CN104474609B - A kind of injection pen - Google Patents
A kind of injection pen Download PDFInfo
- Publication number
- CN104474609B CN104474609B CN201410841563.3A CN201410841563A CN104474609B CN 104474609 B CN104474609 B CN 104474609B CN 201410841563 A CN201410841563 A CN 201410841563A CN 104474609 B CN104474609 B CN 104474609B
- Authority
- CN
- China
- Prior art keywords
- push rod
- chaste tree
- core shell
- triangle
- pen core
- 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
-
- 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
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
-
- 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
- A61M5/36—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 with means for eliminating or preventing injection or infusion of air into body
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Emergency Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to a kind of injection pen, including pen core shell, also include the push rod through the pen core shell, it is arranged at the movable chaste tree wheel of the internal thread axle sleeve inside the pen core shell, triangle, spring and the positioning joint for being connected in the pen core shell lower end, the screw thread of certain length is provided with the push rod, and terminates place in screw thread and is provided with chaste tree pawl；The internal thread axle sleeve spiral is fixed on the push rod at screw thread；The movable chaste tree wheel of the triangle is nested on the push rod, is meshed with chaste tree pawl on the push rod；The spring is nested on the push rod, and its one end is abutted against with the movable chaste tree wheel of the triangle, and the other end is abutted against with the positioning joint；The positioning joint is socketed on the push rod；The present invention is simple in construction, using easy to operate, injection accurate, low production cost, compact structure, be easy to carry about with one.
Description
Technical field
The present invention relates to medical instruments field, a kind of injection pen is specifically disclosed.
Background technology
The various syringe species of in the market are various, and it is primarily present some following drawback：
1st, controlled, operated complex using screw knob mode more than existing product；
When the 2nd, for one milliliter of clamped bottle, some existing products are all directly to observe exhaust using human eye, it is impossible to accomplished
Precisely exhaust, can so cause the waste of decoction, while error when can also increase injection, reduces its injection precision；
3rd, product structure is complicated, and production cost is higher；
4th, it is complicated to cause assembly technology excessively cumbersome, add labor intensity；
5th, existing product size is larger, not portable.
The content of the invention
It is an object of the invention to：There is provided a kind of simple in construction, accurate using easy to operate, injection to solve problem above
Really, production cost is low, compact structure, the injection pen being easy to carry about with one.
The technical solution adopted in the present invention is such：
A kind of injection pen, including pen core shell, in addition to through the push rod of the pen core shell, be arranged inside the pen core shell
Internal thread axle sleeve, the movable chaste tree wheel of triangle, spring and the positioning joint for being connected in the pen core shell lower end, set on the push rod
There is the screw thread of certain length, and terminate place in screw thread and be provided with chaste tree pawl；The internal thread axle sleeve spiral is fixed on described push away
On bar at screw thread；The movable chaste tree wheel of the triangle is nested on the push rod, is meshed with chaste tree pawl on the push rod；The spring is embedding
It is placed on the push rod, its one end is abutted against with the movable chaste tree wheel of the triangle, and the other end is abutted against with the positioning joint；It is described
Positioning joint is socketed on the push rod, two grooves is provided with along its length in the pen core shell inwall, correspondingly, in institute
Two and the groove phase are symmetrically arranged with along its length on the side wall for stating internal thread axle sleeve and the movable chaste tree wheel of the triangle
The fin of matching, described positioning joint one end is provided with two fins, in the groove for being connected in the pen core shell inwall, the other end
Screw thread is provided with, for fixing medicine bottle.
Further, reach is no longer than the length of the internal thread axle sleeve on the push rod.
Further, reach is 3~5mm on the push rod.
Further, the pitch of screw thread is 0.5~1.5mm, accordingly, the interior spiral shell of the internal thread axle sleeve on the push rod
Line pitch is 0.5~1.5mm.
Further, the spring is in initially compressive state.
In summary, due to using above-mentioned technical proposal, the beneficial effects of the invention are as follows：
1st, the present invention is using rotation exhaust, the method for direct injection, but the two is directly carried out on push rod, so may be used
To cause exhaust more accurate, inject simpler.
2nd, the movable chaste tree wheel of internal triangle, can allow people to obtain feedback acoustically when in use, it is to avoid to misprint waste medicine
Liquid.
