CN209548480U - A kind of pre-filled syringe pen - Google Patents
A kind of pre-filled syringe pen Download PDFInfo
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- CN209548480U CN209548480U CN201821492349.1U CN201821492349U CN209548480U CN 209548480 U CN209548480 U CN 209548480U CN 201821492349 U CN201821492349 U CN 201821492349U CN 209548480 U CN209548480 U CN 209548480U
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- pen
- double wedge
- drive rod
- dosage drum
- pen container
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Abstract
The utility model relates to a kind of pre-filled syringe pens, including pen container and pen cap, the front of pen container is provided with standard cassette medicine bottle, rear portion is equipped with trigger button, the inside ecto-entad of pen container has been sequentially arranged dosage drum, differential bar and drive rod, it is connected between differential bar and drive rod by the sunk key axially arranged, the lateral wall of dosage drum is threadedly coupled with the inner sidewall of pen container and is provided in the rear end of dosage drum clutch, and the both ends of clutch can be connected to single-direction transmission with one end of dosage drum and one end of differential bar respectively；Ram seat is provided between the front end and standard cassette medicine bottle of pen container, drive rod inside is coaxially arranged the push rod that can be rotated together with drive rod, and the front end of the push rod passes through ram seat end and is connected with push jack.The problem of the utility model structure is simple, improves multiple components, improves injection pen administration comfort level, reduces injection resistance, improves injection comfort level, standard clamped bottle can be used as medicine storehouse, use cost is low.
Description
Technical field
The utility model relates to injection pen fields, more particularly to a kind of pre-filled syringe pen.
Background technique
Injection pen is a kind of medical instrument being widely used in clinical treatment, is injected for medicament.
Drug injection mainly uses disposable sterilized injector currently on the market, but its injection process needs to carry out hospital just
It examines and is operated by professional and injected, the not applicable self-management with most of chronic disease patients of operation convenience.Mesh
Preceding purely mechanic injection pen is realizing the screw drive in the accurate assigning process of drug, and clutch transmission is pacified in the structures such as touch feedback
Full reliability is optimal.
Injection pen poor universality at present, medicine storehouse are all that can only be matched one by one using the size to match, and inject
The comfort level of pen administration is general, and the resistance ratios of injection are larger.
Medicine capacity easily disengages with pen cap and injection pen is caused to fall apart when injection pen falls to ground, and service life is not
It is high.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of pre-filled syringe pens, and structure is simple, improve more
A component improves the problem of comfort level is administered in injection pen, reduces injection resistance, improve injection comfort level, mark can be used
For quasi- clamped bottle as medicine storehouse, use cost is low.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of pre-filled syringe pen is provided, including
Pen container and pen cap, the front of the pen container are provided with standard cassette medicine bottle, and rear portion is equipped with trigger button, the pen container
Internal ecto-entad has been sequentially arranged dosage drum, differential bar and drive rod, passes through axial direction between the differential bar and drive rod
The sunk key of arrangement connects, and the lateral wall of the dosage drum is threadedly coupled with the inner sidewall of pen container and is arranged in the rear end of dosage drum
There is clutch, the both ends of the clutch can be connected to single-direction transmission with one end of dosage drum and one end of differential bar respectively
Dynamic, the clutch is connected with trigger button；
Ram seat, coaxial cloth inside the drive rod are provided between the front end and standard cassette medicine bottle of the pen container
Be equipped with the push rod that can be rotated together with drive rod, the front end of the push rod pass through ram seat and be threadedly engaged with ram seat and end with
Push jack is connected, and can be connected to single-direction transmission between one end and ram seat of the drive rod.
As a kind of supplement to technical solution described in the utility model, uniform cloth on the lateral wall of the differential bar
Several segmentation spiral salients are equipped with, the stop collar matched with segmentation spiral salient, institute are socketed on the outside of the differential bar
The anti-rotation raised line being engaged with stop collar is axially provided on the inner sidewall for the dosage drum stated.
