CN209269714U - A kind of safety blood taking device - Google Patents
A kind of safety blood taking device Download PDFInfo
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- CN209269714U CN209269714U CN201820623884.XU CN201820623884U CN209269714U CN 209269714 U CN209269714 U CN 209269714U CN 201820623884 U CN201820623884 U CN 201820623884U CN 209269714 U CN209269714 U CN 209269714U
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- 239000008280 blood Substances 0.000 title claims abstract description 139
- 210000004369 blood Anatomy 0.000 title claims abstract description 139
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 52
- 239000010409 thin film Substances 0.000 claims description 45
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000011017 operating method Methods 0.000 abstract description 3
- 238000010241 blood sampling Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000001194 anti-hemostatic effect Effects 0.000 description 4
- 208000015181 infectious disease Diseases 0.000 description 4
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 3
- 229960002897 heparin Drugs 0.000 description 3
- 229920000669 heparin Polymers 0.000 description 3
- 101100008046 Caenorhabditis elegans cut-2 gene Proteins 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000002439 hemostatic effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The utility model discloses a kind of safety blood taking device comprising: blood collection needles acquire blood for being inserted into blood vessel；Vacuum blood collection tube, for collecting blood；One on-off connector, for being connected to the blood collection needles and the vacuum blood collection tube, wherein the on-off connector includes: one first connector, with interface, is connect with blood collection needles by hose, and access is formed；One second connector is connected to the first connector by interface channel；The interface channel is normally closed, and is connected to after second connector is squeezed by the vacuum blood collection tube.As such, it is desirable to when taking a blood sample, it is only necessary to vacuum blood collection tube are pressed against second connector, connection can be realized, blood was collected；Additional operating procedure is not needed, it is simple and convenient.
Description
Technical field
The utility model relates to blood collecting technology fields, and in particular to a kind of safety blood taking device.
Background technique
Existing blood-taking device generally comprises the connector of blood collection needles, the vacuum blood collection tube of independent packaging and centre,
When blood sampling, first by the intravascular of blood collection needles insertion patient, then connector is connected to vacuum blood collection tube, finally by connection
Connection/closure of blood channel realizes the control of on-off that blood circulates from from blood vessel to vacuum blood collection tube in part.
But this blood-taking device is when in use, operate it is comparatively laborious, need specially to the connection of blood channel/
Closure is controlled, once this allows for user when blood sampling, is forgotten closed procedure, is directly pulled out vacuum blood collection tube
Afterwards, it is easy to cause the consequence for blood infection/persistently bleed to patient.
In addition, vacuum blood collection tube is prefixed a certain amount of negative pressure in process of production, after pin puncture of taking a blood sample enters blood vessel,
Due to the suction function in heparin tube, blood is automatically flowed into heparin tube.
In blood collection procedure, after blood sampling to predetermined amount, if negative pressure disappears in vacuum blood collection tube, overpressure and vein pressure
Equal, vein pressure is greater than atmospheric pressure, separates blood taking needle and vacuum blood collection tube not in time before pulling out needle, leads to blood in blood taking needle silicone tube
Liquid reserves, if patient suffers from blood born diseases, easily haematogenous is caused to pollute.
Therefore, it is necessary to improve to blood-taking device itself.
In view of the above drawbacks, the utility model creator obtains originally practical new finally by prolonged research and practice
Type.
Utility model content
To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, provides a kind of safety blood taking device,
Comprising:
Blood collection needles acquire blood for being inserted into blood vessel；
Vacuum blood collection tube, for collecting blood；
One on-off connector, for being connected to the blood collection needles and the vacuum blood collection tube, wherein the on-off connector
Include:
One first connector is connect with blood collection needles by hose with interface, forms access；
One second connector is connected to the first connector by interface channel；
The interface channel is normally closed, and is connected to after second connector is squeezed by the vacuum blood collection tube.
Preferably, the on-off connector further include:
One thin-film member is arranged on the interface channel, carries out on-off control to the interface channel；
One cuts membrane, is internally provided with inner cavity, top and the thin-film member against；
The thin-film member can be movable relatively with the membrane of cutting.
Preferably, the thin-film member and the membrane rest position of cutting are diaphragm, setting is seamed in the middle part of the diaphragm
Gap.
