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Mercury-free clinical thermometer and production method thereof

The technology of a thermometer and its manufacturing method is applied in the field of medical equipment, which can solve the problems of temperature-sensing liquid falling back and inaccurate measurement readings, and achieve the effect of ensuring accuracy

Active Publication Date: 2013-06-05
徐学海 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing thermometers, when the temperature-sensing bubble is separated from the human body, the temperature of the temperature-sensing bubble itself will drop, which will cause the temperature-sensing liquid in the temperature-sensing bubble to shrink when it is cold, so that the temperature-sensing liquid in the pores will flow back to the temperature-sensing body. Bubbles, causing the liquid level of the temperature-sensing liquid to fall back in the capillary pores, resulting in inaccurate measurement readings

Method used

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  • Mercury-free clinical thermometer and production method thereof
  • Mercury-free clinical thermometer and production method thereof
  • Mercury-free clinical thermometer and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Such as Figure 1 to Figure 3 As shown, the mercury-free thermometer provided in this embodiment includes a tube body 1 and a temperature-sensitive bulb 2. Capillary holes 11 are formed inside the tube body 1 along the axial direction, and a cavity 21 is formed inside the temperature-sensitive bulb 2; One end of the tube body 1 is connected to the temperature-sensitive bubble 2, and the capillary hole 11 is connected to the cavity 21; a throat bubble 12 is also formed on the capillary hole 11; A flow channel 14 is formed between the outer wall of the dot protrusion 13; the flow area of ​​the flow channel 14 is smaller than the flow area of ​​the capillary hole 11; the temperature-sensing bubble 2 and the capillary hole 11 are provided with a temperature-sensing liquid.

[0065] when using it:

[0066] The temperature-sensing bubble 2 is used to contact the human body, so that the temperature-sensing liquid in the cavity 21 will expand after being heated, and the temper...

Embodiment 2

[0083] Such as Figure 4 As shown, the method for manufacturing a mercury-free thermometer provided in this embodiment may specifically include the following steps:

[0084] Step 101, forming a tightening port by melting one end of the tube material;

[0085] Step 102, heating the material of the pipe body and forming throat bubbles on the capillary pores;

[0086] Step 103, welding the tightening port to one end of the temperature-sensitive bulb material;

[0087] Step 104, heating the material of the pipe body, and forming a raised spot in the throat bubble;

[0088] Step 105, heat and seal the temperature-sensitive foam tube material, and make a temperature-sensitive foam to obtain a semi-finished product;

[0089] Step 106, pouring the temperature-sensitive liquid into the capillary pores and cavities inside the semi-finished product;

[0090] Step 107, refilling the temperature-sensing liquid, and burning out the capillary pores in the pipe material;

[0091] Step 10...

Embodiment 3

[0115] Such as Figure 15 As shown, the method for manufacturing a mercury-free thermometer provided in this embodiment may specifically include the following steps:

[0116] Step 201, melting one end of the pipe material to form a tightening port;

[0117] Step 202, heating the material of the pipe body and forming throat bubbles on the capillary pores;

[0118] Step 203, welding the tightening port to one end of the temperature-sensitive bulb material;

[0119] Step 204, heating the material of the pipe body, and forming a raised spot in the throat bubble;

[0120] Step 205, heat and seal the temperature-sensitive foam tube material, and make a temperature-sensitive foam to obtain a semi-finished product;

[0121] Step 206, pouring the temperature-sensitive liquid into the capillary pores and cavities inside the semi-finished product;

[0122] Step 207, refilling the temperature-sensing liquid, and burning out the capillary pores in the pipe material;

[0123] Step 208,...

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Abstract

The invention provides a mercury-free clinical thermometer which comprises a pipe body and a temperature sensing bubble, a capillary hole is formed inside the pipe body along the axial direction, a hollow cavity is formed inside the temperature sensing bubble, one end of the pipe body is connected with the temperature sensing bubble, the capillary hole is connected with the hollow cavity, a throat bubble is formed in the capillary hole, a stationary point protrusion is arranged in the throat bubble, a flow passage is formed between the inner wall of the throat bubble and the outer wall of the stationary point protrusion, and an open area of the flow passage is smaller than that of the capillary hole. Due to the facts that the throat bubble is arranged in the capillary hole and the stationary point protrusion is formed in the throat bubble, the open area is decreased when temperature sensing liquid passes through the throat bubble and the stationary point protrusion, and accordingly after the temperature sensing liquid passes through the throat bubble, backflow due to self-shrinkage of the temperature sensing liquid does not occur, falling back of a liquid level, in the capillary hole, of the temperature sensing liquid is avoided, and accuracy of measurement reading is ensured. The invention further provides a manufacture method of the mercury-free clinical thermometer, the mercury-free clinical thermometer which is manufactured through the method can effectively ensure accuracy of the measurement reading.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a mercury-free thermometer and a production method thereof. Background technique [0002] As a common medical device, thermometers are widely used in clinical medicine and people's daily life. [0003] The thermometer mainly includes a tube body and a temperature-sensing bulb. Capillary holes are arranged in the tube body along the axial direction, and the capillary holes are connected with the inner cavity of the temperature-sensing bulb. The inner cavity of the temperature-sensing bulb is filled with a temperature-sensing liquid. When taking a body temperature, the temperature-sensing bubble is brought into contact with the human body, and the temperature-sensing liquid enters the capillary from the temperature-sensing bubble after being heated and expanded, and then the body temperature of the human body can be measured according to the amount of the temperature-sensin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K5/22
Inventor 徐学海
Owner 徐学海
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