CN111956949B - Continuous positive pressure infusion joint - Google Patents
Continuous positive pressure infusion joint Download PDFInfo
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- CN111956949B CN111956949B CN202010847519.9A CN202010847519A CN111956949B CN 111956949 B CN111956949 B CN 111956949B CN 202010847519 A CN202010847519 A CN 202010847519A CN 111956949 B CN111956949 B CN 111956949B
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- positive pressure
- rubber
- shell
- plug
- negative pressure
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/14—Tube connectors; Tube couplings for connecting tubes having sealed ends
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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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
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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
Abstract
The invention discloses a continuous positive pressure transfusion joint which comprises a rubber shell, a positive pressure rubber plug and an elastic negative pressure air bag, wherein a main cavity body through which liquid medicine can pass is arranged in the rubber shell, the positive pressure rubber plug and the elastic negative pressure air bag are arranged in the main cavity body and respectively form a sealed cavity, an external exhaust hole is arranged in the cavity where the positive pressure rubber plug is positioned, a gas permeation structure communicated with the outside is arranged in the cavity where the elastic negative pressure air bag is positioned, and the gas permeation structure is used for enabling external gas to slowly permeate into the cavity where the elastic negative pressure air bag is positioned in a reverse direction in the deformation recovery process of the elastic negative pressure air bag. The invention has simple structure and low manufacturing cost, can reduce the nursing workload of medical personnel, can realize quick positive pressure tube sealing after the transfusion is finished, and can also keep the continuous positive pressure of the pipeline for a long time, thereby effectively solving the problem of tube blockage of the indwelling needle.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a continuous positive pressure infusion joint.
Background
At present, various kinds of indwelling needles are used in large quantities in various hospitals. In actual use, however, the indwelling needle brings benefits to the doctor and the patient and is also accompanied by risks. Because the currently used indwelling needles all face the risk that the blood coagulation will occur to cause tube blockage when the infusion is stopped for a long time after the completion of the infusion. If the blocked tube generates thrombus, the health of the patient is greatly damaged. In order to solve the problem, a commonly used solution at present is that a nurse performs positive pressure tube sealing regularly at regular intervals (for example, 8 hours) in a hospital, but the method not only wastes time and labor, but also can cause tube blockage due to improper tube sealing method of the nurse. In order to solve the problem, a positive pressure joint is also commonly applied in the market, but the current products can only generate instant positive pressure and cannot keep the positive pressure state for a long time, so that the pipe blockage phenomenon still happens occasionally.
Disclosure of Invention
In view of the above disadvantages, the present invention aims to provide a continuous positive pressure infusion connector, which can generate an instant positive pressure tube sealing after the completion of infusion and automatically generate a long-time continuous positive pressure on an infusion tube, thereby effectively solving the problem of tube blockage.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a last malleation infusion connects, includes and glues shell, malleation plug and elasticity negative pressure gasbag glues the inside of shell and is equipped with the main cavity body that can supply the liquid medicine to pass through, and malleation plug and elasticity negative pressure gasbag are installed in the main cavity body and form sealed cavity separately, are equipped with external exhaust hole in the cavity that malleation plug was located, are equipped with the gas permeation structure with outside intercommunication in the cavity that elasticity negative pressure gasbag was located, the gas permeation structure is arranged in making the reverse slow infiltration of outside gas go into the cavity that elasticity negative pressure gasbag was located at elasticity negative pressure gasbag deformation recovery in-process.
As a preferred technical solution, the gas permeation structure comprises one or more of a duckbill valve, a one-way valve composed of a single-layer or multi-layer nano-porous polymer membrane, and a single or multiple one-way restricted microporous channels.
As a preferred technical scheme, the rubber shell comprises an upper rubber shell and a lower rubber shell, the upper rubber shell is fixedly connected with the lower rubber shell, and an inner cavity forms an infusion passage after the connection.
