Electric control infusion auxiliary device

Abstract

The utility model discloses an electric control infusion auxiliary device which comprises a bag body, an extrusion clamp, a sliding groove, a numerical control assembly and a pulley. The upper end and the lower end of the bag body are provided with an upper opening and a lower opening; a hanging belt is arranged on the outer back side surface of the bag body close to the upper opening; the extrusion clamp comprises an L-shaped long strip, an L-shaped short strip and a straight strip; a sliding groove is adhered to the outer front side surface of the bag body; the numerical control assembly comprises a shell, a switch, a motor, a power source, a microcontroller, a pressure sensor and an input button. The motor, the power source, the pressure sensor and the input button are electrically connected with the microcontroller. The side, close to the L-shaped short strip, of the straight strip is fixedly connected with the side, close to the straight strip, of the L-shaped short strip through a shell. A pulley groove is formed in one side, close to the bag body, of the shell; the pressure sensor comprises a pressure sensing element, and the pressure sensing element is located between the pulley groove and the pulley. The problems that residual liquid medicine is wasted, gravity difference infusion is limited, and blood returns after infusion is completed are solved.

Description

Technical Field

[0001] This utility model relates to the field of assistive medical device technology, and more specifically, to an electrically controlled infusion auxiliary device. Background Technology

[0002] Infusion assist devices are innovative medical devices primarily designed to improve the safety and convenience of intravenous infusions. With the continuous development of medical technology, their clinical application is becoming increasingly widespread, bringing numerous benefits to patients and healthcare professionals. The technological background of infusion assist devices stems from many problems inherent in traditional infusion processes, such as inaccurate infusion rate control, easy backflow of blood after infusion, and easy dislodgement of infusion tubing when the patient moves. Infusion assist devices have a wide range of applications. In hospital wards, they can improve the efficiency of infusion management and reduce the workload of healthcare professionals. In home care, they ensure infusion safety and reduce the burden on family members when patients receive infusion treatment at home. In emergency outdoor settings, infusion assist devices are designed to be portable and convenient for providing infusion treatment to patients.

[0003] Chinese Patent Application Document 1 (Application No.: 200920281085X, Application Date: 2009.12.12) discloses an infusion auxiliary device, including a tray 1', the shape and size of which are the same as those of an infusion bag. The tray 1' has fixing buckles 2' for the infusion bag on both sides, which are movably connected to the tray. A bottleneck fixing buckle 3' is provided at the bottleneck of the tray 1'. The above-mentioned infusion auxiliary device cannot solve the problem of normal output of residual medicine in the infusion bag or medicine in the vortex.

[0004] Chinese Patent Application Document 2 (Application No.: 2023214761337, Application Date: 2023.06.09) discloses an automatic locking infusion tube clamp, comprising: a housing, the housing having an infusion tube slot for accommodating an infusion tube, the housing being located within the infusion tube slot, and a liquid detection sensor being positioned adjacent to the infusion tube slot; the housing also contains a control circuit board and a clamping mechanism, the clamping mechanism including a telescopic motor and a locking slider connected to the output shaft of the telescopic motor, the control circuit board being electrically connected to the telescopic motor and the liquid detection sensor, the telescopic motor driving the locking slider to extend into the infusion tube slot to clamp and lock the infusion tube, the telescopic motor driving the locking slider to retract from the infusion tube slot to release the infusion tube; the above-mentioned automatic locking infusion tube clamp device cannot fundamentally solve the problem of normal output of residual medicine in the infusion bag or medicine in the vortex, and the automatic locking infusion tube clamp device is heavy, has a complex mechanism, is not conducive to mobility and use in outdoor emergency locations, and its function is relatively limited.

[0005] Chinese Patent Application Document 3 (Application No.: 2012200779093, Application Date: 2012.02.27) discloses a medical safety infusion assist device, including a blood pressure input device and a blood pressure display connected by a data cable, a temperature input device and a temperature display connected by a data cable, the blood pressure display and the temperature display being placed on a housing and respectively connected to a power cord, an infusion tube engagement channel being placed on one side of the housing, a magnet being placed above the infusion tube engagement channel, one end of a sliding rheostat being connected to an electromagnet via a wire, and the other end being connected to the blood pressure input device via a wire, the electromagnet being placed on the infusion tube engagement channel and parallel to the magnet, and the sliding rheostat being placed inside the housing. This medical safety infusion assist device cannot be used without an infusion stand, and the person needs to raise the infusion bag. In addition, it also has the shortcomings of Chinese Patent Application Documents 1 and 2 mentioned above.

