CN101829381B - Disposable insulin injection pen with adjustable dosage - Google Patents
Disposable insulin injection pen with adjustable dosage Download PDFInfo
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- CN101829381B CN101829381B CN201010146368.0A CN201010146368A CN101829381B CN 101829381 B CN101829381 B CN 101829381B CN 201010146368 A CN201010146368 A CN 201010146368A CN 101829381 B CN101829381 B CN 101829381B
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- 239000007924 injection Substances 0.000 title claims abstract description 87
- 238000002347 injection Methods 0.000 title claims abstract description 87
- NOESYZHRGYRDHS-UHFFFAOYSA-N insulin Chemical compound N1C(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(NC(=O)CN)C(C)CC)CSSCC(C(NC(CO)C(=O)NC(CC(C)C)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CCC(N)=O)C(=O)NC(CC(C)C)C(=O)NC(CCC(O)=O)C(=O)NC(CC(N)=O)C(=O)NC(CC=2C=CC(O)=CC=2)C(=O)NC(CSSCC(NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2C=CC(O)=CC=2)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)C(CCC(O)=O)NC(=O)C(C(C)C)NC(=O)C(CC(C)C)NC(=O)C(CC=2NC=NC=2)NC(=O)C(CO)NC(=O)CNC2=O)C(=O)NCC(=O)NC(CCC(O)=O)C(=O)NC(CCCNC(N)=N)C(=O)NCC(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC=CC=3)C(=O)NC(CC=3C=CC(O)=CC=3)C(=O)NC(C(C)O)C(=O)N3C(CCC3)C(=O)NC(CCCCN)C(=O)NC(C)C(O)=O)C(=O)NC(CC(N)=O)C(O)=O)=O)NC(=O)C(C(C)CC)NC(=O)C(CO)NC(=O)C(C(C)O)NC(=O)C1CSSCC2NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C(CCC(N)=O)NC(=O)C(CC(N)=O)NC(=O)C(NC(=O)C(N)CC=1C=CC=CC=1)C(C)C)CC1=CN=CN1 NOESYZHRGYRDHS-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 102000004877 Insulin Human genes 0.000 title claims abstract description 25
- 108090001061 Insulin Proteins 0.000 title claims abstract description 25
- 229940125396 insulin Drugs 0.000 title claims abstract description 25
- 239000003814 drug Substances 0.000 claims abstract description 7
- 210000003205 muscle Anatomy 0.000 claims description 27
- 241001247821 Ziziphus Species 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 12
- 238000005859 coupling reaction Methods 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 11
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 229940079593 drug Drugs 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 210000003781 tooth socket Anatomy 0.000 abstract 1
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- 230000008901 benefit Effects 0.000 description 2
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- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 206010012601 diabetes mellitus Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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- 230000002829 reductive effect Effects 0.000 description 1
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- 239000000243 solution Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a disposable insulin injection pen with adjustable dosage and convenient use and carrying, which comprises a pen cap, a needle head, an injection pipe internally provided with a piston and filled with drugs in advance, an injection sleeve, a positioning block, a screw, a nut pipe, a fixing pipe, a coil pipe, a clutch pipe, a scale positioning device and a button, wherein 0-60 scales which can be observed by a window of the fixing pipe are marked on the coil pipe, a clutch is formed by a face tooth of the clutch pipe and a tooth socket of the coil pipe so as to ensure the dosage is repeatedly adjusted to the accurate position before use, the clutch is switched on by pressing the button, the coil pipe drives the clutch pipe and the nut pipe to rotate by the interaction of a spiral bar of the fixing pipe and a spiral groove of the coil pipe, and thereby ensuring that the screw is pushed forwards to extrude the drugs in the injection pipe out. The screw can not be pushed backwards after use, which avoids repeated use. The invention integrates insulin with the injection pen, and can be discarded after use because a patient can not replace the injection pipe.
Description
Technical field
The present invention relates to a kind of insulin injection pen, particularly relate to a kind of Disposable insulin injection pen with adjustable dosage.
Background technology
Diabetes patient or other need the patient of self-medication often to need to carry out liquid medicine injection in different occasion to oneself, common patient is both inconvenient and can not effectively reach accurate medication in the process using old-fashioned disposable syringe.
