阅读说明：本技术 一种基于磁流变液的指关节震颤抑制装置 (Finger joint tremor suppression device based on magnetorheological fluid ) 是由 刘新华 申玉瑞 华德正 方淙敏 陈红明 曹瑞 刘银奎 王燕 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种基于磁流变液的指关节震颤抑制装置,包括信号收集单元、信号处理装置、软体手套、密封口、磁场发生装置、磁流变液、软体手套外层、软体手套内层。本发明的有益效果是：通过测量手部各个指关节与指骨的震颤信号,分别控制相应指关节处的磁场发生装置,进而产生不同的磁场强度以实现各个指关节的精确防震颤控制,针对性的实现患者手指的防震颤；以磁流变液控制取代传统的机械设备控制,精简了整体结构,降低了能耗；采用隔磁性的亲肤软体材料,避免磁场分布在磁流变液区域之外,有效提高手指及指骨处磁场强度的同时还提高了患者的穿戴舒适性。(The invention discloses a finger joint tremor suppression device based on magnetorheological fluid, which comprises a signal collection unit, a signal processing device, a soft glove, a sealing opening, a magnetic field generation device, the magnetorheological fluid, a soft glove outer layer and a soft glove inner layer. The invention has the beneficial effects that: the tremor signals of all finger joints and finger bones of the hand are measured, the magnetic field generating devices at the corresponding finger joints are respectively controlled, and then different magnetic field strengths are generated to realize accurate anti-tremor control of all finger joints and pertinence anti-tremor of the fingers of a patient; the magnetorheological fluid control is used for replacing the traditional mechanical equipment control, the integral structure is simplified, and the energy consumption is reduced; the skin-friendly soft material with magnetism isolation is adopted, so that the magnetic field is prevented from being distributed outside the magnetorheological fluid area, the magnetic field intensity of fingers and phalanges is effectively improved, and the wearing comfort of a patient is improved.)

1. A finger joint tremor suppression device based on magnetorheological fluid comprises a signal collection unit (1), a signal processing device (2) and a soft glove (3); the method is characterized in that: the signal collecting unit (1) is arranged on the outer side of a soft glove (3) corresponding to each finger joint of a hand, the signal processing device (2) is arranged on the outer side of the soft glove (3) corresponding to the back of a palm, each soft glove (3) comprises a soft glove outer layer (7) and a soft glove inner layer (8), a magnetic field generating device (5) is arranged at a gap between the soft glove outer layer (7) and the soft glove inner layer (8), magnetorheological fluid (6) is filled in a cavity between every two adjacent magnetic field generating devices (5), a sealing opening (4) is formed in the inner side of the corresponding wrist on the outer side of each soft glove (3), and the signal collecting unit (1), the signal processing device (2), each soft glove (3), the sealing opening (4), each magnetic field generating device (5), the magnetorheological fluid (6), the soft glove outer layer (7) and the sealing opening (4) are formed in the inner, An inner layer (8) of the soft glove.

2. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the signal collecting unit (1) is a sheet resistance strain type vibration sensor.

3. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the signal collecting device (2) comprises a signal processing unit and a micro power supply, and the signal processing unit is a PID controller.

4. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the soft glove (3) is of a double-layer hollow structure, and the two layers are both made of skin-friendly soft materials and are tightly attached to the hand of a patient.

5. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the magnetic field generating device (5) is a circular coil, and the magnetic field generating device (5) is arranged in the middle interlayer of the soft glove (3) corresponding to each phalanx and finger joint of the finger.

6. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the middle interlayer of the soft glove (3) is filled with the magnetorheological fluid (6).

7. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the signal collecting unit (1), the signal processing device (2) and the magnetic field generating device (5) are connected through a circuit.

8. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the number and the specification of the signal collecting unit (1) and the magnetic field generating device (5) are not unique.

9. The magnetorheological fluid-based finger joint tremor suppression device of claim 1, wherein: the sealing port (4) is directly drilled in the soft glove (3), and the sealing port (4) adopts a piston ring blocking type sealing mode.

Technical Field

The invention relates to a finger joint tremor suppression device, in particular to a finger joint tremor suppression device based on magnetorheological fluid, and belongs to the technical field of medical auxiliary instruments.

Background

The term "tremor" refers to the shaking or tremor of a human body, especially a part of the body, such as a finger, an arm, a head, etc., which is called "tremor" medically. Tremor is an involuntary, regular, approximately sinusoidal, reciprocating limb movement that is one of the most common symptoms of neurological disease. Investigations have shown that tremors of varying degrees occur in about 10% of the general population and in about 40% in elderly. Tremor brings inconvenience to the daily life of the tremor patient, such as the inability to write, grasp, etc. normally. The life and social contact of the patient are greatly influenced, and the serious patient even loses the confidence of life.

The shockproof and tremor-proof rehabilitation device at the present stage mainly adopts two modes: one is a 'passive' anti-vibration control method, which mainly changes the biomechanical characteristics of the whole robot system by continuously adjusting the joint damping of the robot system, thereby realizing the anti-vibration purpose; the other is an active anti-tremor control method, which mainly controls the anti-tremor structure to generate reverse motion by measuring tremor motion signals of limbs in real time, thereby achieving the anti-tremor purpose.

However, most anti-tremor devices focus on the problem of anti-tremor of the arms and wrists, ignoring the tremor of the fingers themselves. In addition, most anti-tremor devices suffer from complex mechanisms, large space occupation, and poor wearing comfort due to the rigid structural connection.

Magnetorheological fluid: the magnetic rheological liquid is a new type composite material, mainly composed of soft magnetic particles, base carrier liquid and dispersing agent. The magnetorheological fluid has excellent controllability, can rapidly show controllable viscosity and shear stress change under the action of a magnetic field, and the size of the magnetorheological fluid is related to the intensity of an external magnetic field; after the magnetic field is removed, the liquid can be quickly transformed into Newtonian fluid from a solid-like state. This change is reversible and responds rapidly, and can be completed in a few milliseconds.

Disclosure of Invention

The invention aims to solve the problems and provides a finger joint tremor suppression device based on magnetorheological fluid, and the soft glove can effectively improve wearing comfort and convenience on the basis of effectively suppressing tremor of hands, particularly fingers.

The invention realizes the purpose through the following technical scheme: a finger joint tremor suppression device based on magnetorheological fluid comprises a signal collection unit, a signal processing device and a soft glove; the signal collecting unit is arranged on the outer side of a soft glove corresponding to each finger joint of a hand, the signal processing device is arranged on the outer side of the soft glove corresponding to the back of a palm, the soft glove comprises an outer layer of the soft glove and an inner layer of the soft glove, magnetic field generating devices are arranged at a gap between the outer layer of the soft glove and the inner layer of the soft glove, magnetorheological fluid is filled in a cavity between every two adjacent magnetic field generating devices, and a sealing port is formed in the inner side of the outer side of the soft glove corresponding to a wrist.

As a still further scheme of the invention: the signal collection unit is a sheet resistance strain type vibration sensor.

As a still further scheme of the invention: the signal collecting device comprises a signal processing unit and a micro power supply, and the signal processing unit is a PID controller.

As a still further scheme of the invention: the soft glove is of a double-layer hollow structure, and the two layers are made of skin-friendly soft materials and are tightly attached to the hand of a patient.

As a still further scheme of the invention: the magnetic field generating device is a circular coil and is arranged in the middle interlayer of the soft glove corresponding to each phalanx and finger joint of the finger.

As a still further scheme of the invention: the magnetorheological fluid is filled in the middle interlayer of the soft glove.

As a still further scheme of the invention: the signal collecting unit, the signal processing device and the magnetic field generating device are connected through a circuit.

As a still further scheme of the invention: the number and the specification of the signal collecting units and the magnetic field generating devices are not unique.

As a still further scheme of the invention: the sealing port is directly drilled in the soft glove and adopts an expansion ring blocking type sealing mode.

The invention has the beneficial effects that: the finger joint tremor suppression device based on the magnetorheological fluid is reasonable in design, and by measuring tremor signals of various finger joints and finger bones of a hand, the magnetic field generation devices at the corresponding finger joints are respectively controlled, so that different magnetic field strengths are generated to realize accurate tremor prevention control of the various finger joints, and the tremor prevention of fingers of a patient is realized in a targeted manner;

the magnetorheological fluid control is used for replacing the traditional mechanical equipment control, the integral structure is simplified, and the energy consumption is reduced;

the skin-friendly soft material with magnetism isolation is adopted, so that the magnetic field is prevented from being distributed outside the magnetorheological fluid area, the magnetic field intensity of fingers and phalanges is effectively improved, and the wearing comfort of a patient is improved.

Drawings

Fig. 1 is a schematic diagram of a finger joint tremor suppression device based on magnetorheological fluid;

FIG. 2 is a sectional view taken along the line A-A;

FIG. 3 is a sectional view taken at the position B-B;

fig. 4 is a schematic diagram of a signal acquisition unit.

In the figure: 1. the device comprises a signal collecting unit, 2, a signal processing device, 3, a soft glove, 4, a sealing opening, 5, a magnetic field generating device, 6, magnetorheological fluid 7, an outer layer and an inner layer of the soft glove, wherein the signal collecting unit is arranged on the outer layer of the soft glove, and the inner layer of the soft glove is arranged on the outer layer and the inner layer of the soft glove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a finger joint tremor suppression device based on magnetorheological fluid includes a signal collection unit 1, a signal processing device 2 and a soft glove 3; the signal collecting unit 1 is arranged on the outer side of the soft glove 3 corresponding to each finger joint of the hand, and 14 signal collecting units 1 are arranged, wherein 2 signal collecting units are arranged at the position of the thumb. The other four fingers are respectively provided with 3 fingers and used for detecting tremor signals of the hands, particularly the fingers of a patient, the signal processing device 2 is arranged on the outer side of the soft glove 3 corresponding to the back of the palm and used for processing the tremor signals sent by the signal collecting unit, sending current signals and providing power for the signal collecting unit, the signal processing unit and the magnetic field generating device 5, the soft glove 3 comprises an outer layer 7 and an inner layer 8 of the soft glove, a magnetic field generating device 5 is arranged at the gap between the outer layer 7 and the inner layer 8 of the soft glove, magnetorheological fluid 6 is filled in a cavity between two adjacent magnetic field generating devices 5, a sealing port 4 is arranged on the outer side of the soft glove 3 corresponding to the inner side of the wrist, the magnetic field generating devices 5 comprise 15 groups, wherein 1 group of phalanx of two sections of the thumb and 3 groups of the other fingers, the part of the metacarpal bone near the fingers is also provided with a coil which is wound on the whole metacarpal bone.

Further, in the embodiment of the present invention, the signal collecting unit 1 is a chip resistance strain gauge vibration sensor.

Further, in the embodiment of the present invention, the signal collecting device 2 includes a signal processing unit and a micro power supply, and the signal processing unit is a PID controller.

Furthermore, in the embodiment of the invention, the soft glove 3 is a double-layer hollow structure, two layers are both made of skin-friendly soft materials, the soft glove is tightly attached to the hand of a patient, a magnetic circuit is limited in the two layers of soft gloves, and the rheological effect of the magnetorheological fluid is enhanced, so that the soft glove has higher contractility and can better control the hand movement; the outer layer is looser and has better malleability to provide a hollow space and to increase malleability at the knuckle.

Further, in the embodiment of the present invention, the magnetic field generating device 5 is a circular coil, and the magnetic field generating device 5 is installed in the middle interlayer of the soft glove 3 corresponding to each phalanx and finger joint of the finger.

Further, in the embodiment of the present invention, the magnetorheological fluid 6 fills the middle interlayer of the soft glove 3.

Further, in the embodiment of the present invention, the signal collecting unit 1, the signal processing device 2, and the magnetic field generating device 5 are electrically connected.

Further, in the embodiment of the present invention, the number and the specification of the signal collecting unit 1 and the magnetic field generating device 5 are not unique.

Further, in the embodiment of the present invention, the sealing port 4 is directly provided with a hole in the soft glove 3, and the sealing port 4 adopts a piston ring blocking type sealing manner, and is used for replacing the magnetorheological fluid inside the soft glove.

The working principle is as follows: when the magnetorheological fluid-based finger joint tremor suppression device is used, the family members of the patient can help the patient to wear the magnetorheological fluid-based finger joint tremor suppression device and then turn on the power switch. Under the power off state or the patient hand non-tremor state, the magnetorheological fluid 6 in the soft glove 3 is in a Newtonian fluid state, the biomechanical characteristics of the soft glove 3 are the same as those of a normal soft glove, and normal bending and twisting of the hand and fingers cannot be influenced. When the hands of the patient are tremored, the signal collecting unit 1 sends the tremor signal to the signal collecting device 2 after detecting the tremor signal of the patient, and the signal collecting device 2 transmits the processed tremor signal to the magnetic field generating device 5 in a current signal mode, so that the viscosity and the shear stress of the magnetorheological fluid 6 in the soft gloves 3 are changed, and the biomechanical characteristics of the soft gloves 3 are further changed. The biomechanical characteristics of all parts of the soft glove 3 are different and are different along with the different tremor degrees of all finger joints of the hand of the patient, and the biomechanical characteristics can be changed in real time along with the change of the tremor degrees of the patient.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.