CN213076951U

CN213076951U - Artery puncture needle

Info

Publication number: CN213076951U
Application number: CN202020908165.XU
Authority: CN
Inventors: 查俊; 王莉
Original assignee: Suzhou Science and Technology Town Hospital
Current assignee: Suzhou Science and Technology Town Hospital
Priority date: 2020-05-26
Filing date: 2020-05-26
Publication date: 2021-04-30
Anticipated expiration: 2030-05-26

Abstract

The utility model discloses an artery puncture needle, including nook closing member and pipe, the coaxial line intercommunication has the installation pipe on the feed liquor end of pipe, the uncovered setting of the other end of installation pipe, and be provided with the joint with the pencil high-speed joint of transfusion system on uncovered serving, be provided with the check valve to one-way conduction of pipe one side in the installation pipe, the tail-end fixation of nook closing member is in a needle file, an organic whole is provided with on the needle file and holds the needle handle, the nook closing member is provided with multichannel evenly distributed's annular groove on being close to most advanced position, the most advanced end of nook closing member penetrates from the opening end of installation pipe, wear out from the preceding tip of pipe after passing the check valve, the needle file card is in. The utility model is provided with a plurality of annular grooves which are evenly distributed on the stylet, and is matched with ultrasonic imaging equipment in the process of puncture, so that doctors can conveniently and accurately position the position between the artery and the stylet; the one-way valve which is communicated in one way is arranged in the installation tube, so that blood can not flow out from the open end of the installation tube, and the pollution to an operating room can not be caused.

Description

Artery puncture needle

Technical Field

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

Background

Arterial puncture is a very common surgical adjuvant technique, and an open type indwelling needle is generally adopted as an arterial puncture needle. For patients with weak heartbeat, especially shock, the arterial puncture is adopted to puncture the artery, and then the catheter remaining in the artery is used for transfusion, so that local injury complications caused by repeated puncture can be avoided, the pain of the patients is reduced, and the dynamic observation of rescue, treatment and illness state is facilitated.

The artery is generally positioned at a deeper position of the skin of a human body, and when a doctor penetrates the artery with the artery puncture needle, because the accurate positioning of the puncture positions of the artery and the artery puncture needle is not available, the clinical operation is difficult, and the deviation is easily generated between the needle point of the needle core and the artery. Moreover, after the arterial puncture needle is inserted into an artery and the needle core is extracted, because the blood pressure in the artery is high, blood can flow into the installation tube from the catheter of the arterial puncture needle and then flow out of the installation tube, so that the pollution to an operating room is caused; therefore, the catheter needs to be pressed by hand during puncture, and then the artery puncture needle is connected with the medicine tube of the infusion apparatus, so that the operation of medical care personnel is inconvenient.

SUMMERY OF THE UTILITY MODEL

To the defects in the prior art, the utility model provides an artery puncture needle, which improves the accuracy of artery puncture and can prevent the outflow of arterial blood.

The utility model discloses an above-mentioned technical problem is solved to following technical means:

the utility model provides an artery puncture needle, includes nook closing member and pipe, the coaxial line intercommunication has the installation pipe on the inlet end of pipe, the uncovered setting of the other end of installation pipe to be provided with the joint with the pencil high-speed joint of transfusion system in uncovered serving, be provided with the check valve to one-way conduction of pipe one side in the installation pipe, the tail end of nook closing member is fixed in a needle file, an organic whole is provided with on the needle file and holds the needle handle, the nook closing member is provided with multichannel evenly distributed's annular groove on being close to most advanced position, the most advanced of nook closing member is followed the opening end of installation pipe penetrates, passes follow behind the check valve the preceding tip of pipe is worn out, the needle file card is in the opening end of installation pipe.

Further, the check valve includes the valve body and installs flow stopping ball in the valve body, the valve body with the installation pipe sets up with one heart, the valve body sets up with the inner wall of installation pipe is integrative, set up the chamber of flow stopping in the valve body, the chamber of flow stopping is the round platform form, the opening that the chamber of flow stopping is close to pipe one end is greater than the opening of keeping away from pipe one end, the diameter size of flow stopping ball is greater than the diameter size of opening that pipe one end was kept away from in the chamber of flow stopping, is located it has a plurality of spacing archs to be circumference array distribution on the installation pipe inner wall between valve body and the pipe, flow stopping ball is located between spacing arch and the valve body, the needle core slides and wears to establish in the valve body.

