CN108338794A - A kind of vacuum blood sampler - Google Patents
A kind of vacuum blood sampler Download PDFInfo
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- CN108338794A CN108338794A CN201810336431.3A CN201810336431A CN108338794A CN 108338794 A CN108338794 A CN 108338794A CN 201810336431 A CN201810336431 A CN 201810336431A CN 108338794 A CN108338794 A CN 108338794A
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- blood
- needle tubing
- send
- rubber plug
- pin hole
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150343—Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
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- Life Sciences & Earth Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
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- Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
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- Dermatology (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
A kind of vacuum blood sampler, including：Tube body, rubber plug, Guan Gai；It is closed cecum that, which there are an opening, bottom end in tube body top, and the closing of tube body top end opening is made to have the tube cavity of vacuum degree to be isolated with external fluid by elastic rubber plug, and pipe lid is sheathed on rubber plug, and pipe caping end center is equipped with pipe cover gab；Further include the accommodating chamber of pouch-shaped, accommodating chamber is the pouch-shaped cavity small for mouth and large for cavity collectively formed by the rubber plug recess of pipe caping end inner surface and rubber plug top upper table downwards；Pipe cover gab is accommodating chamber to outward opening, and pipe cover gab area is less than rubber plug recessed openings area.
Description
Technical field
The present invention relates to a kind of vacuum blood samplers, belong to the field of medical instrument technology.
Background technology
Venous blood collection is a kind of the most commonly used general technology in clinical departments room, and most-often used blood taking needle includes a use
In puncture the blood-collecting needle tube of skin and wall of vein, one send blood taking needle tube socket that blood-collecting needle tube is fixed in it, one to blood needle tubing；
Blood syringe intracavity is sent to be connected with blood taking needle tube socket inner cavity directly or by delivery hose inner cavity；It send and conformal outside blood needle tubing is arranged one
Gum cover, gum cover will send blood needle tubing to be isolated with external fluid；After blood-collecting needle tube enters vein, send blood needle tubing that need to pierce through containing vacuum
The rubber plug of heparin tube tube body top end opening, blood spurting flow into vacuum blood collection tube cavity, are extracted when blood volume is enough and send blood needle tubing,
Gum cover elastic recovery coats again send blood syringe tip end resistance Hemostatic Oral Liquid to flow out, and may thereafter continue to pierce through another vacuum blood collection tube continuity
Blood sampling process.
The outer diameter of blood needle tubing is sent to be usually less than 1mm, internal diameter 0.5mm or so, the outer gum cover side wall thickness 0.7mm being arranged is left
The right side, gum cover cecum wall thickness 2mm or so send blood needle tubing distance between two tips gum cover cecum inner surface 4mm or so, and when use will send blood needle tubing
Tip pierces through the rubber plug on vacuum blood collection tube top and gum cover compression is made to be stacked on outside rubber plug, when blood is rigid under microscopic dimensions
Surface is sharp, coarse when the quick spurting of blood needle tubing pinhole edges being sent to flow into vacuum blood collection tube cavity, and friction and cutting are made
With the destruction that can lead to a large amount of haemocytes especially red blood cell, more significant haemolysis occurs, most literature reports existing vein
The hemolysis rate of blood sampling is 5-10%, and strong influence the accuracy of blood test；In addition, quickly blood flow directly hits hard
Vacuum blood collection tube wall, also easily lead to the destruction of haemocyte；It extracts and send after the completion of a vacuum blood collection tube blood collection
Blood needle tubing, the larger gum cover of thickness coat send again because its form of the elastic recovering force of itself is by stacked actively reinstatement
Blood needle tubing tip, avoids blood outflow, can penetrate another vacuum blood collection tube again.
Since gum cover is total to the sidewall thickness and gum cover that send the dependence gum cover of cladding again at blood needle tubing tip in blood collection procedure
The elastic force for the synthesis that length generates, thus give the necessary 4mm of the spacing of blood needle tubing distance between two tips gum cover cecum inner surface or so；And it is right
Send the sealing function at blood needle tubing tip with dependence on the blind end section of thickness 2mm or so, and when piercing angle is not vertical enough, 4mm
The above-mentioned spacing of left and right easily makes thick and heavy blind end section shift and make the side for sending blood needle tubing tip from thickness 0.7mm or so
Wall is pierced by, and is not only not easy actively to restore but also blood easily leaks out.
In short, following serious problems easily occur for the vacuum blood sampler of existing Clinical practice：
1. blood surface rigid under microscopic dimensions is sharp, coarse blood needle tubing pinhole edges fast turbulent shape is sent to spray
It penetrates, easily leads to the destruction of a large amount of haemocytes especially red blood cell.
2. the tube wall that the blood flow of turbulence-like injection directly hits vacuum blood collection tube hard easily leads to a large amount of haemocytes especially
It is the destruction of red blood cell.
3. the active recovering structure of traditional gum cover relies on the longer spacing and foot for sending blood needle tubing tip and gum cover top
Enough sidewall thickness, thick and heavy blind end section easily deviated and made that blood needle tubing tip is sent to be pierced by from side wall when piercing, glue when extraction
Set is not only not easy actively to restore but also blood easily leaks out.
Invention content
The present invention to solve the above-mentioned problems, provides a kind of vacuum blood sampler.
The object of the present invention is achieved like this：
A kind of vacuum blood sampler, including：Tube body, rubber plug, Guan Gai；Tube body top end opening, bottom end are closed cecum, bullet
Property rubber plug by tube body top end opening closing make that there is the tube cavity of vacuum degree to be isolated with external fluid, pipe lid is sheathed on rubber plug
On, pipe caping end center is equipped with pipe cover gab；Further include the accommodating chamber of pouch-shaped, accommodating chamber be by pipe caping end inner surface with
The pouch-shaped cavity small for mouth and large for cavity that the rubber plug recess of rubber plug top upper table downwards collectively forms；Pipe cover gab is accommodating chamber
To outward opening, pipe cover gab area is less than rubber plug recessed openings area.
It is round or approximate circle, the top edge loop wire of pipe cover gab to send the entrance of blood needle tubing, pipe cover gab for convenience
Diameter or area are more than the diameter or area of lower edge loop wire；The top edge loop wire and lower edge loop wire, be loop line or
The loop wire of approximation circle, top edge loop wire is relatively large in diameter when for circle；When for oval or other are approximate circle, top edge ring
Line area is larger.
The accommodating chamber of such structural generation, the gum cover that can be stacked compression when sending blood needle tubing to be pierced into vacuum blood collection tube cavity
Gum cover quilt is made to the barrier of the gum cover of the stacking in movement by the lower edge loop wire of pipe cover gab when accommodating, and extracting completely
The dynamic recovery for not depending on natural resiliency coats send blood needle tubing tip again；Because not depending on the elasticity of gum cover side wall, then allow
Side wall is significantly thinning, send blood syringe intracavity diameter to increase, then increases the sectional area of blood outflow port, reduces blood stream
Speed reduces haemolysis；And can make that blood needle tubing top of the tip is given to be less than 2mm with gum cover cecum inner surface vertex―straight line distance, even
Be reduced into 0, the thick cecum of gum cover will not because puncture angle is bad and deflection, because cecum deflection cause to send blood needle tubing tip from
The blood leakage risk that gum cover side wall is pierced by initiation greatly reduces.
In order to reduce the haemolysis occurred because blood flow hits the vacuum blood collection tube wall of hard, rubber plug bottom end periphery attaches pipe
Internal surface extends downwardly, and constitutes rubber plug extension, rubber plug extension inner cavity can accommodate sending through rubber plug receptacle portion
Blood needle tubing；Rubber plug extension can play support, sealing function, and inner surface flexible can be accepted by sending the blood ejected in blood needle tubing
Liquid, the rubber plug receptacle portion refer to holding between the rubber plug recess bottom face on rubber plug top and rubber plug bottom end lower surface
It picks the puncture of blood needle tubing and transfers to and send reclosable part after blood needle tubing.
Further optimization, the downward ring week thin-walled in rubber plug bottom end lower surface extend into shirt rim shape part, the shirt rim shape of rubber plug
Portion inner surface can accommodate for the shirt rim inner cavity on boundary and send blood needle tubing through rubber plug receptacle portion；Shirt rim shape part free-end court
To tube body bottom end.
Then, the downward ring week thin-walled in rubber plug bottom end lower surface extends into shirt rim shape part, table in the shirt rim shape part of rubber plug
Face can accommodate for the shirt rim inner cavity on boundary and send blood needle tubing through rubber plug receptacle portion；Shirt rim shape partial outer face and table in tube body
There are gaps between face, are shirt rim external series gap；Shirt rim when shirt rim external series gap can be such that shirt rim shape portion inner surface is impacted by blood flow
Shape part can deform upon and buffer outward.
The shirt rim shape part free-end of better deformation buffer after being impacted for blood flow, rubber plug is equipped with wavy or zigzag
Gap.
Further, the shirt rim shape part free-end of rubber plug is equipped with wavy or jagged gap；It is additionally provided with along open-minded
The shallow slot that part of the mouth far from free-end upwardly extends.
Vacuum blood sampler further includes a blood-collecting needle tube for puncturing skin and wall of vein, one by blood-collecting needle tube
The blood taking needle tube socket fixed in it, one send blood needle tubing；Send blood syringe intracavity directly or by delivery hose inner cavity and blood taking needle
Tube socket inner cavity is connected；Send it is conformal outside blood needle tubing be arranged a gum cover, gum cover will send blood needle tubing to be isolated with external fluid；Further include penetrating
Blood hose penetrates a blood hose part positioned at sending blood syringe intracavity, a part to be leant out out of pin hole that send blood needle tubing tip, it is soft to penetrate blood
The end that pipe leans out part is set there are one vertical opening；Matching can make under same penetration Resistance, send blood needle tubing inside and outside diameter
Increase.
It in order to increase the area of blood outflow port, penetrates a blood hose part and is located at and send blood syringe intracavity, a part is from sending blood
It is leant out in the pin hole at needle tubing tip, penetrates blood hose and lean out the end of part and set there are one vertical opening and at least one side opening.
In order to shorten blood flow path, avoids blood flow from hitting vacuum blood collection tube bottom end, further include penetrating blood hose, penetrate blood hose one
Part, which is located at, send blood syringe intracavity, and a part is leant out out of pin hole that send blood needle tubing tip, penetrates the end that blood hose leans out part
For cecum, the end for penetrating blood hose is equipped at least one lateral openings.
A kind of mode be further include one for puncture the blood-collecting needle tube of skin and wall of vein, one blood-collecting needle tube is consolidated
The blood taking needle tube socket of Ding Qinei, one send blood needle tubing；Send blood syringe intracavity directly or by delivery hose inner cavity and blood-collecting needle tube
Seat inner cavity is connected；Send it is conformal outside blood needle tubing be arranged a gum cover, gum cover will send blood needle tubing to be isolated with external fluid；Send blood syringe tip
End is cecum, and the pin hole of blood outflow is lateral pin hole, and lateral pin hole is at least one.
Further comprehensive, it is cecum to send blood needle tubing tip, and the pin hole of blood outflow is lateral pin hole, and lateral pin hole is at least
One；Blood hose is penetrated positioned at sending in blood syringe intracavity, blood hose is penetrated and is equipped with lateral openings corresponding with lateral pin hole；The phase
Correspondence refers to, the two be positioned next to and center is overlapped, blood flows out directly from the lateral openings for penetrating blood hose from sending blood needle tubing
Lateral pin hole enter in blood sampling tube cavity, without contacting lateral pinhole edges, avoid lateral pin hole rough edge to blood
The destruction of cell.
Specific refinement, it is cecum to send blood needle tubing tip, and the pin hole of blood outflow is lateral pin hole, and lateral pin hole is at least one
It is a；Blood hose is penetrated positioned at sending in blood syringe intracavity, blood hose is penetrated and is equipped with lateral openings corresponding with lateral pin hole；Penetrate blood hose
Lateral openings area be less than lateral pin hole area.
Accurately, it is cecum to send blood needle tubing tip, and the pin hole of blood outflow is lateral pin hole, and lateral pin hole is at least one
It is a；The distance between lateral pin hole of blood needle tubing seat ring shape boss lower surface and farthest side is sent to be less than vacuum blood sampler pipe caping
Hold outer surface with it is intermarginal under rubber plug extension at a distance from；Extended in rubber plug with ensuring that the blood ejected from side to pin hole is splashed down
The inner surface of partially flexible reduces hemolysis rate.
A kind of requirement is that send blood needle tubing tip be cecum, and the pin hole of blood outflow is lateral pin hole, and lateral pin hole is at least
One；The distance between lateral pin hole of blood needle tubing seat ring shape boss lower surface and farthest side is sent to be less than vacuum blood sampler pipe lid
The distance between top outer surface and rubber plug shirt rim shape part free-end；To ensure that the blood ejected from side to pin hole splashes down
Rubber plug extension inner surface flexible reduces hemolysis rate.
In order to send blood needle tubing tip not stab more weak side wall, blood needle tubing top of the tip and gum cover cecum inner surface are sent
Vertex―straight line distance is less than 2mm.
The beneficial effects of the invention are as follows：
1. blood from area it is larger send blood needle tubing pin hole with compared with low velocity flow into vacuum blood collection tube cavity, to the greatest extent
Reduce the destruction of haemocyte especially red blood cell.
2. from send blood needle tubing pin hole spray blood flow directly hit vacuum blood collection tube rubber plug flexible extension or
The shirt rim shape part of thin-walled, utmostly reduces the destruction of haemocyte especially red blood cell.
3. the active recovering structure of traditional gum cover is substituted by passive type recovering structure, blood needle tubing top of the tip and gum cover are sent
The spacing on cecum inner surface vertex significantly shortens, and gum cover sidewall thickness substantially reduces, and not only allows to match under same penetration Resistance
That sets that internal-and external diameter significantly increases send blood needle tubing, and when utmostly eliminating piercing caused by thick and heavy blind end section offset
Blood leaks out.
Description of the drawings
The attached drawing for not limiting to the present invention is as follows：
Figure 1A：The local cutting structural schematic diagram of existing clinical common vacuum blood sampler；
Figure 1B：The dimensional decomposition structure diagram of existing clinical common vacuum blood collection tube；
Fig. 2：The whole cutting structural schematic diagram of the embodiment of the present invention 1；
Fig. 3 A：The perspective cut-away structural schematic diagram of the embodiment of the present invention 1；
Fig. 3 B：The local cutting structural schematic diagram of the embodiment of the present invention 1 send blood syringe tip terminal spine to wear rubber plug；
Fig. 3 C：The local cutting structural schematic diagram of the embodiment of the present invention 1 send blood needle tubing tip to be detached from rubber plug；
Fig. 4：The local cutting structural schematic diagram of the embodiment of the present invention 2；
Fig. 5 A：The local cutting structural schematic diagram of the embodiment of the present invention 3；
Fig. 5 B：The perspective cut-away structural schematic diagram of the embodiment of the present invention 3；
Fig. 5 C：The use process status schematic diagram of the embodiment of the present invention 3；
Fig. 6：The amagnified partial perspective structural schematic diagram of the embodiment of the present invention 4；
Fig. 7 A：The local cutting structural schematic diagram of the embodiment of the present invention 5, during sending blood syringe tip terminal spine to wear rubber plug；
Fig. 7 B：The local cutting structural schematic diagram of the embodiment of the present invention 5 send blood syringe tip terminal spine to wear rubber plug completion；
Fig. 8：A kind of local cutting structural schematic diagram of accommodation of the embodiment of the present invention 5；
Fig. 9：The local cutting structural schematic diagram of the another kind accommodation of the embodiment of the present invention 5；
Figure 10：The whole cutting structural schematic diagram of the embodiment of the present invention 6；
Figure 11 A：The partial enlargement structural representation of the embodiment of the present invention 7；
Figure 11 B：The partial enlargement structural representation of the embodiment of the present invention 7；
Figure 12：A kind of general local cutting structural schematic diagram of various embodiments of the present invention；
Figure 13 A：Existing Clinical practice send blood needle tubing partial enlargement cutting structural schematic diagram；
Figure 13 B：The general one kind of various embodiments of the present invention send blood needle tubing partial enlargement cutting structural schematic diagram；
Figure 14：The whole cutting structural schematic diagram of the embodiment of the present invention 8；
Figure 15：The whole cutting structural schematic diagram of the embodiment of the present invention 9；
In figure：1. vacuum blood sampler；11. blood-collecting needle tube；111. blood-collecting needle tube tip；112. blood-collecting needle tube pin hole；12.
Blood taking needle tube socket；120. blood taking needle tube socket inner cavity；13. delivery hose；130. delivery hose inner cavity；19. blood taking needle tube socket handle；
21. sending blood needle tubing；210. send blood syringe intracavity；211. send blood needle tubing tip；2111. send blood needle tubing top of the tip；212. send blood
Needle tubing tip pin hole；2121. pin hole inward flange；213. send blood needle tubing lateral pin hole；2131. send the lateral pin hole 213 of blood needle tubing thick
Rough edge；22. sending blood needle tubing seat；221. send blood needle tubing seat annular convex platform；2211. send blood needle tubing seat ring shape boss lower surface；
23. gum cover；230. gum cover inner cavities；231. gum covers stacked；The gum cover stacked at 2311. pipe cover gabs；232. gum cover cecums；
The inner surface vertex of 2321. gum cover cecums；233. gum cover side walls；24. penetrating blood hose；241., which penetrate blood hose, leans out part；2411.
Penetrate the vertical opening that blood hose leans out portion distal end；2412., which penetrate blood hose, leans out part side opening；2413. penetrate blood hose and side
To the corresponding lateral openings of pin hole；242. penetrate the end that blood hose leans out part；31. the tube body of vacuum blood collection tube；310. true
Sky blood sampling tube cavity；311. tube body top end openings；312. tube body bottom ends；313. inner surface of tube body；32. rubber plug；321. rubber plug tops
End；3211. rubber plug tops upper surface；322. rubber plug bottom ends；3221. rubber plug bottom ends lower surface；323. rubber plug extensions；
3230. rubber plug extensions inner cavity；3231. rubber plug extension inner surfaces；3232. rubber plug extension lower edges；324. rubber plug
Recess；3240. rubber plug recessed openings；3241. rubber plugs recess bottom face；325. rubber plug receptacle portions；33. pipe lid；330. pipe lids
Opening；331. pipe caping ends；3311. pipe cover gab top edge loop wires；3312. pipe cover gab lower edge loop wires；332. pipe caping
Hold inner surface；333. pipe caping ends outer surface；The extension at 334. pipe caping ends outer surface；34. accommodating chamber；35. shirt rim shape
Part；The inner cavity of 350. shirt rims shape part；351. shirt rim shape portion inner surfaces；352. shirt rim shape partial outer faces；353. shirt rim
Shape part free-end；3531. wavy or jagged gap；Part of 3532. gap far from free-end；3533. shallow slot；
36. shirt rim external series gap；L1. send blood needle tubing seat ring shape boss lower surface 2211 vertical with 213 lower extreme point of lateral pin hole of farthest side
Distance；L2. the vertical range of pipe caping end outer surface 333 and rubber plug extension lower edge 3232；L3. pipe caping end outer surface
333 with the vertical range of rubber plug shirt rim shape part free-end 353；L4. clinical existing to send blood needle tubing top of the tip 2111 and gum cover
The vertical range on cecum inner surface vertex 2321；L5. of the invention to send blood needle tubing top of the tip 2111 and gum cover cecum inner surface
The vertical range on vertex 2321.
Specific implementation mode
Limitation the embodiment of the present invention is not as follows：
Embodiment 1：
As shown in Figure 1A, 1B, the local cutting structural schematic diagram and vacuum of existing clinical common vacuum blood sampler are adopted
The dimensional decomposition structure diagram of blood vessel, a kind of vacuum blood sampler 1, including：Tube body 31, rubber plug 32, pipe lid 33；Tube body 31 pushes up
End opening 311, bottom end 312 are closed cecum, and elastic rubber plug 32 makes the closing of 31 top end opening 311 of tube body with vacuum degree
Tube cavity 310 be isolated with external fluid, pipe lid 33 is sheathed on rubber plug 32, and 331 center of pipe caping end is opened equipped with pipe lid
Mouth 330；The outer diameter of blood needle tubing 21 is sent to be usually less than 1mm, internal diameter 0.5mm or so, the outer 23 side wall thickness 0.7mm of gum cover being arranged
Left and right, gum cover cecum wall thickness 2mm or so send blood needle tubing top of the tip 2111 apart from 232 inner surface vertex 2321 of gum cover cecum
Distance is 4mm or so, and when use will send blood needle tubing tip 211 to penetrate the rubber plug 32 on vacuum blood collection tube top and gum cover 23 is made to compress
It is stacked on outside rubber plug 32, is extracted after the completion of a vacuum blood collection tube blood collection and send blood needle tubing 21, the larger gum cover 23 of thickness
Because its form of the elastic recovering force of itself is actively restored to the original state by stacked, cladding send blood needle tubing tip 211 again, avoids blood
Outflow, can penetrate another vacuum blood collection tube again.
Due in blood collection procedure gum cover 23 to send blood needle tubing tip 211 again cladding rely on gum cover 23 sidewall thickness and
The elastic force for the synthesis that 23 total length of gum cover generates, thus send blood needle tubing top of the tip 2111 apart from 232 inner surface top of gum cover cecum
Necessary 4mm of the spacing of point 2321 or so；And to sending the sealing function at blood needle tubing tip 211 with dependence on the gum cover of thickness 2mm or so
232 part of cecum, and when piercing angle is not vertical enough, the above-mentioned spacing of 4mm or so easily makes thick and heavy gum cover cecum 232
Divide and shift and make that blood needle tubing tip 211 is sent to be pierced by from the side wall of thickness 0.7mm or so, is not only not easy actively recovery but also blood
Liquid easily leaks out.
The embodiment of the present invention 1 includes the receiving of pouch-shaped to solve the above problems, as shown in Fig. 2, Fig. 3 A, Fig. 3 B, Fig. 3 C
Chamber 34, accommodating chamber 34 are recessed by 33 top of pipe lid, 331 inner surface 332 with the downward rubber plug in 32 top of rubber plug, 321 upper surface 3211
The 324 pouch-shaped cavitys small for mouth and large for cavity collectively formed；Pipe cover gab 330 is accommodating chamber 34 to outward opening, pipe cover gab
330 areas are less than 324 3240 areas of opening of rubber plug recess.
Send the entrance of blood needle tubing 21 for convenience, pipe cover gab 330 be it is round or approximate circle, pipe cover gab 330 it is upper
3311 diameter of edge loop wire or area are more than the diameter or area of lower edge loop wire 3312；The top edge loop wire 3311 and following
Edge loop wire 3312 is the loop wire of loop line or approximate circle, and top edge loop wire 3311 is relatively large in diameter when for circle；When being ellipse
Circle or other it is approximate circle when, loop wire 3311 area in top edge is larger.
The accommodating chamber 34 of such structural generation can will compress heap when sending the piercing vacuum blood collection tube cavity 310 of blood needle tubing 21
Folded gum cover 231 accommodates completely, and when extracting, such as Fig. 3 B, by 3312 part of lower edge loop wire of pipe cover gab 330 to pipe lid
Extrudings of the gum cover 2311 stacked at 330 of being open obstructs and the gum cover 231 of stacking is made sequentially to restore successively, and this recovery is different from
The active recovery of traditional gum cover dependence natural resiliency, but the recovery for not depending on natural resiliency that gum cover is passive, are wrapped again
It covers and send blood needle tubing tip 211, such as Fig. 3 C；Because not depending on the elasticity of gum cover side wall, then allow side wall significantly thinning, to increase
It send blood syringe intracavity 210 diameter, then increases the sectional area of blood outflow port, reduce velocity of blood flow, reduce haemolysis；And it can
Make that 21 tip of blood needle tubing, 211 vertex 2111 is sent to be less than 2mm with 23 cecum of gum cover, 232 inner surface vertex, 2321 air line distance, even
It is reduced into 0, the thick cecum 232 of gum cover will not be because puncture angle be bad and deflection, because 232 deflection of cecum causes to send blood needle tubing
The blood leakage risk that tip 211 is pierced by initiation from gum cover side wall 233 greatly reduces.
Embodiment 2：
As shown in figure 4, in order to reduce the haemolysis occurred because blood flow hits the vacuum blood collection tube wall of hard, 32 bottom of rubber plug
It holds 322 peripheries to attach 31 inner surface 313 of tube body to extend downwardly, constitutes rubber plug extension 323,323 inner cavity of rubber plug extension
3230 can accommodate and send blood needle tubing 21 through rubber plug receptacle portion 325；Rubber plug extension 323 can play support, sealing function, soft
The inner surface 3231 of property can be accepted by sending the blood ejected in blood needle tubing 21, as shown by arrows；The rubber plug receptacle portion 325
Refer to holding between rubber plug 324 bottom faces 3241 of recess on rubber plug top 321 and 32 bottom end of rubber plug, 322 lower surface 3221
It picks the puncture of blood needle tubing 21 and transfers to and send reclosable part after blood needle tubing 21.
Embodiment 3：
As shown in Fig. 5 A, 5B, 5C, in order to reduce the haemolysis occurred because blood flow hits the vacuum blood collection tube wall of hard,
Further optimization, 32 bottom end of rubber plug, 322 lower surface, 3221 downward ring week thin-walled extend into shirt rim shape part 35, the skirt of rubber plug 32
35 inner surface 351 of side shape part can accommodate for the shirt rim inner cavity 350 on boundary and send blood needle tubing 21 through rubber plug receptacle portion 325；
35 free-end 353 of shirt rim shape part is towards 31 bottom end 312 of tube body.
Then, 32 bottom end of rubber plug, 322 lower surface, 3221 downward ring week thin-walled extends into shirt rim shape part 35, the skirt of rubber plug 32
35 inner surface 351 of side shape part can accommodate for the shirt rim inner cavity 350 on boundary and send blood needle tubing 21 through rubber plug receptacle portion 325；
There are gaps 36 between 31 inner surface 313 of 35 outer surface 352 of shirt rim shape part and tube body, are shirt rim external series gap 36；Shirt rim outer room
Shirt rim shape part 35 can deform upon and buffer outward when gap 36 can be such that 35 inner surface 351 of shirt rim shape part is impacted by blood flow,
As shown in Figure 5 C, dotted line is designated as from the blood flow path for sending the side of blood needle tubing to be sent out to pin hole, the right side region of shirt rim shape part 35
Deformation outward occurs for domain, and shirt rim external series gap 36 at this time slightly reduces.
Embodiment 4：
As shown in fig. 6, better deformation buffer after being impacted for blood flow, on the basis of embodiment 3, the shirt rim shape of rubber plug 32
35 free-end 353 of part is equipped with wavy or jagged gap 3531；Further, the shirt rim shape part 35 of rubber plug 32 is free
End 353 is equipped with wavy or jagged gap 3531；Be additionally provided with along part 3532 of the gap 3531 far from free-end 353 to
The shallow slot 3533 of upper extension.
Embodiment 5：
As shown in Fig. 7 A, 7B, vacuum blood sampler further includes a blood-collecting needle tube for puncturing skin and wall of vein
11, one is sent the blood taking needle tube socket 12, one that blood-collecting needle tube 11 is fixed in it to blood needle tubing 21；Send 21 inner cavity 210 of blood needle tubing straight
It connects or is connected with 12 inner cavity 120 of blood taking needle tube socket by 13 inner cavity 130 of delivery hose；Send blood needle tubing 21 is conformal to be outside arranged a glue
Set 23, gum cover 23 will send blood needle tubing 21 to be isolated with external fluid；Further include penetrating blood hose 24, penetrates the part of blood hose 24 and be located at and send
21 inner cavity 210 of blood needle tubing, a part lean out out of pin hole 212 that send 21 tip 211 of blood needle tubing, penetrate blood hose 24 and lean out part
241 end 242 is set there are one vertical opening 2411；Matching can make under same penetration Resistance, send blood needle tubing 21 inside and outside
Diameter increases.
A kind of accommodation is, as shown in figure 8, in order to increase the area of blood outflow port, to penetrate blood hose 24 and lean out part 241
End 242 set there are one vertical opening 2411 and at least one side opening 2412, the blood flow areas of two openings significantly increase,
It effectively reduces blood flow velocity and reduces haemolysis.
