CN106178197B

CN106178197B - Exhaust device of infusion apparatus

Info

Publication number: CN106178197B
Application number: CN201610772996.7A
Authority: CN
Inventors: 李银华; 杨建鑫
Original assignee: BEIJING FERT TECHNOLOGY CO LTD
Current assignee: BEIJING FERT TECHNOLOGY CO LTD
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2022-07-12
Anticipated expiration: 2036-08-30
Also published as: CN106178197A

Abstract

The invention discloses an exhaust device of an infusion apparatus, which comprises a dropping funnel and an automatic exhaust valve, wherein the automatic exhaust valve is arranged at the bottom in the dropping funnel, a contact surface between the automatic exhaust valve and the bottom surface of the dropping funnel is not provided with a gap, the automatic exhaust valve comprises a base and a plurality of exhaust liquid guide pipes, the plurality of exhaust liquid guide pipes are uniformly distributed on the base of the automatic exhaust valve, the plurality of exhaust liquid guide pipes and liquid outlets at the upper end of the dropping funnel are not on the same axis, each exhaust liquid guide pipe in the plurality of exhaust liquid guide pipes is provided with 1 or 2 or 3 exhaust liquid guide grooves, the base of the automatic exhaust valve is provided with a hollow part, the lower part of the base of the automatic exhaust valve is communicated with the liquid outlet at the bottom of the dropping funnel, and the center of the upper part of the hollow part of the base of the automatic exhaust valve is provided with a high platform.

Description

Exhaust device of infusion apparatus

Technical Field

The invention belongs to the field of disposable medical instruments, and particularly relates to an exhaust device of an infusion apparatus.

Background

The infusion apparatus used clinically at present mainly comprises a bottle stopper puncture outfit, a dropping funnel, a hose, a flow regulator and a joint, when the medicine liquid is filled, the dropping funnel needs to be inverted and extruded to enable the liquid to rise from bottom to top, and when the liquid reaches a certain height, the dropping funnel is arranged in the right direction, so that the air in the dropping funnel can be discharged. Improper operation, liquid and gas mixture get into the hose in the drip chamber, can form the bubble, cause the potential safety hazard, if control is improper, can cause liquid level too high or low excessively in the drip chamber, the too high observation that is unfavorable for the infusion drop number of drip chamber liquid level, the drip chamber liquid level is low excessively, probably causes liquid, gas mixture, gets into the hose, causes the potential safety hazard.

The application number is 200910093070.5's patent discloses transfusion system self-bleeding device, by transfusion system self-bleeding valve, the drip chamber is constituteed, and characterized in that transfusion system self-bleeding valve adopts macromolecular material polyethylene or polypropylene or other medical macromolecular material to make, is equipped with exhaust, catheter on the transfusion system self-bleeding valve base, exhaust, catheter equipartition are on transfusion system self-bleeding valve's base, and exhaust, catheter and drip chamber upper end liquid outlet are not on the same axis, and transfusion system self-bleeding valve installs in the drip chamber, and self-bleeding valve does not have the clearance with the drip chamber contact surface. The base of the automatic exhaust valve of the infusion apparatus is provided with fixed exhaust and liquid guide pipes, and each exhaust and liquid guide pipe is provided with 1 or 2 or 3 exhaust liquid guide grooves. In the patent, because the space of the inner part of the base is large, bubbles are easily formed in the inner part of the base when the air is exhausted for the first time, and the hidden trouble that the bubbles enter a human body can be caused. The principle is that liquid flows out from a liquid inlet at the upper part of a dropping funnel of the infusion apparatus, flows through an automatic exhaust valve, enters the inner part of a base through exhaust, exhaust on a liquid guide pipe and a liquid guide groove, and finally flows into a human body through a liquid outlet at the lower end of the dropping funnel.

Disclosure of Invention

The invention aims at the defects of the existing problems, and discloses an exhaust device of an infusion apparatus, which comprises a dropping funnel and an automatic exhaust valve, wherein the automatic exhaust valve is arranged at the bottom in the dropping funnel, no gap exists between the automatic exhaust valve and the contact surface of the bottom surface of the dropping funnel, the automatic exhaust valve comprises a base and a plurality of exhaust liquid guide pipes, the plurality of exhaust liquid guide pipes are uniformly distributed on the base of the automatic exhaust valve, the plurality of exhaust liquid guide pipes and liquid outlets at the upper end of the dropping funnel are not on the same axis, each exhaust liquid guide pipe in the plurality of exhaust liquid guide pipes is provided with 1 or 2 or 3 exhaust liquid guide grooves, the base of the automatic exhaust valve is provided with a hollow part, the lower part of the base of the automatic exhaust valve is communicated with the liquid outlets at the bottom of the dropping funnel, and the center of the upper part of the base of the automatic exhaust valve is provided with a high platform.

In one embodiment of the exhaust device of the infusion apparatus, the central plateau at the upper part of the hollow part is an arc-shaped boss.

In the embodiment of the exhaust device of the infusion apparatus, a gap of 0.1-1.2mm is formed between the top of the circular arc boss and the edge of the liquid outlet of the dropping funnel.

In the embodiment of the air exhaust device of the infusion apparatus, a plurality of air exhaust liquid guide pipes are uniformly distributed on the base of the automatic air exhaust valve along the circumference.

In the embodiment of the exhaust device of the infusion apparatus, the automatic exhaust valve is made of medical high polymer materials.

In the embodiment of the exhaust device of the infusion apparatus, the medical high polymer material comprises ABS, AS, PC, MABS, PE or PP.

