CN104665845A - Improved structure of top trigger disposable safety blood collector - Google Patents
Improved structure of top trigger disposable safety blood collector Download PDFInfo
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- CN104665845A CN104665845A CN201510108728.0A CN201510108728A CN104665845A CN 104665845 A CN104665845 A CN 104665845A CN 201510108728 A CN201510108728 A CN 201510108728A CN 104665845 A CN104665845 A CN 104665845A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
- A61B5/150106—Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
Abstract
The invention discloses an improved structure of a top trigger disposable safety blood collector. The improved structure comprises a jacket, a blood collection needle, a touch pressing cover, an elastic triggering member and a sterile protection cap rod, wherein the back end part of the side wall of the jacket is provided with two long guide holes; the inner surface of the side wall of the jacket is provided with a locking step; the blood collection needle consists of a needle handle and a needle body; an unlocking arm provided with locking teeth is arranged on the needle handle, and is partitioned into a locking arm segment and an unlocking arm segment by taking the position of the locking teeth as a boundary point; the touch pressing cover consists of a gland and two touch pressing arms; the two touch pressing arms are inserted into the inner cavity of the jacket; the outer side faces of the two touch pressing arms are provided with limiting teeth inserted into the two long guide holes respectively; the elastic triggering member is connected with the needle handle and the touch pressing cover; the elastic triggering member is a steel spring; the sterile protection cap rod is connected with a needle head part; the locking teeth are hooked with the locking step, thereby forming a blood collection needle locking structure; the inner side face close to the lower end part of each touch pressing arm is provided with a wedge-shaped bump for forming a wedge-shaped plug; when the touch pressing cover is pressed in a touching way, the unlocking arm is folded through the wedge-shaped plugs, thereby forming a blood collection needle unlocking structure. By adopting the structure, the blood collection trigger force is reduced, and the blood collection pressing pain is relieved.
Description
Technical field
The present invention relates to the chemical examination of medical and clinical blood and detect medical instruments field, espespecially " a kind of modified node method of upper triggering disposable safe hemostix ".
Background technology
" disposable safe hemostix " also claims " disposable safe blood taking needle " to be the main blood taking instrument of countries in the world clinical medicine in tip blood sampling chemical examination.Different according to triggering mode during blood sampling, be mainly divided into: above trigger disposable safe hemostix, lower triggering disposable safe hemostix and other triggering disposable safe hemostix.
The patent No. that wherein Rui Cheng Medical Devices Co., Ltd. in Beijing produces is: 201320667837.2, name is called " a kind of safe blood-taking needle of pressing type " patented product, it just belongs to a kind of typical " upper triggered safety hemostix ", and the trigger mechanism design of this kind " disposable safe hemostix " is on the top of hemostix.Operational approach is: patient's forefinger and middle finger hook a pair transverse process reinforcing scratches hands, thumb presses down after on finger abdomen that hemostix is fixed on by the person of adopting by movable gland, just as with syringe medicine injection, with making a concerted effort of three fingers, complete the unblock of hemostix locking structure, and realize the blood sampling program of inserting needle and the withdraw of the needle.
The two large advantages that above-mentioned hemostix has be " disposable lower triggered safety hemostix " incomparable.One is have highly simple feature from textural, generally only need 3-4 spare and accessory parts can realize the assembly of this hemostix, mainly eliminate the internal member in " lower trigger-type disposable safe hemostix " structure, internal member realizes only lock and the critical component unlocked, and therefore significantly reduces parts machining cost and the cost of material of hemostix; Two is on assembly program, because eliminating internal member, and then enormously simplify assembly program, achieves the simplification of assembling, the high efficiency in rapid and unit man-hour, and again reduces the assembly cost of this " safe hemostix ".Final because of more than the remarkable reduction of two kinds of costs, give and " above should trigger disposable safe hemostix " and in the competition of product and the accreditation of doctors and patients, lay solid price advantage.
