CN211512904U

CN211512904U - Transfusion system with bubble eliminating function

Info

Publication number: CN211512904U
Application number: CN201921015552.4U
Authority: CN
Inventors: 颜广芹; 聂爱青; 刘芹
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-09-18
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a transfusion device with bubble eliminating function, which comprises a sealing cover, a dropping funnel, a transfusion tube, a bubble eliminating tube and an anti-return mechanism, wherein the top of the dropping funnel is connected with the sealing cover in a clamping way, the outer side of the liquid inlet end of the sealing cover is connected with a fixed end, the outer side of the liquid outlet end of the sealing cover is sleeved with a fixed ring, the lower part of the fixed ring is connected with the bubble eliminating tube through a connecting rod, the top of the transfusion tube extends to the inside of the dropping funnel, the anti-return mechanism is connected to the inside of the transfusion tube in a sliding way, and the top end of the anti-return mechanism; the backflow prevention mechanism comprises a floating plug, a connecting pipe and a sliding disc. The utility model discloses an adopt sealed lid, drip chamber, transfer line, defoaming pipe and anti-return mechanism, can effectively avoid producing the impact between liquid medicine drippage and the liquid level, reduce the formation of bubble, can effectively eliminate the bubble in the liquid medicine, can effectively end liquid automatically, avoid liquid medicine to flow the phenomenon that the internal gas pressure change of back drip chamber caused human blood to flow backward.

Description

Transfusion system with bubble eliminating function

Technical Field

The invention relates to the field of medical instruments, in particular to an infusion apparatus with an air bubble eliminating function.

Background

With the continuous development of society and the continuous progress of medical industry, intravenous infusion has become the most common treatment means in daily treatment, and during intravenous infusion, medicines need to be infused into a human body through an infusion apparatus, so the infusion apparatus becomes the most important tool for intravenous infusion.

In application publication No. CN 102485287 a, a bubble-proof infusion set is disclosed, comprising a dropping funnel and a bubble-proof tube, the bubble-proof infusion set further comprising: the exhaust device is arranged on the dropping funnel, and an inlet in the dropping funnel of the exhaust device is positioned above the anti-bubble tube and is spaced from the anti-bubble tube; the air exhaust device is additionally arranged on the dropping funnel, so that the air exhaust speed is accelerated, the liquid flowing into the dropping funnel is stable, no air bubble and air-liquid mixture is formed, the air bubble prevention effect is achieved, and the infusion efficiency and safety are improved. However, it has the following disadvantages: only can't effectively eliminate the bubble that the liquid medicine produced at the injection in-process through traditional exhaust apparatus, the impact that produces also can produce the bubble after the liquid medicine that drops contacts with the liquid level moreover, the bubble that produces under the device can't effectively eliminate these states still can lead to the bubble to get into the human body along with the liquid medicine, has certain potential safety hazard.

If the patent with application publication number CN 102512723B discloses a self-exhaust anti-bubble infusion apparatus, which comprises a bottle stopper puncture outfit, an infusion pipeline, a dropping funnel, a flow regulator, a liquid medicine filter, a water stop clamp, a conical joint and an intravenous infusion needle, wherein an exhaust device is arranged in the dropping funnel, the exhaust device comprises an exhaust seat, an exhaust core and a cap, the bottom of the exhaust seat is fixed at a dropping opening at the bottom end of the dropping funnel and is tightly matched with the dropping opening, a hollow exhaust core communicated with the dropping opening is arranged in the exhaust seat, a liquid inlet gap is arranged between the exhaust core and the exhaust seat, liquid inlet grooves are arranged on the side walls of the exhaust core and the exhaust seat, the top of the exhaust seat is provided with the cap, the cap is clamped with the exhaust seat, and at least one exhaust groove is arranged on the side wall of the cap; the exhaust device in the dropping funnel of the infusion apparatus can exhaust gas in a gas-liquid mixture entering the dropping funnel, so that bubbles are prevented from being generated, the cap exhaust groove can avoid gas retention, and the infusion apparatus is safe, convenient, rapid and reliable to use. However, it has the following disadvantages: the device still has the phenomenon that liquid medicine produces the impact with the liquid level when dripping and forms the bubble, and the device can't stop the liquid automatically after the liquid medicine finishes flowing moreover, easily makes the interior atmospheric pressure of dropping funnel change after the liquid medicine finishes flowing, causes the phenomenon of blood return.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide an infusion apparatus with an air bubble eliminating function, which can effectively avoid impact between liquid medicine dripping and a liquid level, reduce the generation of air bubbles, effectively eliminate the air bubbles in the liquid medicine, effectively stop the liquid automatically and avoid the phenomenon that human blood reflows due to the change of air pressure in a dropping funnel after the liquid medicine flows out.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

