CN216963177U - Anti-backflow venous infusion apparatus - Google Patents
Anti-backflow venous infusion apparatus Download PDFInfo
- Publication number
- CN216963177U CN216963177U CN202122672754.XU CN202122672754U CN216963177U CN 216963177 U CN216963177 U CN 216963177U CN 202122672754 U CN202122672754 U CN 202122672754U CN 216963177 U CN216963177 U CN 216963177U
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- CN
- China
- Prior art keywords
- backflow
- positioning block
- block
- sealing
- transfusion
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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.)
- Expired - Fee Related
Links
- 238000001802 infusion Methods 0.000 title claims description 35
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 239000003814 drug Substances 0.000 claims description 31
- 238000001914 filtration Methods 0.000 claims description 17
- 239000012528 membrane Substances 0.000 claims description 15
- 230000002265 prevention Effects 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 7
- 238000001990 intravenous administration Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 5
- 238000001467 acupuncture Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 1
- 241001411320 Eriogonum inflatum Species 0.000 description 7
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 230000000151 anti-reflux effect Effects 0.000 description 2
- 101150038956 cup-4 gene Proteins 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 208000010378 Pulmonary Embolism Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000010255 intramuscular injection Methods 0.000 description 1
- 239000007927 intramuscular injection Substances 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a backflow-preventing venous transfusion device, which comprises a bottle plug puncture needle, a protective cap, a transfusion tube, a drip cup, a backflow-preventing device, a flow speed regulator and a syringe needle, wherein the transfusion tube is connected with the bottle plug puncture needle and the syringe needle, the protective cap is arranged on the bottle plug puncture needle, two end surfaces of the backflow-preventing device are provided with openings communicated with the transfusion tube, the backflow-preventing device comprises a sealing block, a positioning block, a stop block and a liquid discharge hole, the positioning block is fixed on the inner side of the backflow-preventing device, the top of the positioning block is provided with a through hole communicated with the transfusion tube, the sealing block is positioned on two inner sides of the through hole on the top of the positioning block, the stop block is positioned on the inner side of the positioning block, the bottom of the stop block is connected with the bottom of the positioning block through a reset spring, the sealing ball head is positioned between the two sealing blocks, the sealing ball head is matched with the sealing blocks in size, the liquid discharge hole is arranged in the positioning block, and the lower outlet of the liquid discharge hole is communicated with the transfusion tube, the inlet above the liquid discharge hole and the middle part of the baffle block are at a certain height position.
Description
Technical Field
The utility model belongs to the technical field of medical infusion sets, and particularly relates to an anti-backflow venous infusion set.
Background
With the lapse of time, people develop new drugs continuously, but the drug resistance of bacteria which threatens the formation of various diseases of people is increased continuously, viruses are changed continuously, the treatment of various diseases of people is difficult, diseases which are usually treated by taking drugs before can be treated by intramuscular injection or infusion, and therefore, intravenous infusion becomes one of the most common and effective administration modes in modern clinical treatment. When the transfusion is performed on a patient, the condition that air exists in a transfusion device is often met, if the air in a transfusion tube is not completely discharged or a hose device is not tight and the like, air enters the blood of the patient to form pulmonary embolism, so that the life of the patient is endangered, and therefore, the air in the transfusion tube needs to be discharged.
Meanwhile, after the infusion is finished, if the needle head is not pulled out in time, blood can possibly return, so that the blood of the patient flows back to the infusion apparatus, and potential safety hazards are brought to the patient. In the prior art, most intravenous infusion sets have no restriction on an infusion tube connected with an infusion bottle, so that the infusion tube is in a natural state, and the infusion safety is reduced. Therefore, the problem of blood return prevention of the infusion apparatus is a problem to be solved urgently in the field of clinical care.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of providing a backflow-preventing venous transfusion device which is simple in structure, capable of safely and quickly exhausting air, and meanwhile capable of preventing blood backflow in a transfusion process and the like.
In order to solve the technical problem, the utility model is realized by the following modes:
an anti-backflow venous transfusion device comprises a bottle stopper puncture needle, a protective cap, a transfusion tube, a drip cup, an anti-backflow device and a syringe needle, one end of the infusion tube is connected with a bottle stopper puncture needle, the other end of the infusion tube is connected with an injection needle, the protective cap is arranged on the bottle stopper puncture needle, the drip cup and the backflow prevention device are sequentially arranged on the infusion tube, the upper end surface and the lower end surface of the backflow prevention device are provided with openings communicated with the infusion tube, the backflow prevention device comprises a sealing block, a positioning block, a stop block and a liquid discharge hole, the positioning block is fixed on the inner side of the backflow prevention device, the top of the positioning block is provided with a through hole communicated with the infusion tube, the sealing blocks are positioned at two sides of the inside of the through hole at the top of the positioning block, the stop blocks are positioned at the inner side of the positioning block, and the bottom of dog and locating piece is passed through reset spring and is connected to guarantee that reset spring slides the dog and carries out effective control in the locating piece. The top of dog is hemispherical sealed bulb, and sealed bulb is located two seal block, and sealed bulb and seal block size match, the outage sets up in the inside of locating piece the latter half, and the below export and the transfer line of outage are linked together, and the top import and the dog middle part of outage are in the position of a certain height.