Furthermore, the flow stopping ball is a plastic ball, and the mass of water drained by the flow stopping ball is equal to the mass of the water.

Further, the needle point of the needle core is provided with an inclined plane, and the inclined angle of the inclined plane is 30 degrees.

Further, the diameter of the stylet is the same size as the inner diameter of the catheter.

The beneficial effects of the utility model are embodied in:

the utility model is provided with a plurality of evenly distributed annular grooves at the position of the stylet close to the tip, and in the process of puncture, the position of the stylet tip can be more clearly developed on the display screen by cooperating with the ultrasonic imaging equipment, so that the doctor can more accurately position the position between the artery and the stylet, thereby avoiding the deviation between the needle point of the stylet and the artery in the process of puncture and facilitating the precise puncture of the doctor; the one-way valve which is communicated in one way is arranged in the installation tube, so that after the arterial puncture needle is inserted into an artery and the needle core is extracted, blood only flows into the installation tube and can not flow out from the open end of the installation tube, and the pollution to an operating room can not be caused; meanwhile, the artery puncture needle can be directly connected with a medicine tube of an infusion apparatus through the connector without pressing the catheter by medical staff, so that the infusion is carried out on the patient, and the operation burden of the medical staff is effectively reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic view of a conventional arterial puncture needle;

FIG. 2 is a schematic structural view of the arterial puncture needle provided by the present invention;

fig. 3 is a schematic structural view of the check valve in the arterial puncture needle provided by the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

Fig. 1 shows a schematic structural view of a conventional arterial puncture needle, in which the surface of a needle core 1 is smooth, no annular groove is provided, and no check valve is provided in an installation tube 3.

As shown in fig. 2-3, for the utility model provides a pair of artery puncture needle, including nook closing member 1 and pipe 2, coaxial line intercommunication has installation pipe 3 on the feed liquor end of pipe 2, the uncovered setting of the other end of installation pipe 3 to serve at uncovered and be provided with the joint 8 with the pencil high-speed joint of transfusion system, be provided with the check valve 9 to pipe 2 one side one-way conduction in the installation pipe 3, the tail end of nook closing member 1 is fixed in a needle file 5, an organic whole is provided with on the needle file 5 and holds needle handle 6, be provided with multichannel evenly distributed's annular groove 7 on the position that nook closing member 1 is close to most advanced, the most advanced of nook closing member 1 is followed the open end of installation pipe 3 penetrates, passes follow behind the check valve 9 the preceding tip of pipe 2 is worn out, needle file 5 cards are in the open end of installation pipe 3. The diameter of the needle core 1 is the same as the inner diameter of the catheter 2. The needle seat 5 is clamped in the installation tube 3, an inclined plane is arranged at the needle point of the needle core 1, the inclined plane has an inclination angle of 30 degrees, and the puncture of a doctor is facilitated. After the doctor pierces the needle core 1 and the catheter 2 into the artery, the doctor can pull out the needle core 1 from the catheter 2 by pressing the mounting tube 3 with one hand and holding the needle handle 6 with the other hand, and the soft catheter 2 is left in the artery.

The position of the stylet 1 close to the tip is provided with a plurality of evenly distributed annular grooves 7, and in the process of puncture, the position of the tip of the stylet 1 can be more clearly developed on a display screen by matching with an ultrasonic imaging device, so that a doctor can more accurately position the position between an artery and the stylet 1, the deviation between the needle point of the stylet 1 and the artery in the process of puncture is avoided, and the doctor can conveniently and accurately puncture; the one-way valve 9 which is communicated in one way is arranged in the installation tube 3, so that after the arterial puncture needle is inserted into an artery and the needle core 1 is drawn out, blood only flows into the installation tube 3 but cannot flow out from the open end of the installation tube 3, and the pollution to an operating room is avoided; meanwhile, the artery puncture needle can be directly connected with a medicine tube of an infusion apparatus through the connector 8 without pressing the catheter 2 by medical staff, so that the infusion is carried out on the patient, and the operation burden of the medical staff is effectively reduced.

