CN203408307U - Accurate quantitative injection pen - Google Patents
Accurate quantitative injection pen Download PDFInfo
- Publication number
- CN203408307U CN203408307U CN201320109361.0U CN201320109361U CN203408307U CN 203408307 U CN203408307 U CN 203408307U CN 201320109361 U CN201320109361 U CN 201320109361U CN 203408307 U CN203408307 U CN 203408307U
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- dosage
- clutch
- screw rod
- medicinal liquid
- bevel gear
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- Expired - Fee Related
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Abstract
The utility model discloses an accurate quantitative injection pen. A main jacket is in butt joint with a medicament bottle outer jacket; a dosage display screw rod is fixed in the main jacket; a medicament bottle jacket is arranged in the medicament bottle outer jacket; the medicament bottle jacket is in threaded connection with the dosage display screw rod; a bilateral ratchet wheel is arranged on an inner step of the front segment of the dosage display screw rod; the bilateral ratchet is clutch connection with a bilateral movable ratchet wheel; the back segment of the dosage display screw rod is provided with a dosage display nut and a dosage display sleeve; the outer edge of the back end of the dosage display sleeve is fixedly connected with a dosage adjusting knob; a liquid medicament driving sleeve is arranged in the inner cavity of the dosage display screw rod; a liquid medicament driving screw rod is arranged in the inner cavity of the liquid medicament driving sleeve; a polished rod of the liquid medicament driving screw is provided with a clutch fixed end bevel gear; the clutch fixed end bevel gear is in clutch connection with a clutch movable end bevel gear; a button frame is arranged on the back end face of the clutch movable end bevel gear through a ball frame. The accurate quantitative injection pen disclosed by the utility model has higher injection dosage control accuracy, is convenient to carry, and can be used repeatedly.
Description
Technical field
This utility model belongs to medication injections apparatus technical field, for regulating the repeatedly aseptic use operation of injection, is specifically related to a kind of accurate quantification injection pen.
Background technology
Existing injection technique is divided into two kinds substantially: the conventional injection needles pipe using of a kind of medical personnel of being, this injection system need to complete injection in medical personnel's monitoring Xia hospital, be by the disposable human body that is injected into of the injection of larger dose (2ml-5ml), be used in the inside and outside patient's of institute conventional therapy.Another is the special-purpose injection pen of insulin of external import, and specially for diabetics, this injection pen price is higher.
For some especial patients clinically, such as diabetics, hepatitis etc., need insulin injection, interferon auxin, vaccine etc., its injected dose little (0.1ml-1.2ml), it is high especially that but injected dose degree of accuracy requires, and require in most cases patient oneself to inject.And aforesaid injection technique can not meet the patients' such as diabetics, hepatitis the needs of injection voluntarily; The insulin injection pen of rear a kind of external production, production cost is high, and price has increased patient's burden.
Utility model content
The purpose of this utility model is to provide a kind of accurate quantification injection pen, injected dose degree of accuracy while solving prior art injection is inadequate, inconvenient operation, can not meet diabetics, hepatitis and for patients such as human growth hormone, recombination human thymosin and Polyethylene Glycol thymosin, the injection of pegylated protein medicine class, vaccine multiple injection, inject voluntarily the problem of special requirement.
The technical scheme that this utility model adopts is, a kind of accurate quantification injection pen, comprises main sheath, and the front end of main sheath docks with ampoule oversheath; The front end inner circle of main sheath is fixed with dosage and shows screw rod, and ampoule oversheath inner chamber is provided with ampoule sheath;
Described ampoule sheath and dosage show that screw rod leading portion is threaded connection, and in dosage demonstration screw rod leading portion, on step, are provided with bidirectional ratchet, and bidirectional ratchet is connected with the clutch of bi-directional movable ratchet by movable ratchet spring forward; Dosage shows that on the outer step of screw rod back segment, being provided with dosage shows that nut and dosage show cover, dosage shows that nut inner circle and dosage show that the outer round thread of screw rod is in transmission connection, dosage shows that nut cylindrical and dosage show that cover inner circle is fixedly connected with, and dosage shows that the outer, rear end of cover is fixedly connected with adjustment knob;
In the back end circumference of described main sheath, be provided with an observation port;
Described dosage shows that the inner chamber of screw rod is provided with medicinal liquid actuating sleeve, and medicinal liquid actuating sleeve front end is provided with driving head, and bidirectional ratchet is fixedly installed on the periphery of medicinal liquid actuating sleeve; In the rear end of dosage demonstration screw rod, along ratchet sheath is installed, ratchet sheath rear end is provided with bidirectional ratchet pawl, and bidirectional ratchet pawl circumference is provided with bidirectional ratchet;
The inner chamber of described medicinal liquid actuating sleeve is provided with medicinal liquid drive screw, in the intracavity posterior end of medicinal liquid actuating sleeve, edge is fixedly equipped with medicinal liquid drive nut, medicinal liquid drive nut and medicinal liquid drive screw are socketed by screw thread, the polished rod that medicinal liquid drive screw stretches out bidirectional ratchet is partly provided with clutch stiff end bevel gear, between clutch stiff end bevel gear and bidirectional ratchet pawl, be provided with clutch spring, clutch stiff end bevel gear is connected with the clutch of clutch movable end bevel gear, the annulus section rear end face of clutch movable end bevel gear is fixedly connected with ball rack, ball rack is provided with button frame down, in button frame, be provided with button.
