Portable insulin pump device for endocrine nursing

Abstract

The invention relates to the technical field of medical instruments, in particular to an insulin pump portable device for endocrine nursing, which comprises an outer shell, a battery compartment and an injection connector are arranged on the outer shell, a fixing belt is mounted on the back of the outer shell, and an opening of the outer shell is sealed through a cover plate. A display screen for displaying injection information is arranged on the cover plate; a transmission motor, a controller, a locking assembly and a transmission assembly are arranged in the outer shell, the locking assembly and the transmission assembly are connected in a meshed mode, a control assembly is installed on the transmission assembly, and the bottom of the control assembly slides in the sensing assembly. By arranging the damping hole, the damping rod, the balance pipe structure, the push plate and the buffer spring, stable control over the moving speed of the push plate is achieved, the problem of flow velocity fluctuation caused by mechanical gaps and pipeline elasticity in the initial injection stage of the insulin pump is effectively solved, liquid medicine infusion is more stable and accurate, and stable control over blood sugar of a patient is facilitated.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically to a portable insulin pump device for endocrine care. Background Technology

[0002] Insulin pumps are essential devices in the daily treatment of diabetic patients in endocrinology departments, simulating physiological insulin secretion through continuous subcutaneous insulin infusion. Most existing portable insulin pumps use a micro-motor-driven screw to push the syringe piston for drug delivery, but this method has the following problems in practical use: First, the flow rate control precision in the initial injection phase is insufficient. Due to tubing elasticity and mechanical transmission clearances, flow rate fluctuations or a "fast at first, slow later" phenomenon easily occur at startup, affecting the stability of blood glucose control. Secondly, the lack of an effective dynamic flow rate adjustment mechanism makes it difficult to flexibly adjust the insulin requirements according to the differences in insulin needs at different times of the patient, such as pre-meal bolus doses and basal rate. Furthermore, the locking and protection mechanism of the existing device is simple in design and is prone to accidental changes in injection parameters or accidental activation due to accidental contact, posing a safety hazard. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a portable insulin pump device for endocrine care to solve the problems existing in the background art.

[0004] The present invention provides the following technical solution: a portable insulin pump device for endocrine care, comprising an outer shell, wherein the outer shell is provided with a battery compartment and an injection connector, a fixing strap is installed on the back, the opening of the outer shell is sealed by a cover plate, and the cover plate is provided with a display screen for displaying injection information; inside the outer shell are a drive motor and a controller, as well as a locking component and a transmission component that are meshed together, and a control component is installed on the transmission component, the bottom of the control component sliding in the sensing component.

[0005] Furthermore, the transmission assembly includes a threaded rod and a second gear fixedly connected to the threaded rod. The transmission motor drives the transmission assembly to rotate through the locking assembly, thereby realizing the movement of the control assembly and the push plate.

[0006] Furthermore, the sensing component includes a sensor board, inside which a position sensor and a flow rate sensor are installed; the position sensor is used to collect the position information of the push plate to determine the start and completion status of the injection task; the flow rate sensor is used to detect the liquid flow rate information inside the control component, determine the injection speed by detecting the flow rate, and adjust the position movement of the baffle component in real time.

[0007] Furthermore, the control component includes a movable sleeve with a central sliding groove; the top of the push plate is connected to the liquid medicine, and the bottom is installed on the outside of a guide rod inside the central sliding groove. A buffer spring is fitted on the outside of the guide rod, and the buffer spring applies a rightward pressure to the push plate, ensuring that it is always in contact with the right side of the central sliding groove; the movable sleeve has symmetrically arranged upper sliding grooves and positioning holes, and a baffle assembly is installed on the upper sliding groove; multiple sets of balance tubes are opened inside the movable sleeve, and these balance tubes are connected to the bottom and to the central sliding groove through damping holes; damping rods are installed at the damping holes; when the bottom of the push plate moves on the guide rod, its two sides continuously contact the damping rods at the damping holes, pressing them down into the interior and pushing the liquid inside the balance tubes to move in other directions; multiple damping rods sequentially contact the push plate, causing it to move downward and upward, thus achieving smooth control of the push plate's moving speed.

