Pasting type insulin pump

Abstract

The utility model relates to the technical field of medical instruments, and discloses an application type insulin pump which comprises a rotary knob, an outer shell and a bottom plate, the rotary knob is rotatably arranged on the outer shell, a sealed cavity is defined by the rotary knob, the outer shell and the bottom plate, and a controller, a needle assisting device, a medicine bottle, a medicine feeding piston, a piston driving structure and a medicine feeding valve are arranged in the sealed cavity; the needle assisting device is in driving connection with the knob, the power output end of the piston driving structure penetrates through the first end of the medicine bottle in the axial direction and is in driving connection with a medicine feeding piston in the medicine bottle, the end face of the second end of the medicine bottle extends outwards and is connected with the bottom plate, and the medicine feeding valve is arranged on an extending part of the end face of the second end of the medicine bottle from the bottom plate; the controller is electrically connected with the piston driving structure. By integrating the pump and the needle assisting device into a compact structure, the problems that the pump and the needle assisting device respectively belong to independent structures and are large in size, inconvenient to carry and inconvenient to operate are solved, and by means of integration and simple and convenient control, the portability of equipment and the simplicity and convenience of operation are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a patch-type insulin pump. Background Art

[0002] The patch insulin pump is a portable, micro drug delivery device that can be applied to the skin and can deliver drugs into the body through the skin. This device has a wide range of application value and prospects in the medical field, especially in situations where continuous or controlled drug release is required, such as insulin management for diabetics. It has the characteristics of portability, concealment, continuity, and controllability.

[0003] The existing patch-type insulin pumps, such as CN117679580A insulin pump and its infusion drive device, have an independent pump and a needle aid, such as CN219743566U insulin pump needle aid, but have the following problems: large size, which makes the patch pump bulky and inconvenient to carry, and the location of the patch-type insulin pump is limited; complex structure, resulting in increased overall cost and inconvenient operation. Utility Model Content

[0004] The utility model provides a patch-type insulin pump, which integrates the pump and the needle assist device into a compact structure, improves the portability and ease of operation of the device through integration and simple control, and solves the technical problems of the existing patch-type insulin pump, in which the pump and the needle assist device are independent structures, large in size, not portable, and inconvenient to operate.

[0005] The utility model provides a patch-type insulin pump, comprising a knob, an outer shell and a bottom plate, wherein the knob is rotatably arranged on the outer shell, and the knob, the outer shell and the bottom plate enclose a sealed closed cavity, wherein a controller, a needle-assisting device, a medicine bottle, a medicine-feeding piston, a piston driving structure and a medicine-delivering valve are arranged inside the sealed closed cavity; the needle-assisting device is drivingly connected to the knob, the power output end of the piston driving structure is axially penetrated through the first end of the medicine bottle and is drivingly connected to the medicine-feeding piston in the medicine bottle, the end surface of the second end of the medicine bottle is extended outwardly and connected to the bottom plate, and the medicine-delivering valve is mounted from the bottom plate to an extension of the end surface of the second end of the medicine bottle; the controller is electrically connected to the piston driving structure.

[0006] Furthermore, the knob is sealed and assembled on the opening of the outer shell and arranged vertically with the bottom plate in space. The knob is clamped in the opening of the outer shell and rotates circumferentially along the inner ring track of the opening through the clamping part.

[0007] Furthermore, a needle-assisting seat for assembling the needle-assisting device is arranged on the side of the bottom plate facing the sealed closed cavity, and the needle-assisting seat is arranged corresponding to the opening of the outer shell.

[0008] Furthermore, the needle-assisting seat includes two seat units arranged opposite to each other, and the seat unit includes a clamping part and a guide part. The clamping part is respectively arranged on both sides of the guide part, and a fixing groove is formed between the clamping part and the guide part. The guide part is provided with a guide groove arranged along the axial direction; one of the seat units is provided with a tube groove for allowing a delivery pipeline to extend into and then be connected to the soft needle of the needle-assisting device.

[0009] Furthermore, the side wall of the knob extends axially toward the base plate to form an auxiliary needle control part, and the auxiliary needle control part has a continuous multi-step step structure composed of a plurality of inner arc step units; the auxiliary needle device includes a spring, an auxiliary needle base with a guide needle and a hose base with a soft needle, the auxiliary needle base arranged away from the base plate and the hose base arranged close to the base plate are arranged in a close fit and the guide needle is inserted into the soft needle, the auxiliary needle base and the hose base are in the inner cavity of the knob, and the outer side wall of the auxiliary needle base is provided with a control block for cooperating with the continuous multi-step step structure and a first guide block penetrating through the base gap of the knob, the auxiliary needle base is overlapped and supported on the continuous multi-step step structure by the control block, and the outer side wall of the hose base is provided with a second guide block penetrating through the base gap of the knob, and the first guide block and the second guide block are both in the guide groove to limit the circumferential movement of the auxiliary needle base and the hose base and to guide the axial movement of the auxiliary needle base and the hose base; the spring is arranged between the auxiliary needle base and the knob.

