CN210144675U

CN210144675U - Negative pressure formula amniotic fluid collection system

Info

Publication number: CN210144675U
Application number: CN201821107819.8U
Authority: CN
Inventors: 欧水英; 陈汝芳; 吴秀娥; 陈春霞; 王桂英; 康颖旎; 黄淑瑜; 温素芬
Original assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Current assignee: Foshan First Peoples Hospital Foshan Hospital Sun Yat Sen University
Priority date: 2018-07-12
Filing date: 2018-07-12
Publication date: 2020-03-17
Anticipated expiration: 2028-07-12

Abstract

The utility model discloses a negative pressure formula amniotic fluid collection system, include: a puncture needle assembly and a puncture collection assembly; the puncture needle assembly comprises a needle tube provided with a liquid pumping cavity; the puncture collection assembly comprises a reinforcing part and a liquid pumping part which are detachably connected with the puncture needle assembly; the reinforcing piece comprises a needle core which can extend into the liquid pumping cavity, and the needle core is detachably connected with the needle tube, so that the reinforcing piece and the puncture needle assembly form a puncture state when being connected; the liquid drawing piece comprises a collecting pipe which is detachably connected with the needle tube, so that a liquid drawing state is formed when the liquid drawing piece is connected with the puncture needle assembly. The utility model uses the needle core in the needle tube, which is easier to puncture the abdominal wall and the uterine wall; the negative pressure collecting pipe can automatically collect the amniotic fluid, so that an operator can feel more relaxed. The negative pressure collecting pipe can be directly used for the centrifugation of amniotic fluid, does not need to be transferred to a test tube by an injector, reduces the possibility of amniotic fluid sample pollution, and has the advantages of simple structure, convenient operation, improved operation safety, good use effect, economy and durability.

Description

Negative pressure formula amniotic fluid collection system

Technical Field

The utility model relates to the technical field of medical equipment, especially a negative pressure formula amniotic fluid collection system.

Background

Amniotic fluid puncture examination is one method of prenatal diagnosis. Is generally suitable for prenatal diagnosis of mid-term pregnancy. The optimal time for puncture and amniotic fluid extraction for prenatal diagnosis is 16-20 weeks of gestation, the amniotic fluid is extracted by puncture with a needle, and fetal active cells in the amniotic fluid are obtained, can be subjected to sheet production and dyeing, and can be used for fetal karyotype analysis, chromosomal genetic disease diagnosis and sex determination, and genomic disease diagnosis and metabolic disease diagnosis can also be performed by using amniotic cell DNA. The method can be used for determining alpha-fetoprotein in amniotic fluid and diagnosing open neural tube malformation of fetus. In the late gestation period, the amniotic fluid puncture examination can be used for determining blood type, bilirubin, lecithin, sphingomyelin, placenta prolactin, etc., and knowing whether blood type of mother and child is improper, hemolysis, lung maturity of fetus, skin maturity, placenta function, etc. At present, the method for collecting amniotic fluid is to extract 20ml of amniotic fluid in uterus by using an injector and a puncture needle, and because the puncture needle is relatively long and has a thin tube cavity, the pressure is not easy to master and is unstable when the amniotic fluid specimen is extracted every time, the puncture needle is easy to swing left and right and up and down, a patient feels pain, and amnion rupture and leakage are easy to occur to cause fetal abortion. Chinese patents with patent names of 'negative pressure test tube amniotic fluid puncture device' (publication number: CN208404638U) and 'amniotic fluid cavity puncture amniotic fluid collection device' (publication number: CN203776941U) both disclose that a negative pressure test tube is used for collecting amniotic fluid, so that the trouble of manually sucking by using an injector is eliminated, the workload of medical staff can be reduced, the labor intensity of the medical staff is reduced, the amniotic fluid needs to be additionally transferred into the test tube so as to be convenient for centrifugal treatment, and the possibility of secondary pollution of the amniotic fluid is increased. The Chinese patent with the patent name of vacuum blood collection test tube (publication number: CN204072113U) discloses that a vacuum tube is adopted for collecting liquid, air is controlled to enter the test tube body by controlling the opening or closing of a valve, the air pressure of the vacuum collection test tube can be effectively controlled, the operation difficulty is high, and the requirement on operators is high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: provides a negative pressure type amniotic fluid collecting device which is convenient to operate.

The utility model provides a solution of its technical problem is: a negative pressure formula amniotic fluid collection device, includes: a puncture needle assembly and a puncture collection assembly; a puncture needle assembly: the liquid suction device comprises a needle tube provided with a liquid suction cavity, wherein the front end of the needle tube is a needle opening end, and the rear end of the needle tube is a liquid outlet end; the puncture collection component: the puncture needle comprises a reinforcing part and a liquid pumping part, wherein the reinforcing part and the liquid pumping part are detachably connected with a puncture needle assembly; a reinforcing member: the puncture needle comprises a needle core which can extend into a liquid extracting cavity, wherein the needle core is detachably connected with a needle tube, so that a puncture state is formed when a reinforcing piece is connected with a puncture needle assembly; a liquid pumping part: including gathering the pipe, the head end of gathering the pipe is the feed liquor end, the end of gathering the pipe is for sending the liquid end, the feed liquor end of gathering the pipe is connected with the play liquid end of needle tubing is detachable for form the drawing liquid state when drawing liquid spare is connected with puncture needle subassembly.

As a further improvement of the technical scheme, the puncture needle assembly further comprises a needle head seat arranged at the liquid outlet end of the needle tube, the needle core comprises a needle core head, the head end of the collecting tube is provided with a first connecting head, and the needle head seat can be detachably connected with the needle core head and the first connecting head respectively.

As a further improvement of the technical scheme, the first connecting head is in threaded connection with the needle seat.

As a further improvement of the technical scheme, the outer wall of the needle tube is provided with insertion scales, and the puncture needle assembly further comprises a scale mark sliding block sleeved on the outer wall of the needle tube.

As a further improvement of the technical scheme, the puncture needle assembly further comprises a protection tube, and the protection tube is sleeved on the outer sides of the scale mark sliding block and the needle tube.

As a further improvement of the above technical solution, the liquid pumping member further comprises a liquid guide device and a negative pressure collecting pipe, the liquid guide device comprises an inflow end and an outflow end which are communicated, the inflow end of the liquid guide device is detachably connected with the liquid feeding end of the collecting pipe, and the outflow end of the liquid guide device is connected with the negative pressure collecting pipe.

As a further improvement of the technical scheme, the liquid feeding end of the collecting pipe is provided with a second connector, the second connector is provided with a cone head sleeve, the liquid guide device comprises a cone head provided with a liquid receiving port, and the cone head is detachably connected with the cone head sleeve.

As a further improvement of the technical scheme, the liquid guide device further comprises a connecting pipe, the connecting pipe is communicated with the conical head, two puncture tube needles are communicated and arranged on the connecting pipe, a sealing rubber plug is arranged at the tube opening of the negative pressure collecting tube, and the two puncture tube needles pierce the sealing rubber plug and extend into the negative pressure collecting tube.

As a further improvement of the technical scheme, the outer wall of the negative pressure collecting pipe is provided with capacity scales along the length direction.

As a further improvement of the technical scheme, the collecting tube further comprises a flow stopping clip which is arranged on the collecting tube in a clamping manner.

The utility model has the advantages that: the utility model uses the needle core in the needle tube, which is easier to puncture the abdominal wall and the uterine wall; the negative pressure collecting pipe can automatically collect the amniotic fluid, so that an operator can feel more relaxed. The negative pressure collecting pipe can be directly used for the centrifugation of amniotic fluid, does not need to be transferred to a test tube by an injector, reduces the possibility of amniotic fluid sample pollution, and has the advantages of simple structure, convenient operation, improved operation safety, good use effect, economy and durability.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and other embodiments obtained by those skilled in the art without inventive labor based on the embodiments of the present invention all belong to the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. All technical characteristics in the invention can be interactively combined on the premise of not conflicting with each other.

