CN203556057U - Junction valve capable of preventing blood return - Google Patents
Junction valve capable of preventing blood return Download PDFInfo
- Publication number
- CN203556057U CN203556057U CN201320762230.2U CN201320762230U CN203556057U CN 203556057 U CN203556057 U CN 203556057U CN 201320762230 U CN201320762230 U CN 201320762230U CN 203556057 U CN203556057 U CN 203556057U
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- return
- fluid
- input mechanism
- cavity
- cushion sheet
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Abstract
A junction valve capable of preventing blood return is provided with an input mechanism, an output mechanism and a backflow-preventing liquid-stopping gasket which are assembled and connected. The input mechanism is provided with a backflow-preventing liquid-stopping device, the backflow-preventing liquid-stopping device is provided with a cavity, a liquid-stopping pillar, a connecting piece and a liquid guide groove, one end of the connecting piece is fixed to the inner wall face of the cavity, the other end of the connecting piece is fixed to the liquid-stopping pillar, and an interval among the liquid-stopping pillar, the inner wall face of the cavity and the connecting piece forms the liquid guide groove. The backflow-preventing liquid-stopping gasket is provided with a first groove face used for being matched with the liquid-stopping pillar, a through hole is located in the center of the first groove face, the input mechanism and the output mechanism are fixedly assembled, and the backflow-preventing liquid-stopping gasket is arranged between the input mechanism and the output mechanism in a clamping mode. By means of the junction valve capable of preventing blood return, liquid can only flow to the output mechanism from the input mechanism, and can not flow back from the output mechanism to be discharged by the input mechanism, the phenomenon of blood return is avoided, and transfusion safety is fundamentally guaranteed.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of blood return prevention connection valve.
Background technology
Transfusion device is one of conventional medical supplies of medical field intravenous injection, is usually used in clinically disease treatment and severe disease and rescues.
In prior art, transfusion device is comprised of dropping funnel, speed regulator, conduit and puncture needle conventionally, and the liquid in medicated bag enters dropping funnel, by conduit, is directly delivered to vein blood vessel.
In infusion process, if deal with improperly just in case occur blood back phenomenon, consequence will be very serious.Blood back phenomenon not only can cause conduit due to air embolism, cannot continue transfusion, even can cause blood coagulation become clot and human body is damaged, and the serious problems such as nosocomial infection, septicemia, in treatment clinical course, how processing this problem and bringing adverse consequences is a stubborn problem always.
Therefore,, for prior art deficiency, provide a kind of blood return prevention connection valve very necessary to overcome prior art deficiency.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of blood return prevention connection valve is provided, and this blood return prevention connection valve can be avoided the generation of blood back phenomenon in infusion process, from ensureing in essence the generation of avoiding blood back phenomenon.
Above-mentioned purpose of the present utility model realizes by following technical measures.
A kind of blood return prevention connection valve, the input mechanism, output mechanism and the anti-return that are provided with assembly connection stop fluid cushion sheet;
Described input mechanism is provided with anti-return and stops liquid device, and described anti-return stops liquid device to be provided with cavity, to stop fluid column, connector and intake chute; Described cavity be arranged at described input mechanism first flow liquid outlet position and with described first flow conducting, the internal face of described cavity is fixed in described connector one end, the described connector other end is fixed on described only fluid column, and the gap forming between the internal face of described only fluid column, described cavity and described connector forms described intake chute;
Described anti-return stops fluid cushion sheet and is provided with the first groove face for matching with described fluid stopping post, and described fluid stopping post is assemblied in described the first groove face, and the through hole that described anti-return stops the setting of fluid cushion sheet is positioned at the center of described the first groove face;
Described anti-return stops fluid cushion sheet, and being simultaneously assemblied in described anti-return stops liquid device, described anti-return stops fluid cushion sheet another side and is assemblied in described output mechanism, and described input mechanism and described output mechanism are fixed assembling and described anti-return is stopped to fluid cushion sheet and be located between described input mechanism and described output mechanism.
Above-mentioned only fluid column is set to cylindrical structure.
The interior diameter of above-mentioned cavity is greater than the interior diameter of described first flow, and the described only diameter of fluid column is less than the interior diameter of described first flow.
Preferably, above-mentioned connector is set to more than two, and described connector is uniformly distributed in the described only outside of fluid column.
Preferably, above-mentioned connector is set to three.
Above-mentioned anti-return stops liquid device and is also provided with diversion column, and described diversion column is fixedly installed on the internal face of described inner chamber, and described diversion column is between two adjacent connectors.
The above-mentioned only diameter of fluid column is greater than the diameter of described through hole.
Above-mentioned anti-return stops fluid cushion sheet and is provided with the second groove face for matching with described cavity, and described cavity assembles mutually with described the second groove face.
