CN204971324U - Prevent blood taking needle against current - Google Patents
Prevent blood taking needle against current Download PDFInfo
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- CN204971324U CN204971324U CN201520753406.7U CN201520753406U CN204971324U CN 204971324 U CN204971324 U CN 204971324U CN 201520753406 U CN201520753406 U CN 201520753406U CN 204971324 U CN204971324 U CN 204971324U
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- blood
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- counterflow
- diaphragm
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Abstract
The utility model discloses a prevent blood taking needle against current, including blood sampling container, pjncture needle and blood sampling needle tubing, blood sampling container bottle mouth department is provided with the stopper, is provided with the pjncture needle in the stopper, and the pjncture needle extends to in the blood sampling container, the pjncture needle passes through the check valve and links to each other with the blood sampling needle tubing, the check valve include that first joint, second connect and the assembly between first joint and second connect only permit blood from blood sampling needle tubing one end to the one -way diaphragm that passes through of pjncture needle one end, be provided with the backup pad that supports the diaphragm in the second connects, the backup pad lies in the right side of diaphragm, is provided with the weakening groove that the pressurized destroyed on the diaphragm, corresponds in the backup pad to weaken the trench and put and be provided with through flow opening, the left side of diaphragm corresponds the weakening groove fixedly connected with of department and prevents gum cover against the current. This novel structural design is reasonable, convenient to use, and safety and sanitation, the blood that prevents that can be more reliable against the current, is avoided polluting human blood against the current because of blood.
Description
Technical field
This utility model relates to a kind of medical instruments field, specifically a kind of counterflow-preventing blood taking needle.
Background technology
Disposable lancet and single use human vein blood sample vacuum blood collection container support the use.Disposable lancet mainly comprises blood-collecting needle tube, puncture needle, and blood-collecting needle tube is connected with puncture needle by link.Puncture needle penetrates human vein blood sample vacuum blood collection container, and blood collecting containers is communicated with blood taking needle.Current blood taking needle divides and softly connects formula and firmly connect formula: the soft link connecing formula blood taking needle comprises one section of transparent connecting hose, is convenient to observe blood back; Firmly connect formula blood taking needle, the needle stand of blood taking needle is directly connected with the needle stand of puncture needle, or Paracentesis needle holder is that opaque plastics are made and do not observed blood back.When firmly connecing the use of formula blood taking needle, getting a blood collecting containers stretches in holder by safety helmet end, forefinger and middle finger block holder handle place thumb and prop up bottom container bottle, puncture needle is penetrated blood collecting containers plug, blood sucks blood collecting containers automatically, and in blood collecting containers, vacuum takes off blood taking needle from human body after disappearing completely.
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.
Utility model content
The purpose of this utility model is to provide a kind of counterflow-preventing blood taking needle, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of counterflow-preventing blood taking needle, comprise blood collecting containers, puncture needle and blood-collecting needle tube, described blood collecting containers bottle mouth position is provided with stopper, is provided with puncture needle in described stopper, and described puncture needle extends in blood collecting containers; Described puncture needle is connected with blood-collecting needle tube by check (non-return) valve; Described check (non-return) valve comprise the first joint, the second joint and be assemblied between the first joint and the second joint only allow blood from blood-collecting needle tube one end to puncture needle one end the unidirectional diaphragm passed through, the gripper shoe supporting diaphragm is provided with in described second joint, described gripper shoe is positioned at the right side of diaphragm, described diaphragm is provided with the weakening groove of compression damage, in described gripper shoe, corresponding weakening slot is set up and is provided with through flow hole; The left side correspondence of described diaphragm weakens groove place and is fixedly connected with counterflow-preventing gum cover, and described counterflow-preventing gum cover is in being horizontally disposed with, and described weakening slot is in the inner side of counterflow-preventing gum cover; Be provided with blood outlet on the left of described first joint, described puncture needle is fixed in blood outlet; Be provided with blood inlet on the right side of described second joint, described blood-collecting needle tube is fixed in blood inlet.
As further program of the utility model: described first joint or the second joint are provided with blood back observation structure.
As this utility model further scheme: described blood-collecting needle tube is outside equipped with the blood taking needle helmet coordinated with it.
As this utility model further scheme: on the needle body of described puncture needle, cover has safe fluid stopping cover.
As this utility model further scheme: described weakening groove is cross recess.
Compared with prior art, the beneficial effects of the utility model are: during use, after requiring patient's blood sampling site to carry out disinfection routinely, blood-collecting needle tube is thrust vein blood vessel and observes blood back, now the pressure of puncture needle one end is atmospheric pressure, conventional venous pressure is slightly less than atmospheric pressure, check (non-return) valve cuts out, puncture needle is penetrated the stopper of blood collecting containers, the pressure of puncture needle one end is close to vacuum, under differential pressure action, weaken groove to be destroyed, check (non-return) valve is opened automatically, blood is successively through blood inlet, through flow hole, weaken groove, enter in blood collecting containers by puncture needle after counterflow-preventing gum cover and blood outlet, blood collecting containers internal gas pressure increases gradually, when blood collecting containers internal gas pressure is a bit larger tham venous pressure, diaphragm is adjacent to supporter under pressure, thus weakening groove is closed, check (non-return) valve keeps cutting out, prevent blood backflow, counterflow-preventing gum cover is set, the blood of its inwall is converged by intermolecular force absorption, forming negative pressure with air exclusion causes counterflow-preventing gum cover to be crushed, and when blood enters from blood inlet one end, the counterflow-preventing gum cover of flattening can be washed open by blood flow, make blood proper flow, when blood enters from blood exit end, counterflow-preventing gum cover can not be washed open by blood, and the free end of the counterflow-preventing gum cover of collapsed state can be made to bend, play counterflow-preventing effect, play further counterflow-preventing effect.Therefore counterflow-preventing gum cover and diaphragm combined effect make check (non-return) valve can prevent blood back flow more reliably.
Blood back observation structure is set, the situation of blood back can be observed; Blood taking needle helmet is set, makes blood-collecting needle tube safety and sanitation; Arrange safe fluid stopping cover, can thrust blood collecting containers rear enclosed socket at puncture needle, anti-Hemostatic Oral Liquid pollutes from this outflow.
In sum, this new structural design is reasonable, and easy to use, safety and sanitation, can prevent blood back flow more reliably, avoids because blood back flow pollutes blood of human body.
Accompanying drawing explanation
Fig. 1 is the structural representation of counterflow-preventing blood taking needle.
Fig. 2 is the structural representation of check (non-return) valve in counterflow-preventing blood taking needle.
Fig. 3 is the structural representation of counterflow-preventing blood taking needle check (non-return) valve when counterflow-preventing gum cover adsorbed state.
Fig. 4 is the structural representation of diaphragm in counterflow-preventing blood taking needle.
In figure: 1-blood collecting containers, 2-puncture needle, 3-stopper, 4-check (non-return) valve, 41-first joint, 42-second joint, 43-gripper shoe, 44-blood inlet, 45-diaphragm, 451-weakens groove, 46-counterflow-preventing gum cover, 47-blood exports, 48-through flow hole, 5-blood-collecting needle tube, 6-blood taking needle helmet.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Refer to Fig. 1-4, a kind of counterflow-preventing blood taking needle, comprise blood collecting containers 1, puncture needle 2 and blood-collecting needle tube 5, described blood collecting containers 1 bottle mouth position is provided with stopper 3, is provided with puncture needle 2 in described stopper 3, and described puncture needle 2 extends in blood collecting containers 1; Described puncture needle 2 is connected with blood-collecting needle tube 5 by check (non-return) valve 4; Described check (non-return) valve 4 comprise the first joint 41, second joint 42 and be assemblied between the first joint 41 and the second joint 42 only allow blood from blood-collecting needle tube 5 one end to puncture needle 2 one end the unidirectional diaphragm 45 passed through, the gripper shoe 43 supporting diaphragm 45 is provided with in described second joint 42, described gripper shoe 43 is positioned at the right side of diaphragm 45, described diaphragm 45 is provided with the weakening groove 451 of compression damage, in described gripper shoe 43, corresponding weakening on groove 451 position is provided with through flow hole 48; The left side correspondence of described diaphragm 45 weakens groove 451 place and is fixedly connected with counterflow-preventing gum cover 46, and described counterflow-preventing gum cover 46 is in being horizontally disposed with, and described weakening groove 451 is positioned at the inner side of counterflow-preventing gum cover 46; Be provided with blood outlet 47 on the left of described first joint 41, described puncture needle 2 is fixed in blood outlet 47; Be provided with blood inlet 44 on the right side of described second joint 42, described blood-collecting needle tube 5 is fixed in blood inlet 44.
