CN201939347U - Disposable touchpress safe hemostix causing no pain - Google Patents
Disposable touchpress safe hemostix causing no pain Download PDFInfo
- Publication number
- CN201939347U CN201939347U CN2010206433456U CN201020643345U CN201939347U CN 201939347 U CN201939347 U CN 201939347U CN 2010206433456 U CN2010206433456 U CN 2010206433456U CN 201020643345 U CN201020643345 U CN 201020643345U CN 201939347 U CN201939347 U CN 201939347U
- Authority
- CN
- China
- Prior art keywords
- spring
- needle
- cover
- overcoat
- blood taking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a disposable touchpress safe hemostix causing no pain, which comprises an outer casing, a mobile inner casing cased inside the outer casing, a blood collection needle, a spring and an immobile top cover. The blood collection needle consists of a stainless steel needle and a wing-type needle handle. The mobile inner casing, the blood collection needle and the spring are installed inside the outer casing. The mobile inner casing has an expansion-sleeve structure. The needle insertion can be carried out by switching on-off the V-shape opening at the upper part of the mobile inner casing. Compared with the existing hemostix, the hemostix provided in the utility model can be prevented from axially rotating and shaking when being inserted. The blood collection needle can be inserted steadily, and can greatly relieve the pain of the patients. Additionally, the hemostix provided in the utility model has a simple structure, and is easy to produce and assemble. The spring is a stretching-compression combination spring consisting of a compression spring and a stretching spring. The blood collection needle can be inserted and withdrawn quickly by the driving of the spring, and the pain of patients can be eliminated in blood collection.
Description
Technical field
This utility model belongs to medical trace blood technique with the apparatus field, more particularly, relates to the painless hemostix of a kind of disposable press-type safety.
Background technology
Disposable blood taking device is a kind of medical device commonly used, is to utilize blood taking needle puncture patient's finger or ear to take a blood sample.At present, instrument for blood collection on the market all can bring pain to patient in use, this pain be because instrument for blood collection in use, the inserting needle speed of blood taking needle or go out that needle speed causes excessively slowly.The pain god who is significantly less than human body when inserting needle speed is during with cerebripetal transmission speed, and the human body peripheral nerve can be finished once the overall process to the primary event arc of brain conduction smoothly, thereby makes human body produce pain; When withdraw of the needle speed is crossed when slow, because of being easy to produce small relative motion (especially being afraid of the women or the child of pain) between blood taking needle and patient's finger or the ear, vertical pulling of syringe needle right and wrong in human body or swing must increase the weight of the stimulation to the human body peripheral nerve, thereby produce pain.The two fast one slow rules of following when above-mentioned principle and intramuscular injection (inserting needle and to go out needle speed fast, it is slow to push away medicine) are same reasons.
The patent No. a kind of blood taking needle that has been 200920096338.6 patent disclosure, the inclined-plane that puts in this hemostix utilization activity cooperates with the wedge shape of blood taking needle projection, relying on blood taking needle to rotate along the inclined-plane releases energy spring and inserting needle, because of spring and blood taking needle are to fixedly connected, this will make blood taking needle when inserting needle, and stainless pin has shake or rotation in various degree, like this, when the rustless steel syringe needle with three inclined-planes enters human body skin, will certainly bring in various degree pain to patient.
The disposable blood taking device that existing each factory on the market produces all is with the power source of compression spring as the inserting needle and the withdraw of the needle, and the overwhelming majority adopts a compression spring to realize two actions of the hemostix inserting needle and the withdraw of the needle.Its operation principle is: the compression spring that is in compressive state promotes the blood taking needle inserting needle by the abrupt release energy, when the compression spring is upspring and is entered free state, the compression spring has been finished a working procedure, and be through with it as the work mission of compression spring and output kinetic energy no longer, can still have needling length about 4mm can finish the overall process of the inserting needle and the withdraw of the needle at this moment, at this moment, need utilize blood taking needle (by stainless pin, parts such as needle handle are formed) on the inertia kinetic energy that had drive and will be in compression spring under the free state and elongate length about 4mm to finish the inserting needle action, after inserting needle is finished, inertia kinetic energy on the blood taking needle is zero, the compression spring that is elongated can drive connection blood taking needle retraction thereon, finishes withdraw of the needle action with this.The above-mentioned spring that will compress uses as extension spring, need consume the very big kinetic energy of blood taking needle in the inserting needle process during stretching, therefore, will inevitably cause the inserting needle speed of blood taking needle slow, thereby make patient produce pain.
Summary of the invention
This utility model provides a kind of simple in structure for solving the technical problem that exists in the known technology, can eliminate the pain of bringing to patient behind inserting needle, the withdraw of the needle and the pin, and can obtain the painless hemostix of disposable press-type safety of enough blood sampling volumes.
The technical scheme that this utility model is taked for the technical problem that exists in the solution known technology is: the painless hemostix of a kind of disposable press-type safety, comprise overcoat, be sleeved on the movable interior cover of overcoat inside, blood taking needle, spring and fixed cover, described blood taking needle is made up of stainless pin and aerofoil profile needle handle, it is characterized in that: the inwall of described overcoat is the poroid structure of stairstepping, and the Circularhole diameter of described overcoat lower inside is less than the Circularhole diameter of overcoat inside upper part, the inwall of overcoat is provided with two symmetrical slide grooves, and the bottom end opening inboard of overcoat is provided with defining flange; Cover is the hollow shape pipe box in the described activity, the bottom of cover is to be provided with at the bottom of the cover of eyelet in movable, the upper, open end of cover is arranged with v-shaped openings in movable, the bottom cylindrical of cover is provided with symmetrical axial ribs shape projection and symmetrical radial rib shape projection in movable, be provided with open slot between described v-shaped openings and the axial ribs shape projection, the top cylindrical of cover is provided with the projection band in the described activity, and the axial ribs shape projection of cover by its underpart and slide groove fitted shaft are in being movably arranged on overcoat in the described activity; Described blood taking needle is arranged on overcoat inside, and is positioned at the top of movable cover, and the stainless pin of blood taking needle is connected with the aerofoil profile needle handle, and the aerofoil profile needle handle comprises columniform handle body, is arranged with the aerofoil profile projection on the handle body, and the upper end of handle body is the spring connecting portion; Described spring is connected and composed by the compression spring and the extension spring of coaxial line, and an end of spring is connected with the spring connecting portion of blood taking needle needle handle, and the other end of spring is connected and fixed loam cake; Fixed cover is installed in outer set upper side.
This utility model can also adopt following technical scheme:
The spring filament diameter of described extension spring and compression spring is 0.3-0.6mm, and the described extension spring of stating is 0.6:1-1.2:1 with the number of turns ratio that compresses spring.
The spring connecting portion of the needle handle of described blood taking needle is the circular cylinder that has agnail.
The top of described fixed cover is the plane, and the below of fixed cover is provided with spring mounting groove and fixing lug boss, and the upper end open inboard of described overcoat is provided with the top cover draw-in groove, and fixed cover is installed on the coat by fixing lug boss and top cover draw-in groove.
Described spring comprises compression spring and the extension spring that forms with a steel wire coiling, and the compression spring is connected with the spring connecting portion of the needle handle of described blood taking needle, and extension spring is connected with fixed cover.
The stainless pin of described blood taking needle is provided with plastics and carefully overlaps, and the thin cover of described plastics is flat-shaped body.
The upper end of described axial ribs shape projection is concordant with the upper surface of radial rib shape projection, and the top of radial rib shape projection is provided with open seam.
Needle point one side of described aerofoil profile projection is V font inclined-plane.
Advantage and the good effect that the utlity model has are:
1. adopt " expansion sleeve type " movable interior cover to be connected with blood taking needle, axial rotation and shake when having avoided the blood taking needle inserting needle, make that the blood taking needle inserting needle is steady, can reduce the pain that blood taking needle brings to patient greatly, in addition, this novel described hemostix is simple in structure, and processing and manufacturing and assembling are easily.
2. selected spring is a drawing and pressing type mixing spring in this novel hemostix, and described mixing spring comprises extension spring and compression spring, and extension spring is connected by the end with the compression spring.This is novel to be organically integrated extension spring and compression spring, and when spring by compression the time, the compression spring works; When spring was stretched, extension spring worked.Compare existing hemostix, have following advantage:
In hemostix inserting needle process, after compression spring in the hemostix promotes blood taking needle high speed inserting needle and returns to free state, blood taking needle in the hemostix starts drag extension spring because of inertia kinetic energy, compare existing blood taking needle pulling compression spring, significantly reduced the kinetic energy loss (, can reduce the kinetic energy loss more than 50%) in the blood taking needle inserting needle process, like this in conjunction with actual measurement, the kinetic energy of saving can have been eliminated the pain of inserting needle with improving on the inserting needle speed and strength of blood taking needle.In addition, extension spring drives the speed of the blood taking needle withdraw of the needle, can satisfy the speed that the blood taking needle withdraw of the needle does not cause pain fully.Drawing and pressing type mixing spring performs to the effect of two kinds of springs ultimate attainment, makes the hemostix inserting needle and the withdraw of the needle can not bring pain to patient.
Description of drawings
For this utility model embodiment or technical scheme of the prior art clearly are described, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below tightly is embodiment more of the present utility model, for this area or those of ordinary skill, under the situation of not paying creative prerequisite, can also obtain other accompanying drawings according to this accompanying drawing.
Fig. 1 is this structural representation;
Fig. 2 is the structural representation of overcoat in this utility model;
Fig. 3 is the structural representation of movable interior cover in this utility model;
Fig. 4 is the structural representation of blood taking needle in this utility model;
Fig. 5 is the structural representation of disclosed spring among this utility model embodiment one;
Fig. 6 is the structural representation of disclosed spring among this utility model embodiment two;
Fig. 7 is the structural representation of disclosed spring among this utility model embodiment three;
Fig. 8 is the structural representation of fixed cover in this utility model.
Among the figure: 1, overcoat; 1-1, defining flange; 1-2, slide groove; 1-3, top cover draw-in groove; 1-4, circular arc step; 2, movable interior cover; 2-1, axial ribs shape projection; 2-2, radial rib shape projection; 2-3, v-shaped openings; 2-4, open slot; 2-5, open seam; 2-6, projection band; 3, blood taking needle; 3-1, stainless pin; 3-2, aerofoil profile needle handle; 3-2-1, handle body; 3-2-2, aerofoil profile projection; 3-2-3, spring connecting portion; 4, spring; 4-1, compression spring; 4-2, extension spring; 5, fixed cover; 5-1, fixing lug boss; 5-2, spring mounting groove.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Embodiment one
See also Fig. 1, the painless hemostix of a kind of disposable press-type safety.This hemostix is made up of overcoat 1, movable interior cover 2, blood taking needle 3, spring 4 and fixed cover 5 five parts.
As shown in Figure 2, described overcoat 1 is the thin-walled hollow pipe box of an injection mo(u)lding, overcoat 1 inwall is the poroid structure of stairstepping, and the Circularhole diameter of overcoat 1 lower inside forms thin circular arc step 1-4 less than the Circularhole diameter of overcoat inside upper part with this on outer casing inner wall.The inwall of overcoat 1 is provided with two symmetrical slide groove 1-2.The bottom end opening inboard of overcoat 1 is provided with defining flange 1-1, and the upper end open inboard of overcoat 1 is provided with top cover draw-in groove 1-3.The lower end of described slide groove 1-2 connects the lower surface of overcoat 1, is installed in overcoat 1 inside movable cover 2 and blood taking needle 3 all along slide groove 1-2 axially-movable.
