Airbag clamping device with function of feeding back intervention operation resistance

Abstract

The invention provides an airbag clamping device with a function of feeding back intervention operation resistance. The airbag clamping device comprises an airbag, an airbag casing pipe, an air pump, a pressure measuring chamber, an air pipe and an air pressure sensor, wherein the airbag and the an airbag casing pipe are connected without circular relative rotation; the two sides of one end of the airbag casing pipe are respectively provided with a baffle plate; the air pump is connected with the pressure measuring chamber, the air pipe and the airbag successively; and the air pressure sensoris arranged in the air pressure measuring chamber. According to the airbag clamping device, the clamping function of a conduit is realized by aerating the airbag; the airbag is in tight contact with the conduit at the peripheral direction of the conduit; the appearance of the conduit is kept; and the conduit is prevented from being damaged. The aerating pressure is detected by using the air pressure sensor so as to modulate the aeration quantity, control the size of an inner chamber of the airbag and adapt to the clamping function of the conduits in different diameters. A foil gauge is arranged on an elastic spoke plate between the airbag casing pipe and an outer casing pipe, so that the measurement of a pushing force and a twisting force is realized by using the deformation of the foil gauge. The airbag clamping device is capable of not only realizing both the measurements of two orthogonal direction feedback forces, but also ensuring the measurement result to be accurate due to a smaller inertia.

Description

technical field [0001] The invention relates to an air bag clamping device capable of feeding back interventional operation resistance, in particular to a clamping device used for conveying catheters in minimally invasive interventional operations and capable of directly feeding back push-pull and twisting operation resistance functions. Background technique [0002] Endovascular minimally invasive interventional surgery has many advantages and has been widely used at home and abroad. As the main tool, the contact force information between the catheter and the vessel wall during the procedure determines the safety of the interventional operation to a large extent. With the development of medical assistant robot technology, the idea of ​​master-slave intervention has been introduced into the field of minimally invasive vascular intervention. This mode of operation not only enables the doctor to leave the operation site, thereby avoiding radiation damage, but also greatly sim...

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Problems solved by technology

[0004] In order to overcome the problems that the existing catheter delivery device cannot accurately obtain the force feedback information of the push-pull and twisting operations, has a large inertia, is difficult to meet the requirements for clamping catheters with various diameters, and adopts mechanical clamping methods to cause deformation of the catheter, the present invention proposes a An air bag clamping device that can feedback interventional operation resistance, the device clamps the catheter by the air bag, and the feedback of the operation resistance is realized by the strain gauges placed axially and radially on the elastic web plate, which is suitable for the delivery of catheters of different sizes

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