As a preferred technical scheme, the upper rubber shell is made of medical polymer plastic materials, the cross section of the upper rubber shell is circular or oval, the upper part of the upper rubber shell is provided with a female luer connector for inserting an external infusion injection connector, and the lower part of the upper rubber shell can be combined with the lower rubber shell and is connected with the lower rubber shell through UV glue.
As a preferable technical proposal, the lower rubber shell is made of medical polymer plastic material, the tail end of the lower rubber shell can be connected with an extension tube of an indwelling needle, and the lower rubber shell is connected through a central through hole to form a straight-through transfusion passage.
As a preferred technical scheme, the positive pressure rubber plug is made of an elastic high polymer material, the lower end of the positive pressure rubber plug is fixed on the lower rubber shell, the top of the positive pressure rubber plug is flush with a female luer connector of the upper rubber shell, and the positive pressure rubber plug is attached to a hollow cavity of the upper rubber shell to form a sealing part; the section of the lower part of the positive pressure rubber plug is semicircular, and the lower part of the positive pressure rubber plug is provided with a D-shaped hollow part.
As a preferred technical scheme, the elastic negative pressure air bag is provided with a hollow cavity, the lower end of the hollow cavity is fixed on the lower rubber shell, and the elastic negative pressure air bag is made of an elastic high polymer material or a slow-rebound high polymer material.
As a variation of the above technical solution, the invention further provides a continuous positive pressure infusion connector, which comprises a rubber shell and a rubber plug and air bag assembly, wherein a main cavity through which a liquid medicine can pass is arranged inside the rubber shell, the rubber plug and air bag assembly comprises a positive pressure rubber plug and an elastic negative pressure air bag, the rubber plug and air bag assembly is installed in the main cavity, a gas permeation structure communicated with the outside is arranged below the rubber shell and in a position corresponding to the rubber shell, and the gas permeation structure is used for enabling external gas to slowly permeate into the elastic negative pressure air bag in a reverse direction in the deformation recovery process of the elastic negative pressure air bag.
As a preferred technical solution, the gas permeation structure comprises one or more of a duckbill valve, a one-way valve composed of a single layer or a plurality of layers of nano-porous polymer membranes, and a single or a plurality of one-way restricted microporous channels.
As a preferred technical scheme, the rubber shell comprises an upper rubber shell and a lower rubber shell, the upper rubber shell and the lower rubber shell are fixedly connected, and an inner cavity forms an infusion passage after the connection;
the upper rubber shell is made of medical polymer plastic materials, the section of the upper rubber shell is circular or oval, the upper part of the upper rubber shell is provided with a female luer connector for inserting an external infusion injection connector, and the lower part of the upper rubber shell can be combined with the lower rubber shell and is connected with the lower rubber shell through UV glue;
the lower rubber shell is made of medical polymer plastic material, the tail end of the lower rubber shell can be connected with an extension tube of the indwelling needle, and the lower rubber shell is connected through a central through hole to form a straight-through transfusion passage;
the rubber plug air bag component is made of elastic high polymer materials, the lower end of the rubber plug air bag component is fixed on the lower rubber shell, the top of the rubber plug air bag component is flush with a female luer connector of the upper rubber shell, and the rubber plug air bag component is attached to a hollow cavity of the upper rubber shell to form a sealing part for preventing leakage of liquid medicine; the lower section of the rubber plug air bag component is circular or long circular, and the upper part of the rubber plug air bag component is provided with a D-shaped hollow part.
The invention has the beneficial effects that:
the invention is provided with the elastic negative pressure air bag which deforms in a coordinated manner when pressed down while the positive pressure rubber plug is arranged. When the outer transfusion joint is withdrawn after the transfusion is finished, the positive pressure rubber plug generates instant positive pressure to quickly seal the pipe. Meanwhile, the elastic negative pressure air bag is deformed and slowly recovered under the control of vacuum negative pressure, so that continuous positive pressure is generated, and blood backflow in the long-time infusion stopping process is prevented.
