Patching type insulin injection device and use method

Abstract

The present invention discloses a patch-type insulin injection device, comprising a mounting box, a drug supplying part, a drug storage box, an injection part and a needle insertion part. The mounting box is attached to the human body, the injection part is arranged in the mounting box, the drug supplying part supplies a drug capsule containing insulin to the injection part, the number of drug capsules in the injection part is adjustable through the drug supplying part, the drug storage box is arranged in the mounting box, the drug storage box replenishes drug capsules for the drug supplying part, the needle insertion part is arranged in the mounting box, and the needle insertion part controls the injection needle to be inserted into the patient's body. Advantages: using the mounting box that can be attached to the patient's abdomen to load the insulin capsule, using the indwelling needle arranged in the mounting box to inject insulin into the patient's body, avoiding frequent injections for the patient and improving the patient's comfort; using the drug capsules with the same dosage to hold insulin, when using, the patient uses the drug supplying part to supply the injection part with a specified amount of insulin capsules, and then the injection can be carried out, which is convenient to use, and the device as a whole is a mechanical structure, the overall use cost is low, and the burden on the patient is reduced.

Description

Technical Field

[0001] The present invention specifically relates to a patch-type insulin injection device and a method of using the same. Background Art

[0002] With the increasing number of diabetes patients, insulin injection has become a common treatment method. There are many traditional insulin injection devices, including insulin pen injection and insulin pump injection.

[0003] The insulin pen injection method requires patients to use the insulin injection pen for frequent injections. This injection method is relatively simple, but the frequent injections cause greater pain to patients.

[0004] The insulin pump injection method is to wear the insulin injection pump on the patient and inject a quantitative amount of insulin into the patient through the injection needle on the insulin pump that remains in the patient's skin. The electric insulin pump avoids the need for frequent injections and improves a certain degree of comfort. In addition, this injection device is electrically controlled and controls the injection of a specified amount of insulin through the control motor on the operating screen. The structure can achieve insulin injection, but this injection device is relatively expensive, which greatly increases the patient's burden of use. At the same time, the steel injection needle maintained in the patient's body will cause discomfort to the patient.

[0005] Therefore, there is a need for an insulin injection device that is convenient for injection, improves patient comfort and is low in cost. Summary of the invention

[0006] The technical problem to be solved by the present invention is that the existing insulin injection device mentioned in the background technology is inconvenient to use, has poor comfort and high cost.

[0007] In view of the above technical problems, a patch-type insulin injection device is proposed; it is realized by the following technical scheme: a patch-type insulin injection device, comprising an installation box, a medicine supply part, a medicine storage box, an injection part and a needle insertion part, the installation box is attached to the human body, the injection part for injecting insulin is arranged in the installation box, the injection part is connected to the medicine supply part arranged in the installation box, the medicine supply part supplies medicine capsules containing insulin to the injection part, the number of medicine capsules in the injection part is adjustable by the medicine supply part, the medicine storage box for replenishing medicine capsules in the medicine supply part is arranged in the installation box, one end of the medicine storage box is in contact with the medicine supply part, the needle insertion part for controlling the insertion of the injection needle is arranged in the installation box, the needle insertion part controls the injection needle to penetrate into the patient's body, and automatically retracts the steel needle in the injection needle into the installation box.

[0008] Preferably, the installation box includes a box body and a cover plate, the cover plate is removable to close the box body, the cover plate includes a door plate, an operating hole and an observation window, the door plate is hinged on the cover plate, the door plate can be opened to replace the injection needle arranged in the installation box, the operating hole for controlling the amount of medicine fed into the medicine supply part is opened on the cover plate, the operating hole corresponds to the position of the medicine supply part, the observation window for observing the amount of medicine fed into the medicine is arranged on the cover plate, the position of the observation window corresponds to the injection part, and the arrangement of the observation window facilitates the observation of the number of medicine bags in the injection tube.

[0009] Preferably, the medicine supply part includes a temporary medicine storage box, a limiting ring and a hairspring, the limiting ring is arranged on the bottom surface of the box body, the temporary medicine storage box is arranged in the box body and is inside the limiting ring, a plurality of temporary medicine storage chambers are opened inside the temporary medicine storage box, medicine capsules are placed in the temporary medicine storage chambers, the hairspring is arranged in the box body, one end of the hairspring is connected to the temporary medicine storage box, and the other end is connected to the box body, the hairspring is subjected to force when the temporary medicine storage box rotates, and the arrangement of the hairspring enables the temporary medicine storage box to be reset under the action of the hairspring after the temporary medicine storage box is rotated, so as to facilitate the replenishment of medicine capsules into the empty temporary medicine storage box.

[0010] Preferably, two drug inlet holes and one drug outlet hole are provided on the limiting ring, and the two drug inlet holes correspond to the drug storage chambers on the drug storage box respectively, and the drug outlet hole corresponds to the drug inlet port on the injection part. The drug sac in the drug storage box is filled into the temporary drug storage chamber in the temporary drug storage box through the drug inlet hole, and the drug sac in the temporary drug storage box is filled into the injection tube in the injection part through the drug outlet hole. Such an arrangement facilitates the injection of insulin through the injection rod.

[0011] Preferably, the medicine storage box includes a medicine storage bin and a second compression spring and a second push plate arranged in the medicine storage bin, one end of the second compression spring is connected to the second push plate, and the other end is connected to the bottom surface of the medicine storage bin, and the medicine bag arranged in the medicine storage bin is pushed out of the medicine storage bin by the second compression spring and the second push plate. The arrangement of the second compression spring and the second push plate facilitates pushing the medicine bag in the medicine storage box into the temporary medicine storage bin in the temporary medicine storage box through the second compression spring and the second push plate.