[0010] Furthermore, the hose base includes a soft unit, a fixed unit and an outer shell unit. The soft needle is arranged on the side of the soft unit facing the base plate. The soft needle is penetrated through the fixed unit and the soft unit and the fixed unit are arranged in close proximity. The soft unit and the fixed unit are jointly clamped in the inner cavity of the outer shell unit, and the second guide block is on the outer wall of the outer shell unit.

[0011] Furthermore, the piston driving structure includes a stepper motor, a gear set and a threaded push rod. The power output end of the stepper motor is connected to the threaded push rod through the gear set. The threaded push rod penetrates from the first end of the medicine bottle and is rotatably connected to the inner wall of the second section of the medicine bottle. The threaded push rod and the first end of the medicine bottle are matched with a dynamic seal; the medicine feed piston is arranged in the inner cavity of the medicine bottle along the radial direction of the medicine bottle, and the medicine feed piston is threadedly connected to the threaded push rod.

[0012] Furthermore, the controller, the piston drive structure, the medicine bottle, and the needle assisting device are arranged in sequence and in a ring shape in the sealed closed cavity.

[0013] Furthermore, an assembly hole and a positioning piece are provided on the bottom plate, and a needle guard cover is sealed on the assembly hole; the patch component is positioned by the positioning piece and assembled and fixed by the assembly hole.

[0014] Furthermore, the patch assembly includes a patch and a soft rubber block, the adhesive surface of the patch is adhered with release paper; a puncture hole is opened on the patch, and the soft rubber block is arranged on the puncture hole.

[0015] The utility model has the following beneficial effects:

[0016] The utility model is a medical device for controlling blood sugar level of diabetic patients. It continuously delivers insulin to the patient's body by simulating the insulin secretion of human body. It adopts the integrated design of components such as knob, outer shell, bottom plate, controller, needle aid, medicine bottle, medicine feeding piston, piston driving structure and medicine delivery valve. There is no complicated driving mode and cumbersome driving method, so that the insulin pump is more compact, smaller in size, lower in cost and convenient for patients to carry and use. The sealed closed cavity formed by the knob, outer shell and bottom plate can ensure the stability of insulin storage environment, prevent the influence of external factors on insulin, and protect the internal mechanical structure at the same time. The driving connection between the needle aid and the knob allows the user to control the action of the needle aid by operating the knob, simplifies the operation process and improves the convenience of use. The power output end of the piston driving structure is connected to the medicine feeding piston in the medicine bottle. This design can realize accurate control of insulin delivery amount and ensure the accuracy of insulin delivery. The electrical connection between the controller and the piston driving structure enables the whole system to be controlled by electronic means, which improves the accuracy and reliability of operation. The knob controls the needle assist device, the controller controls the piston drive structure, etc., making the operation smoother and more precise, and also improving the patient's usage experience; a drug delivery valve is provided, through which the drug delivery valve can be used to replenish the medicine bottle in time, and the volume of the medicine bottle can be designed to be relatively small, which can further reduce the volume and weight of the entire pump, and provide support for further miniaturization design; this design integrates the pump and the needle assist device into a compact structure, thereby solving the problem in the prior art that the pump and the needle assist device are independent structures, resulting in large volume, inconvenience and inconvenience in operation, and improves the portability and ease of operation of the equipment through integration and simple control.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the internal structure of a patch-type insulin pump according to a preferred embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the external structure of a patch-type insulin pump according to a preferred embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the outer shell of a preferred embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the bottom plate surface structure arrangement of the preferred embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the combined structure of the needle aid and the knob on the bottom plate of the preferred embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the combined structure of the needle assisting device of the preferred embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the combined structure of the needle aid and the knob of the preferred embodiment of the utility model;

[0026] Figure 8 This is a schematic structural diagram of a hose base body of a preferred embodiment of the utility model;

[0027] Fig. 9 This is a schematic structural diagram of the bottom of the base plate of a preferred embodiment of the utility model;

[0028] Fig.10 It is a schematic structural diagram of a patch assembly of a preferred embodiment of the utility model.

