CN201735016U - an infusion set - Google Patents

Abstract

The utility model discloses an infusion device, comprising a Murphy's dropper and a suspension installed in the Murphy's dropper, wherein a liquid inlet and a liquid outlet are respectively arranged at the top and bottom of the Murphy's dropper, and spiral convex strips or grooves with the same rotation direction are arranged on the top surface of the suspension along the circumferential direction. When the medicine liquid enters the drip bucket from the liquid inlet, the liquid droplets hit the spiral convex strips or grooves on the top surface of the suspension, so that the suspension rotates, so that medical staff can judge whether the medicine liquid has been dripped and roughly estimate the dripping speed of the liquid droplets by observing the rotation speed of the suspension at a distance, thereby improving the safety of infusion and reducing the workload of medical staff.

Description

an infusion set

technical field

The utility model relates to an infusion device for gravity infusion, in particular to an infusion set.

Background technique

Commonly used infusion set comprises cannula, Murphy's dropper, filter and regulator, and cannula, Murphy's dropper, filter and regulator are communicated with catheter successively. When the infusion reaches the end and there is no liquid dripping from the Murphy's dropper, the infusion set should be removed in time or the regulator should be closed to stop the infusion, otherwise air will enter the human body or venous blood will reflux, resulting in adverse consequences. However, the current infusion set uses a Murphy's dropper to observe the flow of the infusion set and whether the infusion is completed. Since the liquid medicine is generally colorless and the droplets are small, patients and nursing staff need to observe carefully at close range to see the dripping funnel clearly. It is very inconvenient whether the drip speed of the middle liquid droplet and the medicinal liquid are dripped.

Utility model content

The purpose of the utility model is to provide an infusion device which can easily observe the dripping speed of the liquid drop and whether the liquid medicine is dripped out during the infusion process.

In order to achieve the above object, the technical solution adopted by the utility model is:

A kind of infusion device, comprises Murphy's dropper and the suspension that is contained in Murphy's dropper, is provided with liquid inlet and liquid outlet respectively on the top and bottom of Murphy's dropper, on the top surface of described suspension The circumferential direction is provided with spiral protrusions or grooves with the same rotation direction.

By setting spiral ridges or grooves on the top surface of the suspension, when the medicinal liquid enters the dropping funnel from the liquid inlet, the droplets hit the spiral ridges or grooves on the top surface of the suspension, causing the suspension to rotate , so that it is convenient for medical staff to judge whether the medicinal liquid is dripped and roughly estimate the dripping speed of the liquid by observing the rotation speed of the suspension at a distance, which improves the safety of infusion and reduces the workload of medical staff.

As an improvement of the above technical solution, the top surface of the suspension is a convex arc surface to facilitate the rotation of the suspension.

As another improvement of the above technical solution, each of the ridges or grooves extends from the center of the top surface to the periphery of the top surface.

As another improvement of the above technical solution, the lower part of the suspension is in the shape of a cone with a large top and a small bottom, and the liquid outlet of the dropping funnel is in the shape of a cone matching the conical lower part of the suspension. When the infusion is completed, the suspension drops together with the liquid level in the dropping funnel, and finally blocks the liquid outlet under the action of gravity to close the liquid outlet to prevent air from entering the human body. At the same time, because the infusion tube maintains a high pressure , can avoid the phenomenon of venous return. In this way, even if the patient and nursing staff do not realize that the infusion has been completed, adverse consequences can be avoided.

As another improvement of the above technical solution, a limit frame is provided in the dropping funnel, the limit frame has an upper end opening and a lower end opening, the upper end opening of the limit frame is opposite to the liquid inlet, the limit frame The lower end of the opening is opposite to the liquid outlet, and the suspension is located in the limit frame and can freely move up and down in the limit frame. The suspension is limited by the limit frame so that it can only move up and down in the limit frame to ensure that the droplet can always hit the center of the top surface of the suspension.

As another improvement of the above technical solution, the spacer is cylindrical, and the diameter of the upper opening of the spacer is smaller than the maximum diameter of the suspension, so that when the liquid level in the dropping funnel is high, it can avoid The suspended body rushes out from the limit frame.

