CN110013257A

CN110013257A - Safe hemostix is triggered under four cellular types

Info

Publication number: CN110013257A
Application number: CN201910417251.2A
Authority: CN
Inventors: 王振民; 刘玉花; 王伟; 王鸿; 王浩阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2019-07-16

Abstract

The invention discloses safe hemostix, including housing, percussion set, blood taking needle and elastic firing member are triggered under a kind of four cellular types；A pair positioned opposite is provided on sleeve side wall for assembling the percussion perception solution lockhole that the assembly location hole of factory time limit position is unlocked with percussion set after a pair of of percussion；Percussion set is elastic opening set, and percussion, which is put on, is equipped with a pair of of unlock protrusion；The open end of housing is stretched out in percussion set lower end, and blood taking needle lateral surface is equipped with a pair of of guide protrusions；Blood taking needle, which is in, to be remain stationary under cock, fire to cover in assembly location hole, and blood taking needle is supported in the upper end of percussion set；Blood taking needle is under cock, and two, which unlock raised uplink, slides into respectively in two percussions perception solution lockhole, resets percussion set spreading, blood taking needle is moved along percussion set towards needle outlet direction.The present invention is significant to reduce manufacturing cost and production efficiency guaranteeing that components are reduced to four on the basis of the comprehensive blood sampling index of items is all better than existing market various products.

Description

Safe hemostix is triggered under four cellular types

Technical field

It takes a blood sample the invention belongs to medical and clinical and chemically examines the medical instruments field of detection, more particularly to triggered under a kind of four cellular types Safe hemostix.

Background technique

" disposable safe hemostix " is also referred to as " disposable safe blood taking needle ", is countries in the world medicine, sends for clinical end The main blood taking instrument of blood sampling chemical examination.Easy to operate because it is with easy to carry, thoroughly, aseptic is strong for disinfection, and can avoid doctor The advantages that source sex-intergrade is infected, therefore since the advent of the world, receive will be widely welcomed for doctor and patient.But as each of main product Kind " lower to trigger disposable safe hemostix ", the first element in addition to all can preferably complete blood sampling, and all have respective Advantage speciality, this is also the major reason that every kind of product has certain occupation rate of market.But to develop from society, science and technology will be into It walks, is said in the angle that product will be perfect, all there is also a little shortcomings for every kind of existing product or Patent design.This includes Respectively in the industry also all there is different beauty though all having major function in the product of enterprise, the patented product also researched and developed including me Middle insufficient or flaw.Because of each specific research staff, objectively saying all has certain thinking limitation, knowledge limitation It with experience limitation, often attends to one thing and lose sight of another and loses and gains, this is also fully consistent with the evolutional view of development；Along with " disposable The Special use attribute of safe hemostix ", i.e., under the premise of guaranteeing blood sampling function and convenient for medical staff's operation, also requiring should Product must have extremely low market competition price, therefore it is required that the lower its manufacturing cost the better, the simpler structure the better, component More fewer, better (lose cost advantage when component is equal to 7 or greater than 7 and can not participate in market competition), and because of group It dresses up this and occupies very important position in the product, therefore the simpler assembling the better, The faster the better for speed, in short, one It is a that structure is required to be simplified to ultimate attainment medical disposable material product, in the case where New Parent mustn't be increased, also want and therefore more It kind of function and requires, it is too difficult too difficult, positive institute really that realization, which advanced optimizes and designs and reconfigure, are as follows: " ridge is just under Mo Yan Without difficulty, earns passerby's mistake and like.Just entering in the circle of the Wanshan Mountain, a mountain is let off a mountain and blocked ".

It is analyzed as follows below for the status of hemostix:

One, existing various lower triggering safe hemostixes, not only there is pressure size under triggering when taking a blood sample operation influences The positive relationship for tenderness of taking a blood sample, there is also the senses of touch of medical staff when percussion to perceive bad or unaware general character, especially in ring Occur instinct self-insurance in ill-matched situation that border is bad or patient's fear is mismatched or affected children ranges are cry and screamed draws back finger act Dynamic, when medical staff being caused to be difficult to perceive light pressure blood sampling percussion success or not phenomenon often will appear blood taking needle and not fire also But because medical staff can not perceive whether percussion process is completed, the termination with regard to blindness is taken a blood sample, and blood taking needle is made to prematurely pop out blood sampling portion Position and cause this time take a blood sample failure.In addition it if firmly depressed fast, is disposably fired successfully though can guarantee, but can cause to hit Tenderness and the serious pitting modification pain of skin (describe, under the premise of blood taking needle constant mass, by blood sampling portion from physics under hair net The pressure size of position depends on the pushing speed of blood taking needle), and most products of reality are to guarantee to fire successfully, percussion is cased with Meaning also retains a certain distance with housing lower end surface after being designed to percussion set retraction, i.e., tangible percussion set return and housing lower end surface Maintain an equal level, the conjunction of the area of two sets of lower ends is also limited, and is also limited to the pitting modification pain that exertin pushing generates is eliminated It is even negligible.Again because the anatomicophysiological evolution of finger pulp needs, evolved again on limited finger pulp area as protuberance Shape causes and forms a kind of widened point-like contacts by contactant, this is also to be difficult to eliminate the pitting change that exertin pushes generation The another odjective cause of type pain.Or unaware when because of percussion, it is finished although An Caizhen is fired already, medical staff also suppresses peace It adopts needle not put, and further results in by the meaningless tenderness of blood sampling site.In addition, the clinical observation through many years is learnt, for children Or infant's blood sampling, cause the reversed resistance to blood taking needle too small because its finger pulp is too tender, if exertin pushes blood taking needle and will go out The now too deep phenomenon of apparent inserting needle, consequence, which not only will appear lower tenderness, there is also pin hole pain up to 1-12 hours, and right When the finger pulp blood sampling of adult especially physical labourer, must just exert oneself depressed fast, otherwise will lead because inserting needle is excessively shallow Cause blood sampling volume deficiency or even not bleeding.So medical staff how to be made to adopt from existing passive blood sampling distillation for active Blood and in blood sampling, whether the lower pressure of blood taking needle be greatly it is small, speed be fastly it is slow, whether environment quiet, and whether patient Cooperation can accomplish accurate perception when 100% percussion, and according to chemical examination needed for the age of patient, gender, occupation, this blood sampling The blood sampling volume size of project and the concrete condition of finger pulp skin, and according to accurate percussion perceptional function, using different pushings Power pushes the length of speed and pressing time to realize optimal blood sampling effect, and just particularly important and enterprise is urgently to be solved Realistic problem.

