CN202982015U - Integral type vacuum blood sampling device with needle tip protective sleeve - Google Patents

Abstract

The utility model relates to a human body outer vacuum blood sampling instrument in clinical care, in particular to an integral type vacuum blood sampling device with a needle tip protective sleeve. The integral type vacuum blood sampling device comprises a puncture needle tube with an operating handle and the like in an attached mode, a flexible connecting pipe, a blood sampling needle tube and a blood sample collecting tube. The constitution key point is that the integral type vacuum blood sampling device further comprises a blood taking needle seat and the needle tip protective sleeve. The 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, and 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.

Description

Monoblock type vacuum blood sampler with needle point protective sleeve

Technical field

This utility model relates to outer vacuum blood collection apparatus, particularly a kind of monoblock type vacuum blood sampler with needle point protective sleeve of a kind of human body in clinical treatment.

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.

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's the monoblock type vacuum blood sampler with needle point protective sleeve.

The purpose of this utility model realizes by following approach.

monoblock type vacuum blood sampler with needle point protective sleeve, comprise the puncture needle tubing that is accompanied with operating grip etc., 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 and a kind of needle point protective sleeve, 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, needle point protective sleeve rearward end inner chamber contains and is overlapping the hose connector that stretches into from termination thereafter, extend axially a kind of tail end on this protective sleeve sidewall and be provided with the sliding tray that retreats obstacle, the puncture needle tubing is connected with hose connector, operating grip is connected and dashes forward with the puncture needle tubing and passes this sliding tray and be exposed at outside protective sleeve, puncture needle tubing and operating grip form the slide unit that a kind of protective sleeve relatively retreats slip, 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; this moment, but the pusher operating grip retracted in the protective sleeve inner chamber puncture needle tubing; 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.

The purpose of this utility model can also realize by following approach.

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.

The sliding tray tail end retreats obstacle and can stop the puncture needle tubing of recession to pass protective sleeve.This obstacle that retreats can be a kind of prominent protruding stuck point at the sliding tray tail end, can be also the sealing of sliding tray tail end.

Also include a kind of non-return device, this non-return device is arranged between slide unit and protective sleeve, is retracted into slide unit in the protective sleeve inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

Like this, because of the prevention of non-return device, retreat the slide unit that puts in place can not before push away.Thereby both having guaranteed that the puncture needle tubing that retreats can not passed out again hurts sb.'s feelings, and also can impel the disposable use of this vacuum blood collector described in the utility model.

Common in this non-return device aciculiform medical apparatus and instruments in the prior art, mostly can be applied in this utility model.This utility model provides the non-return device of two kinds of optimizations at this:

This non-return device is the symmetrical closed tongue piece of a kind of elasticity; be arranged in protective sleeve front end inner chamber; this two closed tongue piece all tilts and forms a kind of tubaeform; horn mouth forward; loudspeaker tail serrated end backwards is comprised of the closed joint portion of closed tongue piece, and puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and affixed with operating grip through serrated end thus backward from horn mouth.

Like this, puncture is after needle tubing removes, and the tongue piece elastic reset forms the state on needle tip and serrated end pinnacle, blocks former puncture needle tubing and exports.

This non-return device is comprised of Elastic buckle and pit, and Elastic buckle is positioned on protective sleeve, and pit is positioned on slide unit, retreat its pit of slide unit of putting in place just with the Elastic buckle clamping, thereby push away before stoping the needle tubing that punctures.

This Elastic buckle is comprised of the buckle on elastic suspended tongue and outstanding tongue top; empty along the interval parallel with sliding tray near protective sleeve sliding tray tail end and allow this empty at sliding tray tail end and sliding tray " U " shape and even wear; this " U " shape central authorities namely form an elastic suspended tongue; buckle is arranged in this elastic suspended tongue top and prominent protruding in sliding tray; pit is positioned at the root of operating grip, and operating grip is connected with the puncture needle tubing by this root.

Retreat the operating grip that puts in place along sliding tray, the buckle clamping just therewith of its pit.

Have two sliding trays and be symmetrically distributed in protective sleeve both sides, and have two operating grips respectively correspondence run through sliding tray and all be connected with the needle tubing that punctures.

Operating grip is a kind of ear shape of pinching, and pinches ear and forms a kind of two ear operating grip of pinching for two that jointly are connected with the puncture needle tubing.

This two mode that the ear operating grip provides another kind of convenient operation of pinching.

Also include Paracentesis needle holder, Paracentesis needle holder is positioned at protective sleeve, and puncture needle tubing tail end is plugged on this Paracentesis needle holder, and Paracentesis needle holder is connected with operating grip by the root of operating grip.

Paracentesis needle holder hollow, the puncture needle tubing is plugged in Paracentesis needle holder leading portion core chamber, and the Paracentesis needle holder rear end is provided with a kind of termination that is connected with hose connector, and the hose connector tube core passes through Paracentesis needle holder core chamber and is communicated with the needle tubing tube core that punctures.

Further improvement about Paracentesis needle holder is:

Paracentesis needle holder and operating grip Construction integration.

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.

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 schematic front view that has the monoblock type vacuum blood sampler of needle point protective sleeve in embodiment one.

Fig. 4 is the structural representation left view that has the monoblock type vacuum blood sampler of needle point protective sleeve in embodiment one.

Fig. 5 is that the monoblock type vacuum blood sampler blood-collecting needle tube that has the needle point protective sleeve in this utility model embodiment one inserts view.

Fig. 6 is that the monoblock type vacuum blood sampler blood-collecting needle tube that has the needle point protective sleeve in this utility model embodiment one is withdrawn from view.

Fig. 7 is the structural representation front view of this utility model blood sampling needle stand.

Fig. 8 is the structural representation top view of this utility model blood sampling needle stand.

Fig. 9 is the structural representation of this utility model blood sample collecting pipe.

Figure 10 be in this utility model embodiment one the puncture needle assembly at the cutaway view Amplified image of withdrawing under state.

Figure 11 be in this utility model embodiment one the puncture needle assembly at the outward appearance enlarged drawing of withdrawing under state.

Figure 12 be in this utility model embodiment one after protective sleeve the cylinder schematic perspective view.

Figure 13 is Paracentesis needle holder and operating grip structural representation front view in this utility model embodiment one.

Figure 14 is Paracentesis needle holder and operating grip structural representation left view in this utility model embodiment one.

Figure 15 is the cross-sectional schematic of piercing assembly under the puncture state in this utility model most preferred embodiment.

Figure 16 be in this utility model most preferred embodiment piercing assembly in the cross-sectional schematic of withdrawing under state.

Figure 17 be in this utility model most preferred embodiment after protective sleeve the cylinder schematic perspective view.

Figure 18 is Paracentesis needle holder and operating grip structural representation front view in this utility model most preferred embodiment.

Figure 19 is Paracentesis needle holder and operating grip structural representation left view in this utility model most preferred embodiment.

Figure 20 is Paracentesis needle holder and operating grip structural representation top view in this utility model most preferred embodiment.

Figure 21 is the structural representation axonometric chart of blood sample collecting pipe over cap in this utility model most preferred embodiment.

Label declaration:

The 171 rear cylinder of end 172 173 sliding tray 174 elastic suspended tongue 175 buckle 2 blood sample collecting pipe 21 sealant 22 over cap 23 seal rubber plug 24 core hole 24L shape grooves of 11 puncture needle tubing 12 blood-collecting needle tube 13 hose connector 14 blood sampling sealing shroud 15 Paracentesis needle holder 16 operating grip 161 pit 17 protective sleeves are section 26L shape groove cross break section 3 blood sampling needle stand 31 cylindrical cavity 32 operation window 33 short arc convex clamping points vertically

Below in conjunction with accompanying drawing, this utility model is carried out more detailed description.

The specific embodiment

Embodiment one:

With reference to Fig. 3, Fig. 4, have the monoblock type vacuum blood sampler of needle point protective sleeve, comprise puncture needle assembly, hose connector 13, blood-collecting needle tube 12, blood sample collecting pipe 2 and a kind of blood sampling needle stand 3.The puncture needle assembly is comprised of puncture needle tubing 11, Paracentesis needle holder 15, operating grip 16 and needle point protective sleeve 17 etc.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, 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, the puncture needle assembly, rod shape that described needle point protective sleeve 17 is a kind of hollow cover is planted and affixed and form by cylinder end 171 and rear cylinder 172.Cylinder end 171 leading portion points contract and have the inner chamber that mates with the puncture needle tubing.Rear cylinder 172 is a kind of Cylinder shape constructional elements, has pre-and post perforative cylindrical cavity, and puncture needle tubing 11 contains and is enclosed within this inner chamber, and this inner chamber also contains the hose connector 13 that is overlapping Paracentesis needle holder 15 and stretching into from termination thereafter simultaneously.Paracentesis needle holder 15 inner core hollows, its front end is pegged graft with puncture needle tubing 11, and the rear end is affixed with hose connector 13.Extend axially a kind of sliding tray 173 of tail end sealing on rear cylinder 172 sidewalls, operating grip 16 laterally prominent penetrating in this sliding tray 173 and with Paracentesis needle holder 15 is affixed is integral.Puncture needle tubing 11, Paracentesis needle holder 15, operating grip 16 and hose connector 13 form the slide unit that a kind of protective sleeve 17 relatively retreats slip.Along with slide unit retreat that puncture needle tubing 11 retracts in protective sleeve 17 inner chambers until in the protective sleeve 17 that submerges fully and limited by non-return device and can not before push away.This non-return device is comprised of Elastic buckle and pit 161.This Elastic buckle is comprised of the buckle 175 on elastic suspended tongue 174 and outstanding tongue top; empty along the interval parallel with sliding tray 173 and allow this empty at sliding tray tail end and sliding tray " U " shape near protective sleeve sliding tray 173 tail ends and even wear; this " U " shape central authorities namely form an elastic suspended tongue 174; buckle 175 is arranged in these elastic suspended tongue 174 tops and prominent protruding in sliding tray 173, and pit 161 is positioned at the root of operating grip 16.Retreat its pit 161 of the slide unit that puts in place just with Elastic buckle 175 clampings, thereby push away before stoping the needle tubing 11 that punctures.

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; but pusher operating grip 16 retracts in protective sleeve 17 inner chambers puncture needle tubing 11 at this moment; 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; 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 15, Figure 16, Figure 17, Figure 18, Figure 19, Figure 20; monoblock type vacuum blood sampler with needle point protective sleeve; have two sliding trays 173 in puncture needle assembly wherein and be symmetrically distributed in protective sleeve 17 both sides, and have two operating grips 16 respectively correspondence run through sliding tray 173 and equal and Construction integrations affixed with Paracentesis needle holder 15.Operating grip 16 is a kind of ear shape of pinching, and pinches ear and forms a kind of two ear operating grip of pinching for two that jointly are connected with Paracentesis needle holder 15.This two mode that the ear operating grip provides another kind of convenient operation of pinching.

With reference to Figure 21, 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 (22)

1. the monoblock type vacuum blood sampler that has the needle point protective sleeve, comprise the puncture needle tubing that is accompanied with operating grip etc., 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 and a kind of needle point protective sleeve, 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, needle point protective sleeve rearward end inner chamber contains and is overlapping the hose connector that stretches into from termination thereafter, extend axially a kind of tail end on this protective sleeve sidewall and be provided with the sliding tray that retreats obstacle, the puncture needle tubing is connected with hose connector, operating grip is connected and dashes forward with the puncture needle tubing and passes this sliding tray and be exposed at outside protective sleeve, puncture needle tubing and operating grip form the slide unit that a kind of protective sleeve relatively retreats slip, along with slide unit retreat the puncture needle tubing retract in the protective sleeve inner chamber until in the protective sleeve that submerges fully.

2. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1, 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.

3. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1, 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.

4. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 3, 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.

5. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 4; it is characterized in that; this short arc convex clamping point is 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.

6. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1, it is characterized in that, the structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of along the structure that inwalls circumferentially distribute or symmetrical elastic card touches of cylindrical cavity and the combination of another kind of suitable structure, 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.

7. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1, is characterized in that, the blood sample collecting pipe is threaded in cylindrical cavity, and suitable structure is a kind of structure that is threaded.

8. according to claim 1 and 2 or 3 or 4 or 5 or 6 or 7 described monoblock type vacuum blood samplers with needle point protective sleeve; 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, and the over cap capping plug is on the collecting pipe mouth of pipe and seal rubber plug.

9. according to claim 1 and 2 or 3 or 4 or 5 or 6 or 7 described monoblock type vacuum blood samplers with needle point protective sleeve; 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 operated by rotary motion of cylindrical cavity on over cap.

10. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1; it is characterized in that; 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.

11. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1 is characterized in that, blood sample collecting pipe pipe close sealant thickness is 3-0.5MM.

12. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1; 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.

13. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1; it is characterized in that; the sliding tray tail end retreats obstacle and can stop the puncture needle tubing of recession to pass protective sleeve; this obstacle that retreats can be a kind of prominent protruding stuck point at the sliding tray tail end, can be also the sealing of sliding tray tail end.

14. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1; it is characterized in that; also include a kind of non-return device; this non-return device is arranged between slide unit and protective sleeve, is retracted into slide unit in the protective sleeve inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

15. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 14; it is characterized in that; this non-return device is the symmetrical closed tongue piece of a kind of elasticity; be arranged in protective sleeve front end inner chamber; this two closed tongue piece all tilts and forms a kind of tubaeform; horn mouth forward, loudspeaker tail serrated end backwards is comprised of the closed joint portion of closed tongue piece, puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and affixed with operating grip through serrated end thus backward from horn mouth.

16. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 14; it is characterized in that; this non-return device is comprised of Elastic buckle and pit; Elastic buckle is positioned on protective sleeve; pit is positioned on slide unit; retreat its pit of slide unit of putting in place just with the Elastic buckle clamping, thereby push away before stoping the needle tubing that punctures.

17. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 16, it is characterized in that, this Elastic buckle is comprised of the buckle on elastic suspended tongue and outstanding tongue top, empty along the interval parallel with sliding tray near protective sleeve sliding tray tail end and allow this empty at sliding tray tail end and sliding tray " U " shape and even wear, this " U " shape central authorities namely form an elastic suspended tongue, buckle is arranged in this elastic suspended tongue top and prominent protruding in sliding tray, pit is positioned at the root of operating grip, operating grip is connected with the puncture needle tubing by this root, retreat the operating grip that puts in place along sliding tray, the buckle clamping just therewith of its pit.

18. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1 is characterized in that, have two sliding trays and be symmetrically distributed in protective sleeve both sides, and have two operating grips respectively correspondence run through sliding tray and all be connected with the needle tubing that punctures.

19. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 18 is characterized in that, operating grip is a kind of ear shape of pinching, and pinches ear and forms a kind of two ear operating grip of pinching for two that jointly are connected with the puncture needle tubing.

20. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 1; it is characterized in that, also include Paracentesis needle holder, Paracentesis needle holder is positioned at protective sleeve; puncture needle tubing tail end is plugged on this Paracentesis needle holder, and Paracentesis needle holder is connected with operating grip by the root of operating grip.

21. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 20; it is characterized in that; Paracentesis needle holder hollow; the puncture needle tubing is plugged in Paracentesis needle holder leading portion core chamber; the Paracentesis needle holder rear end is provided with a kind of termination that is connected with hose connector, and the hose connector tube core is communicated with the needle tubing tube core that punctures by Paracentesis needle holder core chamber.

22. the monoblock type vacuum blood sampler with needle point protective sleeve according to claim 20 is characterized in that, Paracentesis needle holder and operating grip Construction integration.

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