阅读说明：本技术 一种上肢支撑装置 (Upper limb supporting device ) 是由 王多琎 李玟卓 王倩 于 2020-04-09 设计创作，主要内容包括：本发明属于医疗器械领域,提供了一种上肢支撑装置,包括驱动单元、传动单元、支撑单元及控制单元,传动单元包括滚珠丝杠和螺母,支撑单元包括套筒、上臂支撑件及前臂支撑件,螺母套设在滚珠丝杠上,套筒套在螺母上,上臂支撑件与套筒活动连接,而前臂支撑件与上臂支撑件相连接。通过滚珠丝杠与螺母的配合,改变力矩的传递方向,将驱动单元的力矩转变成直线运动,从而使得上臂支撑件沿滚珠丝杠的长度方向直线运动。同时,上臂支撑件能够围绕滚珠丝杠的轴线旋转形成旋转副。本发明通过驱动单元提供助力,使得使用者能够方便地升高或降低患臂的高度,实现上肢的上下移动与摆动,扩大了手臂的活动范围,能够方便地完成一些简单的日常操作。(The invention belongs to the field of medical instruments, and provides an upper limb supporting device which comprises a driving unit, a transmission unit, a supporting unit and a control unit, wherein the transmission unit comprises a ball screw and a nut, the supporting unit comprises a sleeve, an upper arm supporting piece and a forearm supporting piece, the nut is sleeved on the ball screw, the sleeve is sleeved on the nut, the upper arm supporting piece is movably connected with the sleeve, and the forearm supporting piece is connected with the upper arm supporting piece. Through the cooperation of ball and nut, change the transmission direction of moment, change drive unit's moment into linear motion to make upper arm support spare along the length direction linear motion of ball. Meanwhile, the upper arm support can rotate around the axis of the ball screw to form a rotating pair. The invention provides assistance through the driving unit, so that a user can conveniently raise or lower the height of the affected arm, the up-and-down movement and swing of the upper limb are realized, the moving range of the arm is expanded, and some simple daily operations can be conveniently completed.)

1. An upper limb support device, comprising:

A driving unit, a transmission unit, a supporting unit and a control unit,

Wherein the driving unit provides power to the transmission unit, the transmission unit transmits the power to the supporting unit,

The transmission unit includes: a ball screw and a nut, wherein,

The ball screw receives the power, the nut is sleeved on the ball screw and matched with the ball screw, and moves along the length direction of the ball screw along with the rolling of the ball screw,

The supporting unit includes: a sleeve, an upper arm supporting piece and a forearm supporting piece,

The sleeve is fixedly connected with the nut and moves synchronously,

The upper arm supporting piece is used for placing an upper arm of a human body and is movably connected with the sleeve, the upper arm supporting piece is driven by the sleeve to move along the length direction of the ball screw, and can rotate around the axis of the ball screw,

The forearm support part is connected with the upper arm support part and is used for placing the forearm of a human body,

The control unit is used for controlling the operation of the driving unit.

2. The upper extremity supporting device of claim 1, wherein:

Wherein the driving unit is a motor,

The transmission unit further includes: a first conical gear set, a speed reducer and a second conical gear set,

The motor is connected with the speed reducer through the first conical gear set, and the speed reducer is connected with the ball screw through the second conical gear set so that the power is transmitted to the ball screw.

3. The upper extremity supporting apparatus according to claim 1, further comprising:

A base and a main shaft, wherein the main shaft is provided with a main shaft,

Wherein the main shaft is vertically arranged on the base,

The bottom end of the main shaft is provided with a cylindrical ball bearing, the main shaft is provided with two vertical openings which are oppositely arranged and used for the sleeve to move along the length direction of the ball screw,

The ball screw is arranged in the main shaft, the bottom end of the ball screw is connected with a cylindrical ball bearing,

The upper arm supporting piece is movably connected with the sleeve through a bolt, and the bolt is fixedly connected with the upper arm supporting piece and movably connected with the sleeve.

4. The upper extremity supporting device of claim 3, wherein:

Wherein the sleeve comprises a sleeve main body and two sleeve ears, the sleeve main body is sleeved on the nut, the two sleeve ears are respectively arranged at two sides of the sleeve main body and extend outwards along the radial direction of the sleeve main body to form the corresponding vertical openings,

And the sleeve lug is provided with a bolt hole matched with the bolt.

5. The upper extremity supporting device of claim 3, wherein:

Wherein the forearm support piece comprises a forearm support and a forearm support,

The forearm support with upper arm support piece is connected, the forearm support is worn to establish on the forearm support.

6. The upper extremity supporting device of claim 5, wherein:

Wherein the forearm support and the upper arm support are made of aluminum alloy materials,

The forearm support is made of flexible materials, and the flexible materials are made of nylon materials.

7. The upper extremity supporting device of claim 3, wherein:

Wherein the control unit comprises a control switch and a controller,

The control switch is used for inputting instructions to the controller, and the controller is used for receiving the instructions of the control switch so as to control the nut to ascend or descend.

8. The upper extremity support apparatus of claim 7, wherein:

Wherein the control switch comprises an ascending switch and a descending switch,

The ascending switch is used for controlling the ascending of the nut, and the descending switch is used for controlling the descending of the nut.

9. The upper extremity supporting device of claim 1, wherein:

The ball screw and the nut have a self-locking function, and the nut can be fixed at a certain position on the ball screw.

10. The upper extremity supporting apparatus according to claim 1, further comprising:

A battery pack having a plurality of batteries,

Wherein the battery is used for providing electric energy for the driving unit.

Technical Field

The invention belongs to the field of medical equipment, and particularly relates to an upper limb supporting device.

Background

China has already advanced the aging stage of the population, pays attention to the health problem of the elderly, and recovers various functional disorders caused by disabilities or diseases. Where patients with neuromuscular diseases often have difficulty lifting their arms against gravity, which poses significant challenges to their daily lives, such as stroke, spinal cord injury, muscular dystrophy, and the like. Stroke, commonly known as stroke, is an acute cerebrovascular disease and has the characteristics of high morbidity, high mortality and high disability rate. The cerebral apoplexy causes the damage of the motor center of the cerebral hemisphere cortex to cause hemiplegia, which is the most common sequela of cerebral apoplexy and seriously threatens the health of middle-aged and old people. Infantile cerebral palsy refers to a syndrome mainly caused by various motor dysfunctions in postures due to non-progressive brain injury in the immature brain stage within 1 month of birth of a child patient, and is more common in spastic hemiplegia. For the patients mentioned above, since their shoulder and upper arm muscles decline rapidly, this directly results in insufficient muscle strength of the patient's upper limbs, and the whole upper limbs cannot be controlled to support them to perform their movements, but their forearms, wrists and fingers maintain sufficient sensitivity and residual strength. In this case, if the elbow of the patient can have a sufficient supporting force to support their affected arm, the affected arm of the patient can still perform normal activities. Therefore, they need a device which can support and lift the affected arm, and can better complete some simple daily operations, greatly enhance the ability of the patients in daily life, thereby reducing the burden of families and improving the quality of life of the patients. Many scientific institutions have focused their emphasis on the field of upper limb rehabilitation. For patients with upper limb motor dysfunction due to muscle weakness of the upper limb, the patients need to take a wheelchair in the early stage of rehabilitation or to return to home after completing treatment. Therefore, the wheelchair is used as a platform to provide a reliable upper limb supporting device, and the wheelchair has certain research significance in the purposes of facilitating daily life self-care of patients, reducing family burden of the patients, saving social medical care resources and the like. However, in view of the existing research data, research on the upper limb support device placed on the wheelchair platform and used by the user in daily life still belongs to a few, so that it is necessary to design an upper limb support device based on the wheelchair platform for people with upper limb motor dysfunction and myasthenia caused by stroke, multiple congenital arthritis, muscular dystrophy, spinal cord injury, cerebral palsy, and the like.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide an upper limb support device that solves the problem of the persons who cannot perform normal daily life due to upper limb motor dysfunction caused by weakness of upper limb muscles.

The present invention provides an upper limb support device having the features comprising: drive unit, transmission unit, supporting unit and the control unit, wherein, drive unit provides power for transmission unit, and transmission unit transmits power to supporting unit, and transmission unit includes: ball and nut, ball receive power, and the nut cover is established on ball and is cooperateed with ball, along with ball's roll along ball's length direction removal, and the supporting element includes: sleeve, upper arm support piece and forearm support piece, sleeve and nut fixed connection and synchronous movement, upper arm support piece be used for placing human upper arm and with sleeve swing joint, move along ball's length direction under telescopic drive, and upper arm support piece can rotate around ball's axis, forearm support piece is connected with upper arm support piece for place human forearm, the control unit is used for controlling drive unit's operation.

The upper limb support device provided by the invention can also have the following characteristics: wherein, drive unit is the motor, and the transmission unit includes: first conical gear set, reduction gear and second conical gear set, motor and reduction gear pass through first conical gear set and are connected, thereby the reduction gear passes through the second conical gear set with ball and is connected power transmission for ball.

The upper limb support device according to the present invention may further include: base and main shaft, wherein, the vertical setting of main shaft is on the base, and the bottom of main shaft is provided with cylinder ball bearing, and it has the vertical opening of two relative settings to open on the main shaft for the sleeve removes along ball screw's length direction, and ball screw sets up in the main shaft, and the bottom is connected with cylinder ball bearing, and upper arm support piece passes through bolt and sleeve swing joint, bolt and upper arm support piece fixed connection, with sleeve swing joint.

The upper limb support device provided by the invention can also have the following characteristics: wherein, the sleeve includes sleeve main part and two sleeve ears, and sleeve main part cover is on the nut, and two sleeve ears set up respectively in the both sides of sleeve main part and radially outwards extend corresponding vertical opening along the sleeve main part, are equipped with the bolt hole with bolt matched with on the sleeve ear.

The upper limb support device provided by the invention can also have the following characteristics: wherein, the forearm support piece comprises a forearm support and a forearm support, the forearm support is connected with the upper arm support piece, and the forearm support is arranged on the forearm support in a penetrating way.

The upper limb support device provided by the invention can also have the following characteristics: wherein, forearm support and upper arm support piece all adopt aluminum alloy material, and the forearm holds in the palm and adopts flexible material, and flexible material is the nylon materials.

The upper limb support device provided by the invention can also have the following characteristics: the control unit comprises a control switch and a controller, the control switch is used for inputting instructions to the controller, and the controller is used for receiving the instructions of the control switch so as to control the nut to ascend or descend.

The upper limb support device provided by the invention can also have the following characteristics: the control switch comprises an ascending switch and a descending switch, the ascending switch is used for controlling the ascending of the nut, and the descending switch is used for controlling the descending of the nut.

The upper limb support device provided by the invention can also have the following characteristics: the ball screw and the nut have a self-locking function, and the nut can be fixed at a certain position on the ball screw.

The upper limb support device according to the present invention may further include: a battery, wherein the battery is used for providing electric energy for the driving unit.

Action and Effect of the invention

The upper limb supporting device provided by the invention is provided with a driving unit, a transmission unit, a supporting unit and a control unit, wherein the transmission unit comprises a ball screw and a nut, the supporting unit comprises a sleeve, an upper arm supporting piece and a forearm supporting piece, the nut is sleeved on the ball screw, the sleeve is sleeved on the nut, the upper arm supporting piece is movably connected with the sleeve, and the forearm supporting piece is connected with the upper arm supporting piece. The driving unit provides power, the ball screw receives the power, and along with the rolling of the ball screw, the nut advances or retreats along the length direction of the ball screw to drive the sleeve to synchronously move, so that the upper arm supporting piece and the forearm supporting piece are driven to synchronously move. Through the cooperation of ball and nut, change the transmission direction of moment, change drive unit's moment into linear motion to make upper arm support spare along the length direction linear motion of ball. Meanwhile, the upper arm support can rotate around the axis of the ball screw to form a rotating pair. Therefore, the upper arm support piece drives the forearm support piece connected with the upper arm support piece to move linearly along the axis direction of the ball screw and rotate in a plane vertical to the axis of the ball screw, so that the upper limb can move up and down and swing, and the moving range of the arm of a user is expanded. In addition, the upper arm supporting piece is movably connected with the sleeve, and the upper arm supporting piece can be exchanged left and right or additionally arranged on two sides according to the requirements of patients.

Therefore, the present invention provides additional assistance through the driving unit so that the user can conveniently raise or lower the height of the affected arm through the control unit to conveniently accomplish some simple daily operations.

Drawings

Fig. 1 is a schematic structural view of an upper limb support device in an embodiment of the invention;

Fig. 2 is a schematic structural view of a support unit of the upper limb support apparatus in the embodiment of the invention;

Fig. 3 is a schematic structural view of a driving unit and a transmission unit of the upper limb supporting device in the embodiment of the invention;

Fig. 4 is a side view of the support unit, the drive unit and the transmission unit of the upper limb support device in an embodiment of the present invention; and

Figure 5 is a wheelchair-mounted schematic view of an upper limb support apparatus in an embodiment of the invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the upper limb supporting device of the invention is specifically described below with reference to the embodiment and the accompanying drawings.

< example >

The present embodiment specifically describes the structure of the upper limb support device 100.

Fig. 1 is a schematic structural view of an upper limb support device in an embodiment of the present invention, fig. 2 is a schematic structural view of a support unit of the upper limb support device in the embodiment of the present invention, fig. 3 is a schematic structural view of a drive unit and a transmission unit of the upper limb support device in the embodiment of the present invention, and fig. 4 is a side view of the support unit, the drive unit, and the transmission unit of the upper limb support device in the embodiment of the present invention.

As shown in fig. 1 to 4, the upper limb support device 100 is used for being mounted on a wheelchair, and includes a base 10, a main shaft 20, a drive unit 30, a transmission unit 40, a support unit 50, a control unit 60, and a battery 70.

The base 10 is used to mount the entire device on a wheelchair and has a base frame 11, a first fixed joint 12 and a base plate 13.

The base frame 11 is horizontally placed under the seat of the wheelchair, and the first fixed joint 12 is fixedly installed at the side of the base frame 11 to cooperate with the wheelchair to fix the upper limb support device to the wheelchair. The base plate 13 is installed on the upper surface of the base frame 11 for installing the main shaft 20.

The main shaft 20 is a cylindrical tube having a hollow in the middle, and is vertically installed on the base plate 13. The main shaft 20 is oppositely provided with two vertical openings 21 with the same structure.

The driving unit 30 is a dc motor and is fixed to the base frame 11 by a hexagon head bolt.

The side of the dc motor is provided with a second fixed joint 31 which is matched with the wheelchair to fix the upper limb support device on the wheelchair.

The transmission unit 40 includes a first conical gear set 41, a speed reducer 42, a second conical gear set 43, a ball screw 44, a cylindrical ball bearing 45, and a nut 46.

The first conical gear set 41 is connected to a dc motor. The speed reducer 42 is mounted on the base plate 13 by a hexagon bolt and a hexagon nut, and has a first conical gear set 41 mounted at one end thereof and a second conical gear set 43 mounted at the other end thereof. The second conical gear set 43 is connected to the ball screw 44.

The ball screw 44 is disposed in the main shaft 20, and the bottom end is connected to a cylindrical ball bearing 45. A cylindrical ball bearing 45 is mounted on the base plate 13 at the bottom end of the main shaft 20. The ball screw 44 rolls in a cylindrical ball bearing 45.

The nut 46 is fitted over the ball screw 44, matches with the ball screw 44, and moves up and down along the length direction of the ball screw 44 with the rotation of the ball screw 44, thereby completing the ascending or descending. The ball screw 44 and the nut 46 have a self-locking function, i.e., the nut 46 can be fixed at a certain position on the ball screw 44 without slipping down.

The first bevel gear set 41 is driven by the dc motor to rotate, and transmits power to the reduction gear 42. The power is transmitted to the second conical gear set 43 after being reduced by the reducer 42, and then transmitted to the ball screw 44 to rotate the ball screw 44, so that the nut 46 moves up and down in the longitudinal direction of the ball screw 44 according to the rotation of the ball screw 44, thereby completing the ascending or descending.

The dc motor changes the direction of torque transmission by the first bevel gear set 41, and then transmits the driving torque to the ball screw 44 in the spindle 20 through the reduction gear 42, and the rotational motion of the gear of the dc motor is converted into the linear motion of the nut 46 by the screw-nut mechanism.

The support unit 50 includes a sleeve 51, a pin 52, an upper arm support 53, a forearm support 54, a metal link 55 and a metal disc joint 56.

The sleeve 51 is sleeved on the nut 46 and fixedly connected with the nut 46, so that the sleeve can move synchronously with the movement of the nut 46.

The sleeve 51 includes an integrally formed sleeve body 511 and two sleeve ears 512. The sleeve body 511 is fitted over the nut 46, and two sleeve ears 512 are respectively disposed on both sides of the sleeve body 511 and extend outward in the radial direction of the sleeve body 511 out of the vertical opening 21. The two sleeve ears 512 are also respectively provided with a bolt hole for inserting the bolt 52 therein. The sleeve body 511 moves up and down along the ball screw 44 with the movement of the nut 46, and drives the sleeve ears 512 to move up and down in the vertical opening 22.

The upper arm support 53 is used for placing the upper arm of the human body and is provided with a through hole. The bolt 52 passes through the through hole and the bolt hole on the sleeve lug 512, and the bolt 52 and the ball screw 44 are parallel to each other. The upper arm support 53 is movably connected with the sleeve 51 by a bolt 52. The upper arm support 53 is fixedly connected to the latch 52.

The latch 52 is able to rotate about its own axis within the latch hole and thus is able to rotate the upper arm support 53 in a horizontal plane. The latch 52 and the upper arm support 53 form a rotation pair, and the movement of the upper arm support 53 in the horizontal plane is enabled, thereby enabling the swing of the upper limb placed thereon. Meanwhile, since the latch 52 cannot move up and down in the latch hole, the upper arm support 53 is moved along the length direction of the ball screw 44 by the sleeve ears 512, i.e., is raised or lowered in the vertical direction along with the movement of the sleeve 51.

The forearm support 54 is used for placing the forearm of the human body and is connected to the upper arm support 53 via a metal link 55 and a metal disc joint 56.

One end of the metal connecting rod 55 is movably connected with the upper arm support 53 through a rotating shaft, and the other end is fixedly connected with the metal disc joint 56. Since the rotation axis is perpendicular to the upper arm support 53, the height of the metal link 55 from the ground is greater than the height of the upper arm support 53. And since the rotating shaft can rotate about its own axis in a horizontal plane, the metal link 55 can also rotate in the horizontal plane. Therefore, the metal link 55 increases the range of motion of the arm in the horizontal direction and the vertical direction.

A plurality of threaded holes are uniformly distributed on the edge of the metal disc joint 56 for screws to pass through so as to be fixedly connected with the other end of the metal connecting rod 55. The joint of the metal link 55 and the metal disc joint 56 can be changed in the vertical swing angle of the forearm support 54 by loosening the screw to change the fulcrum position and then tightening the screw to fix the position. The metal disc knuckle 56 is also provided with mounting slots.

Forearm support 54 includes forearm support 541, forearm support 542 and nylon band 543.

The forearm support 541 is a U-shaped frame parallel to the ground. The straight line section of the U-shaped frame passes through the mounting groove on the metal disc joint 56 to realize the fixed connection of the forearm support 541 and the metal disc joint 56.

The forearm support 542 is a rectangular cloth piece made of a flexible material, opposite sides of which are respectively penetrated on the forearm support 541 and fixed, and naturally drooped to form a semicircular shape or a U shape, so that the forearm of a human body can be conveniently placed.

One end of the nylon binding band 543 is fixed to a straight line segment at one side of the forearm support 541, and the other end has a hook and loop fastener. When the forearm is put into the forearm support 542, the nylon band 543 is passed around the forearm, and the end with the hook-and-loop fastener is fitted with the hook-and-loop fastener provided on the back of the forearm support 542 to fix the forearm.

In the embodiment of the present invention, the upper arm supporting member 53 and the forearm support 541 are made of aluminum alloy with high strength and low density, and the forearm support 542 and the nylon band 543 are made of nylon material.

The control unit 60 is used for controlling the operation of the direct current electrolysis, and comprises a controller 61 and a control switch 62.

The controller 61 is installed at one side of the dc motor, and the control switch 62 is connected to the controller 61 through a wire. The length of the wire can be set as required, so that the control switch 62 can be placed at the hand of a user, and the control is convenient.

The control switch 62 inputs a command to the controller 61, and the controller 61 controls the raising or lowering of the nut 46 by receiving the command from the control switch 62.

Controller 61 is model ZM-6405E. The control switch 62 includes an up switch 621 and a down switch 622.

When the user presses the lifting switch 621, the nut 46 is lifted to drive the upper arm support 53 to move upward to help the user lift the arm; pressing the raising switch 621 again stops the movement of the nut 46, and the upper arm support 53 stops raising and stays there in synchronization. When the user presses the down switch 622, the nut 46 is lifted down to drive the upper arm support 53 to move downward to help the user slowly lower his arm; pressing the down switch 622 again stops the movement of the nut 46, and the upper arm support 53 stops its lowering and stays there.

Figure 5 is a wheelchair-mounted schematic view of an upper limb support apparatus in an embodiment of the invention.

As shown in fig. 5, the upper limb support device 100 further includes a battery 70 for supplying electric power to the dc motor.

When the upper limb supporting device 100 is installed on a common wheelchair, an additional battery 70 is required to be additionally installed to supply power to the direct current motor; if the electric wheelchair is mounted on the vehicle, the direct current motor can be directly connected with the battery of the electric wheelchair.

In the present embodiment, the upper limb support apparatus 100 is mounted on a wheelchair. In practical application, the device can be installed at a required place, such as a sickbed edge.