Detector for precisely locating focus in laparoscopic minimally invasive surgery

Abstract

The invention discloses a detector for precisely locating a focus in laparoscopic minimally invasive surgery, and relates to the field of medical apparatuses. The detector is used in cooperation witha magnetic material. The detector comprises a detecting rod. A handheld part is arranged at one end of the detecting rod. A sensing part is arranged at the other end of the detecting rod. A detectingchip is arranged in the handheld part. A sensing probe is arranged in the sensing part. The sensing probe is connected with the detecting chip. The detecting chip is used for changing the resonance frequency of the sensing probe according to a to-be-measured object so that the resonance frequency of the sensing probe can be matched with that of the to-be-sensed object. The to-be-sensed object comprises a magnetic locating preparation. The magnetic locating preparation can be specifically combined with the focus after being injected into the focus. When the sensing probe is located on the surface of an intraperitoneal intestinal canal, the closer the distance between the sensing probe and the to-be-sensed object is, the stronger the corresponding sensing signals are. The detector can rapidly and accurately locate the focus on the surface of the intraperitoneal intestinal canal, the configuration of surgery operators is reduced, the operation time is shortened, and the surgery difficultyis lowered.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a detector for precise positioning of lesions in laparoscopic minimally invasive surgery. Background technique [0002] At present, when locating small gastrointestinal tumor lesions, it is necessary to use a colonoscope to locate the lesions during the operation, and skilled endoscopists are required to cooperate with the search, and metal clips or injection dyes are used to mark the lesions. [0003] In the process of using a colonoscope to find lesions, a large amount of gas needs to be injected to maintain the field of vision. Therefore, after the colonoscope is taken out, there will be a large amount of residual gas in the digestive tract, which will cause the intestinal tube to expand, and the operable space in the abdominal cavity will be significantly reduced, which will seriously affect the follow-up surgery. At the same time, when the size of the lesion is small, or t...

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Problems solved by technology

[0003] In the process of using a colonoscope to find lesions, a large amount of gas needs to be injected to maintain the field of vision. Therefore, after the colonoscope is taken out, there will be a large amount of residual gas in the digestive tract, which will cause the intestinal tube to expand, and the operable space in the abdominal cavity will be significantly reduced, which will seriously affect the follow-up surgery. At the same time, when the size of the lesion is small, or the lesion has no primary large lesion after additional surgery or neoadjuvant treatment, and lacks the permanent positioning mark of the first indwelling, use colonoscopy to find the corresponding lesion is more difficult and takes longer

[0004] After using the metal clip for positioning, the metal clip is easy to fall off and shift in the body, it is difficult to use for long-term positioning, and it is difficult to find outside the cavity; the dye is easy to diffuse after positioning, not only the positioning accuracy is low, but also the positioning time is short. At the same time, Does not provide an indication for imaging studies and is not suitable as a guideline marker for long-term follow-up

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