Potable metal foreign body quick examination device and method for positioning in-vivo metal foreign body

A metal foreign body, portable technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve problems such as poor anti-interference ability, misoperation, etc., and achieve the effect of eliminating interference, high positioning accuracy, and unique conception

Inactive Publication Date: 2009-11-25
FOURTH MILITARY MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the traditional metal detector can realize the rapid positioning of metal, it has poor anti-interference ability and often malfunctions, especially in front of the operating table, where the hospital bed, various instruments, instruments, etc. are all metal. This is the main reason why traditional metal detectors cannot be used clinically

Method used

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  • Potable metal foreign body quick examination device and method for positioning in-vivo metal foreign body
  • Potable metal foreign body quick examination device and method for positioning in-vivo metal foreign body
  • Potable metal foreign body quick examination device and method for positioning in-vivo metal foreign body

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Experimental program
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Embodiment 1

[0023] Such as figure 1 and figure 2 As shown, a portable device for quickly checking metal foreign objects in the body includes a fluxgate sensor probe 6 with a fluxgate signal processing circuit, a power supply module 1, a control module 7 (signal processing, analysis), and a display alarm module. The fluxgate sensor probe 6 includes two fluxgate sensors I and II with structures placed side by side and with the same performance parameters. For the structure of fluxgate sensors I and II, see Figure 4 , a permalloy strip is wound on a long ring type non-magnetic steel core 14 wrapped with a permalloy strip, and an excitation coil 13 is wound symmetrically on both sides of the long ring type, and the excitation coil 13 is connected to a crystal oscillator to generate a sinusoidal excitation signal; induction The coil 12 is wound on the circular tube frame 15 to output the detection induction signal. Inside the circular tube frame 15 is placed a long-ring non-magnetic steel ...

Embodiment 2

[0027] Such as image 3 As shown, the detection method of this embodiment is as follows: fix a Chinese rabbit on the operating table, select a gun shell, a medical sewing needle, and a one-yuan coin and place them in the rabbit's chest cavity, abdominal cavity, and buttocks muscle tissue. Put the pre-charged battery into the battery compartment of the power supply module, turn on the power switch of the instrument to connect the battery to make the system work, set the working parameters through the keyboard, and adjust the measured output value by adjusting the external potentiometer knob to make the system output Be at your best. Take the fluxgate sensor probe 6 out of the probe chamber 10, hold the probe in the left hand and the host in the right hand, attach the probe to the rabbit body surface and move slowly, and check back and forth 3-5 times. When the measurement output jitters and the photoacoustic module alarms at the same time, find 2-3 positioning points with the mo...

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PUM

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Abstract

The invention discloses a potable metal foreign body quick examination device and a method for positioning an in-vivo metal foreign body, which are characterized in that: a fully pre-charged rechargeable battery is arranged in a battery box in a power supply module; and after the check for ensuring that metal objects on a measurer and an experimenter are removed, a power supply switch is turned on to connect the power supply to enable the device to work. Input equipment selects the denoising degree and sensitivity parameter of a control module and adjusts a measurement output value, so that the system is in an optimal state; and a probe which consists of two parallelly arranged fluxgate sensors and a signal processing circuit thereof is attached to the body surface of the experimenter and slowly moves to reciprocally examine the metal foreign body for 3 to 5 times, and when an output displaying and alarming unit displays that the measurement output is changed obviously and gives an alarm, 2 to 3 points at which the measurement output changes most obviously are found out near a measurement region to serve as positioning points and the center of a circle of the selected positioning points is determined as the position of the metal foreign body.

Description

technical field [0001] The invention relates to a device for screening metal foreign bodies and a method for locating foreign bodies in the body, which are used for rapid positioning of ferromagnetic metal foreign bodies and rapid screening of preoperative and postoperative surgical instruments. Background technique [0002] Cases of metal foreign bodies are relatively common in clinical practice, and the types of foreign bodies are complex and the disease sites are many. Invasive foreign bodies in the body can be divided into primary type and secondary type according to the source: the primary type is the embedding or ingestion of exogenous foreign bodies such as guns, shells, needles, and coins. The secondary type is the legacy of small instruments during the operation, most of which are caused by the negligence of medical staff. Invasive foreign bodies not only bring many difficult problems to medical staff, but also increase the suffering of patients. [0003] The trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/06
Inventor 罗二平申广浩景达吴小明汤池闫一力徐巧玲路丽华
Owner FOURTH MILITARY MEDICAL UNIVERSITY
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