CN208958143U - A kind of visual blood taking needle - Google Patents
A kind of visual blood taking needle Download PDFInfo
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- CN208958143U CN208958143U CN201820636667.4U CN201820636667U CN208958143U CN 208958143 U CN208958143 U CN 208958143U CN 201820636667 U CN201820636667 U CN 201820636667U CN 208958143 U CN208958143 U CN 208958143U
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- blood
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- filter core
- stainless steel
- filled chamber
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Abstract
The utility model relates to a kind of visual blood taking needle, the blood back room for solving the visual blood taking needle of the prior art is big, the indefinite speed of waiting a moment of instruction process, waste blood, blood sampling sample accuracy are low technical problem.The utility model provides a kind of visual blood taking needle, is equipped with transparent needle stand and a both ends all have the stainless steel needle tubing of needle point, blood back room is equipped with blood return tube and lower end blood back room, and blood return tube and lower end blood back room surround inverted " t " type；Fixed seal connection is distinguished at the both ends of stainless steel needle tubing and needle stand, and gap is equipped between stainless steel needle tubing and blood return tube；Through blood back hole is equipped on stainless steel needle tubing in blood return tube, blood back hole is connected with blood return tube；Through venthole is equipped on the side wall of filled chamber, venthole is connected with the external world；Filter core is additionally provided in filled chamber, filter core is filled in inside filled chamber, and ventable when filter core is using drying, chance liquid expands closed material and is made.The utility model is widely used in medical instruments field.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of visual blood taking needle.
Background technique
The blood taking needle effect of visible blood-back is that operator can judge whether puncture vessel blood sampling succeeds with intuitive way,
The fuzzy subjective judgement for relying on feeling in original blood sampling operation is avoided, working efficiency and blood sampling success rate is effectively increased, subtracts
The pain of few patient.But existing visible blood-back blood taking needle still has drawback: after the better simply product of part-structure punctures
The process that blood back is seen to be indicated is not clear enough, quick, hampers the raising of blood sampling working efficiency.Want clearly to observe
To blood back, need to observe the sufficiently large of chamber setting, reducing influences caused by the variation of pressure, results in the body of needle stand in this way
Product is far longer than the needle stand volume of common blood taking needle.But while the observation chamber of visible blood-back blood taking needle increases at present, can also
The concussion rotational steps for bringing adopted blood to observe chamber increase, thus cause red blood cell considerable damage cause haemolysis or blood coagulation because
Final blood test results are brought error by sub- activity decline.
Currently, the vein blood taking needle of visible blood-back, blood back room is larger, although observation is convenient, this blood taking needle is being adopted
After the completion of blood, since the vein pressure of patient has compressed the air of blood taking needle blood back room, cause when extracting blood taking needle from venous blood,
Compressed air rebound makes remaining blood in needle tubing flow out generation weeping from needle point.The blood of outflow is easily led
Cause the cross-infection in hospital.Further, since the cavity of blood back room consumes the vacuum degree of vacuum blood collection tube inner part, first true
The blood sampling volume of empty heparin tube can be obvious insufficient, and blood sampling volume is insufficient, influences the accuracy of partial detection.Blood collection procedure is in principle
Blood is to flow into heparin tube by needle tubing, but current blood back pin inner chamber is bigger, and blood is to enter cavity to adopt through convolution inflow
Blood vessel has quantitative blood to leave and intracavitary causes blood loss after blood sampling.Currently, blood taking needle is too small when blood back building volume
When, blood flow situation cannot be obviously observed, visual effect is not had.So it is small and visual to be badly in need of a kind of blood back room at present
The apparent blood back needle of effect.
Summary of the invention
The purpose of this utility model is exactly in order to overcome the above-mentioned deficiencies of the prior art, according to capillary theory, to provide one
Kind composed structure is simple, scientific in principle is reasonable, blood back room is small, it is clearly fast to acquire process that blood volume is substantially reduced and instruction
The visual blood taking needle that speed, blood sampling sample accuracy significantly improve.