The beneficial effects of the utility model are, for depending on for a long time patient's (as diabetes, hepatitis, retardation of growth, vaccine injection etc.) of subcutaneous injection drug treatment disease, injection system voluntarily simple, convenient, accurate quantification is provided, compare with the product of disposable injection, the control of injected dose is more accurate, easy to carry, can reuse (the two prickers that are equipped with in injection pen are used by doctor's advice), patient treatment and use cost are significantly reduced.
Accompanying drawing explanation
Fig. 1 is that this utility model accurate quantification injection pen is at the structural representation of store status;
Fig. 2 is the local enlarged diagram at bidirectional ratchet 20 places in this utility model device;
Fig. 3 is the local enlarged diagram at adjustment knob 1 place in this utility model device;
Fig. 4 is the structural representation of this utility model device state to be injected after completing dosage adjusting;
Fig. 5 is the structural representation of this utility model device after completing whole injecting liquid drugs.
In figure, 1. adjust knob, 2. button, 3. button frame, 4. ball rack, 5. clutch movable end bevel gear, 6. clutch stiff end bevel gear, 7. ball, 8. clutch spring, 9. bidirectional ratchet, 10. bidirectional ratchet pawl, backplate at the bottom of 11. ratchets, 12. medicinal liquid drive nuts, 13. magnifieres, 14. medicinal liquid drive screws, 15. dosage show cover, 16. dosage show nut, 17. dosage show screw rod, 18. medicinal liquid actuating sleeves, 19. driving heads, 20. bidirectional ratchets, 21. movable ratchet springs, 22. bi-directional movable ratchets, 23. ampoule sheaths, 24. ampoule oversheaths, 25. pen hangings, 26. plugs, 27. double-edged spike, 28. main sheaths.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, this utility model is elaborated.
Following description in accurate quantification injection pen is described, the one end at pen hanging 25 places when " front end " direction of description refers to store status when inject state (or for one end of double-edged spike 27 is installed), " rear end " direction refers to the one end at button 2 places.
With reference to Fig. 1, Fig. 2, Fig. 3, the structure of this utility model accurate quantification injection pen is, comprises main sheath 28, and the front end of main sheath 28 docks with ampoule oversheath 24, at the front end of ampoule oversheath 24, is socketed with pen hanging 25; The front end inner circle of main sheath 28 is fixed with dosage and shows screw rod 17, ampoule oversheath 24 inner chambers are provided with ampoule sheath 23, ampoule sheath 23 inner chambers are provided with injection medicament bottle, ampoule intracavity posterior end is provided with plug 26, and during inject state, ampoule sheath 23 bottlenecks are provided with double-edged spike 27;
Dosage shows that the inner chamber of screw rod 17 is provided with medicinal liquid actuating sleeve 18, and medicinal liquid actuating sleeve 18 front ends are provided with driving head 19, and the front end of driving head 19 contacts with plug 26, and during injection, driving head 19 can promote plug 26 sealing slip extruding medicinal liquids; Bidirectional ratchet 20 is fixedly installed on the periphery of medicinal liquid actuating sleeve 18, and in the rear end of dosage demonstration screw rod 17, along ratchet sheath 11 is installed, ratchet sheath 11 rear ends are provided with bidirectional ratchet pawl 10, and bidirectional ratchet pawl 10 circumference are provided with bidirectional ratchet 9;
The observation port (in the side of Fig. 3) that is provided with a show dose numeral in the back end circumference of main sheath 28, this observation port place is provided with a transparent magnifier 13, for dosage being shown to the dosage numeral amplification convenient operation person of cover 15 chapters observes;
The inner chamber of medicinal liquid actuating sleeve 18 is provided with medicinal liquid drive screw 14, in the intracavity posterior end of medicinal liquid actuating sleeve 18, edge is fixedly equipped with medicinal liquid drive nut 12, medicinal liquid drive nut 12 is socketed by screw thread with medicinal liquid drive screw 14, the polished rod that medicinal liquid drive screw 14 stretches out bidirectional ratchet 9 is partly provided with clutch stiff end bevel gear 6, between clutch stiff end bevel gear 6 and bidirectional ratchet pawl 10, be provided with clutch spring 8, clutch stiff end bevel gear 6 adopts clutch mode to be connected with clutch movable end bevel gear 5, the annulus section rear end face of clutch movable end bevel gear 5 is fixedly connected with ball rack 4, in ball rack 4, be provided with ball 7, ball rack 4 is provided with button frame 3 down, button frame 3 can rotate along ball rack 4 by ball 7, in button frame 3, be provided with the button 2 of elastomeric material, between button frame 3 and ball 7, be provided with spacing (being the stroke of button 2), clutch movable end bevel gear 5, ball rack 4 and button frame 3 are co-located among adjustment knob 1 inner chamber, the knob 1 of adjusting shows that with dosage cover 15 screens are connected or are threaded, see Fig. 3.
