Monoblock type vacuum blood sampler with inlying catheterTechnical fieldThe present invention relates to vacuum blood collection apparatus, particularly a kind of monoblock type vacuum blood sampler with inlying catheter outside a kind of human body in clinical treatment.
Background technology
A kind of vacuum blood sampler of the prior art is as shown in Fig. 1, Fig. 2, including blood taking needle and blood sample collection pipe 2, blood taking needle one end is vascular puncture needle tubing 11, and the other end is to carry gum cover blood-collecting needle tube 12, and centre is connected by hose connector 13.The device first pulls out protective case on the needle tubing of two, by vascular puncture needle tubing in blood sampling11 are pierced into sufferer arm vein, wait blood to enter in blood sampling conduit, medical worker pushes down the needle handle of the vascular puncture needle tubing 11 with little finger immediately, are come off to prevent puncturing needle tubing；Due to blood sample collection pipe 2Seal rubber plug is very thick, and the pinpoint inclined plane angle of blood-collecting needle tube 12 is big, and needle point is blunt, and it is very big to add the sealed rubber pipe of blood-collecting needle tube 12 elastic force when being compressed axially, therefore needs both hands could be by blood-collecting needle tube 12It is pierced into blood sample collection pipe, operation is quite inconvenient.Due to blood sample collection pipe 2It is inside negative pressure, the speed that blood is flowed into the collecting pipe.It is to be collected to required sample amount, if multitube blood sample need to be gathered, must bimanualness blood-collecting needle tube 12 could be extracted from collecting pipe 2.Now blood-collecting needle tube 12Outer soft rubber sleeve restores, and encases blood-collecting needle tube, prevents blood outflow pollution environment, the intubation before then repeating in conduit；If need not draw blood again, puncture needle tubing 11 on human body must be first extracted, then needle tip shield is put, then pull out blood-collecting needle tube 12 on collecting pipe 2.This vacuum blood sampler is due to blood taking needle 1 and the split of collecting pipe 2 construction as can be seen here, and blood collection procedure need to care for hose connector 13 simultaneouslyTwo needle tubing, cause complex operation cumbersome, multiple operating procedures even need both hands and also need to impose certain and just right power that the extraction and insertion of needle tubing could be completed, and the needle tubing to other end now can not be just cared for, so involving again needs the cooperating of more than one medical personnel.The presence of the cumbersome operating procedure of this complexity and two needle tubing,Medical personnel's workload and psychological burden are virtually added, under the big scene of limb activity amplitude, maloperation is easily produced suffering from unconsciousness, restless, disoperative patient and patient infant.And the puncture needle tubing for puncturing into blood vessel easily produces swing in puncture process and blood collection procedure, this swing directly results in the damage for puncturing needle tubing needle point to blood vessel, in the case where mismatching the big scene of patient limb movable amplitude, the damage that this damage can not almost be avoided and caused is bigger.
The content of the invention
It is an object of the invention to overcome weak point of the prior art, and provide a kind of structure simplification, the monoblock type vacuum blood sampler with inlying catheter that is easy, being difficult injured blood vessel simple to operate.
The purpose of the present invention is realized by following approach.
Monoblock type vacuum blood sampler with inlying catheter, puncture needle tubing including being accompanied with operation handle etc., soft extension tube, blood-collecting needle tube and blood sample collection pipe, its composition is characterized by, also include a kind of blood sampling needle stand, blood taking needle seat tool has cylindrical cavity, cylindrical cavity tail end is opened, blood-collecting needle tube is fixed on its front bulkhead and extended rearward in cylindrical cavity, blood sample collection pipe pipe close is preceding can be plugged in the way of plug in the cylindrical cavity, the length of cylindrical cavity is less than the length of blood sample collection pipe, the afterbody for the blood sample collection pipe being plugged in cylindrical cavity is exposed outside cylindrical cavity, there is gap between blood sample collection pipe front end face and cylindrical cavity front bulkheadA, blood sample collection pipe pipe close aft bulkhead has a sealant that can be pierced through by blood-collecting needle tube rear end, and this sealant thickness is less than gap AThickness, there is the connecting structure being adapted with blood sample collection pipe pipe close in cylindrical cavity, its annexation to be formed compared with consolidation that is connected with blood sample collection pipe pipe close, thus blood sample collection Guan Jing constructs loading and takes out cylindrical cavity, it is that the blood sample collection pipe tube chamber after a kind of remaining needle, indwelling needle catheter tube core, soft extension tube tube core, blood-collecting needle tube tube core and pierced sealant constitutes a kind of blood channel to puncture needle tubing.
So, increase blood sampling needle stand simultaneously in advance links together blood sample collection pipe with blood sampling needle stand and blood-collecting needle tube, whole blood-taking device is set to be integrally formed construction, the loading and taking-up that connecting structure not only facilitates blood sample collection pipe of being adapted to of above-mentioned cylindrical cavity and pipe close, be connected the annexation to be formed compared with consolidation with blood sample collection pipe pipe close again simultaneously, the blood sample collection pipe being so conveniently inserted in cylindrical cavity is difficult for drop-off when upright to be come out, and the insertion degree of the blood sample collection pipe from being given in sense of touch installed in cylindrical cavity, so as to convenient installation.And needle tubing will be punctured and be substituted for remaining needle, this remaining needle can be general medical remaining needle, so, needle point only plays puncture vessel and guiding catheter intravasation, once seeing blood back, needle point is blood vessel of dropping back out, by flexible catheter retention in the blood vessel as the passage of blood sampling；And in emergency situations, after blood sampling also can the temporary retention conduit to be infused.
When actual use, remaining needle needle point is pierced into human vas first, etc. seeing after blood back, recession remaining needle push handle, needle point is retracted a little in conduit, reduction punctures height, conduit is sent into blood vessel, recession needle point is then proceeded to after conduit, now, blood enters soft extension tube tube core from conduit tube core, soft extension tube is full of Deng blood, one hand little finger gently presses A/C, remaining four finger pinches blood sampling needle stand, because pipe close sealant is than relatively thin, another hand touches blood sample collection pipe from bottom, blood-collecting needle tube needle point is allowed to pass through fluid sealant, into in collecting pipe, until collecting pipe is touched with cylindrical cavity front bulkhead and can not moved onward again；Due to suction function in collecting pipe, blood is flowed rapidly into blood collection tube to after desired sample amount, if multitube blood sample need to be gathered, can be pinched blood sampling needle stand, easily be exited blood sample collection pipe, is inserted into and new is collected blood sampling tube.After blood sampling terminates, people's body end conduit is first withdrawn from, then exits blood collection tube, because blood sampling needle stand is than blood taking needle pipe range, therefore can guarantee that blood-collecting needle tube needle point will not hurt people, and during blood collection tube is changed repeatedly, blood sampling needle stand also acts as insertion guide effect, blood sampling needle point will not pierce people, therefore play safety protection function, blood-collecting needle tube seal pipe resilience simultaneously is closed, seals blood taking needle tube head, it is to avoid blood pollution.
As can be seen here, the present invention becomes that two body of the prior art is discrete and be integrated construction, structure simplifies, it is simple to operate easily and prevent the phenomenon of needle tip injured blood vessel, reduce that phlebitis occurs and metal allergy is put and answered.
The purpose of the present invention can also be realized by following approach.
The length of indwelling needle catheter is 18-22 millimeters.
The length of general medical retention wire guide is longer, is optimal using the length through repetition test because the conduit in this patent is mainly used in blood sampling.
Also include a kind of infusion connector, this infusion connector is fixed in soft extension tube tail end, soft extension tube passes through this infusion connector and the blood sampling dismantled and assembled connection of needle stand.
