A drug injection device

Abstract

This invention relates to a drug injection device, comprising: a passive drug storage and propulsion unit, a reuse control unit, an external control unit, and a reuse control unit charging unit; the passive drug storage and propulsion unit includes a drug storage module, a mechanical propulsion module, and an injection mechanism; the mechanical propulsion module is connected to the drug storage module; the injection mechanism is connected to both the drug storage module and the mechanical propulsion module; the reuse control unit is detachably connected to the passive drug storage and propulsion unit; the reuse control unit includes a control module and a first rechargeable battery, the first rechargeable battery being electrically connected to the control module; the reuse control unit charging unit has a second rechargeable battery and two sets of reuse control unit charging ports; each reuse control unit charging port is detachably connected to the reuse control unit.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more particularly to a drug injection device. Background Technology

[0002] Wearable medical devices are electronic medical devices that are wearable and portable, and are mainly used for health monitoring, disease treatment, and remote rehabilitation.

[0003] Currently available wearable injection devices generally suffer from problems such as excessive size and weight, inconvenience in carrying, high price, and non-reusable electronic modules. Furthermore, they lack interactive control via mobile handheld terminals, requiring patients to manually complete the injection process using an injector, resulting in insufficient intelligence at the control end and a poor user experience.

[0004] Future wearable medical devices will develop towards high integration, diversified measurement, low power consumption, and long battery life. Wireless transmission is the foundation for wearable medical devices to collect, transmit, store, and analyze physiological data. The miniaturization of wearable medical devices and the massive amount of health data place higher application requirements on wireless transmission technology. Summary of the Invention

[0005] The purpose of this invention is to provide a drug injection device that enables intelligent drug injection and allows the electronic module of the drug injection device to be reused.

[0006] To achieve the above objectives, the present invention provides a drug injection device, which includes: a passive drug storage and pushing unit, a reuse control unit, an external control unit, and a reuse control unit charging unit;

[0007] The passive drug storage and propulsion unit includes a drug storage module, a mechanical propulsion module, and an injection mechanism; the mechanical propulsion module is connected to the drug storage module; the injection mechanism is connected to both the drug storage module and the mechanical propulsion module.

[0008] The reuse control unit is detachably connected to the passive drug storage and pushing unit; the reuse control unit includes a control module and a first rechargeable battery, and the first rechargeable battery is electrically connected to the control module.

[0009] The charging unit of the multiplexing control unit has a second rechargeable battery and two sets of charging ports for the multiplexing control unit; the charging unit of the multiplexing control unit is detachably connected to the multiplexing control unit;

[0010] When the control module detects that the mechanical actuation module is connected to it, it sends a connection signal to the external control unit; the external control unit issues a drug filling prompt signal; when the drug is filled to the specified dose, the control module receives a drug filling completion signal and sends the drug filling completion signal to the external control unit; when the drug injection device is attached to the object, the external control unit sends an injection needle signal to the control module, the control module controls the mechanical actuation module to trigger the injection mechanism to perform the injection needle action, and the control module feeds back the injection needle information to the external control unit; the external control unit receives an injection needle action completion confirmation signal and generates a drug injection signal to send to the control module; the control module controls the mechanical actuation module to apply pressure to the drug storage module, so that the drug enters the injection mechanism from the drug storage module under the pressure, completing the injection action.

[0011] Preferably, the passive drug storage and pushing unit further includes a first housing; the first housing includes a first box, a first cover, and a reusable control unit accommodating area and a passive drug storage and pushing unit accommodating area formed by the first box and the first cover; the first cover is fastened to the top of the first box and is welded by laser.

[0012] More preferably, the first housing has a reuse control unit fixing component and a connecting male seat; the reuse control unit fixing component is disposed in the reuse control unit receiving area; the connecting male seat is injection molded together with the first housing of the reuse unit receiving area; the connecting male seat has a sealing waterproof rubber ring.

[0013] More preferably, the mechanical actuation module includes a pusher and a push plug; the push plug extends into the drug storage module; the pusher is connected to the push plug and is electrically connected to the control module.

