CN105125224A - Visual return blood anti-reflux two-way blood taking needle - Google Patents
Visual return blood anti-reflux two-way blood taking needle Download PDFInfo
- Publication number
- CN105125224A CN105125224A CN201510665684.1A CN201510665684A CN105125224A CN 105125224 A CN105125224 A CN 105125224A CN 201510665684 A CN201510665684 A CN 201510665684A CN 105125224 A CN105125224 A CN 105125224A
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- needle
- blood
- vein
- blood taking
- puncture
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- 239000008280 blood Substances 0.000 title claims abstract description 90
- 210000004369 blood Anatomy 0.000 title claims abstract description 90
- 230000000007 visual effect Effects 0.000 title claims abstract description 12
- 230000000151 anti-reflux effect Effects 0.000 title abstract 2
- 210000003462 vein Anatomy 0.000 claims abstract description 58
- 238000001990 intravenous administration Methods 0.000 claims description 19
- 238000010241 blood sampling Methods 0.000 claims description 17
- 230000002457 bidirectional effect Effects 0.000 claims description 15
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 11
- 239000002775 capsule Substances 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 208000015181 infectious disease Diseases 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 3
- 241000283216 Phocidae Species 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008320 venous blood flow Effects 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a visual return blood anti-reflux two-way blood taking needle comprising a vein needle tube, a vein needle seat, a puncture needle seat and a puncture needle tube, wherein the vein needle seat and the puncture needle seat are fixed together to form a blood taking cavity. The blood taking needle is characterized in that a large supporting column is arranged on the puncture needle seat in the blood taking cavity, a round gasket in the blood taking cavity is combined with the vein needle seat to form a closed inner cavity, and a blood taking needle tube and the vein needle tube are separated by the round gasket and are not connected and communicated with each other directly. A little venous blood of venipuncture enters the transparent or semi-transparent closed inner cavity by virtue of venous pressure, so that return blood can be observed clearly to determine whether puncture is successful or not. The blood taking needle disclosed by the invention also has the advantages of preventing the risk that external blood of a human body during blood taking or at the end of blood taking flows back into human veins, reducing the probability of blood infection, and the like, and can be used for effectively solving the problem that when a conventional two-way blood taking needle is used for taking blood, the puncturing angle or/and depth of a vein needle needs/need to be adjusted again during blood taking due to unsuccessful venipuncture.
Description
Technical field
The present invention relates to the aseptic medical equipment for clinical acquisitions blood purposes, especially relate to a kind of can clear view to blood back function and the bidirectional blood taking needle preventing blood back flow.
Background technology
The blood taking needle of clinical acquisitions blood is divided into disposable lancet and common bidirectional blood taking needle two kinds.
The vacuum test tube of disposable lancet and single use human vein blood sample supports the use.Puncture needle on blood taking needle penetrates in the self sealss plug of vacuum test tube by medical personnel, and vacuum test tube is communicated with blood taking needle.After intravenous needle thrusts human vein, human vein blood is under the inner preformed suction function of vacuum test tube, by (namely the process of blood sample suction is the process of vacuum release, and specification and the vacuum of suction amount and container have corresponding relation) in puncture needle suction vacuum test tube.Self sealss rubber sleeve can realize multitube collection and not leak.
Current blood taking needle divides and softly connects formula and firmly connect formula two kinds.1, the soft formula blood taking needle that connects is made up of butyl Capsule, puncture needle tubing, transparent hose, Paracentesis needle holder, vein needle tubing, protective sleeve; owing to there being one section of transparent connecting hose; thus be convenient to observe blood back; but because the cavity volume of connecting hose is larger; the vacuum of a part of vacuum test tube can be consumed, thus reduce the collection capacity of vacuum test tube.2, firmly connect formula blood taking needle: the needle stand of intravenous needle is directly connected with the needle stand of puncture needle, because Paracentesis needle holder is that opaque plastics are made, so do not observe blood back, but the cavity volume of Hard link blood taking needle is very little, can ignore the impact of blood sampling volume.In actual blood collection procedure, no matter adopt and firmly connect formula or the soft blood taking needle connecing formula, when also not extracting blood-collecting needle tube after having gathered blood, blood all likely from puncture needle backflow, pollutes blood of human body, damages human body.