[0008] Furthermore, the locking assembly consists of a first gear, an inner fixing ring, and a control rotating shaft; one end of the control rotating shaft is installed inside the inner fixing ring, and the other end extends out of the outer housing; when the internal structure needs to be locked, rotating the control rotating shaft can lock the device and prevent accidental operation; the end of the control rotating shaft installed inside the inner fixing ring is a cam structure, and a cam rod is correspondingly installed at the cam structure; when the control rotating shaft rotates, the cam causes the cam rod to push upward; the cam rod consists of a moving rod, a baffle, and a spring, and the cam presses on the moving rod so that the baffle is inserted into the one-way groove inside the first gear, realizing the one-way locking function.

[0009] Furthermore, the first gear has a one-way groove inside, which enters the one-way groove each time the cam rod extends, thus achieving a blocking function.

[0010] Furthermore, the baffle assembly includes an arc-shaped plate, with a movable baffle fixedly connected to the bottom of the arc-shaped plate. The movable baffle has a through hole, and the baffle assembly is installed on the guide rod through the through hole. The baffle positioning plates on both sides of the bottom of the arc-shaped plate are installed in the upper sliding groove. When it is necessary to adjust the spring pressure, the baffle assembly is moved to the right and the baffle positioning plate is fixed in the positioning hole by a pin to achieve the fixing effect of different initial pressures.

[0011] Furthermore, a pneumatic rod is installed inside the movable sleeve, and the controller of the pneumatic rod is installed inside the sensing component; when it is necessary to adjust the injection speed before and after use, the controller controls the baffle assembly to move to the corresponding position, so that the buffer spring has different initial compression, thereby achieving different buffer control effects.

[0012] Furthermore, the adjustment component includes an adjustment arc plate, on which multiple adjustment movable plates are fixedly connected, each adjustment movable plate being installed at the balance pipe; the adjustment movable plates are provided with multiple adjustment through holes of different diameters; when it is necessary to adjust the liquid flow rate, the adjustment arc plate is moved, and the different adjustment through holes on the adjustment movable plate can be changed to the working position, thereby adjusting the liquid flow resistance in the balance pipe, thus giving the push plate different deceleration effects.

[0013] Furthermore, the controller is electrically connected to the drive motor, sensing components, display screen and indicator lights, and is used to control the start, stop and speed of the drive motor according to the detection signal of the sensing components, and to control the position adjustment of the baffle assembly and the adjustment assembly.

[0014] The technical effects and advantages of this invention are as follows: 1. This invention, by incorporating a damping orifice, a damping rod and a balance tube structure, as well as a push plate and a buffer spring, achieves stable control of the push plate's movement speed. This effectively solves the problem of flow rate fluctuations caused by mechanical clearances and tubing elasticity during the initial injection phase of an insulin pump, making drug infusion more stable and precise, and contributing to stable blood glucose control in patients.

[0015] 2. By incorporating a movable baffle assembly and an adjustment assembly, this invention can flexibly adjust the initial pressure of the buffer spring and the fluid flow resistance of the balance tube according to the patient's insulin requirements at different times, thereby achieving multi-level and personalized adjustment of the injection speed and significantly improving the applicability and therapeutic effect of the device.

[0016] 3. The present invention achieves reliable locking of the transmission mechanism through a cam structure with a locking component and a one-way groove, effectively preventing accidental start-up or parameter changes caused by accidental touch. At the same time, combined with the display screen and indicator lights on the cover plate, the injection status can be displayed in real time, greatly improving the safety and convenience of use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a front view of the overall structure of the present invention.

[0019] Figure 3 This is a schematic diagram of the transmission component structure of the present invention.

[0020] Figure 4 This is a schematic diagram of the control component structure of the present invention.

