CN201775632U - Visible-return-blood blood lancet - Google Patents
Visible-return-blood blood lancet Download PDFInfo
- Publication number
- CN201775632U CN201775632U CN201020516176XU CN201020516176U CN201775632U CN 201775632 U CN201775632 U CN 201775632U CN 201020516176X U CN201020516176X U CN 201020516176XU CN 201020516176 U CN201020516176 U CN 201020516176U CN 201775632 U CN201775632 U CN 201775632U
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- blood
- needle
- cannula
- cannula needle
- connection block
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- Expired - Lifetime
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Abstract
The utility model relates to a visible-return-blood blood lancet, which comprises a venipuncture needle, a cannula needle and a blood lancet holder. A blood stop sleeve is arranged outside the cannula needle, the blood lancet holder comprises a puncture needle seat, a cannula needle fixing seat and a cannula needle connecting seat, the venipuncture needle is mounted and fixed at the front end of the puncture needle seat, a hollow return blood cavity is arranged at the rear end of the puncture needle seat, the rear end of the puncture needle and the rear end of the cannula needle are butted in sealed manner, the cannula needle fixing seat is inserted into a cylinder at the front end of the cannula needle connecting seat to be connected and fixed with the cannula needle connecting seat, and a drainage and exhaust sleeve communicated with the return blood cavity is mounted on the outer side of the cannula sleeve fixing seat. The visible return blood cavity is miniature in volume, air in the return blood cavity can be exhausted by the drainage and exhaust sleeve in time, air pressure in the return blood cavity is reduced, residual blood volume in the return blood cavity is small and only 0.03ml, and the blood lancet is reasonable in structure, simple in blood taking operation, high in efficiency, fast, clear and reliable in blood return, and brings convenience for observation.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, specifically a kind of visible blood-back blood taking needle.
Background technology
We know, blood collection, utilization are important curative activities, blood taking needle, the blood taking tube important apparatus that is absolutely necessary.Past generally uses is traditional syringe blood drawing, transfers to blood taking tube again and operation such as inspects by ready samples; In recent years, the vacuum tube single step is directly taken a blood sample becomes advanced blood sampling means.The vacuum tube single step is directly taken a blood sample and is adopted double end blood taking needle, vacuum test tube, blood collecting protecting sleeve hemostixes such as (needle holders).Existing double end blood taking needle is common blood taking needle, mainly comprises blood taking needle Connection Block and venipuncture needle and cannula needle.Venipuncture needle is positioned at the front end of Connection Block, is used for venipuncture; Cannula needle is positioned at the other end of Connection Block, is used for being connected cooperation with vacuum test tube and takes a blood sample.Its venipuncture needle and cannula needle integrative-structure, the blood taking needle Connection Block is generally opaque, is invisible blood back structure, and like this, the probability of failing that causes taking a blood sample increases, and causes the waste of vacuum test tube.At present, the visible blood-flow pin is arranged also, disclose a kind of blood taking needle of visible blood-flow as Chinese patent 200520118666.3, it comprises puncture needle, needle stand, needle for inserting bottle, blood resistance unit, sleeve and vacuum test tube; Puncture needle and needle for inserting bottle are monomer structure, are communicated with the two ends of needle stand respectively; Needle stand is made of transparent material, is hollow-core construction in the middle of it.After seeing blood back during puncture blood collecting etc. needle for inserting bottle is being inserted in the vacuum test tube, reducing the spoilage of blood taking needle, making things convenient for medical personnel again and, improved puncture success rate by blood sampling person.But because the existence of gas in the puncture needle tubing, its visible blood-flow reflection time is slow, and in order to reduce the pressure in the blood back cavity, the blood back cavity that needs is relatively big, and remaining blood volume reaches 0.3ml, easily causes the error of taking a blood sample.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of structure reasonable, and it is simple to operate to take a blood sample, the efficient height, and blood back is quick, clear, reliable, is convenient to observe the small visible blood-back blood taking needle of the remaining blood volume of blood back cavity.
