CN204864329U - Automatic exhaust ends liquid and prevents back drop of blood fill - Google Patents
Automatic exhaust ends liquid and prevents back drop of blood fill Download PDFInfo
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- CN204864329U CN204864329U CN201520626148.6U CN201520626148U CN204864329U CN 204864329 U CN204864329 U CN 204864329U CN 201520626148 U CN201520626148 U CN 201520626148U CN 204864329 U CN204864329 U CN 204864329U
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- liquid
- cup
- floating cup
- dropping funnel
- dog
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Abstract
The utility model relates to an automatic exhaust ends liquid and prevents back drop of blood fill, including the body, body upper portion has inlet, lower part to have the liquid outlet, and originally internal have superficial glass, and it has flexible glue base, characterized by to float the cup lower part: be fixed with the dog on the body inner wall circumference, be fixed with the retaining ring outside the superficial cup lower part on the circumference, the dog can block the retaining ring, superficial cup is located the extreme lower position, floats the cup peak and is higher than the dog. The utility model has the advantages of when the density of floating the cup is less, float in liquid and rising, rise to the certain degree, will be blocked by the dog, can not continue the come -up and plug up the inlet, and this moment, liquid passageway under the void formation between the dog is not so can hinder the normal flow of liquid, in addition, the dog forms a restraint to the circumference that floats the cup, keeps the uniformity of axis, and when falling like this, the flexible glue base can pinpoint on the liquid outlet, ends the liquid effect when having guaranteed the dropping funnel tilt state.
Description
Technical field
This utility model relates to the dropping funnel that a kind of transfusion device uses, and belongs to medical apparatus field.
Background technology
Transfusion device is widely used medical apparatus and instruments, its objective is and liquid is inputted human body, and its operation principle is: liquid enters human body through perforator, upper tubing (containing liquid bag), dropping funnel, lower tube for transfusion (containing switch), syringe needle.Wherein the effect of dropping funnel stores medicinal liquid, is convenient to observe medicinal liquid flow velocity and medicine liquid level.
Above-mentioned structure, when Clinical practice, also exists following problem:
After upper liquid is totally lost, before the liquid that must store in dropping funnel has in time dripped, allow new liq enter into dropping funnel, otherwise the air bubble in dropping funnel can enter human body, thus formation aeroembolism, physical and mental health and even the life security of patient can be threatened time serious.Meanwhile, under the blood pressure pressure of human body, the blood in human body also can be back in lower tube for transfusion.
In order to solve aeroembolism and blood back phenomenon, the transfusion device of only liquid blood return prevention is have developed before my company, primary structure is in dropping funnel, arrange floating cup; floating cup is suspended in the liquid storage in dropping funnel at ordinary times; do not affect the proper flow of liquid, and when the stock solution level in dropping funnel declines, floating cup declines thereupon; until close the liquid outlet of dropping funnel, thus realize the function of only liquid and blood return prevention.
But in normal operation, Infusion set is in plumbness to above-mentioned structure, floating cup and flexible glue base form fluid stopping assembly, are subject to gravity, buoyancy combined effect.When in dropping funnel, liquid is more, the buoyancy produced is greater than fluid stopping assembly self gravitation, causes fluid stopping assembly to float up to new equilbrium position, and flexible glue base is separated with lower tube for transfusion, and liquid enters lower tube for transfusion, normal infusion; When liquid in dropping funnel reduces, fluid stopping assembly sinks thereupon, and when buoyancy that liquid produces is not enough to floating cup gravitational equilibrium, flexible glue base and lower tube for transfusion are fitted, and realize fluid stopping.
Above structure, there will be following defect: 1. the top of floating cup can block the feed pathway on dropping funnel top, makes liquid not drop in dropping funnel normally, more easily occurs aeroembolism and blood back phenomenon; 2. in fact, during transfusion, in a lot of situation, dropping funnel is all in heeling condition, and gravity direction and the drip chamber axis direction of floating cup are inconsistent, is easy to cause sealing smoothly only liquid.
Utility model content
The purpose of this utility model is to provide a kind of automatic vent and stops liquid blood return prevention dropping funnel to make up the deficiency of prior art.
This utility model is the technical scheme adopted that achieves the goal: automatic vent stops liquid blood return prevention dropping funnel, comprises body, and body upper part has inlet, liquid outlet is arranged at bottom, has floating cup in body, and flexible glue base is arranged at floating cup bottom, it is characterized in that:
Inner body wall is circumferentially fixed with block; Floating cup lower outer circumferential is fixed with back-up ring; Block can block back-up ring;
When floating cup is positioned at extreme lower position, the peak of floating cup is higher than block.
The scheme optimized: the top of floating cup is hemispherical.
The scheme optimized: floating cup comprises floating cup and cup of floating downward, adopts grafting or bonding mode to connect between the two; Recess is arranged at floating cup bottom.
The scheme optimized: the quantity of block is 3-6, is uniformly distributed at circumferencial direction.
the beneficial effects of the utility model are: when the density of floating cup is less, floating rising in a liquid, rises to a certain degree, will be blocked by block, can not continue floating and block inlet; And now, the space between block forms lower liquid passage, so the proper flow of liquid can not be hindered; In addition, the circumference of block to floating cup forms a kind of constraint, and keep the concordance of axis, when falling like this, flexible glue base can be accurately positioned on liquid outlet, ensure that only liquid effect during dropping funnel heeling condition.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment.
