CN211327768U - One-way valve and infusion device - Google Patents
One-way valve and infusion device Download PDFInfo
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- CN211327768U CN211327768U CN201921031960.9U CN201921031960U CN211327768U CN 211327768 U CN211327768 U CN 211327768U CN 201921031960 U CN201921031960 U CN 201921031960U CN 211327768 U CN211327768 U CN 211327768U
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Abstract
The utility model discloses a one-way valve and an infusion device, wherein, the one-way valve comprises a first shell, and the first shell is provided with a liquid passing channel; the second shell is connected to the first shell, a liquid passing cavity is concavely arranged on the surface of the second shell, which is far away from the first shell, a first mounting groove communicated with the liquid passing channel is arranged on the surface of the second shell, which faces the first shell, and a liquid passing hole communicated with the bottom wall of the first mounting groove is arranged on the periphery of the bottom wall of the liquid passing cavity of the second shell; and the sealing element is arranged between the first shell and the second shell and at least partially embedded in the first mounting groove so as to open or close the liquid passing hole and enable the liquid passing channel to be communicated with or blocked from the liquid passing cavity. The utility model discloses technical scheme produces the bubble when having avoided liquid to carry, has improved the quality of liquid.
Description
Technical Field
The utility model relates to the technical field of medical equipment, in particular to a check valve and an infusion device applying the check valve.
Background
In order to prevent the liquid from flowing back during the transfusion treatment or drainage of a patient, the check valve is widely applied to medical instruments such as a syringe, a tracheal cannula, a catheter and the like. At present, a gasket is arranged in a channel of a gasket type one-way valve on the market, and liquid flowing back is stopped by the gasket. However, in the process of using the gasket type check valve, after the gasket is started, the liquid flowing at high speed flows through the periphery of the gasket and then flows into the liquid outlet channel of the check valve. Therefore, the flow path of the liquid is greatly changed, so that the stability of liquid conveying is influenced, bubbles are generated in the liquid, and the quality of the liquid is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a check valve, the bubble that produces when aiming at avoiding liquid to carry improves the quality of liquid.
In order to achieve the above object, the utility model provides a check valve includes:
the first shell is provided with a liquid passing channel;
the second shell is connected to the first shell, a liquid passing cavity is concavely arranged on the surface of the second shell, which is far away from the first shell, a first mounting groove communicated with the liquid passing channel is arranged on the surface of the second shell, which faces the first shell, and a liquid passing hole communicated with the bottom wall of the first mounting groove is arranged on the periphery of the bottom wall of the liquid passing cavity of the second shell; and
and the sealing element is arranged between the first shell and the second shell and at least partially embedded in the first mounting groove so as to open or close the liquid passing hole and enable the liquid passing channel to be communicated with or blocked from the liquid passing cavity.
In an embodiment of the present invention, the liquid passing hole is circular.
In an embodiment of the present invention, the liquid passing holes are provided in a plurality of positions, and the liquid passing holes are distributed along the periphery of the cavity bottom wall of the liquid passing cavity at intervals.
In an embodiment of the present invention, the number of the liquid passing holes is three, and three of the liquid passing holes are uniformly distributed along the periphery of the cavity bottom wall of the liquid passing cavity.
The utility model discloses an in an embodiment, the sealing member be equipped with communicate in cross the through-hole of liquid passageway, through-hole sealing member all around inlays to be located in the first mounting groove, cross the area in liquid hole and be greater than the area of through-hole.
In an embodiment of the present invention, the sealing member faces the surface of the first mounting groove bottom wall and is provided with a first groove, the bottom wall of the first groove is provided with the through hole, the bottom wall of the first mounting groove is provided with a pressing post, and the pressing post deviates from the end portion of the first mounting groove bottom wall and is inserted into the first groove.
The utility model discloses an in the embodiment, the compression leg deviates from the peripheral ring of the terminal surface of first mounting groove diapire is equipped with protruding muscle, the tank bottom wall of first recess is concave to be equipped with the second recess, the second recess is followed the periphery of first recess groove diapire encircles the setting, protruding muscle inlays to be located in the second recess.