[0006] Chinese Patent Application Document 4 (Application No.: 2021111722586, Application Date: 2021.10.08) discloses a medical infusion intelligent regulating device, including a base plate, a clamping plate for clamping an infusion bag and a squeezing plate for squeezing the infusion bag on the base plate, a driving device for driving the squeezing plate to rotate and squeeze the infusion bag, and a control device for controlling the speed at which the driving device drives the squeezing plate to rotate. Because the squeezing plate of the above-mentioned medical infusion intelligent regulating device is immovable, it is impossible to completely squeeze out the medicine in the bag, which will still result in medicine waste; at the same time, the above-mentioned device still relies on high and low pressure differences for infusion.

[0007] Chinese Patent Application Document 5 (Application No.: 2023208415356, Application Date: 2023.04.14) discloses an infusion auxiliary device, including an auxiliary device body, which comprises a layered structure formed by stacking a base fabric layer and an adhesive layer. An air bladder is set inside the auxiliary device body structure. A control valve that allows unidirectional gas flow is set on the surface of the first air bladder near the base fabric layer. Each valve disc of the control valve can determine whether the control valve is open or closed. The above device mainly solves the problems related to puncture and needle removal during the infusion process, but does not solve the problems of drug waste and drug input rate control.

[0008] Chinese Patent Application Document 6 (Application No.: 2023218412195, Application Date: 2023.07.13) discloses an infusion auxiliary device, including a housing and a circuit board disposed within the housing. An infusion tube channel is provided in the housing along the length of the circuit board. One end of the circuit board has a waterproof charging interface. A waterproof membrane is provided on the circuit board. The waterproof charging interface includes a first housing, a second housing, and a conductive tongue. The conductive tongue includes a conductive terminal and a plastic body. The first housing is installed inside the second housing, and the conductive tongue is installed inside the first housing. An L-shaped bend extends inward from the bottom of the first housing, and a bend extends inward from the bottom of the second housing. A receiving groove is formed between the bend and the bend. The end of the conductive tongue and the receiving groove are filled with waterproof adhesive to form a waterproof adhesive layer. The tail of the conductive terminal passes through the waterproof adhesive layer, which is located between the circuit board and the conductive tongue. The above-mentioned device is heavy and inconvenient to move freely, cannot adapt to some special occasions, is expensive, has a delicate internal structure, and lacks broad environmental applicability.

[0009] Chinese Patent Application Document 7 (Application No.: 2022229450707, Application Date: 2022.11.03) discloses a controllable infusion auxiliary device, including an infusion assembly, a working rod and a float each having two vertical grooves symmetrically arranged, the working rod being connected to the float through a ball between the two vertical grooves, the lower end of the working rod having several rows of outlet holes of progressively decreasing size, a connecting piece being fixedly connected to the working rod through a bottom through hole, and a bottle body being threadedly connected to the connecting piece. The clamping assembly includes a housing being detachably connected to the infusion tube through a surface through hole, the bottom end of a first lead screw being rotatably connected to the housing, a first gear being fixedly connected to the first lead screw, the bottom end of a motor being fixedly connected to the housing, a second gear being rotatably connected to the motor and meshing with the first gear, a limiting rod being fixedly connected to the housing, a push plate being threadedly connected to the first lead screw and slidably connected to the limiting rod, and a stop rod being fixedly connected to the housing. The above device does not solve the problem of wasting medicine in the bottle, nor can it overcome the limitations of gravity-based infusion.

[0010] Therefore, the technical problem that urgently needs to be solved in this field is to address the waste of residual medication in infusion bags, overcome the limitations of gravity-based infusion, enable blood return at the infusion site after medication is completed, and manufacture an economical, portable, and lightweight electrically controlled infusion auxiliary device. Utility Model Content

[0011] In view of this, the present invention provides an electrically controlled infusion auxiliary device to solve the waste of residual medication in the infusion bag, overcome the limitations of gravity-based infusion, and address the problem of blood backflow at the infusion site after medication is completed.

[0012] This application provides an electrically controlled infusion auxiliary device, comprising: a bag body, a squeezing clamp, a slide, a CNC assembly, and a pulley;

[0013] The bag is a hollow bag with a connected upper and lower opening at the top and bottom. The upper opening is long and narrow, with the length of the upper opening being the same as the width of the bag. A sealing zipper is provided at the upper opening, and the diameter of the lower opening is not less than 1cm.

[0014] The bag has a hanging strap on the outer back side near the top opening. The hanging strap can be circular, oval, triangular, or inverted U-shaped. The bag is made of transparent material.