Above-mentioned the second groove face is set to concave surface.
Above-mentioned input mechanism is provided with department of assembly, and described department of assembly is provided with for fixing with described output mechanism the outer cornice, the first boss and the interior cornice that assemble, and described outer cornice and described interior cornice are individually fixed in outside and the inner side of described the first boss;
Described output mechanism be provided with for outer lug boss, the first groove and the inner convex platform of described input mechanism assembling, described outer lug boss and described inner convex platform are individually fixed in outside and the inner side of described the first groove;
Described the first boss is fixedly assemblied in described the first groove, described outer cornice and described outer lug boss butt, described interior cornice and described inner convex platform butt;
The internal diameter of described inner convex platform equates with the external diameter that described anti-return stops fluid cushion sheet.
Blood return prevention connection valve of the present utility model, the input mechanism, output mechanism and the anti-return that are provided with assembly connection stop fluid cushion sheet; Described input mechanism is provided with anti-return and stops liquid device, and described anti-return stops liquid device to be provided with cavity, to stop fluid column, connector and intake chute; Described cavity be arranged at described input mechanism first flow liquid outlet position and with described first flow conducting, the internal face of described cavity is fixed in described connector one end, the described connector other end is fixed on described only fluid column, and the gap forming between the internal face of described only fluid column, described cavity and described connector forms described intake chute; Described anti-return stops fluid cushion sheet and is provided with the first groove face for matching with described fluid stopping post, and described fluid stopping post is assemblied in described the first groove face, and the through hole that described anti-return stops the setting of fluid cushion sheet is positioned at the center of described the first groove face; Described anti-return stops fluid cushion sheet, and being simultaneously assemblied in described anti-return stops liquid device, described anti-return stops fluid cushion sheet another side and is assemblied in described output mechanism, and described input mechanism and described output mechanism are fixed assembling and described anti-return is stopped to fluid cushion sheet and be located between described input mechanism and described output mechanism.By this blood return prevention connection valve, liquid can only flow out to output mechanism from input mechanism, and can not flow backwards by output mechanism, by input mechanism, is discharged, and can avoid blood back phenomenon to occur, from ensureing in essence infusion safety.
Accompanying drawing explanation
The utility model is described in further detail to utilize accompanying drawing, but content in accompanying drawing does not form any restriction of the present utility model.
Fig. 1 is the structural representation of a kind of blood return prevention connection valve of the present utility model.
Fig. 2 is the decomposing schematic representation of a kind of blood return prevention connection valve of the present utility model.
Fig. 3 is the upward view of the input mechanism of a kind of blood return prevention connection valve of the present utility model.
Fig. 4 is the top view of a kind of blood return prevention connection valve of the present utility model.
Fig. 5 is Fig. 4 " A-A " cutaway view.
Fig. 6 is the decomposing schematic representation of Fig. 5.
In Fig. 1 to Fig. 6, include:
Anti-return stop fluid cushion sheet 200,
The first groove face 210, through hole 220, the second groove face 230,
The specific embodiment
With the following Examples this utility model is further described.
A kind of blood return prevention connection valve, as shown in Figures 1 to 6, the input mechanism 100, output mechanism 300 and the anti-return that are provided with assembly connection stop fluid cushion sheet 200.Input mechanism 100 is connected with liquid-transport pipe-line, and output mechanism 300 is connected with Shandong taper joint conventionally, thereby inputs to vein blood vessel for medicinal liquid is delivered to syringe needle.
Anti-return stops fluid cushion sheet 200 and is provided with the first groove face 210 for matching with fluid stopping post, and fluid stopping post is assemblied in the first groove face 210, and anti-return stops through hole 220 that fluid cushion sheet 200 arranges and be positioned at the center of the first groove face 210.
Anti-return stops fluid cushion sheet 200, and being simultaneously assemblied in anti-return stops liquid device, anti-return stops fluid cushion sheet 200 another sides and is assemblied in output mechanism 300, and input mechanism 100 and output mechanism 300 are fixed assembling and anti-return is stopped to fluid cushion sheet 200 and be located between input mechanism 100 and output mechanism 300.
Anti-return stops fluid cushion sheet 200 and is generally the soft thin slice of silica gel piece or sheet or other material.When normal infusion, liquid flow to cavity 120 positions by first flow 110, and discharge by intake chute 150, now, during due to transfusion, medicine bottle or medicated bag are suspended from a high position conventionally, due to the effect of pressure differential, medicinal liquid will stop fluid cushion sheet 200 and produces pressure stopping with anti-return anti-return that liquid device matches, thereby make the liquid at intake chute 150 places to stop gap between fluid cushion sheet 200 by fluid column 130 only and anti-return, flows out and enters anti-return and stop the through hole 220 inflow output mechanisms 300 that fluid cushion sheet 200 arranges.Once occur blood backflow because blood pressure is greater than the pressure of medicinal liquid, now, the pressure of blood end will compress anti-return and stop fluid cushion sheet 200, make anti-return stop the first groove 320 of fluid cushion sheet 200 and stop fluid column 130 close fit, the through hole 220 that only fluid column 130 stops fluid cushion sheet 200 by anti-return closely seals, and medicinal liquid cannot input to input mechanism 100.Thereby can avoid the generation of blood backflow phenomenon, ensure infusion safety.
