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Liquid taking and separating device

A technology of liquid separation and shunt, which is applied in the direction of pumping and pumping system, inoculation and ovulation diagnosis, medical science, etc. It can solve the problems of increasing fetal time, liquid leakage, and amniotic fluid time cannot be guaranteed, so as to achieve convenient operation and increase safety , The effect of shortening the amniotic fluid extraction time

Pending Publication Date: 2019-09-10
PEKING UNIV THIRD HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Multiple repeated operations increase the time that the fetus is exposed to the sharp instrument (puncture needle), and when the amniotic fluid is injected into the culture tube, it is prone to liquid leakage
[0003] In addition, the amniotic fluid extraction device in the prior art directly extracts the amniotic fluid vertically through the puncture needle with a syringe, which is time-consuming and laborious.
Moreover, due to the large difference in physical strength of doctors, the time of amniotic fluid extraction process cannot be guaranteed, and at the same time, it is completely manual control, and the accurate measurement of the amount of extraction cannot be achieved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one (extracting liquid and taking liquid)

[0029] An embodiment of the present invention provides a device for extracting and separating amniotic fluid, as attached figure 1 As shown, the amniotic fluid extraction and dispensing device includes a negative pressure generator, a shunt, a catheter, a puncture needle 7 and a plurality of containers; the negative pressure generator is connected to the shunt, the catheter, and the puncture needle 7 in sequence, preferably, In an optional embodiment of the negative pressure generator, the negative pressure generator is an electric pump, a manual knob pump or a syringe. When the electric pump is used, the amniotic fluid extraction time of the amniotic fluid extraction and dispensing device can be further shortened. The device can be used in conjunction with the scale line arranged on the negative pressure generator to realize accurate measurement of amniotic fluid extraction. Described shunt is preferably medical t...

Embodiment 2

[0031] Embodiment two (liquid extraction and liquid separation)

[0032] An embodiment of the present invention provides a device for extracting and separating amniotic fluid, as attached figure 2 As shown, the amniotic fluid extracting and dispensing device includes a negative pressure generator 1, a plurality of medical three-way valves 4, a flexible pipe 6, a puncture needle 7 and a plurality of culture tubes 8; the negative pressure generator 1 and a plurality of medical three-way valves The through valve 4, the hose 6, and the puncture needle 7 are connected sequentially, wherein a plurality of the medical three-way valves 4 are cascaded, each of the medical three-way valves 4 is provided with a valve switch 5, and the leftmost medical three-way valve 4 Connected to the hose 6, the rightmost medical three-way valve 4 is connected to the negative pressure generator 1, and each medical three-way valve 4 is connected to several culture tubes 8; All can correspond to one co...

Embodiment 3

[0035] Embodiment three (mixed liquid)

[0036] In an optional embodiment, when multiple shunts are cascaded and each shunt is tightly connected to the container, the negative pressure generator can be used as a liquid mixer. The negative pressure generator is preferably a syringe, and the shunt is preferably a medical three-way valve. 4. The sealed container is preferably a syringe connected with the medical three-way valve 4.

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Abstract

The invention belongs to the technical field of medical instruments and provides a liquid taking and separating device. The liquid taking and separating device comprises a negative pressure generator,a diverter, a catheter, a puncture needle and containers, wherein the negative pressure generator is sequentially connected with the diverter, the catheter and the puncture needle, and a valve is arranged on the diverter; when liquid is sucked, the valve enables the negative pressure generator and the puncture needle to be communicated, the connection between the negative pressure generator and the containers is cut off, and the liquid is stored in the negative pressure generator; after the suction is completed, the valve enables the negative pressure generator and the containers to be communicated, and the connection between the negative pressure generator and the puncture needle is cut off; the diverter includes more than two branch outlets for diverting liquid into two or more containers. The liquid taking and separating device has the advantages that the liquid taking and separating device can suck a large amount of amniotic fluid at a time by using the negative pressure generatorto realize multiple times of liquid separation, and the time of exposing a fetus to the puncture needle is shortened.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a liquid-taking and liquid-distributing device. Background technique [0002] Amniocentesis is the most widely performed minimally invasive operation during pregnancy. The purpose is to aspirate amniotic fluid for the detection of amniotic fluid cells. During amniocentesis, it is generally necessary to extract about 30ml of amniotic fluid. In special cases, the amount extracted is more. Use a 10ml syringe and operate several times to complete the entire suction process. Repeated operations many times increase the time that the fetus is exposed to the sharp instrument (puncture needle), and when the amniotic fluid is injected into the culture tube, situations such as liquid leakage are prone to occur. [0003] In addition, the amniotic fluid extraction device in the prior art directly extracts the amniotic fluid vertically through the puncture needle with a sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B10/00A61M1/00
CPCA61M1/0023A61B10/0048
Inventor 魏瑗赵扬玉龚丽君卢葛霖
Owner PEKING UNIV THIRD HOSPITAL
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