Although above-mentioned hemostix has manufacture, advantage that assembly cost is low, also there are the defects in 3 designs, strictly have impact on sale and the use of this product, specific as follows:
1) have employed the elastomeric element being injection molded into S type with plastics, drive hemostix inserting needle and the withdraw of the needle, though reach the object reducing manufacturing cost and assembly cost, because plastics used functionally do not belong to elastomeric material category, thus not there is the various excellent and technical specification of elastomeric material.Final because of poor flexibility, cause some important parameter index of hemostix not up to standard, and have impact on its development prospect.The such as type apparition when storing, and it is responsive to ambient temperature in using, hardening when easily causing low temperature, and the shortcoming of deliquescing during high temperature, make to cause depth of needle inadequate because needle force amount diminishes during blood sampling, cause amount of bleeding not enough, sometimes need repeatedly repeatedly extrude and cause erythrocyte fragmentation haemolysis, and then have impact on blood examination quality; Again because inserting needle speed is obviously slack-off, and cause pain to be obviously greater than steel spring construction, this should be a kind of disappearance in human nature service.
2) being injection molded into S type with plastics and being used as elastomeric element, because there is the not only poor but also hard shortcoming of elasticity, causing the power required when triggering compression to have more at least more than 2-3 times than steel spring.And this excessive activation pressure, as patient when take a blood sample time control bad, the needle outlet that this power can be caused to put outside hemostix is end-acted by the finger abdomen of the person of adopting, and makes patient produce lower tenderness.
3) design of this hemostix exists larger design to omit, specifically this hemostix only devises locking structure, this locking structure is by a pair cantilever and hook firmly pintle hook lock the stopping for a pair on lock station rank in hemostix overcoat inner chamber projection on it, achieves and perfectly only locks object fast.But because not designing unlocking structure, thus can not realize easily unlocking percussion.When reality uses, patient is the unblock percussion object realizing this hemostix, must apply very large touch pressure.Because of the locking structure of this hemostix, not slide to unlock when unlocking, but realize unlocking object by a pair cantilever and the powerful stressed modification of the hook on it.The patent No. of producing as Beijing Rui Cheng Medical Devices Co., Ltd. is: 201320667837.2, in person mention in the beneficial effect of Instructions Page 4 the first row " need firmly press down during use, otherwise the combiner of plastics spring and needle body can not carry out launching release ".Its consequence is because firmly excessive (minimum also need the strength of more than 500 grams) there will be tenderness problem under the blood sampling that above-mentioned Article 2 puies forward equally.And the practical situation occurred when taking a blood sample the making a concerted effort of two respective additional force often, work together on the finger abdomen by the person of adopting, will significantly more than the higher limit pressing unblock and exert oneself in the industry, make patient produce the lower tenderness of significantly blood sampling, especially the lower tenderness of infant and child is just stronger.
Summary of the invention
The present invention provides a kind of and simplifies structure, reduces costs, ensures depth of needle, alleviates inserting needle pain, reduces blood sampling trigger force, improves the stability of inserting needle and significantly alleviate the disposable upper triggered safety hemostix of the lower tenderness of blood sampling for solving in known technology the technical problem that exists.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
A kind of modified node method of upper triggering disposable safe hemostix, comprise: overcoat, the leading section of overcoat is provided with the cover end, the cover end, is provided with needle outlet, the rearward end of overcoat is opening end, the sidewall of overcoat is provided with near the positional symmetry of rearward end two long guiding holes extended along overcoat cover length direction, the inner surface of sleeve side wall is provided with at the position, front end arranging long guiding hole only lock station rank; Blood taking needle, be placed in overcoat inner chamber, and can along the cover length direction linear slide of overcoat, it is made up of needle handle and the needle body be arranged on needle handle, the needle portion of needle body is stretched out from the front end of needle handle, needle handle is provided with the lock solution arm that the rearward end towards needle handle extends, the lateral surface separating arm is provided with only locks tooth at lock; Press lid, it presses arm by gland and two and forms, and two press arm is inserted into overcoat inner chamber from the opening end activity of overcoat, and two lateral surface pressing arm are arranged with spacing tooth in two long guiding holes being inserted into overcoat respectively and spacing after making to press lid; Elasticity firing member, the leading section of elasticity firing member is connected with the gland pressing lid with the rearward end of needle handle respectively with rearward end; Sterility protection cap bar, itself and needle portion are tightly connected, and its leading section is stretched out from the needle outlet of overcoat leading section; It is characterized in that: described elasticity firing member is steel spring; Described solution arm of locking stops hammerlock section and unlocking arm section with the position arranging only lock tooth for separation is divided into, and its termination hammerlock section is positioned at the leading section of needle handle, and unlocking arm section is positioned at the rearward end of needle handle; Lock is separated only lock tooth on arm and is mounted to coordinate form blood taking needle locking structure with the lock station rank of stopping on sleeve side wall, and makes elasticity firing member be in initial compression to treat cock; The medial surface pressing the nearly bottom of arm rest is provided with wedge shape projection, form wedge shape plug, pressing under the state that cover presses, wedge shape plug inserts along overcoat internal chamber wall and the lock gap of separating between arm, sliding matching structure is formed with unlocking arm section, lock is separated arm and is formed elastic deformation because sliding friction is stressed and draw in inside lock solution arm, and the generation slip split displacement driving the only lock tooth on lock solution arm synchronous with only lock station rank, until only lock tooth departs from the restriction on only lock station rank on sleeve side wall, form blood taking needle unlocking structure.
