CN105142521A - Backflow-prevention needle cylinder type vacuum blood sampler - Google Patents
Backflow-prevention needle cylinder type vacuum blood sampler Download PDFInfo
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- CN105142521A CN105142521A CN201380075603.1A CN201380075603A CN105142521A CN 105142521 A CN105142521 A CN 105142521A CN 201380075603 A CN201380075603 A CN 201380075603A CN 105142521 A CN105142521 A CN 105142521A
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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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150221—Valves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Animal Behavior & Ethology (AREA)
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
Disclosed is a backflow-prevention needle cylinder type vacuum blood sampler, comprising a blood vessel-puncturing needle tube (11), a puncturing needle seat (12), a blood-sampling needle tube (21), a blood-sampling needle seat (22) and a cylinder-shaped needle cylinder (5). The core cavity of the puncturing needle seat (12) is in communication with that of the blood-sampling needle seat (22) and serves as a blood-sampling channel, and a vacuum blood-sampling tube (4) can be inserted into a cylinder-shaped empty cavity at the back of the needle cylinder (5). The main point of composition of the blood sampler lies in that a backflow-prevention valve (7) for preventing blood from reversely over brimming is provided on the blood channel of the puncturing needle seat (12) or of the blood-sampling needle seat (22). Compared with the prior art, the vacuum blood sampler can prevent blood from backflowing, has a large operating force, can easily apply the force, is stable in operation, reasonable in structure and the manufacturability of the assembly is good.
Description
Technical field
The present invention relates to vacuum blood collection apparatus, particularly a kind of counterflow-preventing syringe-type vacuum blood collector outside a kind of human body in clinical treatment.
Background technology
A kind of syringe-type vacuum blood collector of the prior art is as shown in Fig. 1, Fig. 2, including vascular puncture needle tubing 11, Paracentesis needle holder 12
, blood-collecting needle tube 21, blood sampling needle stand 22, hose connector 3, vacuum blood collection tube 4 and a kind of transparent tubular syringe 5.Paracentesis needle holder 12 is located at the front end of syringe 5, can be fixed on syringe 5
On；When for needle point protect it is safety-type when, the Paracentesis needle holder can be slided with respect to syringe 5.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, syringe 5
The cylindrical cavity rear end at rear portion is opened, and vacuum blood collection 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 clamps syringe 5
, another hand again by the front end of vacuum blood collection tube 4 insert syringe cylindrical cavity in, firmly insert inward, allow blood-collecting needle tube 21 pass through vacuum blood collection tube seal rubber plug 41
, reach blood sampling purpose.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, and the antidrip gum cover 23 is coated on blood-collecting needle tube 21
On needle point；Two be that needle tubing passes through vacuum blood collection tube seal rubber plug 41
Frictional resistance.For overcome two resistances and it is preceding push away the operating physical force of vacuum blood collection tube needed for it is inevitable larger, vacuum blood collection tube is so easily produced to rock and the unstable phenomenon of syringe clamping, needle point scuffing endangium can all be directly resulted in or wear out vascular risk by either rocking or clamp shakiness, both of which makes blood vessel be further compromised, and easily triggers inflammation.
It is not enough that the prior art also has one in Clinical practice, on packaging technology, the puncture needle component and one of needle assemblies of taking a blood sample of flexible pipe need to will be connected, first fit into tubular syringe inner chamber, and fix stably, another component is reassembled, because tubular syringe inner chamber is than narrow, packaging technology certainly will be brought bad and inefficiency problem.
The negative pressure amount of vacuum blood collection tube is set according to blood sampling volume.In Clinical practice, due to need to first prick upper Esmarch's bandage, and rise in the Esmarch's bandage limbs lower end intravascular pressure tightened, blood is flowed into negative pressure state vacuum blood collection tube after blood taking needle intervention ulnar vein, and preset negative pressure exhausts blood sampling and terminated, now, intravascular pressure
=vacuum blood collection tube internal pressure.Blood sampling ends, and takes Esmarch's bandage, intravascular pressure is reduced rapidly, comes back to normal pressure, and now hemostix does not exit blood vessel also, and heparin tube internal pressure>
Intravascular pressure, it is possible to cause the blood taken to return intravascular and occur risk of infection.
Invention is constituted
It is an object of the invention to overcoming weak point of the prior art, and provide a kind of blood back flow that prevents
Counterflow-preventing 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 and rocks 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
More reasonable structure and packaging technology preferably slide 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 connects with blood sampling needle stand core cavity and is used as blood sampling passage, vacuum blood collection tube can be plugged in the cylindrical cavity at syringe rear portion, and its composition is characterized by：The valve for preventing reverse-flow that a kind of anti-Hemostatic Oral Liquid inversely overflows is provided with the blood channel of Paracentesis needle holder or needle stand of taking a blood sample.
So, it can prevent blood sampling from finishing, prick blood band release moment, vacuum blood collection tube is with respect to blood back flow caused by the moment malleation of human body blood sampling site.
No matter Paracentesis needle holder is integrally fixed on syringe, and still can make sliding retrogressing with respect to syringe can use this technical scheme of the present invention；Equally, needle stand of no matter taking a blood sample is integrally fixed on syringe, still can be made sliding retrogressing with respect to syringe and be 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 is more than the blood channel in blood sampling needle stand and its leading flank contacts laminating with the step surface in blood channel, fixed ear and blood sampling needle stand are affixed, fixation tongue thereon pushes down film side face, diaphragm resiles by natural resiliency when in negative pressure, swing backward concedes blood channel, pressure balance or malleation to the corresponding another side of film and step surface pastes and touches closing liquid passage.
So, during malleation, even check valve tapping side fluid pressure is once more than check valve feed liquor body side pressure, diaphragm is pressurized and is brought into close contact with needle stand inner chamber baseplane, and sealing liquid passage prevents liquid reverse flow.
The counterflow-preventing syringe-type vacuum blood collector also includes a kind of hose connector, and Paracentesis needle holder core cavity is connected with blood sampling needle stand core cavity 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, the check that the puncture needle tubing for preventing from being retracted into syringe inner chamber inversely escapes syringe is constructed and is 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 is limited wherein not to escape and causes to infect in order to avoid stabbing other people.
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 by 2-5
Piece is along the circumferential direction uniform and the tongue piece and the dividing wall composition that axially extend, tongue piece root is connected with the dividing wall, dividing wall isolation is enclosed in the cavity beyond tongue piece, a plurality of tongue pieces form tip-angled shape or cone tip shape after closing up, and 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 piece forms cone tip shape after closing up, either tip-angled shape or cone tip shape all have the effect for closing up closure, not only needle point is difficult to from closing up the point of closure, inversely pass at angle, and this closure and reverse pressure effect of closing up makes it close up the isolation closing of the point of closure, angle construction and dividing wall to the cavity beyond tongue piece all the more, check construction is had preliminary counterflow-preventing effect concurrently.So as to be complemented each other with valve for preventing reverse-flow, make counterflow-preventing effect more preferable.
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 end is punctured to be connected with Paracentesis needle holder or Construction integration, the other end is connected through after puncturing chute with the puncture pushing hands outside syringe, is punctured chute and is located at syringe side lower part and axially extending along syringe.
Tubular syringe front opening, a kind of process Installation groove B
Or from syringe front end or axially extend to puncturing chute and lead to from back end of syringe, cursor slide is punctured from this process Installation groove B
Insert and until into puncture chute and thereby, the piercing assembly finished is connected with hose connector simultaneously intussusception is axially planted with syringe, syringe front opening is covered with protecgulum.
So, whole piercing assembly band is able to insert and plant with syringe from the front end of syringe or rear end to be connected with the hose connector finished has been connected thereto, 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, this mounting process groove is opened by this elastic deformation when mounted
B, filled in puncture cursor slide, and the groove width and the arm for puncturing cursor slide that puncture chute are wide corresponding, so, process Installation groove B
Process Installation groove B can be closed even without in plug afterwards as the prominent card of elasticity of the puncture cursor slide of the smooth sliding in chute is punctured again.
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 with can relative syringe be slidably mounted on syringe, blood-collecting needle tube, blood taking needle seat are located in syringe inner chamber, cursor slide of taking a blood sample connects blood sampling needle stand and blood sampling pushing hands through the blood sampling chute in barrel sidewall is inside and outside, pushing hands of taking a blood sample is located at outside syringe, and blood sampling chute is axially extending along syringe.
During Clinical practice, puncture terminate after vacuum blood collection tube in front thimble tube inner chamber while promote blood sampling pushing hands backward, not only operating physical force is big but also force is convenient for such two-way function operating physical force, operation is firm.
Also include a kind of auxiliary pushing hands, this auxiliary pushing hands is connected in the way of limiting vacuum blood collection tube and be moved rearwards by the free degree with vacuum blood collection tube, and 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 to draw close operation and can easily carry out blood sampling and penetrate operation respectively with the finger of one hand.
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 inserted in its body from vacuum blood collection tube tail end through the annulus and continued forward until being touched with seal rubber plug protective jacket by touching with seal rubber plug protective jacket between heparin tube outer tube diameter and sealing blood sampling tube plug protective jacket external diameter.
So, by annulus and seal rubber plug protective jacket breech face touch and preceding push wing piece obtain before pushed away vacuum blood collection tube.
In the cylindrical cavity at syringe rear portion stopping into face with vacuum blood collection tube and through this stop into face with
The advance for touching prevention vacuum blood collection tube of seal rubber plug protective jacket front end face.
Stop into face intervention after, vacuum blood collection tube is no longer before pushed away during clinical manipulation, simply take a blood sample needle stand unidirectionally retreat, now aid in 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, and reinforcement rear end face stops into face as vacuum blood collection tube.
Tubular syringe front opening, a kind of process Installation groove A
Or from syringe front end or axially extend to blood sampling chute and lead to from back end of syringe, blood sampling cursor slide is from this process Installation groove A
Insert and until entering blood sampling chute and thereby, blood collection assembly is axially planted and intussusception with syringe, the junction of blood sampling needle stand and hose connector or positioned at the leading section of blood sampling needle stand or the sidepiece positioned at needle stand of taking a blood sample, syringe front opening is covered with protecgulum.
Syringe front opening, implements the connection of hose connector and blood sampling needle stand under the visual situation of eyesight and under looser installation environment.And mounting process groove A
Setting, be able to allow blood collection assembly to assemble to finish in advance and assembled again with syringe, greatly improve packaging technology.
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, this mounting process groove is opened by this elastic deformation when mounted
A, filled in blood sampling cursor slide, and the groove width for chute of taking a blood sample and the arm for cursor slide of taking a blood sample are wide corresponding, so, process Installation groove A
Process Installation groove A can be closed even without in plug afterwards as the prominent card of elasticity of the blood sampling cursor slide of the smooth sliding in blood sampling chute again.
Blood sampling chute has two, it is oppositely arranged on the both sides of syringe, the arc arm that blood sampling cursor slide bridges two support arms by two support arms and arc is constituted, needle stand is affixed or Construction integration with blood sampling for support arm one end, and the other end is extended out to be connected or Construction integration through after corresponding blood sampling chute with arc arm.
So, two support arms or so set and arc arm outside syringe, blood sampling needle stand in syringe, three connection or Construction integration into closed-loop configuration, integral rigidity is good, and left and right support arm in turn ensure that blood collection assembly sliding stability.
Laminating corresponding with syringe outer peripheral face on the inside of arc arm.
So, after assembling is finished, blood collection assembly can sliding smooth with respect to syringe not only with syringe one integrated mass and but also make blood collection assembly with some sliding dampings, operating handle is good.
Extend radially outward one of in two support arms, another support arm stretches out along flat-cut direction again after first extending obliquely upward.
The support arm extended radially outward is simple in construction.And one piece of larger space can be conceded below the support arm by first extending along flat-cut direction to stretch out again obliquely upward, 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 force is convenient, it is firm to operate.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
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
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 structural representation of the counterflow-preventing syringe-type vacuum blood collector described in the embodiment of the present invention under blood-collecting needle tube puncture state
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 antidrip gum cover of needle stand 23 of blood-collecting needle tube 22 of cursor slide 14
The reinforcement of 5 syringe of the arc arm 25 of 241 support arm 242 blood sampling pushing hands 3 hose connector, 4 vacuum blood collection tube, 41 seal rubber plug, 42 protective jacket 51
52 blood sampling chute 53 process Installation groove A 54 puncture the elastic check of convex clip 6 constructions of 55 process Installation groove B of chute 56
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, blood-collecting needle tube 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 sampling needle stand 22, vacuum blood collection tube 4 can be plugged on syringe 5
In the cylindrical cavity at rear portion, 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 at syringe 5 with respect to syringe 5
On, blood-collecting needle tube 21, blood sampling needle stand 22 are located in the inner chamber of syringe 5, and blood sampling cursor slide is through the inside and outside connection blood sampling needle stand 22 of blood sampling chute 52 on the side wall of syringe 5 and blood sampling pushing hands 25, pushing hands of taking a blood sample
25 are located at outside syringe 5, and blood sampling chute 52 is axially extending along syringe 5.Needle tubing 11, Paracentesis needle holder 12 are punctured, cursor slide 13 is punctured and punctures pushing hands 14
Piercing assembly is constituted, the check construction 6 that the puncture needle tubing for preventing from being retracted into syringe inner chamber inversely escapes syringe is arranged in the syringe inner chamber before Paracentesis needle holder 12, punctures the one end of cursor slide 13 and Paracentesis needle holder 12
Connect and integrally construct, the other end is connected through after puncturing chute 54 with the puncture pushing hands 14 outside syringe 5, puncture chute 54 positioned at the side lower part of syringe 5 and along syringe 5
It is axially extending.Also include a kind of auxiliary pushing hands 8, this auxiliary pushing hands 8 is connected in the way of limiting vacuum blood collection tube 4 and be moved rearwards by the free degree with vacuum blood collection 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 is inserted in its body from the tail end of vacuum blood collection tube 4 through the annulus and continued forward until being touched with seal rubber plug protective jacket 42 by touching with seal rubber plug protective jacket 42 between the outer tube diameter of vacuum blood collection tube 4 and the external diameter of sealing blood sampling tube plug protective jacket 42.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 blood collection tube.
In reference picture 6, the cylindrical cavity at the rear portion of syringe 5 stopping into face with vacuum blood collection tube 4 and through this stop into face with
The advance for touching prevention vacuum blood collection 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, and three reinforcements 51 are evenly distributed and axially extended, and reinforcement rear end face stops into face as vacuum blood collection tube 4.Stop into face intervention after, vacuum blood collection tube is no longer before pushed away during clinical manipulation, simply take a blood sample needle stand unidirectionally retreat, now aid in pushing hands 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 syringe 5
Front opening and axially extending to blood sampling chute 52 leads to, and blood sampling cursor slide is from this process Installation groove A53 insertions and until enters blood sampling chute 52 and thereby, blood collection assembly and syringe 5
Axially plant and intussusception, the junction of blood sampling needle stand 22 and hose connector 3 is located at the leading section of blood sampling needle stand 22, and the front opening of syringe 5 is covered with protecgulum 9.Process Installation groove A53
Crack width 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, support arm
241 one end with blood sampling the Construction integration of needle stand 22, the other end extend out to through after corresponding blood sampling chute 52 with the Construction integration of arc arm 242.The inner side of arc arm 242 and syringe 5
Outer peripheral face correspondence is fitted.Extend radially outward one of in two support arms 241, another support arm 241
Stretch out again along flat-cut direction after first extending obliquely upward.And first extend that stretch out again along flat-cut direction can be in the support arm 241 obliquely upward
One piece of larger space is conceded in lower section, and this space can be used for accommodating 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, the piercing assembly finished and syringe 5 are connected with hose connector 3
Axially plant and intussusception.So, whole piercing assembly band is able to the rear end insertion from syringe and planted with syringe be connected with the hose connector 3 finished has been connected thereto.The process Installation groove B55 width that cracks is be slightly narrower than puncture chute 54
Groove width.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 puncturing cursor slide 13
On corresponding pit（It is not drawn into figure）Buckle, the movement of the Paracentesis needle holder 12 after further limitation is retreated in place.The elastic convex clip 56 is opened on top upwards can allow puncture cursor slide 13 from process Installation groove B55
Into in puncture chute 54.
Reference picture 11, Figure 12, the valve for preventing reverse-flow 7 that a kind of anti-Hemostatic Oral Liquid inversely overflows is provided with the blood channel of blood sampling needle stand.The valve for preventing reverse-flow
7 be a kind of diaphragm type one-way valve.
Diaphragm type one-way valve is made up of film 71 and fixed ear 72, the external diameter of film 71 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 and blood sampling needle stand Construction integration, fixation tongue thereon pushes down film side face, the corresponding another side of film swing backward in negative pressure forms a mitre with step surface and concedes blood channel, and diaphragm resiles by natural resiliency when pressure balance or malleation and step surface pastes and touches closing liquid passage.
A kind of check construction 6 is installed, this check construction 6 is made up of the symmetrically arranged tongue piece 61 of two panels and retainer ring 62 in reference picture 10, Paracentesis needle holder 12, the ring wall of the retainer ring 62 is a kind of
Cavity beyond dividing wall, tongue piece root and the ring wall Construction integration, tongue piece is isolated by the ring wall to be closed,
Check is constructed to the leading section for the inner chamber of syringe 5 for being fixed on the front of Paracentesis needle holder 12 by retainer ring 62, two symmetrical tongue pieces 61 can be prevented to slide with Paracentesis needle holder 12 and retreated and the puncture needle tubing 11 in the inner chamber of retraction syringe 5 is inversely escaped after closing in a kind of pointed shape.
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 push the elastic convex clip of puncture runner rear end open, allow puncture cursor slide to 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 the connection flexible pipe other end is moved out by the big hole at syringe front end face opening, it is affixed with blood-collecting needle tube component.From the point of view of process is entirely assembled, the Novel hemostix simple and convenient assembly is a lot, and efficiency is greatly improved.
During Clinical practice, annulus to protective jacket rear end face thereon and the annulus end face that vacuum blood collection tube first is inserted into heparin tube auxiliary pushing hands offsets, treat that hemostix is punctured into blood vessel, seen from transparent hose after blood back, one hand gently buttresses syringe, heparin tube is inserted into heparin tube front end face by another hand from back end of syringe to be encountered in operation set after reinforcement rear end face, mobile mother refers to and 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 respectively, some power is used less, the two is drawn 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 by aiding in pushing hands to withstand, heparin tube can not be retreated, and blood-collecting needle tube component is slided by travelling arm thereon and freely can moved in syringe 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 gum cover and sealing blood sampling tube plug, needle point, which is penetrated in heparin tube, starts blood sampling, and blood sampling ends
Taking the intravascular pressure at Esmarch's bandage, puncture reduces rapidly, and now hemostix does not exit blood vessel also, and heparin tube internal pressure>
Intravascular pressure, because the intervention of valve for preventing reverse-flow make it 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 (11)
- 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 connects with blood sampling needle stand core cavity and is used as blood sampling passage, vacuum blood collection tube can be plugged in the cylindrical cavity at syringe rear portion, characterized in that, being provided with the valve for preventing reverse-flow that a kind of anti-Hemostatic Oral Liquid inversely overflows on the blood channel of Paracentesis needle holder or needle stand of taking a blood sample.
- According to claim 1 Described counterflow-preventing syringe-type vacuum blood collector, it is characterised in that valve for preventing reverse-flow is arranged on blood sampling needle stand, is a kind of diaphragm type one-way valve.
- Counterflow-preventing syringe-type vacuum blood collector according to claim 2, it is characterized in that, diaphragm type one-way valve is made up of film and fixed ear, diaphragm external diameter is more than the blood channel in blood sampling needle stand and its leading flank contacts laminating with the step surface in blood channel, fixed ear and blood sampling needle stand are affixed, fixation tongue thereon pushes down film side face, diaphragm resiles by natural resiliency when in negative pressure, swing backward concedes blood channel, pressure balance or malleation to the corresponding another side of film and step surface pastes and touches closing liquid passage.
- Counterflow-preventing syringe-type vacuum blood collector according to claim 1, it is characterised in that the counterflow-preventing syringe-type vacuum blood collector also includes a kind of hose connector,Paracentesis needle holder core cavity is connected with blood sampling needle stand core cavity 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, the check that the puncture needle tubing for preventing from being retracted into syringe inner chamber inversely escapes syringe is constructed and is arranged in the syringe inner chamber before Paracentesis needle holder.
- Counterflow-preventing syringe-type vacuum blood collector according to claim 4, it is characterised in that check construction is by 2-5 Piece is along the circumferential direction uniform and the tongue piece and the dividing wall composition that axially extend, tongue piece root is connected with the dividing wall, dividing wall isolation is enclosed in the cavity beyond tongue piece, a plurality of tongue pieces form tip-angled shape or cone tip shape after closing up, and tip-angled shape or cone angle shape are relative with receding into the needle tip in syringe inner chamber backwards.
- According to claim 1 Described counterflow-preventing syringe-type vacuum blood collector, it is characterized in that, 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 end is punctured to be connected with Paracentesis needle holder or Construction integration, the other end is connected through after puncturing chute with the puncture pushing hands outside syringe, is punctured chute and is located at syringe side lower part and axially extending along syringe.
- 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 axially extend to puncturing chute and lead to from back end of syringe, cursor slide is punctured from this process Installation groove B Insert and until into puncture chute and thereby, the piercing assembly finished is connected with hose connector simultaneously intussusception is axially planted with syringe, syringe front opening is covered with protecgulum.
- According to claim 1 Described counterflow-preventing syringe-type vacuum blood collector, it is characterized in that, blood-collecting needle tube, blood sampling needle stand and blood sampling cursor slide, pushing hands of taking a blood sample constitutes blood collection assembly, the blood collection assembly with can relative syringe be slidably mounted on syringe, blood-collecting needle tube, blood taking needle seat is located in syringe inner chamber, cursor slide of taking a blood sample connects blood sampling needle stand and blood sampling pushing hands through the blood sampling chute in barrel sidewall is inside and outside, pushing hands of taking a blood sample is located at outside syringe, chute of taking a blood sample is axially extending along syringe, also include a kind of auxiliary pushing hands, this auxiliary pushing hands is connected in the way of limiting vacuum blood collection tube and being moved rearwards by the free degree with vacuum blood collection tube, the auxiliary pushing hands is located at the rear of blood sampling pushing hands.
- According to claim 1 Described counterflow-preventing syringe-type vacuum blood collector, it is characterised in that there is stopping into face and stopping the advance for touching prevention vacuum blood collection tube into face and seal rubber plug protective jacket front end face through this for vacuum blood collection tube in the cylindrical cavity at syringe rear portion.
- 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 axially extend to blood sampling chute and lead to from back end of syringe, blood sampling cursor slide is from this process Installation groove A Insert and until entering blood sampling chute and thereby, blood collection assembly is axially planted and intussusception with syringe, the junction of blood sampling needle stand and hose connector or positioned at the leading section of blood sampling needle stand or the sidepiece positioned at needle stand of taking a blood sample, syringe front opening is covered with protecgulum.
- According to claim 10 Described counterflow-preventing syringe-type vacuum blood collector, it is characterized in that, blood sampling chute has two, it is oppositely arranged on the both sides of syringe, the arc arm that blood sampling cursor slide bridges two support arms by two support arms and arc is constituted, needle stand is affixed or Construction integration with blood sampling for support arm one end, and the other end is extended out to be connected or Construction integration through after corresponding blood sampling chute with arc arm, corresponding with syringe outer peripheral face on the inside of arc arm to fit.
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 true CN105142521A (en) | 2015-12-09 |
| CN105142521B CN105142521B (en) | 2017-07-14 |
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| 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 |
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| Country | Link |
|---|---|
| CN (1) | CN105142521B (en) |
| WO (1) | WO2014169430A1 (en) |
Families Citing this family (3)
| 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 |
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| US6379337B1 (en) * | 1998-12-22 | 2002-04-30 | Owais Mohammad M. B. B. S. | Retractable safety needles for medical applications |
| US20030163096A1 (en) * | 2002-02-28 | 2003-08-28 | Becton, Dickinson And Company | Shieldable fluid collection set |
| CN201073308Y (en) * | 2007-07-12 | 2008-06-18 | 王新花 | Blood sampling tube for clinical test |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105142521B (en) | 2017-07-14 |
| 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 |