As shown in Figure 3, cover 2 is thin-walled hollow sleeve pipes of injection mo(u)lding in movable, the lower end of cover 2 is provided with at the bottom of the less cover of thickness in movable, the cover end is provided with can be for the eyelet of syringe needle and needle guard discrepancy, the upper, open end symmetry of cover 2 offers two v-shaped openings 2-3 in movable, the bottom outer circumference surface of cover 2 is provided with symmetrical axial ribs shape projection 2-1 and symmetrical radial rib shape projection 2-2 in movable, and the upper end of axial ribs shape projection 2-1 is concordant with the upper surface of radial rib shape projection 2-2.Above-mentioned axial ribs shape projection 2-1 cooperates installation with slide groove 1-2 on overcoat 1 inwall, thereby cover 21 axial rotation when sliding in overcoat in the restraint, radial rib shape projection 2-2 cooperates with the positive stop lug boss 1-1 of overcoat 1 bottom, with cover 2 extension elongations from overcoat 1 lower ending opening in the restraint.Be provided with open slot 2-4 between axial ribs shape projection 2-1 and the described v-shaped openings 2-3, the width of slide groove 1-2 on the width of open slot 2-4 and overcoat 1 inwall is identical, the top of radial rib shape projection 2-2 is provided with open seam 2-5, open seam 2-5 helps the v-shaped openings 2-3 folding of movable interior cover 2 upper ends, and the top cylindrical of movable interior cover 2 is provided with protruding band 2-6.Cover 2 is sleeved on overcoat 1 inside in movable, movable in cover 2 be positioned at the path hole of overcoat 1 bottom, movable in cover 2 pushed by the projection band 2-6 of its upper end and the inwall of overcoat 1, and make the v-shaped openings 2-3 lower end closure on its top.
As shown in Figure 4, described blood taking needle 3 is the cast molectron, and blood taking needle 3 is made of stainless pin 3-1 and aerofoil profile needle handle 3-2.Aerofoil profile needle handle 3-2 is injection mo(u)lding, aerofoil profile needle handle 3-2 comprises columniform handle body 3-2-1, be arranged with aerofoil profile projection 3-2-2 on the handle body 3-2-1, needle point one side of aerofoil profile projection 3-2-2 is V font inclined-plane (also can be arc surface), aerofoil profile projection 3-2-2 and overcoat 1 interior slide groove 1-2 cooperates installation, can limit the axial rotation of blood taking needle 3 when overcoat 1 internal motion, the V font inclined-plane at aerofoil profile projection 3-2-2 tip cooperates with the v-shaped openings 2-3 of movable interior cover 2, can limit blood taking needle 3 moving axially in overcoat 1 inside.The upper end of handle body 3-2-1 is spring connecting portion 3-2-3, and spring connecting portion 3-2-3 is the circular cylinder that has agnail.Above-mentioned stainless pin 3-1 top-pour is moulded plastics that are shaped as flat-shaped body and is carefully overlapped (not expressing among the figure), and the thin cover of plastics can prevent that blood taking needle from polluting.
As shown in Figure 5, described spring 4 is drawing and pressing type mixing spring, and drawing and pressing type mixing spring is formed by compression spring 4-1 and extension spring 4-2 organic assembling, compresses spring 4-1 and extension spring 4-2 coaxial line, and is connected by the end.In the present embodiment, mix spring and be made up of one section compression spring 4-1 and one section extension spring 4-2, compression spring 4-1 and extension spring 4-2 select the stainless steel spring silk in same silk footpath for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Technical parameter and installation requirement that this drawing and pressing type mixes spring are:
1. spring is in when assembling, must accomplish the two ends of mixing spring fixingly simultaneously, like this, can guarantee that blood taking needle ejects inserting needle at a high speed, also can guarantee the blood taking needle withdraw of the needle that bounces back at a high speed.
2. according to the structure of different hemostixes and the syringe needle diameter of blood taking needle, select the different spring filament diameters and the coiling number of turns for use.Described spring filament diameter is selected in the scope internal reference of 0.3-0.6mm, if the spring filament diameter less than 0.3mm, the phenomenon that elastic force is not enough or pulling force is not enough can appear in spring, thereby reduces the inserting needle or the withdraw of the needle speed of blood taking needle, makes patient produce pain; If the spring filament diameter is greater than 0.6mm, the elastic force of spring is excessive, and the syringe needle of blood taking needle can stop the long time in tissue, and the syringe needle of blood taking needle can swing, and can cause heavier pain reaction, has also increased unnecessary material and cost simultaneously.
