CN210784375U - Venous blood collection anti-reflux device and blood taking needle - Google Patents
Venous blood collection anti-reflux device and blood taking needle Download PDFInfo
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- CN210784375U CN210784375U CN201921453963.1U CN201921453963U CN210784375U CN 210784375 U CN210784375 U CN 210784375U CN 201921453963 U CN201921453963 U CN 201921453963U CN 210784375 U CN210784375 U CN 210784375U
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- needle
- luer connector
- plug
- cavity
- lancet
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- 239000008280 blood Substances 0.000 title claims abstract description 66
- 210000004369 blood Anatomy 0.000 title claims abstract description 66
- 230000000151 anti-reflux effect Effects 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 53
- 239000010959 steel Substances 0.000 claims description 53
- 238000001990 intravenous administration Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 5
- 208000001848 dysentery Diseases 0.000 description 6
- 230000036772 blood pressure Effects 0.000 description 5
- 238000010241 blood sampling Methods 0.000 description 4
- 210000003462 vein Anatomy 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000017531 blood circulation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model discloses a venous blood collection anti-reflux device and a blood taking needle, which comprises a needle seat and a luer connector connected with the needle seat, wherein a cavity is arranged in the needle seat and is communicated with an internal channel of the luer connector; the resilient member is in a compressed state within the cavity. An object of the utility model is to provide a device and blood taking needle are prevented flowing against current in venous blood collection to there is the problem of blood hidden danger against the current in the venous blood collection in-process among the solution prior art, realize preventing that blood from flowing back to human purpose.
Description
Technical Field
The utility model relates to a venous blood collection field, concretely relates to venous blood collection anti-reflux device and blood taking needle.
Background
In the medical field, medical staff acquire physiological and pathological information of human bodies by collecting venous blood samples, so that the medical staff can correctly diagnose diseases and are generally applied in clinic. In the blood sampling operation, the blood taking needle is communicated with the vacuum blood sampling tube, after the negative pressure of the vacuum blood sampling tube is consumed, the tube is pulled out or the tourniquet is loosened, the pressure in the needle tube is larger than the venous blood pressure instantly, and the blood can flow reversely. Because the vacuum blood collection tube used at present is mostly in a non-sterile state, the blood collection tube is directly or indirectly communicated with a human blood vessel through a blood collection needle, and if once polluted blood flows back to a blood circulation system, serious harm can be brought to a patient. The vein blood taking needle in the prior art has a poor anti-reflux effect or a complex structure and is difficult to assemble, so that the cost is high and the vein blood taking needle is difficult to apply generally. Therefore, it is important to develop a lancet capable of effectively preventing the reverse flow of blood back into the human body and being generally used.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device and blood taking needle are prevented flowing against current in venous blood collection to there is the problem of blood hidden danger against the current in the venous blood collection in-process among the solution prior art, realize preventing that blood from flowing back to human purpose.
The utility model discloses a following technical scheme realizes:
a venous blood collection anti-reflux device comprises a needle seat and a Ruhr joint connected with the needle seat, wherein a cavity is arranged in the needle seat and is communicated with an internal channel of the Ruhr joint, an elastic piece coaxial with the internal channel of the Ruhr joint is arranged in the cavity, one end of the elastic piece close to the direction of the Ruhr joint is connected with a plug, the plug is matched with the end part of the Ruhr joint, and the plug can plug the internal channel of the Ruhr joint; the resilient member is in a compressed state within the cavity.
The problem to have blood to flow against current hidden danger among the prior art among the venous blood collection process, the utility model provides a venous blood collection prevents device against current, luer connects and is used for linking to each other respectively with lancet syringe needle and needle file, wherein has the cavity with the internal channel lug connection who luer connects in the needle file, the cavity is at first as blood passageway to at the inside elastic component that sets up of cavity, the internal channel that elastic component and luer connect is coaxial, and its one end that is close to luer and connects the end cap, therefore the effort of elastic component can make the end cap be close to or keep away from luer and connect. The plug is matched with the end part of the luer connector, so that the plug can plug the internal channel of the luer connector from one end, and the elastic piece is in a compressed state in the cavity, so that the plug can be pressed to the end part of the luer connector and plug the luer connector under the action of the elastic force of the elastic piece. The utility model discloses during the use, will luer connect and lancet syringe needle links to each other, needle file and vacuum test tube intercommunication, when beginning to take a blood sample, because the existence of the inside negative pressure of vacuum test tube, the elastic force that the elastic component was overcome to the blood pressure head pushes away the end cap, blood normally gets into in the needle file reentrant vacuum test tube through luer connects, after the negative pressure of vacuum test tube has consumed, the blood pressure head has been not enough to push open the end cap, the elastic force of elastic component presses the end cap to luer end portion again this moment, thereby stop the blood backward flow, there is the problem of blood counter-current hidden danger in the vein blood sample collection process among the solution prior art, realize preventing that blood from backflowing to the human purpose.
The plug is a steel ball, and one end of the luer connector close to the steel ball is an arc-shaped groove matched with the steel ball. The arc-shaped groove is preferably a hemispherical groove, and the steel ball can just seal the arc-shaped groove, so that effective plugging and sealing are realized.
A guide post is arranged on one side, away from the luer connector, of the cavity, and one end, away from the luer connector, of the elastic piece is sleeved on the guide post. The guide post provides an installation station for the elastic part, so that the elastic part is stable in structure in the cavity.
The elastic piece is a spring.
The needle base further comprises a puncture plug steel needle hole communicated with the cavity, the puncture plug steel needle hole is located at one end, far away from the luer connector, of the cavity, and the puncture plug steel needle hole is coaxial with an internal channel of the luer connector. The puncture plug steel needle hole is used for installing a puncture plug steel needle and is convenient to be connected with the vacuum blood collection tube through the puncture plug steel needle.
Based on the blood taking needle of the venous blood collection anti-reflux device, one end of the luer connector, which is far away from the needle seat, is connected with the lancing steel needle. The blood pricking steel needle is used for pricking veins to collect blood.
The luer connector is connected with the blood pricking steel needle through a hose.
One end of the hose, which is far away from the luer connector, is fixedly connected with a needle handle, and the lancing steel needle is connected with the needle handle; the blood lancet device further comprises a lancet sheath detachably connected to the needle handle, and the lancet steel needle is located in the lancet sheath. The needle handle plays a role in connecting the hose with the lancing steel needle, so that the hose and the lancing steel needle are connected stably and reliably and have good sealing property. The lancet shield is used to protect the lancet and is removed when it is needed.
Still include on the needle file with the thorn stopper steel needle hole that the cavity is linked together, thorn stopper steel needle insert extremely in the thorn stopper steel needle hole, still including dismantling the connection the thorn stopper needle sheath on the needle file, thorn stopper steel needle is located thorn stopper needle sheath. The puncture needle sheath is used for protecting the puncture steel needle and is detached when in use.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model relates to a venous blood collection anti-reflux device and blood taking needle, will luer connect and sting the blood steel needle and link to each other during the use, the needle file passes through thorn stopper steel needle and vacuum test tube intercommunication, when beginning the blood sampling, because the existence of the inside negative pressure of vacuum test tube, the elastic force that the elastic component was overcome to the blood pressure head pushes away the end cap, blood normally gets into the needle file through luer and gets into in the vacuum test tube again, after the negative pressure of vacuum test tube has consumed, the blood pressure head has been not enough to push away the end cap, the elastic force of elastic component presses the end cap to luer end cap tip again this moment, thereby stop the blood backward flow, there is the problem of blood hidden danger against the current in the venous blood collection process among the solution prior art, realize preventing that blood from flowing back to human.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Reference numbers and corresponding part names in the drawings:
1-needle seat, 2-elastic piece, 3-plug, 4-luer joint, 5-puncture steel needle, 6-puncture needle sheath, 7-hose, 8-lancet sheath, 9-puncture steel needle, 10-needle handle, 11-guide column and 12-puncture steel needle hole.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
Example 1:
the venous blood collection anti-reflux device comprises a needle seat 1 and a luer connector 4 connected with the needle seat 1, wherein a cavity is arranged in the needle seat 1 and is communicated with an internal channel of the luer connector 4, an elastic part 2 coaxial with the internal channel of the luer connector 4 is arranged in the cavity, one end, close to the luer connector 4, of the elastic part 2 is connected with a plug 3, the plug 3 is matched with the end of the luer connector 4, and the plug 3 can plug the internal channel of the luer connector 4; the resilient member 2 is in a compressed state within the cavity.
Preferably, the plug 3 is a steel ball, and one end of the luer connector 4 close to the steel ball is an arc-shaped groove matched with the steel ball. A guide column 11 is arranged on one side of the cavity far away from the luer connector 4, and one end of the elastic part 2 far away from the luer connector 4 is sleeved on the guide column 11. The elastic member 2 is a spring. Still include on the needle file 1 with the thorn stopper steel needle hole 12 that the cavity is linked together, thorn stopper steel needle hole 12 is located the cavity and keeps away from the one end of luer 4, just thorn stopper steel needle hole 12 is coaxial with the interior passageway of luer 4.
Example 2:
a blood taking needle is characterized in that on the basis of the backflow prevention device in embodiment 1, one end of a luer connector 4 far away from a needle base 1 is connected with a lancing steel needle 9. The luer connector 4 is connected with a blood pricking steel needle 9 through a hose 7. One end of the hose 7, which is far away from the luer connector 4, is fixedly connected with a needle handle 10, and the lancing steel needle 9 is connected with the needle handle 10; also included is a lancet shield 8 removably attached to the needle handle 10, the lancet needle 9 being located within the lancet shield 8. Still include on the needle file 1 with the thorn stopper steel needle hole 12 that the cavity is linked together, thorn stopper steel needle 5 insert extremely in the thorn stopper steel needle hole 12, still including dismantling the connection the thorn stopper needle sheath 6 on the needle file 1, thorn stopper steel needle 5 is located thorn stopper needle sheath 6.
Example 3:
a blood collection needle is different from embodiment 2 in that a flexible tube 7 is not provided, a lancet needle 9 is directly connected to a luer 4, and a lancet cover is detachably connected to the luer.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. The venous blood collection anti-reflux device comprises a needle seat (1) and a luer connector (4) connected with the needle seat (1), and is characterized in that a cavity is arranged in the needle seat (1), the cavity is communicated with an internal channel of the luer connector (4), an elastic part (2) coaxial with the internal channel of the luer connector (4) is arranged in the cavity, one end, close to the direction of the luer connector (4), of the elastic part (2) is connected with a plug (3), the plug (3) is matched with the end of the luer connector (4), and the plug (3) can plug the internal channel of the luer connector (4); the elastic element (2) is in a compressed state in the cavity.
2. The anti-reflux device for venous blood sample collection according to claim 1, wherein the plug (3) is a steel ball, and one end of the luer connector (4) close to the steel ball is an arc-shaped groove matched with the steel ball.
3. The anti-reflux device for venous blood sample collection according to claim 1, wherein a guide post (11) is arranged on one side of the cavity far away from the luer connector (4), and one end of the elastic part (2) far away from the luer connector (4) is sleeved on the guide post (11).
4. An intravenous blood sample collection anti-reflux device according to claim 1, wherein said elastic member (2) is a spring.
5. The venous blood collection anti-reflux device as claimed in claim 1, wherein the needle holder (1) further comprises a steel needle plug hole (12) communicated with the cavity, the steel needle plug hole (12) is positioned at one end of the cavity far away from the luer connector (4), and the steel needle plug hole (12) is coaxial with the internal channel of the luer connector (4).
6. A blood collection needle of an anti-reflux device for venous blood collection based on any one of claims 1 to 5, characterized in that the end of the luer (4) far away from the needle holder (1) is connected with a lancet (9).
7. The lancet according to claim 6, characterized in that the luer (4) and the lancet (9) are connected by a hose (7).
8. The lancet according to claim 7, characterized in that the end of the flexible tube (7) remote from the luer (4) is fixedly connected with a needle handle (10), and the lancet (9) is connected with the needle handle (10); the lancet device also comprises a lancet shield (8) detachably connected to the needle handle (10), and the lancet steel needle (9) is positioned in the lancet shield (8).
9. The blood collection needle according to claim 6, characterized in that the needle base (1) further comprises a steel needle puncture plug hole (12) communicated with the cavity, the steel needle puncture plug (5) is inserted into the steel needle puncture plug hole (12), and further comprises a steel needle puncture plug sheath (6) detachably connected to the needle base (1), and the steel needle puncture plug (5) is positioned in the steel needle puncture plug sheath (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453963.1U CN210784375U (en) | 2019-09-03 | 2019-09-03 | Venous blood collection anti-reflux device and blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921453963.1U CN210784375U (en) | 2019-09-03 | 2019-09-03 | Venous blood collection anti-reflux device and blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210784375U true CN210784375U (en) | 2020-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921453963.1U Active CN210784375U (en) | 2019-09-03 | 2019-09-03 | Venous blood collection anti-reflux device and blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210784375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
| CN114587355A (en) * | 2022-04-06 | 2022-06-07 | 连云港市东方医院 | An arterial puncture needle for preventing blood backflow |
-
2019
- 2019-09-03 CN CN201921453963.1U patent/CN210784375U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111760125A (en) * | 2020-07-16 | 2020-10-13 | 徐敏旺 | Puncture needle assembly for internal medicine |
| CN114587355A (en) * | 2022-04-06 | 2022-06-07 | 连云港市东方医院 | An arterial puncture needle for preventing blood backflow |
| CN114587355B (en) * | 2022-04-06 | 2022-10-25 | 连云港市东方医院 | Artery puncture needle capable of preventing blood from flowing reversely |
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