CN108653872A - A kind of injection/Transfusion needle pipe preventing blood backflow - Google Patents
A kind of injection/Transfusion needle pipe preventing blood backflow Download PDFInfo
- Publication number
- CN108653872A CN108653872A CN201710195583.1A CN201710195583A CN108653872A CN 108653872 A CN108653872 A CN 108653872A CN 201710195583 A CN201710195583 A CN 201710195583A CN 108653872 A CN108653872 A CN 108653872A
- Authority
- CN
- China
- Prior art keywords
- needle
- syringe
- metal needle
- return rubber
- refers
- 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.)
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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
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
Abstract
Prevent the injection needle of blood backflow from using device of the flexible anti-return rubber tube as anti-backflow, anti-return rubber tube front end is flat, rear end is circular, when liquid flows to front end from rear end, it can pass through, when injecting liquid drug or conveying finish, flat tube portion is due to elastic automatic closure, the channel of blood backflow is closed, and leads to not flow back.
Description
Technical field
The invention belongs to medical instruments, more particularly, to a kind of injection/transfusion needle pipe.
Background technology
Injection needle tubing is a kind of relatively common medical instrument, while being also the bigger medical equipment of dosage, is passed through
Retrieval prevents the injection needle tubing of blood backflow from having a U.S. sunrise medical instrument using negative pressure（Kunshan）Co., Ltd's invention is prevented
Flow back prefilled syringe, the patent No.：2010206647845, the technical principle of the patent is that " inner wall of syringe front end includes one
It is centered around around medicine liquid outlet, conical surface portion in the form of a truncated cone, the front end face of rubber plug is cone, the front end face of the rubber plug
Cone angle is less than the cone angle of the conical surface portion.The prefilled syringe of the utility model is when injecting liquid completion, before rubber plug and syringe
It is linear contact between the inner wall at end, without apparent elastic deformation between rubber plug and syringe, does not will produce the power of resorption liquid;
Meanwhile rubber plug and syringe inner wall front end can avoid causing liquid reflux even blood backflow to arrive because generating negative pressure there is gap
The phenomenon that injector syringe ", still, it has been recognised by the inventors that can this part patent be realized and leave a question open, the inventor of the patent is simply
Emphasize it is linear contact between rubber plug and the inner wall of syringe front end, there be needle tubing syringe front end, and the active force according to power is mutual
Principle, if push rod returns when pulling out, the resorption power of generation is not enough to lead to blood backflow, then, when push rod advances, generation pushes away
Power is also not enough to enter injecting liquid drug, what is linear, and for general knowledge, there are one hermetic units for push rod needs, if
It is not very tight not have hermetic unit or hermetic unit, as described in 2010206647845 patents being linear contact,
It this may result in liquid outflow syringe when injection, such patent is that solve the problems, such as one, produces one and more serious asks
Topic.
Invention content
Advantageous effect：Prevent the injection needle of blood backflow from using flexible anti-return rubber tube as anti-backflow
Device, anti-return rubber tube front end be it is flat, rear end be it is circular, can be smooth when liquid flows to front end from rear end
Pass through, when injecting liquid drug or conveying finish, due to elastic automatic closure, the channel of blood backflow is closed, leads flat tube portion
Cause can not flow back.
Technical characteristic：A kind of injection/Transfusion needle pipe preventing blood backflow, it is characterized in that：
Prevent injection/Transfusion needle pipe of blood backflow mainly by metal needle, metal needle sealing part, syringe needle tail portion, anti-return rubber
Sebific duct forms,
The metal needle refers to the hollow metal needle pricked into human vas；
The metal needle sealing part is to be fixed metal needle to facilitate metal needle to use, and metal needle is fixed on metal needle
The center hole part of sealing part；
The syringe needle tail portion refers to the connection of the coupling part either metal needle and injection needle tube of metal needle and infusion sebific duct
Part；
The anti-return rubber tube refers to preventing blood backflow from having to syringe or the rubber tube for sebific duct of being infused, anti-return rubber tube
Two kinds of plans of establishment, 1, setting in needle tubing part, 2, setting in infusion sebific duct or syringe part,
Anti-return rubber tube is made of three parts, this three parts is pressing section, cylindrical parts, flat tube portion respectively；
The pressing section refers to the fixed part of anti-return rubber tube and needle tubing, and anti-return rubber tube and needle tubing are fixed
Afterwards, liquid can only pass through from the channel of cylindrical parts and flat tube portion；
The cylindrical parts refer to the rear end of anti-return rubber tube；
The flat tube portion refers to the front end of anti-return rubber tube, and cylindrical parts gradually excessively arrive flat tube portion, described
Front end refer to metal needle direction, the rubber refers to the natural rubber or synthetic rubber for having elasticity；
In two kinds of situation, infusion sebific duct refers to soft from infusion bag or infusion bottle to the plastic cement of syringe needle for the infusion sebific duct or syringe
Tube portion, syringe refer to the syringe part of syringe.
Description of the drawings
Attached drawing 1 is injection/Transfusion needle pipe principle schematic, and 1 is metal needle, and 2 be hemispherical portion, and 3 be metal needle sealing part
Point, 4 be syringe needle tail portion, and 5 be syringe needle tail portion pars infundibularis, and 6 be infusion sebific duct or syringe, and 7 be anti-return rubber tube；
Attached drawing 2 is injection/Transfusion needle pipe principle schematic, and 1 is metal needle, and 3 be metal needle sealing part, 6 be infusion sebific duct or
Syringe, 7 be anti-return rubber tube；
Attached drawing 3 is anti-return rubber tube structural schematic diagram, and 7A is pressing section, and 7B is cylindrical parts, and 7C is flat tube portion；
Attached drawing 4 is anti-return rubber tube structural schematic diagram, and 7A is pressing section, and 7B is cylindrical parts, and 7C is flat tube portion.
Specific implementation mode
Applicant is explained in conjunction with attached drawing, and attached drawing 1 is exactly to inject/Transfusion needle pipe principle schematic, needle tubing other parts
It with existing injection/Transfusion needle pipe, is not different in principle, unique difference is exactly to have added anti-return rubber tube, anti-return rubber
Sebific duct utilizes the soft rubber material of similar balloon to manufacture, and its rear end is circular hole, in this way, resistance is very when liquid infusion or injection
It is small, and its front end is planar as, once injecting liquid drug or infusion-completed, due to suction function, blood will flow back into syringe or
Infusion sebific duct, still, flat tube, since there are gravity for liquid itself, is softened in liquid infusing type, after liquid infusion or injection,
Flat tube portion is due to the presence of elasticity, and flat tube portion closure, the part of reflux is obstructed by flat tube, can not be further continued for defeated
Liquid glue pipe or syringe part reflux,
It should be noted that infusion sebific duct is plastic cement, plastic cement is plastic deformation, and rubber is elastic deformation, anti-return rubber
Pipe must be elastic deformation, that is, its raw material can only be soft rubber, some injections are not neutral, and soda acid salts
Substance has corrosiveness to rubber product, moreover, rubber product is processed using sublimed sulfur, anti-return rubber tube is needed using resistance to
The soft rubber product of soda acid makes, and can only be disposable, because cleaning is difficult, acid or alkaline liquid residue is for a long time
It is retained in anti-return rubber tube, there is adverse effect to the physicochemical property of anti-return rubber tube.
Injection is infused since drug directly reaches blood vessel, so, stringent for requirements such as air, impurity, the present invention exists
In, to existing infusion sebific duct or syringe parameter change very little, injection or infusion principle are not also modified, nor
How many cost can be increased, anti-return rubber tube has only been added on existing needle tubing.
Claims (1)
1. a kind of injection/Transfusion needle pipe preventing blood backflow, it is characterized in that：
Prevent injection/Transfusion needle pipe of blood backflow mainly by metal needle, metal needle sealing part, syringe needle tail portion, anti-return rubber
Sebific duct forms,
The metal needle refers to the hollow metal needle pricked into human vas；
The metal needle sealing part is to be fixed metal needle to facilitate metal needle to use, and metal needle is fixed on metal needle
The center hole part of sealing part；
The syringe needle tail portion refers to the connection of the coupling part either metal needle and injection needle tube of metal needle and infusion sebific duct
Part；
The anti-return rubber tube refers to preventing blood backflow from having to syringe or the rubber tube for sebific duct of being infused, anti-return rubber tube
Two kinds of plans of establishment, 1, setting in needle tubing part, 2, setting in infusion sebific duct or syringe part,
Anti-return rubber tube is made of three parts, this three parts is pressing section, cylindrical parts, flat tube portion respectively；
The pressing section refers to the fixed part of anti-return rubber tube and needle tubing, and anti-return rubber tube and needle tubing are fixed
Afterwards, liquid can only pass through from the channel of cylindrical parts and flat tube portion；
The cylindrical parts refer to the rear end of anti-return rubber tube；
The flat tube portion refers to the front end of anti-return rubber tube, and cylindrical parts gradually excessively arrive flat tube portion, described
Front end refer to metal needle direction, the rubber refers to the natural rubber or synthetic rubber for having elasticity；
In two kinds of situation, infusion sebific duct refers to soft from infusion bag or infusion bottle to the plastic cement of syringe needle for the infusion sebific duct or syringe
Tube portion, syringe refer to the syringe part of syringe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195583.1A CN108653872A (en) | 2017-03-29 | 2017-03-29 | A kind of injection/Transfusion needle pipe preventing blood backflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195583.1A CN108653872A (en) | 2017-03-29 | 2017-03-29 | A kind of injection/Transfusion needle pipe preventing blood backflow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108653872A true CN108653872A (en) | 2018-10-16 |
Family
ID=63785988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195583.1A Withdrawn CN108653872A (en) | 2017-03-29 | 2017-03-29 | A kind of injection/Transfusion needle pipe preventing blood backflow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108653872A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947092A (en) * | 2019-10-22 | 2020-04-03 | 浙江省北大信息技术高等研究院 | One-way valve and medical catheter with same |
| CN113797430A (en) * | 2021-08-18 | 2021-12-17 | 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） | Anorectal surgery ware of dosing |
-
2017
- 2017-03-29 CN CN201710195583.1A patent/CN108653872A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110947092A (en) * | 2019-10-22 | 2020-04-03 | 浙江省北大信息技术高等研究院 | One-way valve and medical catheter with same |
| CN113797430A (en) * | 2021-08-18 | 2021-12-17 | 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） | Anorectal surgery ware of dosing |
| CN113797430B (en) * | 2021-08-18 | 2023-09-15 | 温州医科大学附属第二医院（温州医科大学附属育英儿童医院） | Anorectal surgery drug feeder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181016 |