CN117205399A

CN117205399A - Injection device

Info

Publication number: CN117205399A
Application number: CN202210625586.5A
Authority: CN
Inventors: 雷亚平; 王勇; 刘福林; 余鹏; 任儒; 刘平芳; 柯全; 黄奇; 王善宇; 张黎玮; 张宏超; 张锡俊; 赵薇; 高志军
Original assignee: Chongqing Jinsaixing Medical Technology Co ltd
Current assignee: Chongqing Jinsaixing Medical Technology Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2023-12-12
Also published as: WO2023232141A1

Abstract

The invention relates to the technical field of medicine injection, and provides an injection device which comprises a main body, a medicine bin, a push injection component and a controller; the main body is provided with a pushing outlet, the pushing component is arranged in the main body and corresponds to the pushing outlet, and the controller is arranged in the main body and is in circuit connection with the pushing component for controlling the extension and retraction of the pushing component; the medicine bin is provided with a pushing inlet, the medicine bin is detachably connected to the main body, the pushing inlet corresponds to the pushing outlet, and a fixing seat suitable for placing the card bottle is arranged in the medicine bin. When the pushing and injecting assembly moves along the pushing outlet to the pushing inlet, the liquid medicine in the card bottle can be injected into a patient. After the injection of the liquid medicine is finished, the medicine bin and the main body can be separated, and then the medicine bin and the card-type bottle in the medicine bin are put into a refrigerator for refrigeration. The medicine bin is convenient to assemble and disassemble with the main body, so that the medicine bin is convenient for patients to use, and meanwhile, the electronic elements in the main body cannot be damaged.

Description

Injection device

Technical Field

The invention relates to the technical field of medicine injection, in particular to an injection device.

Background

Currently, in the treatment of some diseases, it is necessary to administer drugs (e.g., growth hormone, insulin, etc.) to the patient on time, such drugs being typically administered by self-injection. Since the medication needs to be refrigerated, the cartridge needs to be removed from the injection device and placed in the refrigerator, or the entire injection device is placed in the refrigerator. When the single injection dosage is small, the card bottle needs to be frequently detached from and installed in the injection device, and great trouble is brought to the aged users with inflexible hands and feet. The entire injection device is directly placed in a refrigerator, and the high humidity in the refrigerator may affect the performance and service life of electronic components in the injection device.

Disclosure of Invention

The present invention is directed to solving at least one of the technical problems existing in the related art. Therefore, the injection device provided by the invention comprises the main body and the medicine bin which are detachably connected, the card-type bottle and the medicine bin can be put into a refrigerator for refrigeration, the medicine bin and the main body are convenient to assemble and disassemble, the use of a patient is convenient, and meanwhile, the damage to electronic elements in the main body is avoided.

According to an embodiment of the present invention, there is provided an injection device including:

a main body formed with a push outlet;

a bolus assembly disposed within the body and corresponding to the bolus outlet;

the controller is arranged in the main body and is electrically connected with the push injection assembly;

the medicine bin is provided with a pushing inlet, the medicine bin is detachably connected to the main body, the pushing inlet corresponds to the pushing outlet, and a fixing seat suitable for placing a card bottle is arranged in the medicine bin.

According to one embodiment of the present invention, further comprising:

the prompting component is arranged in the main body and/or the injection key and is electrically connected with the controller.

According to one embodiment of the present invention, further comprising:

the temperature sensor is arranged at the pushing outlet and is electrically connected with the controller, the temperature sensor comprises an induction end, the induction end is suitable for being abutted against the clamping bottle in the fixing seat, and the temperature sensor is suitable for acquiring the temperature of the clamping bottle and the liquid medicine;

And/or a first pressure sensor arranged at the pushing outlet and electrically connected to the controller, wherein the first pressure sensor is suitable for acquiring the pressure when the main body is in contact with the medicine bin;

and/or a second pressure sensor connected to a side of the bolus assembly facing away from the bolus outlet and electrically connected to the controller, the second pressure sensor being adapted to obtain a bolus pressure of the bolus assembly;

and/or a third pressure sensor is arranged at one end of the medicine bin, which is away from the pushing inlet, and the third pressure sensor is suitable for acquiring the contact pressure between the injection device and the skin.

According to one embodiment of the invention, the side wall of the main body is provided with a holding part matched with fingers, and the holding part can be in a groove structure, the groove can be recessed by 5-6mm, so that the holding part is easier to stabilize and control during holding, and the surface is made of anti-skid materials.

According to one embodiment of the invention, the side wall of the body is provided with a power key, the side of the power key facing away from the body being recessed relative to the side wall of the body.

According to one embodiment of the invention, the main body is provided with an injection key, and a prompt component such as an LED lamp, a buzzer and the like and a combination are arranged in the injection key; and/or externally provided with tactile means such as depressions, protrusions, and the like, as well as combinations thereof.

According to one embodiment of the invention, the bolus assembly comprises:

the bracket is arranged in the main body and is connected with the main body;

the driving motor is connected to the bracket and is electrically connected to the controller, a lead screw is formed at the output end of the driving motor, and the axis of the lead screw corresponds to the center of the pushing outlet;

the screw rod sleeve is rotationally connected with the screw rod and is positioned at one side of the driving motor facing the pushing outlet;

and the screw sleeve limiting piece is used for limiting the rotation of the screw sleeve.

According to one embodiment of the invention, the bolus assembly further comprises:

the sliding resistance-changing component is in transmission connection with the screw sleeve and is electrically connected with the controller;

and/or an encoder connected to the driving motor and electrically connected to the controller.

According to one embodiment of the invention, a liquid outlet is formed on one side of the medicine bin, which faces away from the pushing inlet, and an external thread suitable for being connected with a needle is formed on one end of the fixing seat, which faces towards the liquid outlet.

According to one embodiment of the invention, a clamping bottle fixing plug is detachably connected to one end of the fixing seat, which faces the pushing inlet.

According to one embodiment of the present invention, the sidewall of the medicine compartment is formed with a chute, and the injection device further comprises:

the hidden needle sleeve is connected with the liquid outlet in a sliding manner;

at least one sliding piece connected to the inner wall of the medicine bin, the sliding piece extending along the sliding direction of the hidden needle sleeve, the hidden needle sleeve being slidingly connected to the sliding piece;

at least one elastic piece, the said elastic piece connects to said hidden needle sleeve and said medicine storehouse;

the poking piece is connected with the sliding groove in a sliding way and is connected with the hidden needle sleeve in a transmission way.

According to one embodiment of the invention, the fixing seat is provided with a first observation window, the medicine bin is provided with a second observation window, and the first observation window corresponds to the second observation window.

According to one embodiment of the invention, the pushing outlet is provided with a connecting piece, which is adapted to be plugged into the pushing inlet;

the outer side wall of the connecting piece is provided with a first sliding groove and a second sliding groove which are communicated with each other, an included angle is formed between the first sliding groove and the second sliding groove, and the first sliding groove extends to the edge of the connecting piece;

the inner wall of the medicine bin is provided with a boss.

According to one embodiment of the invention, the inner wall of the medicine bin is provided with a plate spring, the plate spring is provided with an elastic bulge, and the outer side wall of the connecting piece is provided with a locking groove;

the elastic protrusion is inserted into the locking groove when the boss is positioned at the end of the second sliding groove.

The invention also provides a control method of the injection device, comprising one or more of the following combinations:

1) A temperature control method;

2) An automatic exhaust control method;

3) A skin contact control method;

4) A hidden needle control method.

The above technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the injection device provided by the embodiment of the invention comprises a main body, a medicine bin, a push injection component and a controller; the main body is provided with a pushing outlet, the pushing component is arranged in the main body and corresponds to the pushing outlet, and the controller is arranged in the main body and is in circuit connection with the pushing component for controlling the extension and retraction of the pushing component; the medicine bin is provided with a pushing inlet, the medicine bin is detachably connected to the main body, the pushing inlet corresponds to the pushing outlet, and a fixing seat suitable for placing the card bottle is arranged in the medicine bin. When the pushing and injecting assembly moves along the pushing outlet to the pushing inlet, the liquid medicine in the card bottle can be injected into a patient. After the injection of the liquid medicine is finished, the medicine bin and the main body can be separated, and then the medicine bin and the card-type bottle in the medicine bin are put into a refrigerator for refrigeration. The medicine bin is convenient to assemble and disassemble with the main body, so that the use of a patient is facilitated, and meanwhile, the damage to the electronic element in the main body is avoided, and the service life of the injection device is prolonged. The injection key provided by the invention is internally provided with the prompt component, such as the LED lamp, the buzzer and the like and the combination, and/or is externally provided with the touch sense setting, such as the concave, the convex and the like and the combination, and the most abundant and most timely information feedback is provided for a user by integrating the multi-sense feedback of touch sense, light, sound, vibration and the like to the key, so that the user does not need to actively search the position, and the monitoring and the feedback of the one-hand one-key operation state are matched, thereby improving the usability and the usability of the product, reducing the learning cost of the user, and preventing the risks of use errors caused by misoperation or untimely operation and the like in the use process.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a perspective view of an injection device according to an embodiment of the present invention;

FIG. 2 is a second perspective view of an injection device according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an injection device according to an embodiment of the present invention;

FIG. 4 is a perspective view of a body provided by an embodiment of the present invention;

FIG. 5 is a perspective view of a cartridge provided by an embodiment of the present invention;

FIG. 6 is an internal schematic view of an injection device provided in an embodiment of the present invention;

fig. 7 is an exploded view of an injection device provided by an embodiment of the present invention.

Reference numerals:

100. a main body; 102. a push outlet; 103. a connecting piece; 1031. a first sliding groove; 1032. a second sliding groove; 1033. a locking groove; 104. a grip portion;

120. A medicine bin; 1201. a chute; 1202. a second viewing window; 121. a boss; 122. a push inlet; 123. a leaf spring; 1232. an elastic protrusion; 124. a fixing seat; 1242. a through hole; 1244. an external thread; 1246. a first viewing window; 126. a clip-on bottle securing plug; 128. a liquid outlet;

140. a temperature sensor;

160. a controller; 162. a power key; 166. an injection key; 168. type C cover;

180. a prompting component; 182. a buzzer; 184. a display screen;

200. a card bottle; 202. a bottle body; 204. a bottle stopper;

220. a bolus assembly; 222. a bracket; 224. a driving motor; 225. a second pressure sensor; 226. a screw rod; 227. a screw sleeve end cover; 228. a screw sleeve; 229. a screw sleeve limiting piece; 230. a sliding resistance variable member;

240. a needle-hiding sleeve; 242. a slider; 244. an elastic member; 246. a toggle member;

260. and a third pressure sensor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, based on the embodiments of the invention, which would be apparent to one of ordinary skill in the art without making any inventive effort are intended to be within the scope of the invention.

In the description of the embodiments of the present invention, it should be noted 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 orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus 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 embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.

In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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 embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the related art, since the medicine needs to be refrigerated, it is necessary to take out the cartridge from the injection device and place it in the refrigerator, or to place the entire injection device in the refrigerator. When the single injection dosage is small, the card bottle needs to be frequently detached from and installed in the injection device, and great trouble is brought to the aged users with inflexible hands and feet. The entire injection device is directly placed in a refrigerator, and the high humidity in the refrigerator may affect the performance and service life of electronic components in the injection device.

