Medical Three Way Stopcock Use: 3 Things To Note

1. "The tee in the infusion system must be stamped when not in use." From "INS infusion therapy nursing practice standard."

2. Tee needs to be replaced every 24 hours.

3. Do not use excessive force when connecting the tee, as it may cause the negative end of the Luer connector to be too tight (cracks) or cannot be opened, resulting in permanent connection.

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Three Way Stopcock Action Of Medical Self-Supporting Body

A Three Way Stopcock with a medical self-supporting body has at least two ways controlled by a one-way flow control element and a third way that is always open.

The new invention relates to a Three Way Stopcock with a self-supporting body for medical use. Pre-assembled single-use devices, called "devices", have long been used in the medical field, and generally allow the administration of drugs and the like to patients to ensure the sterility of the assembly.

These devices basically consist of a plurality of interconnected tubes having an appropriately standardized coupling at their ends, the coupler having a convex or concave cone (Luer cone), and Connect the vial to a needle inserted into the patient's vein or arterial circuit. Then, if necessary, a valve, a throttling device, an insertion point for the syringe and other components are placed along the tube so that the intended treatment can be performed with maximum safety and efficiency.

Functionally, these devices operate satisfactorily overall; however, operators in the field, in fact doctors and nurses, increasingly demand ease of operation, which allows tube and bottle execution to be performed with maximum speed and minimal awkwardness. Or several operations of tube and needle connected to each other.

In this case, some devices have pipes and connections, and due to the nature of the treatment to be performed, they must have at least three useful lines, all of which must be controlled by means of valves, which are suitable for example to prevent The return of the patient may allow multiple drugs to be mixed and dosed; especially in these cases, the operator needs to be able to provide multiple connections to the device faster and easier, and also to ensure that accidental and dangerous switching of connections does not occur.

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Technical Innovation Of Three Way Stopcock

Three Way Stopcock useful in the medical field, where an arm or channel is attached to an intravenous catheter or needle, while the other arm is used to administer intravenous fluids.

The goal is to achieve a three-way stopcock with excellent functionality, thereby achieving improvements in the way the arm or channel is associated with the intravenous bottle or container containing the therapeutic product. Another purpose is to better adapt the plug valve to the needs of the patient.

Three-way stopcocks are widely used in the medical and health fields for administering various products such as serum, nutrients and drugs through intravenous catheters. Patients with dementia and other coexisting pathological and cardiovascular problems are those who most need this stopcock to infuse one or more intravenous drugs simultaneously.

The utility model patent describes a three-way stopcock, which is characterized in that two secondary arms or paths emerge from the core of the atomic nucleus forming an orthogonal elbow along its trajectory.

Because the drugs and nutrients administered to a patient intravenously are solutions consisting essentially of liquid solid microelements, these microelements may deposit on the walls of the arms or channels, thereby impairing the full flow of fluid. Therefore, the presence of orthogonal elbows in the plug valves described in the aforementioned patents makes it difficult to eliminate the blocking of arms or channels. This problem has a negative impact on intravenous treatment, as drugs delivered to patients need to be managed within a specific time period.

Another problem raised by previously described plug valves with orthogonal elbows is reduced flexibility. For example, in situations where a medical staff needs to manipulate an arm or channel, such as changing an intravenous container or bottle containing a venous treatment product or disconnecting an auxiliary line from a main catheter, the main arm connection may be damaged. Intravenous catheters, which affect the supply of these products. Because the primary arm is directly connected to a catheter previously inserted into the patient's vein, any manipulation of the secondary arm can severely affect the venous connection, creating a pressure leak. Therefore, in view of this problem, it is desirable to have a three-way plug valve in which the jib is flexible.

In view of the previously outlined occlusion issues in secondary arms or channels and their reduced flexibility, improved three-way plug valves have been developed to address and meet these issues. In addition, due to this newly designed construction, the plug valve of the present invention provides greater flexibility. As a result, health personnel can operate the jib more easily and safely. If it acts on the auxiliary arm or route, it will not affect the main arm or channel. In this way, the secondary arm or path can be moved with greater freedom, so the intravenous treatment will not cause damage to the patient. In this way, the present invention solves problems such as pressure leakage.

The three-way sanitary plug valve developed by the present invention solves the aforementioned blocking problem on the basis of eliminating the orthogonal trajectory of the jib and replacing it with a curved trajectory.

According to a first object of the present invention, a three-way stopcock is a three-way stopcock composed of a cylindrical core or a body having a stopper or plug processed by a handle inside, the core converging on a main swing arm. The catheter is inserted into the patient's vein and there are two auxiliary arms or channels that receive other catheters that provide drugs or therapeutic fluids. The two auxiliary arms are diametrically opposed and are out of phase with respect to the main arm. Cross, because these auxiliary arms are characterized by an initial bend, are flexible and have a high elastic index, and then continue to remain clearly parallel to each other in their final part.

Therefore, like the intravenous catheter, the two connecting catheters of the plug valve's forearm also extend significantly parallel and are oriented towards the bedside of the patient undergoing intravenous treatment. This is the most advantageous direction, as bottles or containers containing medicines or nutrients are usually located on the patient's head.

The curvature and flexibility of the initial portion of the secondary arm prevents the secondary arm from becoming blocked, so intravenous infusion therapy is more effective because the volume of drugs and nutrients to be injected takes place within the required time. In addition, the initial section has a high elasticity index, so the ability to return to its initial position is greater, allowing the secondary arm to be used with greater safety.

