CN202426960U - Blood-return-preventing automatic fluid-stopping infusion device - Google Patents
Blood-return-preventing automatic fluid-stopping infusion device Download PDFInfo
- Publication number
- CN202426960U CN202426960U CN2012202804723U CN201220280472U CN202426960U CN 202426960 U CN202426960 U CN 202426960U CN 2012202804723 U CN2012202804723 U CN 2012202804723U CN 201220280472 U CN201220280472 U CN 201220280472U CN 202426960 U CN202426960 U CN 202426960U
- Authority
- CN
- China
- Prior art keywords
- drip chamber
- buoyancy aid
- blood
- injection
- opening part
- Prior art date
- 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.)
- Expired - Fee Related
Links
- 238000001802 infusion Methods 0.000 title claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 45
- 239000007924 injection Substances 0.000 claims abstract description 45
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000741 silica gel Substances 0.000 claims abstract description 18
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 18
- 239000008280 blood Substances 0.000 claims abstract description 14
- 210000004369 blood Anatomy 0.000 claims abstract description 14
- 230000002265 prevention Effects 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 24
- 125000006850 spacer group Chemical group 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 206010041349 Somnolence Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a blood-return-preventing automatic fluid-stopping infusion device and belongs to medical instruments. The blood-return-preventing automatic fluid-stopping infusion device comprises an injection needle (1), an adjusting valve (2), a liquid dropping chamber (3) and a bottle inserting needle (4) which are communicated through an infusion tube. An automatic control valve is arranged in the liquid dropping chamber (3), the automatic control valve is a column-shaped floating body, a cubic seal cavity (5) is arranged in the middle of the floating body, a cylindrical upper guide rod (6) and a cylindrical lower guide rod (7) are respectively and fixedly connected with tips the upper end and the lower end of the floating body, and simultaneously an upper silica gel plugging cover (8) and a lower silica gel plugging cover (9) are respectively sleeved at a connecting position of the upper guide rod and the floating body and a connecting position of the lower guide rod and the floating body. The blood-return-preventing automatic fluid-stopping infusion device is simple in structure and low in cost, can effectively and automatically closing a through hole below a liquid storage chamber when injection liquid is drained away, enables the injection liquid in the infusion device not to flow continuously, and simultaneously can prevent blood of patients from flowing back to the infusion device.
Description
Technical field
This utility model relates to the automatic solution stopping transfusion device of a kind of blood return prevention.
Background technology
Present widely used disposable transfusion device; Mostly constitute by needle for inserting bottle, upper tubing, drip chamber, following tube for transfusion, control valve, filter, injection needle; During transfusion; Needle for inserting bottle inserts the transfusion bottle that fills injection, and the injection needle of the other end thrusts human vein, and atmospheric pressure and injection deadweight that the air inlet from needle for inserting bottle gets in the bottle are input into the injection fluid infusion in the human vein blood vessel through tube for transfusion.The transfusion injection often expends the tediously long time, can reach sometimes more than several hours, in infusion process; Because patient is tired or sleepy with nurse personnel's carelessness, very easily ignore the carrying out of fluid infusion, so that when injection flows to end; Decline along with injection liquid level in the transfusion device; Injection attaches the pressure of depositing and also descends thereupon, and when pressure dropped to the pressure that is lower than blood in the patient body, the backflow of blood that then can occur the patient inevitably returned the phenomenon of tube for transfusion.Make blood clotting block patient's blood vessel and entry needle; Jeopardize patient safety, also must change dropper again for the continuation drop simultaneously and make vascular puncture, inconvenience is all arranged for patient and nurse; Therefore; At present existing many automatic close-type transfusion devices and infusion monitor arise at the historic moment, but they have complex structure or close tightly inadequately, shortcomings such as weak effect.Such as:
On November 19th, 2008, Chinese utility model patent Granted publication CN 201150694Y, disclosed a kind of transfusion blood return preventer is that the bottom of drip chamber and the joint face of tube for transfusion are designed to the conical surface, at the inner ball float of installing of drip chamber; Ball float top is hemisphere, and the bottom is divided into cone, and the ball float lower part assigns in the tube for transfusion.The cone of the ball float lower part of this utility model must design and produce very accurately, could be when injection flow to end, and ball float lower part cone is filled under the deadweight effect in the tube for transfusion exactly.Have, the phenomenon that ball float is fastened in drip chamber takes place in this device also regular meeting, causes the difficulty in the use again.
In addition; On June 29th, 2005, Chinese utility model patent Granted publication CN 2706176Y also discloses a kind of disposable transfusion device, is to be provided with self-closing self-locking device in the bottom at drip chamber; This self-closing self-locking device comprises spacer, buoyancy aid and snap ring; The spacer crosswise fixed is in drip chamber, and the upper end of buoyancy aid passes spacer and by the location of the snap ring clamping on the spacer, match with the port of tube for transfusion in the lower surface of buoyancy aid.Though when this design is accomplished in transfusion, can seal tube for transfusion automatically.But; This device can only disposablely use, in case in infusion process, in time do not changing injection, occurs shot liquid stream because of carelessness to the greatest extent the time; Just formed the drip chamber locking; Even the nurse finds to handle, also can only change transfusion device again afterwards could increase use cost so again again for patient person has infused.
The utility model content
In order to overcome above-mentioned shortcoming; This utility model provides a kind of blood return prevention automatic solution stopping transfusion device; Simple in structure, with low cost, can, seal injection through hole below the liquid-accumulating chamber effectively when flowing to end automatically; Make the injection in the transfusion device no longer continue to flow, can avoid in patient's the backflow of blood backflow transfusion device simultaneously.
This utility model solves the technical scheme that its technical problem adopted: the automatic solution stopping transfusion device of a kind of blood return prevention comprises the injection needle, control valve, drip chamber and the needle for inserting bottle that are connected by tube for transfusion; In drip chamber, be provided with autocontrol valve; Described autocontrol valve is the buoyancy aid of a cylindricality; There is the cube sealed cavity at the buoyancy aid middle part, in the tip of buoyancy aid upper and lower side, is fixedly connected with columned guide post and the following guide post gone up respectively, and the junction of upper and lower guide post and buoyancy aid also is with silica gel shutoff cover and following silica gel shutoff cover respectively simultaneously; The upper and lower side inside of described drip chamber have respectively connect the infusion tube joint on put in opening part with under put in opening part; The last guide post correspondence of above-mentioned buoyancy aid upper end is inserted in and puts in the opening part, and the following guide post correspondence of buoyancy aid lower end is inserted in down and puts in the opening part; And the diameter of last guide post less than on put in the diameter of opening part, the diameter of following guide post can freely move up and down buoyancy aid less than the diameter that puts in opening part down in drip chamber.
Infusion tube is connected on this utility model drip chamber top hose joint and the transfusion device, and infusion tube is connected under drip chamber bottom hose joint and the transfusion device.Autocontrol valve plays the entering of control injection and flows out drip chamber; Last guide post plays the whole autocontrol valve of control balance with following guide post; Last silica gel shutoff cover and following silica gel shutoff cover play shutoff drip chamber inlet and shutoff drip chamber liquid outlet respectively; Buoyancy aid plays a part along with injection liquid level in the drip chamber rises and descends.
This utility model is through above-mentioned concrete design; When transfusion is accomplished; Can seal the injection that tube for transfusion reaches in the transfusion device automatically and no longer continue to flow, can avoid the purpose in patient's the backflow of blood backflow transfusion device simultaneously, have the advantage of compact conformation, safe and convenient to use, good reliability.Compare with prior art, the beneficial effect of this utility model is: 1. avoid in patient's the backflow of blood backflow transfusion device; 2. avoid the trouble that causes to medical personnel behind the tube for transfusion of air admission transfusion device lower end; 3. avoid causing transfusion device to lose efficacy; 4. avoid increasing the patient suffering.
Description of drawings
Fig. 1 is the structural representation of this utility model.
Fig. 2 is this utility model transfusion sketch map.
Fig. 3 blocks drip chamber inlet sketch map for silica gel shutoff cover on this utility model.
Fig. 4 flows out sketch map for this utility model stops the injection in the drip chamber.
In the accompanying drawing: 1 injection needle; 2 control valves; 3 drip chambers; 4 needle for inserting bottle; 5 cube sealed cavities; Guide post on 6; 7 times guide posts; Silica gel shutoff cover on 8; 9 times silica gel shutoff covers; Put in opening part on 10; Put in opening part 11 times.
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is done detailed explanation.
With reference to the automatic solution stopping transfusion device of 1 one kinds of blood return preventions of accompanying drawing, comprise the injection needle 1, control valve 2, drip chamber 3 and the needle for inserting bottle 4 that are connected by tube for transfusion; In drip chamber 3, be provided with autocontrol valve; Described autocontrol valve is the buoyancy aid of a cylindricality; There is cube sealed cavity 5 at the buoyancy aid middle part, in the tip of buoyancy aid upper and lower side, is fixedly connected with columned guide post 6 and the following guide post 7 gone up respectively, and the junction of upper and lower guide post and buoyancy aid also is with silica gel shutoff cover 8 and following silica gel shutoff cover 9 respectively simultaneously; The upper and lower side inside of described drip chamber 3 have respectively connect the infusion tube joint on put in opening part 10 with under put in opening part 11; Last guide post 6 correspondences of above-mentioned buoyancy aid upper end are inserted in and put in the opening part 10, and following guide post 7 correspondences of buoyancy aid lower end are inserted in down and put in the opening part 11; And the diameter of last guide post 6 less than on put in the diameter of opening part 10, the diameter of following guide post 7 can freely move up and down buoyancy aid less than the diameter that puts in opening part 11 down in drip chamber 3.
Operation principle: when medical personnel prepare for the patient to infuse insert the needle for inserting bottle 4 of this utility model infusion bottles in the bag; Silica gel sheath is in the state of shutoff drip chamber liquid outlet under this moment autocontrol valve, infusion bottle injection in the bag then enter into drip chamber 3 because of gravity is dirty; Along with the rising of drip chamber 3 store injection liquid liquid levels, when the injection liquid level rose to the autocontrol valve position of floating body, buoyancy aid worked; Rise thereby drive whole autocontrol valve, following silica gel shutoff cover 9 leaves the no longer tube for transfusion mouth of pipe under the shutoff of drip chamber liquid outlet, and the injection in the drip chamber 3 gets into down infusion tube because of gravity; When liquid to be injected has been arranged the air in the transfusion device; Medical personnel can inject to the patient, and whole the transfusion successfully is with reference to accompanying drawing 2.
Because the injection that is flowed into by the drip chamber inlet is greater than the injection that is flowed out drip chamber 3 by the tube for transfusion mouth of pipe down; Injection in the drip chamber 3 can continue to increase; Along with the rising of injection liquid level, buoyancy aid can continue to drive whole autocontrol valve and rise, when the injection liquid level rises to certain altitude; Last silica gel shutoff cover 8 will be blocked the drip chamber inlet, make infusion bottle bag no longer flow into drip chamber 3 through the injection of upper tubing.At this moment, the injection in the drip chamber 3 can continue to flow out the tube for transfusion mouth of pipe down, and warp infusion tube, syringe needle down gets in the patient body, and whole infusion process is not interrupted, with reference to accompanying drawing 3.
And along with the reduction of injection liquid level in the drip chamber 3, buoyancy aid can drive whole autocontrol valve and descend, and 8 in last silica gel shutoff cover can leave the drip chamber inlet plugging action that do not recur, and the injection in the infusion bottle Zhong bag can be through last infusion tube inflow drip chamber 3.When the injection in the infusion bottle (bag) is totally lost, do not have injection to flow into drip chamber 3, and the injection of outflow drip chamber liquid outlet does not stop; Injection in the drip chamber 3 can reduce; The liquid level of injection can reduce in the drip chamber 3, and when autocontrol valve dropped to a certain degree, down silica gel shutoff cover 9 will shutoff drip chamber liquid outlet for it; Thereby stop the injection in the drip chamber 3 no longer to flow out drip chamber 3, with reference to accompanying drawing 4.
Because of also having a certain amount of injection in the drip chamber 3, under the successfully stifled air admission that broken in the infusion tube; Owing to there is not the pressure of air, the injection under being in below the infusion tube no longer flows in the patient body, has also avoided the backflow of blood in the patient body to return transfusion device.When medical personnel change liquid medicine bottle behind the bag, liquid medicine bottle liquid medicine in the bag can flow in the drip chamber 3 through last infusion tube, continue transfusion.
Claims (1)
1. the automatic solution stopping transfusion device of blood return prevention comprises the injection needle (1), control valve (2), drip chamber (3) and the needle for inserting bottle (4) that are connected by tube for transfusion; In drip chamber (3), be provided with autocontrol valve; It is characterized in that: described autocontrol valve is the buoyancy aid of a cylindricality; There is cube sealed cavity (5) at the buoyancy aid middle part; Tip at the buoyancy aid upper and lower side; Be fixedly connected with columned guide pin (6) and the following guide pin (7) gone up respectively, the junction of upper and lower guide pin and buoyancy aid also is with silica gel shutoff cover (8) and following silica gel shutoff cover (9) respectively simultaneously; The upper and lower side inside of described drip chamber (3) have respectively connect the infusion tube joint on put in opening part (10) and under put in opening part (11); Last guide pin (6) correspondence of above-mentioned buoyancy aid upper end is inserted in and puts in the opening part (10), and following guide pin (7) correspondence of buoyancy aid lower end is inserted in down and puts in the opening part (11); And the diameter of last guide pin (6) less than on put in the diameter of opening part (10), the diameter of following guide pin (7) can freely move up and down buoyancy aid less than the diameter that puts in opening part (11) down in drip chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202804723U CN202426960U (en) | 2012-06-14 | 2012-06-14 | Blood-return-preventing automatic fluid-stopping infusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202804723U CN202426960U (en) | 2012-06-14 | 2012-06-14 | Blood-return-preventing automatic fluid-stopping infusion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202426960U true CN202426960U (en) | 2012-09-12 |
Family
ID=46776441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202804723U Expired - Fee Related CN202426960U (en) | 2012-06-14 | 2012-06-14 | Blood-return-preventing automatic fluid-stopping infusion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202426960U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436359A (en) * | 2014-12-27 | 2015-03-25 | 贵州师范大学 | Infusion set capable of stopping automatically |
| CN107596492A (en) * | 2017-09-29 | 2018-01-19 | 陈芳 | A kind of transfusion device back-flow preventer |
| CN112156260A (en) * | 2020-10-12 | 2021-01-01 | 四川省肿瘤医院 | Multifunctional enema and anus plugging device |
| CN112870065A (en) * | 2021-01-13 | 2021-06-01 | 唐超琼 | Medicament quantitative injection device based on gynaecology and obstetrics's operation is used |
-
2012
- 2012-06-14 CN CN2012202804723U patent/CN202426960U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436359A (en) * | 2014-12-27 | 2015-03-25 | 贵州师范大学 | Infusion set capable of stopping automatically |
| CN107596492A (en) * | 2017-09-29 | 2018-01-19 | 陈芳 | A kind of transfusion device back-flow preventer |
| CN112156260A (en) * | 2020-10-12 | 2021-01-01 | 四川省肿瘤医院 | Multifunctional enema and anus plugging device |
| CN112870065A (en) * | 2021-01-13 | 2021-06-01 | 唐超琼 | Medicament quantitative injection device based on gynaecology and obstetrics's operation is used |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104117109B (en) | A kind of automatic decanting infusion apparatus based on law of buoyancy | |
| CN110201263B (en) | A medical automatic switching infusion tube | |
| CN114247006A (en) | Infusion apparatus capable of automatically stopping liquid and preventing blood return | |
| CN204121505U (en) | A kind ofly change a bottle transfusion device device based on law of buoyancy | |
| CN102631733A (en) | Automatic exhaust and liquid stop and anti-blood backflow high-speed precision intelligent security infusion set | |
| CN204147347U (en) | Single use safety type blood exchange transfusion set | |
| CN203609722U (en) | Fluid infusion control device | |
| CN104399141A (en) | Multi-functional slow-emptying and exhausting infusion apparatus | |
| CN206081191U (en) | Automatic trade a bag transfusion system | |
| CN204563142U (en) | Buret type secondary filter safe transfusion system | |
| CN102813983B (en) | Disposable self-exhausted bidirectional automatic-closing-type liquid-stop anti-blood-return transfusion device | |
| CN204033906U (en) | Safe transfusion system | |
| CN202173641U (en) | Transfusion device with an automatic transfusion-stop, blood backflow prevention and filter structure | |
| CN102921078A (en) | Automatic liquid-stopping and automatic exhaust infusion device | |
| CN201279325Y (en) | Transfusion device capable of automatically stopping transfusing | |
| CN101700421A (en) | Disposable safety infusion device | |
| WO2015002572A1 (en) | Device for introducing infusion solutions and having anti-air valve | |
| CN202128777U (en) | Disposable safety transfusion device | |
| CN203790366U (en) | Morphy dropper provided with wash pipe | |
| CN102178988A (en) | Disposable safety transfusion device | |
| RU135922U1 (en) | DEVICE FOR INFUSION INFUSION SOLUTIONS WITH ANTI-AIR VALVE | |
| CN202078597U (en) | Backflow preventive transfusion apparatus | |
| CN202751643U (en) | Disposable bi-direction self-sealing type liquid-stopping blood-return-prevention infusion device | |
| CN207306941U (en) | A kind of automatic liquid-stopping transfusion system | |
| CN209060173U (en) | A kind of infusion apparatus of included triple valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20130614 |