A high-precision indwelling needle infusion system

Abstract

The present application discloses a high-precision indwelling needle infusion system, including an infusion set and an indwelling needle. The indwelling needle is connected to the infusion set through a flexible tube. A plurality of independent liquid medicine chambers are provided in the infusion set, and each liquid medicine chamber is connected to a corresponding liquid medicine pump. The liquid outlets of the liquid medicine pumps are all communicated with the flexible tube, and a speed adjusting device is provided on the liquid medicine pump for adjusting the liquid medicine pumping speed. The infusion set is bound to the arm, different medicines are added to different liquid medicine chambers, and the speed adjusting device is used to adjust the pumping speeds of different liquid medicines to meet different infusion requirements of different liquid medicines; moreover, different liquid medicines will not be pre-mixed, avoiding the reaction problem between medicines and improving safety.

Description

Technical Field

[0001] This application belongs to the field of medical devices, and particularly relates to a high-precision indwelling needle infusion system. Background Art

[0002] In the modern medical system, the infusion system is the most commonly used means of drug injection. With the continuous progress of medical technology, the emergence of indwelling needles has solved the pain of patients being frequently pricked.

[0003] For some chronic diseases, such as diabetes, hyperthyroidism, etc., patients need to inject drugs regularly to maintain the body's functions. The traditional indwelling needle only provides a manual injection function, and still requires manual injection of drugs. Moreover, in the case of patients suffering from multiple diseases or needing to inject different drugs regularly, patients or their families usually cause untimely injection or drug confusion due to human reasons, and the consequences are unimaginable.

[0004] The existing automated infusion systems are bulky and not easy to carry, and can only infuse one drug at a time. In the case of needing to frequently inject multiple drugs and various drugs are not allowed to be mixed, the existing infusion systems are difficult to meet the usage requirements.

[0005] Therefore, an indwelling needle infusion system is needed to solve the above problems. Summary of the Invention

[0006] To solve the deficiencies of the existing technology described above, this application provides an indwelling needle infusion system that can store several different liquid medicines and set different infusion rates for infusion.

[0007] The technical effects to be achieved by this application are realized through the following solutions:

[0008] According to the first aspect of this application, a high-precision indwelling needle infusion system is provided, including an infusion device and an indwelling needle. The indwelling needle is connected to the infusion device through a flexible tube. Several independent liquid medicine chambers are provided in the infusion device, and each liquid medicine chamber is connected to a corresponding liquid medicine pump. The liquid outlets of the liquid medicine pumps are all communicated with the flexible tube, and a speed adjustment device is provided on the liquid medicine pump for adjusting the liquid medicine pumping speed.

[0009] Through this solution, the infusion device is bound to the arm, different medicines are added to different liquid medicine chambers, and the speed adjustment device is used to adjust the liquid medicine pumping speeds of different liquid medicines to meet the different infusion requirements of different liquid medicines; moreover, different liquid medicines are not pre-mixed, avoiding the reaction problem between drugs and improving safety.

[0010] Preferably, a liquid medicine bag is provided in the liquid medicine chamber. The liquid medicine bag is connected to the liquid medicine pump through a liquid discharge tube, and a medicine adding port is provided on the liquid discharge tube.

[0011] With this solution, as the liquid medicine is discharged, the liquid medicine bag can deflate accordingly, preventing air from mixing in; moreover, it can ensure that the liquid medicine is completely discharged.

[0012] Preferably, the liquid discharge pipe extends into the liquid medicine bag, and a plurality of liquid discharge holes are evenly arranged on the liquid discharge pipe extending into the liquid medicine bag.

[0013] With this solution, it is ensured that the liquid can be discharged from all positions in the liquid medicine bag, avoiding the problem that the liquid at the rear end of the liquid medicine bag cannot be discharged due to the deflation of the front end of the liquid medicine bag in the later stage of infusion.

[0014] Preferably, the liquid discharge pipe is an elastic hose, the liquid medicine pump is located in the installation cavity of the infusion device, and the liquid medicine pump is a peristaltic pump and is matched with the liquid discharge pipe.

[0015] With this solution, the peristaltic pump can improve the conveying accuracy and does not allow the liquid medicine to come into contact with the outside world, improving safety.

