CN215937487U

CN215937487U - Amniotic fluid puncture device

Info

Publication number: CN215937487U
Application number: CN202122202185.2U
Authority: CN
Inventors: 席娜; 汪雪雁; 宋筱; 任颖慧; 唐书勤
Original assignee: Sichuan Provincial Hospital for Women and Children
Current assignee: Sichuan Provincial Hospital for Women and Children
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-03-04
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses an amniotic fluid puncture device which comprises a puncture needle and a fixed seat for fixing the puncture needle, wherein a film for fixing the fixed seat on the surface of the belly of a pregnant woman is arranged on the bottom surface of the fixed seat, one end of the puncture needle, which is far away from a needle point, penetrates through the film and is fixedly connected to the bottom surface of the fixed seat, a through hole matched with the puncture needle is formed in the center of the fixed seat, a first hose is detachably connected inside the puncture needle, one end of the first hose abuts against the needle point of the puncture needle, and the other end of the first hose penetrates through the through hole and penetrates out of the fixed seat. The device has the advantages of no damage to the fetus and the umbilical cord, good control of the amniotic fluid extraction speed, convenience for an operator to accurately judge the depth of the extracted amniotic fluid, no damage to the fetus and maternal tissues caused by the needle point, low manufacturing cost and safe and convenient operation.

Description

Amniotic fluid puncture device

Technical Field

The utility model relates to the field of medical instruments, in particular to an amniotic fluid puncture device.

Background

Amniotic fluid puncture for amniotic fluid chromosome examination is the most commonly used method for medical diagnosis of fetal malformation in fetus, and amniotic fluid puncture examination is a prenatal diagnosis method. The method is generally suitable for prenatal diagnosis of metaphase pregnancy, the best puncture is performed to extract amniotic fluid within 16-20 weeks of gestation, the amniotic fluid is extracted by needle puncture, fetal vitality cells in the amniotic fluid are obtained, the cells can be used for sheet making and dyeing, fetal karyotype analysis, chromosome genetic disease diagnosis and sex judgment can be performed, and genomic disease diagnosis and metabolic disease diagnosis can also be performed by using amniotic fluid 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. Although the puncture process is operated under the B ultrasonic instruction, the umbilical cord and the foetus damage that also occasionally take place metal puncture needle syringe needle and arouse, how to design a amniotic fluid piercing depth, avoid metal puncture needle syringe needle to hinder and foetus and umbilical cord, control amniotic fluid extraction speed that can be fine, make things convenient for the operator to make accurate control to the degree of depth of extracting the amniotic fluid, do not make the needle point cause the damage to foetus and maternal tissue, and low in manufacturing cost, the operation is safe convenient, this is the present problem of treating urgently.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides the amniotic fluid puncturing device which has the advantages of no damage to a fetus and an umbilical cord, good control of the amniotic fluid extraction speed, convenience for an operator to accurately judge the depth of the extracted amniotic fluid, no damage to the fetus and maternal tissues caused by a needle point, low manufacturing cost and safe and convenient operation.

The technical scheme of the utility model is as follows:

the utility model provides an amniotic fluid puncture device, includes the pjncture needle and is used for fixing the fixing base of pjncture needle, the bottom surface of fixing base is equipped with and is used for fixing the pad pasting on pregnant woman's belly skin surface with the fixing base, the one end that the needle point was kept away from to the pjncture needle is passed pad pasting and fixed connection are in the bottom surface of fixing base, the center of fixing base seted up with pjncture needle matched with through-hole, the inside of pjncture needle can be dismantled and be connected with first hose, the one end of first hose is supported the needle point department of pjncture needle, the other end passes the through-hole is worn out the fixing base.

