CN218978992U - Negative pressure test tube amniotic fluid puncture collection device - Google Patents

Abstract

The utility model discloses a negative pressure test tube amniotic fluid puncturing and collecting device which comprises a PTC puncturing needle, an amniotic fluid suction tube and a negative pressure test tube, wherein the liquid inlet end of the amniotic fluid suction tube is detachably connected with the liquid outlet end of the PTC puncturing needle, and the liquid outlet end of the amniotic fluid suction tube is provided with a needling plug. The negative pressure test tube comprises a tube body, a bottle mouth plug arranged at the liquid inlet end of the tube body and an end cover covering the bottle mouth plug, wherein the tube body comprises a straight tube part and a conical part for dust accumulation, the bottle mouth plug comprises an annular hard plastic fixing block, an inner silica gel layer formed at the annular center of the annular hard plastic fixing block and an outer silica gel layer coated on the annular hard plastic fixing block and the inner silica gel layer, the side part of the outer silica gel layer is propped against the inner wall of the tube body, an opening corresponding to the annular center of the annular hard plastic fixing block is formed in the end cover, and the needle punching plug can be inserted through the inner silica gel layer to be communicated with the negative pressure test tube. The advantages are that: the method is convenient for accurately observing and completely extracting the required ions. The inward shrinkage deformation of the pipe body in the centrifugal process can be effectively prevented.

Description

Negative pressure test tube amniotic fluid puncture collection device

Technical Field

The utility model relates to the field of amniotic fluid puncture equipment, in particular to a negative pressure test tube amniotic fluid puncture collecting device.

Background

Amniotic fluid puncture, which is an examination method for prenatal diagnosis, is generally suitable for prenatal diagnosis of middle-term pregnancy. Amniotic fluid exists in the amniotic cavity; the fertilized ovum forms an amniotic cavity on the seventh day of fertilization, amniotic fluid starts to be produced, the amniotic fluid volume is 50 ml at 12 weeks of gestation, 400 ml at 20 weeks, and 1000-1500 ml at 36-38 weeks, and the amniotic fluid volume is slightly reduced near the expected period.

The traditional negative pressure amniotic fluid puncture comprises a PTC puncture needle, a amniotic fluid suction tube and a negative pressure test tube, wherein the PTC puncture needle is used for guiding amniotic fluid in a pregnant woman into the negative pressure test tube along the amniotic fluid suction tube. The existing negative pressure amniotic fluid puncture has the following problems: the negative pressure test tube is a round groove type at the bottom, after amniotic fluid is centrifuged, substances to be analyzed are deposited at the bottom of the round groove type, and the required materials cannot be completely extracted in the extracting process. Secondly, because the negative pressure test tube needs to ensure negative pressure, a soft rubber plug is arranged at the pipe orifice of the centrifuge tube, and the centrifuge tube made of plastic is not easy to deform inwards at the pipe orifice of the centrifuge tube due to insufficient strength in the high-speed rotation process of the centrifuge tube in the centrifugation process.

In view of this, it is necessary to provide a negative pressure test tube amniotic fluid puncture collection device.

Disclosure of Invention

The utility model provides a carbon-adding deoxidization type nitrogen purification device, which effectively solves the problem that the purity of the existing nitrogen is not high.

The technical scheme adopted by the utility model is as follows:

the utility model provides a negative pressure test tube amniotic fluid puncture collection device, includes PTC pjncture needle, amniotic fluid straw and negative pressure test tube, the feed liquor end and the play liquid end of PTC pjncture needle of amniotic fluid straw can be dismantled and be connected, the play liquid end of amniotic fluid straw is provided with the acupuncture plug. The negative pressure test tube comprises a tube body, a bottle mouth plug arranged at the liquid inlet end of the tube body and an end cover covering the bottle mouth plug, wherein the tube body comprises a straight tube part and a conical part for dust accumulation, the bottle mouth plug comprises an annular hard plastic fixing block, an inner silica gel layer formed at the annular center of the annular hard plastic fixing block and an outer silica gel layer coated on the annular hard plastic fixing block and the inner silica gel layer, the side part of the outer silica gel layer is propped against the inner wall of the tube body, an opening corresponding to the annular center of the annular hard plastic fixing block is formed in the end cover, and the acupuncture plug can be inserted through the inner silica gel layer to be communicated with the negative pressure test tube.

