CN214906834U

CN214906834U - Artery indwelling needle assembly

Info

Publication number: CN214906834U
Application number: CN202120076325.3U
Authority: CN
Inventors: 高菲; 吴春亚
Original assignee: Tongxiang First Peoples Hospital
Current assignee: Tongxiang First Peoples Hospital
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-11-30
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses an artery indwelling needle assembly, which comprises a puncture assembly, a needle holder and a needle holder, wherein the puncture assembly is provided with a sharp end and can be punctured into an artery vessel of a patient; the indwelling component is sleeved on the puncture component and is placed in the artery blood vessel of the patient along with the puncture component and then is indwelling in the patient; the duckbill valve is arranged in the indwelling component and sleeved on the puncture component, and is automatically closed under the action of arterial blood pressure after the puncture component is pulled out; external pipe, after puncture component extracts, external pipe can dismantle with the subassembly of keeping somewhere and be connected just external pipe struts behind the duckbilled valve with keep somewhere subassembly liquid looks UNICOM. Through above-mentioned structure, can effectively guarantee that the blood in the artery is unlikely to spray out when medical personnel pull out the puncture subassembly, and then guaranteed medical personnel's safety and the clean and tidy of environment.

Description

Artery indwelling needle assembly

Technical Field

The utility model relates to a medical appliance, in particular to an artery indwelling needle assembly.

Background

The artery indwelling needle has a plurality of advantages, is used for invasive artery continuous monitoring, can observe the blood pressure change of a patient in real time, has high accuracy, and can more effectively guide clinical treatment or rescue of the patient; the device is used for blood drawing detection, can avoid blood vessel injury caused by repeated puncture, relieve the pain of patients, prevent cross infection, open up an artery 'green channel' for the rescue of critically ill patients, and reduce the workload of nursing staff and the like. Therefore, the artery indwelling needle is widely used clinically.

At present, the artery indwelling needle which is commonly used clinically is replaced by a direct-through disposable vein indwelling needle. In actual operation, because the arterial pressure of the human body is high, once the puncture assembly is taken out after the arterial puncture is carried out and the indwelling assembly is placed, although the artery where the indwelling assembly is located is pressed, blood still inevitably flows out of the pipe sleeve when the port of the indwelling assembly is connected with the extension pipe joint of the pressure sensor. And the operation of pressing the artery at the indwelling component and connecting the pressure sensor extension pipe joint is often difficult to be independently completed by one person, and needs assistance of other people, so that the operation is very inconvenient. If the position of the artery where the indwelling component is pressed is inaccurate or the extension pipe joint connected with the pressure sensor is not smooth, the amount of blood flowing out of the pipe sleeve can reach 5-25 m1, which is not only unfavorable for patients, but also seriously pollutes the environment, especially for diseases which can be transmitted by blood, such as: hepatitis C, AIDS, hepatitis B with three positive signs, syphilis, etc., the consequences are more serious, and the personal safety of medical care personnel is seriously threatened.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned disadvantages, an object of the present invention is to provide an arterial indwelling needle assembly which can effectively overcome the above-mentioned disadvantages.

In order to achieve the above purpose, the technical scheme of the utility model is that:

an artery indwelling needle assembly comprises

A puncture assembly having a sharpened end and being pierceable into an arterial blood vessel of a patient;

the indwelling component is sleeved on the puncture component and is placed in the artery blood vessel of the patient along with the puncture component and then is indwelling in the patient;

the duckbill valve is arranged in the indwelling component and sleeved on the puncture component, and is automatically closed under the action of arterial blood pressure after the puncture component is pulled out;

external pipe, after puncture component extracts, external pipe can dismantle with the subassembly of keeping somewhere and be connected just external pipe struts behind the duckbilled valve with keep somewhere subassembly liquid looks UNICOM.

Furthermore, a needle protection cap is sleeved on the puncture assembly, and the sharp end of the puncture assembly is arranged in the needle protection cap.

Further, the inner surface of the duckbill valve is plated with a puncture-resistant layer.

Further, keep somewhere the subassembly including keeping somewhere the hose, keep somewhere the hose tail end coaxial setting rather than the pipe box of liquid looks UNICOM, the sealed setting in the pipe box of duckbilled valve, the duckbilled valve is by being close to the one end of keeping somewhere the hose to keeping away from the setting of the one end flaring gradually of keeping somewhere the hose.

Further, the puncture subassembly includes the puncture steel needle, and puncture steel needle tail end sets up rather than the needle file of liquid looks UNICOM, works as after the puncture steel needle inserts to keeping somewhere in the hose, duckbilled valve is attached on the lateral wall of puncture steel needle.

Furthermore, a blood channel is axially arranged in the needle seat, a plugging tube is detachably inserted in the blood channel, and micropores are formed in the plugging tube so that the blood channel is communicated with the external gas phase through the micropores.