Advantageous effects

Compared with the prior art, the exhaust device of the infusion apparatus provided by the invention has the advantages that air possibly entering a human body in the dropping funnel is exhausted to the greatest extent, and the infusion safety is improved.

Drawings

FIG. 1 is a schematic structural diagram of an exhaust device of an infusion apparatus disclosed by the invention;

FIG. 2 is a schematic structural diagram of an embodiment of an automatic exhaust valve of an exhaust device of an infusion set disclosed by the invention;

fig. 3 is a sectional view of the automatic exhaust valve of the exhaust device of the infusion set disclosed by the invention as shown in fig. 2.

Detailed Description

For a further understanding of the contents, features and effects of the present invention, reference will now be made to the following examples, which are illustrated in the accompanying drawings and described in the following detailed description:

FIG. 1 is a schematic structural diagram of an exhaust device of an infusion apparatus, FIG. 2 is a schematic structural diagram of an embodiment of an automatic exhaust valve of an exhaust device of an infusion apparatus, FIG. 2 is a sectional diagram of the automatic exhaust valve of the exhaust device of the infusion apparatus, shown in FIG. 2, shown in FIGS. 1 to 3, the invention discloses an exhaust device of an infusion apparatus, which comprises a dropping funnel (01) and an automatic exhaust valve (02), wherein the automatic exhaust valve (02) is installed at the inner bottom of the dropping funnel (01), no gap exists between the automatic exhaust valve (02) and the bottom surface of the dropping funnel (01), the automatic exhaust valve (02) comprises a base (03) and a plurality of exhaust liquid guide tubes (04), the plurality of exhaust liquid guide tubes (04) are uniformly distributed on the base (03) of the automatic exhaust valve (02), the plurality of exhaust liquid guide tubes (04) are not on the same axis with a liquid outlet (05) at the upper end of the dropping funnel (02), each exhaust liquid guide pipe in the plurality of exhaust liquid guide pipes (04) is provided with 1 or 2 or 3 exhaust liquid guide grooves (07), and a base (03) of the automatic exhaust valve (02) is provided with a hollow part (08) and the lower part of the hollow part is communicated with a liquid outlet (06) at the bottom of the dropping funnel (01).

In the embodiment of the exhaust device of the infusion set, the center of the upper part of a hollow part (08) of an automatic exhaust valve base (03) is provided with a high platform (09), wherein in one embodiment, the center high platform (09) of the upper part of the hollow part (08) is an arc-shaped boss, and the top of the arc-shaped boss and the edge of a dropping funnel liquid outlet (06) form a gap of 0.1-1.2 mm. According to the fluid mechanics liquid surface tension principle, the liquid can extrude and exhaust the gas at the position after coming out of the exhaust liquid guide groove (07), and then the hollow part (08) of the automatic exhaust valve base (03) under the boss is filled with the liquid, and finally the liquid flows to a liquid outlet (06) of a dropping funnel of an infusion apparatus when the pressure reaches a certain degree.

In the embodiment of the exhaust device of the infusion set, a plurality of exhaust liquid guide pipes (04) are uniformly distributed on a base (03) of an automatic exhaust valve (02) along the circumference. Namely, more than two exhaust liquid guide pipes (04) are preferably arranged and uniformly distributed on the automatic exhaust valve (02). In fig. 1 to 3, two exhaust liquid guide pipes are provided, and one exhaust liquid guide pipe is not suitable for use, because one exhaust liquid guide pipe is arranged in the middle of the automatic exhaust valve (02), if the outlet of the exhaust liquid guide groove (07) is directly opposite to the liquid outlet (06) of the dropping funnel, bubbles are easily generated; or if an exhaust liquid guide pipe is arranged at one side of the automatic exhaust valve (02), the cavity of the hollow part (08) of the automatic exhaust valve base (03) under the boss can not exhaust air and still generates bubbles according to the flowing rule of liquid.

In the embodiment of the exhaust device of the infusion apparatus, the automatic exhaust valve (02) is made of medical high polymer materials.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention may be made without departing from the spirit or scope of the invention.

Claims

1. The utility model provides an infusion set exhaust apparatus, includes drip chamber and automatic vent valve, its characterized in that: the automatic exhaust valve is arranged at the bottom in the dropping funnel, no gap exists between the automatic exhaust valve and the contact surface of the bottom surface of the dropping funnel, the automatic exhaust valve comprises a base and a plurality of exhaust liquid guide pipes, the exhaust liquid guide pipes are uniformly distributed on the base of the automatic exhaust valve, the exhaust liquid guide pipes and the liquid outlets at the upper end of the dropping funnel are not on the same axis, each exhaust liquid guide pipe in the exhaust liquid guide pipes is provided with 1 or 2 or 3 exhaust liquid guide grooves, the base of the automatic exhaust valve is provided with a hollow part, the lower part of the base of the automatic exhaust valve is communicated with the liquid outlet at the bottom of the dropping funnel, and the center of the upper part of the hollow part of the base of the automatic exhaust valve is provided with a plateau;

wherein, the central plateau at the upper part of the hollow part is an arc-shaped boss, and a gap of 0.1-1.2mm is formed between the top of the arc-shaped boss and the edge of the liquid outlet of the dropping funnel.

2. The exhaust device of the infusion set according to claim 1, wherein: the plurality of exhaust liquid guide pipes are uniformly distributed on the base of the automatic exhaust valve along the circumference.

3. The exhaust device of the infusion set according to claim 1, wherein: the automatic exhaust valve is made of medical high polymer materials.

4. The exhaust device of the infusion set according to claim 3, wherein: the medical polymer material comprises ABS, AS, PC, MABS, PE or PP.