[0012] Preferably, the injection part includes an injection tube and an injection rod, the injection rod is inserted into the injection tube, a drug inlet is arranged on the injection tube, the drug inlet corresponds to a temporary drug storage bin in the drug supply part, the drug bag in the temporary drug storage bin enters into the injection tube through the drug inlet, the setting of the drug inlet facilitates the drug bag in the temporary drug storage bin to enter into the injection tube through the drug inlet, and the use is convenient.

[0013] Preferably, the needle insertion part includes an injection needle fixing assembly and an injection needle insertion assembly. The injection needle fixing assembly for fixing the injection needle is arranged in the box body through a slide bar. The injection needle is detachably arranged on the injection needle fixing assembly. The injection needle insertion assembly is connected to the injection needle fixing assembly. The injection needle insertion assembly drives the injection needle to be inserted into the patient's body, and the steel needle in the injection needle can be automatically pulled out through the injection needle insertion assembly. The arrangement of the needle insertion part facilitates the insertion of the injection needle into the patient's body.

[0014] In a preferred embodiment of the technical solution of the present invention, the medicine capsule includes a liquid storage box, a liquid pushing plate and a medicine outlet needle, the insulin is arranged in the liquid storage box, the medicine outlet needle is arranged on the liquid pushing plate, and the liquid pushing plate is arranged in the liquid storage box. Pushing the liquid pushing plate can release the insulin in the liquid storage box through the medicine outlet needle. The setting of the medicine capsule increases the service life of the device. After the insulin injection, the medicine capsule can be replaced to continue to be used, thereby reducing the cost of use.

[0015] Preferably, the injection needle comprises an indwelling needle and a steel needle. The steel needle is arranged inside the indwelling needle. An outer tube and an inner tube are arranged on the needle cap of the indwelling needle. A second rubber sealing sheet is arranged on the inner tube. The medicine dispensing needle in the medicine capsule passes through the second rubber sealing sheet to inject insulin into the injection needle.

[0016] The present invention also discloses a method for using a patch-type insulin injection device, which is characterized by comprising the following steps:

[0017] S1: Injection needle installation: open the door panel and install the injection needle;

[0018] S2: Refilling medicine capsules: remove the medicine storage box and fill the medicine capsules into the medicine storage box;

[0019] S3: loading medicine: rotating the temporary medicine storage box in the medicine supply unit to store the medicine capsules in the medicine storage box into the temporary medicine storage bin in the temporary medicine storage box;

[0020] S4: Insert the injection needle: push the needle push rod on the injection needle insertion assembly to insert the injection needle into the patient's body, fix the injection needle, press the reset rod on the needle insertion part to retract the steel needle in the injection needle back into the installation box;

[0021] S5: Select injection dose: Select the injection dose according to the need, and move the temporary medicine storage box according to the dose mark. The medicine capsule in the temporary medicine storage box automatically enters the injection tube. After releasing the temporary medicine storage box, the temporary medicine storage box automatically resets, and the medicine storage box automatically refills the medicine capsule into the temporary medicine storage box;

[0022] S6: Insulin injection: Push the injection rod on the injection part, and the injection rod pushes the insulin in the drug capsule into the injection needle to complete the injection;

[0023] S7: Take out the medicine capsule shell: open the shell removal cover on the installation box and take out the empty medicine capsule shell in the injection tube.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The technical solution of the present invention uses an installation box that can be attached to the patient's abdomen to load the insulin capsule, and uses an indwelling needle arranged in the installation box to inject insulin into the patient's body, thereby avoiding frequent injections for the patient and improving the patient's comfort.

[0026] Insulin is contained in medicine capsules of the same dosage. When in use, the patient uses the medicine supply part to automatically supply a specified number of insulin capsules to the injection part to determine the insulin injection dosage, and then pushes the injection rod to complete the injection. It is easy to use, the device is a mechanical structure as a whole, the overall use cost is low, and the burden on patients is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0028] Figure 2 This is an exploded view of the installation box;

[0029] Figure 3 It is a three-dimensional schematic diagram of the medicine supply department;

[0030] Figure 4 It is a partial cross-sectional view of the medicine supply part;

[0031] Figure 5 It is a three-dimensional schematic diagram of the medicine storage box;

[0032] Figure 6 It is a partial cross-sectional view of the medicine storage box;

[0033] Figure 7 It is a three-dimensional schematic diagram of the injection part;

[0034] Figure 8 It is a partial cross-sectional view of the injection part;

[0035] Fig. 9 It is a three-dimensional schematic diagram of the needle insertion part;

[0036] Fig.10 It is a partial cross-sectional view of the medicine capsule;

[0037] Fig.11 It is a cross-sectional view of multiple drug capsules during the injection process;

[0038] Fig.12 It is a partial cross-sectional view of the injection needle;

[0039] Fig.13 It is an exploded view of the present invention; DETAILED DESCRIPTION

[0040] The following will be combined with the attached embodiment of the present invention Figure 1-13 , the technical solutions in the embodiments of the present invention are described in detail. Example

[0041] like Figure 1 , 3 As shown in FIG. 13 , a patch-type insulin injection device includes a mounting box 1 , a drug supply portion 2 , a drug storage box 3 , an injection portion 4 , a needle insertion portion 5 , a drug bag 6 and an injection needle 7 .

