Axial rotary module for minimally invasive instruments

Abstract

The invention discloses an axial revolution module of a minimally invasive apparatus. The axial revolution module comprises a support pedestal and a revolution seat; the revolution seat passes through the support pedestal and is connected with the support pedestal in a rotating mode; the support pedestal and the revolution seat share an axis being a revolution axis of the revolution module. A revolution drive unit is connected to the rear end, passing through the support pedestal, of the revolution seat. The revolution seat can rotate around the central axis of the revolution seat under the drive of the revolution drive unit. The revolution drive unit contains a positive rotation steel wire rope I and a reversed rotation steel wire rope II, wherein the positive rotation steel wire rope I and the reversed rotation steel wire rope II are fixed at the rear end axle diameter of the revolution seat; the steel wire rope I and the steel wire rope II with opposite rotation directions are guided by guiding wheels respectively and then are wound at a wire fixing mechanism in a tensioning mode; the wire fixing mechanism is connected with a rotation drive unit; and the guiding wheels are installed on the support pedestal by a guiding wheel shaft in a rotating mode. According to the invention, the structure is simple; and a few parts are used. The axial revolution module is connected with the rear drive nit in a wire transmission mode, thereby simplifying the complexity of the apparatus and reducing the structural dimension.

Description

technical field [0001] The invention relates to a joint module of a surgical instrument, in particular to a joint module of a minimally invasive surgical instrument. Background technique [0002] Minimally invasive surgery represented by laparoscopy is known as one of the important contributions of medical science to human civilization in the 20th century, and is the main theme of global surgical development in the 21st century. In minimally invasive surgery, doctors use modern medical imaging equipment such as thoracic and laparoscopes to perform surgical operations by manipulating the matching minimally invasive surgical instruments. The advantages of fast recovery time greatly reduce the pain suffered by patients, and are widely used in clinical operations. However, it should be pointed out that under the constraints of minimally invasive technology, complex surgical operations become very difficult, which requires more stringent surgical skills for doctors, and also put...

AI Technical Summary

Problems solved by technology

The terminal instrument of the Zeus minimally invasive surgical robot system is a two-degree-of-freedom instrument driven by a connecting rod, which has the problems of few degrees of freedom and complex structure; the terminal instrument of the Da Vinci system has good flexibility, but its structure is complicated; internationally, such as The United States, Germany, Japan, Poland and other scientific research institutions have successively developed terminal instruments for minimally invasive surgical robots, but most of them have shortcomings such as complex structure, low flexibility, and poor operability. One of the reasons for the above situation is the joint module of the instrument. The design is unreasonable, and it is difficult to meet the requirements of exquisite structure and flexible transmission

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