Further is: the outer wall of the negative pressure test tube is provided with capacity scale marks.

Further is: the end cover, cyclic annular stereoplasm plastic fixed block, interior silica gel layer and outer silica gel layer integrated into one piece, the end cover is provided with the internal thread, be provided with the external screw thread with the internal thread adaptation on the body, end cover and body threaded connection.

Further is: the PTC puncture needle comprises a puncture needle and a needle sleeve for covering the puncture needle.

Further is: the amniotic fluid suction tube is provided with a flow stopping clamp.

Further is: the pipe body outside cover is equipped with transparent plastic pipe cover, the pipe cover includes integrated into one piece's straight barrel cover and toper cover, be provided with the arch that offsets with toper cover lower extreme on the toper portion.

The utility model has the beneficial effects that:

1. the bottom of the negative pressure test tube is set to be the conical part, and the deposition of ions can be facilitated by utilizing the conical structure of the conical part after the centrifugation is finished, so that medical staff can accurately observe and completely extract required ions. Through setting up cyclic annular stereoplasm plastic fixed block, when guaranteeing that acupuncture plug can insert negative pressure test tube, utilize the stereoplasm of cyclic annular stereoplasm plastic fixed block can effectually prevent the pipe body in the inward shrinkage deformation of centrifugation in-process.

2. The pipe body can be effectively prevented from being deformed outwards in the centrifugal process through the transparent plastic pipe sleeve.

Drawings

Fig. 1 is an overall schematic diagram of a negative pressure test tube amniotic fluid puncture collection device according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a negative pressure test tube amniotic fluid puncture collection device according to an embodiment of the present application.

Fig. 3 is a schematic structural view of an end cap and a bottle plug of a negative pressure test tube amniotic fluid puncture collection device according to an embodiment of the present application.

Fig. 4 is a schematic structural view of a bottleneck plug of a negative pressure test tube amniotic fluid puncture collecting device according to an embodiment of the present application.

Marked in the figure as: 1. PTC puncture needle; 2. amniotic fluid suction tube; 3. a negative pressure test tube; 4. needling the plug; 31. a tube body; 32. a bottle plug; 33. an end cap; 311. a straight tube portion; 312. a tapered portion; 321. an annular hard plastic fixed block; 322. an inner silica gel layer; 323. an outer silicone layer; 330. an opening; 34. scale marks; 11. a puncture needle; 12. a needle sleeve; 5. a flow stop clip; 6. a transparent plastic tube sleeve; 61. a straight sleeve; 62. a conical sleeve; 313. a protrusion;

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, a negative pressure test tube 3 amniotic fluid puncture collection device provided by the embodiment of the application, its structure includes PTC pjncture needle 1, amniotic fluid straw 2 and negative pressure test tube 3, the liquid inlet end of amniotic fluid straw 2 is connected with the liquid outlet end of PTC pjncture needle 1 can be dismantled, the liquid outlet end of amniotic fluid straw 2 is provided with acupuncture plug 4, negative pressure test tube 3 includes body 31, sets up bottleneck stopper 32 and the end cover 33 that covers bottleneck stopper 32 at the liquid inlet end of body 31, body 31 includes straight section 311 and is used for the toper portion 312 of laying dust, bottleneck stopper 32 includes cyclic annular stereoplasm plastic fixed block 321, the interior silica gel layer 322 of shaping in the ring center department of cyclic annular stereoplasm plastic fixed block 321 and the outer silica gel layer 323 cladding on cyclic annular stereoplasm plastic fixed block 321 and interior silica gel layer 322, outer silica gel layer 323 lateral part offsets with body 31 inner wall, be provided with on the end cover 33 with the opening that corresponds with cyclic annular stereoplasm fixed block 321's ring center, can lead to the negative pressure plug 3 with the test tube and insert the inner pressure plug 322.