[0042] The whole device is attached to the patient's abdomen through the installation box 1. The application method can be selected to be sweat-proof and breathable medical double-sided tape. The medical double-sided tape is attached to the back of the installation box 1 and contacts the patient. This fixing method is the existing technology (the medical double-sided tape is an existing device and is not shown in the figure). The medicine supply part 2 is arranged in the installation box 1. The medicine supply part 2 temporarily stores medicine capsules 6. The medicine supply part 2 can controllably supply medicine capsules 6 to the injection part 4 in the installation box 1. The medicine storage box 3 is detachably arranged in the installation box 1. One end of the medicine storage box 3 is connected to the medicine supply part 2. The medicine storage box 3 replenishes the medicine capsules 6 to the medicine supply part 2. The injection needle 7 is detachably arranged in the installation box 1. The injection needle 7 is connected to the injection part 4 arranged in the installation box 1. The insulin in the medicine capsule 6 in the injection part 4 is injected into the patient's body through the injection needle 7 and the injection part 4. The needle insertion part 5 for controlling the injection needle 7 to penetrate into the body is arranged in the installation box 1.

[0043] The main function of the installation box 1 is to serve as a carrier for installing various components, and the entire device is also attached to the patient's abdomen through the installation box 1.

[0044] There are multiple temporary medicine storage bins 22 in the medicine supply section 2. Medicine capsules 6 containing insulin are temporarily stored in each temporary medicine storage bin 22. The main function of the medicine supply section 2 is to supply medicine capsules 6 to the injection section 4 as needed.

[0045] The medicine storage box 3 stores medicine capsules 6. The two medicine storage chambers 31 of the medicine storage box 3 are connected to the medicine supply part 2. The main function of the medicine storage box 3 is to replenish the medicine capsules 6 to the medicine supply part 2. After the medicine capsules 6 in the medicine supply part 2 are supplied to the injection part 4, the medicine storage box 3 replenishes the medicine capsules 6 to the blank temporary medicine storage chamber 22 in the medicine supply part 2.

[0046] The main function of the injection part 4 is to inject the insulin in the medicine bag 6. The insulin in the medicine bag 6 is injected into the patient's body through the injection part 4 and the injection needle 7.

[0047] The main function of the needle insertion part 5 is to insert the injection needle 7 into the patient's subcutaneous tissue and automatically pull out the steel needle 72 in the injection needle 7, leaving only the indwelling needle 71.

[0048] The main function of the medicine capsule 6 is to contain insulin. Each medicine capsule 6 stores an equal amount of insulin. The injection dosage of insulin can be changed by selecting the number of medicine capsules 6.

[0049] like Figure 1 , 2 As shown in Figure 13, the installation box 1 includes a box body 101 and a cover plate 102. The box body 101 is a hollow box with a rectangular cross-section. There is a chamber inside the box body 101 for installing various components. The front side of the box body 101 is open, and this opening is removably closed by the cover plate 102.

[0050] On the lower surface of the box body 101, a hole with a rectangular cross-section is opened at one end near the side surface, and this hole is named as the medicine shell extraction hole 103. The medicine shell extraction hole 103 is detachably closed by a shell extraction cover plate 105. The shell extraction cover plate 105 is a rectangular plate. One end of the shell extraction cover plate 105 is integrally provided with an elastic card, and the other end is hinged to a side of the box body 101 near the medicine shell extraction hole 103. The shell extraction cover plate 105 can be disassembled and assembled on the box body 101 through the elastic card at one end of the shell extraction cover plate 105 to close the medicine shell extraction hole 103.

[0051] The method of fixing the shell cover 105 by elastic cards is a prior art. For details, please refer to the battery cover of the remote control, which will not be described in detail here.

[0052] In order to facilitate the control of the needle insertion of the needle insertion part 5, a rectangular hole is opened on the upper surface of the box body 101, and the needle insertion push rod 506 on the needle insertion part 5 is exposed from the rectangular hole for the user to operate. Pushing the needle insertion push rod 506 can control the needle insertion of the needle insertion part 5.

[0053] The cover plate 102 is a rectangular plastic plate, which is fixed to the box body 101 by screws to close the box body 101. In order to facilitate the replacement of the injection needle 7, the cover plate 102 is designed in two sections, wherein the smaller part is named the door plate 106, and the door plate 106 is hinged on the cover plate 102, and the door plate 106 can rotate relative to the cover plate 102 along the hinge.

[0054] Regarding the fixing of the door plate 106 and the cover plate 102 , the cover plate 102 is fixed to the box body 101 with screws. After fixing, the position of the cover plate 102 cannot be moved. The door plate 106 is hinged to the cover plate 102 . The injection needle 7 in the box body 101 can be replaced by opening the door plate 106 .

[0055] In order to facilitate the fixation of the door panel 106, a door panel fixing card 110 with a certain elasticity is provided on the door panel 106. The door panel fixing card 110 is integrally formed with the door panel 106, and a rectangular hole is opened on the surface of the door panel fixing card 110. A door panel fixing block 111 with a triangular cross-section is fixed on the box body 101 at a position corresponding to the door panel fixing card 110. When the door panel 106 is closed, the door panel fixing block 111 can cooperate with the rectangular hole on the door panel fixing card 110 to fix the door panel 106 on the box body 101. When the door panel 106 needs to be opened, the door panel fixing card 110 is lifted outward, and the limit between the door panel fixing card 110 and the door panel fixing block 111 is released to open the door panel 106.

