High-precision indwelling needle infusion system

Abstract

The invention discloses a high-precision indwelling needle infusion system which comprises an infusion apparatus and an indwelling needle, the indwelling needle is connected to the infusion apparatus through a hose, a plurality of independent liquid medicine cavities are formed in the infusion apparatus, each liquid medicine cavity is connected with a corresponding liquid medicine pump, liquid outlets of the liquid medicine pumps are communicated to the hose, and the hose is connected with the indwelling needle. A speed adjusting device is arranged on the liquid medicine pump and used for adjusting the liquid medicine pumping speed. When the infusion apparatus is used, the infusion apparatus is bound on an arm, different medicines are added into different liquid medicine cavities, and the pumping speeds of different liquid medicines are adjusted by using the speed adjusting device, so that different infusion requirements of different liquid medicines are met; different liquid medicines cannot be mixed in advance, so that the problem of reaction among medicines is avoided, and the safety is improved.

Description

Technical Field

[0001] The present application belongs to the field of medical devices, and in particular 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 advancement of medical technology, the emergence of indwelling needles has solved the pain of frequent injections for patients.

[0003] For some chronic diseases, such as diabetes, hyperthyroidism and other diseases, patients need to inject drugs regularly to maintain body functions. Traditional indwelling needles only provide manual injection functions and still need to be manually injected with drugs. Moreover, for patients with multiple diseases or who need to inject different drugs regularly, patients or their families usually fail to inject them in time or mix up the drugs due to human factors, resulting in disastrous consequences.

[0004] The existing automated infusion system is bulky and difficult to carry, and can only infuse one drug at a time. When multiple drugs need to be injected frequently and mixing of various drugs is not allowed, the existing infusion system is difficult to meet the use requirements.

[0005] Therefore, there is a need for an indwelling needle infusion system that can solve the above problems. Summary of the invention

[0006] In order to address the deficiencies of the prior art, the present application provides an indwelling needle infusion system that can store several different kinds of liquid medicines and set different infusion rates for infusion.

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

[0008] According to the first aspect of the present application, a high-precision indwelling needle infusion system is provided, comprising an infusion set and an indwelling needle, wherein the indwelling needle is connected to the infusion set via a hose, wherein the infusion set is provided with a plurality of independent drug liquid chambers, each of which is connected to a corresponding drug liquid pump, wherein the liquid outlets of the drug liquid pumps are connected to the hose, and wherein a speed regulating device is provided on the drug liquid pump for regulating the drug liquid pumping speed.

[0009] Through this solution, the infusion set is bound to the arm, different medicines are added to different medicine chambers, 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 drugs and improving safety.

[0010] Preferably, a medicine liquid bag is arranged in the medicine liquid cavity, the medicine liquid bag is connected to the medicine liquid pump via a drainage tube, and a medicine adding port is arranged on the drainage tube.

[0011] Through this solution, as the medicine liquid is discharged, the medicine liquid bag can be shrunk to avoid air mixing; and it can ensure that the medicine liquid is completely discharged.

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

[0013] This solution ensures that all positions in the medicine bag can be drained, thus avoiding the problem that the medicine at the rear end cannot be drained due to the front end of the medicine bag drying up in the later stage of infusion.

[0014] Preferably, the drainage tube is an elastic hose, the drug liquid pump is located in the installation cavity of the infusion set, and the drug liquid pump is a peristaltic pump and matches the drainage tube.

[0015] Through this solution, the peristaltic pump can improve the delivery accuracy and prevent the drug solution from contacting the outside world, thereby improving safety.

[0016] Preferably, the several medicine liquid pumps are driven to rotate by the same driving motor, the rotating shaft of the driving motor passes through and connects all the medicine liquid pumps, the rotating shaft is provided with driving gears corresponding to the medicine liquid pumps one by one, the speed adjustment device includes several gear sets with different transmission ratios, and the medicine liquid pump adjusts the pumping speed by rotating different gear sets.

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

[0018] Preferably, the liquid medicine pump includes 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 with them, and the gear set is connected to the supporting gears.

[0019] Through this solution, after several supporting gears support the conveying crawler, the rotation of any supporting gear can drive the conveying crawler to rotate to pump the liquid medicine; the gear group is installed on the mounting frame to achieve a one-to-one correspondence with the supporting gears, and the adjustment of different pumping speeds can be completed by adjusting the meshing of different gear groups with the driving gear.

[0020] Preferably, the gear set includes 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 ratio of the second gear to the third gear in different gear sets is different.

[0021] Through this solution, the diameter and height of the first gear of all gear sets are consistent, which is convenient for meshing with the driving gear; the transmission ratio of the second gear and the third gear is used to achieve the adjustment of different speeds of the conveyor crawler.

[0022] Preferably, 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.

