CN221599980U - Disposable amniotic fluid diagnostic needle - Google Patents

Abstract

The utility model relates to a disposable amniotic fluid diagnosis needle, which comprises a puncture needle device and a vacuum collection tube, and is characterized in that: the puncture needle device is connected with the vacuum collection tube through a collection connector; the collecting connector is formed by coaxially arranging two parts of a small-diameter connector and a large-aperture tubular structure, and the small-diameter connector is spliced with a top connector of the puncture needle device; the inner diameter of the large-aperture tubular structure is larger than the maximum outer diameter of the vacuum collection tube, a needle seat is arranged at the root of the inner cavity of the large-aperture tubular structure, the end face of the needle seat is connected with a thimble, the thimble penetrates into the vacuum collection tube, and the inner cavity of the thimble is communicated with the inner cavity of the small-diameter connector. The amniotic fluid diagnosis needle adopts the collection connector as a connecting piece between the puncture needle device and the vacuum collection tube, so that the operation is convenient, and the thimble is directly inserted into the vacuum collection tube without conduit connection, thereby ensuring the quantity and quality of amniotic fluid sampling.

Description

Disposable amniotic fluid diagnostic needle

Technical Field

The utility model relates to a disposable amniotic fluid diagnosis needle, and belongs to the technical field of medical instrument accessories.

Background

Amniotic fluid puncture is a means for pregnant women to carry out pregnancy and can more accurately detect some congenital diseases of infants, so the method belongs to a conventional detection means.

In the process of amniotic fluid puncture, in order to ensure the accuracy of a sample, the amniotic fluid needs to be collected twice generally, so that a collection test tube needs to be replaced in the sampling process, complicated operation steps are brought to medical staff, and the sampling efficiency is low. The national patent office discloses the application number: 201710586433.3, entitled "negative pressure test tube amniotic fluid puncture device", discloses in this application that an amniotic fluid straw is used as a connecting piece between a puncture needle and a negative pressure test tube, and a flow stop clip is arranged on the amniotic fluid straw, so that when the negative pressure test tube is controlled to be replaced, closing action is performed. However, the technical scheme has the following disadvantages: 1. in the operation process, the plastic plug is exposed in the air, so that the risk of pollution exists, and the accuracy of sampling is directly affected; 2. besides holding the negative pressure test tube by hand, the medical staff is responsible for the plugging and unplugging of the negative pressure test tube and also needs to control the closing of the flow stopping clamp, so that the medical staff needs to cooperate with both hands or other medical staff, and the operation is not simple; 3. the amniotic fluid suction pipe in the form of a guide pipe is overlong, the negative pressure in the vacuum suction pipe can be reduced by the air in the amniotic fluid guide pipe, and the amniotic fluid is small in pressure, so that the amniotic fluid is difficult to sample.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a disposable amniotic fluid diagnosis needle which adopts a collection connector as a connecting piece between a puncture needle device and a vacuum collection tube, is convenient to operate, and a thimble is directly inserted into the vacuum collection tube without conduit connection, so that the quantity and quality of amniotic fluid sampling are ensured.

In order to solve the problems, the specific technical scheme of the utility model is as follows: the disposable amniotic fluid diagnosis needle comprises a puncture needle device and a vacuum collection tube, wherein the puncture needle device is connected with the vacuum collection tube through a collection connector; the collecting connector is formed by coaxially arranging two parts of a small-diameter connector and a large-aperture tubular structure, and the small-diameter connector is spliced with a top connector of the puncture needle device; the inner diameter of the large-aperture tubular structure is larger than the maximum outer diameter of the vacuum collection tube, a needle seat is arranged at the root of the inner cavity of the large-aperture tubular structure, the end face of the needle seat is connected with a thimble, the thimble penetrates into the vacuum collection tube, and the inner cavity of the thimble is communicated with the inner cavity of the small-diameter connector.

The outer circumference of thimble be equipped with the rubber cover, the outer tip of rubber cover is equipped with two plane rubbers, the laminating of plane rubber just wraps up in the needle point position of thimble.

The puncture needle device comprises a needle tube, a connector, a needle core and a needle sleeve; the connector is positioned at the rear end part of the needle tube and is provided with a cavity communicated with the needle tube, and in the working state, the connector is connected with the small-diameter connector of the collecting connector; when the needle is in a non-working state, the needle core is inserted into the inner cavity of the needle tube filled in the needle tube, the needle tip section of the needle core is consistent with the needle tip inclined plane of the needle tube, the end cap at the top of the needle core is buckled on the connecting head, and the needle sleeve is sleeved on the outer circumference of the needle tube.

The connection mode of the connector and the small-diameter connector of the collecting connector is sealing clamping connection or threaded sealing connection.

The vacuum collecting tube is transparent and has bidirectional graduations.

The disposable amniotic fluid diagnosis needle adopts the structure, and has the following advantages:

1. The thimble is arranged in the collecting connector, so that the thimble is prevented from being completely exposed to the outside, and the pollution probability of the thimble is reduced;

2. The collection connector is arranged, so that a suction pipe is not used between the puncture needle device and the vacuum collection pipe, and the vacuum pressure in the vacuum collection pipe is ensured, and the quantity of amniotic fluid samples is ensured;

3. The connector of the puncture needle device is connected with the vacuum collection tube through the collection connector, so that the puncture needle device can be held by one hand, and the operation is convenient and fast;

4. The periphery of the thimble is provided with a rubber sleeve, the top surface of the thimble is provided with closed plane rubber, when the vacuum collection tube is pulled out, the plane rubber is closed, and when the vacuum collection tube is inserted, the plane rubber is opened, so that the cleanliness of the thimble is further ensured;

5. In the process of puncture sampling, the collecting connector can be taken down at any time according to the requirement and connected with the injector so as to inject medicines to complete relevant operation treatment and the like.

Drawings

FIG. 1 is a view showing a connection state of a disposable amniotic fluid diagnostic needle.

Fig. 2 is an axial cross-sectional view of fig. 1.

Fig. 3 is a partial enlarged view of fig. 2.

Fig. 4 is an exploded view of the lancet device in a non-operative state.

Detailed Description

As shown in fig. 1 and 2, the disposable amniotic fluid diagnosis needle comprises a puncture needle device 1 and a vacuum collection tube 2, wherein the puncture needle device 1 and the vacuum collection tube 2 are connected through a collection connector 3; the acquisition connector 3 is formed by coaxially arranging two parts of a small-diameter connector 3-1 and a large-aperture tubular structure 3-2, and the small-diameter connector 3-1 is spliced with a top connector of the puncture needle device 1; the inner diameter of the large-aperture tubular structure 3-2 is larger than the maximum outer diameter of the vacuum collection tube 2, a needle seat 3-3 is arranged at the root of the inner cavity of the large-aperture tubular structure 3-2, the end face of the needle seat 3-3 is connected with a thimble 3-4, the thimble 3-4 pierces into the vacuum collection tube 2, and the inner cavity of the thimble 3-4 is communicated with the inner cavity of the small-diameter connector 3-1. The cavity in the puncture needle device 1 is communicated with the cavity in the vacuum collection tube 2 through the collection connector 3, and amniotic fluid is sucked out through the negative pressure effect in the vacuum collection tube 2. The vacuum collection tube 2 is transparent and has double-sided graduations, so that quantitative collection is facilitated.

As shown in FIG. 3, the outer circumference of the thimble 3-4 is provided with a rubber sleeve 4, the outer end part of the rubber sleeve 4 is provided with two plane rubbers, and the plane rubbers are attached to and wrapped at the needle point position of the thimble 3-4. When the vacuum collection tube is pulled out, the plane rubber is closed, and when the vacuum collection tube is inserted, the plane rubber is opened, thereby further ensuring the cleanliness of the thimble

As shown in fig. 4, the puncture needle device 1 comprises a needle tube 1-1, a connector 1-2, a needle core 1-3 and a needle sleeve 1-4; the connector 1-2 is positioned at the rear end part of the needle tube 1-1 and is provided with a cavity communicated with the needle tube 1-1, and when in a working state, the connector 1-2 is connected with the small-diameter connector 3-1 of the collecting connector 3; when the needle is not in working state, the needle core 1-3 is inserted into the needle tube 1-1 to fill the inner cavity of the needle tube 1-1, the needle tip section of the needle core 1-3 is consistent with the needle tip inclined plane of the needle tube 1-1, and in the puncturing process, the needle core 1-3 occupies the inner cavity of the needle tube 1-1 to prevent human tissues from entering the inner cavity of the needle tube 1-1 in the puncturing process; the end cap at the top of the needle core 1-3 is buckled on the connector 1-2, and the needle sleeve 1-4 is sleeved on the outer circumference of the needle tube 1-1. The puncture needle device 1 not only can be matched with the vacuum collection tube 2 and the collection connector 3 for use, but also can be independently used for completing independent sampling work.

The connection mode of the connector 1-2 and the small-diameter connector 3-1 of the collecting connector 3 is sealing clamping connection or threaded sealing connection. The sealing connection structure ensures the connection performance of the connector 1-2 and the small-diameter connector 3-1, and is convenient to operate.

Claims (5)

1. The utility model provides a disposable amniotic fluid diagnostic needle, includes pjncture needle device (1) and vacuum collection pipe (2), its characterized in that: the puncture needle device (1) is connected with the vacuum collection tube (2) through the collection connector (3); the collecting connector (3) is formed by coaxially arranging a small-diameter connector (3-1) and a large-aperture tubular structure (3-2), and the small-diameter connector (3-1) is spliced with a top connector of the puncture needle device (1); the inner diameter of the large-aperture tubular structure (3-2) is larger than the maximum outer diameter of the vacuum collection tube (2), a needle seat (3-3) is arranged at the root of the inner cavity of the large-aperture tubular structure (3-2), the end face of the needle seat (3-3) is connected with a thimble (3-4), the thimble (3-4) pierces into the vacuum collection tube (2), and the inner cavity of the thimble (3-4) is communicated with the inner cavity of the small-diameter connector (3-1).

2. The single use amniotic fluid diagnostic needle according to claim 1, wherein: the outer circumference of thimble (3-4) be equipped with rubber sleeve (4), the outer tip of rubber sleeve (4) is equipped with two plane rubber, plane rubber laminating and parcel are in the needle point position of thimble (3-4).

3. The single use amniotic fluid diagnostic needle according to claim 1, wherein: the puncture needle device (1) comprises a needle tube (1-1), a connector (1-2), a needle core (1-3) and a needle sleeve (1-4); the connector (1-2) is positioned at the rear end part of the needle tube (1-1) and is provided with a cavity communicated with the needle tube (1-1), and when in a working state, the connector (1-2) is connected with the small-diameter connector (3-1) of the acquisition connector (3); when the needle is not in working state, the needle core (1-3) is inserted into the needle tube (1-1) to fill the inner cavity of the needle tube (1-1), the needle tip section of the needle core (1-3) is consistent with the needle tip inclined plane of the needle tube (1-1), the end cap at the top of the needle core (1-3) is buckled on the connector (1-2), and the needle sleeve (1-4) is sleeved on the outer circumference of the needle tube (1-1).

4. A single use amniotic fluid diagnostic needle according to claim 3, wherein: the connection mode of the connector (1-2) and the small-diameter connector (3-1) of the collecting connector (3) is sealing clamping connection or threaded sealing connection.

5. The single use amniotic fluid diagnostic needle according to claim 1, wherein: the vacuum collecting tube (2) is transparent and has bidirectional graduations.