As another improvement of the above technical solution, a filter is also included, the filter includes a casing and a filter layer arranged in the casing, and the inner chamber of the casing is divided into an upper cavity at the upper part and a lower cavity at the lower part by the filter layer, A liquid inlet is provided on the top of the upper chamber, and the liquid inlet of the upper chamber communicates with the liquid outlet of the dropping funnel through a conduit.

As another improvement of the above technical solution, an exhaust pipe is provided on the side of the conduit, and the exhaust pipe communicates with the upper cavity of the housing and the inner cavity of the Murphy's dropper, and the exhaust pipe The openings at the upper and lower ends are respectively higher than the openings at the upper and lower ends of the conduit. The gas in the upper chamber of the filter can be discharged into the Murphy's dropper through the pressure difference, so as to avoid the air from entering the human body, and at the same time, it can also avoid the infusion gas embolism caused by the gas in the catheter. Because of the higher pressure in the infusion tube, venous backflow can be avoided.

Compared with the prior art, the utility model has the advantages that it is very easy to observe the dripping speed of the liquid drop and whether the liquid medicine is dripped during the infusion, which is convenient to use; moreover, it can also prevent air from entering the human body and venous blood backflow Phenomenon, high security.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the front view of suspension in the utility model embodiment;

Fig. 3 is a top view of the suspension in the embodiment of the utility model.

Explanation of reference signs:

1-input tube, 2-Murphy's dropper, 2a-liquid outlet, 3-limit frame, 3a-upper opening, 4-suspension, 4a-raised bar or groove, 5-pipe, 5a-exhaust Tube, 6-filter, 6a-filter layer, 6b-housing, 7-output pipe, 7a-joint.

Detailed ways

Embodiment of the utility model is described in detail below in conjunction with accompanying drawing:

See Fig. 1, which is a schematic structural view of one embodiment of the present invention, in which only part of the structure of the infusion set is shown, and other parts not shown are the same as those of the prior art.

As can be seen from Fig. 1, the infusion set of the present embodiment comprises input tube 1, Murphy's dropper 2, suspension 4, limit frame 3, conduit 5, filter 6 and output tube 7, wherein, Murphy's dropper The top and the bottom of 2 are respectively provided with liquid inlet and liquid outlet 2a, and one end of input pipe 1 stretches in the Murphy's dropper 2 from the liquid inlet, and liquid outlet 2a is the conical shape of upper big and lower bottom. In the Murphy's dropper 2, there is a cylindrical spacer 3 for limiting the suspension 4. The spacer 3 has an upper opening 3a and a lower opening. The lower opening of the spacer 3 is connected to the liquid outlet. 2a, the upper opening 3a of the spacer 3 is opposite to the liquid inlet, and the upper opening 3a is narrowed. A suspension 4 is housed in the spacer 3 .

Referring to Fig. 2 and Fig. 3, the top surface of the suspension body 4 is a spherical surface, and the top surface 4b of the suspension body 4 is provided with 4 helical convex lines or grooves 4a along the circumference, and the rotation of the 4 convex lines or grooves 4a The directions are the same, clockwise, and each convex line or groove 4a extends from the center of the top surface 4b to the periphery of the top surface 4b. The lower part 4c of the suspension 4 is conical with a large top and a small bottom, and the conical lower part 4c of the suspension 4 cooperates with the conical liquid outlet 2a of the Murphy pipette 2 .

Continue to refer to Fig. 1, filter 6 comprises shell 6b and is arranged on the filter layer 6a in shell 6b, the inner cavity of this shell 6b is divided into the upper cavity that is positioned at the top and the lower cavity that is positioned at the bottom by this filter layer 6a, in this upper cavity The top of the upper chamber is provided with a liquid inlet, and the liquid inlet of the upper chamber communicates with the liquid outlet 2a of the Murphy's burette 2 through a conduit 5 . The side of conduit 5 is provided with exhaust pipe 5a, and this exhaust pipe 5a communicates with the inner cavity of the upper cavity of housing 6b and Murphy's dropper 2, and the opening of the upper and lower ends of this exhaust pipe 5a is higher than conduit respectively. The height of the openings at the upper and lower ends of 5. A liquid outlet is provided at the bottom of the lower cavity, and the liquid outlet is connected to one end of the output pipe 7, and the other end of the output pipe 7 is provided with a joint 7a.

