CN102783954B - Mono-directional inverse-inhibiting safe blood taking needle - Google Patents
Mono-directional inverse-inhibiting safe blood taking needle Download PDFInfo
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- CN102783954B CN102783954B CN201210323237.4A CN201210323237A CN102783954B CN 102783954 B CN102783954 B CN 102783954B CN 201210323237 A CN201210323237 A CN 201210323237A CN 102783954 B CN102783954 B CN 102783954B
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- needle
- end needle
- venipuncture
- needle tubing
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Abstract
The invention belongs to the field of medical appliances and particularly relates to a mono-directional inverse-inhibiting safe blood taking needle. The mono-directional inverse-inhibiting safe blood taking needle is characterized by comprising an abutting end needle tubing, a vein puncture end needle tubing and a connection device arranged between the abutting end needle tubing and the vein puncture end needle tubing, wherein the connection device is provided with a mono-directional inverse-flow-inhibiting structure. The blood taking needle has reasonable structure, is capable of avoiding the blood flowing back to human body veins from the blood taking tube by means of the mono-directional inverse-flow-inhibiting structure, so that the safety of the person who is blooded is ensured; the designed needle handle and a vein puncture end needle protection cover are configured into a safe puncture-preventing device, so that the vein puncture end needle tubing is prevented from error puncture, the medical workers are protected, and the safe blood taking function is realized.
Description
Technical field
The present invention relates to a kind of one-way reverse-blocking safe blood-taking needle, belong to medical instruments field.
Background technology
At present, in venous blood collection, use various blood taking needles.When taking a blood sample, first the venipuncture needle of blood taking needle is inserted in vein, the plug of butt end needle tubing transfixation vacuum test tube, under the pull of vacuum of vacuum test tube, blood enters vacuum test tube by the passage of blood taking needle.Along with the decline of vacuum in vacuum test tube, the pressure that finally reaches pressure in vacuum test tube and blood vessel stops blood sampling about equally time.When the position of blood taking tube is during higher than the position of blood vessel or when human vein is pressed with fluctuation, the pressure in blood taking tube is greater than the pressure of people's vein.And for the blood taking needle of venous blood collection, connects at present, there is no backflow preventing structure, the pressure in blood taking tube can cause the blood in blood taking tube to flow to the possible of vein blood vessel while being greater than the pressure of people's vein.On the other hand, have various reagent in blood taking tube, the reagent that is mixed into blood when producing adverse current enters people's vein blood vessel, may cause harmful effect.Except above-mentioned points, after blood sampling is over, needle tube sheath is not easy to continue to be inserted on venipuncture needle, and outside needle tubing is exposed to mostly, medical personnel etc. are easily subject to needle stick injury, easily causes pollution, infects, and has potential safety hazard in use procedure.
Summary of the invention
According to above deficiency of the prior art, the technical problem to be solved in the present invention is: provide a kind of and can prevent that blood enters human vein blood vessel, guarantees to use safe one-way reverse-blocking safe blood-taking needle from blood taking tube adverse current in venous blood collection process.
One-way reverse-blocking safe blood-taking needle of the present invention, is characterized in that: comprise butt end needle tubing, venipuncture end needle tubing and the connecting device between butt end needle tubing, venipuncture end needle tubing, be provided with one-way reverse-blocking flow structure in connecting device.
Described connecting device comprises interconnective butt end needle stand and check valve pedestal, on the needle stand of butt end, connect butt end needle tubing, on check valve pedestal, connect venipuncture end needle tubing, elastic one-way valve film is set in the cavity between butt end needle stand and check valve pedestal, in the needle stand of butt end, circulation groove is set, check valve seat surface is shiny surface to the face of elastic one-way valve film, and the shiny surface of elastic one-way valve film, circulation groove and check valve pedestal forms one-way reverse-blocking flow structure jointly.Under normal condition, elastic one-way valve film and check valve pedestal being combined together tightly, when running into the blood pressure of vein, elastic one-way valve film generation deformation, the blood collecting flows in vacuum test tube along circulation groove; When running into the buffer brake that derives from vacuum test tube inside, elastic one-way valve film and check valve pedestal being combined together tightly, path blockade, plays resistance reverse action.
Wherein, elastic one-way valve film adopts elastomeric material, and hardness is less than 50, and shape can be selected multiple, and the present invention adopts following preferred version:
Described elastic one-way valve film is disc-shaped.
