CN209644958U - A kind of amniocentesis needle assemblies - Google Patents
A kind of amniocentesis needle assemblies Download PDFInfo
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- CN209644958U CN209644958U CN201920016732.8U CN201920016732U CN209644958U CN 209644958 U CN209644958 U CN 209644958U CN 201920016732 U CN201920016732 U CN 201920016732U CN 209644958 U CN209644958 U CN 209644958U
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- vacuum collecting
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- amniocentesis
- needle assemblies
- collecting pipe
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Abstract
The utility model belongs to amniocentesis the field of medical instrument technology, discloses a kind of amniocentesis needle assemblies, including mutually matched puncture component and vacuum collecting pipe；Puncture component includes sequentially connected puncture adapter, the first hose and bifurcated three-way connection；Vacuum collecting pipe includes the first vacuum collecting interconnected portion and the second vacuum collecting portion, and two outlets of bifurcated three-way connection are detachably connected to the first vacuum collecting portion and the second vacuum collecting portion respectively.Utility model has the advantages that passing through one vacuum collecting pipe of setting, it is aspirated using negative pressure, avoid the hand wobble because of operator in aspiration procedure, syringe and stab artificially connect built on the sand, and the malpractice of the excessive initiation of negative-pressure ward strength, bifurcated three-way connection can be directly separated the amniotic fluid containing mother cell simultaneously, it avoids and replaces medical instrument in amniocentesis surgical procedure, the accuracy and working efficiency for improving detection further decrease the risk of amniocentesis operation.
Description
Technical field
The utility model belongs to amniocentesis the field of medical instrument technology, and in particular to a kind of amniocentesis needle assemblies.
Background technique
Amniocentesis is most common invasion pre-natal diagnosis technology in current pre-natal diagnosis clinical manipulation.Doctor can
With the free cell for obtaining the skin, intestines and stomach and the urinary tract etc. of fetus by extracting amniotic fluid, using these free cells into one
Whether the chromosome of step analysis fetus is abnormal.The operation is generally in 16~22 weeks Shi Jinhang, live cell fraction ratio in amniotic fluid at this time
It is higher.Extracting amniotic fluid is mainly to analyze the genome of fetus at wherein most important and common is exactly Down syndrome.It is common
Single-gene disorder, such as thalassemia, hemophilia, phenylketonuria, spinal muscular atrophy can pass through and examine fetus amniotic fluid
Cell DNA is diagnosed；In addition, fetal neural tube significant deficiency, such as spina bifida, meninx bulging, acromphalus and stomach wall split,
More accurately reference value can also be obtained by checking the A type fetoprotein in amniotic fluid；Moreover, amniotic fluid also provides life
Compound matter index understands fetus lung maturity, and whether there is or not the indexs such as in utero virus infection for acquisition.With national two child's policies
Guidance, elderly parturient women be in explosive growth, relative to of the right age puerpera, elderly parturient women give birth to chromosome abnormality infant risk it is big
Big to increase, wherein trisomy 21 ratio obviously increases, and amniocentesis acts on Women with Advanced Maternal Age fetal chromosomal pre-natal diagnosis huge.Together
When the fetus of color ultrasound exception is confirmed by it whether there is or not chromosomes and is different by amniocentesis with the development of color ultrasound Imaging Technology
Often, for whether can continue gestation observation it is significant.Therefore, amniocentesis is as one of the important means of pre-natal diagnosis,
At present using extremely wide.