[0015] The extrusion clamp includes an L-shaped long strip, an L-shaped short strip, and a straight strip. One end of the L-shaped long strip is connected to the L-shaped short strip via a movable bearing, and the other end of the L-shaped long strip is threadedly connected to the straight strip.

[0016] Along the length of the L-shaped strip, the orthographic projection of the straight strip coincides with the orthographic projection of the L-shaped short strip, and the side of the straight strip closer to the L-shaped short strip and the side of the L-shaped short strip closer to the straight strip do not touch.

[0017] The bag body is held between L-shaped long strips, L-shaped short strips and straight strips. A groove is glued to the outer front side of the bag body. The groove extends along the length of the bag body. The groove is a rectangular groove. The opening of the rectangular groove faces away from the bag body. The length of the groove is the same as the length of the bag body. The groove is made of metal or rubber.

[0018] The CNC assembly includes a housing, a switch, a motor, a power supply, a microcontroller, a pressure sensor, and input buttons. The housing has a hollow rectangular structure, and the motor, power supply, pressure sensor, and input buttons are electrically connected to the microcontroller.

[0019] A switch through hole and a button through hole are respectively opened on the side of the shell away from the bag body. The switch through hole and the button through hole penetrate the shell along the direction from the bag body to the shell.

[0020] Along the direction from the bag body to the housing, the orthographic projection of the switch through hole and the orthographic projection of the button through hole do not coincide. The switch is located in the switch through hole, the input button is located in the button through hole, and the motor, power supply, microcontroller and pressure sensor are located inside the housing respectively.

[0021] The straight bar near the L-shaped short bar and the L-shaped short bar near the straight bar are fixedly connected by a housing;

[0022] The shell has a corresponding slide groove on the side near the bag body, and the slide groove is recessed into the shell; the pulley is located in the slide groove, and the wheel surface of the pulley is engaged in the slide groove. The motor is connected to the pulley, and the pulley drives the shell to move downward along the length of the slide groove.

[0023] The pressure sensor includes a pressure-sensing element located between the pulley groove and the pulley, with the pulley in contact with the pressure-sensing element.

[0024] Optionally, the L-shaped strip includes a long strip segment and a short strip segment connected to the long strip segment, with the long strip segment and the short strip segment forming an L-shaped structure;

[0025] A stud is connected to the side of the long strip away from the short strip, and the stud and the short strip are parallel to each other along the length of the long strip.

[0026] The L-shaped short strip includes a long segment of the short strip and a short segment of the short strip connected to the long segment. The short segment of the short strip is located on the side of the long segment away from the straight strip, and the long segment of the short strip and the short segment of the short strip together form an L-shaped structure of the short strip.

[0027] The straight bar is threaded to the stud on the side away from the long section of the short bar. The short section of the long bar is connected to the short section of the short bar through a movable bearing. The side of the straight bar closer to the long section of the short bar and the side of the long section of the short bar closer to the straight bar are fixedly connected to the housing.

[0028] Optionally, along the length of the bag body, the thickness of the long strip is greater than the thickness of the short strip, the thickness of the short strip is greater than the thickness of the short strip, the thickness of the long strip is equal to the thickness of the short strip, and the sum of the thicknesses of the long strip and the short strip is equal to the thickness of the long strip.

[0029] Optionally, the length of the short segment of the long strip is equal to twice the width of the long segment of the long strip, and the length of the short segment of the short strip is equal to twice the width of the long segment of the long strip.

[0030] Optionally, the bag has an edge, and the top of the edge is provided with an anti-snagging ear. The anti-snagging ear is a semi-circular ring, and a rope connects the anti-snagging ear to the L-shaped strip.

[0031] Optionally, the CNC component also includes a charging interface. The housing has an interface through hole on the side away from the bag body. The interface through hole penetrates the housing in the direction from the bag body to the housing. In the direction from the bag body to the housing, the orthographic projection of the switch through hole and the orthographic projection of the button through hole do not coincide with the orthographic projection of the interface through hole. The charging interface is located in the interface through hole, and the power supply is electrically connected to the charging interface.

[0032] Compared with the prior art, the electrically controlled infusion auxiliary device provided by this utility model achieves at least the following beneficial effects:

[0033] First, the electrically controlled infusion auxiliary device provided by this utility model can solve the problem of wasting residual medication in the infusion bag, especially expensive drugs; it can control the output of medication at a uniform speed set by the input button, and prevent excessive infusion pressure during the infusion process, thus preventing backflow of blood at the infusion site. This utility model is designed with an adaptive sliding squeezing function for the pulley and squeezing clamp, which can completely squeeze out the medication in the infusion bag at a uniform speed, preventing waste of medication. Furthermore, after squeezing, the pulley and squeezing clamp do not loosen, but remain at the end point of the lower opening of the bag, preventing a sudden drop in pressure in the infusion bag, which could cause a sudden drop in pressure in the infusion tubing and backflow of blood at the infusion site.