Preferably, described cut is provided with fixed part in the middle part of membrane, the thin-film member further includes elastic portion, the elastic portion one
The fixed diaphragm in end, the other end and the fixed part against.
Preferably, the connector is provided with cylindrical groove, to cut membrane described in receiving, the internal diameter of the cylindrical groove is slightly larger than
The outer diameter for cutting membrane fixed part.
Preferably, the on-off connector further includes a fixing piece, it is connect with the connector, cuts film and institute for described
Thin-film member is stated to fix.
Preferably, second connector is the movable part for being provided with syringe needle, and the fixing piece internal run-through, the activity
Part is arranged inside the fixing piece, moves in the axial direction.
Preferably, the fixing piece is internally provided with blocking step, described movable part one end and the diaphragm against, in
Portion is against the blocking step.
Preferably, the on-off connector further includes a needle holder, it is connect with the fixing piece.
Preferably, the needle holder is cylindrical drum open at one end, the other end has internal screw thread；The syringe needle is interior from having
One end of screw thread is inserted into the needle holder.
Compared with the prior art the utility model has the beneficial effects that: a kind of safety blood taking device is provided, in this way, directly
By squeezing the second connector, it can the connection for realizing interface channel in on-off connector does not need additional operating procedure,
It is simple and convenient；In blood-taking device, the second connector in the on-off connector is squeezed with the vacuum blood collection tube in blood-taking device
Pressure connection, as such, it is desirable to when taking a blood sample, it is only necessary to vacuum blood collection tube is pressed against second connector, connection can be realized, into
Row blood sampling；After blood sampling, vacuum blood collection tube is taken away, then the squeezing action between vacuum blood collection tube and the second connector is natural
Also it disappears, at this point, the interface channel in on-off connector disconnects automatically, anti-Hemostatic Oral Liquid continues loss or reflux, keeps away
The possibility for blood infection/persistently bleed is exempted to cause to patient；It also avoids blood samples of patients to flow out from blood taking needle, causes blood
The problem of pollution.
Detailed description of the invention
It, below will be to institute in embodiment description in order to illustrate more clearly of the technical solution in various embodiments of the utility model
Attached drawing to be used is needed to be briefly described.
Fig. 1 is the section perspective view of the explosion of the utility model on-off connector；
Fig. 2 is the diagrammatic cross-section of the utility model thin-film member；
Fig. 3 is the diagrammatic cross-section that the utility model cuts membrane；
Fig. 4 is the diagrammatic cross-section of the utility model connector；
Fig. 5 is the diagrammatic cross-section of the utility model fixing piece；
Fig. 6 is the diagrammatic cross-section of the utility model movable part；
Fig. 7 is the diagrammatic cross-section of the utility model needle holder；
Fig. 8 is the diagrammatic cross-section of the utility model on-off connector.
Specific embodiment
Below in conjunction with attached drawing, the above and other technical features and advantages of the present invention are described in more detail.
Embodiment 1
As shown in Fig. 1 (in figure all draw), wherein the safety blood taking device includes:
Blood collection needles, for acquiring blood；
Vacuum blood collection tube, for collecting blood；
One on-off connector is for being connected to the blood collection needles and the vacuum blood collection tube, wherein the on-off connector
Include:
One first connector forms access for connecting with blood collection needles by hose with interface；
One second connector is connected to the first connector by interface channel；
Wherein, the connecting path is normally closed, and is connected to after second connector is squeezed by the vacuum blood collection tube.
In this way, directly by squeezing the second connector, it can the connection for realizing interface channel in on-off connector is not required to
Additional operating procedure is wanted, it is simple and convenient；In blood-taking device, by the second connector and blood-taking device in the on-off connector
In vacuum blood collection tube be press-connected, as such, it is desirable to when taking a blood sample, it is only necessary to by vacuum blood collection tube be pressed against it is described second connection
Connection can be realized in part, and blood was collected；After blood sampling, vacuum blood collection tube is taken away, then vacuum blood collection tube and the second connector
Between squeezing action naturally also disappear, at this point, the interface channel in on-off connector disconnects automatically, anti-Hemostatic Oral Liquid
Continue to be lost or flow back, avoids the possibility for causing blood infection/persistently bleed to patient；Blood samples of patients is also avoided from blood sampling
The problem of being flowed out at needle, blood caused to pollute.
