CN218106002U

CN218106002U - Puncture set for hemodialysis

Info

Publication number: CN218106002U
Application number: CN202221829467.3U
Authority: CN
Inventors: 刘启佳; 栾景源
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-12-23
Anticipated expiration: 2032-07-15

Abstract

The utility model discloses a puncture suit for hemodialysis, including pjncture needle, plastic hose and water end, in addition, still include: the first port of the tee joint is used for connecting the tail part of the plastic hose; the guide wire pusher is connected with a second port of the tee joint and used for pushing the guide wire towards the plastic hose and the puncture needle; and the injector is connected with a third port of the tee joint and used for detecting blood backflow and injecting physiological saline. The utility model discloses a puncture suit, simple structure, convenient to use under the guide of seal wire at vascular intracavity propelling movement pjncture needle, can effectively avoid the puncture needle point to the damage of vascular wall, avoid blood splash, reduce the infection risk, puncture process safety, airtight, aseptic, can be by 1 people independent operation.

Description

Puncture set for hemodialysis

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a puncture suit for hemodialysis.

Background

Hemodialysis with an internal arteriovenous fistula of the upper limb is the most commonly used method for kidney replacement therapy of uremia patients. Each dialysis requires a puncture of an internal veneral fistula in the upper limb and a needle is left for dialysis. The literature reports and clinical practice prove that the process of puncturing the blood vessel and pushing the needle tip to the far end of the blood vessel easily causes damage to the intima and the blood vessel wall of the blood vessel, and is one of the most common reasons for inducing excessive intimal hyperplasia, vessel lumen stenosis and hematoma around the blood vessel. In addition, the blood vessel of a patient undergoing long-term dialysis is easy to generate walking tortuosity and local stenosis, so that the difficulty of the puncture process is higher, and the probability of causing additional injury to the blood vessel is higher.

At present, the most commonly used blood puncture set comprises 3 parts, namely a puncture needle, a plastic hose and a water stopper, and can be used for puncturing blood vessels with thick blood vessels and straight blood vessels. However, for some patients with thin vessel diameter, tortuous vessel shape and deep vessel, the probability that the needle tip damages the intima of the vessel and even penetrates the vessel wall is increased when the product is used for puncturing the vessel successfully, especially when the puncture needle is pushed to a farther position in the vessel cavity, and complications such as vessel intimal hyperplasia, vessel lumen stenosis and hematoma around the vessel are easily caused. In order to avoid the injury of the needle point to the blood vessel wall in the clinical situation, the guide wire can be entered from the far end of the plastic hose, and the puncture needle is pushed under the guide of the guide wire. However, the operation must be performed by an assistant, which is relatively troublesome, and the plastic tube must be opened during the process of introducing the guide wire, which easily causes blood splash, increases the risk of infection, and increases the psychological burden of the patient.

Disclosure of Invention

The utility model aims at solving the above-mentioned problem that prior art exists, provide a puncture suit that is used for hemodialysis patient puncture arteriovenous internal fistula, its simple structure, convenient to use under the guide of seal wire at vascular intracavity propelling movement pjncture needle, can effectively avoid the puncture needle point to the damage of vascular wall, avoid blood splash, reduce the infection risk, puncture process safety, airtight, aseptic can be by 1 people independent operation.

In order to realize the above object of the present invention, the utility model provides a puncture suit for hemodialysis, including pjncture needle, plastic hose and water end, in addition, still include: the first port of the three-way pipe is used for connecting the tail part of the plastic hose; the guide wire pusher is connected with a second port of the tee joint and used for pushing the guide wire towards the plastic hose and the puncture needle; and the injector is connected with the third port of the tee joint and is used for checking blood backflow and injecting physiological saline.

Preferably, the tail part of the plastic hose is detachably connected with the first port of the tee joint.

Preferably, the guide wire pusher is detachably connected with the second port of the tee joint.

Preferably, the guide wire pusher is provided with a barrel and a pushing piston capable of reciprocating in the barrel, and the guide wire is connected with the pushing piston.

Preferably, the front end of the barrel is provided with a connector, and the connector is detachably connected with the second port of the tee joint.

Preferably, the nipple of the syringe is detachably connected to the third port of the tee.

Compared with the prior art, the utility model discloses a puncture suit for hemodialysis has simple structure, and convenient to use under the guide of seal wire at vascular intracavity propelling movement pjncture needle, can effectively avoid the puncture needle point to the damage of vascular wall, avoids blood splash, reduces the infection risk, and puncture process safety, airtight, aseptic can be by 1 people autonomous operation's advantage.

