CN219835963U

CN219835963U - Adjustable automatic injection device

Info

Publication number: CN219835963U
Application number: CN202321213557.4U
Authority: CN
Inventors: 熊长艳; 何四现; 李化顺
Original assignee: Suzhou Jiashu Medical Technology Co ltd
Current assignee: Suzhou Jiashu Medical Technology Co ltd
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-10-17
Anticipated expiration: 2033-05-19

Abstract

The utility model relates to an adjustable automatic injection device which comprises a button, a power rod stop frame, a knob, an upper pen container, a torsion spring fixing frame, a power rod, a screw knob, a bottle frame cover, a pen cap, a bottle support and a clamping bottle, wherein the top and the bottom of the upper pen container are respectively provided with an opening, the top of the pen cap is provided with an opening, the upper pen container is arranged on the pen cap, the bottle support is arranged between the upper pen container and the pen cap, and the clamping bottle is arranged in the bottle support. According to the utility model, the screw knob plays a role of a clutch switch and a limiting screw, and is matched with the energy storage and release of the torsion spring, so that the automatic adjustable quantity operation is convenient.

Description

Adjustable automatic injection device

Technical Field

The utility model relates to the technical field related to medical appliances, in particular to an adjustable automatic injection device.

Background

Injection pen products are classified into repeatable injection pens and disposable injection pens. The reusable pen cartridge is reusable, thus the structure is more complex than a disposable injection pen. The disposable injection pen is a 'medicine and machinery integrated' product, a pen body and a medicine bin are not detachable, and the disposable injection pen on the market at present can be divided into an adjustable type, a quantitative type and the like, and also can be divided into an automatic type and a manual type.

Through mass search, the prior art with publication number of CN110269977A discloses a dose-adjustable injection pen, which comprises: a bracket; a first cover; an adjustment sleeve; a locking sleeve; a first elastic member; a scale drum; a limit knob; a screw rod; the button component is arranged at the other end of the adjusting sleeve and used for rotating or pressing the adjusting sleeve, when the button component rotates, the locking sleeve, the first elastic piece, the limiting knob, the adjusting sleeve and the scale drum are driven to synchronously rotate so as to adjust injection dosage, and when the button component presses, the locking sleeve, the first elastic piece, the screw rod, the limiting knob, the adjusting sleeve and the scale drum are driven to synchronously rotate so as to push the screw rod to axially move for injection. According to the dose adjustable injection pen provided by the embodiment of the utility model, the scale cylinder is sleeved on the locking sleeve and matched with the screw rod and the limit knob through the button assembly, so that the dose adjustable injection pen is simple in structure, convenient to adjust the dose and easy to inject.

In summary, the existing one-time injection pen is either one-time injection completed or manually adjustable in volume, which is inconvenient to operate.

In view of the above-mentioned drawbacks, the present inventors have actively studied and innovated to create an adjustable automatic injection device that has a more industrially useful value.

Disclosure of Invention

To solve the above-mentioned problems, it is an object of the present utility model to provide an adjustable automatic injection device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an adjustable automatic injection device comprises a button, a power rod stop frame, a knob, an upper pen container, a torsion spring fixing frame, a power rod, a screw knob, a bottle frame cover, a pen cap, a bottle support and a clamping bottle, wherein the top and the bottom of the upper pen container are respectively provided with an opening, the top of the pen cap is provided with an opening, the upper pen container is arranged on the pen cap, the bottle support is arranged between the upper pen container and the pen cap, and the clamping bottle is arranged in the bottle support;

the knob is arranged at the outer side of the top of the upper pen container, the button is arranged on a ratchet plate at the top of the knob, a torsion spring fixing frame is arranged at the inner side of the top of the upper pen container, a power rod stopping frame is arranged between the torsion spring fixing frame and the ratchet plate at the top of the knob, the power rod stopping frame is clamped with the torsion spring fixing frame at the lower part, a power rod is arranged in the upper pen container along the vertical direction, the outer side of the power rod, which is close to the top, can sequentially pass through the torsion spring fixing frame and the power rod stopping frame from bottom to top, is clamped with the ratchet plate at the upper part, the top of the power rod can be contacted with the button at the upper part after passing through the ratchet plate, the outside of power pole is provided with the torsional spring, the top of torsional spring is connected with the torsional spring mount, the bottom of torsional spring is connected with the bottom of power pole, bottle holder lid and screw rod knob have been set gradually from down in the last pen container at bottle holder top, bottle holder lid and the screw rod knob joint of top are in the same place, the bottom of power pole can be in the same place with the screw rod knob joint of below, be provided with the screw rod along vertical direction in the power pole, the inboard of power pole, screw rod knob and bottle holder lid all is provided with the screw groove that can supply screw rod helical motion, the bottom of screw rod extends to one side in the card formula bottle and is connected with the bottle plug.

As a further improvement of the utility model, the outer side of the power rod is sequentially provided with the sleeve and the dial, the bottom of the sleeve is clamped with the bottom of the power rod, the sleeve is connected with the dial on the outer side through the sleeve positioning rib, and the dial is connected with the upper pen container on the outer side through the dial positioning rib.

As a further improvement of the utility model, a first ratchet wheel is arranged at the middle position on the ratchet wheel plate, and a plurality of first clamping claws connected with the first ratchet wheel are uniformly arranged on the outer side, close to the top, of the power rod along the circumferential direction.

As a further improvement of the utility model, the top of the screw knob is provided with a second ratchet wheel, and the outer side of the bottom of the power rod is uniformly provided with a plurality of second clamping claws connected with the second ratchet wheel along the circumferential direction.

As a further improvement of the utility model, a plurality of inclined blocks are uniformly arranged on the outer side of the bottom of the power rod stop frame along the circumferential direction, and a plurality of inclined grooves connected with the inclined blocks are uniformly arranged on the inner side of the torsion spring fixing frame along the circumferential direction.

As a further improvement of the utility model, a button spring is provided between the button and the ratchet plate.

As a further improvement of the utility model, a stop spring is arranged between the ratchet plate and the power rod stop frame.

By means of the scheme, the utility model has at least the following advantages:

according to the utility model, the screw knob plays a role of a clutch switch and a limiting screw, and is matched with the energy storage and release of the torsion spring, so that the automatic adjustable quantity operation is convenient.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an adjustable automatic injection device of the present utility model;

FIG. 2 is a schematic view of the structure of a first embodiment of the present utility model;

FIG. 3 is a schematic view of a partial structure of the knob and power lever of FIG. 2;

FIG. 4 is a partial schematic view of the power lever and screw knob of FIG. 2;

FIG. 5 is a schematic view of the structure of a second embodiment of the present utility model;

FIG. 6 is a schematic view of a partial structure of the knob and power lever of FIG. 5;

FIG. 7 is a schematic view of a partial construction of the power lever and screw knob of FIG. 5;

FIG. 8 is a schematic view showing a partial structure of the components 1 to 5 in FIG. 2 or FIG. 5;

FIG. 9 is a schematic partial structure of the components 6 to 10 in FIG. 2 or FIG. 5;

FIG. 10 is a schematic view showing a partial structure of the components 11 to 15 in FIG. 2 or FIG. 5;

fig. 11 is a schematic partial structure of the components 16 to 18 in fig. 2 or 5.

In the drawings, the meaning of each reference numeral is as follows.