The technical scheme that the present invention can also take is:
It is single that described lock separates arm with the quantity of only lock tooth, locks the side that solution arm is arranged on needle handle.
It is each two that described lock separates arm with the quantity of only lock tooth, locks the both sides that solution arms are symmetricly set on needle handle for two.
The needle outlet of described overcoat leading section is prolate hole; Described sterility protection cap bar is made up of the hand holding handle part of shaft-like main part and flat lamellar; shaft-like main part and needle portion are tightly connected; hand holding handle part is stretched out from the needle outlet of overcoat leading section; main part is provided with near the one end be connected with hand holding handle part a pair self-locking fin be arranged symmetrically with; self-locking fin and hand holding handle part are 90 ° of angles; the inner face that self-locking fin overlaps the end with overcoat matches, and forms blood taking needle mistakenly hit and sends out safeguard structure.
The position that the inner face at the overcoat cover end matches with self-locking fin is provided with arc-shaped groove, and the front end face of described self-locking fin is provided with the arc surface matched with arc-shaped groove
Described only lock station rank are stopped lock by one that is located on sleeve side wall inner surface or symmetrically arranged two and are convexed to form.
The advantage that the present invention has and good effect are:
1) this modified node method coordinates the release mechanism that formed and elasticity firing member to adopt steel spring owing to having set up the unlocking arm section of separating arm by the wedge shape plug pressing arm end and lock, like this, significantly can reduce trigger force of taking a blood sample, and then also reduce and the blood sampling that cause under tenderness excessive due to trigger force;
2) elasticity firing member adopts steel spring, ensure that stable, enough large percussion force, not only can ensure the concordance of depth of needle and enough blood sampling volumes when each blood sampling like this, and inserting needle when significantly can reduce blood sampling bitterly, majority can realize hypodynia.
3) adopt this hemostix modified node method, when blood sampling operates, after on the finger abdomen only needing patient's thumb and middle finger to be fixed on by hemostix by the person of adopting, then with the forefinger of this hands downwards gently pressure press lid, easily can complete the blood sampling program of inserting needle and the withdraw of the needle.This hemostix mode of operation, compared to the mode of operation on existing hemostix, is more conducive to the verticality of hemostix and the stability of inserting needle.
4) this hemostix modified node method compares existing hemostix, to overcoat with press lid and all carried out simplified design, in addition, instead of existing plastics with steel spring and be injection molded into S type elastomeric element, so significantly save material cost, die cost and assembly cost.
Accompanying drawing explanation
The structural representation of the first embodiment of Fig. 1 the present invention;
Fig. 2 is the structural representation of blood taking needle in Fig. 1;
Fig. 3 is the perspective view of Fig. 1;
Fig. 4 is the structural representation that Fig. 3 removes part overcoat;
Fig. 5 is the structural representation of the second embodiment of the present invention;
Fig. 6 is the structural representation of blood taking needle in Fig. 5;
Fig. 7 is the perspective view that the second embodiment removes part overcoat;
Fig. 8 is the structural representation of overcoat in the present invention;
Fig. 9 is that the A of Fig. 8 is to schematic diagram;
Figure 10 is the structural representation pressing lid in the present invention;
Figure 11 is the structural representation of sterility protection cap bar.
