CN213347450U

CN213347450U - Female one-way valve and infusion device

Info

Publication number: CN213347450U
Application number: CN202020823905.XU
Authority: CN
Inventors: 王五星; 于敬军; 王博森
Original assignee: Guangdong Ante Medical Co ltd
Current assignee: Guangdong Ante Medical Co ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-06-04
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a female one-way valve and a transfusion device, wherein the female one-way valve comprises a connecting joint, a connecting main body, a gasket and a guide pipe, the connecting joint is provided with external threads for being in threaded connection with the connecting joint with male threads, and a first liquid passing channel is arranged in the connecting joint; the connecting body is provided with a second liquid passing channel and is connected with the connecting joint so as to communicate the first liquid passing channel with the second liquid passing channel; the gasket is arranged in the connecting joint and is positioned between the first liquid passing channel of the connecting joint and the second liquid passing channel of the connecting main body; one end of the guide pipe is connected with the infusion pipeline, and the other end of the guide pipe is inserted into and contained in one end of the connecting main body, which deviates from the connecting joint, so that the guide pipe is communicated with the second liquid passing channel, and the connecting main body can rotate relative to the guide pipe. The technical proposal of the utility model aims at solving the problem that the transfusion pipeline can be coiled when the traditional female one-way valve is connected with the connecting joint with the male thread.

Description

Female one-way valve and infusion device

Technical Field

The utility model relates to the technical field of medical treatment, in particular to female check valve and infusion set who uses this female check valve.

Background

In the infusion process, infusion set's female check valve and the public end of cylinder or all the other connecting pipes that have the public end joint are connected through screw-thread fit, however in medical personnel's operation process, when being connected female check valve's one end and transfer line earlier, the other end of female check valve and the public end of cylinder or all the other connecting pipes threaded connection that have the public end joint again, when leading to female check valve to connect, the condition that crooked and convolute appear in the infusion pipeline that can make be connected with female check valve, influence infusion set's use.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a check valve, aims at improving the problem that the infusion pipeline can be coiled when traditional female check valve is connected with the connector screw thread that has the male end screw thread.

In order to achieve the above object, the utility model provides a female check valve is applied to infusion set, include:

the connecting joint is provided with external threads and is used for being in threaded connection with the connecting joint with male end threads, and a first liquid passing channel is arranged in the connecting joint;

the connecting body is provided with a second liquid passing channel and is connected to the connecting joint so as to enable the first liquid passing channel to be communicated with the second liquid passing channel;

the gasket is arranged in the connecting joint and is positioned between the first liquid passing channel of the connecting joint and the second liquid passing channel of the connecting main body, so that liquid is blocked to reversely flow into the first liquid passing channel from the second liquid passing channel; and

and one end of the draft tube is connected with the infusion pipeline, the other end of the draft tube is inserted into and accommodated at one end of the connecting main body, which is far away from the connecting joint, so that the draft tube is communicated with the second liquid passing channel, and the connecting main body can rotate relative to the draft tube.

In an embodiment of the present application, one of the connecting body and the flow guide tube is provided with an annular groove, and the other one of the connecting body and the flow guide tube is provided with an annular clamping block, and the annular clamping block is clamped in the annular groove and can rotate in the annular groove.

In an embodiment of the application, a limit groove is formed at one end of the connecting body, which is away from the connecting joint, an opening of the limit groove is away from the connecting joint, a limit protrusion is convexly arranged on a side wall of the limit groove, and the annular clamping groove is formed between the limit protrusion and a bottom wall of the limit groove;

the annular clamping block is formed on the outer wall of the flow guide pipe, at least part of the flow guide pipe is inserted into the limiting groove, and the annular clamping block is located in the annular clamping groove.

In an embodiment of the application, a guiding inclined plane is formed on one side of the annular clamping block in the clamping direction, and the guiding inclined plane is used for guiding the annular clamping block to be inserted into the annular clamping groove.

In an embodiment of this application, the connecting body includes the inserted part and the connecting portion that are connected, the inserted part with the connecting portion cooperation forms the liquid passageway is crossed to the second, the inserted part insert establish connect in the attach fitting, the inserted part deviates from the feed liquor hole has been seted up to the one end of connecting portion, the feed liquor hole with the liquid passageway intercommunication is crossed to the second, connecting portion with honeycomb duct connection.

In an embodiment of the present application, a sealing ring is interposed between the connecting portion and the flow guide pipe.

In an embodiment of the application, the connecting body further includes an abutting portion, and the abutting portion is connected to an end of the insertion portion away from the connecting portion, so as to abut against the gasket.

In an embodiment of this application, butt portion includes a plurality of protruding pieces and butt pointed end, the butt pointed end is located the insertion part deviates from the surface center of connecting portion, and with feed liquor hole dislocation set, a plurality of protruding piece encircles the most advanced interval of butt set up in the insertion part deviates from the surface of connecting portion.

In an embodiment of the present application, the outer wall of the connecting body is formed with a second anti-slip rib;

and/or a first anti-skid rib is formed on the outer wall of the connecting joint.

The utility model also provides an infusion set, including female check valve, female check valve includes: the connecting joint is provided with external threads and is used for being in threaded connection with the connecting joint with male end threads, and a first liquid passing channel is arranged in the connecting joint;

and one end of the draft tube is connected with the infusion pipeline, and the other end of the draft tube is inserted into and contained at one end of the connecting main body, which is far away from the connecting joint, so that the draft tube is communicated with the second liquid passing channel, and the draft tube can rotate in the connecting main body.

The utility model discloses technical scheme's female check valve is including the attach fitting that is equipped with first liquid passageway and the main part of being connected that is equipped with the second liquid passageway, and the attach fitting is equipped with the external screw thread to be used for having the attach fitting threaded connection of public end screw thread. The connecting body is connected to the connecting joint so that the first liquid passing channel and the second liquid passing channel are communicated, and meanwhile, the gasket is arranged in the connecting joint, so that liquid can be prevented from reversely flowing into the first liquid passing channel from the second liquid passing channel. In addition, the female one-way valve is also provided with a flow guide pipe, one end of the flow guide pipe is connected with the infusion pipeline, the other end of the flow guide pipe is inserted into and accommodated at one end of the connecting main body, which is far away from the connecting joint, so that the flow guide pipe is communicated with the second liquid passing channel, and the connecting main body can rotate relative to the flow guide pipe. So after female check valve's whole cooperation is connected, medical personnel are connected honeycomb duct one end and infusion pipeline, again with attach fitting and the attach fitting threaded connection who has the male end screw thread, and because the connecting body can rotate for the honeycomb duct, consequently attach fitting can not influence honeycomb duct and honeycomb duct connection's infusion pipeline rotating the in-process operation, avoid taking place the coiling phenomenon with honeycomb duct connection's infusion pipeline, avoid causing the influence to the infusion, improve female check valve's usability and reliability.

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 an assembly structure of an embodiment of a female check valve of the present invention;

FIG. 2 is a cross-sectional view of an assembled structure of the female check valve of FIG. 1;

FIG. 3 is an exploded view of an embodiment of the female check valve of the present invention;

fig. 4 is a schematic structural view of the connection body of the female check valve of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Female one-way valve	231	Limiting groove
10	Connecting joint	232	Spacing protrusion
				11	The first liquid passing channel	24	Abutting part
12	First anti-skid rib	241	Abutting tip
				13	Mounting groove	242	Convex block
14	Liquid outlet	25	Second anti-skid rib
				20	Connecting body	30	Gasket
21	The second liquid passing channel	40	Flow guide pipe
				22	Insertion part	41	Annular clamping block
221	Liquid inlet hole	411	Guide slope
				23	Connecting part	50	Sealing ring

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, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications 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 indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly 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 female check valve 100 is applied to infusion set.

In the embodiment of the present invention, please refer to fig. 1 to 4 in combination, the female check valve 100 includes a connection joint 10, a connection body 20, a gasket 30 and a flow guide pipe 40, wherein the connection joint 10 is provided with an external thread for being in threaded connection with the connection joint 10 having a male end thread, and a first liquid passing channel 11 is provided in the connection joint 10; the connecting body 20 is provided with a second liquid passing channel 21, and the connecting body 20 is connected to the connecting joint 10 so as to communicate the first liquid passing channel 11 with the second liquid passing channel 21; the gasket 30 is arranged in the connecting joint 10 and is positioned between the first liquid passing channel 11 of the connecting joint 10 and the second liquid passing channel 21 of the connecting body 20, so as to block liquid from reversely flowing into the first liquid passing channel 11 from the second liquid passing channel 21; one end of the guide tube 40 is connected to the infusion pipeline, and the other end of the guide tube 40 is inserted into and received at the end of the connecting body 20 away from the connecting joint 10, so that the guide tube 40 is communicated with the second liquid passing channel 21, and the connecting body 20 can rotate relative to the guide tube 40.

Wherein, attach fitting 10 and connecting body 20 accessible buckle are connected or modes such as interference fit are connected to make first liquid passageway 11 and the second of crossing pass liquid passageway 21 intercommunication, and gasket 30 locates in attach fitting 10, specifically can be provided with mounting groove 13 in attach fitting 10 recess towards one side of connecting body 20, and the diapire of attach fitting 10 is formed with liquid outlet 14, and this liquid outlet 14 communicates with first liquid passageway 11 of crossing. Wherein gasket 30 inlays and locates in mounting groove 13, and the lateral wall of gasket 30 and the lateral wall of mounting groove 13 form the liquid clearance, thereby it is comparatively convenient when making user's installation gasket 30, and the lateral wall of gasket 30 and the lateral wall of mounting groove 13 form the liquid clearance, consequently when liquid flows in by the one end that deviates from liquid outlet 14 of attach fitting 10, gasket 30 breaks away from the liquid outlet 14 of attach fitting 10 because the pressure of liquid, so that liquid flows to the second that crosses liquid clearance recirculation to attach fitting 20 behind liquid outlet 14 and crosses liquid passageway 21, and when liquid flows to attach fitting 10 from attach fitting 20, gasket 30 can be because the pressure shutoff liquid outlet 14 of liquid, in order to avoid liquid to flow against the current back in attach fitting 10. In addition, a communication hole can be formed in the gasket 30, the communication hole can simultaneously penetrate through the end faces of the gasket 30 facing the connecting joint 10 and the connecting main body 20, and the communication hole is not arranged corresponding to the liquid outlet 14 of the connecting joint 10, so that when liquid flows in from the connecting joint 10, the gap between the gasket 30 and the connecting joint 10 is increased, and the connecting joint 10 is communicated with the liquid passing channel of the connecting main body 20 through the communication hole; when liquid flows in from the liquid passage of the connecting body 20, the gasket 30 abuts against the connecting joint 10 and seals the liquid outlet 14 of the connecting joint 10. Meanwhile, the gasket 30 is arranged, so that a starting pressure value exists in the female one-way valve 100, and only when the pressure value of liquid reaches the starting pressure value, the female one-way valve 100 is opened to enable the liquid to circulate, so that the phenomenon that the female one-way valve 100 connected with an infusion tube drips in a static process can be prevented. Namely, the abutting action of the gasket 30 includes the presence of the activation pressure when the fluid is flowing in the forward direction and also includes the reverse prevention of the backflow of the fluid. It is understood that the gasket 30 may be an elastic body having elasticity, such as rubber or silicone.

The utility model discloses technical scheme's female check valve 100 is including the attach fitting 10 that is equipped with first liquid passageway 11 and the attach fitting 20 that is equipped with second liquid passageway 21, attach fitting 10 is equipped with the external screw thread, so as to be used for with the attach fitting threaded connection who has the public end screw thread, attach fitting 20 connects in attach fitting 10, so that first liquid passageway 11 and second of crossing pass liquid passageway 21 intercommunication, still be equipped with gasket 30 simultaneously and be located attach fitting 10, can prevent that liquid from passing liquid passageway 21 reverse flow by the second and advancing first liquid passageway 11 of crossing. In addition, the female check valve 100 is further provided with a delivery tube 40, one end of the delivery tube 40 is connected to the infusion pipeline, and the other end of the delivery tube 40 is inserted and accommodated at one end of the connecting body 20 away from the connecting joint 10, so that the delivery tube 40 is communicated with the second liquid passing channel 21, and the connecting body 20 can rotate relative to the delivery tube 40. So after female check valve 100's whole cooperation is connected, medical personnel are connected honeycomb duct 40 one end and infusion pipeline, again with attach fitting 10 and the attach fitting threaded connection who has the male end screw thread, and because connector 20 can rotate for honeycomb duct 40, consequently attach fitting 10 can not influence the infusion pipeline that honeycomb duct 40 and honeycomb duct 40 are connected rotating the process operation, avoid taking place the coiling phenomenon with the infusion pipeline that honeycomb duct 40 is connected, avoid causing the influence to the infusion, improve female check valve 100's usability and reliability.

In an embodiment of the present application, referring to fig. 1 to 4, one of the connecting body 20 and the delivery tube 40 is provided with an annular groove, and the other is provided with an annular block 41, and the annular block 41 is clamped in the annular groove and can rotate in the annular groove. Specifically, the connecting body 20 and the guide tube 40 are clamped in the annular clamping groove through the annular clamping block 41, so that the connecting body 20 and the guide tube 40 can rotate relatively on the one hand, and the connecting body 20 and the guide tube 40 can be prevented from moving relatively in the axial direction on the other hand, thereby ensuring a good connecting effect of the connecting body 20 and the guide tube 40. It can be understood that, by the annular engaging block 41 being engaged with the annular engaging groove, the assembly of the connecting body 20 and the delivery tube 40 is facilitated. In an embodiment of the present application, an annular clamping groove may be formed in the connecting body 20, an annular clamping block is formed on the outer wall of the flow guide tube, and the annular clamping groove is clamped in the annular clamping block 41, so that the connecting body 20 can rotate relative to the flow guide tube 40, and therefore when a user threadedly connects the connecting body 20 with another connection joint 10 having male threads, the flow guide tube 40 does not synchronously rotate to avoid winding.

Furthermore, a limiting groove 231 is formed at one end of the connecting body 20, which is away from the connecting joint 10, an opening of the limiting groove 231 is away from the connecting joint 10, a limiting protrusion 232 is convexly arranged on a side wall of the limiting groove 231, and the annular clamping groove is formed between the limiting protrusion 232 and the bottom wall of the limiting groove 231; the annular fixture block 41 is formed on the outer wall of the guide tube 40, and at least part of the guide tube 40 is inserted into the limiting groove 231, so that the annular fixture block 41 is located in the annular fixture groove. Specifically, in order to avoid that the opening of the annular clamping groove on the draft tube 40 affects the volume of the draft tube 40 to be too small and causes the structure instability, the annular clamping groove is formed on the connecting body 20, and the annular clamping block 41 is formed on the outer wall of the draft tube 40 to ensure the stability of the whole structure of the draft tube 40. It should be noted that the limiting protrusions 232 may be a continuous structure and disposed around the inner wall of the connecting body 20, or a plurality of limiting protrusions 232 may be arranged at intervals to fit around the inner wall of the connecting body 20, which may be selected by those skilled in the art.

Further, a guiding inclined surface 411 is formed on one side of the annular latch 41 along the snapping-in direction, and the guiding inclined surface 411 is used for guiding the annular latch 41 to be inserted into the annular latch slot. In order to make medical personnel comparatively convenient when connection honeycomb duct 40 and connecting body 20 are connected in the operation, thereby be formed with guide inclined plane 411 along one side of card income direction at annular fixture block 41, so when inserting honeycomb duct 40 in connecting body 20 in-process, annular fixture block 41 can extrude with spacing protruding 232 butt earlier, and through the setting of guide inclined plane 411, so that annular fixture block 41 takes place to deform along deviating from the card income direction, make annular fixture block 41 block go into in the annular slot relatively easily.

In an embodiment of the present application, referring to fig. 1 to 4, the connecting body 20 includes an insertion portion 22 and a connecting portion 23 that are connected, the insertion portion 22 and the connecting portion 23 cooperate to form the second liquid passing channel 21, the insertion portion 22 is inserted and connected in the connecting joint 10, the insertion portion 22 deviates from a liquid inlet hole 221 has been seted up to the one end of the connecting portion 23, the liquid inlet hole 221 with the second liquid passing channel 21 communicates, the connecting portion 23 with the honeycomb duct 40 is connected. Wherein insert portion 22 and connecting portion 23 can be structure as an organic whole, if can be through integrative injection moulding, not only saved the process of installation, improved the joint strength of insert portion 22 and connecting portion 23 simultaneously, it should be said that the quantity of feed liquor hole 221 can be a plurality ofly to improve the efficiency of feed liquor.

Further, a seal ring 50 is interposed between the connection portion 23 and the draft tube 40. Specifically, by interposing the sealing ring 50 between the connecting portion 23 and the fluid guide tube 40, the liquid flowing out of the fluid guide tube 40 can be prevented from reversely flowing out through the gap between the connecting portion 23 and the fluid guide tube 40, and the liquid can be ensured to flow toward the fluid guide tube 40 along a specific path and flow out of the fluid guide tube 40.

Optionally, the connecting body 20 further comprises an abutting portion 24, and the abutting portion 24 is connected to an end of the inserting portion 22 away from the connecting portion 23, so as to abut against the gasket 30. Specifically, in order to avoid the gasket 30 from being separated from the liquid outlet 14 by an excessively large distance, the abutting portion 24 is connected to one end of the insertion portion 22 of the connecting body 20 away from the connecting portion 23, so as to abut against the gasket 30 when the gasket 30 is separated from the liquid outlet 14 of the connecting joint 10, so as to limit the moving distance of the gasket 30, avoid the gasket 30 from being moved by an excessively large distance and being incapable of achieving a good blocking effect, and further guarantee the stability and usability of the overall structure of the female check valve 100.

Further, the abutting portion 24 includes a plurality of protruding blocks 242 and an abutting tip 241, the abutting tip 241 is located at the center of the surface of the inserting portion 22 departing from the connecting portion 23, and is disposed in a staggered manner with the liquid inlet hole 221, and the plurality of protruding blocks 242 are disposed on the surface of the inserting portion 22 departing from the connecting portion 23 at intervals around the abutting tip 241. Specifically, the central position of the gasket 30 can be abutted by the abutting tip 241, so that the gasket 30 is not easy to incline when being abutted, and meanwhile, the plurality of protruding blocks 242 are arranged to prevent the gasket 30 from being deformed and blocking the liquid inlet hole 221, so that the stability and usability of the overall structure of the female check valve 100 are further improved.

In an embodiment of the present application, the outer wall of the attachment fitting 10 described with reference to fig. 2 and 3 is formed with a first cleat 12. By forming the first anti-slip rib 12 on the outer wall of the joint 10, the problem of slipping between the user's hand and the outer wall of the joint 10 can be improved when the user rotates the joint 10 to connect the joint having the male thread. Specifically, the first anti-slip rib 12 may be in an elongated shape, and the length extending direction of the first anti-slip rib 12 may also be parallel to the axial direction of the connection joint 10. The first anti-slip ribs 12 may be provided with a plurality of first anti-slip ribs 12 at intervals, and the plurality of first anti-slip ribs 12 are distributed at intervals along the axial direction of the connector 10.

Optionally, the outer wall of the connecting body 20 is formed with a second anti-slip rib 25; by forming the second anti-slip rib 25 on the outer wall of the connecting body 20, the problem of slipping between the hand of the user and the outer wall of the connecting body 20 can be improved when the user rotates the connecting body 20 to connect the connector with the male screw. Specifically, the second anti-slip rib 25 may have an elongated shape, and the length extending direction of the second anti-slip rib 25 may also be parallel to the axial direction of the connecting body 20. The second anti-slip ribs 25 may be provided with a plurality of ribs at intervals, and the plurality of second anti-slip ribs 25 are distributed at intervals along the axial direction of the connecting body 20.

The utility model discloses still provide an infusion set, this infusion set includes female check valve 100, and above-mentioned embodiment is referred to this female check valve 100's specific 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.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A female one-way valve applied to an infusion device, comprising:

2. The female one-way valve as claimed in claim 1, wherein one of said connecting body and said flow guide tube is provided with an annular groove, and the other is provided with an annular block, and said annular block is clamped in said annular groove and can rotate in said annular groove.

3. The female one-way valve according to claim 2, wherein a limiting groove is formed at one end of the connecting body, which faces away from the connecting joint, an opening of the limiting groove faces away from the connecting joint, a limiting protrusion is convexly arranged on a side wall of the limiting groove, and the annular clamping groove is formed between the limiting protrusion and a bottom wall of the limiting groove;

4. The female one-way valve as claimed in claim 3, wherein a guiding inclined surface is formed at one side of the annular latch in the snap-in direction, and the guiding inclined surface is used for guiding the annular latch to be inserted into the annular slot.

5. The female one-way valve according to claim 1, wherein the connecting body comprises an insertion portion and a connecting portion connected with each other, the insertion portion and the connecting portion cooperate to form the second liquid passing channel, the insertion portion is inserted into the connecting joint, a liquid inlet hole is formed in one end of the insertion portion, which is away from the connecting portion, the liquid inlet hole is communicated with the second liquid passing channel, and the connecting portion is connected with the flow guide pipe.

6. The female one-way valve as claimed in claim 5, wherein a sealing ring is interposed between the connecting portion and the flow guide tube.

7. The female one-way valve as claimed in claim 5, wherein said connecting body further comprises an abutment portion connected to an end of said insertion portion facing away from said connecting portion for abutting against said spacer.

8. The female one-way valve as claimed in claim 7, wherein said abutment portion comprises a plurality of protrusions and an abutment tip, said abutment tip is located at the center of the surface of said insertion portion facing away from said connection portion and is disposed to be offset from said liquid inlet hole, and said plurality of protrusions are disposed at intervals around said abutment tip on the surface of said insertion portion facing away from said connection portion.

9. The female one-way valve according to any one of claims 1 to 8, wherein the outer wall of said connection fitting is formed with a first anti-slip rib;

and/or a second anti-skid rib is formed on the outer wall of the connecting main body.

10. An infusion device comprising a female one-way valve as claimed in any one of claims 1 to 9.