CN204563142U - Buret type secondary filter safe transfusion system - Google Patents

Abstract

The utility model discloses a burette type precision filter safety infusion set, which is characterized in that: a floating valve (15) includes a floating body (15a) and a sealing member (15b), the outer peripheral surface of the floating body is gear-shaped, and the top is a spherical buffer convex surface, The bottom is a notch (15a1), and the seal (15b) is a silicone ring cap with a sealing film (15b1) embedded in the notch (15a1) of the floating body, facing the convex infusion port on the inner bottom of the dripping funnel ( 14a). The utility model performs precision filtration on the liquid medicine during the infusion, and automatically blocks the liquid outlet of the infusion device dripping funnel when the infusion is completed, so that the liquid medicine in the infusion pipeline stops flowing, automatically ends the infusion, and prevents air from entering the patient's body and the blood in the body Backflow to ensure safe infusion.

Description

Burette type precision filter safety infusion set

technical field

The utility model relates to a sterile medical device used for clinical infusion, in particular to a burette type precision filter safety 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 burette type precision filter safety infusion device, which can precisely filter the medicinal liquid during infusion, and automatically block the liquid outlet of the drip funnel of the infusion device when the infusion is nearly completed, so that the infusion tube at the lower end of the liquid outlet The liquid medicine in the road stops flowing, thereby automatically ending the infusion, preventing air from entering the patient's body and blood backflow in the body, and ensuring safe infusion.

The utility model is realized through the following technical solutions: the buret type precision filter safety infusion set includes a sheath, a bottle stopper puncturer, an air filter, a catheter, a stopper clamp, a sling, a heparin cap, a drip tube upper cover, and a drip tube , drop tube lower cover, micro drop tube, drop funnel, float valve, long catheter, flow regulator, trident, precision liquid filter, two-way connector and venous needle, integral injection molding air inlet on the bottle stopper piercer and Sealed by the air filter, the bottom of the cork piercer is connected to one end of the short catheter, and the other end of the short catheter passes through the liquid stop clip to connect with the liquid inlet of the drip tube cover. It is sealed by an air filter and a heparin cap and then installed on the drip tube. The bottom of the drip tube is installed with a drip tube seat. The liquid outlet of the drip tube seat is installed with a micro-drop tube and then set on the upper drip funnel. The lower drip funnel is equipped with a float valve. At the bottom of the upper dripping funnel, one end of the long conduit is connected to the bottom of the lower dripping funnel, the other end of the long conduit passes through the flow regulator to connect to the tee, and the other end of the tee connects the precision liquid filter and the two-way connector through the short conduit Installed on the two-way joint, it constitutes a burette type precision filter safety infusion set as a whole; its feature is: the float valve includes a floating body and a seal, the outer peripheral surface of the floating body is gear-shaped, the top is a spherical buffer convex surface, and the bottom is concave. The seal is a silicone ring cap with a sealing film on one side, which is embedded in the notch of the floating body and is facing the convex infusion port on the inner bottom of the dripping funnel.

Wherein, the outer diameter of the floating body is slightly smaller than the inner diameter of the lower drip funnel.

Wherein, there is a ventilation groove at the joint between the concave inner wall of the floating body and the silicone ring cap, and the size of the ventilation groove ensures that the liquid medicine cannot enter the cavity of the float valve under normal infusion conditions.

Wherein, a rise-stop sill is set in the dripping funnel, and the float valve moves between the rise-stop sill and the infusion port.

The utility model is based on the ordinary burette type infusion set, and a gear-shaped plastic (or other materials) floating body is placed in the lower dripping funnel, and there is a flexible medical silicone seal at the sealing part between the floating body and the liquid outlet. During the infusion, the liquid flows into the drip funnel from the gap of the gear-shaped floating body, and the floating body rises under the action of the buoyancy of the liquid, and automatically opens the liquid outlet to realize the infusion process; When the liquid outlet contacts, under the atmospheric pressure and the weight pressure of the float valve, the sealing film will tightly block the liquid outlet, so that the air will not enter the infusion catheter under the liquid outlet, thereby preventing air from entering the human body and blood backflow in the body, realizing Safe infusion.

The utility model has the advantages of simple structure, safety and reliability. During infusion, the liquid medicine is precisely filtered to prevent air from entering the human body and blood backflow in the body, realize safe infusion, and further reduce and avoid medical accidents.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a structural schematic diagram of another embodiment of the present invention.

Fig. 3 is a structural schematic diagram of the float valve.

Figure 4 is a bottom view of the floating body.

In the figure: 1 sheath, 2 bottle stopper piercer, 3 air filter, 4 short catheter, 5 liquid stop clip, 6 sling, 7 heparin cap, 8 air filter, 9 drip tube cap, 10 drip tube, 11 drops Cylinder seat, 12 microdrop tube, 13 upper dripping funnel, 14 lower dripping funnel, 15 float valve, 16 flow regulator, 17 trident, 18 precision liquid medicine filter, 19 two-way connector, 20 venous needle, 2a air inlet , 9a exhaust hole, 9b dosing hole, 13a only lift sill, 14a infusion port, 15a floating body, 15b seal, 15a1 notch, 15a2 ventilation groove, 15b1 sealing film.

