CN218280257U - Filter for multi-path infusion and infusion device - Google Patents

Abstract

The utility model discloses a filter and an infusion device for multi-channel infusion. The filter includes a filter shell, which is provided with a liquid inlet and a liquid outlet. The filter shell is provided with a shell cavity, and the liquid inlet is provided with a A number of drainage ports, the drainage port is aligned with the side wall of the shell cavity away from the liquid outlet, the liquid inlet, drainage port, and the shell cavity are connected in sequence, and filter paper is arranged in the shell cavity, the shape of the filter paper is funnel-shaped, and the opening of the filter paper faces the inlet The tip of the filter paper is located at the liquid outlet. After the medical personnel connect the filter with the dispensing three-way valve, the liquid medicine is sprayed from the drainage port to the inner peripheral surface of the filter paper, and the liquid medicine on the inner peripheral surface of the filter paper flows smoothly. It flows down to the tip of the filter paper. During the process of the liquid medicine flowing to the tip of the filter paper, the filter paper only allows the liquid medicine particles to pass through, and the larger crystal particles cannot pass through the filter paper, so that the crystal particles are separated from the liquid medicine. The liquid permeable filter paper flows out from the liquid outlet, thereby avoiding or reducing the harm caused by particles to the patient.

Description

A filter and infusion device for multiple infusion

technical field

The utility model relates to a medical device, in particular to a filter and an infusion device for multi-channel infusion.

Background technique

Some critically ill patients need to input multiple medicinal liquids in the same vascular access at the same time. Different medicinal liquids are stored in different syringes. Medical staff usually use several dispensing three-way valves. Each dispensing three-way valve has three interfaces, three The interface is connected in the dispensing three-way valve. The medical personnel use the infusion extension tube to connect different syringes, and then connect the same dispensing three-way valve to the infusion extension tube and other dispensing three-way valves at the same time, so that several dispensing three-way valves are connected one by one. Together, one interface of one of the dispensing three-way valves is connected to the intravenous catheter, and the intravenous catheter is indwelled in the patient's vein, so that various medicinal liquids are transferred from the syringe to the extension tube, and then to the three-way valve. The valve flows to the venous catheter to achieve the purpose of simultaneously infusing multiple medicinal liquids in the patient's body.

After mixing various medicinal liquids, a chemical reaction may occur to produce crystal particles, which flow into the patient's body along with the medicinal liquid, causing adverse reactions to the infusion of the patient and endangering the life of the patient.

Therefore, how to effectively separate the crystal particles from the liquid medicine and avoid or reduce the harm caused by the particles to patients is a technical problem to be solved urgently.

Utility model content

The purpose of this utility model is to provide a filter and an infusion device for multi-channel infusion. The filter can filter various medicinal liquids flowing into the patient's body, effectively separate the crystal particles from the medicinal liquid, and avoid or reduce the harm to patients.

In order to realize the above-mentioned purpose of the invention, the utility model adopts the following technical solutions:

A filter for multi-channel infusion, including a filter shell, the two ends of the filter shell are respectively provided with a liquid inlet and a liquid outlet, the filter shell is provided with a shell cavity, and the shell cavity is from near the liquid inlet to near the liquid outlet The diameter of the mouth gradually decreases. The liquid inlet and the liquid outlet are located on the symmetrical axis of the shell cavity. The liquid inlet is provided with a number of drainage ports. , the drainage port, and the shell cavity are connected in turn. There is filter paper in the shell cavity. The material of the filter paper is cotton fiber. The shape of the filter paper is funnel-shaped. The opening of the filter paper faces the liquid inlet. The outer peripheral surface fits the inner wall of the shell cavity.

With the filter for multi-channel infusion of the utility model, the filter paper has a filtering effect on the liquid medicine in the filter shell, the liquid medicine flows from the liquid inlet to several drainage ports, and the liquid medicine is sprayed from the drainage ports to the inner peripheral surface of the filter paper , the liquid medicine on the inner peripheral surface of the filter paper flows down to the tip of the filter paper. During the process of the liquid medicine flowing to the tip of the filter paper, the filter paper made of cotton fiber can only pass through the liquid medicine particles, and the larger crystal particles cannot pass through. Through the filter paper, the crystal particles are separated from the liquid medicine, and the filtered medicine liquid flows out from the liquid outlet through the filter paper, thereby avoiding or reducing the harm caused by the particles to the patient.

