CN204563128U - Safety type precision filter infusion set - Google Patents

Abstract

The utility model discloses a safe precision filter infusion set. A float valve (5) is installed in the lower section (4b) of the drip funnel. The outside of the float valve (5) is a gear-shaped side wall. There is a notch at the bottom of the valve (5), and the silicone ring cap (6) with a sealing film (6a) at one end is embedded in the notch at the bottom of the float valve (5), and there is a ventilation groove at the joint between the inner wall of the notch and the silicone ring cap (5a), the sealing film (6a) is flush with the bottom surface of the float valve (5) and facing the infusion port (4b1) of the lower part of the dropping funnel (4b). The utility model automatically blocks the infusion port of the drip funnel when the infusion is completed, so that the liquid medicine in the infusion pipeline stops flowing, prevents air from entering the patient's body and blood backflow in the body, and ensures safe infusion.

Description

Safety precision filter infusion set

technical field

The utility model relates to a sterile medical device used for clinical infusion, in particular to a safety precision filter infusion set.

Background technique

In the clinical infusion process, usually a medical staff has to take care of the infusion of patients in several wards. If the infusion bottle is replaced in time or the infusion needle is pulled out, the liquid level drops too low, causing gas to enter the human body and cause gas embolism and other adverse consequences, which brings a heavy mental burden to medical staff, patients or patients' families.

Contents of the invention

The purpose of this utility model is to provide a safe precision filter infusion set, which can automatically block the liquid outlet of the drip funnel when the infusion is nearly completed, so that the liquid in the infusion line stops flowing, prevents air from entering the patient's body and blood backflow in the body, and ensures Safety.

The utility model is realized through the following technical solutions: the infusion set includes a protective cover, a bottle stopper puncturer, an air filter, a drip funnel, a float valve, a silicone ring cap, a long catheter, a flow regulator, a precision liquid medicine filter, Two-way connector and intravenous infusion needle, bottle stopper piercer set on the upper part of the drip funnel, the lower part of the drip funnel is equipped with a float valve, the bottom of the drip funnel is connected to one end of the long catheter, and the other end of the long catheter passes through the flow regulator to connect to the precision liquid medicine The liquid inlet of the filter and the liquid outlet of the precision liquid medicine filter are connected with the intravenous infusion needle through a short catheter and a two-way joint, forming a safety type precision filter infusion set as a whole; the characteristic is that the outside of the float valve is a gear-shaped side The top of the float valve is a buffer spherical convex surface, the bottom of the float valve is provided with a notch, and the silicone ring cap with a sealing film at one end is embedded in the bottom notch of the float valve, and there is a ventilation groove at the joint between the inner wall of the notch and the silicone ring cap , the sealing film is flush with the bottom surface of the float valve and facing the infusion port in the lower part of the drip funnel.

Wherein, the outer diameter of the float valve is slightly smaller than the inner diameter of the lower part of the dropping funnel, and the gap size of the ventilation groove ensures that the liquid cannot enter the cavity of the float valve under normal infusion conditions.

Wherein, the inner interface of the upper section of the dripping funnel is provided with a rising stop at the end of the outer interface of the lower section of the dripping funnel, and the float valve moves between the rising stopping and the infusion port.

Wherein, the drop funnel cover and air hole are integrally injection-molded on the bottle stopper piercer, and an air filter is installed in the air hole.

Among them, the capacity of the dripping funnel after the combination of the upper part of the dropping funnel and the lower part of the dropping funnel is: 6cc, 8cc, 10cc, 12cc, 14cc.

When the infusion starts, the liquid first drops on the spherical buffer convex surface of the float valve and then diverts to the gear-shaped hole on the side wall to flow into the bottom of the drip funnel. As the liquid level rises, the float valve rises under the buoyancy of the liquid, and the sealing film breaks away. The infusion port realizes the infusion process. When the infusion is nearly completed, the floating valve will drop with the liquid level until the sealing film contacts the infusion port. Air does not enter the infusion pipeline, thereby preventing air from entering the human body and blood backflow in the body, and realizing safe infusion.

The utility model has the advantages of simple structure, safety and reliability. When the infusion is about to be completed, the liquid outlet of the drip funnel of the infusion device is automatically blocked, so that the liquid medicine in the infusion pipeline stops flowing, thereby automatically ending the infusion, so as to prevent air from entering the patient's body and the blood in the body. Backflow ensures safe infusion, which has very positive significance for further reducing and avoiding the occurrence of medical accidents.

Description of drawings

Fig. 1 is the overall structure diagram of the utility model.

Fig. 2 is an overall structural diagram of another embodiment of the present invention.

Figure 3 is a bottom view of the float valve.

In the figure: 1 protective cover, 2 cork piercer, 3 air filter, 4 drip funnel, 5 float valve, 6 silicone ring cap, 7 long catheter, 8 flow regulator, 9 intravenous infusion needle (single blade), 10 Liquid medicine precision filter, 11 two-way joint (straight port), 12 three-fork, 2a drip funnel cover, 2b air hole, 4a upper part of drip funnel, 4b lower part of drip funnel, 4a1 stop riser, 4b1 infusion port, 5a ventilation tank, 6a Sealing film, 7a short catheter, 12a heparin cap, 9A intravenous infusion needle (double leaf), 11A two-way connector (screw port).

