Voice-activated, compact, and portable robotic system

Patent metadata

Field	Value
Publication number	US-12179356-B2
Application number	US-202017433367-A
Country	US
Kind code	B2
Filing date	Mar 4, 2020
Priority date	Mar 4, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

In a joint movement device ( 100 ) for selective flexion and extension of a joint ( 20 ), a tendon ( 120 ) is disposed adjacent to the first and second joint members. A tendon securing device ( 112 ) is secured to the second joint member ( 12 ), the tendon ( 120 ) being secured to the tendon securing device ( 112 ). At least one phalange ring ( 110 ) is secured to a joint member and includes a tending routing mechanism ( 113 ) configured to route the tendon through the phalange ring ( 110 ). An actuator ( 140 ) is coupled to the tendon ( 120 ) and pulls the tendon ( 120 ) inwardly to cause the joint ( 20 ) to flex. An elastic member ( 130 ) is coupled to the phalange ring ( 110 ) and tendon securing device ( 112 ) and applies an extension force thereto, thereby causing the joint ( 20 ) to extend when the actuator ( 140 ) releases the tendon ( 120 ).

First claim

What is claimed is:

1. A joint movement device for selective flexion and extension of a joint having a first joint member having a proximal end and an opposite distal end and a second joint member having a proximal end and an opposite distal end and the joint coupling the distal end of the first joint member to the proximal end of the second joint member so that the second joint member is in a flexural relationship to the first joint member, comprising:
(a) a tendon, having a first end and an opposite second end, disposed adjacent to a selected side of the first joint member and the second joint member;
(b) a tendon securing device secured to the distal end of the second joint member to which the tendon is secured;
(c) at least one phalange ring secured to the first joint member, the at least one phalange ring and the tendon securing device including a tending routing mechanism configured to route the tendon from the tendon securing device through the at least one phalange ring;
(d) an actuator in a fixed relationship with the first joint member and coupled to the tendon, the actuator configured to selectively pull the tendon inwardly thereto, thereby causing the joint to flex; and
(e) an elastic member coupled to both the phalange ring and the tendon securing device and not coupled to any actuator and configured to apply a constant extension force to the tendon securing device, thereby causing the joint to extend when the actuator releases the tendon.

2. The joint movement device of claim 1 , wherein the actuator comprises:
(a) a tendon shortening mechanism configured to shorten a portion of the first tendon between the phalange ring and the tendon securing device; and
(b) a controller configured to activate the tendon shortening mechanism.

3. The joint movement device of claim 2 , wherein the first end of the tendon is secured to the cap and wherein the tendon shortening mechanism comprises:
(a) a housing;
(b) an electric motor coupled to the housing;
(c) a threaded member coupled to the motor so as to be rotatable thereby, the threaded member including a continuous spiral root having a pitch corresponding to a diameter of the tendon;
(d) a nut in threaded relationship with the threaded member, the nut held by the housing so that when the motor rotates the threaded member, the nut moves laterally along the threaded member, the nut defining a passage through which the tendon passes,
wherein the second end of the tendon is secured to the threaded member so that when the threaded member rotates in a first direction, the tendon is pulled into the housing and wrapped around the continuous spiral root and so that when the threaded member rotates in a second direction, opposite the first direction, the tendon is unwrapped from the continuous spiral root and released from the housing.

4. The joint movement device of claim 2 , wherein the tendon shortening mechanism comprises an electric motor including a rotor to which both the first end of the tendon and the second end of the tendon are affixed, wherein the tendon is routed through the phalange ring and the tendon securing device so that when the motor rotates in a first direction, a first portion of the tendon and a second portion of the tendon twist about each other so as to cause shortening of a third portion of the tendon disposed between the phalange ring and the tendon securing device and a fourth portion of the tendon disposed between the first phalange ring and the tendon securing device.

5. The joint movement device of claim 1 , wherein the elastic member comprises a nickel titanium alloy wire.

6. The joint movement device of claim 1 , wherein the tending routing mechanism of each phalange ring includes a passage defined through which the tendon passes that is lined with a poly(tetrafluoroethylene) liner so as to reduce friction on the tendon.

7. The joint movement device of claim 1 , wherein the elastic member comprises a spring having one end in a fixed relationship with the first joint and a second end coupled to a cord that is coupled to the cap and that is disposed on a side of the joint opposite from the tendon.

8. An exoskeleton system configured for use with a plurality of different fingers of a hand comprising a plurality of joint movement devices as recited in claim 1 , wherein each of the plurality of joint movement devices is secured to a different corresponding finger of the hand, so that each joint movement device is configured to cause the corresponding finger to move in a predetermined manner.

9. The exoskeleton system of claim 8 , further comprising a controller that is in control communication with each actuator, wherein the controller is configured to respond to a plurality of different voice commands regarding flexion and extension of the joint.

10. The exoskeleton system of claim 9 , wherein each of the plurality of voice commands corresponds to a different predetermined movement pattern for the fingers.

11. The exoskeleton system of claim 10 , wherein the different predetermined movement patterns include: gripping an object, pinching the object, grasping the object and releasing the object.

12. The exoskeleton system of claim 9 , wherein the controller includes a chipset that is in communication with a digital device.

13. The exoskeleton system of claim 12 , wherein the digital device is a selected one of: a mobile telephone, a tablet, a dedicated device, a desktop computer and a laptop computer.

14. A robotic exoskeleton configured for use with a plurality of different fingers of a hand, having a palm, each finger having at least one joint including a first joint member having a proximal end and an opposite distal end and a second joint member having a proximal end and an opposite distal end wherein the second joint member is in a flexural relationship to the first joint member, the robotic exoskeleton comprising:
(a) a plurality of joint movement devices, wherein each of the plurality of joint movement devices is secured to a different corresponding finger of the hand, so that each joint movement device is configured to cause the corresponding finger to move in a predetermined manner, each of the plurality of joint movement devices including:
(i) a first tendon, having a first end and an opposite second end, disposed adjacent to a selected side of the first joint member and the second joint member;
(ii) a tendon securing device secured to the distal end of the second joint member to which the tendon is secured;
(iii) a first phalange ring secured to the first joint member and a second phalange ring secured to the second joint member, the first phalange ring, the second phalange ring, and the tendon securing device including a tending routing mechanism configured to route the tendon from the tendon securing device through the first phalange ring and the second phalange ring;
(iv) an actuator in a fixed relationship with the first joint member and coupled to the tendon, the actuator configured to selectively pull the tendon inwardly thereto, thereby causing the joint to flex, the actuator including a tendon shortening mechanism configured to shorten a portion of the first tendon between the first phalange ring and the tendon securing device;
(v) an elastic member coupled to both the first phalange ring and the second phalange ring and not coupled to any actuator and configured to apply a constant extension force to the second phalange ring, thereby causing the joint to extend when the actuator releases the tendon; and
(vi) a controller in control communication with each actuator and configured to respond to a plurality of different voice commands regard

Assignees

• Georgia Tech Res Inst

Inventors

• Desai Jaydev P
• Jeong Seokhwan
• Tran Phillip
• Wang Xuefeng

Classifications

• B25J15/0683

  Details of suction cup structure, e.g. grooves or ridges · CPC title

• B25J13/003

  by means of an audio-responsive input (audible safety signals B25J19/061) · CPC title

• B25J9/1633

  compliant, force, torque control, e.g. combined with position control · CPC title

• B25J9/1612

  characterised by the hand, wrist, grip control · CPC title

• B25J9/1075

  with muscles or tendons · CPC title