Three-dimensional force-sensing surgical needle for minimally invasive surgery

Abstract

The invention discloses a three-dimensional force-sensing surgical needle for minimally invasive surgery. The needle comprises a minimally invasive surgery needle, the minimally invasive surgery needle comprises a medical surgery needle head which is fixedly connected to a thin hose and used for injecting and sucking a liquid or a medicine and a hollow metal tube which is connected to the medicalsurgery needle head, and three fiber grating sensors are evenly distributed on the outer surface of the hollow metal tube in the 120-degree axial direction in the circumferential direction; a fiber grating demodulator is connected to the fiber grating sensors, emits laser to the fiber grating sensors, receives laser signals with a specific wavelength returned by the fiber grating sensors, convertsthe laser signals into digital electric signals and demodulates the wavelength corresponding to each grating point; and a data acquisition and force decoupling calculation device receives the wavelength corresponding to each grating area sent by the fiber grating demodulator and performs analysis and calculation so as to obtain stress information of the front end of the minimally invasive surgeryneedle in real time, wherein the stress information is displayed by a display device in real time. The surgical needle is used for detecting the operation force in the operation process in real time.

Description

technical field [0001] The invention relates to the technical field of minimally invasive surgery, in particular to a three-dimensional force-sensing surgical needle for minimally invasive surgery. Background technique [0002] During minimally invasive surgery, the contact force information between surgical tools and human biological soft tissues has an important impact on the safety of surgical operations. In surgical operation engineering, doctors only rely on experience and visual information to indirectly perceive the contact force between surgical tools and human biological soft tissues. When performing some specific surgical operations, such as puncture surgery and microsurgery, they often cannot accurately perceive the magnitude of the operating force. This status quo increases the risk of clinical surgery. Once the surgical operation force is too large, it is very easy to cause secondary surgical injury or even irreversible trauma to the patient. [0003] At presen...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the problems in the prior art, and provide a three-dimensional force sensing surgical needle based on a fiber Bragg grating sensor for minimally invasive surgery, which is a minimally invasive surgical needle with a three-dimensional force sensing function, capable of Realize three-degree-of-freedom force detection to solve the problem that the three-dimensional force sensor in the prior art often occupies the middle channel and cannot provide the working channel required for minimally invasive surgical needles

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