The working principle of the technical scheme is as follows:

the puncture needle and the fixed seat are made of metal materials, such as stainless steel and the like, when the puncture needle is used, the puncture needle penetrates through the belly skin and the wall of the uterus of a pregnant woman from the outside and enters the amniotic fluid cavity, then the adhesive film is attached to the belly of the pregnant woman, and the positions of the puncture needle and the fixed seat are fixed through the adhesive film, so that the puncture needle and the fixed seat are prevented from moving and the amniotic fluid is prevented from being extracted; after the puncture needle and the fixed seat are fixed, the first hose is extracted from the puncture needle, then the second hose is inserted into the amniotic cavity of the pregnant woman through the through hole in the fixed seat, and the syringe extracts amniotic fluid through the second hose; through setting up at the inside solid first hose of pjncture needle, can prevent that the amniotic fluid in the amniotic fluid chamber from flowing out from the pjncture needle, simultaneously because the pjncture needle is compared in current amniotic fluid puncture structure, its length is shorter, can effectually avoid stabbing pregnant woman and baby because of the length overlength when penetrating in the amniotic fluid chamber of pregnant woman to the inserted second hose is compared in the more softness of the stereoplasm syringe needle that the metal made, even operate carelessly also can not cause the damage to foetus and maternal tissue.

In a further technical scheme, the puncture needle device further comprises an injector, and a second hose matched with the puncture needle is connected to an injection interface of the injector.

The inserted second flexible tube is more flexible than a hard needle made of metal, does not cause damage to the fetus and maternal tissues even if careless manipulation is performed, and controls the amniotic fluid extraction rate by controlling the extraction rate of the syringe.

In a further technical scheme, the fixing seat and the film are both cylindrical, and the radius of the film is larger than that of the fixing seat.

Fix the position of pjncture needle and fixing base through the pad pasting, prevent that it from removing, influence the extraction of amniotic fluid.

In a further technical scheme, the diameter and the through hole of the puncture needle are the same as the diameter of the first hose, the diameter of the second hose is smaller than the diameter of the first hose, and the length of the second hose is larger than the length of the first hose.

First hose is solid, inserts and to prevent in the pjncture needle that the amniotic fluid in the amniotic fluid chamber from flowing out from the pjncture needle, simultaneously, makes things convenient for the operator to make accurate control to the degree of depth of extraction amniotic fluid through control second hose male length.

The utility model has the beneficial effects that:

1. the amniotic fluid extraction speed can be well controlled, an operator can conveniently and accurately judge the depth of the amniotic fluid, the needle tip does not damage the fetus and maternal tissues, the manufacturing cost is low, and the operation is safe and convenient;

2. the inserted second hose is softer than a hard needle made of metal, so that the fetus and maternal tissues cannot be damaged even if the second hose is carelessly operated, and the amniotic fluid extraction speed is controlled by controlling the extraction speed of the syringe;

3. the positions of the puncture needle and the fixed seat are fixed through the sticking film, so that the puncture needle and the fixed seat are prevented from moving and the extraction of amniotic fluid is influenced;

4. first hose is solid, inserts and to prevent in the pjncture needle that the amniotic fluid in the amniotic fluid chamber from flowing out from the pjncture needle, simultaneously, makes things convenient for the operator to make accurate control to the degree of depth of extraction amniotic fluid through control second hose male length.

Drawings

FIG. 1 is a schematic view of a needle in accordance with an embodiment of the present invention;

fig. 2 is a schematic view of a syringe according to an embodiment of the present invention.

Description of reference numerals:

1-a fixed seat, 2-a first hose, 3-a puncture needle, 4-a sticking film, 5-an injector and 6-a second hose.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

Example (b):

as shown in fig. 1-2, an amniotic fluid puncture device comprises a puncture needle 3 and a fixing seat 1 for fixing the puncture needle 3, wherein a film 4 for fixing the fixing seat 1 on the surface of the belly of a pregnant woman is arranged on the bottom surface of the fixing seat 1, one end of the puncture needle 3, which is far away from the needle point, is penetrated through the film 4 and fixedly connected to the bottom surface of the fixing seat 1, a through hole matched with the puncture needle 3 is formed in the center of the fixing seat 1, a first hose 2 is detachably connected to the inside of the puncture needle 3, one end of the first hose 2 is supported to the needle point of the puncture needle 3, and the other end of the first hose passes through the through hole and penetrates out of the fixing seat 1.

