CN218870977U - Pen type injection device and dose setting structure thereof - Google Patents
Pen type injection device and dose setting structure thereof Download PDFInfo
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- CN218870977U CN218870977U CN202221729811.1U CN202221729811U CN218870977U CN 218870977 U CN218870977 U CN 218870977U CN 202221729811 U CN202221729811 U CN 202221729811U CN 218870977 U CN218870977 U CN 218870977U
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Abstract
The utility model relates to the technical field of drug administration and injection, and discloses a pen-type injection device and a dose setting structure thereof, wherein the pen-type injection device comprises a dose setting device which is arranged in the main body of the pen-type injection device and can axially rotate and move in the main body, and one side of the dose setting device is provided with a stop surface arranged towards the circumferential direction of the dose setting device; the scale is spirally arranged along the axial direction of the scale and is fixed on a driving shaft of the pen type injection device, and one end of the scale, facing the stop surface, is provided with a butting surface matched with the stop surface; the trigger is sleeved on the outer side of the scale, one end of the trigger is fixed with the dose setter to drive the dose setter to rotate, and the inner wall surface of the trigger is matched with the outer wall surface of the scale so that the trigger can rotate along the outer wall surface of the scale; the method and the device can accurately control the required dose for each injection, scientifically and quantitatively control and convey for multiple times, and meet the conveying requirement that a customer injects no dose for multiple times.
Description
Technical Field
The utility model relates to an injection technical field that doses especially relates to a pen type injection device and dose setting structure thereof.
Background
At present, a pen-type drug administration injection device is a device which integrates a drug and an injector into a whole and mainly comprises a trigger, a main body, a driving device, a power storage device, a drug cartridge and a needle head. The medicament is stored in a cartridge, typically in conjunction with a particular injection device. When in use, the safety cap is taken down, the disposable injection needle is installed, the air is exhausted, and the medicine delivery is realized by adjusting the required dosage and driving the trigger. At present, the injection amount of the medicine of a conventional injection device is single and fixed, the medicine amount required by each injection cannot be accurately controlled, the medicine cannot be scientifically and quantitatively controlled and conveyed for multiple times, and the conveying requirement of a customer for multiple injections without dosage cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the dose setting structure of the pen type injection device can accurately control the dose required by each injection, scientifically and quantitatively control and convey the dose for multiple times, and meets the conveying requirement of a customer on multiple injections without dose.
In order to achieve the above object, the present invention provides a dose setting structure of a pen type injection device, comprising:
a dose setter disposed in a body of a pen injection device and axially rotatable and movable therein, the dose setter being provided with a stop surface at one side thereof disposed towards a circumferential direction thereof;
the scale is spirally arranged along the axial direction of the scale and is fixed on a driving shaft of the pen type injection device, and one end of the scale facing the stop surface is provided with a butting surface matched with the stop surface;
the trigger is sleeved on the outer side of the scale, one end of the trigger is fixed with the dose setter to drive the dose setter to rotate, and the inner wall surface of the trigger is matched with the outer wall surface of the scale so that the trigger can rotate along the outer wall surface of the scale.
The embodiment of the utility model provides a pen-type injection device's dose setting structure compares with prior art, and its beneficial effect lies in: the dose setter is fixedly connected with the trigger so as to be capable of moving and rotating along with the movement and rotation of the trigger, and one end of the dose setter facing the scale is provided with a stop surface; the scale is arranged in the trigger and is provided with an abutting surface facing the stop surface, and the scale is fixed on the driving shaft and can rotate along with the rotation of the driving shaft; when the medicine delivery amount is set, the trigger is rotated, and the trigger drives the dose setter to rotate, so that the stop surface of the dose setter rotates away from the abutting surface along the axial direction; when the medicine is delivered, the dose setter is fixed, the driving shaft drives the scale to rotate towards the direction of the dose setter, when the abutting surface of the scale abuts against the stop surface again, the scale stops rotating, the driving shaft is driven to stop rotating, and the medicine delivery at this time is finished. The device corresponds the distance between the stop surface and the abutting surface to the amount of the medicine to be injected, so that the injection amount of the medicine is visible at each time, the control of an operator is convenient, the amount of the medicine required by each injection can be accurately controlled, the control and the conveying are scientifically and quantitatively carried for a plurality of times, and the conveying requirement of a client for injecting the medicine for a plurality of times without dosage is met.
