CN105771029B - Anti-reflux positive pressure device - Google Patents
Anti-reflux positive pressure device Download PDFInfo
- Publication number
- CN105771029B CN105771029B CN201610278161.6A CN201610278161A CN105771029B CN 105771029 B CN105771029 B CN 105771029B CN 201610278161 A CN201610278161 A CN 201610278161A CN 105771029 B CN105771029 B CN 105771029B
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- China
- Prior art keywords
- plug
- shell
- positive pressure
- interface
- pressure device
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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
- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 19
- 239000013013 elastic material Substances 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 14
- 239000003814 drug Substances 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 2
- 239000008280 blood Substances 0.000 abstract description 11
- 210000004369 blood Anatomy 0.000 abstract description 11
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 abstract description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract description 9
- 229960002897 heparin Drugs 0.000 abstract description 9
- 229920000669 heparin Polymers 0.000 abstract description 9
- 239000011780 sodium chloride Substances 0.000 abstract description 8
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 208000015181 infectious disease Diseases 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000001802 infusion Methods 0.000 description 13
- 210000004761 scalp Anatomy 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 210000004204 blood vessel Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 241001411320 Eriogonum inflatum Species 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M39/12—Tube connectors; Tube couplings for joining a flexible tube to a rigid attachment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/10—Tube connectors; Tube couplings
- A61M2039/1077—Adapters, e.g. couplings adapting a connector to one or several other connectors
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses an anti-reflux positive pressure device, which comprises an upper joint, a lower joint, a shell and a plug made of elastic materials, wherein the plug is arranged in the shell in an adaptive manner, the upper end of the shell is provided with a short tubular upper interface, the lower end of the shell is provided with a short tubular lower interface, the plug mainly comprises three sections of cylinders with large middle parts and small two ends, the end surfaces of the cylinders with smaller two ends of the plug are respectively and tightly attached to the edges of the upper interface and the lower interface to seal the upper interface and the lower interface, the upper joint and the lower joint respectively mainly comprise a connecting sleeve and a connecting pipe penetrating through the center of the connecting sleeve and used for penetrating into a transfusion pipeline, and the pipe orifice of the connecting pipe is right opposite to the two end surfaces of the plug and can be abutted against the two end surfaces of the plug. The invention can realize the function of anti-reflux, the catheter and the needle tip can not be blocked, the related blood infection chance of the catheter is effectively reduced, saline flushing is not needed, the use of heparin is reduced, the operation of pressurizing and sealing the catheter by medical personnel is omitted, the workload of the medical personnel is greatly reduced, the use is convenient, and the working efficiency is improved.
Description
Technical Field
The invention relates to a medical consumable for clinical transfusion, in particular to an anti-reflux positive pressure device which can be used with a transfusion device and an indwelling needle, and has the advantages of safety, reliability and good clinical use effect.
Background
The medical infusion apparatus and the indwelling needle are used together to carry out intravenous drip of medicine, which is an effective treatment means commonly used in clinic. The indwelling needle is a venous indwelling needle, also called as venous trocar, and the core components of the indwelling needle comprise a catheter which can be indwelling in a human blood vessel and a puncture guiding needle core. When the flexible catheter is used, the catheter and the needle core are punctured into a blood vessel together, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the flexible catheter is left in the blood vessel so as to carry out infusion treatment.
According to the related requirements, various indwelling needles used clinically need to adopt modes of tube sealing, pressurization and the like to achieve the purpose of non-blockage of a catheter and a needle core when in use. When the patient finishes transfusion, the transfusion device and the indwelling needle need to be separated, at the moment, medical personnel wash the indwelling needle by using normal saline, and the indwelling needle is sealed and pressurized by adopting heparin to realize anti-reflux.
However, the mode of preventing backflow by sealing and pressurizing has the following defects in the use process:
the anti-backflow device has the advantages that after heparin in the syringe is used for pressurizing the indwelling needle, negative pressure is generated when the needle head of the syringe is pulled out, so that venous blood returns into the indwelling needle, the catheter and the needle core are directly blocked due to the instability of anti-backflow, and the probability of catheter-related blood infection is increased.
And secondly, when the indwelling needle is reused, medical personnel need to wash the indwelling needle to ensure that the indwelling needle is unblocked and then transfused, so that the workload of the medical personnel is increased, the use is inconvenient, and the working efficiency is reduced.
