CN110599879A - Venous catheter tube washing and sealing teaching device and method - Google Patents

Abstract

The invention relates to the field of medical teaching instruments, in particular to a teaching device and method for flushing and sealing an intravenous catheter, comprising a base, a rubber layer for simulating human skin, and a blood vessel body for simulating human blood vessels, the base A blood vessel body is arranged inside the base to provide liquid, a drain port that communicates with the blood vessel body inside the base is arranged on the base, a plug cover is installed on the drain port, a rubber layer is arranged on the top of the base, and the blood vessel is The body is formed of thin rubber to simulate human blood vessels and is connected to the lower part of the rubber layer. The teaching device further comprises an intravenous catheter and a syringe, the intravenous catheter is inserted into the blood vessel through the rubber layer, and the syringe can be connected with the intravenous catheter. To achieve the purpose of teaching evaluation, observe the mixing effect of the blood vessel body and the fluid in the venous catheter when the tube is flushed and sealed. The device has the advantages of simple structure, low cost and obvious practical effect.

Description

Intravenous catheter flushing and sealing teaching device and method

technical field

The invention relates to the field of medical teaching, in particular to a teaching device and method for flushing and sealing an intravenous catheter.

Background technique

With the gradual improvement of the current medical level, the requirements for nursing work are becoming more and more strict. In addition to strictly mastering theoretical knowledge, they also have operational skills. Intravenous catheters such as venous indwelling needles are medical devices used for multiple infusion therapy. When the medical staff uses the venous catheter to puncture the patient's blood vessels, the puncture needle is pulled out from the indwelling catheter, leaving a relatively soft venous catheter indwelling in the human body. In blood vessels, fluids are given intermittently through intravenous catheters. After each infusion is completed, it is necessary to flush and seal the tube, which is a big challenge for clinical nurses, especially those with less experience, and requires a long time of practice to achieve the goal.

In clinical teaching, sometimes a syringe is used to demonstrate the techniques of pulse flushing and positive pressure sealing. In the process of specific operation, it is found that this method cannot judge the accuracy of the students' techniques, it is not convenient to display it intuitively, and it is impossible to measure and judge the flushing. And the correctness and effect of students' operation in the practice of sealing tube teaching. When practicing the puncture of the venous catheter, the currently used practical teaching aids are expensive, easy to damage and need to be replaced frequently, and the effect of flushing and sealing the tube cannot be observed. , making teaching difficult to carry out effectively.

SUMMARY OF THE INVENTION

In view of this, the present invention aims to provide a teaching device and method for venous catheter flushing and sealing. The venous catheter flushing and sealing teaching device is convenient for observing and evaluating the correctness and accuracy of the operation of nurse trainees, and has a simple and reasonable structure. The cost is low and the effect is obvious and practical.

In order to achieve the above object, one aspect of the present invention provides a teaching device for flushing and sealing an venous catheter, comprising a base, a blood vessel body is arranged inside the base for supplying liquid, and a connection with the base is provided on the base. a drain port of the blood vessel body inside the seat, a plug cover is installed on the drain port;

A rubber layer for simulating human skin, the rubber layer is arranged on the top of the base;

The blood vessel body is formed of thin rubber for simulating human blood vessels, and is connected to the lower part of the rubber layer.

Preferably, the bottom surface of the base is a horizontal plane or a concave U-shaped surface; and/or, the bottom surface of the base is frosted.

Preferably, both sides of the base are provided with fixing straps for fixing the base.

Preferably, the fixing strap is a nylon Velcro or a snap-fit structure.

Preferably, the base, the rubber layer and the vascular body are all formed of transparent materials.

Preferably, the teaching device further comprises an intravenous catheter and a syringe, the intravenous catheter can be inserted into the blood vessel through the rubber layer, and the syringe can be connected to the intravenous catheter.

The present invention also provides a teaching method for flushing and sealing a tube using an venous catheter. The method is carried out in the above-mentioned teaching device, and the method includes the following steps:

S1. Fill the vascular body of the base with physiological saline, and puncture the puncture needle of the venous catheter into the vascular body through the rubber layer;

S2. Add a colored liquid that is easy to distinguish colors into the syringe, and connect the syringe to the intravenous catheter;

S3. Carry out the pipe flushing and sealing operation.

Preferably, the step S3 is to judge the correctness and effectiveness of the flushing and sealing operation according to the mixing condition of the colored liquid in the syringe and the venous catheter and the physiological saline of the vascular body.

