Device for quantitatively collecting amniotic fluid under negative pressure

Abstract

The utility model discloses a device for quantitatively collecting amniotic fluid under negative pressure, which comprises a puncture component and an amniotic fluid collecting component, the puncture component comprises a puncture needle and a needle core, one end of the puncture needle is provided with a tip, the other end of the puncture needle is provided with a connecting part, and the needle core is removably inserted in the puncture needle. And one end of the needle core is also provided with an end seat matched with the connecting part and used for sealing the connecting part. The amniotic fluid collecting assembly comprises a three-way connecting pipe, a first collecting bottle and a second collecting bottle, an inlet of the three-way connecting pipe is used for being connected with the connecting part, a first outlet and a second outlet of the three-way connecting pipe are connected with the first collecting bottle and the second collecting bottle respectively, and control valves for controlling connection and disconnection are arranged at the first outlet and the second outlet of the three-way connecting pipe. The first collecting bottle and the second collecting bottle are both provided with quantitative negative pressure generating devices used for generating specific negative pressure in the bottles. By using the device, the technical problems that in the prior art, amniotic fluid is difficult to extract, and embryo injury is easily caused can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a device for quantitatively collecting amniotic fluid under negative pressure. Background Art

[0002] Currently, amniocentesis is usually used in clinical practice for pregnant women who need prenatal diagnosis in the second trimester. Amniotic fluid is removed for fetal exfoliated cell examination, virus and microbial examination, and metabolite examination to determine whether the fetus has chromosomal genetic abnormalities, whether it is infected with viruses and other microorganisms, and to evaluate the growth and development of the fetus. It is currently the most widely used prenatal diagnostic technology.

[0003] Amniocentesis is a method of prenatal diagnostic sampling and is generally suitable for prenatal diagnosis in mid-pregnancy.

[0004] The existing technology currently uses manual suction, which not only increases the workload and labor intensity of medical staff, but also makes it difficult to ensure the stability of the syringe when pulling the syringe piston, which can easily cause the syringe to shake and cause the needle to injure the fetus and cause cell damage.

[0005] In addition, when extracting amniotic fluid, if a large amount is needed, you may need to remove the syringe and aspirate repeatedly. After drawing the amniotic fluid, it must be pushed into the test tube again for inspection. Such multiple changes and contact with the external environment can easily cause damage to the amniotic fluid cells and increase the chance of amniotic cavity infection.

[0006] The defects of the traditional amniocentesis collection method in clinical practice can no longer meet the current precision and high-standard usage requirements in the medical field. Summary of the invention

[0007] The utility model aims to provide a device for quantitatively collecting amniotic fluid under negative pressure, which can solve the technical problems in the prior art that the operation of extracting amniotic fluid is difficult and the fetus is easily damaged.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0009] A device for quantitatively collecting amniotic fluid under negative pressure comprises a puncture component and an amniotic fluid collection component.

[0010] The puncture assembly comprises a puncture needle and a needle core, wherein one end of the puncture needle is provided with a sharp tip and the other end is provided with a connecting portion. The needle core is removably inserted into the puncture needle, and one end of the needle core is also provided with an end seat for cooperating with the connecting portion for sealing the connecting seat.

[0011] The amniotic fluid collection assembly includes a three-way connecting tube, a first collecting bottle and a second collecting bottle. The inlet of the three-way connecting tube is used to be connected to the connecting part, and the first outlet and the second outlet of the three-way connecting tube are respectively connected to the first collecting bottle and the second collecting bottle. The three-way connecting tube is provided with a control valve for controlling on and off at the first outlet and the second outlet, and the first collecting bottle and the second collecting bottle are provided with a quantitative negative pressure generating device for generating a specific negative pressure in the bottle.

[0012] Furthermore, there is a clearance fit between the needle core and the puncture needle, which facilitates the removal of the needle core and prevents body fluids from entering the puncture needle during the puncture process.

[0013] Furthermore, the first collecting bottle and the second collecting bottle both include a bottle body and a bottle stopper, the bottle stopper is connected to the bottle body via threads, and the first outlet and the second outlet are both connected to the bottle body via the bottle stopper.

[0014] Furthermore, the quantitative negative pressure generating devices are connected to the bottle body through the bottle stopper, and the quantitative negative pressure generating devices can set a specific negative pressure to obtain a corresponding amount of amniotic fluid.

