CN202982016U - Automatic needle withdrawing integral type vacuum blood sampling device with needle tip protective sleeve - Google Patents
Automatic needle withdrawing integral type vacuum blood sampling device with needle tip protective sleeve Download PDFInfo
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- CN202982016U CN202982016U CN 201220553367 CN201220553367U CN202982016U CN 202982016 U CN202982016 U CN 202982016U CN 201220553367 CN201220553367 CN 201220553367 CN 201220553367 U CN201220553367 U CN 201220553367U CN 202982016 U CN202982016 U CN 202982016U
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Abstract
The utility model relates to a human body outer vacuum blood sampling instrument in clinical care, in particular to an automatic needle withdrawing integral type vacuum blood sampling device with a needle tip protective sleeve. The automatic needle withdrawing integral type vacuum blood sampling device comprises a puncture needle seat, a puncture needle tube, a flexible connecting pipe, a blood sampling needle tube and a blood sample collecting tube. The constitution key point is that the automatic needle withdrawing integral type vacuum blood sampling device further comprises a blood taking needle seat, the needle tip protective sleeve and an automatic needle withdrawing device. The automatic needle withdrawing integral type vacuum blood sampling device with the needle tip protective sleeve has the advantages that a two-body separation structure in the prior art is changed to be an integrated structure, the structure is simplified, operation is simple and convenient, due to the fact that a down-pressing blood taking needle seat can be used for enabling a needle tip of the blood sampling needle tube to penetrate through sealants, so that operation is simple and easy, the needle tip protective sleeve enables the puncture needle tube to be drawn back into the protective sleeve directly from a human body, the facts that the puncture needle tube not only can not pollute the environment but also can not injure medical staff or other personnel accidentally are guaranteed, and the automatic needle withdrawing device enables the operation to be simple and convenient.
Description
Technical field
This utility model relates in clinical treatment the outer vacuum blood collection apparatus of a kind of human body, particularly a kind of have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler.
Background technology
A kind of vacuum blood sampler of the prior art comprises blood taking needle 1 and blood sample collecting pipe 2 as shown in Figure 1 and Figure 2, and blood taking needle 1 one ends are vascular puncture needle tubings 11, and the other end is with gum cover blood-collecting needle tube 12, and is middle by 13 connections of PVC conduit.This device is first pulled out protective sleeve on the needle tubing of two when blood sampling, vascular puncture needle tubing 11 is thrust in sufferer arm vein, waits blood to enter in the blood sampling conduit, and the medical worker pushes down the needle handle of this vascular puncture needle tubing 11 immediately with little finger, in case the puncture needle tubing comes off; Because blood sample collecting pipe 2 seal rubber plugs are very thick, blood-collecting needle tube 12 pinpoint inclined plane angles are large, and needle point is blunt, add that blood-collecting needle tube 12 sealed rubber pipes elastic force when being subject to compressing axially is very large, therefore need both hands blood-collecting needle tube 12 could be thrust in the blood sample collecting pipe, operation is inconvenience quite.Owing to being negative pressure in blood sample collecting pipe 2, blood flows into the speed in this collecting pipe.To be collected to required sample amount, if need to gather the multitube blood sample, must bimanualness blood-collecting needle tube 12 could be extracted from collecting pipe 2.The outer soft rubber sleeve of blood-collecting needle tube 12 this moment restores, and encases blood-collecting needle tube, prevents that in conduit, blood flows out contaminated environment, and then the operation of the intubate before repeating; If do not need to draw blood again, must first extract puncture needle tubing 11 on human body, then pull out blood-collecting needle tube 12 on collecting pipe 2.This shows that this vacuum blood sampler is due to blood taking needle 1 and 2 minutes body structures of collecting pipe, blood collection procedure need be cared for two needle tubing of conduit 13 simultaneously, cause complicated operation loaded down with trivial details, a plurality of operating procedures even need both hands and also need impose certain and just right power just to complete extracting and inserting of needle tubing, and just can't care for the needle tubing of other end this moment, involves so again the co-operating that needs more than one medical personnel.The existence of the operating procedure that this complexity is loaded down with trivial details and two needle tubing, medical personnel's workload and psychological burden have virtually been increased, under the sight that the limb activity amplitude is large suffering from unconsciousness, restless, disoperative patient and infant patient, easily produce maloperation.And the exposed easy contaminated environment of puncture needle tubing 11 is also easily accidentally injured the medical worker and is caused serious blood contamination.Also must bring the not easy of operation and manually remove the pin process.
The utility model content
The purpose of this utility model is to overcome weak point of the prior art, and provide a kind of designs simplification, simple to operate easily, extract the unlikely contaminated environment of puncture needle tubing after human body, unlikely accidental injury medical worker have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler.
The purpose of this utility model realizes by following approach.
what have the needle point protective sleeve removes pin monoblock type vacuum blood sampler automatically, comprise Paracentesis needle holder, the puncture needle tubing, hose connector, blood-collecting needle tube and blood sample collecting pipe, it forms main points and is, also include a kind of blood sampling needle stand, a kind of needle point protective sleeve and a kind of needle device of automatically removing, the blood sampling needle stand has cylindrical cavity, the cylindrical cavity tail end is open, blood-collecting needle tube is fixed on its front bulkhead and extends rearward in cylindrical cavity, but blood sample collecting pipe pipe close front with plug mode be plugged on this cylindrical cavity, the length of cylindrical cavity is less than the length of blood sample collecting pipe, the afterbody that is plugged on the blood sample collecting pipe in cylindrical cavity is exposed outside cylindrical cavity, has gap A between blood sample collecting pipe front end face and cylindrical cavity front bulkhead, blood sample collecting pipe pipe close aft bulkhead has a sealant that can be pierced through by the blood-collecting needle tube rear end, this sealant thickness is less than the thickness of gap A, have in cylindrical cavity with blood sample collecting pipe pipe close suitable be connected structure, itself and blood sample collecting pipe pipe close are connected and form annexation than consolidation, the blood sample collecting pipe is packed into and takes out cylindrical cavity through constructing thus, vascular puncture needle tubing tube core, the hose connector tube core, the blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel, the rod shape cover that described needle point protective sleeve is a kind of hollow, its leading section has the inner chamber with puncture needle tubing coupling, the puncture needle tubing contains and is enclosed within this inner chamber and is plugged on Paracentesis needle holder, Paracentesis needle holder also is arranged in the inner chamber of needle point protective sleeve, the hose connector that stretches into from the protective sleeve follower head is connected with the tail end of Paracentesis needle holder, automatically remove needle device and comprise Compress Spring and braking element, Compress Spring contains and is contained in the protective sleeve inner chamber and is compressed between protective sleeve inner chamber front bulkhead and Paracentesis needle holder, be provided with a kind of breaker slot A on Paracentesis needle holder, be penetrated with a kind of breaker slot B on the protective sleeve sidewall corresponding with this breaker slot, braking element is arranged on the protective sleeve lateral wall, thereby its braking termination is passed this breaker slot B and is supported the braking of dashing forward in breaker slot A and live Paracentesis needle holder, Paracentesis needle holder and puncture needle tubing form a kind of slide unit that can relative protective sleeve retreats slip, after the releasing brake member, slide unit loses braking and slides backward under the driving of Compress Spring pretightning force, along with slide unit retreat the puncture needle tubing retract in the protective sleeve inner chamber until in the protective sleeve that submerges fully.
Like this, increase the blood sampling needle stand and in advance blood sample collecting pipe and blood sampling needle stand and blood-collecting needle tube linked together, making the whole blood-taking device structure that becomes one.The adaptive structure of above-mentioned cylindrical cavity and pipe close not only facilitates packing into of blood sample collecting pipe and takes out, be connected with blood sample collecting pipe pipe close again simultaneously and form annexation than consolidation, difficult drop-off is out when upright so conveniently to be inserted in blood sample collecting pipe in cylindrical cavity, provided again the insertion degree of the blood sample collecting pipe that is arranged on cylindrical cavity from sense of touch, thus convenient the installation.
During actual the use, at first the needle tubing that will puncture thrusts in human vas, be full of soft extension tube Deng blood, a hands little finger gently presses solidly decides the puncture needle tubing, and all the other four fingers pinch the blood sampling needle stand, because the pipe close sealant is thinner, another hands or touch the blood sample collecting pipe from the bottom or gently press the blood sampling needle stand from top, allow the blood-collecting needle tube needle point pass fluid sealant, enter in collecting pipe, until collecting pipe and cylindrical cavity front bulkhead touch and can't move onward again; Due to suction function in collecting pipe, blood flows in blood collection tube fast to the sample amount that requires, if need to gather the multitube blood sample, can pinch the blood sampling needle stand, easily withdraws from the blood sample collecting pipe, then inserts new collecting pipe blood sampling.After blood sampling finishes; first withdraw from human body end puncture needle tubing; but this moment the releasing brake member; under the driving of Compress Spring pretightning force; the puncture needle tubing retracts in the protective sleeve inner chamber; after this withdraw from again blood collection tube; due to the blood sampling needle stand than blood taking needle pipe range, therefore can guarantee that the blood-collecting needle tube needle point can not hurt the people, and in repeatedly changing the blood collection tube process; the blood sampling needle stand also plays the insertion guide effect; the blood sampling needle point can not sting the people, therefore play safety protection function, the sealing shroud resilience of taking a blood sample simultaneously is airtight; seal the blood taking needle tube head, avoided blood contamination.
