CN104491956A - Injection pen - Google Patents
Injection pen Download PDFInfo
- Publication number
- CN104491956A CN104491956A CN201410842912.3A CN201410842912A CN104491956A CN 104491956 A CN104491956 A CN 104491956A CN 201410842912 A CN201410842912 A CN 201410842912A CN 104491956 A CN104491956 A CN 104491956A
- Authority
- CN
- China
- Prior art keywords
- chaste tree
- injection pen
- axle sleeve
- 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.)
- Granted
Links
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 invention relates to an injection pen. The injection pen comprises an injection pen shell, an external button and a button housing; a spiral button with a pawl, a movable ratchet, a mainshaft spring, a ratchet shaft sleeve, an internal thread ratchet, a pushing screw rod and a pen core shell are arranged inside the injection pen shell. According to the injection pen disclosed by the invention, the operation process is simplified; the injection pen is easier to control; an external medicine bottle is used, so that recycling is facilitated and the production cost of a product is low; the economic benefit is increased.
Description
Technical field
The present invention relates to medical instruments field, specifically disclose a kind of injection pen.
Background technology
Various injection pen is a lot of in the market, and main exist some shortcoming following:
1, existing product many employings screw knob mode controls, and operation is comparatively complicated;
2, medicine bottle for injection mostly is built-in, uses after terminating and is unfavorable for reclaiming, contaminated environment;
3, product cost is higher, and consumer not easily accepts;
4, assembly technology is too complicated, is difficult to realize producing in enormous quantities.
Summary of the invention
The object of the invention is to: for overcome the above problems provide a kind of simple to operate, be easy to control, injected rear medicine bottle recoverable, cost is low, structure is simple, the simple injection pen of assembly technology.
The technical solution adopted in the present invention is such:
A kind of injection pen, comprise injection pen housing, external button, button shell, described injection pen enclosure interior is provided with the spiral button of band chaste tree pawl, movable chaste tree wheel, main shaft spring, chaste tree axle sleeve, female thread chaste tree wheel, propelling 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 is provided with chaste tree pawl, and it is taken turns with described movable chaste tree and engages; Described chaste tree axle sleeve is hollow form, is also provided with chaste tree pawl in its one end, and the other end, through described movable chaste tree wheel, inserts described spiral button interior; Described main shaft spring housing is connected in described chaste tree axle sleeve, and its one end and described movable chaste tree are taken turns and abut against, and in the other end and described chaste tree axle sleeve, chaste tree pawl abuts against; Described female thread chaste tree wheel engages with chaste tree pawl in described chaste tree axle sleeve; Described propelling screw mandrel one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel, then it is inner to insert described chaste tree axle sleeve, and the other end exposes to described injection pen housing, for injecting propelling; Described pen core shell is the cylindrical shape of both ends open, and its one end open place, inner surface are provided with casting lug thereon, and described casting lug thereon is connected on described spiral button in screw thread, and the other end and described female thread chaste tree are taken turns and be connected and fixed.
Further, described chaste tree axle sleeve is inserted described spiral button interior and is not abutted with described spiral button inner top.
Further, the medial wall of described movable chaste tree wheel is provided with fin, described chaste tree axle sleeve elongatedness direction is provided with the groove matched with described fin.
Further, the rotation of described chaste tree axle sleeve makes described propelling screw mandrel outwards screw out.
Further, the pitch of described propelling screw mandrel is 0.5 ~ 2mm, and reach is 5 ~ 40mm.
Further, the pitch of described propelling screw mandrel is 1 ~ 1.5mm, and reach is 10 ~ 25mm.
In sum, owing to adopting technique scheme, the invention has the beneficial effects as follows:
1, the present invention adopts button control, and in the process down pressed, spiral button itself can carry out the action of a rotation under the effect of thread groove; In rotation process, spiral button (band chaste tree pawl), movable chaste tree wheel, chaste tree axle sleeve, female thread chaste tree wheel, have an identical angle amount of spin, thus make threaded screw rod promotion more precisely smooth and easy, also simplify operating process simultaneously.
2, in the process pressed, a vertical moment has first been changed into a turning moment by pen core mechanism, a turning moment has been changed into the vertical moment that screw mandrel advances under the effect of screw thread again.The conversion of twice moment, achieves the speed changing function advancing screw mandrel and spiral button.
3, the present invention's many employings chaste tree wheel chaste tree claw design, achieve the irreversibility in rotation process, use procedure simultaneously can obtain a feedback sound, thus is more easy to control.
4, the present invention adopts the separation design of medicine bottle and pen core, even so use still can carry out the recovery of waste product after terminating, be conducive to environmental protection.
5, structure of the present invention is simple, and parts are all easy to processing, and is easy to assembling, thus can reduce product cost, improves its economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is that Fig. 1 is 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 movable 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 propelling screw structure schematic diagram of the present invention.
