CN115400290A

CN115400290A - Insulin injection device

Info

Publication number: CN115400290A
Application number: CN202211066870.XA
Authority: CN
Inventors: 夏伟
Original assignee: Sichuan Peoples Hospital of Sichuan Academy of Medical Sciences
Current assignee: Sichuan Peoples Hospital of Sichuan Academy of Medical Sciences
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-11-29
Anticipated expiration: 2042-09-01
Also published as: CN115400290B

Abstract

The invention relates to an insulin injection device, which comprises a first part, a second part, a roller and a needle head; characterized in that the interior of the first part is provided as a hollow, the first part comprising: a needle end and a filling end; the second portion includes: a sleeve; the bushing includes: a pushing end and an extending end; the inner part of the sleeve is provided with an adjusting piece for adjusting the pushing length of the pushing end; the roller is arranged on the outer side wall of the first part, and the sleeve and the first part are connected through the roller; the first part and the sleeve are dislocated and unscrewed through a roller; the needle head is connected with the needle head end; the syringe needle includes connecting portion and needle, the needle with connecting portion be connected as an organic whole, the needle is provided with two sharp-pointed ends.

Description

Insulin injection device

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an insulin injection device.

Background

The incidence of diabetes is increasing and has become the third leading killer after cardiovascular and cerebrovascular diseases and tumors. Insulin injection therapy is currently considered to be an effective method of treating diabetes. The intensive treatment is carried out by insulin injection, so that the blood sugar, the blood fat, the blood pressure, the BMI and the like of a patient can reach the standard comprehensively. Currently, insulin is infused by using an insulin injection pen and an insulin syringe.

The insulin pen avoids the tedious process that a patient draws insulin in an insulin medicine bottle by using an injector, simultaneously avoids the embarrassment that the patient injects the insulin in public places, and brings convenience for the patient with poor eyesight or even blindness to inject the insulin. When the existing insulin pen is used for injection, after sufficient insulin dosage is checked and confirmed, a dosage adjusting knob is rotated to adjust the number of required injection units.

The existing insulin injection pen is filled with insulin in a filled pen bag mode for many generations, so that the insulin injection pen needs to be disassembled in the process of filling the insulin pen bag, and the insulin injection pen is assembled after the pen bag is filled, so that the problem that part of parts of the insulin injection pen are lost in the assembling process exists; in addition, some diabetics have the problem of hand shaking, so that the assembly process of the insulin injection pen has certain difficulty relative to the diabetics; therefore, the insulin injection pen used in clinic has the following problems:

1. during the assembly process of the insulin injection pen, parts of the insulin injection pen are easy to lose.

2. How to simplify the filling mode of the insulin liquid medicine bag.

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an insulin injection device is provided.

Disclosure of Invention

To overcome the problems set forth in the background, the present invention provides an insulin injection device.

An insulin injection device, comprising:

a first portion; the interior of the first part is provided as a hollow, the first part comprising: a needle end and a filling end.

A second portion, the sleeve comprising: a pushing end and a protruding end; the inside of sleeve pipe is provided with the regulating part for adjust the length of pushing out of propelling movement end.

A roller disposed at an outer sidewall of the first portion, the sleeve being connected to the first portion by the roller; and the first part and the sleeve are dislocated and unscrewed through a roller.

A needle connected to the needle end; the syringe needle includes connecting portion and needle, the needle with connecting portion be connected as an organic whole, the needle is provided with two sharp ends.

In some embodiments of this application, the first portion is provided with constant head tank one, a limit face of constant head tank one with fill the end and coincide mutually, the sleeve pipe is provided with constant head tank two, a limit face of constant head tank two with stretch out the end and coincide mutually, and the position of constant head tank two with the position of constant head tank one is antipodal, set up the axle in the constant head tank two, and be in epaxial swing joint limiting plate, still be provided with reset spring one in the constant head tank two, reset spring one's one end is connected with the one end of limiting plate.

In some embodiments of the present application, the pushing end of the cannula is provided with a pressing piece comprising: a pressing plate and connecting pins; the clamp plate with connect the foot and set up as an organic whole, the promotion end is provided with two sharp spouts, two sharp spout position is relative, connect foot quantity with sharp spout quantity is the same, just it is in to connect the foot setting in the sharp spout.

