CN115969589A - Foot prosthesis - Google Patents

Abstract

The invention discloses a foot prosthesis, which includes a foot plate and a joint, and also includes a support plate, an upper body and a hydraulic cylinder; the lower end of the support plate is detachably connected to the rear end of the foot plate, and the upper end is connected to the upper true body The lower end of the body is detachably connected; the rear end of the upper body is detachably connected to the upper end of the hydraulic cylinder, and the upper end is detachably connected to the lower end of the joint; the lower end of the hydraulic cylinder is detachably connected to the rear end of the support plate. The advantages of the present invention are: due to the adoption of the hydraulic method, the foot prosthesis can well simulate the movement of human fascia, the height of the heel can be adjusted according to the demand, and the height of different shoes can be adjusted accordingly, so that walking is more convenient and the walking process is more convenient. Stable and continuous.

Description

a prosthetic foot

technical field

The invention relates to the technical field of artificial limbs, in particular to a foot artificial limb.

Background technique

In the past few decades, artificial limb technology has developed rapidly. At present, in order to ensure the normal daily life of disabled people who have lost their feet, artificial limbs are usually installed on the lost limbs. Its function is to replace part of the functions of the lost feet. Disabled people regain a certain ability to take care of themselves and work. For users, prosthetics become another new everyday. The user accepts the fact that the limb is disabled and undergoes rehabilitation training after installing the prosthesis so that he can start to live independently afterwards.

However, with the increasing aesthetic level of social development, users still encounter many embarrassments socially, such as wearing high-heeled shoes on some occasions, because the foot prosthesis cannot adjust the height of the heel, and the height of the heel cannot be adjusted to wear high-heeled shoes. People with disabilities will have great resistance to participate in social activities. In the prior art, the foot structure is connected by a rotating shaft, which cannot simulate the structure of the human foot well, and the heel height cannot be adjusted to adapt to different usage scenarios of the disabled.

Contents of the invention

The technical problem to be solved by the present invention is to provide a foot prosthesis with adjustable heel height.

In order to solve the problems of the technologies described above, the technical solution of the present invention is:

A foot prosthesis, including a foot plate and a joint, and also includes a support plate, an upper body, and a hydraulic cylinder; the lower end of the support plate is detachably connected to the rear end of the foot plate, and the upper end is detachably connected to the lower end of the upper body connection; the rear end of the upper body is detachably connected to the upper end of the hydraulic cylinder, and the upper end is detachably connected to the lower end of the joint; the lower end of the hydraulic cylinder is detachably connected to the rear end of the support plate.

Further, the hydraulic cylinder includes a cylinder body; the front end of the cylinder body is detachably connected to a separation chamber, the lower end is inserted and connected to a piston rod, and a through hole VIII is opened in the middle; the piston rod is coaxially connected to a connector ; The through hole VIII is connected with an adjustment shaft.

Further, a plug is detachably connected to the lower end of the cylinder body; a retaining ring is detachably installed between the plug and the cylinder body; adjustment stops are detachably connected to both ends of the adjustment shaft.

Further, the upper end of the cylinder body is provided with a through hole VII; the rear end of the upper body is provided with two through holes V; the through hole VII is movably connected with the through hole V through the core axis two; the core Both ends of the shaft two are coaxially provided with flanging bushings; said through hole VII is provided with a through hole IX in a direction perpendicular to the axis; said through hole IX is equipped with a top wire.

Further, a through hole I is opened on the top of the support plate; a through hole VI is opened on the lower end of the upper body; the through hole I and the through hole VI are movably connected through a nuclear axis; the nuclear axis one Copper sleeves are provided at both ends in the coaxial direction; through hole III is opened in the vertical direction of the axis of the through hole I; through hole IV is opened in the vertical direction of the axis of the through hole II; installed in the through hole III and through hole IV top wire.

Further, two through-holes II are provided at the rear end of the support plate; the through-hole II is movably connected to the connecting head through a secondary shaft; The ring shaft sleeve is installed with plugs in the coaxial direction at both ends; the lower end of the support plate is provided with a cavity and a connection hole II.

Further, the foot plate includes a foot plate part I and a foot plate part II; the foot plate part I is detachably connected to the foot plate part II; a connection hole I is opened on the foot plate part I; the connection hole I is connected to the foot plate part II The connection hole II is threaded through the hexagon socket head screw.

Further, the shape of the front end of the upper body is arc-shaped, and a connection hole III is opened at the upper end; the connection hole III is threadedly connected with the joint.

With the above technical solution, the foot prosthesis can simulate the movement of human fascia well due to the hydraulic method, and the height of the heel can be adjusted according to the needs, and the height of different shoes can be adjusted accordingly, making walking more convenient and more stable during the walking process and continuous.

Description of drawings

Fig. 1 is the schematic diagram of foot prosthesis structure;

Figure 2 is a schematic diagram of foot prosthesis explosion;

Fig. 3 is the schematic diagram of foot prosthesis foot plate;

Fig. 4 is a schematic diagram of a foot prosthesis support plate;

Fig. 5 is a schematic diagram of the real body on the foot prosthesis;

Fig. 6 is a schematic diagram of explosion of the foot prosthesis hydraulic cylinder;

Fig. 7 is a schematic diagram of the cylinder body of the foot prosthesis hydraulic cylinder;

Fig. 8 is a sectional view of the hydraulic cylinder of the foot prosthesis.

In the figure, 1-foot plate, 2-support plate, 3-upper body, 4-hydraulic cylinder, 5-joint, 6-hexagon socket head screw, 7-copper sleeve, 8-core shaft 1, 9-pair Shaft, 10-circular bushing, 11-blocking, 12-top wire, 13-nuclear shaft two, 14-flange bushing, 101-foot board part Ⅰ, 102-foot board part Ⅱ, 103-connection hole Ⅰ, 201-through hole 1, 202-through hole 2, 203-cavity, 204-connection hole Ⅱ, 205-through hole Ⅲ, 206-through hole Ⅳ, 301-arc type, 302-connection hole Ⅲ, 303-through Hole Ⅴ, 304-through hole Ⅵ, 401-cylinder body, 402-separation chamber, 403-adjustment shaft, 404-adjustment limit, 405-retaining ring, 406-plug, 407-piston rod, 408-connector, 4011-Through hole VII, 4012-Through hole IX, 4013-Through hole VIII, 4014-Oil chamber I, 4015-Oil chamber II, 4016-Oil chamber III, 4017-Oil chamber IV.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

In describing the invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, use a specific The azimuth structure and operation, therefore can not be construed as the limitation to the invention of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and should not be construed as indicating or implying relative importance.

Referring to Figures 1-8, a foot prosthesis includes a foot plate 1 and a joint 5, and also includes a support plate 2, an upper body 3 and a hydraulic cylinder 4; the lower end of the support plate 2 is detachably connected to the rear end of the foot plate 1 , the upper end is detachably connected to the lower end of the upper body 3; the rear end of the upper body 3 is detachably connected to the upper end of the hydraulic cylinder 4, and the upper end is detachably connected to the lower end of the joint 5; the lower end of the hydraulic cylinder 4 is detachably connected to the rear end of the support plate 2 .

Specifically, the hydraulic cylinder 4 includes a cylinder body 401; the front end of the cylinder body 401 is detachably connected to a separation chamber 402, the lower end is inserted into and connected to a piston rod 407, and a through hole VIII 4013 is opened in the middle; the piston rod 407 is coaxial and detachably connected to a connector 408 ; the through hole VIII 4013 is connected with the adjustment shaft 403 . By moving the adjustment shaft 403, the height of the piston rod 407 is changed, thereby adjusting the height of the heel of the foot prosthesis.

Specifically, a plug 406 is detachably connected to the lower end of the cylinder body 401 ; a stop ring 405 is detachably installed between the plug 406 and the cylinder body 401 ; adjustment limiters 404 are detachably connected to both ends of the adjustment shaft 403 . The plug 406 fixes the piston rod 407 in the hydraulic cylinder body 401 . The retaining ring 405 is used to seal the retaining ring 405 to prevent liquid from seeping out of the hydraulic cylinder.

