CN211460437U

CN211460437U - Arteriovenous puncture device

Info

Publication number: CN211460437U
Application number: CN201922344337.5U
Authority: CN
Inventors: 阳鑫; 曾思达
Original assignee: Shenzhen Huixinuo Technology Co ltd
Current assignee: Shenzhen Huixinuo Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-09-11
Anticipated expiration: 2029-12-24

Abstract

The utility model provides an arteriovenous puncture device, which comprises a needle seat, a puncture needle, an outer catheter and a soft guide wire; the needle base is provided with a needle base needle opening arranged along the puncture direction, and the puncture needle is connected to the needle base needle opening; the outer catheter is sleeved inside the puncture needle, and the soft guide wire is arranged inside the puncture needle. The utility model provides a pair of arteriovenous puncture device can improve the success rate that the pipe was put in the puncture of clinical in-process arteriovenous, and the operator can see the puncture effect with audio-visual mode, and convenient operation, location are accurate, can effectively prevent to release and put the skew of the soft seal wire of pipe in-process at the seal wire.

Description

Arteriovenous puncture device

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to artery and vein puncture device.

Background

Arteriovenous puncture is a technique commonly used in clinic, and venipuncture is often used for blood sampling inspection and transfusion treatment, while arteriovenous puncture is often used for continuous arterial blood pressure detection of patients in anesthesia or operation, and can also be used for performing special inspection or treatment, such as blood gas analysis, selective angiography and treatment, cardiac catheter placement, hemodialysis treatment, and the like.

The arteriovenous puncture trocar commonly used in clinic mainly comprises a puncture needle and an outer catheter, when in use, the puncture needle is firstly used for puncturing a target blood vessel, then the outer catheter is pushed into the blood vessel along the puncture needle, the puncture needle is withdrawn, and the outer catheter is kept in place. However, the arteriovenous puncture trocar often has the problem of puncture failure in practical use, and the puncture often has blood and tube placement failure. The success rate of disposable puncture is lower, has higher requirement for the puncture proficiency, especially for less experienced medical personnel, repeated puncture often increases the pain of patients, brings uneasiness and anxiety to both medical personnel and patients.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing a arteriovenous puncture device can improve the success rate that clinical in-process arteriovenous puncture put the pipe, and the operator can see the puncture effect with audio-visual mode, and convenient operation, location are accurate, can effectively prevent to release and put the skew of the soft seal wire of pipe in-process at the seal wire.

In order to realize the aim, the utility model provides an arteriovenous puncture device, which comprises a needle seat, a puncture needle, an outer catheter and a soft guide wire; the needle base is provided with a needle base needle opening arranged along the puncture direction, and the puncture needle is connected to the needle base needle opening; the outer catheter is sleeved outside the puncture needle, and the soft guide wire is arranged inside the puncture needle.

According to another embodiment of the present invention, the needle base is provided with a sliding handle at one end away from the puncture direction, the sliding handle is provided with a sliding track therein, and the sliding track is disposed along the puncture direction; the soft guide wire penetrates through the sliding rail.

According to another embodiment of the present invention, the sliding handle further comprises a pushing block which can slide on the sliding track, the pushing block is connected with the soft guide wire; the sliding handle is provided with a sliding opening corresponding to the sliding track along the puncture direction, and the pushing block extends to the outside of the sliding handle through the sliding opening.

According to the utility model discloses a another embodiment, the orbital upper surface of sliding is the cambered surface of laminating mutually with the surface of soft seal wire, promotes the piece and has the circular arc piece corresponding with the cambered surface.

According to another embodiment of the present invention, the needle holder is provided with a cavity.

According to another embodiment of the utility model, the arteriovenous puncture device further comprises a luer locking joint fixed at the needle opening of the needle seat, and the outer catheter is connected with the needle seat through the luer locking joint.

According to another embodiment of the present invention, the outer tube is a transparent plastic.

According to another embodiment of the present invention, a plurality of puncture holes are distributed on the puncture needle.