Preferably, the surface of the shell cavity close to the liquid inlet is provided with a clamping groove, the clamping groove surrounds the inner circumference of the shell cavity, the opening edge of the filter paper is clamped in the clamping groove, the drainage port is closer to the liquid outlet than the position of the clamping groove, and the clamping groove It has a limiting effect on the filter paper, prevents the filter paper from loosening, enables the liquid medicine to be sprayed on the inner peripheral surface of the filter paper smoothly, and prevents the liquid medicine from flowing into the liquid outlet from the gap between the filter paper and the shell cavity, causing the filter paper to fail to filter.

Preferably, a steel traveler is also provided in the shell cavity, and a sealing sleeve is provided on the outside of the steel traveler. The material of the sealing sleeve is rubber, and the sealing sleeve has elasticity. The filter paper is clamped between the steel traveler and the inner wall of the shell cavity. It has a limit function to prevent the filter paper from loosening, and the sealing sleeve enhances the sealing between the filter paper and the inner wall of the shell cavity, further preventing the liquid medicine from flowing into the liquid outlet from the gap between the filter paper and the shell cavity, so that the filter paper can successfully filter.

An infusion device, comprising a dispensing three-way valve, a first nozzle connector, a second nozzle connector, and a filter, the liquid inlet is provided with an external thread, the liquid outlet is provided with an internal thread, and the dispensing three-way valve is provided with One first interface and two second interfaces, the first interface is provided with internal thread, the second interface is provided with external thread, the first nozzle connector is provided with internal thread, and the first nozzle connector is threadedly connected with the second interface , the first interface is threaded with the liquid inlet, the second nozzle connector is provided with external threads, the second nozzle connector is threaded with the liquid outlet, the infusion extension tube is fixed on the first nozzle connector, and the intravenous catheter Fixed on the second nozzle connector, the filtering effect of the filter paper gradually deteriorates after the filter is used for a long time, and the dispensing three-way valve is detachably connected with the filter, so that the medical staff can replace the filter, so that the infusion device has better performance filter effect.

Preferably, the outer side of the liquid outlet is provided with an anti-slip sleeve, the material of the anti-slip sleeve is rubber, the anti-slip sleeve has elasticity, and the anti-slip sleeve enhances the friction on the outer surface of the liquid outlet, so that the medical staff prevents their hands from being caught in the liquid outlet when they rotate the liquid outlet. The outer surface slides for easier filter assembly and disassembly.

Preferably, the number of dispensing three-way valves, filters, and first nozzle connectors is several, the number of second nozzle connectors is one, and the liquid outlet is threadedly connected to the second interface, and one of the filters is connected to the In the middle of the two-pipe connection piece and the dispensing three-way valve, other filters are connected in the middle of two adjacent dispensing three-way valves. The number of filters is the same as that of the dispensing three-way valve. The liquid medicine in the valve is filtered, so that the infusion device has a better filtering effect.

Description of drawings

FIG. 1 is a schematic structural view of the infusion device in Example 1.

Fig. 2 is a schematic structural view of the filter used for multiple infusion in Example 1.

3 is a cross-sectional view of the filter housing in Example 1.

Fig. 4 is a schematic structural view of the dispensing three-way valve in Embodiment 1 when it is not connected to the first nozzle connector.

Fig. 5 is a schematic structural view of the dispensing three-way valve in Example 1 when the filter and the second nozzle connector are not connected.

