The Korea Institute of Machinery and Materials (KIMM) has achieved a major breakthrough with the development of an ultralight prosthetic robotic hand that facilitates stable and efficient grasping through simple control. The device incorporates an innovative mechanism that enables precise fingertip handling and adapts to different shapes of objects with easy-to-use motion commands.
A robotic hand with hybrid mechanism
The design is based on a hybrid mechanism that combines a four-bar linkage system with cable actuation, achieving a strong, natural grip along with the ability to mold to different shapes. This overcomes the limitations of conventional systems that feature fixed trajectories and less stable grips.
In addition, the KIMM team developed an underactuated thumb that utilizes the intermittent motion and dwell phase of the Geneva mechanism, allowing two degrees of freedom in the thumb to be controlled with a single actuator. This solution significantly reduces weight and improves functionality, unlike previous designs that relied on passive joints or additional actuators.
A solution for amputees
It is important to mention that this technology brings great comfort to amputee users. amputee usersIt also helps to reduce the physical load and optimizes energy consumption, extending the battery life of the prosthesis. It also contributes to reduce the physical load and optimizes energy consumption, prolonging the battery life of the prosthesis.
The prosthetic hand facilitates a stable and efficient grip. Source: KIMM
Likewise, principal investigator Minki Sin noted that they are exploring the application of these mechanisms on humanoid robotswhere they can facilitate fast and efficient responses by reducing the computational load. This development positions KIMM as a reference in medical robotics, boosting national competitiveness in a market that historically depended on foreign technologies.
Currently, patent applications have been filed and the transfer and commercialization of this technology, which promises to transform the field of myoelectric prosthetic hands and medical robotics, is being sought.
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Source and photos: KIMM