[0029] Legend:

[0030] 100, knob; 101, clamping part; 102, needle-assisting control part; 1021, continuous multi-step ladder structure; 200, outer shell; 201, opening; 300, bottom plate; 301, needle-assisting seat; 3011, seat unit; 3012, clamping groove; 3013, guide groove; 3014, tube groove; 302, assembly hole; 303, positioning member; 400, controller; 500, needle-assisting device; 501, spring; 502, guide needle; 503, needle-assisting base; 5031, control block; 5032, first guide block; 504, soft needle; 505, hose base; 5051, second guide block; 5052, soft unit; 5053, fixing unit; 5054, shell unit; 600, medicine bottle; 601, extension part; 700, medicine feeding piston; 800, piston driving structure; 801, stepping motor; 802, gear set; 803, threaded push rod; 900, patch assembly; 901, patch; 902, soft rubber block; 903, puncture hole; 1000, drug administration valve. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0032] Figure 1 This is a schematic diagram of the internal structure of a patch-type insulin pump according to a preferred embodiment of the utility model; Figure 2 It is a schematic diagram of the external structure of a patch-type insulin pump according to a preferred embodiment of the utility model; Figure 3 It is a structural schematic diagram of the outer shell of a preferred embodiment of the utility model; Figure 4 It is a structural schematic diagram of the bottom plate surface structure arrangement of the preferred embodiment of the utility model; Figure 5 This is a schematic diagram of the combined structure of the needle aid and the knob on the bottom plate of the preferred embodiment of the utility model; Figure 6 This is a schematic diagram of the combined structure of the needle assisting device of the preferred embodiment of the utility model; Figure 7 This is a schematic diagram of the combined structure of the needle aid and the knob of the preferred embodiment of the utility model; Figure 8 This is a schematic structural diagram of a hose base body of a preferred embodiment of the utility model; Fig. 9 This is a schematic structural diagram of the bottom of the base plate of a preferred embodiment of the utility model; Fig.10 It is a schematic structural diagram of a patch assembly of a preferred embodiment of the utility model.

[0033] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the patch-type insulin pump of this embodiment includes a knob 100, an outer shell 200 and a base plate 300. The knob 100 is rotatably arranged on the outer shell 200. The knob 100, the outer shell 200 and the base plate 300 enclose a sealed closed cavity, and a controller 400, a needle aid 500, a medicine bottle 600, a medicine feeding piston 700, a piston driving structure 800 and a drug delivery valve 1000 are arranged inside the sealed closed cavity; the needle aid 500 is drivingly connected to the knob 100, the power output end of the piston driving structure 800 is axially penetrated through the first end of the medicine bottle 600 and is drivingly connected to the medicine feeding piston 700 in the medicine bottle 600, the end surface of the second end of the medicine bottle 600 is extended outward and connected to the base plate 300, and the drug delivery valve 1000 is installed from the base plate 300 to the extension portion 601 of the end surface of the second end of the medicine bottle 600; the controller 400 is electrically connected to the piston driving structure 800. The patch-type insulin pump is a medical device used by diabetic patients to control blood sugar levels. It continuously delivers insulin to the patient's body by simulating the secretion of insulin in the human body. It adopts an integrated design of components such as a knob 100, an outer shell 200, a bottom plate 300, a controller 400, a needle aid 500, a medicine bottle 600, a medicine inlet piston 700, a piston drive structure 800, and a drug delivery valve 1000. There is no complicated driving mode or cumbersome driving method, making the insulin pump more compact, smaller in size, lower in cost, and convenient for patients to carry and use. The sealed closed cavity formed by the knob 100, the outer shell 200 and the bottom plate 300 can ensure The storage environment of insulin is stable, which prevents the influence of external factors on insulin and protects the internal mechanical structure; the driving connection between the needle assisting device 500 and the knob 100 allows the user to control the action of the needle assisting device 500 by operating the knob 100, which simplifies the operation process and improves the convenience of use; the power output end of the piston driving structure 800 is drivingly connected to the medicine feeding piston 700 in the medicine bottle 600. This design can realize precise control of the insulin delivery amount and ensure the accuracy of insulin delivery; the electrical connection between the controller 400 and the piston driving structure 800 enables the entire system to be controlled electronically, which improves the accuracy and reliability of the operation. The knob 100 controls the needle assist device 500, the controller 400 controls the piston drive structure 800, etc., making the operation smoother and more precise, and also improving the patient's usage experience; a drug delivery valve 1000 is provided, through which the drug delivery valve 1000 can be used to replenish the medicine bottle 600 with liquid medicine in a timely manner, and the volume design of the medicine bottle 600 can be relatively small, which can further reduce the volume and weight of the entire pump, and provide support for further miniaturization design; this design integrates the pump and the needle assist device 500 into a compact structure, thereby solving the problem in the prior art that the pump and the needle assist device 500 are independent structures, resulting in large volume, inconvenience, and inconvenience in operation. Through integration and simple control, the portability and ease of operation of the equipment are improved.