Referring to fig. 1, a negative pressure formula amniotic fluid collection system includes: a puncture needle assembly and a puncture collection assembly; a puncture needle assembly: the device comprises a needle tube 11 provided with a liquid pumping cavity, wherein the front end of the needle tube 11 is a needle opening end, and the rear end of the needle tube 11 is a liquid outlet end; the puncture collection component: the puncture needle comprises a reinforcing part and a liquid pumping part, wherein the reinforcing part and the liquid pumping part are detachably connected with a puncture needle assembly; a reinforcing member: the puncture needle comprises a needle core 21 which can extend into a liquid extracting cavity, wherein the needle core 21 is detachably connected with a needle tube 11, so that a puncture state is formed when a reinforcing part is connected with a puncture needle component; a liquid pumping part: including gathering pipe 22, the head end of gathering pipe 22 is the feed liquor end, the end of gathering pipe 22 is the liquid delivery end, the feed liquor end of gathering pipe 22 is connected with the play liquid end of needle tubing 11 is detachable for form the drawing liquid state when drawing liquid spare and puncture needle subassembly are connected. On one hand, when the medical staff performs amniotic fluid puncture on the pregnant woman to extract amniotic fluid, because the needle tube 11 is hollow, the single needle tube 11 is difficult to puncture, a reinforcement piece needs to be used in cooperation, the needle core 21 is sleeved in the fluid-extracting cavity of the needle tube 11, the needle core 21 is consistent with the puncture part of the needle tube 11 at the moment, the needle core 21 cooperates with the needle tube 11 to perform amniotic fluid puncture, after the puncture is successful, the needle core 21 is pulled out, the fluid outlet end of the needle tube 11 is connected with the fluid inlet end of the collection tube 22, and the tail end of the collection tube 22 is a fluid delivery end; on the other hand, it can dismantle with needle tubing 11 to gather pipe 22 for the equipment is convenient, and it is convenient to dismantle, and then, the utility model discloses the practicality is strong, excellent in use effect.

Further as a preferred embodiment, the puncture needle assembly further comprises a needle head seat 12 disposed at the liquid outlet end of the needle tube 11, the needle core 21 comprises a needle core head 211, the head end of the collection tube 22 is provided with a first connector 221, and the needle head seat 12 can be detachably connected with the needle core head 211 and the first connector 221, respectively. The needle tube 11 is hollow, the needle core 21 can be sleeved in the needle tube 11, and the needle core 21 cooperates with the needle tube 11 to perform amniotic fluid puncture. The needle core head 211 is arranged to facilitate holding the needle core 21, the upper end of the needle head seat 12 is provided with a groove, the needle core head 211 is provided with a clamping block, and the needle core 21 can be detachably fixed on the needle tube 11 by clamping the clamping block in the groove. After the puncture is successful, the needle core 21 is pulled out, and the first connector 221 is arranged at the head end of the collection tube 22, and the needle tube 11 can be communicated with the collection tube 22 by connecting the first connector 221 to the needle head seat 12.

Further as a preferred embodiment, said first connector 221 is screwed to the needle base 12. The outer wall of the first connector 221 is provided with an external thread, the inner wall of the needle base 12 is provided with an internal thread meshed with the external thread, and the first connector 221 can be detachably connected with the needle base 12 through the matching of the external thread of the first connector 221 and the internal thread of the needle base 12.