This shows, it is discrete and be integrated structure that this utility model becomes two bodies of the prior art, and designs simplification and simple to operately easily press down the blood sampling needle stand and pass fluid sealant by the blood-collecting needle tube needle point owing to using makes operation more easily simple; And the intervention of needle point protective sleeve allows the puncture needle tubing be retracted into protective sleeve from human body after directly, has guaranteed that the puncture needle tubing neither pollutes the environment also can not accidentally injure medical worker or other staff; Automatically remove the intervention of needle device, make operation more simple and convenient.
The purpose of this utility model can also realize by following approach.
About automatically removing the further optimization of needle device:
Braking element is a kind of lever, and braking termination and operating side lays respectively at the two ends of balance pivot, and the corresponding section of protective sleeve lateral wall is provided with a kind of twisted branch seat, and the balance pivot twisted branch is on this twisted branch seat.
Like this, lower lever is released and lifts by the operating side, and braking element is released, and Compress Spring is released.
Also include a kind of torsion spring, it is arranged on hinged-support, and torsion spring pretightning force direction and lever discharge the opposite direction that lifts.
In order not make retreating of slide unit unlikely too fast and rough, pretightning force that should the reduce Compress Spring, yet too low pretightning force can cause again the latching force of braking element inadequate, therefore increase the latching force that torsion spring improves braking element, also make simultaneously to discharge the damping increase of lifting, operating handle is better.
The braking element operating side is provided with a kind of arc chain-wales corresponding with finger face shape.
Can increase sense of touch and operation comfort like this.
Further optimization about protective sleeve and Paracentesis needle holder is:
The protective sleeve inner chamber is comprised of leading portion core hole and back segment core hole; leading portion core hole and back segment core hole are run through but decentered distribution both; extend in back segment core hole after the puncture needle tubing is socketed with leading portion core hole coupling and be plugged in the core hole of Paracentesis needle holder; Paracentesis needle holder and the coupling socket of back segment core hole, the hose connector tube core is communicated with the tube core of the needle tubing that punctures by the core hole of Paracentesis needle holder.
Allow Paracentesis needle holder and the hole sliding connection of back segment core, can increase the stability that Paracentesis needle holder slides in the protective sleeve inner chamber, produce simultaneously suitable slip damping.
Paracentesis needle holder is comprised of leading portion, stage casing and back segment; wherein leading portion and the coaxial distribution of back segment; but relative back segment decentered distribution; the core hole is along extending continuously in leading portion, stage casing and back segment inner chamber and running through front and rear sections; puncture needle tubing and hose connector correspondence respectively are plugged on front and rear sections; stage casing and the hole coupling socket of protective sleeve back segment core, on the stage casing periphery wall corresponding with breaker slot B, indent forms breaker slot A.
Further optimization about cylindrical cavity and pipe close is:
When cylindrical cavity and pipe close both are in adaptive connection status, before the blood-collecting needle tube rear end just is in sealant to be pierced through.
Be convenient to like this hold the pre-insertion degree of blood-collecting needle tube on the sense of touch of inserting.
This adaptive connection structure has multiple choices, inside contracts the size mode of rear interference fits such as cylinder intracavity footpath, following a kind of be a kind of optimized choice:
The structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity.
It can be a kind of short arc convex clamping point that this elastic card touches structure, and perhaps this short arc convex clamping point or blood sample collecting pipe pipe close are made by elastomeric material.
This elastic card touches the urgent connection status of elasticity that structure can cause cylindrical cavity inwall and pipe close, but when applying axial force, the blood sample collecting pipe still relatively cylindrical cavity do freely before push away or retreat.
This short arc convex clamping point is as the term suggests be exactly a kind of prominent protruding salient point on the cylindrical cavity inwall, and thickness hangs down shallow and the front and back side all has arc-shaped transition, so that creeping of pipe close passed through.
Can also touch the adaptive connection structure that increases separately other on the basis of constructing at this elastic card and be used in conjunction with to reach better result of use, be below being used in conjunction with of wherein a kind of optimization:
the structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity, another kind of suitable structure is to be produced on the L shaped groove on the pipe close outer peripheral face and to be produced on prominent salient point on the cylindrical cavity inwall, should vertically enter L shaped groove and can slide therein in the termination of section from the L shaped groove that is positioned at the pipe close front end face by prominent salient point, when cylindrical cavity inwall and pipe close elastic card touch, should prominent salient point have entered in vertical section in L shaped groove but not yet arrived this vertically bottom of section, before blood-collecting needle tube this moment rear end just is in sealant to be pierced through, when sinciput blood sample collecting pipe to blood-collecting needle tube puncture through seal layer, should just arrive this vertically bottom of section by prominent salient point, rotate the blood sample collecting pipe this moment, the salient point of should dashing forward enters the cross break section in L shaped groove.
