CN104491956B - A kind of injection pen - Google Patents
A kind of injection pen Download PDFInfo
- Publication number
- CN104491956B CN104491956B CN201410842912.3A CN201410842912A CN104491956B CN 104491956 B CN104491956 B CN 104491956B CN 201410842912 A CN201410842912 A CN 201410842912A CN 104491956 B CN104491956 B CN 104491956B
- Authority
- CN
- China
- Prior art keywords
- chaste tree
- axle sleeve
- injection pen
- button
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/24—Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2026—Semi-automatic, e.g. user activated piston is assisted by additional source of energy
Abstract
The present invention relates to a kind of injection pen, including injection pen housing, external button, button shell, described injection pen enclosure interior is provided with the spiral button with chaste tree pawl, movable chaste tree wheel, main shaft spring, chaste tree axle sleeve, female thread chaste tree wheel, propulsion screw mandrel, pen core shell；This invention simplifies operating process, it is easier to controlling, using external medicine bottle, beneficial to recycling, production low cost, is increased economic efficiency.
Description
Technical field
The present invention relates to medical instruments field, a kind of injection pen is specifically disclosed.
Background technology
Various injection pen is a lot of in the market, is primarily present some shortcoming following：
1st, controlled using screw knob mode more than existing product, operation is complex；
2nd, medicine bottle for injection is mostly built-in, using being unfavorable for after terminating reclaiming, pollutes environment；
3rd, product cost is higher, and consumer is not easily accepted by；
4th, assembly technology is excessively complicated, is difficult to realize and produces in enormous quantities.
Content of the invention
It is an object of the invention to：In order to solve, problem above offer one kind is simple to operate, easily controllable, injected rear medicine bottle
Recoverable, low cost, structure are simple, the simple injection pen of assembly technology.
The technical solution adopted in the present invention is such：
A kind of injection pen, including injection pen housing, external button, button shell, in the setting of described injection pen enclosure interior
There are the spiral button with chaste tree pawl, movable chaste tree wheel, main shaft spring, chaste tree axle sleeve, female thread chaste tree wheel, propulsion screw mandrel, pen core shell, described
External button is connected with described spiral button one end, and both are provided with back-moving spring in junction；The described spiral button other end sets
It is equipped with chaste tree pawl, it is taken turns with described activity chaste tree and engages；Described chaste tree axle sleeve is hollow form, is also equipped with chaste tree pawl in its one end, another
End is taken turns through described activity chaste tree, inserts described spiral button interior；Described main shaft spring is socketed in described chaste tree axle sleeve, one
End is taken turns with described activity chaste tree and is abutted against, and the other end is abutted against with chaste tree pawl in described chaste tree axle sleeve；Described female thread chaste tree wheel with described
Chaste tree pawl engagement in chaste tree axle sleeve；Described propulsion screw mandrel one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel, is inserted into
Inside described chaste tree axle sleeve, the other end exposes to described injection pen housing, for injection propulsion；Described pen core shell is in both ends open
Cylindrical shape, at one end opening, on inner surface, be provided with casting lug thereon, described casting lug thereon is connected in screw thread on described spiral button
Interior, the other end is connected with described female thread chaste tree wheel.
Further, described chaste tree axle sleeve is inserted described spiral button interior and is not supported with described spiral button inner top
Connect.
Further, the medial wall taken turns in described activity chaste tree is provided with fin, sets in described chaste tree axle sleeve elongatedness direction
It is equipped with the groove matching with described fin.
Further, the rotation of described chaste tree axle sleeve makes described propulsion screw mandrel outwards screw out.
Further, the pitch of described propulsion screw mandrel is 0.5～2mm, and reach is 5～40mm.
Further, the pitch of described propulsion screw mandrel is 1～1.5mm, and reach is 10～25mm.
In sum, due to adopting technique scheme, the invention has the beneficial effects as follows：
1st, the present invention adopts button control, and during down pressing, spiral button itself can be in the effect of thread groove
Under carry out the action of a rotation；During rotation, spiral button (band chaste tree pawl), movable chaste tree wheel, chaste tree axle sleeve, female thread chaste tree
Wheel, has an identical angle amount of spin, so that threaded screw rod promotion is more smooth precisely, also simplify simultaneously and operated
Journey.