In Chinese patent CN201055550Y disclosed in 7 days Mays in 2008, disclose one " exempt from pain formula insulin injection pen ", mainly contain and launch box, needle set presss from both sides, clutch key, ejection-spring, entry needle, pin lid and touch metering device composition, launching box is cuboid or cylinder, box is equipped with and touches metering device and clutch key, the needle set of the slip that the reed on clutch key is in-built with launching box presss from both sides latch recess and matches, needle set folder is connected by ejection-spring and launching between box, needle set folder is for inserting fixing entry needle, during injection, entry needle is sprung into subcutaneous by ejection-spring, touch metering device to be made up of touch probe, dosage card, the edge of a knife matched doses card that touch probe protrudes, probe and the interconnected one of piston rod.
Disclose one " insulin syringe " in the Chinese patent CN100453128C that on January 21st, 2009 authorizes, it can be the forward gear that rotating shaft is only used as piston, to remove applying normal load on the rotary shaft, thus enhances durability, this auto injector for insulin comprises a syringe, it has the injector of a splendid attire insulin therein, injector rear end is inserted into one, the piston of the blowdown presssure of insulin is provided for injector, one has the housing that the syringe being formed at appropriate location receives space, syringe receives space and has the partition wall being formed at its rear end, a rotating shaft with noncircular cross section and predetermined length, for rotating the supply unit of rotating shaft at a predetermined velocity, one provides the push pedal assembly of onward impulse by promoting piston for piston, push pedal assembly has one and forms externally threaded integrated disc portions at its external peripheral surface, heart part and the axial conjugate foramen combined of rotating shaft wherein, rotating shaft is through conjugate foramen, rotating shaft can seesaw through conjugate foramen, with the cylindrical push pedal housing of a hollow, the syringe that it is inserted into syringe rear end receives in space, and piston is extended there through, and push pedal housing forms internal thread at inner circumferential surface, it engages with the external screw thread of disc portion, seesaws with making disk portions thread helix.
Above-mentioned two kinds of patent formula about syringe otherwise exist volume large, be not easy to carry, or there is inconvenient problem with use.
Summary of the invention
The object of the invention is in order to solve the volume that exists in existing insulin syringe large, be not easy to carry or inconvenient problem with use, and provide a kind of easy to use, portable Disposable insulin injection pen with adjustable dosage.
The object of the present invention is achieved like this: Disposable insulin injection pen with adjustable dosage, comprise the cap for brush, syringe needle, built-in piston pre-installed the injection pipe of medicament, injection sleeve pipe, positioning wedged block, screw rod, nut pipe, stationary pipes, coil, clutch pipe, scale locator and button, the insulin injection wherein in injection pipe is injected by pharmaceutical factory and uses piston seal, screw rod both sides vertically respectively cut-out screw thread form two tangent planes be parallel to each other, screw front end is pressure head, screw rod is coupled with the internal thread of nut pipe through after the pilot hole of positioning wedged block central authorities, the inwall of described pilot hole have pair of sidewalls to match with two tangent planes of screw rod respectively making slides axially between pilot hole with screw rod coordinates and can not relatively rotate, it is leading portion and back segment that stationary pipes inwall is provided with annular block reinforcement by stationary pipes internal wall separates, described back segment inwall is provided with spiral bar, the pipe shaft external diameter of nut pipe and the internal diameter of described annular block reinforcement slide and to match and this pipe shaft extends to the back segment of described stationary pipes, the front end of nut pipe is positioned at the leading portion of stationary pipes and arranges a pair symmetrical and radially elasticity sour jujube head of bending and stretching of elasticity, stationary pipes leading portion arranges the some ratchets along stationary pipes leading portion inwall annular spread near described annular block reinforcement place, described ratchet and described elasticity sour jujube head match and make nut pipe screw rod can only be driven to move forward along single direction rotation, namely nut pipe can only rotate relative to stationary pipes forward (unidirectional) and can not reversely rotate---be equivalent to the principle of thorn wheel and ratchet, this elasticity sour jujube head is between described positioning wedged block and the annular block reinforcement of described stationary pipes, the injection pipe box of built-in piston is in described injection sleeve pipe, injection sleeve pipe front end and syringe needle screw thread match, the tail end inwall of injection sleeve pipe has symmetrical button hole, positioning wedged block is provided with two elastic buckles pin buckled into respectively in described button hole and makes to interfix between positioning wedged block and injection sleeve pipe, to