Like this, the cross break section in L shaped groove can locked blood sample collecting pipe degree of freedom in the axial direction, make its relative syringe can not before push away and can not retreat.
The blood sample collecting pipe can also be connected with cylindrical cavity by this way:
The blood sample collecting pipe is threaded in cylindrical cavity, and suitable structure is a kind of structure that is threaded.
Blood sample collecting pipe pipe close is comprised of seal rubber plug and over cap, and fluid sealant plug sleeve plug is in the collecting pipe tube chamber, and the over cap capping plug is on the collecting pipe mouth of pipe and seal rubber plug.
With the suitable structure operated by rotary motion of cylindrical cavity on over cap.
Blood-collecting needle tube is coated with the blood sampling sealing shroud, and blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant, and this core hole internal diameter is slightly larger than blood sampling sealing shroud external diameter.
Like this, when the blood taking needle pipe racks penetrated pipe close with the blood sampling sealing shroud along this core hole, the blood sampling sealing shroud was subject to axial compression compression radial distorted dilatating and deformable, core hole inner hole wall extrusion friction therewith just in time, and the more unlikely blood-collecting needle tube that allows is deviate from seal rubber plug.
Blood sample collecting pipe pipe close sealant thickness is 3-0.5MM, preferably 1.5-0.5MM.
Blood-collecting needle tube can easily be worn out sealant like this.
The blood sampling needle stand with blood sample collecting pipe pipe close in be contained on position suitable in cylindrical cavity along the blood sampling needle stand and axially be provided with a kind of rectangular groove as operation window, this operation window has two, relatively is distributed in the both sides of cylindrical cavity.
Can observe blood back by this operation window like this, observe the state of blood volume in the blood sample collecting pipe, also the insertion state of observable blood sample collecting pipe and insertion degree, also can be when extracting the blood sample collecting pipe, first see through this operation window and grip pipe close and firmly withdraw from backward the blood sample collecting pipe, thus the disengaging of collecting pipe body and pipe close when preventing from withdrawing from the blood sample collecting pipe.
In sum, this utility model has following advantage compared to existing technology: it is discrete and be integrated structure that this utility model becomes two bodies of the prior art, designs simplification and simple to operate easy, press down the blood sampling needle stand and pass fluid sealant by the blood-collecting needle tube needle point owing to using, make operation more simple easily; And the intervention of needle point protective sleeve allows the puncture needle tubing be retracted into protective sleeve from human body after directly, has guaranteed that the puncture needle tubing neither pollutes the environment also can not accidentally injure medical worker or other staff.Automatically remove the intervention of needle device, make operation more simple and convenient.
Description of drawings
Fig. 1 is that in prior art, a kind of vacuum test tube device blood sample collecting pipe inserts view.
Fig. 2 is that in prior art, a kind of vacuum test tube device blood sample collecting pipe is withdrawn from view.
Fig. 3 is the outward appearance signal left view of automatically removing pin monoblock type vacuum blood sampler with needle point protective sleeve described in the utility model.
Fig. 4 is the structural representation front view of automatically removing pin monoblock type vacuum blood sampler with needle point protective sleeve described in the utility model.
Fig. 5 is that the pin monoblock type vacuum blood sampler blood-collecting needle tube of automatically removing with needle point protective sleeve described in the utility model inserts view.
Fig. 6 is that the pin monoblock type vacuum blood sampler blood-collecting needle tube of automatically removing with needle point protective sleeve described in the utility model is withdrawn from view.
Fig. 7 is the structural representation front view of blood sampling needle stand in this utility model embodiment one.
Fig. 8 is the structural representation top view of blood sampling needle stand in this utility model embodiment one.
Fig. 9 is the structural representation of blood sample collecting pipe in this utility model embodiment one.
Figure 10 is the structural representation of puncture needle assembly under the puncture state in this utility model embodiment.
Figure 11 be in this utility model embodiment the puncture needle assembly at the structural representation of withdrawing under state.
Figure 12 is protective sleeve rear section structure schematic diagram in this utility model embodiment.
Figure 13 is protective sleeve rear section structure schematic isometric in this utility model embodiment.
Figure 14 is Paracentesis needle holder structural representation in this utility model embodiment.
Figure 15 is Paracentesis needle holder structural representation axonometric chart in this utility model embodiment.
Figure 16 is braking element structural representation in this utility model embodiment.
Figure 17 is braking element structural representation axonometric chart in this utility model embodiment.
Figure 18 is the structural representation axonometric chart of blood sample collecting pipe over cap in this utility model most preferred embodiment.
