CN201668805U - Anti-blood back one-way valve for injection - Google Patents
Anti-blood back one-way valve for injection Download PDFInfo
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- CN201668805U CN201668805U CN2010201985506U CN201020198550U CN201668805U CN 201668805 U CN201668805 U CN 201668805U CN 2010201985506 U CN2010201985506 U CN 2010201985506U CN 201020198550 U CN201020198550 U CN 201020198550U CN 201668805 U CN201668805 U CN 201668805U
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- valve
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Abstract
The utility model relates to an anti-blood back one-way valve for injection, which comprises a cylinder, a press foot, a valve nozzle and a valve face, wherein two loaded rings are arranged at two sides of the cylinder and the two sides of the valve nozzle in a common border way, the two sides of the valve nozzle are also provided with two adjustment ribs, the sizes of the loaded rings are the same and are defined by the size of the cylinder, the sizes of the adjustment ribs are the same, the dimension and shape of the adjustment ribs are determined by the satisfaction of a needle for the injection, and the height of the cylinder and the height of the valve nozzle are on the same plane. The anti-blood back one-way valve for the injection of the utility model can prevent leakage, can automatically close, has high safety due to the tight closing, can prevent blood from being polluted, can be safely and stably used for a longer time, and is suitable for all types of remaining needles.
Description
Technical field
This utility model relates to a kind of part of the usefulness of infusing, and particularly a kind of injection blood return prevention check valve belongs to the medical equipment parts.
Background technology
Usually the remaining needle of transfusion usefulness mainly comprises outer pin and interior pin, interior pin generally all adopts metal material to make, outer pin is stayed in the blood vessel behind the intravasation, interior pin is extracted, the nearly central part of pin is equipped with valve for preventing reverse-flow so outside, be the blood return prevention check valve, this kind valve generally all is to make with silicone rubber or rubber soft material, problems will occur as life-time service; As valve port can not be closed the slit, form adverse current when tube for transfusion flows into the pressure of a side when venous pressure is higher than, otherwise, make the liquid of tube for transfusion can not the positive flow vein blood vessel, transfusion pauses.Moreover, in remaining needle is stayed blood vessel the time long or transfusion time is long, at this moment valve port just causes under pressure-less state closure fully because closing force weakens through using repeatedly; Come off or infuse and finish the danger that blood back flow causes massive hemorrhage will take place as tube for transfusion in the infusion process.So the anti-adverse current ability of existing valve for preventing reverse-flow, application is restricted.For this reason, relevant enterprise constantly develops safe valve for preventing reverse-flow, as China Patent No. is 200420078043.4 (anti-reverse mobile venous detaining needles), (200620115384.2 effectively preventing the remaining needle of adverse current) etc., but the anti-adverse current check valve of these products can only prevent blood back in a short period of time, also have is exactly to have the slit to produce at the position that draw point contacts with anti-adverse current lobe, along with the slit of its opening part of increase of service time also constantly increases, in addition along with (surpass more than 6 months) in remaining needle storage time, making capacity also can weaken, the slit increases, and finally can not reach the performance of safety and stability.
The utility model content
The purpose of this utility model provides the durable injection blood return prevention check valve that is used for various types of remaining needles of a kind of safety and stability.
This utility model is achieved in that it comprises cylinder, presser feet, valve nozzle, valve face, and is provided with two stressed circles at the intersection of the both sides of cylinder and valve nozzle, also is provided with two in the both sides of valve nozzle and adjusts ribs.
The size of described two stressed circles is identical, is to decide by the size of described cylinder.
Described two sizes of adjusting rib are identical, and size and shape are to decide by the specification of injection draw point.
The height of described cylinder and the height of described valve nozzle are on same horizontal plane.
Injection blood return prevention check valve of the present utility model is owing to adopt said structure, so it can utilize the closure of the inside and outside arch force control valve mouth of circumference, eliminate in the slit, prevents that blood from refluxing, can reach the purpose of safety and stability use, and can be applicable in the remaining needle of various types of injections.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a vertical view of the present utility model.
Fig. 3 is the left side view of Fig. 2.
Fig. 4 is an application implementation illustration of the present utility model---Y type remaining needle.
Fig. 5 is an application implementation illustration of the present utility model---butterfly type remaining needle.
Among the figure: 1 stressed circle, 2 is adjusted rib, 3 cylinders, 4 presser feets, 5 valve nozzles, 6 valve faces, 7 stressed circles, 8 adjustment ribs, 9 blood return prevention check valves
The specific embodiment
The utility model is described in further detail for embodiment below in conjunction with accompanying drawing.
As shown in Figure 1, 2, 3, injection blood return prevention check valve of the present utility model comprises cylinder 3, presser feet 4, and presser feet 4 is mounted in the bottom of cylinder 3, plays sealing ring when packing remaining needle into, makes the liquid that can not seepage.Upper end at cylinder 3 constitutes valve nozzle 5 by two symmetric tapered region.Cross section at valve nozzle 5 forms valve face 6.Cylinder 3 is cylindrical in the present embodiment, and the height of the height of cylinder 3 and valve nozzle 5 is at same horizontal plane, and is promptly equally high.Both sides intersection at cylinder 3 and valve nozzle 5 is separately installed with stressed circle 1 and stressed circle 7, and both sizes are identical and be to decide by the size of cylinder 3.Because cylinder 3 is columniform, so the inside and outside arch power of utilizing cylindrical stress deformation to produce is controlled the closure (this pressure comes from the inwall both sides, 9 place shown in Fig. 4,5) of valve nozzle 5 by stressed circle 1,7, remedy the blood return prevention check valve simultaneously because of material aging, plastic deformation etc. inevitably factor cause seepage.And adjustment rib 2 also is installed respectively and adjusts rib 8 in the both sides of valve nozzle 5, both sizes are identical and fixed according to injection draw point specification, being used for controlling the closure of valve nozzle 5, is just can uneasiness debug whole rib 2,8 (not providing diagram) more than the 24G as the draw point specification.Above-mentioned parts vulcanize one-shot forming through mold heated, all adopt medical silica-gel to make.
As everyone knows, the blood return prevention check valve in use, there is draw point to be inserted in for a long time wherein at valve nozzle 5 places, after draw point is extracted, because material aging, plastic deformations etc. inevitably factor gap and produce seepage, but because of stressed circle 1 is arranged, the pulling force of 7 circles, the inside and outside arch power of cylindrical barrel 3 self will activate automatically eliminates its slit, thereby effectively close the blood return prevention check valve, valve face 6 its single effects of control, the draw point diameter of with good grounds different size and the adjustment rib 2 of fabrication and installation again, 8, thickness by rib and height are adjusted the closure of valve nozzle 5, the closure of valve nozzle 5 very tight (as shown in Figure 2) almost in line like this, and this just can reach the use of safety and stability long period.
Injection blood return prevention check valve of the present utility model can be applicable in various types of remaining needles, as pen type, Y type, add remaining needles such as Types of Medicine, butterfly type.According to the remaining needle demand of different size, the overall dimensions of blood return prevention check valve can be done corresponding increasing and dwindle, to satisfy the function of all size remaining needle.Be to be applied in Y type, the butterfly type remaining needle (shown in Fig. 4,5) in the present embodiment.
Claims (4)
1. injection blood return prevention check valve, comprise cylinder (3), presser feet (4), valve nozzle (5), valve face (6), it is characterized in that being provided with two stressed circles (1,7), also be provided with two in the both sides of described valve nozzle (5) and adjust ribs (2,8) at the both sides intersection of described cylinder (3) and described valve nozzle (5).
2. injection blood return prevention check valve according to claim 1 is characterized in that the big or small identical of described two stressed circles (1,7), is to decide by the size of described cylinder (3).
3. injection blood return prevention check valve according to claim 1 is characterized in that described two are adjusted the big or small identical of rib (2,8), and size and shape are fixed by the draw point specification of injection.
4. injection blood return prevention check valve according to claim 1, the height that it is characterized in that the height of described cylinder (3) and described valve nozzle (5) is in same level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201985506U CN201668805U (en) | 2010-05-18 | 2010-05-18 | Anti-blood back one-way valve for injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201985506U CN201668805U (en) | 2010-05-18 | 2010-05-18 | Anti-blood back one-way valve for injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201668805U true CN201668805U (en) | 2010-12-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201985506U Expired - Lifetime CN201668805U (en) | 2010-05-18 | 2010-05-18 | Anti-blood back one-way valve for injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201668805U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432682A (en) * | 2013-08-15 | 2013-12-11 | 王幸明 | Remaining needle anti-reflux valve and remaining needle with same |
| CN103505772A (en) * | 2013-09-30 | 2014-01-15 | 苏州市雅思精密模具有限公司 | Backflow prevention infusion tube |
| CN107320844A (en) * | 2017-09-05 | 2017-11-07 | 无锡市中健科仪有限公司 | A kind of external counterpulsation Air inflating and exhausting valve |
| CN108157353A (en) * | 2018-03-13 | 2018-06-15 | 南京至力高企信息技术有限公司 | A kind of CIK cell, which freezes, uses device |
| CN108464874A (en) * | 2018-03-30 | 2018-08-31 | 陶霞霞 | A kind of syringe that can be recycled |
| US11662034B2 (en) | 2019-07-24 | 2023-05-30 | Quest Medical, Inc. | Filtered vacuum relief vent valve |
-
2010
- 2010-05-18 CN CN2010201985506U patent/CN201668805U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103432682A (en) * | 2013-08-15 | 2013-12-11 | 王幸明 | Remaining needle anti-reflux valve and remaining needle with same |
| CN103505772A (en) * | 2013-09-30 | 2014-01-15 | 苏州市雅思精密模具有限公司 | Backflow prevention infusion tube |
| CN107320844A (en) * | 2017-09-05 | 2017-11-07 | 无锡市中健科仪有限公司 | A kind of external counterpulsation Air inflating and exhausting valve |
| CN107320844B (en) * | 2017-09-05 | 2023-04-11 | 无锡市中健科仪有限公司 | Air charging and discharging valve for external counterpulsation |
| CN108157353A (en) * | 2018-03-13 | 2018-06-15 | 南京至力高企信息技术有限公司 | A kind of CIK cell, which freezes, uses device |
| CN108464874A (en) * | 2018-03-30 | 2018-08-31 | 陶霞霞 | A kind of syringe that can be recycled |
| US11662034B2 (en) | 2019-07-24 | 2023-05-30 | Quest Medical, Inc. | Filtered vacuum relief vent valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101215 |