Dual-grip robotic hand

Dual-Grip Robotic Hand

This technology features a mechanism that performs dual-stage gripping and hemostasis by first securing an irregular object (such as a patient's limb) with mechanical fingers, followed by applying physical pressure using an inflatable air cuff. It maintains the grip state using a ratchet gear and locking member, while controlling gripping stability through pressure sensors and a through-type primary sensor unit.

Conventional robotic hands struggle to accurately grip irregular objects like human limbs due to structural limitations in their finger design, making it difficult to perform precise tasks such as arterial compression for hemostasis.

This technology consists of a link-structured finger unit, a finger drive unit, an air cuff, an air supply unit, a laser sensor (primary sensor) for object positioning, a pressure sensor (secondary sensor) for grip force detection, and a grip maintenance unit based on a ratchet/locking member to secure the mechanical grip. It can be applied to logistics picking, service robots, and manufacturing automation to improve object handling capabilities, enhance the accuracy of hemostasis, and prevent excessive clamping force or skin damage.

‍

‍

Key Features:

• A grip maintenance unit featuring a locking member that engages with the teeth of a ratchet gear to prevent the fingers from rotating in the direction of extension, along with an elastic member that biases the locking member toward the ratchet gear.
• A finger drive unit that actuates the fingers in either a bending or extending direction.
• A pair of opposing finger units arranged to grip an object.
• An air supply unit that provides air to the air cuff.

‍

This invention was developed with support from the Ministry of Trade, Industry and Energy for the development of safety-guaranteed soft manipulators and multifunctional gadgets for relief operations.