Furthermore, a transition piece is arranged on one end face of the pressing plate and is in contact with the adjusting piece, so that the adjusting piece can move axially along the inner wall of the sleeve by pressing the pressing plate.

In some embodiments of the present application, a tube wall of the sleeve is provided with an open slot, the open slot is parallel to a center line of the sleeve, and the adjusting member is partially located in the open slot.

In some embodiments of the present application, the adjustment member comprises: the adjusting mechanism comprises an adjusting main body, an adjusting structure and a push rod; the adjustment body comprises a first end and a second end; the adjusting structure is arranged at the first end of the adjusting main body, the push rod is arranged at the second end of the adjusting main body, the push rod and the adjusting main body are connected into a whole, the adjusting structure is in contact with the transition piece, a second reset spring is further arranged in the sleeve, one end of the second reset spring is connected with the second end of the adjusting main body, and the other end of the second reset spring is connected with the first retainer ring.

Further, the adjustment structure includes: the adjusting mechanism comprises a support frame, an adjusting rod, a connecting rod and a transmission part, wherein a containing groove is formed in the first end of an adjusting main body, the support frame is arranged in the containing groove, a cylindrical barrel is arranged on the support frame, and the cylindrical barrel and the adjusting main body are concentric; the adjusting rod is arranged in the cylindrical barrel; one end of the adjusting rod is larger than the diameter of the sleeve and is in contact with the end face of the top of the sleeve; the connecting rod comprises a first connecting end and a second connecting end, the first connecting end of the connecting rod is hinged with the adjusting rod, and the second connecting section of the connecting rod is hinged with the transmission piece; the adjusting body is transversely provided with an adjusting shaft, the transmission piece is arranged on the adjusting shaft, and the transmission piece is driven by the adjusting shaft to rotate.

Furthermore, the bottom end face of the accommodating groove is provided with a blocking block, and the blocking block coincides with the adjusting shaft in a overlooking state.

Furthermore, the outer wall of regulating spindle is provided with the convex key, set up on the driving medium and have the notch, the driving medium pass through the notch with the regulating spindle is connected.

Furthermore, the regulating shaft crosses the accommodating groove, one end of the regulating shaft extends into the open slot, and a braking structure is further arranged on the regulating shaft.

The invention has the beneficial effects that: the first part and the second part are connected by using the roller, so that the insulin injection pen does not need to be disassembled again when the insulin liquid medicine bag is filled, and the problem of losing part of parts is avoided; when the device is used, the first part and the second part can be directly rotated out of place, and then the insulin liquid medicine bag is filled, so that the filling mode of the insulin liquid medicine bag is simplified.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the overall structure of the present invention;

FIG. 3 is a first partial schematic view of the present invention;

FIG. 4 is a schematic view of a first and a second clamping members according to the present invention;

FIG. 5 is a second partial schematic view of the present invention;

FIG. 6 is a second partial cross-sectional schematic view of the present invention;

FIG. 7 is a schematic view of an adjustment member of the present invention;

FIG. 8 is a schematic view of the present invention showing the adjustment lever in an extended position;

FIG. 9 is a schematic view of the adjusting lever of the present invention in a retracted state;

in the figure, 1, the first part; 11. a needle end; 12. a loading end; 13. positioning a first groove; 14. a connecting portion; 15. a needle; 16. a pen cap; 2. a first sliding chute; 21. a second chute; 22. a push button; 23. a first clamping piece; 24. a second clamping piece; 3. a sleeve; 31. a pushing end; 32. an extension end; 33. a pressing member; 331. a transition piece; 34. an open slot; 35. positioning a second groove; 4. adjusting the main body; 41. an accommodating recess; 411. a support frame; 412. a cylindrical barrel; 413. adjusting a rod; 414. a connecting rod; 415. a transmission member; 416. an adjustment shaft; 4161. a brake ring; 4162. a brake table; 42. a push rod; 5. and (3) a roller.

Detailed Description

Various embodiments of the present invention will now be described in detail with reference to the drawings, in order to facilitate the description of the relationship between one element or feature and another element(s) or feature(s) in the drawings. These spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be oriented in different orientations (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1 to 3 and 5, which are schematic views illustrating the overall structure of the present invention and illustrating the main technical content of the present invention, the present embodiment provides an insulin injection device, which comprises,

a first portion 1; the first part 1 comprises: the needle end 11 and the filling end 12, and the first part 1 is provided with a pushing piece for pushing out the insulin capsule.