[0034] Secondly, the electrically controlled infusion auxiliary device provided by this invention overcomes the shortcomings of traditional infusion devices that rely on gravity to deliver medication into the patient's body, avoiding backflow at the infusion site due to insufficient elevation of the infusion bag, and further expanding the adaptability of the infusion bag to more special environments. Traditional infusions rely on gravity to deliver medication from the infusion bag. This invention uses a rolling and clamping pressure to squeeze the medication, clamping the pressure and sealing the infusion bag inside the bag to prevent it from detaching. Simultaneously, the infusion bag can be placed low, or even moved by hand, increasing the mobility of the infusion device. For example, in environments where outdoor medical equipment is scarce, this invention avoids the need to elevate infusion stands and devices in some outdoor locations, making the infusion device adaptable to more extreme environments.

[0035] Third, the electric control infusion auxiliary device provided by this utility model can simultaneously achieve economical manufacturing and convenient use, providing patients with more flexibility in use; the device of this utility model is simple, detachable and reusable, and each component is lightweight and small in size, making it convenient for patients to move and use the toilet, etc., without having to move along with the heavy infusion stand when moving or using the toilet; each part is simply designed, economical in manufacturing cost, and suitable for large-scale and wide-ranging use.

[0036] Of course, any product implementing this utility model does not necessarily need to achieve all the technical effects described above at the same time.

[0037] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0039] Figure 1 This is a schematic diagram of an infusion aid device provided in Chinese patent application document 1;

[0040] Figure 2 This is a schematic diagram of the structure of an electrically controlled infusion auxiliary device provided by this utility model;

[0041] Figure 3 This is a top view of the electrically controlled infusion auxiliary device provided by this utility model;

[0042] Figure 4 yes Figure 2 Enlarged view of point A in the middle;

[0043] Figure 5 This is a logic block diagram of the CNC component provided by this utility model;

[0044] Figure 6 This utility model provides an assembly drawing of a CNC component, a portion of straight strips, and a portion of short strip long segments;

[0045] Figure 7 This is a structural schematic diagram of a CNC component provided by this utility model;

[0046] Figure 8 This is a schematic diagram of the extrusion clamp provided by this utility model;

[0047] Figure 9 This is a schematic diagram of the structure of another electrically controlled infusion auxiliary device provided by this utility model. Detailed Implementation

[0048] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0049] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0050] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0051] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0052] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0053] Example 1

[0054] Reference Figures 2-7 As shown, Figure 2 This is a schematic diagram of the structure of an electrically controlled infusion auxiliary device provided by this utility model; Figure 3 This is a top view of the electrically controlled infusion auxiliary device provided by this utility model; Figure 4 yes Figure 2 Enlarged view of point A in the middle; Figure 5 This is a logic block diagram of the CNC component provided by this utility model; Figure 6 This utility model provides an assembly drawing of a CNC component, a portion of straight strips, and a portion of short strip long segments; Figure 7 This is a schematic diagram of the structure of a CNC component provided by this utility model; the electric control infusion auxiliary device provided in this embodiment includes: bag body 1, squeezing clamp 3, slide groove 2, CNC component 5 and pulley 4;

[0055] The bag body 1 is a hollow bag body. The upper and lower ends of the bag body 1 have a connected upper opening (not marked in the figure) and a lower opening (not shown in the figure). The upper opening is long and narrow, and the length of the upper opening is the same as the width of the bag body 1. A sealing zipper 12 is provided at the upper opening. The diameter of the lower opening is not less than 1cm.

[0056] The outer back side of the bag body 1 near the top opening is provided with a hanging strap. The shape of the hanging strap is circular, oval, triangular or inverted U-shaped. The bag body 1 is made of transparent material.

[0057] The extrusion clamp 3 includes an L-shaped long strip 31, an L-shaped short strip 32 and a straight strip 33. One end of the L-shaped long strip 31 is connected to the L-shaped short strip 32 through a movable bearing, and the other end of the L-shaped long strip 31 is threadedly connected to the straight strip 33.

[0058] Along the length extension direction of the L-shaped long strip 31, the orthographic projection of the straight strip 33 coincides with the orthographic projection of the L-shaped short strip 32, and the side of the straight strip 33 near the L-shaped short strip 32 and the side of the L-shaped short strip 32 near the straight strip 33 do not contact each other.

[0059] The bag body 1 is held between an L-shaped long strip 31, an L-shaped short strip 32 and a straight strip 33. A groove 2 is glued to the outer front side of the bag body 1. The groove 2 extends along the length of the bag body 1. The groove 2 is a rectangular groove. The opening of the rectangular groove faces away from the bag body 1. The length of the groove 2 is the same as the length of the bag body 1. The material of the groove 2 is metal or rubber.

[0060] The CNC component 5 includes a housing 50, a switch 51, a motor 52, a power supply 53, a microcontroller 54, a pressure sensor 55, and an input button 56. The housing 50 has a hollow rectangular structure. The motor 52, the power supply 53, the pressure sensor 55, and the input button 56 are electrically connected to the microcontroller 54.

[0061] The housing 50 has a switch through hole (not marked in the figure) and a button through hole (not marked in the figure) on the side away from the bag body 1. The switch through hole and the button through hole penetrate the housing 50 along the direction from the bag body 1 to the housing 50.

[0062] Along the direction from the bag body 1 to the housing 50, the orthographic projection of the switch through hole and the orthographic projection of the button through hole do not coincide. The switch 51 is located inside the switch through hole, the input button 56 is located inside the button through hole, and the motor 52, power supply 53, microcontroller 54 and pressure sensor 55 are located inside the housing 50 respectively.

[0063] The straight bar 33 is fixedly connected to the side of the L-shaped short bar 32 near the side of the L-shaped short bar 32 near the side of the straight bar 33 by the housing 50;

[0064] The shell 50 has a pulley groove 501 corresponding to the slide groove 2 on the side near the bag body 1. The pulley groove 501 is recessed into the shell 50. The pulley 4 is located in the pulley groove 501. The wheel surface of the pulley 4 is engaged in the slide groove 2. The motor 52 is connected to the pulley 4. The pulley 4 drives the shell 50 to move downward along the length of the slide groove 2.

[0065] The pressure sensor 55 includes a pressure-sensing element (not shown in the figure), which is located between the pulley groove 501 and the pulley 4, and the pulley 4 is in contact with the pressure-sensing element.

[0066] For specific locations, continue to refer to... Figure 2 As shown, along the thickness direction of the bag body 1, a slide groove 2, a compression clamp 3, a pulley 4, and a CNC assembly 5 are sequentially connected to the outer surface of the bag body 1. The slide groove 2 is fixed to the outer surface of the bag body 1 along its length extension direction, and the length extension direction of the slide groove 2 is the same as that of the bag body 1. The compression clamp 3 is sleeved on the outer surface of the bag body 1 and the slide groove 2. The compression clamp 3 can move up and down along the length extension direction of the bag body 1 and can be detached from the bag body 1. The side of the compression clamp 3 away from the bag body 1 is bonded to the CNC assembly 5. A pulley 4 is fixedly installed on the side of the CNC assembly 5 near the slide groove 2, and the wheel surface of the pulley 4 slides on the side of the slide groove 2 away from the bag body 1.

[0067] Bag 1 is a hollow bag with an upper opening and a lower opening. The hollow part of bag 1 is used to hold the infusion bag. Bag 1 includes an upper bag (not shown in the figure) and a lower bag (not shown in the figure) connected to the upper bag. Along the length of bag 1, the upper bag is located at the top of bag 1, and the lower bag is located in the lower middle part of bag 1. The upper bag is hollow prism-shaped, and the lower bag is hollow frustum-shaped. The upper bag and the lower bag are integrally formed. At least one side of bag 1 is made of transparent plastic that allows the interior to be observed with the naked eye. The bag body 1 is flexible and can be compressed into a disc shape, which can then be rolled into a roll of paper. The upper opening is long and narrow, with the same width as the bag body 1, and is perpendicular to the horizontal ground and facing upwards. At the same time, a sealing zipper 12 is provided along the length of the upper opening to seal the upper opening of the bag body 1. The lower opening can be circular or rectangular. When the lower opening is circular, the diameter of the lower opening is not less than 1 cm. The lower opening is used to allow the infusion port of the infusion bag to extend out, or to allow the needle of the infusion tube to be inserted into the bag through the lower opening and inserted into the infusion bag inside the bag body 1.

[0068] A hanging strap 11 is provided on the outer back side of the bag body 1 near the upper opening. The two ends of the hanging strap 11 are sewn and fixed to the outer side of the bag body 1 near the upper opening.

[0069] Optionally, the bag body 1 can also be a cotton or opaque plastic fishing net, with a mesh area of ​​not less than 2 cm². 2 This allows for easy observation of the remaining medication in the infusion bag inside bag 1, while also facilitating the injection of medication into the infusion bag inside bag 1 through the orifice.

[0070] Combination Figure 2 and Figure 3As shown, the squeeze clamp 3 is used to squeeze the bag body 1, forcing the infusion bag inside the bag body 1 to discharge liquid towards the infusion port. The squeeze clamp 3 can be made of rubber. The squeeze clamp 3 is a rectangular strip with a notch, which is specifically composed of three small rectangular strips mechanically connected together. The three rectangular strips are: an L-shaped long strip 31, an L-shaped short strip 32, and a straight strip 33. One end of the L-shaped long strip 31 is connected to one end of the L-shaped short strip 32 through a movable bearing. The L-shaped long strip 31 and the L-shaped short strip 32 can be closed at an angle of 0° to 180°. The end of the L-shaped long strip 31 away from the L-shaped short strip 32 is connected to one end of the straight strip 33 by a screw thread. The L-shaped short strip 32 can be fully opened with the L-shaped long strip 31, and the bag body 1 is locked from this opening. The strip enters between the L-shaped long strip 31, the L-shaped short strip 32, and the straight strip 33. At this point, the length extension directions of the L-shaped long strip 31, the L-shaped short strip 32, and the straight strip 33 are perpendicular to the length extension direction of the bag body 1. Along the length extension direction of the L-shaped long strip 31, the orthographic projection of the straight strip 33 coincides with the orthographic projection of the L-shaped short strip 32. The side of the straight strip 33 near the L-shaped short strip 32 and the side of the L-shaped short strip 32 near the straight strip 33 do not contact each other. The end of the straight strip 33 away from the L-shaped long strip 31 and the end of the L-shaped short strip 32 away from the L-shaped long strip 31 are closed by the CNC component 5. The straight strip 33, the L-shaped short strip 32, and the CNC component 5 form a notch with an opening facing the slide groove 2. The slide groove 2 can be engaged in this notch. Optionally, the compression clamp 3 can be a round-headed rectangular strip.

[0071] Continue to refer to Figure 3 As shown, the chute 2 is a rectangular groove parallel to the length extension direction of the bag body 1, located on the outer front side of the bag body 1. The chute 2 is used to engage the rolling pulley 4. One end of the chute 2 is at the same horizontal level as the upper opening of the bag body 1, and the end of the chute 2 away from the upper opening is at the same horizontal level as the lower opening of the bag body 1. The material of the chute 2 can be metal or rubber. The bottom surface of the chute 2 is fixedly bonded to the outer surface of the bag body 1 along the length extension direction of the bag body 1. The opening of the chute 2 faces the L-shaped short strip 32 and the straight strip 33. The width of the opening of the chute 2 is not less than the width of the pulley 4. The end of the chute 2 near the lower opening does not extend through the length direction. The side wall at this point is used to prevent the pulley 4 from continuing to slide downward and to prevent the pulley 4 from disengaging from the chute 2.

[0072] Continue to refer to Figure 3 As shown, pulley 4 is a rubber pulley. The wheel surface of pulley 4 is engaged in the groove 2 and can roll along the length of the groove 2. Less than 1 / 2 of the area of ​​the hub of pulley 4 is in the rectangular groove of the groove 2. More than 1 / 2 of the area of ​​the hub and the shaft of pulley 4 are located on the housing groove (not marked in the figure) of the CNC component 5. Pulley 4 is controlled by the CNC component 5 and rolls unidirectionally away from the upper opening of the bag body 1.

[0073] Specifically, it is equipped with a rectangular housing, and its shape is rectangular; the CNC component 5 includes: housing 50, switch 51, motor 52, power supply 53, microcontroller 54, pressure sensor 55 and input button 56; housing 50 is a hollow rectangular structure; motor 52, power supply 53, microcontroller 54, pressure sensor 55 and input button 56 are electrically connected, wherein motor 52, power supply 53, microcontroller 54 and pressure sensor 55 are located inside housing 50.

[0074] Optionally, the shape of the CNC component 5 can be a rectangle (such as a cuboid or cube), a triangle, a polygonal prism, or a cylinder.

[0075] Specifically, continue to refer to Figure 2 As shown; the suspension strap 11 is a flexible strip, and its cross-section perpendicular to the length extension direction can be circular, elliptical, triangular or inverted U-shaped; its two ends are sewn and fixed to the outer back side of the bag body 1, and the sewing position is in the middle of the bag body 1 near the upper opening area; the suspension strap 11 is used to suspend the bag body 1 on an infusion stand, bed frame or any hook.