In an embodiment of the present invention, a connection structure for connecting with an infusion tube is disposed at an end of the second housing away from the first housing.
In an embodiment of the present invention, the connecting structure is disposed on the one end outer sidewall of the first housing, and the second housing is a hollow body.
The utility model also provides an infusion set, including the check valve, the check valve includes:
the first shell is provided with a liquid passing channel;
the second shell is connected to the first shell, a liquid passing cavity is concavely arranged on the surface of the second shell, which is far away from the first shell, a first mounting groove communicated with the liquid passing channel is arranged on the surface of the second shell, which faces the first shell, and a liquid passing hole communicated with the bottom wall of the first mounting groove is arranged on the periphery of the bottom wall of the liquid passing cavity of the second shell; and
the sealing element is arranged between the first shell and the second shell and at least partially embedded in the first mounting groove so as to open or close the liquid passing hole and enable the liquid passing channel to be communicated with or blocked from the liquid passing cavity;
the infusion device further comprises:
the first infusion tube is connected to one side of the one-way valve and communicated with the one-way valve; and
and the second infusion tube is connected to the other side of the one-way valve and communicated with the one-way valve.
The technical scheme of the utility model the leading-in liquid of opening of crossing the liquid chamber through the second casing, liquid is in the first mounting groove of liquid hole entering, by the sealing member shutoff and the gathering in first mounting groove. After liquid in waiting first mounting groove produces certain pressure, order about the sealing member and take place deformation and open the liquid hole, make first mounting groove communicate in the liquid passageway of crossing of first casing to make the liquid of the intracavity of crossing night of second casing can enter into the liquid passageway of crossing of first casing. When liquid is led in from the end, far away from the second shell, of the liquid passing channel of the first shell, the sealing element is driven to abut against the bottom wall of the first mounting groove to block the liquid passing hole after the liquid enters the first mounting groove, and therefore the liquid in the liquid passing channel of the first shell cannot enter the liquid passing cavity of the second shell. Therefore, the liquid can only enter the liquid passing channel of the first shell from the overnight cavity of the second shell, so that the one-way circulation of the liquid is realized. In addition, because the liquid in the scheme enters the liquid passing channel along the flow path with smaller change after gathering a certain pressure to start the sealing element, the rapid change of the flow direction of the liquid when passing through the sealing element is effectively relieved, the stability of liquid conveying is ensured, bubbles are avoided, and the quality of the liquid is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an embodiment of the check valve of the present invention;
fig. 2 is an exploded view of the check valve of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
250 | Convex |
| 110 | |
260 | |
| 120 | |
300 | |
| 200 | |
310 | |
| 210 | |
320 | Plugging |
| 220 | |
321 | Through |
| 230 | |
322 | The |
| 240 | |
323 | Second groove |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a check valve.
Referring to fig. 1, in an embodiment of the present invention, the check valve includes a first housing 100, a second housing 200, and a sealing member 300; wherein, the first casing 100 is provided with a liquid passing channel 110; the second housing 200 is connected to the first housing 100, a liquid passing cavity 210 is concavely arranged on the surface of the second housing 200 departing from the first housing 100, a first mounting groove 220 connected to the liquid channel 110 is arranged on the surface of the second housing 200 facing the first housing 100, and a liquid passing hole 230 communicated with the bottom wall of the first mounting groove 220 is arranged on the periphery of the bottom wall of the liquid passing cavity 210 of the second housing 200; the sealing member 300 is disposed between the first casing 100 and the second casing 200, and at least partially embedded in the first mounting groove 220 to open or close the liquid passing hole 230, so that the liquid passing channel 110 is communicated with or blocked from the liquid passing cavity 210.
In the present embodiment, referring to fig. 2, the sealing element 300 includes an annular sealing element body 310 and a blocking portion 320 extending inward from the sealing element body 310 to the periphery of the surface of the first mounting groove 220, the sealing element body 310 is disposed between the first casing 100 and the second casing 200, and the blocking portion 320 is embedded in the first mounting groove 220 and blocks the liquid passing hole 230, so that when liquid gathers in the first mounting groove 220 to generate a certain pressure, the blocking portion 320 deforms in a direction away from the bottom wall of the first mounting groove 220, thereby opening the liquid passing hole 230. Further, the first sealing member 300 is made of a silicone member, such that the sealing member 300 has a certain elasticity and is easily deformed after a certain pressure is generated by the liquid collected in the first mounting groove 220, thereby facilitating the start of the sealing member 300. Of course, in other embodiments, the sealing member 300 may be made of rubber. In order to improve the stability of the installation of the sealing element 300, the first housing 100 is concavely provided with a second installation groove 120 on the surface facing the second housing 200, the liquid passing channel 110 is communicated with the bottom wall of the second installation groove 120, and the sealing element body 310 of the sealing element 300 is embedded in the second installation groove 120, so that the groove side wall of the second installation groove 120 has a limiting effect on the circumferential direction of the sealing element 300.
The technical scheme of the utility model the leading-in liquid of the opening of crossing sap cavity 210 through second casing 200, liquid is in passing through liquid hole 230 and getting into first mounting groove 220, is blocked by sealing member 300 and gathers in first mounting groove 220. After the liquid in the first mounting groove 220 generates a certain pressure, the sealing member 300 is driven to deform to open the liquid passing hole 230, so that the first mounting groove 220 is communicated with the liquid passing channel 110 of the first housing 100, and the liquid in the overnight chamber of the second housing 200 can enter the liquid passing channel 110 of the first housing 100. When liquid is introduced from the end of the liquid passing channel 110 of the first housing 100 away from the second housing 200, after entering the first mounting groove 220, the sealing member 300 is driven to abut against the bottom wall of the first mounting groove 220 to block the liquid passing hole 230, so that the liquid in the liquid passing channel 110 of the first housing 100 cannot enter the liquid passing cavity 210 of the second housing 200. In this way, the liquid can only enter the liquid passing channel 110 of the first casing 100 from the overnight chamber of the second casing 200, so that the liquid can be circulated in one direction. In addition, because the liquid in the scheme enters the liquid passing channel 110 along the flow path with smaller change after gathering a certain pressure to start the sealing element 300, the rapid change of the flow direction of the liquid when passing through the sealing element 300 is effectively relieved, the stability of liquid conveying is ensured, bubbles are avoided, and the quality of the liquid is improved.
In an embodiment of the present invention, the liquid passing hole 230 is circular.
It can be understood that such an arrangement reduces the frictional resistance of the hole wall of the liquid passing hole 230 to the liquid, thereby reducing the pressure loss during the liquid transportation process, improving the stability of the liquid transportation, and avoiding the generation of bubbles. Meanwhile, the liquid passing hole 230 is set to be circular, so that the liquid passing hole 230 is convenient to machine and form, and the manufacturing cost of the check valve is reduced.
In an embodiment of the present invention, the liquid passing holes 230 are provided in plural, and the plural liquid passing holes 230 are distributed at intervals along the circumference of the bottom wall of the liquid passing cavity 210.
It can be understood that the liquid passing holes 230 are provided in plurality, so that the liquid can reach a certain pressure in the first mounting groove 220 rapidly to drive the sealing member 300 to deform, thereby improving the liquid conveying efficiency.
In an embodiment of the present invention, there are three liquid passing holes 230, and the three liquid passing holes 230 are uniformly distributed along the circumference of the bottom wall of the liquid passing cavity 210.
It can be understood that three liquid passing holes 230 are provided, so that the liquid conveying efficiency is ensured; meanwhile, a certain strength of the second housing 200 is also ensured. And the three liquid passing holes 230 are uniformly distributed, so that the peripheral stress of the check valve is uniform when the check valve passes liquid, and the stability of the passing liquid is improved.
Referring to fig. 1, in an embodiment of the present invention, the sealing member 300 is provided with a through hole 321 communicated with the liquid passing channel 110, the sealing member 300 around the through hole 321 is embedded in the first mounting groove 220, and the area of the liquid passing hole 230 is larger than the area of the through hole 321.
It can be understood that there is pressure loss in the liquid conveying process, and therefore, the area of the liquid passing hole 230 is larger than that of the through hole 321, so that the liquid collected in the first mounting groove 220 can reach a certain pressure relatively quickly, and the sealing member 300 is driven to deform to conduct the liquid passing cavity 210 and the liquid passing channel 110, thereby improving the liquid conveying efficiency. Further, the through hole 321 is disposed in the middle of the blocking portion 320 of the sealing member 300 and is collinear with the center line of the liquid passing channel 110, so that the liquid can linearly enter the liquid passing channel 110 from the through hole 321, and the liquid is prevented from colliding with the inner wall of the liquid passing channel 110, thereby improving the stability of the liquid and preventing bubbles from being generated. It should be noted that, when one liquid passing hole 230 is provided, the area of the liquid passing hole 230 is the area of the liquid passing hole 230; when two or more liquid passing holes 230 are provided, the area of the liquid passing hole 230 is the sum of the areas of the two or more liquid passing holes 230.
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, a first groove 322 is disposed on a surface of the sealing member 300 facing the bottom wall of the first mounting groove 220, a through hole 321 is disposed on the bottom wall of the first groove 322, a pressing pillar 240 is protruded on the bottom wall of the first mounting groove 220, and an end of the pressing pillar 240 departing from the bottom wall of the first mounting groove 220 is inserted into the first groove 322.
It can be appreciated that the cooperation of the compression leg 240 and the first groove 322 makes the sealing member 300 abut the second housing 200 more tightly after being installed between the first housing 100 and the second housing 200, thereby improving the sealing effect of the sealing member 300. Therefore, the sealing member 300 can be driven to deform after the liquid reaches a certain pressure in the first mounting groove 220, and then the liquid is guided into the liquid passing channel 110 through the through hole 321. When the liquid flows back from the end of the liquid passing channel 110 away from the second housing 200 and enters the second mounting groove 120, the liquid pushes the sealing member 300 to drive the sealing member 300 to abut against the pressing column 240, thereby preventing the liquid from being introduced into the liquid passing chamber 210.
In an embodiment of the present invention, the edge ring of the end surface of the bottom wall of the first mounting groove 220 away from the pressing column 240 is provided with a protruding rib 250, the bottom wall of the first groove 322 is recessed to provide a second groove 323, the second groove 323 is disposed around the periphery of the bottom wall of the first groove 322, and the protruding rib 250 is embedded in the second groove 323.
Specifically, the surface of the compression leg 240 facing the bottom wall of the first groove 322 is provided with a circle of convex edges to form a convex rib 250, so as to further improve the sealing effect of the sealing element 300. Of course, in other embodiments, the surface of the pressing column 240 facing the bottom wall of the first groove 322 may be provided with a plurality of segments of protruding edges at intervals, so as to reduce the usage of production materials.
In an embodiment of the present invention, a connection structure 260 for connecting with a transfusion tube is disposed at an end of the second housing 200 away from the first housing 100.
It can be understood that the one-way valve and the infusion tube can be manufactured independently by the arrangement, so that the one-way valve and the infusion tube can be conveniently processed and molded. Further, the check valve can be detachably connected to the infusion tube through the connecting structure 260, so that the later-stage disassembly and maintenance are facilitated, the situation that the whole check valve and the infusion tube need to be replaced due to partial damage of a certain part is avoided, and the maintenance and replacement cost is reduced.
Referring to fig. 2, in an embodiment of the present invention, the connection structure 260 is disposed on an outer sidewall of an end of the second casing 200 departing from the first casing 100, and the connection structure 260 is an external thread.
It can be understood that the threaded connection mode is simple to install and reliable in effect, so that the early installation efficiency and the later disassembly efficiency of the check valve and the infusion tube are improved, and the installation effect between the check valve and the infusion tube is ensured. Of course, the present application is not limited thereto, and in other embodiments, the connection structure 260 may also be one of a clamping block and a clamping groove disposed at an end of the second housing 200 away from the first housing 100, and the infusion tube is provided with the other one of the clamping block and the clamping groove, when the second housing 200 of the one-way valve is connected to the infusion tube, the clamping block is clamped into the clamping groove, so that the second housing 200 of the one-way valve is connected to the infusion tube.
The utility model discloses still provide an infusion set, this infusion set includes first transfer line, second transfer line and check valve, and above-mentioned embodiment is referred to this check valve's concrete structure, because this infusion set has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer given here. Wherein, the first infusion tube is connected to the first shell 100 and communicated with the liquid passing channel 110; a second infusion tube is connected to the second housing 200 and communicates with the fluid-passing chamber 210.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A check valve, comprising:
the first shell is provided with a liquid passing channel;
the second shell is connected to the first shell, a liquid passing cavity is concavely arranged on the surface of the second shell, which is far away from the first shell, a first mounting groove communicated with the liquid passing channel is arranged on the surface of the second shell, which faces the first shell, and a liquid passing hole communicated with the bottom wall of the first mounting groove is arranged on the periphery of the bottom wall of the liquid passing cavity of the second shell; and
and the sealing element is arranged between the first shell and the second shell and at least partially embedded in the first mounting groove so as to open or close the liquid passing hole and enable the liquid passing channel to be communicated with or blocked from the liquid passing cavity.
2. The check valve as in claim 1, wherein said weep hole is circular.
3. The check valve as in claim 1, wherein said plurality of fluid-passing holes are provided and are spaced along a periphery of a bottom wall of said fluid-passing chamber.
4. The check valve as in claim 3, wherein there are three of said fluid-passing holes, and three of said fluid-passing holes are uniformly distributed along the periphery of the chamber bottom wall of said fluid-passing chamber.
5. The check valve as claimed in any one of claims 1 to 4, wherein the sealing member is provided with a through hole communicated with the liquid passing channel, the sealing member around the through hole is embedded in the first mounting groove, and the area of the liquid passing hole is larger than that of the through hole.
6. The check valve as claimed in claim 5, wherein the surface of the sealing member facing the bottom wall of the first mounting groove is provided with a first groove, the bottom wall of the first groove is provided with the through hole, the bottom wall of the first mounting groove is convexly provided with a compression leg, and the end part of the compression leg facing away from the bottom wall of the first mounting groove is inserted into the first groove.
7. The check valve as in claim 6, wherein a circumferential ring of an end surface of said compression leg facing away from said first mounting groove bottom wall is provided with a rib, a bottom wall of said first groove is recessed with a second groove, said second groove is circumferentially disposed along a circumference of said first groove bottom wall, and said rib is embedded in said second groove.
8. A one-way valve as claimed in any one of claims 1 to 4, wherein an end of the second housing remote from the first housing is provided with a connection formation for connection to a fluid line.
9. The check valve as in claim 8, wherein said connecting structure is disposed on an outer sidewall of an end of said second housing facing away from said first housing, said connecting structure being externally threaded.
10. An infusion device comprising a one-way valve as claimed in any one of claims 1 to 9, the infusion device further comprising:
the first infusion tube is connected to the first shell and communicated with the liquid passing channel; and
and the second infusion tube is connected to the second shell and is communicated with the liquid passing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031960.9U CN211327768U (en) | 2019-07-03 | 2019-07-03 | One-way valve and infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921031960.9U CN211327768U (en) | 2019-07-03 | 2019-07-03 | One-way valve and infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211327768U true CN211327768U (en) | 2020-08-25 |
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ID=72128608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921031960.9U Active CN211327768U (en) | 2019-07-03 | 2019-07-03 | One-way valve and infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211327768U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
-
2019
- 2019-07-03 CN CN201921031960.9U patent/CN211327768U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110201298A (en) * | 2019-07-03 | 2019-09-06 | 深圳安特医疗股份有限公司 | Check valve and infusion device |
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