The saline and the heparin are needed when the tube is sealed and pressurized, and the tube is flushed when the indwelling needle is used next time, so that the treatment cost of a patient is increased.
Disclosure of Invention
The invention aims to provide the anti-reflux positive pressure device which has the advantages of simple structure, low manufacturing cost, safety, reliability and convenient use, can greatly reduce the workload of medical care personnel, reduce the treatment cost of patients, reduce the blood infection chance related to catheters and improve the working efficiency.
The above object of the present invention is achieved by the following measures: the anti-reflux positive pressure device is characterized in that: including the top connection that is used for connecting the transfusion system pipeline, be used for connecting the casing of keeping somewhere needle pipeline's lower clutch, barrel form and the stopper of making by elastic material, the stopper adaptation is installed in the casing, the upper end of casing has short pipy last interface, and the lower extreme of casing has short pipy lower interface, the stopper mainly comprises the little three-section cylinder in big both ends in the middle, and the terminal surface of the less cylinder in stopper both ends closely laminates respectively in the mouth edge of last interface and lower interface and blocks up interface and lower interface, top connection and lower clutch mainly comprise connecting sleeve and the connecting pipe that passes the connecting sleeve center and be used for penetrating the infusion pipeline respectively, and the mouth of pipe of connecting pipe just can support and press on it to the both ends face of stopper, top connection and lower clutch twist on top connection and lower interface through connecting sleeve respectively, the connecting pipe of top connection upwards extrudes the both ends face of stopper respectively, the plug is in a spiral shape under the action of opposite torque force, so that a gap for liquid medicine flowing is formed between the plug and the shell, and after the upper connector is detached, the plug is restored under the action of self elastic restoring force so as to enable the upper end face of the plug to block the upper connector again.
The working principle of the invention is as follows: the connecting sleeve of the upper joint and the connecting sleeve of the lower joint are respectively screwed on the upper joint and the lower joint, the connecting pipe of the upper joint downwards extrudes the upper end face of the plug, the connecting pipe of the lower joint upwards extrudes the lower end face of the plug, under the action force of the rotation and extrusion of the connecting pipe, the pipe orifice of the connecting pipe is staggered with the end face of the plug, so that the connecting pipe connected with the infusion pipeline is communicated with the shell, meanwhile, the plug is twisted into a twist shape, a gap for flowing liquid medicine is formed between the plug and the shell, when the infusion apparatus is separated from the upper interface after the liquid is infused by a patient, the plug pressed downwards by the upper joint automatically recovers under the action of the self elastic restoring force, the pressure for downwards extruding the liquid medicine remained in the shell is generated in the recovering process, so that the remained liquid medicine is extruded into the vein of the patient, after the plug automatically recovers, the upper end face of the plug is tightly matched with the upper interface of the shell to achieve the effect of preventing backflow, at this time, the remaining drug solution in the indwelling needle and venous blood reach equilibrium so that the catheter and the needle tip do not become clogged.
The invention can realize the function of anti-reflux, the residual liquid in the indwelling needle and venous blood reach balance, so that the catheter and the needle point can not be blocked, the related blood infection chance of the catheter can be effectively reduced, the catheter and the scalp needle can be kept smooth, saline flushing is not needed, the use of heparin is not needed, the operation of pressurizing and sealing the catheter by medical personnel is omitted, and when the scalp needle is used again, the saline flushing is not needed, the workload of the medical personnel is greatly reduced, the scalp needle is convenient to use, the working efficiency is improved, and the medical cost of a patient is correspondingly reduced because the saline flushing and the use of heparin are omitted. In addition, the invention has simple structure and low manufacturing cost, can realize large-scale production, and is suitable for wide popularization and application.
As an improvement of the invention, a reset structure is arranged on the inner wall of the shell, the reset structure is in close contact with the outer wall of the plug, and after the upper joint is removed, the plug is completely restored to the original state under the action of the self elastic restoring force and the reset structure.
As a preferred embodiment of the present invention, the reset structure employs at least three ribs, the ribs are arranged along the axial direction of the inner wall of the housing, and the ribs tightly abut against the outer wall of the plug.
The convex ribs are uniformly distributed along the circumference of the inner wall of the shell.