[0016] Preferably, a plurality of the liquid medicine pumps are all driven to rotate by the same driving motor, the rotating shaft of the driving motor penetrates through and connects all the liquid medicine pumps, driving gears corresponding to the liquid medicine pumps one by one are arranged on the rotating shaft, the speed regulating device includes a plurality of gear sets with different transmission ratios, and the liquid medicine pumps adjust the pumping speed by rotating different gear sets.

[0017] With this solution, after selecting a suitable gear set according to different pumping speeds, all the liquid medicine pumps can be driven by using the same driving motor, which not only reduces the equipment cost, but also greatly reduces the energy consumption, increases the service life of this device, and improves the user experience.

[0018] Preferably, the liquid medicine pump includes a mounting frame, a conveying track belt, and a plurality of supporting gears, the supporting gears are rotatably connected to the mounting frame, the conveying track belt is wound around the supporting gears and meshes with them, and the gear set is connected to the supporting gears.

[0019] With this solution, after a plurality of supporting gears support the conveying track belt, the rotation of any one of the supporting gears can drive the conveying track belt to rotate to pump the liquid medicine; the gear set is installed on the mounting frame to achieve one-to-one correspondence with the supporting gears, and adjusting the meshing of different gear sets with the driving gears can complete the adjustment of different pumping speeds.

[0020] Preferably, the gear set includes a first gear, a second gear, and a third gear, the first gear and the second gear are coaxially arranged, the first gear meshes with the driving gear, the third gear and the supporting gear are coaxially arranged, and the second gear meshes with the third gear; the transmission ratios of the second gear and the third gear in different gear sets are different.

[0021] With this solution, the diameters and heights of the first gears of all gear sets are the same, facilitating meshing with the driving gear; the transmission ratio between the second gear and the third gear is used to achieve adjustment of different speeds of the conveying track.

[0022] Preferably, the mounting frame is slidably connected to the mounting cavity, the arrangement direction between the gear sets is the same as the sliding direction of the mounting frame, and the movement of the mounting frame causes different first gears to mesh with the driving gear respectively.

[0023] With this solution, since the heights of the first gears are all the same, moving the mounting frame can achieve meshing between the driving gear and different first gears, thereby achieving different pumping rates.

[0024] Preferably, a linear through hole is provided on the side wall of the mounting frame, and the rotating shaft passes through the through hole to connect the liquid medicine pump in series.

[0025] With this solution, since the rotating shaft is relatively long, the mounting frame provided with the through hole can stabilize the rotating shaft and ensure its stable operation; the linear structure can facilitate the front-back adjustment of the mounting frame and avoid interference with the rotating shaft.

[0026] Preferably, a plurality of stabilizing blocks are respectively provided on both sides of the mounting frame, and the stabilizing blocks are slidably connected to the sliding grooves on the side wall of the mounting cavity.

[0027] With this solution, the stability of the mounting frame is further improved, which can ensure that the conveying track is extruded onto the elastic hose to achieve reliable conveying.

[0028] According to an embodiment of the present application, the beneficial effects of adopting the high-precision indwelling needle infusion system of the present application are that it can simultaneously perform infusion treatment at different rates for different liquid medicines, and can separate the liquid medicines, greatly improving the safety of infusion; using the same driving motor for conveying greatly reduces energy consumption and ensures that the device has a long battery life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the existing technical solutions, the following will briefly introduce the drawings required for use in the description of the embodiments or the existing technical solutions. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 It is a schematic structural diagram of a high-precision indwelling needle infusion system in an embodiment of the present application;

[0031] Figure 2 For Figure 1Schematic diagram of the infusion set viewed from below;

[0032] Figure 3 is Figure 1 Schematic diagram of the structure of the liquid medicine chamber of the infusion set;

[0033] Figure 4 is Figure 3 Schematic cross-sectional view of the liquid medicine chamber of traditional Chinese medicine;

[0034] Figure 5 Schematic diagram of the pumping structure of the liquid medicine pump;

[0035] Figure 6 is Figure 5 Schematic diagram of the structure of the conveying track in traditional Chinese medicine;

[0036] Figure 7 Schematic diagram of the positional structure of the drive motor and the liquid medicine pump;

[0037] Figure 8 is Figure 7 Schematic diagram of the structure of the liquid medicine pump in traditional Chinese medicine;

[0038] Figure 9 is Figure 8 Schematic diagram of the inner wall structure of the mounting bracket in traditional Chinese medicine;

[0039] Figure 10 is Figure 9 Schematic diagram of the outer wall structure of the mounting bracket in traditional Chinese medicine. Detailed implementation manners

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0041] As Figures 1 to 10 shown, in a high-precision indwelling needle infusion system in an embodiment of this application, it includes an infusion set 10 and an indwelling needle 30. The indwelling needle 30 is connected to the infusion set 10 through a hose 20. A plurality of independent liquid medicine chambers 101 are provided in the infusion set 10. Each liquid medicine chamber 101 is connected to a corresponding liquid medicine pump 130. The liquid outlets of the liquid medicine pumps 130 are all communicated with the hose 20. A speed adjustment device is provided on the liquid medicine pump 130 for adjusting the delivery speed of the liquid medicine pump 130.