The invention has simple structure and low manufacturing cost, can reduce the nursing workload of medical personnel, can realize quick positive pressure tube sealing after the transfusion is finished, and can also keep the continuous positive pressure of the pipeline for a long time, thereby effectively solving the problem of tube blockage of the indwelling needle.
Drawings
FIG. 1 is a cross-sectional plan view of an embodiment 1 of a continuous positive pressure infusion connector of the present invention;
FIG. 2 is a schematic view of the structure of the positive pressure rubber plug of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
figure 5 is a schematic structural view of one embodiment of the duckbill valve of the present invention;
figure 6 is a schematic structural view of another embodiment of a duckbill valve of the present invention;
FIG. 7 is a cross-sectional plan view of an infusion connector embodiment 2 of continuous positive pressure in accordance with the present invention.
FIG. 8 is a schematic view of the flow of a medical fluid under continuous positive pressure infusion connector of embodiment 2 of the present invention;
FIG. 9 is a schematic view showing the flow of the liquid medicine when the external infusion connector is accessed in accordance with embodiment 1;
FIG. 10 is a schematic view showing the flow of the liquid medicine under a slight continuous positive pressure state after the external infusion connector is pulled out in example 1;
FIG. 11 is a schematic view showing a slight continuous positive pressure state in example 2.
The reference numerals are explained below:
101-gluing a shell; 102-lower rubber shell; 200-positive pressure rubber plug; 300-elastic negative pressure air bag; 400-air vent; 500-duckbill valve; 600-rubber plug airbag assembly.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are exemplified and described in detail with reference to the accompanying drawings. It should be noted that the following examples are illustrative and not limiting, and should not be construed as limiting the scope of the invention.
In the description of the present invention, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacting the first feature or the second feature through intervening media. Also, a first feature "on," "over," or "above" a second feature may be directly or diagonally above the first feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," or "beneath" a second feature may be that the first feature is directly under or obliquely beneath the second feature, or simply means that the first feature is at a lower level than the second feature.
In the description of the present invention, it is to be understood that the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly including one or more of the described features.
When an element is referred to as being "secured" to another element, it can be directly secured to the other element or secured through intervening elements. When an element is described as being "connected" to another element, it can be directly connected to the other element or be connected through intervening elements. The terms "upper," "lower," "left," "right," "top," "bottom," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
The utility model provides a last malleation infusion connects, as shown in figure 1, including gluing the shell, malleation plug 200 and elasticity negative pressure gasbag 300, it includes gluey shell 101 to glue the shell, lower gluey shell 102, go up gluey shell 101 and lower gluey shell 102 fixed connection, inside main cavity (cavity formation infusion route) that can supply the liquid medicine to pass through after connecting, the lower extreme of malleation plug 200 and elasticity negative pressure gasbag 300 respectively with lower gluey shell 102 fixed connection, install in the main cavity and form sealed cavity separately, the cavity below that malleation plug 200 located is equipped with external exhaust hole 400 with the position that lower gluey shell 102 corresponds, the cavity below that elasticity negative pressure gasbag 300 located is equipped with the duckbilled valve 500 that can communicate with the outside air with the position that lower gluey shell 102 corresponds.
When infusion starts, the positive pressure rubber plug 200 and the elastic negative pressure air bag 300 are pressed to deform along with the insertion of the male luer of the syringe, and air in a cavity formed by the positive pressure rubber plug 200 and the elastic negative pressure air bag and the lower rubber shell 102 is extruded out. After the infusion is finished, the positive pressure rubber plug 200 rebounds rapidly, closes the infusion passage and simultaneously pushes the liquid to flow in the positive direction to form an instant positive pressure; and elasticity negative pressure gasbag 300 forms the negative pressure in its cavity because duckbill valve 500's control, can not resume whole deformation immediately, and trace air sees through duckbill lancing constantly and oozes in under the effect of negative pressure, makes elasticity negative pressure gasbag 300 produce and lasts slow deformation and resume, and then constantly promotes trace liquid production forward flow for a long time to form in the infusion pipeline and last the malleation.
In this embodiment, the upper rubber casing 101 is made of medical polymer plastic material, the cross section of the upper rubber casing 101 is circular or elliptical, a hollow infusion path is arranged inside the upper rubber casing, a female luer connector for inserting an external infusion injection connector is further arranged on the upper rubber casing, the lower rubber casing 102 can be combined with the upper rubber casing 101, and the upper rubber casing can be connected with the lower rubber casing 102 through glue such as UV glue.
The lower rubber shell 102 is also made of medical polymer plastic material, and the tail end of the lower rubber shell 102 can be connected with an extension tube of an indwelling needle and is connected through a central through hole to form a straight infusion passage. The positive pressure rubber plug 200 and the elastic negative pressure air bag 300 form independent sealing chambers with the lower rubber shell 102 respectively.
As shown in fig. 2 to 4, the positive pressure rubber plug 200 is made of an elastic polymer material, the lower end of the positive pressure rubber plug 200 is fixed on the lower rubber casing 102, the top of the positive pressure rubber plug is flush with the female luer connector of the upper rubber casing 101, and the positive pressure rubber plug is attached to the hollow cavity of the upper rubber casing 101 to form a sealing part for preventing leakage of the liquid medicine; the section of the lower part of the positive pressure rubber plug 200 (section A-A in figure 2) is semicircular and is provided with a D-shaped hollow. The upper section (B-B section in figure 2) is circular and also provided with a D-shaped hollow.
As shown in fig. 9, when the infusion connector is inserted, the small D-shaped hollow part of the head part (B-B section) of the positive pressure rubber plug 200 is crumpled and deformed, so that the positive pressure rubber plug is tilted sideways to open the infusion passage. In the process of pressing down the infusion joint, the volume of the whole rubber plug is reduced, and when the infusion joint is withdrawn after the infusion is finished, the reduced volume is immediately recovered to extrude liquid to form positive pressure. The shape of the positive pressure rubber plug 200 is semicircular, and the hollow part of the section A-A is correspondingly arranged into a D shape.
With the insertion of the injection connector, the positive pressure rubber plug 200 is deformed by pressing down and is tilted, thereby opening the liquid passage. Meanwhile, the air vent 400 exhausts the air in the sealed cavity enclosed by the positive pressure rubber plug 200 and the lower rubber shell 102. After the infusion is finished, the positive pressure rubber plug 200 is deformed and rapidly recovered under the action of the elasticity of the positive pressure rubber plug, and instantaneous positive pressure is generated to push liquid to flow while the infusion interface is sealed, so that the effect of rapidly sealing the tube is realized.
In this embodiment, the elastic negative pressure air bag 300 has a hollow cavity, and the lower end of the hollow cavity is fixed on the lower rubber shell 102, and the elastic negative pressure air bag 300 may be made of elastic polymer material, such as silicon rubber, TPE, and other materials.
The elastic negative pressure air bag 300 can also be made of medical grade rebound polymer material, as long as the material has the characteristic that the deformation is slowly recovered when the pressure is withdrawn.
The positive pressure rubber plug 200 forces the elastic negative pressure air bag 300 to generate cooperative deformation when being pressed down.
As shown in figure 5, duckbill valve 500 is a component that can reverse the slow permeation of gases. In addition to the duckbill valve 500, the assembly may be a one-way valve (as shown in figure 6) constructed from a single or multiple layers of a nanoporous polymeric membrane, or may be a single or multiple one-way restricted microporous passageways. In short, the air bag can limit the air from slowly permeating into the negative pressure elastic air bag 300 under the action of the negative pressure.
