CN106730316A - The transfusion many siphunculus of counterflow-preventing - Google Patents

Abstract

The invention discloses an anti-backflow multi-way pipe for infusion, which comprises: a main pipe and at least one medicine feeding branch pipe arranged on the side of the main pipe; The lower end of the main pipe is provided with a liquid outlet for communicating with the infusion tube; the branch pipe for adding medicine includes a pipe body with one end communicating with the side of the main pipe, a plug channel arranged at the other end of the pipe body, and a plug that is arranged on the said pipe body. The push plug in the plug road; the plug road includes a cylindrical channel section and a conical channel section arranged sequentially from the outside to the inside; the push plug includes a plug cap, a cylindrical plug body connected in turn with the plug cap, and a conical plug body. The anti-backflow multi-way tube for transfusion of the present invention can always keep the airtightness of the medicine-adding branch pipe during use by setting a push plug and a plug in the medicine-dosing branch pipe, can effectively prevent liquid backflow in the medicine-dosing branch pipe, and has a simple structure , easy to use.

Description

Anti-reflux multi-way tube for infusion

technical field

The invention relates to the technical field of medical infusion equipment, in particular to an anti-backflow multi-way tube for infusion.

Background technique

In the clinical treatment of critically ill patients, infusion or micropumps are often used to inject certain drugs into human veins. Liquid or micropumps require a "tee" connection to the IV needle. There are the following hidden dangers in the clinical use of tees:

1. The drugs injected by the micropump are often some drugs that have a severe impact on the physiological functions of the human body (such as vasopressors or vasodilators). The micropump can control the speed of drug entering the human body to a very precise dosage, and can inject a few tenths to several milliliters into the human body every hour. Infusion in critically ill patients often lasts from 24 hours to several days. In many cases, blockage may occur between the needle and the tee. For example, in sleep, some patients may press the needle or infusion tube closed due to involuntary activities (such as turning over, etc.), and needle blockage may occur. At this time, the micropump still continuously injects the medicine, so that the medicine will flow back into the infusion tube or medicine bag of the maintenance fluid through the three-way valve and accumulate. When the patient turns over involuntarily again or the medical staff restores the flow of the compressed infusion tube, it is possible that the drug that flows back into the infusion bag will be injected into the human body in a short time, and the drug that flows back into the infusion bag may have accumulated After a period of time, after the circulation is resumed, the dose of the drug injected into the human body per minute may increase many times, causing the patient's vital signs to fluctuate violently, causing damage to the human body and even causing the patient's death.

2. Even without a micropump, a patient’s infusion needle sometimes needs to be connected to several infusion bags of different drugs for infusion. In this case, it is also necessary to use a three-way connection to different infusion bags and infusion needles. If the pressure of the bag is different, there will be a kind of backflow of the medicine with high pressure to the medicine bag with low pressure, which will not only affect the curative effect, but also cause other harms caused by the chemical reaction of the medicine; Sometimes the needle, the infusion tube and the three-way connection are separated without being discovered, resulting in a large amount of blood loss.

Therefore need a kind of simple in structure, convenient to use and can prevent backflow infusion with three-way pipe or multi-way pipe now.

Contents of the invention

The technical problem to be solved by the present invention is to provide an anti-reflux multi-way tube for infusion in view of the above-mentioned deficiencies in the prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: an anti-reflux multi-way pipe for infusion, comprising: a main pipe and at least one medicine feeding branch pipe arranged on the side of the main pipe,

The upper end of the main pipe is provided with a liquid inlet for communicating with the infusion tube, and the lower end of the main pipe is provided with a liquid outlet for communicating with the infusion tube;

The medicine adding branch pipe includes a pipe body whose one end communicates with the side of the main pipe, a plug channel arranged at the other end of the tube body, and a push plug cooperatingly arranged in the plug channel;

The plugway includes a cylindrical channel section and a conical channel section arranged sequentially from outside to inside;

The push plug includes a plug cap, a cylindrical plug body and a conical plug body sequentially connected to the plug cap.

Preferably, at least two limiting grooves are formed on the inner wall of the middle section of the cylindrical channel section.

Preferably, a layer of polyvinylidene chloride is provided on the inner wall of the conical channel section.

Preferably, the outlet at the end of the conical channel is provided with a one-way valve.

Preferably, the one-way valve includes a circular baffle and an arc-shaped shrapnel connecting the circular baffle to the side wall at the end of the conical channel.

Preferably, the diameter of the circular baffle is greater than the diameter of the outlet at the end of the conical channel.

Preferably, the outer wall of the cylindrical plug body is provided with a limiting protrusion that cooperates with the limiting groove.

Preferably, a polytetrafluoroethylene layer is provided on the outer wall of the conical plug.

Preferably, the diameter of the conical plug body end is smaller than the diameter of the outlet at the conical channel end.

Preferably, the push plug is made of rubber, and the push plug fits and is inserted into the plug channel.

Beneficial effects of the present invention: the anti-reflux multi-way pipe for infusion of the present invention can keep the airtightness of the medicine adding branch pipe at all times by setting the push plug and plug channel in the medicine adding branch pipe, and can effectively prevent the backflow in the medicine adding branch pipe. The liquid flows countercurrently, and the structure is simple and easy to use. The present invention can be provided with a plurality of drug feeding branch pipes to realize "three links", "four links" and "five links", etc., thereby facilitating the injection of various medicaments.

Description of drawings

Fig. 1 is the structural representation of anti-backflow multi-way tube for infusion of the present invention;

Fig. 2 is the structural representation of plug road of the present invention;

Fig. 3 is a structural schematic diagram of the push plug of the present invention.

Explanation of reference signs:

1—main pipe 1; 2—dosing branch pipe; 3—liquid inlet; 4—liquid outlet; 5—pipe body; 6—plug channel; 7—push plug; 60—cylindrical channel section; 61—conical channel Section; 62—limiting groove; 63—polyvinylidene chloride layer; 64—one-way valve; 65—circular baffle; 66—arc shrapnel; 67—exit; 70—plug cap; 71—cylinder Shaped plug body; 72—conical plug body; 73—limiting convex body; 74—polytetrafluoroethylene layer.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

It should be understood that terms such as "having", "comprising" and "including" as used herein do not entail the presence or addition of one or more other elements or combinations thereof.

As shown in Figures 1-3, an anti-reflux multi-way pipe for infusion in this embodiment includes: a main pipe 1 and at least one medicine feeding branch pipe 2 arranged on the side of the main pipe 1,

The upper end of the main pipe 1 is provided with a liquid inlet 3 for communicating with the infusion tube, and the lower end of the main pipe 1 is provided with a liquid outlet 4 for communicating with the infusion pipe;

The medicine feeding branch pipe 2 includes a pipe body 5 whose one end communicates with the side of the main pipe 1 , a plug channel 6 arranged at the other end of the tube body 5 , and a push plug 7 cooperatingly arranged in the plug channel 6 .

The plug channel 6 includes a cylindrical passage section 60 and a conical passage section 61 arranged sequentially from the outside to the inside; at least two limiting grooves 62 are provided on the inner wall of the middle section of the cylindrical passage section 60; the inner wall of the conical passage section 61 A polyvinylidene chloride layer 63 is arranged on the top, and the polyvinylidene chloride layer 63 can effectively improve the wear resistance and sealing performance of the inner wall of the conical passage section 61; the outlet 66 at the end of the conical passage section 61 is provided with a one-way movable Petal 64, one-way flap 64 comprises a circular baffle 65 and the arc shrapnel 65 that circular baffle 65 is connected on the sidewall of conical passage section 61 ends, and arc shrapnel 65 is plastic material, and in natural In this state, the arc shrapnel 65 shrinks, so that the circular baffle 65 covers the outlet 66 at the end of the conical channel section 61, and when there is liquid in the infusion tube, the liquid will also press the circular baffle 65 to the cone. The outlet 66 at the end of the shaped channel section 61 makes the circular baffle 65 tightly cover on the outlet 66 to prevent the liquid from flowing backward from the outlet 66 to the plug channel 6.

Wherein, the diameter of the circular baffle 65 is larger than the diameter of the outlet 66 at the end of the conical passage section 61 to ensure airtightness.

The push plug 7 includes a plug cap 70 , a cylindrical plug body 71 and a conical plug body 72 sequentially connected to the plug cap 70 . The outer wall of the cylindrical plug body 71 is provided with a limiting convex body 73 that cooperates with the limiting groove 62, and the limiting convex body 73 can only slide in the limiting groove 62, so that the push plug 7 neither moves inward nor Excessive insertion will not fall out; the outer wall of the conical plug body 72 is provided with a polytetrafluoroethylene layer 74; the push plug 7 is made of rubber, and the push plug 7 is tightly fitted and inserted in the plug channel 6 to further strengthen the plug. The airtightness of medicine branch pipe 2; Wherein, the diameter of conical plug body 72 ends is less than the diameter of the outlet 66 of conical passage end, and the diameter of the thickest end of conical plug body 72 is equal to or close to the diameter of conical passage section 61 maximum ends , the diameter of the cylindrical plug body 71 is slightly smaller than the diameter of the cylindrical channel section 60 .

Before use, the push plug 7 is inserted in the plug channel 6, but the conical plug body 72 does not pass through the outlet 66 at the end of the conical passage section 61, and the conical plug body 72 is outside the end of the conical passage. Closely matched with the plug channel 6, the one-way valve 64 is in a closed state, the medicine feeding branch pipe 2 remains airtight, and the liquid in the main pipe 1 will not flow out of the medicine feeding branch pipe 2. When using the medicine dosing branch pipe 2 to add medicine, press the push plug 7 to insert the plug road 6 forward, because the diameter of the conical plug body 72 end is smaller than the diameter of the outlet 66 of the conical channel section 61 end, the conical plug body 72 end wears Pass through the outlet 66 at the end of the conical channel section 61, and push away the circular baffle 65 of the one-way valve 64, but the conical plug body 72 is still closely attached to the conical channel, so that the liquid in the dosing branch pipe 2 does not It will flow back outward through the plug channel 6, and the dosing branch pipe 2 remains airtight and still remains airtight, and under the cooperation of the limiting convex body 73 and the limiting groove 62, the conical plug body 72 will not be excessively inserted inward, which can avoid Damage the one-way valve 64 and the dosing branch pipe 2, then insert the puncture needle into the push plug 7, pass through the push plug 7, enter the medicine dosing branch pipe 2, inject the medicine into the dosing branch pipe 2, and flow into the main pipe 1, infusion. When it is no longer necessary to use the dosing branch pipe 2 to add medicine, the push plug 7 is pulled out to make the conical plug body 72 return to the conical passage, and the circular baffle plate 65 of the one-way valve 64 will press the liquid pressure and arc Under the action of the contraction force of the shrapnel 65, cover back to the outlet 66 at the end of the conical passage section 61, and the medicine adding branch pipe 2 continues to keep airtight, and then the puncture needle is pulled out, which can prevent the liquid in the medicine adding branch pipe 2 from flowing backwards, and It can prevent air bubbles from entering the dosing branch pipe 2 from the pinhole left by the puncture needle on the push plug 7 when the puncture needle is pulled out, and due to the cooperation of the limiting convex body 73 and the limiting groove 62, the pushing plug 7 will not It fell out due to excessive pulling out.

The present invention is used for medical infusion, especially when multi-drug infusion is required, when in use, the anti-reflux multi-way tube for infusion of the present invention can be connected to the infusion hose, and then the medicine adding branch pipe 2 is used for dosing.

The anti-reflux multi-way tube for infusion of the present invention can always keep the airtightness of the medicine adding branch pipe 2 during use, can effectively prevent the liquid backflow in the medicine adding branch pipe 2, and is simple in structure and easy to use. The present invention can be provided with multiple Dosing branch pipe 2, to realize "three links", "four links" and "five links", etc., so as to facilitate the injection of various medicaments.

In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

Although embodiments of the present invention have been disclosed above, it is not limited to the applications set forth in the specification and examples. It can be fully applied to various fields suitable for the present invention. Additional modifications can readily be made by those skilled in the art. Therefore, the invention should not be limited to the specific details and examples shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims (10)

1. An anti-reflux multi-way tube for transfusion, characterized in that it comprises: a main pipe and at least one drug-feeding branch pipe arranged on the side of the main pipe, The upper end of the main pipe is provided with a liquid inlet for communicating with the infusion tube, and the lower end of the main pipe is provided with a liquid outlet for communicating with the infusion tube; The medicine adding branch pipe includes a pipe body whose one end communicates with the side of the main pipe, a plug channel arranged at the other end of the tube body, and a push plug cooperatingly arranged in the plug channel; The plugway includes a cylindrical channel section and a conical channel section arranged sequentially from outside to inside; The push plug includes a plug cap, a cylindrical plug body and a conical plug body sequentially connected to the plug cap. 2 . The anti-reflux multi-way tube for infusion according to claim 1 , wherein at least two limiting grooves are formed on the inner wall of the middle section of the cylindrical channel section. 3 . 3. The anti-reflux multi-way tube for transfusion according to claim 1, characterized in that a polyvinylidene chloride layer is provided on the inner wall of the conical channel section. 4. The anti-reflux multi-way tube for transfusion according to claim 3, characterized in that, a one-way valve is arranged on the outlet at the end of the conical channel. 5. The anti-reflux multi-way tube for infusion according to claim 4, wherein the one-way valve comprises a circular baffle and a valve connecting the circular baffle to the end of the conical passage. Curved tabs on the side walls. 6 . The anti-reflux multi-way tube for infusion according to claim 5 , wherein the diameter of the circular baffle is larger than the diameter of the outlet at the end of the conical channel. 7 . The anti-reflux multi-way tube for infusion according to claim 1 , characterized in that, the outer wall of the cylindrical plug body is provided with a limiting protrusion that cooperates with the limiting groove. 8 . 8. The anti-reflux multi-way tube for transfusion according to claim 7, characterized in that a polytetrafluoroethylene layer is arranged on the outer wall of the conical plug. 9. The anti-reflux multi-way tube for infusion according to claim 8, characterized in that, the diameter of the end of the conical plug body is smaller than the diameter of the outlet of the end of the conical channel. 10. The anti-reflux multi-way tube for infusion according to any one of claims 1-9, wherein the push plug is made of rubber, and the push plug is fitly inserted into the plug channel.