Referring to fig. 1 to 7, an injection device according to an embodiment of the present invention includes a main body 100, a medicine compartment 120, a bolus assembly 220, and a controller 160.

The main body 100 is a driving and controlling part of the injection device, and is internally provided with a controller 160, a bolus assembly 220, etc., the bolus assembly 220 is electrically connected to the controller 160, and the bolus assembly 220 can perform electric bolus operation on the liquid medicine in the cartridge type bottle 200. The main body 100 is formed with a pushing outlet 102, and the pushing assembly 220 corresponds to the pushing outlet 102 and can perform telescopic movement at the pushing outlet 102, so as to realize injection of liquid medicine.

The cartridge 120 is formed with a push inlet 122, and the cartridge 120 is detachably connected to the main body 100, and the push inlet 122 corresponds to the push outlet 102. The medicine compartment 120 is provided with a fixing seat 124, the fixing seat 124 is a tubular structure with two through ends, and the fixing seat 124 is suitable for placing the card bottle 200. One end of the holder 124 corresponds to the push inlet 122, and the tail of the cartridge 200 may be in contact with the bolus assembly 220, with the other end of the holder 124 facing away from the push inlet 122 for mounting a needle or the like.

The controller 160 includes a main PCBA and a central processor mounted on the main PCBA.

According to the injection device provided by the embodiment of the invention, the main body 100 is detachably connected with the medicine bin 120, after the medicine liquid is injected, the medicine bin 120 and the main body 100 can be separated, and then the medicine bin 120 and the cartridge bottle 200 in the medicine bin 120 are put into a refrigerator for refrigeration. The medicine bin 120 is convenient to assemble and disassemble with the main body 100, is convenient for patients to use, can not damage electronic elements in the main body 100, and is beneficial to prolonging the service life of the injection device.

In some embodiments, the injection device includes a reminder assembly 180, the reminder assembly 180 being disposed within the body 100 and/or within the injection key 166 and being electrically connected to the controller 160, the reminder assembly 180 may issue a reminder message to alert a user to the injection status of the medical fluid.

The reminder assembly 180 includes at least one of a buzzer 182, a display 184, and an LED component that may be disposed within the injection key 166, the display 184 being attached to an exterior sidewall of the body 100, the buzzer 182 may be disposed within the body 100, and/or within the injection key 166. The buzzer 182 prompts the user to pay attention to the injection state of the liquid medicine through vibration and sound, the display screen 184 can prompt the user to pay attention to the injection state of the liquid medicine through colors, symbols and characters, the LED component can prompt the user to pay attention to faults such as the injection state of the liquid medicine, insufficient electric quantity and the like through lights of different colors, and the LED component ensures that light is evenly transmitted.

When the reminder assembly 180 includes an LED assembly, the LED assembly may display green, yellow, red lights, respectively representing a ready state, a reminder state, an alarm state.

It should be noted that, the prompting component 180 can send out various prompting information according to the injection state, and includes characters, colors, sounds, etc. at the same time, which is convenient for the user to use.

In some embodiments, the reminder assembly 180 can be combined with the injection key 166, and the injection process can be controlled by adjusting the circuit on-off state of the injection key 166 by providing the injection key 166 on the outer side wall of the main body 100. An indication component 180 is arranged in the injection key 166, and the indication component 180 can send out indication information according to the on-off state of a circuit of the injection key 166 or the injection state of the injection device.

Where the reminder assembly 180 includes a buzzer 182, a display 184, and an LED component, at least one of the buzzer 182, the display 184, and the LED component is disposed within the injection key 166.

In the first case, an LED component is provided within the injection key 166, which may display green, yellow, red lights, indicating a ready state, a prompt state, an alarm state, respectively. The number of LED elements may be plural, and plural LED elements may be provided at different positions of the injection key 166, for example, one LED element may be provided at each end of the injection key 166, and two LED elements may display the same color or different colors.

It should be noted that the LED component may also display other colors, such as blue, to alert the user that a critical operation is in progress.

In another case, a buzzer is provided in the injection key 166 to interact with the user through sound and vibration, for example, the buzzer indicates a ready state once, the buzzer indicates a prompt state at continuous intervals, the buzzer indicates an alarm state at continuous high intensity, and the user can acquire related prompt information according to the sound and the touch feeling of the finger.

In other embodiments, injection key 166 is provided with a micro-display screen for displaying injection volume information, electrical volume information, etc., which may be presented with associated status information by simple symbols, text, or images.

To make the injection device overall attractive and compact, the end surface of injection key 166 facing away from main body 100 is flush with the outer side wall of main body 100, and the end surface of injection key 166 is provided with tactile structures, such as depressions, protrusions, etc. and combinations, by which a user can determine the position of injection key 166. The tactile structure forms tactile feedback that a user can find and operate with one hand.

Through integrating multiple perception feedback such as touch sense, light, sound, vibration, display and the like in a key, the most abundant and timely information feedback is provided for a user, the position is not required to be actively found, the monitoring and feedback of the single-hand one-key operation state are matched, the usability and usability of the product are improved, the learning cost of the user is reduced, and the risk of use errors caused by misoperation or untimely operation and the like in the use process is prevented.

In some embodiments, bolus assembly 220 includes a holder 222, a drive motor 224, a lead screw 226, a lead screw sleeve 228, and a lead screw sleeve limiter 229.

The bracket 222 is disposed in the main body 100 and is connected to an inner wall of the main body 100. The driving motor 224 is mounted on the bracket 222 and electrically connected with the controller 160, and the controller 160 can control the rotation speed and the rotation angle of the driving motor 224, so as to precisely control the injection process of the liquid medicine.