[0014] Preferably, the pushing component includes a connecting bracket, a pusher shaft, a drive wire, a ratchet, and a rocker arm;

[0015] The connecting bracket is electrically connected to the control module; one end of the pusher shaft is connected to the pusher, and the other end is connected to the connecting bracket; the ratchet passes through the pusher shaft; the drive wire is connected to the connecting bracket; and the rocker arm is connected to the connecting bracket.

[0016] More preferably, the rocker arm has a vertical connecting portion and a paddle; the vertical connecting portion is connected to the connecting bracket; the paddle is integrally connected to the vertical connecting portion and extends toward the ratchet.

[0017] More preferably, the pusher also has an injection mechanism trigger module; the injection mechanism trigger module is connected to the ratchet.

[0018] More preferably, the injection mechanism has a drug delivery tube, an injection needle module, and a drug injection needle;

[0019] One end of the drug delivery tube is connected to the drug storage module, and the other end passes through the injection needle module and is connected to the drug injection needle; the injection needle module is connected to the injection mechanism trigger module.

[0020] Preferably, the reuse control unit further includes a second housing; the second housing includes a second box, a second cover, and a receiving area formed by the second box and the second cover; the second cover and the second box are laser-welded; the second box has a connecting female seat that is injection molded with the second box; the receiving area is used to house the first rechargeable battery and the control module.

[0021] Preferably, the multiplexing control unit further includes an alarm module; the alarm module is electrically connected to the control module.

[0022] The drug injection device provided in this invention, through the detachable connection between the reusable control unit and the passive drug storage and pushing unit, allows the electronic and mechanical parts of the drug injection device to be separated, enabling plug-and-play operation. This allows the electronic part to be reused, reducing environmental pollution and costs. The external control unit enables the drug injection device to be intelligent, eliminating the need for manual needle injection and greatly improving the user experience. Simultaneously, the reusable control unit charging unit has two charging ports, allowing simultaneous charging of two reusable control units. The charging unit itself also has a second rechargeable battery, providing energy storage functionality, thus eliminating the hassle of connecting a charging cable during use. Attached Figure Description

[0023] Figure 1 A top view of the drug injection device provided in an embodiment of the present invention;

[0024] Figure 2 This is a structural diagram of the control module provided in an embodiment of the present invention;

[0025] Figure 3 A structural diagram of the first rechargeable battery provided in an embodiment of the present invention;

[0026] Figure 4 A structural diagram of the second housing provided in an embodiment of the present invention;

[0027] Figure 5 This is a structural diagram of the alarm module provided in an embodiment of the present invention;

[0028] Figure 6 This is one of the partial structural diagrams of the passive drug storage and propulsion unit provided in an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram showing the connection relationship between the passive drug storage and propulsion unit and the reuse control unit provided in an embodiment of the present invention;

[0030] Figure 8 This is a second partial structural diagram of the passive drug storage and propulsion unit provided in an embodiment of the present invention;

[0031] Figure 9 A top view of the first housing provided in an embodiment of the present invention;

[0032] Figure 10 A front view of the first housing provided in an embodiment of the present invention;

[0033] Figure 11 This is one of the top views of the first box in the open state provided in an embodiment of the present invention;

[0034] Figure 12 This is a second top view of the first box in the open state provided in an embodiment of the present invention;

[0035] Figure 13 This is a front view of a drug injection device provided in an embodiment of the present invention;

[0036] Figure 14 This is a structural diagram of the charging unit of the multiplexed control unit provided in an embodiment of the present invention. Detailed Implementation

[0037] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0038] The present invention provides a drug injection device, the bottom of which is attached to the surface of the object to be injected (the user's skin) through a non-woven fabric, which can realize intelligent drug injection.

[0039] Figure 1 A top view of the drug injection device provided in an embodiment of the present invention, as shown below. Figure 1 As shown in the figure, the drug injection device provided in this embodiment of the invention specifically includes: an external control unit (not shown in the figure), a reuse control unit 1, a passive drug storage and pushing unit 2, and a reuse control unit charging unit 3.