[0056] In order to facilitate the control of the number of medicine bags 6 supplied from the medicine supply part 2 to the injection part 4, a circular through hole is opened on the surface of the cover plate 102, and this circular hole is named as an operating hole 108. The diameter of the operating hole 108 is slightly smaller than the outer diameter of the temporary medicine storage box 21 in the medicine supply part 2. The temporary medicine storage box 21 can be controlled to rotate through the operating hole 108, thereby controlling the medicine bag 6 to enter the injection tube 41 in the injection part 4.

[0057] In addition, in order to facilitate the quick disassembly and assembly of the medicine storage box 3, a trapezoidal hole is opened on the cover plate 102 and passes through the cover plate 102. This hole is named as the release hole 109. The locking piece 32 on the medicine storage box 3 can be snapped into the release hole 109 to complete the fixation of the medicine storage box 3.

[0058] In order to facilitate observation of the number of medicine bags 6 in the injection tube 41 in the injection part 4, a rectangular observation window 107 is provided on the cover plate 102 and the door plate 106 at a position corresponding to the injection tube 41, and a transparent observation piece 112 is installed in the observation window 107. The number of medicine bags 6 in the injection tube 41 in the injection part 4 can be seen through the observation piece 112, which is convenient to use.

[0059] Definition: This embodiment is based on the installation surface of the installation box 1 and the patient. The surface of the installation box 1 that contacts the patient is the back surface, and the other surface opposite to it is the front surface. The direction in which the lower side of the installation box 1 points to the ground is the downward direction, and the direction opposite to it is the upward direction. The direction from the outside to the inside of the installation box 1 is the inner direction, and the other direction opposite to it is the outer direction.

[0060] like Figure 3 and 4 As shown, the medicine supply portion 2 includes a temporary medicine storage box 21, and the temporary medicine storage box 21 is fixed in the box body 101 through a mounting rod.

[0061] The temporary medicine storage box 21 is a circular plastic plate with a certain thickness. A circular through hole is opened in the middle of the temporary medicine storage box 21. The temporary medicine storage box 21 is fixed in the box body 101 through the through hole using a circular mounting rod and screws. The temporary medicine storage box 21 can rotate freely around the mounting rod.

[0062] In order to facilitate temporary storage of medicine capsules 6, a plurality of rectangular grooves are concavely provided on the arc surface of the temporary medicine storage box 21. In this embodiment, 10 grooves are preferably arranged, and these grooves are named temporary medicine storage bins 22. The medicine capsules 6 in the temporary medicine storage box 21 are placed in these temporary medicine storage bins 22.

[0063] In order to facilitate pushing the medicine bag 6 in the temporary medicine storage bin 22 into the injection tube 41 in the injection part 4, a spring is fixed on the bottom surface of the temporary medicine storage bin 22, and this spring is named as the first compression spring 25. A rectangular first push plate 26 is fixed to the other end of the first compression spring 25. The first push plate 26 and the first compression spring 25 are both located in the temporary medicine storage bin 22. When the medicine bag 6 is placed in the temporary medicine storage bin 22, the first compression spring 25 is compressed. When the opening of the temporary medicine storage bin 22 is aligned with the medicine inlet 43 on the injection tube 41, the first compression spring 25 and the first push plate 26 can push the medicine bag 6 into the injection tube 41 through the medicine inlet 43.

[0064] In order to prevent the medicine bag 6 installed in the temporary medicine storage bin 22 from being pushed out of the temporary medicine storage bin 22 unexpectedly, a circular limiting ring 23 is fixed on the box body 101. The position of the limiting ring 23 corresponds to the position of the temporary medicine storage box 21. The limiting ring 23 is integrally sleeved on the outside of the temporary medicine storage box 21. The inner diameter of the limiting ring 23 is slightly larger than the outer diameter of the temporary medicine storage box 21, and the inner wall of the limiting ring 23 is arc-shaped. The arc-shaped inner wall of the limiting ring 23 corresponds to the arc-shaped outer wall of the temporary medicine storage box 21, and the temporary medicine storage box 21 can rotate in the limiting ring 23.

[0065] In order to facilitate the supply of medicine to the temporary medicine storage box 21 and to facilitate the supply of the medicine bag 6 in the temporary medicine storage box 21 into the injection tube 41, a medicine outlet hole 28 is opened on the limiting ring 23 corresponding to the medicine inlet 43 on the injection tube 41. The medicine bag 6 in the temporary medicine storage box 21 is pushed out through the medicine outlet hole 28 and then enters the injection tube 41 through the medicine inlet 43 on the injection tube 41. Two medicine inlet holes 24 are opened on the limiting ring 23 corresponding to the openings of the two medicine storage bins 31 on the medicine storage box 3. The medicine bag 6 in the medicine storage box 3 can enter the temporary medicine storage bin 22 through the medicine inlet hole 24.

[0066] In order to facilitate the reset of the temporary medicine storage box 21 after rotation and to facilitate the replenishment of medicine capsules 6 into the temporary medicine storage chamber 22, a hairspring 27 is further arranged in the box body 101. The hairspring 27 is located between the temporary medicine storage box 21 and the box body 101. One end of the hairspring 27 is fixed to the box body 101, and the other end is fixed to the temporary medicine storage box 21. When the temporary medicine storage box 21 rotates, the hairspring 27 is compressed. In this way, after the temporary medicine storage box 21 rotates to supply medicine, the temporary medicine storage box 21 is released. At this time, the temporary medicine storage box 21 is reset under the action of the hairspring 27. During the rotation and reset process of the temporary medicine storage box 21, when the temporary medicine storage chamber 22 without the medicine capsule 6 corresponds to the medicine inlet hole 24, the medicine storage box 3 replenishes the medicine capsule 6 into the temporary medicine storage chamber 22.

[0067] Regarding the number and distribution of medicine capsules 6 stored in the temporary medicine storage box 21, in the present embodiment, there are a total of 10 temporary medicine storage bins 22 in the temporary medicine storage box 21, one of which corresponds to the medicine inlet 43. No medicine capsule 6 is placed in this temporary medicine storage bin 22, and medicine capsules 6 are placed in the remaining 9 temporary medicine storage bins 22. When supplying medicine, the temporary medicine storage box 21 rotates clockwise, and when rotating clockwise, the first temporary medicine storage bin 22 for supplying medicine corresponds to a medicine inlet hole 24. In this way, even if only one medicine capsule 6 is supplied, it can be ensured that when the temporary medicine storage box 21 is reset, the medicine storage box 3 automatically replenishes the medicine capsule 6.

[0068] In order to facilitate the temporary medicine storage box 21 to supply medicine to the injection part 4 and to calculate the supply amount, on the front side of the temporary medicine storage box 21, there is a ring-shaped medicine feed button 29 protruding perpendicular to the temporary medicine storage box 21. The medicine feed button 29 corresponds to the position of the temporary medicine storage bin 22 one by one, and a number is pasted on each medicine feed button 29, the numbers are from 0 to 9, and the numbers are distributed counterclockwise, and number 0 corresponds to the temporary medicine storage bin 22 where no medicine capsule 6 is ever placed.

[0069] like Figure 5 , 6 As shown in FIG. 13 , the medicine storage box 3 includes a medicine storage chamber 31 and a locking piece 32 .

[0070] The medicine storage box 3 is composed of three rectangular frames, two of which are distributed opposite to each other as medicine storage bins 31. The medicine storage bin 31 is a hollow tube with a rectangular cross-section. The medicine capsule 6 is stored inside the medicine storage bin 31. In order to facilitate the smooth pushing of the medicine capsule 6 from the medicine storage bin 31 to the temporary medicine storage bin 22, a spring is fixed in each medicine storage bin 31, and this spring is named as the second compression spring 34. One end of the second compression spring 34 is connected to the bottom surface of the medicine storage bin 31. At the same time, a push plate is fixed to the other end of the second compression spring 34, and this push plate is named as the second push plate 33. After the medicine capsule 6 is placed in the medicine storage bin 31, the second compression spring 34 is compressed.

[0071] In order to prevent the medicine bag 6 placed in the medicine storage bin 31 from being pushed out unplanned, a third limit card 35 with an "L"-shaped cross-section is hinged at the open end of the medicine storage bin 31. The shorter surface of the third limit card 35 blocks the open end of the medicine storage bin 31 to prevent the medicine bag 6 from being pushed out. The longer surface of the third limit card 35 has a certain curvature. At the same time, the third limit card 35 is installed with a torsion spring in the hinge rod. When the medicine bag 6 is installed in the medicine storage bin 31, the medicine bag 6 cannot be pushed out. Only after the medicine storage box 3 is inserted into the box body 101, the longer surface of the third limit card 35 at the open end of the medicine storage bin 31 contacts the limit ring 23 at the medicine feed hole 24, and the third limit card 35 rotates along the hinge to release the third limit card 35 from blocking the opening of the medicine storage bin 31. At this time, the medicine bag 6 can be pushed out.

[0072] In order to ensure the stability of the medicine storage box 3 fixed on the box body 101, an elastic plate protrudes between the two medicine storage chambers 31 of the medicine storage box 3, and a trapezoidal locking piece 32 protrudes outward from the elastic plate. The locking piece 32 can cooperate with the release hole 109 to achieve the medicine storage box 3 being snapped into the box body 101. When the medicine storage box 3 needs to be removed, the locking piece 32 can be pressed to pull the medicine storage box 3 outward.

[0073] like Figure 1 , 7 As shown in FIG. 8 , the injection unit 4 includes an injection tube 41 and an injection rod 42 .

[0074] The injection tube 41 is a transparent plastic tube with a rectangular cross section. A circular channel is opened inside the injection tube 41. The medicine capsule 6 is located in this circular channel. An injection needle connection port is provided at one end of the injection tube 41, and the injection needle 7 is installed on this connection port.

[0075] At the other end of the injection tube 41 , a hole is provided perpendicular to the outer surface of the injection tube 41 and is connected to the injection tube 41 . The hole is named the drug inlet 43 . The size of the drug inlet 43 is slightly larger than the size of the medicine capsule 6 . The medicine capsule 6 can be supplied to the injection tube 41 through the drug inlet 43 .

[0076] In order to facilitate the medicine bag 6 to enter the injection tube 41, a medicine pushing shrapnel 44 is fixed to one end of the injection tube 41 near the medicine inlet 43. When the medicine bag 6 enters the medicine inlet 43, the medicine pushing shrapnel 44 applies a thrust to the medicine bag 6. Under the action of the medicine pushing shrapnel 44 and the first compression spring 25, the medicine bag 6 enters the injection tube 41 and is pushed into the interior of the injection tube 41.