Principle analysis: the triggering mode of existing various lower triggering safe blood-taking needles, is all in blood taking needle housing lower end Percussion set first with finger pulp loss skin contact, and force in blood taking needle housing and by blood taking needle housing by pushing power be applied to Percussion is put on, because finger pulp loss skin is the fulcrum force that blood sampling site is again percussion set, when percussion set lower end surface is pressed in finger On abdomen skin, as the increase that percussion covers lower pressure will lead to skin depressions modification, when this pitting modification of skin terminates When, it will lead to finger pulp skin and give percussion one upward reaction force of set, here it is the active forces and anti-work in physics Use force phenomenon.And as percussion set is to the lasting retraction uplink of housing inner cavity, it is final to realize percussion and complete blood sampling purpose.But this In exist simultaneously another physical phenomenon again, exactly percussion set press to finger pulp skin speed it is faster, will lead to finger pulp skin Pressure it is bigger (this is similarly more greatly with the higher impact force of car speed), result just will appear blood sampling site skin occur it is bright Aobvious lower tenderness, especially certain safe blood-taking needles percussion spring it is really up to the mark or percussion set lower end surface area it is too small when ( The area of percussion set lower end surface is smaller under the premise of pressure is constant, and person's pressure is bigger), the blood sampling finger for being reacted to patient will be felt To more pain, it will appear apparent pitting skin modification and of short duration Continuous Pain phenomenon in finger pulp at this time.Conversely, when blood taking needle When pushing speed is slower, caused lower tenderness will be lighter or even without tenderness because reducing impact force reason in blood sampling by patient.

And the main reason for existing various lower triggering safe hemostixes are without percussion perceptional function is caused, specifically there are two sides Face:

1) because existing safe hemostix is all made of high molecular material (being commonly called as plastics).Because such material is to sound Conduction and resonating effect are very poor, therefore have being commonly called as mute's material.Vibration and sounding when it is to percussion have excellent weakening With the absorbability to sound, covered so being then difficult clearly to be transmitted to outside blood taking needle in the percussion that housing inner cavity occurs, so It is not easy accurately to be perceived by the finger pulp skin of medical staff.

2) because the trigger method of lower triggering safe hemostix causes, it is by medical care people unlike upper triggering safe hemostix The finger pulp of member directly pushes the triggering upper cover of triggering safe hemostix and completes to fire, also unlike side triggering safe hemostix is By the finger pulp of medical staff, directly pushes the triggering key of other triggering safe hemostix and complete to fire.This two kinds of percussion sides Though method is different, the slight vibration of generation can be directly transmitted to cure by trigger cap or triggering key when directly triggering The sensory nerve ending of shield personnel's finger pulp, and the finger of medical staff is enable accurately to directly perceive, rather than lower triggering safety The vibration that the trigger method of hemostix causes is entirely indirect and causes perception difficult.

" lower trigger-type disposable safe hemostix " of two, as main product, its generally existing manufacturing cost is higher Shortcoming, the mainly product are mostly the labor-intensive enterprises with the characteristics of man-made assembly, and laborious time-consuming because assembling, and bright It is aobvious to increase assembling cost.And the basic reason for causing assembling cost to obviously increase still goes out in research and development and design, specifically:

1) only lock and the firing lock of blood taking needle, in design because of excessively complicated and inconvenient assembling again.Lead to assembly program Not only bothersome but also trouble, and most expend the major reason in assembling working hour.Such as " the lower triggering produced of bright U.S. company BD The assembling of " lock unlinks " of formula safe blood-taking needle "；Chinese patent application: 201020120291.5；Chinese patent: CN03221437.5Y；Chinese patent: CN2516098Y；Chinese patent: CN2579344Y；Chinese patent: 2619583Y；China Patent: CN200945164Y；Chinese patent: CN201379576Y.

2) existing lower triggering safe hemostix, most all there is to guarantee percussion set and hemostix housing inner cavity Snug sliding fit prevents without constraint nondirectional axial displacement and lateral displacement shadow of the percussion set with hemostix housing inner cavity The actual functional capability and effect of sound blood sampling, and the product structure design using slideway limiting slot and slideway limit rib being forced.This Although kind structure ensure that the required precision of percussion function, but bring very burden and difficulty to assembling procedure, cause to slide Road limiting slot and slideway limit rib (dovetail and dovetail groove that are equivalent to tradition machinery) can not achieve disposable rapid-aligning, finally As a result it is just reduction of packaging efficiency, increases assembling cost.

3) it is just more prominent to be especially a product, Patent No. CN201210080546.3, the product is opened by percussion set The locking and percussion function for closing to realize blood taking needle needle handle are adopted because the intracavity space of the upper half of hemostix housing is all significantly greater than The intracavity space of the lower half of blood device housing, thus assembling when, exist percussion set first be inserted into housing top when, because percussion set with The gap of hemostix housing inner cavity is excessive, so that percussion set non-control free love is occurred and swings and be displaced, and then causes percussion set cannot Realize that the chute type two for being disposably properly inserted hemostix housing lower half inner cavity in limit rib or limiting stand, gives quick group Dress brings difficulty, and results in dramatically increasing for assembling working hour, and then virtually increase assembling cost, makes total manufacturing cost It is excessively high.

Because of quickling increase for recruitment cost, especially as this labor-intensive enterprises of ending blood taking needle, because being manually assembled Cost it is higher and higher, this to such enterprise participate in world economy competition in terms of bring biggish price disadvantage.

Therefore, structure improvement and optimization are carried out to existing lower trigger-type disposable safe hemostix, it is difficult to reduce assembling It spends, save assembling working hour and improve packaging efficiency, to reduce the manufacturing cost of hemostix, become what hemostix was studied and produced Trend of the times.In addition, in the new lower trigger-type disposable safe hemostix of design, also the design of suitable automatic assembling It is required that taking into account, solid structural basis is laid in advance for the automatic assembling in future.And in the long term, it can not achieve certainly The product of dynamicization assembling is absolutely not have vital, the fierce market competition of basic impotentia participation.

Three, present safe hemostix product, including upper triggering safe hemostix, lower triggering safe hemostix and side Safe hemostix is triggered, in actually blood sampling, mitigation inserting needle that can only be different degrees of bitterly, is but difficult to accomplish really painless adopt Blood.But it realizes the really painless blood sampling of hommization, also needs storming strongholds in defiance of difficulties for numerous research staff in the industry.

Applicant through more than two decades to the study of blood taking needle and constantly research, for the above problem existing for blood taking needle, I successively successfully researches and develops " disposable touchpress safe hemostix causing no pain (patent No.: ZL 2010105745402)；It can be achieved fast Disposable lower triggered safety hemostix (patent No.: ZL 2015100912581) of speed assembling；It can with percussion perceptional function It is blind to hold triggering safe hemostix (ZL 2017203883195), do not changing blood sampling function on the basis of above On the basis of from reducing cost, improve production efficiency, realize that intelligent fit on carries out secondary development, and successfully have developed this hair It is bright；Think that the invention is the primary innovation and breakthrough in blood taking needle field in relation to authority in the industry.