[0034] like Figure 1 , Figure 2 and Figure 5 As shown, in this embodiment, the knob 100 is sealed and assembled on the opening 201 of the outer shell 200 and is arranged vertically in space with the base plate 300. The knob 100 is clamped in the opening 201 of the outer shell 200 and rotates circumferentially along the inner ring track of the opening 201 through the clamping portion 101. The sealed assembly of the knob 100 on the opening 201 of the outer shell 200 helps to maintain the internal sealing, prevent the invasion of external pollutants or microorganisms, and ensure the cleanliness and safety of the internal environment of the insulin pump; the circumferential rotation design of the knob 100 allows the user to perform precise operations, and control the action or other related functions of the needle aid 500 by rotating the knob 100, thereby realizing the implantation process of the soft needle 504 in a simple manner; the vertical arrangement of the knob 100 and the base plate 300 in space provides a stable operating platform, so that the knob 100 can remain stable when rotating, reducing errors caused by improper operation; the knob 100 The snap-fit ​​design allows it to be tightly fixed in the opening 201 of the outer shell 200, which helps to reduce the size of the overall device and improve portability; and the rotation operation design of the knob 100 can reduce the possibility of misoperation compared to the push-type operation; the snap-fit ​​portion 101 rotates circumferentially along the inner ring track of the opening 201, providing an intuitive and easy-to-operate interface, and the user can control the implantation of the soft needle 504 through a simple rotation action, thereby improving the ease of use; the sealed assembly and snap-fit ​​design of the knob 100 may also have a positive impact on the appearance of the device, providing a neat and professional appearance, increasing the attractiveness of the product.

[0035] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, a needle assisting seat 301 for assembling the needle assisting device 500 is arranged on the bottom plate 300 facing the sealed closed cavity, and the needle assisting seat 301 is arranged corresponding to the opening 201 of the outer shell 200 . The arrangement of the needle holder 301 ensures that the needle assisting device 500 can be accurately positioned at the correct position, which is crucial for ensuring that the needle assisting device 500 can correctly implant the soft needle 504 into the target position, which is crucial for insulin injection; the existence of the needle holder 301 provides a stable support point for the needle assisting device 500, which helps to accurately implant the soft needle 504 and maintain the stability of the device during the injection process after implantation, reducing injection errors caused by external factors; the corresponding arrangement of the needle holder 301 and the opening 201 of the outer shell 200 helps to accurately implant the soft needle 504; the design of the needle holder 301 simplifies the assembly process of the needle assisting device 500; the integrated design of the needle holder 301 further reflects the compactness and integration of the entire insulin pump, helps to reduce the overall size of the device and improve portability; through precise arrangement and positioning, the needle holder 301 helps to reduce the risk of misoperation and improve the safety of using the insulin pump; the design of the needle holder 301 may allow the needle assisting device 500 to be compatible with needle assisting devices 500 of different models or sizes, increasing the adaptability and flexibility of the device.

[0036] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, in this embodiment, the needle-assisting seat 301 includes two seat units 3011 arranged opposite to each other, and the seat unit 3011 includes a clamping part and a guide part. The clamping part is respectively arranged on both sides of the guide part, and a fixing groove 3012 is formed between the clamping part and the guide part. The guide part is provided with a guide groove 3013 arranged along the axial direction; one of the seat units 3011 is provided with a tube groove 3014 for allowing a conveying pipeline to extend into and then connect with the soft needle 504 of the needle-assisting device 500. The design of the two seat units 3011 has a certain adaptive deformation ability, which can accurately fix the needle assisting device 500 to ensure its accurate position during the injection process and reduce errors; the guide groove 3013 on the guide part is arranged along the axial direction, allowing the needle assisting device 500 to be properly adjusted axially during injection to adapt to different injection angles or depths; the clamping groove 3012 formed between the clamp part and the guide part provides a stable connection point, which can firmly fix the needle assisting device 500 to ensure the accurate implantation of the soft needle 504 and prevent displacement during the injection process; the design of the tube groove 3014 allows the delivery pipeline to be accurately extended and inserted. The seat unit 3011 is designed to simplify the assembly and disassembly process of the needle assisting device 500 and ensure that the needle assisting device 500 is assembled in place; the precise fixing and guiding design helps to reduce the risk of misoperation during the implantation of the soft needle 504; this design may allow the needle assisting device 500 to be compatible with delivery pipelines of different models or sizes, thereby increasing the adaptability and flexibility of the device; the precise guiding effect of the guide groove 3013 helps to reduce the pain during the implantation of the soft needle 504 and the injection after implantation, thereby improving the comfort of the patient.

