Puncture point locating device and puncture point locating method

Abstract

The invention discloses a puncture point locating device, and relates to the technical field of medical apparatuses. The locating device comprises a locating part and a laser transmitter, wherein thelocating part is located between a detector and an examination area, the locating part is grid-shaped, an X-ray image formed by superimposing images of the locating part and a target object can be obtained after X-rays penetrate through the locating part, the laser transmitter is used for projecting a grid-shaped pattern to the examination area, and the grid-shaped pattern corresponds to the imageof the locating part in the X-ray image. The invention discloses a puncture point locating method adopting the puncture point locating device. According to the puncture point locating device and thepuncture point locating method, laser beams with the grid-shaped pattern and the grid-shaped locating part are utilized to assist a doctor in locating puncture points of the body surface, the locatingprecision is improved, the operation time is shortened, the frequency of fluoroscopy of a C-shaped arm X-ray machine is reduced, and the radiation dosage during an operation is reduced.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a puncture point positioning device and a puncture point positioning method. Background technique [0002] In minimally invasive orthopedic surgery, doctors need to use X-ray fluoroscopy images to locate the location of the lesion, so as to estimate the needle insertion site. In order to facilitate the determination of the needle insertion site, the method commonly used in the prior art is: make the fine copper wire into a grid-like structure, and set some marks on the grid. Then attach the copper mesh to the body surface, use the C-arm to expose, observe the position of the bone through the X-ray film carrying the position information of the copper mesh, and use the relative position information of the bone and the copper mesh to determine the puncture point on the body surface. [0003] However, when using this method for positioning, there are the following problems: ...

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Problems solved by technology

[0003] However, when using this method for positioning, there are the following problems: 1) The position of the metal grid can only be placed by the doctor's visual inspection, and it cannot be ensured that it is within the range of the ray beam, which will lead to additional times of perspective; 2) The metal grid cannot do it 3) The distance between the metal grid and the surface of the detector is relatively long, and the X-rays emitted by the X-ray source component have a certain cone angle, which causes the metal grid to be projected onto the surface of the detector. The image of the detector is affected by the magnification, and the positioning accuracy will decrease

The above positioning process not only brings more radiation damage to the patient's body, but also the operation of fixing the copper mesh for many times also brings inconvenience to the doctor's work, reduces the doctor's work efficiency and also reduces the operation efficiency

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