In one embodiment of the present invention, the rib and the housing are integrally formed.
As a preferred embodiment of the present invention, the housing and the plug are formed in one piece. The invention has the advantages of one-step molding, simple manufacturing process and capability of greatly reducing the cost.
As an implementation mode of the invention, the three sections of the cylinders of the plug are all cylinders, and the diameters of the smaller cylinders at the two ends are the same.
As a preferred embodiment of the present invention, the upper connector and the lower connector have external threads, and the connecting sleeves of the upper connector and the lower connector have internal threads, and the external threads and the internal threads are matched.
The shell is made of transparent materials, such as ABS materials.
The plug is made of silica gel material, and can also be made of other elastic materials.
Compared with the prior art, the invention has the following remarkable effects:
the catheter has the advantages that the backflow prevention effect can be achieved, residual liquid in the indwelling needle and venous blood are balanced, the catheter and the needle point are not blocked, and the probability of catheter-related blood infection can be effectively reduced.
The invention can keep the catheter and the scalp needle smooth without obstruction, does not need saline flushing and reduces the use of heparin, saves the operation of pressurizing and sealing the catheter for medical personnel, does not need flushing when being used again, greatly reduces the workload of the medical personnel, is convenient to use, improves the working efficiency, and correspondingly reduces the medical cost of patients due to the omission of saline flushing and the reduction of the use of heparin.
The invention has simple structure, low manufacturing cost, one-step molding of the shell and the plug, simple manufacturing process, realization of large-scale production, wide application to medical institutions such as clinics, hospitals and the like, and wide popularization and application.
Drawings
The invention is described in further detail below with reference to the figures and the specific embodiments.
FIG. 1 is a schematic view of the present invention installed in an infusion set tubing;
FIG. 2 is a cross-sectional view of an exploded structure of the housing, upper and lower connectors of the present invention;
fig. 3 is a partially enlarged schematic view of a in fig. 2.
Detailed Description
As shown in fig. 1 to 3, the anti-reflux positive pressure device of the present invention comprises an upper connector 2 for connecting an infusion set pipeline 1, a lower connector 4 for connecting an indwelling needle pipeline 3, a barrel-shaped housing 5 and a plug 6 made of an elastic material, wherein in the present embodiment, the elastic material is a silica gel material, and the plug 6 is fittingly installed in the housing 5 and is formed in one step. In this embodiment, the housing 5 is made of a transparent material, specifically, an ABS material. The upper end of the shell 5 is provided with a short tubular upper connector 7, the lower end of the shell 5 is provided with a short tubular lower connector 8, the plug 6 mainly comprises three sections of cylinders with a large middle part and small two ends, in the embodiment, the three sections of cylinders are cylinders, the diameters of the cylinders with smaller two ends are the same, the end surfaces of the cylinders with smaller two ends of the plug 6 are tightly attached to the edges of the upper connector 7 and the lower connector 8 respectively to seal the upper connector 7 and the lower connector 8, and in the embodiment, the end surfaces of the cylinders with smaller two ends of the plug 6 are flush with the edges of the upper connector 7 and the lower connector 8. Be equipped with the structure that resets on the inner wall of casing 5, the outer wall in close contact with of structure and stopper stifled 6 that resets, top connection 2 and lower clutch 4 mainly by connecting sleeve 9 respectively with pass connecting sleeve 9 center and be used for penetrating the connecting pipe 10 of infusion pipeline and constitute, the mouth of pipe of connecting pipe 10 just to with the stopper two terminal surfaces of stifled 6 and can support and press on it, top connection 7 and lower interface 8 have the external screw thread, top connection 2 and lower clutch 4's connecting sleeve 9 have the internal thread, external screw thread and internal thread looks adaptation. The upper connector 2 and the lower connector 4 are screwed on the upper connector 7 and the lower connector 8 respectively through the connecting sleeve 9, the connecting pipe 10 of the upper connector 2 is downward, the connecting pipe 10 of the lower connector 4 is upward to respectively extrude two end faces of the plug 6, meanwhile, the plug 6 is in a spiral shape under the action of opposite torsion, a gap for liquid medicine flowing is formed between the plug 6 and the shell 5, and after the upper connector 2 is detached, the plug 6 is completely restored to the original shape under the action of self elastic restoring force and a restoring structure, so that the upper end face of the plug 6 is plugged on the upper connector 7 again.
In this embodiment, the restoring structure is formed by the rib 11, and the rib 11 and the housing 5 are integrally formed. The convex ribs 11 are axially arranged along the inner wall of the shell 5, the number of the convex ribs 5 is at least three, and the convex ribs 5 are uniformly distributed along the circumference of the inner wall of the shell.
When the invention is used, the invention is connected to an infusion apparatus, and the infusion apparatus generally comprises a bottle stopper puncture outfit 14, an infusion pipeline 1 of the infusion apparatus, an air filter 15, a Murphy's tube 16 with a filter, a flow rate regulator 17, a luer connector and a vein scalp needle. When the invention is connected, the indwelling needle 13 replaces a venous scalp needle, the upper connector and the lower connector of the invention are one of luer connectors in the prior art, and the invention is specifically connected behind a flow rate regulator 17 on an infusion set and in front of the indwelling needle 13.
The working process of the invention is as follows:
the connecting pipe of the upper joint extrudes the upper end face of the plug downwards, the connecting pipe of the lower joint extrudes the lower end face of the plug upwards, the connecting pipe and the end faces of the plug are staggered under the action force of the rotating connecting pipe and extruding the two end faces of the plug, the connecting pipe for connecting a transfusion pipeline is communicated with the shell, and the plug is twisted into a twist shape, so that a gap for liquid medicine flowing is formed between the plug and the shell.
The utility model discloses a medical device, including the needle, the needle is kept somewhere in the needle, the patient has lost the liquid after the transfusion, when being used for connecting the top connection of transfusion system pipeline and last interface separation, the stopper that is pushed down by the top connection is automatic reconversion under self elastic restoring force and reset structure's effect, can produce the pressure of remaining liquid medicine extrusion downwards in the casing at the in-process of stopping up reconversion, thereby extrude remaining liquid medicine to the patient's vein in, after stopping up reconversion, thereby the up end that stops up closely cooperates with the last interface of casing and reaches the effect of preventing against current, at this moment, it reaches the balance to keep somewhere remaining liquid and venous blood in the needle and makes catheter and needle point can not block up, can effectively reduce the chance that catheter correlation blood infects.
When the medical connector is used again, the medical connector can be directly used only by carrying out conventional disinfection treatment on the upper connector, the workload of medical workers is greatly reduced, the medical connector is convenient to use, and the working efficiency is greatly improved. Moreover, after the transfusion is finished, saline and heparin are not needed, and when the remaining needle is used again, a tube is not needed to be washed, so that the treatment cost of a patient is reduced.
The embodiments of the present invention are not limited to the above-mentioned embodiments, and other embodiments of the reset structure, the specific structure of the housing and the plug, and the like according to the present invention can be made without departing from the basic technical idea of the present invention according to the general technical knowledge and the conventional means in the field. Therefore, the present invention may be modified, replaced or changed in various other ways, which fall within the scope of the present invention.
Claims (10)
1. The anti-reflux positive pressure device is characterized in that: including the top connection that is used for connecting the transfusion system pipeline, be used for connecting the casing of the lower clutch, barrel form of keeping somewhere the needle pipeline and the stopper of making by elastic material, stopper stifled adaptation is installed in the casing, the upper end of casing has short pipy last interface, and the lower extreme of casing has short pipy lower clutch, stopper stifled mainly comprises the little three-section cylinder in middle big both ends, and the terminal surface that the less cylinder in stopper both ends closely laminates respectively in the mouth edge of last interface and lower clutch and blocks up interface and lower clutch, and the terminal surface that the less cylinder in stopper both ends is along leveling mutually with the mouth edge of last interface and lower clutch, top connection and lower clutch mainly comprise connecting sleeve and the connecting pipe that passes connecting sleeve center and be used for penetrating the transfusion pipeline respectively, and the connecting pipe just to the both ends face of stopper and can support and press on it, top connection and lower clutch twist on top connection and lower clutch through connecting sleeve respectively, the connecting pipe of the upper joint downwards and the connecting pipe of the lower joint upwards respectively extrude two end faces of the plug, the plug is in a spiral shape under the action of opposite torsion, a gap for liquid medicine flowing is formed between the plug and the shell, and after the upper joint is dismounted, the plug is restored under the action of self elastic restoring force to enable the upper end face of the plug to block the upper joint again.