3. generally speaking, extension spring gets final product for 1:1 with the number of turns ratio of compression spring, can select in proportion 0.6:1-1.2:1 internal reference as required, but should grasp following rule, generally speaking, the number of turns of extension spring coiling is very few, the kinetic energy consumption in the time of can increasing blood taking needle pulling extension spring, thereby reduce the inserting needle speed of blood taking needle, make patient produce pain; The number of turns of extension spring steel coiling is too much, the inserting needle speed of the blood taking needle that not only can slow down, but also can increase the total length that mixes spring, and make the total length of hemostix increase, increased unnecessary production cost.
4. the mixing spring that this utility model adopted, blood taking needle is that the pulling extension spring carries out inserting needle, compare existing blood taking needle pulling compression spring inserting needle, inertia kinetic energy loss in the time of can significantly reducing the blood taking needle inserting needle, here, must design extension spring by above-mentioned parameter, compare the compression spring and reduce 50%-70% to guarantee the loss of described inserting needle inertia kinetic energy.When the inertia kinetic energy loss reduces less than 50% the time, can reduce inserting needle speed; When the inertia kinetic energy loss reduces greater than 70 the time, can reduce the withdraw of the needle speed of blood taking needle, the two all can bring pain to patient.
5. this drawing and pressing type mixes the stainless steel spring silk that spring can be selected same silk footpath for use, forms according to designing requirement continuous coiling on torsion machine.In addition, also can adopt different silks footpath segmentation coiling extension springs and compression springs, will make extension spring and compression spring afterwards and utilize connector (this connector can be two sections plastic fastenings that have draw-in groove, represents among the figure) linking into an integrated entity gets final product.
The drawing and pressing type mixing spring that this utility model adopted has essential distinction with the cylindrical compression spring of indivedual segmentation coilings that exist on the market.The cylindrical compression spring of segmentation coiling on the market, be because of designing or structural special requirement, promptly guaranteeing that the compression spring has under the certain-length prerequisite, spring also will have the elastic force of requirement, if will compress the form that the total length of spring all turns to the compression spring, will inevitably diminish because of the long elastic force that makes of the length of spring.For addressing the above problem, have to spring segmentation coiling will should be compressed, at first, elastic force requirement according to this compression spring, calculate the silk footpath of this compression spring, the coiling number of turns, drift, active length, parameters such as spring wire ring height, and carry out coiling according to the manufacturing process of routine compression spring, at last supply the not enough difference of spring length by gapless close winding method again, this winding method can guarantee the length requirement of this compression spring, can guarantee the elastic force requirement of this compression spring again, and close winding spring section wherein only plays the effect that replenishes spring length, on the performance of spring, its essence still is a kind of compression spring.
And this drawing and pressing type mixes spring and above-mentioned special lengthening cylindrical compression spring has essential distinction, drawing and pressing type mixing spring, not only to calculate the elastic force requirement of compression spring in design, also to calculate and the best pulling force that compresses the extension spring that spring is connected, guarantee in the blood taking needle withdraw of the needle not under bitterly the prerequisite with this, save compression spring kinetic energy loss to greatest extent, improve the inserting needle speed of blood taking needle, can not bring pain when guaranteeing the blood taking needle inserting needle to patient.
It is cylindricality spring or volute spring that this drawing and pressing type mixes the optimal manufacturing shape of spring, and this also is best suited for the disposable safe hemostix, has to make simply, easy for installation, the low and practical advantage of processing cost.
As shown in Figure 8, described fixed cover 5 adopts injection moulding to finish, and the top of fixed cover 5 is the plane, and the below of fixed cover 5 is provided with spring mounting groove 5-2 and fixing lug boss 5-1, and fixed cover 5 is installed on the overcoat 1 by fixing lug boss 5-1 and top cover draw-in groove 1-3.