Under the state of emergency, after blood sampling, the present invention can be used to be infused.The setting of infusion connector, facilitate the connection with infusion device, when using, hose connector can be clamped with flow-stopping clip, blood flow path is blocked, blood sampling needle stand is separated from infusion connector, at once pre-prepd transfusion device butt joint is inserted, flow-stopping clip in extension tube is opened, recovers fluid passage, so that it may carry out infusion treatment.
This infusion connector can be conventional straight joint, needleless joint.
Can also further it be optimized on the present invention：
When cylindrical cavity and both pipe closes, which are in, is adapted to connection status, blood-collecting needle tube rear end is just in before sealant to be pierced through.
So it is easy to hold the pre-inserted degree of blood-collecting needle tube in the sense of touch of insertion.
The connecting structure of the adaptation has multiple choices, such as barrel chamber internal diameter inside contracts the size mode of rear interference fits, and following one kind are a kind of optimum choices：
The construction being adapted in cylindrical cavity with pipe close is a kind of tactile construction of the circumferentially distributed or symmetrical elastic card of a plurality of inwalls along cylindrical cavity.
It can be a kind of short arc convex clamping point that this elastic card, which touches construction, or this short arc convex clamping point or blood sample collection pipe pipe close are made up of elastomeric material.
This elastic card, which touches construction, can cause the elastic urgent connection status of cylindrical cavity inwall and pipe close, but when applying axial force, blood sample collection pipe can still do with respect to cylindrical cavity and before push away or retreat freely.
This short arc convex clamping point is exactly a kind of convex salient point on cylindrical cavity inwall of dashing forward as its name suggests, and thickness is low shallow and there is arc-shaped transition front and rear side, in order to which creeping for pipe close is passed through.
Other adaptation connecting structure can also separately be increased on the basis of this elastic card touches construction to be used cooperatively to reach more preferable using effect, the following is using cooperatively that one of which optimizes：
The construction being adapted in cylindrical cavity with pipe close is a kind of tactile construction of the circumferentially distributed or symmetrical elastic card of a plurality of inwalls along cylindrical cavity, and another construction being adapted is the L being produced on pipe close outer peripheral faceShape groove and the prominent salient point being produced on cylindrical cavity inwall, the prominent salient point enter L from the termination of the L shape groove vertical sections positioned at pipe close front end faceShape groove can simultaneously be slided wherein, when cylindrical cavity inwall and tactile pipe close elastic card, and the prominent salient point has been enter into LReach in vertical section in shape groove but not yet the bottom of the vertical section, now blood-collecting needle tube rear end is just in before sealant to be pierced through, after sinciput blood sample collection pipe to blood-collecting needle tube pierces through sealant, the prominent salient point just reaches the bottom of the vertical section, blood sample collection pipe is now rotated, the prominent salient point entersCross break section in L shape grooves.
So, LCross break section in shape groove can be with locked blood sample collection pipe in the axial direction the free degree, make its relative blood sampling needle stand can neither before push away and can not retreat.
Blood sample collection pipe can also be connected with cylindrical cavity by this way：
Blood sample collection pipe screw thread is connected in cylindrical cavity, and the construction being adapted is a kind of threaded connection configuration.
Blood sample collection pipe pipe close is made up of seal rubber plug and protection cap, and fluid sealant plug sleeve plug is in collecting pipe tube chamber, and protection cap lid plug is on the collecting pipe mouth of pipe and seal rubber plug.
The construction being adapted with cylindrical cavity is generally located in protection cap.
Blood-collecting needle tube is coated with blood sampling sealing shroud, and blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant, and this core bore internal diameter is more slightly larger than blood sampling sealing shroud external diameter.
So, blood-collecting needle tube band with blood sampling sealing shroud along this core bore penetrate pipe close when, blood sampling sealing shroud by axial compression compress radial distorted dilatating and deformable, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube deviate from seal rubber plug.
Blood sample collection pipe pipe close sealant thickness is 3-0.5MM, preferably 1.5-0.5MM.
So blood-collecting needle tube can easily wear out sealant.
Blood sampling needle stand is with being contained on the position being adapted in cylindrical cavity along blood sampling that needle stand is axially arranged has a kind of strip grooves as operation window in blood sample collection pipe pipe close, this operation window has two, and Relative distribution is in the both sides of cylindrical cavity.
So blood back can be observed by this operation window, observe the state of blood volume in blood sample collection pipe, also the insert state of observable blood sample collection pipe and insertion degree, can also be when extracting blood sample collection pipe, blood sample collection pipe firmly first is exited backward through this operation window grip pipe close, so as to collect the disengaging of tube body and pipe close when preventing from exiting blood sample collection pipe.
In summary, the present invention has the following advantages that compared with prior art：Increase blood sampling needle stand simultaneously in advance links together blood sample collection pipe with blood sampling needle stand and blood-collecting needle tube, whole blood-taking device is set to be integrally formed construction, and blood sample collection pipe that the construction that the construction that is adapted with pipe close or even elastic card are touched in cylindrical cavity had both conveniently been inserted in cylindrical cavity it is upright when will not fall off out, and the insertion degree of the blood sample collection pipe from being given in sense of touch installed in cylindrical cavity, so that convenient install.Whole device structure simplifies and simple to operate easy.And needle tubing will be punctured and be substituted for remaining needle, it is therefore prevented that the phenomenon of needle tip injured blood vessel, reduce phlebitis occur and metal allergy put should, in emergency situations, after blood sampling also can the temporary retention conduit to be infused.
Brief description of the drawings
Fig. 1 is a kind of vacuum blood sampler blood sample collection pipe insert state schematic diagram in the prior art.
Fig. 2 is that a kind of vacuum blood sampler blood sample collection pipe withdraws from view in the prior art.
Fig. 3 is the schematic appearance of the monoblock type vacuum blood sampler of the present invention with inlying catheter.
Fig. 4 is the structural representation of the monoblock type vacuum blood sampler of the present invention with inlying catheter.
Fig. 5 is the view after the monoblock type vacuum blood sampler blood sampling of the present invention with inlying catheter.
Fig. 6 is the structural representation front view of blood sampling needle stand in the embodiment of the present invention one.
Fig. 7 is the structural representation top view of blood sampling needle stand in the embodiment of the present invention one.
Fig. 8 is the structural representation of blood sample collection protection of pipe lid in the embodiment of the present invention two.
Fig. 9 is the structural representation stereogram of blood sample collection protection of pipe lid in the embodiment of the present invention two.
Figure 10 is the structural representation stereogram of blood sample collection protection of pipe lid in preferred embodiment.
Label declaration：
11 puncture the sealant 22 of 12 blood-collecting needle tube of needle tubing, 13 2 blood sample collection pipe of the blood sampling sealing shroud of hose connector 14 21The infusion connector 5 of 3 33 short arc convex clamping point of blood sampling needle stand 31 cylindrical cavity, 32 operation window of the core bore 25L shape groove vertical section 26L shape grooves cross break of 23 seal rubber plug of protection cap 24 section 4Flow-stopping clip.
More description in detail is carried out to the present invention below in conjunction with the accompanying drawings.
Embodiment
Embodiment one：
Reference picture 3, Fig. 4, the monoblock type vacuum blood sampler with inlying catheter, including puncture needle tubing 11, hose connector 13, blood-collecting needle tube 12, blood sample collection pipe 2, a kind of blood sampling needle stand 3 and infusion connector 4.It is a kind of enclosed remaining needle to puncture needle tubing 11, and with the puncture needle with blood back groove, the length of indwelling needle catheter is20 millimeters, the remaining needle of this in figure, which has, applies the wing, but also can be without the deposited wing.The catheter block of 13 one end connecting puncture needle pipe of hose connector 11, other end connection infusion connector 4, this infusion connector 4It is that a kind of straight joint is fixed in the soft tail end of extension tube 13, soft extension tube 13 passes through this infusion connector 4 and the blood sampling dismantled and assembled connection of needle stand 3.Needle stand 3 of taking a blood sample has cylindrical cavity 31, cylindrical cavity tail end opens, and blood-collecting needle tube 12 is fixed on its front bulkhead and extends rearward in cylindrical cavity 31, and the pipe close of blood sample collection pipe 2 is preceding can be plugged on the cylindrical cavity 31 in the way of plugIn, the length of cylindrical cavity 31 is less than the length of blood sample collection pipe 2, and the afterbody for the blood sample collection pipe 2 being plugged in cylindrical cavity is exposed outside cylindrical cavity 31, blood sample collection pipe 2There is gap A, the pipe close aft bulkhead of blood sample collection pipe 2 has a sealant 21 that can be pierced through by the rear end of blood-collecting needle tube 12, this sealant 21 between front end face and the front bulkhead of cylindrical cavity 31Thickness, which is less than, has the construction being adapted with the pipe close of blood sample collection pipe 2, indwelling needle catheter tube core, the tube core of hose connector 13, blood-collecting needle tube 12 in gap A thickness, cylindrical cavity 31The tube chamber of blood sample collection pipe 2 after tube core and pierced sealant 21 constitutes a kind of blood channel.
Reference picture 4, the pipe close of blood sample collection pipe 2 is made up of seal rubber plug 23 and protection cap 22, seal rubber plug 23Set plug is in collecting pipe tube chamber, and the lid plug of protection cap 22 is on the collecting pipe mouth of pipe and seal rubber plug 23.The front end face of said blood sample collection tube 2 is protection cap front end face.Said blood sample collection tube 2The sealant 21 of pipe close aft bulkhead is located on seal rubber plug.Sealant thickness is 1.0MM.
Reference picture 6, Fig. 7, cylindrical cavity 31The interior construction being adapted with pipe close is a kind of two inwalls along cylindrical cavity circumferentially tactile construction of symmetrical elastic card.It is a kind of short arc convex clamping point 33, this short arc convex clamping point 33 that this elastic card, which touches construction,It is made up of elastomeric material.When the protective case 22 of blood sample collection pipe 2 is touched with this short arc convex clamping point 33 card, the rear end of blood-collecting needle tube 12 is just in before sealant 21 to be pierced through.
Reference picture 6, Fig. 7, blood sampling needle stand 3 with the pipe close of blood sample collection pipe 2 in be contained in cylindrical cavity 31Along taking a blood sample, needle stand 3 is axially arranged to have a kind of strip grooves as operation window 32 on the position being inside adapted, and this operation window 32 has two, and Relative distribution is in the both sides of cylindrical cavity 31.This operation window 32Misplace 90 degree and be distributed with above-mentioned short arc convex clamping point 33.
Reference picture 4, Fig. 5, blood-collecting needle tube 12 are coated with blood sampling sealing shroud 14, blood sample collection pipe pipe close is provided centrally with axially extending to the core bore 24 of sealant 21, and this internal diameter of core bore 24 is more slightly larger than the blood sampling external diameter of sealing shroud 14.So, blood-collecting needle tube 12 is with blood sampling sealing shroud14 along this core bore 24 penetrate pipe close when, blood sampling sealing shroud 14 by axial compression compress radial distorted dilatating and deformable, just with this core bore 24Inner hole wall extrusion friction, will not more allow blood-collecting needle tube to deviate from seal rubber plug.
Reference picture 5, infusion connector 4 can also be a kind of needleless joint, infuse and connect for catheter retaining.