Further, external pipe includes can dismantle the connection cap of being connected with the pipe box, sets up coupling hose on the outside terminal surface of connecting the cap, sets up the contact pin on the medial surface of connecting the cap, contact pin and coupling hose liquid phase UNICOM, the connection cap loads on the pipe box back contact pin and struts the duckbilled valve and switches on with keeping somewhere the hose liquid phase.

The working principle is as follows: when patient need put into the artery in the artery and keep somewhere the needle, medical personnel fix a position patient artery position in advance, then insert the puncture subassembly into patient's artery, after the puncture is successful, medical personnel push the subassembly of keeping somewhere that the cover was established on the puncture subassembly into patient's artery again, extract the puncture subassembly afterwards. When the spike assembly is withdrawn, the duckbill valve is forced into a closed state by pressure from the arterial vessel. It should be noted that, in the present invention, the higher the blood pressure in the arterial blood vessel is, the larger the direction pressure applied to the duckbill valve is, and the better the sealing effect of the duckbill type closed tube is.

Has the advantages that: through above-mentioned structure, can effectively guarantee that the blood in the artery is unlikely to spray out when medical personnel pull out the puncture subassembly, and then guaranteed medical personnel's safety and the clean and tidy of environment.

Drawings

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

fig. 2 is an exploded view of the present invention;

FIG. 3 is a cross-sectional view of the spike assembly after being withdrawn from the retention assembly;

fig. 4 is a sectional view of the indwelling assembly connected to the external catheter after the puncture assembly is removed.

Reference numerals: 100. the puncture assembly 110, the puncture steel needle 120, the needle holder 121, the blood channel 130, the blocking tube 131, the micropores 200, the indwelling assembly 210, the indwelling hose 220, the tube sleeve 300, the duckbill valve 310, the puncture-resistant layer 400, the external catheter 410, the connecting cap 420, the connecting hose 430, the insertion needle 500 and the needle protection cap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

An arterial indwelling needle assembly includes a puncture assembly 100, an indwelling assembly 200, and a duckbill valve 300. Wherein, puncture assembly has sharp end, can be light pierce the puncture assembly to patient's artery blood vessel through this sharp end medical personnel. The indwelling component is sleeved on the puncture component, when the puncture component is punctured into an arterial blood vessel of a patient, medical personnel pushes the indwelling component towards the arterial blood vessel direction of the patient to push the indwelling component into the arterial blood vessel, and then the indwelling component entering the arterial blood vessel of the patient is pulled out and then is indwelling in the patient, so that the communication between the inside of the arterial blood vessel and the outside is realized. In order to prevent the arterial blood from being sprayed out of the indwelling component after the puncture component is pulled out, the duckbill valve is arranged in the indwelling component to play a role in sealing the indwelling component. It should be noted that the duckbill valve is made of a flexible thin-film thin-wall material and can realize self-closing under the pressure of arterial blood. In particular embodiments, duckbill valves may be used in PE, PP, PET, and the like. And the internal surface of the duckbill valve is smooth so as to improve the sealing performance after the duckbill valve is closed. And for the convenience of follow-up arterial blood sampling, arterial blood pressure monitoring and the like, the utility model discloses still include an external pipe 400. Specifically, one end of the external catheter can be detachably connected with the indwelling component after the puncture component is pulled out. After the external catheter is installed on the indwelling component, the external catheter is communicated with the indwelling component through a liquid phase after the closed duckbill valve is opened by the external catheter. In this embodiment, the external catheter has a connection function at the end not connected with the indwelling component, and can be connected with an arterial pressure detection device or an arterial drainage device.

As a further improvement of the above embodiment, in order to ensure the safety during use and transportation, the utility model discloses still have needle protection cap 500, this needle protection cap detachable suit is on the puncture assembly to the sharp end of guaranteeing the puncture assembly when not using is located the needle protection cap.

As a further improvement of the above embodiment, in order to ensure the safety of the duckbill valve in use, i.e. effective sealing. A puncture resistant layer 310 is plated on the interior surface of the duckbill valve. Specifically, the puncture-resistant layer can be made of a puncture-resistant material such as carbon fiber and Kevlar. Through setting up resistant thorn layer, can effectively promote puncture subassembly or other sharp objects and alternate the number of times in the duckbill valve.

As a further improvement of the above embodiment, the indwelling assembly 200 specifically includes an indwelling hose 210, and a socket 220 coaxially connected to the trailing end of the indwelling hose. The sleeve is in liquid phase communication with the indwelling hose. The duckbill valve is disposed in the sleeve. Specifically, the duckbill valve is gradually flared from one end close to the retention hose to one end far away from the retention hose. According to the structure, after the puncture assembly is pulled out, arterial blood enters the pipe sleeve through the retention hose, then the pipe sleeve is filled with the arterial blood and a squeezing effect is generated on the duckbill valve, and the duckbill valve can be closed by the squeezing effect. In addition, according to the working principle of the duckbill valve, the larger the arterial blood pressure is, the larger the extrusion acting force acting on the duckbill valve is, and the better the sealing performance of the duckbill valve is. In addition, it should be noted that, in the specific production process, in order to facilitate the fixation of the duckbill valve in the tube sleeve, the duckbill valve may be welded to the end surface of the tube sleeve after being turned outwards in an ultrasonic welding manner.