The technical scheme in the invention for solving the above technical problem is: a kind of visible blood-back blood taking needle, it comprises venipuncture needle, cannula needle and blood sampling needle stand, the cannula needle outside is provided with blood resistance unit, it is characterized in that: the blood sampling needle stand comprises Paracentesis needle holder, the cannula needle holder, the cannula needle Connection Block, venipuncture needle is fixed on the Paracentesis needle holder front end, the Paracentesis needle holder rear end is provided with the blood back cavity of a hollow, Paracentesis needle holder rear end and cannula needle Connection Block rear end Butt sealing, the cannula needle holder inserts in the cannula needle Connection Block front end cylinder, be connected and fixed with the cannula needle Connection Block, in cannula needle Connection Block cylinder, a hydrophobic spool piece that communicates with blood back cavity is installed in the cannula needle holder outside.
The said cannula needle holder of this utility model rear end is provided with an annular groove, and correspondingly cannula needle Connection Block cylinder inboard is provided with an annular protrusion, and the cannula needle holder is connected with cannula needle Connection Block draw-in groove.
The said cannula needle holder of this utility model front end is provided with the blood resistance unit fixing lug boss of a band conical surface.The socket of blood resistance unit rear portion is fixed on this boss.
The said cannula needle holder of this utility model middle part is provided with an annular boss, and cannula needle Connection Block cylinder inboard is provided with a boss, and hydrophobic spool piece two ends fixedly are fixed between this annular boss and this boss.
This utility model blood sampling needle stand comprises Paracentesis needle holder, cannula needle holder, cannula needle Connection Block, two ends are venipuncture needle and cannula needle fixedly, the Paracentesis needle holder rear end is provided with blood back cavity, be provided with the hydrophobic spool piece that communicates with blood back cavity between cannula needle holder and the cannula needle Connection Block, hydrophobic spool piece adopts micro-porous permeable PP material, and the hydrophobic spool piece of this material allows the air scavenge in the pipeline, and with after liquid contacts, the material Expansion sealing prevents that blood from flowing out.Like this, after blood sampling is punctured successfully, the gas in venipuncture needle needle tubing and the blood back cavity, can in time discharge from hydrophobic spool piece, reduce gas pressure in the blood back cavity, blood can be fast, clearly overflow in blood back cavity, is convenient to fast, clearly observe the blood back phenomenon.The timely discharge of the gas in needle tubing and the blood back cavity can make the blood back cavity volume significantly reduce, the remaining oligemia of taking a blood sample.Against existing technologies, this utility model structure is reasonable, and it is simple to operate to take a blood sample, the efficient height, blood back is quick, clear, reliable, is convenient to observe, and the remaining blood volume of blood back cavity is small, improve the success rate of puncture, reduced the waste of product, alleviated patient's misery and medical personnel's stress.
Description of drawings
The utility model will be further described below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a blood sampling needle stand enlarged diagram of the present utility model.
1. blood resistance units among the figure, 2. cannula needle, 3. cannula needle holder, 31. blood resistance unit fixing lug boss, 32. annular boss, 33. annular groove, 4. hydrophobic spool piece, 5. cannula needle Connection Block, 51. annular protrusions, 52. boss, 6. Paracentesis needle holder, 61. blood back cavities, 7. venipuncture needle.
The specific embodiment
From Fig. 1, Fig. 2 as can be seen, a kind of visible blood-back blood taking needle of this utility model, it comprises venipuncture needle 7, cannula needle 2, blood resistance unit 1 and blood sampling needle stand etc.Cannula needle 2 outsides are provided with blood resistance unit 1, and blood resistance unit 1 is by elastomeric material processing, and after cannula needle 2 inserted vacuum test tube, it played sealing resistance blood.
