Approximate telecentric fixed-point mechanism for minimally invasive surgery operation

Abstract

The invention discloses an approximate telecentric fixed-point mechanism for minimally invasive surgery operation. The approximate telecentric fixed-point mechanism for minimally invasive surgery operation comprises a first motor, a second motor, a first rod piece, a second rod piece, a third rod piece and a tail-end surgical instrument, wherein the first motor is detachably installed on a first motor installation plate, the second motor is arranged below the first motor through a second motor installation plate, a tooth part is also arranged on the second motor installation plate, one end of the first rod piece is fixedly connected with an output shaft of the second motor, a tooth part is arranged at the other end of the first rod piece, one end of the second rod piece is connected with the first rod piece in a pivoting mode, one end of the third rod piece is connected with the second rod piece in a pivoting mode, a convex rib is fixedly arranged on the third rod piece and is located in the middle of the third rod piece, and the tail-end surgical instrument is arranged on the third rod piece in a sliding mode through the convex rib. According to the approximate telecentric fixed-point mechanism for minimally invasive surgery operation, teleentric fixed-point movement of the tail-end surgical instrument can be achieved approximately, the structure is compact, the working space is large during surgical operation, control is convenient, and the actual requirement of minimally invasive surgery can be well met.

Description

Technical field: [0001] The invention relates to the technical field of medical instruments, and more specifically relates to an approximate telecentric fixed point mechanism. Background technique: [0002] Minimally invasive surgery is performed using modern medical instruments and related equipment. In minimally invasive surgery, it is often necessary to use various instruments to complete the operation. The telecentric fixed point mechanism is the core mechanism in the minimally invasive surgical instrument device. The existing telecentric fixed point mechanism is based on a parallelogram mechanism. As the main body, there are problems such as large structural size, complex structure, and difficult control, which are not conducive to the implementation of minimally invasive surgery. Invention content: [0003] The purpose of the present invention is to address the deficiencies of the prior art, and to provide an approximate telecentric fixed point mechanism for minimal...

AI Technical Summary

Problems solved by technology

In minimally invasive surgery, it is often necessary to use various instruments to complete the operation. The telecentric fixed point mechanism is the core mechanism in the minimally invasive surgical instrument device. The existing telecentric fixed point mechanism is based on a parallelogram mechanism. As the main body, there are problems such as large structural size, complex structure, and difficult control, which are not conducive to the implementation of minimally invasive surgery

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