CN105477744A - Dose-fixable disposable injection pen - Google Patents
Dose-fixable disposable injection pen Download PDFInfo
- Publication number
- CN105477744A CN105477744A CN201510318346.0A CN201510318346A CN105477744A CN 105477744 A CN105477744 A CN 105477744A CN 201510318346 A CN201510318346 A CN 201510318346A CN 105477744 A CN105477744 A CN 105477744A
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- China
- Prior art keywords
- adjusting rod
- shell
- disposable injection
- injection pen
- axle sleeve
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a dose-fixable disposable injection pen, comprising an external button, an adjusting rod, a shaft sleeve, an outer shell, a screw, a refill support and a lower shell. The external button is mounted at an upper end of the adjusting rod. The screw is mounted on the adjusting rod through the shaft sleeve. The outer wall of the screw is provided with a locking groove in which a ratchet tooth structure is arranged. The lower end of the shaft sleeve is provided with a pawl mechanism. The outer shell encases the adjusting rod. A guide groove is arranged in the outer shell. The lower end of the inside of the outer shell is provided with a unidirectional ratchet tooth surface which forms a rotational adjusting feedback mechanism with the pawl mechanism of the shaft sleeve, the bottom of the outer shell is provided with a pawl structure forming an inverted claw structure with the ratchet tooth structure on the screw, and the adjusting rod is provided with a guide block engaging with the guide groove. The design with thread drive and guide groove is used, actual push-in is controlled by means of rotational angle adjusting, which gives convenience of operation in terms of both adjusting precision and torque conversion, and precise guidance of the guide groove ensures that injection is irreversible.
Description
Technical field
The present invention relates to medical treatment, beauty treatment and other associated biomolecule sciemtifec and technical sphere, particularly relate to a kind of disposable injection pen of fixed dosage.
Background technology
At present, for some especial patients clinically, such as diabetics, hepatitis etc., need to carry out insulin injection, interferon, auxin, vaccine etc. through different occasion oneself of being everlasting, its injected dose precise requirements is high especially, common patient is in the process using old-fashioned disposable syringe, both inconvenient, and can not effectively reach accurate medication; In addition, existing can accurate injection device to there is price high, complex structure, uses the shortcomings such as inconvenience.
Summary of the invention
The object of the invention is to: for above-mentioned Problems existing, a kind of disposable injection pen of fixed dosage is provided.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of disposable injection pen of fixed dosage, comprise external button, adjusting rod, axle sleeve, shell, screw mandrel, pen core support and lower casing, described external button is arranged on adjusting rod upper end, described screw mandrel is arranged on adjusting rod by axle sleeve, the outer wall of screw mandrel is provided with draw-in groove, and in draw-in groove, be provided with chaste tree toothing, the lower end of axle sleeve is provided with Jing Zhao mechanism, shell is set with outside adjusting rod, enclosure is provided with gathering sill, enclosure lower end is provided with the unidirectional chaste tree flank of tooth being formed with the Jing Zhao mechanism of axle sleeve and rotate regulation feedback mechanism, outer casing bottom is provided with the chaste tree pawl structure forming the structure of falling claw with the chaste tree toothing on screw mandrel, adjusting rod is provided with the guide pad matched with gathering sill, the described upper end of pen core support is connected with the lower end of adjusting rod, and described pen core support is set with lower casing, and described shell is provided with the step fixed with lower casing.
As preferably, described adjusting rod is provided with digital metering scale, the prompting that puts in place, direction of rotation prompting one or more combination.
As preferably, described screw mandrel is provided with external screw thread, correspondingly, in described axle sleeve, is provided with the female thread matched.
As preferably, the packaged type of described pen core support can adopt bonding or can not the reverse buckling type locking of rollback.
As preferably, described external button lower end adopts the buckle of falling claw.
As preferably, described axle sleeve upper end adopts the guiding buckle of falling claw.
As preferably, described shell is provided with shell fragment shape salient point.
As preferably, described adjusting rod lower end outer wall is provided with gathering sill, chaste tree wheel guiding puts mechanism and chaste tree tooth in place.
The invention has the beneficial effects as follows:
1, compared with prior art, the present invention adopts the design of screw drive and gathering sill, adopt the mode of the adjustment anglec of rotation to control actual push-in stroke simultaneously, this convenient operation that all can seem on degree of regulation and in moment conversion, simultaneously due to the accurate guide effect of gathering sill, ensure that the irreversibility of injection.
2, the present invention adopts the design of unidirectional irreversible left hand thread and gathering sill benchmark guiding, after one-period terminates, must readjust and just can carry out next injection process, adjusting rod coordinates with the accurate of shell gathering sill simultaneously, avoids the injection danger that user brings because of misoperation; In addition, the chaste tree toothing of screw mandrel and the chaste tree pawl structure of outer casing bottom can form self-locking in injection process, also prevent screw mandrel produces rollback probability because medicinal liquid is intrinsic pressure.From overall structure, outward appearance is close to sealed design, and the product that can show is more attractive in appearance high-end, it also avoid dust and small particle simultaneously and falls into the unsafe factor that pen core brings.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is decomposition texture schematic diagram of the present invention;
Fig. 2 is shell mechanism schematic diagram of the present invention;
Fig. 3 be in Fig. 2 A to structural representation;
Fig. 4 be in Fig. 2 B to structural representation;
Fig. 5 is the structural representation of adjusting rod of the present invention;
Fig. 6 is the structural representation of axle sleeve of the present invention;
Fig. 7 is the structural representation of illustrated screw mandrel.
Shown in figure: 1. external button, 2. adjusting rod, 3. axle sleeve, 4. shell, 5. screw mandrel, 6. pen core support, 7. lower casing.
Detailed description of the invention
All features disclosed in this description, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this description (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figures 1 to 4, a kind of disposable injection pen of fixed dosage, comprise external button 1, adjusting rod 2, axle sleeve 3, shell 4, screw mandrel 5, pen core support 6 and lower casing 7, described external button 1 is arranged on adjusting rod 2 upper end, and the buckle of falling claw and the described axle sleeve upper end of the described external button 1 lower end claw that leads is clasped and is connected, adjusting rod 2 is provided with digital metering scale, put in place prompting, direction of rotation is pointed out, described screw mandrel 5 is arranged on adjusting rod 2 by axle sleeve 3, described screw mandrel 5 is provided with external screw thread, correspondingly, the female thread matched is provided with in described axle sleeve 3, both are connected, the outer wall of screw mandrel 5 is provided with draw-in groove, and in draw-in groove, be provided with chaste tree toothing, the lower end of axle sleeve 3 is provided with Jing Zhao mechanism, shell 4 is set with outside adjusting rod 2, shell 4 inside is provided with gathering sill, shell 4 interior lower end is provided with the unidirectional chaste tree flank of tooth being formed with the Jing Zhao mechanism of axle sleeve 3 and rotate regulation feedback mechanism, the chaste tree pawl structure forming the structure of falling claw with the chaste tree toothing on screw mandrel 5 is provided with bottom shell 4, adjusting rod 2 is provided with the guide pad matched with gathering sill, the upper end of described pen core support 6 is connected with the lower end of adjusting rod 2, described pen core support 6 is set with lower casing 7, described shell 4 is provided with the step fixed with lower casing 7, and the packaged type of described pen core support 6 can adopt bonding or can not the reverse buckling type locking of rollback.
Rotary regulating lever 2, the mechanism that puts in place of the chaste tree wheel guiding on adjusting rod 2 upper and lower side outer wall matches with the shell fragment shape salient point on shell 4, enters dosage adjustment state.Now extract adjusting rod 2, adjust dosages, the shell fragment shape salient point on shell 4 and adjusting rod 2 lower end chaste tree tooth coordinate the feedback forming sound and feel.
The present invention in use, pulls out lower casing 7 by hand, screws off pen core support 6, medicinal liquid is loaded pen core support 6, rotary pen core support 6 and adjusting rod 2 revolve motionless till, now, owing to pen core devising one-way spiral guiding mechanism, on shell 4, devise a gathering sill simultaneously, due to the effect of gathering sill, adjusting rod 2 first pulls back, when rotating adjust dosages, the chaste tree pawl structure of axle sleeve 3 can form the feedback sound engaging and produce " click, click " with the chaste tree flank of tooth bottom shell 4.Meanwhile, adjusting rod 2 can see numerical dosage.After adjust dosages completes, the adjusting rod 2 of back-out is firmly pushed back initial point forward, the injection process of the specified dosage of single terminates, and because the chaste tree toothing on screw mandrel 5 and the chaste tree pawl structure bottom shell 4 can form self-locking, can prevent screw mandrel 5 under the effect that medicinal liquid is intrinsic pressure, producing rollback like this.Whole single injection end cycle, maximum injection amount is 3ml, and single nominal injection amount is 5mcg (note: 5mcg=20uml).
The present invention adopts the adjustment of double thread screw mandrel pitch parameter, the injection to specified dosage is realized in conjunction with enclosure guiding mechanism, this writing-core type syringe adopts factory inoculated seal structure, and the packaged type in a storehouse can adopt bonding or can not the reverse buckling type locking of rollback.
In sum, the present invention has that parts are few, cost is low, injected dose is specified, injection precision is high, drive mechanism is simple, volume is little, easy to use, the advantage such as be easy to carry about with one, and is worth promoting the use of on a large scale.