Detailed ways

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

As shown in Figure 1, the safety disposable infusion set includes a protective cover 1, a cork piercer 2, an air filter 3, a drip funnel 4, a float valve 5, a silicone ring cap 6, a long catheter 7, and a flow regulator 8. Precision liquid medicine filter 10, two-way connector (straight mouth) 11, intravenous infusion needle (single blade) 9, bottle stopper puncturer 2 set on the upper section 4a of the drip funnel, and a float valve 5 is installed in the lower section 4b of the drip funnel, The bottom of the dropping funnel is connected to one end of the long conduit 7, and the other end of the long conduit 7 passes through the flow regulator 8 to connect the liquid inlet of the liquid medicine precision filter 10, and the liquid outlet of the medicine liquid precision filter 10 passes through the short conduit 7a and two The connecting joint (straight port) 11 communicates with the intravenous infusion needle (single blade) 9, and constitutes a safety precision filter infusion set as a whole; its feature is that the outside of the float valve 5 is a gear-shaped side wall, and the top of the float valve 5 is Buffer spherical convex surface, the bottom of the float valve 5 is provided with a notch, and a silicone ring cap 6 with a sealing film 6a at one end is embedded in the notch at the bottom of the float valve 5, and there is a ventilation groove 5a at the joint between the inner wall of the notch and the silicone ring cap. The membrane 6a is flush with the bottom surface of the float valve 5 and facing the infusion port 4b1 of the lower section 4b of the dropping funnel.

As shown in Figures 1 and 3, the outer diameter of the float valve 5 is slightly smaller than the inner diameter of the lower section 4b of the dropping funnel, and the gap size of the vent groove 5a ensures that the liquid cannot enter the cavity of the float valve 5 under normal infusion conditions.

As shown in Fig. 1 , the inner interface of the upper section 4a of the dropping funnel is provided with a lift-stop 4a1 at the end of the outer interface of the lower section 4b of the drip funnel, and the float valve 5 moves between the lift-stop 4a1 and the infusion port 4b1.

As shown in FIG. 1 , the cork piercer 2 is integrally injection-molded with a dropping funnel cover 2 a and an air hole 2 b, and an air filter 3 is installed in the air hole 2 b.

As shown in Figure 2, it is another embodiment of Figure 1, the two-way connector (straight port) 11 is replaced by a two-way connector (screw port) 11A, and the intravenous infusion needle (single blade) 9 is replaced by an intravenous infusion needle (double blade) 9A replaces, adds trident 12 in front of precision liquid medicine filter 10.

When the infusion starts, the liquid first drops on the spherical buffer convex surface of the float valve 5 and then diverts to the gear-shaped hole on the side wall and flows into the bottom of the lower section 4b of the drip funnel. As the liquid level rises, the float valve 5 rises under the buoyancy of the liquid , the sealing film 6a is separated from the infusion port 4b1 to realize the infusion process; when the infusion is nearly completed, the float valve 5 drops with the liquid level, and when the sealing film 6a contacts the infusion port 4b1, under the atmospheric pressure and the pressure of the float valve 5's own weight, it seals The membrane 6a tightly seals the infusion port 4b1 so that air does not enter the infusion pipeline, thereby preventing air from entering the human body and backflow of blood in the body, and realizing safe infusion.

The above is only for the purpose of illustrating the technical solution of the utility model, rather than limiting the utility model. Those skilled in the art can also make various changes and modifications without departing from the spirit and scope of the utility model , all equivalent technical solutions also belong to the category of the present utility model.

Claims (5)

1. Safety precision filter infusion set, which includes protective cover (1), cork piercer (2), air filter (3), drip funnel (4), float valve (5), silicone ring cap (6) , long catheter (7), flow regulator (8), precision liquid medicine filter (10), two-way connector (11) and intravenous infusion needle (9), bottle stopper piercer (2) set in the upper part of the drip funnel ( 4a), the lower part of the dripping funnel (4b) is equipped with a float valve (5), the bottom of the dripping funnel (4) is connected to one end of the long conduit (7), and the other end of the long conduit (7) passes through the flow regulator (8) to connect The liquid inlet of the precision medicine liquid filter (10), the liquid outlet of the medicine liquid precision filter (10) are connected with the intravenous infusion needle (9) through the short catheter (7a) and the two-way joint (11), and the whole constitutes a safe type precision filter infusion set; its features are: the outside of the float valve (5) is a gear-shaped side wall, the top of the float valve (5) is a buffer spherical convex surface, the bottom of the float valve (5) is provided with a notch, and one end is provided with The silicone ring cap (6) of the sealing film (6a) is embedded in the bottom notch of the float valve (5). There is a ventilation groove (5a) at the joint between the inner wall of the notch and the silicone ring cap. The sealing film (6a) and the float valve (5 ) is flush with the bottom surface and facing the infusion port (4b1) of the lower part of the dropping funnel (4b). 2. The safe precision filter infusion set according to claim 1, characterized in that: the outer diameter of the float valve (5) is slightly smaller than the inner diameter of the lower part of the drip funnel (4b), and the gap size of the ventilation groove (5a) ensures the infusion state The lower liquid cannot enter the cavity of the float valve (5). 3. The safe precision filter infusion set according to claim 1, characterized in that: the inner interface of the upper section of the drip funnel (4a) is provided with a stop riser (4a1) at the end of the outer interface of the lower section of the drip funnel (4b), The float valve (5) is active between the lift stop (4a1) and the infusion port (4b1). 4. The safe precision filter infusion set according to claim 1, characterized in that: the dropper cover (2a) and the air hole (2b) are integrally injection-molded on the bottle stopper piercer (2), and air is installed in the air hole (2b) filter (3). 5. The safe precision filter infusion set according to claim 1, characterized in that: the capacity of the dripping funnel (4) after the combination of the upper part of the dripping funnel (4a) and the lower part of the dripping funnel (4b) is: 6cc, 8cc, 10cc , 12cc, 14cc.