Firstly, selecting a target blood vessel, and placing a pushing block at one end of a sliding guide rail in a needle seat, which is far away from a puncture needle, so that the head of a soft guide wire is completely immersed into the inner side of the puncture needle; the puncture needle is punctured into a target blood vessel, blood flows into the inner side of the puncture needle along the direction of the puncture needle, and an operator can directly see that a small part of blood flows out of a puncture hole of the puncture needle into the outer catheter through the transparent outer catheter, so that successful puncture is indicated; pushing the push block along the sliding guide rail to enable the soft guide wire to enter the target blood vessel, and then pushing the outer catheter to enable the outer catheter to be placed into the target blood vessel along the direction of the soft guide wire, so that the disposable outer catheter is placed; the soft guide wire and the puncture needle are drawn out, and the outer catheter is left in the target blood vessel.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model discloses a novel structure through needle file, promotion piece and sliding guide, realizes that the outer pipe of high success rate is put into, and convenient operation is simple.

2. The puncture needles are distributed with a plurality of puncture holes, after the puncture needles puncture blood vessels, the blood inside the puncture needles can flow out of the puncture holes into the transparent outer catheter hose, so that operators can visually observe and judge the puncture effect conveniently.

3. The utility model discloses a luer lock connects and is connected with outer pipe, and luer lock connects can be connected with other medical instrument or pipe, makes things convenient for subsequent operation step.

4. The puncture needle base is provided with a pushing block for controlling the soft guide wire and a sliding guide rail for smooth displacement of the pushing block, so that the operation is convenient; the sliding guide rail is an arc block and is matched with the bottom of the pushing block in shape, so that the pushing block can be pushed smoothly; the arc-shaped sliding guide rail can also play a role in positioning the soft guide wire, so that the position of the central shaft of the soft guide wire in the sliding process of the push block cannot deviate.

5. Due to the cavity design of the needle seat, when the puncture duration is longer, blood can flow into the inner cavity of the needle seat from the inner side of the puncture needle, so that the blood is prevented from overflowing, and the overflowed blood is prevented from causing uneasiness and anxiety to operators and patients.

The present invention will be described in further detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic sectional view of an arteriovenous puncture device;

FIG. 2 is a schematic cross-sectional view of section A of FIG. 1;

fig. 3 is an installation schematic view of a puncture needle of the arteriovenous puncture device.

Detailed Description

The embodiment provides an arteriovenous puncture device, which comprises a needle base 1, a sliding handle 2, a luer locking joint 3, a puncture needle 4, an outer catheter 5 and a soft guide wire 6 as shown in figures 1 to 3; the needle base 1 is provided with a cavity 11, one end of the needle base is connected with the sliding handle 2, and the other end of the needle base is provided with a needle opening 12 of the needle base and a needle opening 12 of the needle base which are arranged along the puncture direction; the sliding handle 2 consists of a sliding track 21 arranged inside the sliding handle 2 and a pushing block 22 which can slide on the sliding track 21; the sliding track 21 is placed along the puncture direction, the soft guide wire 6 penetrates through the sliding track 21, and the pushing block 22 is connected with the soft guide wire 6; the upper surface of the sliding track 21 is an arc surface 211 attached to the outer surface of the soft guide wire 6, and the pushing block 22 is provided with an arc block 221 corresponding to the arc surface 211; the slide handle 2 is provided with a slide opening 23 corresponding to the slide rail 21 in the puncture direction, and the push block 22 extends to the outside of the slide handle 2 through the slide opening 23.

The needle seat needle opening 12 is fixedly connected with the Ruhr locking connector 3, and the puncture needle 4 penetrates through the Ruhr locking connector 3 to be connected with the needle seat needle opening 12; the outer catheter 5 is sleeved outside the puncture needle 4, and the soft guide wire 6 is arranged inside the puncture needle 4; the outer conduit 5 is transparent plastic; a plurality of puncture holes 41 are distributed on the puncture needle 4.

