Finely tune injection penTechnical field
The present invention relates to technical field of medical instruments, more particularly to a kind of fine setting injection pen.
Background technology
Traditional drug injection is usually required health care professional and injected using disposable sterilized injector, and it is injectedThe problems such as process can produce glass chip and cause liquid waste unavoidably.
To solve the above problems, arisen at the historic moment it is a kind of can with the injection pen of self-injection, in implement injection, only need byMedicine bottle loads in injection pen, and self-injection can just be realized by connecting the syringe needle matched, and whole injection process will not produce glassChip, decoction is not shifted, and is not exposed in air, therefore can ensure the security of medication, improves the convenience of medication.
It can be applied to all kinds of first aids and chronic disease diabetes mellitus etc., help cardiovascular and cerebrovascular patient, hypoglycemia patient realExisting self-injection, first aid using medicine, hemostasis and pain-relieving, chemical and biological weapons when next applies also for acute poisoning or morbiditySave oneself.But existing injection pen is not easy to adjust dosage, and it is difficult to accurately control dosage in injection.
Therefore, how a kind of fine setting injection pen is provided, in order to dosage regulation and improve its medication accuracy of measurement, be thisArt personnel are badly in need of the technical problem solved.
The content of the invention
Injection pen is finely tuned it is an object of the invention to provide one kind, the problems such as dosage regulation is inaccurate can be effectively solved.
In order to solve the above technical problems, the invention provides following technical scheme：
One kind fine setting injection pen, including：
Differential screw transmission mechanism, it include be used for promote clamping type bottle cork push rod, with pushing away that the push rod is threadedly coupledAxially the position rotating ratchet of docking, one end and the position rotating ratchet can clutch connections for stem nut and the push rod nutAdjusting rod and control adjusting rod rotation ratchet cylinder, the ratchet jacket casing is located at outside the adjusting rod；
Dial dose mechanism, it includes knob, digital cylinder, adjustment barrel and ratchet clamping ring and regulation connecting cylinder, describedRatchet clamping ring is set in outside the adjusting rod, and the regulation connecting cylinder is set in the adjusting rod and the ratchet clamping ringAnd outside the ratchet cylinder, the incline direction of the ratchet at the ratchet clamping ring two ends is identical, the two of the ratchet clamping ringEnd is connected with the adjusting rod and ratchet cylinder respectively by ratchet, and the regulation connecting cylinder is threadedly attached in the tuneSave outside cylinder, the digital jacket casing is connected on outside the regulation connecting cylinder, and the top of the digital cylinder is connected in the knobPortion, the digital drum outer wall is provided with the graduation mark being distributed in the shape of a spiral；
Housing, the differential screw transmission is arranged in the housing, and the housing, which is provided with, to be used to show the numberThe pen core frame for being used for installing the clamped bottle is provided with the form of scale on cylinder, the housing；
Injection mechanism, it includes the button connector of the end thereof contacts of one end and ratchet cylinder, promotes the button to connectThe button of fitting axial movement, two ends push against respectively the button connector and the button by key spring, it is described in pressingAfter button, the button connector and the ratchet clamping ring are axially moved, and the digital cylinder is spinned axial movement.
Preferably, being provided with the housing is used to promote the push rod nut to move down and then drive the positioning rotationTurn the back-moving spring that ratchet and the adjusting rod are separated from each other, the bottom end of the back-moving spring is pushed against the push rod nutUpper end.
Preferably, positioning tooth is additionally provided with the housing, the positioning tooth is set in outside the adjusting rod, the regulationBar outer cover is provided with injection sound ratchet and injection bomb ricochet spring, and the injection sound ratchet passes through injection bomb ricochet spring and describedPositioning tooth is docked.
Preferably, push rod cup is provided between the push rod nut and the clamping type bottle cork.
Preferably, axially distributed groove is provided with outside the adjusting rod, the ratchet cylinder is internal to be provided with and the ditchThe sliding block that groove coordinates.
Preferably, the form is provided with window cover.
