Myoelectricity forearm prosthesis receiving cavity

Abstract

The utility model discloses a myoelectricity forearm artificial limb accepting cavity which comprises an accepting cavity shell, a cavity body is arranged in the accepting cavity shell, a plurality of myoelectricity induction grooves are formed in the cavity body, myoelectricity electrode induction devices are arranged in the myoelectricity induction grooves, and the myoelectricity electrode induction devices are attached to human body stumps in the cavity body. An adjusting groove is formed in the electromyographic induction groove, an adjusting mechanism for controlling the electromyographic induction device to move is arranged in the adjusting groove, and the adjusting mechanism is connected with the electromyographic induction device; through the structural design of the adjusting mechanism, the position of the myoelectrode sensing device can be adjusted, when a patient perceives discomfort or abnormal body of the patient is recognized through a configured sensor, the myoelectrode sensing device is separated from the residual limb of the human body, danger is avoided, a user does not need to take off the myoelectrode sensing device, and time and labor are saved. And the artificial limb can still be used and controlled, so that the influence on the life of the user is reduced as far as possible under the condition that the safety is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a myoelectric forearm prosthesis receiving cavity. Background Art

[0002] Prosthesis is an artificial prosthesis specially designed and manufactured by engineering technology to compensate for amputees or incomplete limb loss, also known as "prosthetic limb". Its main function is to replace some of the functions of the lost limbs, so that amputees can regain a certain degree of self-care and work ability. It is suitable for amputees due to diseases, traffic accidents, industrial accidents, sports injuries, etc.

[0003] Myoelectric prostheses use myoelectric induction to control prostheses and reproduce the movements of human limbs, so as to restore the amputee's ability to take care of himself and work to a certain extent.

[0004] However, although the induced voltage is not enough to cause direct electric shock to people, when the human body touches the live part, the induced voltage will cause current to flow in the human body, causing symptoms such as skin tingling, muscle contraction, and increased heartbeat, but it will not cause life-threatening. However, long-term contact with electrodes may cause chronic health risks.

[0005] Moreover, the remaining limbs of amputees are inherently more fragile than those of ordinary people, so more attention needs to be paid to avoid danger, so improvements are needed. Utility Model Content

[0006] The utility model aims to provide a myoelectric forearm prosthesis receiving cavity to overcome the deficiencies in the prior art.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] The present application discloses a myoelectric forearm prosthesis receiving cavity, including a receiving cavity shell, a cavity is arranged in the receiving cavity shell, a plurality of myoelectric sensing slots are opened on the cavity, a myoelectric sensing slot is provided with a myoelectrode sensing device, the myoelectric sensing device is attached to the residual limb of the human body in the cavity, an adjustment slot is opened in the myoelectric sensing slot, an adjustment mechanism for controlling the activity of the myoelectric sensing device is arranged in the adjustment slot, and the adjustment mechanism is connected to the myoelectric sensing device.

[0009] Preferably, the adjustment mechanism includes an adjustment shaft provided in the adjustment slot, an adjustment cam is fixedly connected to the adjustment shaft, and a top pressure area and a flat area are provided on the adjustment cam. When the top pressure area moves toward the muscle electrode sensing device, the muscle electrode sensing device fits the human body's residual limb; when the flat area faces the muscle electrode sensing device, the muscle electrode sensing device is separated from the human body's residual limb; a rebound spring is provided between the muscle electrode sensing device and the adjustment slot.

[0010] Preferably, a pressing block is provided on one side of the adjustment groove, the pressing block is slidably connected to the inner wall of the adjustment groove, a fixing piece for fixing the pressing block is provided on the pressing block, and a transmission mechanism for controlling the adjustment mechanism for adjustment is connected between the pressing block and the adjustment mechanism.

[0011] Preferably, the transmission mechanism comprises a transmission gear fixedly connected to the adjusting shaft, a transmission rack movably provided in the adjusting groove, and the transmission rack meshes with and is connected to the transmission gear.

[0012] Preferably, a connecting rod is connected to the pressing block, the connecting rod is connected to the transmission rack and is colinear with the moving trajectory of the transmission rack, and a return spring is connected between the transmission rack and the inner wall of the adjustment slot.

[0013] Preferably, a plurality of wiring grooves are provided on the receiving cavity shell, connecting wires are provided in the wiring grooves, the connecting wires are interconnected, and interfaces are provided on the connecting wires.

[0014] Preferably, an annular wire collecting groove is provided on the receiving cavity shell, and the connecting wire is connected to the annular wire collecting groove.

[0015] Preferably, the number of the electromyographic induction slots and myoelectrode induction devices is 3 to 10.

[0016] Preferably, the myoelectric sensing device is provided with a plurality of myoelectric sensing sheets.

[0017] Preferably, the number of the myoelectric electrode sensing pads is 2 to 5.

[0018] Beneficial effects of the utility model:

[0019] (1) The position of the muscle electrode sensing device can be adjusted through the structural design of the adjustment mechanism. When the patient feels uncomfortable, or when the configured sensor identifies abnormalities in the patient's body, the muscle electrode sensing device is separated from the residual limb to avoid danger. The user does not need to take it off and can still use and control it through the existing prosthesis. While ensuring safety, the impact on the user's life is minimized as much as possible.