[0077] The injection rod 42 is a round rod, one end of which is inserted into the injection tube 41, and a rectangular injection push plate 46 is fixed to the other end. Pushing the injection push plate 46 can drive the injection rod 42 to move. An injection push sheet 45 is installed on the injection push plate 46. The injection push sheet 45 is exposed to the outside of the box body 101, and the injection push sheet 45 can move along the injection stroke hole 104.

[0078] After injection, in order to facilitate the reset of the injection rod 42, a spring is provided on the injection rod 42, and this spring is named as a reset spring 47. One end of the reset spring 47 is connected to the injection push plate 46, and the other end is in contact with the injection tube 41. When the injection rod 42 is pushed, the reset spring 47 is compressed.

[0079] In order to facilitate the removal of the shell of the medicine capsule 6 after injection, a rectangular notch is opened under the injection tube 41, and the notch corresponds to the position of the medicine shell removal hole 103, and the inner side surface of the shell removal cover 105 is arc-shaped. When the shell removal cover 105 is installed, the inner side surface of the shell removal cover 105 fills the rectangular notch on the injection tube 41. After opening the shell removal cover 105, the shell of the medicine capsule 6 in the injection tube 41 can be directly taken out.

[0080] like Fig. 9 and 13 As shown, the needle insertion part 5 includes an injection needle fixing component 501 and an injection needle insertion component 502. The injection needle fixing component 501 mainly functions to fix the injection needle 7, and the injection needle insertion component 502 mainly functions to insert the injection needle 7 into the patient's subcutaneous tissue.

[0081] The injection needle fixing assembly 501 includes a medication needle fixing card 503 and a fixing card cover 504. The medication needle fixing card 503 is an "L"-shaped frame as a whole. The needle head of the injection needle 7 is placed in this frame, and the steel needle 72 in the injection needle 7 is fixed in the vertical groove of the medication needle fixing card 503. In order to ensure the stability of the steel needle 72, a fixing card cover 504 is hinged on the outer side of the medication needle fixing card 503. One end of the fixing card cover 504 is hinged to the outside of the medication needle fixing card 503, and the other end is clamped to the medication needle fixing card 503. The clamping method refers to the door panel fixing card 110 and the door panel fixing block 111. After being fixed, the fixing card cover 504 maintains a certain distance from the indwelling needle 71 in the injection needle 7. At this time, the indwelling needle 71 can be pulled out, but the steel needle 72 cannot be pulled out.

[0082] In order to facilitate needle insertion, the injection needle fixing assembly 501 is installed on a slide bar 512 . The slide bar 512 is fixed on the bottom surface of the box body 101 , and the injection needle fixing assembly 501 can slide along the slide bar 512 .

[0083] The injection needle insertion assembly 502 includes a needle insertion slider 505 and a needle insertion push rod 506. The needle insertion slider 505 is a rectangular block. The needle insertion slider 505 is installed on the slide bar 512. The needle insertion slider 505 can slide along the slide bar 512. A needle insertion push rod 506 is fixed on the needle insertion slider 505. The other end of the needle insertion push rod 506 is exposed from the box body 101. By pushing the needle insertion push rod 506, the injection needle 7 can be driven to move along the slide bar 512.

[0084] When the injection needle is inserted into the patient's body, in order to maintain this position, a limit plate is protruded from the box body 101, and a second limit card 510 with a triangular cross-section protrudes from the end of the limit plate. At the same time, a similar first limit card 507 is also correspondingly provided on the needle insertion slider 505. When the injection needle 7 is inserted into the patient's subcutaneous tissue, the first limit card 507 and the second limit card 510 can be engaged and matched to fix the position, which is convenient for the user to stick the fixing tape.

[0085] In order to pull out the steel needle 72 in the injection needle 7 after fixation, a spring mounting plate 509 is fixed at the end of the slide bar 512, and a tension spring 508 is also fixed to the needle insertion push rod 506 and the spring mounting plate 509. When the first limit card 507 is engaged with the second limit card 510, the tension spring 508 is stretched by force, and a reset rod 511 is fixed on the second limit card 510, and the other end of the reset rod 511 is exposed to the outside of the box body 101. Pressing the reset rod 511 can release the engagement between the first limit card 507 and the second limit card 510. At this time, the injection needle fixing assembly 501 is reset under the action of the tension spring 508, and then the steel needle 72 in the indwelling needle 71 is pulled out.

[0086] like Fig.12 As shown, the injection needle 7 includes an indwelling needle 71 and a steel needle 72 , and the steel needle 72 is inserted into the indwelling needle 71 .

[0087] The indwelling needle 71 with the steel needle 72 is an existing device and can be used directly. The indwelling needle 71 is different from the existing device in the needle cap 73. The difference is that the needle cap 73 of the indwelling needle 71 is double-layered. The needle cap 73 includes an outer tube 74 and an inner tube 72. The outer tube 74 is sleeved on the outside of the inner tube 72. There is a certain distance between the outer tube 74 and the inner tube 72. This distance is the same as the wall thickness of the needle cap fixing interface on the injection tube 41. The inner side surface of the outer tube 74 contacts the outer surface of the needle cap fixing interface, and the outer side surface of the inner tube 72 contacts the inner side surface of the needle cap fixing interface.

[0088] The end of the inner tube 72 is sealed with a rubber sheet, which is named as the second rubber sealing sheet 76. The medicine dispensing needle 63 in the medicine capsule 6 pierces the second rubber sealing sheet 76 to supply insulin to the indwelling needle 71 to complete the injection.