Accordingly, the present invention is implemented, and the stopper or stopper located in the core or body cavity has an apparently “V” -shaped internal structure to allow the treatment fluid to pass through at the same time, while allowing fluid to flow. One of the auxiliary arms shuts off the flow to the other, and even shuts off the flow to the two auxiliary arms when needed.

Therefore, another implementation of the present invention is that the main arm and the jib will be made of medical grade polymer or plastic.

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Interpretation Of Sensory Experts: Application Of Needleless Connector

With the continuous upgrade of drug-resistant bacteria, each puncture and indwelling every day may increase the incidence of catheter-related bloodstream infections. For patients, vascular access is a life-saving pathway, not a fatal dead end! So, how to choose the infusion connector and how to carry out routine maintenance to effectively reduce the incidence of catheter-related bloodstream infections?

Intravenous infusion is an important way of clinical treatment, covering parenteral infusion, nutritional support, medication and infusion treatment, so it is widely used. Antibiotics are also widely used in clinical practice. Its invention can be described as a pioneering act of the 20th century. However, in recent years, bacterial resistance has also been continuously emerging and upgraded. For penicillin drugs, the original powerful effect is now inadequate.

It is frightening that when multi-drug resistant bacteria encounter vascular access, each puncture and indwelling every day will increase the incidence of catheter-related bloodstream infections, bring more harm to patients, and the mortality rate can even reach 45.3%. Vascular access should be a life-saving channel, not a fatal dead end. So, how to choose the infusion connector and how to carry out routine maintenance to effectively reduce the incidence of catheter-related bloodstream infections?

Why emphasize the choice of needleless connectors?

30% of catheter-related infections are caused by contamination of the catheter connector [2]. Among them, incomplete disinfection and flushing of the joint is one of the important reasons for the blocked pipe and the bacterial value, which is also greatly related to the design of the needleless joint itself.

Before each connection is used, it is necessary for nurses to wipe the surface of the connector with a mechanical method for 5 to 60 seconds. The purpose is to reduce bacterial contamination on the surface of the connector. However, if the surface of the joint is uneven or not tight, there are grooves or gaps. Then, you can't clean it thoroughly with hard and long-lasting wiping.

In addition, flushing the joint is also a necessary operation before and after each use, in order to rinse the drug, blood or other nutrients remaining in the joint, so as to avoid providing strong conditions for bacterial colonization. However, if the joint is opaque and no flushing effect is observed, then for substances that are not easily flushed, such as blood, high-viscosity liquids, lipid-containing nutritional preparations, etc., there may be flushing in place, increasing catheter blockage and bacterial colonization, Risk of infection.

Therefore, as pointed out in the Expert Consensus on Best Nursing Practices for the Prevention and Control of Catheter-Related Infection: Although it is not clear that certain types of needle-free infusion joints have advantages in preventing CLABSI and thrombotic occlusion, the smooth surface of the infusion The joints are easier to sterilize, and the transparent structure joints are easy to see the flushing effect.

In addition, by selecting the indwelling needle with a removable and replaceable pre-connected infusion connector, you can also replace the connector immediately when necessary to reduce the incidence of infection, such as the discovery of blood or other residues in the needle-free connector, When the connector or other additional device is removed or suspected of contamination, the original catheter is retained and unnecessary secondary puncture is performed on the patient.

Studies show that 71% of catheter-related bloodstream infections occur on the fifth day after implantation, suggesting that the biggest factor that causes CLABSI is during maintenance.

Sealing tube management is an important operation for daily catheter maintenance, and it is also one of the important links to prevent catheter blockage and blood flow related infections. Compared with using a disposable syringe to manually pump the flushing solution, using a pre-filled syringe directly can save the preparation time of the flushing solution, can also ensure the aseptic technique, and reduce the catheter or liquid contamination caused by the hands of the nursing staff. Due to the huge clinical use of vascular access, the problem of infection cannot be overlooked. Among them, the reasonable selection and standardized management of infusion tools are particularly important. Selecting infusion connectors with smooth surfaces, transparent shells, and detachable, and using pre-filled flushers to perform routine catheter maintenance can effectively control the occurrence of catheter-related bloodstream infection Let life channel fulfill its mission.

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Medical Mould-Medical Grade Plastic Material Selection: 5 Things

There are several grades of plastics that can be used for injection moulding of medical devices and the development of medical device prototypes. Each material has unique properties that determine its performance in the intended application and operating environment. Considerations for selecting the right medical grade plastic material for your medical plastic products include:

1. Strength: Plastic resins provide varying degrees of strength, so it is important to ensure that the medical grade plastic material you choose has the strength properties required for your application.

2.FDA requirements: Medical devices being implanted have different requirements than those used for tubes, medical devices, and other external applications. Before choosing materials, review the FDA requirements for your application.

3. Chemical resistance and heat resistance: When choosing medical grade plastic materials, chemical resistance and heat resistance are two key considerations, especially if your finished parts need to be able to pass autoclaves, gamma rays Or chemically.

4. Operating environment: Operating conditions determine the requirements for strength, temperature resistance, chemical resistance, corrosion resistance, radiation resistance and other factors. Make sure the medical grade plastic material you choose can withstand the conditions of your operating environment.

5. moulding methods: Medical injection moulding and medical insert moulding are two methods commonly used in medical device prototype development, but not all plastic materials are compatible with both methods. Before choosing medical grade plastic materials, it is important to determine which method to use.

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