Described elastic one-way valve film is barrel-shaped, and the bottom surface of elastic one-way valve film is towards check valve pedestal.
Described elastic one-way valve film is pellosil or rubber membrane.
Described venipuncture end needle tubing is by hose connection check valve pedestal; venipuncture end needle tubing is contained on needle handle; venipuncture end needle tubing is set with venipuncture needle protective sleeve outward; needle handle is provided with protruding stuck point; projection stuck point connects elastic slide block; respective protrusions stuck point is provided with former and later two draw-in grooves on the inwall of venipuncture needle protective sleeve, has chute on outer wall, and elastic slide block is arranged in chute.
The needle handle of said structure and venipuncture needle protective sleeve combine, and have formed the safe lunge-proof device of venipuncture end needle tubing.During use, the protruding stuck point on needle handle coordinates with two draw-in grooves of venipuncture needle protective sleeve: during venipuncture, protruding stuck point is stuck in the draw-in groove at rear portion, and venipuncture needle is beneficial to puncture in the outside of venipuncture needle protective sleeve; After blood sampling finishes; press the elastic slide block of needle handle downwards; projection stuck point is deviate from from the draw-in groove at rear portion; promote elastic slide block, make it along chute (being check valve pedestal direction) movement forward, when moving to anterior draw-in groove position; projection stuck point snaps in this draw-in groove automatically; it is inner that venipuncture needle is reduced to venipuncture needle protective sleeve, thereby prevent that venipuncture needle from stinging related personnel by mistake, guaranteed the security performance of blood taking needle in application process.
Described butt end needle tubing overcoat has protective sleeve, and this protective sleeve preferentially adopts gum cover.
The beneficial effect that the present invention compared with prior art had is:
This blood taking needle is rational in infrastructure, by one-way reverse-blocking flow structure is set, can prevent that in venous blood collection process, blood adverse current from blood taking tube enters human vein blood vessel, has guaranteed person of blood collecting's safety; Needle handle and the venipuncture needle protective sleeve of design constitute safe lunge-proof device, have guaranteed that venipuncture end needle tubing does not sting by mistake, have protected medical personnel, play the effect of safety blood taking.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-in the present invention;
Fig. 2 is the structural representation of embodiment bis-in the present invention;
Fig. 3 is the structural representation of needle handle in embodiment bis-;
Fig. 4 is the structural representation of embodiment bis-medium-sized vein puncture needle protective sleeves;
Fig. 5 is the structural representation of embodiment bis-needle handle Elastic slide blocks and protruding stuck point;
Fig. 6 is the left view of Fig. 5;
Fig. 7 is the axonometric chart of butt end needle stand.
In figure: 1, protective sleeve; 2, butt end needle tubing; 3, butt end needle stand; 4, elastic one-way valve film; 5, check valve pedestal; 6, venipuncture end needle tubing; 7, flexible pipe; 8, needle handle; 9, venipuncture needle protective sleeve; 10, elastic slide block; 11, protruding stuck point; 12, draw-in groove; 13, draw-in groove; 14, circulation groove.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described further:
As Fig. 1, shown in 2, one-way reverse-blocking safe blood-taking needle, comprise butt end needle tubing 2, butt end needle stand 3, check valve pedestal 5 and venipuncture end needle tubing 6, on butt end needle stand 3, connect butt end needle tubing 2, needle tubing 2 overcoats in butt end have protective sleeve 1, on check valve pedestal 5, connect venipuncture end needle tubing 6, butt end needle stand 3, check valve pedestal 5 interconnects, elastic one-way valve film 4 is set in the cavity forming between the two, butt end needle stand 3 is interior arranges circulation groove 14(as shown in Figure 7), check valve pedestal 5 is shiny surface towards the face of elastic one-way valve film 4, elastic one-way valve film 4, the shiny surface of circulation groove 14 and check valve pedestal 5 forms one-way reverse-blocking flow structure jointly.
Wherein, the elastomeric material that elastic one-way valve film 4 will select hardness to be less than 50, preferably pellosil or rubber membrane, its shape can have multiple, selects barrel-shapedly in the present invention, and its bottom surface is towards check valve pedestal 5.
Under normal condition, elastic one-way valve film 4 and check valve pedestal 5 being combined together tightly, when running into the blood pressure of vein, there are deformation in elastic one-way valve film 4, and the blood collecting flows in vacuum test tubes along circulation groove 14; When running into the buffer brake that derives from vacuum test tube inside, elastic one-way valve film 4 and check valve pedestal 5 being combined together tightly, path blockade, plays resistance reverse action.
In this one-way reverse-blocking safe blood-taking needle, the two kinds of forms that are connected with of check valve pedestal 5 and venipuncture end needle tubing 6:
Embodiment mono-:
Venipuncture end needle tubing 6 is directly connected on check valve pedestal 5, as shown in Figure 1.
Embodiment bis-:
Venipuncture end needle tubing 6 connects check valve pedestal 5 by flexible pipe 7, and venipuncture end needle tubing 6 is contained on needle handle 8, the outer suit venipuncture end of venipuncture end needle tubing 6 needle tube protecting sleeve 9, as shown in Figure 2.
The structure of needle handle 8 is as shown in Fig. 3,5,6, and needle handle 8 is provided with protruding stuck point 11, and protruding stuck point 11 connects elastic slide block 10.
As shown in Figure 4, the inwall of venipuncture end needle tube protecting sleeve 9 is provided with former and later two draw-in grooves 12,13 to the structure of venipuncture end needle tube protecting sleeve 9, on the outer wall of venipuncture end needle tube protecting sleeve 9, has chute.
The needle handle 8 of said structure and venipuncture end needle tube protecting sleeve 9 combine, and have formed the safe lunge-proof device of venipuncture end needle tubing 6.
During use, the protruding stuck point 11 on needle handle 8 coordinates with two draw-in grooves of venipuncture end needle tube protecting sleeve 9: during venipuncture, protruding stuck point 11 is stuck in the draw-in groove 13 at rear portion, and venipuncture end needle tubing 6 is beneficial to puncture in the outside of venipuncture end needle tube protecting sleeve 9; After blood sampling finishes; press the elastic slide block 10 of needle handle 8 downwards; projection stuck point 11 is deviate from from the draw-in groove 13 at rear portion; promote elastic slide block 10; make it along chute (being check valve pedestal 5 directions) movement forward; when moving to anterior draw-in groove 12 position; projection stuck point 11 snaps in this draw-in groove 12 automatically; venipuncture end needle tubing 6 is reduced to venipuncture end needle tube protecting sleeve 9 inside; thereby prevent that venipuncture end needle tubing 6 from stinging related personnel by mistake, guaranteed the security performance of blood taking needle in application process.
Claims (5)
1. an one-way reverse-blocking safe blood-taking needle, it is characterized in that: comprise butt end needle tubing (2), venipuncture end needle tubing (6) and be positioned at the connecting device between butt end needle tubing (2), venipuncture end needle tubing (6), in connecting device, being provided with one-way reverse-blocking flow structure;
Described connecting device comprises interconnective butt end needle stand (3) and check valve pedestal (5), the upper butt end needle tubing (2) that connects of butt end needle stand (3), the upper venipuncture end needle tubing (6) that connects of check valve pedestal (5), in cavity between butt end needle stand (3) and check valve pedestal (5), elastic one-way valve film (4) is set, circulation groove (14) is set in butt end needle stand (3), check valve pedestal (5) is shiny surface towards the face of elastic one-way valve film (4), elastic one-way valve film (4), the shiny surface of circulation groove (14) and check valve pedestal (5) forms one-way reverse-blocking flow structure jointly,
Described venipuncture end needle tubing (6) connects check valve pedestal (5) by flexible pipe (7); venipuncture end needle tubing (6) is contained on needle handle (8); the outer suit of venipuncture end needle tubing (6) venipuncture needle protective sleeve (9); needle handle (8) is provided with protruding stuck point (11); projection stuck point (11) connects elastic slide block (10); respective protrusions stuck point (11) is provided with former and later two draw-in grooves (12), (13) on the inwall of venipuncture needle protective sleeve (9); on outer wall, have chute, elastic slide block (10) is arranged in chute.
2. one-way reverse-blocking safe blood-taking needle according to claim 1, is characterized in that: described elastic one-way valve film is disc-shaped.
3. one-way reverse-blocking safe blood-taking needle according to claim 1, is characterized in that: described elastic one-way valve film is barrel-shaped, and the bottom surface of elastic one-way valve film is towards check valve pedestal (5).
4. according to the one-way reverse-blocking safe blood-taking needle described in claim 1,2 or 3, it is characterized in that: described elastic one-way valve film is pellosil or rubber membrane.
5. one-way reverse-blocking safe blood-taking needle according to claim 1, is characterized in that: described butt end needle tubing (2) overcoat has protective sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323237.4A CN102783954B (en) | 2012-09-04 | 2012-09-04 | Mono-directional inverse-inhibiting safe blood taking needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210323237.4A CN102783954B (en) | 2012-09-04 | 2012-09-04 | Mono-directional inverse-inhibiting safe blood taking needle |
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| Publication Number | Publication Date |
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| CN102783954A CN102783954A (en) | 2012-11-21 |
| CN102783954B true CN102783954B (en) | 2014-08-27 |
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| CN201210323237.4A Active CN102783954B (en) | 2012-09-04 | 2012-09-04 | Mono-directional inverse-inhibiting safe blood taking needle |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103126688A (en) * | 2013-03-25 | 2013-06-05 | 熊艳芳 | Anti-reflux structure of blood taking needle |
| CN105142521B (en) * | 2013-04-16 | 2017-07-14 | 张建铭 | Counterflow-preventing syringe-type vacuum blood collector |
| WO2014169436A1 (en) * | 2013-04-16 | 2014-10-23 | Zhang Jianming | Needle cylinder type vacuum blood sampler with jacking needle tube |
| CN104757980A (en) * | 2015-04-22 | 2015-07-08 | 浙江灵洋医疗器械有限公司 | Blood return preventing collection needle |
| CN107582075A (en) * | 2017-10-28 | 2018-01-16 | 刘贞宽 | Disposable pen type anti-reverse flow pattern vein blood taking needle safely |
| CN108403128A (en) * | 2018-03-24 | 2018-08-17 | 曹春荣 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
| CN110720932B (en) * | 2019-10-31 | 2022-11-01 | 华兰生物巫溪县单采血浆有限公司 | Be provided with multi-needle structure's piercing depth for blood test |
| CN115316375B (en) * | 2022-08-15 | 2023-08-18 | 四川大学华西医院 | Integrated puncture perfusion catheter for perfusion of abdominal organ transplantation donor |
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| EP1747755A1 (en) * | 2004-05-17 | 2007-01-31 | Sekisui Chemical Co., Ltd. | Backflow preventing structure of blood sampler, lure needle, blood sampling needle and blood sampling holder |
| CN101352346A (en) * | 2008-04-28 | 2009-01-28 | 贾宇东 | Safe reverse-resistant vacuum blood sampling guide-showing device and method of use thereof |
| CN102210589A (en) * | 2010-04-09 | 2011-10-12 | 贾宇东 | Duck-billed one-way counterseal supervision blood collector |
| CN202342055U (en) * | 2011-12-08 | 2012-07-25 | 王振民 | Vacuum blood collection negative pressure display device and multi-purpose vacuum vein blood collector |
| 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 |
| CN202776327U (en) * | 2012-09-04 | 2013-03-13 | 山东新华安得医疗用品有限公司 | Safe one-way non-return blood collecting needle |
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2012
- 2012-09-04 CN CN201210323237.4A patent/CN102783954B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1747755A1 (en) * | 2004-05-17 | 2007-01-31 | Sekisui Chemical Co., Ltd. | Backflow preventing structure of blood sampler, lure needle, blood sampling needle and blood sampling holder |
| CN101352346A (en) * | 2008-04-28 | 2009-01-28 | 贾宇东 | Safe reverse-resistant vacuum blood sampling guide-showing device and method of use thereof |
| CN102210589A (en) * | 2010-04-09 | 2011-10-12 | 贾宇东 | Duck-billed one-way counterseal supervision blood collector |
| CN202342055U (en) * | 2011-12-08 | 2012-07-25 | 王振民 | Vacuum blood collection negative pressure display device and multi-purpose vacuum vein blood collector |
| 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 |
| CN202776327U (en) * | 2012-09-04 | 2013-03-13 | 山东新华安得医疗用品有限公司 | Safe one-way non-return blood collecting needle |
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| CN102783954A (en) | 2012-11-21 |
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Address after: 255086 No. 999, Zunxian Road, high tech Zone, Zibo City, Shandong Province Patentee after: Shandong ande medical supplies Co.,Ltd. Address before: No.77, North Road, development zone, high tech Zone, Zibo City, Shandong Province Patentee before: SHINVA ANDE HEALTHCARE APPARATUS Co.,Ltd. |
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