Label declaration:
The 11 puncture needle tubing 12 blood-collecting needle tube 13 hose connector 14 blood sampling sealing shroud 2 blood sample collecting pipe 21 sealant 22 over cap 23 seal rubber plug 24 vertical section of a core hole 24L shape groove 26L shape groove cross break section 3 blood sampling needle stand 31 cylindrical cavity 32 operation window 33 short arc convex clamping point 4 Paracentesis needle holders
41 breaker slot A 5 needle point protective sleeve 51 breaker slot B 52 twisted branch seats 6 are automatically removed needle device 61 braking element 62 Compress Springs 611 and are braked the termination
612 operating sides
The specific embodiment
Below in conjunction with accompanying drawing, this utility model is carried out more detailed description.
Embodiment one:
With reference to Fig. 3, Fig. 4; what have the needle point protective sleeve removes pin monoblock type vacuum blood sampler automatically, comprises Paracentesis needle holder 4, puncture needle tubing 11, hose connector 13, blood-collecting needle tube 12, blood sample collecting pipe 2, blood sampling needle stand 3, needle point protective sleeve 5 and a kind of needle device 6 of automatically removing.blood sampling needle stand 3 has cylindrical cavity 31, the cylindrical cavity tail end is open, blood-collecting needle tube 12 is fixed on its front bulkhead and extends rearward in cylindrical cavity 31, but blood sample collecting pipe 2 pipe closes front with plug mode be plugged on this cylindrical cavity 31, the length of cylindrical cavity 31 is less than the length of blood sample collecting pipe 2, the afterbody that is plugged on the blood sample collecting pipe 2 in cylindrical cavity is exposed outside cylindrical cavity 31, has gap A between blood sample collecting pipe 2 front end faces and cylindrical cavity 31 front bulkheads, blood sample collecting pipe 2 pipe close aft bulkheads have a sealant 21 that can be pierced through by blood-collecting needle tube 12 rear ends, these sealant 21 thickness are less than the thickness of gap A, have the structure suitable with blood sample collecting pipe 2 pipe closes in cylindrical cavity 31, vascular puncture needle tubing 11 tube cores, Paracentesis needle holder 4 core holes, hose connector 13 tube cores, blood-collecting needle tube 12 tube cores and be pierced sealant 21 after blood sample collecting pipe 2 tube chambers form a kind of blood channels.
With reference to Fig. 9, blood sample collecting pipe 2 pipe closes are comprised of seal rubber plug 23 and over cap 22, and seal rubber plug 23 cover plugs are in the collecting pipe tube chamber, and over cap 22 capping plugs are on the collecting pipe mouth of pipe and seal rubber plug 23.Aforementioned blood sample collecting pipe 2 front end faces are the over cap front end face.The sealant 21 of aforementioned blood sample collecting pipe 2 pipe close aft bulkheads is positioned on seal rubber plug.Sealant thickness is 1.0MM.
With reference to Fig. 7, Fig. 8, cylindrical cavity 31 structure interior and that pipe close is suitable is a kind of two structures that touch along the circumferential symmetrical elastic card of the inwall of cylindrical cavity.It is a kind of short arc convex clamping point 33 that this elastic card touches structure, and this short arc convex clamping point 33 is made by elastomeric material.When the protective sleeve 22 of blood sample collecting pipe 2 when short arc convex clamping point 33 cards touch therewith, before blood-collecting needle tube 12 rear ends just are in sealant to be pierced through 21.
With reference to Fig. 7, Fig. 8, blood sampling needle stand 3 with blood sample collecting pipe 2 pipe closes in be contained on cylindrical cavity 31 interior suitable position and axially be provided with a kind of rectangular groove as operation window 32 along blood sampling needle stand 3, this operation window 32 has two, relatively is distributed in the both sides of cylindrical cavity 31.This operation window 32 distributes with above-mentioned short arc convex clamping point 33 dislocation 90 degree.
With reference to Fig. 5, Fig. 6, blood-collecting needle tube 12 is coated with blood sampling sealing shroud 14, and blood sample collecting pipe pipe close center is provided with the core hole 24 that extends axially to sealant 21, and this core hole 24 internal diameters are slightly larger than blood sampling sealing shroud 14 external diameters.Like this, along this core hole 24 when penetrating pipe close, blood sampling sealing shroud 14 is subject to axial compression compression radial distorted dilatating and deformable to blood-collecting needle tube 12 band with blood sampling sealing shrouds 14, core hole 24 inner hole wall extrusion frictions therewith just in time, and the more unlikely blood-collecting needle tube that allows is deviate from seal rubber plug.
With reference to Figure 10, Figure 11, Figure 12, Figure 13, Figure 14, Figure 15, Figure 16, Figure 17, the puncture needle assembly is by puncture needle tubing 11, Paracentesis needle holder 4, needle point protective sleeve 5 and automatically remove needle device 6 and form.Needle point protective sleeve 5 is rod shape covers of a kind of hollow; protective sleeve 5 is by leading portion and back segment is affixed forms; protective sleeve 5 inner chambers are comprised of leading portion core hole and back segment core hole; leading portion core hole and back segment core hole are run through but decentered distribution both, extend in back segment core hole after puncture needle tubing 11 and the hole coupling socket of leading portion core and are plugged in the core hole of Paracentesis needle holder 4.Paracentesis needle holder 4 also is arranged in the inner chamber of needle point protective sleeve 5, and the hose connector 13 that stretches into from protective sleeve 5 follower heads is connected with the tail end of Paracentesis needle holder 4.Paracentesis needle holder 4 is comprised of leading portion, stage casing and back segment; wherein leading portion and the coaxial distribution of back segment; but relative back segment decentered distribution; the core hole is along extending continuously in leading portion, stage casing and back segment inner chamber and running through front and rear sections; puncture needle tubing and hose connector correspondence respectively are plugged on front and rear sections; stage casing and protective sleeve 5 back segment core hole coupling sockets, on the stage casing periphery wall corresponding with breaker slot B51, indent forms breaker slot A41.Automatically remove needle device and comprise Compress Spring 61, braking element 62 and torsion spring; Compress Spring 62 contains and is contained in protective sleeve 5 inner chambers and is compressed between protective sleeve inner chamber front bulkhead and Paracentesis needle holder 4; be penetrated with a kind of breaker slot B on protective sleeve 5 sidewalls corresponding with breaker slot A; braking element 62 is arranged on protective sleeve 5 lateral walls; braking element is 62 to be a kind of levers; braking termination 611 and operating side 612 lay respectively at the two ends of balance pivot, and operating side 612 is provided with a kind of arc chain-wales corresponding with finger face shape.The corresponding section of protective sleeve 5 lateral walls is provided with a kind of twisted branch seat 52, and the balance pivot twisted branch is on this twisted branch seat 52, and torsion spring (not shown in FIG.) is arranged on hinged-support 52, and torsion spring pretightning force direction and lever discharge the opposite direction that lifts.Thereby braking termination 611 is passed this breaker slot B51 and is braked Paracentesis needle holder 4 to dashing forward in breaker slot A41; Paracentesis needle holder 4 and puncture needle tubing 11 form a kind of slide unit that can relative protective sleeve 5 retreats slip; the rear slide unit of releasing brake member 62 lose the braking and slide backward under the driving of Compress Spring 61 pretightning forces, along with slide unit retreat the puncture needle tubing 11 retract in protective sleeve 5 inner chambers until in the protective sleeve 5 that submerges fully.
During actual the use, at first the needle tubing 11 that will puncture thrusts in human vas, be full of soft extension tube Deng blood, a hands little finger gently presses solidly decides puncture needle tubing 11, all the other four fingers pinch blood sampling needle stand 3, and because pipe close sealant 21 is thinner, the another hands touches blood sample collecting pipe 2 from the bottom, allow blood-collecting needle tube 12 needle points pass sealant 21 and enter in collecting pipe, until collecting pipe and cylindrical cavity 31 front bulkheads touch and can't move onward again; Due to suction function in collecting pipe, blood flows in blood collection tube 2 fast to the sample amount that requires, if need to gather the multitube blood sample, can pinch blood sampling needle stand 3, and see through operation window 32 and pinch blood sample collecting pipe 2 it is easily withdrawed from, then insert new collecting pipe blood sampling.After blood sampling finishes, first withdraw from human body end puncture needle tubing 11, this is at present by operating side 612, lever is released and lifts, braking element is released, and Compress Spring is released, along with slide unit retreat the puncture needle tubing 11 retract in protective sleeve 5 inner chambers until in the protective sleeve 5 that submerges fully; Withdraw from again blood collection tube 2, because blood sampling needle stand 3 is longer than blood-collecting needle tube 12, therefore can guarantee that blood-collecting needle tube 12 needle points can not hurt the people, and in repeatedly changing the blood collection tube process, blood sampling needle stand 3 also plays the insertion guide effect, and the blood sampling needle point can not sting the people, therefore play safety protection function, sealing shroud 14 resiliences of taking a blood sample simultaneously are airtight, seal 12 of blood-collecting needle tubes, avoided blood contamination.
It is same as the prior art that the present embodiment is not stated part.
Most preferred embodiment:
With reference to Figure 18, the structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity, it is a kind of short arc convex clamping point that this elastic card touches structure, and this short arc convex clamping point and blood sample collecting pipe pipe close are made by elastomeric material.another kind of suitable structure is to be produced on the L shaped groove on pipe close over cap 22 outer peripheral faces and to be produced on prominent salient point on the cylindrical cavity inwall, should vertically enter L shaped groove and can slide therein in the termination of section 25 from the L shaped groove that is positioned at the pipe close front end face by prominent salient point, when cylindrical cavity inwall and pipe close over cap elastic card touch, should prominent salient point have entered in vertical section 25 in L shaped groove but not yet arrived this vertically bottom of section 25, before blood-collecting needle tube this moment 12 rear ends just are in sealant to be pierced through 21, when sinciput blood sample collecting pipe 2 to blood-collecting needle tube 12 puncture through seal layers 21, should just arrive this vertically bottom of section 25 by prominent salient point, rotate blood sample collecting pipe 2 this moment, the salient point of should dashing forward enters the cross break section 26 in L shaped groove.Like this, the cross break section 26 in L shaped groove with should prominent salient point coordinate can locked blood sample collecting pipe 2 degree of freedom in the axial direction, make its relatively blood sampling needle stand 3 can not before push away and can not retreat.
It is identical with embodiment one that the present embodiment is not stated part.
Claims (14)
1. what have the needle point protective sleeve removes pin monoblock type vacuum blood sampler automatically, comprise Paracentesis needle holder, the puncture needle tubing, hose connector, blood-collecting needle tube and blood sample collecting pipe, it is characterized in that, also include a kind of blood sampling needle stand, a kind of needle point protective sleeve and a kind of needle device of automatically removing, the blood sampling needle stand has cylindrical cavity, the cylindrical cavity tail end is open, blood-collecting needle tube is fixed on its front bulkhead and extends rearward in cylindrical cavity, but blood sample collecting pipe pipe close front with plug mode be plugged on this cylindrical cavity, the length of cylindrical cavity is less than the length of blood sample collecting pipe, the afterbody that is plugged on the blood sample collecting pipe in cylindrical cavity is exposed outside cylindrical cavity, has gap A between blood sample collecting pipe front end face and cylindrical cavity front bulkhead, blood sample collecting pipe pipe close aft bulkhead has a sealant that can be pierced through by the blood-collecting needle tube rear end, this sealant thickness is less than the thickness of gap A,
have in cylindrical cavity with blood sample collecting pipe pipe close suitable be connected structure, itself and blood sample collecting pipe pipe close are connected and form annexation than consolidation, the blood sample collecting pipe is packed into and takes out cylindrical cavity through constructing thus, vascular puncture needle tubing tube core, the hose connector tube core, the blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel, the rod shape cover that described needle point protective sleeve is a kind of hollow, its leading section has the inner chamber with puncture needle tubing coupling, the puncture needle tubing contains and is enclosed within this inner chamber and is plugged on Paracentesis needle holder, Paracentesis needle holder also is arranged in the inner chamber of needle point protective sleeve, the hose connector that stretches into from the protective sleeve follower head is connected with the tail end of Paracentesis needle holder, automatically remove needle device and comprise Compress Spring and braking element, Compress Spring contains and is contained in the protective sleeve inner chamber and is compressed between protective sleeve inner chamber front bulkhead and Paracentesis needle holder,
be provided with a kind of breaker slot A on Paracentesis needle holder, be penetrated with a kind of breaker slot B on the protective sleeve sidewall corresponding with this breaker slot, braking element is arranged on the protective sleeve lateral wall, thereby its braking termination is passed this breaker slot B and is supported the braking of dashing forward in breaker slot A and live Paracentesis needle holder, Paracentesis needle holder and puncture needle tubing form a kind of slide unit that can relative protective sleeve retreats slip, after the releasing brake member, slide unit loses braking and slides backward under the driving of Compress Spring pretightning force, along with slide unit retreat the puncture needle tubing retract in the protective sleeve inner chamber until in the protective sleeve that submerges fully.
According to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; braking element is a kind of lever; braking termination and operating side lay respectively at the two ends of balance pivot; the corresponding section of protective sleeve lateral wall is provided with a kind of twisted branch seat, and the balance pivot twisted branch is on this twisted branch seat.
According to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; braking element is a kind of lever; braking termination and operating side lay respectively at the two ends of balance pivot; the corresponding section of protective sleeve lateral wall is provided with a kind of twisted branch seat, and the balance pivot twisted branch also includes a kind of torsion spring on this twisted branch seat; it is arranged on hinged-support, and torsion spring pretightning force direction and lever discharge the opposite direction that lifts.
According to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; the protective sleeve inner chamber is comprised of leading portion core hole and back segment core hole; leading portion core hole and back segment core hole are run through but decentered distribution both; extend in back segment core hole after the puncture needle tubing is socketed with leading portion core hole coupling and be plugged in the core hole of Paracentesis needle holder; Paracentesis needle holder and the coupling socket of back segment core hole, the hose connector tube core is communicated with the tube core of the needle tubing that punctures by the core hole of Paracentesis needle holder.
According to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; Paracentesis needle holder is comprised of leading portion, stage casing and back segment; wherein leading portion and the coaxial distribution of back segment; but relative back segment decentered distribution; the core hole is along extending continuously in leading portion, stage casing and back segment inner chamber and running through front and rear sections; puncture needle tubing and hose connector correspondence respectively are plugged on front and rear sections; stage casing and the hole coupling socket of protective sleeve back segment core, on the stage casing periphery wall corresponding with breaker slot B, indent forms breaker slot A.