The utility model technical scheme applied to solve the technical problem is:
A kind of visual blood taking needle, is equipped with transparent needle stand and a both ends all have the stainless steel needle tubing of needle point, needle stand
Equipped with cutting tip needle stand and butt end needle stand, hollow blood back room is equipped with inside cutting tip needle stand, blood back room top is equipped with blood back
Pipe, blood back room lower part are equipped with lower end blood back room, and blood return tube and lower end blood back room surround inverted " t " type；Cutting tip needle stand and docking
Hollow filled chamber is formed after the needle stand assembly and connection of end, filled chamber is connected with lower end blood back room；Stainless steel needle tubing upper end is successively
Across filled chamber, lower end blood back room, blood return tube and the formation cutting tip needle tubing behind the upper end of cutting tip needle stand；Stainless steel needle tubing
The lower end that lower end passes through butt end needle stand forms butt end needle tubing；The both ends of stainless steel needle tubing and needle stand seal fixed company respectively
It connects, gap is equipped between stainless steel needle tubing and blood return tube；Through equipped with blood back hole, blood back hole on stainless steel needle tubing in blood return tube
It is connected with blood return tube；Through venthole is equipped on the side wall of filled chamber, venthole is connected with the external world；It is additionally provided in filled chamber
Filter core, filter core are filled in inside filled chamber, and ventable when filter core is using drying, chance liquid expands closed material and is made.
Preferably, the top that butt end needle stand connect one end with cutting tip needle stand is equipped with boss, and the center of boss, which is equipped with, to be passed through
The butt end pin hole of butt end needle stand is worn, stainless steel needle tubing runs through butt end pin hole.
Preferably, through centre bore is equipped in the middle part of filter core, boss passes through centre bore.
Preferably, boss is round boss；Filter core is the cyclic structure equipped with centre bore, and the diameter of centre bore is slightly larger than convex
The diameter of platform；The diameter of filter core is slightly less than the diameter of filled chamber.
Preferably, filled chamber top edge and lower edge are respectively equipped with gap.
Preferably, the diameter of filled chamber is greater than the diameter of lower end blood back room.
Preferably, assembly and connection mode can be welding, be perhaps bonded and be perhaps threadedly coupled or be interference fitted together.
Preferably, venthole is along the needle stand radial distribution.
Preferably, filter core uses superhigh molecular weight polyethylene material.
Preferably, needle stand is transparent plastic material.
The utility model has the beneficial effects that the utility model provides, a kind of composed structure is simple, scientific in principle is reasonable, blood back
Room is small, acquisition blood volume is substantially reduced and the process of instruction is clear quickly, blood sampling sample accuracy significantly improve it is visual
Blood taking needle.
(1) the utility model provides a kind of visual blood taking needle, and blood back building volume is substantially reduced compared with prior art, effectively
The waste and rotation for reducing blood in blood back room or observation ward cause the degree of Erythrocyte Damage, reduce pain when people's blood sampling
It is bitter；The ingehious design of blood back room, filled chamber and filter core simultaneously, when filter core blocks venthole completely, the blood of acquisition
Liquid sample directly passes through in stainless steel needle tubing progress heparin tube, and the blood sample for entering blood back room does not enter in heparin tube, shows
The accuracy for improving acquisition blood sample is write, provides reliable guarantee for final detection blood sample.
(2) ventable when filter core is using drying, chance liquid expands closed material and is made, when using most starting, blood back
Room is in communication with the outside by venthole, using capillary theory, blood can be made quickly and effectively to enter blood back room, makes instruction
Process is clearly quick.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the main view of the cutting tip needle stand in Fig. 1；
Fig. 3 is the schematic diagram of the bottom view of the cutting tip needle stand in Fig. 1；
Fig. 4 is the A-A cross-sectional view of Fig. 3；
Fig. 5 is the schematic diagram of the main view of the butt end needle stand in Fig. 1；
Fig. 6 is the schematic diagram of the top view of the butt end needle stand in Fig. 1；
Fig. 7 is the B-B cross-sectional view of Fig. 6；
Fig. 8 is the schematic diagram of the main view of the filter core in Fig. 1；
Fig. 9 is the schematic diagram of the top view of the filter core in Fig. 1.
Marked in the figure: 1. cutting tip needle stands, 2. butt end needle stands, 31. blood return tubes, 32. lower end blood back rooms, 33. gaps, 4.
Filled chamber, 5. stainless steel needle tubings, 6. cutting tip needle tubings, 7. butt end needle tubings, 71. butt end pin holes, 8. blood back holes, 9. ventilations
Hole, 10. filter cores, 11. boss, 12. centre bores, 13. gaps.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, to help the utility model is understood
Content.Method used in the utility model is conventional production method unless otherwise required；Used raw material,
It unless otherwise required, is conventional commercial product.
As shown in FIG. 1 to FIG. 9, a kind of visual blood taking needle provided by the utility model is equipped with transparent plastic material
Needle stand and a both ends all have the stainless steel needle tubing 5 of needle point；Needle stand is equipped with cutting tip needle stand 1 and butt end needle stand 2, cutting tip
Hollow blood back room is equipped with inside needle stand 1, the top of blood back room is equipped with blood return tube 31, and the lower part of blood back room is equipped with lower end blood back room
2, blood return tube 31 and lower end blood back room 2 surround inverted " t " type blood back room；Cutting tip needle stand 1 is close by welding with butt end needle stand 2
Envelope connection；Cutting tip needle stand 1 and butt end needle stand 2 form hollow filled chamber 4, filled chamber 4 and 2 phase of lower end blood back room after assembling
Connection.5 upper end of stainless steel needle tubing sequentially passes through filled chamber 4, lower end blood back room 2, blood return tube 31 and the shape behind the both ends of needle stand
At cutting tip needle tubing 6；5 lower end of stainless steel needle tubing passes through butt end needle stand 2 and forms butt end needle tubing 7；Stainless steel needle tubing 5 and needle stand
Both ends are equipped with gap 33 by the way that sealed connection is welded and fixed between stainless steel needle tubing 5 and blood return tube 31, be convenient for blood from blood return tube
31 flow into blood back room 2.
Through blood back hole 8 is equipped on the stainless steel needle tubing 5 in blood return tube 31, blood back hole 8 is communicated with blood return tube 31；It fills out
It fills through venthole 9 is equipped on the side wall of room 4, for venthole 9 along needle stand radial distribution, this can guarantee blood return tube 31, lower end
Air in blood back room 2 and filled chamber 4 is discharged from venthole 9.Filter core 10 is additionally provided in filled chamber 4, filter core 10 is filled in filling
Inside room 4, the use superhigh molecular weight polyethylene material of filter core 10 is made, and makes filter core 10 with ventable when drying, chance blood is swollen
Swollen closed performance.The top that butt end needle stand 2 connect one end with cutting tip needle stand 1 is equipped with boss 11, and stainless steel needle tubing 5 runs through
Boss 11；Through centre bore 12 is equipped in the middle part of filter core 10, boss 11 passes through centre bore 12.
Mainly divide three processes using the visual blood taking needle acquisition blood sample of the utility model: first, when using this reality
Before novel visual blood taking needle blood sampling, butt end needle tubing 7 is blocked, cutting tip needle tubing 6 is venipuncture, passes sequentially through blood back
Hole 8, blood return tube 31, lower end blood back room 2, filled chamber 4 and internal ventilative filter core 10 and venthole 9 are guaranteeing that blood sampling detection is quasi-
It is connected to greatest extent with the external world while exactness, the blood back speed and closing when being remarkably improved acquisition blood sample are ventilated
The speed in hole 9.Second, taken a blood sample using the visual blood taking needle of the utility model when puncturing vein, the pressure of venous blood itself with
And capillary theory and under the action of vacuum blood collection tube negative pressure, blood sample along after at cutting tip needle tubing 6 to blood back hole 8 again
Blood return tube 31, lower end blood back room 2, filled chamber 4 are sequentially entered, is finally contacted with filter core 10, the chance blood expansion of filter core 10 is closed will
Venthole 9 is blocked completely and filter core 10 closely surrounds boss 11, can be by blood return tube 31, lower end blood back room 2 and filled chamber
Air in 4 is discharged from venthole 9 completely, guarantees the leakproofness of entire blood back room and filled chamber 4.Can understand during this can
Depending on the blood flow situation in blood back room and filled chamber 4, while the volume of blood back room and filled chamber 4 is maximally reduced, both
The waste of blood is reduced, and reduces feeling of pain when people's blood sampling.Third, when the chance blood expansion of filter core 10 is closed by venthole 9
After blocking completely, blood cannot flow out from blood back hole 8, butt end needle tubing 7 is connected to heparin tube, blood directly passes through stainless
For draw point pipe 5 quickly through entering in heparin tube at butt end needle tubing 7, venous blood is directly entered vacuum by stainless steel needle tubing 5
In heparin tube, after the acquisition for completing sample, then blood relevant item detection is carried out.The blood finally acquired, needs not move through back
Blood room, when effectively avoiding using current existing visual blood taking needle, blood causes Erythrocyte Damage in the rotation of blood back room, and effectively
Packing material is avoided to take a blood sample caused by the absorption of blood the error of sample, so that the accuracy of acquisition blood is significantly improved, from
And guarantee also is provided to improve the accuracy of final blood test results, there is significant practicability.
As shown in Fig. 5~Fig. 9, it is preferred that boss 11 is round boss, and the center of boss 11, which is equipped with, runs through butt end needle stand
2 butt end pin hole 71, stainless steel needle tubing 5 run through butt end pin hole 71；Filter core 10 is the cyclic structure equipped with centre bore 12, in
The diameter in heart hole 12 is slightly larger than the diameter of boss 11；The diameter of filter core 10 is slightly less than the diameter of filled chamber 4；The diameter of filled chamber 4
Greater than the diameter of 2 bottom of lower end blood back room；Filter core 10 and 4 top edge of filled chamber and lower edge are respectively equipped with gap 13 simultaneously,
Guarantee to be connected with the external world to greatest extent while blood sampling accuracy in detection, improves the speed of blood circulation, i.e., by stainless steel
Gas in needle tubing 5 and blood back room and filled chamber 4 quickly excludes, while quickly blocking the venthole 9 being in communication with the outside,
Make to form closed environment inside needle stand, following blood can more rapidly pass through stainless steel needle tubing 5 and enter in heparin tube, very
A blood collection procedure is quick, accurately, reduces the loss of blood to greatest extent.
The utility model butt end needle tubing 7 is additionally provided with matched rubber blood resistance unit, and butt end needle tubing 7 is blocked before use, is made
Blood is flowed into heparin tube with middle opening rubber blood resistance unit, and butt end needle tubing 7 is blocked after use for closed blood, prevents from remaining
Remaining blood outflow pollutes.
The utility model is obviously reduced due to the volume of blood back room, and the elongated visualization of blood return tube 31 is high, so needle
Pedestal product size can be identical as the needle stand size of common blood taking needle, can match with common safety type needle holder, use this
After the visual blood taking needle of utility model, after the syringe needle of blood taking needle is protected, convenient for collecting, so that syringe needle be avoided to make human body
At secondary injury.
The utility model provides a kind of visual blood taking needle, and blood back building volume is substantially reduced compared with prior art, effectively drops
The waste Yu rotation of blood cause the degree of Erythrocyte Damage in low blood back room or observation ward, reduce pain when people's blood sampling
It is bitter；The ingehious design of blood back room, filled chamber 4 and filter core 10 simultaneously, when filter core 10 blocks venthole 9, acquisition
Blood sample directly passes through in 5 progress heparin tube of stainless steel needle tubing, significantly improves the accuracy of acquisition blood sample, is most final inspection
It surveys blood sample and reliable guarantee is provided.Ventable when filter core 10 is using drying, chance liquid expands closed material and is made, and is using
When most starting, blood back room is in communication with the outside by venthole 9, using capillary theory, blood can be made quickly and effectively to enter
Blood back room keeps the process of instruction clearly quick.
The flashback chamber chamber of current existing blood back needle is bigger, and blood is to enter cavity to flow into heparin tube through convolution, adopts
There is quantitative blood to leave the intracavitary of blood back needle after blood and causes blood loss, about waste 0.3mL blood；Preferential, this
When the blood about 0.1ml of the bright visual blood back needle observation of method, reach that visual effect is significant, and enters the blood of blood back room not
Heparin tube can be entered back into, observation is only served and only uses, is to separate with detection blood, until blood collection finishes, it is right at present to meet
A kind of blood back room is small and the demand of the apparent blood back needle of visual effect.
The above is only the embodiments of the present invention, such as 10 material of filter core can be that any use is ventable when dry
Chance liquid expands closed material and is made；Cutting tip needle stand 1 and butt end needle stand 2 can be perhaps bonded or spiral shell by welding
Line connection, or interference fit is together etc., it is close that stainless steel needle tubing 5 with needle stand both ends passes through Nian Jie, part that is sealedly and fixedly connected etc.
Envelope is fixedly connected, and needle stand volume size can make according to actual needs, and the visual blood taking needle of the utility model may be implemented.
Only as described above, only specific embodiment of the utility model, when the utility model cannot be limited with this
The range of implementation, all equivalent changes and modifications done according to present utility model application the scope of the patents, should all belong to the utility model
Covering scope.
Claims (10)
1. a kind of visual blood taking needle, is equipped with transparent needle stand and a both ends all have the stainless steel needle tubing of needle point, the needle
Seat is equipped with cutting tip needle stand and butt end needle stand, is equipped with hollow blood back room inside the cutting tip needle stand, which is characterized in that institute
Blood back room top is stated equipped with blood return tube, blood back room lower part is equipped with lower end blood back room, and blood return tube and lower end blood back room surround down
Set T-shape；Form hollow filled chamber after the cutting tip needle stand and the butt end needle stand assembly and connection, the filled chamber with
Lower end blood back room is connected；Stainless steel needle tubing upper end sequentially passes through the filled chamber, lower end blood back room, described
Blood return tube simultaneously forms cutting tip needle tubing behind the upper end of the cutting tip needle stand；It is described right that stainless steel needle tubing lower end passes through
The lower end for connecing end needle stand forms butt end needle tubing；The both ends of the stainless steel needle tubing and the needle stand are sealedly and fixedly connected respectively,
Gap is equipped between the stainless steel needle tubing and the blood return tube；Run through on the stainless steel needle tubing in the blood return tube and is equipped with
Blood back hole, the blood back hole are connected with the blood return tube；Through equipped with venthole, the ventilation on the side wall of the filled chamber
Hole is connected with the external world；Filter core is additionally provided in the filled chamber, the filter core is filled in inside the filled chamber, and the filter core is adopted
Ventable when with drying, chance liquid expands closed material and is made.
2. a kind of visual blood taking needle according to claim 1, which is characterized in that the butt end needle stand and the cutting tip
The top that needle stand connects one end is equipped with boss, and the center of the boss is equipped with the butt end pin hole through the butt end needle stand,
The stainless steel needle tubing runs through the butt end pin hole.
3. a kind of visual blood taking needle according to claim 2, which is characterized in that through the center of being equipped in the middle part of the filter core
Hole, the boss pass through the centre bore.
4. a kind of visual blood taking needle according to claim 3, which is characterized in that the boss is round boss；The filter
Core is the cyclic structure equipped with centre bore, and the diameter of the centre bore is slightly larger than the diameter of the boss；The diameter of the filter core
It is slightly less than the diameter of the filled chamber.
5. a kind of visual blood taking needle according to claim 4, which is characterized in that the filter core and the filled chamber top edge
Gap is respectively equipped with lower edge.
6. a kind of visual blood taking needle according to claim 1, which is characterized in that the diameter of the filled chamber be greater than it is described under
Hold the diameter of blood back room.
7. a kind of visual blood taking needle according to claim 1, which is characterized in that the assembly and connection mode can be welding,
Perhaps bonding is perhaps threadedly coupled or is interference fitted together.
8. a kind of visual blood taking needle according to claim 1, which is characterized in that the venthole radially divides along the needle stand
Cloth.
9. a kind of visual blood taking needle according to claim 1, which is characterized in that the filter core uses superhigh molecular weight polyethylene
Alkene material.
10. a kind of visual blood taking needle according to claim 1, which is characterized in that the needle stand is transparent plastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636667.4U CN208958143U (en) | 2018-04-28 | 2018-04-28 | A kind of visual blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820636667.4U CN208958143U (en) | 2018-04-28 | 2018-04-28 | A kind of visual blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208958143U true CN208958143U (en) | 2019-06-11 |
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ID=66746919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820636667.4U Active CN208958143U (en) | 2018-04-28 | 2018-04-28 | A kind of visual blood taking needle |
Country Status (1)
| Country | Link |
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| CN (1) | CN208958143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354618A (en) * | 2018-04-28 | 2018-08-03 | 威海赛威医疗科技有限公司 | A kind of visual blood taking needle |
-
2018
- 2018-04-28 CN CN201820636667.4U patent/CN208958143U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108354618A (en) * | 2018-04-28 | 2018-08-03 | 威海赛威医疗科技有限公司 | A kind of visual blood taking needle |
| CN108354618B (en) * | 2018-04-28 | 2024-03-08 | 威海赛威医疗科技有限公司 | Visual blood taking needle |
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