In figure: 1, overcoat; 110, the end is overlapped; 111, needle outlet; 112, arc-shaped groove; 120, long guiding hole; 130, lock station rank are stopped; 140, raised ribs; 2, blood taking needle; 210, needle handle; 220, needle body; 230, arm separated by lock; 231, hammerlock section is stopped; 232, unlocking arm section; 240, only tooth is locked; 3, lid is pressed; 310, gland; 320, arm is pressed; 330, spacing tooth; 340, wedge shape is protruding; 4, elasticity firing member; 5, sterility protection cap bar; 510, main part; 520, hand holding handle part; 530, self-locking fin.
Detailed description of the invention
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Embodiment 1:
Refer to Fig. 1-4 and 8-11, a kind of modified node method of upper triggering disposable safe hemostix, comprising:
Overcoat 1, the leading section of overcoat is provided with the cover end 110, the cover end, is provided with needle outlet 111, the rearward end of overcoat is opening end, the sidewall of overcoat is provided with near the positional symmetry of rearward end two long guiding holes 120 extended along overcoat cover length direction, the inner surface of sleeve side wall is provided with at the position, front end arranging long guiding hole only lock station rank 130.
Blood taking needle 2, be placed in overcoat inner chamber, and can along the cover length direction linear slide of overcoat, it is made up of needle handle 210 and the needle body 220 be arranged on needle handle, the needle portion of needle body is stretched out from the front end of needle handle, arm 230 separated by the lock that the side rearward end be provided with towards needle handle extends on needle handle, the lateral surface of lock solution arm is provided with one and only locks tooth 240, described solution arm of locking stops hammerlock section 231 and unlocking arm section 232 with the position arranging only lock tooth for separation is divided into, it stops the leading section that hammerlock section is positioned at needle handle, and unlocking arm section is positioned at the rearward end of needle handle.Above-mentioned blood taking needle linear slide is installed on the structure usually adopted in overcoat inner chamber: on two opposing inner cavity wall of overcoat, arrange guide chute, the two relative side of needle handle arranges guide protrusions, guide protrusions is inserted in corresponding guide chute, makes both form linear slide and connects.
Press lid 3, it presses arm 320 by gland 310 and two and forms, two press arm is inserted into overcoat inner chamber from the opening end activity of overcoat, two lateral surface pressing arm are arranged with spacing tooth 330 in two long guiding holes being inserted into overcoat respectively and spacing after making to press lid, concrete, be affiliated to by two spacing teeth and avoid pressing the rear end slippage of lid from overcoat on the rear end face of corresponding long guiding hole, and then formation is rear spacing.
Elasticity firing member 4, the leading section of elasticity firing member is connected with the gland pressing lid with the rearward end of needle handle respectively with rearward end, and described elasticity firing member adopts steel spring.Concrete, the leading section of spring and the adoptable syndeton of the rearward end of needle handle are: arrange the support column arrangement matched with spring in the rearward end of needle handle, and raised points is set on the support columns, the leading section suit of such spring on the support columns after, limit spring by raised points and needle handle departs from; The rearward end of spring can adopt the rearward end of above-mentioned needle handle and the syndeton in spring at front end portion with the syndeton of the gland pressing lid, namely on gland, arranges support column arrangement, and arranges raised points on the support columns.In addition except the above-mentioned connected mode of employing, other connected modes often adopted also are suitable for, and such as on gland inner face, arrange inserting slot construction, are stuck in slot by the rear end of spring, so also can realize connecting.
Sterility protection cap bar 5, itself and needle portion are tightly connected, and its leading section is stretched out from the needle outlet of overcoat leading section.