Figure 5 is duckbilled valve, has a incision in the bottom, and elasticity negative pressure gasbag is when receiving malleation plug extrusion deformation, and this incision formation route is opened in the internal pressure rising jack-out, and the incision is tightly closed during the reversal, and gas can only slowly permeate through the incision. Fig. 6 is a one-way valve, a bowl-shaped silica gel elastic body is arranged in the middle, when the forward pressure is large, the bowl-shaped body is pressed to deform, a channel is opened, and when the reverse pressure is large, the channel is closed, and gas can only slowly permeate into the channel through a sealing surface. The duckbill valve of figure 5 is preferred for this embodiment because of the relatively simple structure of figure 5.
The continuous malleation infusion that this embodiment provided connects, by last rubber casing 101 and the lower main cavity body that rubber casing 102 formed the infusion, set up malleation plug 200 and elasticity negative pressure gasbag 300 respectively in the main cavity body, malleation plug 200 quick deformation resumes to form in the twinkling of an eye malleation seal pipe after the infusion is accomplished, and elasticity negative pressure gasbag 300 deformation slowly resumes under the control of vacuum negative pressure, consequently can continue to form long-time continuous malleation behind malleation plug 200 seal pipe.
As shown in fig. 9, when the external infusion connector is connected, the positive pressure rubber plug 200 is extruded and deformed, because the diameter of the largest section of the rubber plug is slightly smaller than the diameter of the inner wall of the rubber shell, and the middle of the rubber plug can be provided with an interval hole or a gap is reserved between the positive pressure rubber plug 200 and the chamber of the elastic negative pressure air bag 300, so that the liquid medicine can flow through the two sides of the inner wall of the rubber shell and the middle passage, thereby opening the liquid medicine passage. Fig. 10 shows that after the infusion is finished, the instant positive pressure rubber plug 200 withdrawn from the external infusion connector is reset to form a positive pressure tube sealing, the elastic negative pressure air bag 300 starts to slowly recover from deformation to form a continuous positive pressure to push the liquid medicine to continue flowing.
Example 2
The positive pressure rubber plug 200 and the elastic negative pressure air bag 300 can have various shapes and arrangement modes, and even the elastic negative pressure air bag 300 can be designed as a part of the positive pressure rubber plug 200 and is integrated with the positive pressure rubber plug 200, so that the assembly structure is simplified.
Therefore, this embodiment provides a continuous malleation infusion connects, simplifies into a part with malleation plug 200 and elasticity negative pressure gasbag 300, as shown in fig. 7, including gluing shell, plug gasbag subassembly 600, the inside of gluing the shell is equipped with the main cavity body that can supply the liquid medicine to pass through, glues the shell and includes upper rubber shell 101, lower rubber shell 102, upper rubber shell 101 and lower rubber shell 102 fixed connection. Plug gasbag subassembly 600 includes malleation plug and elasticity negative pressure gasbag, and plug gasbag subassembly 600 is installed in the main cavity, and the position that its below corresponds down rubber shell 102 is equipped with the gas permeation structure with outside intercommunication, the gas permeation structure is arranged in making the reverse slow infiltration of outside gas go into elasticity negative pressure gasbag 300 in elasticity negative pressure gasbag deformation recovery in-process.
In this embodiment, the gas permeable structure is a duckbill valve 500.
In this embodiment, the upper rubber casing 101 is made of medical polymer plastic material, the cross section of the upper rubber casing 101 is circular or elliptical, a hollow infusion path is arranged inside the upper rubber casing, a female luer connector for inserting an external infusion injection connector is further arranged on the upper rubber casing, and the lower rubber casing 102 can be combined with the upper rubber casing 101 and connected with the lower rubber casing 102 through glue such as UV glue.
The lower rubber shell 102 is also made of medical polymer plastic material, and the tail end of the lower rubber shell 102 can be connected with an extension tube of an indwelling needle and is connected through a central through hole to form a straight infusion passage. The positive pressure rubber plug 200 and the elastic negative pressure air bag 300 are combined into a whole to form a rubber plug air bag component 600, and the rubber plug air bag component and the lower rubber shell form a sealing chamber.
In this embodiment, the rubber plug airbag assembly 600 is made of an elastic polymer material, the lower end of the rubber plug airbag assembly 600 is fixed on the lower rubber casing 102, the top of the rubber plug airbag assembly is flush with the female luer of the upper rubber casing 101, and the rubber plug airbag assembly is attached to the hollow cavity of the upper rubber casing 101 to form a sealing part for preventing leakage of liquid medicine; the lower section (section A-A in figure 2) of the rubber plug air bag component can be round or oblong, and the upper part is provided with a D-shaped hollow.
With the injection fitting inserted, the plug bladder assembly 600 is deflected as it is pressed downward, thereby opening the fluid path. While the pressure rise in the cavity squeezes duckbill valve 500 open to vent air. After the infusion is completed, the rubber plug airbag assembly 600 is deformed and rapidly recovered under the action of the elasticity of the rubber plug airbag assembly, and meanwhile, instant positive pressure is generated to push liquid to flow, so that the effect of rapidly sealing the tube is achieved. However, under the control of the duckbill valve 500, air cannot flow back into the cavity quickly, so that the cavity is in a negative pressure vacuum state, as shown in fig. 11, the deformation of the lower thin wall of the rubber plug airbag assembly 600 cannot be completely recovered, and the rubber plug airbag assembly is out of round. This deformation is slowly restored as the amount of air constantly seeped through the duckbill valve 500 slit increases, thereby creating a slight amount of continuous positive pressure. FIG. 11 is a schematic diagram of the micro-continuous positive pressure state.
The flow direction of the liquid passage of the continuous positive pressure infusion connector of the embodiment is shown in fig. 8 and 11.
The invention is provided with the elastic negative pressure air bag which deforms in a coordinated manner when pressed down while the positive pressure rubber plug is arranged. When the outer transfusion joint is withdrawn after the transfusion is finished, the positive pressure rubber plug generates instant positive pressure to quickly seal the pipe. Meanwhile, the elastic negative pressure air bag is deformed and slowly recovered under the control of vacuum negative pressure, so that continuous positive pressure is generated, and blood backflow in the long-time infusion stopping process is prevented.
The invention has simple structure and low manufacturing cost, can reduce the nursing workload of medical personnel, can quickly realize positive pressure tube sealing after the transfusion is finished, and can also keep the continuous positive pressure of the pipeline for a long time, thereby effectively solving the problem of tube blockage of the indwelling needle.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be considered to be equivalent or modified within the technical scope of the present invention.
Claims (10)
1. The utility model provides a last malleation infusion connects, a serial communication port, including gluing shell, malleation plug and elasticity negative pressure gasbag, the inside of gluing the shell is equipped with the main cavity body that can supply the liquid medicine to pass through, and malleation plug and elasticity negative pressure gasbag are installed in the main cavity body and are formed sealed cavity separately, are equipped with external exhaust hole in the cavity that the malleation plug was located, are equipped with the gas permeation structure with outside intercommunication in the cavity that elasticity negative pressure gasbag was located, the gas permeation structure is arranged in making the reverse slow infiltration of outside gas go into the cavity that elasticity negative pressure gasbag was located at elasticity negative pressure gasbag deformation recovery in-process, and the malleation plug can force elasticity negative pressure gasbag to produce deformation in coordination when pushing down.
2. The continuous positive pressure infusion connector of claim 1, wherein the gas permeable structure comprises one or more of a duckbill valve, a one-way valve comprised of a single or multi-layer nanoporous polymeric membrane, a single or multiple one-way restricted microporous channels.
3. The continuous positive pressure infusion connector of claim 1, wherein the rubber shell comprises an upper rubber shell and a lower rubber shell, the upper rubber shell and the lower rubber shell are fixedly connected, and the inner cavity forms an infusion path after the connection.
