Infusion apparatus structure convenient for exhausting air

Abstract

The infusion apparatus structure comprises a puncture needle, an infusion hose, a drip chamber, an adjusting valve, a filter and a needle head, the puncture needle and the needle head are installed at the two ends of the infusion hose, and the drip chamber, the adjusting valve and the filter are sequentially connected in series through the infusion hose. A liquid inlet connector and a liquid outlet connector which are connected with an infusion hose are arranged at the upper end and the lower end of the filter respectively, the interior of the filter is composed of an inner cavity and an outer cavity, the two cavities are separated through a spherical structure composed of a filtering film and a breathable film, and the outer cavity of the filter is divided into a lower liquid cavity and an exhaust cavity through a separation block. A floating ball is mounted in an inner cavity formed by the filtering membrane and the breathable membrane in the filter, and the infusion hose is in sealed connection with the liquid inlet connector; by arranging the filter of a special structure, bubbles and large solid particles in liquid medicine can be filtered and eliminated, meanwhile, the internal bubbles can be automatically discharged, and potential safety hazards possibly occurring in the infusion process are eliminated.

Description

Technical Field

[0001] This utility model relates to the field of infusion set structure technology, and in particular to an infusion set structure that facilitates air venting. Background Technology

[0002] An infusion set is a medical device used for intravenous infusion. Traditional infusion methods involve suspending the intravenous fluid in a bottle or bag at a high position, relying on gravity to allow the fluid to flow into the vein through the infusion tubing. The flow rate is manually adjusted by clamps on the tubing, with the drip rate as the control. However, with conventional infusion sets, large air bubbles can easily enter the tubing during infusion or fluid changes, potentially causing venous air embolism, which can be life-threatening. Therefore, air bubbles in the tubing need to be expelled through the infusion set's structure. Existing infusion sets generally use a drip chamber and filter to remove air bubbles and filter suspended particles in the medication. However, existing filters struggle to remove larger air bubbles promptly, causing them to remain in the filter or infusion tubing for extended periods, increasing safety risks. To address these issues, this invention provides a solution. Utility Model Content

[0003] The purpose of this invention is to provide an infusion set structure that facilitates air venting.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] An infusion set structure for easy air venting includes a puncture needle, an infusion tubing, a drip chamber, a regulating valve, a filter, and a needle tip. The puncture needle and needle tip are installed at both ends of the infusion tubing. The drip chamber, regulating valve, and filter are connected in series via the infusion tubing. The filter has an inlet connector and an outlet connector at its upper and lower ends, respectively, which are connected to the infusion tubing. The filter's interior consists of two cavities, an inner and an outer cavity, separated by a spherical structure composed of a filter membrane and a breathable membrane. The breathable membrane is located in the upper half of the spherical structure, and the filter membrane is located in the lower half. The connection between the filter membrane and the breathable membrane is connected to the filter housing via a partition block. The partition block divides the outer cavity of the filter into a lower cavity and an air venting cavity. The outer shell of the air venting cavity has an air vent. A float is installed inside the inner cavity of the filter, which consists of the filter membrane and the breathable membrane. The float has an insertion hole in its middle, into which the infusion tubing connected to the inlet connector is inserted, and the infusion tubing and the inlet connector are sealed together.

[0006] Furthermore, the float is equipped with a filter block at the bottom, and the filter block is located below the insertion hole. The filter block can perform preliminary filtration of the medicine liquid and eliminate larger air bubbles mixed in with the medicine liquid.

[0007] Furthermore, the exhaust chamber includes an inner exhaust chamber and an outer exhaust chamber, which are separated by a partition plate. The partition plate is provided with a connecting hole, which is located near the isolation block. The exhaust hole is located on the filter housing near the inlet connector. With the above configuration, dust and other particles in the outside air can be effectively prevented from entering the infusion pipeline.

[0008] Furthermore, the filter block is made of silicon dioxide ceramic material, the filter membrane is made of alumina ceramic material, and the breathable membrane is made of polytetrafluoroethylene breathable membrane. Similarly, other materials can be selected as raw materials according to usage requirements.

[0009] Furthermore, a water-stop clamp is installed near the needle tip of the infusion tubing, which can lock the infusion tubing and stop the infusion.

[0010] In summary, this utility model has the following beneficial effects: by setting a filter with a special structure, this utility model can filter out air bubbles and larger solid particles in the medicine solution, and at the same time automatically discharge the internal air bubbles, eliminating potential safety hazards during the infusion process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the filter structure.

[0013] In the diagram, 1. Puncture needle; 2. Infusion tubing; 3. Drip chamber; 4. Regulating valve; 5. Filter; 6. Stop clamp; 7. Needle; 8. Inlet connector; 9. Outlet connector; 10. Float; 11. Insertion port; 12. Filter block; 13. Filter membrane; 14. Isolation block; 15. Lower fluid chamber; 16. Breathable membrane; 17. Venting chamber; 18. Divider plate; 19. Connecting hole; 20. Venting chamber; 21. Venting port. Detailed Implementation

[0014] The present invention will be further described in detail below with reference to the accompanying drawings. The technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0015] like Figure 1 and Figure 2As shown, an infusion set structure for easy air removal includes a puncture needle 1, an infusion tubing 2, a drip chamber 3, a regulating valve 4, a filter 5, and a needle tip 7. The puncture needle 1 and the needle tip 7 are installed at both ends of the infusion tubing 2. The drip chamber 3, the regulating valve 4, and the filter 5 are connected in series through the infusion tubing 2. The filter 5 has an inlet connector 8 and an outlet connector 9 at its upper and lower ends, respectively, which are connected to the infusion tubing 2. The filter 5 consists of two cavities, an inner and an outer cavity, separated by a spherical structure composed of a filter membrane 13 and a breathable membrane 16, with the breathable membrane 16 located in the upper half of the spherical structure. The filter membrane 13 is located in the lower half of the spherical structure. The filter membrane 13 and the breathable membrane 16 are connected to the outer shell of the filter 5 by a partition block 14. The partition block 14 divides the outer cavity of the filter 5 into a lower liquid chamber 15 and an exhaust chamber. The outer shell of the exhaust chamber is provided with an exhaust hole 21. A float 10 is installed in the inner cavity of the filter 5, which is composed of the filter membrane 13 and the breathable membrane 16. The middle position of the float 10 is provided with an insertion hole 11. The infusion hose 2 connected to the inlet connector 8 is inserted into the insertion hole 11 and sealed to the inlet connector 8.

[0016] Further reference Figure 2 As shown, the bottom of the float 10 is provided with a filter block 12, and the filter block 12 is located below the insertion hole 11. The filter block 12 can perform preliminary filtration of the medicine liquid and eliminate larger air bubbles mixed in the medicine liquid.

[0017] Furthermore, the exhaust chamber includes an inner exhaust chamber 17 and an outer exhaust chamber 20, which are separated by a partition plate 18. The partition plate 18 is provided with a connecting hole 19, which is located near the isolation block 14. The exhaust hole 21 is located on the outer shell of the filter 5 near the inlet connector 8. With the above arrangement, dust and other particles in the outside air can be effectively prevented from entering the infusion pipeline.

[0018] Furthermore, the filter block 12 is made of silicon dioxide ceramic material, the filter membrane 13 is made of alumina ceramic material, and the breathable membrane 16 is made of polytetrafluoroethylene breathable membrane. Similarly, other materials can be selected as raw materials according to usage requirements.

[0019] Furthermore, a water-stopping clip 6 is installed near the needle 7 on the infusion tubing 2. The water-stopping clip 6 can lock the infusion tubing 2 to stop the infusion.

[0020] Working principle: When the medicine enters the filter 5 from the drip chamber 3 along the infusion tubing 2, the medicine will come into contact with the filter block 12 along the insertion hole 11. The filter block 12 filters out large particles in the medicine and eliminates air bubbles. As the amount of medicine in the inner cavity of the filter 5 increases, the float 10 will float up with the medicine. At this time, the air pressure in the inner cavity will be slightly greater than the external pressure. The gas at the top will be discharged from the vent membrane 16 into the exhaust chamber, and then discharged to the outside through the exhaust hole to achieve the balance of internal and external air pressure. At the same time, the medicine in the inner cavity will pass through the filter membrane 13 into the lower liquid chamber 15. The filter membrane 13 filters the medicine again, performing secondary filtration of air bubbles and solids in the medicine. The medicine is then delivered to the needle 7 part for infusion through the infusion tubing 2.

[0021] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. An infusion set structure for easy air removal, comprising a puncture needle (1), an infusion tubing (2), a drip chamber (3), a regulating valve (4), a filter (5), and a needle tip (7), wherein the puncture needle (1) and the needle tip (7) are installed at both ends of the infusion tubing (2), and the drip chamber (3), the regulating valve (4), and the filter (5) are connected in series through the infusion tubing (2), characterized in that: The filter (5) is provided with an inlet connector (8) and an outlet connector (9) at its upper and lower ends, respectively, which are connected to the infusion hose (2). The filter (5) consists of two cavities, an inner and an outer cavity, which are separated by a spherical structure composed of a filter membrane (13) and a breathable membrane (16). The breathable membrane (16) is located in the upper half of the spherical structure, and the filter membrane (13) is located in the lower half of the spherical structure. The connection between the filter membrane (13) and the breathable membrane (16) is separated from the outer shell of the filter (5) by a partition block (14). The isolation block (14) divides the outer cavity of the filter (5) into a lower liquid chamber (15) and an exhaust chamber. The outer shell of the exhaust chamber is provided with an exhaust hole (21). The inner cavity of the filter (5) is composed of a filter membrane (13) and a breathable membrane (16) and a float (10) is installed. The middle position of the float (10) is provided with an insertion hole (11). The infusion hose (2) connected to the liquid inlet connector (8) is inserted into the insertion hole (11) and the infusion hose (2) is sealed to the liquid inlet connector (8).

2. The air-priming infusion set structure according to claim 1, wherein: The float (10) has a filter block (12) at its bottom, and the filter block (12) is located below the socket (11).

3. An air-priming infusion set structure according to claim 2, wherein: The exhaust chamber includes an inner exhaust chamber (17) and an outer exhaust chamber (20). The inner exhaust chamber (17) and the outer exhaust chamber (20) are separated by a partition plate (18). The partition plate (18) is provided with a connecting hole (19). The connecting hole (19) is located near the isolation block (14). The exhaust hole (21) is located on the filter (5) housing near the liquid inlet connector (8).

4. The air-priming infusion set structure according to claim 3, wherein: The filter block (12) is made of silicon dioxide ceramic material, the filter membrane (13) is made of alumina ceramic material, and the breathable membrane (16) is made of polytetrafluoroethylene breathable membrane.

5. An air-priming infusion set structure according to claim 4, wherein: A water-stop clamp (6) is installed on the infusion tubing (2) near the needle (7).

Images