Multifunctional foot prosthesis

Abstract

The utility model discloses a multifunctional foot artificial limb which comprises an artificial limb body, a first connecting piece is installed on the artificial limb body, a second connecting piece is movably installed in the first connecting piece, a connecting sleeve is installed at the top end of the second connecting piece, a spring is connected to the outer portion of the first connecting piece in a sleeved mode, and a push ring is connected to the outer portion of the spring in a sleeved mode. The push ring is connected to the first connecting piece in a sliding mode, a plurality of first connecting grooves and second connecting grooves are formed in the first connecting piece and the second connecting piece respectively, a steel ball is arranged between every two adjacent first connecting grooves and second connecting grooves in a matched mode, and main components of the artificial limb are located inside, so that the possibility that the artificial limb makes contact with external objects is avoided; and the service life and the safety performance of parts are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of prosthetics technology, and in particular to a multifunctional foot prosthesis. Background Technology

[0002] As is well known, a prosthesis is an artificial prosthesis specially designed, manufactured, and fitted using engineering techniques to compensate for amputees or those with incomplete limb loss. Also known as a "prosthetic limb," its main function is to replace some of the functions of the lost limb, enabling amputees to regain a certain degree of self-care and work ability. Among these, foot prostheses have emerged as user needs have increased, resulting in a multifunctional foot prosthesis.

[0003] The utility model with publication number CN217409079U relates to the field of prosthetics technology and proposes a multifunctional foot prosthesis. It facilitates the disassembly and installation of the prosthesis body, makes it easy to fix the device to the body, and allows for easy adjustment according to specific dimensions. It is less prone to falling off and offers high flexibility. The prosthesis includes a prosthesis body and a fixing plate. A locking post is fixedly connected to the bottom of the fixing plate. A locking groove matching the locking post is opened at the top of the prosthesis body. Storage slots are opened at both ends of the locking post. Limiting covers are slidably connected within the storage slots. Limiting springs are connected between the limiting covers and the storage slots. Two limiting grooves are opened on the prosthesis body, communicating with the locking grooves. A pushing component is provided on the prosthesis body. A fixed half-sleeve is fixedly connected to the top of the prosthesis body, and a sliding half-sleeve is slidably connected to the top of the prosthesis body. Two elastic bands are fixedly connected between the fixed half-sleeve and the sliding half-sleeve. A driving component is provided between the fixed half-sleeve and the sliding half-sleeve.

[0004] In the foot prosthesis disclosed in the above-mentioned utility model, most of the components are located outside the prosthesis body and the fixed half-set. They are prone to wear and tear under long-term use, reducing the service life of the prosthesis. At the same time, the external gear and rack are easy to get caught on the fabric of the user's body, posing a safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional foot prosthesis to solve the problems of low service life and safety hazards mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional foot prosthesis, comprising a prosthesis body, a first connector mounted on the prosthesis body, a second connector movably mounted inside the first connector, a connecting sleeve mounted on the top of the second connector, a spring sleeved on the outside of the first connector, a push ring sleeved on the outside of the spring, the push ring slidably connected to the first connector, and a plurality of first connecting grooves and second connecting grooves respectively provided on the first connector and the second connector, with a steel ball adapted between each pair of adjacent first connecting grooves and second connecting grooves.

[0007] Preferably, a third connecting groove is provided on the inner wall surface of the push ring, and the spring slides and adapts to the third connecting groove.

[0008] Preferably, a limiting ring is installed on the first connector, the size of which is adapted to the third connecting groove, and the spring is positioned above the limiting ring.

[0009] Preferably, a connecting plate is installed inside the first connector, and the connecting plate is in contact with the bottom end of the second connector.

[0010] Preferably, a bidirectional lead screw is rotatably installed at the lower end of the connecting sleeve. The upper thread of the bidirectional lead screw is connected to two opposing movable plates, and an elastic sleeve is provided between the two movable plates. The bottom of the elastic sleeve is slidably connected to the bidirectional lead screw.

[0011] Preferably, a swivel is installed at one end of the bidirectional lead screw, and a rotating groove is provided on the connecting sleeve, so that the swivel can rotate and fit into the rotating groove.

[0012] Preferably, the elastic sleeve has a through hole, the diameter of which is larger than the diameter of the bidirectional lead screw.

[0013] The beneficial effects of this utility model are:

[0014] In this invention, the push ring is pressed downwards to the bottom of the first connecting groove. Then, the second connecting piece at the bottom of the connecting sleeve is aligned with the first connecting piece, and the second connecting piece is controlled to move downwards. When the second connecting piece moves to the appropriate position, the push ring is released, and the spring pushes the top of the push ring to the first connecting groove, squeezing several steel balls into the second connecting piece. This makes the steel balls securely locked between the first and second connecting pieces, thereby achieving the purpose of connecting the prosthesis body to the connecting sleeve. This facilitates the installation and replacement of prostheses of different specifications. The main components of the prosthesis are all located inside, avoiding the possibility of contact with external objects, effectively improving the service life and safety performance of the components. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a multifunctional foot prosthesis proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating ring and rotating groove of a multifunctional foot prosthesis proposed in this utility model;

[0017] Figure 3 This is a side view sectional structural diagram of a multifunctional foot prosthesis proposed in this utility model;

[0018] Figure 4 This is an enlarged structural diagram of section A of a multifunctional foot prosthesis proposed in this utility model.

[0019] In the diagram: 1. Prosthetic body; 2. First connector; 3. Second connector; 4. Connecting sleeve; 5. Spring; 6. Push ring; 7. First connecting groove; 8. Second connecting groove; 9. Steel ball; 10. Third connecting groove; 11. Limiting ring; 12. Connecting plate; 13. Two-way lead screw; 14. Moving plate; 15. Elastic sleeve; 16. Rotary ring; 17. Rotating groove; 18. Through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A multifunctional foot prosthesis includes a prosthesis body 1, a first connector 2 installed on the prosthesis body 1, a second connector 3 movably installed inside the first connector 2, a connecting sleeve 4 installed at the top of the second connector 3, a spring 5 sleeved on the outside of the first connector 2, a push ring 6 sleeved on the outside of the spring 5, the push ring 6 slidably connected to the first connector 2, and a plurality of first connecting grooves 7 and second connecting grooves 8 respectively opened on the first connector 2 and the second connector 3, with a steel ball 9 adapted between each pair of adjacent first connecting grooves 7 and second connecting grooves 8.

[0022] When using this prosthesis, first press the push ring 6 downwards to the bottom of the first connecting groove 7. Then, align the second connecting piece 3 at the bottom of the connecting sleeve 4 with the first connecting piece 2 and control the second connecting piece 3 to move downwards. When the second connecting piece 3 moves to the appropriate position, release the push ring 6. The spring 5 pushes the top of the push ring 6 to the first connecting groove 7 and squeezes several steel balls 9 into the second connecting piece 3, so that the steel balls 9 are firmly locked between the first connecting piece 2 and the second connecting piece 3, thereby achieving the purpose of connecting the prosthesis body 1 to the connecting sleeve 4. This facilitates the installation and replacement of prostheses 1 of different specifications. The main components of this prosthesis are all inside, avoiding the possibility of contact with external objects, effectively improving the service life and safety performance of the components.

[0023] Specifically, in this embodiment, a third connecting groove 10 is provided on the inner wall surface of the push ring 6, and the spring 5 is slidably adapted in the third connecting groove 10, so that the spring 5 can be slidably installed inside the push ring 6 through the third connecting groove 10. When the push ring 6 is pressed, the spring 5 can be synchronously compressed, thereby exerting the reset function of the spring 5.

[0024] Specifically, in this embodiment, a limiting ring 11 is installed on the first connecting member 2. The size of the limiting ring 11 is adapted to the third connecting groove 10, and the spring 5 is located above the limiting ring 11. When the push ring 6 drives the spring 5 to move downward, the bottom end of the spring 5 will be restricted on the limiting ring 11, thereby providing support for the spring 5 to facilitate its reset.

[0025] Specifically, in this embodiment, a connecting plate 12 is installed inside the first connector 2. The connecting plate 12 is in contact with the bottom end of the second connector 3, so that when the second connector 3 is inserted into the first connector 2, it can contact the connecting plate 12. When the two are in contact, it can be known that the second connector 3 is in the appropriate position, and the push ring 6 no longer needs to be pressed.

[0026] Specifically, in this embodiment, a bidirectional lead screw 13 is rotatably installed at the lower end of the connecting sleeve 4. The upper thread of the bidirectional lead screw 13 is connected to two opposing movable plates 14. An elastic sleeve 15 is disposed between the two movable plates 14. The bottom of the elastic sleeve 15 is slidably connected to the bidirectional lead screw 13. When the human body is put into the connecting sleeve 4, the lower limbs of the human body can be placed into the elastic sleeve 15. Then, the bidirectional lead screw 13 is rotated, thereby driving the two movable plates 14 to move closer to each other, thereby squeezing the elastic sleeve 15, so that the elastic sleeve 15 can be stably fitted with the lower limbs of the human body, thereby enabling the connecting sleeve 4 to be stably connected to the human body.

[0027] Specifically, in this embodiment, a swivel 16 is installed at one end of the bidirectional lead screw 13, and a rotating groove 17 is provided on the connecting sleeve 4. The swivel 16 is rotatably fitted into the rotating groove 17, allowing the user to rotate the bidirectional lead screw 13 by rotating the swivel 16, thereby securely connecting the lower limbs to the connecting sleeve 4; at the same time, the setting of the rotating groove 17 makes the swivel 16...

[0028] 16 is always within the range of the connecting sleeve 4, thereby preventing external objects from getting caught on the rotating ring 16 and effectively improving the safety of the prosthesis during use.

[0029] Specifically, in this embodiment, the elastic sleeve 15 is provided with a through hole 18. The diameter of the through hole 18 is larger than the diameter of the bidirectional lead screw 13, so that the elastic sleeve 15 can be connected to the bidirectional lead screw 13 through the through hole 18, thereby preventing the elastic sleeve 15 from shifting when the bidirectional lead screw 13 rotates, which would affect the connection effect between the elastic sleeve 15 and the human body.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A multifunctional foot prosthesis comprising a prosthesis body (1), characterized in that: The first connecting piece (2) is installed on the artificial limb body (1), the second connecting piece (3) is movably installed in the first connecting piece (2), the connecting sleeve (4) is installed at the top of the second connecting piece (3), the spring (5) is sleeved outside the first connecting piece (2), the push ring (6) is sleeved outside the spring (5), the push ring (6) is slidably connected on the first connecting piece (2), a plurality of first connecting grooves (7) and second connecting grooves (8) are respectively formed in the first connecting piece (2) and the second connecting piece (3), and a steel ball (9) is matched between every two adjacent first connecting grooves (7) and second connecting grooves (8).

2. A multi-functional foot prosthesis according to claim 1, characterized in that: A third connecting groove (10) is formed in the inner wall surface of the push ring (6), and the spring (5) is slidably matched in the third connecting groove (10).

3. A multi-functional foot prosthesis as claimed in claim 1, wherein: A limiting ring (11) is installed on the first connecting piece (2), the size of the limiting ring (11) is matched with the third connecting groove (10), and the spring (5) is above the limiting ring (11).

4. A multi-functional foot prosthesis according to claim 1, characterized in that: A connecting plate (12) is installed inside the first connecting piece (2), and the connecting plate (12) is in contact with the bottom end of the second connecting piece (3).

5. A multi-functional foot prosthesis as claimed in claim 1, wherein: A bidirectional screw rod (13) is rotatably installed at the lower end position of the connecting sleeve (4), two opposite moving plates (14) are threadedly connected to the upper end of the bidirectional screw rod (13), an elastic sleeve (15) is arranged between the two moving plates (14), and the bottom of the elastic sleeve (15) is slidably connected to the bidirectional screw rod (13).

6. A multi-functional foot prosthesis according to claim 5, characterized in that: A rotating ring (16) is installed at one end of the bidirectional screw rod (13), a rotating groove (17) is formed in the connecting sleeve (4), and the rotating ring (16) is rotatably matched in the rotating groove (17).

7. A multi-functional foot prosthesis according to claim 5, characterized in that: A through hole (18) is formed in the elastic sleeve (15), and the diameter of the through hole (18) is greater than the diameter of the bidirectional screw rod (13).

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