Puncture needle sheath, when using common bidirectional blood taking needle to take a blood sample, is first turned on, then the Paracentesis needle holder and needle holder that have screw thread one end is screwed by medical personnel.The position that selected patient need puncture, tourniquet on bundle, carries out routine disinfection to this site of puncture.Take off intravenous needle sheath, medical personnel are again with the experience of oneself, the needle point of exposed intravenous needle is removed by certain angle and the degree of depth vein that punctures, think and puncture successfully, the inner chamber of vacuum test tube along needle holder of negative pressure will be had again, push the bottom of needle holder to, make cover have the needle tubing end of butyl Capsule to pass completely through the plug of vacuum test tube.Now, if venipuncture success before, then visible blood enters in vacuum test tube immediately; If venipuncture is before unsuccessful, then enter in vacuum test tube without blood, now need the puncture angle readjusting intravenous needle immediately or/and the degree of depth, to see that blood is drawn into vacuum test tube and is as the criterion.When also not extracting blood-collecting needle tube after having gathered blood, blood all likely from puncture needle backflow, pollutes blood of human body, damages human body.
So, medical personnel are when using common bidirectional blood taking needle to carry out venipuncture first, must first guarantee to puncture successfully, otherwise, the follow-up adjustment of puncture can be caused, add the work of medical personnel, too increase pain and the fear of patient, bring mental burden to medical personnel, patient or family numbers of patients., must prevent after having gathered blood, blood likely refluxes and enters human body and pollute blood of human body meanwhile.
Summary of the invention
The object of the present invention is to provide a kind of when venipuncture can clear view to blood back, prevent blood backflow from polluting human body, blood sampling success rate visual blood back counterflow-preventing bidirectional blood taking needle high, easy and simple to handle.
The object of the present invention is achieved like this:
A kind of visual blood back counterflow-preventing bidirectional blood taking needle, comprise intravenous needle sheath, vein needle tubing, vein needle stand, puncture needle sheath, Paracentesis needle holder, puncture needle tubing and butyl Capsule, vein needle tubing is by towards the outer end bonding one-tenth intravenous needle of resin glue with vein needle stand, " Qian " shape of vein needle stand pass through interference fit towards the inner towards inner with Paracentesis needle holder, bonding, screw or the mode fixing compact such as welding together, form blood sampling cavity, puncture needle tubing is by the bonding one-tenth puncture needle towards outer end of the threaded Paracentesis needle holder of resin glue and outer wall, vein needle stand and Paracentesis needle holder are made by transparent or semitransparent material, feature is: at the middle part of Paracentesis needle holder towards the inner, the inner homogeneous of blood sampling cavity is distributed with 1 ~ 12 large support column, the height of all large support columns is identical, on the inwall annular boss of the edge Horizontal Tile of the circular gasket vein needle stand in blood sampling cavity, circular gasket and vein needle stand combine sealed internal chamber towards outer end inner wall, the top distance of the large support column of circular gasket and Paracentesis needle holder is at 0 ~ 2mm, and the inner bottom bore end distance of circular gasket and vein needle stand is at 0 ~ 12mm.
Paracentesis needle holder towards the inner large support column periphery, blood sampling cavity inner homogeneous be distributed with 1 ~ 12 little support column, the height of all little support columns is identical.
The height of large support column exceeds 0 ~ 5mm than the height of little support column.
The volume of the sealed internal chamber between circular gasket and vein needle stand is 5 ~ 30 times of the cavity volume of vein needle tubing.
Butyl Capsule and circular gasket all adopt the good rubber of rebound performance or silica gel to make.