[0076] The sealing zipper 12 is a plastic zipper that extends along the length of the upper opening of the bag body 1. By opening the sealing zipper 12, the upper opening of the bag body 1 can be opened, and the infusion bag can be inserted through the upper opening of the bag body 1. By closing the sealing zipper 12, the infusion bag can be sealed inside the bag body 1.

[0077] Specifically, see Figure 6 As shown, Figure 6 This utility model provides an assembly drawing of a CNC component, a portion of straight strips, and a portion of short strip segments; the housing 50 is a rectangular housing with a pulley groove 501 and several through holes; a rectangular pulley groove 501 is opened on the rear side of the housing 50 near the bag body 1, the width of the pulley groove 501 is equal to the width of the outer wall of the slide groove 2; the recessed direction of the pulley groove 501 faces the inside of the housing 50, and the pulley groove 501 is used to engage the pulley 4; the pulley groove 501 is perpendicular to the left side wall of the straight strip 33 and perpendicular to the L-shaped... On the right side wall of the short strip 32, there is a small round hole 502. The small round hole 502 is used to fix the axle of the pulley 4 so that the pulley 4 can roll in the pulley groove 501. Several shell through holes (not marked in the figure) are opened on the front side of the shell 50 away from the bag body 1. According to the needs of this embodiment, there are three shell through holes in this embodiment, which are used to engage the switch 51 and the input button 56 respectively. There are two input buttons 56, one for low-speed dripping mode and the other for high-speed dripping mode.

[0078] Combination Figure 5 and Figure 7As shown, switch 51 is a rubber button, which can be round, square or rectangular. Switch 51 is connected to a metal conductor inside housing 50. When switch 51 is pressed, the metal conductor closes the circuit and connects power supply 53 to power motor 52, pressure sensor 55, input button 56 and microcontroller 54.

[0079] The motor 52 is used to provide rotational mechanical energy to the pulley 4. Through the motor 52, the pulley 4 can slide in the groove 2 along the upper opening of the bag body 1 towards the lower opening of the bag body 1, and drive the CNC component 5 which is fixedly connected to the pulley 4. The CNC component 5 is also fixedly connected to the extrusion clamp 3. The motor 52 further realizes the sliding of the extrusion clamp 3, the pulley 4 and the CNC component 5 in the groove 2.

[0080] The motor 52 is specifically a geared stepper motor, which is a stepper motor with an integrated reducer, enabling precise control of the rotation angle, so that the pulley 4 can move with high precision at a speed imperceptible to the naked eye; furthermore, the motor 52 can be controlled and adjusted by the microcontroller 54.

[0081] Power supply 53 provides power to motor 52, microcontroller 54, pressure sensor 55, and input button 56. Power supply 53 can be a rechargeable battery, and discharge control is controlled by switch 51. Power supply 53 is a rechargeable battery used to provide electrical energy to the ring circuit inside housing 50; the discharge behavior of power supply 53 is mechanically controlled by switch 51.

[0082] Optionally, the microcontroller 54 can be a single-chip microcontroller STM32.

[0083] The microcontroller 54 can process various input signals, which can be managed through different peripheral interfaces. The microcontroller 54 can optionally use an STM32 microcontroller to receive input signals from the pressure sensor 55 and the input button 56, and generate electrical pulse signals of different frequencies to control the rotational speed of motor 52 and the sliding speed of pulley 4. By reading the signal from the external pressure sensor 55 and adjusting the transmission frequency of the electrical pulses based on the feedback signal from the pressure sensor 55, and further, by using a floating input mode, the high or low transmission frequency can be selected according to the input button 56, controlling the transmission frequency to fluctuate around a high-speed transmission frequency or a low-speed transmission frequency. Therefore, the microcontroller 54 has at least two transmission modes: low-speed and high-speed. By selecting different modes, the microcontroller 54 can control the motor 52 and pulley 4 to operate in either a low-speed dripping mode or a high-speed dripping mode.

[0084] Optionally, the low-speed drip mode can be set to a drip rate of 10-20 drops per minute to suit infant patients, while the high-speed drip mode can be set to a drip rate of 40-60 drops per minute to suit adult patients.

