CN102835961B - Three-spring portable painless blood sampling pen with disposable pen point - Google Patents
Three-spring portable painless blood sampling pen with disposable pen point Download PDFInfo
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- CN102835961B CN102835961B CN201210363962.4A CN201210363962A CN102835961B CN 102835961 B CN102835961 B CN 102835961B CN 201210363962 A CN201210363962 A CN 201210363962A CN 102835961 B CN102835961 B CN 102835961B
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Abstract
The invention relates to a three-spring portable painless blood sampling pen with a disposable pen point. The three-spring portable painless blood sampling pen comprises a main pen and the disposable pen point, wherein the main pen comprises a pen cap, a trip rod, a rod entering pressure spring and a rod retreating pressure spring, a locking structure, an unlocking button and a drawing rod retreating structure. The three-spring portable painless blood sampling pen is characterized that the disposable pen point comprises a pen point jacket; a needle exposing hole is arranged at the front end of the pen joint jacket; an opening end is arranged at the rear end of the pen joint jacket; a blood sampling needle is installed in the pen point jacket and can linearly slide along a cavity of the pen pint jacket under an external force; a needle returning pressure spring is installed between the front end of a needle body and the inner wall at the front end of the pen point jacket; a limit structure preventing the blood sampling needle from slipping off is arranged at the rear end of the pen point jacket; the rear end of the pen point jacket is connected with the front end of the main pen cap in a detachable plug-in mounting way; and the blood sampling pen also comprises a needle head asepsis seal structure. Compared with the prior art, the blood sampling pen provided by the invention has the following characteristics that the operation and the use are convenient, the cost for one-time use is low, the cross infection and the environmental pollution can be avoided, and the speed for retreating the needle can be improved, thereby pain of patients is eliminated or relieved, and the packaging and the transport are convenient.
Description
Technical field
The invention belongs to the tip blood taking instrument of clinical medicine domain, be specially the painless blood collecting pen of disposable written three spring portable.
Background technology
The tip blood sampling of clinical blood chemical examination is a kind of blood-sampling method maximum in Clinical practice, is also a kind of not only simple but also difficult blood-sampling method.Simple reason is: as long as at tip blood sampling site blood taking needle thrust skin and exit skin, reaches hemorrhage object and complete to collect the overall process that blood sample can complete blood sampling, the reason of difficulty is: how to design a kind of ending blood taking instrument, ensureing the prerequisite without cross infection and environmental pollution, really accomplish simple and practical, simple operation, cheap manufacturing cost and use cost should be ensured, ensure when taking a blood sample again, accomplish inserting needle not bitterly, going out pin, bitterly not different from after pin (inserting needle crosses pain after the pin that deeply can produce different time, the longlyest reach 24 hours), and ensure that sufficient blood sampling volume (is avoided repeatedly extruding the generation pointed and cause Squeezing ground haemolysis, affect the accuracy of result of laboratory test), needed for clinical assay.
At present, main flow tip blood taking instrument clinically, based on blood collecting pen and disposable safe hemostix.Blood collecting pen has single use, sharpest edges with low cost; because it only changes blood taking needle at every turn; do not need to change the blood sampling cap for brush; but there is sterilization difficulty; very easily cause cross infection; after blood sampling, syringe needle can not realize automatic protection, easily occurs environmental pollution and the cumbersome deficiency of each installing/dismounting cap for brush and shortcoming.Now forbid using (only limit the use of diabetes patient's self detecting blood sugar, but there will be the pinprick infection problems of individuals patients) in hospital.And the pluses and minuses of disposable safe hemostix and blood collecting pen are very good contrary, it thoroughly solves cross infection problem, but because of single use high cost, is not easily accepted by most hospital and patient, causes numerous hospital to be in dilemma.Some hospital directly buys the special disposable blood taking needle of blood collecting pen now, the blood sampling work of advance and retreat pin is directly completed with hand-held pin, even when the generaI investigation blood sampling of giving infant and students in middle and primary schools, blood sampling work is completed too by this way, therefore significantly increase by the pain of blood sampling people, some is because keenly feeling obviously, that is understood instinct by blood sampling people draws back finger, if now patient is not also able to do in time the withdraw of the needle, just there will be the blood collection needles scratching fingers phenomenon of Rhizoma Sparganii shape, give and caused certain body and mind painful by blood sampling people.
Therefore, there are numerous knowledgeable people and enterprise, want the respective advantages traditional blood collecting pen and disposable safe hemostix, remove respective shortcoming, realize a kind of brand-new Novel blood-collecting pen.And the situation of reality is, although numerous knowledgeable people or enterprise, paid a large amount of energy, manpower and financial resources for this reason, but because of respective limitation reason (that such as understands medical science is ignorant of industrial design, and that learns industrial design is ignorant of medical science on the contrary), make product or the Patent design scheme of design, the deficiency that existence is in various degree such or such, its design or product, be difficult to be accepted by market, can not obtain the satisfied accreditation of most doctors and patients, concrete simple example is as follows:
1, some existing designs, because of too complicated in design on chief editor, not only add manufacturing cost and selling cost, also because of the operation sequence that newly increases and action, medical personnel are caused to need to change the original operating habit be familiar with, and add the workload of medical personnel, be thus difficult to by vast medical care colleague accreditation.
2, some existing designs, although adopt disposable nib, solve the problem of cross infection, but the trip rod because of blood collecting pen only has a spring, and the two ends of this spring are connected and fixed design, cause only having inserting needle function, but without withdraw of the needle function, thus blood taking needle is caused not realize the withdraw of the needle, not only cause blood sampling pain, also can cause because patients fingers pain is obvious, occur the retraction (mainly child) of instinct, cause skin tears phenomenon, this is maximum design error.
