Self-adaptive artificial arm

Abstract

The invention provides a self-adaptive artificial arm, and relates to the technical field of artificial limbs, the self-adaptive artificial arm comprises a palm part and an arm part, the palm part and the arm part are connected with each other, a cavity is formed in the arm part, the cavity is used for connecting an arm, the self-adaptive artificial arm further comprises a diameter adjusting device, and the diameter adjusting device is used for adjusting the diameter of the palm part. The diameter adjusting device is arranged in the cavity of the arm part, and the diameter adjusting device is driven to fix the arm. During use, the second expansion part and the skin limiting groove are arranged in the arm part, the expansion degree of the second expansion part and the skin limiting groove is controlled through the micro air pump, and when different users use the device, the device is inserted into the arm part by different depths according to the amputation position, so that the amputation effect is improved. Then a micro air pump is started, so that a second expansion part and a skin limiting groove are expanded and attached to the arm of the human body, the palm part and the arm part are connected with the arm of the human body, the adaptability is improved, and most patients do not need to customize any more.

Description

Technical Field

[0001] The present invention relates to the technical field of prostheses, and in particular to an adaptive arm prosthesis. Background Art

[0002] Prosthesis is an artificial prosthesis specially designed and manufactured by engineering technology to compensate for the limbs of amputees or incomplete limbs. Its main function is to replace some functions of the lost limbs and enable amputees to restore a certain degree of self-care and work ability.

[0003] Prostheses usually need to be customized because each person's body size and amputation location are different. Customized prostheses can better adapt to individual physical characteristics and functional needs. Professional technicians will measure and shape the residual limb and make the socket. This process ensures that the prosthesis fits the residual limb well.

[0004] Therefore, most prostheses need to be customized, which means patients have to wait for a long time and pay high customization costs.

[0005] For example, the Chinese patent publication number: CN 109330750 A discloses a prosthetic tool device and a prosthesis. This invention patent includes a tool fixing mechanism and a tool piece; the tool fixing mechanism includes a fixing ball, a first fixing piece and a second fixing piece, the first fixing piece and the second fixing piece can cooperate to form a receiving cavity, the second fixing piece is provided with a through hole, the through hole can be connected to the receiving cavity, the fixing ball is arranged in the receiving cavity, and the part of the fixing ball facing the through hole protrudes outside the through hole; the first fixing piece and the second fixing piece are detachably connected. The tool piece can be adjusted at different angles and in different directions, which is convenient for disabled people with arm disabilities to use. However, the volume of the prosthetic receiving cavity in the above-mentioned prior art is fixed, and the volume cannot be changed according to different receptors, and customization is still required.

[0006] To this end, the present application proposes an adaptive arm prosthesis as a universal product, which is used to adapt to the arm diameter and amputation position of most patients, reducing patients' waiting time and customization costs. Summary of the invention

[0007] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an adaptive arm prosthesis to solve the problem of high customization cost mentioned in the prior art.

[0008] To achieve the above-mentioned and other related purposes, the present invention provides an adaptive arm prosthesis, comprising a palm portion and an arm portion, wherein the palm portion and the arm portion are connected to each other, and a cavity is provided inside the arm portion, and the cavity is used to connect the arm;

[0009] The adaptive arm prosthesis also includes:

[0010] A diameter adjustment device, the diameter adjustment device is arranged inside the cavity of the arm, and the diameter adjustment device can be driven to fix the arm;

[0011] The diameter adjustment device includes an expansion part and a micro air pump, and the micro air pump can control the expansion part to expand and constrain on the arm;

[0012] The expansion part includes a first expansion part and a second expansion part, wherein the first expansion part and the second expansion part are both fixed to the inner wall of the arm part;

[0013] The first expansion part and the second expansion part are connected to each other, and the micro air pump can inflate the first expansion part and the second expansion part. The output end of the micro air pump is provided with a solenoid valve to control the inflation and deflation of the first expansion part and the second expansion part.

[0014] Preferably, the inner walls of the first expansion portion and the second expansion portion are both provided with air holes;

[0015] A skin limiting groove is provided between the first expansion part and the second expansion part, and an anti-rotation groove is provided on the inner wall of the second expansion part.

[0016] Preferably, the number of the first expansion parts is two, the two first expansion parts are symmetrically distributed inside the arm part, and a gap is left between the two first expansion parts.

[0017] Preferably, the first expansion portion and the second expansion portion each include an inner covering layer, an outer covering layer and a flexible clamping member;

[0018] The flexible clamping member is arranged between the inner covering layer and the outer covering layer, and a soft filler is arranged between the inner covering layer and the outer covering layer to limit the position of the flexible clamping member;

[0019] The ventilation holes are arranged on the inner covering layer.

[0020] Preferably, the flexible clamping member comprises an airflow conduit and an expansion bag, wherein the expansion bag is an elliptical bag that can expand and contract, and the expansion bags are equidistantly distributed on the airflow conduit.

[0021] Preferably, a body sensation enhancement device is also installed inside the arm portion, and the body sensation enhancement device can blow air and provide heat to the inside of the arm portion.

[0022] Preferably, the body sensation enhancement device comprises an isolation component, a heating component, an air supply component and an electrical appliance support portion;

[0023] The isolation component and the electrical appliance support part are both fixed inside the arm part, and a gap is left between the isolation component and the electrical appliance support part;

[0024] The heating component and the air supply component are located between the isolation component and the electrical appliance support portion, and the air supply component is arranged between the heating component and the electrical appliance support portion.

[0025] Preferably, the isolation component comprises an isolation plate, and the isolation plate is provided with ventilation holes.

[0026] Preferably, the electrical appliance support portion comprises a support plate, the support plate is provided with ventilation holes, a power shunt is provided on a side of the support plate away from the isolation component, and the power shunt is electrically connected to the heating component and the air supply component respectively.

[0027] Preferably, the connection between the arm portion and the palm portion is provided with a ventilation slot and a button indication area, respectively, and switches for controlling the heating component, the air supply component and the micro air pump are installed below the button indication area;

[0028] The switches for controlling the heating component and the air supply component are electrically connected to the power shunt.

[0029] As described above, the adaptive arm prosthesis of the present invention has the following beneficial effects:

[0030] 1. The present invention arranges a second expansion part and a skin limiting groove inside the arm, and controls the expansion degree of the second expansion part and the skin limiting groove by a micro air pump. When different users use it, they insert the second expansion part and the skin limiting groove to different depths in the arm according to the position of the amputation, and then start the micro air pump to expand the second expansion part and the skin limiting groove to fit on the human arm, connecting the palm and the arm part to the human arm, thereby improving adaptability, eliminating the need for customization for most patients, and reducing time and money costs.

[0031] 2. The present invention provides two first expansion parts, and a gap between the first expansion parts, and at the same time provides an air vent between the first expansion part and the second expansion part and an anti-rotation groove inside the second expansion part. When the first expansion part and the second expansion part clamp the skin, the skin that is not under pressure will be embedded in the gap between the two first expansion parts, in the anti-rotation groove and in the air vent, thereby preventing the prosthesis from rotating and slipping.

[0032] 3. The present invention arranges a heating component and an air supply component inside the arm and isolates the arm from the human body through an isolation component. During use, the air supply component can increase the air circulation inside the arm in summer to avoid the arm from being stuffy. In winter, the heating component heats the air and is used in conjunction with the air supply component to keep the arm warm, thereby achieving the effect of improving comfort.

[0033] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 Shown is a schematic structural diagram of the present invention.

[0035] Figure 2 Shown is a bottom view of the structure of the present invention.

[0036] Figure 3 Shown is a right side view of the structure of the present invention.

[0037] Figure 4 Shown is a cross-sectional view of the structure of the present invention.

[0038] Figure 5 Shown is a schematic diagram of the internal structure layout of the present invention.

[0039] Figure 6 It is a schematic structural diagram of the second expansion portion of the present invention.

[0040] Figure 7 It is a schematic diagram of the expansion structure of the expansion part of the present invention.

[0041] Figure 8 It is a schematic structural diagram of the flexible clamping member of the present invention.

[0042] Fig. 9 Shown is a schematic structural diagram of the body sensation enhancement device of the present invention.

[0043] Fig.10 Shown is a schematic structural diagram of the electrical appliance support portion of the present invention.

[0044] Component number description

[0045] 1. Palm;

[0046] 2. Arm; 201. Ventilation slot; 202. Button indication area;

[0047] 3. Diameter adjustment device; 301. First expansion part; 302. Second expansion part; 303. Skin limiting groove; 304. Anti-rotation groove; 305. Air vent; 306. Inner covering layer; 307. Outer covering layer; 308. Flexible clamping member; 3081. Air flow conduit; 3082. Expansion bag;

[0048] 4. Body sensation enhancement device; 401. Isolation component; 4011. Isolation plate; 4012. Ventilation hole; 402. Heating component; 403. Air supply component; 404. Electrical appliance support; 4041. Support plate; 4042. Ventilation hole; 4043. Power shunt. DETAILED DESCRIPTION

[0049] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0050] like Figure 1-Figure 4 As shown, the present invention provides an adaptive arm prosthesis, comprising a palm portion 1 and an arm portion 2, which are connected to each other to form the main body of the prosthesis. A cavity is provided inside the arm portion 2, and the cavity is used to connect the arm.

[0051] The adaptive arm prosthesis further comprises: a diameter adjusting device 3. The diameter adjusting device 3 is arranged inside the cavity of the arm part 2, and the diameter adjusting device 3 can be driven to fix the arm.

[0052] Specifically, the diameter adjustment device 3 includes an expansion part and a micro air pump. The micro air pump can control the expansion part to expand and constrain it on the arm to prevent the prosthesis from falling. At the same time, the degree of expansion will vary depending on the thickness of the arm, thereby achieving the purpose of adapting to arms of different diameters. And this fixing method is more convenient than fixing it on the chest with a traditional strap. The power of the micro air pump comes from a rechargeable battery. If the prosthesis is an ordinary prosthesis, the battery is located inside the palm 1. If the prosthesis is a mechanical prosthesis controlled by myoelectric control, the micro air pump and the mechanical components share the same power supply.

[0053] The expansion part includes a first expansion part 301 and a second expansion part 302, and the first expansion part 301 and the second expansion part 302 are both fixed to the inner wall of the arm part 2. When fixed, the first expansion part 301 is used to wrap the back part of the arm, and the second expansion part 302 is used to wrap the front part of the arm, so as to improve the comfort by increasing the contact area with the arm and avoid discomfort caused by long-term wearing of the wrapping point.

[0054] The first expansion part 301 and the second expansion part 302 are interconnected, and the micro air pump can inflate the first expansion part 301 and the second expansion part 302 to form a wrapping fixed structure like a flexible clamp to avoid hurting the skin. The output end of the micro air pump is provided with a solenoid valve to control the inflation and deflation of the first expansion part 301 and the second expansion part 302. When fixed, the solenoid valve is closed to prevent the first expansion part 301 and the second expansion part 302 from deflation. When disassembling, the solenoid valve is opened to discharge the gas inside the first expansion part 301 and the second expansion part 302.

[0055] like Figure 4 As shown, in some embodiments, the inner walls of the first expansion part 301 and the second expansion part 302 of the present invention are both provided with ventilation holes 305 to improve air permeability and reduce arm discomfort caused by sweating of the arm.

[0056] A skin limiting groove 303 is provided between the first expansion part 301 and the second expansion part 302. After the first expansion part 301 and the second expansion part 302 are expanded, the arm is located in the skin limiting groove 303 and will be embedded in the skin limiting groove 303 because it is not subjected to pressure, so as to form a limit. This prevents the prosthesis from falling off the arm due to insufficient pressure formed by the first expansion part 301 and the second expansion part 302 due to sweating and other reasons. An anti-rotation groove 304 is provided on the inner wall of the second expansion part 302, and its function is similar to that of the skin limiting groove 303, and is used to prevent the prosthesis from rotating on the arm. At the same time, the anti-rotation groove 304 can serve as an airflow channel to improve the ventilation inside the arm part 2.