[0037] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, in this embodiment, the side wall of the knob 100 extends axially toward the bottom plate 300 to form an auxiliary needle control part 102, and the auxiliary needle control part 102 has a continuous multi-level step structure 1021 composed of a plurality of inner arc step units; the auxiliary needle device 500 includes a spring 501, an auxiliary needle base 503 with a guide needle 502, and a hose base 505 with a soft needle 504. The auxiliary needle base 503 arranged away from the bottom plate 300 and the hose base 505 arranged close to the bottom plate 300 are arranged in a close fit, and the guide needle 502 is inserted into the soft needle 504. The auxiliary needle base 503 and the hose base 505 are in the inner cavity of the knob 100, and the outer wall of the auxiliary needle base 503 is provided with a The control block 5031 cooperates with the continuous multi-step step structure 1021 and the first guide block 5032 is passed through the base gap of the knob 100. The auxiliary needle base 503 is overlapped and supported on the continuous multi-step step structure 1021 through the control block 5031. The outer wall of the hose base 505 is provided with a second guide block 5051 which is passed through the base gap of the knob 100. The first guide block 5032 and the second guide block 5051 are both located in the guide groove 3013 to limit the circumferential movement of the auxiliary needle base 503 and the hose base 505 and to guide the axial movement of the auxiliary needle base 503 and the hose base 505; the spring 501 is arranged between the auxiliary needle base 503 and the knob 100. The first guide block 5032 and the second guide block 5051 are both located in the guide groove 3013, so that the auxiliary needle base 503 and the hose base 505 are relatively fixed in the circumferential direction. By rotating the knob 100, the control block 5031 is switched from an inner arc step unit of the continuous multi-step structure 1021 to the axial area of ​​another inner arc step unit, and under the release of the elastic pre-pressure of the spring 501, the auxiliary needle base 503 and the hose base 505 are pushed to slide axially along the guide groove 3013, and the control block 5031 is on the inner arc step unit in the axial area, thereby realizing that the guide needle 502 carrying the soft needle 504 can quickly and smoothly penetrate and be implanted to the preset depth of the target position. Optionally, the inner arc step unit is an arc-shaped groove structure recessed into the base, which is conducive to the hovering of the control block 5031, and a certain force needs to be applied to enable the control block 5031 to switch from the first inner arc step unit to the second inner arc step unit, thereby avoiding misoperation and improving safety.The continuous multi-step ladder structure 1021 on the needle-assisting control part 102 provides a precise control mechanism, allowing the user to finely adjust the position and depth of the needle-assisting device 500 by turning the knob 100; optionally, by setting steps of different depths, for example, the depth of the steps when turning left and right is different, different implantation depth controls of the soft needle 504 can be achieved; the cooperation of the control block 5031 and the continuous multi-step ladder structure 1021 provides a stable support for the needle-assisting base 503, ensuring the stability and accuracy of the needle-assisting device 500 during the injection process; the first guide block 5032 and the second guide block 5051 are inserted into the guide groove 3013, which limits the circumferential movement of the needle-assisting base 503 and the hose base 505, and at the same time provides guidance for their axial movement, ensuring the injection direction. Correctness; the spring 501 is arranged between the needle assisting device 503 and the knob 100, and by setting different elastic pre-pressures, the necessary elastic force is provided for the needle assisting device 500, helping the guide needle 502 to carry the soft needle 504 to quickly and smoothly penetrate and implant to the preset depth of the target position, thereby reducing the pain of the soft needle 504 implantation; the design that the needle assisting device 503 and the hose base 505 are in the inner cavity of the knob 100 makes the entire system more compact, easy to carry and use; through precise control and guiding restrictions, the risk of misoperation is reduced and the safety of the implantation of the soft needle 504 is improved; the user can control the needle assisting device 500 by simply rotating the knob 100, which simplifies the operation process, improves the convenience of use, and reduces the operation risks caused by improper operation or equipment instability.

[0038] like Figure 6 , Figure 7 and Figure 8As shown, in this embodiment, the hose base 505 includes a soft unit 5052, a fixed unit 5053 and a shell unit 5054, the soft needle 504 is arranged on the side of the soft unit 5052 facing the base plate 300, the soft needle 504 is penetrated through the fixed unit 5053 and the soft unit 5052 and the fixed unit 5053 are arranged in close contact, the soft unit 5052 and the fixed unit 5053 are jointly fixed in the inner cavity of the shell unit 5054, and the second guide block 5051 is on the outer wall of the shell unit 5054. The soft unit 5052 and the fixed unit 5053 are fixed together in the inner cavity of the shell unit 5054. This double-layer fitting structure design has a certain vibration reduction effect, which reduces the probability of repeated punctures during the implantation of the soft needle 504, thereby reducing the pain during implantation; the soft needle 504 is inserted into the fixed unit 5053, and the soft unit 5052 and the fixed unit 5053 are fitted together, which helps to ensure the precise positioning of the soft needle 504 and improve the accuracy and safety of implantation and injection; the soft unit 5052 and the fixed unit 5053 are fitted together, and the fixed unit 5053 has a clamping force on the soft needle 504, so that when the guide needle 502 is withdrawn, it can ensure that the soft needle 504 can still be stably maintained at the target position without being brought out by the guide needle 502, thereby achieving the implantation of the soft needle 504; More specifically, by operating the first guide block 5032 to reset and withdraw the guide needle 502 from the soft needle 504, and reset the control block 5031 to the initial position; the soft needle 504 is arranged on the side of the soft unit 5052 facing the base plate 300, which may help to puncture with the guide needle 502; the second guide block 5051 is on the outer wall of the shell unit 5054, providing axial movement guidance for the hose base 505, limiting circumferential movement, and ensuring the correctness of the implantation direction of the soft needle 504; the fitting arrangement of the soft unit 5052 and the fixing unit 5053 helps to reduce the displacement of the soft needle 504 during the injection process, ensuring the continuity and consistency of the injection; the precise positioning and stable structure may help to reduce the pain during the implantation and injection of the soft needle 504, and improve the comfort of the patient. Optionally, the fixing unit 5053 is configured as a conical cavity on one side facing the soft unit 5052, and the fixing unit 5053 is utilized to simultaneously form a radial clamping force and a conical surface resistance force on the soft needle 504, thereby effectively preventing the soft needle 504 from moving along with the guide needle 502 when the guide needle 502 is withdrawn from the inside, thereby enabling the soft needle 504 to be stably maintained at the target position, thereby ensuring that the soft needle 504 can stably deliver the drug solution to the target position.

[0039] like Figure 1 and Figure 4As shown, in this embodiment, the piston driving structure 800 includes a stepping motor 801, a gear set 802 and a threaded push rod 803. The power output end of the stepping motor 801 is connected to the threaded push rod 803 through the gear set 802. The threaded push rod 803 penetrates from the first end of the medicine bottle 600 and is rotatably connected to the inner wall of the second section of the medicine bottle 600. The threaded push rod 803 and the first end of the medicine bottle 600 are matched with a dynamic seal; the medicine feeding piston 700 is arranged in the inner cavity of the medicine bottle 600 along the radial direction of the medicine bottle 600, and the medicine feeding piston 700 is threadedly connected to the threaded push rod 803. The stepper motor 801 provides precise power output, which is amplified and transmitted to the threaded push rod 803 through the gear set 802, thereby realizing precise control of the amount of medicine delivered; the gear set 802 not only amplifies the power output of the motor, but also improves the transmission efficiency of the entire system, ensuring the stability of medicine delivery; the threaded push rod 803 cooperates with the dynamic seal at the first end of the medicine bottle 600 to prevent the medicine from leaking during the delivery process, ensuring the purity of the medicine and the safety of delivery; the design of the threaded push rod 803 allows it to move along the length of the medicine bottle 600, thereby adjusting the delivery amount and pressure of the medicine; the threaded connection between the threaded push rod 803 and the medicine feed piston 700 provides a reliable mechanical connection method to ensure that the medicine feed piston 700 and the threaded push rod 803 move synchronously; the design of the entire piston drive structure 800 simplifies the mechanical connection. The number and complexity of components facilitate maintenance and reduce manufacturing costs. The drug feeding piston 700 and its driving part are located inside the medicine bottle 600 and form an integral structure with the medicine bottle 600, which can further reduce the structural size and facilitate the miniaturized design of the entire patch-type insulin pump. The use of the stepper motor 801 improves the reliability of the entire system because the stepper motor performs well in control accuracy and repeatability. This design may allow the piston driving structure 800 to adapt to medicine bottles 600 of different capacities and shapes, providing a wide range of applications and facilitating miniaturized design. Precise control and mechanical connection reduce errors in the drug delivery process and improve the accuracy of treatment. Precise control and reliable mechanical connection reduce possible failures during operation and improve the safety of using the patch-type insulin pump.