[0021] Figure 5 This is a schematic diagram of the locking assembly structure of the present invention.

[0022] Figure 6This is a schematic diagram of the baffle assembly structure of the present invention.

[0023] Figure 7 This is a schematic diagram of the adjustment component structure of the present invention.

[0024] The attached figures are labeled as follows: 1. Outer housing; 2. Drive motor; 3. Locking assembly; 301. First gear; 302. Inner fixing ring; 303. Control rotation shaft; 304. Lifting groove; 305. Positioning shaft; 4. Transmission assembly; 401. Threaded rod; 402. Second gear; 5. Control assembly; 501. Moving sleeve; 502. Middle sliding groove; 503. Damping hole; 504. Guide rod; 505. Balance tube; 506. Sliding adjustment groove; 507. Upper sliding groove; 508. Positioning hole; 6. Controller; 7. Push plate; 8. Sensing assembly; 801. Sensor plate; 802. Sliding detection groove; 803. Indicator light; 9. Baffle assembly; 901. Arc plate; 902. Moving baffle; 903. Baffle positioning plate; 10. Adjustment assembly; 1001. Adjusting arc plate; 1002. Adjusting moving plate; 1003. Adjusting through hole; 11. Cam rod; 12. Cover plate; 13. Fixing belt; 14. Battery compartment; 15. Injection connector. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The portable insulin pump device for endocrine care involved in the present invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1 and Figure 2 This invention provides a portable insulin pump device for endocrine care. The device includes an outer casing 1, which has a battery compartment 14 for housing a battery and an injection connector 15 for connecting to the infusion tubing. A fixing strap 13 is installed on the back of the outer casing 1 for easy wearing by the patient around the waist or arm. The opening of the outer casing 1 is sealed by a cover plate 12, which has a display screen for real-time display of injection information such as remaining medication volume, current flow rate, and battery level. Inside the outer casing 1 are a drive motor 2, a controller 6, and a locking assembly 3 and a transmission assembly 4 that are interlocked. A control assembly 5 is mounted on the transmission assembly 4, and the bottom of the control assembly 5 slides within a sensing assembly 8 to achieve position detection and feedback.

[0027] In this embodiment, it should be specifically explained that: the controller 6, as the control core of the device, is electrically connected to the drive motor 2, the sensing component 8, the display screen on the cover plate 12, and the indicator light 803. It is used to control the start, stop, and speed of the drive motor 2 according to the detection signal of the sensing component 8, and to coordinate and control the position of each adjustable component.

[0028] Reference Figure 3 The transmission assembly 4 includes a threaded rod 401 and a second gear 402 fixedly connected to the threaded rod 401. The transmission motor 2 drives the second gear 402 to rotate through the locking assembly 3, which in turn drives the threaded rod 401 to rotate. The rotational motion of the threaded rod 401 is converted into the linear movement of the control assembly 5, thereby pushing the push plate 7 forward to realize the infusion of medicine.

[0029] In this embodiment, it should be specifically noted that the sensing component 8 includes a sensor plate 801. A position sensor and a flow rate sensor are installed inside the sensor plate 801. The position sensor is used to collect the position information of the push plate 7 in real time, and by calculating the displacement, the start, progress, and completion status of the injection task can be accurately determined. The flow rate sensor is used to detect the liquid flow rate information in the balance tube 505 inside the control component 5. By detecting the flow rate, it determines whether the current injection speed matches the set value and feeds back to the controller 6 in real time, so that the controller 6 can adjust the position of the baffle assembly 9 to achieve closed-loop control.

[0030] Reference Figure 4 The control component 5 is the core component for achieving stable initial flow rate control. It includes a movable sleeve 501 with a central sliding groove 502. Liquid is loaded onto the top side of the push plate 7 via a liquid bag or syringe, and its bottom is mounted on the outside of a guide rod 504 within the central sliding groove 502. A buffer spring is fitted onto the outside of the guide rod 504, applying a rightward pressure to the push plate 7 to ensure it remains in contact with the right side of the central sliding groove 502, thus ensuring the push plate 7 is always subjected to a stable elastic force during movement.