As another accommodation, as shown in figure 9, in order to shorten blood flow path, blood flow is avoided to hit vacuum blood collection tube bottom end,
It is cecum to penetrate blood hose 24 and lean out the end 242 of part 241, and the end 242 for penetrating blood hose 24 is equipped at least one lateral openings
2412。
Embodiment 6：
As shown in Figure 10, a kind of mode is to further include one for puncturing the blood-collecting needle tube 11, one of skin and wall of vein
Send the blood taking needle tube socket 12, one that blood-collecting needle tube is fixed in it to blood needle tubing 21；Send 21 inner cavity 210 of blood needle tubing directly or by defeated
13 inner cavity 130 of hose is sent to be connected with 12 inner cavity 120 of blood taking needle tube socket；Send blood needle tubing 21 is conformal to be outside arranged a gum cover 23, gum cover
23 will send blood needle tubing 21 to be isolated with external fluid；It is cecum to send 21 tip 211 of blood needle tubing, and the pin hole of blood outflow is lateral pin hole
213, lateral pin hole 213 is at least one；Rubber plug 32 is equipped with shirt rim shape above-mentioned part 35 simultaneously, and arrow direction is blood flow in figure
Direction, blood flow are directly hit soft 35 inner surface 351 of skirt portion with shortest path, reduce haemolysis.
Embodiment 7：
Further comprehensive as shown in Figure 11 A, 11B, it is cecum to send 21 tip 211 of blood needle tubing, and the pin hole of blood outflow is side
To pin hole 213, lateral pin hole 213 is at least one；Blood hose 24 is penetrated positioned at sending in 21 inner cavity 210 of blood needle tubing, penetrates blood hose 24
Equipped with lateral openings corresponding with lateral pin hole 213 2413；It is described it is corresponding refer to, the two be positioned next to and center weight
Folded, blood flows out directly from the lateral openings 2413 for penetrating blood hose 24 from sending the side of blood needle tubing 21 to enter heparin tube to pin hole 213
Inner cavity 310 avoids destruction of 213 rough edge of lateral pin hole to haemocyte without contacting lateral 213 edge of pin hole.
Specific refinement, such as Figure 11 B, it is cecum to send 21 tip 211 of blood needle tubing, and the pin hole of blood outflow is lateral pin hole 213,
Lateral pin hole 213 is at least one；Penetrate blood hose 24 be located at send in 21 inner cavity 210 of blood needle tubing, penetrate blood hose 24 be equipped with it is lateral
213 corresponding lateral openings 2413 of pin hole；The area for penetrating the lateral openings 2413 of blood hose 24 is less than the face of lateral pin hole 213
Product.
Such as Figure 12, a kind of accurate generic features of the invention are cecum, blood outflow when sending 21 tip 211 of blood needle tubing
Pin hole be lateral pin hole 213, lateral pin hole 213 be at least one；Send 22 annular convex platform of blood needle tubing seat, 221 lower face 2211 with
Distance L1 between 213 lower extreme point of lateral pin hole of farthest side be less than 1 pipe lid of vacuum blood sampler, 33 top, 331 outer surface 333 with
The distance between 32 extension of rubber plug, 323 lower edge 3232 L2；To ensure that the blood ejected from side to pin hole 213 is splashed down in glue
32 extension, 323 inner surface 3231 flexible is filled in, hemolysis rate is reduced.
A kind of requirement is that send 21 tip 211 of blood needle tubing be cecum, and the pin hole of blood outflow is lateral pin hole 213, lateral needle
Hole 213 is at least one；Send 213 lower extreme point of lateral pin hole of 221 lower face 2211 and farthest side of 22 annular convex platform of blood needle tubing seat
The distance between L1 be less than 1 pipe lid of vacuum blood sampler, 33 top, 331 outer surface 333 and 32 shirt rim shape part of rubber plug, 35 free-end
The distance between 353 L3；To ensure that it is flexible in 32 shirt rim shape part 35 of rubber plug that the blood ejected from side to pin hole 213 is splashed down
Inner surface 351 reduces hemolysis rate.
Such as Figure 13 B, a kind of accurate generic features of the invention are more thin in order to send 21 tip 211 of blood needle tubing not stab
Weak gum cover side wall 233, send 21 tip of blood needle tubing, 211 vertex 2111 and 23 cecum of gum cover, 232 inner surface vertex, 2321 straight line away from
It is less than 2mm, further preferred 1mm or less from L5；Tradition compared to Figure 13 A send blood needle tubing 21 and the respective distance L4's of gum cover 23
4mm or so numerical value is substantially reduced, because 232 deflection of gum cover cecum leads to that blood needle tubing tip 211 is sent to be pierced by initiation from gum cover side wall 233
Blood leak out risk greatly reduce.
Embodiment 8：
As shown in figure 14, as a kind of accommodation of core ideas of the present invention, the rubber plug shown in Fig. 3 A of accommodating chamber 34 is recessed
It falls into 324 to be individually formed, rubber plug recessed openings 3240 become smaller, and finally enclose the accommodating chamber 34 of pouch-shaped small for mouth and large for cavity, rubber plug
Recessed openings 3240 are the opening of accommodating chamber 34, play the similar effect with embodiment 1 etc..
Embodiment 9：
As shown in figure 15, as a kind of accommodation of core ideas of the present invention, accommodating chamber 34 is by 333 extension of pipe caping end
The accommodating chamber 34 of 334 pouch-shaped being enclosed with rubber plug recess 324, plays the similar effect with embodiment 1 etc..