Dosage shows that nut 16 is fixedly nested in dosage and shows in the bottom of overlapping 15, dosage numeral when the knob 1 of adjusting rotates on dosage demonstration cover 15 shows by the window of main sheath 28, magnifier 13 is nested to be bonded in the observation port of main sheath 28, by convex lens, numeral is amplified, once, the window of main sheath 28 just changes a numeral of demonstration for bidirectional ratchet pawl 10 and the every disengagement of bidirectional ratchet 9.Adjust in addition knob 1 also by the combined effect of clutch movable end bevel gear 5, clutch stiff end bevel gear 6,8 three parts of clutch spring, make medicinal liquid drive screw 14 follow dosage closely and show that cover 15 and dosage show the differential rotation of nut 16, realize fore-and-aft direction position adjustments, realize the accurate control of medicinal liquid drive screw 14.After ampoule sheath 23 is in place and tightens up, movable ratchet spring 21 is compressed, make bi-directional movable ratchet 22 and bidirectional ratchet 20 engagements, force medicinal liquid actuating sleeve 18 to fix and can not rotate at circumferencial direction, then, push away (pressure) button 2, medicinal liquid drive nut 12 together with medicinal liquid drive screw 14 under the effect of external force jointly towards injection direction motion (promotion medicinal liquid).
One bottle of medicine can be injected 2-3 time, after having injected, must take out empty bottle, puts into new medicated core, and completing of this process is to be completed by driving head 19, bidirectional ratchet 20, movable ratchet spring 21 and bi-directional movable ratchet 22.After ampoule sheath 23 unclamps, bi-directional movable ratchet 22 is in free state, so the constraint release of medicinal liquid actuating sleeve 18 circumferencial directions promotes driving head 19 and medicinal liquid actuating sleeve 18, drives medicinal liquid drive nut 12 spinning reductions.
The operating process of this utility model accurate quantification injection pen is:
1) first extract the pen hanging 25 being socketed with medicated core protective sleeve 24, then at the medicament bottleneck of ampoule sheath 23 inner chambers, double-edged spike 27 is installed, be rotated counterclockwise adjustment knob 1, the knob 1 of adjusting is on the one hand controlled 15 rotations of dosage demonstration cover; Adjust on the other hand knob 1 also by the combined effect of clutch movable end bevel gear 5, clutch stiff end bevel gear 6,8 three parts of clutch spring, make medicinal liquid drive screw 14 follow dosage closely and show that cover 15 and dosage show the differential synchronous rotary of nut 16, regulate medicinal liquid injection volume to needed dosage, dosage number by the window of main sheath 28, see that dosage shows that the numeral put shows, correspond to draw back out the distance of medicinal liquid actuating sleeve 18 of medicinal liquid drive screw 14.With reference to Fig. 4;
2) determine after injection volume, the outer needle point of double-edged spike 27 is thrust in the corresponding injection site of skin, hold main sheath 28, push away (pressure) button 2 on one side, so () button frame 3 and ball 7 thereof are pressed clutch movable end bevel gear 5, make clutch spring 8 compressions, separated with clutch stiff end bevel gear 6; Button frame 3 forward end move simultaneously, touch after medicinal liquid drive screw 14, plug 26 in clamped bottle, under the pushing of medicinal liquid drive screw 14, medicinal liquid drive nut 12, medicinal liquid actuating sleeve 18, driving head 19, completes the calibrated shot of medicinal liquid, and dosage shows that cover 15 correlated parts such as grade reset simultaneously.With reference to Fig. 5.
3) bottle liquid medicine can be injected 2-3 time, next time start injection when operation, repeats said process, until after the liquid medicine injection in clamped bottle shoots away, take out empty bottle, manual injection driving head 19 resets it and prepares next round injecting liquid drug.