[0015] Furthermore, a scale is provided on the bottle body for determining the amount of amniotic fluid collected.

[0016] Furthermore, a pressure sensing alarm is provided at the inlet of the three-way connecting tube, which is used to sound an alarm when the puncture needle is blocked, reminding the doctor to adjust the position of the puncture needle in time.

[0017] Furthermore, the capacity of the first collecting bottle is no more than 10 ml, and is used to collect amniotic fluid previously mixed with maternal cells. The capacity of the second collecting bottle is no more than 50 ml, and is used to collect amniotic fluid to be tested.

[0018] Furthermore, the puncture assembly, the three-way connecting tube, the first collecting bottle, the second collecting bottle, and the quantitative negative pressure generating device are all detachably connected and are sterilized and assembled to complete independent packaging.

[0019] After adopting the above technical solution, the utility model has the following beneficial effects:

[0020] 1. The utility model realizes automatic suction of amniotic fluid by providing a three-way connecting tube and a collecting bottle provided with a quantitative negative pressure generating device, so that the doctor can save time and effort in the operation and improve the efficiency of the operation;

[0021] 2. The utility model is equipped with a pressure alarm device, which is convenient for timely adjusting the position of the needle core, avoiding the problem of fetal components blocking the puncture needle for a long time when manually extracting amniotic fluid, causing damage to the fetus and cell damage;

[0022] 3. The collection bottle can be used as a container for samples to be tested and sent directly for testing without transfer, thus avoiding the problem of damage and contamination of amniotic fluid cells caused by multiple transfers of samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model in embodiment 1.

[0024] Figure 2 It is a schematic diagram of the overall structure of the puncture needle and the needle core in the first embodiment.

[0025] Figure 3 It is a schematic diagram of the overall structure of the connection between the puncture needle and the amniotic fluid collection assembly in the first embodiment.

[0026] Figure 4 It is a schematic diagram of the overall structure of the utility model in the second embodiment.

[0027] Figure 5 It is a schematic diagram of the overall structure of the puncture assembly in the utility model in the second embodiment.

[0028] Figure 6 It is a schematic diagram of the overall structure of the puncture assembly after the needle core is removed in the second embodiment.

[0029] Description of the drawings: 1. puncture assembly, 11. puncture needle, 111. connection part, 12. needle core, 121. end seat, 13. needle seat, 131. isolation plug, 132. connection seat, 21. three-way connecting tube, 22. first collection bottle, 23. second collection bottle, 24. control valve, 25. quantitative negative pressure generating device, 26. pressure sensing alarm, DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the features and performance of a negative pressure quantitative amniotic fluid collection device in the present invention are further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] Please see attached Figures 1 to 3 , a device for negative pressure quantitative collection of amniotic fluid, comprising a puncture component 1 and an amniotic fluid collection component.

[0033] The puncture assembly 1 includes a puncture needle 11 and a needle core 12. The puncture needle 11 has a pointed tip at one end and a connecting portion 111 at the other end. The needle core 12 is removably inserted into the puncture needle 11. One end of the needle core 12 is also provided with an end seat 121 for cooperating with the connecting portion 111 to seal the connecting portion 111.

[0034] The amniotic fluid collection assembly includes a three-way connecting tube 21, a first collecting bottle 22 and a second collecting bottle 23. The inlet of the three-way connecting tube 21 is used to connect to the connecting part 111, and the first outlet and the second outlet of the three-way connecting tube 21 are respectively connected to the first collecting bottle 22 and the second collecting bottle 23. The three-way connecting tube 21 is provided with a control valve 24 for controlling the on and off at the first outlet and the second outlet. The first collecting bottle 22 and the second collecting bottle 23 are both provided with a quantitative negative pressure generating device 25 for generating a specific negative pressure in the bottle.

[0035] There is a clearance fit between the needle core 12 and the puncture needle 11, which facilitates the removal of the needle core 12 and prevents body fluid from entering the puncture needle 11 during the puncture process.

[0036] According to actual conditions, a protective cover may be provided on the outside of the puncture needle 12 to prevent injury and contact contamination during the use process.

[0037] The first collecting bottle 22 and the second collecting bottle 23 both include a bottle body and a bottle stopper. The bottle stopper is connected to the bottle body through threads, and the first outlet and the second outlet are both connected to the bottle body through the bottle stopper.