interfix between stationary pipes and positioning wedged block in the groove that the elasticity card base that positioning wedged block stretches out forward two tiles outwards snaps in described stationary pipes leading portion inwall respectively, thus make injection sleeve pipe, positioning wedged block, screw rod can not rotate relative to stationary pipes, the spiral bar that coil outer wall has helicla flute and described stationary pipes back segment inwall matches, nut pipe is stated in the clutch pipe box residence being positioned at coil, and coil inwall front end is provided with boss stretches in the direction recess that described nut tube outer surface extends vertically, on front side of the annular convex ring of clutch pipe distal outer surface, some end-tooths stretched out forward are set, be provided with the teeth groove matched with each end-tooth in swivelling pipe, between described clutch pipe and coil, be provided with brake spring, make scale locator and clutch pipe can synchronous rotary in the location coupling slot that location that scale locator front end face stretches out coupling muscle inserts clutch pipe inner wall at end, the outer wall of scale locator is provided with annular stop muscle, coil afterbody inwall is provided with annular convex rib, the internal diameter of this annular convex rib is less than the external diameter of described annular stop muscle, scale locator is provided with radially-protruding elastic arm dop, coil to should elastic arm dop position annularly inwall some axial scale locating slots are set, when coil rotates relative to scale locator, described elastic arm dop is stuck in different scale locating slots in order, scale locator tail end face is provided with the counterbore of inner wall belt draw-in groove, the mandrel outer surface that button front end is stretched out is provided with the annular chuck matched with the draw-in groove of described counterbore, stationary pipes have form can observe be engraved in coil outer surface and along helicla flute trend scale,
Described screw flight is dextrorotation, and the helicla flute of described coil outer surface is left-handed;
First extracted by the cap for brush be enclosed within outside injection sleeve pipe during use, now, under the effect of brake spring, the end-tooth of clutch pipe is separated with the teeth groove in coil, and the clutch that clutch pipe and coil are formed is in released state, rotate forward the rotary handle of the coil stretching out stationary pipes afterbody, the elasticity sour jujube head of nut pipe front end and the ratchet reverse coupled of stationary pipes and the scale locating slot in coil is slided relative to the elastic arm dop of scale locator, elastic arm dop often slips over a scale locating slot coil and just drives clutch pipe outwards to move a measurement unit vertically, the scale on coil surface is observed until the rotary handle that stops operating after required injection volume by the form of stationary pipes, complete metering to regulate, if coil rotates forward excessive, then can rotate coil in the other direction to suitable dose, when rotating coil in the other direction, because the frictional force that the elasticity sour jujube head of nut pipe front end is coupled with the ratchet forward of stationary pipes is greater than the frictional force between the elastic arm dop of scale locating slot and scale locator, and have certain pressure in injection pipe, so screw rod can not be driven to rotate, and scale locating slot can only be made to slide relative to the elastic arm dop of scale locator, so repeatedly injection volume can be regulated before injection, injection volume regulates accurately, hand button end face, the pressure overcoming brake spring makes the end-tooth on clutch pipe engage with the teeth groove of coil, and coil reversely rotates and drives clutch pipe, nut pipe rotate and make the piston in screw rod driven forward extruding injection pipe that injection is injected in human body from syringe needle.
The groove of described stationary pipes leading portion is the annular groove around stationary pipes inwall, the outer wall of described positioning wedged block is provided with axial location groove and the axial location muscle at stationary pipes corresponding inwall place match the circumferencial direction between positioning wedged block and stationary pipes located--namely can not relatively rotate between stationary pipes and positioning wedged block, and two the elasticity card bases snapping in the locating piece in described annular groove are by locating piece and stationary pipes axial location.Its benefit is convenient to install.
The card base of two tiles is provided with in described injection sleeve pipe afterbody, and described two card bases lay respectively between two elasticity card bases that described positioning wedged block stretches out forward, and make the elasticity card base of the card base of two tiles and two tiles roughly can surround annular.
The end-tooth stretched out forward on front side of the annular convex ring of described clutch pipe distal outer surface is sawtooth.
The mandrel front end of described button is tip, and this tip props up the bottom of the counterbore of described scale locator.Its benefit is the frictional force reduced when pressing button between button and scale locator, makes button and finger geo-stationary in the process of hand button and can not rotate with scale locator.
