CN204336933U - Counterflow-preventing blood taking needle - Google Patents
Counterflow-preventing blood taking needle Download PDFInfo
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- CN204336933U CN204336933U CN201420677434.0U CN201420677434U CN204336933U CN 204336933 U CN204336933 U CN 204336933U CN 201420677434 U CN201420677434 U CN 201420677434U CN 204336933 U CN204336933 U CN 204336933U
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- blood
- needle
- joint
- puncture needle
- counterflow
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Abstract
The utility model discloses a kind of counterflow-preventing blood taking needle preventing blood back flow, it comprises blood-collecting needle tube, puncture needle, blood-collecting needle tube is connected with puncture needle by link, described link is the link being provided with visible blood-flow and resistant to blood backflow device, described needle stand is provided with the visible window device of observable blood back situation, resistant to blood backflow device be pressure reduction control only allow blood from blood taking needle one end to puncture needle one end the unidirectional check valve passed through, check valve comprise 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 supporter supporting described diaphragm on the direction being pointed to blood-collecting needle tube one end by puncture needle one end is provided with in described first joint, diaphragm is provided with the weakening groove of compression damage, the shape of supporter, position and the shape weakening groove, position is corresponding, can effectively prevent blood back flow from polluting blood of human body, easy to use, structure is simple.
Description
Technical field
This utility model relates to medical device arts, especially a kind of blood-taking device for gathering human vein blood.
Background technology
Disposable lancet and single use human vein blood sample evacuated 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 evacuated collection container, and collection container 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 collection container 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 collection container plug, blood sucks collection container automatically, and in collection container, 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
There is the deficiency of the probability polluting blood of human body for overcoming existing blood taking needle, technical problem to be solved in the utility model is to provide a kind of counterflow-preventing blood taking needle can observed blood back situation and prevent out body blood back flow.
This utility model solves the technical scheme that its technical problem adopts: counterflow-preventing blood taking needle, comprise blood-collecting needle tube, puncture needle, blood-collecting needle tube is connected with puncture needle by link, and described link is the link being provided with resistant to blood backflow device.
Described resistant to blood backflow device be pressure reduction control only allow blood from blood-collecting needle tube one end to puncture needle one end the unidirectional check valve passed through.
Described check 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 supporter supporting described diaphragm on the direction being pointed to blood taking needle one end by puncture needle one end is provided with in described first joint, described diaphragm is provided with the weakening groove of compression damage, shape, the position of the shape of supporter, position and weakening groove are corresponding.
Described first joint or the second joint are provided with blood back observation structure.
The two ends of described check valve are connected with blood-collecting needle tube, puncture needle respectively by transparent connecting hose.
The needle stand of described puncture needle is provided with the visual window of observable blood back situation.
On the needle body of described puncture needle, cover has safe fluid stopping cover.
Described puncture needle is connected with collection container, and described collection container comprises the stopper of vessel and closed container body and safe helmet.
The beneficial effects of the utility model are: effectively prevent blood back flow from polluting blood of human body, firmly connect the situation that formula blood taking needle also can observe blood back, easy to use, structure is simple.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model blood taking needle (soft connect formula).
Fig. 2 is the structural representation of this utility model blood taking needle (firmly connecing formula).
Fig. 3 is the schematic diagram of check valve in Fig. 2.
Fig. 4 is the schematic diagram of diaphragm in Fig. 3.
Fig. 5 is the schematic diagram (A to) of supporter on the first joint of coordinating with diaphragm in Fig. 4.
Fig. 6 be this utility model can the schematic diagram of another kind of check valve diaphragm.
Fig. 7 is the schematic diagram B of the Fig. 8 (to) of supporter on the first joint of coordinating with diaphragm in Fig. 6.
Fig. 8 is the schematic diagram of the check valve formed with diaphragm shown in Fig. 6, Fig. 7 and the first joint.
Be labeled as in figure: 1-vessel, 2-stopper, the safe helmet of 3-, the safe fluid stopping cover of 4-, 5-puncture needle, 6-needle stand, the transparent connecting hose of 7-, 8-check valve, 9-blood-collecting needle tube, 10-blood taking needle helmet, 11-transparent tube.81-first joint, 82-second joint, 83-diaphragm, 810-supporter, 830-weakens groove.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further illustrated.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, counterflow-preventing blood taking needle of the present utility model comprises blood-collecting needle tube 9, puncture needle 5, blood-collecting needle tube 9 is connected with puncture needle 5 by link, described link is the link being provided with resistant to blood backflow device, described resistant to blood backflow device be pressure reduction control only allow blood from blood-collecting needle tube 9 one end to puncture needle 5 one end the unidirectional check valve 8 passed through.Inventor not only notices the pollution problem that blood back flow is possible, be also noted that in blood collection procedure, puncture needle 5 thrusts the air pressure change of puncture needle 5 one end before and after collection container, and utilize this change cleverly, use for reference existing transfusion device one-way air inlet structure, have devised the one-way valve structures of simplification, described check valve 8 comprise be assemblied between the first joint 81 and the second joint 82 only allow blood from blood-collecting needle tube one end to puncture needle one end the unidirectional diaphragm 83 passed through, diaphragm 83 controls its opening and closing by pressure reduction, the supporter 810 supporting described diaphragm 83 on the direction being pointed to blood-collecting needle tube 9 one end by puncture needle 5 one end is provided with in described first joint 81, the position and the shape that weaken groove 830 and supporter 810 are mutually corresponding.Supporter 810 is for when the air pressure of puncture needle 5 one end is higher than blood-collecting needle tube 9 one end blood pressure, support diaphragm 83, utilize pressure reduction make on diaphragm 83 because of weaken groove 830 destroy formed via hole self-closed, as corresponding resistant to blood backflow device, effectively prevent blood back flow from polluting blood of human body, easy to use, safe.
As shown in Fig. 3, Fig. 4, Fig. 5, weakening groove 830 on the diaphragm 83 of described check valve 8 can be radial groove, as cross recess, corresponding supporter 810 also does across, as shown in Fig. 6, Fig. 7, Fig. 8, weakening groove 830 on the diaphragm 83 of described check valve 8 also can be multiple parallel straight troughs offered, and as three word grooves, corresponding supporter 810 also zigzags.
Preferably on described first joint 81 or the second joint 82, be provided with blood back observation structure, so that firmly connect the use of formula hemostix, first joint 81, second joint 82 entirety can be made with transparent material, also can be the visible observation mouth being provided with part on the first joint 81 or the second joint 82; Also the needle stand 6 of puncture needle 5 can be arranged the visual window of observable blood back situation, be convenient to observe blood back situation when blood-collecting needle tube 9 thrusts blood vessel.
On the needle body of described puncture needle 5, cover has safe fluid stopping to overlap 4, and can thrust blood collecting containers rear enclosed socket at puncture needle 5, anti-Hemostatic Oral Liquid pollutes from this outflow.
embodiment 1:
As shown in Fig. 1, Fig. 3, Fig. 4, Fig. 5, the soft formula counterflow-preventing blood taking needle that connects comprises vessel 1, the stopper 2 of closed container body 1 and the collection container of safe helmet 3 formation, and the blood-collecting needle tube 9 connected successively, coupling transparent connecting hose 7, the larger-diameter transparent connecting hose 7 of needle stand 6, of minor diameter, check valve 8, another larger-diameter transparent connecting hose 7, another needle stand 6, the transparent connecting hose 7 of another minor diameter, another needle stand 6, puncture needle 5, the needle tubing of blood-collecting needle tube 9 is socketed with blood taking needle helmet 10.Check valve 8 comprise be assemblied between the first joint 81 and the second joint 82 only allow blood from blood taking needle one end to puncture needle one end the unidirectional diaphragm 83 passed through, the crisscross supporting body 810 supporting described diaphragm 83 on the direction being pointed to blood-collecting needle tube 9 one end by puncture needle 5 one end is provided with in first joint 81, the cross described diaphragm 83 being provided with compression damage weakens groove 830, and the position of supporter 810 is corresponding with the position weakening groove 830.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 5 one end is atmospheric pressure, conventional venous pressure is slightly less than atmospheric pressure, check valve 8 is closed, puncture needle 5 is penetrated the stopper 2 of collection container, the pressure of puncture needle 5 one end is close to vacuum, under differential pressure action, weaken groove 830 to be destroyed, check valve 8 is opened automatically, blood sucks in collection container automatically, collection container internal gas pressure increases gradually, when container internal gas pressure to be collected is a bit larger tham venous pressure, diaphragm 83 is adjacent to supporter 810 under pressure, check valve 8 is closed automatically, air pressure in collection container keeps stable, check valve 8 keeps reliable closedown, prevent blood backflow.
embodiment 2:
As Fig. 2, Fig. 3, Fig. 4, shown in Fig. 5, firmly connect formula counterflow-preventing blood taking needle and comprise vessel 1, the collection container that the stopper 2 of closed container body 1 and safe helmet 3 are formed, and the blood taking needle 9 connected successively, check valve 8, transparent tube 11 and puncture needle 5, the needle tubing of blood-collecting needle tube 9 is socketed with blood taking needle helmet 10, check valve 8 comprise be assemblied between the first joint 81 and the second joint 82 only allow blood from blood taking needle one end to puncture needle one end the unidirectional diaphragm 83 passed through, the crisscross supporting body 810 supporting described diaphragm 83 on the direction being pointed to blood taking needle 9 one end by puncture needle 5 one end is provided with in first joint 81, cross diaphragm 83 being provided with compression damage weakens groove 830, supporter 810 is corresponding with the position weakening groove 830, first joint 81 mates with the hub portion of blood-collecting needle tube 9 and is connected, second joint 82 is mated with the hub portion of puncture needle 5 by transparent tube 11 and is connected.When blood-collecting needle tube 9 thrusts blood vessel, observe blood back situation by transparent tube 11.
