CN105142521B - Counterflow-preventing syringe-type vacuum blood collector - Google Patents
Counterflow-preventing syringe-type vacuum blood collector Download PDFInfo
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- CN105142521B CN105142521B CN201380075603.1A CN201380075603A CN105142521B CN 105142521 B CN105142521 B CN 105142521B CN 201380075603 A CN201380075603 A CN 201380075603A CN 105142521 B CN105142521 B CN 105142521B
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- 239000000203 mixture Substances 0.000 claims abstract description 9
- 230000002792 vascular Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 33
- 238000009434 installation Methods 0.000 claims description 29
- 238000010276 construction Methods 0.000 claims description 21
- 230000001681 protective effect Effects 0.000 claims description 11
- 230000010354 integration Effects 0.000 claims description 8
- 208000005168 Intussusception Diseases 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 4
- 238000002955 isolation Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000670 limiting effect Effects 0.000 claims description 2
- 230000002439 hemostatic effect Effects 0.000 claims 1
- 238000012536 packaging technology Methods 0.000 abstract description 6
- 230000001194 anti-hemostatic effect Effects 0.000 abstract description 3
- 210000004247 hand Anatomy 0.000 description 41
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 11
- 229960002897 heparin Drugs 0.000 description 11
- 229920000669 heparin Polymers 0.000 description 11
- 230000002787 reinforcement Effects 0.000 description 8
- 239000000306 component Substances 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 210000004204 blood vessel Anatomy 0.000 description 6
- 238000007789 sealing Methods 0.000 description 4
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150221—Valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150389—Hollow piercing elements, e.g. canulas, needles, for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
- A61B5/150519—Details of construction of hub, i.e. element used to attach the single-ended needle to a piercing device or sampling device
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150572—Pierceable protectors, e.g. shields, caps, sleeves or films, e.g. for hygienic purposes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
- A61B5/150633—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves
- A61B5/150641—Protective sleeves which are axially extensible, e.g. sleeves connected to, or integrated in, the piercing or driving device; pivotable protective sleeves comprising means to impede repositioning of protection sleeve from covering to uncovering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150732—Needle holders, for instance for holding the needle by the hub, used for example with double-ended needle and pre-evacuated tube
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
A kind of counterflow-preventing syringe-type vacuum blood collector, including vascular puncture needle tubing（11）, Paracentesis needle holder（12）, blood-collecting needle tube（21）, blood sampling needle stand（22）With tubular syringe（5）.Paracentesis needle holder（12）Core cavity and blood sampling needle stand（22）Core cavity connects and is used as blood sampling passage, vacuum test tube（4）Syringe can be plugged on（5）In the cylindrical cavity at rear portion.Its composition is characterized by, in Paracentesis needle holder（12）Or blood sampling needle stand（22）Blood channel on be provided with the valve for preventing reverse-flow that a kind of anti-Hemostatic Oral Liquid inversely overflows（7）.Compared with prior art, the vacuum blood collector can prevent blood back flow, and operating physical force is big and exerts a force conveniently, and operation is firm, and rational in infrastructure, packaging technology is good.
Description
Technical field
The present invention relates to vacuum blood collection apparatus, particularly a kind of counterflow-preventing syringe-type vacuum outside a kind of human body in clinical treatment
Hemostix.
Background technology
A kind of syringe-type vacuum blood collector of the prior art as shown in Figure 1 and Figure 2, including vascular puncture needle tubing 11, puncture
Needle stand 12, blood-collecting needle tube 21, blood sampling needle stand 22, hose connector 3, vacuum test tube 4 and a kind of transparent tubular syringe 5.Puncture needle
Seat 12 is located at the front end of syringe 5, can be fixed on syringe 5；When for needle point protect it is safety-type when, the Paracentesis needle holder can be relative
Syringe 5 is slided.Blood sampling needle stand 22 is fixed on the interior forward end wall of syringe 5, is connected between two kinds of needle stands by hose connector 3, pin
The cylindrical cavity rear end at 5 rear portions of cylinder is opened, and vacuum test tube 4 can be inserted freely into cylindrical cavity.
In Clinical practice, needle tubing 11 is punctured first and is pierced into blood vessel, is seen by hose connector 3 after blood back, a hand clamping
Syringe 5, another hand again inserts the front end of vacuum test tube 4 in syringe cylindrical cavity, firmly inserts inward, allows blood-collecting needle tube 21
Through vacuum test tube seal rubber plug 41, blood sampling purpose is reached.Above-mentioned blood-collecting needle tube penetration process need to overcome two resistances：One is
The bounce that antidrip gum cover 23 is pressurized and produced, the antidrip gum cover 23 is coated on the needle point of blood-collecting needle tube 21；Two be that needle tubing is passed through
The frictional resistance of vacuum test tube seal rubber plug 41.For overcome two resistances and it is preceding push away the operating physical force of vacuum test tube needed for must
So larger, the so easy vacuum test tube that produces is rocked and the unstable phenomenon of syringe clamping, is either rocked or is clamped not
The steady needle point that can all directly result in scratches endangium or wears out vascular risk, and both of which makes blood vessel further be damaged
Evil, easily triggers inflammation.