Embodiment two
Hemostix is made up of overcoat 1, movable interior cover 2, blood taking needle 3, spring 4 and fixed cover 5 five parts, and wherein the structure of overcoat 1, movable interior cover 2, blood taking needle 3 and fixed cover 5 is all identical with enforcement one described structure.
As shown in Figure 6, in the present embodiment, described spring 4 is drawing and pressing type mixing spring, and drawing and pressing type mixing spring is formed by compression spring 4-1 and extension spring 4-2 organic assembling, compresses spring 4-1 and extension spring 4-2 coaxial line, and is connected by the end.Mixing spring is made up of two sections compression spring 4-1 and one section extension spring 4-2, two sections compression spring 4-1 lay respectively at the both sides of extension spring 4-2, two sections compression spring 4-1 and one section extension spring 4-2 select same silk stainless steel spring silk directly for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Embodiment three
Hemostix is made up of overcoat 1, movable interior cover 2, blood taking needle 3, spring 4 and fixed cover 5 five parts, and wherein the structure of overcoat 1, movable interior cover 2, blood taking needle 3 and fixed cover 5 is all identical with enforcement one described structure.
As shown in Figure 7, in the present embodiment, described spring 4 is drawing and pressing type mixing spring, and drawing and pressing type mixing spring is formed by compression spring 4-1 and extension spring 4-2 organic assembling, compresses spring 4-1 and extension spring 4-2 coaxial line, and is connected by the end.Mixing spring is made up of one section compression spring 4-1 and two sections extension spring 4-2, two sections extension spring 4-2 lay respectively at the both sides of compression spring 4-1, one section compression spring 4-1 and two sections extension spring 4-2 select same silk stainless steel spring silk directly for use, and coiling forms drawing and pressing type mixing spring continuously on torsion machine.
Assembling of this hemostix and use:
End plug-in mounting with spring 4 enters in the spring mounting groove 5-2 of fixed cover 5 earlier, and the other end with spring 4 is sleeved on the spring connecting portion 3-2-3 of blood taking needle 3 again, and fixes with the agnail on the spring connecting portion 3-2-3.The axial ribs shape projection 2-1 of cover 2 lower ends in movable and the slide groove 1-2 of overcoat 1 inside are aligned, the upper end cover of cover 2 in movable from overcoat 1 fed in the overcoat 1, the radial rib shape projection 2-2 of cover 2 lower ends contacts with the defining flange 1-1 of overcoat 1 bottom in movable, at this moment, cover 2 integral body all are positioned at the path circular hole of overcoat 2 inside in movable, because of the projection band 2-6 that overlaps 2 upper ends in movable is pushed by overcoat path hole, and make the v-shaped openings 2-3 lower end of movable interior cover 2 upper ends be in closure state.Be connected by spring 4 between blood taking needle 3 and the fixed cover 5, the symmetrical airfoil projection 3-2-2 of the aerofoil profile needle handle 3-2 of blood taking needle 3 and the slide groove 1-2 of overcoat 1 inside are aligned, blood taking needle 3 and the fixed cover 5 assemblies upper end cover from overcoat 1 is fed in the overcoat 1, fixed cover 5 cooperates with the top cover draw-in groove 1-3 of overcoat 1 upper end by the fixing lug boss 5-1 on it, fixed cover 5 is fixed on the upper end of overcoat 1, at this moment, the V font inclined-plane at the aerofoil profile projection 3-2-2 tip on the blood taking needle 3 cooperates with the v-shaped openings 2-3 of movable interior cover 2, closed v-shaped openings 2-3 restriction blood taking needle 3 is along the axial downward movement of overcoat 1, make between blood taking needle 3 and the fixed cover 5 compression spring 4-1 compressive deformation and stored energy, this energy can be converted into the kinetic energy of the blood taking needle inserting needle of hemostix.