4. The continuous positive pressure infusion connector of claim 3, wherein the upper rubber casing is made of medical polymer plastic material, has a circular or elliptical cross section, is provided with a female luer connector for inserting an external infusion injection connector at the upper part, is combined with the lower rubber casing at the lower part, and is connected with the lower rubber casing through UV glue.
5. The continuous positive pressure infusion connector of claim 3, wherein the lower rubber casing is made of medical polymer plastic material, and the tail end of the lower rubber casing is connected with the extension tube of the indwelling needle and forms a straight infusion passage through the central through hole.
6. The continuous positive pressure infusion joint according to claim 3, wherein the positive pressure rubber plug is made of an elastic polymer material, the lower end of the positive pressure rubber plug is fixed on the lower rubber shell, the top of the positive pressure rubber plug is flush with the female luer joint of the upper rubber shell, and the positive pressure rubber plug is attached to the hollow cavity of the upper rubber shell to form a sealing part; the section of the lower part of the positive pressure rubber plug is semicircular, and the lower part of the positive pressure rubber plug is provided with a D-shaped hollow part.
7. The continuous positive pressure infusion connector of claim 3, wherein the elastic negative pressure air bag is provided with a hollow cavity, the lower end of the hollow cavity is fixed on the lower rubber shell, and the elastic negative pressure air bag is made of elastic high polymer materials.
8. The utility model provides a last malleation infusion connects, its characterized in that, is equipped with the main cavity body that can supply the liquid medicine to pass through including gluing shell, plug gasbag subassembly, the inside of gluing the shell, and plug gasbag subassembly includes malleation plug and elasticity negative pressure gasbag, and plug gasbag subassembly is installed in the main cavity, and the position that its below corresponds to glue the shell is equipped with the gas permeation structure with outside intercommunication, the gas permeation structure is arranged in making the reverse slow infiltration of outside gas elasticity negative pressure gasbag in elasticity negative pressure gasbag deformation recovery in-process, and the malleation plug can force elasticity negative pressure gasbag to produce when pushing down and warp in coordination.
9. The continuous positive pressure infusion connector of claim 8, wherein the gas permeable structure comprises one or more of a duckbill valve, a one-way valve comprised of a single or multi-layer nanoporous polymeric membrane, a single or multiple one-way restricted microporous channels.
10. The continuous positive pressure infusion connector of claim 8, wherein the rubber shell comprises an upper rubber shell and a lower rubber shell, the upper rubber shell and the lower rubber shell are fixedly connected, and an infusion path is formed by an inner cavity after the connection;
the upper rubber shell is made of medical polymer plastic materials, the section of the upper rubber shell is circular or oval, the upper part of the upper rubber shell is provided with a female luer connector for inserting an external infusion injection connector, and the lower part of the upper rubber shell is combined with the lower rubber shell and is connected with the lower rubber shell through UV glue;
the lower rubber shell is made of medical polymer plastic material, the tail end of the lower rubber shell is connected with an extension tube of the indwelling needle and is connected through a central through hole to form a straight-through transfusion passage;
the rubber plug air bag component is made of elastic high polymer materials, the lower end of the rubber plug air bag component is fixed on the lower rubber shell, the top of the rubber plug air bag component is flush with a female luer connector of the upper rubber shell, and the rubber plug air bag component is attached to a hollow cavity of the upper rubber shell to form a sealing part for preventing leakage of liquid medicine; the lower section of the rubber plug air bag component is circular or long circular, and the upper part of the rubber plug air bag component is provided with a D-shaped hollow part.
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| CN202010847519.9A CN111956949B (en) | 2020-08-21 | 2020-08-21 | Continuous positive pressure infusion joint |
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| CN202010847519.9A CN111956949B (en) | 2020-08-21 | 2020-08-21 | Continuous positive pressure infusion joint |
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