A second portion, the second portion comprising: a sleeve 3; the sleeve 3 comprises a pushing end 31 and a protruding end 32; the inside of the sleeve 3 is provided with an adjusting piece for adjusting the pushing-out length of the pushing-out end.

And the rollers 5 are arranged on the outer side wall of the first part 1, the sleeve 3 is connected with the first part 1 through the rollers 5, and the first part 1 and the sleeve 3 are unscrewed in a staggered mode through the rollers 5.

The needle 15 head, the needle 15 head includes connecting portion 14 and needle 15, and needle 15 is connected with connecting portion 14 as an organic whole, and needle 15 is provided with two sharp-pointed ends.

Referring to fig. 1-3 and 5, in this embodiment, the first portion 1 is provided with a first positioning groove 13, a side surface of the first positioning groove 13 coincides with the filling end 12, the sleeve 3 is provided with a second positioning groove 35, a side surface of the second positioning groove 35 coincides with the extending end 32, a position of the second positioning groove 35 corresponds to a position of the first positioning groove 13, a shaft is disposed in the second positioning groove 35, the shaft is movably connected with a limiting plate, a first return spring is further disposed in the second positioning groove 35, one end of the first return spring is connected with one end of the limiting plate, the limiting plate can always keep an inclined state, the other end of the limiting plate can also always be located in the first positioning groove 13, and when the limiting plate is used, one end of the limiting plate connected with the first return spring is pressed, so that one end of the limiting plate, which is not connected with the first return spring, is tilted upward, and one end of the limiting plate, which is not connected with the first return spring, is separated from the first positioning groove 13.

The interior of the first part 1 is hollow and a stopper is provided near the needle end 11, by which the filling end 12 communicates with the needle end 11 and the insulin capsule is prevented from falling off during filling.

Referring to fig. 1-3, in this embodiment, the outer side wall of the needle end 11 is provided with a threaded section, the connecting portion 14 is annular, the inner wall of the connecting portion 14 is provided with a threaded groove, and the connecting portion 14 is connected with the needle end 11 by meshing the threaded groove with the threaded section.

Alternatively, the needle end 11 is provided with a protrusion, which includes a first protrusion and a second protrusion, the first protrusion and the second protrusion have the same shape and size, and the first protrusion is opposite to the second protrusion; one end of the first bulge to the other end of the first bulge are inclined surfaces, the inner wall of the connecting part 14 is provided with a fixture block, the fixture block comprises a first fixture block and a second fixture block, the first fixture block and the second fixture block are the same in shape and size, and the first fixture block and the second fixture block are opposite in position; when the connecting portion 14 is connected with the needle tip 11, the connecting portion 14 is rotated to enable the first clamping block to slide along the inclined plane of the first protrusion, and the second clamping block is connected with the needle tip 11 along the second protrusion in the same manner.

The needle 15 is disposable.

The needle end 11 is provided with a pen cap 16, and the pen cap 16 is inserted with the needle end 11.

Referring to fig. 2-4, in this embodiment, a placing area is further disposed inside the first component, the placing area has a shape identical to that of the outer wall of the first component, a sliding area is disposed on the outer wall of the first component, a through sliding slot is disposed to communicate the placing area with the outside, and the pushing member slides along the through sliding slot.

The through sliding groove comprises a first sliding groove 2 and a second sliding groove 21, the first sliding groove 2 and the second sliding groove 21 are the same in shape and size, and one end of the first sliding groove 2 and one end of the second sliding groove 21 are gathered in a mirror image mode.