1. Button 2 button spring

3. Power rod stop rack 4 knob

5. Upper pen container 6 dial

7. Stop spring of torsional spring fixing frame 8

9. Torsion spring 10 sleeve

11. Screw gasket 12 power rod

13. Screw 14 screw knob

15. Bottle rack cover 16 pen cap

17. Bottle support 18 clip type bottle

19. First ratchet of bottle stopper 20

21. First claw 22 sloping block

23. Chute 24 second claw

25. Second ratchet wheel

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In order to make the present utility model better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

Examples

As shown in figures 1 to 11 of the drawings,

an adjustable automatic injection device comprises a button 1, a power rod stop frame 3, a knob 4, an upper pen container 5, a torsion spring fixing frame 7, a power rod 12, a screw 13, a screw knob 14, a bottle frame cover 15, a pen cap 16, a bottle support 17 and a clamp type bottle 18, wherein the top and the bottom of the upper pen container 5 are respectively provided with an opening, the top of the pen cap 16 is provided with an opening, the upper pen container 5 is arranged on the pen cap 16, a bottle support 17 is arranged between the upper pen container 5 and the pen cap 16, and the clamp type bottle 18 is arranged in the bottle support 17.

The knob 4 is installed in the top outside position of last pen container 5, button 1 installs on the ratchet board at knob 4 top, torsion spring mount 7 is installed to the top inboard at last pen container 5, be provided with power pole position frame 3 between the ratchet board at torsion spring mount 7 and knob 4 top, power pole position frame 3 and the torsional spring mount 7 joint of below, be provided with power pole 12 along vertical direction in the last pen container 5, the outside that power pole 12 is close to the top can pass torsional spring mount 7 and power pole position frame 3 back and the ratchet board joint of top from down upwards in proper order, the top of power pole 12 can pass the ratchet board after can contact with button 1 of top and set up, the outside of power pole 12 is provided with torsional spring 9, the top of torsional spring 9 is connected with torsion spring mount 7, the bottom of torsional spring 9 is connected with the bottom of power pole 12, bottle holder 15 and screw 14 have been set gradually from down in the last pen container 5 at bottle holder 17 top, bottle holder 15 and screw 14 joint together, the bottom of power pole 12 can be with the screw rod 14 joint of below in proper order, the screw rod 13 along the screw rod 13 of screw rod 13 joint, the screw rod 13 of screw rod 13 and the screw rod 13 of screw rod 13 side extension, the screw rod 13 is provided with in the screw rod 13 along the direction of screw rod 13. Screw washer 11 is also mounted on screw 13.

Preferably, the outside of power pole 12 has set gradually sleeve 10 and calibrated scale 6, and the bottom joint of sleeve 10 and power pole 12, sleeve 10 are connected with the calibrated scale 6 in the outside through the sleeve locating rib, and calibrated scale 6 is connected with the last pen container 5 in the outside through the calibrated scale locating rib.

Preferably, a first ratchet 20 is arranged in the middle of the ratchet plate, and a plurality of first claws 21 connected with the first ratchet 20 are uniformly arranged on the outer side, close to the top, of the power rod 12 along the circumferential direction.

Preferably, the top of the screw knob 14 is provided with a second ratchet wheel 25, and the outer side of the bottom of the power rod 12 is uniformly provided with a plurality of second claws 24 connected with the second ratchet wheel 25 along the circumferential direction.

Preferably, a plurality of inclined blocks 22 are uniformly arranged on the outer side of the bottom of the power rod stop frame 3 along the circumferential direction, and a plurality of inclined grooves 23 connected with the inclined blocks 22 are uniformly arranged on the inner side of the torsion spring fixing frame 7 along the circumferential direction.

Preferably, a button spring 2 is provided between the button 1 and the ratchet plate.

Preferably, a stop spring 8 is arranged between the ratchet plate and the power rod stop frame 3.

As shown in fig. 2 to 4, a first embodiment of the present utility model:

at this time, the energy storage process of the torsion spring 9 is performed.

As shown in fig. 5 to 7, a second embodiment of the present utility model:

at this time, the energy storage of the torsion spring 9 is released.