[0038] The quantitative negative pressure generating devices 25 are connected to the bottle body through the bottle stopper, and the quantitative negative pressure generating devices 25 can set a specific negative pressure to obtain a corresponding amount of amniotic fluid.

[0039] There is a scale on the bottle to determine the amount of amniotic fluid collected.

[0040] A pressure sensing alarm 26 is provided at the inlet of the three-way connecting tube 21 for sounding an alarm when the puncture needle 11 is blocked, so as to remind the doctor to adjust the position of the puncture needle 11 in time.

[0041] The capacity of the first collecting bottle 22 is no more than 10 ml, and is used to collect the amniotic fluid mixed with maternal cells in the early stage. The capacity of the second collecting bottle 23 is no more than 50 ml, and is used to collect the amniotic fluid to be tested.

[0042] The puncture assembly 1, the three-way connecting tube 21, the first collecting bottle 22, the second collecting bottle 23, and the quantitative negative pressure generating device 25 are all detachably connected and are sterilized and assembled to complete independent packaging.

[0043] In specific implementation, all devices installed in the utility model are connected and sterilized, and the puncture components and amniotic fluid collection components are separately packaged.

[0044] The quantitative negative pressure generating device 25 is set with a specific negative pressure value when it leaves the factory, so that the first collecting bottle 22 can extract 2 ml of amniotic fluid by default, and the second collecting bottle 23 can extract 30 ml of amniotic fluid by default. According to clinical needs, the doctor can also adjust the quantitative negative pressure generating device 25 to extract different amounts of amniotic fluid.

[0045] When in use, open the sealed bag, take out the puncture assembly 1, and after puncturing at the designated position, pull out the needle core 12 from the puncture needle 11, and then connect the inlet of the three-way connecting tube 21 to the connecting part 111 of the puncture needle 11.

[0046] The control valve 24 at the first outlet of the three-way connecting tube 21 is opened, and the amniotic fluid is sucked into the first collecting bottle 22. When the first collecting bottle 22 collects a predetermined amount, the control valve 24 at the first outlet is closed.

[0047] The control valve 24 at the second outlet is opened, and the amniotic fluid is sucked into the second collecting bottle 23. When the second collecting bottle 23 collects a predetermined amount, the control valve 24 at the second outlet is closed. The three-way connecting tube 21 is pulled out, and the assistant is responsible for removing the second collecting bottle 23, covering it with a specific cover, and sending it for inspection.

[0048] Finally, the puncture needle 11 is pulled out and the sampling is completed.

[0049] Embodiment 2

[0050] Different from the first embodiment, in order to reduce the number of reconnection steps in the operation, this embodiment adopts a newly designed puncture assembly 1, such as Figures 4 to 6 shown.

[0051] The puncture assembly 1 includes a needle seat 13, a puncture needle 11 and a needle core 12. One end of the needle seat 13 is fixedly connected to the puncture needle 11, and the other end is provided with an isolation plug 131. An inner cavity is formed in the middle of the needle seat 13. The needle core 12 can be detachably inserted into the needle seat 13 and the puncture needle 11. One end of the needle core 12 passes through the isolation plug 131 and passes out of the needle seat 13, and the other end passes through the end of the puncture needle 11 away from the needle seat 13. A connecting seat 132 is provided in the middle of the needle seat 13, which is connected to the inner cavity and is used to connect to the amniotic fluid collection assembly.

[0052] The needle core 12 is a solid structure, with a pointed tip at one end and an end seat 121 at the other end. The pointed end of the needle core 12 pierces the inner cavity of the needle seat 13 from the isolation plug 131 and comes out from the end of the puncture needle 11 away from the needle seat 13.

[0053] There is a clearance fit between the needle core 12 and the puncture needle 11, which facilitates the removal of the needle core 12 and prevents body fluid from entering the puncture needle 11 during the puncture process.

[0054] According to actual conditions, an extension portion for easy handholding may also be provided at the end seat 121 .

[0055] In addition, in order to simplify the components, the first collecting bottle 22 and the second collecting bottle 23 in the present embodiment are both negative pressure bottles with vacuum extracted in advance, which have a more streamlined structure and are more convenient to operate.

