CN215134753U - Liquid medicine filter capable of stopping liquid, exhausting gas and preventing backflow - Google Patents

Abstract

The utility model discloses a liquid medicine filter of ending liquid exhaust anti-return relates to the filter field, including last casing and lower casing, and the top of going up the casing has seted up the inlet, the leakage fluid dram has been seted up to the bottom of casing down, go up through threaded connection between casing and the lower casing, the gas vent has been seted up in the outside of going up the casing, go up and install the seal chamber between casing and the seal chamber, the inner wall of seal chamber is provided with sealing rubber. The utility model discloses a sealed storehouse, sealing rubber, push rod and slip chamber, the spring has been seted up to slip intracavity portion, can promote sealing rubber and remove in sealed storehouse, makes the internal liquid medicine volume of inferior valve that can enter into in the uniform time keep at the certain limit to reduce the adjustment to liquid medicine speed, guarantee the input that liquid medicine can be stable, reduced the adjustment number of times, improved the availability factor, effectively solved the problem that infusion speed need constantly adjust.

Description

Liquid medicine filter capable of stopping liquid, exhausting gas and preventing backflow

Technical Field

The utility model relates to a filter field specifically is a liquid medicine filter of ending liquid exhaust backflow prevention.

Background

The intravenous infusion is a method for inputting a large amount of sterile liquid, electrolyte and medicine into a human body from veins by utilizing the principles of atmospheric pressure and hydrostatic pressure, a needle head is usually inserted into a blood vessel during infusion, external liquid is input into the veins, air in an infusion tube needs to be treated in the injection process, impurities in the infusion are filtered, and a filter is usually used for treating the liquid medicine.

But current equipment is when handling the liquid medicine, in order to discharge the gas in the liquid medicine, the exhaust hole has usually been seted up in the outside of filter, thereby lead to filter and external switch-on, easily lead to the liquid medicine contaminated, and when the infusion, along with the liquid medicine in the medicine bottle constantly reduces, the inlet pressure to the filter constantly reduces, thereby can lead to the continuous decline of the speed of infusion, lead to the infusion not enough evenly, need the continuous adjustment of patient, influence the availability factor.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a liquid medicine filter of preventing liquid exhaust anti-return to solve the liquid medicine and be easily polluted, the technical problem that infusion speed need constantly adjust.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a liquid medicine filter of ending liquid exhaust anti-return, includes casing and lower casing, and goes up the top of casing and seted up the inlet, the leakage fluid dram has been seted up to the bottom of casing down, go up through threaded connection between casing and the lower casing, the gas vent has been seted up in the outside of going up the casing, go up and install the sealed storehouse between casing and the sealed storehouse, the inner wall of sealed storehouse is provided with sealing rubber, sealing rubber's bottom is connected with the push rod, the slip chamber has been cup jointed in the outside of push rod, the below that the inner wall that goes up the casing is located the slip chamber is connected with the sealing ring, be connected with the baffle between sealing ring and the last casing, and the baffle meets with the bottom of gas vent.

Through adopting above-mentioned technical scheme, can promote sealing rubber rebound through the spring when the inside pressure of transfusion bottle reduces to increase the interval between sealing rubber and the sealed storehouse, thereby increase the throughput of liquid medicine, make the liquid medicine injection volume keep in certain extent.

The utility model discloses further set up to, go up the casing and be provided with the second filter screen down between the casing, the rubber ring has been seted up to the outer wall of second filter screen, the second filter screen passes through rubber ring and last casing, casing block connection down.

Through adopting above-mentioned technical scheme, can seal the junction through the rubber ring between last casing and the lower casing to reduce the leakage of liquid medicine.

The utility model discloses further set up to, the inner wall of seal chamber seted up with sealing rubber assorted inclined plane, first filter screen has been seted up to the outer wall in slip chamber, the slip chamber is connected through first filter screen and seal chamber block, the limit ring has been seted up to the bottom in slip chamber.

Through adopting above-mentioned technical scheme, can fix first filter screen through the limit ring, guarantee that first filter screen can not separate with the sealed storehouse.

The utility model discloses further set up to, the internal connection in sliding chamber has the spring, the tip and the spring fixed connection of push rod, the push rod is at the inside sliding connection in sliding chamber.

Through adopting above-mentioned technical scheme, can promote push rod sealing rubber through the spring and remove in the sealed storehouse.

The utility model discloses further set up to, constitute circuitous chamber between sealing ring and the last casing, and the inside switch-on of the bottom in circuitous chamber and last casing, the bottom in circuitous chamber and the opening switch-on of every group gas vent, the water sealing layer is installed to the inner wall of gas vent.

Through adopting above-mentioned technical scheme, can make the gas in the liquid medicine pile up in circuitous intracavity to the messenger keeps apart liquid medicine and external air.