It should be noted that less material is required for centrifugation after amniotic fluid collection.

In actual use, the needling plug 4 is inserted through the inner silica gel layer 322, the PTC puncture needle 1 sucks amniotic fluid, the amniotic fluid flows into the negative pressure test tube 3 along the amniotic fluid suction tube 2, and the needling plug 4 is pulled out after sampling is finished. The healthcare worker then feeds the negative pressure tube 3 containing amniotic fluid into a centrifuge for centrifugation so that the desired ions are deposited in the conical portion 312. When the pipe body 31 is centrifuged, the pipe body 31 is subjected to centrifugal force, force which enables the pipe body 31 to shrink inwards is generated, and the hard plastic fixing block can apply horizontal acting force to the pipe body 31.

In the above design, the bottom of the negative pressure test tube 3 is set to be the conical part 312, and the deposition of ions can be facilitated by utilizing the conical structure of the conical part 312 after the centrifugation is finished, so that medical staff can accurately observe and completely extract the required ions. Through setting up cyclic annular stereoplasm plastic fixed block 321, when guaranteeing that acupuncture plug 4 can insert negative pressure test tube 3, utilize cyclic annular stereoplasm plastic fixed block 321's hardness can effectually prevent the inward shrinkage deformation of body 31 in the centrifugation in-process.

Specifically: as shown in fig. 1, the outer wall of the negative pressure test tube 3 is provided with capacity graduation marks 34.

In the design, medical staff can observe the content of each layer of substances after centrifugal liquid separation.

Specifically: as shown in fig. 3 and 4, the end cover 33, the annular hard plastic fixing block 321, the inner silica gel layer 322 and the outer silica gel layer 323 are integrally formed, the end cover 33 is provided with an internal thread, the pipe body 31 is provided with an external thread adapted to the internal thread, and the end cover 33 is in threaded connection with the pipe body 31.

During assembly, the end cover 33 is screwed on the pipe body 31, and in the screwing process, the contact area between the outer layer silica gel and the inner wall of the pipe body 31 is gradually increased.

In the above design, the connection of the negative pressure test tube 3 during centrifugation can be ensured by connecting the end cover 33 with the tube body 31 in a threaded manner, and the tightness of the bottle mouth plug 32 can be ensured by integrally forming the end cover 33, the annular hard plastic fixing block 321, the inner silica gel layer 322 and the outer silica gel layer 323, so that the firmness of the bottle mouth plug 32 and the end cover 33 can be ensured.

Specifically: as shown in fig. 1, the PTC puncture needle 1 includes a puncture needle 11 and a needle sheath 12 for covering the puncture needle 11.

When in actual use, when the operation of sucking amniotic fluid is needed, the needle sleeve 12 is pulled out, and after the completion of sucking amniotic fluid, the needle sleeve 12 is sleeved on the puncture needle 11 again and is put into the corresponding medical waste article accommodating device.

In the design, the sterile environment of the puncture needle 11 can be effectively ensured, and patients and medical staff are protected.

Specifically: as shown in fig. 1, the amniotic fluid suction tube 2 is provided with a flow stopping clip 5.

During actual use, the needling plug 4 is inserted into the negative pressure test tube 3, at the moment, the medical staff pinch the flow stopping clamp 5 by one hand, so that the amniotic fluid suction tube 2 is closed, the PTC puncture needle 1 is inserted into a pregnant woman by the other hand, then the flow stopping clamp 5 is loosened, and amniotic fluid is extracted by utilizing the negative pressure of the negative pressure test tube 3.

In the design, the operation of medical staff is convenient, so that absolute safety is ensured for pregnant women in the amniotic fluid sucking process.

Specifically: as shown in fig. 1 and 2, the outer side of the pipe body 31 is sleeved with a transparent plastic pipe sleeve 6, the pipe sleeve comprises a straight cylinder sleeve 61 and a conical sleeve 62 which are integrally formed, and a protrusion 313 which abuts against the lower end of the conical sleeve 62 is arranged on the conical portion 312.

The length of the straight sleeve 61 is smaller than the length of the straight portion 311, and the length of the tapered sleeve 62 is smaller than the length of the tapered portion 312.

In actual use, after the negative pressure test tube 3 absorbs amniotic fluid and the needling plug 4 is pulled out, the transparent plastic tube sleeve 6 is sleeved on the outer wall of the tube body 31, so that the inner wall of the transparent plastic tube sleeve 6 is contacted with the outer wall of the tube body 31, and the lower end of the conical sleeve 62 is contacted with the upper end of the protrusion 313.

In the above design, the pipe body 31 can be effectively prevented from being deformed outwards in the centrifugal process by the transparent plastic pipe sleeve 6.

It should be understood that the foregoing description is only illustrative of the present utility model and is not intended to limit the utility model to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims (6)

1. The utility model provides a negative pressure test tube amniotic fluid puncture collection device, includes PTC pjncture needle (1), amniotic fluid straw (2) and negative pressure test tube (3), the liquid inlet end of amniotic fluid straw (2) can be dismantled with the play liquid end of PTC pjncture needle (1) and be connected, the play liquid end of amniotic fluid straw (2) is provided with acupuncture plug (4), its characterized in that: negative pressure test tube (3) include body (31), set up bottleneck stopper (32) and cover end cover (33) of bottleneck stopper (32) at the feed liquor end of body (31), body (31) are including straight section of thick bamboo portion (311) and be used for conical part (312) of laying dust, bottleneck stopper (32) are including cyclic annular stereoplasm plastic fixed block (321), shaping in interior silica gel layer (322) of cyclic annular stereoplasm plastic fixed block (321) ring center department and cladding outside silica gel layer (323) on cyclic annular stereoplasm plastic fixed block (321) and interior silica gel layer (322), outside silica gel layer (323) lateral part offsets with body (31) inner wall, be provided with opening (330) that correspond with the ring center of cyclic annular stereoplasm plastic fixed block (321) on end cover (33), acupuncture plug (4) can insert interior silica gel layer (322) and lead to with negative pressure test tube (3).

2. The negative pressure test tube amniotic fluid puncture collection device according to claim 1, wherein: the outer wall of the negative pressure test tube (3) is provided with capacity scale marks (34).

3. The negative pressure test tube amniotic fluid puncture collection device according to claim 1, wherein: the end cover (33), the annular hard plastic fixed block (321), the inner silica gel layer (322) and the outer silica gel layer (323) are integrally formed, the end cover (33) is provided with internal threads, the pipe body (31) is provided with external threads matched with the internal threads, and the end cover (33) is in threaded connection with the pipe body (31).

4. The negative pressure test tube amniotic fluid puncture collection device according to claim 1, wherein: the PTC puncture needle (1) comprises a puncture needle (11) and a needle sleeve (12) for covering the puncture needle (11).

5. The negative pressure test tube amniotic fluid puncture collection device according to claim 1, wherein: a flow stopping clamp (5) is clamped on the amniotic fluid suction tube (2).

6. The negative pressure test tube amniotic fluid puncture collection device according to claim 1, wherein: the pipe body (31) outside cover is equipped with transparent plastic pipe cover (6), the pipe cover includes integrated into one piece's straight barrel cover (61) and toper cover (62), be provided with on toper portion (312) with toper cover (62) lower extreme offset protruding (313).

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