When actual use, remaining needle needle point is pierced into human vas first, waits and sees after blood back, recession remaining needle push handle, needle point is retracted to a little in conduit, reduction puncture height, conduit is sent into blood vessel, recession needle point is then proceeded to after conduit, now, blood enters soft extension tube tube core from conduit tube core, waits blood to be full of soft extension tube, one hand little finger gently presses A/C, and remaining four finger pinches blood sampling needle stand3, because pipe close sealant 21 is than relatively thin, another hand touches blood sample collection pipe 2 from bottom, allows the needle point of blood-collecting needle tube 12 to enter through sealant 21 in collecting pipe, until collecting pipe and cylindrical cavity 31Front bulkhead, which is touched, to move onward again；Due to suction function in collecting pipe, blood is flowed rapidly into after desired sample amount in blood collection tube 2, if multitube blood sample need to be gathered, and can pinch blood sampling needle stand 3, and pass through operation window 32Pinch blood sample collection pipe 2 easily to exit it, be inserted into new collection blood sampling tube.After blood sampling terminates, people's body end inlying catheter is first withdrawn from, then exit blood collection tube 2.Transfusion is such as needed, then can close hose connector with the folder of flow-stopping clip 513, blood collection tube 2 is exited, then blood sampling needle stand 3 is exited, now transfusion operation can be carried out by infusion connector 4.Because blood sampling needle stand 3 is longer than blood-collecting needle tube 12, therefore it can guarantee that blood-collecting needle tube 12Needle point will not hurt people, and during blood collection tube is changed repeatedly, blood sampling needle stand 3 also acts as insertion guide effect, and blood sampling needle point will not pierce people, therefore play safety protection function, while sealing shroud 14 of taking a blood sampleResilience is closed, seal blood-collecting needle tube 12, it is to avoid blood pollution.
The not described part of the present embodiment is same as the prior art.
Embodiment two：
The construction being adapted in reference picture 8, Fig. 9, cylindrical cavity 31 with pipe close is by short arc convex clamping point 33Constituted with a kind of threaded connection configuration, the male and female screw thread in the threaded connection configuration is produced in protection cap 22 and the internal perisporium of cylindrical cavity 31.Blood sample collection pipe 2 is first threaded into cylindrical cavity 31In, stop screwing in when touching with the card of short arc convex clamping point 33, now the rear end of blood-collecting needle tube 12 is just in before sealant 21 to be pierced through.During blood sampling, spiral can wear blood taking needle tube top sealant 21 again.
The not described part of the present embodiment is identical with embodiment one.
Most preferred embodiment：
Reference picture 10The construction being adapted in cylindrical cavity with pipe close is a kind of tactile construction of the circumferentially distributed or symmetrical elastic card of a plurality of inwalls along cylindrical cavity, it is a kind of short arc convex clamping point that this elastic card, which touches construction, and this short arc convex clamping point and blood sample collection pipe pipe close are made up of elastomeric material.Another construction being adapted is to be produced on pipe close protection capL shapes groove on 22 outer peripheral faces and the prominent salient point being produced on cylindrical cavity inwall, the prominent salient point enter L from the termination of the L shape grooves vertical section 25 positioned at pipe close front end faceShape groove can simultaneously be slided wherein, when cylindrical cavity inwall and tactile pipe close protection cap elastic card, and the prominent salient point has been enter into the vertical section 25 in L shape grooves but not yet reaches the bottom of the vertical section 25, now blood-collecting needle tube 12Rear end is just in before sealant 21 to be pierced through, after sinciput blood sample collection pipe 2 to blood-collecting needle tube 12 pierces through sealant 21, and the prominent salient point just reaches the vertical section 25Bottom, now rotate blood sample collection pipe 2, the cross break section 26 that the prominent salient point enters in L shape grooves.So, in L shapes groove cross break section 26 and the cooperation of the prominent salient point can be with locked blood sample collection pipe 2The free degree in the axial direction, make its relative blood sampling needle stand 3 can neither before push away and can not retreat.
The not described part of the present embodiment is identical with embodiment one.