Compared with prior art, above-mentioned technical proposal has advantages below：
A kind of fine setting injection pen provided by the present invention, including：Differential screw transmission mechanism, it includes being used to promote cassetteThe push rod of bottle stopper, the position rotating ratchet axially docked with the push rod nut and push rod nut of push rod threaded connection, one end are with determiningPosition rotary ratchet can clutch connection adjusting rod and the ratchet cylinder of control adjusting rod rotation, ratchet jacket casing is located at outside adjusting rodPortion；Dial dose mechanism, it includes knob, digital cylinder, adjustment barrel and ratchet clamping ring and regulation connecting cylinder, ratchet clamping ringIt is set in outside adjusting rod, regulation connecting cylinder is set in adjusting rod and ratchet clamping ring and ratchet cylinder is outside, ratchet clamping ringThe incline direction of the ratchet at two ends is identical, and the two ends of ratchet clamping ring are connected with adjusting rod and ratchet cylinder respectively by ratchet, are adjustedSection connecting cylinder is threadedly attached in outside adjustment barrel, and digital jacket casing is connected on outside regulation connecting cylinder, the top clamping of digital cylinderInside knob, digital drum outer wall is provided with the graduation mark being distributed in the shape of a spiral；Housing, differential screw transmission is arranged in housing,Housing is provided with the pen core frame for being provided with the form for being used for showing the scale on digital cylinder, housing and being used for placing clamped bottle；InjectionMechanism, its button connector for including the end thereof contacts of one end and ratchet cylinder, the button for promoting the axial movement of button connector, twoWhat end pushed against button connector and button respectively presses key spring.
When clamped bottle is fitted into pen core frame, push rod nut stress upward sliding, while position rotating ratchet is also moved therewithDynamic, after clamped bottle assembling in place, the ratchet of position rotating ratchet and regulation boom end mutually coincide.Metering tune is carried out before injectionDuring section, by turn knob, to drive digital cylinder, adjustment barrel, ratchet clamping ring, ratchet cylinder and button connector and button sameWhen move up, wherein adjustment barrel does lead rotary motion, and adjustment barrel is ratchet assembling with ratchet clamping ring, simultaneously becauseBy the reaction force of key spring, therefore during regulation, the contact position of ratchet clamping ring and ratchet cylinder is in the presence of ratchet" click " sound occurs, adjusted dosage can be observed by form in regulation, if regulating dosage is excessive, can be revolved by turning roundButton carries out the readjustment of dosage, because the two ends of ratchet clamping ring are equipped with ratchet, therefore in readjustment, ratchet clamping ring and tune" click " sound can also occurs in the contact position of section cylinder in the presence of ratchet, by sound, can be to user with sound prompting, thisThe visual cues of outer combination form, are conducive to the regulation of dosage.
After regulation to required dosage, you can injected, pressing keys, button connector is done along its axis directionLinear motion, the fortune while drive ratchet cylinder, ratchet clamping ring, adjustment barrel and digital cylinder, adjusting rod, position rotating ratchet are spinnedIt is dynamic, push rod rotation is then driven, in the presence of push rod nut, push rod axially moves, and then promote clamping type bottle cork, you can realNow inject purpose.The fine setting injection pen may be reused, it is to avoid the disposable injection pen consumptive material of tradition reduces medical waste.In additionRelative to traditional direct-push injection pen, by the way that screw is converted into linear motion, injection precision can be effectively improved.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of technical scheme of the invention or of the prior artThe accompanying drawing used required in description is briefly described, it should be apparent that, drawings in the following description are some of the present inventionEmbodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to theseFigure obtains other accompanying drawings.
A kind of cross section structure diagram for fine setting injection pen that Fig. 1 is provided by a kind of embodiment of the invention；
A kind of configuration schematic diagram for fine setting injection pen that Fig. 2 is provided by a kind of embodiment of the invention；
A kind of broken section structural representation for fine setting injection pen that Fig. 3 is provided by a kind of embodiment of the inventionFigure.
Reference is as follows：
1 is button, and 2 be knob, and 3 be housing, and 4 be form, and 5 be window cover, and 6 be regulation connecting cylinder, and 7 be adjustment barrel, and 8 areRatchet cylinder, 9 be ratchet clamping ring, and 10 be injection sound ratchet, and 11 be back-moving spring, and 12 be pen core frame connecting cylinder, and 13 be the cap for brush,14 be that, by key spring, 15 be digital cylinder, and 16 be button connector, and 17 be adjusting rod, and 18 be push rod, and 19 be injection bomb ricochet spring,20 be positioning tooth, and 21 be position rotating ratchet, and 22 be push rod nut, and 23 be push rod cup, and 24 be pen core frame.
Embodiment
Just as described in the background section, current injection pen is not easy to the regulation of dosage in injection.
On the basis of the studies above, injection pen is finely tuned the embodiments of the invention provide one kind, is measured before injectionDuring regulation, by turn knob, to drive digital cylinder, adjustment barrel, ratchet clamping ring, ratchet cylinder and button connector and buttonMove up simultaneously, wherein adjustment barrel does lead rotary motion, adjustment barrel is ratchet assembling with ratchet clamping ring, while byIn the reaction force by key spring, therefore during regulation, ratchet clamping ring and ratchet cylinder contact position ratchet effectUnder " click " sound occurs, adjusted dosage can be observed by form in regulation, if regulating dosage is excessive, revolution can be passed throughKnob carries out the readjustment of dosage, because the two ends of ratchet clamping ring are equipped with ratchet, therefore in readjustment, ratchet clamping ring and" click " sound can also occurs in the contact position of adjustment barrel in the presence of ratchet, by sound, can give user with sound prompting,In addition the visual cues of form are combined, are conducive to the regulation of dosage.In addition the fine setting injection pen may be reused, it is to avoid traditionDisposable injection pen consumptive material reduces medical waste.Relative to traditional direct-push injection pen, by the way that screw is converted into directlyLine is moved, and can effectively improve injection precision.
In order that the above objects, features and advantages of the present invention can become apparent it is understandable, below in conjunction with the accompanying drawings to this hairBright embodiment is described in detail.
Detail is elaborated in the following description to fully understand the present invention.But the present invention can with it is a variety of notIt is same as other manner described here to implement, those skilled in the art can do class in the case of without prejudice to intension of the present inventionLike popularization.Therefore the present invention is not limited by following public embodiment.
It refer to Fig. 1-Fig. 3, a kind of section view for fine setting injection pen that Fig. 1 is provided by a kind of embodiment of the inventionStructural representation；A kind of configuration schematic diagram for fine setting injection pen that Fig. 2 is provided by a kind of embodiment of the invention；A kind of broken section structural representation for fine setting injection pen that Fig. 3 is provided by a kind of embodiment of the invention.
A kind of embodiment of the present invention provides a kind of fine setting injection pen, including：Differential screw transmission mechanism, itsIt is axially right including the push rod nut 22 for promoting the push rod 18 of clamping type bottle cork, being threadedly coupled with push rod 18 and push rod nut 22Position rotating ratchet 21, one end and the position rotating ratchet 21 connect can clutch connection adjusting rod 17 and control adjusting rod 17The ratchet cylinder 8 of rotation, ratchet cylinder 8 is set in outside adjusting rod 17；Dial dose mechanism, it includes knob 2, digital cylinder 15, adjustedCylinder 7 and ratchet clamping ring 9 and regulation connecting cylinder 6 are saved, ratchet clamping ring 9 is set in outside adjusting rod 17, adjusts 6 sets of connecting cylinderIt is located at outside adjusting rod 17 and ratchet clamping ring 9 and ratchet cylinder 8, the incline direction of the ratchet at the two ends of ratchet clamping ring 9 is identical,The two ends of ratchet clamping ring 9 are connected with adjusting rod 17 and ratchet cylinder 8 respectively by ratchet, and regulation connecting cylinder 6 is connected through a screw threadOutside adjustment barrel 7, digital cylinder 15 is socketed in outside regulation connecting cylinder 6, and the threads of digital cylinder 15 are connected in knob 2Portion, the tail end of digital cylinder 15 is socketed in outside adjustment barrel 7, and the digital outer wall of cylinder 15 is provided with the graduation mark being distributed in the shape of a spiral；Housing3, differential screw transmission is arranged in housing 3, and housing 3 is provided with the form 4 for being used for showing the scale on digital cylinder 15, housing 3It is interior to be provided with the pen core frame 24 for being used for placing clamped bottle；Injection mechanism, its button for including the end thereof contacts of one end and ratchet cylinder 8 connectsFitting 16, the button 1 for promoting the axial movement of button connector 16, two ends push against the button of button connector 16 and button 1 respectivelySpring 14.
During the fine setting injection pen provided using the present embodiment, when clamped bottle is fitted into pen core frame 24, push rod nut 22 byPower upward sliding, while position rotating ratchet 21 is also moved, after clamped bottle assembling in place, position rotating ratchet 21 is with adjustingThe ratchet of the end of pole 17 mutually coincide.Wherein pen core frame 24 can be connected on housing 3 by the connecting cylinder 12 of pen core frame 24, pen coreFrame 24 is outer to be also arranged with the cap for brush 13.
When metering regulation is carried out before injection, by turn knob 2, to drive digital cylinder 15, adjustment barrel 7, ratchet clamping ring9th, ratchet cylinder 8 and button connector 16 and button 1 are moved up simultaneously, and wherein adjustment barrel 7 does lead rotary motion, adjustsSection cylinder 7 is ratchet assembling with ratchet clamping ring 9, simultaneously because by the reaction force of key spring 14, therefore during regulation, spine" click " sound occurs in the contact position of tooth clamping ring 9 and ratchet cylinder 8 in the presence of ratchet, can be seen in regulation by form 4Adjusted dosage is examined, if regulating dosage is excessive, the readjustment of dosage can be carried out by turning round knob 2, due to ratchet clamping ring 9Two ends be equipped with ratchet, therefore in readjustment, the contact position of ratchet clamping ring 9 and adjustment barrel 7 can in the presence of ratchet" click " sound occurs, by sound, in addition with reference to the visual cues of form 4, agent can be conducive to user with sound promptingThe regulation of amount.
In regulation to after required dosage, you can injected, pressing keys 1, button connector 16 is along its axis sideTo moving along a straight line, while driving ratchet cylinder 8, ratchet clamping ring 9, adjustment barrel 7 and digital cylinder 15, adjusting rod 17, position rotatingRatchet 21 is spinned motion, then drives push rod 18 to rotate, in the presence of push rod nut 22, push rod 18 axially moves, and entersAnd promote clamping type bottle cork, you can realize injection purpose.
In addition the fine setting injection pen that above-described embodiment is provided, may be reused, it is to avoid the disposable injection pen consumptive material of traditionReduce medical waste.It will also be appreciated that relative to traditional direct-push injection pen, by the way that screw is converted into straight lineMotion, can effectively improve injection precision.
Further, being provided with housing 3 is used to promote push rod nut 22 to move down and then drive position rotating ratchet 21The back-moving spring 11 being separated from each other with adjusting rod 17, the bottom end of back-moving spring 11 is pushed against the upper end of push rod nut 22.
When installing clamped bottle, back-moving spring 11 is shunk under the extruding of push rod nut 22；Take out clamped bottle itAfterwards, push rod nut 22 can promote push rod nut 22 to move down in the presence of back-moving spring 11, due to push rod nut 22 and calmlyPosition rotary ratchet 21 is connected with each other, therefore may be such that position rotating ratchet 21 and adjusting rod 17 are separated from each other.
Further, positioning tooth 20 is additionally provided with housing 3, positioning tooth 20 is set in outside adjusting rod 17, adjusting rod 17Outer cover is provided with injection sound ratchet 10 and injection bomb ricochet spring 19, and injection sound ratchet 10 is by injection bomb ricochet spring 19 and determinesPosition tooth 20 is docked.
During clamped bottle is assembled, adjusting rod 17 and injection sound ratchet 10 move along a straight line, in injection bomb ricochetUnder the extruding of spring 19, injection sound ratchet 10 and positioning tooth 20 are docked.
In injection process, because positioning tooth 20 is fixed, by injecting the rotation of sound ratchet 10, it can produce " click "Sound, in order to which the injection to user acoustically is reminded.
In order to optimize the using effect for the push rod 18 that above-described embodiment is provided, it is provided between push rod nut 22 and clamping type bottle corkPush rod cup 23.One chamber can be wherein set on push rod cup 23, and the end of push rod 18 is provided with fixture block, and fixture block card is in the chamber so thatWhen push rod 18 is rotated, push rod cup 23 will not be driven to rotate, be only that push rod cup 23 produces axial movement.
Further, axially distributed groove is provided with outside adjusting rod 17, the inside of ratchet cylinder 8 is provided with what is coordinated with grooveSliding block.It is easy to the movement of ratchet cylinder 8 by groove, also allows for ratchet cylinder 8 and drive adjusting rod 17 to rotate.Wherein can be in adjusting rod 17Two symmetrically arranged grooves of upper setting, inject the sliding block that the inner ring of sound ratchet 10 also is provided with being mutually adapted with groove in addition, withIt is easy to adjusting rod 17 and injection sound ratchet 10 to synchronize rotation.
Further, form 4 is provided with window cover 5.By window cover 5 can logarithmic code cylinder 15 on scale protectedShield, to improve its service life, wherein it is preferred that window cover 5 is transparent window cover 5.
It should also be noted that, herein, term " comprising ", "comprising" or its any other variant are intended to non-It is exclusive to include, so that process, method, article or equipment including a series of key elements not only include those key elements,But also other key elements including being not expressly set out, or also include solid by this process, method, article or equipmentSome key elements.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that includingAlso there is other identical element in process, method, article or the equipment of the key element.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and otherBetween the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined hereinGeneral Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the inventionThe embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase oneThe most wide scope caused.