During use, blood-collecting needle tube is thrust vein blood vessel, blood back is can be observed from transparent tube 11, the pressure of puncture needle 5 one end is atmospheric pressure, conventional venous pressure is slightly less than atmospheric pressure, be not enough to destroy and weaken groove 830, closed check valve 8, getting a collection container stretches in holder by safety helmet end, forefinger and middle finger block holder handle place thumb and prop up bottom container bottle, puncture needle 5 is penetrated the stopper 2 of collection container, the pressure of puncture needle 5 one end is close to vacuum, pressure reduction reaches the degree can destroyed and weaken groove 830, diaphragm 83 breaks herein, check valve 8 is opened automatically, blood sucks in collection container automatically, collection container internal gas pressure increases gradually, when container internal gas pressure to be collected is a bit larger tham venous pressure, diaphragm 83 is adjacent to supporter 810 under pressure, check valve 8 is closed automatically, air pressure in collection container keeps stable, check valve 8 keeps reliable closedown, prevent blood backflow.
Claims (8)
1. counterflow-preventing blood taking needle, comprise blood-collecting needle tube (9), puncture needle (5), blood-collecting needle tube (9) is connected with puncture needle (5) by link, it is characterized in that: described link is the link being provided with resistant to blood backflow device.
2. counterflow-preventing blood taking needle as claimed in claim 1, is characterized in that: described resistant to blood backflow device be pressure reduction control only allow blood from blood-collecting needle tube (9) one end to puncture needle (5) one end the unidirectional check valve (8) passed through.
3. counterflow-preventing blood taking needle as claimed in claim 2, it is characterized in that: described check valve (8) comprises the first joint (81), second joint (82) and be assemblied between the first joint (81) and the second joint (82) only allow blood from blood-collecting needle tube (9) one end to puncture needle (5) one end the unidirectional diaphragm (83) passed through, the supporter (810) supporting described diaphragm (83) on the direction being pointed to blood-collecting needle tube (9) one end by puncture needle (5) one end is provided with in described first joint (81), described diaphragm (83) is provided with the weakening groove (830) of compression damage, the shape of supporter (810), position and the shape weakening groove (830), position is corresponding.
4. counterflow-preventing blood taking needle as claimed in claim 3, is characterized in that: described first joint (81) or the second joint (82) are provided with blood back observation structure.
5. the counterflow-preventing blood taking needle as described in claim 2,3 or 4, is characterized in that: the two ends of described check valve (8) are connected with blood-collecting needle tube (9), puncture needle (5) respectively by transparent connecting hose (7).
6. the counterflow-preventing blood taking needle as described in claim 1,2 or 3, is characterized in that: the visual window needle stand (6) of described puncture needle (5) being provided with observable blood back situation.
7. the counterflow-preventing blood taking needle as described in claim 1,2,3 or 4, is characterized in that: on the needle body of described puncture needle (5), cover has safe fluid stopping cover (4).
8. the counterflow-preventing blood taking needle as described in claim 1,2,3 or 4, is characterized in that: described puncture needle (5) is connected with collection container, and described collection container comprises stopper (2) and the safe helmet (3) of vessel (1) and closed container body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677434.0U CN204336933U (en) | 2014-11-14 | 2014-11-14 | Counterflow-preventing blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677434.0U CN204336933U (en) | 2014-11-14 | 2014-11-14 | Counterflow-preventing blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204336933U true CN204336933U (en) | 2015-05-20 |
Family
ID=53220244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420677434.0U Expired - Fee Related CN204336933U (en) | 2014-11-14 | 2014-11-14 | Counterflow-preventing blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204336933U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-11-14 CN CN201420677434.0U patent/CN204336933U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160628 Address after: 620564 Sichuan Chengdu Tianfu New Area Renshou High Economic Development Zone Hing Yuen Road Patentee after: SICHUAN SHUANGLU MEDICAL APPARATUS & INSTRUMENTS CO.,LTD. Address before: And 610212 in Sichuan province Chengdu City Renhe road high tech Zone of Sichuan Shuanglu medical apparatus Co. Patentee before: Lu Panzhong |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 |