Described injection sleeve pipe afterbody is provided with annular snap muscle and snaps in the annular slot of stationary pipes leading portion inwall.
Owing to have employed technical solutions according to the invention, during patient injection insulin, without the need to installing injection, directly the cap for brush being taken off, regulating injection volume to use, use pole convenient; And forward and reversely repeatedly can regulate rotary handle in use procedure, scale locator makes adjustment process accurate with coordinating of scale locating slot; Finish using the cap for brush on back cover, the overall appearance of the form of a stroke or a combination of strokes is not only easy to carry but also helps protection privacy of the individual.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the three-dimensional exploded view of the present invention's specific embodiment.
Fig. 2 is the stereo amplification figure of another angle of positioning wedged block in Fig. 1.
Fig. 3 is the stereo amplification figure of another angle of injection sleeve pipe in Fig. 1.
Fig. 4 is the stereogram of the positioning wedged block of Fig. 2 when installing on injection sleeve pipe in figure 3.
Fig. 5 is the stereo amplification figure of another angle of scale locator of Fig. 1.
Fig. 6 is the stereogram of another angle of Fig. 5.
Fig. 7 is the stereo amplification figure of another angle of screw rod of Fig. 1.
Fig. 8 is the stereo amplification figure of another angle of nut pipe in Fig. 1.
Fig. 9 is the stereo amplification figure of another angle of clutch pipe in Fig. 1.
Figure 10 is the stereo amplification figure of another angle after the clutch pipe excision half of Fig. 9.
Figure 11 is the stereo amplification figure of another angle after excision half when being arranged in stationary pipes of the nut pipe in Fig. 1.
Figure 12 is the stereogram of the cap for brush that Fig. 1 embodiment uses.
Figure 13 is the stereo amplification figure of another angle after stationary pipes excision half in Fig. 1.
Figure 14 is the stereo amplification figure of another angle after coil excision half in Fig. 1.
Figure 15 is zoomed-in view vertically when scale locator is arranged on coil afterbody in Fig. 1.
Figure 16 is that in Fig. 1, each part is installed together the rear profile (not beating hatching in figure) along axis excision.
Figure 17 is the profile (in figure end beat hatching) of Figure 16 along H-H line.
Figure 18 is that in Figure 16, part A adds the partial enlarged drawing after hatching.
Figure 19 is that in Figure 17, part B adds the partial enlarged drawing after hatching.
Figure 20 is that in Figure 17, C part adds the partial enlarged drawing after hatching.
Figure 21 is that in Figure 17, D part adds the partial enlarged drawing after hatching.
In figure 101, syringe needle, 1, injection sleeve pipe, 113, annular snap muscle, 11, 12, card base, 111, 121, button hole, 2, positioning wedged block, 21, 22, elasticity card base, 23, axial location groove, 102, injection pipe, 103, piston, 33, pressure head, 32, screw thread, 3, screw rod, 31, tangent plane, 41, direction recess, 4, nut pipe, 5, stationary pipes, 51, form, 61, helicla flute, 6, coil, 62, rotary handle, 10, brake spring, 7, clutch pipe, 71, fall level, 72, end-tooth, 8, scale locator, 81, location coupling muscle, 9, button, 91, annular chuck, 92, tip, 93, end face, 24, elastic buckles pin, 25, pilot hole, 26, axial notch, 82, elastic arm dop, 83, annular stop muscle, 80, counterbore, 42,43, elasticity sour jujube head, 44, internal thread, 73, boss, 52, ratchet, 53, spiral bar, 54, groove, 55, axial location muscle, 74, location coupling slot, 56, annular slot, 57, annular block reinforcement, 63, annular muscle, 64, teeth groove, 65, scale locating slot, 66, annular convex rib, 410, the end, 89, draw-in groove.
Detailed description of the invention:
As shown in Figure 1, described Disposable insulin injection pen with adjustable dosage, comprise the cap for brush (Figure 12), syringe needle 101, the injection pipe 102 of built-in piston 103, injection sleeve pipe 1, positioning wedged block 2, screw rod 3, nut pipe 4, stationary pipes 5, coil 6, clutch pipe 7, scale locator 8 and button 9, and brake spring 10, wherein pharmaceutical factory seals afterbody with piston 103 after insulin injection is injected injection pipe 102.