Concrete, only fluid column 130 is set to cylindrical structure, has feature simple in structure, easy to prepare.
Preferably, only the diameter of fluid column 130 is greater than the diameter of through hole 220, can guarantee that liquid flows into output mechanism 300 smoothly when transfusion state, and once occur blood back phenomenon, the effect of pressure makes only fluid column 130 that through hole 220 is firmly sealed, and avoids the possibility that needs backflow phenomenon to occur.
The interior diameter of cavity 120 is greater than the interior diameter of first flow 110, and only the diameter of fluid column 130 is less than the interior diameter of first flow 110.This setting is convenient to medicinal liquid and is entered output mechanism 300 by input mechanism 100, and anti-Hemostatic Oral Liquid is back to input mechanism 100 from output mechanism 300.
In the present embodiment, connector 140 is set to three, intake chute 150 and is also three, and connector 140 is uniformly distributed in the only outside of fluid column 130.It should be noted that, the quantity of connector 140 is not limited to the situation of the present embodiment, also can arrange flexibly according to actual needs.Conventionally with connector 140, be set to more than two.
For effective transfusion, anti-return stops liquid device and is also provided with diversion column 160, and diversion column 160 is fixedly installed on the internal face of inner chamber, and diversion column 160 is between two adjacent connectors 140, and diversion column 160 can effectively guide medicinal liquid.
In the present embodiment, anti-return stops fluid cushion sheet 200 and is provided with the second groove face 230 for matching with cavity 120, and cavity 120 assembles mutually with the second groove face 230.During transfusion, medicinal liquid enters through hole 220 by the space between the second groove face 230 and cavity 120, and once occur blood backflow phenomenon, the second groove face 230 will closely cooperate in cavity 120, and only fluid column 130 seals through hole 220, and backflow phenomenon is from being overcome in essence.
Preferably, the second groove face 230 is set to concave surface, so that effectively transfusion under transfusion state.
In the present embodiment, assembling in the following way between input mechanism 100 and output mechanism 300:
The first boss 170 is fixedly assemblied in the first groove 320, outer cornice 170 and outer lug boss 310 butts, interior cornice 190 and inner convex platform 330 butts.Anti-return stops fluid cushion sheet 200 and is decided to be the position between inner convex platform 330 and cavity 120.
It should be noted that, the mode that is mounted with in the present embodiment between input mechanism 100 and output mechanism 300 is just wherein a kind of, is not limited to the situation of the present embodiment in reality, also can be set to other as buckle mode etc.
A kind of blood return prevention connection valve of the present embodiment, its use procedure is such, and medicinal liquid carrier pipe is connected with input mechanism 100, and output mechanism 300 is connected with syringe needle connection tube.When carrying out medicinal liquid while carrying, because the pressure of medicinal liquid is greater than the pressure of blood vessel, medicinal liquid is delivered to cavity 120 parts by first flow 110 and is delivered to intake chute 150.Because fluid pressure is greater than the pressure of vein blood vessel, medicinal liquid stops fluid cushion sheet 200 by extruding anti-return and makes anti-return stop the first groove face 210 of fluid cushion sheet 200 and only between fluid column 130, produce certain interval, medicinal liquid enters through hole 220 by gap and is delivered to output mechanism 300, by output mechanism 300, is delivered to vein blood vessel.If just in case while occurring that medicinal liquid is carried situation complete and that do not process in time, the pressure of the about other end of endovascular pressure, the effect of blood pressure will make anti-return stop fluid cushion sheet 200 and closely be adjacent to cavity 120, while through hole 220 is stopped fluid column 130 and is sealed, blood cannot enter input mechanism 100, therefore can effectively avoid the generation of blood backflow phenomenon, guarantee infusion safety.
In addition, blood return prevention connection valve of the present utility model also has feature simple in structure, cost is low, easy to use.
Finally should be noted that; above embodiment is the restriction for the technical solution of the utility model is described but not to this utility model protection domain only; although this utility model is explained in detail with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not depart from essence and the scope of technical solutions of the utility model.