[0042] Through the scheme of this embodiment, the infusion set 10 is bound to the arm, different medicines are added to different medicine chambers 101, and the speed regulating device is used to adjust the pumping speed of different medicines to achieve different infusion requirements of different medicines; and different medicines will not be pre-mixed, avoiding the problem of reactions between medicines and improving safety.

[0043] In other embodiments, the number of the hoses 20 corresponds to the drug liquid chamber 101 one by one, and the drugs enter the human body through different hoses 20 to avoid drug mixing.

[0044] To facilitate the fixation of the infusion pump 10, straps 102 are provided at both ends of the infusion pump 10. The straps 102 may be made of nylon straps or elastic woven materials and can be tied and fixed to the arms or legs. To improve comfort, the infusion pump 10 is arranged to be arc-shaped to fit the curvature of the body surface.

[0045] In one embodiment of the present application, a liquid medicine bag 110 is disposed in the liquid medicine chamber 101, and the liquid medicine bag 110 is connected to the liquid medicine pump 130 via a liquid discharge pipe 120, and a drug adding port 121 is disposed on the liquid discharge pipe 120. As the liquid medicine is discharged, the liquid medicine bag 110 can be shrunk to prevent air from mixing in, and can ensure that the liquid medicine is completely discharged.

[0046] The liquid medicine bag 110 is made of medical silica gel or medical plastic material, has a certain elasticity, and can be closely attached to the inner wall of the liquid medicine chamber 101 after being filled to increase the volume. A plugging cover is provided on the drug adding port 121, which can block the drug adding port 121 when not in use. When adding medicine, the needle is aligned with the drug adding port 121 to apply pressure so that the liquid medicine can be injected into the liquid medicine bag 110. Since the liquid medicine pump 130 is in a closed state, the liquid medicine can only enter the liquid medicine bag 110 and will not overflow.

[0047] In one embodiment of the present application, the drainage tube 120 extends into the drug bag 110, and a plurality of drainage holes 121 are evenly opened on the drainage tube 120 extending into the drug bag 110. This ensures that all positions in the drug bag 110 can be drained, thereby avoiding the problem that the drug at the rear end cannot be discharged due to the front end of the drug bag 110 drying up in the later stage of infusion.

[0048] In one embodiment of the present application, the discharge tube 120 is an elastic hose, the liquid medicine pump 130 is located in the installation cavity 104 of the infusion set 10, and the liquid medicine pump 130 is a peristaltic pump and matches the discharge tube 120. The peristaltic pump can improve the delivery accuracy and prevent the liquid medicine from contacting the outside world, thereby improving safety.

[0049] In an embodiment of the present application, a plurality of liquid medicine pumps 130 are all driven to rotate by the same driving motor 140. The rotating shaft 141 of the driving motor 140 penetrates through and connects all the liquid medicine pumps 130. Driving gears 142 corresponding to the liquid medicine pumps 130 one by one are arranged on the rotating shaft 141. The speed regulating device includes a plurality of gear sets 150 with different transmission ratios. The liquid medicine pumps 130 adjust the pumping speed by rotating different gear sets 150. After selecting a suitable gear set 150 according to different pumping speeds, all the liquid medicine pumps 130 can be driven by using the same driving motor 140, which not only reduces the equipment cost, but also greatly reduces the energy consumption, increases the service life of the device, and improves the user experience.

[0050] In an embodiment of the present application, the liquid medicine pump 130 includes a mounting frame 133, a conveying track 131, and a plurality of supporting gears 132. The supporting gears 132 are rotatably connected to the mounting frame 133. The conveying track 131 surrounds the supporting gears 132 and meshes with them. The gear set 150 is connected to the supporting gear 132. After a plurality of supporting gears 132 support the conveying track 131, the rotation of any one of the supporting gears 132 can drive the conveying track 131 to rotate to pump the liquid medicine. The gear set 150 is installed on the mounting frame 133 to achieve one-to-one correspondence with the supporting gear 132. By adjusting the meshing of different gear sets 150 with the driving gear 142, the adjustment of different pumping speeds can be completed.

[0051] A plurality of paddles are arranged on the conveying track 131. The paddles can squeeze an elastic hose to cause deformation of the elastic hose and squeeze the elastic hose to the bottom of the installation cavity 104. The conveying track 131 is made of materials such as rubber, silica gel, or nylon, and has flexibility and can be bent to achieve rotary conveyance.

[0052] Tooth grooves matching the supporting gears 132 are arranged on the inner side of the conveying track 131 to improve the conveyance reliability. Each group of supporting gears 132 can include two, which not only improves the supporting strength, but also can improve the conveyance reliability.

[0053] In an embodiment of the present application, the gear set 150 includes a first gear 151, a second gear 152, and a third gear 153. The first gear 151 and the second gear 152 are coaxially arranged. The first gear 151 meshes with the driving gear 142. The third gear 153 and the supporting gear 132 are coaxially arranged. The second gear 152 meshes with the third gear 153. The transmission ratios of the second gear 152 and the third gear 153 in different gear sets 150 are different. The diameters and heights of the first gears 151 of all the gear sets 150 are the same, which is convenient for meshing with the driving gear 142. By using the transmission ratio of the second gear 152 and the third gear 153, different speeds of the conveying track 131 can be adjusted.

[0054] In an embodiment of the present application, the mounting bracket 133 is slidably connected to the mounting cavity 104. The arrangement direction between the gear sets 150 is consistent with the sliding direction of the mounting bracket 133. The movement of the mounting bracket 133 causes different first gears 151 to be respectively engaged with the driving gear 142. Since the heights of the first gears 151 are all the same, moving the mounting bracket 133 can achieve the engagement of the driving gear 142 with different first gears 151, thereby realizing different pumping rates.

[0055] In an embodiment of the present application, a linear through hole 1331 is provided on the side wall of the mounting bracket 133. The rotating shaft 141 passes through the through hole 1331 to connect the liquid medicine pump 130 in series. Since the rotating shaft 141 is relatively long, the mounting bracket 133 provided with the through hole 1331 can stabilize the rotating shaft 141 and ensure the stability of its operation; the linear structure can facilitate the front-back adjustment of the mounting bracket 133 and avoid interference with the rotating shaft 141.

[0056] A handle 160 is provided on the top of the mounting bracket 133, which is convenient for applying force to move the mounting bracket 133 to different positions for infusion at different rates; a fixator 161 can be provided on the handle 160, a fixing hole is provided at the corresponding position of the infusion device 10, and pins 162 are provided at both ends of the fixator 161. The pins 162 can be inserted into the fixing hole to complete positioning, so as to prevent the mounting bracket 133 from moving driven by the conveying track 131 during rotation.

[0057] The fixator 161 is elastically connected to the handle 160 through a spring. The spring always applies an elastic force to insert the fixator 161 into the fixing hole to improve reliability. During use, after pulling the fixator 161 upward to adjust the position of the mounting bracket 133, when reaching the required position, release the fixator 161 to make the pin 162 insert into the fixing hole. The position of the fixing hole is consistent with the position of the gear set 150, so that the driving gear 142 can just be engaged with the corresponding first gear 151.

[0058] In order to facilitate observation and adjustment, a magnification mark is provided at the fixing hole, and the current flow rate is calculated through the magnification mark. The driving motor 140 is connected to the rotating shaft 141 through a speed reducer.

[0059] In an embodiment of the present application, a plurality of stabilizing blocks 1332 are respectively provided on both sides of the mounting bracket 133. The stabilizing blocks 1332 are slidably connected to the sliding grooves on the side walls of the mounting cavity 104. The stability of the mounting bracket 133 is further improved, which can ensure that the conveying track 131 is pressed against the elastic hose to achieve reliable conveying.

[0060] It also includes a controller, a sensor, and a battery. The battery powers the controller, the sensor, and the drive motor 140. The controller is used to control the start and stop of the drive motor 140, and collect and process the values of the sensor for alarm. The sensor is used to detect the liquid level of the infusion set 10 and give an alarm in time through sound and light.

[0061] When this device is in use, first inject different liquid medicines into different liquid medicine bags 110 through the medicine adding port 121, then tie this device to the arm, insert the indwelling needle 30 into the back of the hand or the arm, and then fix the hose 20.

[0062] By adjusting the liquid medicine pump 130 up and down to the corresponding magnification, making the corresponding gear set 150 on the liquid medicine pump 130 engage with the drive gear 142, after fixing the positions of all the liquid medicine pumps 130, inputting the corresponding start and stop parameters, such as starting for 10 minutes per hour, or starting 3 times a day, 20 minutes each time, etc., automated infusion can be carried out; different liquid medicines are mixed in the hose 20 and enter the human body, or are connected to the indwelling needle 30 through different hoses 20, and will not be mixed prematurely to cause slow reaction of the medicine.

[0063] According to an embodiment of the present application, the beneficial effects of adopting the high-precision indwelling needle infusion system of the present application are that it can simultaneously perform infusion processing on different liquid medicines at different rates, and can separate the liquid medicines, greatly improving the safety of infusion; using the same drive motor for transportation greatly reduces the energy consumption and ensures that this device has a long battery life.

[0064] It should be noted that the above detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0065] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or their combinations.

[0066] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above drawings are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0067] Furthermore, the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that comprises a series of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0068] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above that", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" can include both the orientation of "above" and "below". The device may also be otherwise oriented, such as rotated 90 degrees or at other orientations, and the corresponding explanations of the spatial relative descriptions used herein will be made accordingly.

[0069] In the foregoing detailed description, reference has been made to the accompanying drawings, which form a part hereof. In the drawings, like symbols typically identify like components, unless the context indicates otherwise. The illustrated embodiments described in the detailed description, the drawings, and the claims are not meant to be limiting. Other embodiments may be used and other changes may be made without departing from the spirit or scope of the subject matter presented herein.

[0070] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-precision indwelling needle infusion system, comprising an infusion set and an indwelling needle, wherein the indwelling needle is connected to the infusion set via a hose, characterized in that: The infusion set is provided with a plurality of independent liquid medicine chambers, each of which is connected to a corresponding liquid medicine pump, the liquid outlets of which are connected to the hose, and the liquid medicine pump is provided with a speed regulating device for regulating the pumping speed of the liquid medicine; a liquid medicine bag is provided in the liquid medicine chamber, and the liquid medicine bag is connected to the liquid medicine pump through a drainage tube, and a drug adding port is provided on the drainage tube; the drainage tube extends into the liquid medicine bag, and a plurality of drainage holes are evenly opened on the drainage tube extending into the liquid medicine bag; the drainage tube is an elastic hose, the liquid medicine pump is located in the installation cavity of the infusion set, and the liquid medicine pump is a peristaltic pump and matches the drainage tube; The plurality of liquid medicine pumps are driven to rotate by the same driving motor, the rotating shaft of the driving motor passes through and connects all the liquid medicine pumps, the rotating shaft is provided with driving gears corresponding to the liquid medicine pumps one by one, the speed regulating device comprises a plurality of gear sets with different transmission ratios, and the liquid medicine pump adjusts the pumping speed by rotating different gear sets; the liquid medicine pump comprises a mounting frame, a conveying track and a plurality of supporting gears, the supporting gears are rotatably connected to the mounting frame, the conveying track is wrapped around the supporting gears and meshed therewith, and the gear set is connected to the supporting gears; the gear set comprises a first gear, a second gear and a third gear, the first gear is coaxially arranged with the second gear, the first gear is meshed with the driving gear, the third gear is coaxially arranged with the supporting gear, and the second gear is meshed with the third gear; the transmission ratios of the second gear and the third gear in different gear sets are different.

2. The high-precision indwelling needle infusion system according to claim 1, characterized in that: The mounting frame is slidably connected to the mounting cavity, the arrangement direction of the gear sets is consistent with the sliding direction of the mounting frame, and the movement of the mounting frame causes different first gears to mesh with the driving gears respectively.

3. The high-precision indwelling needle infusion system according to claim 2, characterized in that: A straight through hole is disposed on the side wall of the mounting frame, and the rotating shaft is connected in series with the liquid medicine pump through the through hole.

4. The high-precision indwelling needle infusion system according to claim 2, characterized in that: A plurality of stabilizing blocks are respectively arranged on both sides of the mounting frame, and the stabilizing blocks are slidably connected to the sliding grooves of the side walls of the mounting cavity.

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