The pusher includes: push button 22 and holder, push button 22 sets up in the sliding area, and the holder includes: a first clamping piece 23 and a second clamping piece 24; the first clamping piece 23 and the second clamping piece 24 are arranged in a mirror image mode, the first clamping piece 23 and the second clamping piece 24 are identical in shape and structure, the first clamping piece 23 and the second clamping piece 24 are arc-shaped, the radian of the first clamping piece 23 and the radian of the second clamping piece 24 are identical to that of a placement area, a limiting groove is formed in one end face of the push button 22, the first clamping piece 23 is provided with a first sliding shaft, the second clamping piece 24 is provided with a second sliding shaft, the first sliding shaft is connected into the limiting groove through a first sliding groove 2, the second sliding shaft is connected into the limiting groove through a second sliding groove 21, and the first sliding shaft and the second sliding shaft are both connected into the limiting groove in a movable connection mode; during the use, when the promotion pushes away button 22 and reciprocates in the slip region, holder one 23 slides along spout one 2 and spout two 21 respectively with holder two 24 alone, and at the in-process that upwards slides, holder one 23 gathers together with holder two 24 mirror images, realizes carrying out the centre gripping and taking out the insulin liquid medicine bag of placing in first part inside, has prevented that insulin liquid medicine bag tip from taking out the difficult problem with filling end 12 coincidence back, insulin liquid medicine bag.

Referring to fig. 2 and 5-9, in the present embodiment, the pushing end 31 of the cannula 3 is provided with a pressing member 33, and the pressing member 33 includes: a pressing plate and connecting pins; the clamp plate sets up as an organic whole with being connected the foot, and promotion end 31 is provided with two sharp spouts, and two sharp spout positions are relative, connect foot quantity the same with sharp spout quantity, and connect the foot setting in sharp spout.

One end face of the pressing plate is provided with a transition piece 331, and the transition piece 331 is in contact with the adjusting piece, so that the adjusting piece can move axially along the inner wall of the sleeve 3 by pressing the pressing plate.

Referring to fig. 6-7, in the present embodiment, a first retaining ring and a second retaining ring are arranged inside the casing 3, the first retaining ring is close to the protruding end 32, and the second retaining ring is close to the pushing section; the first retainer ring is used for keeping the position of the adjusting piece, so that the adjusting piece is kept concentric with the sleeve 3, and the second retainer ring is used for preventing the adjusting piece from separating from the sleeve 3.

The wall of the sleeve 3 is provided with an opening groove 34, the opening groove 34 is parallel to the midline of the sleeve 3, the adjusting part is partially positioned in the opening groove 34, and the adjusting part is prevented from rotating in the sleeve 3 through the opening groove 34.

Referring to fig. 6-9, in the present embodiment, the adjusting member includes: the adjustment body 4, adjustment structure, push rod 42; the adjustment body 4 comprises a first end and a second end; the adjusting structure is arranged at the first end of the adjusting main body 4, the push rod 42 is arranged at the second end of the adjusting main body 4, the push rod 42 and the adjusting main body 4 are connected into a whole, the adjusting structure is in contact with the transition piece 331, the sleeve 3 is further internally provided with a second return spring, one end of the second return spring is connected with the second end of the adjusting main body 4, and the other end of the second return spring is connected with the first retainer ring.

The adjustment structure includes: the adjusting device comprises a supporting frame 411, an adjusting rod 413, a connecting rod 414 and a transmission piece 415, wherein a containing groove 41 is formed in the first end of the adjusting main body 4, the supporting frame 411 is arranged in the containing groove 41, a cylindrical barrel 412 is arranged on the supporting frame 411, and the cylindrical barrel 412 and the adjusting main body 4 are concentric; an adjustment lever 413 is disposed within the cylindrical barrel 412; one end of the adjusting rod 413 is larger than the diameter of the sleeve and is in contact with the top end face of the sleeve; the connecting rod 414 comprises a first connecting end and a second connecting end, the first connecting end of the connecting rod 414 is hinged to the adjusting rod 413, and the second connecting section of the connecting rod 414 is hinged to the transmission piece 415; an adjusting shaft 416 is transversely arranged on the adjusting body 4, a transmission piece 415 is arranged on the adjusting shaft 416, and the transmission piece 415 is driven by the adjusting shaft 416 to rotate; when the adjusting device is used, the adjusting shaft 416 is rotated to enable the transmission piece 415 to rotate anticlockwise 15 or clockwise 15, so that the adjusting rod 413 extends out or retracts, and the whole length of the adjusting piece is adjusted; then, by pressing the pressing plate, the pressing plate contacts with the end of the adjusting rod 413 not connected with the connecting rod 414, so as to realize the integral descending of the adjusting body 4, and the push rod 42 extends out of the sleeve.