Characteristics of the present utility model are: the blood sampling needle stand comprises Paracentesis needle holder 6, cannula needle holder 3, cannula needle Connection Block 5.Paracentesis needle holder 6, the transparent engineering plastics of cannula needle Connection Block 5 usefulness are made.Venipuncture needle 7 is fixed on Paracentesis needle holder 5 front ends, and venipuncture needle 7 closely cooperates with interior 5 pores of Paracentesis needle holder, and is with epoxy resin that needle tubing and needle stand is bonding firmly.Also can be with the needle tubing sheath outside the venipuncture needle 7.
The said Paracentesis needle holder of this utility model 6 rear ends are provided with the blood back cavity 61 of a hollow, Paracentesis needle holder 6 rear ends and cannula needle Connection Block 5 rear end Butt sealings, cannula needle holder 3 inserts in the cannula needle Connection Block 5 front end cylinders, be connected and fixed with cannula needle Connection Block 5, in cannula needle Connection Block 5 cylinders, a hydrophobic spool piece 4 that communicates with blood back cavity 61 is installed between cannula needle holder 3 and the cannula needle Connection Block 5.Hydrophobic spool piece 4 sealing shrouds are contained in cannula needle holder 3 outsides, the connection that contacts with blood back cavity 61 of its front end face.Hydrophobic spool piece 4 adopts micro-porous permeable PP material, and the hydrophobic spool piece of this material allows the air scavenge in the pipeline, and when with after liquid contacts, the material Expansion sealing prevents the blood outflow.During use, after blood sampling is punctured successfully, gas in gas in venipuncture needle 7 needle tubings and the blood back cavity 61 can in time be discharged from hydrophobic spool piece 4, reduce gas pressure in the blood back cavity 61, blood can be fast, clearly overflow in blood back cavity 61, the visible blood-flow reflection time is fast, is convenient to fast, clearly observe the blood back phenomenon.Like this, because the timely discharge of the gas in venipuncture needle 7 needle tubings and the blood back cavity 61 can make blood back cavity 61 volumes significantly reduce, thereby the remaining blood volume of blood sampling significantly reduces in the blood back cavity 61.This utility model remaining blood volume of taking a blood sample has only 0.03ml.
The said cannula needle holder of this utility model 3 rear ends are provided with an annular groove 33, correspondingly cannula needle Connection Block 5 cylinder inboards are provided with an annular protrusion 51, cannula needle holder 3 cooperatively interacts by described annular groove 33 and annular protrusion 51 with cannula needle Connection Block 5, and draw-in groove connects.
Said cannula needle holder 3 front ends of this utility model are provided with the blood resistance unit fixing lug boss 31 of a band conical surface, and blood resistance unit 1 rear sleeve fastens on this boss.
The said cannula needle holder of this utility model 3 middle parts are provided with an annular boss 32, cannula needle Connection Block 5 cylinder inboards are provided with a boss 52, hydrophobic spool piece 4 two ends fixedly are fixed 52 of this annular boss 32 and this boss, and sealing and fixing is between cannula needle holder 3 and cannula needle Connection Block 5.
This utility model is owing to be provided with the hydrophobic spool piece 4 that communicates with blood back cavity between cannula needle holder and cannula needle Connection Block, the blood back cavity volume is small.During blood sampling, can be in time with the air scavenge in the blood back cavity, reduce gas pressure in the blood back cavity, blood can be fast, clearly overflow in blood back cavity, and the visible blood-flow reflection time is fast, is convenient to fast, clearly observe the blood back phenomenon.The remaining blood volume of blood back cavity is small, and remaining blood volume has only 0.03ml.
Claims (4)
1. visible blood-back blood taking needle, it comprises venipuncture needle, cannula needle and blood sampling needle stand, the cannula needle outside is provided with blood resistance unit, it is characterized in that: the blood sampling needle stand comprises Paracentesis needle holder, the cannula needle holder, the cannula needle Connection Block, venipuncture needle is fixed on the Paracentesis needle holder front end, the Paracentesis needle holder rear end is provided with the blood back cavity of a hollow, Paracentesis needle holder rear end and cannula needle Connection Block rear end Butt sealing, the cannula needle holder inserts in the cannula needle Connection Block front end cylinder, be connected and fixed with the cannula needle Connection Block, in cannula needle Connection Block cylinder, a hydrophobic spool piece that communicates with blood back cavity is installed in the cannula needle holder outside.