During infusion, the liquid medicine in the medicine bottle enters the Murphy's dropper 2 from the input tube 1, and when the liquid medicine reaches a certain height, the suspension 4 leaves the liquid outlet 2a under the action of buoyancy and floats on the liquid surface. At this time, the liquid drop hits the spiral ridge 4a on the top surface of the suspension 4, thereby causing the suspension 4 to rotate. In this way, by observing the rotation speed of the suspension 4, it can be judged whether the liquid medicine has been dripped and a rough estimation of the liquid drop. drop rate. The air in the filter 6 upper cavity enters in the Murphy's dropper 2 through exhaust pipe 5a, to avoid air from entering the human body. After the medicinal liquid in the medicine bottle is transfused, the suspension 4 stops rotating, and the liquid level begins to drop at the same time, and finally the suspension 4 is blocked at the liquid outlet 2a under the action of gravity, and the liquid outlet 2a is closed to prevent air from entering inside the human body. At the same time, due to the high pressure maintained in the infusion tube, the phenomenon of venous blood reflux can be avoided.

The above are only specific embodiments of the utility model, and do not limit the protection scope of the utility model; any replacement and improvement made on the basis of not violating the concept of the utility model all belong to the protection scope of the utility model.

Claims (8)

1. transfusion device, comprise Mo Feishi dropper (2) and be contained in the interior suspended substance (4) of Mo Feishi dropper (2), top and bottom at Mo Feishi dropper (2) are respectively equipped with inlet and liquid outlet (2a), it is characterized in that: end face (4b) upper edge in described suspended substance (4) is circumferentially with identical helical form raised line of rotation direction or groove (4a).

2. transfusion device according to claim 1 is characterized in that: the end face (4b) of described suspended substance (4) is the arc surface of evagination.

3. transfusion device according to claim 1 is characterized in that: each described raised line or groove (4a) all extend to the periphery of this end face (4b) from the central authorities of described end face (4b).

4. transfusion device according to claim 1, it is characterized in that: the bottom (4c) of described suspended substance (4) is up big and down small taper shape, the taper shape of the liquid outlet (2a) of described Mo Feishi dropper (2) for matching with the conical bottom (4c) of described suspended substance (4).

5. transfusion device according to claim 1, it is characterized in that: in described Mo Feishi dropper (2), be provided with position-limited rack (3), this position-limited rack (3) has upper end open (3a) and lower ending opening, the upper end open (3a) of this position-limited rack (3) is relative with described inlet, the lower ending opening of this position-limited rack (3) is relative with described liquid outlet (2a), described suspended substance (4) is positioned at this position-limited rack (3), and can move by easy on and off in position-limited rack (3).

6. transfusion device according to claim 5 is characterized in that: described position-limited rack (3) is for cylindric, and the diameter of the upper end open (3a) of this position-limited rack (3) is less than the maximum gauge of suspended substance (4).

7. the described transfusion device arbitrary according to claim 1 to 6, it is characterized in that: also comprise filter (6), this filter (6) comprises shell (6b) and is located at the interior filter course (6a) of shell (6b), the inner chamber of this shell (6b) is divided into superposed epicoele by this filter course (6a) and is positioned at the cavity of resorption of bottom, top at this epicoele is provided with inlet, and the inlet of this epicoele is communicated with the liquid outlet (2a) of described Mo Feishi dropper (2) through conduit (5).

8. transfusion device according to claim 7, it is characterized in that: the side at described conduit (5) is provided with exhaustor (5a), this exhaustor (5a) is communicated with the epicoele of described shell (6b) and the inner chamber of described Mo Feishi dropper (2), and the opening of the upper and lower end of this exhaustor (5a) is higher than the height of opening of the upper and lower end of described conduit (5) respectively.

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