In some embodiments, bolus assembly 220 includes a holder 222, a drive motor 224, a lead screw housing 228, and a lead screw housing limiter 229.

The output end of the driving motor 224 is formed with a screw rod 226, and the axis of the screw rod 226 corresponds to the center of the pushing outlet.

The screw rod sleeve 228 is rotatably connected to the screw rod 226, and the screw rod sleeve 228 is located at one side of the driving motor 224 near the pushing outlet 102, and is used for pushing the bottle stopper 204 to discharge gas or liquid medicine.

The screw housing 228 is further connected to a screw housing stopper 229, the screw housing stopper 229 is connected to the bracket 222 or the inner wall of the main body 100, and the screw housing stopper 229 can rotate the screw housing 228 relative to the screw 226, but limits the rotation of the screw housing 228 itself. When the driving motor 224 rotates, the screw rod 226 rotates, and the screw rod sleeve 228 moves back and forth relative to the screw rod 226. The screw housing 228 may be used to inject the drug solution in the cartridge 200 into the patient when the screw housing is positioned adjacent to the push outlet 102 and the push inlet 122.

In some embodiments, the outer profile of the screw sleeve 228 is prismatic, the screw sleeve limiter 229 is formed with a prismatic limiting aperture, and the screw sleeve 228 is threaded into the limiting aperture. When the screw 226 rotates, the screw sleeve 228 can move back and forth in the limiting hole, but cannot rotate.

In other embodiments, the screw sleeve limiter 229 is a limiting block disposed on an outer side wall of the screw sleeve 228, and the bracket 222 is provided with a limiting groove, where the limiting block is slidably connected to the limiting groove. When the screw rod 226 rotates, the screw rod sleeve 228 moves back and forth relative to the bracket 222, the limiting block slides relative to the limiting groove, and the screw rod sleeve 228 cannot rotate.

In some embodiments, bolus assembly 220 further comprises a lead screw housing end cap 227, lead screw housing end cap 227 connected to an end of lead screw housing 228 facing away from drive motor 224, lead screw housing end cap 227 for direct contact with stopper 204 of cartridge bottle 200.

First, the end of the screw sleeve 228 is blocked by the screw sleeve end cover 227, so that external impurities can be prevented from entering the screw sleeve 228, the screw 226 and the screw sleeve 228 are prevented from being interfered by the impurities when rotating, and the injection precision of the push injection assembly 220 is improved. Secondly, the screw sleeve end cover 227 can prevent water or electrolyte solution from entering the screw sleeve 228, so that the screw 226 and the screw sleeve 228 are prevented from being corroded, and the service life of the injection device is prolonged. Furthermore, the screw sleeve end cover 227 has a larger friction coefficient towards one end of the cartridge bottle 200, can be stably contacted with the bottle stopper 204 of the cartridge bottle 200, can ensure that the bottle stopper 204 stably moves in the bottle body 202, improves the stability of the injection process, and can accurately control the injection quantity of the medicine.

In some embodiments, bolus assembly 220 further includes a sliding resistance variable member 230, sliding resistance variable member 230 drivingly coupled to lead screw housing 228 and electrically coupled to controller 160.

It will be appreciated that the sliding resistance variable member 230 includes a resistance variable structure, and that the resistance value of the sliding resistance variable member 230 may be changed by changing the position of the screw housing 228 as it moves. Through early experiments and accurate calculations, the controller 160 may determine the position of the screw housing 230 according to the resistance value of the sliding resistance variable member 230, thereby controlling the injection process.

The sliding varistor part 230 includes a sliding varistor PCBA electrically connected to the main PCBA through FPC flexible flat cables.

In other embodiments, bolus assembly 220 further includes an encoder coupled to drive motor 224 and electrically coupled to controller 160.

The encoder may record the rotation speed and the number of rotations of the driving motor 224, and the controller 160 may control the injection speed and the injection amount by controlling the rotation speed and the number of rotations of the driving motor 224. When the sliding resistance variable member 230 is used at the same time, the sliding resistance variable member 230 can provide position feedback, thereby realizing closed-loop control, and improving injection precision.

In some embodiments, the injection device further includes a temperature sensor 140, where the temperature sensor 140 is disposed in the main body 100 and is installed at the pushing outlet 102, and the temperature sensor 140 includes a sensing end, and when the main body 100 is connected with the drug storage 120, the sensing end may abut against the cartridge 200 in the fixing seat 124, so as to directly detect the temperature of the cartridge 200 and the drug solution.

The controller 160 is disposed in the main body 100 and electrically connected to the temperature sensor 140, and the controller 160 can obtain temperature information of the cartridge 200 and the chemical solution.

The prompt component 180 can send out prompt information to remind the user of paying attention to the temperature of the liquid medicine, and avoid the temperature of the liquid medicine exceeding the preset use temperature, thereby affecting the curative effect of the liquid medicine.

When the prompt unit 180 includes the buzzer 182 and the display 184, the buzzer 182 prompts the user to notice the temperature state of the medicine liquid through vibration and sound, and the display 184 prompts the user to notice the temperature state of the medicine liquid through color, symbol and contents. Meanwhile, the display screen 184 can accurately display the dosage of the residual liquid medicine in real time, the injection dosage can be set before injection, and when the set injection dosage is larger than the residual dosage, the display screen 184 can give a prompt to cancel the injection or continue the injection. If the injection is selected to continue, the display 184 also indicates how many doses are not being injected, and the card bottle 200 needs to be replaced to complete the injection, so as to ensure the accuracy of the injected doses. After replacement of the cartridge 200, the display 184 displays the remaining dose for subsequent use. In addition, the display 184 may display information such as the remaining power, injection speed, and status.

The medical fluid needs to be refrigerated at a low temperature, and after the injection is completed, the user may forget to detach the medicine compartment 120 and put it into the refrigerator. The temperature sensor 140 may directly detect the temperature of the cartridge 200 and the medical fluid and transmit temperature information to the controller 160. The controller 160 gives an instruction to the prompt unit 180, and the prompt unit 180 prompts the user to put the medicine compartment 120 back to the refrigerator for preservation through sound, vibration, color or text information, and the injection operation can be prohibited.

In the embodiment of the invention, the temperature sensor 140 is directly contacted with the card bottle 200 in the fixing seat 124, so that the temperature of the card bottle 200 and the liquid medicine can be directly detected, but not the ambient temperature, the measurement result is more accurate, and the condition that the curative effect of the liquid medicine changes can be avoided.

The first temperature threshold is smaller than the second temperature threshold, the safe use temperature is between the first temperature threshold and the second temperature threshold, and the unsafe use temperature is smaller than the first temperature threshold or larger than the second temperature threshold.

When the temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the liquid medicine temperature meets the requirements, the prompting component 180 prompts the user to use with confidence, and the injection work can be started.

When the temperature is less than the first temperature threshold or greater than the second temperature threshold, the temperature of the medical fluid is not satisfactory, and the prompting component 180 prompts the user to give up the injection or put the medical fluid back into the refrigerator for refrigeration in time.

In some embodiments, the fixing base 124 is a cylindrical structure with two through ends, a card bottle accommodating cavity is formed in the fixing base 124, a through hole 1242 communicating with the card bottle accommodating cavity is formed in the fixing base 124, and the temperature sensor 140 has elasticity, so that the sensing end can be penetrated into the through hole 1242 under the action of the elasticity.

The sensing end of the temperature sensor 140 is abutted against the cartridge bottle 200 in the fixing seat 124, so that the temperature of the cartridge bottle 200 and the liquid medicine can be directly detected.

In some embodiments, a first pressure sensor is optionally provided at the push outlet 102, the first pressure sensor being electrically connected to the controller 160.

The stable connection of the main body 100 and the medicine bin 120 is a precondition for developing injection work, and related to the problems of circuit connection, injection precision and the like, the stable connection of the main body 100 and the medicine bin 120 needs to be ensured before the injection of medicine liquid, so that the situation of midway falling off or power failure is avoided. A first pressure sensor is optionally provided at the push outlet 102, where the first pressure sensor is configured to obtain a pressure when the main body 100 contacts the drug cartridge 120, and the controller 160 initiates an injection operation after receiving the pressure information when the main body 100 is locked to the drug cartridge 120.

In some embodiments, a second pressure sensor 225 is disposed at an end of bolus assembly 220 facing away from bolus outlet 102, second pressure sensor 225 is mounted at a rear portion of drive motor 224, i.e., at an end facing away from lead screw 226, and second pressure sensor 225 is electrically connected to controller 160.

When the screw housing 228 contacts the stopper 204 of the cartridge 200, pressure generated upon contact is transmitted to the second pressure sensor 225 along the screw housing 228, the screw 226, and the driving motor 224. The resistance of the stopper 204 when squeezing air and chemical liquid is different, and the air in the cartridge 200 can be discharged by differentiating between the resistance when squeezing air and chemical liquid.

It should be noted that, the second pressure sensor 225 is disposed between the driving motor 224 and the inner wall of the main body 100, the driving motor 224 may slide back and forth relative to the inner wall of the main body 100, and the second pressure sensor 225 may obtain the injection pressure between the screw sleeve 228 and the bottle stopper 204.

In the first case, the driving motor 224 is fixedly connected to the bracket 222, and the bracket 222 can slide relative to the inner wall of the main body 100, so as to transmit the injection pressure between the screw sleeve 228 and the bottle stopper 204.

In the second case, the driving motor 224 is slidably connected to the bracket 222, the bracket 222 is fixedly connected to the inner wall of the main body 100, and the driving motor 224 can transmit the injection pressure between the screw sleeve 228 and the bottle stopper 204.

In a third aspect, the drive motor 224 is slidably coupled to the support 222, the second pressure sensor 225 is coupled to the drive motor 224 and the support 222, the support 222 provides support for the second pressure sensor 225, and the drive motor 224 is configured to transmit the bolus pressure between the lead screw housing 228 and the stopper 204.

In the injection process, firstly, the screw rod sleeve 228 rapidly advances to search for the bottle stopper 204 and automatically exhausts, when the screw rod sleeve 228 contacts the bottle stopper 204, the speed is reduced, the driving motor 224 drives the screw rod sleeve 228 to revolve for two circles and retreat for 1.4mm, the contact pressure between the bottle stopper 204 and the screw rod sleeve 228 is removed, the bottle stopper 204 can be restored to a natural form, the realization of the exhaust work is facilitated, the waste of liquid medicine caused by overshoot can be prevented, and whether the exhaust is completed can be judged according to the resistance information when the bottle stopper 204 advances; next, after the exhaust is completed, the screw housing 228 advances at a set speed to inject the chemical into the human body.

In the related art, under the operation of non-professional medical staff, the injection device may be started earlier before injection or be abnormally separated from the patient during the injection, so that the liquid medicine is wasted, and the injection of the expected dosage cannot be completed. At the same time, there may be a concern that premature repositioning of bolus assembly 220 may result in flashback. In some embodiments, the injection device further comprises a third pressure sensor 260, the third pressure sensor 260 being arranged at an end surface of the cartridge 120 corresponding to an edge of the liquid outlet 128 for obtaining a contact pressure between the liquid outlet 128 and the skin.

Controller 160 is electrically coupled to third pressure sensor 260 and controller 160 may control the operation of bolus assembly 220 and prompting assembly 180 based on the contact pressure.

The third pressure sensor 260 is mounted on the drug cartridge 120, the controller 160 is mounted in the main body 100, the circuit between the main body 100 and the drug cartridge 120 is a detachable connection structure, for example, the connection is performed through a Pogo pin connector, the main body 100 is provided with an electrode at the pushing outlet 102, the electrode is connected to the controller 160, the drug cartridge 120 is provided with a Pogo pin connector at the pushing inlet 122, and the Pogo pin connector is electrically connected to the third pressure sensor 260. After the main body 100 and the cartridge 120 are loaded together, the third pressure sensor 260 is electrically connected to the controller 160 under the elastic action of the Pogo pin connector.

According to the injection device provided by the embodiment of the invention, when the injection device works, the initial contact pressure between the liquid outlet 128 and the skin is obtained through the third pressure sensor 260; when the initial contact pressure is determined to be greater than or equal to the first preset pressure, the push injection assembly 220 is controlled to be in a circuit conducting state, and the prompting assembly 180 is controlled to send out first prompting information, so that a user can be reminded of using the device without worry; when the initial contact pressure is determined to be smaller than the first preset pressure, the push injection assembly 220 is controlled to be in a circuit cut-off state, and the prompt assembly 180 is controlled to send out second prompt information to remind a user of further attaching the injection device to the skin, so that the injection device is prevented from being separated from the skin, and the situation that the injection device is started prematurely or is separated from the skin abnormally is avoided. Avoiding the waste of liquid medicine or the failure to complete the injection of the expected dosage, and bringing guarantee to the property and health of patients.

In some embodiments, the third pressure sensor 260 is in an annular structure, and the annular structure and the liquid outlet 128 are coaxially arranged, the third pressure sensor 260 is uniformly distributed around the liquid outlet 128, no matter the user holds the injection device at any angle, the third pressure sensor 260 can detect the contact pressure between the liquid outlet 128 and the skin, the detection result is accurate, and the situation that the skin cannot be contacted is avoided.

The liquid outlet 128 is formed on one side of the medicine bin 120 away from the pushing inlet 122, the external thread 1244 suitable for connecting a needle is formed on one end of the fixing seat 124 facing the liquid outlet 128, the assembling process of the medicine bin 120, the card bottle 200 and the needle is simple, and the installation efficiency is high.

The clip bottle 200 comprises a bottle body 202 and a bottle stopper 204, wherein an opening is formed at the tail of the bottle body 202, the bottle stopper 204 is inserted into the opening, and the bottle stopper 204 is used for plugging the liquid medicine in the bottle body 202.

It should be noted that, the bottle stopper 204 has a flexible structure, and when the injection component pushes the bottle stopper 204 into the bottle body 202, the liquid medicine can be injected into the human body.

In some embodiments, the side wall of the main body 100 is formed with a grip portion 104 adapted to fingers, and the grip portion 104 may increase stability and comfort when the user holds.

In some cases, the grip 104 is a groove formed on a sidewall of the body 100, the groove has a depth of between 5mm and 6mm, the number may be one or more, and the size of the groove is adapted to the size of the finger. When the user grips the injection device, one or more fingers are embedded into the grooves, so that the stability and comfort of the user during gripping are improved.

In other cases, the grip 104 is a protrusion formed on a sidewall of the body 100, the number of protrusions being one or more, and the protrusions conforming to the slit profile of the finger. When the user grips the injection device, one or more protrusions are embedded into the finger slits, so that the stability and comfort of the user during gripping are improved.

According to the injection device provided by the embodiment of the invention, the controller 160 comprises a main PCBA, a sliding rheostat PCBA and a Type C PCBA, and the sliding rheostat PCBA and the Type C PCBA are connected to the main PCBA through FPC soft cables. The main PCBA is connected with a central processing unit, a buzzer, a motor connecting end and other components, and the three PCBA are connected to the bracket 222.

The main body 100 is provided with a plurality of mounting holes for mounting the Type C interface, the power key 162, the reset key, the injection key 166 and the like, and the user interacts with the injection device through the display screen 184 and a plurality of function keys, so that intelligent control of the injection process can be realized, and the display screen 184 can also be controlled by touching. The display 184 is mounted to the main PCBA by a display bracket and the display cover is attached to the main body 100 by a backing adhesive.

In addition, the Type C cover 168 is inserted at the Type C interface, so that water can be prevented from entering the main body 100, and the safety of the injection device is improved.

A power key 162 is provided on a side wall of the main body 100, and the injection device may be turned on or off when the user presses the power key 162. The side of the power key 162 facing away from the main body 100 is recessed, for example recessed by 1mm, relative to the side wall of the main body 100, the power key 162 not extending outside the main body 100.

When the injection device is placed on a table, other objects are blocked by the side wall of the main body 100 and do not touch the power key 162 by mistake. When the injection device falls, the power key 162 does not contact the ground, avoiding false activation or shut down of the injection device.

According to the injection device provided by the embodiment of the invention, the medicine compartment 120 and the main body 100 are in a detachable structure, the medicine compartment 120 and the card bottle 200 are installed together, the medicine compartment 120 and the card bottle 200 can be placed in a refrigerator together for refrigeration, and electronic elements in the main body 100 cannot be interfered by moisture in the refrigerator.

In some embodiments, a carafe fixing plug 126 is detachably connected to an end of the fixing base 124 facing the push inlet 122, and the carafe fixing plug 126 is adapted to limit the carafe 200 from falling out of the fixing base 124.