a transfusion device with a defoaming function comprises a sealing cover, a drip chamber, a transfusion tube, a defoaming tube and an anti-backflow mechanism, wherein the top of the drip chamber is connected with the sealing cover, the sealing cover is arranged in a structure like a Chinese character ' jin ' in ', the outer side of the liquid inlet end of the sealing cover is connected with a fixed end, one end of the top of the sealing cover below the fixed end is connected with an air outlet tube, the top of the air outlet tube is fixed with an air outlet cover, the outer side of the liquid outlet end of the sealing cover is sleeved with a fixed ring, the lower part of the fixed ring is connected with the defoaming tube through a connecting rod, the defoaming tube is arranged in a funnel-shaped structure, capillary holes are evenly formed in the side wall of the tubular end of the defoaming tube, the center of the bottom of the drip chamber is connected with a liquid outlet tube, the inner part of the liquid outlet tube is connected with the, the top end of the backflow prevention mechanism extends into the dropping funnel above the infusion tube;

the anti-backflow mechanism comprises a floating plug, a connecting pipe and a sliding disc, the sliding disc is connected to the inside of the sliding groove in a sliding mode, the top of the sliding disc is connected with the connecting pipe, a liquid inlet hole is evenly formed in the side wall of the connecting pipe, the top of the connecting pipe extends to the top of the infusion pipe, the floating plug is fixed to the spiral mode, the floating plug is of a hemispherical structure, the bottom of the floating plug is connected with a sealing pad, the center of the floating plug is provided with a through hole, and the bottom of the defoaming pipe extends to the inside of the through hole of the floating plug.

Specifically, the bottom of the edge position of the sealing cover is provided with an annular fixing groove matched with the dropping funnel, and the width of the fixing groove is equal to the thickness of the side wall of the dropping funnel.

Specifically, all evenly be equipped with sealed snap ring on the interior lateral wall at drip chamber top and the lateral wall of the sealed lid of stiff end top, and be equipped with the ring channel of mutually supporting with sealed snap ring in the fixed slot of sealed lid.

Specifically, the distance between the liquid outlet end of the sealing cover and the top of the defoaming pipe is 0.3-0.6 mm, and the aperture of the center of the sealing cover is 2 times of the inner diameter of the tubular end of the defoaming pipe.

Specifically, the aperture of the floating plug through hole is equal to the outer diameter of the tubular end of the defoaming tube and the inner diameter of the connecting tube, and the outer diameter of the connecting tube is equal to the inner diameter of the infusion tube.

Specifically, the center of the air outlet cover is fixed with a water-blocking and water-permeable membrane, and the center of the sliding disc is fixed with an air-blocking and water-permeable membrane.

Specifically, the top of connecting pipe is equipped with the external screw thread, and floats the outside of stopper bottom center through-hole and be equipped with the internal thread hole of mutually supporting with the external screw thread.

Specifically, the distance between every two adjacent capillary holes is equal to half of the distance between every two adjacent liquid inlet holes, and the pore diameter of each capillary hole is 0.8 times of that of each liquid inlet hole.

3. Advantageous effects

(1) By adopting the sealing cover, the dropping funnel and the defoaming tube, the dropped liquid medicine is effectively directly attached to the side wall of the funnel-shaped end of the defoaming tube and drops along the tubular end of the defoaming tube, so that the liquid medicine is prevented from impacting and contacting with the liquid level to generate bubbles in the dropping process, and the generation of the bubbles is reduced.