Specifically, as shown in fig. 2, the check valve 9 includes a valve body 91 and a flow stopping ball 92 installed in the valve body 91, the valve body 91 and the installation pipe 3 are concentrically arranged, the valve body 91 and the inner wall of the installation pipe 3 are integrally arranged, a flow stopping cavity is formed in the valve body 91, the flow stopping cavity is in a circular truncated cone shape, an opening of one end of the flow stopping cavity close to the guide pipe 2 is larger than an opening of one end of the guide pipe 2, the diameter of the flow stopping ball 92 is larger than that of an opening of one end of the flow stopping cavity far away from the guide pipe 2, the flow stopping ball is located on the inner wall of the installation pipe 3 between the valve body 91 and the guide pipe 2, a plurality of limiting protrusions 93 are distributed in a circumferential array manner, the flow stopping ball 92 is located between the limiting protrusions 93 and the valve body 91, and the needle core 1 is. The flow stopping ball 92 is a plastic ball, and the mass of water discharged by the flow stopping ball 92 is the same as that of the flow stopping ball itself, so that the flow stopping ball can be pushed by blood to block the valve body 91 when the blood flows through the mounting tube 3 more quickly. After the blood flows into the mounting tube 3, the flow stopping ball 92 is pushed to be attached to the inner wall of the valve body 91, so that the flow blocking cavity inside the valve body 91 is blocked, and the blood is prevented from further flowing from the mounting tube 3. When the liquid medicine flows into the mounting tube 3 from the medicine tube of the infusion apparatus, the flow stopping ball 92 is separated from the inner wall of the valve body 91 and is limited between the limiting protrusion 93 and the valve body 91, so that the liquid medicine can normally flow in.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. An arterial puncture needle, characterized in that: comprises a needle core (1) and a conduit (2), the liquid inlet end of the conduit (2) is coaxially communicated with an installation pipe (3), the other end of the installation pipe (3) is arranged in an opening way, a joint (8) which is quickly connected with a medicine tube of the infusion apparatus is arranged on the open end, a one-way valve (9) which is communicated in one way to one side of the catheter (2) is arranged in the mounting tube (3), the tail end of the needle core (1) is fixed in a needle seat (5), a needle holding handle (6) is integrally arranged on the needle seat (5), a plurality of annular grooves (7) which are uniformly distributed are arranged at the position of the needle core (1) close to the tip end, the sharp end of the needle core (1) penetrates through the open end of the mounting tube (3), penetrates through the one-way valve (9) and then penetrates out of the front end of the catheter (2), and the needle seat (5) is clamped in the open end of the mounting tube (3).

2. An arterial puncture needle according to claim 1, characterized in that: the check valve (9) comprises a valve body (91) and a flow stopping ball (92) arranged in the valve body (91), the valve body (91) and the mounting pipe (3) are arranged concentrically, the valve body (91) and the inner wall of the mounting pipe (3) are arranged integrally, a flow blocking cavity is arranged in the valve body (91), the flow blocking cavity is in a circular truncated cone shape, the opening of the flow blocking cavity close to one end of the catheter (2) is larger than the opening of the flow blocking cavity far away from one end of the catheter (2), the diameter of the flow stopping ball (92) is larger than that of an opening at one end of the flow stopping cavity far away from the catheter (2), a plurality of limiting bulges (93) are distributed on the inner wall of the mounting pipe (3) between the valve body (91) and the catheter (2) in a circumferential array manner, the flow stopping ball (92) is positioned between the limiting protrusion (93) and the valve body (91), and the needle core (1) is arranged in the valve body (91) in a sliding penetrating mode.

3. An arterial puncture needle according to claim 2, characterized in that: the flow stopping ball (92) is a plastic ball, and the mass of water drained by the flow stopping ball (92) is equal to the mass of the water.

4. An arterial puncture needle according to claim 1, characterized in that: the needle point of the needle core (1) is provided with an inclined plane, and the inclination angle of the inclined plane is 30 degrees.

5. An arterial puncture needle according to claim 1, characterized in that: the diameter of the needle core (1) is the same as the inner diameter of the catheter (2).