The stereo amplification figure of another angle of screw rod as shown in Figure 7, the overall appearance of screw rod is "T"-shaped, and front end is pressure head 33, and the screw rod both sides screw surface that cut-out screw thread forms between two tangent planes be parallel to each other 31, two tangent plane 31 respectively is vertically screw thread 32.
Positioning wedged block central authorities have pilot hole 25 as shown in Figure 2, and the screw rod in the size of this pilot hole 25 and Fig. 7 matches, and when both install, screw rod below of positioning wedged block in Fig. 2 penetrates pilot hole 25.In Fig. 2, the outer wall of positioning wedged block is provided with axial location groove 23, the elasticity card base 21 and 22 of two tiles stretched out forward, two elastic buckles pin 24 (only observing in figure), injection sleeve pipe shown in composition graphs 3, injection sleeve pipe afterbody stretches out two tiles and is respectively equipped with the card base 11 and 12 of button hole 111 and 121, two elastic buckles pin 24 in Fig. 2 to buckle in Fig. 3 in two button holes 111 and 121 respectively, the elasticity card base 21 of two tiles, 22 and the card base 11 of two tiles, 12 roughly surround annular (its outer wall is roughly the face of cylinder), its outward appearance as shown in Figure 4, axial location muscle 55 wherein in axial location groove 23 Figure 13 matches, axial location groove 23 wherein on positioning wedged block outer wall also can replace with the axial notch 26 at elastic buckles pin 24 rear, and the axial location muscle size now in Figure 13 should be suitable with axial notch 26.
See that the scale locator shown in Fig. 5 and Fig. 6 is provided with the counterbore 80 of location coupling muscle 81, annular stop muscle 83, four elastic arm dops 82 and rear end, be provided with the draw-in groove (draw-in groove 89 see in Figure 21) of annular in counterbore 80, some location coupling muscle 81 that its front end face stretches out match with the location coupling slot 74 at clutch pipe rear portion in Figure 10; Four elastic arm dops 82 support the use with the scale locating slot 65 in the coil in Figure 14, when scale locator is static, coil rotates, each elastic arm dop is respectively rolling in adjacent scale locating slot, make the rotation of coil become segmentation (level) rotate, also with regard to time the present invention rotate coil realize metering regulate time be that segmentation (level) regulates--relative to continuous stepless regulate with regard to; See Figure 15, roughly clearly can observe the interaction situation between the scale locating slot 65 in coil and the elastic arm dop 82 on scale locator.
Stationary pipes as shown in Figure 13, stationary pipes inwall is provided with annular block reinforcement 57, its posterior segment inwall is provided with spiral bar 53, is provided with the some ratchets 52 along the distribution of tube wall even circumferential on front side of annular block reinforcement 57, and stationary pipes surface has form 51 for observing the scale being positioned at stationary pipes inward turning tube-surface.
Nut pipe as shown in Figure 8, its front end is provided with two elasticity sour jujubes 43 and matches with the ratchet 52 on nut pipe in Figure 13, both relations are as shown in figure 11: the relation of ratchet 52 and elasticity sour jujube 42 is equivalent to ratchet mechanism, make nut pipe can only relative to stationary pipes along single direction rotation.Also see from Figure 11, stationary pipes inwall is also provided with the groove 54 of annular.
Clutch pipe as shown in Figure 9, its afterbody is provided with the bulge loop falling level 71 and band end-tooth 72, and the inwall of clutch pipe is provided with boss 73; The nut pipe tail end to Fig. 8 is rectified before the clutch pipe of Fig. 9, and boss is roughly just being pressed into by force to direction recess boss 73 namely can be made to fall into direction recess 41, except having guiding and making both except the effect that circumferencial direction is synchronous between boss with direction recess, clutch pipe can also be prevented to be separated with nut pipe vertically.
The afterbody of clutch pipe is also provided with location coupling slot 74 muscle 81 that is coupled with the location in Fig. 5 and matches as shown in Figure 9, makes clutch pipe and scale locator can synchronous rotary.