[0020] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of a myoelectric forearm prosthesis receiving cavity of the utility model;

[0022] Figure 2 It is a schematic diagram of the planar structure of an embodiment of the utility model;

[0023] Figure 3 It is an embodiment of the present utility model Figure 2 Schematic diagram of the structural section at AA in the middle;

[0024] Figure 4 It is an embodiment of the present utility model Figure 2 Schematic diagram of the cross-section of the structure at the middle BB;

[0025] Figure 5 It is an embodiment of the present utility model Figure 2 Schematic diagram of the cross-section of the structure at CC in the middle;

[0026] Figure 6 It is an embodiment of the present utility model Figure 2 Schematic diagram of the three-dimensional cross-section of the structure at the middle BB;

[0027] Figure 7 In the embodiment of the present utility model Figure 6 Enlarged schematic diagram of the structure at D.

[0028] In the figure: 1. receiving cavity shell; 101. cavity; 2. electromyographic induction slot; 3. myoelectrode induction device; 4. adjustment slot; 5. adjustment mechanism; 501. adjustment shaft; 502. adjustment cam; 5021. top pressure area; 5022. flat area; 503. transmission gear; 504. transmission rack; 505. connecting rod; 506. pressing block; 6. wiring slot; 7. annular wiring slot. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the scope of the utility model. In addition, in the following description, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.

[0030] See also Figures 1 to 5The embodiment of the utility model provides a myoelectric forearm prosthesis receiving cavity, including a receiving cavity shell 1, a cavity 101 is provided in the receiving cavity shell 1, a plurality of myoelectric sensing slots 2 are provided on the cavity 101, a myoelectric sensing slot 2 is provided with a muscle electrode sensing device 3, the muscle electrode sensing device 3 is attached to the human residual limb in the cavity 101, an adjustment slot 4 is provided in the myoelectric sensing slot 2, an adjustment mechanism 5 for controlling the activity of the muscle electrode sensing device 3 is provided in the adjustment slot 4, and the adjustment mechanism 5 is connected to the muscle electrode sensing device 3.

[0031] The adjustment system separates and fits the muscle electrode sensing device 3 to control whether the muscle electrode sensing device 3 is in contact with the human body, which can ensure safety. This is because if only operations such as power off are performed, a certain amount of operation time is required, and there may be a situation where it cannot be turned off, so physical means are needed to operate.

[0032] See also Figure 6 , 7 The adjustment mechanism 5 includes an adjustment shaft 501 provided in the adjustment slot 4, and an adjustment cam 502 is fixedly connected to the adjustment shaft 501. The adjustment cam 502 is provided with a top pressure area 5021 and a gentle area 5022. When the top pressure area 5021 moves toward the muscle electrode sensing device 3, the muscle electrode sensing device 3 fits the human body's residual limb; when the gentle area 5022 moves toward the muscle electrode sensing device 3, the muscle electrode sensing device 3 is separated from the human body's residual limb; a rebound spring is provided between the muscle electrode sensing device 3 and the adjustment slot 4.

[0033] When the muscle electrode sensing device 3 is in the use state, the rebound spring exerts a reaction force on it to control it to rebound and return to the separated state;

[0034] vice versa.

[0035] A pressing block 506 is provided on one side of the adjusting groove 4, and the pressing block 506 is slidably connected to the inner wall of the adjusting groove 4. A fixing piece for fixing the pressing block 506 is provided on the pressing block 506, and a transmission mechanism for controlling the adjusting mechanism 5 to adjust is connected between the pressing block 506 and the adjusting mechanism 5.

[0036] The fixing member includes any one of a buckle, a nail, and a lock.

[0037] The transmission mechanism includes a transmission gear 503 fixedly connected to the adjustment shaft 501 , and a transmission rack 504 movably provided in the adjustment slot 4 , and the transmission rack 504 is meshed and connected with the transmission gear 503 .

[0038] The pressing block 506 is connected to a connecting rod 505 , which is connected to the transmission rack 504 and is colinear with the moving trajectory of the transmission rack 504 . A return spring is connected between the transmission rack 504 and the inner wall of the adjustment slot 4 .

[0039] The return spring controls the transmission rack 504. When the transmission rack 504 receives the force control to drive the transmission gear 503 to rotate, the return spring returns it to its original position and fixes it through the fixing piece provided on the pressing block 506, thereby offsetting the action of the return spring and maintaining the use state.

[0040] vice versa.

[0041] The receiving cavity shell 1 is provided with a plurality of wiring grooves 6 , in which connecting wires are arranged, the connecting wires are connected to each other, and interfaces are arranged on the connecting wires.

[0042] The receiving cavity shell 1 is provided with an annular wire collecting groove 7 , and the connecting wire is connected to the annular wire collecting groove 7 .

[0043] The number of the electromyographic induction slots 2 and the electromyographic electrode induction devices 3 is 3 to 10.

