CN202740525U - Anti-backflow intravenous infusion apparatus - Google Patents

Anti-backflow intravenous infusion apparatus Download PDF

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Publication number
CN202740525U
CN202740525U CN 201220489102 CN201220489102U CN202740525U CN 202740525 U CN202740525 U CN 202740525U CN 201220489102 CN201220489102 CN 201220489102 CN 201220489102 U CN201220489102 U CN 201220489102U CN 202740525 U CN202740525 U CN 202740525U
Authority
CN
China
Prior art keywords
infusion
check valve
tube
backflow
needle
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
Application number
CN 201220489102
Other languages
Chinese (zh)
Inventor
郭文贤
何红燕
刘秀娴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
First Affiliated Hospital of Shantou University Medical College
Original Assignee
First Affiliated Hospital of Shantou University Medical College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by First Affiliated Hospital of Shantou University Medical College filed Critical First Affiliated Hospital of Shantou University Medical College
Priority to CN 201220489102 priority Critical patent/CN202740525U/en
Application granted granted Critical
Publication of CN202740525U publication Critical patent/CN202740525U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an anti-backflow intravenous infusion apparatus capable of preventing the blood in blood vessels from flowing back to an infusion tube. The anti-backflow intravenous infusion apparatus comprises a needle, wherein an infusion hose is connected with the needle; a connector connected with an infusion tube is arranged at the end part of the infusion hose; a check valve device is arranged on the connector; an arc blocking sheet connected with the connector tube wall is arranged on the check valve device; and one side of a membrane is connected with the connector tube wall, and the other side is a free end overlapped on the arc blocking sheet. In normal infusion, the membrane in the check valve device is automatically opened, and the infusion is not influenced; and when the pressure of the infusion needle is reduced, the membrane in the check valve device automatically clings to the arc blocking sheet to block the backflow of the liquid medicine, thereby preventing the blood in blood vessels from flowing back to the infusion tube.

Description

The counterflow-preventing intravenous transfusion device
Technical field
This utility model relates to medical apparatus and instruments, relates in particular to the transfusion device of used for intravenous injection.
Background technology
Require in the infusion process infusion bottle is in the higher position, make medicinal liquid in the transfusion needle obtain pressure greater than vein blood vessel with height fall, medicinal liquid can flow into blood vessel, exhausts but work as the infusion bottle medicinal liquid, and the tube for transfusion liquid level descends, medicinal liquid pressure drop in the transfusion needle descends thereupon, when medicinal liquid pressure during less than vascular pressure, the blood in the blood vessel can flow out in the tube for transfusion, as untimely with blood backflow in blood vessel, the blood that flows out can solidify caking, unnecessary risk can occur when again infusing blood vessel.Blood back flow when the patient activity health, also can occur accidentally and enter tube for transfusion.
Summary of the invention
The purpose of this utility model is to provide a kind of and prevents that blood back flow in the hemostatic tube enters the counterflow-preventing intravenous transfusion device of liquid-transport pipe-line.
This utility model counterflow-preventing intravenous transfusion device comprises syringe needle, the infusion tube connecting needle, and there is the joint that connects tube for transfusion the infusion tube end, and check valve apparatus is arranged on the joint.
Above-mentioned check valve apparatus has an arc block plate that is connected to the joint tube wall, and a side of diaphragm is connected to the joint tube wall, and opposite side is free end and is superimposed upon on the arc block plate.
This utility model is when normal infusion, and the diaphragm in the check valve apparatus is opened automatically, does not affect transfusion, when the transfusion needle pressure decreased, diaphragm automatic paste tightening arc block plate in the check valve apparatus stops the adverse current of medicinal liquid, therefore can not cause blood backflow in the blood vessel in tube for transfusion.
Description of drawings
Fig. 1 is this utility model intravenous transfusion device schematic diagram.
Fig. 2 is arc block plate and diaphragm schematic diagram in the check valve apparatus.
The specific embodiment
As shown in the figure, counterflow-preventing intravenous transfusion device of the present utility model comprises syringe needle 1, infusion tube 2 connecting needles 1, there is the joint 3 that connects tube for transfusion infusion tube 2 ends, check valve apparatus 4 is arranged on the joint 3, joint 3 upwards connects tube for transfusion 8, drips kettle 9 and medicinal liquid bottle 10, also has speed regulator 11 on the tube for transfusion 8.
Shown in Figure 2, check valve apparatus has an arc block plate 5 that is connected to the tube wall of joint 3, and a side of soft diaphragm 6 is connected to the tube wall of joint 3, and opposite side is free end 7 and is superimposed upon on the arc block plate 5.When the medicinal liquid following current was flowed, the free end 7 of diaphragm 6 left arc block plate 5 along liquid flow, and when the medicinal liquid flow velocity slows down when stopping, the free end 7 of diaphragm 6 is added to and stops the medicinal liquid adverse current on the arc block plate 5, and the blood in the blood vessel just can not flow into infusion tube 2 yet.

Claims (2)

1. a counterflow-preventing intravenous transfusion device comprises syringe needle, the infusion tube connecting needle, and there is the joint that connects tube for transfusion the infusion tube end, it is characterized in that on the described joint check valve apparatus being arranged.
2. described counterflow-preventing intravenous transfusion device according to claim 1 is characterized in that, described check valve apparatus has an arc block plate that is connected to the joint tube wall, and a side of diaphragm is connected to the joint tube wall, and opposite side is free end and is superimposed upon on the arc block plate.
CN 201220489102 2012-09-24 2012-09-24 Anti-backflow intravenous infusion apparatus Expired - Fee Related CN202740525U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220489102 CN202740525U (en) 2012-09-24 2012-09-24 Anti-backflow intravenous infusion apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220489102 CN202740525U (en) 2012-09-24 2012-09-24 Anti-backflow intravenous infusion apparatus

Publications (1)

Publication Number Publication Date
CN202740525U true CN202740525U (en) 2013-02-20

Family

ID=47699983

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220489102 Expired - Fee Related CN202740525U (en) 2012-09-24 2012-09-24 Anti-backflow intravenous infusion apparatus

Country Status (1)

Country Link
CN (1) CN202740525U (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103505772A (en) * 2013-09-30 2014-01-15 苏州市雅思精密模具有限公司 Backflow prevention infusion tube
CN104941022A (en) * 2015-06-19 2015-09-30 夏瑾梅 Novel anti-reverse flow precise infusion apparatus
CN104984435A (en) * 2015-07-24 2015-10-21 朱文和 Infusion tube capable of preventing blood backflow
CN106512151A (en) * 2016-12-22 2017-03-22 江苏工程职业技术学院 Infusion tube with high safety
CN113164673A (en) * 2018-08-23 2021-07-23 B.布劳恩梅尔松根股份公司 Medical infusion system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103505772A (en) * 2013-09-30 2014-01-15 苏州市雅思精密模具有限公司 Backflow prevention infusion tube
CN104941022A (en) * 2015-06-19 2015-09-30 夏瑾梅 Novel anti-reverse flow precise infusion apparatus
CN104984435A (en) * 2015-07-24 2015-10-21 朱文和 Infusion tube capable of preventing blood backflow
CN106512151A (en) * 2016-12-22 2017-03-22 江苏工程职业技术学院 Infusion tube with high safety
CN113164673A (en) * 2018-08-23 2021-07-23 B.布劳恩梅尔松根股份公司 Medical infusion system

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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: 20130220

Termination date: 20130924