Coil as shown in Figure 14 is also provided with annular muscle 63 and teeth groove 64 in it, what brake spring was arranged on clutch pipe in this annular muscle 63 and Fig. 9 falls (see Figure 16 or 17 Suo Shi) between level 71, teeth groove 64 matches with the end-tooth 72 on Fig. 9, and in fact end-tooth 72 is sawtooth.
Return Fig. 1, when described Disposable insulin injection pen with adjustable dosage is installed, first injection pipe 102 (medicament and piston have been pre-installed in pharmaceutical factory) is put into injection sleeve pipe along the afterbody of injection sleeve pipe 11, by screw rod 3 right-hand member through positioning wedged block 2 central authorities pilot hole after with nut pipe 4 screw thread couple to root, and then two of positioning wedged block elasticity card bases 21 and 22 are just pressed between two card bases 11 and 12 of injection sleeve pipe respectively, on positioning wedged block two button pin are made to fasten two button holes 111 and 112 (injection sleeve pipe and positioning wedged block are linked together as shown in Figure 4) of injection sleeve pipe respectively, again stationary pipes 5 left end is inserted in the press-in of injection sleeve pipe 1 right-hand member, both axial restraints are made in the annular slot 56 (annular slot 56 see Figure 13) making the annular snap muscle 113 on injection sleeve pipe be pressed into stationary pipes 5 by force, simultaneously two card bases 111 and 121 of injection sleeve pipe outwards stretch into (as Figure 18) in the groove 54 of Figure 13 annular and make both vertically fixing more firm further, and the axial location groove 23 of positioning wedged block slips into the axial location muscle 55 shown in Figure 13 makes injection sleeve pipe, positioning wedged block is fixed at circumferencial direction relative to stationary pipes, then coil 6 is screwed in stationary pipes, brake spring 10 is put into again to coil right-hand member, clutch pipe 7 is put into until the boss of clutch pipe enters the direction recess 41 (position of clutch pipe and nut pipe as shown in figure 17) of nut pipe along coil right-hand member, scale locator 8 is pressed into again to coil right-hand member, the location of scale locator coupling muscle is inserted in the location coupling slot of clutch pipe until the muscle of annular stop shown in Figure 21 83 crosses the annular convex rib 66 (axis of annular convex rib 66 pairs of scale locators is carried out spacing) of coil, the counterbore 80 finally button 9 being pressed into by force scale locator is interior (see Figure 21, in the draw-in groove 89 making the annular chuck 91 of button fall into scale locator, button and scale locator are located by axial limiting, frictional force when now the tip 92 of button contacts with the base point of counterbore 80 thus makes both mutually rotate is less), screw thread syringe needle being screwed in injection sleeve pipe front end can use, being enclosed within outside injection sleeve pipe with the cap for brush shown in Figure 12 after finishing using makes it become lip pencil (certainly, also first syringe needle can be taken out before being inserted in the cap for brush and preserve in addition).
Using method, see Figure 16 and 17, observe by right view direction, when rotating clockwise rotary handle 62, coil moves right under helicla flute interacts with the spiral bar of stationary pipes, and (now the end-tooth 72 of clutch pipe is separated--clutch is in released state--as shown in FIG. 16 and 17) with the teeth groove 64 of coil, and the elasticity sour jujube of nut pipe front end 42 and ratchet 52 reverse coupled of stationary pipes and make to be prevented through rotary handle, scale locator, clutch pipe, the rotation that is delivered to screwed pipe, rotary handle rotates relative to scale locator, when regulate excessive need to rotate counterclockwise rotary handle 62 time, forward frictional force because of the elasticity sour jujube 42 of nut pipe and the ratchet 52 of stationary pipes is greater than the frictional force between the scale locating slot of coil and the elastic arm dop of scale locator, makes that nut pipe is static and coil and scale locator slip classification rotate, after completing metering adjustment, hand button end face 93, the pressure overcoming brake spring makes the end-tooth 72 on clutch pipe engage with the teeth groove 66 of coil, coil is subject to internal force and counterclockwise rotates, also be rotated counterclockwise by the interaction clutch pipe of end-tooth and teeth groove, boss in clutch pipe by direction recess drive nut pipe be rotated counterclockwise (now between the elasticity sour jujube head of nut pipe and the ratchet of stationary pipes for forward is coupled, thus can forced rotating), nut pipe makes by screw thread couple screw rod rotate and promotes the piston extruded in injection pipe to moving ahead injection is injected in human body from syringe needle.