The implementation principle of the utility model is briefly described:

by rotating the knob clockwise, the kinetic energy of the rotation of the knob 4 is stored in the torsion spring 9. When the knob 4 is rotated, the dial 6 rotates together, but the screw 13 does not rotate by the principle of separation of the clutch mechanism (the power lever 12 and the screw knob 14 constitute the clutch mechanism). Then the top button 1 is pressed again, the first claw 21 at the top of the power rod 12 is matched with the first ratchet 20 to be opened, namely, the switch of the torsion spring 9 is opened, the kinetic energy stored in the torsion spring 9 is released, the screw 13 and the dial 6 are driven to rotate through the clutch mechanism, the bottle plug 19 is pushed, and then the liquid medicine is injected.

1. The energy storage and release principle of the torsion spring 9:

1) The torsion spring 9 is fixed in the following manner:

one end of the top of the torsion spring is hooked with a torsion spring fixing frame 7, one end of the bottom of the torsion spring 9 is hooked with the bottom of a fine dried noodle power rod 12, and then a sleeve 10 is arranged.

2) Energy storage principle of torsion spring 9:

when the knob 4 rotates, the power rod 12 is driven to rotate through the ratchet structure, so that the torsion spring 9 is driven to rotate, the knob is prevented from reversing through the limiting mechanism (the resistance of the limiting mechanism is larger than the reversing force of the torsion spring), and the energy storage of the torsion spring 9 is realized through the two steps.

The limiting mechanism consists of a bevel block 22 on the power rod stop frame 3, a chute 23 on the torsion spring fixing frame 7 and a stop spring 8, and the resistance is controlled by the angle of the bevel block chute and the stop spring 8.

3) The torsion spring 9 releases the energy principle:

when the button 1 is pressed, the power rod 12 moves along with the button 1 towards one end of the clip bottle 18 along the axial direction, so that the first claw 21 on the power rod 12 is separated from the first ratchet 20 on the ratchet plate along the axial direction, namely, an energy storage switch of the torsion spring 9 is opened, and the energy storage of the torsion spring 9 is released.

2. Dial part structure (principle of realizing adjustable function)

1) The dial 6 is matched with the sleeve 10 through a dial positioning rib structure.

2) When the power rod 12 rotates along with the knob 4, the dial 6 is driven to rotate along with the knob, so that the change of scales is realized, and the adjustable function is realized.

3. Clutch switch part structure (clutch mechanism is formed by power rod 12 and screw knob 14)

1) Normally, under the action of the button spring 2 and the torsion spring 9, the clutch mechanism (the clutch mechanism is formed by the power rod 12 and the screw knob 14), at this time, the screw 13 can not rotate and can not push the bottle stopper of the clip-on bottle no matter what the knob 4 rotates.

2) When the push button 1 is pressed, the sleeve 10 also moves axially, and the power lock engaged with it also moves toward the bottom of the screw. At this time, the power rod 12 and the screw knob 14 are matched together to drive the screw 13 to rotate together, so as to push the bottle stopper 19 in the clip-on bottle 18 to move, thereby realizing the injection function.

4. Pre-stored energy during torsion spring assembly

1) In order to use the torsion spring to achieve a greater reversal force than the rotational force after the finished product (thus achieving a safe resetting of the dial after the customer adjusts the dose, thereby ensuring a safe implementation of the adjustable function), it is necessary to store energy in advance when assembling the torsion spring.

2) When the torsion spring, the sleeve, the power rod, the dial, the power rod stopping frame and the torsion spring fixing frame are assembled together, the needle is reversely inserted to rotate the power rod stopping position, and then the power rod stopping position is assembled according to the corresponding limiting rib position.

5. Bottle rack cover function:

1) The screw knob, the clip type bottle and the bottle support are fixed;

2) The screw rod is provided with threads, so that the screw rod can be driven to advance.

The assembly and installation steps of the utility model are briefly described as follows:

1. assembling a power rod and a torsion spring;

2. assembling a sleeve;

3. assembling a dial and a torsional spring fixing bracket;

4. assembling an upper pen container;

5. assembling a screw stop and a stop spring;

6. assembling a knob;

7. assembling a button and a button spring;

8. assembling a screw knob, a bottle holder cover and a screw;

9. assembling a clamping type bottle, a bottle support and a screw gasket;

10. and assembling the pen cap.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features being indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected: can be mechanically or electrically connected: the terms are used herein to denote any order or quantity, unless otherwise specified.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. The utility model provides an adjustable automatic injection device, includes button (1), power pole end position frame (3), knob (4), go up pen container (5), torsional spring mount (7), power pole (12), screw rod (13), screw rod knob (14), bottle holder lid (15), pen cap (16), bottle support (17) and card bottle (18), the top and the bottom of going up pen container (5) all open-ended setting, pen cap (16) open-ended setting, go up pen container (5) and install on pen cap (16), be provided with bottle support (17) between last pen container (5) and pen cap (16), be provided with card bottle (18) in bottle support (17); the method is characterized in that:

the utility model discloses a rotary bottle, which is characterized in that a knob (4) is arranged at the outer side of the top of an upper pen container (5), a button (1) is arranged on a ratchet plate at the top of the knob (4), a torsion spring fixing frame (7) is arranged at the inner side of the top of the upper pen container (5), a power rod stopping frame (3) is arranged between the torsion spring fixing frame (7) and the ratchet plate at the top of the knob (4), the power rod stopping frame (3) is connected with the lower torsion spring fixing frame (7) in a clamping manner, a power rod (12) is arranged in the upper pen container (5) along the vertical direction, the outer side of the power rod (12) close to the top can sequentially pass through the torsion spring fixing frame (7) and the power rod stopping frame (3) from bottom to top, then is clamped with the ratchet plate at the top, the top of the power rod (12) can be contacted with the button (1) at the top, the outer side of the power rod (12) is provided with a torsion spring (9), the top of the torsion spring (9) is connected with the torsion spring fixing frame (7), the bottom of the power rod (9) is connected with a screw cap (15) and a screw cap (15) is sequentially arranged on the bottom of the top of the rotary bottle (5) from bottom of the rotary bottle (14) in sequence, the bottom of power pole (12) can be in the same place with screw rod knob (14) joint of below, be provided with screw rod (13) along vertical direction in power pole (12), the inboard of power pole (12), screw rod knob (14) and bottle holder lid (15) all is provided with the screw thread groove that can supply screw rod (13) screw motion, the bottom of screw rod (13) extends to one side in cassette bottle (18) and is connected with bottle plug (19).

2. An adjustable automatic injection device according to claim 1, characterized in that the outside of the power rod (12) is provided with a sleeve (10) and a dial (6) in sequence, the bottom of the sleeve (10) is clamped with the bottom of the power rod (12), the sleeve (10) is connected with the outside dial (6) through a sleeve positioning rib, and the dial (6) is connected with the outside upper pen container (5) through a dial positioning rib.

3. An adjustable automatic injection device according to claim 1, characterized in that a first ratchet wheel (20) is arranged in the middle position on the ratchet wheel plate, and a plurality of first claws (21) connected with the first ratchet wheel (20) are uniformly arranged on the outer side of the power rod (12) close to the top along the circumferential direction.

4. An adjustable automatic injection device according to claim 1, characterized in that the top of the screw knob (14) is provided with a second ratchet wheel (25), and the outer side of the bottom of the power rod (12) is uniformly provided with a plurality of second claws (24) connected with the second ratchet wheel (25) along the circumferential direction.

5. An adjustable automatic injection device according to claim 1, characterized in that the outer side of the bottom of the power rod stop frame (3) is uniformly provided with a plurality of inclined blocks (22) along the circumferential direction, and the inner side of the torsion spring fixing frame (7) is uniformly provided with a plurality of inclined grooves (23) connected with the inclined blocks (22) along the circumferential direction.

6. An adjustable automatic injection device according to claim 1, characterized in that a button spring (2) is arranged between the button (1) and the ratchet plate.

7. An adjustable automatic injection device according to claim 1, characterized in that a stop spring (8) is arranged between the ratchet plate and the power lever stop frame (3).