The using method of hemostix:
With the painless hemostix taking-up of disposable safe of sterilization, one of user holds the overcoat 1 of hemostix, the another hands is pulled out needle guard after needle guard is done 90 ° of-180 ° of rotations, with the sterile blood sampling site of hemostix perpendicular alignmnet, the end face of movable interior cover 2 extensions of hemostix is placed on the skin that needs blood sampling site stably, user firmly presses down the overcoat 1 or the fixed cover 5 of hemostix gently, move on the cover 2 in movable in the hemostix and further compress spring 4, afterwards, the projection band 2-6 of cover 2 upper ends enters in the hole, big footpath of overcoat 1 inside in movable, under the V font ramp effect at spring 4 extruding and blood taking needle 3 aerofoil profile projection 3-2-2 tips, thoroughly open rapidly the lower end of the v-shaped openings 2-3 of cover 2 upper ends in movable, compressed compression spring 4-1 between blood taking needle 3 and fixed roof 5 releases energy, promote the open slot 2-4 downward high speed inserting needle of blood taking needle 3 along the v-shaped openings 2-3 lower end of movable interior cover 2, meanwhile, aerofoil profile projection 3-2-2 on the blood taking needle 3 moves in the slide groove 1-2 of overcoat 1 always, play the effect of guiding and restriction blood taking needle 3 axial rotation with this, after compression spring 4-1 is discharged into free state, blood taking needle 3 is when continuing the high speed inserting needle, spur the length that the extension spring 4-2 that is connected with compression spring 4-1 arrives needs by inertia kinetic energy, penetrate into the prescribed depth of blood sampling site as stainless pin 3-1 after, kinetic energy on the blood taking needle 3 is zero, at this moment, extension spring 4-2 can be exceedingly fast retracts blood taking needle 3 and finishes quick withdraw of the needle action, like this, finally finish the once overall process of blood sampling, at this moment, user only needs to enter the work of squeezing blood and collection blood immediately and just can finish whole blood sampling work after the unified placement of exhausted hemostix.
Claims (8)
1. painless hemostix of disposable press-type safety, comprise overcoat, be sleeved on cover, blood taking needle, spring and fixed cover in overcoat inside movable, described blood taking needle is made up of stainless pin and aerofoil profile needle handle, it is characterized in that: the inwall of described overcoat is the poroid structure of stairstepping, and the Circularhole diameter of described overcoat lower inside is less than the Circularhole diameter of overcoat inside upper part, the inwall of overcoat is provided with two symmetrical slide grooves, and the bottom end opening inboard of overcoat is provided with defining flange; Cover is the hollow shape pipe box in the described activity, the bottom of cover is to be provided with at the bottom of the cover of eyelet in movable, the upper, open end of cover is arranged with v-shaped openings in movable, the bottom cylindrical of cover is provided with symmetrical axial ribs shape projection and symmetrical radial rib shape projection in movable, be provided with open slot between described v-shaped openings and the axial ribs shape projection, the top cylindrical of cover is provided with the projection band in the described activity, and the axial ribs shape projection of cover by its underpart and slide groove fitted shaft are in being movably arranged on overcoat in the described activity; Described blood taking needle is arranged on overcoat inside, and is positioned at the top of movable cover, and the stainless pin of blood taking needle is connected with the aerofoil profile needle handle, and the aerofoil profile needle handle comprises columniform handle body, is arranged with the aerofoil profile projection on the handle body, and the upper end of handle body is the spring connecting portion; Described spring is connected and composed by the compression spring and the extension spring of coaxial line, and an end of spring is connected with the spring connecting portion of blood taking needle needle handle, and the other end of spring is connected and fixed loam cake; Fixed cover is installed in outer set upper side.
2. the painless hemostix of disposable press-type safety according to claim 1 is characterized in that: the spring filament diameter of described extension spring and compression spring is 0.3-0.6mm, and the described extension spring of stating is 0.6:1-1.2:1 with the number of turns ratio that compresses spring.
3. the painless hemostix of disposable press-type safety according to claim 1, it is characterized in that: the spring connecting portion of the needle handle of described blood taking needle is the circular cylinder that has agnail.
4. the painless hemostix of disposable press-type safety according to claim 1, it is characterized in that: the top of described fixed cover is the plane, the below of fixed cover is provided with spring mounting groove and fixing lug boss, the upper end open inboard of described overcoat is provided with the top cover draw-in groove, and fixed cover is installed on the coat by fixing lug boss and top cover draw-in groove.