Furthermore, in order to solve the problems that air bubbles are likely to appear in the infusion process and other impurities exist in the liquid medicine, the utility model is also provided with a precise filter, the precise filter is arranged on a liquid conveying pipe between the drip cup and the backflow prevention device, the precise filter comprises a liquid medicine inlet, a liquid medicine outlet, a breathable film, an exhaust hole, a filter screen and a filter membrane, the liquid medicine inlet and the liquid medicine outlet are communicated with a liquid conveying pipe, the exhaust hole is arranged on one side of the upper end of the precision filter and communicated with the outside, the air permeable film is covered on the exhaust hole and used for blocking liquid medicine and air, the inside of the precision filter is divided into a left part and a right part by a partition plate, the cutting plate is provided with a filtering membrane at the middle lower part, the filtering screen is arranged above the filtering membrane at the left side of the precision filter, and a plurality of needling pieces are vertically arranged on the filtering screen and used for eliminating bubbles in the liquid medicine conveying process.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts the anti-reflux device, when the liquid medicine flows to the anti-reflux device along with the infusion tube, the sealing ball head moves downwards away from the sealing block under the action of pressure, and then the return spring is extruded by the stop block, the stop block moves downwards continuously along with the further increase of the pressure of the liquid medicine, the liquid discharge hole in the positioning block is exposed, and the liquid medicine flows to the lower part of the infusion tube through the liquid discharge hole to complete the infusion process; after the transfusion is finished, the sealing ball head resets under the action of the reset spring to block the blood from flowing back.
Meanwhile, the infusion tube is also provided with a precise filtering infusion set, and air bubbles in the medicine are eliminated and timely discharged by utilizing the exhaust holes and the vertically arranged acupuncture piece; filter the impurity in the liquid medicine through the filtration membrane on the partition plate, filter the impurity after the while and remain in precision filter's left side bottom, and filtration membrane setting is at one section distance of division board lower extreme top, and the impurity after the filtration does not influence filtration membrane work to the realization is to the microfiltration of medicine.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is an enlarged view of the portion A of the present invention.
FIG. 3 is a cross-sectional view of the backflow prevention device of the present invention.
The respective labels in the figure are: 1. bottle stopper pjncture needle, 2, protection cap, 3, transfer line, 4, drip cup, 5, precision filter, 6, anti-return device, 7, flow rate regulator, 8, syringe needle, 51, liquid medicine import, 52, liquid medicine export, 53, ventilated membrane, 54, exhaust hole, 55, filter screen, 56, filtration membrane, 57, division board, 58, acupuncture piece, 61, sealed piece, 62, locating piece, 63, dog, 64, outage, 65, reset spring, 66, sealed bulb.
Detailed Description
The following detailed description of embodiments of the utility model is provided in connection with the accompanying drawings and the examples.
An anti-backflow venous transfusion device comprises a bottle stopper puncture needle 1, a protective sleeve cap 2, a transfusion tube 3, a drip cup 4, an anti-backflow device 6 and a syringe needle 8, one end of the infusion tube is connected with a bottle stopper puncture needle, the other end of the infusion tube is connected with an injection needle, the protective cap is arranged on the bottle stopper puncture needle, the drip cup and the backflow prevention device are sequentially arranged on the infusion tube, the upper end surface and the lower end surface of the backflow prevention device are provided with holes communicated with the infusion tube, the backflow prevention device 6 comprises a sealing block 61, a positioning block 62, a stop block 63 and a liquid discharge hole 64, the positioning block is fixed on the inner side of the backflow prevention device, the top of the positioning block is provided with a through hole communicated with the infusion tube, the sealing blocks are positioned at two sides of the inside of the through hole at the top of the positioning block, the stop dog is positioned at the inner side of the positioning block, and the bottom of the stop dog and the bottom of the positioning block are connected through a return spring 65, so that the return spring can effectively control the sliding of the stop dog in the positioning block. The top of dog is hemispherical sealed bulb 66, and sealed bulb is located two seal block, and sealed bulb and seal block size match, the outage sets up in the inside of locating piece the latter half, and the below export and the transfer line of outage are linked together, and the top import and the dog middle part of outage are in the position of a certain height.
Further, in order to solve the problem that bubbles are likely to occur in the infusion process and other impurities exist in the liquid medicine, the precise filter 5 is further arranged, the precise filter 5 is arranged on an infusion tube between the drip cup 4 and the backflow prevention device 6, the precise filter 5 comprises a liquid medicine inlet 51, a liquid medicine outlet 52, a breathable film 53, an exhaust hole 54, a filter screen 55 and a filter film 56, the liquid medicine inlet and the liquid medicine outlet are communicated with the infusion tube, the exhaust hole is formed in one side of the upper end of the precise filter and communicated with the outside, the breathable film is covered on the exhaust hole to obstruct the liquid medicine and air, and meanwhile, the breathable film is used for ensuring that bubble gas in the liquid medicine can pass through the breathable film, and the liquid medicine cannot pass through the breathable film; the precision filter is internally divided into a left part and a right part by a partition plate 57, a filtering membrane is arranged at the middle lower part of the partition plate, a filtering net is arranged above the filtering membrane at the left side of the precision filter, and a plurality of acupuncture pieces 58 are vertically arranged on the filtering net and used for eliminating bubbles in the process of conveying liquid medicine.
Further, a flow rate regulator 7 is provided, which is provided on the infusion tube between the backflow prevention device and the injection needle.
Further, the top surface of the positioning block is arranged in an inclined structure.
Further, the inner lower end surface of the precision filter is provided with an inclined structure.
The foregoing is illustrative of embodiments of the present invention and it will be further appreciated by those skilled in the art that various modifications may be made without departing from the principles of the utility model and that such modifications are intended to be included within the scope of the appended claims.
Claims (5)
1. The anti-backflow venous transfusion device is characterized in that: the anti-backflow device comprises a bottle plug puncture needle, a protective cap, a transfusion tube, a drip cup, an anti-backflow device and a transfusion needle, wherein one end of the transfusion tube is connected with the bottle plug puncture needle, the other end of the transfusion tube is connected with the transfusion needle, the protective cap is arranged on the bottle plug puncture needle, the drip cup and the anti-backflow device are sequentially arranged on the transfusion tube, the upper end face and the lower end face of the anti-backflow device are provided with openings communicated with the transfusion tube, the anti-backflow device comprises a sealing block, a positioning block, a stop block and a liquid discharge hole, the positioning block is fixed on the inner side of the anti-backflow device, the top of the positioning block is provided with a through hole communicated with the transfusion tube, the sealing block is positioned on two inner sides of the through hole at the top of the positioning block, the stop block is positioned on the inner side of the positioning block, the top of the stop block is a hemispherical sealing ball head, the sealing ball head is positioned between the two sealing blocks, and the sealing ball head and the sealing blocks are matched in size, the liquid discharge hole is arranged in the lower half part of the positioning block, an outlet below the liquid discharge hole is communicated with the liquid conveying pipe, and an inlet above the liquid discharge hole and the middle part of the stop block are at a certain height position.
2. A backflow-preventing intravenous set according to claim 1, characterized in that: still be provided with precision filter, precision filter includes liquid medicine import, liquid medicine export, ventilated membrane, exhaust hole, filter screen and filtration membrane, the liquid medicine import with the liquid medicine export all is linked together with the transfer line, the exhaust hole sets up and communicates with each other with the external world in precision filter upper end one side, and the ventilated membrane covers and is used for separation liquid medicine and air in the exhaust hole, and two parts about precision filter is inside to be divided into by the division board, the division board is provided with filtration membrane in well lower part position, and the filter screen setting is in precision filter left side filtration membrane's top, and the vertical a plurality of acupuncture pieces that are provided with on the filter screen for eliminate the bubble of liquid medicine transportation process.
3. A backflow-preventing intravenous set according to claim 1, characterized in that: and a flow rate regulator is also arranged on the infusion tube between the backflow prevention device and the injection needle.
4. A backflow-preventing intravenous set according to claim 1, characterized in that: the top surface of the positioning block is arranged to be an inclined structure.
5. A backflow-preventing intravenous set according to claim 2, characterized in that: the inner lower end surface of the precision filter is arranged to be in an inclined structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122672754.XU CN216963177U (en) | 2021-11-03 | 2021-11-03 | Anti-backflow venous infusion apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122672754.XU CN216963177U (en) | 2021-11-03 | 2021-11-03 | Anti-backflow venous infusion apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216963177U true CN216963177U (en) | 2022-07-15 |
Family
ID=82344812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122672754.XU Expired - Fee Related CN216963177U (en) | 2021-11-03 | 2021-11-03 | Anti-backflow venous infusion apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216963177U (en) |
-
2021
- 2021-11-03 CN CN202122672754.XU patent/CN216963177U/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 |
Granted publication date: 20220715 |