[0057] like Figure 3-Figure 6 As shown, in some embodiments, the number of the first expansion parts 301 of the present invention is two, and the two first expansion parts 301 are symmetrically distributed inside the arm part 2, and clamped from both sides so that the arm can be in the center of the arm part 2. A gap is left between the two first expansion parts 301 to improve air circulation, and can prevent the prosthesis from rotating like the anti-rotation groove 304.

[0058] like Figure 7 As shown, in some embodiments, the first expansion part 301 and the second expansion part 302 of the present invention both include an inner covering layer 306, an outer covering layer 307 and a flexible clamping member 308. The flexible clamping member 308 is arranged between the inner covering layer 306 and the outer covering layer 307, and is limited by the inner covering layer 306 and the outer covering layer 307. A soft filler is arranged between the inner covering layer 306 and the outer covering layer 307 to limit the flexible clamping member 308, and the air vent 305 is arranged on the inner covering layer 306. The filler is used to improve comfort and sweat absorption, so that the arm can stay dry in hot and humid weather. And the flexible clamping member 308 is kept at an equal distance after bending.

[0059] like Figure 8 As shown, in some embodiments, the flexible clamp 308 of the present invention includes an airflow duct 3081 and an expansion capsule 3082. The expansion capsule 3082 is an elliptical capsule that can expand and contract, and the expansion capsules 3082 are equidistantly distributed on the airflow duct 3081. When fixing, the airflow duct 3081 is connected to a micro air pump to transmit air. When the air enters the expansion capsule 3082, it will force the expansion capsule 3082 to expand, thereby applying pressure to the arm to form multiple fixed points to improve the stability of the fixation. At the same time, a small airflow channel will be formed between each fixed point due to the cross-section of the expansion capsule 3082, thereby improving the air circulation. The expansion capsule 3082 is set to be elliptical, and its contact point area is larger than that of a sphere, and its specific purpose is to increase the force application point.

[0060] like Figure 4 and Figure 5As shown, in some embodiments, a somatosensory enhancement device 4 is also installed inside the arm part 2 of the present invention, and the somatosensory enhancement device 4 can blow air and provide heat to the inside of the arm part 2. It is mainly set for summer and winter. In summer, the arm will feel stuffy and hot if it wears a prosthesis for a long time, and it is easy to have heat rash, redness and swelling and other phenomena. The role of blowing air is to lower the temperature of the arm and accelerate the evaporation of sweat to keep the arm relatively dry. In winter, the arm may sweat if it is wrapped for a long time, and the sweat at this time will make the arm colder. Blowing hot air can prevent the arm from catching cold. The heating temperature is controlled between 15-20 degrees by a temperature control device to avoid low-temperature burns.

[0061] like Figure 4 , Fig. 9 and Fig.10 As shown, in some embodiments, the somatosensory enhancement device 4 of the present invention includes an isolation component 401, a heating component 402, an air supply component 403 and an electrical support 404. The isolation component 401 and the electrical support 404 are both fixed inside the arm 2, and are used to separate the end of the arm and the mechanical elements inside the palm 1 respectively. A gap is left between the isolation component 401 and the electrical support 404 for installing the heating component 402 and the air supply component 403. The heating component 402 and the air supply component 403 are located between the isolation component 401 and the electrical support 404, and the air supply component 403 is arranged between the heating component 402 and the electrical support 404. When the air supply component 403 blows air in the direction of the arm, the airflow will blow the heat generated by the heating component 402 to the arm. The heating component 402 is a resistive heating tube, and the heating component 402 drives the temperature control switch, and stops working when the temperature reaches the threshold. The air supply component 403 is specifically a small motor that drives the fan blades to rotate, thereby driving the air to flow in the direction of the arm.