5. according to claim 1,2, the painless hemostix of 3 or 4 described disposable press-type safety, it is characterized in that: described spring comprises compression spring and the extension spring that forms with a steel wire coiling, the compression spring is connected with the spring connecting portion of the needle handle of described blood taking needle, and extension spring is connected with fixed cover.
6. the painless hemostix of disposable press-type safety according to claim 1, it is characterized in that: the stainless pin of described blood taking needle is provided with plastics and carefully overlaps, and the thin cover of described plastics is flat-shaped body.
7. the painless hemostix of disposable press-type safety according to claim 1, it is characterized in that: the upper end of described axial ribs shape projection is concordant with the upper surface of radial rib shape projection, and the top of radial rib shape projection is provided with open seam.
8. the painless hemostix of disposable press-type safety according to claim 1 is characterized in that: needle point one side of described aerofoil profile projection is V font inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206433456U CN201939347U (en) | 2010-12-06 | 2010-12-06 | Disposable touchpress safe hemostix causing no pain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206433456U CN201939347U (en) | 2010-12-06 | 2010-12-06 | Disposable touchpress safe hemostix causing no pain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201939347U true CN201939347U (en) | 2011-08-24 |
Family
ID=44466704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206433456U Expired - Fee Related CN201939347U (en) | 2010-12-06 | 2010-12-06 | Disposable touchpress safe hemostix causing no pain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201939347U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109124796A (en) * | 2018-09-28 | 2019-01-04 | 先临三维科技股份有限公司 | Injection moulding apparatus and its tooth mold forming method |
| PL424545A1 (en) * | 2018-02-08 | 2019-08-12 | Htl-Strefa Spółka Akcyjna | Safe needle device |
-
2010
- 2010-12-06 CN CN2010206433456U patent/CN201939347U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PL424545A1 (en) * | 2018-02-08 | 2019-08-12 | Htl-Strefa Spółka Akcyjna | Safe needle device |
| CN109124796A (en) * | 2018-09-28 | 2019-01-04 | 先临三维科技股份有限公司 | Injection moulding apparatus and its tooth mold forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102028479B (en) | One-off safe and indolent contact pressure type hemostix | |
| CN209092410U (en) | A kind of novel precharging injection syringe of one-hand operation | |
| CN201939347U (en) | Disposable touchpress safe hemostix causing no pain | |
| CN201939346U (en) | Disposable safe and painless hemostix | |
| CN203042317U (en) | Self-synchronizing negative pressure type biopsy sampling device capable of being reused for many times | |
| CN206852875U (en) | Anesthesia syringe with automatic injection function | |
| CN206687719U (en) | A kind of Novel blood taking needle | |
| CN202313225U (en) | Propelling mechanism of endoscopic hose | |
| CN101984269A (en) | Special extension/compression hybrid spring for hemostixes | |
| CN202065392U (en) | Special extension-compression combined spring for hemostix | |
| CN201603827U (en) | Needle tip forming die for needle heads of syringes and infusion sets | |
| CN211674261U (en) | Pen cap of blood sampling pen | |
| CN201806765U (en) | Pelvic floor puncture needle | |
| CN203042259U (en) | Blood taking needle | |
| CN204092508U (en) | Root of penis penis extends and increases exerciser and many combination penis exercise instruments | |
| CN215078605U (en) | Multi-head blood sampling pen | |
| CN104107135B (en) | Root of penis penis extends and increases exerciser and many combination penis exercise instrument and methods for using thems | |
| CN220656112U (en) | Medical and aesthetic appliance for injection | |
| CN202459283U (en) | Acupuncture needle carrying guard | |
| CN216570819U (en) | Needle for child diagnosis and treatment | |
| CN202637647U (en) | Novel anesthetic needle | |
| CN201286748Y (en) | Novel lumbar puncture needle | |
| CN201267614Y (en) | Acupuncture needle | |
| CN214911886U (en) | Needle extractor of implanted drug delivery device | |
| CN202568399U (en) | Novel needle head special for tumor interventional treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20121206 |