A T-handle has been designed to be used for minimally invasive implantation of a dynamic hip screw to repair fractures of the proximal femur. It is capable of being used in two actions: (i) push and hold (while using an angle guide) and (ii) application of torque when using the insertion wrench and lag screw tap. The T-handle can be held in a power or precision grip. It is suitable for either s...

Address for correspondence: Dr. Ankur Khandelwal, Department of Anaesthesiology, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Rae Barelly Road, Lucknow ‐ 226 014, Uttar Pradesh, India. E‐mail: [email protected] Sir, Securing of any external devices such as endotracheal tube (ETT), tracheostomy tube (TT), arterial and central venous catheters, nasogastric tubes, drainage tubes...

The quality of a grasp can often be measured as the magnitude within which any external wrench is resistible by \unit grasp force". In this paper, we present a numerical algorithm to compute the optimal grasp on a simple polygon, given contact forces of unit total magnitude. Forces are compared with torques over the radius of gyration of the polygon. We also address a grasp optimality criterion...

In this paper, a control solution featuring an energetic constraint is developed to improve the safety of a robotic manipulator sharing its workspace with humans. This general control structure, exploits a generic safe controller that ensures the respect of multiple constraints thanks to a Linear Quadratic Problem formulation. With a unified energetic formulation, the controller allows to expli...

In this paper we propose a force position control scheme in a DOF task space which is a generalization of the parallel control scheme in a DOF task space The con troller consists of a PD action on the position loop a PI action on the force loop together with gravity com pensation and feedforward of the desired contact force Kinestatic ltering is not used in the scheme Euler pa rameters are adop...