284.XU patent/CN219645978U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117814969A (en) * | 2024-03-04 | 2024-04-05 | 吉林大学 | Lower limb bionic artificial limb with pneumatic balance and gravity center actively adjusted |
| CN117814969B (en) * | 2024-03-04 | 2024-06-07 | 吉林大学 | Lower limb bionic artificial limb with pneumatic balance and gravity center actively adjusted |
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