2nd, during pressing, a vertical moment is first converted into a turning moment by pen core mechanism, in spiral shell
Again a turning moment is converted into the vertical moment of screw mandrel propulsion in the presence of stricture of vagina.The conversion of moment is it is achieved that push away twice
Enter screw mandrel and the speed changing function of spiral button.
3rd, adopting chaste tree to take turns chaste tree claw the present invention more and design the irreversibility it is achieved that in rotation process, simultaneously using process
A feedback sound can be obtained, thus more easily controlling.
4th, the present invention adopts the separation design of medicine bottle and pen core, so still can be given up even with after terminating
The recovery of product, is conducive to environmental protection.
5th, the structure of the present invention is simple, and parts are all easy to process, and are easily assembled, such that it is able to reduce product
This, improve its economic benefit.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is Fig. 1 along A-A direction sectional view；
Fig. 3 is spiral press-button structure figure of the present invention；
Fig. 4 is chaste tree axle sleeve structural representation of the present invention；
Fig. 5 is activity chaste tree wheel construction schematic diagram of the present invention；
Fig. 6 is female thread chaste tree wheel construction schematic diagram of the present invention；
Fig. 7 is propulsion screw structure schematic diagram of the present invention.
In figure labelling：1st, external button；2nd, back-moving spring；3rd, spiral button；4th, pen core shell；5th, movable chaste tree wheel；6th, main shaft
Spring；7th, chaste tree axle sleeve；8th, female thread chaste tree wheel；9th, advance screw mandrel；10th, button shell；11st, injection pen housing.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail.
As shown in Fig. 1～7, a kind of injection pen, including injection pen housing 11, external button 1, button shell 10, described
Injection pen enclosure interior is provided with the spiral button 3 with chaste tree pawl, movable chaste tree wheel 5, main shaft spring 6, chaste tree axle sleeve 7, female thread chaste tree
Wheel 8, propulsion screw mandrel 9, pen core shell 4, described external button 1 is connected with described spiral button 3 one end, and both junctions are provided with multiple
Position spring 2；Described spiral button 3 other end is provided with chaste tree pawl, and it is taken turns 5 with described activity chaste tree and engages.
Described chaste tree axle sleeve 7 is hollow form, is also equipped with chaste tree pawl in its one end, and the other end passes through described activity chaste tree wheel 5, inserts
Enter described spiral button 3 inside and do not abut so that this injection pen ensures in use with described spiral button 3 inner top
Described chaste tree spiral button 3 can be freely-movable unrestricted downwards.
The medial wall taking turns 5 in described activity chaste tree is provided with fin, is provided with and institute in described chaste tree axle sleeve 7 elongatedness direction
State the groove that fin matches, take turns in 5 rotation processes in described activity chaste tree and drive described chaste tree axle sleeve 7 to rotate；Described female thread
Chaste tree wheel 8 is engaged with chaste tree pawl in described chaste tree axle sleeve 7.
Described main shaft spring 6 is socketed in described chaste tree axle sleeve 7, and its one end is taken turns 5 with described activity chaste tree and abutted against, the other end
Abut against with chaste tree pawl in described chaste tree axle sleeve 7, main shaft spring 6 described in original state be in compressive state it is ensured that described activity chaste tree
Wheel 5 is taken turns with described female thread chaste tree with chaste tree pawl in chaste tree pawl on described spiral button 3, described chaste tree axle sleeve 7 and is tightly engaged.
Described propulsion screw mandrel 9 one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel 8, is inserted into described chaste tree wheel
Inside axle sleeve 7, the other end exposes to described injection pen housing, for injection propulsion；The rotation of described chaste tree axle sleeve 7 makes described
Propulsion screw mandrel 9 outwards screws out, for aerofluxuss before the injection and injection propulsion.
Described pen core shell 4 is in the cylindrical shape of both ends open, at one end opening, is provided with casting lug thereon on inner surface, described
Casting lug thereon is connected in screw thread on described spiral button 3, and the other end is connected with described female thread chaste tree wheel 8.
The pitch of described propulsion screw mandrel 9 is 1mm, and reach is 21mm.