More specifically, the bottom end face of the accommodating groove 41 is provided with a blocking piece, the blocking piece coincides with the adjusting shaft 416 in a top view state, when the transmission piece 415 rotates counterclockwise 15, one end face of the transmission piece 415 can be in contact with the blocking piece, which is the maximum extending state of the adjusting rod 413, and can prevent the transmission piece 415 from rotating excessively, when the transmission piece 415 rotates clockwise 15, the transmission piece rotates to a certain degree, the larger end of the diameter of the adjusting rod 413 is in contact with the top of the sleeve, the adjusting rod 413 is prevented from being separated from the sleeve, and the transmission piece 415 is prevented from rotating excessively clockwise 15.

It should be noted that, when one end face of the transmission member 415 is in contact with the blocking block, the adjusting rod 413 extends out of the sleeve to the maximum extent, and at this time, the whole adjusting member is the maximum length, and the pressing plate is pressed in this state, so that the push rod 42 can be pushed out to the maximum extent, and the liquid medicine in the insulin liquid medicine bag can be completely pushed out, otherwise, when the transmission member 415 is not in contact with the blocking block, the liquid medicine in the insulin liquid medicine bag cannot be completely pushed out by the extending extent of the push rod 42.

The outer wall of the adjusting shaft 416 is provided with a convex key, the transmission piece 415 is provided with a notch, the transmission piece 415 is connected with the adjusting shaft 416 through the notch, and the transmission piece 415 and the adjusting shaft 416 can move synchronously when the adjusting shaft 416 is rotated through the notch, so that the problem of thread slipping is prevented.

The adjusting shaft 416 crosses the accommodating groove 41, one end of the adjusting shaft 416 extends into the opening groove 34, and a braking structure is further disposed on the adjusting shaft 416, and is used for maintaining the state of the adjusting shaft 416 after rotation and preventing the rotating member and the adjusting shaft 416 from rotating under stress after the pressing plate is pressed.

Referring to fig. 8 to 9, in the present embodiment, the braking structure includes: a third return spring arranged around the adjusting shaft 416 and a brake ring 4161 arranged on the adjusting shaft 416; a brake stage 4162 coinciding with the axis of the adjustment shaft 416; one end of a third return spring is connected with the inner wall of the accommodating groove 41, the other end of the third return spring is connected with the brake ring 4161, one end face of the brake table 4162 is provided with brake teeth, one end of the brake table 4162 is integrally connected with the inner wall of the accommodating groove 41, and one end, provided with the brake teeth, of the brake table 4162 is meshed with one end of the adjusting shaft 416; in use, the adjusting shaft 416 is rotated by pulling the adjusting shaft 416 outward to disengage one end of the adjusting shaft 416 from the stop stage 4162, and after the adjusting shaft 416 is rotated to adjust the extension or retraction length of the adjusting rod 413, the adjusting shaft 416 is released to re-engage the adjusting shaft 416 with the stop stage 4162.

The adjusting shaft 416 is provided with a scale groove at one end in the opening groove 34, and a pointer 15 at the side of the opening groove 34 for indicating the amount of injection.

When the insulin liquid medicine bag fixing device is used, firstly, the limiting plate is pressed, the end, which is not connected with the first return spring, of the limiting plate is enabled to be upwarped, the end, which is not connected with the first return spring, of the limiting plate is enabled to be separated from the first positioning groove, the first part and the second part can be rotated in a staggered mode in the state, after the first part and the second part are rotated, the filling end of the first part is in an open state, the insulin liquid medicine bag is filled in the first part, then the first part and the second part are aligned in a rotating mode through the roller, and at the moment, the limiting plate is clamped into the first positioning groove, so that the first part and the second part are fixed in position; pulling the pen cap open, screwing the needle head at the needle head end, and pricking a sharp end of the needle head into the insulin liquid medicine bag in the screwing process; thirdly, the adjusting shaft is pulled outwards and rotated to adjust the extending or retracting length of the adjusting shaft, after the adjustment is completed, the pressing plate is pressed to enable the adjusting piece to move axially along the inner wall of the sleeve, so that the push rod extends from the extending end of the second part into the first part, one end of the push rod pushes insulin liquid medicine in the insulin liquid medicine bag to be discharged from the sharp end of the needle head, after the injection of the insulin is completed, the pressing plate is released, and the push rod is reset by the reset spring II; and then the first part and the second part are rotated to be separated, and the insulin liquid medicine bag is pushed out by pushing the pushing piece on the first part.