As such, it is desirable to when taking a blood sample, it is only necessary to vacuum blood collection tube is pressed against second connector, connection can be realized,
Blood was collected；After blood sampling, vacuum blood collection tube is taken away, then the squeezing action between vacuum blood collection tube and the second connector from
So also disappear, at this point, the interface channel in on-off connector disconnects automatically, anti-Hemostatic Oral Liquid continues loss or reflux,
The possibility for causing blood infection/persistently bleed to patient is avoided, achievees the purpose that safety blood taking.
Embodiment 2
Safety blood taking device as described above, the present embodiment is different from place and is, as shown in Figure 1, the on-off
Connector further include:
One thin-film member 1 is arranged on the interface channel, carries out on-off control to the interface channel；
One cuts membrane 2, is internally provided with inner cavity 24, top and the thin-film member 1 against；
The thin-film member 1 can be movable relatively with the membrane 2 of cutting.
In this way, a part of the inner cavity 24 as the interface channel, in initial position, the thin-film member 1 is closed,
Disconnect the interface channel, 2 top of membrane of cutting is against the thin-film member 1；After second connector is squeezed,
The squeezing action is transferred to the thin-film member 1 and cuts membrane 2 with described, so that the thin-film member 1 and the membrane 2 of cutting mutually are transported
Dynamic, the top for cutting membrane 2 opens the thin-film member 1, then the inner cavity 24 for cutting membrane 2 is with the membrane 2 of cutting
Movement runs through the thin-film member 1, at this point, the interface channel is connected；It disappears in the active force that is extruded of second connector
Afterwards, the thin-film member 1 sets back with the membrane 2 of cutting under the action of restoring force, and the interface channel disconnects.
Wherein, the top can be tip, so that more convenient cut open the thin-film member 1.
As shown in connection with fig. 2, wherein the thin-film member 1 is diaphragm 11 with 2 rest position of membrane of cutting, with bullet
Property, it is scalable；In this way, the thickness very little of the diaphragm 11, allows and described cut diaphragm easily for the diaphragm
11 cut open, and achieve the purpose that communication passage；Elasticity is good for it, can restore good working condition in described cut after diaphragm leaves, reach disconnected
The purpose of open walk.
In addition, the thickness of diaphragm 11 is small, so that the diaphragm 11 is under the active force of very little, so that it may realize channel
Disconnection and conducting so that operation when opening and closing be easier, the active force needed is smaller；In this case, very little can be passed through
Active force realizes opening and closing, so that it is smaller to the active force demand for restoring to cut membrane 2 and thin-film member 1 in whole device, do not need volume
The return units such as outer addition spring reset to realize.
Wherein, it is arranged in the middle part of the diaphragm 11 and has the gap, thus to the position cut membrane 2 and open the thin-film member 1
It sets and guides, reduce the active force and restore the active force needed for needing to open/cut open that the thin-film member 1 needs.
Wherein, the diaphragm 11 thickeies at gap；In this way, deformation when can be abutted against to the diaphragm 11
It guides, and deformation restores simple, to even caused by preventing the random deformation because of diaphragm 11 or deformation can not being restored
Connect being unable to control for the on-off in road.
Wherein, the thin-film member 1 further includes elastic portion 12, the fixed diaphragm 11 in described 12 one end of elastic portion, described
Elastic portion 12 is corrugated elastic component, for restoring the thin-film member 1 and the relative position for cutting membrane 2.
As shown in connection with fig. 3, wherein described cut is provided with fixed part 21 in the middle part of membrane 2, the elastic portion 12 with it is described solid
Determine portion 21 against, the thin-film member 1 and it is described cut 2 relative motion of membrane after, the elastic portion 12 is compressed；Connect described second
Fitting is extruded after active force disappears, and the elastic portion 12 of compression stretches release, so that described cut membrane 2 and the thin-film member 1
It sets back.
Wherein, first annular groove 22 is provided on the fixed part 21, the elastic portion 12 is inserted into the annular groove
In, keep the thin-film member 1 and the combination for cutting membrane 2 firm.
Preferably, the fixed part 21 is tightly connected with the elastic portion 12, Hemostatic Oral Liquid anti-in this way and contacting external air.
Wherein, 2 both ends of membrane of cutting are provided with port 23, and the port 23 is connected to the inner cavity 24 respectively；This
Sample, described to cut after membrane 2 opens the thin-film member 1, the port 23 for cutting 2 both ends of membrane is located at the thin-film member 1
Both ends achieve the effect that the interface channel conducting so that the inner cavity 24 penetrates through the thin-film member 1.
Preferably, be arranged in the port 23 for cutting 2 top of membrane opening direction and the axis for cutting membrane 2 hang down
Directly, in this way, making the circulation passage of blood perpendicular to the gap on diaphragm 11, anti-Hemostatic Oral Liquid is straight after flowing out from the inner cavity 24
Calking gap (if flinging gap, the purpose for being closed completely the interface channel can be not achieved from the gap internal leakage in blood),
Cause the consequence of blood leakage.
Embodiment 3
Safety blood taking device as described above, the present embodiment are different from place and are, as shown in connection with fig. 4, described the
A connection piece is connector 3, is provided with interface, for connecting with blood taking needle hose, forms the access of blood-transmitted.
Wherein, the connector 3 is provided with cylindrical groove 31, for being combined with the membrane 2 of cutting.
Wherein, the internal diameter of the cylindrical groove 31 is slightly larger than the outer diameter for cutting 2 fixed part 21 of membrane, in this way convenient for receiving institute
State fixed part 21；And convenient for the fixed part 21 for cutting membrane 2 is sticked in the cylindrical groove 31.
Wherein, the diameter of the diaphragm 11 is greater than the outer diameter for cutting 2 fixed part 21 of membrane, in this way, the cylindrical groove
31 can stop the diaphragm 11, prevent the diaphragm 11 from entering the cylindrical groove 31, thus to the diaphragm 11
Movement is limited.
Embodiment 4
Safety blood taking device as described above, the present embodiment are different from place and are, as shown in connection with fig. 5, described logical
Disconnection fitting further includes a fixing piece 4, is connect with the connector 3, cuts membrane 2 and the fixation of the thin-film member 1 for described.This
Sample, fixing piece 4 and connector 3 will cut membrane 2 and thin-film member 1 is contained in inside, limit and described cut membrane 2 and the thin-film member
1 can only move along its axis direction；At this point, fixing piece 4 and the thin-film member 1 against.
Wherein, the fixing piece 4 is tightly connected with the connector 3, and the inside and outside isolation of fixing piece 4 and connector 3 prevents
It cuts membrane 2 and contacts with thin-film member 1 and corresponding interface channel with the external world, and blood is caused to pollute.
Wherein, one end that the fixing piece 4 is contacted with the connector 3, is provided with second annular groove 41, in this way, just
It is connect in the connector 3, reaches sealing state.
Wherein, one end that the connector 3 is contacted with the fixing piece 4 is provided with the second annular protrusion 32, and described
Second annular groove 41 is corresponding, so as to combine closely.
On this basis, the second annular groove 41 and second annular protrusion 32 are engaged, and pass through glue bond,
It can reach the effect of sealing.
Embodiment 5
Safety blood taking device as described above, the present embodiment are different from place and are, as shown in connection with fig. 6, described the
Two connectors are the movable part 5 for being provided with syringe needle, in this way, as vacuum blood collection tube squeezes the movable part 5, the movable part 5
On syringe needle can be inserted into the vacuum blood collection tube, achieve the purpose that connect with vacuum blood collection tube.
Wherein, 4 internal run-through of fixing piece, the movable part 5 are arranged inside the fixing piece 4, move in the axial direction；
In this way, the movable part 5 is transported along the axis direction of the fixing piece 4 when the vacuum blood collection tube squeezes the movable part 5
It is dynamic, squeeze the diaphragm 11 contacted with the fixing piece 4.
Wherein, described 5 one end of movable part and the diaphragm 11 in the movable part 5 movement against in this way, compress
The diaphragm 11.
Wherein, the fixing piece 4, which is internally provided with, stops step 43, limits the movement of the movable part 5, prevents
The movable part 5 is skidded off from the fixing piece 4；In this way, by the diaphragm 11 and the blocking step 43 to movable part 5
Movement in two directions is limited.