The working principle of the technical scheme is as follows:

the puncture needle 3 and the fixed seat 1 are made of metal materials, such as stainless steel and the like, when the puncture needle is used, the puncture needle 3 penetrates through the belly skin and the uterine wall of a pregnant woman from the outside and enters a amniotic fluid cavity, then the adhesive film 4 is attached to the belly of the pregnant woman, and the positions of the puncture needle 3 and the fixed seat 1 are fixed through the adhesive film 4, so that the puncture needle is prevented from moving and the amniotic fluid is prevented from being sucked; after the puncture needle 3 and the fixed seat 1 are fixed, the first hose 2 is extracted from the puncture needle 3, then the second hose 6 is inserted into the amniotic cavity of the pregnant woman through a through hole on the fixed seat 1, and the syringe 5 extracts the amniotic fluid through the second hose 6; through setting up at 3 inside solid first hoses 2 of pjncture needle, can prevent that the amniotic fluid in the amniotic fluid chamber from flowing out from pjncture needle 3, simultaneously because pjncture needle 3 is compared in current amniotic fluid puncture structure, its length is shorter, can effectually avoid stabbing pregnant woman and baby because of the length overlength when penetrating the amniotic fluid chamber of pregnant woman to inserted second hose 6 is compared in the more softness of the stereoplasm syringe needle that the metal was made, even operate carelessly also can not cause the damage to foetus and maternal tissue.

In another embodiment, as shown in fig. 2, the puncture needle device further comprises a syringe 5, and a second hose 6 matched with the puncture needle 3 is connected to an injection interface of the syringe 5.

The inserted second hose 6 is more flexible than a hard needle made of metal, does not cause damage to the fetal and maternal tissues even if careless handling is performed, and controls the amniotic fluid extraction rate by controlling the extraction rate of the syringe 5.

In another embodiment, the fixing seat 1 and the film 4 are both cylindrical, and the radius of the film 4 is greater than that of the fixing seat 1.

The puncture needle 3 and the fixed seat 1 are fixed in position through the adhesive film 4, so that the puncture needle is prevented from moving and the amniotic fluid is prevented from being extracted.

In another embodiment, the puncture needle 3 has the same diameter and through hole as the first tube 2, the second tube 6 has a smaller diameter than the first tube 2, and the second tube 6 has a greater length than the first tube 2.

First hose 2 is solid, inserts and to prevent in the pjncture needle 3 that the amniotic fluid in the amniotic fluid chamber from flowing out from pjncture needle 3, simultaneously, makes things convenient for the operator to make accurate control to the degree of depth of extraction amniotic fluid through the length of controlling 6 inserteds of second hose.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides an amniotic fluid puncture device, its characterized in that, includes the pjncture needle and is used for fixing the fixing base of pjncture needle, the bottom surface of fixing base is equipped with and is used for fixing the pad pasting on pregnant woman belly skin surface, the one end that the needle point was kept away from to the pjncture needle is passed pad pasting and fixed connection are in the bottom surface of fixing base, the center of fixing base seted up with pjncture needle matched with through-hole, the inside of pjncture needle can be dismantled and be connected with first hose, the one end of first hose is supported the needle point department of pjncture needle, the other end passes the through-hole is worn out the fixing base.

2. The amniotic fluid puncture device according to claim 1, further comprising an injector, wherein a second hose matched with the puncture needle is connected to an injection interface of the injector.

3. The amniotic fluid puncture device according to claim 1, wherein the fixing seat and the adhesive film are both cylindrical, and the radius of the adhesive film is larger than that of the fixing seat.

4. The amniotic fluid puncture device according to claim 2, wherein the puncture needle has the same diameter and through hole as the first tube, the second tube has a smaller diameter than the first tube, and the second tube has a greater length than the first tube.