Operation principle：
(1) aerofluxuss：When certain distance pressed by spiral button 3, due to the threaded function of itself, itself can rotate necessarily
Angle, now can drive chaste tree axle sleeve 7 to rotate equal angular in the presence of movable chaste tree wheel 5, then female thread chaste tree wheel 8 below
Also equal angular can be rotated, propulsion screw mandrel 9 also can be forced to push ahead certain distance and produce described chaste tree axle sleeve to external spiral
7, that is, realize degassing function.
(2) reset：After exhaust process terminates, movable chaste tree wheel 5 can reset upwards in the effect of main spring 6, then spiral is pressed
Button 3 also can reset upwards, but during resetting upwards, itself can be reversely rotated, but in female thread chaste tree wheel 8 effect
Under, propulsion screw mandrel 9 will not invert, and now reseting procedure terminates.
(3) inject：In injection process, press external button 1, spiral button 3 declines certain distance, then according to same
Principle propulsion screw mandrel 9 can advance downwardly certain distance, and injection process terminates.
Embodiment
(1) pitch of design propulsion screw mandrel is 1mm, and reach is 21mm.
(2) aerofluxuss：When 5mm pressed by spiral button 3, due to the threaded function of itself, itself can rotate 25.2 degree, this
When chaste tree axle sleeve 7 can be driven to rotate 25.2 degree in the presence of movable chaste tree wheel 5, then the female thread chaste tree of lower section is taken turns and 8 also can rotate
25.2 degree, because inside is tapped with the female thread of 1mm pitch, so while female thread chaste tree wheel 8 rotates 25.2 degree, also can force
Propulsion screw mandrel 9 travels forward 0.07mm, with this, that is, realizes the function of 5 microlitres of aerofluxuss.
(3) reset：After exhaust process terminates, movable chaste tree wheel 5 can reset upwards in the effect of main spring 6, then spiral is pressed
Button 3 also can reset upwards, but during resetting upwards, itself can be reversely rotated, but in female thread chaste tree wheel 8 effect
Under, propulsion screw mandrel 9 will not invert, and now, reseting procedure terminates.
(4) inject：In injection process, spiral button 3 declines 20mm, then can be to according to same principle propulsion screw mandrel 9
Lower propulsion 0.28mm, injection process terminates.
The reach of propulsion screw mandrel is designed as 21mm, then (complete shot propulsion after above procedure realizes 60 times
Screw mandrel advances 0.35mm, and reach is 21mm, and 60 injection screw threads push away and advance to the greatest extent screw mandrel 9 to release female thread chaste tree wheel 8), whole
Prop up pen to lose efficacy.
The foregoing is only the specific embodiment of the present invention, be not limited to the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement done etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of injection pen it is characterised in that：Including injection pen housing, external button, button shell, in described injection pen housing
It is internally provided with the spiral button with chaste tree pawl, movable chaste tree wheel, main shaft spring, chaste tree axle sleeve, female thread chaste tree wheel, propulsion screw mandrel, pen
Core shell, described external button is connected with described spiral button one end, and both are provided with back-moving spring in junction；Described spiral button
The other end is provided with chaste tree pawl, and it is taken turns with described activity chaste tree and engages；Described chaste tree axle sleeve is hollow form, is also equipped with chaste tree in its one end
Pawl, the other end passes through described activity chaste tree wheel, inserts described spiral button interior；Described main shaft spring is socketed on described chaste tree axle sleeve
On, its one end is taken turns with described activity chaste tree and is abutted against, and the other end is abutted against with chaste tree pawl in described chaste tree axle sleeve；Described female thread chaste tree wheel
Engage with chaste tree pawl in described chaste tree axle sleeve；Described propulsion screw mandrel one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel,
It is inserted into inside described chaste tree axle sleeve, the other end exposes to described injection pen housing, for injection propulsion；Described pen core shell is in two
The cylindrical shape of end opening, at one end opening, is provided with casting lug thereon on inner surface, and described casting lug thereon is connected in described spiral button
In upper screw thread, the other end is connected with described female thread chaste tree wheel.
2. a kind of injection pen according to claim 1 it is characterised in that：Described chaste tree axle sleeve is inserted in described spiral button
Portion and not abutting with described spiral button inner top.
3. a kind of injection pen according to claim 1 it is characterised in that：The medial wall taken turns in described activity chaste tree is provided with convex
Rib, is provided with, in described chaste tree axle sleeve elongatedness direction, the groove matching with described fin.
4. a kind of injection pen according to claim 1 it is characterised in that：The rotation of described chaste tree axle sleeve makes described propulsion
Screw mandrel outwards exits.
5. a kind of injection pen according to claim 1 it is characterised in that：The pitch of described propulsion screw mandrel is 0.5～2mm,
Reach is 5～40mm.
6. a kind of injection pen according to claim 5 it is characterised in that：The pitch of described propulsion screw mandrel is 1～1.5mm,
Reach is 10～25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842912.3A CN104491956B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410842912.3A CN104491956B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104491956A CN104491956A (en) | 2015-04-08 |
| CN104491956B true CN104491956B (en) | 2017-03-08 |
Family
ID=52933463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410842912.3A Active CN104491956B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104491956B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477743A (en) * | 2015-06-11 | 2016-04-13 | 江苏德尔福医疗器械有限公司 | Dose-adjustable disposable injection pen |
| CN105477745B (en) * | 2015-06-11 | 2022-03-25 | 江苏德尔福医疗器械有限公司 | Injection pen capable of adjusting dosage and being repeatedly used for multiple times |
| CN106215288A (en) * | 2016-09-28 | 2016-12-14 | 江苏德尔福医疗器械有限公司 | The adjustable fixed-quantity injector of aerofluxus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE60026147T2 (en) * | 1999-08-05 | 2006-11-23 | Becton, Dickinson And Co. | PEN DRIVE MEDICATION DISPENSER |
| CN102481415B (en) * | 2009-07-08 | 2014-03-05 | 诺沃—诺迪斯克有限公司 | Frost protected injection device |
| EP2298390A1 (en) * | 2009-08-28 | 2011-03-23 | Sanofi-Aventis Deutschland GmbH | Medical delivery device, housing cap for a medical delivery device and drive mechanism for a medical delivery device |
| WO2011068531A1 (en) * | 2009-12-01 | 2011-06-09 | Becton, Dickinson And Company | Injection pen with dial back and last dose control |
| EP2351591A1 (en) * | 2010-02-02 | 2011-08-03 | Sanofi-Aventis Deutschland GmbH | Assembly for a drug delivery device and drug delivery device |
| CN103260674B (en) * | 2010-10-13 | 2015-06-10 | 赛诺菲-安万特德国有限公司 | Dose setting mechanism and method of setting a dose |
| RU2653780C1 (en) * | 2011-03-16 | 2018-05-14 | Бектон, Дикинсон Энд Компани | Disposable syringe-pen for several doses |
| DK2768559T3 (en) * | 2011-10-17 | 2023-09-18 | Shl Medical Ag | DRUG DELIVERY DEVICE |
| CH703993A2 (en) * | 2012-02-09 | 2012-03-15 | Tecpharma Licensing Ag | Injection device for dispensing fluid product, has bearing coupling surfaces that are formed in coupling mechanism to produce acoustic/tactile signals corresponding to adjusted or corrected dose during dose dispensing process |
| ES2623081T3 (en) * | 2012-04-17 | 2017-07-10 | Carebay Europe Ltd | Medication Administration Device |
| CN102716529B (en) * | 2012-06-29 | 2014-02-19 | 北京甘甘科技有限公司 | Pen injector |
| CN203017504U (en) * | 2012-12-04 | 2013-06-26 | 邓源基 | Injection syringe capable of enabling user to adjust doses |
| CN204446827U (en) * | 2014-12-30 | 2015-07-08 | 江苏华阳电器有限公司 | A kind of injection pen |
-
2014
- 2014-12-30 CN CN201410842912.3A patent/CN104491956B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104491956A (en) | 2015-04-08 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20160304 Address after: Wujin District of Jiangsu city of Changzhou province Luoyang 213000 town Cen Village Applicant after: JIANGSU DELFU MEDICAL DEVICES CO., LTD. Address before: 213000, 8 Village Road, Luoyang Town, Wujin District, Jiangsu, Changzhou Applicant before: Jiangsu Huayang Electrical Appliances Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |