CN206924076U - A kind of safe counterflow-preventing blood taking needle of double-vane - Google Patents
A kind of safe counterflow-preventing blood taking needle of double-vane Download PDFInfo
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- CN206924076U CN206924076U CN201720056677.6U CN201720056677U CN206924076U CN 206924076 U CN206924076 U CN 206924076U CN 201720056677 U CN201720056677 U CN 201720056677U CN 206924076 U CN206924076 U CN 206924076U
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- counterflow
- blood taking
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Abstract
It the utility model is related to a kind of safe counterflow-preventing blood taking needle of double-vane, it includes venipuncture needle assemblies and the plug puncture needle component being connected with each other, venipuncture needle assemblies include the first needle handle for being fixedly installed venipuncture needle, the symmetrical two pin wings being fixedly installed on the first needle handle and the protecting crust being set in outside the first needle handle, protecting crust is hollow tubular structure, its both sides is provided with axially extending groove, the two pin wings are stretched out by groove, groove rear end sets the restricted needle handle and the spacing latch of pin flapwise front slide, backflow preventing structure is provided with venipuncture needle assemblies or plug puncture needle component.Protecting crust provided by the utility model is rational in infrastructure, stability is good, it can effectively make needle handle and the fixation of the pin wing of vein blood taking needle stuck, security reliability is higher, due to being provided with backflow preventing structure in venipuncture needle assemblies or plug puncture needle component, the favorite outer generation backflow phenomena of blood collection procedure is avoided.
Description
Technical field
The disposable blood taking needle in medical apparatus is the utility model is related to, specially a kind of safe counterflow-preventing blood sampling of double-vane
Pin.
Background technology
Blood taking needle, which is mainly used in clinically medical personnel, takes a blood sample for patient and is used for doing various laboratory examinations, and workload is non-
Chang great, wound is easily needled in operation or transportation, and blood is remained in the blood taking needle after taking a blood sample, just had in blood
Potential danger of the viral communication to medical worker, the health of medical worker is caused greatly to threaten.In addition, using blood sampling
When pin carries out blood collection, the pressure roughly equal moment of pressure and blood vessel in vacuum blood collection tube, which terminates, takes a blood sample, hereafter,
The puncture needle that blood taking needle is connected with vacuum blood collection tube is extracted, and takes off tourniquet.But if tourniquet is first taken off, due to intravascular
Pressure drastically reduces, Gu the blood in heparin tube may produce adverse current.In addition, in the position of the heparin tube situation higher than blood vessel
Under, it is also possible to because potential energy produces adverse current.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of safe counterflow-preventing blood taking needle of double-vane.
To solve the above problems, technical solution adopted in the utility model is：
A kind of safe counterflow-preventing blood taking needle of double-vane, its key technology are：It includes venipuncture needle assemblies, plug punctures
Needle assemblies and the connecting tube of connection venipuncture needle assemblies and plug puncture needle component, the venipuncture needle assemblies include solid
Surely the two pin wings that be provided with the first needle handle of venipuncture needle, are symmetrically fixedly installed on first needle handle and it is set in institute
The protecting crust outside the first needle handle is stated, the protecting crust is hollow tubular structure, and its both sides is provided with axially extending groove, two institutes
The pin wing to be stated to be stretched out by the groove, the groove rear end sets the restricted needle handle and the spacing latch of pin flapwise front slide,
Backflow preventing structure is provided with the venipuncture needle assemblies or plug puncture needle component.
Further, the protecting crust includes the first housing and the second housing, is formed between the first housing and the second housing
Described groove, the spacing latch are arranged at the second housing rear end both sides, are provided with the middle part of first housing rear end
Spacing snap fit, the limit card slot being adapted with spacing snap fit is provided with first needle handle.
Further, the groove front end is provided with the anti-skid bulge for preventing that first needle handle and the pin wing from arbitrarily sliding.
Further, connecting plate is fixedly installed on first needle handle, the two pin wings are respectively fixedly disposed at described
Connecting plate both sides, the first needle handle left and right sides are provided with chute, and the chute is adapted with the groove.
Further, first housing rear end is provided with the first fixed disk, and second housing rear end is fixedly installed
Second fixed disk, the first housing and the second housing forward end are connected by thin-walled, by being arranged on the first fixed disk and after doubling
Connector on two fixed disks is fastened and connected, and first fixed disk and the second fixed disk form and be easy to hand-held disk body.