[0089] like Fig.10 and 11 As shown, the medicine capsule 6 includes a liquid storage box 61, a liquid pushing plate 62 and a medicine dispensing needle 63. Insulin is stored in the liquid storage box 61. The medicine dispensing needle 63 is installed on the liquid pushing plate 62. The liquid pushing plate 62 is arranged in the liquid storage box 61. Pushing the liquid pushing plate 62 can inject the insulin in the liquid storage box 61 through the medicine dispensing needle 63.

[0090] The liquid storage box 61 is a box with a circular cross-section. The entire liquid storage box 61 is made of transparent plastic that meets medical standards, such as PP plastic. One end of the liquid storage box 61 is open, and the liquid pushing plate 62 is installed in the liquid storage box 61 from this end. A rubber sealing sheet is embedded on the end surface of the closed end of the liquid storage box 61. This rubber sealing sheet is named the first rubber sealing sheet 64. The medicine discharge needle 63 on the liquid pushing plate 62 can pierce the first rubber sealing sheet 64 to inject the insulin in the liquid storage box 61.

[0091] The medicine dispensing needle 63 is cylindrical, and there is a channel for the medicine liquid to flow through inside the medicine dispensing needle 63. The end of the medicine dispensing needle 63 inserted into the liquid storage box 61 is sharp, which is convenient for piercing the first rubber sealing sheet 64. This end is named the tip, and the other end is named the end. A limiting ring is convexly provided on the outer side surface of the end of the medicine dispensing needle 63 located outside the liquid storage box 61. The setting of the limiting ring can prevent the entire medicine dispensing needle 63 from entering the liquid storage box 61. In order to realize the simultaneous supply of medicine from multiple medicine capsules 6, the outer diameter of the tip is smaller than the inner diameter of the end, and the tip can be inserted into the end, and a rubber pad is fixed on the end face of the end. The tip can be inserted into the end only after piercing the rubber pad.

[0092] In order to facilitate the outflow of the drug solution, a drug outlet 65 penetrating the drug outlet needle 63 is provided on the side wall of the drug outlet needle 63 . When the liquid pushing plate 62 is pushed, the insulin in the liquid storage box 61 is discharged through the drug outlet 65 on the drug outlet needle 63 .

[0093] In order to prevent the medicine needle 63 from being accidentally touched out, a rubber sheet is fixed to the open end of the liquid storage box 61, and the rubber sheet closes the open end of the liquid storage box 61, so as to prevent the medicine needle 63 from being accidentally touched out.

[0094] The method for using the patch-type insulin injection device specifically includes the following steps:

[0095] S1: Installing the injection needle 7: Use the door panel fixing card 111 to open the door panel 106, then open the fixing card cover 504 on the injection needle fixing assembly 501, install the injection needle 7 in the injection needle fixing assembly 501, and then close the fixing card cover 504;

[0096] S2: Refilling the medicine capsule 6: Press the locking piece 32 to remove the medicine storage box 3, push open the third limit card 35 at the end of the medicine storage bin 31, and fill the medicine capsule 6 into the medicine storage box 3 in the same direction;

[0097] S3: Add medicine: turn the medicine feeding button 29 on the temporary medicine storage box 21 to rotate the temporary medicine storage box 21 in the medicine supply part 2 counterclockwise for half a circle, then install the medicine storage box 3, and then release the temporary medicine storage box 21. At this time, the temporary medicine storage box 21 is reset under the action of the balance spring. When the empty temporary medicine storage bin 22 in the temporary medicine storage box 21 corresponds to the medicine feeding hole 24, the medicine bag 6 in the medicine storage box 3 is pushed into the temporary medicine storage bin 22 under the action of the first compression spring 25 and the first push plate 26;

[0098] S4: inserting the injection needle 7: pushing the needle push rod 506 on the injection needle insertion assembly 502, inserting the injection needle 7 into the patient's body, and fixing the indwelling needle 71 with adhesive tape, and then pressing the reset rod 511 on the needle insertion part 5 to retract the steel needle 72 back into the installation box 1;

[0099] S5: Select injection dose: Select the injection dose as needed, turn the medicine feeding button 29 on the temporary medicine storage box 21 according to the dose mark, and the medicine capsule 6 in the temporary medicine storage box 21 automatically enters the injection tube 41. After releasing the temporary medicine storage box 21, the temporary medicine storage box 21 automatically resets, and the medicine storage box 3 automatically refills the medicine capsule 6 into the temporary medicine storage box 21;

[0100] S6: Insulin injection: Push the injection rod 42 on the injection part 4, the injection rod 42 pushes the insulin in the medicine capsule 6 into the injection needle 7, and releases the injection rod 42 after the injection is completed, and the injection rod 42 is reset under the action of the reset spring 47;

[0101] S7: Taking out the outer shell of the medicine capsule 6: Open the shell taking cover 105 on the installation box 1 and take out the outer shell of the empty medicine capsule 6 in the injection tube 41.

[0102] Regarding the relationship between the elastic forces of the springs in this embodiment, the elastic force of the second compression spring 34 in the medicine storage box 3 is greater than that of the first compression spring 25 in the temporary medicine storage bin 22, and the elastic force of the first compression spring 25 is greater than the elasticity of the medicine pushing spring 44 in the injection part 4, so that the medicine bag 6 in the medicine storage box 3 can be smoothly replenished into the temporary medicine storage bin 22, and at the same time, the medicine bag 6 in the temporary medicine storage bin 22 can be smoothly supplied to the injection tube 41.