Claims (10)
1. a blood return prevention connection valve, is characterized in that: the input mechanism, output mechanism and the anti-return that are provided with assembly connection stop fluid cushion sheet;
Described input mechanism is provided with anti-return and stops liquid device, and described anti-return stops liquid device to be provided with cavity, to stop fluid column, connector and intake chute; Described cavity be arranged at described input mechanism first flow liquid outlet position and with described first flow conducting, the internal face of described cavity is fixed in described connector one end, the described connector other end is fixed on described only fluid column, and the gap forming between the internal face of described only fluid column, described cavity and described connector forms described intake chute;
Described anti-return stops fluid cushion sheet and is provided with the first groove face for matching with described fluid stopping post, described fluid stopping post and described the first groove face assembling, and the through hole that described anti-return stops the setting of fluid cushion sheet is positioned at the center of described the first groove face;
Described anti-return stops fluid cushion sheet, and being simultaneously assemblied in described anti-return stops liquid device, described anti-return stops fluid cushion sheet another side and is assemblied in described output mechanism, and described input mechanism and described output mechanism are fixed assembling and described anti-return is stopped to fluid cushion sheet and be located between described input mechanism and described output mechanism.
2. blood return prevention connection valve according to claim 1, is characterized in that: described only fluid column is set to cylindrical structure.
3. blood return prevention connection valve according to claim 2, is characterized in that: the interior diameter of described cavity is greater than the interior diameter of described first flow, and the described only diameter of fluid column is less than the interior diameter of described first flow.
4. blood return prevention connection valve according to claim 3, is characterized in that: described connector is set to more than two, and described connector is uniformly distributed in the described only outside of fluid column.
5. blood return prevention connection valve according to claim 4, is characterized in that: described connector is set to three.
6. blood return prevention connection valve according to claim 4, is characterized in that: described anti-return stops liquid device and is also provided with diversion column, and described diversion column is fixedly installed on the internal face of described inner chamber, and described diversion column is between two adjacent connectors.
7. according to the blood return prevention connection valve described in claim 1 to 6 any one, it is characterized in that: the described only diameter of fluid column is greater than the diameter of described through hole.
8. blood return prevention connection valve according to claim 7, is characterized in that: described anti-return stops fluid cushion sheet and is provided with the second groove face for matching with described cavity, and described cavity assembles mutually with described the second groove face.
9. blood return prevention connection valve according to claim 8, is characterized in that: described the second groove face is set to concave surface.
10. blood return prevention connection valve according to claim 1, it is characterized in that: described input mechanism is provided with department of assembly, described department of assembly is provided with for fixing with described output mechanism the outer cornice, the first boss and the interior cornice that assemble, and described outer cornice and described interior cornice are individually fixed in outside and the inner side of described the first boss;
Described output mechanism be provided with for outer lug boss, the first groove and the inner convex platform of described input mechanism assembling, described outer lug boss and described inner convex platform are individually fixed in outside and the inner side of described the first groove;
Described the first boss is fixedly assemblied in described the first groove, described outer cornice and described outer lug boss butt, described interior cornice and described inner convex platform butt;
The internal diameter of described inner convex platform equates with the external diameter that described anti-return stops fluid cushion sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762230.2U CN203556057U (en) | 2013-11-28 | 2013-11-28 | Junction valve capable of preventing blood return |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320762230.2U CN203556057U (en) | 2013-11-28 | 2013-11-28 | Junction valve capable of preventing blood return |
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| Publication Number | Publication Date |
|---|---|
| CN203556057U true CN203556057U (en) | 2014-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320762230.2U Expired - Fee Related CN203556057U (en) | 2013-11-28 | 2013-11-28 | Junction valve capable of preventing blood return |
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| Country | Link |
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| CN (1) | CN203556057U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106880887A (en) * | 2017-03-29 | 2017-06-23 | 江苏人先医疗科技有限公司 | Preventing gravity fluid infusion structure and its application method |
| CN109310856A (en) * | 2016-06-15 | 2019-02-05 | 苏尔莫迪克斯公司 | Bleeding seal device with contractile ring |
| US11730943B2 (en) | 2016-12-15 | 2023-08-22 | Surmodics, Inc. | Low-friction sealing devices |
-
2013
- 2013-11-28 CN CN201320762230.2U patent/CN203556057U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109310856A (en) * | 2016-06-15 | 2019-02-05 | 苏尔莫迪克斯公司 | Bleeding seal device with contractile ring |
| CN109310856B (en) * | 2016-06-15 | 2021-09-07 | 苏尔莫迪克斯公司 | Hemostatic sealing device with shrink ring |
| US11730943B2 (en) | 2016-12-15 | 2023-08-22 | Surmodics, Inc. | Low-friction sealing devices |
| CN106880887A (en) * | 2017-03-29 | 2017-06-23 | 江苏人先医疗科技有限公司 | Preventing gravity fluid infusion structure and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 Termination date: 20161128 |