Summary of the invention

In view of the problems of the existing technology, guaranteeing that existing hemostix basic function is constant the present invention provides a kind of In the case of simplify structure, reduce cost, improve production efficiency four cellular types under trigger safe hemostix,

The invention is realized in this way triggering safe hemostix under a kind of four cellular types, comprising:

Housing, the housing have an inner cavity；

The cross sectional shape of percussion set, the percussion set is identical as the inner cavity of housing；The percussion set is plugged in the interior of housing Intracavitary, the inner cavity of percussion set and housing is formed along the vertical direction to be slidably matched；The percussion set has a sliding inner cavity；Percussion Set is made of percussion set upper section and percussion set two parts of lower section, is provided with positioned opposite one on the side wall of percussion set upper section To vertical guide groove, vertical guide groove is connected to the upper end of percussion set, so that percussion set is formed elastic opening nested structure, in vertical guide groove Upper end is equipped with V-type guide port, covers upper end sidewalls in percussion and is externally provided with a pair of of unlock protrusion positioned opposite, unlock protrusion with Vertical guide groove is equipped with needle outlet in 90 ° of angle arrangements, in the bottom of percussion set lower section；

Blood taking needle；The blood taking needle is plugged in percussion set, and blood taking needle includes needle handle and stainless pin, in the outside of needle handle A pair of of guide protrusions block positioned opposite is provided on face, the width of guide protrusions block is less than the width of vertical guide groove；It is stainless The body sections of steel needle even in needle handle, stretch out note from the front end of needle handle, and disposably connects note by the needle portion of stainless pin There is syringe needle guard bar, the lower end of the syringe needle guard bar is equipped with turn-knob handle；

Elastic firing member；The elasticity firing member is arranged in housing, and elastic firing member one end is fixed with housing Connection, the elastic firing member other end are connect with the needle handle of above-mentioned blood taking needle；

It is characterized by:

Above-mentioned housing upper end is cecum, and the lower end of housing is open end, the inner cavity of housing be ellipse inner cavity or by The square cavities that the wide face of a pair of opposing and the leptoprosopy of a pair of opposing enclose；Opposite cloth is provided on sleeve side wall A pair of of the assembly location hole and a pair of of percussion perception solution lockhole set, the assembly location hole and percussion perception solution lockhole it is vertical in Plane where the heart be overlapped with the plane where the long axis of ellipse inner cavity or with it is flat where the leptoprosopy center of square cavities Face is overlapped；Wherein the assembly location hole is close to open end；The vertical height for assembling the opening of location hole is less than percussion perception solution The vertical height of the opening of lockhole；

The top of the percussion set unlock protrusion is equipped with the guiding face for collapsing percussion set upper section inwardly, unlocks under protrusion Surface is equipped with the only locking face being engaged with assembly location hole；The needle outlet two sides of the percussion set lower section are for installing blood taking needle turn-knob The knob handle pilot hole of handle；The height of unlock protrusion is greater than the height of assembly location hole, and the height for unlocking protrusion is less than percussion The height of perception solution lockhole；

In the case where blood taking needle is in cock, the elasticity firing member is compressed, described in positioning energy accumulating state The unlock protrusion of percussion set is located at the assembly positioning hole of housing, and the lower surface for unlocking protrusion is contacted with assembly location hole formation, Form blood taking needle location structure to be fired；Percussion set upper section is in inwardly to collapse shape in covering outside, and percussion set lower section is opened from housing Beginning stretches out；A pair of of guide protrusions block on needle handle is abutted with the V-type guide port of the upper end of two vertical guide grooves of percussion set respectively, And it is remain stationary state, so that blood taking needle is supported on the upper end position of percussion set；

In the case where blood taking needle is in cock, the front end face of syringe needle guard bar and needle handle forms dialysis, and needle portion is exposed； By going upward to percussion perception unlock hole site to cock, the upper two unlocks protrusion of percussion set exists percussion set under external force It is inserted under percussion set upper section elastic reaction in two percussions perception solution lockhole of housing and forms limit, percussion set upper section is vertically led Slot resets；Two guide protrusions blocks on the needle handle are slided in vertical guide groove by V-type guide port；Two guiding on the needle handle are convex It is bittiness to be slidably matched with the vertical guide groove formation of percussion set upper two；Blood taking needle is under the action of elastic firing member to percussion set Open extreme direction is mobile, until the pressure spring of elastic firing member is in free stretched condition, the syringe needle of the blood taking needle stretches out percussion Cover the needle outlet of lower section；

After the completion of blood taking needle percussion under guard mode, the upper two unlocks protrusion of percussion set is located at housing Two percussions perception solution lockhole in and remain stationary state；Two guide protrusions blocks on the needle handle are located at percussion set upper two The lower part of vertical guide groove；The blood taking needle syringe needle under the action of tension spring of elastic firing member is reduced to the needle out of percussion set lower section In hole.

Housing and percussion set upper section use above-mentioned fit structure, and a pair of of solution of setting on percussion set in above-mentioned technical proposal Lock protrusion, in this way, by the extruding that housing inner cavity is raised to two unlocks, percussion set is made to collapse deformation when assembling hemostix, by Blood taking needle is supported on the upper end of percussion set, realizes the support positioning of blood taking needle, is set with timing in percussion, slides into assembly first Positioning hole realizes positioning；Percussion set and blood taking needle, elastic firing member are constrained in housing after positioning；When percussion is taken a blood sample When, percussion set continue uplink, fired in sliding process set upper end leave assembly location hole after collapse, when slide to percussion feel When knowing solution lockhole, the raised uplink of two unlocks for firing set drops into two percussions on outer set and perceives in solution lockholes, and it is complete to fire set Spreading resets, and realizes the unlock of blood taking needle；It is above-mentioned only lock and unlocking manner structure it is simple, while eliminate prevent percussion cover and Other components that blood taking needle, elastic firing member are fallen, blood taking needle engaged therewith can use relatively simple structure, simultaneously Also the assembling of hemostix is facilitated.

The present invention can also adopt the following technical scheme that

Above-mentioned technology is preferred, and the tension and compression cluster spring that the elasticity firing member uses includes two pressure spring sections and one Tension spring section, the tension spring section are located between two pressure spring sections.

Above-mentioned technology is preferred, and the top of the percussion set unlock protrusion is equipped with the guiding for collapsing percussion set upper section inwardly Face is inclined-plane or globoidal structure.

Above-mentioned technology is preferred, and the height of the unlock protrusion is 1-4 times of the height of assembly location hole.

Above-mentioned technology is preferred, and the inner cavity of the housing is that the short-axis direction of ellipse inner cavity is symmetrically arranged with guide groove or side The wide face of shape inner cavity is equipped with the guide groove cooperated with the guide protrusions of blood taking needle.

Above-mentioned technology is preferred, and the guide groove is made of two parallel guiding gussets.

Above-mentioned technology is preferred, and the top of the guiding gusset is equipped with intilted guide protrusions and assembles guide surface.

Above-mentioned technology is preferred, and the guide groove is the groove being arranged on the inner wall of the housing.

Above-mentioned technology is preferred, and elastic firing member is equipped in the housing described in the cecum close to housing and assembles positioning bar； The end of elastic firing member assembly positioning bar is equipped with elastic firing member orientation direction face.

Above-mentioned technology is preferred, and the housing inner cavity cecum lower surface is equipped with elastic firing member connecting column, the elasticity The two sides of firing member connecting column are equipped with hangers, and centre bore is equipped in elastic firing member connecting column, and the centre bore enters Mouth is equipped with tapered guide face；The upper end of the needle handle is equipped with the positioning column cooperated with centre bore.

The present invention has the advantage that and good effect: the present invention is mainly characterized by existing with percussion perception function in reservation It blind can hold triggering safe hemostix (ZL 2017203883195) and all be better than existing market in the comprehensive blood sampling index of items It on the basis of various products, present main product, is all made of 6-8 accessory, as long as 4 accessories of improvement and design Become a best blood taking needle.Blood sampling index comprehensive for the items of the user needle be it is optimal, for manufacturing enterprise because of it It is significant to reduce manufacturing cost, so profit is significant.The best blood taking needle of high-quality low price is finally brought to market and doctors and patients.

Specifically, the invention has the following advantages that

1, the inner cavity of housing has continued and blind can hold triggering safe hemostix with percussion perceptional function in the present invention Structure design, the lateral surface of percussion set upper section is used matches with what housing inner cavity slidably and was circumferentially limited along the vertical direction Shape is closed, in this way, percussion set is directly inserted into housing, without deliberately centering position, is realized in hemostix assembling Quickly assemble, improve packaging efficiency, save built-up time, reduce assembling cost, also because it is simple and safe efficiently thus more It is suitble to blind person to complete assembly working.

2, it is cecum that present invention China and foreign countries, which put on end, and the lower end of housing is open end and the prior art (ZL 2017203883195)) compared to upper cover is eliminated, the die cost of upper cover is reduced using the structure of cecum, while reducing together Assembly process improves assembly efficiency, reduces equipment occupancy.

3, a pair of of assembly location hole positioned opposite is provided on sleeve side wall for assembling factory time limit position, assembly is fixed The design in position hole can also reduce the dosage of material, if relatively small number of for a hemostix saving material utilization amount, still Disposable blood taking device belongs to medical disposable material, needs more than one hundred million every year, and the material from saving from the point of view of quantization angle is relatively significant , therefore a part of considerable production cost can be saved for manufacturing enterprise；The design of assembly location hole can also avoid transporting Or set uplink one is fired under external force when non-blood sampling the phenomenon that the failure of elasticity firing member when touching percussion set lower section When not reaching percussion perception solution lockhole after section distance, restore automatically under the action of elastic firing member to under cock.

4, it is less than the vertical height of the opening of percussion perception solution lockhole using the vertical height of the opening of assembly location hole Structure designed for, assembly positioning states remain that blood taking needle is supported, percussion set upper section there is no complete spreading, when Thus position just carries out complete spreading after sliding into percussion perception solution lockhole, and then realizes that blood taking needle is discharged in elastic firing member Elastic potential energy, and then blood taking needle is driven to realize quick needle insertion movement.

5, the tension and compression cluster spring that the elastic firing member is formed using two pressure spring sections and a tension spring section.It is taking a blood sample Needle is in the pressure spring section compression accumulation of energy at both ends under cock；In the case where blood taking needle is in cock, the pressure spring section at both ends is fast Quick-release puts potential energy, realizes the purpose of quick needle insertion；Tension spring is stretched into a certain distance under effect of inertia after release, it is real in turn Existing tension spring stores part potential energy, after the completion of inserting needle punctures the potential energy effect of tension spring storage again it is lower drive blood taking needle retraction it is certain away from From the syringe needle of guarantee blood taking needle is not exposed after retraction, and the distance that bounces back has relationship according to elastic deformation, the material etc. of spring.

6, it is equipped in the inner cavity of housing and cooperates guide groove with the guide protrusions of blood taking needle, the design of guide groove is using oval There is a phenomenon where balancing points for blood taking needle when further improving assembly precision on the basis of shape structure and avoiding inserting needle, and then reduce Increase feeling of pain due to swing when inserting needle or the withdraw of the needle.

7, the present invention also retains former first percussion perceptional function；Specifically in clinic blood sampling, medical staff passes through Finger, which touches, covers upper a pair of percussion perception Xie Suokongchu outside hemostix, fire perception solution lockhole when being advanced into unlock protrusion When, it can be by the sensory nerve of finger pulp, uplink and moment percussion to unlock protrusion accomplish clearly perceive, really realize With triggering perceptional function.In this way, medical staff to the age of picture, gender, occupation and can be adopted finger pulp skin according to practical blood sampling The concrete conditions such as the thin and thick of skin, the speed selection pressed using different touching or pressed again, pressed and the accurate control for pressing the time System reaches preferable blood sampling effect.

Detailed description of the invention

Fig. 1 is that the embodiment of the present invention implements 1 structural schematic diagram；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the left view of Fig. 1；

Fig. 4 is A-A cross-sectional view in Fig. 3；

Fig. 5 is 1 schematic perspective view of the embodiment of the present invention；

Fig. 6 is 1 stereogram exploded view of the embodiment of the present invention；

It is 1 percussion nested structure schematic diagram in embodiment that Fig. 7, which is with Fig. 8,；

Fig. 9 is 1 blood taking needle structural schematic diagram in the embodiment of the present invention；

Figure 10 is elastic firing member structural schematic diagram；

Figure 11 is that 1 blood taking needle of the embodiment of the present invention waits for cock structural schematic diagram；

Figure 12 is inserting needle blood sampling status architecture schematic diagram after the percussion of 1 blood taking needle of the embodiment of the present invention；

Figure 13 is 1 blood taking needle withdraw of the needle guard mode structural schematic diagram of the embodiment of the present invention；

Figure 14 a is that the embodiment of the present invention implements housing partial cutaway structural schematic diagram in 2；

Figure 14 b is that the embodiment of the present invention implements housing partial cutaway structural schematic diagram in 3；

Figure 15 is that the embodiment of the present invention implements housing bottom view in 4；

Figure 16 is that the embodiment of the present invention implements housing partial cutaway structural schematic diagram in 4；

Figure 17 is that the embodiment of the present invention implements 5 structural schematic diagrams；

Figure 18 is that the embodiment of the present invention implements 6 structural schematic diagrams；

Figure 19 is that the embodiment of the present invention implements 6 stereogram exploded views.

