Medical apparatus for standing aid

Patent metadata

Field	Value
Publication number	US-10085906-B2
Application number	US-201715627256-A
Country	US
Kind code	B2
Filing date	Jun 19, 2017
Priority date	Jun 21, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A medical apparatus for standing aid comprising a backrest ( 4 ) that has at least one side thereof provided with a crank rocker mechanism that comprises a crank mechanism ( 1 ), a triangular linkage mechanism ( 2 ), and a rocker mechanism ( 3 ), the crank mechanism ( 1 ) being rotatably connected to the triangular linkage mechanism ( 2 ) such that an included angle between a second driven link (BE) of the triangular linkage mechanism ( 2 ) and the crank mechanism ( 1 ) is always smaller than 90°, and the crank mechanism ( 1 ) driving the triangular linkage mechanism ( 2 ), the rocker mechanism ( 3 ) and the backrest ( 4 ) connected to the triangular linkage mechanism ( 2 ) to perform interactive movement repeatedly along a predetermined curve trajectory in response to a driving force coming from a drive effect of a driving unit ( 100 ), so that the backrest ( 4 ) connected to the second driven link (BE) assists a trainee in standing up repeatedly by obliquely supporting the trainee's waist.

First claim

What is claimed is:

1. A medical apparatus for standing aid, comprising a crank rocker mechanism provided on at least one side of a backrest ( 4 ), a motor ( 7 ), a primary chain drive mechanism ( 8 ), and a secondary chain drive mechanism ( 10 ), wherein the crank rocker mechanism supports a trainee's body to perform sitting and rising movements, the backrest ( 4 ) provides the trainee with back support, the crank rocker mechanism comprising a crank mechanism ( 1 ), a triangular-shaped link age mechanism ( 2 ), and a rocker mechanism ( 3 ); where in a training process, the motor ( 7 ) rotates forward to drive the primary chain drive mechanism ( 8 ), the primary chain drive mechanism 8 ) drives the secondary chain drive mechanism ( 10 ), the secondary chain drive mechanism ( 10 ) drives the crank mechanisms ( 1 ) to rotate at a reduced speed, the triangular-shaped linkage mechanism ( 2 ) is then driven by the crank mechanisms ( 1 ) to correspondingly rotate, and the rocker mechanisms ( 3 ) follows the movement of the triangular-shaped linkage mechanism ( 2 ) to rotate, such that the backrest ( 4 ) is driven by the triangular-shaped linkage mechanism ( 2 ) to move upwardly and the trainee stands up progressively with assistance from the backrest ( 4 ); after the trainee reaches a standard standing posture, the motor ( 7 ) starts to rotate in reverse, the crank mechanism ( 1 ) rotates downwardly slowly driven by the first chain drive mechanism ( 8 ) and the second drive chain mechanism ( 10 ), the triangular-shaped linkage mechanism ( 2 ) moves correspondingly to drive the backrest ( 4 ) to move downwardly, such that with assistance from the backrest ( 4 ), the trainee returns to a sitting posture from a standing posture progressively:
the crank mechanism ( 1 ) being rotatably connected to the triangular-shaped linkage mechanism ( 2 ) such that an angle between a second driven link (BE) of the triangular-shaped linkage mechanism ( 2 ) and the crank mechanism ( 1 ) is always smaller than 90° , and the crank mechanism ( 1 ) driving the triangular-shaped linkage mechanism ( 2 ), the rocker mechanism ( 3 ) and the backrest ( 4 ) connected to the triangular-shaped linkage mechanism ( 2 ) to perform interactive movement repeatedly along a predetermined curved trajectory in response to a drive effect resulting from a driving force of a driving unit ( 100 ), so that the backrest ( 4 ) connected to the second driven link (BE) assists the trainee in standing up repeatedly by obliquely supporting the trainee's waist.

2. The medical apparatus of claim 1 , wherein the triangular-shaped linkage mechanism ( 2 ) is of an acute triangular structure composed of a first driven link (BC), a second driven link (BE), and a third driven link (CE),
wherein the first driven link (BC) and the second driven link (BE) form an angle of 40°, the first driven link (BC) and the third driven link (CE) form an angle of 60°, the second driven link (BE) and the third driven link (CE) form an angle of 80°, and the triangular-shaped linkage mechanism ( 2 ) has an apex (E) that is connected to the backrest ( 4 ) and guides the trainee's shoulder fastened to the backrest ( 4 ) to perform to-and-fro movement along a predetermined curved trajectory.

3. The medical apparatus of claim 2 , wherein in the crank rocker mechanism, the length of the first driven link (BC) is greater than the length of the second driven link (BE), the length of the second driven link (BE) is greater than the length of the rocker mechanism ( 3 ), the length of the rocker mechanism ( 3 ) is greater than the length of the third driven link (CE), and the length of the third driven link (CE) is greater than the length of the crank mechanism ( 1 ),
the crank mechanism ( 1 ), the triangular-shaped linkage mechanism ( 2 ), and the rocker mechanism ( 3 ) being vertically linked so as to drive the backrest ( 4 ) to move, and the crank rocker mechanism modulating the curved trajectory of the backrest ( 4 ) according to a drive frequency of the driving unit ( 100 ) and a rotation angle of the motor.

4. The medical apparatus of claim 3 , wherein in the triangular-shaped linkage mechanism ( 2 ), the first driven link (BC) has one end thereof rigidly connected to the second driven link (BE), and has an opposite end thereof rigidly connected to the third driven link (CE), while the second driven link (BE) is rigidly connected to the third driven link (CE).

5. The medical apparatus of claim 3 , wherein the triangular-shaped linkage mechanism ( 2 ) is articulated to the crank mechanism ( 1 ) at a rigid joint between the first driven link (BC) and the second driven link (BE), and the triangular-shaped linkage mechanism ( 2 ) is articulated to the rocker mechanism ( 3 ) at a rigid joint between the first driven link (BC) and the third driven link (CE).

6. The medical apparatus of claim 2 , wherein the backrest ( 4 ) is parallel to and rigidly connected to the second driven link (BE), and two connecting points between the backrest ( 4 ) and the second driven link (BE) are located within one half of the second driven link (BE) that is relatively close to the apex (E).

7. The medical apparatus of claim 6 , wherein the backrest ( 4 ) is equipped with shoulder straps at two sides thereof for providing a pulling force to the trainee's shoulders during operation of the crank rocker mechanism, and the backrest ( 4 ) is equipped with a waist band at a bottom end thereof for providing a pulling force to the trainee's waist.

8. The medical apparatus of claim 1 , wherein in the crank rocker mechanism, the crank mechanism ( 1 ) is further connected to an intermediate axle ( 18 ) so that the crank mechanism ( 1 ) receives kinetic energy provided by the motor ( 7 ) through the intermediate axle ( 18 ),
wherein the crank mechanism ( 1 ) drives the crank rocker mechanism to operate by taking its connecting point with the intermediate axle ( 18 ) as a center of circle and taking a length of the crank mechanism ( 1 ) as the radius, and
wherein the crank mechanism ( 1 ) is rotatable clockwise or anticlockwise about the intermediate axle ( 18 ) when driven by the intermediate axle ( 18 ), thereby driving the entire crank rocker mechanism to move upward or downward.

9. The medical apparatus of claim 1 , wherein the medical apparatus for standing aid works with a data processing cloud terminal to for smart data processing, wherein the smart data processing involves:
recommending a rehabilitation training program with reference to an expert knowledge library in the cloud terminal;
performing real-time adjustment on the rehabilitation training program according to the trainee's rehabilitation progress; and
performing personalized update on a sitting-rising training by using machine learning.

10. A medical apparatus for standing aid, comprising: a driving unit ( 100 ), a linkage unit ( 200 ), a seat unit ( 300 ), a data harvesting unit ( 400 ), and a motion-assessing unit ( 500 ) installed on a frame ( 5 ), wherein
the linkage unit ( 200 ) assists a trainee sitting on the seat unit ( 300 ) in sitting and rising movements in the form of interaction between a crank and a rocker driven by the driving unit ( 100 ), and the motion-assessing unit ( 500 ) assesses the trainee's physical condition according to the trainee's exercise data collected by the data harvesting unit ( 400 ) and performs real-time adjustment on the trainee's training frequency and training duration, and wherein the linkage unit ( 200 ) comprises at least one crank rocker mechanism that includes a triangular-shaped linkage mechanism ( 2 ) that assists the trainee's shoulders to perform the sitting and rising movements.

11. The medical apparatus of clai

Assignees

• Univ Hefei Technology

Inventors

• Zhao Ping
• Yang Jiaoyun
• Zhu Lihong
• Zhang Liang
• An Ning
• Zhang Ping
• Wang Aiguo
• Jin Liuqi
• Que Xia

Classifications

• A61H2230/425

  used as a control parameter for the apparatus · CPC title

• A61H3/008

  using suspension devices for supporting the body in an upright walking or standing position, e.g. harnesses · CPC title

• A61H3/00

  Appliances for aiding patients or disabled persons to walk about (apparatus for helping babies to walk A47D13/04 {; applying electrical currents by contact electrodes for stimulating motor muscles, e.g. walking assistance A61N1/36003}) · CPC title

• A61H1/0274

  for the upper limbs · CPC title

• A61H1/0281

  Shoulder · CPC title