Rapid switching device for end of arm tool (EOAT)

Abstract

The invention discloses a rapid switching device for end of arm tool (EOAT). The rapid switching device comprises an end handle, an inner shaft, an end tool connector and an end tool. The upper part of the inner shaft is fixedly connected with the end handle, while the lower part of the inner shaft is connected with a spring holding plate. The upper part of the spring holding plate is a spring pressure plate, and a compression spring is mounted between the spring holding plate and the spring pressure plate. A plurality of holes are arranged in the circumferential position of the inner chamber at the lower part of the inner shaft, steel balls are equipped in the hole and contact the internal taper face of the spring pressure plate. The two sides at the upper part of the end tool connector are provided with circular arc grooves matched with the arc of the steel balls, and the end tool connector is assembled in the inner chamber at the lower end of the inner shaft by means of the coordination of the circular arc grooves and the steel balls, and the end tool is fixed on the end tool connector by a welding or riveting way. The rapid switching device for EOAT has the advantages of simple structure, convenient operation, small volume, compact structure, light weight, reliable connection, rapid switching speed and the like.

Description

Technical field [0001] The present invention relates to a switching device, in particular to a switching device used for clamping and quick replacement of end surgical tools of minimally invasive surgical robotic arms such as surgery. Background technique [0002] In minimally invasive surgery, multiple assistants are required to forcefully open the incision to remove the internal organs of the patient. However, we know that the surgical operation time is generally relatively long, and the operating staff is very easy to fatigue, and it is easy to cause the incision to not open properly. , The internal organs and lesions cannot be well isolated, so that it will seriously affect the doctor's surgical vision and operation. Therefore, in minimally invasive surgery, surgical assisted robotic arms are used to assist surgeons in performing minimally invasive surgery. Surgical assisted robotic arms are mainly used to assist doctors in opening incisions to solve the problem of human fati...

AI Technical Summary

Problems solved by technology

[0003] However, during the doctor’s operation, as a mechanical arm to assist the doctor’s operation, it is often necessary to switch the terminal auxiliary tool multiple times, and the time for each switch needs to be very short, so that the doctor can complete the operation in time and smoothly, which requires surgical instruments. It can be switched easily and quickly, and can be quickly fixed. In the existing robotic arm system, many robotic arms are used to hold different surgical instruments. If it is necessary to change different surgical instruments in the same operation at any time For different operations, the entire robot arm needs to be replaced, which will greatly increase the cost of the system

In addition, most of the existing end tool switching devices using the same robotic arm have problems such as troublesome switching, long switching time, and unreliable connection, which greatly affects the quality and effect of doctors' operations.

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