Further, it is provided with anti-sliding rib on first fixed disk and the second fixed disk.
Further, the plug puncture needle component includes being connected with the connecting tube needle stand, it is connected with the needle stand
The second needle handle, the plug puncture needle being fixedly installed on the second needle handle and the rubber that is arranged on outside the plug puncture needle prevent
Sheath, reverse flow prevention section is provided with the needle stand.
Further, the reverse flow prevention section is open at one end, the other end in the cylindrical body of " one " font flush configuration, institute
State and " one " font gap is offered on " one " font flush configuration, " one " the font flush configuration is located at second needle handle
Side, and certain gap is left, the opening end of the reverse flow prevention section is connected with the needle stand inner wall sealing.
It is using beneficial effect caused by above-mentioned technical proposal：
The utility model knot sets protecting crust in venipuncture needle component external, makes tendon and vessel puncture needle after use,
Pulled, be recovered in the protecting crust by two pin wings, limited needle handle and the pin wing by the effect of corresponding spacing latch
System, it is impossible to release again, make vein blood taking needle be retracted into protecting crust, avoid secondary use, also avoid exposed needle pricks
Medical personnel, cause to infect.Protecting crust provided by the utility model is rational in infrastructure, and stability is good, can effectively make vein
Needle handle and the pin wing fixation of blood taking needle are stuck, and security reliability is higher.Further, since worn in venipuncture needle assemblies or plug
Backflow preventing structure is provided with lancet unit, makes blood taking needle while there is counterflow-preventing and effect, avoid blood collection mistake
Backflow phenomena occurs outside Cheng Zhongyi.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of venipuncture needle assemblies.
Fig. 3 is the structural representation at another visual angle of the utility model.
Fig. 4 is the structural representation of the first housing.
Fig. 5 is the structural representation of the second housing.
Fig. 6 is the structural representation of the pin wing.
Fig. 7 is the schematic diagram of plug puncture needle backflow preventing structure.
Wherein：1 venipuncture needle, 2 first needle handles, 2-1 limit card slots, the 3 pin wings, 4 protecting crusts, the housings of 4-1 first, 4-2
First fixed disk, 4-3 anti-skid bulges, the housings of 4-4 second, the spacing latches of 4-5, the fixed disks of 4-6 second, 4-7 fix grab, 4-8
Limit hook, 4-9 fixed card slots, 5 connecting tubes, 6 needle stands, 7 second needle handles, 8 elastometric boots, 9 protecting tubes, 10 connecting plates, 11
Chute, 12 plug puncture needles, 13 reverse flow prevention section, 14 grooves.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings and specific embodiment
Clear, complete description is carried out to utility model.
The safe counterflow-preventing blood taking needle of a kind of double-vane as shown in figures 1 and 3, it includes venipuncture needle assemblies, plug is worn
Lancet unit and the connecting tube 5 of connection venipuncture needle assemblies and plug puncture needle component, the connecting tube 5 using straight tube or
Person's flexible pipe.
As shown in Fig. 2 the venipuncture needle assemblies include being fixedly installed the first needle handle 2 of venipuncture needle 1, symmetrical
The two pin wings 3 being fixedly installed on first needle handle 2 and the protecting crust 4 being set in outside first needle handle 2, described first
Needle handle 2, the pin wing 3 and protecting crust 4 are plastic material.Protecting tube 9 is provided with outside the venipuncture needle 1, in use, need to first by
Protecting tube 9 is pulled up.
The protecting crust 4 is hollow tubular structure, and the first needle handle 2 can be provided with its internal slide, the both sides of protecting crust 4
Axially extending groove 14,14 elongated rectangular shapes of groove, its front and back end are closed, and are placed and are slipped.The two pin wings 3 are by described logical
Groove 14 stretches out, and the rear end of groove 14 sets the spacing latch 4-5 of the restricted needle handle 2 and the forward slip of the pin wing 3, the limit
The position rectangular triangles of latch 4-5, its hypotenuse are located at front side, and straight flange is located at rear side, can both by the pulling function of the pin wing 3
By spacing latch 4-5 hypotenuse by the first needle handle 2 by being preceding pushed into spacing latch 4-5 rear side, but in spacing latch 4-5
Straight flange barrier effect under, the pin wing 3, which is limited, to be released forward again, and now, vein blood taking needle 1 is received to protecting crust
In, secondary use is avoided, also avoids needle pricks people.Therefore, described groove 14 is unidirectional irreversible slide construction.
