CN105477745B - Injection pen capable of adjusting dosage and being repeatedly used for multiple times - Google Patents
Injection pen capable of adjusting dosage and being repeatedly used for multiple times Download PDFInfo
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- CN105477745B CN105477745B CN201510318462.2A CN201510318462A CN105477745B CN 105477745 B CN105477745 B CN 105477745B CN 201510318462 A CN201510318462 A CN 201510318462A CN 105477745 B CN105477745 B CN 105477745B
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Abstract
The invention discloses a dose-adjustable injection pen capable of being repeatedly used for many times, which comprises an external button, a button shaft sleeve, a bidirectional chaste tree wheel, a knob, a dial, an internal thread sleeve, a rotary chaste claw, a rotary shaft rod, a chaste tree wheel, an upper shell, a pen hook, a threaded joint, a clutch chaste tree wheel, a screw rod, a clutch spring, a pen refill support and a lower shell. The invention has the advantages of low product cost, adjustable injection dosage, high injection precision, simple transmission mechanism, small volume, convenient carrying, repeated use and the like, and provides a simple, convenient, precise and quantitative injection mode with low cost for patients.
Description
Technical Field
The invention relates to the fields of medical treatment, cosmetology and other related biotechnology, in particular to a dosage-adjustable injection pen capable of being repeatedly used for many times.
Background
The existing injection techniques are basically divided into two categories: one is a disposable injection needle tube which is conventionally used by medical staff, the injection mode needs to be completed in a hospital under the supervision of the medical staff, and the injection with larger dose is injected into a human body at one time, so that the disposable injection needle tube is suitable for the conventional treatment of patients inside and outside the hospital; the other is a special insulin injection pen imported from abroad, which is specially used for diabetics and has higher price.
For some special patients in clinic, such as diabetes patients, hepatitis patients, etc., insulin, interferon, growth hormone, vaccine, etc. need to be injected, the injection dosage precision requirement is particularly high, and in most cases, patients are required to be injected by themselves. The injection technology can not meet the self-injection requirements of patients with diabetes, hepatitis and the like, and is inconvenient to carry; the insulin injection pen produced abroad has high production cost and high price, and increases the burden of patients.
Disclosure of Invention
The invention aims to: in response to the above-identified problems, a multi-use injection pen with adjustable dosing is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a dose-adjustable injection pen capable of being repeatedly used for many times comprises an external button, a button shaft sleeve, a chaste wheel shaft sleeve, a two-way chaste wheel, a knob, a dial, an internal thread sleeve, a rotary chaste claw, a rotary shaft rod, a chaste wheel disc, an upper shell, a threaded joint, a clutch chaste wheel, a lead screw, a clutch spring, a refill support and a lower shell, wherein one end of the external button is sleeved in the button shaft sleeve, the button spring is sleeved at the joint of the external button and the button shaft sleeve, teeth at the upper part of the two-way chaste wheel are meshed with teeth at the lower part of the chaste wheel shaft sleeve, the button shaft sleeve and the two-way chaste wheel are arranged in the rotary chaste claw, teeth at the lower part of the two-way chaste wheel are meshed with teeth at the lower end inside the rotary chaste claw, the internal thread sleeve is sleeved outside the rotary chaste claw, a spiral thread matched with the rotary chaste claw is arranged in the internal thread sleeve, and installed in the dial, the dial is arranged in the upper shell, and the upper end of the dial is provided with a knob; the rotary shaft rod is arranged in the rotary chaser claw, teeth at the lower part of the rotary shaft rod are matched with teeth at the upper part of the clutch chaser through a refill spring, a chaser wheel disc, a movable chaser wheel, a clutch joint and a clutch spring, the clutch chaser wheel is arranged on the lead screw, the lower end of the lead screw is connected with a piston through a lead screw buckle, the refill support is connected with an upper shell through a threaded joint, the lower shell is sleeved on the refill support, and a perspective window is further arranged on the upper shell.
Furthermore, the lower end of the chaste wheel shaft sleeve is provided with chaste teeth, and the inner wall of the chaste wheel shaft sleeve is provided with clamping groove guide ribs.
Furthermore, two symmetrical clamping grooves are formed in the outer wall of the rotating shaft rod, and the lower end of the rotating shaft rod is provided with chaste teeth.
Furthermore, a clamping groove guide rib is arranged on the inner wall of the bidirectional chaste wheel.