[0062] like Figure 5 As shown, in some embodiments, the isolation component 401 of the present invention includes an isolation plate 4011, and a ventilation hole 4012 is provided on the isolation plate 4011. The isolation plate 4011 is used to isolate the arm to prevent the thinner arm from directly contacting the heating component 402 and causing risks. The ventilation hole 4012 is used to allow air to pass through.

[0063] like Fig.10 As shown, in some embodiments, the electrical support part 404 of the present invention includes a support plate 4041, and the support plate 4041 is used to support the heating component 402 and the air supply component 403. The support plate 4041 is provided with ventilation holes 4042 for air circulation so that the air supply component 403 can extract air when working. A power shunt 4043 is provided on one side of the support plate 4041 away from the isolation component 401, and the power shunt 4043 is electrically connected to the heating component 402 and the air supply component 403 respectively.

[0064] In some embodiments, the connection between the arm 2 and the palm 1 of the present invention is respectively provided with a ventilation slot 201 and a button indication area 202. The ventilation slot 201 is provided at the connection between the arm 2 and the palm 1 to improve the smoothness of the airflow entering the inside of the arm 2. After wearing the prosthesis, the main body of the prosthesis will be blocked by the sleeve, and the ventilation slot 201 is provided at the wrist, which can reduce the blocking of the sleeve. Switches for controlling the heating component 402, the air supply component 403 and the micro air pump are installed below the button indication area 202. The switches for controlling the heating component 402 and the air supply component 403 are electrically connected to the power shunt 4043. The switch is covered, so that the aesthetics can be improved and the occurrence of accidental touches can be reduced. The area where the button indication area 202 is located is made of simulated leather, which can trigger the switch by pressing while improving the aesthetics.

[0065] The specific use process of the present invention is as follows:

[0066] Insert the arm from the end of the arm portion 2 into the interior of the arm portion 2;

[0067] According to the different amputation positions, the insertion depth of the hand is adjusted, and the micro air pump is initially started to slightly expand the first expansion part 301 and the second expansion part 302;

[0068] After the position of the prosthesis and the length of the arms on both sides are finally adjusted, the micro air pump is started again to fully expand the first expansion part 301 and the second expansion part 302 so that the entire prosthesis is completely fixed on the arm;

[0069] When necessary, the heating component 402 and / or the air supply component 403 are respectively activated from the button indication area 202 to improve the comfort level;

[0070] When disassembling, the first expansion part 301 and the second expansion part 302 are exhausted by controlling the solenoid valve, so as to release the restraint of the first expansion part 301 and the second expansion part 302 on the arm, and then the prosthesis is removed.

[0071] In summary, the adaptable arm prosthesis of the present invention, by arranging the second expansion part 302 and the skin limiting groove 303 inside the arm part 2, and controlling the expansion degree of the second expansion part 302 and the skin limiting groove 303 by a micro air pump, can be inserted into the arm part 2 to different depths according to the position of the amputation when used by different users, and then the micro air pump is started to expand the second expansion part 302 and the skin limiting groove 303 to fit on the human arm, connecting the palm part 1 and the arm part 2 to the human arm, thereby improving adaptability, eliminating the need for customization for most patients, and reducing time and money costs.

[0072] By setting two first expansion parts 301, setting a gap between the first expansion parts 301, setting a ventilation hole 305 between the first expansion part 301 and the second expansion part 302, and setting an anti-rotation groove 304 inside the second expansion part 302, when the first expansion part 301 and the second expansion part 302 clamp the skin, the skin that is not under pressure will be embedded in the gap between the two first expansion parts 301, in the anti-rotation groove 304 and in the ventilation hole 305, thereby preventing the prosthesis from rotating and slipping.

[0073] By arranging a heating component 402 and an air supply component 403 inside the arm 2 and isolating it from the human body through the isolation component 401, during use, the air supply component 403 can be used to increase the air circulation inside the arm 2 in summer to avoid the arm being stuffy. In winter, the heating component 402 can heat the air and be used in conjunction with the air supply component 403 to keep the arm warm, thereby achieving the effect of improving comfort.