One end of the movable part 5 is provided with syringe needle, the other end and diaphragm 11 against；In this way, the vacuum blood collection tube
When Compressive activities part 5, the movable part 5 is mobile, compresses the diaphragm 11；After the diaphragm 11 compression, the activity
5 stop motion of part, the syringe needle are inserted into the vacuum blood collection tube with the extruding of vacuum blood collection tube.
Embodiment 6
Safety blood taking device as described above, the present embodiment are different from place and are, also set on the movable part 5
It is equipped with a protective sleeve of syringe needle 7, the syringe needle is protected, prevents syringe needle from hurting sb.'s feelings or being damaged by external force.
Embodiment 7
Safety blood taking device as described above, the present embodiment is different from place and is, in conjunction with shown in Fig. 7, Fig. 8, institute
Stating on-off connector further includes a needle holder 6, is connect with the fixing piece 4.In this way, convenient for hold, and can to fixation
The movable part 5 and syringe needle that part 4 connects are protected, and prevent that syringe needle from hurting sb.'s feelings or syringe needle is damaged by external force.
The other end (one end not connecting with connector 3) of the fixing piece 4 is provided with external screw thread, and the needle holder 6 is set
It is equipped with internal screw thread, so that the fixing piece 4 is connected through a screw thread with the needle holder 6, stable connection and easy to disassemble.
The needle holder 6 is fixedly connected with the fixing piece 4, can be connected by holding needle holder 6 to move the on-off
Fitting.
The needle holder 6 is cylindrical drum open at one end, and the other end has internal screw thread；In this way, the fixing piece 4 with it is described
After needle holder 6 connects, the syringe needle is inserted into the needle holder 6 from closed one end, achievees the purpose that protection and convenient for gripping；And
Vacuum blood collection tube can be inserted into needle holder 6 from one end of opening, so that vacuum blood collection tube is connect with syringe needle, syringe needle insertion is true
In empty heparin tube；In this way, the insertion connection of vacuum blood collection tube and syringe needle can be realized and extract connection convenient for holding needle holder 6,
It is easy to use.
Embodiment 8 is set, and the present embodiment is that the use process in blood-taking device is arranged in above-mentioned on-off connector to retouch
It states, wherein when connection, connector 3 is connect with blood taking needle；When needing to take a blood sample, blood taking needle is inserted into it is intravascular, by vacuum blood collection tube
It is inserted into needle holder 6, and starts to exert oneself；Vacuum blood collection tube oppresses syringe needle, and oppresses movable part 5 in turn, so that movable part 5 is to thin
Diaphragm
It is mobile that safety blood taking as described above fills 11 directions；After diaphragm 11 is applied, moved；1 quilt of thin-film member
Compression, cuts membrane 2 at this time and is kept fixed, then cut 2 top of membrane and withstand diaphragm 11；Due to the effect of power, diaphragm 11 can be sent out
Raw deformation, intermediate gap are cut membrane 2 and are strutted, and after the thin-film member 1 is compressed to certain position, cut the port of membrane 2 at this time
23 have passed through diaphragm 11, so that interface channel is connected；At this point, syringe needle is with thin since vacuum blood collection tube oppresses syringe needle
The compression of membrane 1, reaction force are increasing；Until syringe needle is initially inserted into vacuum blood collection tube；In this way, making interface channel
Conducting and syringe needle insertion vacuum blood collection tube occur simultaneously；It is simple and convenient.At this point, the firmly state of vacuum blood collection tube is kept, so that
Blood can be flowed into smoothly.
After blood sampling, vacuum blood collection tube is pulled out outward, at this point, driving syringe needle movement；Simultaneously as the compression of thin-film member 1,
Restoring force is generated to progressively disengage so that diaphragm 11 is moved to opposite direction and cut membrane 2, the deformation of diaphragm 11 also fades away,
Interface channel disconnects；Blood stops flow into vacuum blood collection tube.
Certainly, after vacuum blood collection tube insertion needle, the firmly state of vacuum blood collection tube can also be stopped, at this point, due to thin
The restoring force that the compression of membrane 1 generates achievees the purpose that disconnect channel so that diaphragm 11 is moved to opposite direction.
Wherein, if the material of syringe needle and vacuum blood collection tube influences, it is also possible to the vacuum blood collection tube and squeezes the syringe needle
Afterwards, the syringe needle is inserted directly into the vacuum blood collection tube；Then, continue to exert oneself with vacuum blood collection tube, so that movable part 5 is opened
Begin to move, achievees the purpose that penetrate through interface channel.