[0031] The movable sleeve 501 has symmetrically formed upper sliding grooves 507 and positioning holes 508. A baffle assembly 9 is installed on the upper sliding groove 507 to adjust the initial compression of the buffer spring. Multiple sets of balance tubes 505 are formed inside the movable sleeve 501, communicating with the bottom and the middle sliding groove 502 through damping holes 503. A damping rod is installed at the damping hole 503. When the bottom of the push plate 7 moves on the guide rod 504, its sides continuously contact the damping rod at the damping hole 503, causing the damping rod to press down into the balance tube 505, thereby pushing the liquid (which can be a viscous medium such as silicone oil) inside the balance tube 505 to flow in other directions. Multiple damping rods sequentially contact the push plate 7, resulting in a reciprocating motion of downward and upward movement. The viscous resistance of the liquid achieves smooth control of the push plate 7's movement speed, effectively suppressing the initial flow velocity impact.

[0032] Reference Figure 5 The locking assembly 3 consists of a first gear 301, an inner fixing ring 302, and a control rotation shaft 303. One end of the control rotation shaft 303 is installed inside the inner fixing ring 302, and the other end extends out of the outer housing 1 for easy operation by the patient or medical staff. When it is necessary to lock the internal transmission mechanism, rotating the control rotation shaft 303 will lock the device, preventing changes in injection parameters or accidental activation due to accidental collisions or touches. The end of the control rotation shaft 303 installed inside the inner fixing ring 302 is a cam structure, and a cam rod 11 is correspondingly installed at this cam structure. When the control rotation shaft 303 rotates, the cam causes the cam rod 11 to be pushed upward. The cam rod 11 consists of a moving rod, a baffle, and a spring. The cam presses against the moving rod, causing the baffle to insert into the one-way groove inside the first gear 301, realizing the one-way locking function. When the control rotation shaft 303 is rotated in the opposite direction, the cam is released, and the spring causes the cam rod 11 to return to its original position, releasing the lock.

[0033] In this embodiment, it should be specifically noted that: the first gear 301 has a one-way groove inside. Each time the cam rod 11 extends, the baffle enters the one-way groove. Due to the inclined surface design of the one-way groove, the first gear 301 can only rotate in one direction after being blocked, and cannot rotate in the opposite direction, which effectively prevents the accidental input of medicine.

[0034] Reference Figure 6The baffle assembly 9 includes an arc-shaped plate 901, with a movable baffle 902 fixedly connected to the bottom of the arc-shaped plate 901. The movable baffle 902 has a through hole through which the baffle assembly 9 is mounted on the guide rod 504. Baffle positioning plates 903 on both sides of the bottom of the arc-shaped plate 901 are installed in the upper sliding groove 507. When the initial pressure of the buffer spring needs to be adjusted, the baffle assembly 9 is moved to the right, and the baffle positioning plates 903 are fixed in the positioning holes 508 using pins or other fasteners. This achieves the effect of fixing different initial pressures, thereby changing the resistance characteristics of the push plate 7 when it starts, and adapting to different base rate infusion requirements.

[0035] In this embodiment, it should be specifically noted that a pneumatic rod can also be installed inside the movable sleeve 501, and the controller of the pneumatic rod is installed inside the sensing component 8. During use, if it is necessary to adjust the injection speed according to the patient's activity status or time rhythm, such as for a large-dose infusion before a meal, the controller 6 can control the movement of the pneumatic rod to push the baffle assembly 9 to the corresponding position, so that the buffer spring has different initial compression, thereby achieving a real-time, dynamic buffer control effect.