Detailed ways

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

As shown in Figure 1-4, the burette type precision filter safety infusion set includes a sheath 1, a cork piercer 2, an air filter 3, a catheter 4, a liquid stop clip 5, a sling 6, a heparin cap 7, and a dropper cap and Venous needle 20, integrally injection-molded air inlet 2a on the cork puncturer 2 and sealed by air filter 3, the bottom of the cork puncturer 2 is connected to one end of a short conduit, and the other end of the short conduit passes through the stopper clip 5 and the drip tube The cover 9 is connected, and the drip tube cover 9 is integrally injection-molded with the vent hole 9a and the dosing hole 9b, which are respectively sealed by the air filter 8 and the heparin cap 7, and then put on the drip tube 10, and the drip tube seat 11 is installed at the bottom of the drip tube 10. The drip tube seat 11 is equipped with a micro-drop tube 12 at the liquid outlet and is set on the upper dripping funnel 13, and the lower dripping funnel 14 equipped with a float valve 15 is set on the bottom of the upper dripping funnel 13, and the bottom of the lower dripping funnel 14 is connected to one end of the long conduit. The other end of the long conduit passes through the flow regulator 16 and connects to the three-prong 17, and the other end of the three-prong 17 connects the precision liquid filter 18 and the two-way connector 19 through the short conduit, and the venous needle 20 is set on the two-way connector 19 to form a burette as a whole It is characterized in that: the floating valve 15 includes a floating body 15a and a sealing member 15b, the outer peripheral surface of the floating body is gear-shaped, the top is a spherical buffer convex surface, the bottom is a notch 15a1, and the sealing member 15b is One port is provided with a silicone ring cap with a sealing film 15b1 embedded in the notch 15a1 of the floating body, facing the convex infusion port 14a on the inner bottom of the drip funnel. The outer diameter of the floating body 15b is slightly smaller than the inner diameter of the lower drip funnel 14.

As shown in Figures 3 and 4, there is a ventilation groove 15a2 at the joint between the inner wall of the notch 15a1 of the floating body and the seal 15b, and the size of the ventilation groove 15a2 ensures that the liquid medicine cannot enter the cavity of the float valve 15 under normal infusion conditions.

As shown in FIG. 1 , a rise-stop sill 13 a is provided in the upper dripping funnel 13 , and the float valve 15 moves between the lift-stop 13 a and the convex infusion port 14 a.

As shown in FIG. 2 , it is another embodiment of FIG. 1 .

As shown in Figures 1 and 2, the capacity of the buret includes 50ml, 100ml, and 150ml.

At the beginning of the infusion operation, the medicinal liquid first drops on the top spherical buffer convex surface of the float valve 15 and is dispersed and drained into the bottom surface of the lower dripping funnel 14 through the groove of the gear-shaped outer peripheral surface. , the float valve 15 rises under the buoyancy of the liquid, and the sealing film 15b1 leaves the bonding surface to automatically open the infusion port 14a; When in contact, under the atmospheric pressure and the weight pressure of the float valve 15, the sealing film 15b1 tightly seals the infusion port 14a, so that air does not enter the infusion pipeline under the infusion port 14a, thereby preventing air from entering the patient's vein and blood backflow in the body .

Claims (4)

1. Burette type precision filter safety infusion set, including sheath (1), bottle stopper piercer (2), air filter (3), catheter (4), liquid stop clip (5), sling (6), heparin Cap (7), dropper cover (9), dripper (10), dripper seat (11), microdropper (12), upper dripper (13), lower dripper (14), float valve (15 ), flow regulator (16), trident (17), precision liquid medicine filter (18), two-way connector (19) and venous needle (20), and integral injection molding air inlet on the bottle stopper piercer (2) (2a), the air filter (3) is installed in the air inlet (2a), the bottom of the cork piercer (2) is connected to one end of the short conduit, and the other end of the short conduit passes through the liquid stop clip (5) and the dropper cap ( 9) The liquid inlet is connected, the drip tube cover (9) is integrally injection-molded with the liquid inlet, the vent hole (9a) and the dosing hole (9b), the air filter (8) is installed in the vent hole (9a), and the The heparin cap (7) is installed in the medicine hole (9b), the drip tube cover (9) is set on the drip tube (10), and the drip tube seat (11) is installed at the bottom of the drip tube (10), and the drip tube seat (11) discharges the liquid Install the micro-drop tube (12) at the mouth and set it on the upper dripping funnel (13), the lower dripping funnel (14) with the float valve (15) is set on the bottom of the upper dripping funnel (13), and the lower dripping funnel (14) The bottom is connected to one end of the long conduit, the other end of the long conduit passes through the flow regulator (16) and connects to the three-fork (17), and the other end of the three-fork (17) is connected to the precision liquid filter (18) and the two-way joint (19) through a short conduit ), the venous needle (20) is installed on the two-way joint (19), and constitutes a burette type precision filter safety infusion set as a whole; its feature is: the float valve (15) includes a float (15a) and a seal (15b), the float The outer peripheral surface is gear-shaped, the top is a spherical buffer convex surface, the bottom is a notch (15a1), and the seal (15b) is a silicone ring cap with a sealing film (15b1) at one port embedded in the notch (15a1) of the floating body The convex infusion port (14a) facing the inner bottom surface of the dropping funnel. 2. The buret type precision filter safety infusion set according to claim 1, characterized in that: the outer diameter of the floating body (15a) is slightly smaller than the inner diameter of the lower drip funnel (14). 3. The buret type precision filter safety infusion set according to claim 1, characterized in that: there is a ventilation groove (15a2) at the joint between the inner wall of the notch (15a1) of the floating body and the seal (15b), and the size of the ventilation groove (15a2) is Ensure that the medicinal solution cannot enter the cavity of the float valve (15) under normal infusion status. 4. The burette type precision filter safety infusion set according to claim 1, characterized in that: a stop riser (13a) is set in the upper dripping funnel (13), and the float valve (15) moves between the stop riser (13a) and Between the convex infusion ports (14a).