Claims (4)
1. an accurate quantification injection pen, is characterized in that: comprise main sheath (28), the front end of main sheath (28) docks with ampoule oversheath (24); The front end inner circle of main sheath (28) is fixed with dosage and shows screw rod (17), and ampoule oversheath (24) inner chamber is provided with ampoule sheath (23);
Described ampoule sheath (23) shows that with dosage screw rod (17) leading portion is threaded connection, in dosage demonstration screw rod (17) leading portion, on step, be provided with bidirectional ratchet (20), bidirectional ratchet (20) is connected with bi-directional movable ratchet (22) clutch by movable ratchet spring (21) forward; Dosage shows that on the outer step of screw rod (17) back segment, being provided with dosage shows that nut (16) and dosage show cover (15), dosage shows that nut (16) inner circle and dosage show that the outer round thread of screw rod (17) is in transmission connection, dosage demonstration nut (16) cylindrical and dosage show that cover (15) inner circle is fixedly connected with, and dosage shows that the outer, rear end of cover (15) is fixedly connected with adjustment knob (1);
In the back end circumference of described main sheath (28), be provided with an observation port;
Described dosage shows that the inner chamber of screw rod (17) is provided with medicinal liquid actuating sleeve (18), and medicinal liquid actuating sleeve (18) front end is provided with driving head (19), and bidirectional ratchet (20) is fixedly installed on the periphery of medicinal liquid actuating sleeve (18); In the rear end of dosage demonstration screw rod (17), along ratchet sheath (11) is installed, ratchet sheath (11) rear end is provided with bidirectional ratchet pawl (10), and bidirectional ratchet pawl (10) circumference is provided with bidirectional ratchet (9);
The inner chamber of described medicinal liquid actuating sleeve (18) is provided with medicinal liquid drive screw (14), in the intracavity posterior end of medicinal liquid actuating sleeve (18), edge is fixedly equipped with medicinal liquid drive nut (12), medicinal liquid drive nut (12) is socketed by screw thread with medicinal liquid drive screw (14), the polished rod that medicinal liquid drive screw (14) stretches out bidirectional ratchet (9) is partly provided with clutch stiff end bevel gear (6), between clutch stiff end bevel gear (6) and bidirectional ratchet pawl (10), be provided with clutch spring (8), clutch stiff end bevel gear (6) is connected with clutch movable end bevel gear (5) clutch, the annulus section rear end face of clutch movable end bevel gear (5) is fixedly connected with ball rack (4), ball rack (4) is provided with button frame (3) down, in button frame (3), be provided with button (2).
2. accurate quantification injection pen according to claim 1, is characterized in that: the front end of described ampoule oversheath (24) is socketed with pen hanging (25).
3. accurate quantification injection pen according to claim 1, is characterized in that: described observation port place is provided with a transparent magnifier (13).
4. accurate quantification injection pen according to claim 1, is characterized in that: described adjustment knob (1) shows that with dosage cover (15) screens is connected or is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320109361.0U CN203408307U (en) | 2013-03-11 | 2013-03-11 | Accurate quantitative injection pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320109361.0U CN203408307U (en) | 2013-03-11 | 2013-03-11 | Accurate quantitative injection pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203408307U true CN203408307U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320109361.0U Expired - Fee Related CN203408307U (en) | 2013-03-11 | 2013-03-11 | Accurate quantitative injection pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203408307U (en) |
Cited By (7)
| 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 |
| CN105688314A (en) * | 2016-03-29 | 2016-06-22 | 中国人民解放军军事医学科学院实验仪器厂 | Automatic injection device |
| CN105709308A (en) * | 2015-12-31 | 2016-06-29 | 王超群 | Novel painless botulinum toxin quantitative injector |
| CN105797242A (en) * | 2016-05-10 | 2016-07-27 | 苏州翰尔西医疗器械开发有限公司 | Injector and injection operating method thereof |
| CN106267474A (en) * | 2016-09-27 | 2017-01-04 | 严虎荣 | A kind of injection novopen automatically |
| US11167092B2 (en) | 2015-02-27 | 2021-11-09 | Novo Nordisk A/S | Drug delivery device with dose reset mechanism |
-
2013
- 2013-03-11 CN CN201320109361.0U patent/CN203408307U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11167092B2 (en) | 2015-02-27 | 2021-11-09 | Novo Nordisk A/S | Drug delivery device with dose reset mechanism |
| 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 |
| 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 |
| CN105709308A (en) * | 2015-12-31 | 2016-06-29 | 王超群 | Novel painless botulinum toxin quantitative injector |
| CN105688314A (en) * | 2016-03-29 | 2016-06-22 | 中国人民解放军军事医学科学院实验仪器厂 | Automatic injection device |
| CN105797242A (en) * | 2016-05-10 | 2016-07-27 | 苏州翰尔西医疗器械开发有限公司 | Injector and injection operating method thereof |
| CN106267474A (en) * | 2016-09-27 | 2017-01-04 | 严虎荣 | A kind of injection novopen automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140129 Termination date: 20150311 |
|
| EXPY | Termination of patent right or utility model |