[0036] Reference Figure 7 The adjustment component 10 is an auxiliary mechanism for finely adjusting the injection speed. It includes an adjustment arc plate 1001, on which multiple adjustment movable plates 1002 are fixedly connected. Each adjustment movable plate 1002 is correspondingly installed at the port of the balance tube 505. Multiple adjustment through holes 1003 are formed on the adjustment movable plates 1002, each with a different diameter, creating different throttling orifice diameters. When it is necessary to adjust the liquid flow resistance within the balance tube 505, the adjustment arc plate 1001 can be moved manually or electrically to switch the different adjustment through holes 1003 on the adjustment movable plates 1002 to their working positions, thereby changing the damping characteristics of the liquid flowing through the balance tube 505 and achieving multi-stage adjustment of the deceleration effect of the push plate 7.

[0037] The working principle and specific steps of this invention are as follows: The main problem addressed in this embodiment is to achieve precise and stable control of the initial injection flow rate of the insulin pump through a multi-stage damping adjustment and buffering mechanism, thereby improving the safety and adaptability of its use.

[0038] The specific steps are as follows: S1: Drug loading and initial settings: Open the cover plate 12, connect the drug bag or syringe containing insulin to the push plate 7, and connect the injection connector 15 to the infusion line. According to the doctor's order, set parameters such as the basic infusion rate and pre-meal bolus dose through the display screen on the cover plate 12 or the external terminal. The controller 6 adjusts the position of the baffle assembly 9 and the diameter of the adjustment through hole 1003 of the adjustment assembly 10 according to the set parameters. S2: Wearing and Locking: The device is worn on the appropriate part of the patient's body via the fixing strap 13. Rotating the control shaft 303 to the locking position causes the cam rod 11 to extend and insert into the one-way slot of the first gear 301, achieving mechanical locking and preventing accidental activation; S3: Initiate Injection: When the patient needs an injection, the button on the cover plate 12 or the reverse rotation control shaft 303 is unlocked, and the controller 6 starts the drive motor 2. The drive motor 2 drives the threaded rod 401 to rotate through the first gear 301 and the second gear 402, pushing the movable sleeve 501 and the push plate 7 forward; S4: Initial flow rate stability control: In the initial stage of the push plate 7 movement, its bottom slides on the guide rod 504 and contacts the damping rod at the damping hole 503 in sequence. The damping rod is compressed, which pushes the liquid in the balance tube 505 to flow. When the liquid flows through the currently selected adjustment through hole 1003 of the adjustment component 10, it generates viscous resistance. At the same time, the push plate 7 is subjected to the elastic force of the buffer spring. Under the combined action of the damping force and the spring force, the movement speed of the push plate 7 is smoothed, avoiding the impact at the moment of start-up and realizing the stable initial infusion of the drug solution. S5: Real-time monitoring and closed-loop regulation: During injection, the position sensor in the sensing component 8 monitors the position of the push plate 7 in real time and detects the amount of drug injected, while the flow rate sensor monitors the liquid flow rate in the balance tube 505 in real time. If the flow rate deviates from the set value, the controller 6 can immediately fine-tune the speed of the drive motor 2, or adjust the pneumatic rod to push the baffle assembly 9 to change the initial pressure of the spring, or even drive the adjustment component 10 through a micro motor to switch the adjustment through-hole 1003 with different diameters to correct the flow rate to the target range, thereby achieving closed-loop control; S6: Injection Completion and Standby: When the position sensor detects that the push plate 7 has reached the predetermined position, it determines that the drug infusion is complete. The controller 6 stops the drive motor 2 and can notify the patient through sound or indicator light 803. Subsequently, the control rotation shaft 303 can be rotated again to the locked position to put the device into a safe standby state, waiting for the next injection command. S7: Replacement and maintenance: After the medicine is used up, open the cover plate 12, take out the old medicine bag, replace it with a new medicine bag, and adjust the settings of the baffle assembly 9 and the adjustment assembly 10 as needed for the next use.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable insulin pump device for endocrine care, comprising an outer housing (1), characterized in that: The outer casing (1) is provided with a battery compartment (14) and an injection connector (15), and a fixing strap (13) is installed on the back. The opening of the outer casing (1) is sealed by a cover plate (12). Inside the outer casing (1) are a drive motor (2) and a controller (6), as well as a locking assembly (3) and a transmission assembly (4) that are meshed together. A control assembly (5) is installed on the transmission assembly (4), and the bottom of the control assembly (5) slides in the sensing assembly (8). The cover plate (12) is provided with a display screen for displaying injection information; the sensing component (8) is provided with an indicator light (803); the controller (6) is electrically connected to the drive motor (2), the sensing component (8), the display screen and the indicator light (803).