As shown in Figure 4, Figure 5 and Figure 6, the protecting crust 4 includes the first housing 4-1 and the second housing 4-4, the first housing 4-
1 and second forms described groove 14 between housing 4-4, and the spacing latch 4-5 is arranged at the second housing 4-4 rear ends two
Side, the first housing 4-1 rear ends middle part are provided with spacing snap fit 4-8, are provided with first needle handle 2 and spacing snap fit 4-
The 8 limit card slot 2-1 being adapted.Because protecting crust is plastic construction, there is certain elasticity, the pin wing and the second needle handle are also easy
Depart from the restriction effect of spacing latch, but because the spacing latch 4-5 and spacing snap fit 4-8 are separately positioned on the first housing
On 4-1 and the second housing 4-4, two-way position limiting structure, it ensure that the first needle handle 2 and the pin wing 3 can not be pushed out again, structure is steady
It is qualitative good.
The first housing 4-1 rear ends are provided with the first fixed disk 4-2, and the second housing 4-4 rear ends are fixedly installed
Second fixed disk 4-6, the first housing 4-1 and the second housing 4-4 front ends are connected by thin-walled, solid by being arranged on first after doubling
Connector on price fixing 4-3 and the second fixed disk 4-6 is fastened and connected, specifically, being set at left and right sides of the first fixed disk 4-2
Fixed snap fit 4-7 is equipped with, the fixed card slot 4- being adapted with the fixed snap fit 4-7 is provided with the second fixed disk 4-6
9。
The first fixed disk 4-2 and the second fixed disk 4-6 is formed and is easy to hand-held disk body.The front end of groove 14 is set
There is the anti-skid bulge 4-3 for preventing that first needle handle 2 and the pin wing 3 from arbitrarily sliding, specifically, in the first housing 4-1 and second shell
The anti-skid bulge 4-3 of circular arc is respectively provided with body 4, avoid the pin wing 3 positioned at front end slide into easily behind it is locked, formed useless
Product.Anti- sliding rib is provided with the first fixed disk 4-2 and the second fixed disk 4-6, use is easy to operate.
Connecting plate 10 is fixedly installed on first needle handle 2, the two pin wings 3 are respectively fixedly disposed at the connecting plate
10 both sides, the left and right sides of the first needle handle 2 are provided with chute 11, and the chute 11 is adapted with the groove 14.The chute 11
Two inclines of the first housing 4-1 are buckled in along upper, makes device fitness high, slides smooth.
As shown in fig. 7, it is provided with backflow preventing structure in the venipuncture needle assemblies or plug puncture needle component.The glue
Plug puncture needle component includes the needle stand 6 being connected with the connecting tube 5, the second needle handle 7 being connected with the needle stand 6, fixed setting
Plug puncture needle 12 on the second needle handle 7 and the elastometric boot 8 being arranged on outside the plug puncture needle 12, the needle stand
Reverse flow prevention section 13 is provided with 6.The reverse flow prevention section 13 is open at one end, the other end is in the cylinder of " one " font flush configuration
Shape body, offers " one " font gap on " one " the font flush configuration, and " one " the font flush configuration is positioned at described the
The side of two needle handles 7, and certain gap is left, the opening end of the reverse flow prevention section 13 and the inner wall sealing of needle stand 6
Connection.Blood is flowed into needle stand 6 from connecting tube 5, and the opening end by reverse flow prevention section 13 enters, and is flowed by " one " font gap
Go out and enter in plug puncture needle 12.But in the event of backflow phenomena, the blood in plug puncture needle 12 can not pass through
" one " font gap is entered in reverse flow prevention section 13, therefore plays counterflow-preventing effect.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still be modified to the technical scheme described in previous embodiment, or which part technical characteristic is equal
Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment technical scheme
Spirit and scope.
Claims (8)
- A kind of 1. safe counterflow-preventing blood taking needle of double-vane, it is characterised in that：It includes venipuncture needle assemblies, plug puncture needle component And the connecting tube of connection venipuncture needle assemblies and plug puncture needle component（5）, the venipuncture needle assemblies are including fixing It is provided with venipuncture needle（1）The first needle handle（2）, be symmetrically fixedly installed on first needle handle（2）On the two pin wings（3）With And it is set in first needle handle（2）Outer protecting crust（4）, the protecting crust（4）For hollow tubular structure, its both sides is provided with Axially extending groove（14）, the two pin wings（3）By the groove（14）Stretch out, the groove（14）Rear end sets restricted The needle handle（2）With the pin wing（3）The spacing latch of forward slip（4-5）, venipuncture needle assemblies or plug the puncture needle group Backflow preventing structure is provided with part.