Further as a preferred embodiment, the outer wall of the needle tube 11 is provided with insertion scales, and the puncture needle assembly further comprises a scale mark slider 13 sleeved on the outer wall of the needle tube 11. When the puncture operation is carried out, the pregnant woman with the indication disease firstly carries out B-mode ultrasonography, and the position of the placenta, the condition of the fetus and the puncture depth are determined, so that the placenta is prevented from being accidentally injured. Because the outer wall of the needle tube 11 is provided with the inserting scales, the distance between every two scales is 1CM, after the puncture depth is confirmed, the scale mark sliding block 13 is slid to the corresponding scale, after the needle inlet point is selected, the skin is disinfected, the disinfection towel is laid, the needle tube 11 with the needle core 21 is vertically punctured at the selected point, and the puncture depth is confirmed according to the scale mark sliding block 13 on the needle tube 11.

In a further preferred embodiment, the puncture needle assembly further comprises a protection tube 14, and the protection tube 14 is sleeved on the scale mark sliding block 13 and the outer side of the needle tube 11. Before the puncture needle assembly is used, the needle tube 11 is provided with the protective tube 14, so that the puncture needle 1 cannot pierce a packaging bag due to movement in the packaging bag before the needle tube 11 is used, the puncture needle assembly is polluted, or a sharp part of the puncture needle assembly is exposed to cause injury to people.

Further as a preferred embodiment, the liquid pumping element further comprises a liquid guide device and a negative pressure collecting tube 23, the liquid guide device comprises an inflow end and an outflow end which are communicated, the inflow end of the liquid guide device is detachably connected with the liquid feeding end of the collecting tube 22, and the outflow end of the liquid guide device is connected with the negative pressure collecting tube 23. The inflow end of the liquid guide device is connected with the liquid feeding end of the collecting tube 22, the outflow end of the liquid guide device is connected with the negative pressure collecting tube 23, negative pressure formed inside the negative pressure collecting tube 23 can be passed, amniotic fluid in the amniotic cavity of the pregnant woman can be automatically sucked out to the negative pressure collecting tube 23 through the needle tube 11, the collecting tube 22 and the liquid guide device, and then the amniotic fluid is stored in the negative pressure collecting tube 23, so that the trouble of manually sucking the amniotic fluid by using an injector is eliminated, the workload of medical workers can be reduced, the labor intensity of the medical workers can be reduced, and the sucking speed can be greatly improved.

Further preferably, the liquid feeding end of the collection tube 22 is provided with a second connector 222, the second connector 222 is provided with a cone sleeve, the liquid guide device comprises a cone 241 provided with a liquid receiving port, and the cone 241 is detachably connected with the cone sleeve. The second connector 222 is formed into a conical table-shaped structure, the outer wall of the second connector 222 is provided with anti-falling lines, the plug puncture needle is provided with a hollow conical head 241, the shape of the conical head 241 is matched with that of the second connector 222, and the inner wall of the conical head 241 is also provided with anti-falling lines, so that the second connector 222 is inserted into the conical head 241 and is not easy to loosen.

Further as a preferred embodiment, the liquid guide device further includes a connecting pipe 242, the connecting pipe 242 is communicated with the conical head 241, the connecting pipe 242 is communicated with two puncturing tube needles 243, the negative pressure collecting pipe 23 has two, a tube opening of the negative pressure collecting pipe 23 is provided with a sealing rubber plug, and the two puncturing tube needles 243 puncture the sealing rubber plug and extend into the negative pressure collecting pipe 23. The connection tube 242 is connected to the conical head 241, the connection tube 242 is connected to a puncture needle 243, and the conical head 241, the connection tube 242 and the puncture needle 243 form a liquid guide. The conventional method for collecting amniotic fluid generally needs to collect 20ml of amniotic fluid, and the conventional negative pressure amniotic fluid collecting device is characterized in that a negative pressure collecting pipe 23 is generally 10ml and is divided into two negative pressure collecting pipes 23 for collection, after one negative pressure collecting pipe 23 of 10ml is fully collected, the negative pressure collecting pipe 23 for collecting the amniotic fluid is pulled out, and the other negative pressure collecting pipe 23 is inserted into a puncture needle 243, so that when the negative pressure collecting pipe 23 is replaced, the needle point can shake to damage a fetus and maternal tissues. In one embodiment, one end of the conical head 241 is connected to the collecting tube 22, the other end of the conical head 241 is connected to the connecting tube 242, the connecting tube 242 is connected to the puncture needle 243, the puncture needles 243 are inserted into the corresponding two negative pressure collecting tubes 23 of 10ml, and the two negative pressure collecting tubes 23 can automatically suck 20ml of amniotic fluid, so that the operation of the medical staff is easier. The negative pressure collecting pipe 23 can be directly used for the centrifugation of the amniotic fluid, and is not required to be transferred to a test tube by a syringe, so that the possibility of the contamination of the amniotic fluid sample is reduced. Because the two negative pressure collecting pipes 23 are connected at the same time, the amniotic fluid collection is completed twice by one operation.

In a further preferred embodiment, the outer wall of the negative pressure collection pipe 23 is provided with a volume scale along the length direction thereof. Because the tube body of the negative pressure collecting tube 23 is made of transparent plastic material, and the outer wall of the tube body is provided with volume scales, the medical staff can conveniently refer to and control the extraction amount of the amniotic fluid to be extracted by contrasting the volume scales.

Further as a preferred embodiment, the collecting tube also comprises a flow stopping clip 3, and the flow stopping clip 3 is clamped on the collecting tube 22. Before use, the collecting tube 22 is clamped through the flow stopping clamp 3 and connected with the collecting tube 22, the liquid guide device and the negative pressure collecting tube 23, when the collecting device is used, a medical worker holds the medical ultrasonic probe with one hand and holds the needle tube 11 sleeved with the needle core 21 with the other hand to perform amniotic fluid puncture, after the puncture is completed, the needle core 21 is pulled out, the first connecting head 221 is connected to the needle head seat 12, the flow stopping clamp 5 is loosened, so that the needle tube 11 is communicated with the negative pressure collecting tube 23 through the collecting tube 22 and the liquid guide device, and amniotic fluid in a amniotic cavity of a pregnant woman can be automatically sucked out of the negative pressure collecting tube 23 through negative pressure formed in the negative pressure collecting tube 23 and stored through the needle tube 11, the collecting tube 22 and the liquid guide device. Meanwhile, the collection tube 22 is provided with the flow stopping clip 3, and when the fetus moves to the position near the needle head of the needle tube 11, the negative pressure can be quickly relieved by clamping the flow stopping clip 3, so that the fetus is prevented from being injured by sucking the fetal tissues.

Use the utility model discloses the time, when carrying out the puncture operation, the pregnant woman of indication does the B ultrasonic earlier, confirms the placenta position, the foetus condition, and the degree of depth of puncture, avoids accidentally injuring the placenta, confirms behind the degree of depth of puncture, on sliding scale mark slider 13 to corresponding scale, after having selected the needle entering point, disinfection skin spreads the piece of cloth of disinfecting, pierces perpendicularly in the point department of having selected with needle core 21 needle tubing 11, confirms the degree of depth of puncture according to scale mark slider 13 on the needle tubing 11. Before puncture, the collection tube 22 is clamped by the flow stopping clamp 3, the collection tube 22 is connected with a liquid guide device, and the liquid guide device is respectively inserted into two corresponding 10ml negative pressure collection tubes 23 through puncture tube needles 243; the needle tube 11 with the stylet 21 has two falling feeling when passing through the abdominal wall and the uterine wall, after the puncture is successful, the stylet 21 is pulled out, and the collection tube 22 is communicated with the needle tube 11 through threaded connection; then, the flow stopping clamp 3 is loosened, and the amniotic fluid in the amniotic cavity of the pregnant woman can be automatically sucked out into two 10ml negative pressure collecting tubes 23 for storage through the needle tube 11, the collecting tube 22 and the liquid guide device by the negative pressure formed in the negative pressure collecting tube 23; the medical personnel judge the amniotic fluid volume of extraction according to the capacity scale on the outer wall of the negative pressure collecting pipe 23, when the amniotic fluid volume of collection reaches 20ml, the flow stopping clip 3 is closed, then the needle core 21 is inserted to take out the needle tube 11, the sterile gauze is covered, the compression is carried out for 2-3 minutes, and the pregnant woman lies in bed and has a rest for 2 hours.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the details of the embodiments shown, but is capable of various modifications and substitutions without departing from the spirit of the invention.

Claims

1. The utility model provides a negative pressure formula amniotic fluid collection system which characterized in that includes: a puncture needle assembly and a puncture collection assembly;

a puncture needle assembly:

the liquid suction device comprises a needle tube (11) provided with a liquid suction cavity, wherein the front end of the needle tube (11) is a needle port end, and the rear end of the needle tube (11) is a liquid outlet end;

the puncture collection component:

the puncture needle comprises a reinforcing part and a liquid pumping part, wherein the reinforcing part and the liquid pumping part are detachably connected with a puncture needle assembly;

a reinforcing member:

the puncture needle comprises a needle core (21) capable of extending into a liquid pumping cavity, wherein the needle core (21) is detachably connected with a needle tube (11), so that a puncture state is formed when a reinforcing piece is connected with a puncture needle assembly;

a liquid pumping part:

the collection device comprises a collection pipe (22), wherein the head end of the collection pipe (22) is a liquid inlet end, the tail end of the collection pipe (22) is a liquid conveying end, and the liquid inlet end of the collection pipe (22) is detachably connected with the liquid outlet end of a needle tube (11), so that a liquid extraction state is formed when a liquid extraction piece is connected with a puncture needle assembly; the liquid pumping part also comprises a liquid guide device and a negative pressure collecting pipe (23), the liquid guide device comprises an inflow end and an outflow end which are communicated, the inflow end of the liquid guide device is detachably connected with the liquid feeding end of the collecting pipe (22), and the outflow end of the liquid guide device is connected with the negative pressure collecting pipe (23); the liquid sending end of the collecting pipe (22) is provided with a second connector (222), the second connector (222) is provided with a cone head sleeve, the liquid guide device comprises a cone head (241) provided with a liquid receiving port, and the cone head (241) is detachably connected with the cone head sleeve; the liquid guide device further comprises a connecting pipe (242), the connecting pipe (242) is communicated with the conical head (241), two puncture tube needles (243) are communicated with the connecting pipe (242), the number of the negative pressure collecting pipes (23) is two, a sealing rubber plug is arranged at the pipe orifice of each negative pressure collecting pipe (23), and the two puncture tube needles (243) pierce through the sealing rubber plug and extend into the negative pressure collecting pipes (23).

2. The negative pressure type amniotic fluid collecting device according to claim 1, wherein: the puncture needle assembly further comprises a needle head seat (12) arranged at the liquid outlet end of the needle tube (11), the needle core (21) comprises a needle core head (211), a first connecting head (221) is arranged at the head end of the collecting tube (22), and the needle head seat (12) can be detachably connected with the needle core head (211) and the first connecting head (221) respectively.

3. The negative pressure type amniotic fluid collecting device according to claim 2, wherein: the first connector (221) is in threaded connection with the needle base (12).

4. The negative pressure type amniotic fluid collecting device according to claim 3, wherein: the outer wall of the needle tube (11) is provided with insertion scales, and the puncture needle assembly further comprises a scale mark sliding block (13) sleeved on the outer wall of the needle tube (11).

5. The negative pressure formula amniotic fluid collection device of claim 4, wherein: the puncture needle assembly further comprises a protection tube (14), and the outside of the scale mark sliding block (13) and the needle tube (11) is sleeved with the protection tube (14).

6. The negative pressure type amniotic fluid collecting device according to claim 1, wherein: the outer wall of the negative pressure collecting pipe (23) is provided with capacity scales along the length direction.

7. The negative pressure type amniotic fluid collecting device according to any one of claims 1 to 6, wherein: the collecting tube also comprises a flow stopping clip (3), and the flow stopping clip (3) is clamped on the collecting tube (22).