Reference signs: 1, filter shell; 10, shell cavity; 11, liquid inlet; 12, liquid outlet; 13, second nozzle connector; 15, filter paper; 17, anti-slip sleeve; 18, clip groove; 19 . Traveler; 2. Dispensing three-way valve; 21. First interface; 22. Second interface; 3. Infusion extension tube; 31. First nozzle connector; 32. Drainage tube.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 3, the filter for multi-channel infusion comprises a filter housing 1, the two ends of the filter housing 1 are respectively provided with a liquid inlet 11 and a liquid outlet 12, the filter housing 1 is provided with a shell chamber 10, the shell The diameter of the chamber 10 gradually decreases from near the liquid inlet 11 to near the liquid outlet 12. The liquid inlet 11 and the liquid outlet 12 are all located on the axis of symmetry of the shell cavity 10. The liquid inlet 11 is provided with a number of drainage ports for drainage. The mouth is aligned with the side wall of the shell cavity 10 away from the position of the liquid outlet 12, the liquid inlet 11, the drainage port, and the shell cavity 10 are connected in sequence, and the filter paper 15 is arranged in the shell cavity 10, and the material of the filter paper 15 is cotton fiber, and the filter paper 15 The shape of the filter paper 15 adopts a funnel shape, the opening of the filter paper 15 faces the liquid inlet 11, the tip of the filter paper 15 is located at the liquid outlet 12, the outer peripheral surface of the filter paper 15 fits the inner wall of the shell cavity 10, and the filter paper 15 has a filtering effect on the liquid medicine in the filter shell. Effect, the medicinal liquid flows from the liquid inlet 11 to several drainage ports, the medicinal liquid is sprayed from the drainage port to the inner peripheral surface of the filter paper 15, and the medicinal liquid on the inner peripheral surface of the filter paper 15 flows down to the tip of the filter paper 15, and the medicinal liquid During the process of the liquid flowing to the tip of the filter paper 15, the filter paper 15 only allows the particles of the liquid medicine to pass through, and the larger crystal particles cannot pass through the filter paper 15, so that the crystal particles are separated from the liquid medicine, and the filtered medicine liquid permeates the filter paper 15 from the liquid. The liquid outlet 12 flows out, thereby avoiding or reducing the harm caused by the particles to the patient.

The surface of the shell cavity 10 close to the liquid inlet 11 is provided with a clamping groove 18. The clamping groove 18 surrounds the inner circumference of the shell cavity 10. The opening edge of the filter paper 15 is clamped in the clamping groove 18. The drainage port is closer to the outlet than the clamping groove 18. The liquid port 12 and the clamp groove 18 have a position-limiting effect on the filter paper 15 to prevent the filter paper 15 from loosening, so that the liquid medicine can be sprayed on the inner peripheral surface of the filter paper 15 smoothly, and prevent the liquid medicine from flowing into the gap between the filter paper 15 and the shell cavity 10 The liquid outlet 12 causes the filter paper 15 to not play a filtering role.

A steel traveler 19 is also provided in the shell cavity 10, and a sealing sleeve is arranged on the outside of the steel traveler 19. The material of the sealing sleeve is rubber, and the sealing sleeve has elasticity. The filter paper 15 is clamped between the steel traveler 19 and the inner wall of the housing cavity 10, and the steel wire The ring 19 has a position-limiting effect on the filter paper 15, preventing the filter paper 15 from loosening, and the sealing sleeve enhances the sealing between the filter paper 15 and the inner wall of the shell cavity 10, and further prevents the medicinal liquid from flowing into the liquid outlet from the gap between the filter paper 15 and the shell cavity 10 12, making the filter paper 15 play a filtering role successfully.

The infusion device as shown in Figure 1 to Figure 5 comprises a three-way valve for dispensing medicine 2, a first nozzle connector 31, a second nozzle connector 13, a filter, the liquid inlet 11 is provided with an external thread, and the liquid outlet 12 is provided with an internal thread, and the dispensing three-way valve 2 is provided with a first interface 21 and two second interfaces 22, the first interface 21 is provided with an internal thread, the second interface 22 is provided with an external thread, and the first nozzle connector 31 is provided with an internal thread, the first nozzle connector 31 is threaded with the second interface 22, the first interface 21 is threaded with the liquid inlet 11, the second nozzle connector 13 is provided with an external thread, and the second nozzle is connected The part 13 is threadedly connected with the liquid outlet 12, the infusion extension tube 3 is fixed on the first nozzle connector 31, and the intravenous catheter is fixed on the second nozzle connector 13. After the filter is used for a long time, the filtering effect of the filter paper 15 is gradually reduced. As a result, the dispensing three-way valve 2 is detachably connected with the filter, so that the medical staff can replace the filter, so that the infusion device has a better filtering effect.

The outer side of liquid outlet 12 is provided with anti-slip cover 17, and the material of anti-slip cover 17 adopts rubber, and anti-slip cover 17 has elasticity, and anti-slip cover 17 strengthens the frictional force of liquid outlet 12 outer surfaces, prevents hand when medical personnel rotates liquid outlet 12. Sliding on the outer surface of the liquid outlet 12 makes it easier to assemble and disassemble the filter.