[0040] like Figure 1As shown, in this embodiment, the controller 400, the piston drive structure 800, the medicine bottle 600, and the needle assisting device 500 are arranged in sequence in a sealed closed cavity and in a circular arrangement. The circular arrangement helps to optimize the use of space, so that each component can be reasonably arranged in a limited space, reducing the volume of the entire insulin pump; this layout makes the insulin pump more compact, convenient for patients to carry and use, and improves portability; the circular arrangement may make the connection and operation between the various components more direct and simple, improving the convenience of user operation; the orderly arrangement of the components helps them to work together, ensuring the smoothness and synchronization of the drug delivery and injection process; the circular layout helps to reduce mutual interference between components and improve the stability and reliability of the system; the circular arrangement helps to distribute heat more evenly and avoid local overheating, especially during long-term operation; the compact and orderly layout helps to improve the working efficiency of the overall system and reduce energy loss.

[0041] like Fig. 9 As shown, in this embodiment, an assembly hole 302 and a positioning piece 303 are provided on the base plate 300 , and a needle guard cover is sealed on the assembly hole 302 ; the patch assembly 900 is positioned by the positioning piece 303 and assembled and fixed by the assembly hole 302 . The positioning piece 303 provides accurate positioning for the patch component 900, that is, it ensures that the patch components 900 and the needle aid 500 on both sides of the base plate 300 correspond precisely; the design of the assembly hole 302 and the positioning piece 303 simplifies the assembly process of the patch component 900, making the assembly faster and more convenient; through the assembly hole 302 and the positioning piece 303, the patch component 900 can be stably installed on the base plate 300 to reduce vibration or displacement during use; the needle cover on the assembly hole 302 provides a sealing effect to protect the internal components from external contamination, while protecting the guide needle 502 and the soft needle 504 from damage; this design may allow the base plate 300 to adapt to patch components 900 of different models or sizes, increasing the adaptability and flexibility of the device; precise positioning and assembly reduce errors in the component installation process and improve the reliability of the device.

[0042] like Fig.10As shown, in this embodiment, the patch assembly 900 includes a patch 901 and a soft rubber block 902 , and the adhesive surface of the patch 901 is adhered with release paper; a puncture hole 903 is opened on the patch 901 , and the soft rubber block 902 is arranged on the puncture hole 903 . The release paper on the patch 901 is convenient for the user to protect the adhesive surface during installation, avoid contamination or accidental sticking, and ensure one-time correct sticking; the puncture hole 903 provides a precise puncture point for the soft needle 504, ensuring that the soft needle 504 can accurately penetrate the skin during injection and reduce errors; the soft rubber block 902 is arranged on the puncture hole 903, which may play a buffering role, reduce the direct impact on the skin during puncture, and reduce pain; the soft rubber block 902 provides additional stability for the patch assembly 900 to prevent the patch 901 from shifting during the injection process; the soft rubber block 902 helps to form a seal around the puncture hole 903 to prevent the leakage of the drug solution and the entry of external contaminants; the soft material of the soft rubber block 902 may improve the comfort of the patient when wearing it; the design of the patch 901 is convenient for the user to replace the new patch 901 and keep the injection site clean and hygienic; the soft rubber block 902 can reduce the discomfort or allergic reaction caused by direct contact between the skin and the patch 901; the presence of the soft rubber block 902 may reduce the risk of accidental injury to the puncture hole 903 when not in use.

[0043] Matters not covered in this utility model are known technologies.

[0044] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

[0046] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A patch-type insulin pump, comprising a knob (100), an outer shell (200) and a bottom plate (300), The knob (100) is rotatably arranged on the outer shell (200), and the knob (100), the outer shell (200) and the bottom plate (300) are enclosed to form a sealed closed cavity. It is characterized in that A controller (400), a needle-assisting device (500), a medicine bottle (600), a medicine-feeding piston (700), a piston driving structure (800), and a medicine-dispensing valve (1000) are arranged inside the sealed closed cavity; The needle-assisting device (500) is drivingly connected to the knob (100), and the power output end of the piston driving structure (800) is axially disposed through the first end of the medicine bottle (600) and is drivingly connected to the medicine feeding piston (700) in the medicine bottle (600). The end surface of the second end of the medicine bottle (600) is extended outward and connected to the bottom plate (300), and the drug delivery valve (1000) is installed from the bottom plate (300) to the extension portion (601) of the end surface of the second end of the medicine bottle (600); The controller (400) is electrically connected to the piston driving structure (800).

2. The patch-type insulin pump according to claim 1, characterized in that: The knob (100) is sealed and assembled on the opening (201) of the outer shell (200) and is arranged vertically with the bottom plate (300). The knob (100) is clamped in the opening (201) of the outer shell (200) and rotates circumferentially along the inner ring track of the opening (201) through the clamping portion (101).

