Abstract

A prosthesis comprising: a first set of electrically powered components, the first set of electrically powered components comprising a plurality of motors; and control circuitry. The control circuitry is configured to receive control signals for the motors and constrain the control signals based on two different current constraints. The current constraints are a motor current constraint that constrains the current based on a limit for that motor and an aggregate current constraint that constrains the current drawn by the first set of components in aggregate.

IPC Classes  ?

• H02P 21/22 - Current control, e.g. using a current control loop
• A61F 2/54 - Artificial arms or hands or parts thereof
• A61F 2/58 - ElbowsWrists
• A61F 2/60 - Artificial legs or feet or parts thereof
• A61F 2/70 - Operating or control means electrical
• H02P 5/46 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
• H02P 23/10 - Controlling by adding a DC current
• H02P 29/40 - Regulating or controlling the amount of current drawn or delivered by the motor for controlling the mechanical load

Abstract

An automated hand having an arrangement for mounting a digit connector such that the connector can rotate when a force is applied to a digit. The arrangement can include a rigid mount and a resiliently deformable sleeve, with the connector within the sleeve. The automated hand can be compatible with a touchscreen. The automated hand can have a worm drive for rotating a digit, the worm drive including a bearing configured to resist axial loads in both directions. The automated hand can have a thumb with an auxiliary support. A catch can be provided to restrict pivoting of a digit under load. A wrist can be clamped to the hand, can be releasably electrically coupled to the hand, can be locked against rotation, and can include resiliently deformable pieces. A cover can also be provided for an automated hand. The cover can include a knitted body and a structural brace.

IPC Classes  ?

• A61F 2/50 - Prostheses not implantable in the body
• A61F 2/58 - ElbowsWrists
• A61F 2/68 - Operating or control means
• A61F 2/70 - Operating or control means electrical
• G06F 3/044 - Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means

Abstract

A rotatable and removable wrist connection for a prosthetic hand. A prosthesis coupling includes first and second ball race sections that may be moved together or apart to constrain ball bearings to an inner zone or an outer zone to allow the prosthesis coupling to be secured to or removed from a socket coupling. A socket coupling includes a socket body for receiving a wrist coupling having a rotary connector core extending from the socket body and compliantly mounted to the socket body.

IPC Classes  ?

• A61F 2/58 - ElbowsWrists

Abstract

The invention relates to an automated hand, such as a prosthetic hand. In one form, the automated hand may be fluid compatible. In one form, the automated hand may comprise features to reduce the risk of harm to motors and/or other sensitive components of the hand when subject to an impact. In one form, the hand may comprise a wrist joint configured to allow the hand to curl and flex and/or to rotate. In one form, one or more digits of the hand may be individually controlled. In one form the hand may include a thumb rotation locking mechanism. In one form the hand may be provided with removable grip plates. In one form, the hand may be configured for use as a training hand.

IPC Classes  ?

• A61F 2/58 - ElbowsWrists
• A61F 2/68 - Operating or control means

Abstract

The invention relates to a gripping device, such as an automated hand, comprising a plurality of metacarpal members, each metacarpal member having a first end attached to a support frame via a universal joint and having a second end attached to a gripping member, wherein the metacarpal members are able to pivot upwardly, downwardly and laterally. Where adjacent metacarpal members together form a palm of the hand, the ability of the metacarpal members to move up, down and laterally helps the palm to grip an object and also helps the palm to withstand at least some forces from above, below and from the side.

IPC Classes  ?

• A61F 2/54 - Artificial arms or hands or parts thereof
• B25J 15/08 - Gripping heads having finger members