The following describes embodiments of the present invention in detail with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic view of a puncture kit for hemodialysis according to an embodiment of the present invention;

FIG. 2 is a schematic view of the water stopper of the embodiment of the present invention;

fig. 3 is a schematic view of the puncture outfit according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1, for the embodiment of the present invention provides a schematic structural diagram of a puncture set (except water stop) for hemodialysis, fig. 2 is a schematic structural diagram of a water stop of the embodiment of the present invention, and as can be seen from the figure, the puncture set for hemodialysis of the present embodiment includes a puncture needle 1, a plastic hose 2 and a water stop 6, and in addition, further includes: a first port of the tee joint is used for connecting with the tail part of the plastic hose; the guide wire pusher 4 is connected with a second port of the tee joint and is used for pushing the guide wire 7 towards the plastic hose and the puncture needle; and the injector 5 is connected with the third port of the tee joint and is used for checking blood backflow and injecting physiological saline.

In order to avoid carrying out the upper limbs artery and vein internal fistula puncture to hemodialysis patient, the needle point of pjncture needle causes the damage to patient's vascular wall, avoids blood splash, reduces the infection risk, and this embodiment puncture suit improves the puncture suit of prior art including pjncture needle 1, plastic hose 2 and water end 6, has formed the sealed suit of built-in seal wire.

Specifically, as shown in fig. 1 and fig. 2, the puncture set of this embodiment includes a puncture needle 1, a plastic tube 2, and a water stopper 6, as well as a guide wire pusher 4 and an injector 5 that can contain a guide wire, and both the guide wire pusher and the injector are connected with the plastic tube 2 through a tee 3.

The guide wire pusher is provided with a cylinder body and a pushing piston, one end of the pushing piston is arranged in the cylinder body, the other end of the pushing piston extends out of the cylinder body and can move in the cylinder body in a reciprocating mode under the action of external force, and the guide wire is connected with the pushing piston. During manufacturing, the pushing piston can be made of elastic materials, such as rubber, and the guide wire can be inserted into the pushing piston, or the pushing piston can also be made of non-elastic materials, and a counter bore for the guide wire to be inserted is formed in the center. The front end of the barrel is provided with a connector which is connected with one port of the tee joint. The guide wire can adopt a 0.035 inch ultra-smooth guide wire, and the head end is soft. After the guide wire is connected with the pushing piston and the connector is connected with the tee joint, the front end of the guide wire sequentially passes through the tee joint 3 and the plastic hose 2 and is left in a needle cavity of the puncture needle 1, and when puncture is carried out, the pushing piston can be pushed according to needs to enable the guide wire to move forwards to penetrate out of a needle point of the puncture needle and enter a blood vessel of a patient, so that the puncture needle can be pushed down under the guide of the guide wire.

In order to evaluate the forward moving distance of the guide wire pushed by the guide wire pusher, scales can be marked on a cylinder body of the guide wire pusher, so that the observation is more direct, and the pushing is more accurate. During manufacturing, the guide wire pusher can adopt the structure of an injector.

The injector 5 is communicated with the plastic hose 2 and the puncture needle 1 through a tee joint, so that whether the blood of the patient flows back or not can be detected when the puncture operation is performed on the patient, and the physiological saline can be pushed by the injector to flush each lumen of the set. The structure of the syringe of the embodiment can adopt the structure of a common syringe in medical treatment in the prior art, and the volume is about 5 ml.

The three-way valve is provided with a first port, a second port and a third port, wherein the first port and the second port are coaxial, the third port is perpendicular to the central connecting line of the first port and the second port, the first port of the three-way valve is detachably connected with the tail part of the plastic hose, the second port of the three-way valve is detachably connected with the guide wire pusher, and the third port of the three-way valve is detachably connected with a nipple of the injector. The detachable connection can be a threaded connection, an insertion connection (such as connection of a connector of the guide wire pusher and a syringe nipple with a second port and a third port of the tee joint in fig. 1), or a sleeve connection (such as connection of a first port of the tee joint and the tail of the plastic hose in fig. 1).

Next, the use of the puncture set of the present embodiment is described.

The physiological saline is pumped in the injector, the guide wire is arranged on a pushing piston of the guide wire pusher, the tee joint is respectively connected with the tail part of the plastic hose, the injector nipple and the connecting part of the guide wire pusher, and the front end of the guide wire sequentially passes through the tee joint 3 and the plastic hose 2 and is left in the needle cavity of the puncture needle 1.

The normal saline is injected by an injector to wash the tube cavities of the three-way valve 3, the plastic hose 2 and the puncture needle 1, so that the air in each part of the whole puncture set is emptied and the ultra-smooth guide wire is lubricated.

An operator holds the puncture needle with one hand (usually the right hand) to conventionally puncture the upper limb blood vessel of a patient, and withdraws the injector with the other hand (usually the left hand) to ensure that negative pressure is formed in the lumen of each part of the puncture set. Then the plastic hose (adopting a transparent medical hose) is observed, and blood enters the plastic hose to indicate that the needle point of the puncture needle enters the blood vessel cavity of the patient.

The operator holds the puncture needle with the right hand and slowly pushes the pushing piston of the guide wire pusher with the left hand, so that the soft head at the front end of the ultra-smooth guide wire hidden in the puncture needle enters the blood vessel cavity. The distance of the guide wire entering the blood vessel cavity is evaluated through scales marked on the guide wire pusher, and the guide wire can enter 4cm generally. In the operation process, the puncture needle, the plastic hose and the guide wire pusher are kept in a flat state as much as possible, so that the guide wire pushing is facilitated.

After the guide wire is pushed, the guide wire pusher is fixed by the right hand of an operator to keep the head end of the guide wire immovable in a blood vessel, and the puncture needle is slowly pushed by the left hand along the direction of the front end of the guide wire to enable more needle bodies to enter the blood vessel, usually 2 cm. When the left hand draws back the syringe, blood reflows into the plastic hose, the needle point is shown to be still positioned in the blood vessel cavity again, and the physiological saline in the syringe is pushed to wash the tube cavities of all the parts in the set.

After the flushing of the tube cavities of the components of the sprint sleeve, closing the water on the plastic hose; the connection between the plastic hose and the tee joint is released, the tee joint, the guide wire pusher and the injector are removed, the removal process needs to be carried out slowly and carefully, and the guide wire is ensured to be taken out completely.

After the puncture needle is placed, the tail end of the plastic hose is connected with a dialysis instrument for dialysis.

In conclusion, the puncture set for hemodialysis has the advantages of simple structure and convenient use, can be independently operated by the doctor 1, does not need assistant cooperation, and saves labor; the guide wire is arranged in the guide wire pusher, so that the guide wire can penetrate through the plastic hose and the puncture needle in a closed environment, and the whole puncture process is safe, closed and sterile; the puncture needle is pushed in the blood vessel cavity under the guidance of the guide wire, so that the damage of the puncture needle point to the blood vessel wall can be effectively avoided, the blood splashing is avoided, and the infection risk is reduced; the physiological saline in the injector is used for checking blood backflow and flushing the tube cavities of all parts in the set, so that the puncture success rate is improved, the puncture safety and sterility are ensured, and the pain and psychological burden of a patient are relieved.

Although the embodiment of the present invention has been described in detail, the embodiment of the present invention is not limited thereto, and those skilled in the art can modify the principle of the embodiment of the present invention, and therefore, various modifications according to the principle of the embodiment of the present invention should be understood as falling into the scope of the embodiment of the present invention.

Claims

1. The utility model provides a puncture suit for hemodialysis, includes pjncture needle, plastic hose and water end, its characterized in that still includes:

the first port of the three-way pipe is used for connecting the tail part of the plastic hose;

the guide wire pusher is connected with a second port of the tee joint and used for pushing the guide wire towards the plastic hose and the puncture needle;

and the injector is connected with the third port of the tee joint and is used for checking blood backflow and injecting physiological saline.

2. The puncture kit of claim 1, wherein the plastic hose tail is removably connected to the first port of the tee.

3. The puncture kit of claim 1, wherein the guidewire pusher is removably coupled to the second port of the tee.

4. The puncture kit of claim 3, wherein the guide wire pusher has a barrel and a pushing piston reciprocally movable within the barrel, the guide wire being connected to the pushing piston.

5. The puncture kit of claim 4, wherein the front end of the barrel is provided with a connector that is detachably connected to the second port of the tee.

6. The puncture kit of claim 1, wherein the nipple of the syringe is removably connected to the third port of the tee.