User can observe the unit scales of 0 ~ 60 of coil surface in the process regulating metering from the form of stationary pipes.
Because be all be connected together by force between injection sleeve pipe and stationary pipes, between button and scale locator, between scale locator and coil, can not extract again after engaging by force, so when the injection in injection pipe being extruded completely bottom using screw rod and being pushed to, because the elasticity sour jujube head of nut pipe oppositely engages with the ratchet of stationary pipes and makes screw rod retreat, so not reproducible use, be disposable.
Do not beat hatching for the ease of observing each section in Figure 16 and 17, and on the part product of correspondence, beaten hatching in Figure 18,19,20,21.
Claims (6)
1. Disposable insulin injection pen with adjustable dosage, comprise the cap for brush, syringe needle, built-in piston pre-installed the injection pipe of medicament, injection sleeve pipe, positioning wedged block, screw rod, nut pipe, stationary pipes, coil, clutch pipe, scale locator and button, it is characterized in that screw rod both sides vertically respectively cut-out screw thread form two tangent planes be parallel to each other, screw front end is pressure head, screw rod is coupled with the internal thread of nut pipe through after the pilot hole of positioning wedged block central authorities, and the inwall of described pilot hole has pair of sidewalls to match with two tangent planes of screw rod respectively, it is leading portion and back segment that stationary pipes inwall is provided with annular block reinforcement by stationary pipes internal wall separates, described back segment inwall is provided with spiral bar, the pipe shaft external diameter of nut pipe and the internal diameter of described annular block reinforcement slide and to match and this pipe shaft extends to the back segment of described stationary pipes, the front end of nut pipe is positioned at the leading portion of stationary pipes and arranges a pair symmetrical and radially elasticity sour jujube head of bending and stretching of elasticity, stationary pipes leading portion arranges the some ratchets along stationary pipes leading portion inwall annular spread near described annular block reinforcement place, described ratchet and described elasticity sour jujube head match and make nut pipe screw rod can only be driven to move forward along single direction rotation, this elasticity sour jujube head is between described positioning wedged block and the annular block reinforcement of described stationary pipes, the injection pipe box of built-in piston is in described injection sleeve pipe, injection sleeve pipe front end and syringe needle screw thread match, the tail end inwall of injection sleeve pipe has symmetrical button hole, positioning wedged block is provided with two elastic buckles pin buckled into respectively in described button hole and makes to interfix between positioning wedged block and injection sleeve pipe, to interfix between stationary pipes and positioning wedged block in the groove that the elasticity card base that positioning wedged block stretches out forward two tiles outwards snaps in described stationary pipes leading portion inwall respectively, the spiral bar that coil outer wall has helicla flute and described stationary pipes back segment inwall matches, nut pipe is stated in the clutch pipe box residence being positioned at coil, and coil inwall front end is provided with boss stretches in the direction recess that described nut tube outer surface extends vertically, on front side of the annular convex ring of clutch pipe distal outer surface, some end-tooths stretched out forward are set, be provided with the teeth groove matched with each end-tooth in coil, between described clutch pipe and coil, be provided with brake spring, make scale locator and clutch pipe can synchronous rotary in the location coupling slot that location that scale locator front end face stretches out coupling muscle inserts clutch pipe inner wall at end, the outer wall of scale locator is provided with annular stop muscle, coil afterbody inwall is provided with annular convex rib, the internal diameter of this annular convex rib is less than the external diameter of described annular stop muscle, scale locator is provided with radially-protruding elastic arm dop, coil to should elastic arm dop position annularly inwall some axial scale locating slots are set, scale locator tail end face is provided with the counterbore of inner wall belt draw-in groove, the mandrel outer surface that button front end is stretched out is provided with the annular chuck matched with the draw-in groove of described counterbore, stationary pipes have form can observe be engraved in coil outer surface and along helicla flute trend scale,
Described screw flight is dextrorotation, and the helicla flute of described coil outer surface is left-handed;
During use, the cap for brush be enclosed within outside injection sleeve pipe is extracted, now, under the effect of brake spring, the end-tooth of clutch pipe is separated with the teeth groove in coil, rotate forward the rotary handle of the coil stretching out stationary pipes afterbody, the elasticity sour jujube head of nut pipe front end and the ratchet reverse coupled of stationary pipes and the scale locating slot in coil is slided relative to the elastic arm dop of scale locator, elastic arm dop often slips over a scale locating slot coil and just drives clutch pipe outwards to move a measurement unit vertically, the scale on coil surface is observed until the rotary handle that stops operating after required injection volume by the form of stationary pipes, complete metering to regulate, injection volume regulates accurately, hand button end face, the pressure overcoming brake spring makes the end-tooth on clutch pipe engage with the teeth groove of coil, and coil reversely rotates and drives clutch pipe, nut pipe rotate and make the piston in screw rod driven forward extruding injection pipe that injection is injected in human body from syringe needle.