3, some existing designs, in order to simplify structure and save cost, have employed the method for designing that a spring only used by main flow disposable safe hemostix, its two ends are connected and fixed, although advance and retreat pin function when can complete blood sampling, but because will the withdraw of the needle be realized, just must utilize the inserting needle inertia of trip rod, the stage clip of freedom of entry state is forced to elongate 3-4mm (using as extension spring), realize the object of inserting needle, and realize withdraw of the needle function by the retraction naturally of the stage clip elongated, and for stage clip, its function is exactly discharged by the kinetic energy produced after compression, when stage clip returns to free state (length) completely, it has completed the work mission of stage clip, as now elongated 3-4mm in pressure, the kinetic energy loss produced stage clip is after tested very large, its result significantly reduces inserting needle speed exactly, because force the process of elongating to be exactly reduce the process of inserting needle speed, generally can affect the inserting needle speed of about 30%, the main reason of obviously pain is caused when being also and causing tip to be taken a blood sample, consider from hommization angle, this kind of design is the most worthless.
4, application number is: 200410064671.0, and name is called: the patent of invention of " needle tip retracts type disposable safe blood taking needle and primary emission type safety blood taking pen ".The stage clip connected by the trip rod in chief editor during this blood collecting pen inserting needle compresses the shock realizing trip rod with release, and the realization of withdraw of the needle function, but come with distortion by the sliding friction between a pair elastic pressuring plate that the V inclined-plane of disposable written overcoat inherent its underpart design and blood taking needle needle handle body design.This kind of design is feasible in principle, but actual effect is undesirable through simulation test.One is because the elastic characteristic of flexure strip is compared with steel stage clip, and its effective modification amount is the poorest, is subject to again the restriction of written overcoat intracavity diameter and length on this basis, and its elastic deformation measures and can reduce further, affects its withdraw of the needle effect and the increasing of inserting needle resistance; Two is lean on elastic pressuring plate and the bibeveled slip of V-type to realize withdraw of the needle function, frictional resistance must be caused significantly to strengthen, its idle work power is made obviously to increase and reduce useful work, its result causes withdraw of the needle speed obviously slack-off exactly, cause the overstand of syringe needle in skin, cause heavier foreign body to stimulate pain and withdraw of the needle pain, this is the greatest drawback of this kind of design ap-plication to blood sampling withdraw of the needle field, is not suitable for very much human oriented design and the service of painless blood sampling.
5, some existing designs, are connected disposable detachable nib with the installation of chief editor, under the prerequisite of latch-up-free device, simple adopt slip plug-in type connected mode, be lack this aspect practical experience caused by.Because single being slidably matched not only easily comes off but also affects blood sampling effect.Because when taking a blood sample, because chief editor's trip rod of rapid movement clashed into the moment of blood taking needle backshank end, under the impact of active force and counteracting force, disposable nib and the effective insertion depth of chief editor is easily caused to change, occur in various degree skid off phenomenon, can have a strong impact on effective depth of needle of blood taking needle syringe needle, cause the deficiency of blood sampling volume, individual cases even there will be syringe needle and cannot thrust skin and be positioned at the phenomenon that depletion of blood can adopt and occur.
6, application number is: 200920227728.2, and name is called: the patent of invention of " a kind of blood collecting pen " discloses a kind of blood collecting pen avoiding cross infection.But because of single use pen head part complicated structure, cause the manufacturing cost of its part and assembly cost higher, finally its integrated cost is close to some disposable safe hemostix.From nonrecurring charge expenditure angle, it has lost the practical significance that Novel blood-collecting pen uses, because once mix special blood-drawing chief editor again and be connected accordingly and unload program, not as good as next convenient and swift of the direct disposable blood taking device slightly high by price.
In addition, because of the congenital design defect of disposable nib, cause the blood taking needle needle body bar in written overcoat long, be significantly longer than the length of written overcoat, extreme difficulties can be brought to packaging of dispatching from the factory, long-distance transport like this.Because mutually laminating and under the inertia impact jolting with brake being subject to vehicle at many casees, blood taking needle needle body bar no matter in nib is vertically stressed or lateral stressed up and down, long needle body bar all can be caused stressed excessive, cause small and weak blood collection needles generation modification fixing on needle body and damage.In addition, this disposable nib is after blood sampling completes, and the needle body with syringe needle may be free to slide in the inner chamber of written overcoat, causes blood collection needles to expose, and easily causes accidental injury or environmental pollution.
In a word, because of Novel blood-collecting pen and the character of use of disposable nib and the restriction of its volumetric spaces, determining blood collecting pen must be highly simple and very practical.Want the defect and the deficiency that solve the existence of current blood collecting pen, except will drawing the strong point of prior art, also must make an effort in details part, because the design in this field is invented, more embodiments be detailed design determine success or failure, so in detailed design, the comprehensive Design thought of in many ways serving must be defined as.Being specially: under guarantee prevents the prerequisite of cross infection and environmental pollution, must first accomplish as medical personnel design, making medical personnel more convenient and swift better when operating; Two is be patients design, not good during blood sampling; Three is for enterprise designs, and structure height is simple, assembles quick and convenient, finally makes comprehensive manufacturing cost more low better; Four is for analytical quality designs, take a blood sample more sufficient better (because of once there is insufficiency of blood, patient repeatedly need extrude and make it hemorrhage, and cause hematoclasis, produce haemolysis, the accuracy of result of laboratory test can be had a strong impact on), only in this way, just likely really design and take into account each side's demand, obtain each side's affirmative and wholehearted Novel blood-collecting pen of welcoming.
Summary of the invention
The present invention for solve in known technology the technical problem that exists and provide a kind of operation rapid and convenient, use cost cheap, avoid cross infection and environmental pollution; Improve inserting needle and withdraw of the needle speed, thus eliminate or alleviate patient's pain, and blood sampling volume is sufficient; And be convenient to the painless blood collecting pen of disposable written three spring portable of manufacture, assembling, packed and transported.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is:
The painless blood collecting pen of disposable written three spring portable, comprise chief editor and disposable nib, described chief editor comprises the pen cap be made up of jacket and inner sleeve, be slidably mounted on the trip rod in pen cap inner chamber, be arranged on entering bar stage clip and moving back bar stage clip on trip rod, be located at the locking structure between trip rod and inner sleeve, unlock button is on the coat installed, the drawing type be connected with trip rod rear end moves back bar structure, it is characterized in that: described disposable nib comprises written overcoat, the front end of nib overcoat is provided with needle outlet, nib overcoat rear end is opening end, in described written overcoat, the blood taking needle be made up of needle body and syringe needle is installed, under external force, described blood taking needle can slide along written overcoat linear interior, back stitching stage clip is installed between the front end of needle body and the front inner wall of written overcoat, the rear end of nib overcoat is provided with the position limiting structure preventing blood taking needle from skidding off, described written overcoat rear end and the front end of chief editor's pen cap are that detachable plug-in mounting is connected, described blood collecting pen also comprises needle sterile hermetically-sealed construction.
The technical scheme that the present invention can also take is:
Described inner sleeve is made up of first point of inner sleeve and second point of inner sleeve, described first point of inner sleeve coordinates with described overcoat plug-in mounting, the front end of described first point of inner sleeve and the rear end of second point of inner sleeve are threaded connection, and the front end of described second point of inner sleeve is connected with the detachable plug-in mounting in written overcoat rear end.
Put in described second point and be at least provided with an elastic pressuring plate near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth, and the lateral surface of elastic pressuring plate is provided with manual unlocking tabletting; Put outside described nib and be provided with near the position of rear end the annular projection matched with self-locking tooth, the end face of described annular projection and the medial surface of self-locking tooth are that right-angle surface coordinates.
Put in described second point and be at least provided with an elastic pressuring plate near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth; Put outside described nib and be provided with near the position of rear end the annular projection matched with self-locking tooth, the two sides of described self-locking tooth are inclined-plane, and the end face of described annular projection and the medial surface of self-locking tooth are that inclined-plane coordinates.
Described chief editor is also provided with and moves back bar handle, described in move back bar handle and be made up of handle body and handle bar, described handle body is located at pen cap outside, and described handle bar is connected through vertical with trip rod after jacket and inner sleeve; Described jacket and inner sleeve is provided with the elongated hole that can make to move back bar handle and vertically move along the pen cap.
Described position limiting structure is laterally towards spacing preiection, described spacing preiection and written overcoat integrated injection molding that cavity direction in it extends along written overcoat.
Described position limiting structure is end cap, and described end cap plug-in mounting is fixed on written overcoat opening end, and described end cap is provided with the access opening that trip rod can be made to pass.
Described needle sterile hermetically-sealed construction is the two shell fragment Self-locking type sealed caps be connected with syringe needle one, described pair of shell fragment Self-locking type sealed cap is integrated injection structure, and it is formed by with the main part of needle contact, the hand holding handle part passed from the needle outlet of written overcoat and two shell fragments be located at hand holding handle part two sides; The front end face of described written overcoat is provided with the groove matched with shell fragment, and the free end of two shell fragments inserts in groove and forms self-locking.
Described needle sterile hermetically-sealed construction is integral type spininess cap seal box, and sealing box is made up of box body, lid and the multiple pin caps be distributed in box body; All can plug-in mounting disposable nib on each pin cap, each pin cap is formed by being sleeved on syringe needle collar portion and can being sleeved on the outer outer tube sleeve part put of nib.
The front end face of described written overcoat is at least provided with a micro-protrusions.
The advantage that the present invention has and good effect are:
1, break the mentality of designing of existing blood collecting pen one to two spring, this blood collecting pen adopts three unique spring formula designs, with three elastic stage clips of difference, completes respective design function.One is devise into bar stage clip for the trip rod in chief editor and move back bar stage clip, and these two stage clips realize quick ejection and snapback (reset) function of trip rod respectively.The advantage of design two stage clips is: the different elasticity of two stage clips can be utilized to clash into the best inserting needle speed of the blood taking needle needle body in disposable nib and best withdraw of the needle speed to optimize trip rod, this be realize blood taking needle not bitterly with the key of hypodynia.Two is that blood taking needle leading section devises the 3rd miniature stage clip, i.e. back stitching stage clip in disposable nib.Feature is: be first thoroughly separated with the bar power that moves back of chief editor by the withdraw of the needle power of blood taking needle, the trip rod without chief editor completes withdraw of the needle function, and blood taking needle, after realization blood sampling inserting needle, leans on back stitching stage clip complete independently withdraw of the needle function completely.Its advantage is: one, not needing blood taking needle needle rear end to carry out any connection and locking when taking a blood sample with chief editor's trip rod, thus saving connection and the locking mechanism of more complicated; Two, on the basis of saving above-mentioned connection locking mechanism, blood taking needle needle body foot piece can be designed to short-tail bar or anury rod-type formula, make whole blood taking needle all written jacket internal of interior plant, thus thoroughly avoid because written overcoat is longer than by needle body foot piece, cause product at packaging, extruding in transportation and storage link and shock, and cause the syringe needle being fixed on needle body front end to occur damaging or distortion and the normal blood sampling of impact; Three, back stitching stage clip is arranged on the front end of blood taking needle needle body, only in the moment that chief editor excites, needle body afterbody is under the high-speed impact of chief editor's trip rod effective travel, back stitching stage clip is caused to be compressed, cause the displacement of blood taking needle generation Fast synchronization forward rectilinear, syringe needle quickly passes through the needle outlet of written overcoat front end, completes the inserting needle function of blood sampling.After chief editor's trip rod completes inserting needle function, the bar stage clip that moves back in chief editor is started working, trip rod is rebounded rapidly reset, while trip rod retraction, energy stretched condition released by back stitching stage clip also synchronous entering from compressive state, and blood taking needle is pushed back the original state before pin, complete the overall process of the blood sampling inserting needle withdraw of the needle.That is, blood taking needle in nib overcoat, can not stretch out the rear end limited location structure of written overcoat is spacing, back stitching stage clip lifting under free stretched condition is had near the position of front end at written overcoat, cause the syringe needle of blood taking needle, except the moment in blood sampling ejects, it is positioned at written jacket internal all the time, therefore avoids syringe needle and exposes and to hurt sb.'s feelings and to environment.