Operation principle of the present utility model is: during use, after requiring patient's blood sampling site to carry out disinfection routinely, blood-collecting needle tube 5 is thrust vein blood vessel and observes blood back, now the pressure of puncture needle 2 one end is atmospheric pressure, conventional venous pressure is slightly less than atmospheric pressure, check (non-return) valve 4 cuts out, puncture needle 2 is penetrated the stopper 3 of blood collecting containers 1, the pressure of puncture needle 2 one end is close to vacuum, under differential pressure action, weaken groove 451 to be destroyed, check (non-return) valve 4 is opened automatically, blood is successively through blood inlet 44, through flow hole 48, weaken groove 451, enter in blood collecting containers 1 by puncture needle 2 after counterflow-preventing gum cover 46 and blood outlet 47, blood collecting containers 1 internal gas pressure increases gradually, when blood collecting containers 1 internal gas pressure is a bit larger tham venous pressure, diaphragm 45 is adjacent to supporter 43 under pressure, thus weakening groove 451 is closed, check (non-return) valve 4 keeps cutting out, prevent blood backflow, counterflow-preventing gum cover 46 is set, the blood of its inwall is converged by intermolecular force absorption, forming negative pressure with air exclusion causes counterflow-preventing gum cover 46 to be crushed, when blood enters from blood inlet 44 one end, the counterflow-preventing gum cover 46 of flattening can be washed open by blood flow, make blood proper flow, when blood from blood export 47 one end enter time, counterflow-preventing gum cover 46 can not be washed open by blood, and the free end of the counterflow-preventing gum cover 46 of collapsed state can be made to bend, play counterflow-preventing effect, play further counterflow-preventing effect.Therefore counterflow-preventing gum cover 46 and diaphragm 45 combined effect make check (non-return) valve 4 can prevent blood back flow more reliably.
Blood back observation structure is set, the situation of blood back can be observed; Blood taking needle helmet 6 is set, makes blood-collecting needle tube 5 safety and sanitation; Arrange safe fluid stopping cover, can thrust blood collecting containers rear enclosed socket at puncture needle, anti-Hemostatic Oral Liquid pollutes from this outflow.
To those skilled in the art, obvious this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or basic feature, can realize this utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in this utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (5)
1. a counterflow-preventing blood taking needle, comprises blood collecting containers, puncture needle and blood-collecting needle tube, it is characterized in that, described blood collecting containers bottle mouth position is provided with stopper, is provided with puncture needle in described stopper, and described puncture needle extends in blood collecting containers; Described puncture needle is connected with blood-collecting needle tube by check (non-return) valve; Described check (non-return) valve comprise the first joint, the second joint and be assemblied between the first joint and the second joint only allow blood from blood-collecting needle tube one end to puncture needle one end the unidirectional diaphragm passed through, the gripper shoe supporting diaphragm is provided with in described second joint, described gripper shoe is positioned at the right side of diaphragm, described diaphragm is provided with the weakening groove of compression damage, in described gripper shoe, corresponding weakening slot is set up and is provided with through flow hole; The left side correspondence of described diaphragm weakens groove place and is fixedly connected with counterflow-preventing gum cover, and described counterflow-preventing gum cover is in being horizontally disposed with, and described weakening slot is in the inner side of counterflow-preventing gum cover; Be provided with blood outlet on the left of described first joint, described puncture needle is fixed in blood outlet; Be provided with blood inlet on the right side of described second joint, described blood-collecting needle tube is fixed in blood inlet.
2. counterflow-preventing blood taking needle according to claim 1, is characterized in that, described first joint or the second joint are provided with blood back observation structure.
3. counterflow-preventing blood taking needle according to claim 1, is characterized in that, described blood-collecting needle tube is outside equipped with the blood taking needle helmet coordinated with it.
4. counterflow-preventing blood taking needle according to claim 1, is characterized in that, on the needle body of described puncture needle, cover has safe fluid stopping cover.
5. counterflow-preventing blood taking needle according to claim 1, is characterized in that, described weakening groove is cross recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753406.7U CN204971324U (en) | 2015-09-25 | 2015-09-25 | Prevent blood taking needle against current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753406.7U CN204971324U (en) | 2015-09-25 | 2015-09-25 | Prevent blood taking needle against current |
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| Publication Number | Publication Date |
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| CN204971324U true CN204971324U (en) | 2016-01-20 |
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| CN201520753406.7U Active CN204971324U (en) | 2015-09-25 | 2015-09-25 | Prevent blood taking needle against current |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523905A (en) * | 2018-04-28 | 2018-09-14 | 哈尔滨鼓润生物技术有限公司 | A kind of safety blood taking device |
| CN111227847A (en) * | 2020-01-13 | 2020-06-05 | 西京学院 | Anti-reflux venous blood sampling device and anti-reflux method |
-
2015
- 2015-09-25 CN CN201520753406.7U patent/CN204971324U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108523905A (en) * | 2018-04-28 | 2018-09-14 | 哈尔滨鼓润生物技术有限公司 | A kind of safety blood taking device |
| CN111227847A (en) * | 2020-01-13 | 2020-06-05 | 西京学院 | Anti-reflux venous blood sampling device and anti-reflux method |
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| C14 | Grant of patent or utility model | ||
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Address after: 330052 No. 889 Fushan Second Road, Xiaolan Economic Development Zone, Nanchang City, Jiangxi Province Patentee after: Jiangxi Ruibang Industrial Group Co., Ltd. Address before: 330000 No. 889 Fushan Second Road, Xiaolan Economic Development Zone, Nanchang City, Jiangxi Province Patentee before: Jiangxi Fuerkang Industrial Group Co., Ltd. |