Currently, amniocentesis clinically mainly passes through after amniocentesis pin puncture enters amniotic cavity, then with injecting
Device aspirates 25-30mL, diagnoses and examines for follow-up clinical.Accounting for about 0.1% to 0.5% pregnant woman can occur and amniocentesis
The related miscarriage of art process, bleeding and infection.Occur abnormal symptom once in puncture process or after puncturing and especially miscarry, it is pregnant
Woman and its family members can be extremely nervous, have bad feedback even for the selection that surrounding needs to be the pregnant woman of amniocentesis,
Connecing causes inevitable birth defect to occur, and is all huge negative effect to family and society, and amniocentesis pair
Experience and the working specification requirement for operating doctor are extremely stringent, moreover various regions pre-natal diagnosis center needs amniocentesis pre-natal diagnosis
Number obviously rise year by year, workload obviously increases, however the component of current amniocentesis can not cope with well it is above-mentioned
Situation has following defects that
(1) it needs to be aspirated with syringe, and needs replacing syringe 3-4 times: in aspiration procedure, once doctor holds
The hand of syringe shakes, then easily causes entry into the intracorporal syringe needle of puerpera and shake, especially in the puncture space for comparing limitation
It may cause and puncture amniotic fluid failure, amniotic fluid can not be extracted out, perhaps stab fetus or be punctured to mesometrium induction uterine contraction
Cause to miscarry, and if pumping velocity grasp improper, it is excessive to also result in pressure change in maternal uterine, causes unnecessary doctor
Treatment accident, such as amniotic fluid embolism；
(2) in puncture process, it first just may contain mother cell in 2~3 milliliters of amniotic fluid of suction, be easy to cause mother
Blood stains dye, it is inaccurate to lead to diagnostic result, therefore 2~3 milliliters of the amniotic fluid first aspirated requires to abandon, and relates to again in the process
And to syringe problem is changed, instrument is replaced at this time, the intracorporal syringe needle of pregnant woman is easily caused to shake, reduce working efficiency.
Therefore, it is badly in need of developing a kind of avoidable suction and the amniocentesis component without replacing instrument halfway.
Utility model content
In order to solve the above problems existing in the present technology, the utility model aim is to provide a kind of avoidable hand
Suction and the amniocentesis needle assemblies for not having to midway replacement instrument.
The technology employed by the present utility model is
The utility model provides a kind of amniocentesis needle assemblies, including mutually matched puncture component and vacuum collecting pipe；
The puncture component includes puncturing adapter, the first hose and bifurcated three-way connection, the puncture adapter and first hose
One end be connected, the entrance of the bifurcated three-way connection is connected with the other end of first hose；The bifurcated three-way connection
Outlet include first outlet and second outlet, the second outlet is arranged in above the first outlet of the bifurcated three-way connection
Side wall on, the second outlet is folded upward at relative to the first outlet, and the first outlet is provided with the first collection portion
Puncturing head, the second outlet of the bifurcated three-way connection are provided with the second collection portion puncturing head；The vacuum collecting pipe includes phase
The the first vacuum collecting portion and the second vacuum collecting portion to connect, the first collection portion puncturing head can puncture the first vacuum collecting
The upper wall in portion, the second collection portion puncturing head can puncture the side wall in the second vacuum collecting portion.
Preferably, above-mentioned amniocentesis needle assemblies are provided with check valve at the first outlet.
Preferably, above-mentioned amniocentesis needle assemblies, the puncture adapter include elastic sealing ring and rigid plastics end,
The elastic sealing ring is arranged on the lateral wall of the rigid plastics end.
Preferably, above-mentioned amniocentesis needle assemblies further include the second hose, and the second collection portion puncturing head passes through described
Second hose is connected with the second outlet.
Preferably, above-mentioned amniocentesis needle assemblies are provided with flow regulator on first hose.
Preferably, above-mentioned amniocentesis needle assemblies, second vacuum collecting portion include the second vacuum collecting pipe of connection
And first connecting portion, the first connecting portion are telescopic rubber bellows, the upper end of the first connecting portion and described first
Vacuum collecting portion is tightly connected, the lower end of the first connecting portion and the second vacuum collecting pipe airtight connection.
Preferably, above-mentioned amniocentesis needle assemblies are also set between the first connecting portion and the second vacuum collecting pipe
It is equipped with second connecting portion, the upper end sealed connection of the lower end of the first connecting portion and the second connecting portion, described first is true
It is provided with fixing sleeve on the lateral wall of empty collection portion, fixed lobe is provided on the lateral wall of the second connecting portion, it is described solid
Fixed set can cover on the fixed lobe.
Preferably, above-mentioned amniocentesis needle assemblies, the lower end of the second connecting portion and the second vacuum collecting pipe spiral shell
Line cooperation.
Preferably, above-mentioned amniocentesis needle assemblies, the second vacuum collecting pipe are 50mL centrifuge tube.
The utility model has the following beneficial effects:
By the way that a vacuum collecting pipe is arranged, is aspirated, avoided because syringe and stab are artificial using negative pressure
Connection built on the sand and the malpractice of the excessive initiation of negative-pressure ward strength, reduces the risk of amniocentesis operation；Pass through setting
One bifurcated three-way connection, so that the amniotic fluid containing mother cell flowed out in advance flows into the first vacuum collecting portion from first outlet,
After the first vacuum collecting portion is collected completely, amniotic fluid automatically flows into the second vacuum collecting portion from second outlet, can be directly separated containing mother
The amniotic fluid of body cell avoids and replaces medical instrument in amniocentesis surgical procedure, improves detection accuracy and working efficiency,
Further decrease the risk of amniocentesis operation.