(2) According to the invention, by adopting the anti-backflow mechanism, after the liquid medicine is injected, the floating plug floats on the surface of the liquid medicine under the action of self buoyancy, so that the floating plug pulls the connecting pipe and the sliding disc to rise in the sliding groove, namely the connecting pipe is pulled to slide between the infusion pipe and the defoaming pipe, the connecting pipe and the liquid inlet hole are positioned in the liquid medicine in the dropping funnel, the liquid inlet hole is conveniently blocked by the liquid medicine which continuously flows through the tubular end of the defoaming pipe, the height of the liquid medicine in the dropping funnel is kept, the internal pressure of the dropping funnel is maintained, the generation of bubbles is further reduced, and the use of the device is effectively maintained.

(3) According to the invention, the capillary holes are uniformly arranged at the tubular end of the defoaming pipe, and the liquid inlet hole is formed in the connecting pipe, so that the surface tension of bubbles in the liquid medicine is destroyed through the capillary holes when the liquid medicine in the defoaming pipe flows, and the gas enters the liquid inlet hole through the capillary holes and slowly enters the dropping funnel to be accumulated, and the bubbles float to the liquid level in the dropping funnel and are crushed after reaching a floating state, so that the bubbles are effectively eliminated, the bubbles are prevented from entering the liquid conveying pipe of the connecting pipe, and the damage of the bubbles to a human body is reduced.

(4) According to the invention, the floating plug and the sealing gasket are adopted, so that after the traditional Chinese medicine in the defoaming tube flows completely, the residual liquid medicine in the dropping funnel enters the connecting tube through the liquid inlet hole under the action of air pressure, the medicine is continuously administered, meanwhile, the residual bubbles in the residual liquid medicine can be effectively isolated by the air-blocking and water-permeable membrane on the sliding disc, the bubbles are further prevented from entering the liquid conveying tube, the floating plug and the connecting tube gradually descend along with the continuous descending of the liquid level until the connecting tube completely enters the liquid conveying tube, the liquid conveying tube is sealed by the sealing gasket at the bottom of the floating plug, the liquid medicine is effectively sealed at the sliding disc, the gas after the liquid medicine is conveyed is prevented from entering a human body, the vascular blood backflow phenomenon caused by the change of air pressure is avoided.

In summary, the infusion apparatus with the bubble eliminating function provided by the invention can effectively avoid impact between liquid medicine dripping and liquid level, reduce generation of bubbles, effectively eliminate bubbles in the liquid medicine, effectively stop liquid automatically, avoid the phenomenon that human blood reflows due to pressure change in a dropping funnel after the liquid medicine flows, and meanwhile, the device has the advantages of simple structure, convenience in fixing and dismounting of all parts, good sealing property, good safety, good practicability and suitability for popularization.

Drawings

FIG. 1 is a schematic sectional structure view of the infusion apparatus of the present invention;

FIG. 2 is a schematic cross-sectional view of the infusion set of the present invention in use;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1 according to the present invention;

fig. 4 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.

Reference numerals: 1. a sealing cover; 2. an air outlet pipe; 3. a dropping funnel; 4. a floating plug; 5. a liquid outlet pipe; 6. a transfusion tube; 7. a fixed end; 8. an air outlet cover; 9. a defoaming pipe; 10. a connecting pipe; 11. a sliding disk; 12. a chute; 13. a fixing ring; 14. a connecting rod; 15. capillary pores; 16. a gasket; 17. and a liquid inlet hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an embodiment of the present invention is shown: an infusion apparatus with bubble eliminating function comprises a sealing cover 1, a dropping funnel 3, an infusion tube 6, a bubble eliminating tube 9 and a backflow preventing mechanism, wherein the top of the dropping funnel 3 is connected with the sealing cover 1 in a clamping manner, the sealing cover 1 is designed into a structure like a Chinese character 'ji', the bottom of the edge position of the sealing cover 1 is provided with an annular fixing groove which is matched with the dropping funnel 3, the width of the fixing groove is equal to the thickness of the side wall of the dropping funnel 3, the sealing cover 1 and the dropping funnel 3 are convenient to fixedly disassemble and assemble, the parts in the dropping funnel 3 are convenient to disassemble and assemble and fix, the outer side of the liquid inlet end of the sealing cover 1 is connected with a fixing end 7, sealing snap rings are uniformly arranged on the inner and outer side walls of the top of the dropping funnel 3 and the outer side wall of the sealing cover 1 above the fixing end 7, annular grooves which are matched with the sealing snap rings are arranged in the fixing groove of the, the inner liquid medicine is prevented from leaking when the dropping funnel 3 inclines, meanwhile, the sealing cover 1 is convenient to be connected, fixed and sealed with the puncture body above, the device is convenient to use, one end of the top of the sealing cover 1 below the fixed end 7 is connected with the air outlet pipe 2, the top of the air outlet pipe 2 is fixed with the air outlet cover 8, the outer side of the liquid outlet end of the sealing cover 1 is sleeved with the fixing ring 13, the lower part of the fixing ring 13 is connected with the defoaming pipe 9 through the connecting rod 14, the defoaming pipe 9 is of a funnel-shaped structure, capillary holes 15 are uniformly formed in the side wall of the tubular end of the defoaming pipe 9, the distance between the liquid outlet end of the sealing cover 1 and the top of the defoaming pipe 9 is 0.6mm, the aperture in the center of the sealing cover 1 is 2 times of the inner diameter of the tubular end of the defoaming pipe 9, the liquid medicine convenient to drop is directly attached to the side wall of, the generation of bubbles is effectively reduced, the center of the bottom of the drip chamber 3 is connected with a liquid outlet pipe 5, a liquid conveying pipe 6 is clamped inside the liquid outlet pipe 5, the top of the liquid conveying pipe 6 extends to the inside of the drip chamber 3, a sliding groove 12 is formed in the inner wall of the liquid conveying pipe 6, which is close to one end of the drip chamber 3, the backflow prevention mechanism is connected inside the liquid conveying pipe 6 in a sliding mode, and the top end of the backflow prevention mechanism extends to the inside of the drip chamber 3 above the liquid conveying pipe 6;

the backflow prevention mechanism comprises a floating plug 4, a connecting pipe 10 and a sliding disc 11, the sliding disc 11 is connected inside a sliding chute 12 in a sliding mode, the connecting pipe 10 is connected to the top of the sliding disc 11, a water-blocking breathable film is fixed to the center of the air outlet cover 8, an air-blocking breathable film is fixed to the center of the sliding disc 11, liquid entering the air outlet pipe 2 is conveniently and effectively isolated through the water-blocking breathable film, gas can flow out through the water-blocking breathable film, redundant gas is conveniently discharged, the air pressure of the dropping funnel 3 is maintained, meanwhile residual bubbles in the connecting pipe 10 are conveniently and effectively isolated through the air-blocking breathable film, the bubbles are prevented from entering the interior of the infusion pipe 6, accordingly, the bubbles are prevented from entering human bodies to damage, the use safety of the device is effectively improved, liquid inlet holes 17 are evenly formed in the side wall of the connecting pipe 10, the distance between every two, the aperture of the capillary hole 15 is 0.8 times of the aperture of the liquid inlet hole 17, the top of the connecting pipe 10 extends to the top of the liquid conveying pipe 6 and is spirally fixed with the floating plug 4, the top of the connecting pipe 10 is provided with an external thread, the outer side of the central through hole at the bottom of the floating plug 4 is provided with an internal thread hole matched with the external thread, the floating plug 4 and the connecting pipe 10 are convenient to be fixed, disassembled and assembled and used, the floating plug 4 is in a hemispherical structure, the bottom of the floating plug 4 is connected with the sealing gasket 16, the central of the floating plug 4 is provided with the through hole, the bottom end of the defoaming pipe 9 extends to the inside of the through hole of the floating plug 4, the aperture of the through hole of the floating plug 4 is equal to the outer diameter of the tubular end of the defoaming pipe 9 and the inner diameter of the connecting pipe 10, the outer diameter of the connecting pipe 10 is equal to, be convenient for float plug 4 pulling connecting pipe 10 slides between transfer line 6 and defoaming pipe 9, the injection of the liquid medicine of being convenient for, when effectively making the liquid medicine of drippage simultaneously flow in defoaming pipe 9 is inside, remaining bubble receives destruction through the tension of capillary 15 for during residual gas passes through capillary 15 and gets into feed liquor hole 17, thereby avoid the bubble to get into transfer line 6 inside.

The working principle is as follows: during installation, all the components are assembled in sequence, after the sealing cover 1 is connected with the puncture body, the puncture body is inserted into a liquid medicine bottle, when the puncture device is used, the dropping funnel 3 is firstly extruded, so that liquid medicine in the liquid medicine bottle flows into the inside of the dropping funnel 3 from the liquid outlet end of the sealing cover 1 under the action of negative pressure, at the moment, the liquid medicine quickly enters the defoaming pipe 9 under the action of negative pressure, gas is discharged from a gap between the liquid outlet end of the sealing cover 1 and the defoaming pipe 9, so that part of the liquid medicine flows into the tubular end of the defoaming pipe 9 along the funnel-shaped end wall of the defoaming pipe 9, part of the liquid medicine flows outwards from the funnel-shaped end of the defoaming pipe 9, flows to the top of the floating plug 4 along the outer wall of the defoaming pipe 9, and drops to the bottom of the dropping funnel 3 outside the liquid conveying pipe 6 along the radian of the floating plug 4, extrusion is stopped until the liquid medicine rises to half of the height of the dropping funnel 3, at the moment, residual air pressure is, the dropping liquid medicine is directly attached to the side wall of the funnel-shaped end of the defoaming tube 9 and falls along the tubular end of the defoaming tube 9, so that the liquid medicine is effectively prevented from contacting with the liquid surface to generate bubbles in the dropping process, the generation of the bubbles is effectively reduced, the floating plug 4 floats on the surface of the liquid medicine under the action of self buoyancy, therefore, the floating plug 4 can pull the connecting tube 10 and the sliding disc 11 to rise in the chute 12 when floating, namely, the connecting tube 10 is pulled to slide between the infusion tube 6 and the defoaming tube 9, so that the connecting tube 10 and the liquid inlet hole 17 are positioned in the liquid medicine in the dropping funnel 3, and the continuously dropping liquid medicine effectively blocks the liquid inlet hole 17 when falling along the tubular end of the defoaming tube 9, thereby the height of the liquid medicine in the dropping funnel 3 is maintained, the internal pressure of the dropping funnel 3 is maintained, and meanwhile, when the dropping liquid medicine flows in the defoaming tube 9, the residual bubbles can be effectively damaged through the tension of the, so that the residual gas enters the liquid inlet hole 17 through the capillary hole 15 and slowly enters the interior of the dropping funnel 3 to be accumulated, the residual gas floats to the liquid level in the dropping funnel 3 to be broken after the size of the bubbles reaches a floating state, thereby effectively eliminating the bubbles and avoiding the bubbles from entering the interior of the infusion tube 6, when the liquid medicine in the liquid medicine bottle flows out of the traditional Chinese medicine liquid and the bubble eliminating tube 9 is not filled with the liquid medicine any more, the residual liquid medicine in the dropping funnel 3 enters the connecting tube 10 through the liquid inlet hole 17 under the action of air pressure, the residual bubbles in the residual liquid medicine can be effectively isolated through the air and water permeable membranes on the sliding plate 11, further avoiding the bubbles from entering the infusion tube 6, and the floating plug 4 and the connecting tube 10 gradually descend along with the continuous descending of the liquid level until the connecting tube 10 completely enters the interior of the infusion tube 6, the sealing gasket 16 at the bottom of the, the gas entering the human body after the liquid medicine is conveyed is avoided, the blood vessel blood backflow phenomenon caused by the air pressure change is avoided, and the safety of the device is effectively guaranteed.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides an transfusion system with bubble function disappears, includes sealed lid (1), drip chamber (3), transfer line (6), defoaming pipe (9) and anti-return mechanism, its characterized in that: the top of the drip chamber (3) is connected with a sealing cover (1), the sealing cover (1) is arranged to be of a 'towel' shaped structure, the outer side of the liquid inlet end of the sealing cover (1) is connected with a fixed end (7), one end of the top of the sealing cover (1) below the fixed end (7) is connected with an air outlet pipe (2), the top of the air outlet pipe (2) is fixed with an air outlet cover (8), the outer side of the liquid outlet end of the sealing cover (1) is sleeved with a fixed ring (13), the lower part of the fixed ring (13) is connected with a defoaming pipe (9) through a connecting rod (14), the defoaming pipe (9) is arranged to be of a funnel-shaped structure, capillary holes (15) are uniformly arranged on the side wall of the tubular end of the defoaming pipe (9), the central part of the bottom of the drip chamber (3) is connected with a liquid outlet pipe (5), the inner part of the liquid outlet pipe, a sliding groove (12) is formed in the inner wall of one end, close to the dropping funnel (3), of the infusion tube (6), the backflow prevention mechanism is connected to the inside of the infusion tube (6) in a sliding mode, and the top end of the backflow prevention mechanism extends to the inside of the dropping funnel (3) above the infusion tube (6);

anti-return mechanism is including floating plug (4), connecting pipe (10) and sliding tray (11), and sliding tray (11) sliding connection in the inside of spout (12), the top of sliding tray (11) is connected with connecting pipe (10), evenly is equipped with feed liquor hole (17) on the lateral wall of connecting pipe (10), and the top of connecting pipe (10) extends to the top at transfer line (6) top and the spiral is fixed with floating plug (4), floating plug (4) are established to the hemisphere structure, and the bottom of floating plug (4) is connected with sealed pad (16), and the central authorities of floating plug (4) are equipped with the through-hole, the bottom of defoaming pipe (9) extends to inside the through-hole of floating plug (4).

2. The infusion set with the function of eliminating air bubbles according to claim 1, wherein the bottom of the edge position of the sealing cover (1) is provided with an annular fixing groove which is matched with the dropping funnel (3), and the width of the fixing groove is equal to the thickness of the side wall of the dropping funnel (3).

3. The infusion apparatus with the function of eliminating bubbles according to claim 2, wherein the inner and outer side walls of the top of the drip chamber (3) and the outer side wall of the sealing cover (1) above the fixed end (7) are uniformly provided with sealing snap rings, and the fixing groove of the sealing cover (1) is provided with an annular groove which is matched with the sealing snap rings.

4. The infusion apparatus with the function of eliminating bubbles according to claim 1, wherein the distance between the liquid outlet end of the sealing cover (1) and the top of the defoaming tube (9) is 0.3-0.6 mm, and the aperture of the center of the sealing cover (1) is 2 times of the inner diameter of the tubular end of the defoaming tube (9).

5. The infusion set with the function of eliminating bubbles according to claim 1, characterized in that the aperture of the through hole of the floating plug (4) is equal to the outer diameter of the tubular end of the defoaming tube (9) and the inner diameter of the connecting tube (10), and the outer diameter of the connecting tube (10) is equal to the inner diameter of the infusion tube (6).

6. The infusion apparatus with the function of eliminating air bubbles according to claim 1, wherein the air outlet cover (8) is fixed with a water-proof and air-permeable membrane at the center, and the air-proof and water-permeable membrane is fixed at the center of the sliding disk (11).

7. The infusion apparatus with the function of eliminating air bubbles according to claim 1, wherein the top of the connecting pipe (10) is provided with external threads, and the outer side of the central through hole at the bottom of the floating plug (4) is provided with an internal thread hole matched with the external threads.

8. The infusion set with the function of eliminating air bubbles according to claim 1, wherein the distance between every two adjacent capillary holes (15) is equal to half of the distance between every two adjacent liquid inlet holes (17), and the pore diameter of each capillary hole (15) is 0.8 times of that of each liquid inlet hole (17).