In addition, it should be noted that, in the existing insulin liquid medicine bag, one end is a closed end, and the other end is provided with a piston, when the closed end is punctured and circulated, the piston can push along the axial direction of the liquid medicine bag.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments described herein are only a part of the embodiments of the present invention, and not all embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and embodiments can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Claims

1. An insulin injection device comprising, a first part, a second part, a roller, a needle; characterized in that, the inside of first portion sets up to the cavity, first portion includes: a needle end and a filling end; the second portion includes: a sleeve; the bushing includes: a pushing end and an extending end; the inner part of the sleeve is provided with an adjusting piece for adjusting the pushing length of the pushing end; the roller is arranged on the outer side wall of the first part, and the sleeve and the first part are connected through the roller; the first part and the sleeve are dislocated and unscrewed through a roller; the needle head is connected with the needle head end; the syringe needle includes connecting portion and needle, the needle with connecting portion be connected as an organic whole, the needle is provided with two sharp ends.

2. The insulin injection device according to claim 1, wherein the first portion is provided with a first positioning groove, one side surface of the first positioning groove coincides with the filling end, the sleeve is provided with a second positioning groove, one side surface of the second positioning groove coincides with the extending end, the position of the second positioning groove is opposite to that of the first positioning groove, a shaft is arranged in the second positioning groove, a limiting plate is arranged on the shaft, a first return spring is further arranged in the second positioning groove, and one end of the first return spring is connected with one end of the limiting plate.

3. The insulin injection device according to claim 1, wherein the pushing end of the cannula is provided with a pressing piece including: a pressing plate and connecting pins; the clamp plate with connect the foot and set up as an organic whole, the promotion end is provided with two sharp spouts, two sharp spout position is relative, connect foot quantity with sharp spout quantity is the same, just it is in to connect the foot setting in the sharp spout.

4. The insulin injection device according to claim 3, wherein a transition piece is provided at one end surface of the pressing plate, and the transition piece is in contact with the adjusting piece so as to axially move the adjusting piece along the inner wall of the sleeve by pressing the pressing plate.

5. An insulin injection device according to claim 4, wherein the wall of the sleeve is provided with an open slot which is parallel to the midline of the sleeve, and the adjustment member is partially located in the open slot.

6. The insulin injection device according to claim 5, wherein the regulating member includes: the adjusting mechanism comprises an adjusting main body, an adjusting structure and a push rod; the adjustment body comprises a first end and a second end; the adjusting structure is arranged at the first end of the adjusting body, the push rod is arranged at the second end of the adjusting body, the push rod and the adjusting body are connected into a whole, the adjusting structure is in contact with the transition piece, a second reset spring is further arranged in the sleeve, one end of the second reset spring is connected with the second end of the adjusting body, and the other end of the second reset spring is connected with the first check ring.

7. The insulin injection device according to claim 6, wherein the adjustment structure comprises: the adjusting mechanism comprises a support frame, an adjusting rod, a connecting rod and a transmission part, wherein a containing groove is formed in the first end of an adjusting main body, the support frame is arranged in the containing groove, a cylindrical barrel is arranged on the support frame, and the cylindrical barrel and the adjusting main body are concentric; the adjusting rod is arranged in the cylindrical barrel; one end of the adjusting rod is larger than the diameter of the sleeve and is in contact with the end face of the top of the sleeve; the connecting rod comprises a first connecting end and a second connecting end, the first connecting end of the connecting rod is hinged with the adjusting rod, and the second connecting section of the connecting rod is hinged with the transmission piece; the adjusting body is transversely provided with an adjusting shaft, the transmission part is arranged on the adjusting shaft, and the transmission part is driven by the adjusting shaft to rotate.

8. The insulin injection device according to claim 7, wherein a bottom end face of the accommodating recess is provided with a stopper which coincides with the adjustment shaft in a plan view.

9. An insulin injection device according to claim 7, wherein the outer wall of the adjustment shaft is provided with a protruding key, and the transmission member is provided with a notch, and the transmission member is connected with the adjustment shaft through the notch.

10. The insulin injection device according to claim 9, wherein the adjusting shaft traverses the accommodating groove, one end of the adjusting shaft extends into the opening groove, and a braking structure is further arranged on the adjusting shaft.