Claims (16)
1. a kind of vacuum blood sampler, including：Tube body (31), rubber plug (32), pipe lid (33)；Tube body (31) top end opening (311),
Bottom end (312) is closed cecum, and tube body (31) top end opening (311) closing is made have vacuum degree by elastic rubber plug (32)
Tube cavity (310) is isolated with external fluid, and pipe lid (33) is sheathed on rubber plug (32), and pipe caping end (331) center is equipped with
Pipe cover gab (330)；It is characterized in that, further including the accommodating chamber (34) of pouch-shaped, accommodating chamber (34) is by pipe lid (33) top
(331) inner surface (332) the rubber plug recess (324) downward with rubber plug (32) top (321) upper surface (3211) collectively forms
Pouch-shaped cavity small for mouth and large for cavity；Pipe cover gab (330) is accommodating chamber (34) to outward opening, pipe cover gab (330) area
Less than rubber plug recess (324) opening (3240) area.
2. a kind of vacuum blood sampler according to claim 1, which is characterized in that pipe cover gab (330) is round or close
Like circle, top edge loop wire (3311) diameter or area of pipe cover gab (330) be more than lower edge loop wire (3312) diameter or
Area.
3. a kind of vacuum blood sampler according to claim 1, which is characterized in that paste on rubber plug (32) bottom end (322) periphery
Attached tube body (31) inner surface (313) extends downwardly, and constitutes rubber plug extension (323), rubber plug extension (323) inner cavity
(3230) it can accommodate and send blood needle tubing (21) through rubber plug receptacle portion (325)；Rubber plug extension (323) can play support, close
Envelope acts on, and inner surface (3231) flexible can accept by sending the blood ejected in blood needle tubing (21).
4. a kind of vacuum blood sampler according to claim 1, which is characterized in that rubber plug (32) bottom end (322) lower surface
(3221) ring week, thin-walled extended into shirt rim shape part (35) downwards, and shirt rim shape part (35) inner surface (351) of rubber plug (32) is
The shirt rim inner cavity (350) on boundary can be accommodated send blood needle tubing (21) through rubber plug receptacle portion (325)；It swims shirt rim shape part (35)
From end (353) towards tube body (31) bottom end (312).
5. a kind of vacuum blood sampler according to claim 1, which is characterized in that rubber plug (32) bottom end (322) lower surface
(3221) ring week, thin-walled extended into shirt rim shape part (35) downwards, and shirt rim shape part (35) inner surface (351) of rubber plug (32) is
The shirt rim inner cavity (350) on boundary can be accommodated send blood needle tubing (21) through rubber plug receptacle portion (325)；Shirt rim shape part (35) is outside
There are gap (36) between surface (352) and tube body (31) inner surface (313), are shirt rim external series gap (36)；Shirt rim external series gap
(36) when shirt rim shape part (35) inner surface (351) can be made to be impacted by blood flow shirt rim shape part (35) can deform upon outward and
Buffering.
6. according to a kind of vacuum blood sampler described in claim 4,5, which is characterized in that the shirt rim shape part of rubber plug (32)
(35) free-end (353) is equipped with wavy or jagged gap (3531).
7. according to a kind of vacuum blood sampler described in claim 4,5, which is characterized in that the shirt rim shape part of rubber plug (32)
(35) free-end (353) is equipped with wavy or jagged gap (3531)；It is additionally provided with along gap (3531) far from free-end
(353) shallow slot (3533) that part (3532) upwardly extends.
It further include one for puncturing adopting for skin and wall of vein 8. a kind of vacuum blood sampler according to claim 1
Blood needle tubing (11), one send blood taking needle tube socket (12) that blood-collecting needle tube (11) is fixed in it, one to blood needle tubing (21)；Send blood needle
Pipe (21) inner cavity (210) is connected directly or by delivery hose (13) inner cavity (130) with blood taking needle tube socket (12) inner cavity (120)
It is logical；Send blood needle tubing (21) is conformal to be outside arranged a gum cover (23), gum cover (23) will send blood needle tubing (21) to be isolated with external fluid；It is special
Sign is, further includes penetrating blood hose (24), penetrate blood hose (24) part be located at send blood needle tubing (21) inner cavity (210), a part
It is leant out out of pin hole (212) that send blood needle tubing (21) tip (211), penetrates the end (242) that blood hose (24) leans out part (241)
If there are one vertical openings (2411).
9. a kind of vacuum blood sampler according to claim 8, which is characterized in that further include penetrating blood hose (24), penetrate blood
Hose (24) part, which is located at, send blood needle tubing (21) inner cavity (210), a part of from the pin hole for sending blood needle tubing (21) tip (211)
(212) it is leant out in, penetrates blood hose (24) and lean out the end (242) of part (241) and set that there are one vertical openings (2411) and at least
One side opening (2412).
It further include one for puncturing adopting for skin and wall of vein 10. a kind of vacuum blood sampler according to claim 1
Blood needle tubing (11), one send blood taking needle tube socket (12) that blood-collecting needle tube is fixed in it, one to blood needle tubing (21)；Send blood needle tubing
(21) inner cavity (210) are connected directly or by delivery hose (13) inner cavity (130) with blood taking needle tube socket (12) inner cavity (120)；
Send blood needle tubing (21) is conformal to be outside arranged a gum cover (23), gum cover (23) will send blood needle tubing (21) to be isolated with external fluid；Its feature
Be, further include penetrating blood hose (24), penetrate blood hose (24) part and be located at and send blood needle tubing (21) inner cavity (210), a part from
It send in the pin hole (212) at blood needle tubing (21) tip (211) and leans out, penetrate blood hose (24) and lean out the end (242) of part (241) and be
Cecum, the end (242) for penetrating blood hose (24) are equipped at least one lateral openings (2412).
It further include one for puncturing adopting for skin and wall of vein 11. a kind of vacuum blood sampler according to claim 1
Blood needle tubing (11), one send blood taking needle tube socket (12) that blood-collecting needle tube is fixed in it, one to blood needle tubing (21)；Send blood needle tubing
(21) inner cavity (210) are connected directly or by delivery hose (13) inner cavity (130) with blood taking needle tube socket (12) inner cavity (120)；
Send blood needle tubing (21) is conformal to be outside arranged a gum cover (23), gum cover (23) will send blood needle tubing (21) to be isolated with external fluid；Its feature
It is, it is cecum to send blood needle tubing (21) tip (211), and the pin hole of blood outflow is lateral pin hole (213), lateral pin hole (213)
At least one.
12. a kind of vacuum blood sampler according to claim 11, which is characterized in that send blood needle tubing (21) tip (211)
Pin hole for cecum, blood outflow is lateral pin hole (213), and lateral pin hole (213) is at least one；Blood hose (24) is penetrated to be located at
It send in blood needle tubing (21) inner cavity (210), penetrates blood hose (24) and be equipped with lateral openings corresponding with lateral pin hole (213)
(2413)。
13. a kind of vacuum blood sampler according to claim 11, which is characterized in that send blood needle tubing (21) tip (211)
Pin hole for cecum, blood outflow is lateral pin hole (213), and lateral pin hole (213) is at least one；Blood hose (24) is penetrated to be located at
It send in blood needle tubing (21) inner cavity (210), penetrates blood hose (24) and be equipped with lateral openings corresponding with lateral pin hole (213)
(2413)；The area for penetrating the lateral openings (2413) of blood hose (24) is less than the area of lateral pin hole (213).
14. a kind of vacuum blood sampler according to claim 11, which is characterized in that send blood needle tubing (21) tip (211)
Pin hole for cecum, blood outflow is lateral pin hole (213), and lateral pin hole (213) is at least one；Send blood needle tubing seat (22) ring
The distance between shape boss (221) lower face (2211) and lateral pin hole (213) lower extreme point of farthest side (L1) are wanted less than right
Ask vacuum blood sampler (1) pipe lid (33) top (331) outer surface (333) described in 3 and rubber plug (32) extension (323)
The distance between lower edge (3232) (L2).
15. a kind of vacuum blood sampler according to claim 11, which is characterized in that send blood needle tubing (21) tip (211)
Pin hole for cecum, blood outflow is lateral pin hole (213), and lateral pin hole (213) is at least one；Send blood needle tubing seat (22) ring
The distance between shape boss (221) lower face (2211) and lateral pin hole (213) lower extreme point of farthest side (L1) are wanted less than right
Ask vacuum blood sampler (1) pipe lid (33) top (331) outer surface (333) described in 4 and rubber plug (32) shirt rim shape part
(35) the distance between free-end (353) (L3).
16. a kind of vacuum blood sampler according to claim 8, which is characterized in that blood needle tubing (21) tip (211) is sent to push up
Point (2111) is less than 2mm with gum cover (23) cecum (232) inner surface vertex (2321) air line distance (L5).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336431.3A CN108338794B (en) | 2018-04-16 | 2018-04-16 | Vacuum blood sampling device |
| PCT/CN2019/081274 WO2019201092A1 (en) | 2018-04-16 | 2019-04-03 | Vacuum blood drawing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810336431.3A CN108338794B (en) | 2018-04-16 | 2018-04-16 | Vacuum blood sampling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108338794A true CN108338794A (en) | 2018-07-31 |
| CN108338794B CN108338794B (en) | 2020-07-21 |
Family
ID=62955255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810336431.3A Active CN108338794B (en) | 2018-04-16 | 2018-04-16 | Vacuum blood sampling device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108338794B (en) |
| WO (1) | WO2019201092A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11389801B2 (en) * | 2020-02-03 | 2022-07-19 | Unicocell Biomed Co., Ltd. | Cell storage tube |
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| CN204016309U (en) * | 2014-07-24 | 2014-12-17 | 温州市高德医疗器械有限公司 | Novel evacuated blood taking tube |
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| CN208808492U (en) * | 2018-04-16 | 2019-05-03 | 北京仰生恒泰科技有限责任公司 | A kind of vacuum blood sampler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204698571U (en) * | 2015-04-08 | 2015-10-14 | 杭州富阳新锐生物科技有限公司 | A kind of medical blood taking pipe |
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2018
- 2018-04-16 CN CN201810336431.3A patent/CN108338794B/en active Active
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077086A2 (en) * | 1999-08-18 | 2001-02-21 | Becton Dickinson and Company | Stopper-shield assembly |
| CN202161321U (en) * | 2011-04-25 | 2012-03-14 | 江阴市鸿萌橡塑制品有限公司 | Sealing plug for tube opening of hemostix |
| CN202235402U (en) * | 2011-09-19 | 2012-05-30 | 杨馨艳 | Vacuum blood collection tube |
| CN204072111U (en) * | 2014-04-04 | 2015-01-07 | 张树重 | A kind of vacuum test tube preventing haemolysis |
| CN204016309U (en) * | 2014-07-24 | 2014-12-17 | 温州市高德医疗器械有限公司 | Novel evacuated blood taking tube |
| CN106880364A (en) * | 2015-12-16 | 2017-06-23 | 江苏康捷医疗器械有限公司 | The vacuum test tube of improved structure |
| CN206275692U (en) * | 2016-08-24 | 2017-06-27 | 昆明医科大学 | A kind of paediatrics blood taking needle |
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| US11389801B2 (en) * | 2020-02-03 | 2022-07-19 | Unicocell Biomed Co., Ltd. | Cell storage tube |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019201092A1 (en) | 2019-10-24 |
| CN108338794B (en) | 2020-07-21 |
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Effective date of registration: 20210729 Address after: 312500 building 4, No. 22, Xingmei Avenue, chengtan street, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: Zhejiang Baihuo Health Technology Co.,Ltd. Address before: 101113 Room 302, building 1, 8 Guangyuan East Street, Tongzhou District, Beijing Patentee before: BEIJING YANGSHENG HENGTAI TECHNOLOGY Co.,Ltd. |