2, chief editor's inner sleeve is designed to two-part structure by the present invention.Because of under high-frequency service condition, the position that chief editor is the most easily damaged is that the connection of chief editor's pen cap and written overcoat locks position.This position because occurring that wearing and tearing transition and causing is connected and fixed bad, thus can cause chief editor's premature failure.The present invention considers from the angle of value engineering, inner sleeve is made two independent segmented structures, is namely made up of first point of inner sleeve and second point of inner sleeve.Wherein second point of cover two ends is connected with first point of inner sleeve and written overcoat respectively.Second point of inner sleeve (minimumly uses 3000 times through testing) after Reusability, damage once appearance or connect the not good phenomenon of locking, a second point of inner sleeve for subsequent use be simultaneously equipped with chief editor can be changed immediately, and make other parts of chief editor continue life-time service, thus can obviously reduce because of chief editor's premature failure, and the waste caused.Because the cost of second point of inner sleeve is less than 1/10 of chief editor's cost, obviously this kind of design is scientific and reasonable.
3, breaking through existing blood collecting pen must bimanualness cause bothersome troublesome shortcoming with not enough, locks onto the handling of disposable nib, all can accomplish one-handed performance from the retrogressing of chief editor's trip rod, and simple and fast.Thus, greatly facilitate the operation of medical personnel and alleviate the labor intensity of medical personnel, and shortening blood sampling time.As long as the front port of chief editor's pen cap to be aligned substantially the rear port of written overcoat, both are under the guiding of guiding surface, can put in place and synchronously complete appropriateness locking (again without the need to adopting traditional blood collecting pen nib to be screwed on the loaded down with trivial details action screwed off) by quick insertion, entering blood sampling state.After blood sampling, still utilize single-hand handling & pen can unload by the disposable nib crossed rapidly, and enter program of next time taking a blood sample.The concrete grammar of removing replaceable nib is: utilize thumb and forefinger to press from both sides the head that holds a pen and pull out to extrapolation, and its excess-three refers to that adding the centre of the palm holds chief editor, can unload nib smoothly.
4, cheap.Because disposable pen head component is few, every part is very simple again, can realize the production in enormous quantities of one-mold multiple-member completely, and assembling also can accomplish simple and fast.Concrete, first back stitching stage clip is put into written overcoat from the opening end of written overcoat, and then whole blood taking needle is all inserted in written overcoat from the opening end of written overcoat, owing to there being the restriction of opening end position limiting structure, after blood taking needle is inserted into written overcoat inner chamber, cannot skid off in written overcoat, namely the assembling of disposable nib has accused.Because the manufacturing cost of disposable nib and disposable single use cost significantly reduce, thus the integrated cost of disposable nib is significantly lower than disposable safe hemostix, and both differ 2-6 doubly left and right.
5, there is the painless feature of blood sampling.Because this Novel blood-collecting pen adopts three unique spring formula designs, while three springs complete respective using function, best optimal design can be realized.In guarantee the fastest inserting needle speed and withdraw of the needle speed, realize advance and retreat pin not bitterly or under the prerequisite of hypodynia, shorten the inertia time of staying of needle point in skin of causing because trip rod inertia is excessive, and then eliminate the foreign body zest pain of needle point in tissue.In addition, because this Novel blood-collecting pen can realize the accurate control of depth of needle, under the prerequisite ensureing enough blood sampling volumes, the pain of the pinprick after blood sampling can be eliminated completely, because no matter considering from anatomical physiology of man's angle, or on practical experience, during blood sampling, once inserting needle excessively dark (this point specially refers to human body tip position, the finger abdomen position of particularly taking a blood sample), pinprick pain is there is, the longest sustainable 24 hours of its pain time after must causing pin.In addition, because disposable written front end face is designed with miniature small embossment, this miniature small embossment both can play disposable nib and the sliding problem referring to Pericarpium Arecae skin when preventing from taking a blood sample, can stimulate the gentleness that skin produces because of this miniature small embossment again, and the danger spot refractory stage utilizing this gentleness to stimulate the nerve conduction principle of generation to produce and relative refractory period, realize the painless of inserting needle and hypodynia effect, thus achieve the actual object of dual fail-safe for the design of painless blood collecting pen.
6, there is Anti-stabbing, anti-cross infection and environment-friendly function.Because the syringe needle of this Novel blood-collecting pen is except the moment ejection of blood sampling, ensconces in written overcoat all the time, thus there is Anti-stabbing function, be also conducive to environmental conservation.In addition, this disposable nib is only with once cancelling at once, thus cross infection problem when thoroughly solving blood sampling.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the exploded view of Fig. 1;
Fig. 3 is the structural representation of chief editor;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the connected mode 1 of chief editor's pen cap and written overcoat;
Fig. 7 is the partial enlarged drawing of Fig. 6;
Fig. 8 is the axonometric chart of Fig. 6;
Fig. 9 is the exploded view of Fig. 8;
Figure 10 is the connected mode 2 of chief editor's pen cap and written overcoat;
Figure 11 is the partial enlarged drawing of Figure 10;
Figure 12 is the axonometric chart of Figure 10;
Figure 13 is the exploded view of Figure 12;
Figure 14 is the package assembly 1 of disposable nib;
Figure 15 is the exploded view of Figure 14;
Figure 16 is the package assembly 2 of disposable nib;
Figure 17 is the exploded view of Figure 16;
Figure 18 is the package assembly 3 of disposable nib;
Figure 19 is the exploded view of Figure 18;
Figure 20 is sterile sealing structural implementation 1;
Figure 21 is the exploded view of Figure 20;
Figure 22 is sterile sealing structural implementation 2;
Figure 23 is the using state reference diagram of Figure 22.