As a further improvement to the above embodiment, the puncture assembly 100 includes a puncture steel needle 110 and a needle hub 120 disposed at the trailing end of the puncture steel needle and coaxially connected thereto. It should be noted that the puncture steel needle is in liquid phase communication with the needle seat. When the puncture assembly is assembled in place, the puncture steel needle is inserted into the indwelling hose. Simultaneously, the duckbill valve is attached on the lateral wall of puncture steel needle then, and then realizes keeping somewhere the sealed of subassembly, prevents to appear blood by keeping somewhere the spun phenomenon in the subassembly when puncture subassembly is not pulled out. Preferably, in order to prevent the steel needle from bending when not in use, a part of the needle base can be inserted into the pipe sleeve. To act as a stiffening restraint.

As a further improvement of the above embodiment, in order to facilitate the medical staff to judge whether the puncture assembly has been inserted into the artery of the patient, a blood passage 121 is axially arranged in the needle holder, and an occlusion tube 130 is detachably inserted in the blood passage. Specifically, the plugging tube is provided with micropores 131. Through the micropores, gas-phase communication is realized between the blood channel and the outside. That is, when the puncture subassembly pierces to patient's arterial line, blood gets into to the blood passageway via the puncture steel needle under the blood pressure effect, and medical personnel can see through the audio-visual artery blood flow inflow of observing bright red of needle file this moment to the blood passageway in, then medical personnel can judge that the puncture subassembly puncture targets in place this moment, and then can push to patient internal with keeping somewhere the subassembly. And the micropores on the blocking tube are used for discharging air in the blood channel after the arterial blood vessel is punctured so as to facilitate the blood to enter the blood channel. It should be noted that the small pores allow the gas to be discharged but not the blood to prevent the blood from flowing out unnecessarily.

As a further improvement of the above embodiment, the external connection catheter 400 preferably includes a connection cap 410 detachably connected to the catheter sleeve, and a connection hose 420 is provided on an outer end surface of the connection cap, and an end of the connection hose not connected to the connection cap has a connection terminal (not shown), preferably a luer connector. And a pin 430 is provided on an inner sidewall of the coupling cap. Specifically, the contact pin is in fluid communication with the connecting hose. When the connecting cap is connected with the pipe sleeve, the contact pin opens the duckbill valve to enable the contact pin to be communicated with the liquid phase of the indwelling hose. It should be noted that, in order to facilitate the insertion of the insertion pin into the duckbill valve, the end of the insertion pin remote from the connection hose is tapered.

Claims

1. An arterial indwelling needle assembly, comprising: comprises that

2. The arterial indwelling needle assembly of claim 1, wherein: the puncture assembly is sleeved with a needle protection cap, and the sharp end of the puncture assembly is arranged in the needle protection cap.

3. The arterial indwelling needle assembly of claim 1, wherein: and a puncture-resistant layer is plated on the inner surface of the duckbill valve.

4. An arterial indwelling needle assembly according to any one of claims 1 to 3, wherein: keep somewhere the subassembly including keeping somewhere the hose, keep somewhere the hose tail end coaxial setting rather than the pipe box of liquid looks UNICOM, the sealed setting in the pipe box of duckbilled valve, the duckbilled valve is by the one end that is close to keeping somewhere the hose to keeping away from the setting of the one end flaring gradually of keeping somewhere the hose.

5. The arterial indwelling needle assembly of claim 4, wherein: the puncture assembly comprises a puncture steel needle, the tail end of the puncture steel needle is provided with a needle seat communicated with the liquid phase of the puncture steel needle, and when the puncture steel needle is inserted into the indwelling hose, the duckbill valve is attached to the outer side wall of the puncture steel needle.

6. The arterial indwelling needle assembly of claim 5, wherein: the blood channel is axially arranged in the needle seat, the plugging tube is detachably inserted in the blood channel, and the plugging tube is provided with micropores so that the blood channel is communicated with the external gas phase through the micropores.

7. The arterial indwelling needle assembly of claim 6, wherein: the external catheter comprises a connecting cap detachably connected with the pipe sleeve, a connecting hose is arranged on the end face of the outer side of the connecting cap, a contact pin is arranged on the end face of the inner side of the connecting cap, the contact pin is communicated with the liquid phase of the connecting hose, and the connecting cap is loaded on the pipe sleeve and then the contact pin props up the duckbill valve to be communicated with the liquid phase of the indwelling hose.