To sum up, the utility model discloses mainly have following beneficial effect:

the utility model is realized through;

1. the utility model discloses a sealing ring, water seal layer and circuitous chamber, when the liquid medicine was input, the inside gas of liquid medicine can be piling up on the top of last casing to sleeping circuitous chamber and discharging from the gas vent, the gas in the liquid medicine can pile up in circuitous intracavity this moment, makes the liquid medicine not with external air direct contact, has avoided the liquid medicine to receive the infection, and can avoid the liquid medicine to leak from the gas vent through the water seal layer, has effectively solved the easy contaminated problem of liquid medicine.

2. The utility model discloses a sealed storehouse, sealing rubber, push rod and slip chamber, the spring has been seted up to the slip intracavity portion, can promote sealing rubber and remove in sealed storehouse, when the liquid medicine in the transfusion bottle constantly reduces, the liquid medicine is also in continuous reduction to sealing rubber's extrusion, the spring can promote sealing rubber and keep away from the inclined plane, make the interval increase between sealing rubber and the sealed storehouse, the space that makes the liquid medicine can pass is bigger, thereby make the same time can enter into the internal liquid medicine volume of inferior valve and keep in the certain limit, thereby reduce the adjustment to liquid medicine speed, guarantee the input that liquid medicine can be stable, the adjustment number of times has been reduced, the service efficiency is improved, the problem that the infusion speed needs constantly to adjust has effectively been solved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

fig. 3 is a schematic structural view of the sliding chamber of the present invention;

fig. 4 is a schematic structural view of a second filter screen of the present invention;

fig. 5 is a schematic view of the sealing ring structure of the present invention.

In the figure: 1. an upper housing; 2. a lower housing; 3. an exhaust port; 4. sealing the bin; 5. a liquid inlet; 6. a liquid discharge port; 7. a push rod; 8. sealing rubber; 9. a first filter screen; 10. a sliding cavity; 11. sealing a water layer; 12. a circuitous cavity; 13. a seal ring; 14. a second filter screen; 15. an edge ring; 16. a rubber ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The following describes an embodiment of the present invention according to its overall structure.

A liquid medicine filter with liquid stopping, exhausting and backflow preventing functions is disclosed, as shown in figures 1 to 5, firstly, the filter is connected with an external hanging bottle, and comprises an upper shell 1 and a lower shell 2, a liquid inlet 5 is arranged at the top end of the upper shell 1, a liquid outlet 6 is arranged at the bottom end of the lower shell 2, the hanging bottle is connected with the liquid inlet 5, the liquid outlet 6 is connected with a needle tube, the upper shell 1 is connected with the lower shell 2 through a thread, a sealed cabin 4 is arranged between the upper shell 1 and the sealed cabin 4, the inner wall of the sealed cabin 4 is provided with a sealing rubber 8, the inner part of the sealing rubber 8 is of a hollow structure, the bottom end of the sealing rubber 8 is connected with a push rod 7, the outer side of the push rod 7 is sleeved with a sliding cavity 10, the inner wall of the sealed cabin 4 is provided with an inclined plane matched with the sealing rubber 8, so that the sealing rubber 8 can be impacted after liquid in the hanging bottle enters the sealed cabin 4, and the distance between the inclined plane of the sealing rubber 8 and the inner wall of the sealed cabin is changed, thereby change the flow velocity of liquid medicine, first filter screen 9 has been seted up to the outer wall in slip chamber 10, and slip chamber 10 is connected with 4 blocks in sealed storehouse through first filter screen 9, and limit ring 15 has been seted up to the bottom in slip chamber 10, and the internal connection in slip chamber 10 has the spring, the tip and the spring fixed connection of push rod 7, push rod 7 are at the inside sliding connection in slip chamber 10.

Referring to fig. 2 and 5, an exhaust port 3 is formed in the outer side of the upper housing 1, a sealing ring 13 is connected to the inner wall of the upper housing 1 below the sliding cavity 10, a partition is connected between the sealing ring 13 and the upper housing 1 and connected to the bottom end of the exhaust port 3, a detour cavity 12 is formed between the sealing ring 13 and the upper housing 1, the bottom end of the detour cavity 12 is connected to the inside of the upper housing 1, the bottom end of the detour cavity 12 is connected to the opening of each group of exhaust ports 3, and a water sealing layer 11 is installed on the inner wall of the exhaust port 3.

Referring to fig. 2 and 4, a second filter 14 is disposed between the upper housing 1 and the lower housing 2, a rubber ring 16 is disposed on an outer wall of the second filter 14, the second filter 14 is connected with the upper housing 1 and the lower housing 2 by the rubber ring 16, and a joint between the upper housing 1 and the lower housing 2 can be sealed by the rubber ring 16, so as to reduce leakage of liquid medicine.