By the way that check valve is arranged in first outlet, so that the amniotic fluid into the first vacuum collecting portion will not backflow into second
Vacuum collecting portion avoids polluting.
The second collection portion puncturing head and second outlet are connected by the second hose, wearing for the second collection portion puncturing head can be facilitated
Thorn, it is more convenient to use to cope with more service conditions.
By the way that flow regulator is arranged, the flow velocity of amniotic fluid is adjusted, is avoided because of the medical thing of the excessive appearance of intrauterine external pressure difference
Therefore.
Since telescopic rubber bellows are arranged, when in the second vacuum collecting pipe vacuum degree deficiency to draw 30mL amniotic fluid
When, it can increase negative pressure by adjusting telescopic rubber bellows, continue to draw amniotic fluid.
Since the second vacuum collecting pipe is threadedly engaged with second connecting portion, after having aspirated amniotic fluid, second can be directly removed
Vacuum collecting pipe, facilitates subsequent detection.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the puncture component of the amniocentesis needle assemblies of the utility model；
Fig. 2 is the structural schematic diagram of the vacuum collecting pipe of the amniocentesis needle assemblies of the utility model；
Fig. 3 is the structural schematic diagram of the puncture adapter of the amniocentesis needle assemblies of the utility model；
Fig. 4 is the schematic cross-section of the puncture adapter of the amniocentesis needle assemblies of the utility model；
Fig. 5 is the second connecting portion of the amniocentesis needle assemblies of the utility model and the connection signal of the second vacuum collecting pipe
Figure.
In figure: 1, puncture component；11, adapter is punctured；111, elastic sealing ring；112, rigid plastics end；12, first is soft
Pipe；13, flow regulator；14, bifurcated three-way connection；141, check valve；15, the first collection portion puncturing head；16, the second collection portion
Puncturing head；17, the second hose；2, vacuum collecting pipe；21, the first vacuum collecting portion；211, fixing sleeve；22, first connecting portion；
23, second connecting portion；231, fixed lobe；24, the second vacuum collecting pipe.
Specific embodiment
With reference to the accompanying drawing and specific embodiment is further elaborated the utility model.
Embodiment 1
As shown in Fig. 1,3 and 4, a kind of amniocentesis needle assemblies, including mutually matched puncture component 1 are present embodiments provided
With vacuum collecting pipe 2；The puncture component 1 includes puncturing adapter 11, the first hose 12 and bifurcated three-way connection 14, the puncture
Adapter 11 is connected with one end of first hose 12, the entrance of the bifurcated three-way connection 14 and first hose 12
The other end is connected；The outlet of the bifurcated three-way connection 14 includes first outlet and second outlet, and the second outlet setting exists
On side wall above the first outlet of the bifurcated three-way connection 14, the second outlet is bent up relative to the first outlet
Folding, the first outlet are provided with the first collection portion puncturing head 15, and the second outlet of the bifurcated three-way connection 14 is provided with the
Two collection portion puncturing heads 16；The vacuum collecting pipe 2 includes the first vacuum collecting interconnected portion 21 and the second vacuum collecting
Portion, the first collection portion puncturing head 15 can puncture the upper wall in the first vacuum collecting portion 21, the second collection portion puncturing head 16
The side wall in the second vacuum collecting portion can be punctured.
Preferably, above-mentioned amniocentesis needle assemblies are provided with check valve 141 at the first outlet.
Preferably, above-mentioned amniocentesis needle assemblies further include the second hose 17, and the second collection portion puncturing head 16 passes through
Second hose 17 is connected with the second outlet.
Preferably, above-mentioned amniocentesis needle assemblies are provided with flow regulator 13 on first hose 12.
Embodiment 2
As shown in Figs. 1-5, a kind of amniocentesis needle assemblies, including 1 He of mutually matched puncture component are present embodiments provided
Vacuum collecting pipe 2；The puncture component 1 includes puncturing adapter 11, the first hose 12 and bifurcated three-way connection 14, the puncture needle
Connector 11 is connected with one end of first hose 12, and the entrance of the bifurcated three-way connection 14 is another with first hose 12
One end is connected；The outlet of the bifurcated three-way connection 14 includes first outlet and second outlet, and the second outlet is arranged in institute
It states on the side wall above the first outlet of bifurcated three-way connection 14, the second outlet is bent up relative to the first outlet
Folding, the first outlet are provided with the first collection portion puncturing head 15, and the second outlet of the bifurcated three-way connection 14 is provided with the
Two collection portion puncturing heads 16；The vacuum collecting pipe 2 includes the first vacuum collecting interconnected portion 21 and the second vacuum collecting
Portion, the first collection portion puncturing head 15 can puncture the upper wall in the first vacuum collecting portion 21, the second collection portion puncturing head 16
The side wall in the second vacuum collecting portion can be punctured.
Preferably, above-mentioned amniocentesis needle assemblies are provided with check valve 141 at the first outlet.
Preferably, above-mentioned amniocentesis needle assemblies further include the second hose 17, and the second collection portion puncturing head 16 passes through
Second hose 17 is connected with the second outlet.
Preferably, above-mentioned amniocentesis needle assemblies, the puncture adapter 11 include elastic sealing ring 111 and rigid plastics
End 112, the elastic sealing ring 111 are arranged on the lateral wall of the rigid plastics end 112.Elastic sealing ring 111
Cross-sectional view is as shown in figure 4, for arc.
Preferably, above-mentioned amniocentesis needle assemblies are provided with flow regulator 13 on first hose 12.
Preferably, above-mentioned amniocentesis needle assemblies, second vacuum collecting portion include the second vacuum collecting pipe of connection
24 and first connecting portion 22, the first connecting portion 22 is telescopic rubber bellows, the upper end of the first connecting portion 22 with
First vacuum collecting portion 21 is tightly connected, and the lower end of the first connecting portion 22 and the second vacuum collecting pipe 24 are closed
Connection；Fixing sleeve 211 is provided on the lateral wall in first vacuum collecting portion 21, on the lateral wall of the second connecting portion 23
It is provided with fixed lobe 231, the fixing sleeve 211 can cover on the fixed lobe 231.
Preferably, above-mentioned amniocentesis needle assemblies, between the first connecting portion 22 and the second vacuum collecting pipe 24
It is additionally provided with second connecting portion 23, the lower end of the first connecting portion 22 and the upper end of the second connecting portion 23 are tightly connected,
The lower end of the second connecting portion 23 is threadedly engaged with the second vacuum collecting pipe 24.
Preferably, above-mentioned amniocentesis needle assemblies, the second vacuum collecting pipe are 50mL centrifuge tube.
The application method of amniocentesis needle assemblies provided by the utility model is as follows:
(1) it is punctured in advance using existing amniocentesis needle capturing position, extracts needle core after determining position；
(2) adapter 11 will be punctured to connect with the connector of the casing of existing amniocentesis needle, elastic sealing ring 111 wraps up
Firmly on the outside of the connector of the casing of existing amniocentesis needle, make the two close fit；
(3) the first collection portion puncturing head 15 is pierced into the first collection portion 1, amniotic fluid flows into the first vacuum with the first hose 12 and receives
Collection portion 21；
(4) after the first collection portion is collected completely, the second collection portion puncturing head 16 is pierced into first connecting portion, amniotic fluid directly flows
Enter the second vacuum collecting pipe 24；
After (5) second collection portions are collected completely, the first collection portion puncturing head 15 and the second collection portion puncturing head 16 are extracted, is screwed off
Second vacuum collecting pipe 24, closes the lid, and carries out subsequent operation.
The principle of amniocentesis needle assemblies provided by the utility model is as follows:
(1) it is matched due to puncturing adapter 11 with the connector of existing amniocentesis needle cannula, while elastic sealing ring
111 can perfect package amniocentesis needle casing connector, both make close fit；
(2) vacuum is initially in vacuum collecting pipe 2 and be made of clear material, the second outlet of the divergent ends of drainage tube
It is folded upward at, amniotic fluid will not enter the second vacuum collecting pipe 24 before filling the first vacuum collecting portion 21；
(3) first collection portion volume 2-3ml, can be used for collecting the amniotic fluid containing mother cell flowed out in advance；To first
After vacuum collecting portion is collected completely, it is substantially free of mother cell in amniotic fluid, has been directly entered the second vacuum collecting pipe 24, the second vacuum
Collecting pipe 24 can be rotated from second connecting portion 23, directly matched, be directly entered with the pipe lid of existing 50mL centrifuge tube
Subsequent operation；
It (4), can when the negative pressure in the second vacuum collecting pipe 24 is not enough to draw 30mL amniotic fluid if during collection
Fixing sleeve 211 to be removed, first connecting portion 22 restores its original length, and the overall volume in the second vacuum collecting portion increases, in
Pressure reduces, and can continue to flow into amniotic fluid；
Be provided with flow regulator 13 on (5) first hoses, negative pressure absorbing amniotic fluid it is any during, can pass through stream
Fast adjuster 13 controls the flow velocity of amniotic fluid, prevents from amniotic cavity causing pregnant woman with the pressure difference in vacuum collecting pipe 2 away from excessive
Injury.