2. visible blood-back blood taking needle according to claim 1, it is characterized in that: said cannula needle holder rear end is provided with an annular groove, correspondingly cannula needle Connection Block cylinder inboard is provided with an annular protrusion, and the cannula needle holder is connected with cannula needle Connection Block draw-in groove.
3. visible blood-back blood taking needle according to claim 1 is characterized in that: said cannula needle holder front end is provided with the blood resistance unit fixing lug boss of a band conical surface.
4. visible blood-back blood taking needle according to claim 1, it is characterized in that: said cannula needle holder middle part is provided with an annular boss, cannula needle Connection Block cylinder inboard is provided with a boss, and hydrophobic spool piece two ends fixedly are fixed between this annular boss and this boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020516176XU CN201775632U (en) | 2010-09-03 | 2010-09-03 | Visible-return-blood blood lancet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020516176XU CN201775632U (en) | 2010-09-03 | 2010-09-03 | Visible-return-blood blood lancet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201775632U true CN201775632U (en) | 2011-03-30 |
Family
ID=43788869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020516176XU Expired - Lifetime CN201775632U (en) | 2010-09-03 | 2010-09-03 | Visible-return-blood blood lancet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201775632U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926649A (en) * | 2010-09-03 | 2010-12-29 | 威海鸿宇医疗器械有限公司 | Visible blood-back blood taking needle |
| CN102631202A (en) * | 2012-05-11 | 2012-08-15 | 威海鸿宇医疗器械有限公司 | Blood taking needle with visible blood returning |
| CN102648849A (en) * | 2012-04-28 | 2012-08-29 | 上海金塔医用器材有限公司 | Disposable retractive safe blood taking needle |
| CN102697512A (en) * | 2012-06-04 | 2012-10-03 | 上海金塔医用器材有限公司 | Disposable safely-retracting blood taking needle |
| CN103251416A (en) * | 2013-06-03 | 2013-08-21 | 威海鸿宇医疗器械有限公司 | Safe blood taking needle |
| CN107684434A (en) * | 2017-09-27 | 2018-02-13 | 山东威高集团医用高分子制品股份有限公司 | Venous blood collect needle |
| CN112675408A (en) * | 2019-10-18 | 2021-04-20 | 贝克顿·迪金森公司 | Catheter system |
-
2010
- 2010-09-03 CN CN201020516176XU patent/CN201775632U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101926649A (en) * | 2010-09-03 | 2010-12-29 | 威海鸿宇医疗器械有限公司 | Visible blood-back blood taking needle |
| CN102648849A (en) * | 2012-04-28 | 2012-08-29 | 上海金塔医用器材有限公司 | Disposable retractive safe blood taking needle |
| CN102631202A (en) * | 2012-05-11 | 2012-08-15 | 威海鸿宇医疗器械有限公司 | Blood taking needle with visible blood returning |
| CN102697512A (en) * | 2012-06-04 | 2012-10-03 | 上海金塔医用器材有限公司 | Disposable safely-retracting blood taking needle |
| CN103251416A (en) * | 2013-06-03 | 2013-08-21 | 威海鸿宇医疗器械有限公司 | Safe blood taking needle |
| CN107684434A (en) * | 2017-09-27 | 2018-02-13 | 山东威高集团医用高分子制品股份有限公司 | Venous blood collect needle |
| CN112675408A (en) * | 2019-10-18 | 2021-04-20 | 贝克顿·迪金森公司 | Catheter system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Visible blood-back blood taking needle Effective date of registration: 20150204 Granted publication date: 20110330 Pledgee: Weihai JETCO Company limited by guarantee financing Pledgor: Weihai Hongyu Medical Devices Co., Ltd. Registration number: 2015990000099 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110330 |