Only lock tooth on above-mentioned lock solution arm mounts to coordinate form blood taking needle locking structure with the lock station rank of stopping on sleeve side wall, and makes elasticity firing member be in initial compression to treat cock.The above-mentioned medial surface pressing the nearly bottom of arm rest is provided with wedge shape projection 340, form wedge shape plug, pressing under the state that cover presses, wedge shape plug inserts along overcoat internal chamber wall and the lock gap of separating between arm, sliding matching structure is formed with unlocking arm section, lock is separated arm and is formed elastic deformation because sliding friction is stressed and draw in inside lock solution arm, and the generation slip split displacement driving the only lock tooth on lock solution arm synchronous with only lock station rank, until only lock tooth departs from the restriction on only lock station rank on sleeve side wall, form blood taking needle unlocking structure.In the present embodiment, separating arm due to lock is single arm structure, therefore only blood taking needle locking structure is formed in the side of needle handle, consider from the angle of satisfied unblock like this, only need to press in side and arm arranges wedge shape plug structure can realize unlocking function, but when considering that pressing lid is installed to outer putting, do not need deliberately centering position, thus save assembling man-hour and improve packaging efficiency, when actual production, press in both sides on arm and wedge shape plug structure is all set, like this, no matter that side presses after arm and locking structure align, all to realize unlocking pressing to cover in the process that presses down, thus add the motility pressing lid and install.When reality uses, for ensureing that pressing lid presses descending verticality and stability, the above-mentioned width being located at the spacing tooth pressed on facies lateralis brachii and the wedge shape projection be located on its medial surface is all less than the width pressing arm, like this, can two pairs of raised ribs 140 be set on overcoat internal chamber wall, the two pairs of raised ribs respectively and overcoat two long guiding holes are set two side between form two guide slides, like this, when pressing lid and pressing descending, two press arm is inserted in two guide slides respectively, forms stable straight line descending.
In said structure, the needle outlet of described overcoat leading section is prolate hole; Described sterility protection cap bar is made up of the hand holding handle part 520 of shaft-like main part 510 and flat lamellar; main part and needle portion are tightly connected; hand holding handle part is stretched out from the needle outlet of overcoat leading section; main part is provided with near the one end be connected with hand holding handle part a pair self-locking fin 530 be arranged symmetrically with; self-locking fin and hand holding handle part are 90 ° of angles; the inner face that self-locking fin overlaps the end with overcoat matches, and forms blood taking needle mistakenly hit and sends out safeguard structure.The reason that shaft-like main part arranges a pair self-locking fin is further: after hemostix adopts above-mentioned modified node method, when blood taking needle is pulled the trigger, be applied to and press the touch pressure covered and obviously diminish, through preliminary test, the touch pressure applied is only about 1/10 of the touch pressure be applied on existing product, like this, in the packing of product, transport and storage process in, hit by mistake because touching by mistake and just easily cause mistakenly hit to find the generation of elephant, therefore, for the generation avoiding mistakenly hit to find elephant, the shaft-like main part of sterility protection cap bar is provided with above-mentioned a pair self-locking fin, the front end of self-locking fin is made to be pressed on the inner face at the overcoat cover end, like this, when sterility protection cap bar is not taken off from blood taking needle, blood taking needle can be avoided to occur that mistakenly hit is sent out.
Send out reliability of structure for improving above-mentioned blood taking needle mistakenly hit further, the position that the inner face at the overcoat cover end matches with self-locking fin is provided with arc-shaped groove 112, and the front end face of described self-locking fin is provided with the arc surface matched with arc-shaped groove.Like this by the arc surface of self-locking fin front end face and coordinating of the arc groove at the cover end; just can form certain resistance to deflect to prevent sterility protection cap bar; but when applying slightly large twisting resistance; still can realize being separated of sterility protection cap bar and blood taking needle syringe needle; therefore do not affect when taking a blood sample, sterility protection cap bar is disassembled.
Adopt above-mentioned sterility protection cap bar structure; when assembling; after hand holding handle partially passes through the needle outlet of hemostix overcoat leading section, the end of a pair self-locking fin of perpendicular setting is just in time stuck in the arc-shaped groove at the overcoat cover end, and then achieves the locking that mistakenly hit sends out.In use; the method for dismounting of sterility protection cap bar is identical with the method for dismounting of sterility protection cap bar on existing hemostix; namely pinch hand holding handle part with hands and rotate; sterility protection cap bar and syringe needle are loosened; when a pair self-locking fin turns to the needle outlet aligned position of just in time overlapping with overcoat at the end; pull out sterility protection cap bar; the shaft-like main part of such self-locking fin and rear end easily passes smoothly from needle outlet; thus disassembled from blood taking needle by sterility protection cap bar, and then complete the readiness program before blood sampling.