Labelling in figure: 1, external button; 2, back-moving spring; 3, spiral button; 4, pen core shell; 5, movable chaste tree wheel; 6, main shaft spring; 7, chaste tree axle sleeve; 8, female thread chaste tree wheel; 9, screw mandrel is advanced; 10, button shell; 11, injection pen housing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Fig. 1 ~ 7, a kind of injection pen, comprise injection pen housing 11, external button 1, button shell 10, be provided with the spiral button 3 of band chaste tree pawl, movable chaste tree wheel 5, main shaft spring 6, chaste tree axle sleeve 7, female thread chaste tree wheel 8 in described injection pen enclosure interior, advance 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 back-moving spring 2; Described spiral button 3 other end is provided with chaste tree pawl, and it is taken turns 5 with described movable chaste tree and engages.
Described chaste tree axle sleeve 7 is hollow form, also chaste tree pawl is provided with in its one end, the other end is through described movable chaste tree wheel 5, insert described spiral button 3 inner and do not abut with described spiral button 3 inner top, make this injection pen in use ensure described chaste tree spiral button 3 can freely-movable downwards not limited.
The medial wall of described movable chaste tree wheel 5 is provided with fin, described chaste tree axle sleeve 7 elongatedness direction is provided with the groove matched with described fin, takes turns in 5 rotation processes driving described chaste tree axle sleeve 7 to rotate in described movable chaste tree; Described female thread chaste tree wheel 8 engages 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, its one end and described movable chaste tree are taken turns 5 and abut against, in the other end and described chaste tree axle sleeve 7, chaste tree pawl abuts against, described in original state, main shaft spring 6 is in compressive state, ensures that described movable chaste tree wheel 5 and chaste tree pawl in chaste tree pawl, described chaste tree axle sleeve 7 on described spiral button 3 are taken turns with described female thread chaste tree and closely engages.
Described propelling screw mandrel 9 one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel 8, then it is inner to insert described chaste tree axle sleeve 7, and the other end exposes to described injection pen housing, for injecting propelling; The rotation of described chaste tree axle sleeve 7 makes described propelling screw mandrel 9 outwards screw out, and advances for aerofluxus before the injection and injection.
The cylindrical shape of described pen core shell 4 in both ends open, its one end open place, inner surface are provided with casting lug thereon, and described casting lug thereon is connected on described spiral button 3 in screw thread, and the other end and described female thread chaste tree are taken turns 8 and be connected and fixed.
The pitch of described propelling screw mandrel 9 is 1mm, and reach is 21mm.
Operation principle:
(1) aerofluxus: when certain distance pressed by spiral button 3, due to the threaded function of self, itself can turn an angle, now chaste tree axle sleeve 7 can be driven to rotate equal angular under the effect of movable chaste tree wheel 5, female thread chaste tree wheel 8 then below it also can rotate equal angular, also propelling screw mandrel 9 can be forced to push ahead certain distance and namely to produce described chaste tree axle sleeve 7 to external spiral, namely realize degassing function.
(2) reset: after exhaust process terminates, movable chaste tree wheel 5 upwards can reset in the effect of main spring 6, then spiral button 3 also can upwards reset, but in the process upwards resetted, itself can reversely rotate, but under female thread chaste tree wheel 8 effect, advance screw mandrel 9 to reverse, now reseting procedure terminates.
(3) inject: in injection process, press external button 1, spiral button 3 declines certain distance, then advance screw mandrel 9 can advance certain distance downwards according to same principle, injection process terminates.
Embodiment
(1) design advances the pitch of screw mandrel to be 1mm, and reach is 21mm.
(2) aerofluxus: when 5mm pressed by spiral button 3, due to the threaded function of self, itself can rotate 25.2 degree, now chaste tree axle sleeve 7 can be driven to rotate 25.2 degree under the effect of movable chaste tree wheel 5, then the female thread chaste tree wheel 8 of below also can rotate 25.2 degree, because the female thread of 1mm pitch is attacked in inside, so while female thread chaste tree wheel 8 rotates 25.2 degree, also can force and advance screw mandrel 9 to travel forward 0.07mm, with this, namely realize the function of aerofluxus 5 microlitre.
(3) reset: after exhaust process terminates, movable chaste tree wheel 5 upwards can reset in the effect of main spring 6, then spiral button 3 also can upwards reset, but in the process upwards resetted, itself can reversely rotate, but under female thread chaste tree wheel 8 effect, advances screw mandrel 9 to reverse, now, reseting procedure terminates.
(4) inject: in injection process, spiral button 3 declines 20mm, then advance screw mandrel 9 can advance 0.28mm downwards according to same principle, injection process terminates.
The reach of screw mandrel is advanced to be designed to 21mm, then after above process implementation 60 times, (completing a shot advances screw mandrel to advance 0.35mm, reach is 21mm, and 60 injection screw threads push away and to the greatest extent namely advance screw mandrel 9 to release female thread chaste tree wheel 8), whole pen lost efficacy.
The foregoing is only specific embodiments of the invention, be not limited to the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an injection pen, it is characterized in that: comprise injection pen housing, external button, button shell, described injection pen enclosure interior is provided with the spiral button of band chaste tree pawl, movable chaste tree wheel, main shaft spring, chaste tree axle sleeve, female thread chaste tree wheel, propelling 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 is provided with chaste tree pawl, and it is taken turns with described movable chaste tree and engages; Described chaste tree axle sleeve is hollow form, is also provided with chaste tree pawl in its one end, and the other end, through described movable chaste tree wheel, inserts described spiral button interior; Described main shaft spring housing is connected in described chaste tree axle sleeve, and its one end and described movable chaste tree are taken turns and abut against, and in the other end and described chaste tree axle sleeve, chaste tree pawl abuts against; Described female thread chaste tree wheel engages with chaste tree pawl in described chaste tree axle sleeve; Described propelling screw mandrel one end is provided with screw thread, and it is threaded through described female thread chaste tree wheel, then it is inner to insert described chaste tree axle sleeve, and the other end exposes to described injection pen housing, for injecting propelling; Described pen core shell is the cylindrical shape of both ends open, and its one end open place, inner surface are provided with casting lug thereon, and described casting lug thereon is connected on described spiral button in screw thread, and the other end and described female thread chaste tree are taken turns and be connected and fixed.
2. a kind of injection pen according to claim 1, is characterized in that: described chaste tree axle sleeve is inserted described spiral button interior and do not abutted with described spiral button inner top.
3. a kind of injection pen according to claim 1, is characterized in that: the medial wall of described movable chaste tree wheel is provided with fin, described chaste tree axle sleeve elongatedness direction is provided with the groove matched with described fin.
4. a kind of injection pen according to claim 1, is characterized in that: the rotation of described chaste tree axle sleeve makes described propelling screw mandrel outwards exit.
5. a kind of injection pen according to claim 1, is characterized in that: the pitch of described propelling screw mandrel is 0.5 ~ 2mm, and reach is 5 ~ 40mm.
6. a kind of injection pen according to claim 5, is characterized in that: the pitch of described propelling screw mandrel is 1 ~ 1.5mm, and 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 true CN104491956A (en) | 2015-04-08 |
| CN104491956B 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) |
Cited By (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 |
| CN105477745A (en) * | 2015-06-11 | 2016-04-13 | 江苏德尔福医疗器械有限公司 | Dose-adjustable reusable injection pen |
| 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 |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010484A1 (en) * | 1999-08-05 | 2001-02-15 | Becton, Dickinson And Company | Medication delivery pen |
| 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 |
| CN102481415A (en) * | 2009-07-08 | 2012-05-30 | 诺沃—诺迪斯克有限公司 | Frost protected injection device |
| CN102716529A (en) * | 2012-06-29 | 2012-10-10 | 甘李药业有限公司 | Pen injector |
| 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 |
| CN102821805A (en) * | 2010-02-02 | 2012-12-12 | 赛诺菲-安万特德国有限公司 | Assembly for drug delivery device and drug delivery device |
| WO2013058698A1 (en) * | 2011-10-17 | 2013-04-25 | Shl Group Ab | Medicament delivery device |
| CN203017504U (en) * | 2012-12-04 | 2013-06-26 | 邓源基 | Injection syringe capable of enabling user to adjust doses |
| CN103260674A (en) * | 2010-10-13 | 2013-08-21 | 赛诺菲-安万特德国有限公司 | Dose setting mechanism and method of setting a dose |
| WO2013156345A2 (en) * | 2012-04-17 | 2013-10-24 | Carebay Europe Ltd | Medicament delivery device |
| CN103492004A (en) * | 2011-03-16 | 2014-01-01 | 贝克顿·迪金森公司 | Multiple use disposable injection pen |
| CN104093440A (en) * | 2012-02-09 | 2014-10-08 | 特克法马许可公司 | Injection unit for administering or delivering fluid product |
| 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
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001010484A1 (en) * | 1999-08-05 | 2001-02-15 | Becton, Dickinson And Company | Medication delivery pen |
| CN102481415A (en) * | 2009-07-08 | 2012-05-30 | 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 |
| 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 |
| CN102821805A (en) * | 2010-02-02 | 2012-12-12 | 赛诺菲-安万特德国有限公司 | Assembly for drug delivery device and drug delivery device |
| CN103260674A (en) * | 2010-10-13 | 2013-08-21 | 赛诺菲-安万特德国有限公司 | Dose setting mechanism and method of setting a dose |
| CN103492004A (en) * | 2011-03-16 | 2014-01-01 | 贝克顿·迪金森公司 | Multiple use disposable injection pen |
| WO2013058698A1 (en) * | 2011-10-17 | 2013-04-25 | Shl Group Ab | Medicament delivery device |
| CN104093440A (en) * | 2012-02-09 | 2014-10-08 | 特克法马许可公司 | Injection unit for administering or delivering fluid product |
| WO2013156345A2 (en) * | 2012-04-17 | 2013-10-24 | Carebay Europe Ltd | Medicament delivery device |
| CN102716529A (en) * | 2012-06-29 | 2012-10-10 | 甘李药业有限公司 | 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 |
Cited By (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 |
| CN105477745A (en) * | 2015-06-11 | 2016-04-13 | 江苏德尔福医疗器械有限公司 | Dose-adjustable reusable injection pen |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104491956B (en) | 2017-03-08 |
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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. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |