CN223542242U

CN223542242U - Backflow-preventing multi-way pipe for transfusion

Info

Publication number: CN223542242U
Application number: CN202422712243.XU
Authority: CN
Inventors: 谭宏宇; 黄焱; 杨彩霞; 李淑霞
Original assignee: Beijing Cancer Hospital
Current assignee: Beijing Cancer Hospital
Priority date: 2024-11-07
Filing date: 2024-11-07
Publication date: 2025-11-14
Anticipated expiration: 2034-11-07

Abstract

The utility model discloses an anti-reflux multi-way pipe for transfusion, and relates to the technical field of medical equipment. In order to solve the problems of lack of a backflow prevention structure, lack of a filter and low flow rate of liquid in a branch pipe in the prior art, the utility model designs an backflow prevention multi-way pipe for transfusion, which is mainly characterized by mainly focusing on the structure of the backflow prevention multi-way pipe for transfusion, and the backflow prevention multi-way pipe comprises a main pipe for transfusion or blood transfusion, at least one branch pipe connected with the side part of the main pipe and used for transfusion, and further comprises a three-way joint corresponding to the branch pipe, which is arranged on the main pipe, wherein the branch pipe is communicated with the main pipe through the three-way joint; the branch pipe is communicated with the main pipe through the three-way pipe joint, so that the pipe diameter of the branch pipe is the same as that of the main pipe, the cross section of the branch pipe is not reduced to ensure that the flow rate of liquid in the branch pipe is not reduced, the branch pipe is provided with a backflow preventer to prevent medicine from flowing back into the infusion bag, and the branch pipe is provided with a liquid medicine filter for filtering bubbles and tiny glass fragments which are difficult to be perceived by naked eyes to avoid air embolism or danger.

Description

Backflow-preventing multi-way pipe for transfusion

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an anti-backflow multi-way pipe for transfusion.

Background

In clinical treatment of critically ill patients, infusion pumps or micropumps are often used to infuse specific drugs into the human veins. Infusion pumps or micropumps require the use of a "tee" to connect with an intravenous infusion needle or trocar. However, clinically using a tee has the following potential hazards:

1. Drugs injected by micropump are often drugs (such as booster drugs or vasodilators) that have a relatively strong influence on physiological functions of human body. The micro pump can control the speed of drug infusion into the human body to very accurate doses, and can infuse only a fraction to several milliliters per hour into the human body. Infusion for critically ill patients often lasts for 24 hours to days. In many cases, the needle head can be blocked from the tee joint, for example, a patient in sleep can press and fold the infusion tube due to involuntary movements (such as turning over, etc.), so that the infusion tube is blocked, etc. The micro pump continuously injects the medicine at the moment, so that the medicine can be accumulated by flowing back into the infusion tube or the medicine bag of the maintaining liquid through the three-way valve. When the patient turns over again involuntarily or the medical staff resumes the circulation of the pressed infusion tube, the medicine flowing back into the infusion bag can be injected into the human body in a short time, the medicine flowing back into the infusion bag can be accumulated for a period of time, and after resuming the circulation, the dosage of the medicine injected into the human body per minute can be increased by a plurality of times, so that the vital sign of the patient is severely fluctuated, the human body is damaged, and even the patient is dead.

2. Even if a micro pump is not used, the infusion needle of a patient needs to be connected with infusion bags of different medicines at the same time for infusion, in this case, a tee joint is also needed to be used for connecting different infusion bags and infusion needles, and because of different pressures of the infusion bags, when the front end (the patient end) of an infusion pipeline is folded, or the front end (the patient end) of the infusion pipeline is forgotten to be opened after the infusion pipeline is closed under the condition of misoperation of medical staff, or the patient loses blood and loses liquid excessively, when the main pipe is needed for pressurizing and infusing blood and infusing, the backflow of blood or liquid in the main pipe (pressure is increased after pressurizing) to the medicine bag with low pressure can occur, so that the curative effect is influenced, other harm can be caused due to chemical reaction of medicines, and in addition, when the tee joint is used for infusion for a long time, the condition that the needle, the infusion pipe and the tee joint are separated from the infusion pipeline can sometimes occur in clinic, so that a large amount of blood loss occurs.

Therefore, there is a need for a three-way tube or a multi-way tube for infusion that is simple in structure, convenient to use and capable of preventing backflow.

The patent with the publication number of CN106730316B discloses an anti-reflux multi-way pipe for transfusion, which comprises a main pipe and at least one dosing branch pipe arranged on the side part of the main pipe, wherein the upper end of the main pipe is provided with a liquid inlet communicated with a transfusion pipe, the lower end of the main pipe is provided with a liquid outlet communicated with the transfusion pipe, the dosing branch pipe comprises a pipe body, a plug channel and a plug, one end of the pipe body is communicated with the side part of the main pipe, the plug channel is arranged at the other end of the pipe body, the plug channel is matched with the plug channel, the plug channel comprises a cylindrical channel section and a conical channel section which are sequentially arranged from outside to inside, and the plug channel comprises a plug cap, a cylindrical plug body and a conical plug body, and the cylindrical plug body and the conical plug body are sequentially connected with the plug cap. The anti-reflux multi-way pipe for transfusion is provided with the pushing plug and the plugging channel in the dosing branch pipe, so that the tightness of the dosing branch pipe can be always kept during use, the liquid in the dosing branch pipe can be effectively prevented from flowing backwards, and the anti-reflux multi-way pipe for transfusion is simple in structure and convenient to use.

The branch pipe is directly connected with the main pipe, so that the diameter of the branch pipe is far smaller than that of the main pipe, the flow velocity in the branch pipe can be reduced due to the small cross section of the branch pipe, and a filter is not arranged.

Disclosure of utility model

Aiming at the problems, the technical thought adopted by the utility model for solving the technical problems is as follows:

The branch pipe is communicated with the main pipe through the three-way pipe joint, so that the pipe diameter of the branch pipe is the same as that of the main pipe, the flow velocity in the branch pipe is ensured not to be reduced, and the branch pipe is provided with an anti-reflux device and a liquid medicine filter for filtering air.

The specific scheme is as follows:

The anti-reflux multi-way pipe for transfusion comprises a main pipe for transfusion or blood transfusion, at least one branch pipe connected with the side part of the main pipe and used for transfusion, and a three-way joint corresponding to the branch pipe, wherein the three-way joint is arranged on the main pipe, the branch pipe is communicated with the main pipe through the three-way joint, an anti-reflux device and a liquid medicine filter for filtering air bubbles are arranged on the branch pipe, the anti-reflux device is arranged on one side close to the main pipe, and the liquid medicine filter is arranged on one side far away from the main pipe.

Preferably, the backflow preventer is a one-way valve.

Further, a liquid outlet end of the main pipe is connected with a sealing head pipe cap.

The preferable scheme is that the liquid inlet end of the branch pipe and the liquid inlet end of the main pipe are respectively connected with an infusion connector.

Optionally, the main pipe and the branch pipe are respectively provided with a flow stopping clamp.

Further, the diameter of the branch pipe is the same as the diameter of the main pipe.

By adopting the technical scheme, the utility model has the following technical effects:

The anti-reflux multi-way pipe for transfusion comprises a main pipe for transfusion or blood transfusion and at least one branch pipe connected with the side part of the main pipe and used for transfusion, and also comprises a three-way joint corresponding to the branch pipe, wherein the three-way joint is arranged on the main pipe, the branch pipe is communicated with the main pipe through the three-way joint, the branch pipe is provided with an anti-reflux device and a liquid medicine filter for filtering bubbles, the anti-reflux device is arranged on one side close to the main pipe, and the liquid medicine filter is arranged on one side far away from the main pipe.

The three-way pipe joint is used for communicating the branch pipe with the main pipe, so that the pipe diameter of the branch pipe is the same as that of the main pipe, the cross section of the branch pipe is not reduced, the flow rate of liquid in the branch pipe is not reduced, the branch pipe is provided with a backflow preventer for preventing medicine from flowing back into an infusion bag, the safety risk is reduced, the branch pipe is provided with a liquid medicine filter for filtering bubbles and tiny glass fragments which are difficult to be perceived by naked eyes, the air or tiny glass fragments are prevented from being injected into veins of a human body, air embolism or danger is avoided, and the needleless airtight infusion joint is used for reducing the danger of occupational exposure caused by needle penetration injury of nursing staff to cause blood-borne infection. The backflow-preventing multi-way pipe for transfusion has high safety coefficient and can be widely used.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings used in the embodiments will be briefly described below.

FIG. 1 is a schematic view of a multi-way tube for preventing backflow for infusion, which is provided by an embodiment of the application;

fig. 2 is a schematic structural view of an anti-reflux multi-way pipe for transfusion according to an embodiment of the present application;

FIG. 3 is a perspective view of an infusion set provided in an embodiment of the present application;

FIG. 4 is a schematic view of a liquid outlet head according to an embodiment of the present application;

FIG. 5 is a diagram of a prior art multi-way infusion tube;

The drawing shows a main pipe 1, a sealing head pipe cap 11, a liquid outlet end 12, a branch pipe 2, an anti-reflux device 21, a liquid medicine filter 22, a three-way joint 3, an infusion joint 4, a joint outer shell 41, a joint inner core 42, a seam 43 and a flow stopping clamp 5.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to fig. 1 to 4 in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, it should also be noted that the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise.

Examples

The inventor researches and discovers that the clinically used three-way pipe is connected with different infusion bags and infusion needles, and the three-way pipe is not provided with an anti-reflux structure, so that medicines which flow into the infusion bags in a countercurrent way are easily injected into a human body in a short time, and damage and even death of the patient are caused to the human body. In the prior art, the branch pipe is directly connected with the main pipe, so that the diameter of the branch pipe is far smaller than that of the main pipe, and therefore, the flow velocity in the branch pipe is reduced due to the small cross section of the branch pipe, and no filter is arranged. Therefore, the application provides the backflow-preventing multi-way pipe for transfusion, which can prevent backflow, can realize filtration and does not reduce the flow rate of liquid.

In the embodiment of the present application, please refer to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an anti-backflow multi-way pipe for infusion provided in the embodiment of the present application, and fig. 2 is a schematic structural diagram of an anti-backflow multi-way pipe for infusion provided in the embodiment of the present application. The backflow-preventing multi-way pipe for transfusion comprises a main pipe 1 for transfusion or blood transfusion, at least one branch pipe 2 connected with the side part of the main pipe 1 and used for transfusion, a three-way joint 3 corresponding to the branch pipe 2, wherein the three-way joint 3 is arranged on the main pipe 1, the branch pipe 2 is communicated with the main pipe 1 through the three-way joint 3, the branch pipe 2 is provided with a backflow-preventing device 21 and a liquid medicine filter 22 used for filtering bubbles, the backflow-preventing device 21 is arranged on one side close to the main pipe 1, and the liquid medicine filter 22 is arranged on one side far away from the main pipe 1.

The branch pipe 2 is communicated with the main pipe 1 through the tee joint, so that the pipe diameter of the branch pipe 2 is the same as that of the main pipe 1, the cross section of the branch pipe 2 is not reduced to ensure that the flow rate of liquid in the branch pipe 2 is not reduced, the anti-reflux device 21 is arranged on the branch pipe 2 to prevent medicine from reversely flowing into an infusion bag, the safety risk is reduced, the medicine liquid filter 22 for filtering bubbles and tiny glass fragments which are difficult to be perceived by naked eyes is arranged on the branch pipe 2 to prevent air or tiny glass fragments from being injected into veins of a human body to cause air embolism or danger, and the needleless closed infusion joint 4 is adopted to reduce the danger of occupational exposure caused by needle penetration injury of nursing staff to cause blood-borne infection.

The main pipe 1 is in a transparent hollow tube shape, the upper end of the main pipe is a liquid inlet end, the lower end of the main pipe is a liquid outlet end (namely a patient end), the middle part of the main pipe is connected with at least one three-way pipe joint, and the number of the three-way pipe joints is the same as that of the required branch pipes 2;

The tee joint is a common prior art, is a common T-type, a Y-type, and the like, and is preferably a Y-type with good compliance, and can be realized by a person skilled in the art, for example, a Y-type tee under Jawe brand is currently used in the market, and is the same as the tee joint in the present application, and the present application does not specifically improve the tee joint because of the prior art, and is not repeated here.

The main pipe 1 and the three-way pipe joint are connected in such a way that the main pipe 1 is cut off in the cross section direction, and the two cut-off ports formed are respectively bonded or integrally formed with the upper port and the lower port on the vertical side of the three-way pipe joint, so that the three-way pipe joint is prevented from being separated from the main pipe 1, and the accident of the blood loss of a patient is avoided.

The branch pipe 2 and the three-way pipe joint are connected in such a way that one end part of the branch pipe 2 is adhered to or integrally formed with the inclined port of the three-way pipe joint, so that the accident of the blood loss of a patient caused by the separation of the three-way pipe joint and the branch pipe 2 is avoided.

The diameter of the branch pipe 2 is the same as the diameter of the main pipe 1, so that the cross section of the branch pipe 2 does not become small to ensure that the flow rate of the liquid in the branch pipe 2 does not decrease.

The utility model can be provided with a plurality of branch pipes 2 and three-way pipe joints matched with the branch pipes to realize three-way, four-way, five-way and the like, thereby facilitating the injection of various medicaments.

The materials of the branch pipe 2 and the main pipe 1 are the same as those of common infusion hoses, the length of the branch pipe 2 and the main pipe 1 is not limited in the application, and the length of the branch pipe 2 and the main pipe 1 can be adjusted according to market demands by a person skilled in the art.

The medical fluid filter 22 adopts the existing precision filter, which is provided with a hollow wheel-shaped shell, the upper part and the lower part of the shell are respectively hollow tubular inlet end interfaces and outlet end interfaces which are communicated with the inside of the shell, a filtering membrane is arranged in the shell, and the nominal filtering membrane aperture is usually 3 microns and 5 microns. The liquid from the upper part of the filter passes through the filter membrane inside the filter before flowing out of the filter, and the pore size of 3 and 5 microns is very small for one bubble, and is enough to block the bubbles with much larger volume, and the blocked air can be discharged through an exhaust hole. This is a common prior art, and can be achieved by a person skilled in the art, and is not described here in detail.

The branch pipe 2 and the liquid medicine filter 22 are connected in such a way that the branch pipe 2 is cut off in the cross section direction, two cut-off ports are formed, the cut-off port on the side close to the main pipe 1 is bonded or integrally formed with the outlet end interface of the liquid medicine filter 22, and the cut-off port on the side far away from the main pipe 1 is bonded or integrally formed with the inlet end interface of the liquid medicine filter 22.

Preferably, the backflow preventer 21 is a one-way valve, which is a common prior art, and can be implemented by a person skilled in the art, for example, a diaphragm check valve of the x32 type, which is currently used in the market under the far-going brand, is the same as the one-way valve in the present application, and the present application does not specifically improve the one-way valve, and is not repeated here.

The branch pipe 2 is connected with the one-way valve in such a way that the branch pipe 2 is cut off in the cross section direction, two cut-off ports are formed, the cut-off port on one side close to the main pipe 1 is bonded with the outlet end of the one-way valve or integrally formed, and the cut-off port on one side far away from the main pipe 1 is bonded with the inlet end of the one-way valve or integrally formed.

In the embodiment of the present application, please refer to fig. 3, fig. 3 is a perspective view of an infusion connector according to an embodiment of the present application. The liquid inlet end of the branch pipe 2 and the liquid inlet end of the main pipe 1 are respectively connected with an infusion connector 4 by adopting the existing needleless airtight infusion connector 4, the infusion connector 4 comprises a connector shell 41 and a connector inner core 42, the connector shell is hollow and integrally formed, the middle part of the connector shell is thick cylindrical, the upper part of the connector shell is short cylindrical with external threads and is used for being matched with an infusion pipeline for threaded connection, the lower part of the connector shell is long cylindrical and is used for being sleeved with the liquid inlet end of the main pipe or the branch pipe, the connector inner core is made of soft plastic or rubber, is solid round table-shaped and is arranged in the connector shell so as to ensure that the connector inner core cannot fall out from the connector shell, one side of the connector inner core, far from the liquid inlet end, is provided with a seam 43, the seam is communicated with the inside of the main pipe or the branch pipe through the connector shell, when the connector is not used, the seam is in a closed state and is dustproof, and when the connector is used, the front end of the injector is inserted into the seam, and can be injected, and the use is convenient.

The design of the connector reduces the risk of blood-borne infection caused by occupational exposure of nursing staff due to needle penetration injury, reduces the workload of the nursing staff for aseptically placing the infusion cap, avoids pollution caused by improper placement of the infusion cap, and is more sanitary in needleless closed infusion technology.

For example, the needleless infusion set under the brands of berm is currently available in the market, which is the same as the infusion set 4 of the present application, and since it belongs to the prior art, the present application does not specifically modify the infusion set 4, and is not described here again.

In the embodiment of the present application, please refer to fig. 4, fig. 4 is a schematic structural diagram of a liquid outlet end provided in the embodiment of the present application. The liquid outlet end of the main pipe adopts the liquid outlet end 12 of the disposable extension pipe under the brand of Yixintang in the prior art, one side of the liquid outlet end is sheet-shaped, which is convenient for medical staff to hold, the side of the liquid outlet end is a fixed end fixedly connected with the main pipe, the inside of the fixed end is communicated with the inside of the main pipe, and the inner wall of the fixed end is provided with internal threads for being matched with the end socket pipe cap for threaded connection.

The head pipe cap 11 integrated into one piece, the middle part is the thick cylindric of peripheral hardware anti-skidding line, and the medical personnel of being convenient for hold and pull out, is long cylindric near play liquid end 12 one side for stretch into inside the fixed end to with its cooperation threaded connection, keep away from play liquid end one side and be the short cylindric of closing, be used for preventing dust.

When the end socket pipe cap 11 is locked with the liquid outlet end socket, the main pipe in the fixed end socket is attached to the inner wall of one side of the short cylinder of the end socket pipe cap 11 to form a sealing state. When in use, the utility model is used after the sealing head pipe cap 11 is pulled down. The seal head pipe cap 11 can be a seal head pipe cap which is matched with an extension pipe under the brand of Yixintang in the prior art, and the seal head pipe cap 11 is not specifically improved in the utility model because the seal head pipe cap belongs to the prior art, and the description is not repeated here.

In order to stop transfusion conveniently, a flow stopping clamp 5 is respectively sleeved on one side of the main pipe 1 close to the transfusion joint 4 and one side of the branch pipe 2 close to the one-way valve. The flow stop clip 5 may be a Robert clip commonly known in the art, and can be implemented by those skilled in the art, and will not be described herein.

The main tube 1 can be connected to a blood transfusion line, and a filter and a check valve are not provided for rapid blood transfusion during major hemorrhage.

Application process

1. The infusion bottle is hung on the bracket upside down, and the air in the infusion tube is exhausted.

2. The infusion tube is inserted into the female end of the infusion connector 4,

3. The flow stopping clamp 5 is released, the liquid passes through the liquid filters and the one-way valves of the main pipe 1 and the branch pipe 2 and is collected to the liquid outlet end of the main pipe 1,

4. The sealing head tube cap 11 is removed, and the liquid outlet end of the main tube 1 is connected with a patient.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-backflow multi-port tubing for intravenous infusion, comprising a main tube (1) for intravenous infusion or blood transfusion and at least one branch tube (2) connected to a side of the main tube (1) for intravenous infusion, characterized in that,

It also includes a tee connector (3) corresponding to the branch pipe (2), which is provided on the main pipe (1), and the branch pipe (2) is connected to the main pipe (1) through the tee connector (3);

The branch pipe (2) is provided with an anti-backflow device (21) and a medicine filter (22) for filtering air bubbles. The anti-backflow device (21) is located on the side close to the main pipe (1), and the medicine filter (22) is located on the side away from the main pipe (1).

2. The infusion anti-backflow multi-port tubing according to claim 1, characterized in that the anti-backflow device (21) is a one-way valve.

3. The anti-backflow multi-port tube for infusion according to claim 1, characterized in that the outlet end of the main tube (1) is connected to a cap (11).

4. The anti-backflow multi-port tubing for infusion according to claim 1, characterized in that the inlet end of the branch pipe (2) and the inlet end of the main pipe (1) are respectively connected to infusion connectors (4).

5. The infusion anti-backflow multi-port tube according to claim 1, characterized in that the main pipe (1) and the branch pipe (2) are respectively provided with flow-stopping clamps (5).

6. The anti-backflow multi-port tubing for infusion according to claim 1, characterized in that the diameter of the branch pipe (2) is the same as the diameter of the main pipe (1).