In figure: 10, housing；101, inner cavity；102, location hole is assembled；103, percussion perception solution lockhole；104, guide groove； 105, it is oriented to gusset；1051, guide protrusions assemble guide surface；106, elastic firing member assembles positioning bar；1061, elasticity percussion Component orientation direction face；107, elastic firing member connecting column；1071, hangers；1072, centre bore；1073, tapered guide face； 20, percussion set；201, percussion set upper section；202, percussion set lower section；2021, needle outlet；2022, knob handle pilot hole；203, it erects To guide groove；2031, V-type guide port；204, unlock protrusion；2041, guiding face；2042, stop locking face；30, blood taking needle；301, needle Handle；302, stainless pin；303, guide protrusions block；304, syringe needle guard bar；305, knob handle；306, positioning column；40, elasticity is hit Send out component；401, pressure spring section；402, tension spring section.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.

The present invention be mainly characterized by retain I have percussion perceptional function blind can hold triggering safe hemostix (ZL 2017203883195) on the basis of the comprehensive blood sampling index of items is all better than existing market various products, present master Miscarriage product are all made of 6-8 accessory, as long as 4 accessories of improvement and design become the identical blood sampling of function Needle.Blood sampling index comprehensive for the items of the user needle be it is optimal, manufacturing cost is reduced because it is significant for manufacturing enterprise, Therefore your profit is significant.The best blood taking needle of high-quality low price is finally brought to market and doctors and patients.It can with percussion perceptional function It is blind hold triggering safe hemostix (ZL 2017203883195) disclosure recommendation Granted publication text, herein without It repeats.

Illustrate that particular content of the invention is described in detail below with reference to relevant drawings in order to similar:

Fig. 1 to Figure 10 is please referred to, triggers safe hemostix under four cellular types of one kind, comprising: housing 10, the housing have one A inner cavity 101；

The cross sectional shape of percussion set 20, the percussion set is identical as the inner cavity of housing；The percussion set is plugged in housing Interior intracavitary, the inner cavity of percussion set and housing is formed along the vertical direction to be slidably matched；The percussion set has a sliding inner cavity；It hits Hair net is made of percussion set upper section 201 and percussion set 202 two parts of lower section, is provided on the side wall of percussion set upper section opposite The vertical guide groove 203 of a pair of arrangement, vertical guide groove are connected to the upper end of percussion set, and percussion set is made to form elastic opening nested structure, It is equipped with V-type guide port 2031 in the upper end of vertical guide groove, upper end sidewalls is covered in percussion and is externally provided with a pair of of solution positioned opposite Lock protrusion 204, unlock protrusion are arranged with vertical guide groove in 90 ° of angles, are equipped with needle outlet 2021 in the bottom of percussion set lower section；

Blood taking needle 30；The blood taking needle is plugged in percussion set, and blood taking needle includes needle handle 301 and stainless pin 302, in needle A pair of of guide protrusions block 303 positioned opposite is provided on the lateral surface of handle, the width of guide protrusions block is less than vertical guide groove Width；The body sections of stainless pin even in needle handle, stretch out note from the front end of needle handle by the needle portion of stainless pin, and Disposably connect and be marked with syringe needle guard bar 304, the lower end of the syringe needle guard bar is equipped with turn-knob handle 305；

Elastic firing member 40, elastic firing member use tension and compression cluster spring；The elasticity firing member setting is outside In set, elastic firing member one end is fixedly connected with the spring base of housing top inner wall, the elastic firing member other end with it is above-mentioned Blood taking needle needle handle 301 connect；

Above-mentioned 10 upper end of housing is cecum, and the lower end of housing is open end and the prior art (ZL 2017203883195)) compared to upper cover is eliminated, the die cost of upper cover is reduced using the structure of cecum, while reducing together Assembly process improves assembly efficiency, reduces equipment occupancy；The inner cavity of housing described in the present embodiment is ellipse inner cavity, is adopted It is mainly realized with the purpose of this structure and realizes constraint in circumferencial direction after assembling, reduced the design of limiting component, simplify product Structure, reducing assembly difficulty, improving assembly efficiency is to realize that intelligent assembly lays the foundation.

A pair of of assembly location hole 102 and a pair of of percussion perception solution lockhole 103 positioned opposite are provided on sleeve side wall, Wherein assembly location hole 102 can also reduce the dosage of material for assembling factory time limit position, the design for assembling location hole, if It is relatively small number of that material utilization amount is saved for a hemostix, but disposable blood taking device belongs to medical disposable material, it is annual to need More than one hundred million, the material from saving from the point of view of quantization angle is relatively significant, therefore can be saved for manufacturing enterprise a part of considerable Production cost；The design of assembly location hole can also avoid the elasticity firing member when transporting or touching percussion set lower section from failing The phenomenon that, i.e., it is when reaching percussion perception solution lockhole, in bullet after percussion set uplink a distance under external force when non-blood sampling Property firing member under the action of restore automatically to under cock.

Wherein positioning of the percussion perception solution lockhole 103 for the percussion set of blood taking needle cock, while being also to provide and beating The Free up Memory of the percussion set upper section unlock protrusion of gathering is opened, the unlock protrusion for only firing set reaches percussion perception solution lockhole Blood taking needle can realize that inserting needle acts under the action of elastic firing member when 103 position；In order to guarantee assembly precision and into Needle is smooth, the long axis institute of plane and ellipse inner cavity where the vertical center of the assembly location hole and percussion perception solution lockhole Plane be overlapped；Wherein the assembly location hole is close to open end；The vertical height for assembling the opening of location hole is less than percussion The vertical height of the opening of perception solution lockhole；Percussion perception solution lockhole is less than using the vertical height of the opening of assembly location hole The structure of the vertical height of opening designed for: assembly positioning states remain that blood taking needle is supported, percussion is put on Section just carries out complete spreading after thus position slides into percussion perception solution lockhole without complete spreading, and then realizes blood taking needle Elastic potential energy is discharged in elastic firing member, and then blood taking needle is driven to realize quick needle insertion movement.

The top of the percussion set unlock protrusion 204 is equipped with the guiding face 2041 for collapsing percussion set upper section inwardly, unlock The lower surface of protrusion is equipped with the only locking face 2042 being engaged with assembly location hole；It uses 2021 two sides of needle outlet of the percussion set lower section In the knob handle pilot hole 2022 for installing blood taking needle turn-knob handle；The height of unlock protrusion is greater than the height of assembly location hole, and solves The height of lock protrusion is less than the height of percussion perception solution lockhole；To guarantee only to realize positioning in the position of assembly location hole, no Have the function of percussion, after percussion set is upwarded pressure, assembles the top edge of location hole along the guiding face of unlock protrusion Continue uplink, location hole is assembled during uplink, unlock protrusion is squeezed, so that the upper section of percussion set inwardly collapses, percussion set Continue can uplink until reach percussion perception unlock hole site, percussion set the complete spreading of upper section, for realize inserting needle established base Plinth.