2. Disposable insulin injection pen with adjustable dosage according to claim 1, it is characterized in that the groove of described stationary pipes leading portion is the annular groove around stationary pipes inwall, the axial location muscle that the outer wall of described positioning wedged block is provided with axial location groove inwall place corresponding to stationary pipes matches.
3. Disposable insulin injection pen with adjustable dosage according to claim 1 or 2, it is characterized in that described injection sleeve pipe afterbody is provided with the card base of two tiles, and described two card bases lay respectively between two elasticity card bases that described positioning wedged block stretches out forward, and the elastic card bottoms of the card base of two tiles and two tiles is circularized.
4. Disposable insulin injection pen with adjustable dosage according to claim 1 or 2, is characterized in that the end-tooth stretched out forward on front side of the annular convex ring of described clutch pipe distal outer surface is sawtooth.
5. Disposable insulin injection pen with adjustable dosage according to claim 1 or 2, it is characterized in that the mandrel front end of described button is tip, this tip props up the bottom of the counterbore of described scale locator.
6. Disposable insulin injection pen with adjustable dosage according to claim 1 or 2, is characterized in that described injection sleeve pipe afterbody is provided with annular snap muscle and snaps in the annular slot of stationary pipes leading portion inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010146368.0A CN101829381B (en) | 2010-04-07 | 2010-04-07 | Disposable insulin injection pen with adjustable dosage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010146368.0A CN101829381B (en) | 2010-04-07 | 2010-04-07 | Disposable insulin injection pen with adjustable dosage |
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| Publication Number | Publication Date |
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| CN101829381A CN101829381A (en) | 2010-09-15 |
| CN101829381B true CN101829381B (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010146368.0A Active CN101829381B (en) | 2010-04-07 | 2010-04-07 | Disposable insulin injection pen with adjustable dosage |
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| CN102205156B (en) * | 2011-05-23 | 2012-07-25 | 庄青山 | Dual-quantization injector special for insulin |
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| JP6199303B2 (en) | 2011-11-08 | 2017-09-20 | ノボ・ノルデイスク・エー／エス | Medical injection system with medical injection device and dose limiting module |
| CN102716529B (en) * | 2012-06-29 | 2014-02-19 | 北京甘甘科技有限公司 | Pen injector |
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| CN106267474A (en) * | 2016-09-27 | 2017-01-04 | 严虎荣 | A kind of injection novopen automatically |
| CN107693901B (en) * | 2017-10-31 | 2024-04-26 | 淮安易捷科技有限公司 | Insulin injection device with push-off needle mechanism and needle |
| CN109078240B (en) * | 2018-09-30 | 2024-05-14 | 江苏德尔福医疗器械有限公司 | Disposable injection pen with dosage feedback device |
| US11690960B2 (en) * | 2019-11-14 | 2023-07-04 | Congruence Medical Solutions, Llc | Variable dosing syringe |
| CN114845758A (en) * | 2019-12-18 | 2022-08-02 | 诺和诺德股份有限公司 | Injection device for delivering liquid drug |
| JP7394498B2 (en) * | 2020-04-28 | 2023-12-08 | 群康生技股▲分▼有限公司 | Syringe |
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| Publication number | Publication date |
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| CN101829381A (en) | 2010-09-15 |
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Effective date of registration: 20160815 Address after: 528415 Guangdong Province, Zhongshan City Xiaolan Town Ronghua Road No. 2 Patentee after: Zhongshan Huifeng Medical Packing Technology Co., Ltd. Address before: 528415 Guangdong Province, Zhongshan City Xiaolan Town Ronghua Road No. 2 Patentee before: Deng Yuanji |