CN204446782U - A kind of transfusion device - Google Patents

Abstract

The utility model discloses an infusion set, which comprises a bottle stopper puncturer, a first infusion catheter, a Murphy's dropper, a liquid medicine filter and an intravenous infusion needle. The bottle stopper puncturer is connected with the first infusion catheter, ink Philips dropper, second infusion catheter, liquid medicine filter, terminal infusion tube, and intravenous infusion needle, the liquid medicine filter is connected to the end infusion tube through the connection port; the Murphy's dropper is provided with an exhaust device, the exhaust device includes a hydrophobic exhaust film, an exhaust pipe, and an exhaust hole, and the upper end of the Murphy's dropper is equipped with a hydrophobic exhaust film; the inside of the Murphy's dropper is provided with an exhaust pipe, and the exhaust The tube is provided with several exhaust holes; the liquid medicine filter is provided with a one-way anti-return valve. The utility model has a simple structure, can automatically exhaust during the infusion process, prevents air bubbles from being brought into the infusion catheter, and is safe and convenient to use. An anti-blood return valve is added to the liquid medicine filter to realize the one-way flow of the liquid medicine, which is convenient for processing and popularized. high degree.

Description

an infusion set

【Technical field】

The utility model relates to the technical field of medical instruments, in particular to the technical field of infusion sets.

【Background technique】

The infusion set is a common disposable medical consumable that is mainly used for intravenous infusion after aseptic treatment to establish a channel between the vein and the liquid medicine. It is generally composed of an intravenous needle, a protective cap, an infusion hose, a liquid medicine filter, a flow rate regulator, a drip pot, a cork puncturer, and an air inlet pipe air filter connection.

After the infusion set is inserted into the medicine bottle and before the human body puncture, the dripping funnel of the infusion set must be lowered until the venous needle is filled with the medicine solution and there are no air bubbles left, so as to prevent the air bubbles from being injected into the human body and cause acute bubble embolism death or chronic vascular embolism. This process is called venting. At present, the infusion sets used in medical institutions require the medical staff to manually exhaust, that is, the medical staff inverts the drip funnel or strangles the drip funnel with one hand, then pinches the drip funnel with the other hand and releases it, and uses the elasticity of the drip funnel to restore the drug absorption , repeat several times until the medicine liquid is stored to about half of the height of the dropping funnel, and after the air bubbles mixed with the medicine liquid in the dropping funnel are precipitated, place the dropping funnel upright or loosen the strangled catheter so that the bubble-free medicinal liquid flows into the lower pipe of the dropping funnel Until it overflows from the front end of the venous needle, and finally the regulator is stuck to complete the exhaust process. The exhausting process of the existing infusion set is time-consuming and prone to exhaust residues.

During intravenous infusion, nurses can determine whether the injection needle has been inserted into the blood vessel by observing the return of blood. When the patient changes position, raises the arm, walks around, or when the patient's muscles tense and the blood vessels constrict, the venous blood will flow back into the infusion tube through the needle, and even reach the Murphy's dropper. The blood that flows back into the infusion set coagulates into clots. If the blood clots enter the human body, thrombus may block the blood vessels, and even serious medical accidents such as iatrogenic infection and sepsis may occur, endangering human health.

【Content of utility model】

The purpose of this utility model is to solve the problems in the prior art, to propose an infusion set, which has a simple structure, can be automatically exhausted during the infusion, is safe and convenient to use, realizes the one-way flow of the liquid medicine, prevents blood return, and is easy to process and popularize. high degree.

In order to achieve the above object, the utility model proposes an infusion set, comprising a cork puncturer, a first infusion catheter, a Murphy dropper, a liquid medicine filter and an intravenous infusion needle, and the cork puncturer is connected to the first An infusion catheter, a Murphy's dropper, a second infusion catheter, a liquid medicine filter, a terminal infusion tube, and an intravenous infusion needle, the liquid medicine filter is connected to the terminal infusion tube through a connection port; the Murphy's dropper There is an exhaust device inside the tube, and the exhaust device includes a hydrophobic exhaust film, an exhaust pipe, and an exhaust hole. The upper end of the Murphy dropper is equipped with a hydrophobic exhaust film, and an exhaust protective shell is installed outside the hydrophobic exhaust film. The inside of the Murphy's dropper is provided with an exhaust pipe, and the exhaust pipe is provided with several exhaust holes; the first one-way anti-return valve and the second one-way anti-return valve are arranged in the liquid medicine filter .

Preferably, the exhaust pipe is connected to the second infusion conduit, and the lower part of the exhaust pipe is provided with a guide groove, and the liquid guide groove communicates with the second infusion conduit.

Preferably, the upper part of the exhaust pipe is provided with several exhaust holes, and the height of the exhaust pipe is higher than half of the height of the Murphy dropper.

Preferably, the exhaust protective case is arranged on the outer wall of the Murphy dropper, and vent holes are opened on the exhaust protective case.

Preferably, the first one-way anti-return valve and the second one-way anti-return valve are arranged in a convex arc, and the first one-way anti-return valve and the second one-way anti-return valve are located on both sides of the inlet of the liquid medicine filter .

Preferably, the first infusion conduit is provided with a liquid filling port, and the second infusion conduit is provided with a regulator; the liquid medicine filter is provided with a liquid medicine filter membrane.

Beneficial effects of the utility model: the utility model has a simple structure, can automatically exhaust air during the infusion process, prevents air bubbles from being brought into the infusion catheter, and is safe and convenient to use. Direct flow, little structural change to the existing infusion set, easy processing and high degree of popularization.

The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is the structural representation of a kind of transfusion device of the present utility model;

Fig. 2 is the structural representation of the Murphy's dropper of a kind of infusion set of the present utility model;

Fig. 3 is a structural schematic diagram of a liquid medicine filter of an infusion set according to the present invention.

In the figure: 1-cork piercer, 2-first infusion catheter, 21-filling port, 3-Murphy's dropper, 31-exhaust protective shell, 32-air vent, 33-hydrophobic exhaust film, 34-exhaust pipe, 35-guiding tank, 36-vent, 4-second infusion catheter, 5-regulator, 6-liquid filter, 61-first one-way anti-reflux valve, 62-the first Two one-way anti-reflux valves, 63-medicine liquid filter membrane, 7-connection port, 8-end infusion tube, 9-intravenous infusion needle.

【Detailed ways】

Referring to Fig. 1, the utility model comprises a bottle stopper puncturer 1, a first infusion catheter 2, a Murphy's dropper 3, a liquid medicine filter 6 and an intravenous infusion needle 9, and the bottle stopper puncturer 1 is connected to the first Infusion catheter 2, Murphy's dropper 3, second infusion catheter 4, liquid medicine filter 6, terminal infusion tube 8, and intravenous infusion needle 9, and the liquid medicine filter 6 is connected to the terminal infusion tube 8 through the connection port 7 Connection; the first infusion conduit 2 is provided with a liquid filling port 21 , and the second infusion conduit 4 is provided with a regulator 5 .

Referring to Fig. 2, described Murphy's dropper 3 is provided with exhaust device, and exhaust device comprises hydrophobic exhaust film 33, exhaust pipe 34, vent hole 36, and described Murphy's dropper 3 upper ends are equipped with Hydrophobic venting film 33, the exterior of hydrophobic venting film 33 is equipped with venting protective shell 31; Described Murphy's dropper 3 is provided with vent pipe 34 inside, and vent pipe 34 is provided with several vent holes 36; The exhaust pipe 34 is connected with the second infusion conduit 4 , and the lower part of the exhaust pipe 34 is provided with a liquid guide groove 35 , and the liquid guide groove 35 communicates with the second infusion conduit 4 . The upper part of the exhaust pipe 34 is provided with several exhaust holes 36, and the height of the exhaust pipe 34 is higher than 1/2 of the height of the Murphy's dropper 3 . The exhaust protection shell 31 is arranged on the outer wall of the Murphy's dropper 3 , and the exhaust protection shell 31 is provided with a ventilation hole 32 .

Referring to FIG. 3 , the medical liquid filter 6 is provided with a first one-way anti-return valve 61 and a second one-way anti-return valve 62 . The first one-way anti-return valve 61 and the second one-way anti-return valve 62 are arranged in a convex arc shape, and the first one-way anti-return valve 61 and the second one-way anti-return valve 62 are located at the entrance of the liquid medicine filter 6. sides. The liquid medicine filter 6 is provided with a liquid medicine filter membrane 63 .

The working process of the utility model:

During the working process of the infusion device of the utility model, the cork puncturer 1 penetrates into the medicine bottle, and the medicinal liquid flows through the cork puncturer 1, the first infusion catheter 2, the Murphy's dropper 3, and the second infusion catheter in sequence. 4. The liquid medicine filter 6, the terminal infusion tube 8, and the intravenous infusion needle 9, because the exhaust pipe 34 seals the outlet of the Murphy's dropper 3, the liquid medicine can only flow down from the liquid guide groove 35 on the exhaust pipe 34 , when the liquid level rose to seal the top of the vent hole 36, the gas in the chamber was compressed to form a positive pressure, and the medicinal liquid was pressed in from the top of the vent hole 36 earlier. When the medicinal liquid seeps down, the medicinal liquid impacting the lower end of the Murphy's dropper 3 may trap air bubbles, and the air vent 36 can also stop the impacting air bubbles.

There is no need to invert or squeeze the Murphy's dropper 3, and there is no need to close the flow regulator 5. Due to the surface tension and capillary action of the liquid and gas, the gas will be exhausted first, and when the liquid level continues to rise and overflow the vent hole 36 The liquid that breaks through the surface tension enters the hollow interior of the exhaust pipe 34 through the liquid guide groove 35, and the air in the Murphy's dropper 3 can be discharged through the hydrophobic exhaust film 33 on the upper end of the Murphy's dropper 3, and the exhaust protection shell 31 To the effect of protecting the hydrophobic venting membrane 33, the hygiene of the hydrophobic venting membrane 33 can also be ensured.

The liquid flows through the liquid medicine filter 6 through the infusion pipeline below the Murphy's dropper 3, and the first one-way anti-return valve 61 and the second one-way anti-return valve 62 provided in the liquid medicine filter 6 act as medicine When the liquid flows normally, the pressure of the liquid medicine impacts the anti-return valve, and the liquid passes through the middle of the first one-way anti-return valve 61 and the second one-way anti-return valve 62 to the liquid filter membrane 63; when the return of blood occurs, the liquid flows in the opposite direction At this time, the elastic support of the first one-way anti-return valve 61 and the second one-way anti-return valve 62 returns to the original position, blocking the infusion channel of the liquid medicine filter 6, and the infusion channel is blocked, so that the single flow of the liquid is realized. to the flow. The medicinal liquid is finally infused into the patient's body through the intravenous infusion needle 9 .

The state of returning blood is to arrive in the terminal transfusion tube 8, and the length of terminal transfusion tube 8 is shorter than existing length, also shortens the maximum blood return length, avoids the injury to patient's body.

The utility model has a simple structure, can automatically exhaust during the infusion process, prevents air bubbles from being brought into the infusion catheter, and is safe and convenient to use. The anti-blood return valve is added to the liquid medicine filter 6 to realize the one-way flow of the liquid medicine, which is beneficial to the existing The structural change of the infusion set is not too large, the processing is convenient, and the popularization degree is high.

The above-mentioned embodiment is an illustration of the utility model, not a limitation of the utility model, and any scheme after a simple transformation of the utility model belongs to the protection scope of the utility model.

Claims (6)

1. an infusion set, is characterized in that: comprise bottle stopper piercer (1), the first infusion catheter (2), Murphy's dropper (3), medicinal liquid filter (6) and intravenous infusion needle (9) ), the bottle stopper piercer (1) is sequentially connected to the first infusion catheter (2), Murphy's dropper (3), the second infusion catheter (4), the liquid medicine filter (6), the terminal infusion tube ( 8), the intravenous infusion needle (9), the liquid medicine filter (6) is connected with the terminal infusion tube (8) through the connection port (7); the Murphy's dropper (3) is provided with an exhaust device, the exhaust device includes a hydrophobic exhaust film (33), an exhaust pipe (34), and an exhaust hole (36), and the upper end of the Murphy's dropper (3) is equipped with a hydrophobic exhaust film (33), and the hydrophobic The exhaust film (33) is equipped with an exhaust protection shell (31) outside; the inside of the Murphy's dropper (3) is provided with an exhaust pipe (34), and the exhaust pipe (34) is provided with several exhaust holes (36); The medical liquid filter (6) is provided with a first one-way anti-return valve (61) and a second one-way anti-return valve (62). 2. A kind of infusion set as claimed in claim 1, characterized in that: said exhaust pipe (34) is connected with the second infusion conduit (4), and the bottom of the exhaust pipe (34) is provided with a guide groove ( 35), the liquid guide groove (35) is in communication with the second infusion conduit (4). 3. A kind of infusion device as claimed in claim 1, characterized in that: the upper part of the exhaust pipe (34) is provided with several exhaust holes (36), and the height of the exhaust pipe (34) is higher than that of Murphy. 1/2nd of the height of Shi's dropper (3). 4. A kind of infusion set as claimed in claim 1, characterized in that: the exhaust protection shell (31) is arranged on the outer wall of Murphy's dropper (3), and the exhaust protection shell (31) is provided with a through hole. Stomata (32). 5. A kind of infusion set as claimed in claim 1, characterized in that: the first one-way anti-return valve (61) and the second one-way anti-return valve (62) are arranged in a convex arc shape, and the first one-way anti-return valve (62) is arranged in a convex arc shape. The one-way anti-return valve (61) and the second one-way anti-return valve (62) are located on both sides of the inlet of the liquid medicine filter (6). 6. A kind of infusion set as claimed in claim 1, is characterized in that: said first infusion conduit (2) is provided with liquid filling port (21), on the second infusion conduit (4) regulator ( 5); the liquid medicine filter (6) is provided with a liquid medicine filter membrane (63).