In the prior art, the teaching aids for tube flushing and tube sealing are expensive. The teaching device for tube flushing and tube sealing of the venous catheter of the present invention simulates human skin through a rubber layer, simulates the forearm of a human body by setting a base, and passes through the vascular body formed by thin rubber. to simulate human blood vessels; set a drain port to facilitate adding and replacing liquid; further cooperate with intravenous catheters to complete puncture teaching; using the teaching method of the teaching device of the present invention, by adding physiological saline into the blood vessel, the syringe is filled with colored liquid that is easy to distinguish between colors, Through the liquid mixing effect of the syringe and the venous catheter, the evaluation of the flushing and tube sealing teaching is completed. The results are intuitive and clear, which is convenient for evaluating the correctness and accuracy of the students' operation. The device has the advantages of simple structure and low manufacturing cost, and is easy to be popularized and used in hospitals and schools.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide further understanding of the present invention, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

In the attached image:

Fig. 1 is the structural representation of the teaching device of venous catheter flushing and sealing according to the present invention;

Fig. 2 is the sectional view of the A-A direction of the venous catheter flushing tube sealing teaching device of the present invention;

FIG. 3 is a partial top view of the teaching device for flushing and sealing the venous catheter according to the present invention.

Description of reference numerals

10-Base 101-Drain port

102-plug cover 103-fixed cable tie

20-rubber layer 30-thin rubber

301-Vascular body 40-Venous catheter

50-syringe

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

In the present invention, unless otherwise stated, the directional words used such as "up, down, left and right" generally refer to up, down, left and right as shown in Fig. 1 and Fig. 2; " "Inside and outside" means inside and outside relative to the contours of each component itself. The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Referring to FIGS. 1 to 3 , the present invention provides an intravenous catheter flushing tube sealing teaching device, including a base 10 , a blood vessel body 301 is provided inside the base 10 for supplying liquid, and the base 10 There is a drain port 101 communicating with the blood vessel body 301 inside the base 10, and a plug cover 102 is installed on the drain port 101; a rubber layer 20 for simulating human skin, the rubber layer 20 is arranged on the the top of the base 10 ; the blood vessel body 301 is formed of thin rubber 30 to simulate human blood vessels, and is connected to the lower part of the rubber layer 20 .

The drain port 101 is communicated with the blood vessel body 301, and is used for adding liquid to the blood vessel body 301 or discharging the liquid, which is convenient for replacing the liquid in the blood vessel body 301, so as to achieve the repeated use of the venous catheter flushing tube sealing teaching device and replace the liquid. The rear vascular body 301 is also convenient to observe the effect of tube sealing teaching, and the top of the base 10 is formed by the rubber layer 20 to achieve the purpose of simulating human skin.

Further, the bottom of the base 10 is in a concave arc, U-shape, straight line or suitable shape so that the base 10 can be matched with the human forearm, or the base 10 can be easily fixed so that the base 10 can be easily fixed during use. It can achieve the effect of simulating the medical scene, and it is more stable and convenient for the implementation of puncture, flushing and sealing.

In a preferred embodiment of the present invention, two sides of the base 10 are provided with fixing straps 103 for fixing the base 10. The fixing straps 103 are connected by a nylon Velcro or a buckle structure. After the seat 10 is matched with the forearm, the base 10 and the forearm are fixed together with the fixing strap 103, so as to prevent the shaking during puncturing, flushing and sealing the tube and affect the teaching effect; or place the base 10 on the desktop, Then, use the fixing band 103 to fasten it tightly, so that the teaching device for flushing and sealing the venous catheter can be stably installed.

Further, the base 10 , the blood vessel body 301 and the rubber layer 20 are all formed of transparent materials, so that the teaching steps or the operations of the students can be observed more intuitively during the teaching process.

Further, the venous catheter flushing tube sealing teaching device also includes an venous catheter 40 and a syringe 50, the indwelling needle 50 can be inserted into the vascular body 301 through the rubber layer 20 to complete the puncture teaching; the syringe 50 It can be connected with the venous catheter 40 to complete the teaching of flushing and sealing.

The method for teaching flushing and sealing by utilizing the venous catheter flushing and sealing teaching device of the present invention includes:

S1. Fill the vascular body 301 of the base 10 with physiological saline, and puncture the puncture needle of the venous catheter 40 into the vascular body 301 through the rubber layer 20;

S2. add the colored liquid that is easy to distinguish the color in the syringe 50, and connect the syringe 50 with the venous catheter 40;

S3. Carry out the pipe flushing and sealing operation.

Wherein, the step S3 adopts the flushing method of pushing and stopping the colored flushing fluid in the syringe 50 to form a small vortex in the venous catheter 40 when flushing the tube, and adopting positive pressure sealing when sealing the tube; or non-positive pressure If the connector is connected, the syringe 50 needs to inject the colored liquid to seal the tube while the syringe 50 is retracted from the intravenous catheter 40 to maintain the positive pressure state in the intravenous catheter 40 .

Specifically, when teaching the tube sealing, push the colored tube sealing solution in the syringe 50 to the remaining 0.5ml, and use the above-mentioned method of withdrawing the needle while pushing the liquid medicine to pull out the needle of the syringe 50, and the injection speed is greater than Needle withdrawal speed; or, push the colored tube sealing solution in the syringe 50 to the remaining 0.5ml, and use a small medical clip to clamp the venous catheter 40; The clip is pushed to the bottom so that the extension tube of the intravenous catheter 40 is clamped, and the needle of the syringe 50 is withdrawn while pushing.

Step S3 is to judge the correctness and effectiveness of the flushing and sealing operation according to the mixing situation of the physiological saline and colored liquid in the syringe 50 , the vascular body 301 and the venous catheter 40 .

In the present invention, the vascular body 301 is filled with physiological saline, and the liquid provided by the syringe 50 is a colored liquid that can be easily distinguished from the physiological saline. By observing the mixture of normal saline and colored liquids, we can judge whether the students’ flushing and sealing operations are correct and accurate; at the same time, it is also convenient for students to learn and master the flushing and sealing operations during the teaching process, which can greatly improve the teaching quality.

During the teaching process, the physiological saline in the vascular body 301 is mixed with the colored liquid. As the number of flushing and sealing teaching increases, the physiological saline should be replaced through the drain port 101 in time to prevent the physiological saline in the vascular body 301 and the syringe 50 The color of the colored liquid is not easy to distinguish, which affects the teaching effect or cannot accurately evaluate the accuracy of the student's operation.

The basic structure, operation method and advantages of the present invention have been described in detail above, but the present invention is not limited thereto. For example, the venous catheter in the present invention can also be an indwelling needle. Within the scope of the technical concept of the present invention, Various simple modifications can be made to the technical solutions of the present invention, including combining various technical features in any other suitable manner. These simple modifications and combinations should also be regarded as the contents disclosed in the present invention, and belong to the protection scope of the present invention.

Claims (8)

1. The utility model provides a venous catheter wash tub tube sealing teaching device which characterized in that includes:

the blood vessel drainage device comprises a base (10), wherein a blood vessel body (301) is arranged in the base (10) and used for providing liquid, a liquid drainage port (101) communicated with the blood vessel body (301) in the base (10) is formed in the base (10), and a plug cover (102) is installed on the liquid drainage port (101);

the rubber layer (20) is used for simulating the skin of a human body, and the rubber layer (20) is arranged on the top of the base (10);

the blood vessel body (301) is formed by thin rubber (30) and used for simulating a human blood vessel, and is connected to the lower part of the rubber layer (20).

2. Instructional device according to claim 1, characterized in that the bottom surface of the base (10) is a horizontal surface or a concave U-profile; and/or the bottom surface of the base (10) is frosted.

3. Instructional device according to claim 1, characterized in that the base (10) is provided on both sides with securing ties (103) for securing the base (10).

4. Instructional device according to claim 3, characterized in that the securing tie (103) is a nylon velcro or a snap-on construction.

5. Instructional device according to claim 1, characterized in that said base (10), said rubber layer (20) and said vascular body (301) are made of transparent material.

6. Instructional device according to claim 1, characterized in that it further comprises an intravenous catheter (40) and a syringe (50), said intravenous catheter (40) being insertable into said vascular body (301) through said rubber layer (20), said syringe (50) being connectable to said intravenous catheter (40).

7. A method for teaching the closing of an intravenous catheter during flushing, the method being performed in the teaching device of any one of claims 1-6, the method comprising the steps of:

s1, filling physiological saline into a blood vessel body (301) of a base (10), and puncturing a puncture needle of a venous catheter (40) into the blood vessel body (301) through a rubber layer (20);

s2, adding colored liquid which is easy to distinguish colors into the injector (50), and connecting the injector (50) with the venous catheter (40);

and S3, performing pipe washing and pipe sealing operation.

8. The method for teaching the intravenous catheter flushing and sealing according to claim 7, wherein the step S3 is to determine the correctness and validity of the flushing and sealing operation according to the mixing condition of the colored liquid in the syringe (50) and the intravenous catheter (40) and the physiological saline in the blood vessel body (301).