In said structure, described only lock station rank are stopped lock by one that is located on sleeve side wall inner surface or symmetrically arranged two and are convexed to form.In the present embodiment, separating arm due to lock is single arm structure, single angle from meeting only lock is considered, only need the arranging only lock is protruding of inner surface at sleeve side wall, but when considering that blood taking needle is installed in overcoat, do not need deliberately centering position, thus save assembling man-hour and improve packaging efficiency, when actual production, the inner surface of sleeve side wall arranges symmetry two only lock projection, like this, lock is separated arm and is articulated in protruding upper all can the realization of arbitrary only lock and only locks, thus adds the motility of blood taking needle installation.
Embodiment 2:
Refer to Fig. 5-11, being distinguished as of the present embodiment and embodiment 1: describedly lock that to separate arm with the quantity of only lock tooth be each two, the both sides that arms are symmetricly set on needle handle separated by two locks, such two only lock tooth is all articulated in only lock station rank, formation pair locking structure.For this pair of locking structure, just need to press on arm in both sides all to arrange wedge shape plug structure, pressing in the process covered and press like this, act on by two wedge shape plugs the unlocking arm section that arm separated by two locks respectively, realize unlocking simultaneously.
Adopt the two locking structure in the present embodiment and adopt the single locking structure in embodiment 1, there is respective advantage respectively: under the prerequisite meeting inserting needle requirement, adopt two locking structure, the guide protrusions be located on needle handle and the quality of fit arranging guide chute on overcoat internal chamber wall are required it is not very high, and adopt single locking structure, the problem slightly tilted to side direction is there is for avoiding blood taking needle, just require higher to above-mentioned guide protrusions with the quality of fit of guide chute, but unidirectional locking structure has the advantage reducing material cost and reduce trigger force, namely be applied to press and cover less touch pressure, just can realize unlocking.
To sum up, the main improvement of modified node method basis triggering disposable safe hemostix is embodied in following several respects, and reaches corresponding technique effect:
1, brand-new Curve guide impeller has been carried out to only lock and the unlocking structure of hemostix.One section of special unlocking arm section is set up in the end that a pair cantilever of original product arranges hook, form the lock solution arm configuration in this patent, the pair of outside guide rail of former spring members and pair of inside guide rail are carried out simplified design simultaneously, formed and press by gland and two the tactile gland structure that arm forms, and press arm to two and do proper extension, and set up wedge shape plug structure at two medial surface pressing arm end, form slip unlocking structure by wedge shape plug with coordinating of unlocking arm section.Thus overcome original product because of without unlocking structure, when unlocking, required brute force presses down and makes the stressed modification in hook position of cantilever realize unlocking deficiency.Through test, adopt the hemostix of this unlocking structure, when taking a blood sample percussion, trigger force less than original 1/10, thus significantly reduces trigger force, facilitates operation, and then also eliminates and that bring shortcomings excessive due to trigger force.In addition, only press arm by a pair form owing to pressing lid, be therefore also conducive to realizing assembling fast.
2, be injection molded into the elastomeric element of S type or " it " font traditionally with plastics, because of its elasticity extreme difference, want to be compressed to duty, through the actual measurement of measurements of springs instrument, its applied pressure generally has more 2-3 strength doubly than steel spring.And because instead of the elastomeric element being injection molded into S type or " it " font with plastics with a steel spring in the present invention, therefore also just save 2-3 blood sampling trigger force doubly, and then obviously can reduce hemostix needle outlet end to the lower tenderness referring to abdomen tissue of taking a blood sample.This upper operating feature triggering hemostix in addition: the shell body holding steady hemostix with thumb and middle finger, trigger is pressed down again with forefinger, therefore hold steady the shell body of hemostix at thumb and middle finger while, the moment of trigger is pressed down at forefinger, attachedly can help and give hemostix one power upwards, and then hemostix needle outlet end of having offseted in various degree refers to the lower tenderness of abdomen tissue to blood sampling.The to sum up reason of two aspects, lower tenderness basis triggering hemostix generation is lighter than the needle outlet end of existing hemostix far away to the lower tenderness referring to abdomen tissue of taking a blood sample, also remarkable in existing lower triggering disposable safe hemostix, this is that Gospel is with meddlesome to adopting patient undoubtedly.