3rd, the parts in the present invention are fairly simple, it is easy to process.Fit on is also fairly simple.Can be from economic benefit
Reduce cost.
4th, compact structure of the present invention, it is easy to carry.Convenience is brought for user, while it is hidden to be also beneficial to protection patient
It is private.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is sectional views of the Fig. 1 along A-A directions；
Fig. 3 is the structural representation of push rod of the present invention；
Fig. 4 is the structural representation of the movable chaste tree wheel of triangle of the present invention；
Fig. 5 is the structural representation of pen core shell of the present invention；
Fig. 6 is positioning joint structural representation of the present invention.
Marked in figure：1st, push rod；2nd, internal thread axle sleeve；3rd, the movable chaste tree wheel of triangle；4th, pen core shell；5th, spring；6th, it is spacing to connect
Head.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of injection pen, including pen core shell 4, through the push rod 1 of the pen core shell 4, it is arranged at the pen
The movable chaste tree wheel 3 of internal thread axle sleeve 2, triangle, spring 5 and the positioning joint 6 for being connected in the lower end of pen core shell 4 inside core shell 4,
The screw thread of certain length is provided with the push rod 1, and terminates place in screw thread and is provided with chaste tree pawl；The internal thread axle sleeve 2
Spiral is fixed on the push rod 1 at screw thread；The movable chaste tree wheel 3 of the triangle is nested on the push rod 1, and on the push rod 1
Chaste tree pawl is meshed；Two grooves are provided with along its length in the inwall of pen core shell 4, correspondingly, in the internal thread axle sleeve 2
The fin for being symmetrically arranged with two and the groove match on 3 side wall along its length is taken turns with the movable chaste tree of the triangle,
One is that can guarantee that the interior movable chaste tree wheel 3 of the threaded sleeve 2 and the triangle during rotation exhaust of push rod 1 relative will not turn
Dynamic, two make the threaded sleeve 2 and the movable chaste tree wheel 3 of the triangle be moved up and down in injection process along groove for track.
The spring 5 is nested on the push rod 1, and its one end is abutted against with the movable chaste tree wheel 3 of the triangle, the other end and institute
Positioning joint 6 is stated to abut against；The positioning joint 6 is socketed on the push rod 1, and its one end is provided with two fins, is connected in
In the groove of the inwall of pen core shell 4, the other end is provided with screw thread, for fixing medicine bottle.
Reach and the length of the internal thread axle sleeve 2 are 4mm on the push rod 1.
The pitch of screw thread is 1mm on the push rod 1, accordingly, and the internal thread pitch of the internal thread axle sleeve 2 is 1mm.
The spring 5 is in initially compressive state, ensures that the movable chaste tree wheel 3 of triangle is closely nibbled all the time with chaste tree pawl on the push rod 1
Close.
Embodiment：
(1) pitch of threaded portion is 1mm on design push rod 1, and reach is each on 4mm, triangle activity chaste tree wheel 3
The angle of the circumference rotation of rake tooth is 10.44 °, and (the minimum capacity for ensureing each scale is 1 μ l.)
(2), can, when in use, first by push rod 1 to 104.4 ° of anticlockwise (ten scales i.e. on the movable chaste tree wheel 3 of triangle)
Mark is carried out on shell, it is ensured that the accuracy of exhaust.If being vented no emptying, multiple rotary exhaust can be continued, triangle is lived
Dynamic chaste tree wheel 3 can make exhaust feedback device, and rotation sends sound prompting.
(3) after, exhaust terminates, directly down by push rod 1, realize and directly promote injection.Now the movable chaste tree of triangle takes turns 3 also
It can be moved downward along the inboard wall groove of pen core shell 1.Due to the effect of positioning joint 6, it is ensured that injection volume.
(4), after injection terminates, push rod can the resilience in the presence of spring 5, push rod 1 is then reversely rotated again (by three
Activity chaste tree wheel in angle 3 retracts initial injection position) to original position.
The specific embodiment of the present invention is the foregoing is only, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements done etc. should be included in the scope of the protection.
Claims (5)
1. a kind of injection pen, including pen core shell, it is characterised in that：Also include the push rod through the pen core shell, be arranged at described
The movable chaste tree wheel of internal thread axle sleeve, triangle, spring and the positioning joint for being connected in the pen core shell lower end inside pen core shell, it is described
The screw thread of certain length is provided with push rod, and terminates place in screw thread and is provided with chaste tree pawl；The internal thread axle sleeve spiral is consolidated
Due on the push rod at screw thread；The movable chaste tree wheel of the triangle is nested on the push rod, is meshed with chaste tree pawl on the push rod；
The spring is nested on the push rod, and its one end is abutted against with the movable chaste tree wheel of the triangle, the other end and the positioning joint
Abut against；The positioning joint is socketed on the push rod, and two grooves are provided with along its length in the pen core shell inwall,
Correspondingly, be symmetrically arranged with along its length on the side wall of the movable chaste tree wheel of the internal thread axle sleeve and the triangle two with
The fin of the groove match, described positioning joint one end is provided with two fins, is connected in the recessed of the pen core shell inwall
In groove, the other end is provided with screw thread, for fixing medicine bottle.
2. a kind of injection pen according to claim 1, it is characterised in that：Reach is no longer than in described on the push rod
The length of threaded sleeve.
3. a kind of injection pen according to claim 2, it is characterised in that：Reach is 3~5mm on the push rod.
4. a kind of injection pen according to claim 1 or 2, it is characterised in that：On the push rod pitch of screw thread be 0.5~
1.5mm, accordingly, the internal thread pitch of the internal thread axle sleeve is 0.5~1.5mm.
5. a kind of injection pen according to claim 1, it is characterised in that：The spring is in initially compressive state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841563.3A CN104474609B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410841563.3A CN104474609B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104474609A CN104474609A (en) | 2015-04-01 |
| CN104474609B true CN104474609B (en) | 2017-07-25 |
Family
ID=52749299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410841563.3A Active CN104474609B (en) | 2014-12-30 | 2014-12-30 | A kind of injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104474609B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107158521B (en) * | 2017-06-26 | 2023-07-18 | 江苏德尔福医疗器械有限公司 | Fixed exhaust and reusable quantitative injection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225023A (en) * | 1996-07-05 | 1999-08-04 | 诺沃挪第克公司 | Dose setting device |
| CN101868273A (en) * | 2007-10-02 | 2010-10-20 | 莱蒙德尔有限公司 | External drug pump |
| CN203075370U (en) * | 2013-03-11 | 2013-07-24 | 吴军 | Surgical injector |
| CN203329133U (en) * | 2013-06-27 | 2013-12-11 | 上海中医药大学附属岳阳中西医结合医院 | Precise quantification spiral injector |
| CN204446813U (en) * | 2014-12-30 | 2015-07-08 | 江苏华阳电器有限公司 | A kind of injection pen |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011115345A (en) * | 2009-12-02 | 2011-06-16 | Terumo Corp | Prefilled syringe |
| WO2011073174A1 (en) * | 2009-12-15 | 2011-06-23 | Novartis Ag | Syringe |
| CA3195444A1 (en) * | 2010-06-18 | 2011-12-18 | Becton, Dickinson And Company | Adjustable plunger dose stop |
-
2014
- 2014-12-30 CN CN201410841563.3A patent/CN104474609B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1225023A (en) * | 1996-07-05 | 1999-08-04 | 诺沃挪第克公司 | Dose setting device |
| CN101868273A (en) * | 2007-10-02 | 2010-10-20 | 莱蒙德尔有限公司 | External drug pump |
| CN203075370U (en) * | 2013-03-11 | 2013-07-24 | 吴军 | Surgical injector |
| CN203329133U (en) * | 2013-06-27 | 2013-12-11 | 上海中医药大学附属岳阳中西医结合医院 | Precise quantification spiral injector |
| CN204446813U (en) * | 2014-12-30 | 2015-07-08 | 江苏华阳电器有限公司 | A kind of injection pen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104474609A (en) | 2015-04-01 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190329 Address after: 213000 Zhencen Village, Luoyang Town, Wujin District, Changzhou City, Jiangsu Province Patentee after: JIANGSU DELFU MEDICAL DEVICES CO., LTD. Address before: 213000 8 Cen Cun road, Luoyang Town, Wujin District, Changzhou, Jiangsu Patentee before: Jiangsu Huayang Electrical Appliances Co., Ltd. |