A 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, including a minimally invasive surgical needle. Needle, a hollow metal tube connected with a medical surgical needle, on the outer surface of the hollow metal tube, there are three fiber grating sensors uniformly distributed along the circumferential direction of 120° axially; the fiber grating demodulator is connected with the fiber grating sensor, The sensor emits laser light, receives the laser signal of a specific wavelength returned by the fiber grating sensor, converts the laser signal into a digital electrical signal and demodulates the wavelength corresponding to each grating point; the data acquisition and force decoupling calculation device receives the signal sent by the fiber grating demodulator Analyze and calculate the wavelengths corresponding to each grating area, and obtain the force information of the front end of the minimally invasive surgical needle in real time, which is displayed by the display device in real time. The invention is used for real-time detection of operating force during operation.

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] In the process of minimally invasive surgery, the contact force information between surgical tools and human biological soft tissue 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 tissue. When performing some specific surgical operations, such as puncture surgery and microsurgery, they often cannot accurately perceive the magnitude of the operating force. This situation increases the risk of clinical surgery. Once the surgical operation force is too large, it is very easy to cause secondary surgery damage to the patient, or even irreversible trauma. [0003] A...

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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