Puncture needle sheath in use, is first turned on by the present invention, then the Paracentesis needle holder and needle holder that have screw thread one end is screwed.The position that selected patient need puncture, tourniquet on bundle, carries out routine disinfection to this site of puncture.Take off intravenous needle sheath, intravenous needle is removed by certain angle and the degree of depth vein that punctures.During puncture, because the sealed internal chamber between intravenous needle and circular gasket has enough spaces, compress the air in this sealed internal chamber for venous pressure, thus make venous blood flow in sealed internal chamber, until when the compressed-air actuated pressure of sealed internal chamber is suitable with venous pressure, venous blood stops flowing into.Now, medical personnel, by transparent or semitransparent vein needle stand, clearly can observe blood back, thus determine to puncture successfully.Puncture successfully, then will the inner chamber of vacuum test tube along needle holder of negative pressure be had, push the bottom of needle holder to, make cover have the blood-collecting needle tube of butyl Capsule to pass completely through the plug of vacuum test tube.
Now, for separating the circular gasket in puncture needle and intravenous needle space, blood-collecting needle tube is made directly not to be connected intercommunication with vein needle tubing.In blood collection procedure, because circular gasket is subject to the negative pressure of vacuum test tube and the impact of human body blood blood flow and pressure effect, the trend of the oriented Paracentesis needle holder side movement of circular gasket, but the large support column that the mid portion due to circular gasket is punctured in the middle of needle stand supports, withstands and can not move, therefore the periphery flexural deformation of circular gasket ride on little support column, blood is made to flow out from periphery and do not blocked, thus make the venous blood of human body be inhaled in vacuum test tube by periphery, realize blood sampling function.Along with the vacuum in vacuum test tube progressively decays, circular gasket is also by progressively resilience.When the pressure in vacuum test tube finally reach press suitable with human vein time, circular gasket also will all be launched and finally again close, separate the space of puncture needle and intravenous needle, prevent human external blood backflow in human vein.
Therefore, the present invention to have when venipuncture can clear view to blood back, prevent blood collection procedure or at the end of human external blood backflow to the risk in human vein, reduce blood infection probability, blood sampling success rate advantage high, easy and simple to handle, it effectively can solve traditional bidirectional blood taking needle when taking a blood sample, and causes the puncture angle that again need adjust intravenous needle during blood sampling or/and the problem of the degree of depth because venipuncture is unsuccessful.
Accompanying drawing explanation
Fig. 1 is cross-sectional schematic of the present invention;
Fig. 2 is the cross-sectional schematic removing protective sleeve in Fig. 1;
Fig. 3 is the cross-sectional schematic of vein needle stand;
Fig. 4 is the structural representation of circular gasket;
Fig. 5 is the cross-sectional schematic of Paracentesis needle holder;
Fig. 6 is the schematic top plan view of Paracentesis needle holder.
Detailed description of the invention
Contrast accompanying drawing below in conjunction with embodiment the present invention is described in further detail.
A kind of visual blood back counterflow-preventing bidirectional blood taking needle, comprise intravenous needle sheath 1, vein needle tubing 2, vein needle stand 3, puncture needle sheath 6, Paracentesis needle holder 5, puncture needle tubing 7 and butyl Capsule 8, vein needle tubing 2 is by towards the outer end bonding one-tenth intravenous needle of resin glue with vein needle stand 3, " Qian " shape of vein needle stand 3 towards inner with Paracentesis needle holder 6 towards together with inner adhering and sealing, form blood sampling cavity 32, puncture needle tubing 7 is by the bonding one-tenth puncture needle towards outer end of the threaded Paracentesis needle holder of resin glue and outer wall 5, vein needle stand 3 and Paracentesis needle holder 6 are made by transparent or semitransparent material, at the middle part of Paracentesis needle holder 6 towards the inner, the inner homogeneous of blood sampling cavity 32 is distributed with 4 large support columns 52, the height of all large support columns 52 is identical, on the inwall annular boss 35 of the vein needle stand 3 of edge Horizontal Tile in blood sampling cavity 32 of circular gasket 4, circular gasket 4 combines sealed internal chamber 34 with vein needle stand 3 towards outer end inner wall, circular gasket 4 is 2mm with the top distance of the large support column 52 of Paracentesis needle holder 6, and the end 33 of the interior bottom outlet 31 of circular gasket 4 and vein needle stand 3 is apart from being 5mm.
Puncture needle tubing 7 is fixed on Paracentesis needle holder 5, and the bottom flush end 71 of puncture needle tubing 7 pierces into but do not exceed the through hole 51 of Paracentesis needle holder 5.Butyl Capsule 8 tightly overlaps and wraps the whole outer surface of the cutting tip 72 of puncture needle tubing 7.Vein needle tubing 2 is fixed on vein needle stand 3, and the bottom flush end 21 of vein needle tubing 2 pierces into but do not exceed the interior bottom outlet 31 of vein needle stand 3.
Paracentesis needle holder 6 towards the inner large support column 52 periphery, blood sampling cavity 32 inner homogeneous be distributed with 8 little support columns 53, the height of all little support columns 53 is identical.
The height of large support column 52 exceeds 3mm than the height of little support column 53.
The volume of the sealed internal chamber 34 between circular gasket 4 and vein needle stand 3 is 20 times of inner chamber 22 volume of vein needle tubing 2.
Butyl Capsule 8 and circular gasket 4 all adopt the good rubber of rebound performance or silica gel to make.
Intravenous needle sheath 1 and vein needle stand 3 are locked by interference fit, to protect the cutting tip 23 of exposed vein needle tubing 2; Blood taking needle sheath 6 and intravenous needle sheath 1 are locked by interference fit, have the cutting tip 72 of the blood-collecting needle tube 7 of butyl Capsule 8 with protective sleeve.
Claims (6)
1. a visual blood back counterflow-preventing bidirectional blood taking needle, comprise intravenous needle sheath, vein needle tubing, vein needle stand, puncture needle sheath, Paracentesis needle holder, puncture needle tubing and butyl Capsule, vein needle tubing is by towards the outer end bonding one-tenth intravenous needle of resin glue with vein needle stand, " Qian " shape of vein needle stand pass through interference fit towards the inner towards inner with Paracentesis needle holder, bonding, screw or the mode fixing compact such as welding together, form blood sampling cavity, puncture needle tubing is by the bonding one-tenth puncture needle towards outer end of the threaded Paracentesis needle holder of resin glue and outer wall, vein needle stand and Paracentesis needle holder are made by transparent or semitransparent material, it is characterized in that: at the middle part of Paracentesis needle holder towards the inner, the inner homogeneous of blood sampling cavity is distributed with 1 ~ 12 large support column, the height of all large support columns is identical, on the inwall annular boss of the edge Horizontal Tile of the circular gasket vein needle stand in blood sampling cavity, circular gasket and vein needle stand combine sealed internal chamber towards outer end inner wall.
2. visual blood back counterflow-preventing bidirectional blood taking needle according to claim 1, is characterized in that: the top distance of the large support column of circular gasket and Paracentesis needle holder is at 0 ~ 2mm, and the inner bottom bore end distance of circular gasket and vein needle stand is at 0 ~ 12mm.
3. visual blood back counterflow-preventing bidirectional blood taking needle according to claim 1, is characterized in that: Paracentesis needle holder towards the inner large support column periphery, blood sampling cavity inner homogeneous be distributed with 1 ~ 12 little support column, the height of all little support columns is identical.
4. visual blood back counterflow-preventing bidirectional blood taking needle according to claim 2, is characterized in that: the height of large support column exceeds 0 ~ 5mm than the height of little support column.
5. visual blood back counterflow-preventing bidirectional blood taking needle according to claim 1, is characterized in that: the volume of the sealed internal chamber between circular gasket and vein needle stand is 5 ~ 30 times of the cavity volume of vein needle tubing.