The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model
Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted
The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.
Claims (9)
1. a kind of amniocentesis needle assemblies, it is characterised in that:
Including mutually matched puncture component (1) and vacuum collecting pipe (2)；
The puncture component (1) includes puncturing adapter (11), the first hose (12) and bifurcated three-way connection (14), the puncture needle
Connector (11) is connected with one end of first hose (12), the entrance and first hose of the bifurcated three-way connection (14)
(12) the other end is connected；
The outlet of the bifurcated three-way connection (14) includes first outlet and second outlet, and the second outlet is arranged at described point
It pitches on the side wall above the first outlet of three-way connection (14), the second outlet is folded upward at relative to the first outlet,
The first outlet is provided with the first collection portion puncturing head (15), and the second outlet of the bifurcated three-way connection (14) is provided with
Two collection portion puncturing heads (16)；
The vacuum collecting pipe (2) includes the first vacuum collecting interconnected portion (21) and the second vacuum collecting portion, and described
One collection portion puncturing head (15) can puncture the upper wall in the first vacuum collecting portion (21), and the second collection portion puncturing head (16) can pierce
The side wall in broken second vacuum collecting portion.
2. amniocentesis needle assemblies according to claim 1, it is characterised in that: be provided with check valve at the first outlet
(141)。
3. amniocentesis needle assemblies according to claim 2, it is characterised in that: the puncture adapter (11) includes elasticity
Sealing ring (111) and rigid plastics end (112), the elastic sealing ring (111) are arranged in the rigid plastics end (112)
Lateral wall on.
4. amniocentesis needle assemblies according to claim 3, it is characterised in that: it further include the second hose (17), described
Two collection portion puncturing heads (16) are connected by second hose (17) with the second outlet.
5. amniocentesis needle assemblies according to claim 3, it is characterised in that: be provided with stream on first hose (12)
Fast adjuster (13).
6. amniocentesis needle assemblies described in -5 any one according to claim 1, it is characterised in that: second vacuum collecting
Portion includes the second vacuum collecting pipe (24) and first connecting portion (22) of connection, and the first connecting portion (22) is telescopic rubber
Bellows, the upper end and first vacuum collecting portion (21) of the first connecting portion (22) are tightly connected, first connection
The lower end in portion (22) and the second vacuum collecting pipe (24) airtight connection.
7. amniocentesis needle assemblies according to claim 6, it is characterised in that:
It is additionally provided with second connecting portion (23) between the first connecting portion (22) and the second vacuum collecting pipe (24), it is described
The lower end of first connecting portion (22) and the upper end of the second connecting portion (23) are tightly connected；
It is provided on the lateral wall in first vacuum collecting portion (21) fixing sleeve (211), outside the second connecting portion (23)
It is provided on side wall fixed lobe (231), the fixing sleeve (211) can cover on the fixed lobe (231).
8. amniocentesis needle assemblies according to claim 7, it is characterised in that: the lower end of the second connecting portion (23) with
The second vacuum collecting pipe (24) is threadedly engaged.
9. amniocentesis needle assemblies according to claim 8, it is characterised in that: the second vacuum collecting pipe (24) is
50mL centrifuge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920016732.8U CN209644958U (en) | 2019-01-04 | 2019-01-04 | A kind of amniocentesis needle assemblies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920016732.8U CN209644958U (en) | 2019-01-04 | 2019-01-04 | A kind of amniocentesis needle assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209644958U true CN209644958U (en) | 2019-11-19 |
Family
ID=68520413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920016732.8U Active CN209644958U (en) | 2019-01-04 | 2019-01-04 | A kind of amniocentesis needle assemblies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209644958U (en) |
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2019
- 2019-01-04 CN CN201920016732.8U patent/CN209644958U/en active Active
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