The utility model discloses a theory of operation does: firstly, a filter and a transfusion bottle are installed, the filter and the transfusion bottle are connected through a liquid inlet 5, the filter is vertically placed through a liquid outlet 6 and a needle tube, liquid medicine in the transfusion bottle enters a sealed cabin 4 under the action of gravity and pushes a sealing rubber 8 to approach to an inclined plane in the sealed cabin 4, the liquid medicine passes through a gap between the sealing rubber 8 and the sealed cabin 4 to enter a first filter screen 9 and passes through the first filter screen to enter a lower shell 2, at the moment, if the liquid medicine contains gas, the gas stays at the top end of the upper shell 1 and passes through a circuitous cavity 12 to be discharged from an exhaust port 3, the gas in the liquid medicine can be accumulated in the circuitous cavity 12, the external gas is prevented from passing through the liquid outlet 6 to enter the upper shell 1 to pollute the liquid medicine, the liquid medicine cannot directly contact with the outside, the use safety of the liquid medicine is improved, the liquid medicine can pass through a second filter screen 14 when entering the lower shell 2, thereby filtering the liquid medicine, ensuring the cleanness of the liquid medicine, the liquid medicine passing through the liquid outlet 6 enters the outside needle head and is input into the body of a patient, in the process of infusion, the amount of the liquid medicine in the hanging bottle can be gradually reduced, the pressure of the liquid medicine on the filter can be continuously reduced, the flow rate of the liquid medicine can be reduced, but the extrusion of the liquid medicine on the sealing rubber 8 can be gradually reduced at the moment, under the push of the spring, the sealing rubber 8 moves upwards, the distance between the sealing rubber 8 and the inner wall of the sealing bin 4 is increased and decreased, the liquid medicine can rapidly pass through the sealing bin 4, the cross-sectional area of the liquid medicine flowing is increased when the flow rate of the liquid medicine is reduced, the amount of the liquid medicine entering the lower shell 2 at the same time is kept in a certain range, the speed adjustment of the liquid medicine is reduced, the stable input of the liquid medicine is ensured, and the adjustment times are reduced, the use efficiency is improved.

Although embodiments of the present invention have been shown and described, it is intended that the present embodiments be illustrative only and not limiting to the invention, and that the particular features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples, and that modifications, substitutions, variations, and the like, which are not inventive in light of the above teachings, may be made to the embodiments by those skilled in the art without departing from the principles and spirit of the present invention, but are to be construed as broadly as the following claims.

Claims (5)

1. The utility model provides a liquid medicine filter of ending liquid exhaust anti-return, includes casing (1) and casing (2) down, and goes up the top of casing (1) and seted up inlet (5), leakage fluid dram (6) have been seted up to the bottom of casing (2) down, go up through threaded connection between casing (1) and the casing (2) down, gas vent (3), its characterized in that have been seted up in the outside of going up casing (1): go up and install sealed storehouse (4) between casing (1) and sealed storehouse (4), the inner wall of sealed storehouse (4) is provided with sealing rubber (8), the bottom of sealing rubber (8) is connected with push rod (7), slip chamber (10) have been cup jointed in the outside of push rod (7), the below that the inner wall that goes up casing (1) is located slip chamber (10) is connected with sealing ring (13), be connected with the baffle between sealing ring (13) and last casing (1), and the bottom of baffle and gas vent (3) meets.

2. The liquid medicine filter of claim 1, wherein: go up casing (1) and be provided with second filter screen (14) down between casing (2), rubber ring (16) have been seted up to the outer wall of second filter screen (14), second filter screen (14) pass through rubber ring (16) and go up casing (1), down casing (2) block connection.

3. The liquid medicine filter of claim 1, wherein: the inner wall of seal chamber (4) seted up with sealing rubber (8) assorted inclined plane, first filter screen (9) have been seted up to the outer wall in slip chamber (10), slip chamber (10) are connected with seal chamber (4) block through first filter screen (9), limit ring (15) have been seted up to the bottom in slip chamber (10).

4. The liquid medicine filter of claim 1, wherein: the spring is connected to the inside of the sliding cavity (10), the end of the push rod (7) is fixedly connected with the spring, and the push rod (7) is connected to the inside of the sliding cavity (10) in a sliding mode.

5. The liquid medicine filter of claim 1, wherein: constitute circuitous chamber (12) between sealing ring (13) and last casing (1), and the inside switch-on of the bottom of circuitous chamber (12) and last casing (1), the bottom of circuitous chamber (12) and the opening switch-on of every group gas vent (3), water sealing layer (11) are installed to the inner wall of gas vent (3).

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