Above-mentioned hemostix can be carried out simultaneously or using automation equipment in actual assembled using manual assembly No matter the open end of the slave housing of elastic firing member is generally first being put by assembly using which kind of assembly method, and and housing The spring base of cecum bottom cooperates, then in successively installation blood taking needle and percussion set, when installing blood taking needle, using hand-held clamping Or mechanical arm Automatic-clamping requires to guarantee that the guide protrusions block on blood taking needle is corresponding with the position of vertical guide groove of percussion set, Blood taking needle is sent into housing by external force, and is connect with elastic firing member, is then packed into percussion set from the open end of housing, Set is fired under external force after percussion set and open end in contact, and percussion is covered into the raised inward-facing gathering of guiding of unlock, until Assembly position of positioning hole is reached, the percussion set unlock protrusion for firing set is engaged with assembly positioning, and guide protrusions are supported fastly at this time In on the V-type guide port of the vertical guide groove upper end of percussion set, assembling process is completed, a set of sterile adopt can be formed after sealed package Blood device.

Figure 11 is please referred to, in the case where blood taking needle is in cock, the elasticity firing member 40 is compressed, in positioning The unlock protrusion 204 of energy accumulating state, the percussion set is located at the assembly positioning hole of housing, unlocks lower surface and the assembly of protrusion Location hole forms contact, forms blood taking needle location structure to be fired；Percussion set upper section is in inwardly to collapse shape in covering outside, percussion set Lower section is stretched out from the open end of housing；The upper end for the two vertical guide grooves that a pair of of guide protrusions block on needle handle is covered with percussion respectively V-type guide port 2031 abuts, and remain stationary state, and blood taking needle 30 is made to be supported on the upper end position of percussion set 20；V-type is led The design for drawing mouth 2031 is eliminated percussion set with housing inner cavity because gap caused by mold reason is bigger than normal, is caused in actual production Percussion, which is covered, occurs different degrees of slight lateral swing in housing inner cavity, is modified by V-type guide port, efficiently solves and adopt The problem of blood needle sideslip or Caton.

Figure 12 is please referred to, in the case where blood taking needle is in cock, syringe needle guard bar 304 and the front end face of needle handle 301 are formed Dialysis, needle portion are exposed；Percussion set solves 103 position of lockhole by going upward to percussion perception to cock under external force, The upper two unlocks protrusion of percussion set is inserted into two percussions perception solution lockhole of housing in the case where percussion covers upper section elastic reaction and is formed The vertical guide groove of limit, percussion set upper section resets；Two guide protrusions blocks 303 on the needle handle 301 are sliding by V-type guide port 2031 To vertical guide groove 203；Two guide protrusions blocks on the needle handle are slidably matched with the vertical guide groove formation of percussion set upper two；It adopts The open extreme direction that blood needle covers under the action of elastic firing member to percussion is mobile, until the pressure spring of elastic firing member is in certainly By stretched condition, the syringe needle of the blood taking needle stretches out the needle outlet 2021 of percussion set lower section.

Figure 13 is please referred to, after the completion of blood taking needle percussion under guard mode, the upper two unlocks protrusion of percussion set 204 are located in two percussions perception solution lockhole 103 of housing and remain stationary state；Two guide protrusions on the needle handle Block is located at the lower part that percussion covers upper two vertical guide groove；The blood taking needle syringe needle under the action of tension spring of elastic firing member contracts To the needle outlet 2021 of percussion set lower section.

The present invention can also adopt the following technical scheme that

Referring to Fig. 10, above-mentioned technology is preferred, the tension and compression cluster spring that the elasticity firing member 40 uses includes two A pressure spring section 401 and a tension spring section 402, the tension spring section are located between two pressure spring sections, and spring-pulling ring number should be less than two Pressure spring circle number summation.It is in the pressure spring section compression accumulation of energy to both ends under cock in blood taking needle when being in, is in blood taking needle Under cock, the pressure spring section quick release potential energy at both ends realizes the purpose of quick needle insertion；It will be drawn under effect of inertia after release Spring stretches a certain distance, realizes that tension spring stores part potential energy in turn, the potential energy that tension spring stores again after the completion of inserting needle punctures is made It is bounced back a certain distance with lower drive blood taking needle, guarantees that the syringe needle of blood taking needle is not exposed after retraction, the distance that bounces back is according to spring Elastic deformation, material etc. have relationship.

Above-mentioned technology is preferred, and the top of the percussion set unlock protrusion is equipped with the guiding for collapsing percussion set upper section inwardly Face 2041 is inclined-plane or globoidal structure, and the purpose of this structure design is reducing friction resistance.

Above-mentioned technology is preferred, and the height of the unlock protrusion is 1-4 times of the height of assembly location hole, avoids the occurrence of card The phenomenon that pausing or positioning failure.

Embodiment 2, please refers to Figure 14 a, and in the present embodiment, the inner cavity of the housing is the short-axis direction pair of ellipse inner cavity Claim to be equipped with guide groove 104, the design of guide groove further increases assembly precision on the basis of using ellipsoidal structure and avoids There is a phenomenon where balancing points for blood taking needle when inserting needle, and then reduce swing when inserting needle or withdraw of the needle due to increases feeling of pain.Remaining knot Structure is same as Example 1.

Above-mentioned technology is preferred, and the guide groove is made of two parallel guiding gussets 105.

Above-mentioned technology is preferred, and the top of the guiding gusset is equipped with intilted guide protrusions and assembles guide surface 1051, play the role of guide protrusions automatic capturing in assembly；Assembly efficiency is improved, while being also conducive to realize intelligence certainly Dynamic assembly.

Embodiment 3, please refers to Figure 14 a, and in the present embodiment, the guide groove 104 is to be arranged on the inner wall of the housing Groove, using groove structure design guarantee guiding under the action of under, may further also reduce the dosage of material.Remaining knot Structure is same as Example 1.

Embodiment 4, please refers to Figure 15 and Figure 16, and in the present embodiment, bullet is equipped in the housing described in the cecum close to housing Property firing member assemble positioning bar 106；The end of elastic firing member assembly positioning bar is equipped with elastic firing member orientation direction Face 1061.The design of elastic firing member assembly positioning bar is conducive to the generation in assembly and inserting needle, the withdraw of the needle of elastic firing member Bending, the elastic potential energy of the elastic firing member of guarantee is in release always along the direction of center line.Remaining structure with implementation Example 2 is identical.

Embodiment 5, please refers to Figure 17, and in the present embodiment, the 10 inner cavity cecum lower surface of housing is equipped with elasticity percussion structure The two sides of part connecting column 107, the elasticity firing member connecting column are equipped with hangers 1071, set in elastic firing member connecting column There is centre bore 1072, the entrance of the centre bore is equipped with tapered guide face 1073；The upper end of the needle handle is equipped with and centre bore The positioning column 306 of cooperation.Structure design positioning column after elastic firing member is compressed is inserted into elastic firing member connection It is equipped in centre bore 1072 in column, the entire length of housing can be shortened in the case where guaranteeing effective inserting needle stroke, reach section The purpose of material saving；Also there is certain guiding role to the inserting needle of blood taking needle and the withdraw of the needle simultaneously, hair when preventing inserting needle and the withdraw of the needle The feeling of pain of raw swing and increase blood sampling.Remaining structure is same as Example 1.