Above-described specific embodiment, further describes object of the present invention, technical scheme and beneficial effect, and institute it should be understood that and the foregoing is only specific embodiments of the invention, is not limited to the present invention.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (8)
1. the disposable injection pen of a fixed dosage, it is characterized in that: comprise external button, adjusting rod, axle sleeve, shell, screw mandrel, pen core support and lower casing, described external button is arranged on adjusting rod upper end, described screw mandrel is arranged on adjusting rod by axle sleeve, the outer wall of screw mandrel is provided with draw-in groove, and in draw-in groove, be provided with chaste tree toothing, the lower end of axle sleeve is provided with Jing Zhao mechanism, shell is set with outside adjusting rod, enclosure is provided with gathering sill, enclosure lower end is provided with the unidirectional chaste tree flank of tooth being formed with the Jing Zhao mechanism of axle sleeve and rotate regulation feedback mechanism, outer casing bottom is provided with the chaste tree pawl structure forming the structure of falling claw with the chaste tree toothing on screw mandrel, adjusting rod is provided with the guide pad matched with gathering sill, the described upper end of pen core support is connected with the lower end of shell, and described pen core support is set with lower casing, and described shell is provided with the step fixed with lower casing.
2. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: described adjusting rod is provided with digital metering scale, the prompting that puts in place, direction of rotation prompting one or more combination.
3. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: on described screw mandrel, be provided with external screw thread, correspondingly, is provided with the female thread matched in described axle sleeve.
4. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: the packaged type of described pen core support can adopt bonding or can not the reverse buckling type locking of rollback.
5. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: described external button lower end adopts the buckle of falling claw.
6. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: described axle sleeve upper end adopts the guiding buckle of falling claw.
7. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: described shell is provided with shell fragment shape salient point.
8. the disposable injection pen of a kind of fixed dosage according to claim 1, is characterized in that: described adjusting rod lower end outer wall is provided with gathering sill, chaste tree wheel guiding puts mechanism and chaste tree tooth in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318346.0A CN105477744A (en) | 2015-06-11 | 2015-06-11 | Dose-fixable disposable injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318346.0A CN105477744A (en) | 2015-06-11 | 2015-06-11 | Dose-fixable disposable injection pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105477744A true CN105477744A (en) | 2016-04-13 |
Family
ID=55665246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510318346.0A Pending CN105477744A (en) | 2015-06-11 | 2015-06-11 | Dose-fixable disposable injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105477744A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603638A (en) * | 2020-05-28 | 2020-09-01 | 江苏华阳智能装备股份有限公司 | Intelligent double-track pulse type medical instrument control system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005018721A1 (en) * | 2003-08-12 | 2005-03-03 | Eli Lilly And Company | Medication dispensing apparatus with triple screw threads for mechanical advantage |
| CN201394249Y (en) * | 2009-03-31 | 2010-02-03 | 东正兴业模具(北京)有限公司 | Pen-type injection device |
| CN102099073A (en) * | 2008-05-20 | 2011-06-15 | 赛诺菲-安万特德国有限公司 | Drive assembly suitable for use in a drug delivery device and drug delivery device |
| CN102361660A (en) * | 2009-01-20 | 2012-02-22 | 未来注射技术有限公司 | Injection device |
| CN102753214A (en) * | 2009-12-01 | 2012-10-24 | 贝克顿·迪金森公司 | Injection pen with dial back and last dose control |
| CN203591496U (en) * | 2013-10-10 | 2014-05-14 | 明高五金制品（深圳）有限公司 | Insulin syringe |
| CN104338211A (en) * | 2013-08-02 | 2015-02-11 | 贝克顿·迪金森公司 | Injection pen |
| CN204766874U (en) * | 2015-06-11 | 2015-11-18 | 常州德尔福科技有限公司 | Disposable injection pen of fixed dosage |
-
2015
- 2015-06-11 CN CN201510318346.0A patent/CN105477744A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005018721A1 (en) * | 2003-08-12 | 2005-03-03 | Eli Lilly And Company | Medication dispensing apparatus with triple screw threads for mechanical advantage |
| CN102099073A (en) * | 2008-05-20 | 2011-06-15 | 赛诺菲-安万特德国有限公司 | Drive assembly suitable for use in a drug delivery device and drug delivery device |
| CN102361660A (en) * | 2009-01-20 | 2012-02-22 | 未来注射技术有限公司 | Injection device |
| CN201394249Y (en) * | 2009-03-31 | 2010-02-03 | 东正兴业模具(北京)有限公司 | Pen-type injection device |
| CN102753214A (en) * | 2009-12-01 | 2012-10-24 | 贝克顿·迪金森公司 | Injection pen with dial back and last dose control |
| CN104338211A (en) * | 2013-08-02 | 2015-02-11 | 贝克顿·迪金森公司 | Injection pen |
| CN203591496U (en) * | 2013-10-10 | 2014-05-14 | 明高五金制品（深圳）有限公司 | Insulin syringe |
| CN204766874U (en) * | 2015-06-11 | 2015-11-18 | 常州德尔福科技有限公司 | Disposable injection pen of fixed dosage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111603638A (en) * | 2020-05-28 | 2020-09-01 | 江苏华阳智能装备股份有限公司 | Intelligent double-track pulse type medical instrument control system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |
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| RJ01 | Rejection of invention patent application after publication |