[0074] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0075] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. An adaptive arm prosthesis, comprising a palm portion (1) and an arm portion (2), wherein the palm portion (1) and the arm portion (2) are connected to each other, and a cavity is provided inside the arm portion (2), and the cavity is used to connect the arm; Features: The adaptive arm prosthesis also includes: A diameter adjustment device (3), the diameter adjustment device (3) being arranged inside the cavity of the arm portion (2), and the diameter adjustment device (3) being driven to fix the arm; The diameter adjustment device (3) comprises an expansion part and a micro air pump, and the micro air pump can control the expansion part to expand and constrain it on the arm; The expansion portion comprises a first expansion portion (301) and a second expansion portion (302), wherein the first expansion portion (301) and the second expansion portion (302) are both fixed to the inner wall of the arm portion (2); The first expansion part (301) and the second expansion part (302) are interconnected, and a micro air pump can inflate the first expansion part (301) and the second expansion part (302). An electromagnetic valve is provided at the output end of the micro air pump to control the inflation and deflation of the first expansion part (301) and the second expansion part (302).

2. The adaptive arm prosthesis according to claim 1, characterized in that: The inner walls of the first expansion portion (301) and the second expansion portion (302) are both provided with air holes (305); A skin limiting groove (303) is provided between the first expansion part (301) and the second expansion part (302), and an anti-rotation groove (304) is provided on the inner wall of the second expansion part (302).

3. The adaptive arm prosthesis according to claim 2, characterized in that: The number of the first expansion parts (301) is two, and the two first expansion parts (301) are symmetrically distributed inside the arm part (2), with a gap left between the two first expansion parts (301).

4. The adaptive arm prosthesis according to claim 2, characterized in that: The first expansion portion (301) and the second expansion portion (302) each include an inner covering layer (306), an outer covering layer (307) and a flexible clamping member (308); The flexible clamping member (308) is arranged between the inner covering layer (306) and the outer covering layer (307), and a soft filler is arranged between the inner covering layer (306) and the outer covering layer (307) to limit the position of the flexible clamping member (308); The vent holes (305) are arranged on the inner covering layer (306).

5. The adaptive arm prosthesis according to claim 4, characterized in that: The flexible clamp (308) includes an airflow duct (3081) and an expansion bag (3082). The expansion bag (3082) is an elliptical bag that can expand and contract. The expansion bags (3082) are evenly spaced and distributed on the airflow duct (3081).

6. The adaptive arm prosthesis according to claim 1, characterized in that: A body-sensation enhancement device (4) is also installed inside the arm part (2), and the body-sensation enhancement device (4) can blow air and provide heat to the inside of the arm part (2).

7. The adaptive arm prosthesis according to claim 6, characterized in that: The body sensation enhancement device (4) comprises an isolation component (401), a heating component (402), an air supply component (403) and an electrical appliance support part (404); The isolation component (401) and the electrical appliance support part (404) are both fixed inside the arm part (2), and a gap is left between the isolation component (401) and the electrical appliance support part (404); The heating component (402) and the air supply component (403) are located between the isolation component (401) and the electrical appliance support portion (404), and the air supply component (403) is arranged between the heating component (402) and the electrical appliance support portion (404).

8. The adaptive arm prosthesis according to claim 7, characterized in that: The isolation component (401) comprises an isolation plate (4011), and a ventilation hole (4012) is provided on the isolation plate (4011).

9. The adaptive arm prosthesis according to claim 7, characterized in that: The electrical appliance support portion (404) comprises a support plate (4041), a ventilation hole (4042) is provided on the support plate (4041), a power shunt (4043) is provided on a side of the support plate (4041) away from the isolation component (401), and the power shunt (4043) is electrically connected to the heating component (402) and the air supply component (403), respectively.

10. The adaptive arm prosthesis according to claim 9, characterized in that: A ventilation slot (201) and a button indication area (202) are respectively provided at the connection between the arm portion (2) and the palm portion (1); switches for respectively controlling a heating component (402), an air supply component (403) and a micro air pump are installed below the button indication area (202); The switches controlling the heating component (402) and the air supply component (403) are electrically connected to the power shunt (4043).

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