Furthermore, the inner wall of the internal thread sleeve is provided with at least one type of spiral groove, and the lower end of the internal thread sleeve is provided with at least one type of positioning bayonet.
Furthermore, the lower end of the outer wall of the rotating claw is provided with at least one type of spiral groove fixture block, and the lower end face of the rotating claw is provided with 3 claws.
Furthermore, the upper end of the chaste tree is provided with a guide groove with an inclined plane, which is matched with the chaste tree at the lower end of the rotary chaste tree.
Furthermore, an axial positioning groove matched with the guide groove on the outer wall of the clutch joint is formed in the inner wall of the threaded joint.
Furthermore, the inside of clutch joint is equipped with the internal thread that matches with the lead screw, and clutch joint's upper end is equipped with the back-off that matches with the separation and reunion chasis.
Furthermore, the upper end of the clutch chaste wheel is provided with chaste teeth, and the inner hole wall is provided with a clamping block matched with the screw rod clamping groove.
Furthermore, the screw rod is provided with external threads, and the outer wall of the screw rod is provided with two clamping grooves.
Furthermore, the dial is provided with 0-60 spiral scales.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the invention has the advantages of low product cost, adjustable injection dosage, high injection precision, simple transmission mechanism, small volume, portability, reusability and the like, provides a simple, convenient, accurate and quantitative and low-cost injection mode for patients depending on subcutaneous injection for treating diseases for a long time, can repeatedly adjust the forward direction and the reverse direction in the use process, controls the injection dosage more accurately, and is provided with the pen hook on the upper shell, so that the pen-shaped integral appearance is not only convenient to carry, but also is beneficial to protecting the individual privacy of the patients.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of an exploded structure of the present invention;
FIG. 2 is a schematic view of the final assembly of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2;
FIG. 4 is an enlarged view of the structure at B in FIG. 2;
FIG. 5 is an enlarged view of the structure at C of FIG. 2;
FIG. 6 is an enlarged schematic view of the structure at D of FIG. 2;
FIG. 7 is a schematic structural view of a cartridge button actuator of the present invention;
FIG. 8 is a schematic structural view of a fifth wheel and rotary pawl transmission mechanism of the present invention;
FIG. 9 is a schematic structural view of the internally threaded transmission of the present invention;
FIG. 10 is a schematic view of the structure of the rotating shaft and wheel transmission mechanism of the present invention;
FIG. 11 is a schematic structural view of a refill clutch mechanism of the present invention;
shown in the figure: 1. the pen comprises an external button, 2 parts of a button spring, 3 parts of a button shaft sleeve, 4 parts of a chaste tree shaft sleeve, 5 parts of a bidirectional chaste tree wheel, 6 parts of a knob, 7 parts of a dial, 8 parts of an internal thread sleeve, 9 parts of a rotary chaste tree claw, 10 parts of a rotary shaft lever, 11 parts of a cartridge spring, 12 parts of a chaste tree wheel, 13 parts of a movable chaste tree wheel, 14 parts of a perspective window, 15 parts of an upper shell, 16 parts of a pen hook, 17 parts of a decorative ring, 18 parts of a threaded joint, 19 parts of a clutch joint, 20 parts of a clutch spring, 21 parts of a clutch chaste tree wheel, 22 parts of a lead screw, 23 parts of a lead screw buckle, 24 parts of a piston, 25 parts of a snap bottle, 26 parts of a rubber plug, 27 parts of a cartridge support and 28 parts of a lower shell.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
As shown in fig. 1 to 11, a dosage-adjustable injection pen for repeated use for multiple times comprises an external button 1, a button shaft sleeve 3, a bidirectional chaste tree 5, a knob 6, a dial 7, an internal thread sleeve 8, a rotary chaste claw 9, a rotary shaft lever 10, a chaste tree disc 12, an upper shell 15, a threaded joint 18, a clutch joint 19, a clutch chaste tree 21, a lead screw 22, a clutch spring 20, a cartridge holder 27 and a lower shell 28, wherein one end of the external button 1 is sleeved in the button shaft sleeve 3, a button spring 2 is sleeved at the connection part of the external button 1 and the button shaft sleeve 3, teeth at the upper part of the bidirectional chaste tree 5 are meshed with teeth at the lower part of the chaste tree shaft sleeve 4, and a clamping groove guide rib is arranged on the inner wall of the bidirectional chaste tree 5; the chaste tree wheel shaft sleeve 4, the button shaft sleeve 3 and the bidirectional chaste tree wheel 5 are arranged in the rotary chaste tree claw 9, a chaste tree tooth surface is arranged at the lower end of the chaste tree wheel shaft sleeve 4, a clamping groove guide rib is arranged on the inner wall of the chaste tree wheel shaft sleeve 4, and the chaste tree wheel shaft sleeve 4 is matched with clamping grooves in two walls of the rotary shaft rod 10 and clamping blocks in the inner wall of the movable chaste tree wheel 13 to rotate; the teeth at the lower part of the bidirectional chaste tree wheel 5 are meshed with the teeth at the lower end in the rotary chaste tree 9, an internal thread sleeve 8 is sleeved outside the rotary chaste tree 9, a spiral line matched with the rotary chaste tree 9 is arranged in the internal thread sleeve 8, the spiral line is provided with 2 different specifications, and the lower end of the spiral line is provided with 2 positioning bayonets with different specifications; the internal thread sleeve 8 is arranged in the dial 7, the dial 7 is arranged in the upper shell 15, the upper end of the dial 7 is provided with the knob 6, and the dial 7 is provided with 0-60 spiral scales; the lower end of the outer wall of the rotary claw 9 is provided with a spiral groove fixture block with one specification, and the lower end surface is provided with 3 claws; the rotary shaft lever 10 is arranged in the rotary chaste tree claw 9, teeth at the lower part of the rotary shaft lever 10 are matched with teeth at the upper part of a clutch chaste tree 21 through a refill spring 11, a chaste tree disc 12, a movable chaste tree 13, a clutch joint 19 and a clutch spring 20, and a guide groove with an inclined plane, which is matched with the chaste tree claw at the lower end of the rotary chaste tree claw 9, is arranged at the upper end of the chaste tree disc 12; clutch chaser 21 is installed on lead screw 22, and the lower extreme of lead screw 22 is connected with piston 24 through lead screw buckle 23, be equipped with the external screw thread on the lead screw 22, be equipped with two draw-in grooves on the outer wall, refill support 27 is connected with epitheca 15 through screwed joint 18, is equipped with decorative ring 17 between epitheca 15 and the screwed joint 18, be equipped with axial positioning groove on the inner wall of screwed joint 18 and cooperate with the guide way of clutch joint 19 outer wall, clutch joint 19's inside is equipped with the internal thread with lead screw 22 external screw thread matched with, and clutch joint 19's upper end is equipped with the back-off that matches with clutch chaser 21, inferior valve 28 suit is on refill support 27, still be equipped with perspective window 14 and couple 16 on epitheca 15.
When the invention is used, the lower shell 28 is manually pulled off, the cartridge support 27 is screwed off, the rubber plug of a standard 3mL cassette bottle is removed, so that the liquid medicine is filled into the cartridge support 27, the cartridge support 27 is rotated to be in threaded fit with the lower end of the threaded joint 18 until the cartridge support is not rotated, the teeth at the lower end of the rotating shaft rod 10 are meshed with the teeth at the upper end of the clutch fifth wheel 21 through the matching action of the clutch fifth wheel 21, the clutch spring 20 and the threaded joint 18 (when the cassette bottle is not filled, the cartridge bottle and the clutch spring 20 are separated), and then a special disposable injection needle head is arranged, so that the preparation work is finished.
The knob 6 at the top is rotated clockwise manually, the rotating claw 9 is driven to rotate clockwise at the same time, because the rotating claw 9 is completely matched with the inner thread sleeve 8 through 2 shift points with different specifications (the inner wall is provided with a spiral line with 3 specifications), when the rotating claw 9 rotates, the rotating claw can only rotate and rise according to the spiral line of the inner thread sleeve 8, meanwhile, the dial 7 (on which 0-60 spiral scales are set) also rotates and rises, at the moment, the scale change can be observed through the perspective window 14, if the selected scale is right opposite to the pointer, the selected scale is the injection amount, if the rotating claw exceeds the required scale, the required scale can be recovered as long as the anticlockwise rotation is carried out.