The medicinal liquid in the cartridge 200 is required to be placed in a refrigerator for cold storage treatment to ensure its medicinal effect. In use, the medicine compartment 120 is taken out of the refrigerator and loaded with the outer body 100, so that the injection of medicine liquid can be performed. To prevent the cartridge 200 from falling off when it is taken out or loaded, a cartridge fixing stopper 126 is mounted on the fixing base 124.

In some embodiments, a connection structure is provided between the fixing stopper 126 and the fixing base 124, and the fixing stopper 126 is pulled out from the end of the fixing base 124, and the fixing stopper 126 is hung on one side of the fixing base 124 and cannot fall off.

According to an embodiment of the present invention, a liquid outlet 128 is formed at one end of the medicine compartment 120 facing away from the injection inlet 122, and a needle is mounted at one end of the fixing base 124 facing toward the liquid outlet 128.

In some embodiments, the injection device further comprises a hidden needle assembly for shielding the needle prior to injection, the hidden needle assembly comprising a hidden needle sleeve 240, a slider 242, a resilient member 244 and a toggle member 246.

The outer diameter of the hidden needle sleeve 240 matches the inner diameter of the liquid outlet 128, and the hidden needle sleeve 240 is slidably coupled to the liquid outlet 128 and can be extended or retracted relative to the drug cartridge 120.

The sliding member 242 is connected to the inner wall of the medicine compartment 120, and the extending direction of the sliding member 242 is the same as the sliding direction of the hidden needle sleeve 240. The number of sliders 242 is at least one for stabilizing the movement of the hidden needle sleeve 240.

In some embodiments, the sliding member 242 may be a groove formed on the inner wall of the drug cartridge 120, and a sliding block is formed on the outer wall of the hidden needle sleeve 240, and the sliding block is in matching connection with the groove.

In other embodiments, the slider 242 includes a guide cylinder, the hidden needle sleeve 240 is connected to a guide post, and the guide post is movably inserted into the guide cylinder. When the hidden needle sleeve 240 extends or contracts relative to the medicine compartment 120, the hidden needle sleeve is limited by the liquid outlet 128 and the guide cylinder, and the movement process is stable.

An elastic member 244 is further provided between the drug cartridge 120 and the hidden needle sleeve 240, the elastic member 244 being adapted to move the hidden needle sleeve 240 in a direction away from the drug cartridge 120. In the natural state, the hidden needle sleeve 240 extends out relative to the medicine bin 120 to shield the needle.

A chute 1201 is formed in the sidewall of the cartridge 120, and a driver 246 is slidably coupled to the chute 1201 and drivingly coupled to the needle-retracting sleeve 240.

It should be noted that, the sliding direction of the toggle member 246 in the sliding slot 1201 is the same as the extending direction of the hidden needle sleeve 240, and the user may control the extension and retraction of the hidden needle sleeve 240 through the toggle member 246.

When the sliding member 242 includes a guide cylinder and a guide post, the elastic member 244 is a spring, and the spring is disposed in the guide cylinder and connected to the guide post.

When the toggle member 246 is moved away from the outlet 128, the needle exposes the outlet 128 and the exposed needle pierces the skin of the patient for injection. When the toggle piece 246 is close to the liquid outlet 128, the needle hiding sleeve 240 shields the position of the needle, so that the user cannot see the needle, fear can be eliminated, and skin injury caused by accident can be avoided.

It should be noted that, the position of the stirring piece 246 is adjusted, so that the needle can be better installed and removed, and the stirring piece 246 is not required to be operated during injection. Under normal circumstances, the elastic member 244 pushes the hidden needle sleeve 240 toward an end far from the main body 100 to cover the needle and eliminate injection fear. When the needle is to be removed after injection, the needle is covered by the hidden needle sleeve 240, the toggle 246 is pulled to the side close to the main body 100, and the hidden needle sleeve 240 is retracted to expose the needle. The user can conveniently detach the needle head by using the needle cap. The same principle is adopted before injection, and the toggle piece 246 is pulled back, so that the needle is conveniently mounted on the clamping bottle fixing seat. Upon injection, the hidden needle sleeve 240 is compressed by the skin to be substantially flush with the third sensor 260, exposing the needle, which pierces the skin of the person and completes the injection.

In some embodiments, the holder 124 has a first viewing window 1246 formed thereon and the cartridge 120 has a second viewing window 1202 formed thereon, the first viewing window 1246 corresponding to the second viewing window 1202.

When the liquid medicine is injected, a user can directly see the injection condition and the retention condition of the liquid medicine in the card bottle 200 through the first observation window 1246 and the second observation window 1202, and the use is more convenient. Transparent windows made of glass or plastic can be arranged at the first observation window 1246 and the second observation window 1202, so that the external environment interference is reduced, and mark information such as scales can be arranged on the transparent windows, thereby facilitating the user to know the injection condition of the liquid medicine.

In some embodiments, the first viewing window 1246 and the second viewing window 1202 are greater than 23mm in length, greater than 8mm in width, greater than 95% light transmittance of the transparent window, and greater than 3H in surface hardness.

According to an embodiment of the present invention, the body 100 is detachably connected to the cartridge 120, and the push outlet 102 corresponds to the push inlet 122.

In some embodiments, the pushing outlet 102 is provided with a connecting piece 103, and the connecting piece 103 is movably inserted into the pushing inlet 122.

The outer side wall of the connection member 103 is formed with a first sliding groove 1031 and a second sliding groove 1032 which are communicated with each other, an included angle is formed between the first sliding groove 1031 and the second sliding groove 1032, and the first sliding groove 1031 extends to an edge position of the connection member 103.

