CN115068740A

CN115068740A - Paste formula insulin pump of applying

Info

Publication number: CN115068740A
Application number: CN202210834342.8A
Authority: CN
Inventors: 刘祥华; 谭益民; 刘师宏; 章静; 杨超; 郑湘明; 陈一; 刘超
Original assignee: Hunan Qianshan Medical Apparatus And Instruments Co ltd
Current assignee: Hunan Qianshan Medical Apparatus And Instruments Co ltd
Priority date: 2022-07-14
Filing date: 2022-07-14
Publication date: 2022-09-20
Also published as: WO2024011692A1

Abstract

The invention discloses a pasting type insulin pump, which comprises an injection assembly, a pump body and a pump cover, wherein the injection assembly is used for completing injection operation of a patient; the liquid pumping assembly comprises an electromagnetic driving assembly and an executing assembly, and the electromagnetic driving assembly can drive the executing assembly in an electromagnetic driving mode to control the injection assembly to inject liquid into a patient; the control main board assembly is used for controlling the opening and closing of the pump liquid assembly, the pump liquid power is provided in an electromagnetic driving mode, and devices such as a motor and a speed reducer are not needed, so that the device is lower in manufacturing cost, smaller in size, more in injection parts which can be selected, such as abdomen, limbs and the like, and the possibility of complications caused by always injecting the same part can be reduced.

Description

Paste formula insulin pump of applying

Technical Field

The invention relates to the field of insulin pumps, in particular to a pasting type insulin pump.

Background

The insulin pump can simulate a physiological insulin secretion mode and mediate the physiological insulin secretion according to the characteristics of different time insulin physiological secretion, so that the insulin pump is more humanized and more accords with the treatment of the physiological insulin secretion mode; the driving part in the existing insulin pump is generally composed of a motor, an encoder, a reduction box, a conduit and the like, so that the insulin pump is large in size, few in injection part can be selected, and inconvenient to carry and poor in concealment due to the large size and the long conduit, and is easy to suffer from different peripheral eyes; meanwhile, due to the structure of insulin, the manufacturing cost of the insulin is high, so that the insulin is high in price and difficult to accept by common people, due to high price, people who use the insulin also mainly concentrate on type 1 diabetes mellitus patients, and type 2 diabetes mellitus patients and gestational diabetes mellitus patients basically refuse to use the insulin, and a pasting type insulin pump is designed aiming at the defects.

Disclosure of Invention

The invention provides a pasting type insulin pump, which aims to solve the technical problems of large volume, inconvenience in use and unstable power output of the existing insulin pump.

The technical scheme adopted by the invention is as follows: the method comprises the following steps: an injection assembly for performing an injection procedure on a patient; the liquid pumping assembly comprises an electromagnetic driving assembly and an executing assembly, and the electromagnetic driving assembly is used for driving the executing assembly in an electromagnetic driving mode to control the injection assembly to inject liquid into a patient; and the control mainboard assembly is used for controlling the opening and closing of the pump liquid assembly.

Furthermore, the electromagnetic driving assembly comprises an electromagnetic coil assembly and a support, a buckle is arranged on the support and used for being connected with the executing assembly, the executing assembly is connected with the injection assembly, and the electromagnetic coil assembly is used for driving the support and driving the buckle to move by electrifying so as to drive the injection assembly to inject.

Furthermore, the executing assembly comprises a limiting device, a ratchet and pawl mechanism, a screw rod and a threaded sleeve, the ratchet and pawl mechanism comprises a ratchet wheel and a pawl, the limiting device is connected with the pawl and drives the pawl to reciprocate along the tangential direction of the ratchet wheel, the first end of the pawl is connected with the buckle, the ratchet wheel is connected with the screw rod, the screw rod is connected with a liquid pushing part in the injection assembly, the executing assembly drives the pawl to reciprocate by driving the electromagnetic driving assembly, and the pawl drives the ratchet wheel to rotate in a single direction so as to drive the screw rod to rotate in a stepping mode to push the liquid pushing part in the injection assembly to inject liquid medicine.

Furthermore, the ratchet pawl mechanism further comprises a ratchet sleeve and a rolling shaft, at least one group of ratchet sleeves are sleeved on the outer side of the rolling shaft, the ratchet wheels are sleeved on the outer sides of the ratchet sleeves, the pawls are arranged in one-to-one correspondence with the ratchet wheels, the pawl part at the second end of each pawl is in butt fit with the corresponding ratchet wheel, the pawls translate in a reciprocating mode to drive the ratchet wheels to perform one-way transmission, and the ratchet wheels drive the rolling shaft and the screw rods to rotate in one direction.

Furthermore, the injection assembly comprises a liquid storage assembly and a needle tube assembly, and an output end of the liquid storage assembly is communicated with an input end of the needle tube assembly.

Still further, the reservoir assembly includes a reservoir and a piston disposed within the reservoir.

Furthermore, the needle tube assembly comprises a needle tube and a needle tube control device, the needle tube is connected with the liquid storage assembly, and the needle tube control device is used for driving the needle tube to be implanted into a patient or pulled out of the patient.

Furthermore, the needle tube control device comprises a slide block component, an elastic component and an inclined plane stop block component, wherein a sliding part on the slide block component is connected with the needle tube; the inclined plane stop block assembly forces the sliding block on the sliding block assembly to reset through the prepressing elastic force applied by the elastic assembly and drives the needle tube to be implanted into the patient; the inclined plane block component overcomes the prepressing elasticity of the elastic component through the cooperation of the inclined plane to push the sliding part on the sliding block component to drive the needle tube to be implanted into the patient.

Furthermore, the sliding block assembly comprises a first sliding block, a second sliding block and a sliding rail, the first sliding block is connected with the needle tube, a first conduction groove is formed in the first sliding block, a second conduction groove is formed in the second sliding block, the outer side of the needle tube is sleeved with the rubber tube, the rubber tube and the needle tube can be arranged in a displacement mode, the second conduction groove is used for containing the rubber tube, an adaptive cavity is formed in the second sliding block, a protruding positioning portion is arranged on the rubber tube, the positioning portion is adaptive to the adaptive cavity, the needle tube penetrates into the rubber tube through the positioning portion, a blocking hole is formed in one end of the first sliding block, a spring thimble is arranged on one side of the second sliding block, and the inclined plane block assembly is located between the first sliding block and the second sliding block.

Furthermore, the control mainboard assembly is detachably connected, and the control mainboard assembly is electrically connected with the liquid pumping assembly.

The invention has the following beneficial effects:

(1) the invention adopts an electromagnetic driving mode to provide pump hydraulic power, does not need to use a motor, a reducer and other devices, ensures that the device has smaller volume, can select more injection parts, such as abdomen, limbs and the like, can reduce the possibility of complications caused by always injecting the same part, is beneficial to the miniaturization of the device by adopting the electromagnetic driving mode, is convenient for hiding an insulin pump, effectively protects the privacy of a patient, simultaneously reduces the use cost of the patient because of not needing the motor, the reducer and other devices, is convenient for popularizing the patient for type 2 diabetes and gestational diabetes patients, ensures that the power output is more stable, direct and reliable by adopting the electromagnetic driving, is beneficial to accurately controlling the insulin injection amount of the patient, and ensures the health of the patient.

(2) The most expensive control main board assembly is detachably connected in the shell, so that the control main board assembly can be recycled, and the use cost of a patient is further reduced.

(3) The invention has good waterproof effect by well sealing the front cover and the rear cover and matching with the sealing component arranged at the needle outlet, so that the body of a user can be used all the time when the body of the user needs to be in contact with water, and the user does not need to frequently take off and wear the needle, thereby facilitating the daily use of the user.

(4) The invention does not have a long catheter, but adopts a pasting mode to inject insulin to a user, thereby preventing the phenomenon that the catheter is easy to hang and entangle with other objects due to overlong length, and avoiding the condition that the patient is uncomfortable due to the long-time contact of the catheter and the body of the patient.