Wherein, the diameter of the diaphragm 11 can be no more than the outer diameter for cutting 2 fixed part 21 of membrane, thus described
When thin-film member 1 is compressed, the diaphragm 11 enters in the cylindrical groove 31 with compression, reaches better compression effectiveness.
Wherein, the diaphragm 11 and the movable part 5 against when, connection relationship can be set to, in this way, film
Piece 11 can be moved with the movement of movable part 5, more convenient to the control of interface channel.
Embodiment 9
Safety blood taking device as described above, the present embodiment is different from place and is, to realize by other means
On-off connector, setting is by on-off system (a such as micro valve) such as on interface channel, by the trigger point of the device
It is arranged on needle holder 6 or on movable part 5 (the second connector), in this way, after the vacuum blood collection tube squeezes the second connector,
The trigger point can be triggered, achievees the purpose that control interface channel on-off.
The trigger point can be mechanical triggering, be also possible to reach triggering effect by the way that microswitch is arranged.
The above is only the preferred embodiment of the present invention, is merely illustrative for the utility model, and
It is unrestricted.Those skilled in the art understand that can be to it in the spirit and scope defined by the utility model claims
Many changes, modifications, and even equivalents are carried out, but all will fall within the protection scope of the utility model.
Claims (8)
1. a kind of safety blood taking device characterized by comprising
Blood collection needles acquire blood for being inserted into blood vessel；
Vacuum blood collection tube, for collecting blood；
One on-off connector, for being connected to the blood collection needles and the vacuum blood collection tube, wherein the on-off connector packet
It includes:
One first connector, first connector are that connector is connect with blood collection needles by hose, shape with interface
At access；
One second connector is connected to the first connector by interface channel；
The interface channel is normally closed, and is connected to after second connector is squeezed by the vacuum blood collection tube；
One thin-film member is arranged on the interface channel, carries out on-off control to the interface channel；
One cuts membrane, is internally provided with inner cavity, top and the thin-film member against；
The thin-film member can be movable relatively with the membrane of cutting；
The on-off connector further includes a fixing piece, is connect with the connector, cuts membrane and the thin-film member for described
It is fixed.
2. safety blood taking device as described in claim 1, which is characterized in that the thin-film member cuts membrane rest position with described
For diaphragm, diaphragm middle part setting is had the gap.
3. safety blood taking device as claimed in claim 2, which is characterized in that described cut is provided with fixed part in the middle part of membrane, institute
Stating thin-film member further includes elastic portion, the fixed diaphragm in described elastic portion one end, the other end and the fixed part against.
4. safety blood taking device as claimed in claim 3, which is characterized in that the connector is provided with cylindrical groove, to accommodate
Described to cut membrane, the internal diameter of the cylindrical groove is slightly larger than the outer diameter for cutting membrane fixed part.
5. safety blood taking device as claimed in claim 4, which is characterized in that second connector is the work for being provided with syringe needle
Moving part, the fixing piece internal run-through, the movable part are arranged inside the fixing piece, move in the axial direction.
6. safety blood taking device as claimed in claim 5, which is characterized in that the fixing piece is internally provided with blocking step,
Described movable part one end and the diaphragm are against middle part is against the blocking step.
7. the safety blood taking device as described in claim 4 or 5 or 6, which is characterized in that the on-off connector further includes holding
Needle device is connect with the fixing piece.
8. safety blood taking device as claimed in claim 7, which is characterized in that the needle holder is cylindrical drum open at one end,
The other end has internal screw thread；The syringe needle is inserted into the needle holder from tool internal thread one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623884.XU CN209269714U (en) | 2018-04-28 | 2018-04-28 | A kind of safety blood taking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820623884.XU CN209269714U (en) | 2018-04-28 | 2018-04-28 | A kind of safety blood taking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209269714U true CN209269714U (en) | 2019-08-20 |
Family
ID=67597488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820623884.XU Active CN209269714U (en) | 2018-04-28 | 2018-04-28 | A kind of safety blood taking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209269714U (en) |
Cited By (1)
| 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 |
-
2018
- 2018-04-28 CN CN201820623884.XU patent/CN209269714U/en active Active
Cited By (1)
| 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 |
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