[0044] The myoelectric sensing device 3 is provided with a plurality of myoelectric sensing sheets.

[0045] The number of the muscle electrode sensing sheets is 2 to 5.

[0046] Working process of this utility model:

[0047] The utility model provides a myoelectric forearm prosthesis receiving cavity, and in this embodiment, the pressing state is the separation state of the myoelectrode sensing device 3. During use, if discomfort occurs, the user immediately presses down the pressing block 506, driving the connecting rod 505 to move, and then driving the transmission rack 504 to move, driving the transmission gear 503 to rotate through meshing, and then driving the adjustment shaft 501 to rotate, thereby driving the adjustment cam 502 to rotate, and the position in contact with the myoelectrode sensing device 3 rotates from the top pressure area 5021 to the flat area 5022. At this time, the rebound spring connected to the myoelectrode sensing device 3 drives the myoelectrode sensing device 3 to rebound and reset, and separate from the human body's residual limb, and then fixes the pressing block 506 through the fixing piece to prevent it from returning to the use state;

[0048] After disassembly or when it needs to be used again, the fixing part is disassembled, and the pressing block 506 rebounds through the reset spring, driving the connecting rod 505 to move, and then driving the transmission rack 504 to move, driving the transmission gear 503 to rotate through meshing, and then driving the adjustment shaft 501 to rotate, thereby driving the adjustment cam 502 to rotate, and the position in contact with the muscle electrode sensing device 3 rotates from the flat area 5022 to the top pressure area 5021, and the muscle electrode sensing device 3 returns to the position of the use state.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A myoelectric forearm prosthesis receiving cavity, characterized in that: The invention comprises a receiving cavity shell (1), wherein a cavity (101) is provided in the receiving cavity shell (1), wherein a plurality of myoelectric sensing slots (2) are provided on the cavity (101), wherein a myoelectric sensing slot (2) is provided with a myoelectric sensing device (3), wherein the myoelectric sensing device (3) is fitted to a residual human limb in the cavity (101), wherein an adjustment slot (4) is provided in the myoelectric sensing slot (2), wherein an adjustment mechanism (5) for controlling the activity of the myoelectric sensing device (3) is provided in the adjustment slot (4), wherein the adjustment mechanism (5) is connected to the myoelectric sensing device (3).

2. The myoelectric forearm prosthesis receiving cavity according to claim 1, characterized in that: The adjustment mechanism (5) comprises an adjustment shaft (501) arranged in the adjustment slot (4); an adjustment cam (502) is fixedly connected to the adjustment shaft (501); a top pressure area (5021) and a gentle area (5022) are arranged on the adjustment cam (502); when the top pressure area (5021) moves towards the muscle electrode sensing device (3), the muscle electrode sensing device (3) fits the human body residual limb; when the gentle area (5022) moves towards the muscle electrode sensing device (3), the muscle electrode sensing device (3) is separated from the human body residual limb; and a rebound spring is arranged between the muscle electrode sensing device (3) and the adjustment slot (4).

3. The myoelectric forearm prosthesis receiving cavity as claimed in claim 2, characterized in that: A pressing block (506) is provided on one side of the adjusting groove (4), the pressing block (506) being slidably connected to the inner wall of the adjusting groove (4), a fixing piece for fixing the pressing block (506) is provided on the pressing block (506), and a transmission mechanism for controlling the adjusting mechanism (5) to perform adjustment is connected between the pressing block (506) and the adjusting mechanism (5).

4. The myoelectric forearm prosthesis receiving cavity according to claim 3, characterized in that: The transmission mechanism comprises a transmission gear (503) fixedly connected to the adjustment shaft (501), a transmission rack (504) movably provided in the adjustment slot (4), and the transmission rack (504) meshing with and connected to the transmission gear (503).

5. The myoelectric forearm prosthesis receiving cavity according to claim 4, characterized in that: The pressing block (506) is connected to a connecting rod (505), the connecting rod (505) is connected to the transmission rack (504) and is colinear with the moving trajectory of the transmission rack (504), and a return spring is connected between the transmission rack (504) and the inner wall of the adjustment slot (4).

6. The myoelectric forearm prosthesis receiving cavity according to claim 1, characterized in that: The receiving cavity shell (1) is provided with a plurality of wiring grooves (6), the wiring grooves (6) are provided with connecting wires, the connecting wires are interconnected, and interfaces are provided on the connecting wires.

7. The myoelectric forearm prosthesis receiving cavity according to claim 6, characterized in that: An annular wire collecting groove (7) is provided on the receiving cavity shell (1), and the connecting wire is connected to the annular wire collecting groove (7).

8. The myoelectric forearm prosthesis receiving cavity according to claim 1, characterized in that: The number of the myoelectric induction slots (2) and the myoelectric electrode induction devices (3) is 3 to 10.

9. The myoelectric forearm prosthesis socket according to claim 1, characterized in that: The myoelectric electrode sensing device (3) is provided with a plurality of myoelectric electrode sensing sheets.

10. The myoelectric forearm prosthesis receiving cavity according to claim 9, characterized in that: The number of the muscle electrode sensing sheets is 2 to 5.

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