CN112245706B - Infusion joint - Google Patents
Infusion joint Download PDFInfo
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- CN112245706B CN112245706B CN202011220290.2A CN202011220290A CN112245706B CN 112245706 B CN112245706 B CN 112245706B CN 202011220290 A CN202011220290 A CN 202011220290A CN 112245706 B CN112245706 B CN 112245706B
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- liquid outlet
- valve plate
- magnetic ring
- sliding cover
- accommodating cavity
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M2005/1401—Functional features
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention provides an infusion joint, belonging to the field of medical appliance manufacturing; the invention comprises the following steps: the device comprises an accommodating cavity, a sliding cover and an elastic valve plate; the accommodating cavity and the sliding cover form a closed accommodating cavity; in the containing cavity, the end part of the liquid inlet pipe is fixed with an annular magnet, and the end part of the liquid outlet pipe is provided with a magnetic ring; the magnetic ring is attracted with the annular magnet, and the valve plate is positioned between the magnetic ring and the annular magnet; one surface of the valve plate facing the magnetic ring is provided with a plurality of strip-shaped grooves; the sliding cover moves towards the accommodating cavity, so that the magnetic ring and the annular magnet are respectively attached to two sides of the valve plate, and the accommodating cavity is communicated with the liquid outlet pipe only through the strip-shaped groove. In the infusion joint, in the tube sealing operation, the sliding cover is pressed and magnetically attracted with the accommodating cavity, so that the liquid flow can be blocked by the valve plate, high-pressure liquid is formed in the accommodating cavity, and the high-pressure liquid is slowly released to the liquid outlet tube under the slow contraction action of the sealing ring, so that thrombus possibly caused by the backflow of blood is avoided.
Description
Technical Field
The invention relates to the manufacturing technology of medical instruments, in particular to an infusion connector, and belongs to the technical field of manufacturing of intravenous injection instruments.
Background
In clinical medicine, when a patient needs to be transfused for multiple times, an external indwelling catheter is generally used, and the connection modes of the external indwelling catheter and an infusion apparatus are divided into needle connection and needle-free connection.
In the prior art, a medical infusion connector is composed of a connecting base and a connector body fixedly connected with the connecting base, and the connector body is also called a heparin cap. The needle tube of the transfusion device is inserted from the sealing rubber plug at the top of the connector body. When the operation of sealing a tube of drawing out the transfusion system needle tubing at the end of the infusion, thereby the former space that occupies of needle tubing is close to the vacuum and produces the negative pressure in keeping somewhere the pipe, and blood can follow the blood vessel and flow backward and into keeping somewhere in the pipe, and blood that flows backward causes the blood coagulation to block up and keeps somewhere the pipe, can't infuse once more, and serious probably produces the thrombus, causes the injury for the disease.
Therefore, medical staff usually needs to take a tube sealing syringe with a puncture needle tube to wash and seal the tube of the indwelling catheter, the needle tube of the syringe penetrates from the rubber plug of the heparin cap during tube sealing operation, enters the inner cavity of the heparin cap and inevitably occupies the space of the inner cavity of the heparin cap, and when tube sealing is finished, the medical staff needs to withdraw the needle tube of the syringe and inject tube sealing liquid at the same time, and space occupied by the needle tube is supplemented so as to avoid negative pressure formation in the indwelling catheter.
In order to make up for the deficiency, after the flow stopping clip clamps the extension tube, the flow stopping clip needs to slide towards the catheter component to gradually squeeze the extension tube, so that the liquid in the extension tube is squeezed into the inner cavity of the indwelling catheter to expel the blood flowing backwards, but the sliding resistance is high when the flow stopping clip and the extension tube are clamped, the extension tube is pulled to be easily elongated and thinned, the extension tube is pulled for many times during indwelling of the catheter component, the extension tube is seriously pulled to be broken to cause blood overflow, the catheter component is stuck on the body of a patient, the length of the extension tube is limited, if the catheter component is pulled carelessly, the catheter component can be pulled away from the body of the patient, in order to avoid the accident, the medical personnel carefully operate the catheter component, sometimes, the pulling length of the flow stopping clip is insufficient, or the blood in the catheter cannot be completely driven to be clean, therefore, the operation mode invisibly increases the workload and psychological burden of medical staff.
Disclosure of Invention
The invention provides a novel infusion joint which is mainly applied to an indwelling needle.
According to the invention, the elastic containing cavity is arranged, and positive pressure is slowly released at one end of the needle head after the transfusion pipeline is sealed manually and magnetically, so that blood is prevented from flowing back into the transfusion pipeline, and the technical problem that complicated operation is needed in the process of sealing the indwelling needle in the prior art is solved.
The infusion joint of the embodiment of the invention comprises: the device comprises an accommodating cavity, a sliding cover and an elastic valve plate; the accommodating cavity is provided with an opening, and the opening is provided with an elastic and telescopic sealing ring; the sliding cover is connected with the opening through the sealing ring, so that the accommodating cavity and the sliding cover form a closed accommodating cavity;
the containing cavity is provided with a liquid inlet pipe, and the sliding cover is provided with a liquid outlet pipe; the liquid inlet pipe and the liquid outlet pipe are communicated with the cavity;
in the containing cavity, the end part of the liquid inlet pipe is fixed with an annular magnet, and the end part of the liquid outlet pipe is provided with a magnetic ring; the magnetic ring is attracted with the annular magnet, and the valve plate is positioned between the magnetic ring and the annular magnet;
one surface of the valve plate, which faces the magnetic ring, is provided with a plurality of strip-shaped grooves; the sliding cover moves towards the accommodating cavity so that the magnetic ring and the annular magnet are respectively attached to two sides of the valve plate, and the accommodating cavity is communicated with the liquid outlet pipe only through the strip-shaped groove.
In the infusion joint according to another embodiment of the present invention, a section of the liquid outlet pipe located in the containing cavity is a liquid outlet cavity; one end of the liquid outlet cavity is communicated with the liquid outlet pipe, and the other end of the liquid outlet cavity is fixed with the magnetic ring;
a limiting bracket is arranged in the liquid outlet cavity, and a sliding column is arranged on the valve plate; the sliding column is sleeved in the limiting support, so that the valve plate can slide left and right relative to the limiting support through the sliding column.
The infusion joint comprises a sliding column, a valve plate and a valve plate, wherein the sliding column is provided with a first end and a second end, the first end is provided with a limiting ball, and the valve plate is mounted on the sliding column through the limiting ball; the diameter of the limiting ball is smaller than that of the magnetic ring.
The infusion connector according to another embodiment of the present invention, wherein a sealing ball is disposed on the second end; the magnetic ring is attracted with the annular magnet, so that the liquid outlet pipe is sealed by the sealing ball.
The infusion joint of the other embodiment of the invention, wherein the section of the valve plate is a V-shaped structure, and the opening angle of the V-shaped structure is 145-170 degrees; the opening of the V-shaped structure faces the magnetic ring.
The infusion joint of the other embodiment of the invention is characterized in that the sliding cover is provided with an operating handle; the operating handle is of a disc-shaped structure, is positioned outside the containing cavity and is vertically fixed on the liquid outlet pipe; and the operating handle is provided with anti-skid lines.
In the infusion joint according to another embodiment of the present invention, the accommodating chamber has a hollow conical structure, the opening is a larger end, and the liquid inlet pipe is disposed at a smaller end;
the sliding cover is disc-shaped; the diameter of the sliding cover is smaller than that of the opening, so that the sliding cover can slide and be embedded into the opening.
The infusion joint of the other embodiment of the invention is characterized in that the sliding cover is provided with a flow guide hole; the two sides of the diversion hole are respectively communicated with the liquid outlet pipe and the liquid outlet cavity;
the edge of the diversion hole is provided with a sealing ring, and the sealing ring corresponds to the sealing ball.
The infusion joint according to another embodiment of the invention is characterized in that the sealing ring is provided with a plurality of mutually nested corrugated expansion rings.
In another embodiment of the invention, the plurality of strip-shaped grooves are arranged on the valve plate in a central symmetrical structure, and the length of each groove exceeds the width of the magnetic ring.
In the infusion joint provided by the embodiment of the invention, in the tube sealing operation, the sliding cover is pressed and magnetically attracted with the accommodating cavity, so that the liquid flow can be firstly blocked through the valve plate, high-pressure liquid is formed in the accommodating cavity, and the high-pressure liquid is slowly released to the liquid outlet tube through the slow contraction action of the sealing ring, thereby avoiding thrombus possibly caused by blood backflow.
Drawings
FIG. 1 is a side view of a flow-through state of an infusion connector according to an embodiment of the present invention;
FIG. 2 is a side view of an infusion connector at the moment of closing according to an embodiment of the present invention;
FIG. 3 is a side view of the infusion connector in a closed state according to the embodiment of the present invention;
fig. 4 is a schematic structural view of a side of a valve plate facing a magnetic ring in an infusion connector according to an embodiment of the invention.
Detailed Description
The infusion joint of the present invention can be made of the following materials, but is not limited to the following materials, for example: rubber, transparent plastic, PVC, magnet, permanent magnet, PP, silica gel, stainless steel, latex, etc.
FIG. 1 is a side view of a flow-through state of an infusion connector according to an embodiment of the present invention; and is described in detail below in conjunction with fig. 2 through 4.
The embodiment is mainly applied to the remaining needle, wherein the remaining needle is mainly arranged at one end of the remaining needle close to the positive pressure connector. In general, in the infusion joint of the present embodiment, the liquid inlet pipe is used to connect one end of the positive pressure joint of the indwelling needle (the end is generally provided with a heparin cap, a positive pressure valve, etc.); the drain pipe in this embodiment is connected with the steel needle through an extension pipe.
Of course, the embodiment of the invention can be applied to other infusion devices and can play the roles of preventing backflow and slowly releasing fluid under positive pressure.
The embodiment comprises the following steps: the device comprises an accommodating cavity 1, a sliding cover 2 and an elastic valve plate 3; the valve plate 3 is generally a circular silica gel valve plate.
The accommodating cavity 1 is provided with an opening, and the opening is provided with an elastic and telescopic sealing ring 11; the sliding cover 2 is connected with the opening through the sealing ring 11, so that the accommodating cavity 1 and the sliding cover 2 form a closed accommodating cavity.
That is, the receiving chamber is formed by the receiving chamber 1, the sliding cover 2, and the sealing ring 11 having high elasticity.
A liquid inlet pipe 4 is arranged on the accommodating cavity 1, and a liquid outlet pipe 5 is arranged on the sliding cover 2; the liquid inlet pipe 3 and the liquid outlet pipe 5 are both communicated with the cavity; in the actual use process, the cavity plays the roles of caching the liquid medicine and communicating the liquid outlet pipe and the liquid inlet pipe.
In the containing cavity, an annular magnet 10 is fixed at the end part of the liquid inlet pipe 4, and a magnetic ring 20 is installed at the end part of the liquid outlet pipe 5; the magnetic ring 20 is attracted with the annular magnet 10, and the valve plate 3 is positioned between the magnetic ring 20 and the annular magnet 10; the magnetic ring 20 and the ring magnet 10 are both generally permanent magnets, typically neodymium iron boron magnets, and are covered with a corrosion resistant outer shell.
As shown in fig. 4, a plurality of strip-shaped grooves 32 are formed on one surface of the valve plate 3 facing the magnetic ring 20; the sliding cover 2 moves towards the accommodating cavity 1, so that the magnetic ring 20 and the annular magnet 10 are respectively attached to two sides of the valve plate 3, and the accommodating cavity is communicated with the liquid outlet pipe 5 only through the strip-shaped groove 32.
The specific using process is shown in fig. 1 to 3; firstly, in a normal use state, the sliding cover is far away from the accommodating cavity due to the blocking and inertia of the sealing ring; meanwhile, the original distance magnetic force between the magnetic ring 20 and the annular magnet 10 is difficult to overcome the supporting force of the sealing ring 11, so that the sliding cover cannot be close to the accommodating cavity as long as the sliding cover is not influenced by external force, and the accommodating cavity is filled with liquid medicine; the liquid medicine enters the containing cavity through the liquid inlet pipe 4, and the valve plate 3 moves freely without blocking the liquid inlet pipe 4 because the magnetic ring and the annular magnet are not mutually attracted; the cavity is also freely communicated with the liquid outlet pipe 5.
As shown in fig. 2, the slide cover 2 is forcibly inserted into the accommodating cavity 1 by using an external force, and the distance between the slide cover and the accommodating cavity is relatively short, so that the magnetic force between the magnetic ring 20 and the annular magnet 10 is increased, the magnetic ring and the annular magnet are automatically attracted and respectively attached to two sides of the valve plate 3; because the side of the valve plate 3 facing the liquid inlet pipe 4 is smooth, the liquid flow between the liquid inlet pipe 4 and the cavity is thoroughly cut off, and at the moment, the magnetic ring 20 is also attached to the valve plate under the action of magnetic force; therefore, the cavities are connected with the liquid outlet pipe 5 only through the strip-shaped grooves 32.
Moreover, due to the rapid action of external force and magnetic force, the pressure of the drug in the cavity is rapidly increased by the high pressure in a short time, the sealing ring 11 expands, and the sealing ring 11 rebounds slowly, so that the compressed drug flows towards the direction of the liquid outlet pipe 5 through the strip-shaped groove 32, and finally the state of fig. 3 is formed.
In the process of next use, only other transfusion equipment needs to be connected, and then new liquid medicine can be automatically sucked through the containing cavity by pulling the sliding cover and the containing cavity open, so that the transfusion communication effect is realized.
And because the valve block is elastic structure, under emergency, the liquid inlet pipe also can accept the urgent injection of high pressure medicine, so long as control injection speed, then can ooze the liquid medicine between valve block and the annular magnet this moment, and can play the effect of check valve.
In the infusion joint provided by the embodiment of the invention, in the tube sealing operation, the sliding cover is pressed and magnetically attracted with the accommodating cavity, so that the liquid flow can be firstly blocked through the valve plate, high-pressure liquid is formed in the accommodating cavity, and the high-pressure liquid is slowly released to the liquid outlet tube through the slow contraction action of the sealing ring, thereby avoiding thrombus possibly caused by blood backflow.
The pipe sealing operation can be completed by only one action, the operation is simple, convenient and efficient, the manual repeated injection of the pipe sealing liquid is avoided, the operation of sealing the pipe by controlling the opening and closing of the small clamp on the extension pipe is required, and the commercial application value is very high.
As in fig. 1 and 2; in the infusion joint of the present embodiment, a section of the liquid outlet pipe 5 located in the containing cavity is a liquid outlet cavity 21; one end of the liquid outlet cavity 21 is communicated with the liquid outlet pipe 5, and the other end is fixed with the magnetic ring 20; the liquid medicine in the containing cavity is connected with the liquid storage tube 5 through the liquid outlet cavity 21 by the magnetic ring 20.
The liquid outlet cavity 21 is internally provided with a limiting support 22, the fiber support 22 is generally of a sleeve structure, and the limiting support 22 is used for ensuring that the valve plate 3 slides left and right without falling off. A sliding column 60 is arranged on the valve plate 3; the sliding column 60 is sleeved in the limiting bracket 22, so that the valve plate 3 slides left and right relative to the limiting bracket 22 through the sliding column 60.
Generally, the sliding column 60 is made of stainless steel, and the limiting bracket 22 is a plastic sleeve to ensure that the sliding column 60 slides left and right in the length direction.
Furthermore, the sliding column 60 has a first end and a second end, the first end is provided with a limiting ball 30, and the valve plate 3 is mounted on the sliding column 60 through the limiting ball 30; the diameter of the limiting ball 30 is smaller than that of the magnetic ring 20.
The limiting ball 30 and the valve plate 3 can be integrally formed by injection molding, and the limiting ball is mainly used for being embedded into the magnetic ring and the annular magnet in a closed state, so that the edge of the valve plate can be ensured to be in close contact with the magnetic ring or the annular magnet, and the sealing property is improved; the limiting ball can also enable the magnetic ring and the annular magnet to be more accurately positioned after attraction, so that the maximum magnetic attraction force is obtained, and the closing action between the sliding cover and the accommodating cavity is faster and more accurate.
In the infusion joint of the embodiment, the sealing ball 6 is arranged at the second end of the sliding column 60; the magnetic ring 20 attracts the ring magnet 10, so that the sealing ball 6 seals the liquid outlet pipe 5.
As shown in fig. 1, 2 and 3, after the sliding cover 2 and the accommodating cavity 1 approach each other, because the sealing ring 11 is not fully contracted, the pressure of the liquid medicine in the accommodating cavity is high, at this time, the valve plate is deformed and bent to the left side, and the sealing ring is deformed and bent to the right side, so as to accommodate the high-pressure liquid; however, after the high-pressure liquid is slowly released, the limiting ball 30 automatically returns to the original position under the condition that the pressures on the two sides of the valve plate are the same, and the limiting ball 30 drives the sealing ball 6 through the sliding column 60 to completely seal the liquid outlet pipe 5, so that the double blocking effect is realized, and the liquid backflow and the blood backflow are further avoided.
Preferably, the sliding cover 2 is provided with a diversion hole 25; the two sides of the diversion hole 25 are respectively communicated with the liquid outlet pipe 5 and the liquid outlet cavity 21; the edge of the diversion hole 25 is provided with a sealing ring which corresponds to the sealing ball 6. The sealing ring is generally an elastic sealing ring, so that the sealing ball 6 is better accommodated, and the blocking of the diversion hole 25 and the liquid outlet pipe 5 is realized.
Therefore, furthermore, the section of the valve plate 3 is a V-shaped structure, and the opening angle of the V-shaped structure is 145-170 degrees; the opening of the V-shaped structure faces the magnet ring 20.
Because the valve block has certain opening angle, therefore the valve block can play the effect of water conservancy diversion and better check valve, and under the condition of unusual high pressure or refluence appeared in drain pipe one end, the valve block can remove to the feed liquor pipe direction automatically to seal the feed liquor pipe in the short time.
In addition, because the valve plate has a certain opening angle, when the pressure of the liquid inlet pipe rapidly increases in a short time under the opening state of the infusion joint, the valve plate can rapidly move towards the liquid outlet, and the flow of the liquid outlet pipe is blocked by the sealing ball. Therefore, under the overall action of the valve plate, the limiting ball and the sealing ball, the comprehensive action of the check valve, the throttle valve and the emergency pressure reducing valve can be achieved, and the valve has high practical value.
In the infusion joint of the embodiment, the sliding cover 2 is provided with an operating handle 50; the operating handle 50 is of a disc-shaped structure, is positioned outside the accommodating cavity and is vertically fixed on the liquid outlet pipe 5; and the operating handle 50 is provided with anti-skid lines. The lever 50 can provide a greater frictional force to facilitate the pulling out or inserting of the slide cover 2.
In this embodiment, the accommodating chamber 1 is a hollow conical structure, the opening is a larger end, and the liquid inlet pipe 4 is arranged at a smaller end; the action that can make the shrink after the sealing ring 11 inflation takes place at the edge of the great one end of holding chamber like this to make the rebound effect pour into more liquid medicines, guarantee that blood can not flow backwards, also play better washing effect.
In addition, the hollow conical structure is favorable for buffering a certain amount of bubbles, prevents the bubbles from entering the liquid outlet pipe, and improves the safety. Moreover, the hollow conical structure can be better attached to the V-shaped structure, and the sealing performance is improved (as shown in figures 2 and 3).
The sliding cover 2 is disc-shaped; the diameter of the sliding cover 2 is smaller than that of the opening, so that the sliding cover 2 slides and is embedded into the opening.
After the sliding cover 2 is embedded into the accommodating cavity 1, the sliding cover 2 also drives the sealing ring 11 to contract in the accommodating cavity 1 in a pipe sealing state. The sealing ring 11 which is easy to damage is not exposed outside, and the safety of the whole device is ensured.
Preferably, in order to ensure the elasticity and durability of the sealing ring, a plurality of corrugated expansion rings are arranged on the sealing ring 11 and are nested with each other, so as to provide better resilience and folding resistance.
As shown in fig. 4, in general, the plurality of bar-shaped grooves 32 are arranged on the valve plate 3 in a central symmetrical structure, and the length of each bar-shaped groove 32 exceeds the width of the magnetic ring 20.
The infusion joint of the embodiment of the invention has the advantages that:
1. the pipe sealing operation can be realized only by one pressing action operation; and the action is reliable, and misoperation cannot be caused.
2. When the infusion joint is reopened for use, the sliding cover and the accommodating cavity are only required to be pulled open.
3. In an emergency state, the valve has the functions of preventing backflow, a check valve, a flow stabilizing valve and a pressure regulating valve, and is wide in application range.
4. The invention has simple structure, low batch manufacturing cost, multiple sealing structures and excellent reliability.
5. The invention is combined with the remaining needle, can effectively reduce the use cost and the operation difficulty of the remaining needle, can partially replace the function of the positive pressure joint of the remaining needle, and has good product adaptability.
In addition, the infusion joint has the advantages of low batch production cost, safety, reliability, compact structural design, quick and stable action and convenient use, and is suitable for various backflow prevention devices such as indwelling needles, infusion tubes, medical syringes and the like.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments. Through the above description of the embodiments, those skilled in the art will clearly understand that the above embodiment method can be implemented by some modifications plus the necessary general technical overlap; of course, the method can also be realized by simplifying some important technical features in the upper level. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art is: overall function and construction, and to cooperate with the structure described in the various embodiments of the present invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An infusion connector, comprising: the device comprises an accommodating cavity, a sliding cover and an elastic valve plate; the accommodating cavity is provided with an opening, and the opening is provided with an elastic and telescopic sealing ring; the sliding cover is connected with the opening through the sealing ring, so that the accommodating cavity and the sliding cover form a closed accommodating cavity;
the containing cavity is provided with a liquid inlet pipe, and the sliding cover is provided with a liquid outlet pipe; the liquid inlet pipe and the liquid outlet pipe are communicated with the cavity;
in the containing cavity, the end part of the liquid inlet pipe is fixed with an annular magnet, and the end part of the liquid outlet pipe is provided with a magnetic ring; the magnetic ring is attracted with the annular magnet, and the valve plate is positioned between the magnetic ring and the annular magnet;
one surface of the valve plate, which faces the magnetic ring, is provided with a plurality of strip-shaped grooves; the sliding cover moves towards the accommodating cavity so that the magnetic ring and the annular magnet are respectively attached to two sides of the valve plate, and the accommodating cavity is communicated with the liquid outlet pipe only through the strip-shaped groove.
2. The infusion connector according to claim 1, wherein a section of the liquid outlet pipe located in the containing cavity is a liquid outlet cavity; one end of the liquid outlet cavity is communicated with the liquid outlet pipe, and the other end of the liquid outlet cavity is fixed with the magnetic ring;
a limiting bracket is arranged in the liquid outlet cavity, and a sliding column is arranged on the valve plate; the sliding column is sleeved in the limiting support, so that the valve plate can slide left and right relative to the limiting support through the sliding column.
3. The infusion connector according to claim 2, wherein the spool has a first end and a second end, the first end having a stop ball disposed thereon, the valve plate being mounted on the spool via the stop ball; the diameter of the limiting ball is smaller than that of the magnetic ring.
4. The infusion connector according to claim 3, wherein a sealing ball is disposed on the second end; the magnetic ring is attracted with the annular magnet, so that the liquid outlet pipe is sealed by the sealing ball.
5. The infusion connector as claimed in claim 3, wherein the valve plate has a V-shaped cross section, and the opening angle of the V-shaped cross section is 145-170 degrees; the opening of the V-shaped structure faces the magnetic ring.
6. The infusion connector according to any one of claims 1-5, wherein the sliding cover is provided with an operating handle; the operating handle is of a disc-shaped structure, is positioned outside the containing cavity and is vertically fixed on the liquid outlet pipe; and the operating handle is provided with anti-skid lines.
7. The infusion connector according to any one of claims 1-5, wherein the receiving chamber has a hollow conical structure, the opening is a larger end, and the liquid inlet pipe is disposed at a smaller end;
the sliding cover is disc-shaped; the diameter of the sliding cover is smaller than that of the opening, so that the sliding cover can slide and be embedded into the opening.
8. The infusion connector according to claim 4, wherein the sliding cover is provided with a diversion hole; the two sides of the diversion hole are respectively communicated with the liquid outlet pipe and the liquid outlet cavity;
the edge of the diversion hole is provided with a sealing ring, and the sealing ring corresponds to the sealing ball.
9. The infusion connection according to any one of claims 1-5, wherein the sealing ring is provided with a plurality of mutually nested corrugated telescopic rings.
10. The infusion connection according to any one of claims 1-5, wherein a plurality of said strip-shaped grooves are arranged on said valve plate in a central symmetrical configuration, and the length of each of said grooves exceeds the width of said magnetic ring.
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| CN202011220290.2A CN112245706B (en) | 2020-11-05 | 2020-11-05 | Infusion joint |
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| US4769007A (en) * | 1987-03-25 | 1988-09-06 | Hsu Shun Fa | Automatic shutting-off sealing and alarming device for dripping injection use |
| CN1218696A (en) * | 1998-11-26 | 1999-06-09 | 贺洪平 | Rotary magnet type urethra valve |
| CN101195054A (en) * | 2007-11-21 | 2008-06-11 | 张亚平 | Non-needle positive pressure enclosed transfusion joint valve |
| CN202605411U (en) * | 2012-04-12 | 2012-12-19 | 福建省百仕韦医用高分子股份有限公司 | Medical needle-free positive pressure joint |
| CN103845791A (en) * | 2014-03-13 | 2014-06-11 | 李宜 | Indwelling catheter trace slow-release transfusion device |
| CN103861205A (en) * | 2014-03-13 | 2014-06-18 | 李林风 | Thrombus prevention device with indwelling catheter |
| CN104399144A (en) * | 2014-12-01 | 2015-03-11 | 邹卫平 | Remaining needle with slow release positive pressure |
| RU2652561C1 (en) * | 2017-05-30 | 2018-04-26 | Общество С Ограниченной Ответственностью "Континенталь-Мед" | Device for supplying of micro-quantities of a fluid |
| CN109420251A (en) * | 2017-08-27 | 2019-03-05 | 黄志鹏 | A kind of urinary catheter valve |
| CN109010990A (en) * | 2018-08-28 | 2018-12-18 | 河南曙光汇知康生物科技股份有限公司 | A kind of novel infusion needleless joint |
| CN210813053U (en) * | 2019-07-23 | 2020-06-23 | 南宁学院 | Infusion drip cup |
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| CN112245706A (en) | 2021-01-22 |
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