The utility model discloses pen type injection device's dose setting structure, the dose setting ware orientation the one end of trigger is provided with the buckle, the trigger orientation the one end of dose setting ware be provided with buckle complex buckle groove.
The utility model discloses pen type injection device's dose setting structure, be provided with a plurality of evenly distributed's buckle on the dose setting ware, also correspond on the trigger the quantity of buckle is provided with a plurality ofly the buckle groove.
The utility model discloses pen type injection device's dose setting structure, the spiral is provided with a plurality of interval distribution's scale on the outer terminal surface of scale, seted up on the trigger with the observation window that the scale position corresponds.
The utility model discloses pen type injection device's dose setting structure, be provided with on the internal face of trigger with the outer peripheral face assorted screw thread rib of scale.
The utility model discloses pen type injection device's dose setting structure, the dose setting ware is dorsad the one end of trigger is provided with finger portion, be provided with on the internal face of main part with finger portion complex spacing groove.
The utility model discloses pen type injection device's dose setting structure, the scale with the outside cover of dose setting ware is equipped with bias spring, bias spring's both sides respectively the butt in the trigger with on the relative terminal surface of main part.
The utility model discloses pen type injection device's dose setting structure, be provided with stop gear on the internal face of scale with will the scale is fixed in on pen type injection device's the drive shaft.
The utility model discloses pen type injection device's dose setting structure, stop gear includes many runs through the inner wall groove of the internal face of scale, inner wall groove with drive epaxial outer rib cooperatees.
The utility model also provides a pen-type injection device, including any one of the above-mentioned embodiments the dose setting structure.
The embodiment of the utility model provides a pen type injection device compares with prior art, and its beneficial effect lies in: the pen type injection device is sequentially provided with a dose setter, a scale and a trigger, wherein the dose setter is fixedly connected with the trigger so as to move and rotate along with the movement and rotation of the trigger, and one end of the dose setter, which faces the scale, is provided with a stop surface; the scale is arranged in the trigger and is provided with an abutting surface facing the stop surface, and the scale is fixed on the driving shaft and can rotate along with the rotation of the driving shaft; when the medicine delivery amount is set, the trigger is rotated, the trigger drives the dose setter to rotate, and the stop surface of the dose setter rotates axially away from the abutting surface; when the medicine is delivered, the dose setter is fixed, the driving shaft drives the scale to rotate towards the direction of the dose setter, when the abutting surface of the scale abuts against the stop surface again, the scale stops rotating, the driving shaft is driven to stop rotating, and the medicine delivery at this time is finished. The device enables the distance between the stop surface and the abutting surface to correspond to the amount of the medicine to be injected, so that the injection amount of the medicine is visible at each time, the control of an operator is facilitated, the amount of the medicine required by each injection can be accurately controlled, the control and the conveying are scientifically and quantitatively carried for multiple times, and the conveying requirement that a customer injects no medicine for multiple times is met.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Figure 1 is a schematic view of a dose setting arrangement of a pen injection device according to an embodiment of the present invention;
figure 2 is an external schematic view of a dose setting arrangement of a pen-type injection device according to an embodiment of the present invention;
figure 3 is a schematic view of a body-removed dose setting mechanism of a pen injector device according to an embodiment of the present invention;
figure 4 is a schematic view of a dose setter of a dose setting arrangement of a pen injector device according to an embodiment of the invention;
figure 5 is a schematic view of the dial of the dose setting arrangement of the pen injector device according to an embodiment of the present invention;
figure 6 is a schematic view of the trigger of the dose setting arrangement of the pen injection device according to an embodiment of the present invention;
figure 7 is an internal schematic view of the body of the dose setting structure of a pen injection device according to an embodiment of the present invention;
in the figures, 1, dose setter; 11. a stop surface; 12. buckling; 13. a finger portion; 2. a scale; 21. an abutting surface; 22. calibration; 23. an inner wall groove; 3. a trigger; 31. a fastening groove; 32. a threaded rib; 33. an observation window; 4. a biasing spring; 5. a main body; 51. a limiting groove; 6. a drive shaft; 61. and an outer rib.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, 2 and 3, a dose setting structure of a pen type injection device according to a preferred embodiment of the present invention mainly includes a dose setter 1, a scale 2 and a trigger 3, wherein the dose setter 1, the scale 2 and the trigger 3 are sequentially arranged on the pen type injection device.
Wherein, the dose setter 1 is arranged in the body 5 of the pen type injection device, the inner diameter of the body 5 is larger than the outer diameter of the dose setter 1 so that it can rotate and move in the body 5 along its axial direction, one side of the dose setter 1 is provided with a stop surface 11 arranged towards its circumferential outer side; the scale 2 is arranged at one side of the stop surface 11 of the dose setting device 1, the outer wall surface of the scale 2 is spirally arranged along the axial direction, the inner wall surface of the scale 2 is fixed on the driving shaft of the pen type injection device and can rotate along with the rotation of the driving shaft 6, one end of the scale 2 facing the stop surface 11 is provided with an abutting surface 21 matched with the stop surface 11, and the abutting surface 21 is arranged towards the circumferential direction of the scale 2;
the utility model discloses in pen-type injection device's dose setting structure of preferred embodiment, 3 suit of triggers in the outside of scale 2, the one end of trigger 3 is fixed with dose setting ware 1 and rotates with drive dose setting ware 1, and the internal face of trigger 3 cooperatees with the outer wall of scale 2 for trigger 3 can rotate along the outer wall of scale 2. When the medicine delivery amount is set, the trigger 3 is rotated, the trigger 3 drives the dose setting device 1 to rotate, and the stop surface 11 of the dose setting device 1 is enabled to rotate along the axial direction to be separated from the abutting surface 21; when the dose setting device 1 is fixed and the drive shaft 6 rotates the scale 2 in the direction of the dose setting device 1, the dose setting device starts to deliver the dose, and when the abutment surface 21 of the scale 2 abuts the stop surface 11 again, the scale 2 stops rotating and the drive shaft 6 also stops rotating, thereby completing the delivery of the dose.
As shown in fig. 1, 4 and 6, in some embodiments of the present invention, the end of the dose setter 1 facing the trigger 3 is provided with a catch 12, the end of the trigger 3 facing the dose setter 1 is provided with a catch groove 31 cooperating with the catch 12, the cooperation of the catch 12 and the catch groove 31 enables the trigger 3 and the dose setter 1 to be configured to rotate and move in synchronism, the distance between the stop surface 11 of the dose setter 1 and the abutment surface 21 of the scale 2 being settable when the trigger 3 is rotated. The device is firm in fixation and not easy to fall off, so that the device is more stable and reliable.
As shown in fig. 1, 4 and 6, in some embodiments of the present invention, a plurality of evenly distributed buckles 12 are provided on the dose setter 1, and a plurality of buckle grooves 31 are provided on the trigger 3 corresponding to the number of the buckles 12. The provision of the plurality of catches 12 and catch recesses 31 allows the dose setter 1 and trigger 3 to be fixed at multiple points, further enhancing the direct fixation of the two and further enhancing the stability of the device.
As shown in fig. 5 and 6, in some embodiments of the present invention, the outer end surface of the scale 2 is spirally provided with a plurality of scales 22 distributed at intervals, and the trigger 3 is provided with an observation window 33 corresponding to the scales 22, so that a user can conveniently check the reading on the scale 2 when rotating the trigger 3 to accurately grasp the amount of the medicine required by the injection.
As shown in fig. 6, in some embodiments of the present invention, the inner wall surface of the trigger 3 is provided with a thread rib 32 matched with the outer peripheral surface of the scale 2, and the thread rib 32 avoids the clearance movement between the threads along the outside of the scale 2 during the rotation, thereby preventing the scale 2 from being driven to rotate and affecting the precision of the scale 2.
