Biological magnetic diagram instrument probe and magnetocardiography instrument

A biomagnetic and magnetic signal technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problems of high evaporation rate of liquid helium, extra noise, etc., and achieve the effect of reducing the evaporation rate

Inactive Publication Date: 2017-11-28
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide biomagnetog

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  • Biological magnetic diagram instrument probe and magnetocardiography instrument
  • Biological magnetic diagram instrument probe and magnetocardiography instrument
  • Biological magnetic diagram instrument probe and magnetocardiography instrument

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Embodiment Construction

[0044] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the same time, terms such as "upper"...

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Abstract

The invention provides a biological magnetic diagram instrument probe. The biological magnetic diagram instrument probe comprises a shell and a probe body, wherein the shell comprises a first containing part filled with first liquid inert gas; the probe body is arranged in the shell; the probe body comprises an air outlet, an electronic component, and a second containing part filled with second liquid inert gas; the first liquid inert gas is used for cooling the electronic component; the temperature of the second liquid inert gas is higher than the temperature of the first liquid inert gas and lower than the temperature of the air outlet; the second containing part is arranged in a conduction path through which first inert gas obtained after gasifying of the first liquid inert gas is conveyed to the air outlet from the first containing part. For the biological magnetic diagram instrument probe provided by the invention, a liquid nitrogen interlayer is arranged between liquid helium and the air outlet, so that helium gas evaporated by the liquid helium reaches the room temperature only after passing through the liquid nitrogen layer, therefore, the evaporation rate of liquid helium is greatly reduced, and the additional noise is avoided.

Description

technical field [0001] The invention relates to the field of biomedical instruments, in particular to a probe of a biomagnetograph and a magnetocardiograph. Background technique [0002] Superconducting quantum interference device (SQUID) is the most sensitive magnetic detection device known so far, and can be used to detect extremely weak biomagnetic fields such as heart magnetism, brain magnetism, and spinal magnetism. SQUID needs to work at a temperature of 4.2K, so liquid helium must be filled in the Dewar to maintain this temperature. The use of liquid helium is often accompanied by a large amount of evaporation, and the price of liquid helium is high, which causes a waste of cost. For example, for a 36-channel magnetic heart system, the Dewar height is 90cm, the inner diameter is 30cm, the maximum height of liquid helium filling is 42cm, and the capacity is about 28 liters; the system can work normally for 4 days after being filled with liquid helium. If the system o...

Claims

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Application Information

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IPC IPC(8): A61B5/04
CPCA61B5/242A61B5/243A61B5/245
Inventor 鲁丽陈威孔祥燕王毅杨瑞虎
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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