Further, the inclined-plane for extending to end and equal around circumference is provided on the rear end lateral wall of the dosage drum
It is even to be disposed with several antiskid grooves, a first unidirectional double wedge of circle is provided on the rear inside wall of the dosage drum, it is described
The first unidirectional double wedge below axial end face on be provided with a circle axial direction double wedge.
Further, the second unidirectional double wedge is provided on the rear inside wall of the differential bar, the differential bar
Rear side is provided with one end step, is provided with several on a step side end face facing forward and mutually nibbles with the axial double wedge in dosage drum
The ridge shape double wedge of conjunction.
Further, the clutch includes the newel being inserted into trigger button, the top of the newel
The ball bumps withstood with trigger button are provided with, are provided with isolation board in the middle part of the newel, above and below the isolation board
Center symmetric setting has the first arc spring lamination and the second arc spring lamination, the first arc bullet respectively on the outside of the newel of two sides
The end of piece and the second arc spring lamination is respectively disposed with the unidirectional ratchet matched with the first unidirectional double wedge and the second unidirectional double wedge.
Further, a unidirectional double wedge of circle third, the transmission are provided on the inside top wall of the ram seat
The front end outer side wall of bar is arranged symmetrically the third arc spring lamination and corresponding unidirectional ratchet to match with the unidirectional double wedge of third.
Further, the pen cap is socketed in the front end of pen container, and the inside of the pen cap is arranged around even circumferential
The shaft orientation reinforcing rib for thering are several to clamp standard cassette medicine bottle.
The utility model has the advantages that structure is simple the utility model relates to a kind of pre-filled syringe pen, by medicine storehouse, ram seat,
Push jack, the improvement of push rod solve the applicability requirement to standard clamped bottle, and standard clamped bottle can be used as medicine storehouse, use
At low cost, overall structure is more compact, assembles more convenient；The high reliablity of differential bar and stop collar transmission displacement, lower resistance,
It is designed by using the mode of segmented thread, produced moving resistance when rotation is allowed to be preferably minimized；Salient point is done on clutch, is cooperated
Using self-lubrication, the high material of wearability reduces injection resistance, end face point contact with button, reduces rub to greatest extent
The problem of wiping, reduce resistance, improving injection pen administration comfort level, reduces injection resistance, improves injection comfort level；It improves
Safety issue under the conditions of surprisingly falling, protects clamped bottle (drug) not damage, injection pen not spallation.
Detailed description of the invention
Fig. 1 is the half-sectional structure chart of main view of the utility model；
Fig. 2 is the half-sectional structure chart of side view of the utility model；
Fig. 3 is the three-dimensional structure diagram of the differential bar of the utility model；
Fig. 4 is the main structure figure of the differential bar of the utility model；
Fig. 5 is the three-dimensional structure diagram of the clutch of the utility model；
Fig. 6 is the half-sectional structure chart of main view of the clutch of the utility model；
Fig. 7 is the three-dimensional structure diagram of the dosage drum of the utility model；
Fig. 8 is the half-sectional structure chart of main view of the dosage drum of the utility model；
Fig. 9 is the half-sectional structure chart in part of the utility model.