Fig. 2 is the profile of Fig. 1.
Fig. 3 be dropping funnel inclination conditions float downward cup floating time structural representation.
Fig. 4 is the fit structure schematic diagram of block and back-up ring.
Detailed description of the invention
In the drawings, 1 is body, and 2 is inlets, and 3 is liquid outlets, and 4 is floating cups, and 5 is flexible glue bases, and 6 is blocks, and 7 is back-up rings, and 9 is recesses.
Embodiment 1:
When normally using, liquid enters in dropping funnel from the inlet 2 on body 1 top, stores in dropping funnel, has certain liquid level, and liquid flows out dropping funnel from liquid outlet 3 again and enter human body after lower tube for transfusion.
In above process, floating cup 4 proportion is less than liquid, in liquid on float, if do not retrained it, floating cup 4 just likely floats to top, closes inlet 3, makes dropping funnel can not normal feed liquor.In order to avoid the generation of this situation, we are circumferentially fixed with block 6 at body 1 inwall, and floating cup 4 lower outer circumferential is fixed with back-up ring 7.Floating cup 4 floats to a certain extent, and block 6 will block back-up ring 7, makes floating cup 4 can not continue to rise.
In infusion process, floating cup 4 will remain this state, and block 6 space each other just becomes lower liquid passage, ensure that normally carrying out of lower liquid process.Meanwhile, the effect of contraction of block 6 to floating cup 4 entirety can make floating cup 4 keep in uphill process and the coaxial state of dropping funnel.
After upper liquid is totally lost, again could not in time liquid feeding when, liquid level in dropping funnel declines gradually; floating cup 4 is also along with whereabouts (remain the coaxial state with dropping funnel under the constraint of block 6); until liquid outlet 3 is closed by the flexible glue base 5 of its lower end; make air not enter human body by liquid outlet 3, reaches the object of only liquid and blood return prevention.
Now, the peak of floating cup 4 is higher than block 6, and the object of design is like this: when upper liquid enters dropping funnel again, and floating cup 4 can float smoothly, and can not be blocked by block 6.
Embodiment 2:
In the present embodiment, the top of floating cup 4 is hemispherical, makes inlet 2 dripping can not produce the phenomenon of splashing.
Embodiment 3:
In order to increase the buoyancy of floating cup 4, floating cup being divided into floating cup and cup of floating downward, adopting grafting or bonding mode to connect between the two; Recess 9 is arranged at floating cup bottom, to increase the lifting surface area of the buoyancy of floating cup 4.
In all of the embodiments shown above, all adopt central axis locate mode, more elongated floating cup coordinates with block, ensures central axis and the dropping funnel central axes of floating cup as far as possible.When gap is identical, floating cup is more elongated, and axis axis oscillating angle is less, and it is more accurate to locate.Block and floating cup contact area reduce, and can reduce frictional resistance, are convenient to freely floating or declining of relief valve, especially when dropping funnel tilts to use.
This elongated locate mode of central axis accurately, ensure that dropping funnel is not more than within the scope of 30 degree at inclination angle, and floating cup can both accurate tight closed liquid outlet.And product most cases when reality uses is tilted-putted.
Claims (4)
1. automatic vent stops liquid blood return prevention dropping funnel, comprises body, and body upper part has inlet, liquid outlet is arranged at bottom, has floating cup in body, and flexible glue base is arranged at floating cup bottom, it is characterized in that:
Inner body wall is circumferentially fixed with block; Floating cup lower outer circumferential is fixed with back-up ring; Block can block back-up ring;
When floating cup is positioned at extreme lower position, the peak of floating cup is higher than block.
2. automatic vent according to claim 1 stops liquid blood return prevention dropping funnel, it is characterized in that: the top of floating cup is hemispherical.
3. automatic vent according to claim 1 and 2 stops liquid blood return prevention dropping funnel, it is characterized in that: floating cup comprises floating cup and cup of floating downward, and adopts grafting or bonding mode to connect between the two; Recess is arranged at floating cup bottom.
4. automatic vent according to claim 1 and 2 stops liquid blood return prevention dropping funnel, it is characterized in that: the quantity of block is 3-6, is uniformly distributed at circumferencial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520626148.6U CN204864329U (en) | 2015-08-19 | 2015-08-19 | Automatic exhaust ends liquid and prevents back drop of blood fill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520626148.6U CN204864329U (en) | 2015-08-19 | 2015-08-19 | Automatic exhaust ends liquid and prevents back drop of blood fill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204864329U true CN204864329U (en) | 2015-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520626148.6U Active CN204864329U (en) | 2015-08-19 | 2015-08-19 | Automatic exhaust ends liquid and prevents back drop of blood fill |
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| Country | Link |
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| CN (1) | CN204864329U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126191A (en) * | 2015-08-19 | 2015-12-09 | 四川普瑞斯生物科技有限公司 | Automatic exhausting, liquid-stopping and blood return-preventing drip chamber |
-
2015
- 2015-08-19 CN CN201520626148.6U patent/CN204864329U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105126191A (en) * | 2015-08-19 | 2015-12-09 | 四川普瑞斯生物科技有限公司 | Automatic exhausting, liquid-stopping and blood return-preventing drip chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |