CN102091378B - Retaining needle capable of being closed by virtue of positive pressure and displaying blood back - Google Patents
Retaining needle capable of being closed by virtue of positive pressure and displaying blood back Download PDFInfo
- Publication number
- CN102091378B CN102091378B CN 201110038953 CN201110038953A CN102091378B CN 102091378 B CN102091378 B CN 102091378B CN 201110038953 CN201110038953 CN 201110038953 CN 201110038953 A CN201110038953 A CN 201110038953A CN 102091378 B CN102091378 B CN 102091378B
- Authority
- CN
- China
- Prior art keywords
- malleation
- elastica
- switch
- remaining needle
- blood back
- 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
- 239000008280 blood Substances 0.000 title claims abstract description 26
- 210000004369 blood Anatomy 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 210000003462 vein Anatomy 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 abstract 4
- 230000000694 effects Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 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 description 1
- 230000023555 blood coagulation Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
Images
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a retaining needle capable of being closed by virtue of positive pressure and displaying blood back. The retaining needle provided by the invention comprises a vein retaining tube, a seal plug, a flexible connecting tube, an elastic membrane and a positive pressure switch, wherein the downstream end in the liquid flow direction of the flexible connecting tube is connected with the retaining needle; the upstream end in the liquid flow direction of the flexible connecting tube is connected with the positive pressure switch; and the elastic membrane is installed in the positive pressure switch, when the positive pressure switch is switched on, the elastic membrane is in a loose state, and when the positive pressure switch is closed, the elastic membrane is pressed so as to seal a pipeline, simultaneously the liquid in the pipeline of the flexible connecting rod is extruded effectively, a more sensitive blood back indicating function in venipuncture is improved, and a blood release flow-back function for squeezing the liquid in the pipeline when the retaining needle is closed is achieved.
Description
Technical field
The present invention relates to a kind of blood back demonstration malleation and close remaining needle.Particularly relate to a kind of with sensitive blood-return puncture auxiliary judgment function with just compressing switch and when closing, liquid is extruded the remaining needle of the function of tube for transfusion.
Technical background
At present, the bad and low patient of blood pressure for the vein condition, venipuncture judgement difficulty is large, and easily failure, cause the patient suffering, delay treatment.When finishing transfusion, when closing remaining needle, existing common product will inject heparin again and prevent the problem such as blood back and frozen plug in pipeline, have the product that adds positive pressure connector to play certain malleation effect reliably or said the balance joint, the liquid intravasation of externally extruding that in fact lacks liquid in certain pipeline is the purpose of design product.
So in the problems referred to above stage, proposed more perfect functional design, made the clinical practice remaining needle more simple easily reliable.
Summary of the invention
In order to solve the existing defective of above-mentioned prior art, the invention provides a kind of blood back demonstration malleation and close remaining needle, comprise vein detaining catheter, sealing-plug, soft connecting leg, elastica and just compressing switch, the downstream of soft connecting leg flow direction connects remaining needle, the upstream extremity connection of soft connecting leg flow direction just compresses switch, in elastica was arranged on and just compresses switch, during the malleation switch opens, elastica was in relaxed state, and the oppressed shutoff pipeline of elastica when closing is just compressing switch; Just compressing switch is made of parts such as malleation Switch main body, elastica, upper cover and compression legs, and elastica covers on the interior groove of malleation Switch main body, and there is the compression leg that can pass in and out at the edge by upper cover and malleation Switch main body pressing sealing outside elastica; When compression leg compressing elastica enters in groove on the malleation Switch main body, the edge of the groove on elastica sealing malleation Switch main body also presses to the liquid in groove in the soft connecting leg of remaining needle, the needle point that makes liquid be extruded remaining needle is realized the purpose that malleation is extruded, and closes simultaneously the remaining needle inlet; During the malleation switch opens, compression leg shifts out, and is gapped between compression leg and elastica, and elastica runs into when fluid pressure raises in pipeline outwards (compression leg direction) expansion and leaves groove on the malleation Switch main body, realizes the blood back Presentation Function of remaining needle afterbody; Blood back demonstration and malleation are closed two functions and are integrated in a structure and share an elastica; Elastica covers on groove on the malleation Switch main body, and edge seal is in when just compressing switch when closing, and compression leg compressing elastica can not outwards expand elastica again, namely there is no the blood back Presentation Function.
Good effect of the present invention is: improved the ability of the blood back auxiliary judgment of venipuncture, more for difficult patient, better puncture chance of success has been arranged, can realize more positively also that when keeping somewhere malleation extrudes the purpose of liquid, prevented blood reflux stream.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing, in accompanying drawing:
Fig. 1 is the structural representation that blood back demonstration malleation proposed by the invention is closed remaining needle;
The specific embodiment
As shown in Figure 1, structural representation when showing that for blood back proposed by the invention malleation is closed the remaining needle use, comprise vein detaining catheter 11, sealing-plug 8, soft connecting leg 7, elastica 2 and just compressing switch, the downstream of soft connecting leg 7 flow directions connects needle seat of remaining needle 9, the upstream extremity connection of soft connecting leg 7 flow directions just compresses switch, in elastica 2 was arranged on and just compresses switch, during the malleation switch opens, elastica 2 was in relaxed state, and the oppressed shutoff pipeline of elastica 2 when closing is just compressing switch; Just compressing switch is made of parts such as malleation Switch main body 1, elastica 2, upper cover 3 and compression legs 5, and elastica 2 covers on groove in malleation Switch main body 1, and the edge is by upper cover 3 and the 1 pressing sealing of malleation Switch main body, and there is the compression leg 5 that can pass in and out in elastica 2 outsides; When compression leg 5 compressing elasticas 2 enter in groove on malleation Switch main body 1, the edge of the groove on elastica 2 sealing malleation Switch main bodies 1 also presses in the soft connecting leg of remaining needle 7 with the liquid in groove, make liquid be extruded the purpose that vein detaining catheter 11 realizes that malleation is extruded, close simultaneously the remaining needle inlet; During the malleation switch opens, compression leg 5 shifts out, gapped between compression leg 5 and elastica 2, elastica 2 runs into when fluid pressure raises in pipeline outwards (compression leg 5 directions) expansion and leaves groove on malleation Switch main body 1, realizes the blood back Presentation Function of remaining needle afterbody; Blood back demonstration and malleation are closed two functions and are integrated in a structure and share an elastica 2; Elastica 2 covers on groove on the malleation Switch main body, and edge seal is in when just compressing switch when closing, and compression leg 5 compressing elasticas 2 can not outwards expand elastica 2 again, namely there is no the blood back Presentation Function.
The present invention has improved the ability of the blood back auxiliary judgment of venipuncture really, more for difficult patient, better puncture chance of success is arranged, can realize more positively also that when keeping somewhere malleation extrudes the purpose of liquid, prevent blood reflux stream and the blood coagulation that causes and the problem of stopping up needle tubing.
Claims (4)
1. a blood back demonstration malleation is closed remaining needle, comprise vein detaining catheter, sealing-plug, soft connecting leg and just compressing switch, the downstream of soft connecting leg flow direction connects remaining needle, the upstream extremity connection of soft connecting leg flow direction just compresses switch, in just compressing switch, elastica is installed, this is just compressing switch and is being made of malleation Switch main body, elastica, upper cover and compression leg, elastica covers on the interior groove of malleation Switch main body, there is the compression leg that can pass in and out at the edge of elastica by upper cover and malleation Switch main body pressing sealing outside elastica; During the malleation switch opens, elastica is in relaxed state, and the oppressed shutoff pipeline of elastica when closing is just compressing switch.
2. blood back demonstration malleation as claimed in claim 1 is closed remaining needle, it is characterized in that, when compression leg compressing elastica enters in groove on the malleation Switch main body, the edge of the groove on elastica sealing malleation Switch main body also presses to the liquid in groove in the soft connecting leg of remaining needle, the needle point that makes liquid be extruded remaining needle is realized the purpose that malleation is extruded, and closes simultaneously the remaining needle inlet.
3. blood back demonstration malleation as claimed in claim 1 is closed remaining needle, it is characterized in that, during the malleation switch opens, compression leg shifts out, gapped between compression leg and elastica, elastica runs into can outwards expand when fluid pressure raises in pipeline leaves groove on the malleation Switch main body, realizes the blood back Presentation Function of remaining needle afterbody.
4. blood back demonstration malleation as claimed in claim 1 is closed remaining needle, it is characterized in that, blood back demonstration and malleation are closed two functions and be integrated in a structure and share a described elastica.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110038953 CN102091378B (en) | 2011-02-16 | 2011-02-16 | Retaining needle capable of being closed by virtue of positive pressure and displaying blood back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110038953 CN102091378B (en) | 2011-02-16 | 2011-02-16 | Retaining needle capable of being closed by virtue of positive pressure and displaying blood back |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102091378A CN102091378A (en) | 2011-06-15 |
| CN102091378B true CN102091378B (en) | 2013-05-22 |
Family
ID=44124755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110038953 Expired - Fee Related CN102091378B (en) | 2011-02-16 | 2011-02-16 | Retaining needle capable of being closed by virtue of positive pressure and displaying blood back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102091378B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5501671A (en) * | 1993-11-02 | 1996-03-26 | Novoste Corporation | Vascular blood containment device |
| CN100348280C (en) * | 2004-02-19 | 2007-11-14 | 陈志清 | Membrane type sensitive back blood heating-magnetization filter |
| CN100441246C (en) * | 2006-07-12 | 2008-12-10 | 贾宇东 | Tunnel film type sensitive blood-back vena needle |
| EP2077134B1 (en) * | 2008-01-03 | 2010-12-01 | Eastern Medikit Ltd. | Safety I.V. catheter with in-built device to prevent blood back flow |
-
2011
- 2011-02-16 CN CN 201110038953 patent/CN102091378B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102091378A (en) | 2011-06-15 |
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Owner name: BEIJING FORERUNNER TECHNICAL DEVELOPING CO., LTD. Free format text: FORMER OWNER: JIA YUDONG Effective date: 20130321 Free format text: FORMER OWNER: QIN JINGSHENG Effective date: 20130321 |
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Effective date of registration: 20130321 Address after: 100022 Beijing city Chaoyang District East Third Ring Road No. 39, Jianwai SOHO12 building room 1901 Applicant after: Beijing Forerunner Technical Developing Co., Ltd. Address before: 100077 4-22-1805, Fengtai District, Beijing Applicant before: Jia Yudong Applicant before: Qin Jingsheng |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20160216 |