Diagram: 1, pen container；2, pen cap；3, standard cassette medicine bottle；4, push rod；5, stop collar；6, push jack；7, clutch；8,
Trigger button；9, dosage drum；10, differential bar；11, drive rod；12, ram seat；13, shaft orientation reinforcing rib；14, it is segmented spiral prominence
It rises；15, the second unidirectional double wedge；16, ridge shape double wedge；71, newel；72, ball bumps；74, unidirectional ratchet；75, isolation board；
76, the second arc spring lamination；77, the first arc spring lamination；91, antiskid groove；92, axial double wedge；93, the first unidirectional double wedge；94, prevent
Turn raised line；95, third arc spring lamination；96, the unidirectional double wedge of third.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
As shown in figs 1-9, the technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of pre-filled
Injection pen, including pen container 1 and pen cap 2, the front of the pen container 1 are provided with standard cassette medicine bottle 3, rear portion be equipped with triggering by
Button 8, the inside ecto-entad of the pen container 1 have been sequentially arranged dosage drum 9, differential bar 10 and drive rod 11, the differential
Pass through the sunk key connection axially arranged, the lateral wall of the dosage drum 9 and the inner sidewall of pen container 1 between bar 10 and drive rod 11
It is threadedly coupled and is provided with clutch 7 in the rear end of dosage drum 9, the both ends of the clutch 7 one end with dosage drum 9 respectively
And one end of differential bar 10 can be connected to single-direction transmission, the clutch 7 is connected with trigger button 8；
Ram seat 12 is provided between the front end and standard cassette medicine bottle 3 of the pen container 1, inside the drive rod 11
Coaxially arranged have a push rod 4 that can be rotated together with drive rod 11, the front end of the push rod 4 pass through ram seat 12 and with 12 spiral shell of ram seat
Line cooperates and end is connected with push jack 6, can be connected to single-direction transmission between one end and ram seat 12 of the drive rod 11
It is dynamic.
Several segmentation spiral salients 14 have been evenly arranged on the lateral wall of the differential bar 10, the differential bar 10
Outside is socketed with the stop collar 5 matched with segmentation spiral salient 14, is axially provided on the inner sidewall of the dosage drum 9
The anti-rotation raised line 94 being engaged with stop collar 5.
The inclined-plane for extending to end is provided on the rear end lateral wall of the dosage drum 9 and is disposed with around even circumferential
Several antiskid grooves 91, are provided with a first unidirectional double wedge 93 of circle on the rear inside wall of the dosage drum 9, and described
A circle axial direction double wedge 92 is provided on the axial end face of one unidirectional 93 lower section of double wedge.
The second unidirectional double wedge 15 is provided on the rear inside wall of the differential bar 10, after the differential bar 10
Side is provided with one end step, which is provided with several and 92 phase of axial double wedge in dosage drum 9 on a side end face facing forward
The ridge shape double wedge 16 of engagement.
The clutch 7 includes the newel 71 being inserted into trigger button 8, and the top of the newel 71 is set
The ball bumps 72 withstood with trigger button 8 are equipped with, the middle part of the newel 71 is provided with isolation board 75, the isolation board 75
Center symmetric setting has the first arc spring lamination 77 and the second arc spring lamination 76 respectively the outsides of newel 71 of two sides up and down, it is described
The first arc spring lamination 77 and the second arc spring lamination 76 end be respectively disposed with it is unidirectional convex with the first unidirectional double wedge 93 and second
The unidirectional ratchet 74 that tooth 15 matches.
The unidirectional double wedge 96 of a circle third is provided on the inside top wall of the ram seat 12, the drive rod 11
Front end outer side wall is arranged symmetrically the third arc spring lamination 95 and corresponding unidirectional ratchet 74 to match with the unidirectional double wedge 96 of third.
The pen cap 2 is socketed in the front end of pen container 1, and the inside of the pen cap 2 is disposed with several around even circumferential
A shaft orientation reinforcing rib 13 for clamping standard cassette medicine bottle 3.
As an embodiment of the present invention:
When use, when implementing dosage setting, dosage drum 9 is rotated in the forward direction, the unidirectional double wedge 93 of first in dosage drum 9 is made
With on the first arc spring lamination 77 of 7 front end of clutch, clutch 7 does not rotate, and generates to the i.e. rear end at one end of trigger button 8
Axial displacement, clutch 7 is displaced to withstand on differential bar 10 and trigger button 8 axially rearward and also be displaced axially rearward, drive rod
11 connect with 10 keyway arrangements of differential bar, and the second arc spring lamination 76 of 7 rear end of clutch can not drive differential bar 10 to rotate, poor
Fast bar 10 does not turn, and clutch 7 does not also rotate, while dosage drum 9 ejects pen with trigger button 8 and differential bar 10 to the back-end together
Cylinder 1 completes metering setting.
When implementing dosage readjustment, dosage drum 9 is reversely rotated, the unidirectional double wedge 93 of the first of dosage drum 9 passes through the first arc bullet
Piece 77 drives clutch 7 to rotate, and drug container or drug injection need injection force to be used to push jack 6 and the reaction force of push rod 4
It is anti-between the second arc spring lamination 76 of 7 rear end of clutch and the second unidirectional double wedge 15 of differential bar 10 when balancing out readjustment dosage
To rotating friction force, drive rod 11 connect and will not relatively rotate with 10 keyway of differential bar, and drive rod 11 does not also rotate, will not band
Dynamic ram seat rotation is cancelled completely so that push rod 4 generates displacement axially forward.Dosage drum 9 is moved axially forward, drives
Trigger button 8 and differential bar 10 move forward, and realize readjustment dosage.
When implementing injection, trigger button 8 is pressed, dosage drum 9 is pressed moved axially forward, is rotated backward, dosage
The unidirectional double wedge 93 of the first of cylinder 9 drives clutch 7 to rotate, the second arc spring lamination 76 that at this moment clutch 7 and differential bar 10 cooperate
It cannot be driven, but be pressed, so that the ridge shape double wedge 16 of 10 one end of differential bar is nibbled with 92 phase of axial double wedge in dosage drum 9
It closes, so that the rotation of dosage drum 9 drives differential bar 10 to rotate backward, causes drive rod 11 to rotate, the third of 11 one end of drive rod
Arc spring lamination 95 is engaged with the unidirectional double wedge 96 of the third of ram seat 12, and push rod 4 also rotates backward at this time, while in ram seat 12
Thread matching structure between 4 outer wall of wall and push rod drives 4 axial advancement of push rod, withstands push jack 6 and is injected, agent after having injected
Graduated cylinder 9 and trigger button 8 and differential bar 10 return in pen container 1.
One side injection of every completion is moved axially since differential bar 10 is rotated so will drive stop collar 5,
Until being moved to rear end, thus all injection is over the drug in description standard cassette medicine bottle 3, is not available.
The problem of the utility model structure is simple, improves multiple components, improves injection pen administration comfort level, reduces
Resistance is injected, injection comfort level is improved, standard clamped bottle can be used as medicine storehouse, use cost is low.
Claims (7)
1. a kind of pre-filled syringe pen, including pen container (1) and pen cap (2), which is characterized in that the front of the pen container (1) is set
It is equipped with standard cassette medicine bottle (3), rear portion is equipped with trigger button (8), and the inside ecto-entad of the pen container (1) is sequentially arranged
There are dosage drum (9), differential bar (10) and drive rod (11), passes through axial cloth between the differential bar (10) and drive rod (11)
The sunk key connection set, the lateral wall of the dosage drum (9) are threadedly coupled and after dosage drum (9) with the inner sidewall of pen container (1)
Be provided in end clutch (7), the both ends of the clutch (7) respectively with one end of dosage drum (9) and differential bar (10)
One end can be connected to single-direction transmission, the clutch (7) is connected with trigger button (8)；
It is provided with ram seat (12) between the front end and standard cassette medicine bottle (3) of the pen container (1), the drive rod (11)
Inside is coaxially arranged to be had and can pass through ram seat (12) simultaneously with the push rod (4) that drive rod (11) rotate together, the front end of the push rod (4)
Be threadedly engaged with ram seat (12) and end be connected with push jack (6), one end of the drive rod (11) and ram seat (12) it
Between can be connected to single-direction transmission.
2. pre-filled syringe pen according to claim 1, it is characterised in that: on the lateral wall of the differential bar (10)
It is even to be disposed with several segmentation spiral salients (14), it is socketed on the outside of the differential bar (10) and segmentation spiral salient (14) phase
The stop collar (5) of cooperation is axially provided with the anti-rotation raised line being engaged with stop collar (5) on the inner sidewall of the dosage drum (9)
(94)。
3. pre-filled syringe pen according to claim 1, it is characterised in that: the rear end lateral wall of the dosage drum (9)
On be provided with the inclined-plane for extending to end and be disposed with several antiskid grooves (91), the dosage drum around even circumferential
(9) a first unidirectional double wedge (93) of circle, the axial direction below the unidirectional double wedge of described first (93) are provided on rear inside wall
A circle axial direction double wedge (92) is provided on end face.
4. pre-filled syringe pen according to claim 3, it is characterised in that: the rear inside wall of the differential bar (10)
On be provided with the second unidirectional double wedge (15), be provided with one end step on rear side of the differential bar (10), the step it is facing forward one
Several ridge shape double wedges (16) being meshed with the axial double wedge (92) on dosage drum (9) are provided on side end face.
5. pre-filled syringe pen according to claim 4, it is characterised in that: the clutch (7) includes being inserted into touching
Send out the newel (71) in button (8), be provided at the top of the newel (71) withstood with trigger button (8) it is spherical convex
It rises (72), is provided with isolation board (75) in the middle part of the newel (71), the newel of the two sides up and down of the isolation board (75)
(71) center symmetric setting has the first arc spring lamination (77) and the second arc spring lamination (76), the first arc bullet respectively in outside
The end of piece (77) and the second arc spring lamination (76) is respectively disposed with and the first unidirectional double wedge (93) and the second unidirectional double wedge (15)
The unidirectional ratchet (74) matched.
6. pre-filled syringe pen according to claim 5, it is characterised in that: the inside top wall of the ram seat (12)
On be provided with a unidirectional double wedge of circle third (96), the front end outer side wall of the drive rod (11) has been arranged symmetrically unidirectional with third
The third arc spring lamination (95) and corresponding unidirectional ratchet (74) that double wedge (96) matches.
7. pre-filled syringe pen according to claim 1, it is characterised in that: the pen cap (2) is socketed in pen container (1)
Front end, the inside of the pen cap (2) are disposed with several around even circumferential and add the axial direction that standard cassette medicine bottle (3) is clamped
Strengthening tendons (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821492349.1U CN209548480U (en) | 2018-09-13 | 2018-09-13 | A kind of pre-filled syringe pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821492349.1U CN209548480U (en) | 2018-09-13 | 2018-09-13 | A kind of pre-filled syringe pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209548480U true CN209548480U (en) | 2019-10-29 |
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ID=68297568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821492349.1U Active CN209548480U (en) | 2018-09-13 | 2018-09-13 | A kind of pre-filled syringe pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209548480U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117224781A (en) * | 2023-09-11 | 2023-12-15 | 上海倍莱弗科技有限公司 | Drug delivery device capable of setting and recalling dose |
-
2018
- 2018-09-13 CN CN201821492349.1U patent/CN209548480U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117224781A (en) * | 2023-09-11 | 2023-12-15 | 上海倍莱弗科技有限公司 | Drug delivery device capable of setting and recalling dose |
| CN117224781B (en) * | 2023-09-11 | 2024-09-10 | 上海倍莱弗科技有限公司 | Drug delivery device capable of setting and recalling dose |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210204 Address after: 703, 7th floor, building 10, new material port, high tech middle first road, Science Park community, Yuehai street, Nanshan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Huimai Intelligent Technology Co.,Ltd. Address before: 710302 No.2, zhaojiabao village, Yuyu Town, Hu County, Xi'an City, Shaanxi Province Patentee before: Geng Xusheng |
|
| TR01 | Transfer of patent right |