Specifically, the upper end of the cylinder body 401 is provided with a through hole VII4011; the rear end of the upper body 3 is provided with two through holes V303; the through hole VII4011 and the through hole V303 are flexibly connected through the core axis 2 13; the two ends of the core axis 13 are coaxial The direction is provided with a flanging bushing 14; the through hole VII 4011 is provided with a through hole IX 4012 in the vertical axis direction; the top wire 12 is installed in the through hole IX 4012. The second core shaft 13 is used to connect the hydraulic cylinder 4 and the upper body 3, and the wear of the hydraulic cylinder 4 and the upper body 3 is reduced by setting the flanging bushing 14, so as to improve the service life of the components. Jackscrew 12 is installed and is used for fixing nuclear shaft two 13, makes nuclear shaft two 13 and hydraulic cylinder 4 rotate simultaneously.

Specifically, the upper end of the support plate 2 is provided with a through hole I201; the lower end of the upper body 3 is provided with a through hole VI304; the through hole I201 and the through hole VI304 are flexibly connected through the core shaft-8; the two ends of the core shaft-8 are coaxially arranged There is a copper sleeve 7; the through hole III 205 is opened in the vertical direction of the axis of the through hole I 201; the through hole IV 206 is opened in the vertical direction of the axis of the through hole II 202; the top wire 12 is installed in the through hole III 205 and the through hole IV 206. The core shaft-8 is used to connect the support plate 2 and the upper body 3, and the copper sleeve 7 is provided to reduce the friction force between the support plate 2 and the upper body 3 to improve the service life. Top wire 12 plays a fixing role.

Specifically, two through holes II 202 are provided at the rear end of the support plate 2; the through holes II 202 and the connector 408 are movably connected through the auxiliary shaft 9; the contact part of the auxiliary shaft 9 and the connector 408 is coaxially provided with a ring sleeve 10, The two ends are respectively installed with plugs 11 in the coaxial direction; the lower end of the support plate 2 is provided with a cavity 203 and a connection hole II 204 . The ring bushing 10 is used to prevent wear of the support plate 2 and the connecting head 408 .

Specifically, the footboard 1 includes the footboard part I101 and the footboard part II102; the footboard part I101 and the footboard part II102 are detachably connected; the footboard part I101 is provided with a connection hole I103; the connection hole II204 and the connection hole I103 are threaded through the six socket head cap screws connect. The first foot part 101 is fixedly connected to the second foot part 102 through bolts and gaskets, and forms a certain arc to make the foot elastic to support the weight of the human body.

Specifically, the shape of the front end of the upper body 3 is arc-shaped 301 , and the upper end is provided with a connecting hole III 302 ; the connecting hole III 302 is threadedly connected with the joint 5 . The arc-shaped 301 can simulate the structure of the human foot very well. The connector is a standard prosthetic connector. The prosthetic foot is connected to other prosthetics through the connector, which is convenient for replacement.

Working principle of the present invention:

When it is necessary to increase the height of the heel, the adjustment limit 404 is moved, and the adjustment shaft 403 moves from the first end to the second end, and the oil chamber in the hydraulic cylinder 4 is in a connected state at this time. The piston rod 407 moves upwards, and the fluid in the first oil chamber 4014 enters the second oil chamber 1015, the third oil chamber 4016, and the fourth oil chamber 4017 through the communication hole. As the fluid in the oil chamber 1 4014 decreases, the heel height gradually decreases. When the required heel height is reached, the adjustment limit 404 is moved to drive the adjustment shaft 403 to move from the second end to the first end. The oil chambers are not connected to each other, and the height that needs to be adjusted remains unchanged at the heel.

When the height of the heel needs to be lowered, the adjustment limit 404 is moved, and the adjustment shaft 403 moves from the first end to the second end, and the oil chamber in the hydraulic cylinder 4 is in a connected state at this time. Piston rod 407 moves downward, and fluid in oil chamber two 1015, oil chamber three 4016, and oil chamber four 4017 enters oil chamber one 4014 through the communication hole. As the fluid in the oil chamber 1 4014 increases, the heel height gradually increases. When the required heel height is reached, the adjustment limit 404 is moved to drive the adjustment shaft 403 to move from the second end to the first end. At this time, the hydraulic cylinder 4 The inner oil chambers are not connected to each other, and the height that needs to be adjusted remains unchanged at the heel.

By moving the fluid in the hydraulic cylinder, the piston rod is at different heights, so that the height of the heel of the foot prosthesis can be set. By adjusting the height of the heel, the foot prosthesis can be more suitable for walking and can cope with different conditions. Footwear needs to make the user walk more stable and continuous.

The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, without departing from the principle and spirit of the present invention, various changes, modifications, substitutions and modifications to these embodiments still fall within the protection scope of the present invention.

Claims (8)

1. A foot prosthesis comprising a foot plate (1) and a joint (5), characterized in that: the device also comprises a supporting plate (2), an upper vacuum body (3) and a hydraulic cylinder (4); the lower end of the supporting plate (2) is detachably connected with the rear end of the foot plate (1), and the upper end of the supporting plate is detachably connected with the lower end of the upper vacuum body (3); the rear end of the upper vacuum body (3) is detachably connected with the upper end of the hydraulic cylinder (4), and the upper end of the upper vacuum body is detachably connected with the lower end of the joint (5); the lower end of the hydraulic cylinder (4) is detachably connected with the rear end of the supporting plate (2).

2. A foot prosthesis according to claim 1, characterised in that: the hydraulic cylinder (4) comprises a cylinder body (401); the front end of the cylinder body (401) is detachably connected with a separation bin (402), the lower end of the cylinder body is inserted and connected with a piston rod (407), and the middle of the cylinder body is provided with a through hole VIII (4013); the piston rod (407) is coaxially and detachably connected with a connector (408); and the through hole VIII (4013) is connected with an adjusting shaft (403) in a penetrating way.

3. A foot prosthesis according to claim 2, characterised in that: the lower end of the cylinder body (401) is detachably connected with a plug (406); a retainer ring (405) is detachably mounted between the plug (406) and the cylinder body (401); two ends of the adjusting shaft (403) are detachably connected with adjusting limits (404).

4. A foot prosthesis according to claim 1, characterised in that: the upper end of the cylinder body (401) is provided with a through hole VII (4011); the rear end of the upper vacuum body (3) is provided with two through holes V (303); the through hole VII (4011) is movably connected with the through hole V (303) through a second nuclear shaft (13); two ends of the second nuclear shaft (13) are provided with flanging shaft sleeves (14) in the coaxial direction; a through hole IX (4012) is formed in the through hole VII (4011) in the direction vertical to the axis; and a jackscrew (12) is arranged in the through hole IX (4012).

5. A foot prosthesis according to claim 1, wherein: the upper end of the supporting plate (2) is provided with a through hole I (201); the lower end of the upper vacuum body (3) is provided with a through hole VI (304); the through hole I (201) is movably connected with the through hole VI (304) through a nuclear shaft I (8); copper sleeves (7) are arranged at two ends of the first nuclear shaft (8) in the coaxial direction; a through hole III (205) is formed in the direction vertical to the axis of the through hole I (201); a through hole IV (206) is formed in the axis vertical direction of the through hole II (202); and jackscrews (12) are arranged in the through holes III (205) and IV (206).

6. A foot prosthesis according to claim 1, characterised in that: the rear end of the supporting plate (2) is provided with two through holes II (202); the through hole II (202) is movably connected with the connecting head (408) through an auxiliary shaft (9); the contact part of the auxiliary shaft (9) and the connector (408) is coaxially provided with a circular shaft sleeve (10), and plugs (11) are respectively arranged at the two ends in the coaxial direction; and the lower end of the supporting plate (2) is provided with a cavity (203) and a connecting hole II (204).

7. A foot prosthesis according to claim 1, characterised in that: the foot plate (1) comprises a foot plate component I (101) and a foot plate component II (102); the foot plate component I (101) is detachably connected with the foot plate component II (102); a connecting hole I (103) is formed in the foot plate component I (101); the connecting hole II (204) is in threaded connection with the connecting hole I (103) through an inner hexagonal round head screw (6).

8. A foot prosthesis according to claim 1, characterised in that: the front end of the upper vacuum body (3) is arc-shaped (301), and the upper end of the upper vacuum body is provided with a connecting hole III (302); and the connecting hole III (302) is in threaded connection with the joint (5).

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