The inner wall of the medicine compartment 120 is formed with a boss 121, and the boss 121 is matched with the first and second sliding grooves 1031 and 1032.

In order to improve the stability of the connection member 103 with the push inlet 122, the number of the first and second sliding grooves 1031 and 1032 may be plural, and the number of the bosses 121 may be plural.

In some cases, the number of the first and second sliding grooves 1031 and 1032 is two, and the included angle between the two sets of sliding grooves is 180 °.

In other cases, the number of first and second sliding grooves 1031, 1032 is three, and the included angle between adjacent sliding grooves is 120 °.

In other cases, the number of first and second sliding grooves 1031, 1032 is four, and the angle between adjacent sliding grooves is 90 °.

When the cartridge 120 is loaded on the main body 100, the pushing inlet 122 corresponds to the pushing outlet 102, the boss 121 first enters the first sliding groove 1031, and the connector 103 is inserted into the pushing inlet 122. After the connector 103 is completely inserted into the pushing inlet 122, the medicine cartridge 120 or the main body 100 is rotated, and the boss 121 enters the second sliding groove 1032.

It should be noted that, the first sliding groove 1031 and the second sliding groove 1032 have an included angle, and the second sliding groove 1032 can form a limiting effect on the boss 121, so as to prevent the drug storage 120 from falling off along the main body 100, and is more stable in use.

In some embodiments, the inner wall of the cartridge 120 is provided with a leaf spring 123, the leaf spring 123 is formed with an elastic protrusion 1232, and the outer sidewall of the connection member 103 is provided with a locking groove 1033.

When the medicine cartridge 120 is loaded, a certain force is applied to the main body 100 and the medicine cartridge 120, and the boss 121 enters the first sliding groove 1031 and then enters the second sliding groove 1032. When the boss 121 reaches the end of the second sliding groove 1032, the elastic protrusion 1232 enters the locking groove 1033, and the elastic protrusion 1232 and the locking groove 1033 bring the body 100 and the cartridge 120 into a locked state, and they are not automatically released. The medicine compartment 120 and the main body 100 are rotated by force, the elastic protrusions 1232 are separated from the locking grooves 1033, so that the main body 100 and the medicine compartment 120 can be detached, and the stability between the main body 100 and the medicine compartment 120 is high.

When the connecting piece 103 is arranged at the pushing outlet 102, the first pressure sensor is used for acquiring pressure information of the boss 121 at the tail end of the second sliding groove 1032, so that the medicine compartment 120 is locked with the main body 100.

In summary, the injection device provided according to the embodiment of the present invention includes a main body 100, a drug cartridge 120, a push injection assembly 220, and a controller 160; the main body 100 is formed with a push outlet 102, a push assembly 220 is disposed in the main body 100 and corresponds to the push outlet 102, and a controller 160 is disposed in the main body 100 and is connected with the push assembly circuit 220 for controlling the extension and retraction of the push assembly 220; the medicine compartment 120 is formed with a pushing inlet 122, the medicine compartment 120 is detachably connected to the main body 100, the pushing inlet 122 corresponds to the pushing outlet 102, and a fixing seat 124 suitable for placing the cartridge 200 is arranged in the medicine compartment 120. As the bolus assembly 220 moves along the bolus outlet 102 toward the bolus inlet 122, the medical fluid within the cartridge 200 may be infused into the patient. After the injection of the medicine liquid is completed, the medicine compartment 120 and the main body 100 may be separated, and then the medicine compartment 120 and the cartridge 200 in the medicine compartment 120 may be put into a refrigerator together for refrigeration. The medicine bin 120 is convenient to assemble and disassemble with the main body 100, is convenient for patients to use, can not damage electronic elements in the main body 100, and is beneficial to prolonging the service life of the injection device.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

1. An injection device, comprising:

a main body formed with a push outlet;

2. The injection device of claim 1, further comprising:

the prompt component is arranged in the main body and is electrically connected with the controller.

3. The injection device of claim 1, further comprising:

4. An injection device according to claim 1, wherein the side wall of the body is formed with a finger-fitting grip.

5. The injection device of claim 1, wherein a side wall of the body is provided with a power key, the side of the power key facing away from the body being recessed relative to the side wall of the body.

6. The injection device of any one of claims 1 to 5, wherein the bolus assembly comprises:

the bracket is arranged in the main body and is connected with the main body;

7. The injection device of claim 6, wherein the bolus assembly further comprises:

8. The injection device according to any one of claims 1 to 5, wherein a liquid outlet is formed on a side of the drug cartridge facing away from the pushing inlet, and an external thread adapted to be connected to a needle is formed on an end of the fixing base facing the liquid outlet.

9. The injection device according to any one of claims 1 to 5, wherein a cartridge retaining plug is detachably connected to an end of the retaining socket facing the push inlet.

10. The injection device of claim 8, wherein a sidewall of the cartridge is formed with a chute, the injection device further comprising:

11. The injection device of any one of claims 1 to 5, wherein the holder is formed with a first viewing window and the cartridge is formed with a second viewing window, the first viewing window corresponding to the second viewing window.

12. Injection device according to any one of claims 1 to 5, wherein the push outlet is provided with a connector adapted to be plugged into the push inlet;

The inner wall of the medicine bin is provided with a boss.

13. The injection device according to claim 12, wherein the inner wall of the cartridge is provided with a leaf spring formed with an elastic protrusion, and the outer side wall of the connector is formed with a locking groove;

14. An injection key is characterized in that a prompt component is arranged in the injection key.

15. A method of controlling an injection device according to any one of claims 1 to 13, comprising one or more of the following in combination:

1) A temperature control method;

2) An automatic exhaust control method;

3) A skin contact control method;

4) A hidden needle control method.