3, simplified design has been carried out to the overcoat of this kind of hemostix.Concrete, eliminate a pair transverse process reinforcing operated in blood sampling for forefinger and middle finger in orginal hemostix and scratch hands.Because the hemostix after improving have employed steel spring and sliding friction unlocking structure, trigger force during blood sampling is very little, after on the finger abdomen only needing patient's thumb and middle finger to be fixed on by hemostix by the person of adopting, press down the pressing lid of hemostix with the forefinger of this hands again and complete the blood sampling program of inserting needle and the withdraw of the needle, and on orginal hemostix transverse process reinforcing scratch hands without practical value so discard, so not only reduce apparent volume, also to be more convenient for packed and transported, during operation, to be more conducive to the verticality of blood taking needle and the stability of inserting needle.
4, instead of with a steel spring elastomeric element being injection molded into S type with plastics, comparatively satisfied realization drives the function of hemostix inserting needle and the withdraw of the needle, eliminate the shortcoming adopting plastics to be injection molded into the congenital defect of the elastomeric element of S type simultaneously, cause depth of needle inadequate because inserting needle strength is less when such as eliminating blood sampling, cause the shortcoming of amount of bleeding deficiency, thus avoid and repeatedly repeatedly need extrude and cause erythrocyte fragmentation haemolysis, and then have impact on the problem of blood examination quality.Adopt steel spring to increase percussion force, thus significantly improve inserting needle speed, thus significantly alleviate the pain of inserting needle, reach the object of human nature service.
5, instead of with a steel spring elastomeric element being injection molded into S type with plastics, to the eye, as the cost adding steel spring, in fact because of required steel spring cost only 0.47-0.5 divide left and right, the cost payout of the elastomeric element of S type is injection molded into much smaller than the special plastics of polyformaldehyde of about 30,000 one tons, and the P V C of completely available about 10,000 tons, PP or ABS replace Pom to press lid and needle handle and reduce cost of material further.And there is highly simple feature because of structure of the present invention, not only significantly reduce the processing cost of parts, also reduce Mould Machining cost, the spare and accessory parts cost of this hemostix is finally caused to be starkly lower than the spare and accessory parts cost of existing product, and the effect that the manufacturing cost achieving this Novel hemostix and selling price synchronously decline.
6, structure of the present invention has highly simple advantage, and just by how being convenient to rapid-assembling take seriously as an important design objective in the design starting stage, final when the assembling of product, fully achieve the height simplification of assembling and the rapid of assembling.Than traditional " disposable lower triggered safety hemostix " 6-7 average group second ETL estimated time of loading, about fast 4.5-5 second, assembling work efficiency is made to improve 3.5-4 doubly, thus reducing " disposable upper triggered safety hemostix " assembly cost significantly, assembly cost and selling price like this for finally reducing " disposable safe hemostix " have laid good basis again.
7, because this invention makes the program behavior of assembly operation, maximized simplification is obtained, so alleviate the single-piece physical demands of assembling workman significantly.Within legal man-hour, the product quantity of assembling is significantly improved, and then the emolument of assembling workman also can be made reasonably to be significantly improved, thus the maximized two effects that are full of realizing enterprise and assembling workman.
Claims (6)
1. the upper modified node method triggering disposable safe hemostix, comprise: overcoat, the leading section of overcoat is provided with the cover end, the cover end, is provided with needle outlet, the rearward end of overcoat is opening end, the sidewall of overcoat is provided with near the positional symmetry of rearward end two long guiding holes extended along overcoat cover length direction, the inner surface of sleeve side wall is provided with at the position, front end arranging long guiding hole only lock station rank; Blood taking needle, be placed in overcoat inner chamber, and can along the cover length direction linear slide of overcoat, it is made up of needle handle and the needle body be arranged on needle handle, the needle portion of needle body is stretched out from the front end of needle handle, needle handle is provided with the lock solution arm that the rearward end towards needle handle extends, the lateral surface separating arm is provided with only locks tooth at lock; Press lid, it presses arm by gland and two and forms, and two press arm is inserted into overcoat inner chamber from the opening end activity of overcoat, and two lateral surface pressing arm are arranged with spacing tooth in two long guiding holes being inserted into overcoat respectively and spacing after making to press lid; Elasticity firing member, the leading section of elasticity firing member is connected with the gland pressing lid with the rearward end of needle handle respectively with rearward end; Sterility protection cap bar, itself and needle portion are tightly connected, and its leading section is stretched out from the needle outlet of overcoat leading section; It is characterized in that: described elasticity firing member is steel spring; Described solution arm of locking stops hammerlock section and unlocking arm section with the position arranging only lock tooth for separation is divided into, and its termination hammerlock section is positioned at the leading section of needle handle, and unlocking arm section is positioned at the rearward end of needle handle; Lock is separated only lock tooth on arm and is mounted to coordinate form blood taking needle locking structure with the lock station rank of stopping on sleeve side wall, and makes elasticity firing member be in initial compression to treat cock; The medial surface pressing the nearly bottom of arm rest is provided with wedge shape projection, form wedge shape plug, pressing under the state that cover presses, wedge shape plug inserts along overcoat internal chamber wall and the lock gap of separating between arm, sliding matching structure is formed with unlocking arm section, lock is separated arm and is formed elastic deformation because sliding friction is stressed and draw in inside lock solution arm, and the generation slip split displacement driving the only lock tooth on lock solution arm synchronous with only lock station rank, until only lock tooth departs from the restriction on only lock station rank on sleeve side wall, form blood taking needle unlocking structure.
2. the modified node method of upper triggering disposable safe hemostix according to claim 1, is characterized in that: described lock is separated arm and stopped the quantity of locking tooth is single, and the side that arm is arranged on needle handle separated by lock.
3. the modified node method of upper triggering disposable safe hemostix according to claim 1, is characterized in that: described lock is separated arm and stopped the quantity of locking tooth and is respectively two, and the both sides that arm is symmetricly set on needle handle separated by two locks.
4. the modified node method of upper triggering disposable safe hemostix according to claim 1, is characterized in that: the needle outlet of described overcoat leading section is prolate hole; Described sterility protection cap bar is made up of the hand holding handle part of shaft-like main part and flat lamellar; shaft-like main part and needle portion are tightly connected; hand holding handle part is stretched out from the needle outlet of overcoat leading section; main part is provided with near the one end be connected with hand holding handle part a pair self-locking fin be arranged symmetrically with; self-locking fin and hand holding handle part are 90 ° of angles; the inner face that self-locking fin overlaps the end with overcoat matches, and forms blood taking needle mistakenly hit and sends out safeguard structure.
5. the modified node method of upper triggering disposable safe hemostix according to claim 4, it is characterized in that: the position of matching with self-locking fin on the inner face at the overcoat cover end is provided with arc-shaped groove, and the front end face of described self-locking fin is provided with the arc surface matched with arc-shaped groove.
6. the modified node method of upper triggering disposable safe hemostix according to claim 1, is characterized in that: described only lock station rank are stopped lock by one that is located on sleeve side wall inner surface or symmetrically arranged two and convexed to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510108728.0A CN104665845A (en) | 2015-03-10 | 2015-03-10 | Improved structure of top trigger disposable safety blood collector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510108728.0A CN104665845A (en) | 2015-03-10 | 2015-03-10 | Improved structure of top trigger disposable safety blood collector |
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| CN104665845A true CN104665845A (en) | 2015-06-03 |
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| CN201510108728.0A Pending CN104665845A (en) | 2015-03-10 | 2015-03-10 | Improved structure of top trigger disposable safety blood collector |
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| CN106859670A (en) * | 2017-04-07 | 2017-06-20 | 王振民 | The anti-frightened anti-pollution safe strength blood taking needle of hypodynia sense brace type |
| CN107007288A (en) * | 2017-05-19 | 2017-08-04 | 厦门市联合安金科技有限公司 | Disposable blood taking device |
| CN109646019A (en) * | 2019-02-15 | 2019-04-19 | 苏州施莱医疗器械有限公司 | Modified tail portion push type disposable safe hemostix |
| CN111166348A (en) * | 2018-11-12 | 2020-05-19 | 天津华鸿科技股份有限公司 | Blood taking needle |
| CN111214244A (en) * | 2019-09-17 | 2020-06-02 | 天津华鸿科技股份有限公司 | Blood taking needle and blood taking pen with same |
| CN113349772A (en) * | 2020-03-04 | 2021-09-07 | 天津华鸿科技股份有限公司 | Blood taking needle |
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Application publication date: 20150603 |