[0040] The external control unit is the main control module of the drug injection device. Specifically, it can be an application (APP) installed on a mobile terminal, which facilitates user control, realizes the intelligence of the drug injection device, and improves the user experience.

[0041] The reuse control unit 1 is the drive mechanism and electronic component of the drug injection device. It is detachably connected to the passive drug storage and propulsion unit 2, enabling recycling and reducing the cost of the drug injection device. Combined with... Figure 2 and Figure 3 As shown, the multiplexing control unit 1 may specifically include a control module 10 and a first rechargeable battery 11. The control module 10 can receive Bluetooth signals, etc., sent by an external control unit, and then parse the Bluetooth signals to generate electrical signals that the passive drug delivery unit 2 can recognize. The Bluetooth signals may specifically include the injection volume and injection time. The first rechargeable battery 11 is electrically connected to the control module 10 and mainly provides the power required for the operation of the control module 10.

[0042] like Figure 4 As shown, to reduce the size of the drug injection device and facilitate installation, the reusable control unit 1 also includes a second housing 12. The shape of the second housing 12 can be a cuboid or a cube. The second housing 12 includes a second box body 121, a second cover body 122, and a receiving area 123.

[0043] The second housing 121 has a connection port 1211 and a connection female 1212 on one side. The connection female 1212 is located inside the connection port 1211 and is injection molded with the second housing 121, which improves waterproofness. The connection female 1212 is electrically connected to the first rechargeable battery 11.

[0044] The accommodating area 123 is the space enclosed by the second box 121 and the second cover 122, and is used to accommodate the first rechargeable battery 11 and the control module 10.

[0045] The second cover 122 and the second box 121 are welded together by laser, which protects the control module 10 and the first rechargeable battery 11 by sealing them together, and also improves the sealing and waterproof performance of the reused control unit 1.

[0046] In a preferred embodiment, the reuse control unit 1 further includes an alarm module 13, such as Figure 5 As shown. The alarm module 13 is housed within the second housing 121 and is electrically connected to the control module 10. When the control module 10 detects that the power level of the first rechargeable battery 11 is lower than a preset power threshold, it generates an alarm signal and sends it to the alarm module 13, prompting the user to replace or recharge the first rechargeable battery 11 in a timely manner. The alarm module 13 can be implemented in various ways, including but not limited to ceramic sound-generating plates and miniature vibration motors.

[0047] The passive drug storage and propulsion unit 2 is the execution module of the drug injection device, and also a single-use module of the drug injection device. Combined with... Figure 6 and Figure 8As shown, the passive drug storage and propulsion unit 2 may specifically include a drug storage module 21, a mechanical propulsion module 22, and an injection mechanism 23.

[0048] The drug storage module 21 is a space for storing drugs. In this example, the drug storage module 21 is specifically elliptical in shape, with an arc-shaped protrusion at the bottom (not shown in the figure). The top has a drug output pipe 211 and a drug injection pipe 212. The drug output pipe 211 is located on one side of the top of the drug storage module 21, and the drug injection pipe 212 is positioned opposite to the drug output pipe 211. In a preferred embodiment, to ensure complete drug output without residue, a mechanical push module limiting structure 213 is also provided at the top of the drug storage module 21.

[0049] In this example, the mechanical actuation module 22 specifically includes a pusher 221 and a pusher plug 222. The outer diameter of the pusher plug 222 matches the inner diameter of the drug storage module 21. The pusher plug 222 extends into the drug storage module 21 and is limited by the mechanical actuation module limiting structure 213 during forward movement. Axial sliding is prevented by the arc-shaped protrusion at the bottom of the drug storage module 21, improving the injection accuracy. The pusher 221 is connected to the pusher plug 222 and provides a driving force for the movement of the pusher plug 222, causing the pusher plug 222 to squeeze the drug in the drug storage module 21, thereby entering the drug output pipe 211.

[0050] In a specific example, and combined with Figure 7 As shown, the pusher 221 may specifically include a connecting bracket 2211, a pusher shaft 2212, a drive wire 2213, a ratchet 2214, and a rocker arm 2215.

[0051] The connecting bracket 2211 is the supporting structure for the pusher 221 and also the structure electrically connected to the multiplexing control unit 1. One end of the pusher shaft 2212 is connected to the pusher 222, and the other end is connected to the connecting bracket 2211. A ratchet 2214 passes through the pusher shaft 2212. The drive wire 2213 is located below the drug storage module 21 and is connected to the connecting bracket 2211. The ratchet 2214 has a boss 22140 and a notch 22141, with the notch 22141 located opposite the boss 22140. The rocker arm 2215 has a vertical connecting part and a lever 22151. The vertical connecting part is connected to the connecting bracket 2211. The lever 22151 is integrally connected to the vertical connecting part and extends toward the ratchet 2214.

[0052] Specifically, the pusher 221 can be connected to the wire 200 via the connecting bracket 2211, and the wire 200 is then connected to the connecting female 1212, thereby achieving electrical connection with the control module 10. When the multiplexing control unit 1 sends an electrical signal, it energizes the drive wire 2213 through the wire 200 and the connecting female 1212. The drive wire 2213 is heated and contracts, performing a reciprocating motion, which drives the rocker arm 2215 to reciprocate. This causes the paddle 22151 to rotate the ratchet 2214, pushing the pusher shaft 2212 forward, and thus pushing the pusher 222 to exert a squeezing force on the drug.

[0053] In a preferred embodiment, the pusher 221 also has an injection mechanism trigger module 2216. The injection mechanism trigger module 2216 is connected to the ratchet 2214.

[0054] In this example, the injection mechanism trigger module 2216 may specifically include a locking pin 22161 and a locking pin spring 22162, with the locking pin spring 22162 sleeved on the outside of the locking pin 22161. One end of the locking pin 22161 abuts against the boss 22140 of the ratchet 2214, and the other end is connected to the injection mechanism 23.

[0055] The injection mechanism 23 is connected to the drug storage module 21 and the mechanical actuation module 22, respectively. In this example, the injection mechanism 23 has an injection needle module 231, a drug conduit 232, and a drug injection needle 233.

[0056] The injection needle module 231 specifically includes a needle holder 2311 and a push needle spring 2312. The push needle spring 2312 passes through the needle holder 2311. The drug injection needle 233 is connected to the needle holder 2311. One end of the drug delivery tube 232 extends into the drug output tube 211, and the other end passes through the push needle spring 2312 and connects to the drug injection needle 233. Before injection, the needle holder 2311 is connected to the injection mechanism trigger module 2216, and the locking pin 22161 abuts against the boss 22140, fixing the needle holder 2311 in the stored position, thereby putting the push needle spring 2312 in a stored state. When the ratchet 2214 rotates, the notch 22141 of the ratchet 2214 contacts the locking pin 22161, the locking pin 22161 moves toward the ratchet 2214, the locking pin spring 22162 is released and moves away from the needle holder 2311, causing the needle holder 2311 to move forward, the needle push spring 2312 is released, and the needle push action is completed instantaneously.

[0057] In a preferred embodiment, combining Figure 9 As shown, the passive drug storage and propulsion unit 2 also includes a first housing 24. Combined with... Figure 10 and 11As shown, the first housing 24 includes a first cover 240, a first box 241, and a reuse control unit accommodating area 242 and a passive drug storage and pushing unit accommodating area 243 formed by the first box 241 and the first cover 240. The first box 241 has a reuse control unit fixing member 2411 and a connecting male 2412. The reuse control unit fixing member 2411 is disposed in the reuse control unit accommodating area 242. The connecting male 2412 is disposed on one side of the first box 241 in the reuse control unit accommodating area 242, and has a waterproof rubber ring 24121 for the connecting male accommodating area 242. Combined with... Figure 12 As shown, the connector 2412 is electrically connected to the wire 200. The passive drug storage and actuation unit 2 is housed in the passive drug storage and actuation unit housing area 243. The first cover 240 is fastened to the top of the first housing 241 and sealed by laser welding, giving the passive drug storage and actuation unit 2 excellent waterproof performance.

