Intelligent signal sensing type forearm prosthesis

Abstract

The utility model relates to the technical field of forearm prostheses, and particularly discloses an intelligent signal sensing type forearm prosthesis which comprises a wearable receiving cavity, a connecting block is fixedly connected in the wearable receiving cavity, a rotating shaft is rotatably connected in the connecting block, an eccentric block is sleeved on the outer surface of the rotating shaft, and a handle is fixedly connected on the outer surface of the eccentric block. When the artificial limb is worn, a user takes the wearing receiving cavity and installs the wearing receiving cavity at the position of a broken limb, the handle is pressed anticlockwise through fingers, the handle is pressed to rotate, the handle drives the eccentric block to eccentrically rotate with the rotating shaft as the circle center in the rotating process, and then the user wears the artificial limb. The eccentric block extrudes the extrusion block to slide in the connecting block, the extrusion block slides to abut against the skin of the user, the artificial limb is temporarily clamped on the skin, the hand can be freed to wear the strap, the user can operate preliminary fixation of the artificial limb with one hand, convenience and rapidness are achieved, and the purpose of convenient wearing is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of forearm prostheses, in particular to an intelligent signal sensing type forearm prosthesis. Background Art

[0002] A prosthesis is an artificial device used to replace a missing limb, usually made of materials such as metal, plastic or carbon fiber. They are designed to provide the function and appearance of the missing limb to help individuals return to a normal life. Prosthetics are becoming increasingly advanced in design and manufacturing, and can be customized to an individual's needs and activity level. Some are even equipped with electronic devices, such as smart prostheses, to enable more natural movement and control.

[0003] For example, a Chinese patent discloses: an upper limb prosthetic arm tube, patent number: CN215080313U, which connects the upper arm and the fixed plate through a rotating block. The rotating block is used to drive the strap at the top of the fixed plate to rotate, so that the strap can fit the human body better and enhance the positioning performance. The extension layer is fixed to the front and rear ends of the upper arm. The extension layer can provide protection for the contact part of the upper arm with the human body.

[0004] However, in the process of implementing the above technical solution, it was found that there are at least the following technical problems: when the above-mentioned prosthesis is worn, it is fixed to the body by straps, but when wearing the above-mentioned device, the user needs to take the prosthesis while tying the straps to the body, and it lacks a supporting and clamping function, making it difficult for the user to wear it alone. Utility Model Content

[0005] (I) Technical problems solved: In view of the deficiencies in the prior art, the present invention provides an intelligent signal sensing forearm prosthesis, which solves the technical problem that the prosthesis is fixed to the body by straps when being worn, but the device requires the user to take the prosthesis while tying the straps to the body when being worn, and lacks a supporting and clamping function, making it difficult for the user to wear the device alone.

[0006] (II) Technical solution: To achieve the above objectives, the present utility model is implemented through the following technical solutions:

[0007] An intelligent signal sensing forearm prosthesis comprises a wearable receiving cavity, a connecting block is fixedly connected inside the wearable receiving cavity, a rotating shaft is rotatably connected inside the connecting block, an eccentric block is sleeved on the outer surface of the rotating shaft, a handle is fixedly connected to the outer surface of the eccentric block, an extrusion block is slidably connected inside the connecting block, the extrusion block and the eccentric block are on the same horizontal line, a wearing mechanism is fixedly connected to the outer surface of the wearable receiving cavity, the wearing mechanism comprises a shoulder strap, and the shoulder strap is fixedly connected to the outer surface of the wearable receiving cavity.

[0008] Preferably, the interior of the wearing receiving cavity is rotatably connected to a forearm prosthesis body, and the interior of the forearm prosthesis body is slidably connected to a support block.

[0009] Preferably, a sliding block is fixedly connected to the outer surface of the support block, and a sliding groove is provided inside the forearm prosthesis body.

[0010] Preferably, a sEMG sensor is fixedly connected inside the support block.

[0011] Preferably, an inertial sensor is fixedly connected inside the support block, and a pressure sensor is fixedly connected inside the support block.

[0012] Preferably, a positioning hole is provided inside the forearm prosthesis body.

[0013] (III) Beneficial effects: 1. When wearing the prosthesis, the user takes the wearing receiving cavity and installs the wearing receiving cavity to the broken limb, and presses the handle counterclockwise with the fingers. The handle is pressed to rotate, and the eccentric block is driven to rotate eccentrically with the rotating shaft as the center during the rotation of the handle. The extrusion block slides in the connecting block through the eccentric block. The extrusion block slides against the user's skin, so that the prosthesis is temporarily clamped on the skin, and the hands can be freed to wear the strap. After wearing the strap, press the handle clockwise to release the contact clamping of the extrusion block. The user can operate the initial fixation of the prosthesis with one hand, which is convenient and quick, and achieves the purpose of easy wearing. The user can complete the wearing of the prosthesis by themselves, which improves the independence of wearing.

[0014] 2. Before using the forearm prosthesis, the user can choose to add different numbers of support blocks according to the position of his or her own amputated limb, slide the support blocks into the slide grooves through the sliders, and insert the fasteners into the positioning holes to fix the support blocks. By flexibly adding different numbers of support blocks, the installation length can be adjusted to adapt to users with different degrees of amputation and improve the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0016] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 2 It is an exploded diagram of the connection block connection of the utility model;

[0018] Figure 3 This is an exploded diagram of the eccentric block connection of the utility model;

[0019] Figure 4 This is an exploded view of the support block connection of the utility model.

[0020] Legend: 11. Wearing cavity; 12. Connecting block; 13. Rotating shaft; 14. Eccentric block; 15. Handle; 16. Extrusion block; 17. Strap; 18. Forearm prosthesis body; 19. Support block; 21. Slider; 22. Slide groove; 23. sEMG sensor; 24. Inertial sensor; 25. Pressure sensor; 26. Positioning hole. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides an intelligent signal sensing forearm prosthesis, which effectively solves the problem of fixing the prosthesis by tying it to the body through a strap when the prosthesis is worn. However, the above device requires the user to take the prosthesis while tying the strap to the body when wearing it, and lacks a supporting and clamping function, making it difficult for the user to wear it alone. When wearing the prosthesis, the user takes the wearing receiving cavity and installs the wearing receiving cavity to the broken limb, and presses the handle counterclockwise with the finger, so that the handle is pressed and rotates. During the rotation of the handle, the eccentric block is driven to rotate eccentrically with the rotating shaft as the center of the circle, and the extrusion block is squeezed by the eccentric block to slide in the connecting block. The extrusion block slides against the user's skin, so that the prosthesis is temporarily clamped on the skin, and the hand can be freed to wear the strap. After wearing the strap, the handle is pressed clockwise to release the contact clamping of the extrusion block. The user can operate the initial fixation of the prosthesis with one hand, which is convenient and quick, thereby achieving the purpose of easy wearing. The user can complete the wearing of the prosthesis by themselves, which improves the independence of wearing.

[0022] Example: Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in the embodiment of the present application is to effectively solve the technical problem that the above-mentioned prosthesis is fixed to the body by tying it with a strap when being worn, but the above-mentioned device requires the user to take the prosthesis while tying the strap to the body when being worn, lacks a supporting and clamping function, and is difficult for the user to wear it alone. The overall idea is as follows: it includes a wearing receiving cavity 11, a connecting block 12 is fixedly connected to the inside of the wearing receiving cavity 11, a rotating shaft 13 is rotatably connected to the inside of the connecting block 12, an eccentric block 14 is sleeved on the outer surface of the rotating shaft 13, a handle 15 is fixedly connected to the outer surface of the eccentric block 14, an extrusion block 16 is slidably connected to the inside of the connecting block 12, the extrusion block 16 and the eccentric block 14 are on the same horizontal line, a wearing mechanism is fixedly connected to the outer surface of the wearing receiving cavity 11, and the wearing mechanism includes a strap 17, and the strap 17 is fixedly connected to the outer surface of the wearing receiving cavity 11 On the other hand, users with arm disabilities can restore basic functions and promote rehabilitation and exercise by wearing prostheses to simulate the movements of palms and fingers. When wearing the prosthesis, the user takes the wearing receiving cavity 11 and installs the wearing receiving cavity 11 to the broken limb, and presses the handle 15 counterclockwise with the fingers. The handle 15 is pressed to rotate, and the eccentric block 14 is driven to rotate eccentrically with the rotating shaft 13 as the center during the rotation of the handle 15. The squeezing block 16 is squeezed by the eccentric block 14 to slide in the connecting block 12. The squeezing block 16 slides against the user's skin, so that the prosthesis is temporarily clamped on the skin, and the hand can be freed to wear the strap 17. After wearing the strap 17, the handle 15 is pressed clockwise to release the squeezing block 16. The user can operate the initial fixation of the prosthesis with one hand, which is convenient and quick, and achieves the purpose of easy wearing. The user can complete the wearing of the prosthesis by himself, which improves the independence of wearing.

[0023] The forearm prosthesis body 18 is rotatably connected inside the wear receiving cavity 11, the forearm prosthesis body 18 is slidably connected with a support block 19, the outer surface of the support block 19 is fixedly connected with a slider 21, a slide groove 22 is provided inside the forearm prosthesis body 18, the slider 21 is slidably connected inside the slide groove 22, a sEMG sensor 23 is fixedly connected inside the support block 19, an inertial sensor 24 is fixedly connected inside the support block 19, and a pressure sensor 25 is fixedly connected inside the support block 19. After the wear receiving cavity 11 is worn, the sEMG sensor installed inside the forearm prosthesis body 18 is The sensor 23 detects the electrical signals generated by the muscle activity on the wearer's residual limb. These signals are used to interpret the wearer's intentions, such as wanting to clench, relax or move the prosthesis. Motion detection and posture control through the inertial sensor 24 can detect the movement and position changes of the prosthesis in space, provide real-time feedback, and ensure that the prosthesis can maintain balance and stability when moving. The pressure sensor 25 allows the prosthesis to adjust its grip to avoid excessive force that damages objects or causes discomfort to the wearer. The prosthesis can achieve natural, precise and reliable control, providing users with a better user experience and quality of life.

[0024] A positioning hole 26 is provided inside the forearm prosthesis body 18, and the positioning hole 26 and the support block 19 are on the same vertical line. Before using the forearm prosthesis body 18, the user can choose to add different numbers of support blocks 19 according to the position of his or her own amputated limb, slide the support block 19 into the slide groove 22 through the slider 21, and extend the fastener into the positioning hole 26 to fix the support block 19. By flexibly adding different numbers of support blocks 19, the installation length can be adjusted to adapt to users with different degrees of amputation and improve the applicability of the device.

[0025] In view of the problems existing in the prior art, the utility model provides an intelligent signal sensing forearm prosthesis. When wearing the prosthesis, the user takes the wearing receiving cavity 11 and installs the wearing receiving cavity 11 to the broken limb, and presses the handle 15 counterclockwise with the finger. The handle 15 is pressed to rotate, and the eccentric block 14 is driven to rotate eccentrically with the rotating shaft 13 as the center during the rotation of the handle 15. The squeezing block 16 is squeezed by the eccentric block 14 to slide in the connecting block 12. The squeezing block 16 slides against the user's skin, so that the prosthesis is temporarily clamped on the skin, and the hand can be freed to wear the strap 17. After wearing the strap 17, the handle 15 is pressed clockwise to release the squeezing block 16. The user can operate the initial fixation of the prosthesis with one hand, which is convenient and quick, and the purpose of easy wearing is achieved. The user can complete the wearing of the prosthesis by himself, which improves the independence of wearing.

[0026] Working principle: In the first step, users with arm disabilities can restore basic functions and promote rehabilitation and exercise by wearing prostheses to simulate the movements of palms and fingers. When wearing the prosthesis, the user takes the wearing receiving cavity 11 and installs the wearing receiving cavity 11 to the broken limb, and presses the handle 15 counterclockwise with the fingers. The handle 15 is pressed to rotate, and the eccentric block 14 is driven to rotate eccentrically with the rotating shaft 13 as the center during the rotation of the handle 15. The squeezing block 16 is squeezed by the eccentric block 14 to slide in the connecting block 12. The squeezing block 16 slides against the user's skin, so that the prosthesis is temporarily clamped on the skin, and the hand can be freed to wear the strap 17. After wearing the strap 17, press the handle 15 clockwise to loosen the squeezing block 16. The user can operate the initial fixation of the prosthesis with one hand, which is convenient and quick, and achieves the purpose of easy wearing. The user can complete the wearing of the prosthesis by themselves, which improves the independence of wearing.

[0027] In the second step, after the receiving cavity 11 is worn, the sEMG sensor 23 installed inside the forearm prosthesis body 18 detects the electrical signals generated by the muscle activity on the wearer's residual limb. These signals are used to interpret the wearer's intentions, such as wanting to clench, relax or move the prosthesis. Motion detection and posture control through the inertial sensor 24 can detect the movement and position changes of the prosthesis in space, provide real-time feedback, and ensure that the prosthesis can maintain balance and stability when moving. The pressure sensor 25 allows the prosthesis to adjust its grip to avoid excessive force to damage items or cause discomfort to the wearer. The prosthesis can achieve natural, precise and reliable control, providing users with a better user experience and quality of life. Before using the forearm prosthesis body 18, the user can choose to add different numbers of support blocks 19 according to the position of his or her own broken limb, slide the support block 19 into the slide groove 22 through the slider 21, and extend the fastener into the positioning hole 26 to fix the support block 19. By flexibly adding different numbers of support blocks 19, the installation length can be adjusted to adapt to users with different degrees of broken limbs, thereby improving the applicability of the device.

[0028] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. An intelligent signal sensing forearm prosthesis, comprising a wearable receiving cavity (11), characterized in that: A connecting block (12) is fixedly connected inside the wearable receiving cavity (11), a rotating shaft (13) is rotatably connected inside the connecting block (12), an eccentric block (14) is sleeved on the outer surface of the rotating shaft (13), a handle (15) is fixedly connected to the outer surface of the eccentric block (14), and an extrusion block (16) is slidably connected inside the connecting block (12); Wherein, a wearing mechanism is fixedly connected to the outer surface of the wearing receiving cavity (11); The wearing mechanism comprises a shoulder strap (17), and the shoulder strap (17) is fixedly connected to the outer surface of the wearing receiving cavity (11).

2. The intelligent signal sensing forearm prosthesis according to claim 1, characterized in that: The forearm prosthesis body (18) is rotatably connected inside the wearing receiving cavity (11); Wherein, a support block (19) is slidably connected inside the forearm prosthesis body (18).

3. The intelligent signal sensing forearm prosthesis according to claim 2, characterized in that: A sliding block (21) is fixedly connected to the outer surface of the support block (19); Wherein, a slide groove (22) is provided inside the forearm prosthesis body (18).

4. The intelligent signal sensing forearm prosthesis according to claim 3, characterized in that: The slider (21) is slidably connected inside the slide groove (22); Wherein, a sEMG sensor (23) is fixedly connected inside the support block (19).

5. The intelligent signal sensing forearm prosthesis according to claim 4, characterized in that: An inertial sensor (24) is fixedly connected inside the support block (19); Wherein, a pressure sensor (25) is fixedly connected inside the support block (19).

6. The intelligent signal sensing forearm prosthesis according to claim 5, characterized in that: A positioning hole (26) is provided inside the forearm prosthesis body (18); Wherein, the positioning hole (26) and the support block (19) are located on the same vertical line.

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