When the knob 6 is rotated, the button shaft sleeve 3, the chaste wheel shaft sleeve 4, the bidirectional chaste wheel 5 and the external button 1 arranged on the button shaft sleeve 3 are installed in the rotary chaste claw 9, and the button spring 2 is not stressed to be in a free state due to the fact that no external pressure exists, the button shaft sleeve 3, the chaste wheel shaft sleeve 4 and the bidirectional chaste wheel 5 are in loose fit, teeth at the lower part of the bidirectional chaste wheel 5 are matched with teeth at the lower end inside the rotary chaste claw 9, and the teeth at the lower part of the chaste wheel shaft sleeve 4 and the teeth at the upper part of the bidirectional chaste wheel 5 are in friction to generate 'snap' sound to form sound feedback to remind a consumer.
During injection, the external button 1 is pressed forcibly, the teeth at the lower end of the chaste tree shaft sleeve 4 are in press fit with the teeth at the upper part of the bidirectional chaste tree 5, the rotating chaste tree claw 9 is forced to rotate anticlockwise and downwards in the internal thread sleeve 8 according to a spiral line, the rotating shaft rod 10 is driven to rotate anticlockwise, the lead screw 22 is forced to rotate anticlockwise and downwards through the combined action of the refill spring 11, the chaste tree wheel disc 12, the movable chaste tree wheel 13, the clutch joint 19 and the clutch chaste tree wheel 21, and therefore the piston 24 is pushed to move downwards to form injection, the maximum injection amount of a single injection is 60u, and the minimum stepping amount is 1 u.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the present invention. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (12)
1. A dose adjustable, multiple reuse injection pen, comprising: comprises an external button, a button shaft sleeve, a chaste tree shaft sleeve, a bidirectional chaste tree, a knob, a dial, an internal thread sleeve, a rotary chaste, a rotary shaft lever, a chaste tree wheel disc, an upper shell, a threaded joint, a clutch chaste tree wheel, a lead screw, a clutch spring, a refill support and a lower shell, wherein one end of the external button is sleeved in the button shaft sleeve, a button spring is sleeved at the joint of the external button and the button shaft sleeve, the teeth at the upper part of the bidirectional chaste wheel are meshed with the teeth at the lower part of the chaste wheel shaft sleeve, the chaste tree shaft sleeve, the button shaft sleeve and the bidirectional chaste tree are arranged in the rotary chaste tree claw, teeth at the lower part of the bidirectional chaste tree are meshed with teeth at the lower end inside the rotary chaste tree claw, an internal thread sleeve is sleeved outside the rotary claw, a spiral line matched with the rotary claw is arranged in the internal thread sleeve, the internal thread sleeve is arranged in the dial, the dial is arranged in the upper shell, and the upper end of the dial is provided with a knob; the rotary shaft rod is arranged in the rotary chaser claw, teeth at the lower part of the rotary shaft rod are matched with teeth at the upper part of the clutch chaser through a refill spring, a chaser wheel disc, a movable chaser wheel, a clutch joint and a clutch spring, the clutch chaser wheel is arranged on the lead screw, the lower end of the lead screw is connected with a piston through a lead screw buckle, the refill support is connected with an upper shell through a threaded joint, the lower shell is sleeved on the refill support, and a perspective window is further arranged on the upper shell.
2. A variable dose multiple reuse injection pen according to claim 1, wherein: the lower end of the chaste tree wheel shaft sleeve is provided with chaste teeth, and the inner wall of the chaste tree wheel shaft sleeve is provided with clamping groove guide ribs.
3. A variable dose multiple reuse injection pen according to claim 1, wherein: the outer wall of the rotating shaft rod is provided with two symmetrical clamping grooves, and the lower end of the rotating shaft rod is provided with a chaste tooth.
4. A variable dose multiple reuse injection pen according to claim 1, wherein: and a clamping groove guide rib is arranged on the inner wall of the bidirectional chaste wheel.
5. A variable dose multiple reuse injection pen according to claim 1, wherein: the inner wall of the internal thread sleeve is provided with at least one type of spiral groove, and the lower end of the internal thread sleeve is provided with at least one type of positioning bayonet.
6. A variable dose multiple reuse injection pen according to claim 1, wherein: the outer wall lower extreme of rotatory pawl is provided with the helicla flute fixture block of at least one specification, is provided with 3 pawls on the lower terminal surface.
7. A variable dose multiple reuse injection pen according to claim 1, wherein: the upper end of the chaste tree is provided with a guide groove with an inclined plane, which is matched with the chaste tree at the lower end of the rotary chaste tree.