Firstly, selecting a target blood vessel, and placing the pushing block 22 at one end of the sliding guide rail in the needle seat 1, which is far away from the puncture needle 4, so that the head of the soft guide wire 6 is completely immersed into the inner side of the puncture needle 4; the puncture needle 4 is punctured into a target blood vessel, blood flows into the inner side of the puncture needle 4 along the direction of the puncture needle 4, and an operator can directly see that a small part of blood flows out of a puncture hole 41 of the puncture needle 4 into the outer catheter 5 through the transparent outer catheter 5, so that successful puncture is shown; pushing the push block along the sliding guide rail to enable the soft guide wire 6 to enter the target blood vessel, then pushing the outer catheter 5 to enable the outer catheter 5 to be placed into the target blood vessel along the direction of the soft guide wire 6, and achieving the placement of the disposable outer catheter 5; the flexible guide wire 6 and the puncture needle 4 are withdrawn, and the outer catheter 5 is left in the target blood vessel.

Compared with the prior art, the embodiment has the following advantages:

1. the embodiment adopts a novel structure, realizes the imbedding of the outer catheter 5 with high success rate through the needle seat 1, the pushing block 22 and the sliding guide rail, and has convenient and simple operation.

2. The puncture needle 4 is distributed with a plurality of puncture holes 41, after the puncture needle 4 punctures the blood vessel, the blood inside the puncture needle 4 can flow out of the puncture holes 41 into the transparent outer catheter 5 hose, which is convenient for the operator to observe and judge the puncture effect visually.

3. In the embodiment, the luer locking connector 3 is connected with the outer catheter 5, and the luer locking connector 3 can be connected with other medical instruments or catheters, so that the subsequent operation steps are facilitated.

4. The needle seat 1 of the puncture needle 4 is provided with a pushing block 22 for controlling the soft guide wire 6 and a sliding guide rail for smooth displacement of the pushing block 22, so that the operation is convenient; the sliding guide rail is an arc block 221, which is matched with the bottom shape of the pushing block 22, and is beneficial to smoothly pushing the pushing block 22; the arc-shaped sliding guide rail can also play a role in positioning the soft guide wire 6, so that the position of the central shaft of the soft guide wire 6 in the sliding process of the push block cannot deviate.

5. The cavity 11 of the needle base 1 is designed, when the puncture duration is longer, blood can flow into the inner cavity of the needle base 1 from the inner side of the puncture needle 4, the blood is prevented from overflowing, and the condition that the overflowed blood brings uneasiness and anxiety to operators and patients is avoided.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the scope of the invention. Any person skilled in the art can make some modifications without departing from the scope of the present invention, i.e. all equivalent modifications made according to the present invention should be covered by the scope of the present invention.

Claims

1. An arteriovenous puncture device is characterized by comprising a needle seat, a puncture needle, an outer catheter and a soft guide wire; the needle seat is provided with a needle seat opening arranged along the puncture direction, and the puncture needle is connected to the needle seat opening; the outer catheter is sleeved outside the puncture needle, and the soft guide wire is arranged inside the puncture needle.

2. The arteriovenous puncture device of claim 1 wherein said hub is provided at an end remote from the puncture direction with a slide handle having a slide track disposed therein, said slide track being disposed along the puncture direction; the soft guide wire penetrates through the sliding rail.

3. The arteriovenous puncture device of claim 2 wherein said slide handle further comprises a push block slidable on said slide track, said push block being connected to said soft guidewire; the sliding handle is provided with a sliding opening corresponding to the sliding track along the puncture direction, and the pushing block extends to the outside of the sliding handle through the sliding opening.

4. The arteriovenous puncture device of claim 3 wherein the upper surface of the slide rail is a curved surface which conforms to the outer surface of the soft guidewire, and the push block has a curved surface corresponding to the curved surface.

5. The arteriovenous puncture device of claim 1 wherein said hub is provided with a cavity.

6. The arteriovenous puncture device of claim 1 further comprising a luer lock connector secured to the hub port, the outer catheter being connected to the hub by the luer lock connector.

7. The arteriovenous puncture device of claim 1 wherein said outer catheter is a transparent plastic.

8. The arteriovenous puncture device of claim 1 wherein said puncture needle is distributed with a plurality of puncture holes.