2. The portable insulin pump device for endocrine care according to claim 1, characterized in that: The transmission assembly (4) includes a threaded rod (401) and a second gear (402) fixedly connected to the threaded rod (401); the transmission motor (2) drives the transmission assembly (4) to rotate through the locking assembly (3), thereby realizing the movement of the control assembly (5) and the push plate (7).

3. The portable insulin pump device for endocrine care according to claim 1, characterized in that: The sensing component (8) includes a sensor board (801), which is equipped with a position sensor and a flow rate sensor. The position sensor is used to collect the position information of the push plate (7), and the flow rate sensor is used to detect the liquid flow rate information inside the control component (5) and adjust the position movement of the baffle component (9) in real time.

4. The portable insulin pump device for endocrine care according to claim 1, characterized in that: The control component (5) includes a movable sleeve (501) with a middle sliding groove (502) on it; the top of the push plate (7) is connected to the liquid medicine, and the bottom is installed on the outside of the guide rod (504) in the middle sliding groove (502), and a buffer spring is fitted on the outside of the guide rod (504); the movable sleeve (501) is symmetrically provided with an upper sliding groove (507) and a positioning hole (508), and a baffle assembly (9) is installed on the upper sliding groove (507); multiple sets of balance tubes (505) are opened inside the movable sleeve (501), and the multiple sets of balance tubes (505) are connected to the bottom and connected to the middle sliding groove (502) through a damping hole (503); a damping rod is installed at the damping hole (503).

5. A portable insulin pump device for endocrine care according to claim 1, characterized in that: The locking assembly (3) consists of a first gear (301), an inner fixing ring (302) and a control rotating shaft (303); one end of the control rotating shaft (303) is installed inside the inner fixing ring (302), and the other end extends out of the outer housing (1); the end of the control rotating shaft (303) installed inside the inner fixing ring (302) is a cam structure, and a cam rod (11) is installed at the cam structure.

6. A portable insulin pump device for endocrine care according to claim 5, characterized in that: The first gear (301) has a one-way groove inside; the cam rod (11) is composed of a moving rod, a baffle and a spring. The cam presses on the moving rod so that the baffle is inserted into the one-way groove inside the first gear (301) to realize the one-way locking function.

7. A portable insulin pump device for endocrine care according to claim 1, characterized in that: The baffle assembly (9) includes an arc plate (901), a movable baffle (902) is fixedly connected to the bottom of the arc plate (901), and a through hole is provided on the movable baffle (902); the baffle positioning plates (903) on both sides of the bottom of the arc plate (901) are installed in the upper sliding groove (507).

8. A portable insulin pump device for endocrine care according to claim 4, characterized in that: The movable sleeve (501) is equipped with a pneumatic rod, and the controller of the pneumatic rod is installed in the sensing component (8); the controller controls the baffle component (9) to move to the corresponding position to achieve different buffer control effects.

9. A portable insulin pump device for endocrine care according to claim 1, characterized in that: It also includes an adjustment component (10), which includes an adjustment arc plate (1001), and multiple adjustment moving plates (1002) are fixedly connected to the adjustment arc plate (1001). Each adjustment moving plate (1002) is installed at the balance pipe (505). Multiple adjustment through holes (1003) with different diameters are opened on the adjustment moving plate (1002).

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