[0023] Through this solution, since the heights of the first gears are all consistent, the mobile mounting frame can achieve the engagement of the driving gear with different first gears, thereby achieving different pumping rates.

[0024] Preferably, a side wall of the mounting frame is provided with a straight through hole, and the rotating shaft is connected in series with the liquid medicine pump through the through hole.

[0025] With this solution, since the rotating shaft is relatively long, the mounting frame with through holes can stabilize the rotating shaft to ensure the stability of its operation; the straight-line structure can facilitate the front and rear adjustment of the mounting frame to avoid interference with the rotating shaft.

[0026] Preferably, 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.

[0027] Through this solution, the stability of the mounting frame is further improved, and reliable transportation can be achieved by squeezing the conveying crawler onto the elastic hose.

[0028] According to one embodiment of the present application, the beneficial effect of using the high-precision indwelling needle infusion system of the present application is that it can simultaneously process the infusion of different rates of different medicines, and can separate the medicines, which greatly improves the safety of infusion; using the same drive motor for delivery 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0031] Figure 2 for Figure 1A schematic diagram of the structure of the infusion set viewed from above;

[0032] Figure 3 for Figure 1 A schematic diagram of the structure of the drug solution chamber of the middle infusion set;

[0033] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the Chinese medicine liquid cavity;

[0034] Figure 5 It is a schematic diagram of the pumping structure of the liquid medicine pump;

[0035] Figure 6 for Figure 5 Schematic diagram of the structure of the conveyor track;

[0036] Figure 7 It is a schematic diagram of the position structure of the driving motor and the liquid medicine pump;

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

[0038] Fig. 9 for Figure 8 Schematic diagram of the inner wall structure of the middle mounting frame;

[0039] Fig.10 for Fig. 9 Schematic diagram of the outer wall structure of the middle mounting frame. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] like Figures 1 to 10 As shown, a high-precision indwelling needle infusion system in an embodiment of the present application 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 drug liquid chambers 101 are provided in the infusion set 10. Each drug liquid chamber 101 is connected to a corresponding drug liquid pump 130. The liquid outlets of the drug liquid pump 130 are connected to the hose 20. A speed regulating device is provided on the drug liquid pump 130 for regulating the delivery speed of the drug liquid 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 one embodiment of the present application, a plurality of liquid medicine pumps 130 are driven to rotate by the same driving motor 140, the rotating shaft 141 of the driving motor 140 penetrates and connects all the liquid medicine pumps 130, and a driving gear 142 corresponding to each of the liquid medicine pumps 130 is provided on the rotating shaft 141, and the speed regulating device includes a plurality of gear sets 150 with different transmission ratios, and the liquid medicine pump 130 adjusts the pumping speed by rotating different gear sets 150. After selecting a suitable gear set 150 according to different pumping speeds, the same driving motor 140 can be used to drive all the liquid medicine pumps 130, which not only reduces the equipment cost, but also greatly reduces the energy consumption, increases the use time of the device, and improves the user experience.

[0050] In one 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 is wrapped around the supporting gears 132 and meshed therewith, and the gear set 150 is connected to the supporting gears 132. After the plurality of supporting gears 132 support the conveying track 131, the rotation of any supporting gear 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 a one-to-one correspondence with the supporting gears 132, and the adjustment of different pumping speeds can be completed by adjusting the meshing of different gear sets 150 with the driving gear 142.

[0051] The conveyor belt 131 is provided with a plurality of paddles, which can be pressed onto the elastic hose to deform the elastic hose and squeeze the elastic hose to the bottom of the installation cavity 104. The conveyor belt 131 is made of rubber, silicone or nylon, etc., is flexible, and can be bent to achieve rotational conveying.

[0052] A tooth groove matching the supporting gear 132 is provided on the inner side of the conveying crawler 131 to improve the conveying reliability; each group of supporting gears 132 may include two, which not only improves the supporting strength but also improves the conveying reliability.

[0053] In one 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, and the first gear 151 is meshed with the driving gear 142. The third gear 153 is coaxially arranged with the supporting gear 132, and the second gear 152 is meshed 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 diameter and height of the first gear 151 of all gear sets 150 are consistent, which is convenient for meshing with the driving gear 142. The transmission ratio of the second gear 152 and the third gear 153 is used to adjust the different speeds of the conveying crawler 131.

[0054] In one embodiment of the present application, the mounting frame 133 is slidably connected to the mounting cavity 104, the arrangement direction of the gear sets 150 is consistent with the sliding direction of the mounting frame 133, and the movement of the mounting frame 133 enables different first gears 151 to respectively mesh with the driving gear 142. Since the heights of the first gears 151 are all consistent, the moving mounting frame 133 can enable the driving gear 142 to mesh with different first gears 151, thereby achieving different pumping rates.

[0055] In one embodiment of the present application, the side wall of the mounting frame 133 is provided with a straight through hole 1331, and the rotating shaft 141 is connected in series with the liquid medicine pump 130 through the through hole 1331. Since the rotating shaft 141 is relatively long, the mounting frame 133 provided with the through hole 1331 can stabilize the rotating shaft 141 to ensure the stability of its operation; the straight structure can facilitate the front and rear adjustment of the mounting frame 133 to avoid interference with the rotating shaft 141.

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

[0057] The holder 161 is elastically connected to the handle 160 through a spring, and the spring always applies elastic force to the holder 161 to insert it into the fixing hole to improve reliability. When in use, the holder 161 is pulled upward and the position of the mounting frame 133 is adjusted. When the desired position is reached, the holder 161 is released to allow the latch 162 to be inserted 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 be exactly 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 by the magnification mark. The driving motor 140 is connected to the rotating shaft 141 through a reducer.

[0059] In one embodiment of the present application, a plurality of stabilizing blocks 1332 are respectively arranged on both sides of the mounting frame 133, and the stabilizing blocks 1332 are slidably connected to the slide grooves on the side walls of the mounting cavity 104. The stability of the mounting frame 133 is further improved, and reliable transportation can be ensured by squeezing the conveying crawler 131 onto the elastic hose.

[0060] It also includes a controller, a sensor and a battery. The battery supplies power to 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 the sensor values ​​for processing and alarm. The sensor is used to detect the liquid level of the infusion device 10 and issue an alarm in time through sound and light.

[0061] When the device is used, different liquid medicines are first injected into different liquid medicine bags 110 through the medicine adding port 121, and then the device is tied to the arm, and the indwelling needle 30 is inserted into the back of the hand or the arm and the hose 20 is fixed;

[0062] By adjusting the medicine pump 130 up and down to the corresponding ratio, so that the corresponding gear set 150 on the medicine pump 130 is meshed with the driving gear 142, and after fixing the position of all the medicine pumps 130, the corresponding start and stop parameters are input, such as starting for 10 minutes every hour, or starting 3 times a day, each time for 20 minutes, etc., automatic infusion can be performed; different 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 there will be no premature mixing to cause a slow reaction of the drug.

[0063] According to one embodiment of the present application, the beneficial effect of using the high-precision indwelling needle infusion system of the present application is that it can simultaneously process the infusion of different rates of different medicines, and can separate the medicines, which greatly improves the safety of infusion; using the same drive motor for delivery greatly reduces energy consumption and ensures that the device has a long battery life.

[0064] It should be noted that the above detailed descriptions are exemplary and are 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 art 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, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

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

[0067] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0068] For ease of description, spatially relative terms, such as "above", "above", "on the upper surface of", "above", etc., may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, such as rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0069] In the above detailed description, reference is made to the accompanying drawings, which form a part of this document. In the accompanying drawings, similar symbols typically identify similar components unless the context indicates otherwise. The illustrated embodiments described in the detailed description, drawings, and 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 preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in 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 medicine liquid chambers, each of which is connected to a corresponding medicine liquid pump, the liquid outlets of the medicine liquid pumps are connected to the hose, and the medicine liquid pumps are provided with a speed regulating device for regulating the medicine liquid pumping speed.

2. The high-precision indwelling needle infusion system according to claim 1, characterized in that: A medicine liquid bag is arranged in the medicine liquid cavity, and the medicine liquid bag is connected to the medicine liquid pump through a drainage pipe, and a medicine adding port is arranged on the drainage pipe.

3. The high-precision indwelling needle infusion system according to claim 2, characterized in that: The drainage tube extends into the medicine bag, and a plurality of drainage holes are evenly arranged on the drainage tube extending into the medicine bag.

4. The high-precision indwelling needle infusion system according to claim 2, characterized in that: 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.

5. The high-precision indwelling needle infusion system according to claim 4, characterized in that: The plurality of medicine liquid pumps are driven to rotate by the same driving motor, the rotating shaft of the driving motor passes through and connects all the medicine liquid pumps, the rotating shaft is provided with driving gears corresponding one to one with the medicine liquid pumps, the speed regulating device includes a plurality of gear sets with different transmission ratios, and the medicine liquid pump adjusts the pumping speed by rotating different gear sets.

6. The high-precision indwelling needle infusion system according to claim 5, characterized in that: The liquid medicine pump includes a mounting frame, a conveying crawler and a plurality of supporting gears. The supporting gears are rotatably connected to the mounting frame, the conveying crawler is wrapped around the supporting gears and meshed with them, and the gear set is connected to the supporting gears.

7. The high-precision indwelling needle infusion system according to claim 6, characterized in that: The gear set includes 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.

8. The high-precision indwelling needle infusion system according to claim 7, 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.

9. The high-precision indwelling needle infusion system according to claim 8, 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.

10. The high-precision indwelling needle infusion system according to claim 8, 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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