2. The anti-reflux positive pressure device of claim 1, wherein: be equipped with reset structure on the inner wall of casing, reset structure and stifled outer wall in close contact with of stopper, after detaching the top connection, the stopper restores to the original state completely under self elastic restoring force and reset structure's effect.
3. The anti-reflux positive pressure device of claim 2, wherein: the reset structure adopts three convex ribs at least, the convex ribs are arranged along the axial direction of the inner wall of the shell, and the convex ribs tightly support against the outer wall of the plug.
4. The anti-reflux positive pressure device of claim 3, wherein: the convex ribs are uniformly distributed along the circumference of the inner wall of the shell.
5. The anti-reflux positive pressure device of claim 4, wherein: the convex ribs and the shell are integrally manufactured.
6. The backflow prevention positive pressure device according to any one of claims 1 to 5, wherein: the shell and the plug are molded at one time.
7. The anti-reflux positive pressure apparatus of claim 6, wherein: the three sections of the plugged cylinders are all cylinders, and the diameters of the smaller cylinders at the two ends are the same.
8. The anti-reflux positive pressure apparatus of claim 7, wherein: go up interface and interface down and have the external screw thread, the adapter sleeve of top connection and lower clutch has the internal thread, external screw thread and internal thread looks adaptation.
9. The anti-reflux positive pressure device of claim 8, wherein: the shell is made of transparent materials.
10. The anti-reflux positive pressure device of claim 9, wherein: the plug is made of a silica gel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278161.6A CN105771029B (en) | 2016-04-29 | 2016-04-29 | Anti-reflux positive pressure device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610278161.6A CN105771029B (en) | 2016-04-29 | 2016-04-29 | Anti-reflux positive pressure device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105771029A CN105771029A (en) | 2016-07-20 |
| CN105771029B true CN105771029B (en) | 2022-09-27 |
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ID=56399048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610278161.6A Expired - Fee Related CN105771029B (en) | 2016-04-29 | 2016-04-29 | Anti-reflux positive pressure device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105771029B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109011005B (en) * | 2018-08-06 | 2023-07-18 | 江苏省人民医院（南京医科大学第一附属医院） | Sterile anti-reflux indwelling needle easy to puncture |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038983A (en) * | 1976-01-26 | 1977-08-02 | Baxter Travenol Laboratories, Inc. | Fluid infusion pump |
| CN2868321Y (en) * | 2006-01-05 | 2007-02-14 | 黎阳 | Remaining needle transfusion system structure for preventing blood from back-flowing |
| CN103212154A (en) * | 2012-01-21 | 2013-07-24 | 美昕医疗器械（上海）有限公司 | One-way positive valve |
| CN103285450B (en) * | 2013-03-25 | 2015-05-27 | 南通恒泰医疗器材有限公司 | Multifunctional indwelling needle |
| CN203342121U (en) * | 2013-05-27 | 2013-12-18 | 江西丰临医用器械有限公司 | Positive pressure connector |
| CN104162202B (en) * | 2014-06-10 | 2017-10-03 | 丁培琪 | Anti-reflux venous indwelling needle |
| CN204734799U (en) * | 2015-06-25 | 2015-11-04 | 上海上医康鸽医用器材有限责任公司 | Needleless infusion prevents that needle is kept somewhere to vein against current |
| CN205041878U (en) * | 2015-08-28 | 2016-02-24 | 北京天地和协科技有限公司 | Infusion of needleless malleation connects |
| CN205145280U (en) * | 2015-10-10 | 2016-04-13 | 王学博 | Malleation does not have adapter |
-
2016
- 2016-04-29 CN CN201610278161.6A patent/CN105771029B/en not_active Expired - Fee Related
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|---|---|
| CN105771029A (en) | 2016-07-20 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20181218 Address after: No. 1, South Ring Road, Jingzhou, Hubei Province Applicant after: Yangtze University Applicant after: Guang Ling Address before: 434023 Room 502, 14 faculty, Medical College of Changjiang University, No. 1 Nanhuan Road, Jingzhou City, Hubei Province Applicant before: Guang Ling |
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Granted publication date: 20220927 |