Vibrating simulation device for Parkinson patient nursing teaching

Abstract

The invention provides a tremor simulation device for nursing teaching of Parkinson patients, and relates to the technical field of symptom simulation devices.The tremor simulation device comprises a hand model, and a finger driving mechanism is installed at the position, close to the first web, of the hand back of the hand model; the near-end interphalangeal joint and the far-end interphalangeal joint on the index finger and the interphalangeal joint on the thumb of the hand model are respectively provided with a magnetorheological damper, and the interphalangeal joints of the index finger and the thumb of the hand model and the upper end of the metacarpal joint moving part are respectively provided with a double-fisheye bearing. Through the cooperation of the finger driving mechanism and the magneto-rheological damper, the device can simulate the specific pill rubbing action and tremor state of the Parkinson's disease patient, including the obvious performance in a resting state and the aggravating phenomenon under the conditions of movement and emotional tension.

Description

Technical Field

[0001] The present invention relates to the technical field of disease state simulation devices, and particularly to a tremor simulation device for Parkinson's patient care teaching. Background Art

[0002] Parkinson's disease is a common neurodegenerative disease. Its first symptom is often the resting tremor of a single hand, which is most obvious in the resting state. Currently, the care of Parkinson's disease patients mainly relies on traditional methods such as video cases, written materials, and oral explanations by teachers. Although these methods can provide certain knowledge and information, they cannot enable caregivers to experience the actual state of the patient's tremor up close and realistically. Especially when it is necessary to understand and feel the inconvenience of daily life caused by the patient's tremor, these methods are inadequate and cannot provide an intuitive feeling. Regarding the unique resting tremor symptom of Parkinson's disease patients, especially its obvious manifestation in the resting state and the exacerbation phenomenon in the situations of movement and emotional tension, the traditional care teaching means obviously have deficiencies. The most common pill-rolling movement in the patient's daily life, that is, the mutual friction between the thumb and the index finger, not only reflects the characteristics of the tremor but also brings great challenges to the patient's daily life and nursing work. Therefore, there is an urgent need for a device that can simulate this tremor to help caregivers more intuitively observe and feel the tremor, so as to provide more targeted care and rehabilitation guidance. Summary of the Invention

[0003] The purpose of the present invention is to solve the deficiencies existing in the prior art and provide a tremor simulation device for the pill-rolling movement of Parkinson's patients during the care teaching process, which helps caregivers more intuitively observe and feel the tremor, so as to provide more targeted care and rehabilitation guidance.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: A tremor simulation device for Parkinson's patient care teaching includes a hand model. A finger driving mechanism is installed at the back of the hand of the hand model near the thumb web. Magnetorheological dampers are installed at the proximal interphalangeal joint and the distal interphalangeal joint of the index finger of the hand model and the interphalangeal joint of the thumb. Double spherical bearings are installed at the upper ends of the interphalangeal joints and the metacarpophalangeal joint activity parts of the index finger and the thumb of the hand model. The driving end of the finger driving mechanism is connected to the main spherical bearing away from the spherical bearing at the end of the hand model. Secondary spherical bearings are provided for the spherical bearings at the piston rod ends of the magnetorheological dampers. The finger driving mechanism includes a brushless motor. There are two brushless motors respectively facing the index finger and the thumb of the hand model. Eccentric wheels are installed at the output ends of the two brushless motors. Miniature bearings are sleeved around the eccentric wheels. An index finger link and a thumb link are movably installed around the two miniature bearings. The index finger link and the thumb link are designed in a segmented manner. The index finger link and the thumb link between adjacent main fish-eye bearings are connected through a universal ball head structure.

[0005] Furthermore, the outer sides of the index finger and the thumb of the hand model are covered with a flexible silica gel sheath, and the surface of the flexible silica gel sheath imitates finger textures and has a Shore hardness of 15A - 20A.

[0006] Furthermore, the brushless motor is installed on a nylon base. The nylon base is fixed on the hand model. A silica gel buffer pad with a Shore hardness of 40A is installed between the nylon base and the brushless motor.

[0007] Furthermore, the miniature bearings are selected as miniature deep groove ball bearings, and E-type snap rings are installed at both ends of the miniature bearings.

[0008] Furthermore, the magnetorheological damper is embedded and bolted on the proximal interphalangeal joint and the distal interphalangeal joint of the index finger and the interphalangeal joint of the thumb, and a housing is provided on the periphery. The piston rod end of the magnetorheological damper is connected to the auxiliary fish-eye bearing.

[0009] Furthermore, the inner rings of the main fish-eye bearing and the auxiliary fish-eye bearing can rotate 360° and yaw 10° - 20°.

[0010] Furthermore, the index finger link is composed of three link segments, and the thumb link is composed of two link segments.

[0011] Furthermore, the universal ball head structure is composed of a ball seat and a ball head. The ball head is rotatably connected in the ball seat. A lubricating coating is provided between the ball head and the ball seat. The ball seat and the ball head are respectively fixed to the ends of the adjacent index finger link and thumb link.

[0012] Furthermore, the hand model is installed on a teaching support, and a tremor simulation auxiliary lighting lamp is equipped on the teaching support.

[0013] Furthermore, a protective shell is installed around the nylon base. A control module is installed on the protective shell. The control module is electrically connected to the brushless motor and the magnetorheological damper, and the control module is connected to a mobile terminal for receiving instructions from the mobile terminal and dynamically adjusting the rotation speed of the brushless motor and the damping force of the magnetorheological damper.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Addressing the deficiencies of the prior art: In view of the deficiencies of traditional nursing teaching methods in simulating the tremors of Parkinson's disease patients, the present invention provides a device capable of truly simulating tremors, enabling nursing staff to more intuitively observe and feel the tremors, thereby providing more targeted nursing and rehabilitation guidance.

[0015] Truly simulating tremors: Through the cooperation of a finger driving mechanism and a magnetorheological damper, the present invention can simulate the characteristic pill-rolling movement and tremor state of Parkinson's disease patients, including the obvious manifestations in the resting state and the exacerbation under movement and emotional stress.

[0016] Overall structure: The device is reasonably designed. The finger driving mechanism uses components such as a brushless motor, an eccentric wheel, a micro bearing, and a connecting rod to achieve flexible driving of the fingers; the magnetorheological damper is used to simulate the damping effect of tremors, making the simulation more realistic.

[0017] Flexible connection of the universal ball head structure: The index finger connecting rod and the thumb connecting rod are connected through a universal ball head structure, realizing flexible rotation and yaw of the fingers, further enhancing the authenticity of the simulation.

[0018] Flexible sheath enhances the experience: The outer sides of the index finger and thumb of the hand model are covered with a flexible silicone sheath, with surface bionic finger textures and a moderate Shore hardness, enhancing the authenticity of the simulation and the tactile experience.

[0019] Buffer protection: A silicone buffer pad is installed between the brushless motor and the nylon base, effectively reducing the vibration and noise generated during motor operation, while protecting the motor and the hand model.

[0020] Precise control: The brushless motor and the magnetorheological damper are electrically connected through a control module and connected to a mobile terminal, realizing precise control of tremor simulation, and the rotational speed of the brushless motor and the damping force of the magnetorheological damper can be dynamically adjusted as needed.

[0021] Teaching auxiliary function: The hand model is installed on a teaching bracket and equipped with an auxiliary illuminating lamp for tremor simulation, providing convenience and auxiliary functions for teaching.

[0022] Easy to operate and maintain: The overall design of the device is simple and clear, easy to operate and maintain, reducing the use cost and maintenance difficulty. Description of the drawings

[0023] Figure 1 It is a schematic diagram of the overall structure of a tremor simulation device for Parkinson's patient nursing teaching provided by the present invention; Figure 2 It is a schematic diagram of the hand model structure of a tremor simulation device for Parkinson's patient nursing teaching provided by the present invention; Figure 3Schematic diagram of the index finger part structure of the hand model of a tremor simulation device for Parkinson's patient care teaching provided by the present invention; Figure 4 Schematic diagram of the brushless motor structure of a tremor simulation device for Parkinson's patient care teaching provided by the present invention; Figure 5 Schematic diagram of the overall structure of the finger drive mechanism of a tremor simulation device for Parkinson's patient care teaching provided by the present invention; Figure 6 Drive connection diagram of the finger drive mechanism of a tremor simulation device for Parkinson's patient care teaching provided by the present invention.

[0024] Legend: 1. Hand model; 101. Flexible silicone sheath; 102. Teaching bracket; 103. Tremor simulation auxiliary lighting lamp; 2. Finger drive mechanism; 21. Brushless motor; 22. Eccentric wheel; 23. Micro bearing; 231. E-type snap ring; 24. Index finger link; 25. Thumb link; 201. Nylon base; 202. Silicone buffer pad; 203. Protective shell; 3. Magnetorheological damper; 301. Housing; 4. Double spherical eye bearing; 41. Main spherical eye bearing; 42. Sub-spherical eye bearing; 5. Universal ball head structure; 501. Ball seat; 502. Ball head. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant. Several embodiments of the present invention are given. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Embodiment

[0029] As Figures 1-6 shown, the present invention provides a technical solution: designed based on the existing hand model 1, and the hand model 1 is selected from existing hand models according to requirements. Specifically: Material and structure: The hand model 1 is made of high-fidelity silicone material, and the internal skeleton is made of lightweight alloy material, which not only ensures the softness and realism of the model but also has sufficient strength to support the installation of components such as the finger drive mechanism 2. The finger joints of the hand model 1 are designed with reference to the real finger joint structure of the human body, enabling flexible movement in multiple angles and directions, providing a good basis for simulating tremor movements. Joint connection: Each finger joint is connected by a precise bearing and connecting rod structure to ensure the smoothness and stability of joint movement. A tiny gap adjustment device is also provided at the joint connection to adjust the tightness of the joint according to actual teaching needs to simulate the stiffness of fingers of different patients.

[0030] A finger drive mechanism 2 is installed on the back of the hand of the hand model 1 near the thumb web. Magnetorheological dampers 3 are installed on the proximal interphalangeal joint and distal interphalangeal joint of the index finger of the hand model 1 and the interphalangeal joint of the thumb. Working principle: The magnetorheological damper 3 utilizes the characteristic that the viscosity of the magnetorheological fluid changes under the action of a magnetic field to change the damping force by adjusting the magnetic field strength. In the nursing teaching for Parkinson's patients, the damping effect of finger tremors of patients in different disease stages can be simulated by adjusting the damping force of the magnetorheological damper 3 to make the simulated movements more realistic. Double spherical bearings 4 are installed at the upper ends of the interphalangeal joints and metacarpophalangeal joint activity parts of the index finger and thumb of the hand model 1. The driving end of the finger drive mechanism 2 is connected to the main spherical bearing 41 of the double spherical bearing 4 far from the hand model 1 end, and auxiliary spherical bearings 42 are provided for the double spherical bearings 4 at the piston rod ends of the magnetorheological dampers 3. The finger drive mechanism 2 includes a brushless motor 21. The brushless motor 21 has two outputs respectively facing the index finger and the thumb of the hand model 1. Eccentric wheels 22 are installed at the output ends of the two brushless motors 21. Miniature bearings 23 are sleeved around the eccentric wheels 22. An index finger link 24 and a thumb link 25 are movably installed around the two miniature bearings 23. The index finger link 24 and the thumb link 25 are designed in a segmented manner, which increases the flexibility and diversity of finger movement, restores the tremor state, and the index finger link 24 and the thumb link 25 between adjacent main fish-eye bearings 41 are all connected through a universal ball head structure 5.

[0031] Among them, the brushless motor 21 has the advantages of high efficiency, low noise, long service life, etc. Its rotation speed can be precisely adjusted through the control module. The two brushless motors 21 independently drive the index finger and the thumb respectively, realizing the individual control of the tremor movements of different fingers and being able to simulate more complex and more realistic tremor patterns. Embodiment

[0032] As Figures 1-6 shown, a flexible silicone sheath 101 is covered on the outer sides of the index finger and the thumb of the hand model 1, and the surface of the flexible silicone sheath 101 imitates finger textures and has a Shore hardness of 15A - 20A. Such a design not only increases the authenticity of the simulation but also enables the user to feel a touch closer to that of a real finger during operation.

[0033] The brushless motor 21 is installed on a nylon base 201. The nylon base 201 is fixed on the hand model 1. A silicone buffer pad 202 with a Shore hardness of 40A is installed between the nylon base 201 and the brushless motor 21. The silicone buffer pad 202 can effectively reduce the vibration and noise generated during the operation of the brushless motor 21 and at the same time protect the brushless motor 21 and the hand model 1.

[0034] The miniature bearings 23 are selected as miniature deep groove ball bearings. E-type snap rings 231 are installed at both ends of the miniature bearings 23 to ensure that the miniature bearings 23 are firmly installed and operate stably.

[0035] The magnetorheological dampers 3 are embedded and bolted on the proximal interphalangeal joint and the distal interphalangeal joint of the index finger and the interphalangeal joint of the thumb, and a housing 301 is provided on the periphery. The piston rod end of the magnetorheological damper 3 is connected to the secondary fish-eye bearing 42. The housing 301 plays a protective role for the magnetorheological damper 3.

[0036] The inner rings of the main fish-eye bearings 41 and the secondary fish-eye bearings 42 can rotate 360° and yaw 10° - 20°, making the movement of the finger joints more flexible and being able to simulate tremor movements closer to those of real fingers.

[0037] The index finger link 24 is composed of three sections of links, and the thumb link 25 is composed of two sections of links. This segmented design increases the flexibility of finger movement.

[0038] The universal ball head structure 5 is composed of a ball seat 501 and a ball head 502. The ball head 502 is rotatably connected within the ball seat 501. A lubricating coating is provided between the ball head 502 and the ball seat 501 to reduce friction and make the rotation smoother. The ball seat 501 and the ball head 502 are respectively fixed to the ends of the adjacent index finger link 24 and thumb link 25.

[0039] The hand model 1 is installed on the teaching support 102. The teaching support 102 is equipped with a tremor simulation auxiliary lighting lamp 103. When the tremor simulation auxiliary lighting lamp 103 is turned on, it assists in observing the tremor simulation device.

[0040] A protective shell 203 is installed on the periphery of the nylon base 201. A control module is installed on the protective shell 203. The control module is electrically connected to the brushless motor 21 and the magnetorheological damper 3, and the control module is connected to a mobile terminal for receiving instructions from the mobile terminal to dynamically adjust the rotation speed of the brushless motor 21 and the damping force of the magnetorheological damper 3.

[0041] Workflow: When using a tremor simulation device for Parkinson's patient care teaching, first, the hand model 1 is stably placed at a suitable teaching position through the teaching support 102. A connection is established between the mobile terminal (such as a controller, mobile phone, tablet computer, etc.) and the control module, and the rotation speed of the brushless motor 21 and the damping force parameters of the magnetorheological damper 3 are set. For example, if it is necessary to simulate the tremor in the resting state of Parkinson's disease patients, the rotation speed of the brushless motor 21 can be set to a lower value, and the damping force of the magnetorheological damper 3 can be set to a smaller value; if it is necessary to simulate the phenomenon of increased tremor during movement or emotional tension, the rotation speed of the brushless motor 21 and the damping force of the magnetorheological damper 3 are correspondingly increased; After setting the parameters, the brushless motor 21 is started. The brushless motor 21 drives the eccentric wheel 22 to rotate. The eccentric wheel 22 drives the index finger link 24 and the thumb link 25 to move through the micro bearing 23. Since the adjacent links are connected by the universal ball head structure 5, and a double fish-eye bearing 4 that can rotate 360° and yaw 10° - 20° is installed at the finger joint, the index finger and thumb can simulate the tremor state similar to the pill-rolling movement of Parkinson's disease patients. At the same time, the magnetorheological damper 3 generates a corresponding damping effect on the tremor action according to the set damping force parameters, further enhancing the authenticity of the simulation; During the teaching process, the nursing staff can closely observe the tremor actions of the index finger and thumb on the hand model 1, feel the characteristics such as the frequency and amplitude of the tremor, and more intuitively understand the inconvenience of daily life brought to Parkinson's disease patients due to tremor. At the same time, they can also physically touch the hand model 1 to personally experience the impact of tremor on nursing work, so as to provide more targeted nursing and rehabilitation guidance; After the teaching is over, turn off the brushless motor 21, disconnect the mobile terminal from the control module, remove the hand model 1 from the teaching bracket 102, and store it properly for future use.

[0042] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tremor simulation device for Parkinson's patient care teaching, comprising a hand model (1), characterized in that: The hand model (1) has a finger drive mechanism (2) installed on the back of the hand near the base of the thumb, the proximal interphalangeal joint and the distal interphalangeal joint on the index finger and the interphalangeal joint on the thumb of the hand model (1) are both equipped with magnetorheological dampers (3), and the interphalangeal joints and upper ends of the active parts of the metacarpal joints of the index finger and thumb of the hand model (1) are both equipped with double fisheye bearings (4); The driving end of the finger driving mechanism (2) is connected to a main fisheye bearing (41) of the double fisheye bearing (4) at the end away from the hand model (1), and the double fisheye bearing (4) at the piston rod end of the magnetorheological damper (3) is provided with a secondary fisheye bearing (42); The finger drive mechanism (2) comprises a brushless motor (21), the brushless motor (21) having two index fingers and thumbs facing the hand model (1) respectively, the output ends of the two brushless motors (21) being mounted with eccentric wheels (22), the periphery of the eccentric wheels (22) being sleeved with miniature bearings (23), the peripheries of the two miniature bearings (23) being movably mounted with index finger links (24) and thumb links (25), the index finger links (24) and thumb links (25) being of segmented design, and the index finger links (24) and thumb links (25) between adjacent main fisheye bearings (41) being connected via a universal ball head structure (5).

2. The tremor simulation device for Parkinson's patient care teaching according to claim 1, wherein: The outer sides of the index finger and thumb of the hand model (1) are covered with a flexible silicone sheath (101), and the surface of the flexible silicone sheath (101) has a bionic finger texture and a Shore hardness of 15A-20A.

3. The tremor simulation device for Parkinson's patient care teaching according to claim 1, characterized in that: The brushless motor (21) is mounted on a nylon base (201), and the nylon base (201) is fixed on the hand model (1). A silicone cushion (202) is mounted between the nylon base (201) and the brushless motor (21), and has a Shore hardness of 40A.

4. A tremor simulation device for Parkinson's patient care teaching according to claim 1, characterized in that: The miniature bearing (23) is a miniature deep groove ball bearing, and both ends of the miniature bearing (23) are mounted with E-type retaining springs (231).

5. The tremor simulation device for Parkinson's patient care teaching according to claim 1, wherein: The magnetorheological damper (3) is bolted and installed on the proximal interphalangeal joint and the distal interphalangeal joint of the index finger and the interphalangeal joint of the thumb, and is provided with a shell (301) on the periphery. The piston rod end of the magnetorheological damper (3) is connected to the auxiliary fisheye bearing (42).

6. The tremor simulation device for Parkinson's patient care teaching according to claim 1, wherein: The inner rings of the main fisheye bearing (41) and the auxiliary fisheye bearing (42) can rotate 360 ​​degrees and deflect 10 degrees to 20 degrees.

7. A tremor simulation device for Parkinson's patient care teaching according to claim 1, characterized in that: The index finger connecting rod (24) is composed of three connecting rod sections, and the thumb connecting rod (25) is composed of two connecting rod sections.

8. The tremor simulation device for Parkinson's patient care teaching according to claim 1, characterized in that: The universal ball head structure (5) is composed of a ball seat (501) and a ball head (502); the ball head (502) is rotatably connected in the ball seat (501); a lubricating coating is provided between the ball head (502) and the ball seat (501); and the ball seat (501) and the ball head (502) are respectively fixed to the ends of adjacent index finger connecting rods (24) and thumb connecting rods (25).

9. A tremor simulation device for Parkinson's patient care teaching according to claim 1, characterized in that: The hand model (1) is mounted on a teaching support (102), and the teaching support (102) is equipped with a tremor simulation auxiliary lighting lamp (103).

10. A tremor simulation device for Parkinson's patient care teaching according to claim 3, characterized in that: A protective case (203) is installed on the periphery of the nylon base (201). A control module is installed on the protective case (203). The control module is electrically connected to the brushless motor (21) and the magnetorheological damper (3), and the control module is connected to a mobile terminal for receiving instructions from the mobile terminal to dynamically adjust the rotational speed of the brushless motor (21) and the damping force of the magnetorheological damper (3).

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