CN208448296U - One kind preventing unexpected backflow device and its safe infusion device - Google Patents
One kind preventing unexpected backflow device and its safe infusion device Download PDFInfo
- Publication number
- CN208448296U CN208448296U CN201721862759.6U CN201721862759U CN208448296U CN 208448296 U CN208448296 U CN 208448296U CN 201721862759 U CN201721862759 U CN 201721862759U CN 208448296 U CN208448296 U CN 208448296U
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- CN
- China
- Prior art keywords
- reverse flow
- backflow device
- return passage
- table top
- unexpected backflow
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses one kind to prevent unexpected backflow device and its safe infusion device.It prevents that unexpected backflow device includes anti-reverse flow, safety device and the corresponding percolator set on corresponding non-return passage；Its anti-reverse flow includes diaphragm main body portion and the expansion maintenance portion for being connected to the diaphragm main body portion periphery；Its safety device includes posture limit body corresponding with anti-reverse flow, and the adaptive spring protective body being connected between anti-reverse flow and non-return passage；Its percolator includes coupling table top between anti-reverse flow and posture limit body, corresponding to the annular of the anti-reverse flow.Safety infusion device includes the flow regulator connected respectively by corresponding conduit and prevents unexpected backflow device.This prevents that unexpected backflow device and its safe infusion device structure are extremely simple, reasonable, and counterflow-preventing effect is good, has higher infusion safety.
Description
Technical field
The utility model relates to a kind of medical apparatus, in particular to one kind prevents unexpected backflow device and its safe infusion device.
Background technique
Medical infusion device is a kind of common and middlebrow medical treatment auxiliary Sex apparatus, but it again has user's health
Extremely important association influence, existing general infusion device, since the unexpected movement of patient (is as above defended in infusion process
Between life, transhipment, hand activities etc.) or after liquid conveying because of replacement transfusion bottle not in time or pull out needle, blood often occurs
The case where liquid is flow backwards, i.e. blood return phenomenon.Since blood is in pipeline, clotting mechanism can be activated quickly, cause thrombosis, pipe
Roadlock plug, or even the serious medicals accident such as hospital-acquired infection, septicemia can occur, increase the pain of patient, it is unnecessary to cause
Medical tangle.For this purpose, the device in turn for the Anti-reflux blood return function of thering is continuous needle to make improvements, however, this kind of infusion apparatus
Since the structure etc. of its related anti-backflow device has different degrees of unreasonable property etc., or structure is more complicated, phase
High to production and use cost, this kind of device is mostly the structure using the check-valves gate-type for imitating industrial technology pipeline；Just
It is that adverse current anti-blood back effect is not good enough, practicability and reliability are unsatisfactory.
Utility model content
The purpose of this utility model be in view of the deficiency of the prior art, provide one kind prevent unexpected backflow device and
Its safe infusion device.This prevents that unexpected backflow device and its safe infusion device structure are extremely simple, reasonable, easy to use, reliable, prevents
Adverse current effect is good, has higher infusion safety, and manufacture craft is simple, makes low with use cost.
The utility model prevents that the technical solution of unexpected backflow device includes non-return passage, anti-in the non-return passage
Adverse current device, the counterflow-preventing device include one by corresponding flexible joining part 18 be connected at the non-return passage anti-reverse flow,
Safety device and corresponding percolator；The anti-reverse flow includes diaphragm main body portion and is connected to the diaphragm main body
The expansion maintenance portion on portion periphery；The safety device includes a top, corresponding with anti-reverse flow for being located at anti-reverse flow
The posture limit body being fixed in the non-return passage, and be connected to adaptive between the anti-reverse flow and non-return passage
Spring protective body is answered, the adaptive spring protective body is the adaptive spring protective item that one is in " it " shape；The percolator
Including between the anti-reverse flow and posture limit body, be fixedly connected on it is on the internal perisporium of non-return passage, correspond to institute
The annular coupling table top of anti-reverse flow is stated, annular coupling table top and the posture limit body are spaced apart from each other 0.1-1.5mm, described
Annular coupling table top, posture limit body and non-return passage form integral type by ABS, AS or PC plastic.
The posture limit body is a grid type rack or cross.
The adaptive spring protective item of " it " shape is made of rubber or silica gel strip, and the anti-reverse flow is by rubber or silicon
Glue production is constituted.
The annular coupling table top is equipped with its cross-sectional shape annular protrusion triangular in shape and reinforces sealing.
The expansion maintenance portion is thickeied by the edge part in diaphragm main body portion to be formed.
The diaphragm main body portion of the anti-reverse flow is with a thickness of 0.1-0.8mm, and the expansion maintenance portion is with a thickness of 0.5-5mm.
The anti-reverse flow includes membrane body and the rigid ring body for being connected to the membrane body periphery, membrane body it is outer
Diameter is greater than the corresponding internal diameter of annular coupling table top.
Its liquid outlet of the non-return passage is equipped with the connecting device connected with corresponding conduit.
Safety infusion device includes passing through corresponding conduit bottle plug puncture unit interconnected, dropping funnel, inlet valve, essence respectively
Close liquid medicine filter, flow regulator and anti-backflow device, it is characterized in that the anti-backflow device is above-mentioned anti-adverse current suddenly
Device, bottle plug puncture unit be equipped with corresponding protective case, flow regulator with prevent between unexpected backflow device be equipped with corresponding Rule
Connector.
Originally prevent unexpected backflow device and its safe infusion device due to the reasonability of structure, anti-backflow device it is sensitive but
Extremely reliable, no matter infusion pipeline system liquid flows out which kind of existing mutation, can keep operating normally, functional reliability
Height, and since its composition and connection structure are extremely simple, few using component, especially why it has simpler structure
With higher reliability, mainly it is also embodied in that it does not have any separate mechanical active connection part relative to existing such device
Part；Meanwhile while ensuring its stability, reliability higher counterflow-preventing effect, infusion pipeline will not be given to increase meaningless resistance
Power, it is ensured that the smoothness and stabilization of infusion have better practicability and popularizing value.
Detailed description of the invention
Fig. 1 is that the utility model prevents unexpected one example structure schematic diagram of backflow device；Fig. 2 is Fig. 1 top view；Fig. 3 is
This practical connecting device structural schematic diagram newly prevented in another embodiment of unexpected backflow device；Fig. 4 is that the utility model is defeated safely
Infuse one example structure schematic diagram of device.
Specific embodiment
It is practical new to this by following embodiment combination attached drawing in order to further appreciate that the technical solution of the utility model
Type is described further.
As shown in Figs. 1-2, the anti-unexpected backflow device 15 of this example includes the counterflow-preventing device in a non-return passage 15a,
Its non-return passage includes a pipeline being connected in the corresponding infusion channel of corresponding infusion device.
Its counterflow-preventing device includes the anti-reverse flow 4 of rubber or silica gel production composition, annular coupling table top 19, posture limit body
Adaptive spring protective item 10 of " it " shape etc..
Its annular coupling table top 19 is made of the step surface directed downwardly of the table top in non-return passage inner peripheral wall, anti-reverse flow
4 correspond to the lower end transfusion liquid delivery outlet side that annular coupling table top 19(, that is, anti-reverse flow 4 is located at non-return runner).
Its anti-reverse flow 4 includes diaphragm main body portion 4b and the diaphragm exhibition positioned at the edge of diaphragm main body portion 4b
Maintenance portion 4a is opened, the minimum diameter of diaphragm main body portion 4b is greater than annular coupling 19 maximum inner diameter of table top in non-return passage, i.e.,
Diaphragm main body portion 4b crosses the cross section for carrying out the non-return passage of bezel ring, shape coupling table face position.Anti-reverse flow 4 is used as soft company by one
The silica gel or rubber connection sheet of fitting are connected to the corresponding one side wall of non-return passage 15a.The expansion maintenance portion 4a's of anti-reverse flow
With a thickness of 1.5mm, diaphragm main body portion 4b with a thickness of 0.3mm；Maintenance portion is unfolded by the edge part in diaphragm main body portion in it
It thickeies and is formed.Its anti-reverse flow setting expansion maintenance portion (or setting is thin in periphery thickness middle section), returned when both ensure that puncture
Deformation needed for blood in turn ensures the counterflow-preventing effect when the adverse current of unexpected large capacity occurs.
Its posture limit body by one be fixedly installed on non-return passage inner cavity, positioned at annular coupling table top 19 top (i.e.
Positioned at annular coupling table top 19 the transfusion liquid by non-return passage input port side) cross 17 composition.Cross 17
Table top 19, which is coupled, with annular is spaced 0.5mm；Cross 17, annular coupling table top 19 and non-return passage pipeline are moulded by ABS, AS or PC
Material note is integral.Its posture limit body not only plays the role of the anti-reverse flow of support, but also while playing rigid vein puncture can guarantee and see
To the effect of blood back.
The adaptive spring protective item 10 of its " it " shape is made of " it " shape rubber strip or silica gel strip, " it " shape rubber strip
Or the both ends of silica gel strip are connected respectively in the medium position of corresponding the side wall surface and anti-reverse flow of non-return runner.This is practical
It has certain self_adaptive adjusting function to anti-reverse flow to the adaptive spring protective item of novel " it " shape, just
Often when infusion, since the pressure that gravity is formed washes anti-reverse flow open, the adaptive spring protective body of " it " shape structure can be with
Play the role of an anti-standard-sized sheet can not return, it is controllable that anti-reverse flow is made to be in certain opening angle, opening angle
Between 10-60 degree, preferably 45 degree, wider feed liquor range of flow was not only adapted to, but also can ensure that better counterflow-preventing effect.
When operation, when patient is during infusion, due to the unexpected variation of difference in height, the liquid of liquid outlet can dash forward
So adverse current and formed impact anti-reverse flow, due to liquid flow forces effect anti-reverse flow impact annular couple table top,
So that anti-reverse flow is coupled table top with annular and form sealing, and played a supportive role by posture limit body to anti-reverse flow, is prevented anti-reverse
Flow has received large impact and has broken through limited step and fail.
The utility model is prevented in another embodiment of unexpected backflow device.Being provided with one above its annular coupling table top, its is transversal
Shape annular protrusion triangular in shape in face reinforces sealing.Annular reinforces the diaphragm main body portion that sealing corresponds to anti-reverse flow,
In counterflow-preventing, it is close by the vertex angle and the diaphragm formation line of anti-reverse flow, face formula of annular protrusion reinforcement sealing
Envelope, with good counterflow-preventing leakage effect.As shown in figure 3, its lower end transfusion liquid delivery outlet of its non-return passage be equipped with
The connecting device of corresponding conduit connection.Its connecting device includes the connecting tube connecting with the transfusion liquid delivery outlet of non-return passage
Seat 20, and is connected to a horn socket connector 21 of the connection tube socket lower end surface, horn socket connector with connect tube socket
Faying face is equipped with circular table 22.The outside wall surface of horn socket connector rolls tiltedly inside along transfusion liquid conveying direction, and formation is inclined
Oblique periphery wall surface.It improves the connectivity for preventing unexpected backflow device with corresponding conduit by connecting device, so that protrusion-dispelling
Right backflow device has stronger adaptability using more simply, conveniently.Remaining structure of this example etc. can be similar with above-described embodiment.
The utility model is prevented in unexpected backflow device another embodiment.Its anti-reverse flow includes membrane body and is connected to
The rigid ring body on the membrane body periphery, the outer diameter of membrane body are greater than the internal diameter of corresponding annular coupling table top.It can be obtained
Anti-reverse flow couples the better matching property of table top with annular, to obtain relatively better counterflow-preventing safe effect.This example its
Remaining structure etc. can be similar with any of the above-described embodiment.
The utility model safe infusion device embodiment is as shown in Figure 4 comprising by corresponding conduit 12 from top to bottom according to
Secondary bottle plug puncture unit interconnected 2, dosing threeway 7, dropping funnel 8, lower two-way 9, precision liquid medicine filter 11, flow regulator
13, female Luer (screw joint) 14 and prevent unexpected backflow device etc..Corresponding transfusion needle 16 is connected to anti-adverse current suddenly and fills
The field transfusion liquid delivery outlet set.Bottle plug puncture unit 2 is equipped with corresponding protective case 1, and protective case 1 is de- when safe infusion device uses
It goes.Bottle plug puncture unit 2 is equipped with inlet valve 3, liquid stopping clamp 5 is provided on the conduit of the lower part of bottle plug puncture unit 2, dropping funnel 8 enters
Mouth end is connected with fluid injection part 6 by the wherein Single port of dosing threeway 7.It prevents that unexpected backflow device 15 is above-described embodiment
Prevent unexpected backflow device 15.
Claims (9)
1. one kind prevents unexpected backflow device, including non-return passage, the counterflow-preventing device in the non-return passage, it is characterized in that institute
Stating counterflow-preventing device includes anti-reverse flow, the safety device that the non-return passage is connected at by corresponding flexible joining part
With corresponding percolator；The anti-reverse flow includes diaphragm main body portion and the expansion for being connected to the diaphragm main body portion periphery
Maintenance portion；The safety device include one be located at anti-reverse flow top, it is corresponding with anti-reverse flow be fixed at described in
Posture limit body in non-return passage, and the adaptive spring protective being connected between the anti-reverse flow and non-return passage
Body, the adaptive spring protective body are one to be in or the adaptive spring protective item of " it " shape；The percolator includes being located at
Between the anti-reverse flow and posture limit body, be fixedly connected on it is on the internal perisporium of non-return passage, correspond to the counterflow-preventing
The annular coupling table top of piece, annular coupling table top and the posture limit body are spaced apart from each other 0.1-1.5mm, the annular coupling
Table top, posture limit body and non-return passage form integral type by ABS, AS or PC plastic.
2. prevent unexpected backflow device according to claim 1, it is characterized in that the posture limit body be a grid type rack or
Cross.
3. prevent unexpected backflow device according to claim 1, it is characterized in that the adaptive spring protective item of " it " shape by
Rubber or silica gel strip are constituted, and the anti-reverse flow is made of rubber or silica gel production.
4. prevent unexpected backflow device according to claim 1, it is characterized in that the annular coupling table top is equipped with one, its is transversal
Shape annular protrusion triangular in shape in face reinforces sealing.
5. unexpected backflow device is prevented according to claim 1, it is characterized in that the expansion maintenance portion is by the four of diaphragm main body portion
Circumferential edges part thickeies to be formed.
6. prevent unexpected backflow device according to claim 5, it is characterized in that the diaphragm main body portion of the anti-reverse flow with a thickness of
0.1-0.8mm, the expansion maintenance portion is with a thickness of 0.5-5mm.
7. unexpected backflow device is prevented according to claim 1, it is characterized in that the anti-reverse flow includes membrane body and connection
Rigid ring body in the membrane body periphery, the outer diameter of membrane body are greater than the corresponding internal diameter of annular coupling table top.
8. prevent unexpected backflow device according to claim 1, it is characterized in that its liquid outlet of the non-return passage be equipped with
The connecting device of corresponding conduit connection.
9. a kind of safe infusion device, including respectively by corresponding conduit bottle plug puncture unit interconnected, dropping funnel, inlet valve,
Precision liquid medicine filter, flow regulator and anti-backflow device, it is characterized in that the anti-backflow device is described in claim 1
Anti- unexpected backflow device, the bottle plug puncture unit is equipped with corresponding protective case, and the flow regulator and anti-adverse current suddenly fill
Corresponding female Luer is equipped between setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862759.6U CN208448296U (en) | 2017-12-27 | 2017-12-27 | One kind preventing unexpected backflow device and its safe infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721862759.6U CN208448296U (en) | 2017-12-27 | 2017-12-27 | One kind preventing unexpected backflow device and its safe infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208448296U true CN208448296U (en) | 2019-02-01 |
Family
ID=65141274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721862759.6U Expired - Fee Related CN208448296U (en) | 2017-12-27 | 2017-12-27 | One kind preventing unexpected backflow device and its safe infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208448296U (en) |
-
2017
- 2017-12-27 CN CN201721862759.6U patent/CN208448296U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20190201 Termination date: 20201227 |