As shown in fig. 4 and 7, in some embodiments of the present invention, the end of the dose setting device 1 facing away from the trigger 3 is provided with a finger portion 13, the inner wall surface of the main body 5 is provided with a limiting groove 51 engaged with the finger portion 13, and the limiting groove 51 is U-shaped. Injection device gets into the medicine injection stage when trigger 3 presses, and finger portion 13 gets into spacing groove 51 when trigger 3 presses, and finger portion 13 and spacing groove 51's cooperation has restricted dose setting device 1's rotation and the axial displacement of scale 2 dorsad, makes medicine injection in-process dose setting device 1 obtain fixedly, has guaranteed the accurate of scale 2 rotation stroke, makes the injection volume of demarcating the medicine accurate reliable.
As shown in fig. 1, 2 and 3, in some embodiments of the present invention, the scale 2 and the dose setting device 1 are sleeved with a biasing spring 4, two sides of the biasing spring 4 abut against the opposite end surfaces of the trigger 3 and the main body 5 respectively, the biasing spring 4 is compressed during the injection process, the trigger 3 is released after the injection is completed, the biasing spring 4 is released to push the trigger 3 to return to the original position, the trigger 3 drives the dose setting device 1 to return to the original position, and the dose setting device 1 pushes the scale 2 to return to the original position.
In some embodiments of the present invention, a limiting mechanism is provided on the inner wall surface of the scale 2 to fix the scale 2 to the drive shaft 6 of the pen-type injection device, and the setting of the limiting mechanism enables the scale 2 to rotate together with the drive shaft 6, and the limiting mechanism is fixed firmly during the rotation process, so as to limit the rotation stroke of the drive shaft 6 within the distance between the scale 2 and the dose setting device 1.
As shown in fig. 1 and 5, in some embodiments of the present invention, the limiting mechanism includes a plurality of inner wall grooves 23 penetrating through the inner wall surface of the scale 2, the inner wall grooves 23 are matched with the outer ribs 61 on the driving shaft 6, and the arrangement of the outer ribs 61 and the inner wall grooves 23 of the driving shaft 6 ensures that the firm fixation of the scale 2 and the driving shaft 6 further ensures the matching of the rotation stroke of the scale 2 and the injection amount of the injection device.
The utility model discloses a pen-type injection device of preferred embodiment, including the dose setting structure of any one above-mentioned embodiment. The pen type injection device is sequentially provided with a dose setter 1, a scale 2 and a trigger 3, wherein the dose setter 1 is fixedly connected with the trigger 3 so as to be capable of moving and rotating along with the movement and rotation of the trigger 3, and one end of the dose setter 1 facing the scale 2 is provided with a stop surface 11; the scale 2 is arranged in the trigger 3 and is provided with an abutting surface 21 facing the stop surface 11, and the scale 2 is fixed on the driving shaft 6 and can rotate along with the rotation of the driving shaft 6; when the medicine delivery amount is set, the trigger 3 is rotated, the trigger 3 drives the dose setter 1 to rotate, and the stop surface 11 of the dose setter 1 rotates along the axial direction to be separated from the abutting surface 21; when the dose setting device 1 is fixed and the drive shaft 6 rotates the scale 2 in the direction of the dose setting device 1, the dose setting device starts to deliver the dose, and when the abutment surface 21 of the scale 2 abuts the stop surface 11 again, the scale 2 stops rotating and the drive shaft 6 also stops rotating, thereby completing the delivery of the dose. The device corresponds the distance between the stop surface 11 and the abutting surface 21 to the amount of the medicine to be injected, so that the injection amount of the medicine is visible at each time, the control of an operator is convenient, the amount of the medicine required by each injection can be accurately controlled, the control and the conveying are scientifically and quantitatively carried for a plurality of times, and the conveying requirement of a client for injecting the medicine for a plurality of times without dosage is met.
The utility model discloses a working process does: the dose setter 1 is fixedly connected with the trigger 3 so as to be capable of moving and rotating along with the movement and rotation of the trigger 3, and one end of the dose setter 1 facing the scale 2 is provided with a stop surface 11; the scale 2 is arranged in the trigger 3 and is provided with an abutting surface 21 facing the stop surface 11, and the scale 2 is fixed on the driving shaft 6 and can rotate along with the rotation of the driving shaft 6; when the medicine delivery amount is set, the trigger 3 is rotated, the trigger 3 drives the dose setter 1 to rotate, and the stop surface 11 of the dose setter 1 rotates along the axial direction to be separated from the abutting surface 21; when the dose setting device 1 is fixed and the drive shaft 6 rotates the scale 2 in the direction of the dose setting device 1, the stop surface 11 of the scale 2 comes into contact with the abutment surface 21 of the scale 2 again, the scale 2 stops rotating and the drive shaft 6 also stops rotating, and this dose is delivered.
To sum up, the embodiment of the utility model provides a structure is set for to pen type injection device and dose thereof, its distance that will stop between face 11 and the butt face 21 corresponds the medicine volume that needs the injection, makes the medicine injection volume at every turn directly observable, and the operator of being convenient for controls, can the required dose of accurate control injection at every turn, and control and transport many times scientifically quantized, satisfies the transport demand that the customer injected the unnecessary dose many times.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.
Claims (10)
1. A dose setting structure for a pen injector device, comprising:
a dose setter axially rotatable and movable in a body provided in a pen injection device, the dose setter being provided at one side thereof with a stop surface provided towards a circumferential direction thereof;
the scale is spirally arranged along the axial direction of the scale and is fixed on a driving shaft of the pen type injection device, and one end of the scale facing the stop surface is provided with a butting surface matched with the stop surface;
the trigger is sleeved on the outer side of the scale, one end of the trigger is fixed with the dose setter to drive the dose setter to rotate, and the inner wall surface of the trigger is matched with the outer wall surface of the scale so that the trigger can rotate along the outer wall surface of the scale.
2. A dose setting arrangement for a pen injection device according to claim 1, characterised in that: the dose setting device is characterized in that a buckle is arranged at one end, facing the trigger, of the dose setting device, and a buckle groove matched with the buckle is arranged at one end, facing the dose setting device, of the trigger.
3. A dose setting arrangement for a pen injection device according to claim 2, characterised in that: the dose setting device is provided with a plurality of buckles which are evenly distributed, and the trigger is also provided with a plurality of buckle grooves corresponding to the quantity of the buckles.
4. A dose setting arrangement for a pen injection device according to claim 1, characterised in that: the outer end face of the scale is spirally provided with a plurality of scales distributed at intervals, and the trigger is provided with an observation window corresponding to the scales.
5. A dose setting arrangement for a pen injection device according to claim 1, characterised in that: the inner wall surface of the trigger is provided with a thread rib matched with the outer peripheral surface of the scale.
6. A dose setting arrangement for a pen injection device according to claim 1, characterised in that: one end of the dose setting device, which faces away from the trigger, is provided with a finger part, and the inner wall surface of the main body is provided with a limiting groove matched with the finger part.
7. A dose setting structure for a pen injection device according to claim 1, characterized in that: the outer sides of the scale and the dose setter are sleeved with bias springs, and two sides of each bias spring are respectively abutted against the opposite end faces of the trigger and the main body.
8. A dose setting structure for a pen injection device according to claim 1, characterized in that: a limiting mechanism is arranged on the inner wall surface of the scale to fix the scale on a driving shaft of the pen type injection device.
9. A dose setting arrangement for a pen injection device according to claim 8, wherein: the limiting mechanism comprises a plurality of inner wall grooves penetrating through the inner wall surface of the scale, and the inner wall grooves are matched with the outer ribs on the driving shaft.
10. A pen-type injection device characterized by: comprising a dose setting structure according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221729811.1U CN218870977U (en) | 2022-07-06 | 2022-07-06 | Pen type injection device and dose setting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221729811.1U CN218870977U (en) | 2022-07-06 | 2022-07-06 | Pen type injection device and dose setting structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218870977U true CN218870977U (en) | 2023-04-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221729811.1U Active CN218870977U (en) | 2022-07-06 | 2022-07-06 | Pen type injection device and dose setting structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218870977U (en) |
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2022
- 2022-07-06 CN CN202221729811.1U patent/CN218870977U/en active Active
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