(5) The invention adopts the mode that the needle tube is inserted into the subcutaneous part of the patient when in use and is pulled out of the body of the patient when not in use to carry out the needle implantation operation on the user, thereby avoiding the phenomenon that the body of the user is severely painful due to the long-term storage of the needle head in the body of the patient and effectively reducing the possibility of the occurrence of complications caused by the long-term storage of the needle head in the body of the patient.

(6) Meanwhile, the whole body of the invention is designed in a mode of surrounding electromagnetic driving, so that the insulin pump is further miniaturized.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:

FIG. 1 is a first perspective view of a preferred embodiment of the present invention;

FIG. 2 is a second perspective view of the preferred embodiment of the present invention

FIG. 3 is a front view of the preferred embodiment of the present invention with the housing removed

FIG. 4 is a schematic diagram of the syringe control device of the preferred embodiment of the present invention.

The reference numbers illustrate:

front cover 11, back cover 12, liquid storage component 20, electromagnetic driving component 30 and application sheet 13

A needle tube control device 40, a control main board component 50, an energy component 60, a liquid storage cylinder 21, an execution component 22,

A needle tube 41, a rubber tube 42, a mounting rack 43, an elastic component 44, a slide block component 45,

Ramp block assembly 46, block 461, screw 441, herringbone arm 442, torsion spring 443,

a first link 4421, a second link 4422, a first slider 451, a second slider 452, a first slider,

Positioning portion 421, blocking hole 454, spring ejector 453, mounting case 31, bracket 32,

The buckle 33, the pawl 221, the ratchet wheel 222, the ratchet wheel sleeve 223, the sealant 422,

A flexible wiring board 70.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a patch type insulin pump, which includes a housing, a cavity is formed in the housing to accommodate and mount various components, an injection assembly is formed in the housing, the injection assembly includes a liquid storage assembly 20 and a needle tube assembly, the liquid storage assembly 20 is used for storing and providing liquid medicine for injection of a patient, one end of the liquid storage assembly 20 is connected with a pump assembly, the other end of the liquid storage assembly 20 is connected with the needle tube assembly, the pump assembly can convey the liquid medicine in the liquid storage assembly 20 to the needle tube assembly and finally inject the liquid medicine into the patient through the needle tube assembly for treatment, a control main board assembly 50 is formed in the housing to control the closing and specific operation processes of the pump assembly, and an energy assembly 60 for providing energy for the pump assembly and the control main board assembly 50 is further formed in the housing.

Referring to fig. 1, the housing includes a front cover 11 and a rear cover 12, the front cover 11 and the rear cover 12 can jointly form a cavity for accommodating and mounting parts, and a waterproof rubber ring can be arranged at the joint of the front cover 11 and the rear cover 12 to achieve a good waterproof effect.

Referring to fig. 3, the liquid storage assembly 20 includes a liquid storage cylinder 21 for containing a liquid medicine and a piston (not shown) fitted in the liquid storage cylinder 21, and the piston can push the liquid medicine in the liquid storage cylinder 21 out of the needle tube assembly when moving in the liquid storage cylinder.

Referring to fig. 1 and 3, the pumping assembly includes an electromagnetic driving assembly 30 and an executing assembly 22, one end of the executing assembly 22 is connected to the electromagnetic driving assembly 30, the other end of the executing assembly 22 is connected to a piston in the liquid storage cylinder 21, in a working state, the electromagnetic driving assembly 30 provides power for the executing assembly 22 so that one end of the executing assembly 22 connected to the piston pushes the piston to inject the liquid medicine into the patient body through the needle tube assembly for treatment, the electromagnetic driving assembly 30 includes a mounting box 31 and an electromagnetic coil assembly, the mounting box 31 is used for accommodating the electromagnetic coil assembly, the electromagnetic coil assembly includes an electromagnetic coil, a magnet and a bracket, the magnet includes two opposite magnets, the two opposite magnets are respectively arranged at two ends in the mounting box, the electromagnetic coil is fixed in the mounting box 31, the bracket is located at the top of the electromagnetic coil, and a buckle 33 is arranged on the bracket 32, the buckle 33 is used for connecting one end of the executing component 22, during operation, the electromagnetic coil is electrified to provide driving force for the executing component 22 through the bracket 32 and the buckle 33, and further the executing component 22 pushes the liquid medicine through the piston, compared with the prior art that expensive motor drive is adopted, the electromagnetic drive mode not only effectively saves the use cost, but also is convenient for the whole miniaturization of the device, because the electromagnetic drive insulin pump has small volume and is convenient for hiding, the electromagnetic drive insulin pump is not easy to be found and can avoid the different vision of normal people, simultaneously, the volume of the insulin pump is miniaturized and can be used for selecting more parts for injection by patients, such as abdomen, four limbs and other positions, and the cost of the insulin pump is lower, so that sick people can pay corresponding price, therefore, the insulin pump not only can be used in type 1 diabetes people, but also can expand type 2 diabetes and gestational diabetes people, has higher universality.

