CN204766874U - Disposable injection pen of fixed dosage - Google Patents
Disposable injection pen of fixed dosage Download PDFInfo
- Publication number
- CN204766874U CN204766874U CN201520400422.8U CN201520400422U CN204766874U CN 204766874 U CN204766874 U CN 204766874U CN 201520400422 U CN201520400422 U CN 201520400422U CN 204766874 U CN204766874 U CN 204766874U
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- China
- Prior art keywords
- shell
- chaste tree
- axle sleeve
- adjusting rod
- disposable injection
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Abstract
The utility model discloses a disposable injection pen of fixed dosage, including external button, regulation pole, axle sleeve, shell, lead screw, refill support and inferior valve, external button is installed and is being adjusted the pole upper end, the lead screw passes through bushing installation on adjusting the pole, the outer wall of lead screw is equipped with the draw -in groove, and be equipped with chaste tree tooth structure in the draw -in groove, the lower extreme of axle sleeve is equipped with chaste tree claw mechanism, it is equipped with the shell to adjust the pole overcoat, the inside guide way that is equipped with of shell, the inside lower extreme of shell is equipped with the one -way chaste tree flank of tooth that forms rotation regulation feedback mechanism with the chaste tree claw mechanism of axle sleeve, shell bottom be equipped with with the lead screw on the chaste tree claw structure of the chaste tree tooth structural formation formula of falling claw structure, be equipped with the guide block with guide way matched with on the regulation pole. The utility model discloses a design of screw drive and guide way, the while adopts adjustment rotation angle's mode to come the actual propulsion volume of control, and this operation of being convenient for that all can seem in the regulation precision and in the moment conversion is simultaneously because the irreversibility of injecting has been guaranteed in the accurate guide effect of guide way.
Description
Technical field
This utility model relates to medical treatment, beauty treatment and other associated biomolecule sciemtifec and technical sphere, particularly relates 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.
Utility model content
The purpose of this utility model is: for above-mentioned Problems existing, provides a kind of disposable injection pen of fixed dosage.
This utility model solves the technical scheme that its technical problem adopts:
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 beneficial effects of the utility model are:
1, compared with prior art, this utility model 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, this utility model 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, this utility model is further illustrated.
Fig. 1 is decomposition texture schematic diagram of the present utility model;
Fig. 2 is shell mechanism schematic diagram of the present utility model;
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 described in the utility model;
Fig. 6 is the structural representation of axle sleeve described in the utility model;
Fig. 7 is the structural representation of screw mandrel shown in this utility model.
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.
This utility model 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).
This utility model 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, this utility model 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 the purpose of this utility model, technical scheme and beneficial effect, and institute it should be understood that and the foregoing is only specific embodiment of the utility model, is not limited to this utility model.This utility model 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 |
|---|---|---|---|
| CN201520400422.8U CN204766874U (en) | 2015-06-11 | 2015-06-11 | Disposable injection pen of fixed dosage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520400422.8U CN204766874U (en) | 2015-06-11 | 2015-06-11 | Disposable injection pen of fixed dosage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204766874U true CN204766874U (en) | 2015-11-18 |
Family
ID=54507012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520400422.8U Active CN204766874U (en) | 2015-06-11 | 2015-06-11 | Disposable injection pen of fixed dosage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204766874U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477744A (en) * | 2015-06-11 | 2016-04-13 | 江苏德尔福医疗器械有限公司 | Dose-fixable disposable injection pen |
| CN110382021A (en) * | 2017-02-24 | 2019-10-25 | 群康生技股份有限公司 | Injection propulsive mechanism with dosage control function |
-
2015
- 2015-06-11 CN CN201520400422.8U patent/CN204766874U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477744A (en) * | 2015-06-11 | 2016-04-13 | 江苏德尔福医疗器械有限公司 | Dose-fixable disposable injection pen |
| CN110382021A (en) * | 2017-02-24 | 2019-10-25 | 群康生技股份有限公司 | Injection propulsive mechanism with dosage control function |
| CN110382021B (en) * | 2017-02-24 | 2021-06-01 | 群康生技股份有限公司 | Injection propulsion mechanism with dose control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Wujin District of Jiangsu city of Changzhou province Luoyang 213000 town Cen Village Patentee after: JIANGSU DELFU MEDICAL DEVICES CO., LTD. Address before: Wujin District of Jiangsu city of Changzhou province Luoyang 213000 town Cen Village Patentee before: CHANGZHOU DELFU TECHNOLOGY CO., LTD. |