ANTI-BUBBLE INFUSION DRIP CHAMBER

Abstract

The present invention discloses an anti-bubble infusion drip chamber. The anti-bubble infusion drip chamber comprises a drip chamber main body; the drip chamber main body has an upper portion and a lower portion, namely a drip chamber portion arranged on the upper portion and a filtering portion arranged on the lower portion; the filtering portion is provided with a liquid storage cavity communicated with an inner cavity of the drip chamber portion, and a liquid medicine filter and an air filter which are arranged on two sides of the liquid storage cavity; a liquid medicine flow channel is arranged on the side wall of the filter and is provided with a liquid inlet and a liquid outlet; the liquid inlet is formed above the liquid outlet; a liquid medicine filter membrane is arranged between the liquid inlet of the flow channel and the liquid storage cavity; and an air filter is arranged on the drip chamber main body on at least one side of the filter membrane. A horizontally-placed liquid medicine filter membrane in the traditional drip chamber can cause unsmooth flow of liquid medicine due to surface tension of the liquid medicine and accumulation of impurities. By making an improvement on the drip chamber, the liquid medicine filter membrane is vertically or obliquely arranged, so that on one hand, the impurities can be prevented from being accumulated on the surface of the filter membrane, and on the other hand, the surface tension of the liquid medicine can be destroyed.

Claims

1. An anti-bubble infusion drip chamber, comprising a drip chamber main body; the drip chamber main body has an upper portion and a lower portion, namely a drip chamber portion arranged on the upper portion and a filtering portion arranged on the lower portion; the filtering portion is provided with a liquid storage cavity communicated with an inner cavity of the drip chamber portion, and a liquid medicine filter and an air filter which are arranged on two sides of the liquid storage cavity; a liquid medicine flow channel is arranged on the side wall of the filter and is provided with a liquid inlet and a liquid outlet; the liquid inlet is formed above the liquid outlet; a liquid medicine filter membrane is arranged between the liquid inlet of the flow channel and the liquid storage cavity; and an air filter is arranged on the drip chamber main body on at least one side of the filter membrane.

2. The anti-bubble infusion drip chamber according to claim 1, wherein a circle of steps is formed on the end surface inside the liquid medicine filter, and the edge of the liquid medical filter membrane is welded with the steps on the end surface of the filter.

3. The anti-bubble infusion drip chamber according to claim 1, wherein a plurality of supporting protrusions is arranged on the side wall of the liquid medicine filter, and the supporting protrusions are in contact with the filter membrane.

4. The anti-bubble infusion drip chamber according to claim 1, wherein the drip chamber portion and the filtering portion are sleeved vertically, and sealed and fixed by means of welding, bonding or hot melting.

5. The anti-bubble infusion drip chamber according to claim 1, wherein the flow channel is a vertical or inclined flow channel.

6. The anti-bubble infusion drip chamber according to claim 1, wherein the air filter is also provided with a sealing cover matched therewith.

7. The anti-bubble infusion drip chamber according to claim 1, wherein the air filter is arranged on the upper side of the liquid storage cavity.

8. The anti-bubble infusion drip chamber according to claim 1, wherein the top of the drip chamber main body is directly connected with a puncture needle, and an opening in the top of the drip chamber main body is communicated with the puncture needle.

9. The anti-bubble infusion drip chamber according to claim 8, wherein the drip chamber main body and a needle seat of the puncture needle are connected by means of clamping, welding or bonding.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG. 1 is a schematic structural diagram of one of central axis surfaces of an embodiment;

[0018] FIG. 2 is a schematic structural diagram of one of central axis surfaces of an embodiment;

[0019] FIG. 3 is a schematic structural diagram of one of central axis surfaces of an embodiment; and

[0020] FIG. 4 is a schematic structural diagram of Embodiment 1 in the present invention.

[0021] In drawings, reference symbols represent the following components: 1-drip chamber portion; 2-filtering portion; 3-liquid storage cavity; 4-flow channel; 5-liquid inlet; 6-liquid outlet; 7-liquid medicine filter membrane; 8-supporting protrusion; 9-air filter.

DETAILED DESCRIPTION

[0022] The technical features of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] An anti-bubble infusion drip chamber, as shown in FIG. 1 and FIG. 2, comprises a drip chamber main body; the drip chamber main body has an upper portion and a lower portion, namely a drip chamber portion 1 arranged on the upper portion and a filtering portion 2 arranged on the lower portion; the filtering portion 2 is provided with a liquid storage cavity 3 communicated with an inner cavity of the drip chamber portion 1, and a liquid medicine filter and an air filter 9 which are arranged on two sides of the liquid storage cavity 3; a liquid medicine flow channel 4 is arranged on the side wall of the liquid medicine filter and is provided with a liquid inlet 5 and a liquid outlet 6; the liquid inlet 5 is formed above the liquid outlet 6; a liquid medicine filter membrane 7 is arranged between the liquid inlet 5 of the flow channel 4 and the liquid storage cavity 3; and the air filter 9 is arranged on the drip chamber main body on at least one side of the filter membrane. As shown in FIG. 1, the air filter is respectively arranged on two sides of the filter membrane 7. The air filters arranged on two sides can effectively exhaust air in the liquid storage cavity 3 and the flow channel 4. As shown in FIG. 2, an air filter is also arranged outside the filter membrane 7.

[0024] As shown in FIG. 3 and FIG. 4, an air filter is mounted on the liquid storage cavity 3 on the opposite side of the flow channel 4.

[0025] A circle of steps is formed on the end surface inside the liquid medicine filter, and the edge of the liquid medical filter membrane 7 is welded with the steps on the end surface of the filter.

[0026] A plurality of supporting protrusions 8 is arranged on the side wall of the liquid medicine filter, and the supporting protrusions 8 are in contact with the filter membrane 7. Therefore, the liquid medicine filter membrane 7 is presented from sticking to the side wall of the liquid medicine filter under the pressure of the liquid medicine, resulting in deterioration of the filtering effect and reduction in flow rate of the liquid medicine.

[0027] The drip chamber portion 1 and the filtering portion 2 are sleeved vertically, and sealed and fixed by means of welding, bonding or hot melting.

[0028] The flow channel 4 is a vertical or inclined flow channel 4.

[0029] The air filter 9 is also provided with a sealing cover matched therewith.

[0030] During use, the drip chamber portion 1 is communicated with the liquid medicine. After the liquid medicine enters the drip chamber main body, since the liquid inlet 5 is relatively high, the liquid medicine accumulates in the liquid storage cavity 3 and the liquid level rises until the liquid level of the liquid medicine exceeds the height of the liquid inlet 5. At this time, the liquid medicine enters the flow channel 4 from the liquid inlet 5, and finally flows out of the drip chamber main body at the liquid outlet 6.

[0031] During use, the liquid medicine passing through the liquid medicine filter membrane 7 before reaching the liquid inlet 5 from the liquid storage chamber 3. Different from a horizontally-placed liquid medicine filter membrane in the prior art, the liquid medicine filter membrane 7 of the present invention has a vertical or inclined design. Therefore, the problem that the liquid medicine cannot flow through the liquid medicine filter membrane smoothly due to surface tension of the liquid medicine and accumulation of impurities is avoided in the filtering process.

[0032] In an embodiment with a puncture needle, the top of the drip chamber main body is directly connected with the puncture needle, and an opening in the top of the drip chamber main body is communicated with the puncture needle. In the traditional method, the puncture needle is connected to the drip chamber main body through a tube. Compared with the traditional method, the technical solution of the present invention can avoid entanglement of tubes and reduce connection points to ensure the air tightness.