Referring to fig. 3, the executing assembly 22 includes a limiting device, a ratchet and pawl mechanism, a screw rod and a threaded sleeve, as shown in fig. 3, the housing is further provided with the limiting device, a pawl 221 on the ratchet and pawl mechanism is installed in cooperation with the limiting device, the displacement of the pawl is controlled by the limiting device, meanwhile, the limiting device limits that the pawl 221 can only reciprocate and translate along the tangential direction of the ratchet wheel 222, the housing is internally provided with the threaded sleeve, the threaded sleeve is connected with the screw rod in cooperation, the screw rod is connected with a piston in the liquid storage cylinder 21 through a liquid medicine push rod, one side of the liquid medicine push rod can be provided with a displacement sensor for monitoring the displacement of the push rod, so as to monitor the output quantity of the liquid medicine and ensure the high reliability of the whole system, the screw rod can drive the piston to move in the liquid storage cylinder when rotating so as to inject the liquid medicine into the patient, the roller is rotatably arranged in the housing, one end of the screw is connected with the roller, the other end of the screw is connected with the piston, the screw can be driven to rotate by the rotation of the roller to provide a driving force for the piston, the ratchet and pawl mechanism comprises a pawl 221, a ratchet 222, a ratchet sleeve 223 and the roller, the ratchet sleeve 223 is sleeved outside the roller, and preferably, the ratchet sleeve 223 is sleeved at two end parts of the roller respectively; the outside of the roller may also be fitted with one ratchet sleeve 223 or with more ratchet sleeves 223, e.g. three, four, etc.; the ratchet wheel 222 is arranged on the outer side of the ratchet wheel sleeve, the pawl 221 is arranged on the outer side of the ratchet wheel 222, the first end of the pawl 221 is connected with the buckle 33, the electromagnetic driving component 20 can drive the pawl 221 to reciprocate along the tangential direction of the ratchet wheel through the support and the buckle 33 when in operation, the other end of the pawl 221 corresponds to the plurality of ratchet wheels 222 and is in a double-claw or multi-claw shape so as to be respectively meshed with the ratchet wheels 222, and the pawl 221 is respectively meshed with the corresponding ratchet wheels 222, so that the transmission process is more stable and the transmission amount is more accurate when the pawl is meshed with the ratchet wheels, the ratchet wheels drive the screw rod to rotate quantitatively through the rolling shaft, the liquid medicine injection amount of a patient is accurately controlled, and meanwhile, due to the unidirectional transmission mechanism of the ratchet wheels, the screw rod can only perform unidirectional transmission, and the liquid medicine can be pushed out through the control piston.

Referring to fig. 3 and 4, the needle tube assembly comprises a needle tube 41, a rubber tube 42 and a needle tube control device 40 for driving the implantation and extraction of a needle head in the needle tube assembly, the needle head of the needle tube 41 is preferably a stainless steel needle head to reduce possible bacterial infection, the needle tube 41 is connected with the liquid storage assembly 20 through a hose, and the liquid is supplied to the needle tube by the liquid storage assembly 20; the rubber tube 42 is sleeved outside the needle tube 41, the needle tube 41 and the rubber tube 42 can move relatively, when a patient needs to be injected, the needle tube control device 40 controls the needle head of the needle tube 41 to extend out of the rubber tube 42, after the injection is completed, the needle tube control device 40 controls the needle head on the needle tube 41 to be retracted into the rubber tube 42 again, and the pain of the patient caused by the fact that the needle head exists in the body for a long time is reduced; the rear cover 12 is provided with an application sheet 13 at one side of the shell which is attached to the body of a patient, the application sheet 13 is provided with a pinhole for a needle head on the needle tube 41 to penetrate through for injecting medicine to the patient, the application mode replaces the use of a long catheter, and the phenomena that the catheter rubs with the body of the user when the long catheter is used, the long catheter is possibly hung on other objects and the like to cause discomfort of the user are avoided.

Referring to fig. 4, the syringe control apparatus 40 includes a mounting frame 43, a slider assembly 45, a bevel stopper assembly 46, an elastic assembly 44, the mounting frame 43 is disposed inside the housing, the elastic assembly 44 includes a screw 441, a screw 441 is mounted at one end of the mounting frame 43, a torsion spring 443 is sleeved outside the screw 441, a herringbone arm 442 is rotatably connected to an outer side of the screw 441, two arms of the herringbone arm 442 are rotatably connected, rotation of the torsion spring drives the herringbone arm 442 to extend or retract, the herringbone arm 442 includes a first link 4421 rotatably connected to an outer side of the screw 441, a second link 4422 rotatably connected to the first link 4421, an outer end of the second link 4422 is rotatably connected to a sliding portion of the slider assembly 45, the slider assembly 45 includes a first slider 451, a second slider 452 and a sliding track, an outer end of the second link 4422 is rotatably connected to the first slider 451, the second link 4422 drives the first slider 451 to slide on the sliding track of the slider assembly, a bevel stop block assembly 46 penetrates through the shell, a stop block 461 is connected to one end, located inside the shell, of the bevel stop block assembly 46, the stop block 461 is located between the first sliding block and the second sliding block, and the stop block is divided into two using states, namely when the bevel stop block assembly 46 is pulled outwards, the stop block 461 is pulled away from between the first sliding block 451 and the second sliding block 452, and at the moment, the torsion spring is rotated to reset, and in the resetting process of the torsion spring, the herringbone arm is driven to extend so as to push the first sliding block 451 and the second sliding block 452 to move on the sliding rail; the other is that when the inclined stop assembly 46 is pressed down, the stop 461 pushes the first slider 451 to reset, so that the contact position between the stop 461 and the first slider 451 is inclined plane fit, which is convenient for resetting the first slider 451, when the stop pushes the first slider to completely reset, the stop 461 is located between the first slider 451 and the second slider 452 to separate them, at this time, the torsion spring is twisted, and the torsion spring has a tendency of pushing the first slider 451 to move in a reset manner, so as to accumulate force for pushing the first slider 451 next time; the first slider 451 is provided with a first conduction groove, the second slider 452 is provided with a second conduction groove, the second conduction groove is used for accommodating the rubber tube 42, the second slider 452 is provided with an adaptation cavity, the rubber tube 42 is provided with a positioning part 421 protruding out of the rubber tube 42, the positioning part 421 is adapted in the adaptation cavity, and the needle tube 41 penetrates into the rubber tube 42 through the positioning part 421.

Preferably, after the injection is completed, the rubber tube 42 is retained in a reserved tube on the skin of the patient, the needle tube 41 is retracted into the housing, so as to avoid the problem of complications caused by the needle remaining in the patient, specifically, a blocking hole 454 is formed in one end of the second slider 452, which is away from the first slider 451, a spring ejector pin 453 is correspondingly arranged on the front cover 11, after the second slider 452 slides to a certain position, the spring ejector pin 453 is ejected and inserted into the blocking hole 454, the second slider 452 is fixed, so that the rubber tube 42 is not driven to retract, the first slider 451 is reset to retract under the contraction action of the herringbone arm, the needle tube 41 is finally retracted into the rubber tube 42, and when the next injection is performed, the needle tube 41 is pushed out by pushing the first slider 451 through the operation of the button 46.

Referring to fig. 1 and 2, the control main board assembly 50 is installed in the housing in a detachable connection mode, preferably, the detachable connection mode is a screw connection mode, and as the control main board assembly 50 is detachably connected, after the device is used, the most expensive control main board assembly 50 can be detached for reuse, compared with the prior art, the reuse mode of the device greatly reduces the use cost of the device, reduces the medical expense of a patient, improves the universality of an insulin pump, and the control main board assembly 50 can be connected with an APP through bluetooth or a wireless network, so that the patient can conveniently control the operation of the device through the APP operation, and can also control the device through a control panel on the housing; the shell can be internally provided with components such as a flexible circuit board 70 which can be communicated with the control mainboard assembly 50, the energy assembly 60 and the pumping assembly, so that the normal operation of a circuit system of the device is ensured; when detecting that the patient needs to inject insulin, the inclined plane stop block assembly is controlled to remove the limitation on the first sliding block, the needle tube assembly is inserted into the subcutaneous part of the patient, then the electromagnetic driving assembly 20 is started to provide power for the execution assembly 22, so that the liquid medicine in the liquid storage assembly 20 is injected into the body of the patient through the needle tube assembly, after injection is completed, the inclined plane stop block assembly pushes the first sliding block to reset, the first sliding block drives the needle tube to be pulled out of the body of the patient, and the next injection is convenient.

In this embodiment, the application-type insulin pump further comprises a driving reset mechanism, and the driving reset mechanism comprises a charging element detachably connected with the energy source assembly 60 for supplying energy to the energy source assembly 60, and a reset element detachably connected with the executing assembly 22 for extending the screw rod to push the screw rod to retract and reset. Specifically, the energy source assembly 60 provides working electric energy to the control main board assembly 50, so that the control main board assembly 50 controls the execution assembly 22 to work, further the screw rod of the execution assembly 22 extends to push against the piston to inject the liquid medicine into the patient, after the liquid medicine injection is completed, the screw rod is separated from the piston, at this time, the piston is disposed by adopting a proper mode, the energy source assembly 60 is connected with a charging piece in the driving reset mechanism to store enough electric energy, meanwhile, the execution assembly 22 is connected with a reset piece in the driving reset mechanism to extend, push against and contract and reset the screw rod, so that the energy source assembly 60, the control main board assembly 50 and the execution assembly 22 are restored to an initial state to be assembled with a new piston, and then the injection for the patient can be performed again, and only the necessary liquid storage cylinder 21 and the needle tube assembly are disposed under the condition of satisfying the relevant regulations of the medical equipment, can realize the repeated use of the pasting type insulin pump, and reduce the use cost of the patient to the maximum extent.

The energy component 60 can be an energy supply member such as a button cell and the like which is convenient for miniaturization, so that the design key points of the invention are more fitted, the overall miniaturization design of the invention is convenient, and meanwhile, the energy component 60 can also be an external power supply, so that the space occupied by the energy component is saved.

It is worth mentioning that the position close to the end of the rubber tube 42 is sleeved with a sealing colloid 422, the sealing colloid 422 is located at the joint of the rubber tube 42 and the applying sheet 13, and the arrangement of the sealing colloid can prevent liquid from flowing into the shell, so as to achieve a good waterproof effect.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An application type insulin pump is characterized by comprising

An injection assembly for performing an injection procedure on a patient;

the pump liquid assembly comprises an electromagnetic driving assembly (30) and an executing assembly (22), wherein the electromagnetic driving assembly (30) is used for driving the executing assembly (22) in an electromagnetic driving manner to control the injection assembly to inject the patient;

and the control main board assembly (50) is used for controlling the opening and closing of the liquid pumping assembly (50).

2. The application type insulin pump as claimed in claim 1, wherein the electromagnetic driving component (30) comprises an electromagnetic coil component and a bracket (32), a buckle (33) is arranged on the bracket (32), the buckle (33) is used for connecting the executing component (22), the executing component (22) is connected with the injection component, and the electromagnetic coil component is used for driving the bracket (32) and driving the buckle (33) to move by electrifying so as to drive the injection component to inject.

3. The application-type insulin pump according to claim 2, wherein the actuating assembly (22) comprises a limiting device, a ratchet-pawl mechanism, a screw rod and a threaded sleeve, the ratchet wheel and pawl mechanism comprises a ratchet wheel (222) and a pawl (221), the limiting device is connected with the pawl (221) and drives the pawl (221) to reciprocate and translate along the tangential direction of the ratchet wheel (222), the first end of the pawl (221) is connected with the buckle (33), the ratchet wheel (222) is connected with the screw rod, the screw rod is connected with a liquid pushing part in the injection assembly, by driving the electromagnetic driving component (30) to enable the executing component (22) to drive the pawl to make reciprocating translation, the pawl (221) drives the ratchet wheel (222) to rotate in a single direction so as to drive the screw to rotate in a stepping mode to push the liquid pushing portion in the injection assembly to further perform liquid medicine injection.

4. The application type insulin pump according to claim 3, wherein the ratchet wheel and pawl mechanism further comprises a ratchet wheel sleeve (223) and a rolling shaft, at least one set of ratchet wheel sleeve (223) is sleeved outside the rolling shaft, the ratchet wheel (222) is sleeved outside the ratchet wheel sleeve (223), the pawls (221) and the ratchet wheel (222) are arranged in a one-to-one correspondence manner, a pawl portion at the second end of each pawl (221) is in butt fit with the corresponding ratchet wheel (222), the pawls (221) are translated in a reciprocating manner to drive the ratchet wheel (222) to perform one-way transmission, and the ratchet wheel (222) drives the rolling shaft and the screw rod to rotate in one-way.

5. The application-type insulin pump according to claim 1, wherein the injection assembly comprises a reservoir assembly (20) and a needle assembly, and the output end of the reservoir assembly (20) is communicated to the input end of the needle assembly.

6. The application-type insulin pump according to claim 5, wherein the reservoir assembly (20) comprises a reservoir (21) and a piston disposed within the reservoir (21).

7. The application-type insulin pump according to claim 5, wherein the needle tube assembly comprises a needle tube (41) and a needle tube control device (40), the needle tube (41) is connected with the liquid storage assembly (20), and the needle tube control device (40) is used for driving the needle tube (41) to be implanted into or pulled out of the patient.

8. The application type insulin pump of claim 7, wherein the needle tube control device (40) comprises a slide block assembly (45), an elastic assembly (44) and a bevel block assembly (46), the sliding part of the slide block assembly (45) is connected with the needle tube (41); the inclined plane block assembly (46) forces the slide block on the slide block assembly (45) to reset through the pre-pressing elastic force applied by the elastic assembly (44) and drives the needle tube (41) to be implanted into the patient; the inclined plane block component (46) overcomes the pre-pressing elasticity of the elastic component (44) through the cooperation of the inclined plane to push the sliding part on the sliding block component (45) to drive the needle tube (41) to be implanted into the patient.

9. The applied insulin pump according to claim 8, wherein the slider assembly (45) comprises a first slider (451), a second slider (452) and a slide rail, the first slider (451) is connected with the needle tube (41), the first slider (451) is provided with a first conduction groove, the second slider (452) is provided with a second conduction groove, the needle tube (41) is sleeved with a rubber tube (42) and the needle tube (41) can be relatively displaced, the second conduction groove is used for accommodating the rubber tube (42), the second slider (452) is provided with an adaptation cavity, the rubber tube (42) is provided with a protruding positioning part (421), the positioning part (421) is adapted to the adaptation cavity, the needle tube (41) penetrates into the rubber tube (42) through the positioning part (421), one end of the second slider (452) far away from the first slider (451) is provided with a blocking hole (454), a spring ejector pin (453) is arranged on one side of the second sliding block (452), and the inclined plane stop block assembly (46) is located between the first sliding block (451) and the second sliding block (452).

10. The applied insulin pump according to any one of claims 1 to 9, wherein the control main board assembly (50) is detachably connected, and the control main board assembly (50) is electrically connected with the pump fluid assembly.