In figure: 1, chief editor; 1-1, overcoat; 1-2, inner sleeve; 1-2-1, first point of inner sleeve; 1-2-2, second point of inner sleeve; 1-2-2-1, elastic pressuring plate; 1-2-2-2, self-locking tooth; 1-2-2-3, manual unlocking tabletting; 1-3, trip rod; 1-4, enter bar stage clip; 1-5, move back bar stage clip; 1-6, locking structure; 1-7, unlock button; 1-8, move back bar structure; 1-9, move back bar hands handle; 1-9-1, handle body; 1-9-2, handle bar; 2, disposable nib; 2-1, written overcoat; 2-1-1, needle outlet; 2-1-2, opening end; 2-1-3, annular projection; 2-1-4, spacing preiection; 2-1-5, fluting; 2-2, blood taking needle; 2-2-1, needle body; 2-2-2, syringe needle; 2-3, back stitching stage clip; 2-4, end cap; 2-4-1, access opening; 2-5, two shell fragment Self-locking type sealed cap; 2-5-1, main part; 2-5-2, hand holding handle part; 2-5-3, shell fragment; 2-6, integral type spininess cap seal box; 2-6-1, box body; 2-6-1-1, interior collar portion; 2-6-1-2, outer tube sleeve part; 2-6-2, lid; 2-7, micro-protrusions.
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:
Refer to Fig. 1-2 3, the painless blood collecting pen of disposable written three spring portable, comprise chief editor 1 and disposable written 2.Described chief editor comprise the pen cap be made up of overcoat 1-1 and inner sleeve 1-2, the trip rod 1-3 be slidably mounted in pen cap inner chamber, be arranged on trip rod enter bar stage clip 1-4 and move back bar stage clip 1-5, be located at locking structure 1-6 between trip rod with inner sleeve, unlock button 1-7 be on the coat installed, the drawing type that is connected with trip rod rear end moves back bar structure 1-8.Described disposable nib comprises written overcoat 2-1, and the front end of written overcoat is provided with needle outlet 2-1-1, and written overcoat rear end is opening end 2-1-2.Be provided with the blood taking needle 2-2 be made up of needle body 2-2-1 and syringe needle 2-2-2 in described written overcoat, under external force, described blood taking needle can slide along written overcoat linear interior.Concrete, the linear slide of blood taking needle in written overcoat is the linear slide of non-beat, does not swing to ensure that syringe needle thrusts after patient refers to abdomen, thus reduces the pain of patient as far as possible.The needle body of nib overcoat inner chamber and blood taking needle can adopt the fit structures such as square face, rounded face, ellipsoid.When both adopt square face and ellipsoid fit structure, when blood taking needle slides in pen cap inner chamber, beat can not be there is; When both adopt rounded face fit structure, there is beat when sliding in pen cap inner chamber for avoiding blood taking needle, needing guide vane gathering sill being set and matching with it between.Between the front end of needle body and the front inner wall of written overcoat, be provided with back stitching stage clip 2-3, the rear end of written overcoat is provided with the position limiting structure preventing blood taking needle from skidding off.Described written overcoat rear end is connected with the detachable plug-in mounting in the front end of chief editor's pen cap.Described blood collecting pen also comprises needle sterile hermetically-sealed construction.
Concrete, the assembling mode of above-mentioned blood collecting pen and operating principle are: inner sleeve is inserted in overcoat from the front end of overcoat, formed be fastenedly connected with overcoat.Trip rod is inserted in inner sleeve inner chamber, trip rod slides as the linear slide of non-beat in inner sleeve inner chamber, when being therefore disc fit structure between inner sleeve inner chamber and trip rod, need at inner sleeve inner chamber and the guide protrusions muscle arranging gathering sill between trip rod and match with it or the wheel hub that leads.Above-mentioned drawing type moves back bar structure for pulling back trip rod, in the process that trip rod pulls back, enters bar stage clip and is gradually compressed, when being compressed to certain position, above-mentioned locking structure action, is locked in trip rod on a fixing position, now can unclamps drawing type and move back bar structure.Above-mentioned unlock button is for triggering locking structure, and when pressing unlock button, trip rod is released, and under the effect of entering bar stage clip, trip rod ejects forward.After the front end face of trip rod contacts with the rear end face of blood taking needle needle body, promote blood taking needle along written overcoat inner chamber forward slip, the syringe needle on needle body is stretched out from the front end needle outlet of written overcoat and thrusts skin, realize blood sampling.Move ahead in process at trip rod, when entering bar stage clip and returning to drift, under the effect of inertia force, trip rod continues to move ahead, and now moves back bar stage clip and is compressed; After trip rod touches blood taking needle needle body, back stitching stage clip is also gradually compressed, therefore, when syringe needle thrusts after patient refers to abdomen certain depth, under the effect of moving back bar stage clip, trip rod oppositely rebounds, simultaneously under the effect of back stitching stage clip, the syringe needle of blood taking needle departs from the finger abdomen of patient, retracts in written overcoat, thus completes whole blood collection procedure.
Above-mentioned chief editor's part with reference to chief editor's structure of existing blood collecting pen, can not repeat them here.
In technique scheme: chief editor's pen cap and written overcoat adopt detachable plug-in mounting connected mode, when blood collecting pen altofrequency uses, medical personnel will dismantle lower used disposable nib continually, the more disposable nib that plug-in mounting is new continually.Therefore, the position that chief editor is the most easily damaged is that the connection of chief editor's pen cap and written overcoat locks position.For reducing the use cost of blood collecting pen, avoid chief editor's premature failure, in the present invention, chief editor's pen cap adopts segmentation structure further, be specially: described inner sleeve is made up of first point of inner sleeve 1-2-1 and second point inner sleeve 1-2-2, described first point of inner sleeve coordinates with described overcoat plug-in mounting, and the front end of described first point of inner sleeve and the rear end of second point of inner sleeve are threaded connection, and front end and the written overcoat rear end of described second point of inner sleeve are that detachable plug-in mounting is connected.
In technique scheme: chief editor's pen cap and written overcoat adopt detachable plug-in mounting connected mode.Be connected firmly from both, and facilitate the angle of plug-in mounting to consider, in the present invention, chief editor's pen cap and written overcoat first-selection adopt following two kinds of structures:
1, see Fig. 6-9, put in described second point and be at least provided with an elastic pressuring plate 1-2-2-1 near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth 1-2-2-2.Put outside described nib and be provided with near the position of rear end the annular projection 2-1-3 matched with self-locking tooth, the two sides of described self-locking tooth are inclined-plane, and the end face of described annular projection and the medial surface of self-locking tooth are that inclined-plane coordinates.The lateral surface of self-locking tooth adopts ramp structure, medical personnel are when installing disposable nib, be applied to self-locking tooth and elastic pressuring plate one mutually in pushing force F1, because the rear end face of written overcoat contacts with the inclined-plane, outside of self-locking tooth, this pushing force F1 is broken down into a component F11 and along the inclined-plane component F12 perpendicular to inclined-plane, under the effect of component F12, elastic pressuring plate is pushed outside elasticity and opens, disposable nib can be fixed on chief editor by plug-in mounting smoothly, and now the medial surface of self-locking tooth is adjacent on the end face of annular projection.After disposable nib has been taken a blood sample, under needing dismounting during used disposable nib, medical personnel can hold chief editor, be applied to first outside tensile force f 2 of disposable pen simultaneously, because the medial surface of annular projection and self-locking tooth is contact of incline plane, above-mentioned tensile force f 2 is broken down into a component F21 and along the inclined-plane component F22 perpendicular to inclined-plane, under the effect of component F12, elastic pressuring plate is pushed outside elasticity and opens, and disposable nib can smoothly under chief editor's dismounting.
2, see Figure 10-13, put in described second point and be at least provided with an elastic pressuring plate 1-2-2-1 near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth 1-2-2-2, and the lateral surface of elastic pressuring plate is provided with manual unlocking tabletting 1-2-2-3.Put outside described nib and be provided with near the position of rear end the annular projection matched with self-locking tooth, the end face of described annular projection and the medial surface of self-locking tooth are that right-angle surface coordinates.The lateral surface of self-locking tooth can adopt right-angle surface or inclined-plane.When the lateral surface of self-locking tooth is for employing right-angle surface, when medical personnel load and unload disposable nib, all needs to pin manual unlocking tabletting, loading and unloading could be completed smoothly; When the lateral surface of self-locking tooth is inclined-plane, medical personnel are when installing disposable nib, and when not needing to pin manual unlocking tabletting, disposable nib can be fixed on chief editor by plug-in mounting smoothly, and concrete reason is see the analysis of the first structure above-mentioned.
In technique scheme: the retrogressing of trip rod moves back bar structure to realize by pulling back the drawing type be connected with trip rod rear end.When adopting this pusher structure, when medical personnel carry out practical operation, need both hands to coordinate, just can complete and move back bar action.Operate for ease of medical personnel, alleviate the workload of medical personnel, in the present invention, what chief editor was provided with one-handed performance further moves back bar structure, be specially: move back bar handle 1-9, the described bar handle that moves back is made up of handle body 1-9-1 and handle bar 1-9-2, and described handle body is located at pen cap outside, and described handle bar is connected through vertical with trip rod after jacket and inner sleeve.Described jacket and inner sleeve is provided with the elongated hole that can make to move back bar handle and vertically move along the pen cap.When medical personnel adopt this to move back bar structure, only need by the thumb press of a hands on handle body, other four fingers hold overcoat, then move thumb backward, just can pull back trip rod, realize retrogressing and the self-locking of trip rod.
In technique scheme: the position limiting structure being located at written overcoat rear end prevents blood taking needle from skidding off from its opening end., low cost of manufacture simple from structure and the angle of being convenient to assemble are considered, in the present invention, and the preferred following two schemes of described position limiting structure:
1, described position limiting structure is along written overcoat laterally towards the spacing preiection 2-1-4 that cavity direction in it extends, described spacing preiection and written overcoat integrated injection molding.Concrete, in the end face that spacing preiection can be located at opening end or outside end face.When in the end face that spacing preiection is located at opening end (see Figure 14-15), spacing preiection is connected with the inwall of written overcoat.As because of the existing process issues of manufacturing enterprise and Material selec-tion problem, written overcoat can not be caused to realize the smooth demoulding and blood taking needle to be inserted when having certain difficulty, fluting 2-1-5 can be set further in the both sides of spacing preiection, thus form the elastic pressuring plate structure connecting spacing preiection.When the end face that spacing preiection is located at opening end is outer (see Figure 16-17), spacing preiection is made up of the main part be connected with written overcoat and the bossing be located at inside body front end, need to set certain distance between the medial surface of bossing and the rear end face of written overcoat, to ensure enough elastic deformation amounts, be convenient to the loading of blood taking needle.Above-mentioned position limiting structure be realize the installation of blood taking needle by the outside elastic deformation of spacing preiection and elastic reset and rear end spacing.
2, see Figure 18-19, described position limiting structure is end cap 2-4, and described end cap plug-in mounting is fixed on written overcoat opening end, and described end cap is provided with the access opening 2-4-1 that trip rod can be made to pass.Concrete, end cap is made up of the rib part that can be pressed on written overcoat opening end end face and the main part be inserted in written overcoat, the outer surface of main part can arrange boss, the inwall of written overcoat arranges the groove matched, when boss is embedded in groove, end cap is fixed on outside nib and puts.When adopting this position limiting structure, the assembling sequence of whole disposable nib is: first put in written overcoat by back stitching stage clip, is then inserted by blood taking needle in written overcoat, finally by press-mounting of end cover on the rear end of written overcoat.
In technique scheme: described needle sterile hermetically-sealed construction can adopt different designs according to different use objects and occasion.In the present invention, needle sterile hermetically-sealed construction first-selection adopts following two kinds of concrete structures:
1, see Figure 20-21, described needle sterile hermetically-sealed construction is the two shell fragment Self-locking type sealed cap 2-5 be connected with syringe needle one, described pair of shell fragment Self-locking type sealed cap is integrated injection structure, and it is formed by with the main part 2-5-1 of needle contact, the hand holding handle part 2-5-2 passed from the needle outlet of written overcoat and the two shell fragment 2-5-3 be located at hand holding handle part two sides.The front end face of described written overcoat is provided with the groove matched with shell fragment, and the free end of two shell fragments inserts in groove and forms self-locking.This pair of shell fragment Self-locking type sealed cap and blood taking needle integrated injection molding.This needle sterile hermetically-sealed construction uses when being comparatively applicable to diabetes patient's self detecting blood sugar.
2, see Figure 22-23, described needle sterile hermetically-sealed construction is integral type spininess cap seal box 2-6, and sealing box is made up of box body 2-6-1, lid 2-6-2 and the multiple pin caps be distributed in box body; All can plug-in mounting disposable nib on each pin cap, each pin cap is formed by being sleeved on syringe needle collar portion 2-6-1-1 and can being sleeved on the outer outer tube sleeve part 2-6-1-2 put of nib.This integral type spininess cap seal box can seal branched disposable nib simultaneously, thus reduces manufacturing cost.This needle sterile hermetically-sealed construction is comparatively applicable to the blood sampling of hospital assay section and uses.Because hospital assay section will carry out the blood sampling work of many person-times every day, this integral type spininess cap seal box ensure that the convenience of blood sampling is with quick, and then shortens blood sampling time, alleviates the workload of medical personnel.When medical personnel take a blood sample, only need open the lid, chief editor and a disposable nib are aligned, downward insertion, can be packed on chief editor by disposable nib, carry then, disposable nib taken out from integral type spininess cap seal box, next step just can carry out follow-up blood sampling work.
When the front end face of above-mentioned written overcoat is blood sampling and patient refer to the direct contact site of abdomen, one, in order to increase written overcoat front end face and refer to the frictional force between abdomen, impact blood sampling effect or syringe needle scratch skin along referring to abdomen to slide to avoid blood collecting pen; Two, in order to alleviate or eliminate pain when patient takes a blood sample, thus, the front end face of written overcoat is at least provided with a micro-protrusions 2-7, to achieve the above object.
To sum up, this blood collecting pen, compared to prior art, has following technical characterstic:
1, adopt through repeatedly manufacturing experimently and the design optimized, really the use cost of single blood sampling is dropped to all acceptable minimum level of doctors and patients, the single blood sampling expense thoroughly solving disposable safe hemostix is too high, though existing common blood collecting pen single blood sampling network minimal but there is cross infection and disabled awkward predicament.
2, this blood collecting pen adopts three spring formula independent design, ensure that best blood sampling effect, achieves design effect that is painless or hypodynia blood sampling.
3, two kinds that design on chief editor respective independently trip rods move back bar structure.Both can realize bimanualness, a single-hand handling & independent operation can be realized again, on the basis that the different operating of satisfied different medical personnel is accustomed to, achieve the convenience of blood sampling operation.
4, because the blood sampling patient of laboratory test department every day of each hospital is numerous, cause the frequency of utilization of blood collecting pen very high, easily cause the connection insertion portion of chief editor and disposable written overcoat the most easily to occur loosening or damaging (general after 3000 times through testing), and then cause scrapping of chief editor.For avoiding the premature failure of chief editor, the inner sleeve of chief editor is arranged to segmental structure by spy, is made up of first point of inner sleeve and second point of inner sleeve.The rear end of second point of inner sleeve and first point of front end overlapped are threaded connection, and the front end of second point of inner sleeve adopts plug-in mounting to be connected with the rear end of written overcoat.Once loosening or damaging appears in the front end of second point of inner sleeve, again can change second point of inner sleeve for subsequent use and continue to use, ensure that the most long life of chief editor.
5, the insertion of chief editor and disposable nib fastening design, ensure that disposable nib and chief editor load and unload accurately with quick, both can realize both hands handling, more can realize one-handed performance, quick despatch nib, and speed is more convenient sooner.
6, two kinds of independently needle sterile hermetically-sealed constructions.It is easy to use when one can meet diabetic self detecting blood sugar; A kind ofly meet each hospital assay section because of the large workloads blood sampling of many person-times of every day, ensureing that the convenience of blood sampling is with under prerequisite efficiently, farthest shortens the actual needs of blood sampling time and designs.
7, on the outer face of disposable written overcoat needle outlet, be designed with the micro-protrusions through optimizing, when both can avoid taking a blood sample nib end face with refer to that take a blood sample effect or syringe needle of the slip and affecting of Pericarpium Arecae skin scratches skin, can utilize again neural absolute refractory period and relative refractory period characteristic, when ensureing further to eliminate blood sampling, pain is maybe dropped to hypodynia scope by the generation of pain.
8, because of the blood taking needle in disposable nib, can only expose instantaneously when taking a blood sample, this blood taking needle before blood sampling with blood sampling after, all ensure in the inner chamber of written overcoat, therefore thoroughly solve and stab or a blood contamination medical personnel's finger difficult problem, and avoid the Social duty of environmental pollution simultaneously.
9, because this disposable pen tip structure is simple, wherein written overcoat and blood taking needle can realize mould porous type injection mo(u)lding in enormous quantities completely, reduce its processing cost, and assemble simple and quick, can assembly cost be reduced again, eventually reduce the totle drilling cost that enterprise manufactures.
Claims (10)
1. the painless blood collecting pen of disposable written three spring portable, comprise chief editor and disposable nib, described chief editor comprises the pen cap be made up of jacket and inner sleeve, be slidably mounted on the trip rod in pen cap inner chamber, be arranged on entering bar stage clip and moving back bar stage clip on trip rod, be located at the locking structure between trip rod and inner sleeve, unlock button is on the coat installed, the drawing type be connected with trip rod rear end moves back bar structure, it is characterized in that: described disposable nib comprises written overcoat, the front end of nib overcoat is provided with needle outlet, nib overcoat rear end is opening end, in described written overcoat, the blood taking needle be made up of needle body and syringe needle is installed, under external force, described blood taking needle can slide along written overcoat linear interior, back stitching stage clip is installed between the front end of needle body and the front inner wall of written overcoat, the rear end of nib overcoat is provided with the position limiting structure preventing blood taking needle from skidding off, described written overcoat rear end and the front end of chief editor's pen cap are that detachable plug-in mounting is connected, described blood collecting pen also comprises needle sterile hermetically-sealed construction.
2. the painless blood collecting pen of disposable written three spring portable according to claim 1, it is characterized in that: described inner sleeve is made up of first point of inner sleeve and second point of inner sleeve, described first point of inner sleeve coordinates with described overcoat plug-in mounting, the front end of described first point of inner sleeve and the rear end of second point of inner sleeve are threaded connection, and the front end of described second point of inner sleeve is connected with the detachable plug-in mounting in written overcoat rear end.
3. the painless blood collecting pen of disposable written three spring portable according to claim 2, is characterized in that: put in described second point and be at least provided with an elastic pressuring plate near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth; Put outside described nib and be provided with near the position of rear end the annular projection matched with self-locking tooth, the two sides of described self-locking tooth are inclined-plane, and the end face of described annular projection and the medial surface of self-locking tooth are that inclined-plane coordinates.
4. the painless blood collecting pen of disposable written three spring portable according to claim 2, it is characterized in that: put in described second point and be at least provided with an elastic pressuring plate near the position of front end, the leading inside face of elastic pressuring plate is provided with self-locking tooth, and the lateral surface of elastic pressuring plate is provided with manual unlocking tabletting; Put outside described nib and be provided with near the position of rear end the annular projection matched with self-locking tooth, the end face of described annular projection and the medial surface of self-locking tooth are that right-angle surface coordinates.
5. the painless blood collecting pen of disposable written three spring portable according to claim 1, it is characterized in that: described chief editor is also provided with and moves back bar handle, the described bar handle that moves back is made up of handle body and handle bar, described handle body is located at pen cap outside, and described handle bar is connected through vertical with trip rod after jacket and inner sleeve; Described jacket and inner sleeve is provided with the elongated hole that can make to move back bar handle and vertically move along the pen cap.
6. the painless blood collecting pen of disposable written three spring portable according to claim 1, is characterized in that: described position limiting structure is laterally towards spacing preiection, described spacing preiection and written overcoat integrated injection molding that cavity direction in it extends along written overcoat.
7. the painless blood collecting pen of disposable written three spring portable according to claim 1, it is characterized in that: described position limiting structure is end cap, described end cap plug-in mounting is fixed on written overcoat opening end, and described end cap is provided with the access opening that trip rod can be made to pass.
8. the painless blood collecting pen of disposable written three spring portable according to claim 1, it is characterized in that: described needle sterile hermetically-sealed construction is the two shell fragment Self-locking type sealed caps be connected with syringe needle one, described pair of shell fragment Self-locking type sealed cap is integrated injection structure, and it is formed by with the main part of needle contact, the hand holding handle part passed from the needle outlet of written overcoat and two shell fragments be located at hand holding handle part two sides; The front end face of described written overcoat is provided with the groove matched with shell fragment, and the free end of two shell fragments inserts in groove and forms self-locking.
9. the painless blood collecting pen of disposable written three spring portable according to claim 1, is characterized in that: described needle sterile hermetically-sealed construction is integral type spininess cap seal box, and sealing box is made up of box body, lid and the multiple pin caps be distributed in box body; All can plug-in mounting disposable nib on each pin cap, each pin cap is formed by being sleeved on syringe needle collar portion and can being sleeved on the outer outer tube sleeve part put of nib.
10., according to the arbitrary described painless blood collecting pen of disposable written three spring portable of claim 1-9, it is characterized in that: the front end face of described written overcoat is at least provided with a micro-protrusions.
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| CN201210363962.4A CN102835961B (en) | 2012-09-27 | 2012-09-27 | Three-spring portable painless blood sampling pen with disposable pen point |
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| CN201210363962.4A CN102835961B (en) | 2012-09-27 | 2012-09-27 | Three-spring portable painless blood sampling pen with disposable pen point |
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| CN102835961B true CN102835961B (en) | 2015-01-14 |
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| CN108324290B (en) * | 2018-03-01 | 2023-11-21 | 皖南医学院 | Disposable touch-pressing type safe painless blood taking needle |
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| CN1586396A (en) * | 2004-09-15 | 2005-03-02 | 施迎敢 | Needle tip drawing back type disposable safety blood taking needle and disposable ejection type safety blood taking pen |
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Effective date of registration: 20190926 Address after: 101407 Beijing District of Huairou City Economic Development Zone Yanqi Yanqi Street No. 13 Patentee after: BEIJING RUICHENG MEDICAL SUPPLIES CO., LTD. Address before: 300122 Tianjin city Hongqiao District Lianyuan road Haiyuan apartment 3-1-101 Patentee before: Wang Zhen Min |