8. A variable dose multiple reuse injection pen according to claim 1, wherein: and an axial positioning groove matched with the guide groove on the outer wall of the clutch joint is arranged on the inner wall of the threaded joint.
9. A variable dose multiple reuse injection pen according to claim 1, wherein: the inside of clutch connects is equipped with the internal thread that matches with the lead screw, and the upper end of clutch connects is equipped with the back-off that matches with the separation and reunion chasis.
10. A variable dose multiple reuse injection pen according to claim 1, wherein: the upper end of the clutch chaste wheel is provided with chaste teeth, and the inner hole wall is provided with a clamping block matched with the screw rod clamping groove.
11. A variable dose multiple reuse injection pen according to claim 1, wherein: the screw rod is provided with external threads, and the outer wall of the screw rod is provided with two clamping grooves.
12. A variable dose multiple reuse injection pen according to claim 1, wherein: the dial is provided with 0-60 spiral scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318462.2A CN105477745B (en) | 2015-06-11 | 2015-06-11 | Injection pen capable of adjusting dosage and being repeatedly used for multiple times |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510318462.2A CN105477745B (en) | 2015-06-11 | 2015-06-11 | Injection pen capable of adjusting dosage and being repeatedly used for multiple times |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105477745A CN105477745A (en) | 2016-04-13 |
| CN105477745B true CN105477745B (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510318462.2A Active CN105477745B (en) | 2015-06-11 | 2015-06-11 | Injection pen capable of adjusting dosage and being repeatedly used for multiple times |
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| CN105997290B (en) * | 2016-05-09 | 2017-12-08 | 浙江康瑞器械科技股份有限公司 | One kind divides gear formula continuous syringe |
| CN106039475B (en) * | 2016-05-18 | 2019-08-02 | 苏州鹏烨医疗科技有限公司 | A kind of injection pen |
| CN105944186B (en) * | 2016-05-18 | 2019-08-02 | 苏州鹏烨医疗科技有限公司 | A kind of injection pen |
| 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 |
| CN107308523A (en) * | 2017-08-08 | 2017-11-03 | 甘肃成纪生物药业有限公司 | Finely tune injection pen |
| RU2721930C1 (en) * | 2017-08-08 | 2020-05-25 | Ганьсу Чаньджи Байо-Фармасьютикал Ко., Лтд. | Fine-tunable autoinjector |
| CN110772687A (en) * | 2019-11-08 | 2020-02-11 | 江苏万海医疗器械有限公司 | Disposable injection pen |
| CN111924506B (en) * | 2020-09-01 | 2020-12-29 | 江苏万海医疗器械有限公司 | Prefabricated material conveying device and pusher thereof |
| CN114668930A (en) * | 2022-04-09 | 2022-06-28 | 珺中(常州)科技有限公司 | Button sounding device for liquid injection pen |
| CN115887821B (en) * | 2022-11-01 | 2024-09-27 | 江苏欧凯医疗器械科技有限公司 | Reusable injection pen |
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| JPH11510442A (en) * | 1995-08-10 | 1999-09-14 | ローレンス ペーパー カンパニー | Cutting wheel mechanism with selectively rotatable cutting blade |
| DE10046279A1 (en) * | 2000-09-19 | 2002-04-04 | Disetronic Licensing Ag | Device for the dosed administration of an injectable product |
| EP1645301A1 (en) * | 2004-10-11 | 2006-04-12 | Novo Nordisk A/S | Injection device |
| EP2644218B2 (en) * | 2012-03-30 | 2022-11-02 | Tecpharma Licensing AG | Injection device with dose display and clockwork drive |
| CN203090099U (en) * | 2013-02-22 | 2013-07-31 | 杭州金源生物技术有限公司 | Insulin injection pen |
| CN104491956B (en) * | 2014-12-30 | 2017-03-08 | 江苏德尔福医疗器械有限公司 | A kind of injection pen |
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| CN101829381A (en) * | 2010-04-07 | 2010-09-15 | 邓源基 | Disposable insulin injection pen with adjustable dosage |
| CN103170038A (en) * | 2013-02-22 | 2013-06-26 | 杭州金源生物技术有限公司 | Insulin injection pen |
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| CN105477745A (en) | 2016-04-13 |
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