Also there is a deficiency in the prior art, on packaging technology, need to will connect wearing for flexible pipe in Clinical practice
Lancet unit and one of needle assemblies of taking a blood sample, are first fitted into tubular syringe inner chamber, and fix stably, reassemble another component, by
In tubular syringe inner chamber than narrow, packaging technology certainly will be brought bad and inefficiency problem.
The negative pressure amount of vacuum test tube is set according to blood sampling volume.In Clinical practice, due to need to first prick upper drive blood
Band, and rise in the Esmarch's bandage limbs lower end intravascular pressure tightened, blood inflow negative pressure state is true after blood taking needle intervention ulnar vein
In empty heparin tube, preset negative pressure exhausts blood sampling and terminated, now, intravascular pressure=vacuum test tube internal pressure.Blood sampling ends, and takes drive
Blood band, intravascular pressure is reduced rapidly, comes back to normal pressure, and now hemostix does not exit blood vessel also, and heparin tube internal pressure>It is intravascular
Pressure, it is possible to cause the blood taken to return intravascular and occur risk of infection.
The content of the invention
It is an object of the invention to overcome weak point of the prior art, and providing a kind of prevents the anti-of blood back flow
Adverse current syringe-type vacuum blood collector；It is not likely to produce it is a further object of the present invention to provide a kind of convenient, operating process that exerts a force
Rock counterflow-preventing syringe-type vacuum blood collector that is unstable and being easy to operation；Another step purpose of the present invention is to provide a kind of structure
More reasonable and packaging technology preferably slides the syringe-type vacuum blood collector of blood sampling needle stand.
The purpose of the present invention is realized by following approach.
Counterflow-preventing syringe-type vacuum blood collector, including vascular puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube, blood sampling needle stand and
A kind of tubular syringe, Paracentesis needle holder core cavity is connected with blood sampling needle stand core cavity and is used as blood sampling passage, and vacuum test tube can be planted
In the cylindrical cavity at syringe rear portion, its composition is characterized by：It is provided with the blood channel of Paracentesis needle holder or needle stand of taking a blood sample
The valve for preventing reverse-flow that a kind of anti-Hemostatic Oral Liquid inversely overflows.
So, it can prevent blood sampling from finishing, prick blood band release moment, moment of the vacuum test tube with respect to human body blood sampling site
Blood back flow caused by malleation.
No matter Paracentesis needle holder is integrally fixed on syringe, and still can make sliding retrogressing with respect to syringe can use the present invention
Described this technical scheme；Equally, needle stand of no matter taking a blood sample is integrally fixed on syringe, and still can make sliding with respect to syringe retreats
It can be used as this technical scheme of the present invention.
The purpose of the present invention can also be realized by following approach.
Valve for preventing reverse-flow has multiple choices, and prior art is common, the following is a kind of optimum choice：
Valve for preventing reverse-flow is arranged on blood sampling needle stand, is a kind of diaphragm type one-way valve.
Valve for preventing reverse-flow is arranged on blood sampling needle stand, can prevent blood back flow in the very first time.
Diaphragm type one-way valve is made up of film and fixed ear, diaphragm external diameter be more than the blood channel in blood sampling needle stand and its
Leading flank contacts laminating with the step surface in blood channel, and fixed ear and needle stand of taking a blood sample are affixed, and fixation tongue thereon is pushed down thin
Film one side, diaphragm when swing backward concedes blood channel, pressure balance or malleation to the corresponding another side of film in negative pressure
Resiled by natural resiliency and touch closing liquid passage with step surface patch.
So, during malleation, even check valve tapping side fluid pressure once more than check valve feed liquor body side pressure, diaphragm by
Pressure is brought into close contact with needle stand inner chamber baseplane, sealing liquid passage, prevents liquid reverse flow.
The counterflow-preventing syringe-type vacuum blood collector also includes a kind of hose connector, Paracentesis needle holder core cavity and blood sampling needle holder core
Chamber is connected by this hose connector.
Paracentesis needle holder be it is a kind of be arranged in syringe inner chamber and the slidably component of displacement, for preventing from being retracted into syringe inner chamber
In puncture needle tubing inversely escape syringe check construction be arranged in the syringe inner chamber before Paracentesis needle holder.
So, the puncture needle tubing after puncture is finished is able to be retracted into syringe inner chamber and limited and wherein not escape in order to avoid piercing
Hinder other people and cause infection.
Reverse stop into direction and foregoing valve for preventing reverse-flow of this check construction inversely stops identical into direction.
The further optimization of this check construction is：
Check construction is along the circumferential direction uniform and tongue piece and dividing wall that axially extend are constituted, tongue piece by 2-5 pieces
Root is connected with the dividing wall, and dividing wall isolation is enclosed in the cavity beyond tongue piece, and a plurality of tongue pieces form point after closing up
Horn shape or cone tip shape, tip-angled shape or cone angle shape are relative with receding into the needle tip in syringe inner chamber backwards.