Embodiment 6 please refers to Figure 18 and Figure 19, and 10 upper end of housing in the present embodiment is cecum, and the lower end of housing is Open end, what the inner cavity of housing described in the present embodiment was enclosed by the loose face of a pair of opposing and the leptoprosopy of a pair of opposing Square cavities, the square cavities are rectangle inner cavity.A pair of of assembly positioned opposite is provided on the leptoprosopy side wall of housing Location hole 102 and a pair of of percussion perception solution lockhole 103, percussion set 20, the inner cavity phase of the cross sectional shape and housing of the percussion set Together；The percussion set is plugged in the interior intracavitary of housing, and percussion covers and the inner cavity of housing forms be slidably matched along the vertical direction；It is described Percussion set has a sliding inner cavity；Blood taking needle 30；The blood taking needle is plugged in intracavitary in the sliding of percussion set, elasticity percussion structure Part, elastic firing member one end are fixedly connected with housing, and the needle handle 301 of the elastic firing member other end and above-mentioned blood taking needle connects It connects；Blood taking needle is slided along the slot that is vertically directed of percussion set under the action of elastic firing member in unconfined situation.Its Remaining structure design is same as the previously described embodiments, such as the wide face of square cavities is equipped with and the cooperation of the guide protrusions of blood taking needle Guide groove design, the design of elastic firing member assembly positioning bar 106, the design of elastic firing member connecting column 107, herein not It is repeated.

It is above the preferred embodiment of this lower triggering safe hemostix, but is not used to limit the scope of implementation of the present invention, i.e., The equivalent changes and modifications that all contents according to scope of the present invention patent are done, such as:

1, housing uses oblong housing.

2, identical shape can be used in the lateral surface of housing and the inner cavity surface of housing, for example, above three embodiments describe Shape, different shapes can also be used, for example, the inner cavity surface of housing is using oval face, and the lateral surface of housing is using length Square face etc..

3, housing inner cavity and percussion set upper section lateral surface use identical shape, for example, above three embodiments description Different shapes can also be used in shape, for example, housing inner cavity uses rectangle face, and fires set upper section lateral surface using oval Shape etc..

As long as in short, percussion set can be directly inserted into housing, and firing set and circumferentially being limited by the constraint of housing inner cavity Position circumferentially cannot swing and rotate along percussion set, all belong to the scope of protection of the present invention.

This lower triggering safe hemostix using the above structure, is improved in following several respects:

1, this lower triggering safe hemostix completely eliminates 1 enumerated in background technique " two ") in be previously mentioned only Latch mechanism is excessively complicated and inconvenient assembling phenomenon again, simplifies locking mechanism, not only facilitates assembling, can also be achieved quick group Dress.2) and 3) it also solves the housing size chamber phenomenon being previously mentioned in simultaneously and is not easy to align with limiting slideway and assemble, time-consuming work consuming Deficiency, while also reducing cost.Percussion set lateral surface uses the shape to match with housing inner cavity, keeps percussion set insertion outer After set circumferentially formed limit, especially by housing, percussion set with needle handle it is all synchronous be designed as the shapes such as rectangular, oval To control, percussion covers and set can be used in the axially or transversally swing of needle handle, each component that shape approximation but size reduce step by step Dress mode has easy to operate, it can be achieved that disposable error free assembling, and assembling is quick, hence it is evident that reduces the very big excellent of assembling cost Gesture.When assembling, without with visually it, lower feel percussion set, blood taking needle can be pushed away loaded in housing only according to referring to；Smoothly tie Beam.Through simulation test, not only it is highly suitable for the blind dress of blind person, provides a new market for expanding employment for blind person, more The automatic assembling in future lays solid technical foundation.

2, this lower triggering safe hemostix completely eliminates the deficiency enumerated in background technique " one ".The present invention is passing through Assembly location hole and perception excitation solve lockhole to realize the structure of the only locking bit and unlock that fire set.It is inside by outer casing inner wall A pair of of unlock protrusion is squeezed to realize the gathering of percussion set, and completes only lock function of the percussion set with needle handle.In this way, can be cleverly The volume for saving housing inner cavity reduces the apparent size of housing.In percussion blood collection procedure, when percussion set goes upward to percussion Cover it is upper two unlock protrusion fairly fall in housing percussion perception solution lockhole in when, percussion set spreading reset, not only science The unlock for realizing percussion set and needle handle also achieves intuitive triggering perceptional function.In clinic blood sampling, medical staff passes through Finger, which touches, covers upper a pair of percussion perception Xie Suokongchu outside hemostix, fire perception solution lockhole when being advanced into unlock protrusion When, it can be by the sensory nerve of finger pulp, uplink and moment percussion to unlock protrusion accomplish clearly perceive, really realize Original design intention with triggering perceptional function.In the volume for saving housing inner cavity, the apparent size of housing is reduced, is completed Percussion set only lock with unlock on the basis of, and cleverly realize triggering perceptional function at one stroke four optimum efficiency.Medical care people Member completely can be according to practical blood sampling to concrete conditions such as the age of picture, gender, thin and thicks that is professional and being adopted finger pulp skin, using not The same speed for pressing or pressing and pressing again of touching selects and presses accurately controlling for time, is changed to medical staff by passively taking a blood sample Become actively taking a blood sample and there is important Clinical significance of MG, solid technology base can be laid for the real human nature service of realization Plinth.It is also the maximum original creation place of the present invention.

3, existing upper triggering safe hemostix, other triggering safe hemostix and lower triggering safe hemostix, it is especially main " the disposable lower triggering safe hemostix " of stream, main product are all only to be adopted with a common simple pressure spring come complete independently The overall process of blood percussion, should complete inserting needle function and complete withdraw of the needle function again, to realize that advance and retreat needle function will pressure spring hardness Tension spring function is imparted, and the course of work of pressure spring is caused to be first to postpone drawing, and the process drawn is exactly down speeding procedure, because will be extensive The pressure spring in drift is forced to elongate the inserting needle stroke of 3-4mm again to reach inserting needle purpose again, the power born out than The big several times of tension spring.The result is that significantly reducing inserting needle speed, the generation of inserting needle pain is resulted in.And the present invention is to eliminate simple pressure Spring leads to inserting needle pain when blood sampling because inserting needle speed is inadequate, and spy designs on the basis of common stainless steel pressure spring and adds around one The tension spring of the close system of segment becomes combined type percussion spring.Through actual tests, combined type percussion spring is not reducing inserting needle Under the premise of elastic force, the inserting needle speed and percussion force of blood taking needle are also significantly improved, and is made most of by blood sampling patient, realization The painless blood sampling of real hommization is the breakthrough and leap of matter.

In summary the present invention be mainly characterized by retain I have percussion perceptional function blind can hold triggering peace Whole blood sampling device (ZL 2017203883195) on the basis of the comprehensive blood sampling index of items is all better than existing market various products, Present main product is all made of 6-8 accessory, as long as to become a structure simple for 4 accessories of improvement and design, at This cheap blood taking needle.Blood sampling index comprehensive for the items of the user needle be it is optimal, for manufacturing enterprise because it is significant Manufacturing cost is reduced, so profit is significant.The best blood taking needle of high-quality low price is finally brought to market and doctors and patients.

Claims

1. triggering safe hemostix under a kind of four cellular types, comprising:

Housing, the housing have an inner cavity；

The cross sectional shape of percussion set, the percussion set is identical as the inner cavity of housing；The percussion set is plugged in the interior intracavitary of housing, The inner cavity of percussion set and housing is formed along the vertical direction to be slidably matched；The percussion set has a sliding inner cavity；Percussion set by Two parts of percussion set upper section and percussion set lower section are constituted, and it is perpendicular to be provided with a pair positioned opposite on the side wall of percussion set upper section To guide groove, vertical guide groove is connected to the upper end of percussion set, so that percussion set is formed elastic opening nested structure, in the upper end of vertical guide groove Portion is equipped with V-type guide port, covers above end sidewalls in percussion and is externally provided with a pair of unlock protrusion positioned opposite, unlock is raised and vertical Guide groove is equipped with needle outlet in 90 ° of angle arrangements, in the bottom of percussion set lower section；

Blood taking needle；The blood taking needle is plugged in percussion set, and blood taking needle includes needle handle and stainless pin, on the lateral surface of needle handle It is provided with a pair of of guide protrusions block positioned opposite, the width of guide protrusions block is less than the width of vertical guide groove；Stainless pin Body sections even note in needle handle, stretch out from the front end of needle handle, and disposably connects and be marked with needle by the needle portion of stainless pin The lower end of head protection bar, the syringe needle guard bar is equipped with turn-knob handle；

Elastic firing member；The elasticity firing member is arranged in housing, and elastic firing member one end is fixedly connected with housing, The elastic firing member other end is connect with the needle handle of above-mentioned blood taking needle；

It is characterized by:

Above-mentioned housing upper end is cecum, and the lower end of housing is open end, and the inner cavity of housing is for ellipse inner cavity or by a pair The square cavities that the leptoprosopy in the wide face and a pair of opposing that are oppositely arranged encloses；It is provided on sleeve side wall positioned opposite A pair of assembly location hole and a pair of of percussion perception solution lockhole, the vertical center institute of the assembly location hole and percussion perception solution lockhole Plane be overlapped with the plane where the long axis of ellipse inner cavity or with the plane weight where the leptoprosopy center of square cavities It closes；Wherein the assembly location hole is close to open end；The vertical height for assembling the opening of location hole is less than percussion perception solution lockhole Opening vertical height；

The top of the percussion set unlock protrusion is equipped with the guiding face for collapsing percussion set upper section inwardly, unlocks the lower surface of protrusion Equipped with the only locking face being engaged with assembly location hole；The needle outlet two sides of the percussion set lower section are for installing blood taking needle turn-knob handle Knob handle pilot hole；The height that the height of unlock protrusion is greater than the height of assembly location hole, and unlocks protrusion is less than percussion perception Solve the height of lockhole；

In the case where blood taking needle is in cock, the elasticity firing member is compressed, in positioning energy accumulating state, the percussion The unlock protrusion of set is located at the assembly positioning hole of housing, and the lower surface for unlocking protrusion is contacted with assembly location hole formation, is formed Blood taking needle location structure to be fired；Percussion set upper section is in inwardly to collapse shape in covering outside, percussion set open end of the lower section from housing It stretches out；A pair of of guide protrusions block on needle handle is abutted with the V-type guide port of the upper end of two vertical guide grooves of percussion set respectively, and is protected Stationary state is held, blood taking needle is made to be supported on the upper end position of percussion set；

In the case where blood taking needle is in cock, the front end face of syringe needle guard bar and needle handle forms dialysis, and needle portion is exposed；Outside By going upward to percussion perception unlock hole site to cock, the upper two unlocks protrusion of percussion set is firing the lower percussion set of power effect It covers and forms limit in the two percussions perception solution lockhole for be inserted under upper section elastic reaction housing, the vertical guide groove of percussion set upper section is multiple Position；Two guide protrusions blocks on the needle handle are slided in vertical guide groove by V-type guide port；Two guide protrusions blocks on the needle handle It is slidably matched with the vertical guide groove formation of percussion set upper two；Blood taking needle is under the action of elastic firing member to the opening of percussion set Extreme direction is mobile, until the pressure spring of elastic firing member is in free stretched condition, the syringe needle of the blood taking needle stretches out under percussion set The needle outlet of section；

After the completion of blood taking needle percussion under guard mode, the upper two unlocks protrusion of percussion set is located at the two of housing In a percussion perception solution lockhole and it remain stationary state；It is vertical that two guide protrusions blocks on the needle handle are located at percussion set upper two The lower part of guide groove；The blood taking needle syringe needle under the action of tension spring of elastic firing member is reduced to the needle outlet of percussion set lower section It is interior.

2. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: the elasticity firing member is adopted Tension and compression cluster spring, including two pressure spring sections and a tension spring section, the tension spring section are located between two pressure spring sections.

3. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: the percussion set unlock protrusion Top be equipped with and make percussion set upper section the guiding face inclined-plane or globoidal structure that inwardly collapse.

4. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: the height of the unlock protrusion It is 1-4 times of the height of assembly location hole.

5. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: the inner cavity of the housing is ellipse The short-axis direction of round inner cavity is symmetrically arranged with guide groove or the wide face of square cavities is equipped with and the cooperation of the guide protrusions of blood taking needle Guide groove.

6. triggering safe hemostix under four cellular type according to claim 5, it is characterised in that: the guide groove is flat by two Capable guiding gusset is constituted.

7. triggering safe hemostix under four cellular type according to claim 6, it is characterised in that: the top of the guiding gusset Guide surface is assembled equipped with intilted guide protrusions.

8. triggering safe hemostix under four cellular type according to claim 5, it is characterised in that: the guide groove is that setting exists Groove on the inner wall of the housing.

9. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: in the cecum institute close to housing It states and is equipped with elastic firing member assembly positioning bar in housing；The end of elastic firing member assembly positioning bar is equipped with elasticity percussion structure Part orientation direction face.

10. triggering safe hemostix under four cellular type according to claim 1, it is characterised in that: housing inner cavity cecum Lower surface is equipped with elastic firing member connecting column, and the two sides of the elasticity firing member connecting column are equipped with hangers, fire in elasticity Centre bore is equipped in component connecting column, the entrance of the centre bore is equipped with tapered guide face；The upper end of the needle handle be equipped with The positioning column of centre bore cooperation.