[0058] Combination Figure 13 As shown, the male connector 2412 achieves electrical connection through the insertion of the female connector 1212 into the connector port 1211, thereby enabling the multiplex control unit 1 and the passive drug storage and pushing unit 2 to be plugged in and unplugged. Due to the waterproof rubber ring 24121 of the male connector, the connection between the male connector 2412 and the female connector 1212 is waterproof, thus making the entire drug injection device have good waterproof performance.

[0059] like Figure 14 As shown, the multiplexing control unit charging unit 3 has a second rechargeable battery (not shown) and two sets of multiplexing control unit charging ports 31. The second rechargeable battery enables the multiplexing control unit charging unit 3 to have its own energy storage function. The multiplexing control unit charging unit 3 is located outside the first housing 24 and the second housing 12, and is detachably connected to the multiplexing control unit 1 for charging the multiplexing control unit 1. The two sets of multiplexing control unit charging ports 31 allow the multiplexing control unit charging unit 3 to charge two multiplexing control units 1 simultaneously.

[0060] The above describes the components of the drug injection device and the connections between them. The working principle of the drug injection device will be described below.

[0061] Connect the male connector 2412 through the connector 1211 and insert it into the female connector 1212 to make an electrical connection between the multiplex control unit 1 and the passive drug storage and pushing unit 2; attach the bottom of the drug injection device to the surface of the object to be injected by means of non-woven fabric or the like.

[0062] When the control module 10 detects that the mechanical push module 22 is connected to it, it sends a connection signal to the external control unit; the external control unit issues a drug filling prompt signal.

[0063] When the drug is filled to the specified dose (referring to the maximum dose), the control module 10 receives the drug filling completion signal and sends the drug filling completion signal to the external control unit.

[0064] When the drug injection device is attached to the object, the external control unit sends an injection needle signal to the control module 10. The control module 10 controls the mechanical push module 22 to trigger the injection mechanism 23 to perform the injection needle action. Specifically, the control module 10 controls the first rechargeable battery 11 to power the drive wire 2213 through the female connector 1212 and the male connector 2412. The drive wire 2213 reciprocates due to heat, causing the rocker arm 2215 to reciprocate. This causes the paddle 22151 to rotate the ratchet 2214, pushing the pusher shaft 2212 forward, which in turn pushes the pusher 222 to exert a squeezing force on the drug.

[0065] Subsequently, the control module 10 feeds back the injection needle information to the external control unit; the external control unit receives the injection needle action completion confirmation signal and generates a drug injection signal to send to the control module 10; the control module 10 controls the mechanical push module 22 to apply pressure to the drug storage module 21, so that the drug enters the injection mechanism 23 from the drug storage module 21 under pressure, completing the injection action. That is, when the ratchet 2214 rotates, the notch 22141 of the ratchet 2214 contacts the locking pin 22161, the locking pin 22161 moves towards the ratchet 2214, the locking pin spring 22162 is released, moving away from the needle holder 2311, causing the needle holder 2311 to move forward, the needle push spring 2312 is released, and the needle push action is completed instantaneously.

[0066] The drug injection device provided in this invention, through the detachable connection between the reusable control unit and the passive drug storage and pushing unit, allows the electronic and mechanical parts of the drug injection device to be separated, enabling plug-and-play operation. This allows the electronic part to be reused, reducing environmental pollution and costs. The external control unit enables the drug injection device to be intelligent, eliminating the need for manual needle injection and greatly improving the user experience. Simultaneously, the reusable control unit charging unit has two charging ports, allowing simultaneous charging of two reusable control units. The charging unit itself also has a second rechargeable battery, providing energy storage functionality, thus eliminating the hassle of connecting a charging cable during use.

[0067] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A drug injection device, characterized in that, The drug injection device includes: a passive drug storage and propulsion unit, a reuse control unit, an external control unit, and a reuse control unit charging unit; The passive drug storage and propulsion unit includes a drug storage module, a mechanical propulsion module, and an injection mechanism; the mechanical propulsion module is connected to the drug storage module; the injection mechanism is connected to both the drug storage module and the mechanical propulsion module. The reuse control unit is detachably connected to the passive drug storage and pushing unit and sends electrical signals; the reuse control unit includes a control module and a first rechargeable battery, the first rechargeable battery being electrically connected to the control module; the reuse control unit also includes an alarm module; the alarm module is electrically connected to the control module; The charging unit of the multiplexing control unit has a second rechargeable battery and two sets of charging ports for the multiplexing control unit; the charging unit of the multiplexing control unit is detachably connected to the multiplexing control unit; The mechanical actuation module includes a pusher and a pusher plug; the pusher plug extends into the drug storage module; the pusher is connected to the pusher plug and is electrically connected to the control module. When the control module detects that the mechanical actuation module is connected to it, it sends a connection signal to the external control unit; the external control unit issues a drug filling prompt signal; when the drug is filled to the specified dose, the control module receives a drug filling completion signal and sends the drug filling completion signal to the external control unit; when the drug injection device is attached to the object, the external control unit sends an injection needle signal to the control module, the control module controls the mechanical actuation module to trigger the injection mechanism to perform the injection needle action, and the control module feeds back the injection needle information to the external control unit; the external control unit receives an injection needle action completion confirmation signal and generates a drug injection signal to send to the control module; the control module controls the mechanical actuation module to apply pressure to the drug storage module, so that the drug enters the injection mechanism from the drug storage module under the pressure, completing the injection action.

2. The drug injection device according to claim 1, characterized in that, The passive drug storage and propulsion unit further includes a first housing; the first housing includes a first box, a first cover, and a reusable control unit accommodating area and a passive drug storage and propulsion unit accommodating area formed by the first box and the first cover; the first cover is fastened to the top of the first box and is welded by laser.

3. The drug injection device according to claim 2, characterized in that, The first housing has a reuse control unit fixing component and a connecting male socket; the reuse control unit fixing component is disposed in the reuse control unit receiving area; the connecting male socket is injection molded together with the first housing of the reuse control unit receiving area; the connecting male socket has a sealing waterproof rubber ring.

4. The drug injection device according to claim 1, characterized in that, The pushing component includes a connecting bracket, a pusher shaft, a drive wire, a ratchet, and a rocker arm; The connecting bracket is electrically connected to the control module; one end of the pusher shaft is connected to the pusher, and the other end is connected to the connecting bracket; The ratchet is mounted on the pusher shaft; the drive wire is connected to the connecting bracket; and the rocker arm is connected to the connecting bracket.

5. The drug injection device according to claim 4, characterized in that, The rocker arm has a vertical connecting part and a paddle; the vertical connecting part is connected to the connecting bracket; the paddle is integrally connected to the vertical connecting part and extends toward the ratchet.

6. The drug injection device according to claim 4, characterized in that, The pusher also has an injection mechanism trigger module; the injection mechanism trigger module is connected to the ratchet.

7. The drug injection device according to claim 6, characterized in that, The injection mechanism includes a drug delivery tube, an injection needle module, and a drug injection needle; One end of the drug delivery tube is connected to the drug storage module, and the other end passes through the injection needle module and is connected to the drug injection needle; the injection needle module is connected to the injection mechanism trigger module.

8. The drug injection device according to claim 1, characterized in that, The reuse control unit further includes a second housing; the second housing includes a second box, a second cover, and a receiving area formed by the second box and the second cover; the second cover and the second box are laser welded; the second box has a connecting female seat that is injection molded with the second box; the receiving area is used to house the first rechargeable battery and the control module.

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