The number of dispensing three-way valve 2, filter, and first nozzle connector 31 is several, the number of second nozzle connector 13 is one, the liquid outlet 12 is threadedly connected with the second interface 22, and one of the filters is connected In the middle of the second nozzle connector 13 and the dispensing three-way valve 2, other filters are connected in the middle of two adjacent dispensing three-way valves 2, the number of filters is the same as that of the dispensing three-way valve 2, and several filters Filter the liquid medicine in several dispensing three-way valves 2 respectively, so that the infusion device has a better filtering effect.

The above description is the preferred embodiment of the present utility model. For those of ordinary skill in the art, without departing from the principle of the present utility model, some modifications and improvements can also be made, and these should also be regarded as the protection of the present utility model. scope.

Claims (6)

1. A filter for multiple infusions, comprising: including filtering shell (1), the both ends of filtering shell (1) are equipped with into liquid mouth (11) and liquid outlet (12) respectively, are equipped with shell chamber (10) in filtering shell (1), and shell chamber (10) reduces to the bore that is close to liquid outlet (12) from being close to income liquid mouth (11), go into liquid mouth (11) liquid outlet (12) all are located the symmetry axis of shell chamber (10), it is equipped with a plurality of drainage mouths to go into liquid mouth (11), the drainage mouth aims at the position that liquid outlet (12) were kept away from to shell chamber (10) lateral wall, goes into liquid mouth (11), drainage mouth, shell chamber (10) and communicates in proper order, is equipped with in shell chamber (10) 15), the material of filter paper (15) adopts cotton fiber, and the shape of filter paper (15) adopts hourglass hopper-shaped, and the opening of filter paper (15) is towards income liquid mouth (11), and the pointed end of filter paper (15) is located liquid outlet (12), and laminating shell chamber (10) inner wall of outer peripheral face.

2. The filter for multiple infusions of claim 1, wherein: the surface of the shell cavity (10) close to the liquid inlet (11) is provided with a clamping groove (18), the clamping groove (18) surrounds the inner circumference of the shell cavity (10) for one circle, the opening edge of the filter paper (15) is clamped in the clamping groove (18), and the drainage port is close to the liquid outlet (12) than the position of the clamping groove (18).

3. The filter for multiple infusions of claim 1, wherein: a steel wire ring (19) is further arranged in the shell cavity (10), a sealing sleeve is arranged on the outer side of the steel wire ring (19), the sealing sleeve is made of rubber and has elasticity, and the filter paper (15) is clamped between the steel wire ring (19) and the inner wall of the shell cavity (10).

4. An infusion device, characterized in that: including dispensing three-way valve (2), first mouth of pipe connecting piece (31), second mouth of pipe connecting piece (13), claim 1 to 3 arbitrary any one the filter, it is equipped with the external screw thread to go into liquid mouth (11), liquid outlet (12) are equipped with the internal thread, dispensing three-way valve (2) is equipped with one first interface (21) and two second interfaces (22), first interface (21) is equipped with the internal thread, second interface (22) are equipped with the external screw thread, first mouth of pipe connecting piece (31) is equipped with the internal thread, first mouth of pipe connecting piece (31) with second interface (22) threaded connection, first interface (21) with go into liquid mouth (11) threaded connection, second mouth of pipe connecting piece (13) is equipped with the external screw thread, second mouth of pipe connecting piece (13) with liquid outlet (12) threaded connection.

5. The infusion device of claim 4, wherein: the outer side of the liquid outlet (12) is provided with an anti-slip sleeve (17), the anti-slip sleeve (17) is made of rubber, and the anti-slip sleeve (17) has elasticity.

6. The infusion device of claim 4, wherein: the three-way valve (2) that dispenses the medicine filter the quantity of first mouth of pipe connecting piece (31) is a plurality of, the quantity of second mouth of pipe connecting piece (13) is one, liquid outlet (12) with second interface (22) threaded connection, one of them filter is connected in the centre of second mouth of pipe connecting piece (13) and three-way valve (2) that dispenses, and other filters are connected in the centre of two adjacent three-way valves that dispense (2).

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