CN204563124U - Safety type disposable infusion set - Google Patents

Abstract

The utility model discloses safety type disposable infusion set, dropping funnel hypomere (4b) is built with float valve (5), float valve (5) outside is gear-like sidewall, float valve (5) top is the spherical convex surface of buffering, the bottom of float valve (5) is provided with recess, the falope ring cap (6) that one end is provided with diaphragm seal (6a) is embedded in the base recess of float valve (5), recess inwall and falope ring cap joint have air channel (5a), and diaphragm seal (6a) flushes with float valve (5) bottom surface and just to the infusion port (4b1) of dropping funnel hypomere (4b).This utility model is automatic plugging dropping funnel infusion port (5a) when transfusion completes, and makes the medicinal liquid in infusion pipeline (8) stop flowing, prevents air from entering in patient body and the backflow of body inner blood, ensures safe infusion.

Description

Safety disposable infusion set

technical field

The utility model relates to a sterile medical device used for clinical infusion, in particular to a safe disposable transfusion device.

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 disposable 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, and prevents air from entering the patient's body and blood backflow in the body. Ensure 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, an infusion catheter, a flow regulator, a liquid medicine filter and a vein The infusion needle and the cork piercer are set on the upper part of the dropping funnel, and the lower part of the dropping funnel is equipped with a float valve. The bottom of the dropping funnel is connected to one end of the infusion catheter, and the other end of the infusion catheter passes through the flow regulator and connects to the liquid inlet of the liquid medicine filter. , the liquid outlet of the liquid medicine filter is connected to the intravenous infusion needle, forming a safe disposable infusion set as a whole; its characteristics are: the outside of the float valve is a gear-shaped side wall, the top of the float valve is a buffer spherical convex surface, There is a notch at the bottom, and the silicone ring cap with a sealing film at one end is embedded in the bottom notch of the float valve. There is a ventilation groove at the joint between the inner wall of the notch and the silicone ring cap, and the sealing film is flush with the bottom surface of the float valve and facing the dripping funnel. The lower infusion port.

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 infusion catheter, 8 flow regulator, 9 intravenous infusion needle (single blade), 10 Liquid medicine filter (straight port), 11 trident, 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 groove, 6a sealing film, 7a infusion short Tube, 11a heparin cap, 9A intravenous infusion needle (double leaf), 10A liquid medicine filter (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, an infusion catheter 7, and a flow regulator 8. Liquid medicine filter (straight mouth) 10 and intravenous infusion needle (single blade) 9, bottle stopper piercer 2 set on the upper section 4a of the drip funnel, a float valve 5 is installed in the lower section 4b of the drip funnel, and the bottom of the drip funnel is connected to the infusion solution One end of the conduit 7, the other end of the infusion conduit 7 passes through the flow regulator 8 to connect to the liquid inlet of the liquid medicine filter (straight port) 10, and the liquid outlet of the liquid medicine filter (straight port) 10 is connected to the intravenous infusion needle (single Blade) 9, which constitutes a safety disposable infusion set as a whole; its feature is: 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, and the bottom of the float valve 5 is provided with a notch 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. 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 is flush with the bottom surface of the float valve 5 and is facing the drip. The infusion port 4b1 of the bucket lower section 4b.

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 ventilation 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 intravenous infusion needle (single blade) 9 is replaced by an intravenous infusion needle (double blade) 9A, and the liquid medicine filter (straight port) 10 is replaced by a liquid medicine filter (screw mouth) 10A alternative.

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 line 7, 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 type disposable infusion set, it comprises protective sleeve (1), bottle plug puncture unit (2), air filter (3), dropping funnel (4), float valve (5), falope ring cap (6), transfusion catheter (7), flow regulator (8), liquid medicine filter (10) and venoclysis needle (9), bottle plug puncture unit (2) is sleeved on dropping funnel epimere (4a), dropping funnel hypomere (4b) is built with float valve (5), the bottom of dropping funnel (4) connects transfusion catheter (7) one end, the other end of transfusion catheter (7) connects the inlet of liquid medicine filter (10) through flow regulator (8), the liquid outlet connecting intravenous infusion pin (9) of liquid medicine filter (10), overall formation safety type disposable infusion set, it is characterized in that: the outside of float valve (5) is gear-like sidewall, the top of float valve (5) is the spherical convex surface of buffering, the bottom of float valve (5) is provided with recess, the falope ring cap (6) that one end is provided with diaphragm seal (6a) is embedded in the base recess of float valve (5), recess inwall and falope ring cap joint have air channel (5a), and diaphragm seal (6a) flushes with float valve (5) bottom surface and just to the infusion port (4b1) of dropping funnel hypomere (4b).

2. safety type disposable infusion set according to claim 1, is characterized in that: the external diameter of float valve (5) is more smaller than dropping funnel hypomere (4b) internal diameter, and under the gap length guarantee transfusion state of air channel (5a), liquid cannot enter float valve (5) cavity.

3. safety type disposable infusion set according to claim 1, it is characterized in that: dropping funnel epimere (4a) inner joint is provided with at dropping funnel hypomere (4b) external tapping end position place and only rises bank (4a1), and float valve (5) is active in and only rises between bank (4a1) and infusion port (4b1).

4. safety type disposable infusion set according to claim 1, is characterized in that: the upper integrated injection molding dropping funnel lid (2a) of bottle plug puncture unit (2) and pore (2b), installs air filter (3) in pore (2b).

5. safety type disposable infusion set according to claim 1, is characterized in that: dropping funnel (4) capacity after dropping funnel epimere (4a) and dropping funnel hypomere (4b) combine is respectively: 6cc, 8cc, 10cc, 12cc, 14cc.