- A kind of 2. safe counterflow-preventing blood taking needle of double-vane according to claim 1, it is characterised in that：The protecting crust（4）Bag Include the first housing（4-1）With the second housing（4-4）, the first housing（4-1）With the second housing（4-4）Between form described groove （14）, the spacing latch（4-5）It is arranged at second housing（4-4）Rear end both sides, first housing（4-1）In rear end Portion is provided with spacing snap fit（4-8）, first needle handle（2）On be provided with and spacing snap fit（4-8）The limit card slot being adapted （2-1）.
- A kind of 3. safe counterflow-preventing blood taking needle of double-vane according to claim 1, it is characterised in that：The groove（14）Front end Being provided with prevents first needle handle（2）With the pin wing（3）The anti-skid bulge arbitrarily slided（4-3）.
- A kind of 4. safe counterflow-preventing blood taking needle of double-vane according to claim 1, it is characterised in that：First needle handle（2） On be fixedly installed connecting plate（10）, the two pin wings（3）It is respectively fixedly disposed at the connecting plate（10）Both sides, the first needle handle （2）The left and right sides is provided with chute（11）, the chute（11）With the groove（14）It is adapted.
- A kind of 5. safe counterflow-preventing blood taking needle of double-vane according to claim 2, it is characterised in that：First housing（4- 1）Rear end is provided with the first fixed disk（4-2）, second housing（4-4）Rear end is fixedly installed the second fixed disk（4-6）, the One housing（4-1）With the second housing（4-4）Front end is connected by thin-walled, by being arranged on the first fixed disk after doubling（4-2）With Second fixed disk（4-6）On connector be fastened and connected, first fixed disk（4-2）With the second fixed disk（4-6）Formed just In hand-held disk body.
- A kind of 6. safe counterflow-preventing blood taking needle of double-vane according to claim 5, it is characterised in that：First fixed disk （4-2）With the second fixed disk（4-6）On be provided with anti-sliding rib.
- A kind of 7. safe counterflow-preventing blood taking needle of double-vane according to claim any one of 1-6, it is characterised in that：The plug Puncture needle component includes and the connecting tube（5）The needle stand of connection（6）And the needle stand（6）Second needle handle of connection（7）, it is solid Surely it is arranged on the second needle handle（7）On plug puncture needle（12）And it is arranged on the plug puncture needle（12）Outer preventing rubber Set（8）, the needle stand（6）Inside it is provided with reverse flow prevention section（13）.
- A kind of 8. safe counterflow-preventing blood taking needle of double-vane according to claim 7, it is characterised in that：The reverse flow prevention section （13）It is in the cylindrical body of " one " font flush configuration for open at one end, the other end, is offered on " one " the font flush configuration " one " font gap, " one " the font flush configuration are located at second needle handle（7）Side, and leave it is certain between Gap, the reverse flow prevention section（13）Opening end and the needle stand（6）Inner wall sealing connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720056677.6U CN206924076U (en) | 2017-01-18 | 2017-01-18 | A kind of safe counterflow-preventing blood taking needle of double-vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720056677.6U CN206924076U (en) | 2017-01-18 | 2017-01-18 | A kind of safe counterflow-preventing blood taking needle of double-vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206924076U true CN206924076U (en) | 2018-01-26 |
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ID=61349414
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720056677.6U Active CN206924076U (en) | 2017-01-18 | 2017-01-18 | A kind of safe counterflow-preventing blood taking needle of double-vane |
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| CN (1) | CN206924076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100762A (en) * | 2021-04-06 | 2021-07-13 | 首都医科大学宣武医院 | Safe venous blood taking needle capable of preventing blood from splashing and convenient to fix |
-
2017
- 2017-01-18 CN CN201720056677.6U patent/CN206924076U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100762A (en) * | 2021-04-06 | 2021-07-13 | 首都医科大学宣武医院 | Safe venous blood taking needle capable of preventing blood from splashing and convenient to fix |
| CN113100762B (en) * | 2021-04-06 | 2022-12-27 | 首都医科大学宣武医院 | Safe venous blood taking needle capable of preventing blood from splashing and convenient to fix |
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