[0056] During the specific implementation, the sealing bag is opened, the two control valves 24 are switched to the cut-off state, the puncture assembly is firmly held by the extension portion on the end seat 132, and the protective cover outside the puncture needle 11 is removed, and the puncture operation can be started.

[0057] After the designated position is punctured, the needle core 12 is pulled out from the puncture needle 11 and the needle seat 13, and the isolation plug 131 plays a sealing role after the needle core 12 is pulled out. At this time, the puncture needle 11 and the connecting part 132 are connected through the inner cavity.

[0058] The first outlet of the three-way connecting tube 21 is connected to the first collecting bottle 22, and the control valve 24 at the first outlet of the three-way connecting tube 21 is opened, and the amniotic fluid is sucked into the first collecting bottle 22 under the negative pressure in the bottle.

[0059] When the first collecting bottle 22 collects a predetermined amount of liquid, the control valve 24 at the first outlet is closed.

[0060] The second outlet of the three-way connecting tube 21 is connected to the second collecting bottle 23, and the control valve 24 at the second outlet of the three-way connecting tube 21 is opened, and the amniotic fluid is sucked into the second collecting bottle 23 under the negative pressure in the bottle.

[0061] When the second collection bottle 23 collects a predetermined amount, the control valve 24 at the second outlet is closed. The three-way connecting tube 21 is pulled out, and the assistant is responsible for removing the second collection bottle 23, covering it with a specific cover, and sending it for inspection.

[0062] Finally, the puncture needle 11 is pulled out and the sampling is completed.

[0063] It should be noted that the parts not described in detail in this scheme are all prior art, and the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model fall within the protection scope of the present utility model.

Claims

1. A device for quantitatively collecting amniotic fluid under negative pressure, comprising a puncture assembly (1) and an amniotic fluid collection assembly, characterized in that: The puncture assembly (1) comprises a puncture needle (11) and a needle core (12); the puncture needle (11) is provided with a pointed tip at one end and a connecting portion (111) at the other end; the needle core (12) is removably inserted into the puncture needle (11); and one end of the needle core (12) is also provided with an end seat (121) for cooperating with the connecting portion (111) and sealing the connecting portion (111). The amniotic fluid collection assembly comprises a three-way connecting tube (21), a first collecting bottle (22) and a second collecting bottle (23); the inlet of the three-way connecting tube (21) is used to be connected to the connecting portion (111); the first outlet and the second outlet of the three-way connecting tube (21) are respectively connected to the first collecting bottle (22) and the second collecting bottle (23); the three-way connecting tube (21) is provided with a control valve (24) for controlling on and off at the first outlet and the second outlet; the first collecting bottle (22) and the second collecting bottle (23) are both provided with a quantitative negative pressure generating device (25) for generating a specific negative pressure in the bottle.

2. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 1, characterized in that: There is a clearance fit between the needle core (12) and the puncture needle (11), which facilitates the removal of the needle core (12) and prevents body fluid from entering the puncture needle (11) during the puncture process.

3. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 1, characterized in that: The first collecting bottle (22) and the second collecting bottle (23) both comprise a bottle body and a bottle stopper, the bottle stopper is connected to the bottle body via a thread, and the first outlet and the second outlet are both connected to the bottle body via the bottle stopper.

4. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 3, characterized in that: The quantitative negative pressure generating device (25) is connected to the bottle body via a bottle stopper, and the quantitative negative pressure generating device (25) can be set to a specific negative pressure to obtain a corresponding amount of amniotic fluid.

5. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 3, characterized in that: There is a scale on the bottle to determine the amount of amniotic fluid collected.

6. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 1, characterized in that: The three-way connecting tube (21) is provided with a pressure sensing alarm (26) at the inlet, which is used to sound an alarm when the puncture needle (11) is blocked, so as to remind the doctor to adjust the position of the puncture needle (11) in time.

7. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 1, characterized in that: The capacity of the first collection bottle (22) is no more than 10 ml and is used to collect amniotic fluid mixed with maternal cells in the early stage. The capacity of the second collection bottle (23) is no more than 50 ml and is used to collect amniotic fluid to be tested.

8. A device for quantitatively collecting amniotic fluid under negative pressure as claimed in claim 1, characterized in that: The puncture assembly (1), the three-way connecting tube (21), the first collecting bottle (22), the second collecting bottle (23), and the quantitative negative pressure generating device (25) are all detachably connected and are sterilized, assembled, and packaged independently.

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