3. The patch-type insulin pump according to claim 2, characterized in that: A needle assisting seat (301) for assembling the needle assisting device (500) is arranged on the bottom plate (300) on one side facing the sealed closed cavity. The auxiliary needle seat (301) is arranged corresponding to the opening (201) of the outer shell (200).

4. The patch-type insulin pump according to claim 3, characterized in that: The needle-assisting seat (301) comprises two seat units (3011) arranged opposite to each other. The seat unit (3011) comprises a hoop portion and a guide portion, wherein the hoop portions are arranged on both sides of the guide portion, a clamping groove (3012) is formed between the hoop portion and the guide portion, and a guide groove (3013) arranged along the axial direction is provided on the guide portion; One of the seat units (3011) is provided with a tube groove (3014) for the delivery tube to extend into and then connect with the soft needle (504) of the needle assisting device (500).

5. The patch-type insulin pump according to claim 4, characterized in that: The side wall of the knob (100) extends axially toward the bottom plate (300) to form an auxiliary needle control portion (102), and the auxiliary needle control portion (102) has a continuous multi-level step structure (1021) composed of a plurality of inner arc step units. The needle assisting device (500) comprises a spring (501), a needle assisting base (503) with a guide needle (502), and a hose base (505) with a soft needle (504). The needle assisting base (503) arranged away from the bottom plate (300) and the hose base (505) arranged close to the bottom plate (300) are arranged in close contact with each other, and the guide needle (502) is inserted into the soft needle (504). The needle assisting base (503) and the hose base (505) are located in the inner cavity of the knob (100). A control block (5031) for cooperating with the continuous multi-step ladder structure (1021) and a first guide block (5032) penetrating the base gap of the knob (100) are provided on the outer wall of the auxiliary needle base (503); the auxiliary needle base (503) is supported on the continuous multi-step ladder structure (1021) by overlapping the control block (5031); a second guide block (5051) penetrating the base gap of the knob (100) is provided on the outer wall of the hose base (505); the first guide block (5032) and the second guide block (5051) are both located in the guide groove (3013) to limit the circumferential movement of the auxiliary needle base (503) and the hose base (505) and to guide the axial movement of the auxiliary needle base (503) and the hose base (505); The spring (501) is arranged between the auxiliary needle base (503) and the knob (100).

6. The patch-type insulin pump according to claim 5, characterized in that: The hose base (505) includes a soft unit (5052), a fixing unit (5053) and a shell unit (5054). The soft needle (504) is arranged on the side of the soft unit (5052) facing the bottom plate (300), the soft needle (504) is inserted into the fixing unit (5053), and the soft unit (5052) and the fixing unit (5053) are arranged in close contact. The soft unit (5052) and the fixed unit (5053) are fixed together in the inner cavity of the outer shell unit (5054). The second guide block (5051) is located on the outer side wall of the housing unit (5054).

7. The patch-type insulin pump according to any one of claims 1 to 6, characterized in that: The piston driving structure (800) includes a stepping motor (801), a gear set (802) and a threaded push rod (803). The power output end of the stepping motor (801) is connected to the threaded push rod (803) through the gear set (802). The threaded push rod (803) penetrates from the first end of the medicine bottle (600) and is rotatably connected to the inner wall of the second section of the medicine bottle (600), and the threaded push rod (803) and the first end of the medicine bottle (600) are matched with each other in a dynamic seal; The medicine feeding piston (700) is arranged in the inner cavity of the medicine bottle (600) along the radial direction of the medicine bottle (600), and the medicine feeding piston (700) is threadedly connected to the threaded push rod (803).

8. The patch-type insulin pump according to any one of claims 1 to 6, characterized in that: The controller (400), the piston drive structure (800), the medicine bottle (600), and the needle assisting device (500) are arranged in sequence and in a ring shape in the sealed closed cavity.

9. The patch-type insulin pump according to any one of claims 1 to 6, characterized in that: An assembly hole (302) and a positioning piece (303) are provided on the bottom plate (300), and a needle protection cover is sealed on the assembly hole (302); The patch assembly (900) is positioned by a positioning piece (303) and assembled and fixed by an assembly hole (302).

10. The patch-type insulin pump according to claim 9, characterized in that: The patch assembly (900) comprises a patch (901) and a soft rubber block (902), and a release paper is pasted on the pasting surface of the patch (901); The patch (901) is provided with a puncture hole (903), and the soft rubber block (902) is arranged on the puncture hole (903).

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