6. visual blood back counterflow-preventing bidirectional blood taking needle according to claim 1, is characterized in that: butyl Capsule and circular gasket all adopt the good rubber of rebound performance or silica gel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665684.1A CN105125224B (en) | 2015-10-16 | 2015-10-16 | Visual blood return backflow prevention bidirectional blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510665684.1A CN105125224B (en) | 2015-10-16 | 2015-10-16 | Visual blood return backflow prevention bidirectional blood taking needle |
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| Publication Number | Publication Date |
|---|---|
| CN105125224A true CN105125224A (en) | 2015-12-09 |
| CN105125224B CN105125224B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510665684.1A Active CN105125224B (en) | 2015-10-16 | 2015-10-16 | Visual blood return backflow prevention bidirectional blood taking needle |
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| Country | Link |
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| CN (1) | CN105125224B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107582075A (en) * | 2017-10-28 | 2018-01-16 | 刘贞宽 | Disposable pen type anti-reverse flow pattern vein blood taking needle safely |
| CN108324291A (en) * | 2018-03-24 | 2018-07-27 | 曹春荣 | Blood specimen collection valve for preventing reverse-flow device and blood taking needle |
| CN114073793A (en) * | 2020-09-21 | 2022-02-22 | 至善介入消融技术研究院(南京)有限公司 | Outer needle base and puncture needle using same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202446099U (en) * | 2012-02-21 | 2012-09-26 | 王振民 | Multifunctional visible blood return vacuum vein blood collecting needle |
| CN202604844U (en) * | 2012-04-23 | 2012-12-19 | 江西洪达医疗器械集团有限公司 | Visual blood-return two-way blood-taking needle |
| CN202665548U (en) * | 2012-07-24 | 2013-01-16 | 张中明 | Safe blood taking needle with visible blood return |
| WO2014169433A1 (en) * | 2013-04-16 | 2014-10-23 | Zhang Jianming | Needle cylinder type vacuum blood sampler with slidable puncturing needle seat |
| CN205107705U (en) * | 2015-10-16 | 2016-03-30 | 江西洪达医疗器械集团有限公司 | Visual time prevention and cure of schistosomiasis are two -way blood taking needle against current |
-
2015
- 2015-10-16 CN CN201510665684.1A patent/CN105125224B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202446099U (en) * | 2012-02-21 | 2012-09-26 | 王振民 | Multifunctional visible blood return vacuum vein blood collecting needle |
| CN202604844U (en) * | 2012-04-23 | 2012-12-19 | 江西洪达医疗器械集团有限公司 | Visual blood-return two-way blood-taking needle |
| CN202665548U (en) * | 2012-07-24 | 2013-01-16 | 张中明 | Safe blood taking needle with visible blood return |
| WO2014169433A1 (en) * | 2013-04-16 | 2014-10-23 | Zhang Jianming | Needle cylinder type vacuum blood sampler with slidable puncturing needle seat |
| CN205107705U (en) * | 2015-10-16 | 2016-03-30 | 江西洪达医疗器械集团有限公司 | Visual time prevention and cure of schistosomiasis are two -way blood taking needle against current |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107582075A (en) * | 2017-10-28 | 2018-01-16 | 刘贞宽 | Disposable pen type anti-reverse flow pattern vein blood taking needle safely |
| CN108324291A (en) * | 2018-03-24 | 2018-07-27 | 曹春荣 | Blood specimen collection valve for preventing reverse-flow device and blood taking needle |
| CN108324291B (en) * | 2018-03-24 | 2023-12-22 | 曹春荣 | Blood sample collection anti-backflow valve device and blood taking needle |
| CN114073793A (en) * | 2020-09-21 | 2022-02-22 | 至善介入消融技术研究院(南京)有限公司 | Outer needle base and puncture needle using same |
| CN114073793B (en) * | 2020-09-21 | 2024-05-07 | 至善介入消融技术研究院(南京)有限公司 | Outer needle base and puncture needle using same |
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| Publication number | Publication date |
|---|---|
| CN105125224B (en) | 2024-03-26 |
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