Two panels tongue piece forms tip-angled shape after closing up, and 3-5 piece tongue pieces form cone tip shape after closing up, and either tip-angled shape is still
Cone tip shape, which all has, closes up the effect of closure, and not only needle point is difficult to from closing up the point of closure, inversely pass at angle, and it is this simultaneously
Holding together closure and reverse pressure effect makes it close up the point of closure, angle construction and dividing wall all the more to the cavity beyond tongue piece
Isolation closing, also makes check construction have preliminary counterflow-preventing effect concurrently.So as to be complemented each other with valve for preventing reverse-flow, imitate counterflow-preventing
Fruit is more preferably.
The counterflow-preventing syringe-type vacuum blood collector also includes a kind of puncture cursor slide, punctures pushing hands and puncture chute,
Needle tubing, Paracentesis needle holder are punctured, cursor slide is punctured and punctures the piercing assembly that a kind of relative syringe of pushing hands composition is slided, cursor slide one is punctured
End is connected or Construction integration with Paracentesis needle holder, and the other end is connected through after puncturing chute with the puncture pushing hands outside syringe, is punctured and is slided
Groove is located at syringe side lower part and axially extending along syringe.
Tubular syringe front opening, a kind of process Installation groove B or prolongs vertically from syringe front end or from back end of syringe
Extend and lead to puncture chute, puncture cursor slide and inserted from this process Installation groove B and up into puncture chute and thereby, with soft company
The piercing assembly that adapter connection is finished axially is planted and intussusception with syringe, and syringe front opening is covered with protecgulum.
So, whole piercing assembly band be connected thereto the hose connector finished be able to from the front end of syringe or after
End insertion is simultaneously connected with syringe plant, and packaging technology is good.
The process Installation groove B width that cracks is be slightly narrower than the groove width for puncturing chute.
So, by means of the opening and the elasticity of syringe plastic material of process Installation groove B front ends, when mounted by this
Kind of elastic deformation opens this mounting process groove B, fills in puncture cursor slide, and the groove width and the arm of puncture cursor slide that puncture chute are wide right
Should, so, process Installation groove B again can be as the prominent card of elasticity of the puncture cursor slide of the smooth sliding in chute is punctured even
Without closing process Installation groove B in plug afterwards.
To realize that the further object of the present invention makees following optimization：
Blood-collecting needle tube, blood sampling needle stand and blood sampling cursor slide, blood sampling pushing hands composition blood collection assembly, the blood collection assembly is with can be relative
Syringe is slidably mounted on syringe, and blood-collecting needle tube, blood taking needle seat are located in syringe inner chamber, and blood sampling cursor slide passes through barrel sidewall
On the inside and outside connection blood sampling needle stand of blood sampling chute and blood sampling pushing hands, blood sampling pushing hands is located at outside syringe, and blood sampling chute is along syringe axial direction
Extension.
During Clinical practice, puncture terminate after vacuum test tube in front thimble tube inner chamber while promote blood sampling to push away backward
Hand, not only operating physical force is big but also force is convenient, it is firm to operate for such two-way function operating physical force.
Also include a kind of auxiliary pushing hands, this auxiliary pushing hands is in the way of limiting vacuum test tube and be moved rearwards by the free degree and true
Empty heparin tube connection, the auxiliary pushing hands is located at the rear of blood sampling pushing hands.
So, grip blood sampling pushing hands and auxiliary pushing hands and impose respectively with the finger of one hand and draw close operation and can easily carry out
Blood sampling penetrates operation.
The relative blood sampling pushing hands of the auxiliary pushing hands can be distributed so that homonymy is front and rear face-to-face, can also be distributed before and after upper and lower sides.
The auxiliary pushing hands can be by an annulus and thereon one outward extension fin constitute, internal radius is between heparin tube
Between outer tube diameter and sealing blood sampling tube plug protective jacket external diameter, its body is inserted in simultaneously from vacuum test tube tail end through the annulus
Continue forward until being touched with seal rubber plug protective jacket by touching with seal rubber plug protective jacket.
So, by annulus and seal rubber plug protective jacket breech face touch and preceding push wing piece obtain before pushed away vacuum blood collection
Pipe.
Stopping into face and stopping through this with vacuum test tube prevents into face and seal rubber plug in the cylindrical cavity at syringe rear portion
The advance for touching prevention vacuum test tube in guard leading end face.
Stop into after the intervention of face, vacuum test tube is no longer before pushed away during clinical manipulation, needle stand of simply taking a blood sample unidirectionally is retreated, this
When auxiliary pushing hands can as blood sampling pushing hands match be easy to take a blood sample pushing hands force.
Syringe inner chamber is provided with three reinforcements, and three reinforcements are evenly distributed and axially extended, after reinforcement
End face stops into face as vacuum test tube.
Tubular syringe front opening, a kind of process Installation groove A or prolongs vertically from syringe front end or from back end of syringe
Extend and lead to blood sampling chute, blood sampling cursor slide is from this process Installation groove A insertions and until enters take a blood sample chute and thereby, blood sampling group
Part and syringe are axially planted and intussusception, the junction of blood sampling needle stand and hose connector or positioned at the leading section of blood sampling needle stand or
Positioned at the sidepiece of blood sampling needle stand, syringe front opening is covered with protecgulum.
Syringe front opening, implements hose connector and blood sampling under the visual situation of eyesight and under looser installation environment
The connection of needle stand.And mounting process groove A setting, it is able to allow blood collection assembly to assemble to finish in advance and assembled again with syringe, makes assembling
Manufacturability is greatly improved.
Process Installation groove A groove width of the width be slightly narrower than blood sampling chute of cracking.
So, by means of the opening and the elasticity of syringe plastic material of process Installation groove A front ends, when mounted by this
Plant elastic deformation and open this mounting process groove A, fill in blood sampling cursor slide, and the arm of the groove width for chute of taking a blood sample and cursor slide of taking a blood sample is wide right
Should, so, process Installation groove A again can be as the prominent card of elasticity of the blood sampling cursor slide of the smooth sliding in blood sampling chute even
Without closing process Installation groove A in plug afterwards.
Blood sampling chute has two, is oppositely arranged on the both sides of syringe, blood sampling cursor slide by two support arms and arc across
Connect the arc arm composition of two support arms, needle stand is affixed or Construction integration with blood sampling for support arm one end, the other end extend out to through
It is connected after corresponding blood sampling chute with arc arm or Construction integration.
So, two support arms or so set and arc arm outside syringe, blood sampling needle stand in syringe, three connection or one
Closed-loop configuration is configured to, integral rigidity is good, and left and right support arm in turn ensure that the stability of blood collection assembly sliding.
Laminating corresponding with syringe outer peripheral face on the inside of arc arm.
So, after assembling is finished, blood collection assembly smooth with respect to syringe can be slid not only with syringe one integrated mass and but also making to adopt
Blood component is with some sliding dampings, and operating handle is good.
Extend radially outward one of in two support arms, another support arm first extend obliquely upward after again along flat-cut
Direction stretches out.
The support arm extended radially outward is simple in construction.And first extend that stretch out again along flat-cut direction can obliquely upward
To concede one piece of larger space below the support arm, this space can be used for accommodating Paracentesis needle holder component.
In summary, the present invention has the following advantages that compared with prior art：Blood back flow can be prevented.Operating physical force is big and applies
Power is convenient, operation is firm.Rational in infrastructure, packaging technology is good.
Brief description of the drawings
Fig. 1 is structural representation of a kind of syringe-type vacuum blood collector under the non-puncture state of blood-collecting needle tube in the prior art
Figure；
Fig. 2 is structural representation of a kind of syringe-type vacuum blood collector under blood-collecting needle tube puncture state in the prior art
Figure；
Fig. 3 is the structural representation of counterflow-preventing syringe-type vacuum blood collector described in the embodiment of the present invention；
Fig. 4 is the structural representation stereogram of the Paracentesis needle holder and blood sampling needle stand in Fig. 3；
Fig. 5 is the syringe cylinder structure schematic isometric in Fig. 3；
Fig. 6 is the structural representation stereogram of the syringe other direction in Fig. 3；
Fig. 7 is the blood sampling cursor slide and the structural representation stereogram of blood sampling pushing hands in Fig. 3；
Fig. 8 is the auxiliary pushing hand structure schematic isometric in Fig. 3；
Fig. 9 is knot of the counterflow-preventing syringe-type vacuum blood collector described in the embodiment of the present invention under blood-collecting needle tube puncture state
Structure schematic diagram；
Figure 10 is the check structural texture schematic diagram in Fig. 3；
Figure 11 is scheme of installation of the valve for preventing reverse-flow on blood sampling needle stand in Fig. 3；
Figure 12 is that the diaphragm type one-way valve that carries in Fig. 3 fixes ear blood sampling needle stand structure schematic diagram.
Label declaration：
11, which puncture the Paracentesis needle holder 13 of needle tubing 12, punctures the puncture pushing hands 21 blood sampling needle stand 23 of blood-collecting needle tube 22 of cursor slide 14
The seal rubber plug 42 of 4 vacuum test tube of the antidrip arc arm 25 of 241 support arm of gum cover 242 blood sampling 3 hose connector of pushing hands 41 is protected
Cover the reinforcement of 5 syringe 51
52 blood sampling chute 53 process Installation groove A 54 puncture the elastic check structures of convex clip 6 of 55 process Installation groove B of chute 56
Make 61 tongue pieces
The film 72 of 62 retainer ring, 7 valve for preventing reverse-flow 71 fixes ear
The protecgulum of 8 82 annulus of auxiliary 81 fin of pushing hands 9
More description in detail is carried out to the present invention below in conjunction with the accompanying drawings.
Embodiment
Most preferred embodiment：
Reference picture 3 and Fig. 9, counterflow-preventing syringe-type vacuum blood collector, including vascular puncture needle tubing 11, Paracentesis needle holder 12, adopt
Blood needle tubing 21, blood sampling needle stand 22, hose connector 3 and a kind of tubular syringe 5, the connection Paracentesis needle holder 12 of hose connector 3 and blood taking needle
Seat 22, vacuum test tube 4 can be plugged in the cylindrical cavity at the rear portion of syringe 5, blood-collecting needle tube 21, blood sampling needle stand 22 and blood sampling
Cursor slide, the blood sampling composition blood collection assembly of pushing hands 25, the blood collection assembly can be slidably mounted on syringe 5 with respect to syringe 5, take a blood sample
Needle tubing 21, blood sampling needle stand 22 are located in the inner chamber of syringe 5, and blood sampling cursor slide is connected through the blood sampling chute 52 on the side wall of syringe 5 is inside and outside
Blood sampling needle stand 22 and blood sampling pushing hands 25, blood sampling pushing hands 25 are located at outside syringe 5, and chute 52 of taking a blood sample is axially extending along syringe 5.Puncture needle
Pipe 11, Paracentesis needle holder 12, puncture cursor slide 13 and the puncture composition piercing assembly of pushing hands 14, for preventing from being retracted into wearing in syringe inner chamber
The check construction that pricker pipe inversely escapes syringe 6 is arranged in the syringe inner chamber before Paracentesis needle holder 12, puncture the one end of cursor slide 13 with
Paracentesis needle holder 12 is connected and integrally constructed, and the other end is connected through after puncturing chute 54 with the puncture pushing hands 14 outside syringe 5, is worn
Pierce chute 54 and be located at the side lower part of syringe 5 and axially extending along syringe 5.Also include a kind of auxiliary pushing hands 8, this auxiliary pushing hands 8 is with limit
The mode that vacuum test tube 4 processed is moved rearwards by the free degree is connected with vacuum test tube 4, and the auxiliary pushing hands 8 is located at blood sampling pushing hands 25
Rear.The relative blood sampling pushing hands 25 of the auxiliary pushing hands 8 can be distributed so that homonymy is front and rear face-to-face, can also be distributed before and after upper and lower sides.
It is distributed shown in figure for homonymy is front and rear face-to-face.
Reference picture 8, extension fin 81 is constituted outward for the auxiliary pushing hands 8 one by an annulus 82 and thereon, the internal diameter of annulus 82
Between the outer tube diameter of vacuum test tube 4 and the external diameter of sealing blood sampling tube plug protective jacket 42, through the annulus from vacuum blood collection
The tail end of pipe 4 is inserted in its body and continued forward until being touched with seal rubber plug protective jacket 42 by touching with seal rubber plug protective jacket 42
Connect.So, by annulus and the breech face of seal rubber plug protective jacket 42 touch and preceding push wing piece 81 before push away vacuum test tube.
In reference picture 6, the cylindrical cavity at the rear portion of syringe 5 stopping into face with vacuum test tube 4 and through this stop into face with
The advance for touching prevention vacuum test tube 4 of the front end face of seal rubber plug protective jacket 42.The inner chamber of syringe 5 is provided with three reinforcements
51, three reinforcements 51 are evenly distributed and axially extended, and reinforcement rear end face stops into face as vacuum test tube 4.
Stop into after the intervention of face, vacuum test tube is no longer before pushed away during clinical manipulation, needle stand of simply taking a blood sample unidirectionally is retreated, and now auxiliary is pushed away
Hand can as blood sampling pushing hands match be easy to take a blood sample pushing hands force.
Reference picture 4 and Fig. 5, the front opening of tubular syringe 5, a kind of process Installation groove A53 is from the front opening of syringe 5 and along axle
Lead to extending to blood sampling chute 52, blood sampling cursor slide is inserted from this process Installation groove A53 and up to entering blood sampling chute 52 simultaneously
Thereby, blood collection assembly is axially planted and intussusception with syringe 5, and blood sampling needle stand 22 is located at blood sampling needle stand with the junction of hose connector 3
22 leading section, the front opening of syringe 5 is covered with protecgulum 9.The process Installation groove A53 width that cracks is be slightly narrower than blood sampling chute 52
Groove width.Blood sampling chute 52 has two, is oppositely arranged on the both sides of syringe 5.
Reference picture 7, the arc arm 242 that blood sampling cursor slide bridges two support arms 241 by two support arms 241 and arc is constituted,
The one end of support arm 241 is extended out to through after corresponding blood sampling chute 52 with the blood sampling Construction integration of needle stand 22, the other end
With the Construction integration of arc arm 242.The laminating corresponding with the outer peripheral face of syringe 5 of the inner side of arc arm 242.Edge one of in two support arms 241
Extend radially outwardly, another support arm 241 stretches out along flat-cut direction again after first extending obliquely upward.And first prolong obliquely upward
Stretch along flat-cut direction to stretch out again and one piece of larger space can be conceded below the support arm 241, this space can be used for holding
Receive Paracentesis needle holder component.