[0103] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A patch-type insulin injection device, characterized in that: The invention comprises a mounting box (1), a medicine supply section (2), a medicine storage box (3), an injection section (4) and a needle insertion section (5). The mounting box (1) is attached to a human body. The injection section (4) for injecting insulin is arranged in the mounting box (1). The injection section (4) is connected to the medicine supply section (2) arranged in the mounting box (1). The medicine supply section (2) supplies a medicine capsule (6) containing insulin to the injection section (4). The number of medicine capsules (6) in the injection section (4) is adjustable by the medicine supply section (2). The medicine storage box (3) for replenishing medicine capsules (6) in the medicine supply section (2) is arranged in the mounting box (1). One end of the medicine storage box (3) is in contact with the medicine supply section (2). The needle insertion section (5) for controlling the insertion of an injection needle (7) is arranged in the mounting box (1). The needle insertion section (5) controls the injection needle (7) to be inserted into the patient's body and automatically retracts the steel needle (72) in the injection needle (7) into the mounting box (1). The medicine supply part (2) comprises a temporary medicine storage box (21), a limiting ring (23) and a hairspring (27); the limiting ring (23) is arranged on the bottom surface of the box body (101); the temporary medicine storage box (21) is arranged in the box body (101) and is located inside the limiting ring (23); a plurality of temporary medicine storage bins (22) are provided inside the temporary medicine storage box (21); the medicine capsule (6) is placed in the temporary medicine storage bins (22); the hairspring (27) is arranged in the box body (101); one end of the hairspring (27) is connected to the temporary medicine storage box (21) and the other end is connected to the box body (101); when the temporary medicine storage box (21) rotates, the hairspring (27) is subjected to force; Two drug inlet holes (24) and one drug outlet hole (28) are provided on the limiting ring (23). The two drug inlet holes (24) correspond to the drug storage bins (31) on the drug storage box (3), respectively. The drug outlet hole (28) corresponds to the drug inlet port (43) on the injection part (4). The drug capsule (6) in the drug storage box (3) is filled into the temporary drug storage bin (22) in the temporary drug storage box (21) through the drug inlet holes (24). The drug capsule (6) in the temporary drug storage box (21) is filled into the injection tube (41) in the injection part (4) through the drug outlet hole (28).

2. The patch-type insulin injection device according to claim 1, characterized in that: The installation box (1) comprises a box body (101) and a cover plate (102); the cover plate (102) is detachably sealed to the box body (101); the cover plate (102) comprises a door plate (106), an operation hole (108) and an observation window (107); the door plate (106) is hinged to the cover plate (102); an injection needle (7) arranged in the installation box (1) can be replaced by opening the door plate (106); an operation hole (108) for controlling the amount of medicine fed into the medicine supply unit (2) is provided on the cover plate (102); the operation hole (108) corresponds to the position of the medicine supply unit (2); and an observation window (107) for observing the amount of medicine fed is provided on the cover plate (102); the position of the observation window (107) corresponds to the injection unit (4).

3. The patch-type insulin injection device according to claim 1, characterized in that: The medicine storage box (3) comprises a medicine storage bin (31) and a second compression spring (34) and a second push plate (33) arranged in the medicine storage bin (31). One end of the second compression spring (34) is connected to the second push plate (33), and the other end is connected to the bottom surface of the medicine storage bin (31). The medicine bag (6) arranged in the medicine storage bin (31) is pushed out of the medicine storage bin (31) via the second compression spring (34) and the second push plate (33).

4. The patch-type insulin injection device according to claim 1, characterized in that: The injection section (4) comprises an injection tube (41) and an injection rod (42). The injection rod (42) is inserted into the injection tube (41). A drug inlet (43) is provided on the injection tube (41). The drug inlet (43) corresponds to a temporary drug storage bin (22) in the drug supply section (2). The drug capsule (6) in the temporary drug storage bin (22) enters the injection tube (41) through the drug inlet (43).

5. The patch-type insulin injection device according to claim 1, characterized in that: The needle insertion part (5) comprises an injection needle fixing assembly (501) and an injection needle insertion assembly (502). The injection needle fixing assembly (501) for fixing the injection needle (7) is arranged in the box body (101) via a slide bar (512). The injection needle (7) is detachably arranged on the injection needle fixing assembly (501). The injection needle insertion assembly (502) is connected to the injection needle fixing assembly (501). The injection needle insertion assembly (502) drives the injection needle (7) to be inserted into the patient's body, and the steel needle (72) in the injection needle (7) is controllably and automatically pulled out through the injection needle insertion assembly (502).

6. The patch-type insulin injection device according to claim 1, characterized in that: The medicine capsule (6) comprises a liquid storage box (61), a liquid pushing plate (62) and a medicine dispensing needle (63); insulin is arranged in the liquid storage box (61); the medicine dispensing needle (63) is arranged on the liquid pushing plate (62); the liquid pushing plate (62) is arranged in the liquid storage box (61); and the insulin in the liquid storage box (61) can be released through the medicine dispensing needle (63) by pushing the liquid pushing plate (62).

7. The patch-type insulin injection device according to claim 1, characterized in that: The injection needle (7) comprises an indwelling needle (71) and a steel needle (72), wherein the steel needle (72) is arranged inside the indwelling needle (71), an outer tube (74) and an inner tube (75) are arranged on a needle cap (73) of the indwelling needle (71), a second rubber sealing sheet (76) is arranged on the inner tube (75), and a medicine dispensing needle (63) in the medicine capsule (6) passes through the second rubber sealing sheet (76) to inject insulin into the injection needle (7).

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