According to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler, it is characterized in that, when cylindrical cavity and pipe close both are in adaptive connection status, before the blood-collecting needle tube rear end just is in sealant to be pierced through.
According to claim 7 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that, cylindrical cavity structure interior and that pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity.
According to claim 7 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; it can be a kind of short arc convex clamping point that this elastic card touches structure, and perhaps this short arc convex clamping point or blood sample collecting pipe pipe close are made by elastomeric material.
according to claim 7 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler, it is characterized in that, a kind ofly to be produced on the L shaped groove on the pipe close outer peripheral face and to be produced on prominent salient point on the cylindrical cavity inwall with the suitable structure of pipe close in cylindrical cavity, should vertically enter L shaped groove and can slide therein in the termination of section from the L shaped groove that is positioned at the pipe close front end face by prominent salient point, when cylindrical cavity inwall and pipe close elastic card touch, should prominent salient point have entered in vertical section in L shaped groove but not yet arrived this vertically bottom of section, before blood-collecting needle tube this moment rear end just is in sealant to be pierced through, when sinciput blood sample collecting pipe to blood-collecting needle tube puncture through seal layer, should just arrive this vertically bottom of section by prominent salient point, rotate the blood sample collecting pipe this moment, the salient point of should dashing forward enters the cross break section in L shaped groove.
According to claim 7 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler, it is characterized in that, suitable structure is a kind of structure that is threaded, the blood sample collecting pipe is threaded in cylindrical cavity.
11. according to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; blood sample collecting pipe pipe close is comprised of seal rubber plug and over cap; fluid sealant plug sleeve plug is in the collecting pipe tube chamber; the over cap capping plug on the collecting pipe mouth of pipe and seal rubber plug, with the suitable structure installation of cylindrical cavity on over cap.
12. according to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; blood-collecting needle tube is coated with the blood sampling sealing shroud; blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant, and this core hole internal diameter ratio blood sampling sealing shroud external diameter is slightly large.
13. according to claim 1 or 12 described have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler, it is characterized in that, blood sample collecting pipe pipe close sealant thickness is 1.5-0.5MM.
14. according to claim 1 have a needle point protective sleeve automatically remove pin monoblock type vacuum blood sampler; it is characterized in that; the blood sampling needle stand with blood sample collecting pipe pipe close in be contained on position suitable in cylindrical cavity along the blood sampling needle stand and axially be provided with a kind of rectangular groove as operation window; this operation window has two, relatively is distributed in the both sides of cylindrical cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553367 CN202982016U (en) | 2012-10-26 | 2012-10-26 | Automatic needle withdrawing integral type vacuum blood sampling device with needle tip protective sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220553367 CN202982016U (en) | 2012-10-26 | 2012-10-26 | Automatic needle withdrawing integral type vacuum blood sampling device with needle tip protective sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202982016U true CN202982016U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220553367 Expired - Lifetime CN202982016U (en) | 2012-10-26 | 2012-10-26 | Automatic needle withdrawing integral type vacuum blood sampling device with needle tip protective sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202982016U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470435A (en) * | 2012-10-26 | 2015-03-25 | 张建铭 | Automatic needle withdrawing integral vacuum blood sampling apparatus with needle tip protective sleeve |
| CN105596013A (en) * | 2016-02-06 | 2016-05-25 | 湛江健力源医疗用品有限公司 | Shrinkage safety blood collecting needle |
| CN106175794A (en) * | 2016-07-06 | 2016-12-07 | 山东大学第二医院 | The blood internal medicine blood collection device that needle body is deviate from can be prevented |
| CN109124654A (en) * | 2018-10-24 | 2019-01-04 | 山东亨洁医用包装科技有限公司 | A kind of vacuum blood collection tube |
-
2012
- 2012-10-26 CN CN 201220553367 patent/CN202982016U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470435A (en) * | 2012-10-26 | 2015-03-25 | 张建铭 | Automatic needle withdrawing integral vacuum blood sampling apparatus with needle tip protective sleeve |
| CN104470435B (en) * | 2012-10-26 | 2016-09-14 | 张建铭 | Have needle tip protection sleeve removes pin monoblock type vacuum blood sampler automatically |
| CN105596013A (en) * | 2016-02-06 | 2016-05-25 | 湛江健力源医疗用品有限公司 | Shrinkage safety blood collecting needle |
| CN106175794A (en) * | 2016-07-06 | 2016-12-07 | 山东大学第二医院 | The blood internal medicine blood collection device that needle body is deviate from can be prevented |
| CN109124654A (en) * | 2018-10-24 | 2019-01-04 | 山东亨洁医用包装科技有限公司 | A kind of vacuum blood collection tube |
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