Reference picture 4 and Fig. 5, a kind of process Installation groove B55 are axially extended to puncturing chute 54 from the open rearward end of syringe 5
Lead to, puncture cursor slide 13 and inserted from this process Installation groove B55 and up into puncture chute 54 and thereby, connecting with hose connector 3
The piercing assembly finished is connect axially to plant and intussusception with syringe 5.So, whole piercing assembly band is same has been connected thereto what is finished
Hose connector 3 is able to the rear end insertion from syringe and planted with syringe be connected.The process Installation groove B55 width that cracks is be slightly narrower than wearing
Pierce the groove width of chute 54.A kind of elastic convex clip 56 is provided with puncturing the tail end of chute 54, the salient point on this elastic convex clip 56 can be with
With puncturing the corresponding pit on cursor slide 13（It is not drawn into figure）Buckle, the shifting of the Paracentesis needle holder 12 after further limitation is retreated in place
It is dynamic.The elastic convex clip 56 is opened on top upwards can allow puncture cursor slide 13 to enter from process Installation groove B55 in puncture chute 54.
Reference picture 11, Figure 12, be provided with that a kind of anti-Hemostatic Oral Liquid inversely overflows on the blood channel of blood sampling needle stand is anti-reverse
Flow valve 7.The valve for preventing reverse-flow 7 is a kind of diaphragm type one-way valve.Diaphragm type one-way valve is made up of film 71 and fixed ear 72, film 71
External diameter is more than the blood channel in blood sampling needle stand 22 and its leading flank contacts laminating with the step surface in blood channel, fixed
Ear 72 pushes down film side face with blood sampling needle stand Construction integration, fixation tongue thereon, and the corresponding another side of film is in negative pressure
Swing backward forms a mitre with step surface and concedes blood channel, and diaphragm recovers by natural resiliency when pressure balance or malleation
Original shape touches closing liquid passage with step surface patch.
A kind of check construction 6 is installed, this check construction 6 is symmetrically arranged by two panels in reference picture 10, Paracentesis needle holder 12
Tongue piece 61 and retainer ring 62 are constituted, and the ring wall of the retainer ring 62 is a kind of dividing wall, tongue piece root and the integral structure of the ring wall
Make, the cavity beyond tongue piece is isolated by the ring wall to be closed, check construction is fixed on by the front of Paracentesis needle holder 12 by retainer ring 62
The inner chamber of syringe 5 leading section, two symmetrical tongue pieces 61 can be prevented with after the sliding of Paracentesis needle holder 12 after closing in a kind of pointed shape
Move back and the inversely effusion of the puncture needle tubing 11 in the inner chamber of retraction syringe 5.
When the hemostix is assembled, by the puncture needle tube assembly insertion syringe operation set inner chamber of the flexible pipe of connection well affixed in advance,
Cursor slide plug is punctured in puncture needle tube assembly and crosses process Installation groove B, and pushes the elastic convex clip of puncture runner rear end open, allows puncture cursor slide to enter
Enter and puncture chute, and puncture needle tubing simultaneously and penetrate the preceding lower end pin hole of syringe, puncture needle tube assembly continues to slide into forward foremost；
Two support arms of blood-collecting needle tube component are corresponded to respectively again and filled in process Installation groove A, then by syringe front end face opening at
Big hole moves out of the connection flexible pipe other end, affixed with blood-collecting needle tube component.From the point of view of process is entirely assembled, the Novel hemostix group
Dress is easy to be a lot, and efficiency is greatly improved.
During Clinical practice, first by vacuum test tube insert heparin tube auxiliary pushing hands annulus to protective jacket rear end face thereon with
Annulus end face offsets, and treats that hemostix is punctured into blood vessel, is seen from transparent hose after blood back, and a hand gently buttresses syringe, separately
Heparin tube is inserted into heparin tube front end face by one hand from back end of syringe to be encountered in operation set after reinforcement rear end face, and mobile mother refers to
With forefinger to pushing hands and the auxiliary pushing hands fin of taking a blood sample, thumb and forefinger pinch blood sampling pushing hands and fin, some power are used less respectively, will
The two draws close in opposite directions, untill it can not draw close again.Because heparin tube front end face props up rib, and tube protecting sleeve rear end of taking a blood sample has
Withstood by auxiliary pushing hands, heparin tube can not retreat, and blood-collecting needle tube component can be freely in pin by the slip of travelling arm thereon
Moved in tube inner chamber, thus, during as above-mentioned move toward one another, it can only move backward, so, blood-collecting needle tube is with regard to that can penetrate antidrip glue
Set and sealing blood sampling tube plug, needle point, which is penetrated in heparin tube, starts blood sampling, and blood sampling ends, and takes the blood vessel at Esmarch's bandage, puncture
Internal pressure is reduced rapidly, and now hemostix does not exit blood vessel also, and heparin tube internal pressure>Intravascular pressure, due to the intervention of valve for preventing reverse-flow
So that the blood taken will not return intravascular and occur risk of infection.
The not described part of the present embodiment is same as the prior art.
Claims (9)
1. counterflow-preventing syringe-type vacuum blood collector, including vascular puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube, blood sampling needle stand and one
Tubular syringe is planted, Paracentesis needle holder core cavity is connected with blood sampling needle stand core cavity and is used as blood sampling passage, and vacuum test tube can be plugged on
In the cylindrical cavity at syringe rear portion, it is characterised in that be provided with the blood channel of Paracentesis needle holder or needle stand of taking a blood sample a kind of anti-
The valve for preventing reverse-flow that Hemostatic Oral Liquid inversely overflows；
Blood-collecting needle tube, blood sampling needle stand and blood sampling cursor slide, blood sampling pushing hands composition blood collection assembly, the blood collection assembly is with can relative syringe
It is slidably mounted on syringe, blood-collecting needle tube, blood taking needle seat are located in syringe inner chamber, and blood sampling cursor slide is passed through in barrel sidewall
The inside and outside connection blood sampling needle stand of chute of taking a blood sample and blood sampling pushing hands, blood sampling pushing hands are located at outside syringe, and blood sampling chute is axially extending along syringe,
Also include a kind of auxiliary pushing hands, this aids in pushing hands in the way of limiting vacuum test tube and be moved rearwards by the free degree and vacuum test tube
Connection, the auxiliary pushing hands is located at the rear of blood sampling pushing hands；
Stopping into face and stopping through this into face and seal rubber plug protective jacket with vacuum test tube in the cylindrical cavity at syringe rear portion
The advance for touching prevention vacuum test tube of front end face.
2. counterflow-preventing syringe-type vacuum blood collector according to claim 1, it is characterised in that valve for preventing reverse-flow is arranged on blood sampling
It is a kind of diaphragm type one-way valve on needle stand.
3. counterflow-preventing syringe-type vacuum blood collector according to claim 2, it is characterised in that diaphragm type one-way valve is by film
Constituted with fixed ear, diaphragm external diameter is more than blood channel and its leading flank in blood sampling needle stand and the step in blood channel
Face contact laminating, fixed ear and blood sampling needle stand are affixed, and fixation tongue thereon pushes down film side face, the corresponding another side of film
Diaphragm resiles by natural resiliency and pasted with step surface when in negative pressure, swing backward concedes blood channel, pressure balance or malleation
Touch closing liquid passage.
4. counterflow-preventing syringe-type vacuum blood collector according to claim 1, it is characterised in that the counterflow-preventing syringe-type is true
Empty hemostix also includes a kind of hose connector, and Paracentesis needle holder core cavity is connected by this hose connector with blood sampling needle stand core cavity, punctured
Needle stand be it is a kind of be arranged in syringe inner chamber and the slidably component of displacement, for the puncture needle tubing for preventing from being retracted into syringe inner chamber
The check construction of reverse effusion syringe is arranged in the syringe inner chamber before Paracentesis needle holder.
5. counterflow-preventing syringe-type vacuum blood collector according to claim 4, it is characterised in that check construction is by 2-5 pieces
Tongue piece and dividing wall composition that is along the circumferential direction uniform and axially extending, tongue piece root is connected with the dividing wall, dividing wall
Isolation is enclosed in the cavity beyond tongue piece, and a plurality of tongue pieces form tip-angled shape or cone tip shape, tip-angled shape or cone angle after closing up
Shape is relative with receding into the needle tip in syringe inner chamber backwards.
6. counterflow-preventing syringe-type vacuum blood collector according to claim 1, it is characterised in that the counterflow-preventing syringe-type is true
Empty hemostix also includes a kind of puncture cursor slide, punctures pushing hands and puncture chute, punctures needle tubing, Paracentesis needle holder, punctures cursor slide
The piercing assembly that a kind of relative syringe is slided is constituted with pushing hands is punctured, cursor slide one end is punctured and is connected with Paracentesis needle holder or integral structure
Make, the other end be connected through after puncturing chute with the puncture pushing hands outside syringe, puncture chute positioned at syringe side lower part and along syringe
It is axially extending.
7. counterflow-preventing syringe-type vacuum blood collector according to claim 6, it is characterised in that tubular syringe front opening,
A kind of process Installation groove B or from syringe front end or from back end of syringe axially extend to puncture chute lead to, puncture slide
Arm from this process Installation groove B insertions and punctures chute and thereby until entering, be connected with hose connector the piercing assembly that finishes and
Syringe is axially planted and intussusception, and syringe front opening is covered with protecgulum.
8. counterflow-preventing syringe-type vacuum blood collector according to claim 1, it is characterised in that tubular syringe front opening,
A kind of process Installation groove A or from syringe front end or from back end of syringe axially extend to blood sampling chute lead to, blood sampling slide
Arm is inserted from this process Installation groove A and up into blood sampling chute and thereby, blood collection assembly axially plants simultaneously intussusception with syringe, adopts
The junction of blood needle stand and hose connector or before the leading section of blood sampling needle stand or the sidepiece positioned at blood sampling needle stand, syringe
End opening is covered with protecgulum.
9. counterflow-preventing syringe-type vacuum blood collector according to claim 8, it is characterised in that blood sampling chute has two,
The both sides of syringe are oppositely arranged on, the arc arm that blood sampling cursor slide bridges two support arms by two support arms and arc is constituted, supported
Needle stand is affixed or Construction integration with blood sampling for arm one end, the other end extend out to through after corresponding blood sampling chute with arc arm
Laminating corresponding with syringe outer peripheral face on the inside of connection or Construction integration, arc arm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2013/074251 WO2014169430A1 (en) | 2013-04-16 | 2013-04-16 | Backflow-prevention needle cylinder type vacuum blood sampler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105142521A CN105142521A (en) | 2015-12-09 |
| CN105142521B true CN105142521B (en) | 2017-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380075603.1A Active CN105142521B (en) | 2013-04-16 | 2013-04-16 | Counterflow-preventing syringe-type vacuum blood collector |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105142521B (en) |
| WO (1) | WO2014169430A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108324291B (en) * | 2018-03-24 | 2023-12-22 | 曹春荣 | Blood sample collection anti-backflow valve device and blood taking needle |
| CN109567828B (en) * | 2019-01-30 | 2023-09-19 | 天津哈娜好医材有限公司 | Needleless blood collection needle and use method thereof |
| CN110840465B (en) * | 2019-11-30 | 2022-08-26 | 中国人民解放军陆军军医大学第一附属医院 | Automatic retraction blood taking needle |
| CN119700107A (en) * | 2025-03-03 | 2025-03-28 | 上海交通大学医学院附属瑞金医院 | A safe arterial blood sampling device |
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| US6379337B1 (en) * | 1998-12-22 | 2002-04-30 | Owais Mohammad M. B. B. S. | Retractable safety needles for medical applications |
| CN201073308Y (en) * | 2007-07-12 | 2008-06-18 | 王新花 | Blood sampling tube for clinical test |
| CN102783954A (en) * | 2012-09-04 | 2012-11-21 | 山东新华安得医疗用品有限公司 | Mono-directional inverse-inhibiting safe blood taking needle |
| CN202776326U (en) * | 2012-09-03 | 2013-03-13 | 张建铭 | Needle bed assembly of syringes type vacuum blood collection device |
| CN202776320U (en) * | 2012-08-02 | 2013-03-13 | 张建铭 | Syringe type vacuum blood collecting device |
| CN203263406U (en) * | 2013-04-16 | 2013-11-06 | 张建铭 | Anti-reflux needle-cylinder type vacuum blood collector |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030163096A1 (en) * | 2002-02-28 | 2003-08-28 | Becton, Dickinson And Company | Shieldable fluid collection set |
| US20090216154A1 (en) * | 2008-02-21 | 2009-08-27 | Bencha International Group. Inc | Automatically retractable safety blood sampler |
| CN203263404U (en) * | 2013-04-16 | 2013-11-06 | 张建铭 | Syringe type vacuum blood collector with sliding blood collection needle seat |
| CN203263405U (en) * | 2013-04-16 | 2013-11-06 | 张建铭 | Syringe-type vacuum hemostix for pushing blood collection tube |
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2013
- 2013-04-16 WO PCT/CN2013/074251 patent/WO2014169430A1/en not_active Ceased
- 2013-04-16 CN CN201380075603.1A patent/CN105142521B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6379337B1 (en) * | 1998-12-22 | 2002-04-30 | Owais Mohammad M. B. B. S. | Retractable safety needles for medical applications |
| CN201073308Y (en) * | 2007-07-12 | 2008-06-18 | 王新花 | Blood sampling tube for clinical test |
| CN202776320U (en) * | 2012-08-02 | 2013-03-13 | 张建铭 | Syringe type vacuum blood collecting device |
| CN202776326U (en) * | 2012-09-03 | 2013-03-13 | 张建铭 | Needle bed assembly of syringes type vacuum blood collection device |
| CN102783954A (en) * | 2012-09-04 | 2012-11-21 | 山东新华安得医疗用品有限公司 | Mono-directional inverse-inhibiting safe blood taking needle |
| CN203263406U (en) * | 2013-04-16 | 2013-11-06 | 张建铭 | Anti-reflux needle-cylinder type vacuum blood collector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105142521A (en) | 2015-12-09 |
| WO2014169430A1 (en) | 2014-10-23 |
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Effective date of registration: 20230911 Address after: S5 # Factory Building, Medical Equipment Industrial Park, Industrial New Area, No. 66 Tingzhou Avenue South Road, Cewu Town, Changting County, Longyan City, Fujian Province, 366309 Patentee after: Conlite (Changting) Medical Equipment Co.,Ltd. Address before: No. 27, Lane 45, Kaohsiung Road, Huangpu District, Shanghai, 200011 Patentee before: Zhang Jianming |