CN102091378A - 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
- CN102091378A CN102091378A CN 201110038953 CN201110038953A CN102091378A CN 102091378 A CN102091378 A CN 102091378A CN 201110038953 CN201110038953 CN 201110038953 CN 201110038953 A CN201110038953 A CN 201110038953A CN 102091378 A CN102091378 A CN 102091378A
- Authority
- CN
- China
- Prior art keywords
- malleation
- elastica
- blood back
- remaining needle
- switch
- 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.)
- Granted
Links
- 239000008280 blood Substances 0.000 title claims abstract description 29
- 210000004369 blood Anatomy 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims description 21
- 238000007906 compression Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 3
- 210000003462 vein Anatomy 0.000 abstract description 2
- 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
- 238000005516 engineering process Methods 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Images
Landscapes
- 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 have sensitive blood-return puncture auxiliary judgment function and just compressing switch 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 at the vein condition, venipuncture judges that difficulty is big, failure causes the patient suffering, delay treatment easily.When finishing transfusion, when closing remaining needle, existing common product will add the injection heparin again and prevent problem such as blood back and frozen plug in the pipeline, have the product that adds positive pressure connector to play certain malleation effect reliably or said equalizing sub, 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 perfect functions design more, made the clinical practice remaining needle simple more reliable easily.
Summary of the invention
In order to solve above-mentioned existing in prior technology defective, the invention provides a kind of blood back demonstration malleation and close remaining needle, comprise venous indwelling pipe, 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 installed in and just compresses switch, elastica was in relaxed state during the malleation switch opens, 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, loam cake and compression legs, and elastica covers on the interior groove of malleation Switch main body, and the edge is by loam cake and malleation Switch main body pressing sealing, and there is the compression leg that can pass in and out in the elastica outside; When compression leg compressing elastica enters in the groove on the malleation Switch main body, elastica seals the edge of the groove on the malleation Switch main body and the liquid in the groove is pressed 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 the remaining needle inlet simultaneously; During the malleation switch opens, compression leg shifts out, and is gapped between compression leg and the elastica, and elastica runs into when fluid pressure raises in the pipeline outwards (compression leg direction) and expands and leave groove on the malleation Switch main body, the blood back Presentation Function of realization remaining needle afterbody; Blood back demonstration and malleation are closed two functions and are integrated in the structure and a shared elastica; Elastica covers on the groove on the malleation Switch main body, and the edge sealing is in when closing when just compressing switch, and compression leg compressing elastica can not outwards expand elastica again, does not promptly have the blood back Presentation Function.
Good effect of the present invention is: improved the ability of the blood back auxiliary judgment of venipuncture, at difficult patient better puncture chance of success has been arranged more, 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 the 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 venous indwelling pipe 11, sealing-plug 8, soft connecting leg 7, elastica 2 and just compressing switch, the downstream of soft connecting leg 7 flow directions connects remaining needle needle stand 9, the upstream extremity connection of soft connecting leg 7 flow directions just compresses switch, in elastica 2 was installed in and just compresses switch, elastica 2 was in relaxed state during the malleation switch opens, and elastica 2 oppressed shutoff pipelines when closing are just compressing switch; Just compressing switch is made of parts such as malleation Switch main body 1, elastica 2, loam cake 3 and compression legs 5, and elastica 2 covers on the groove in the malleation Switch main body 1, and the edge is by loam cake 3 and malleation Switch main body 1 pressing sealing, 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 the groove on the malleation Switch main body 1, the edge of the groove on the elastica 2 sealing malleation Switch main bodies 1 also presses in the soft connecting leg of remaining needle 7 with the liquid in the groove, make liquid be extruded venous indwelling pipe 11 and realize the purpose that malleation is extruded, close the remaining needle inlet simultaneously; During the malleation switch opens, compression leg 5 shifts out, gapped between compression leg 5 and the elastica 2, elastica 2 runs into when fluid pressure raises in the pipeline outwards (compression leg 5 directions) and expands and leave groove on the malleation Switch main body 1, the blood back Presentation Function of realization remaining needle afterbody; Blood back demonstration and malleation are closed two functions and are integrated in the structure and a shared elastica 2; Elastica 2 covers on the groove on the malleation Switch main body, and the edge sealing is in when closing when just compressing switch, and compression leg 5 compressing elasticas 2 can not outwards expand elastica 2 again, promptly do not have the blood back Presentation Function.
The present invention has improved the ability of the blood back auxiliary judgment of venipuncture really, at difficult patient better puncture chance of success is arranged more, can realize more positively also that when keeping somewhere malleation extrudes the purpose of liquid, prevent blood reflux stream and blood coagulation that causes and the problem of stopping up needle tubing.
Claims (5)
1. a blood back demonstration malleation is closed remaining needle, comprise venous indwelling pipe, 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 is installed in and just compresses switch, elastica is in relaxed state during the malleation switch opens, 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, just compressing switch and constituting by parts such as malleation Switch main body, elastica, loam cake and compression legs, elastica covers on the interior groove of malleation Switch main body, the edge is by loam cake and malleation Switch main body pressing sealing, and there is the compression leg that can pass in and out in the elastica outside.
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 the groove on the malleation Switch main body, elastica seals the edge of the groove on the malleation Switch main body and the liquid in the groove is pressed 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 the remaining needle inlet simultaneously.
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 the elastica, elastica runs into when fluid pressure raises in the pipeline outwards (compression leg direction) and expands and leave groove on the malleation Switch main body, the blood back Presentation Function of realization 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 the structure and a shared elastica.
5. blood back as claimed in claim 1 shows that malleation closes remaining needle, it is characterized in that, elastica covers on the groove on the malleation Switch main body, the edge sealing, be in when closing when just compressing switch, compression leg compressing elastica can not outwards expand elastica again, does not promptly have the blood back Presentation Function.
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 true CN102091378A (en) | 2011-06-15 |
| CN102091378B 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) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980492A (en) * | 1993-11-02 | 1999-11-09 | Merit Medical Systems, Inc. | Vascular blood containment device |
| CN1657108A (en) * | 2004-02-19 | 2005-08-24 | 陈志清 | Membrane type sensitive back blood heating-magnetization filter |
| CN101036811A (en) * | 2006-07-12 | 2007-09-19 | 贾宇东 | Tunnel film type sensitive blood-back vena needle |
| EP2077134A1 (en) * | 2008-01-03 | 2009-07-08 | 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
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5980492A (en) * | 1993-11-02 | 1999-11-09 | Merit Medical Systems, Inc. | Vascular blood containment device |
| CN1657108A (en) * | 2004-02-19 | 2005-08-24 | 陈志清 | Membrane type sensitive back blood heating-magnetization filter |
| CN101036811A (en) * | 2006-07-12 | 2007-09-19 | 贾宇东 | Tunnel film type sensitive blood-back vena needle |
| EP2077134A1 (en) * | 2008-01-03 | 2009-07-08 | Eastern Medikit Ltd. | Safety I.V. catheter with in-built device to prevent blood back flow |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102091378B (en) | 2013-05-22 |
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| ASS | Succession or assignment of patent right |
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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Free format text: CORRECT: ADDRESS; FROM: 100077 FENGTAI, BEIJING TO: 100022 CHAOYANG, BEIJING |
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| TA01 | Transfer of patent application right |
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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Addressee: Beijing Forerunner Technical Developing Co., Ltd. Document name: Notification to Pay the Fees |
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Addressee: Beijing Forerunner Technical Developing Co., Ltd. Document name: Notification of Termination of Patent Right |
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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 |