US 12,616,626 B2Granted

Motion assist device

AssigneeFrontAct Co., Ltd.

InventorsKazunari Hatazaki, Masahiro Kasuya, Tatsuya Seki

Life of this patent

Estimating the term…

Loading patent…

Abstract

This motion assist device 100 assists with flexing and extending of fingers F1, F2 of a user, the motion assist device 100 comprising: at least one arm 10; at least one connection member 20 configured so as to be capable of connecting the at least on arm 10 to each of the fingers F1, F2; an arm support mechanism 30 that turnably supports the at least one arm 10, the arm support mechanism 30 being configured so as to be mountable on the back Hb of the hand H of the user; an arm drive means 40 that causes the at least one arm 10 to turn; and a stopper 50 that extends from the arm support mechanism 30, the stopper 50 being configured so as to restrict movement of the proximal phalanges of the fingers of the user by being in contact with the proximal phalanges. The at least one arm 10 is configured so as to turn while the distance Dr between the at least one connection member 20 and the turning center Cr of the at least one arm 10 is kept fixed.

Claims19

Dependent claims

A motion assistive device for assisting bending/stretching of fingers of a user, comprising:

at least one arm;
at least one connective member configured to be able to connect the at least one arm to the respective fingers, the at least one connective member being rotatably attached to the at least one arm;
a base member that can be mounted on a back of a hand of the user;
at least one attachment member for pivotably supporting the at least one arm on the base member;
and
a motor and/or at least one wire for causing the at least one arm to pivot;
wherein the at least one arm is configured to pivot about a center of pivot while maintaining a constant distance between the at least one connective member and the center of pivot of the at least one arm;
wherein the at least one arm has a shape that is bent in a direction of enveloping a hand side;
wherein the base member and the at least one attachment member are configured so that the center of pivot of the at least one arm is disposed above an MP joint or towards a wrist side relative to the MP joint of the fingers;
and
wherein the at least one connective member is configured to connect the at least one arm between a DIP joint and a PIP joint, to a DIP joint, or to a portion distal to a DIP joint of the fingers.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/797,716Filed 22 Jan 2021
Priority: JP 2020-0188986 Feb 2020
Published: US 2023/0075880 A19 Mar 2023
Granted: 5 May 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

A61H 1/0288
Hand: fingers
B25J 11/00
Manipulators not otherwise provided for
B25J 13/087
By means of sensing devices, e.g. viewing or touching devices: for sensing other physical parameters, e.g. electrical or chemical properties
B25J 13/088
By means of sensing devices, e.g. viewing or touching devices: with position, velocity or acceleration sensors