[0085] The pressure sensor 55 is made of piezoelectric materials such as quartz, sodium potassium tartrate, or ammonium dihydrogen phosphate. The pressure sensor 55 includes a pressure-sensing element located between the pulley groove 501 and the pulley 4, with the pulley 4 in contact with the pressure-sensing element. When the pressure-sensing element is subjected to pressure, it generates an electric charge, which can be used to measure dynamic stress. As the sensing pulley 4 rolls toward the lower opening of the bag body 1, the magnitude of the resistance pressure that the pulley 4 needs to overcome in the groove 2 is measured, thus measuring the filling and expansion pressure of the infusion bag inside the bag body 1. The pressure sensor 55 transmits the magnitude of the dynamically expanded pressure sensed in real time to the microcontroller 54. The microcontroller 54 controls the transmission frequency of the electrical pulses based on the magnitude of the input pressure, so that the motor 52 and the pulley 4 rotate uniformly at a selected rotation speed.

[0086] The input button 56 is a mechanical button with a rubber insulating keycap on its surface and an internal power-connected key shaft. The input button 56 can be circular in shape and can be set to two, one for low-speed dripping mode and the other for high-speed dripping mode, which are used to control the microcontroller 54 to start the low-speed dripping mode or the high-speed dripping mode to control the operation of the motor 52 and the pulley 4.

[0087] Optionally, when the microcontroller 54 has two dripping modes (high and low), the input button 56 should be set to three according to the number of dripping speed modes set by the microcontroller 54. The three input buttons 56 are respectively used to control the speed control mode selection of the microcontroller 54. Furthermore, the outer surface of the housing 50 should be provided with four housing through holes, which are used to fit the three input buttons 56 and the switch 51 respectively.

[0088] In this embodiment, the housing 50 of the CNC component 5 is parallel to the slide rail 2. The CNC component 5 is fixedly connected to the straight bar 33 and the L-shaped short bar 32 through the housing 50. The CNC component 5 can control the straight bar 33 and the L-shaped short bar 32 to move in an integrated manner away from the opening on the bag body 1.

[0089] When the amount of medication in the infusion bag inside bag 1 decreases, the pressure sensor 55 detects an instantaneous expansion pressure at that location in bag 1. The microcontroller 54 then controls the motor 52 to rotate, thereby controlling the pulley 4 at different speeds, accelerations, and positions. The rotational step angle of the motor 52 is no greater than 0.9°. Specifically, the number of rotation steps of the motor 52 is proportional to the number of electrical pulses input to the microcontroller 54. By controlling the number of electrical pulses, the angular step of the motor 52 can be precisely controlled. The electrical pulse signal is generated by the microcontroller 54, and the driver of the motor 52 receives the electrical pulse signal. It then provides current to each winding of the motor 52 through an internal switching circuit, converting the electrical pulse signal into the current required by the motor winding. When the current in the stator winding changes, the generated magnetic field attracts or repels the rotor's magnetic poles, causing the rotor to rotate. The rotor can rotate by one step angle after receiving one electrical pulse signal, i.e., rotate by a fixed angle. The rotor can also accumulate rotations based on the number of received pulse signals, allowing for more precise control of the pulley 4.

[0090] The pulley 4 drives the squeezing clamp 3 to slide towards the lower opening of the bag body 1; until the pulley 4 drives the squeezing clamp 3 to slide towards the lower opening of the bag body 1 to the end point, the medicine in the infusion bag inside the bag body 1 is squeezed out. The pressure sensor 55 detects the first zero instantaneous empty bag expansion pressure at the end point of the bag body 1. The microcontroller 54 continues to control the motor 52 to rotate by one step angle. When the pressure sensor 55 detects the second zero instantaneous empty bag expansion pressure, the microcontroller 54 stops the motor 52 from rotating when it receives two consecutive zero instantaneous pressure information.

[0091] The sliding of pulley 4 and squeezing clamp 3 causes the remaining medicine in the infusion bag inside the bag body 1 to be squeezed. Pressure sensor 55 detects a new instantaneous expansion pressure at a new position in the bag body 1. Based on the specific signal of the instantaneous pressure, microcontroller 54 can instantly control the instantaneous speed of pulley 4 and squeezing clamp 3. At this time, pressure sensor 55 can accurately realize that the actual position of pulley 4 is consistent with the expected position.

[0092] The bag body 1 is inserted into the closed loop of the L-shaped long strip 31, the L-shaped short strip 32 and the straight strip 33, and the squeezing clamp 3 is slid along the length extension direction of the bag body 1 toward the lower opening direction of the bag body 1. The ring pressure of the squeezing clamp 3 and the contact surface of the bag body 1 will squeeze the infusion bag inside the bag body 1 to release the liquid.

[0093] In practical use, this embodiment can be used in emergency rescue environments in the field or in routine hospital settings. Specifically, first, place the IV bag into the bag body 1 and close the sealing zipper 12; then, open the squeeze clamp 3 and clamp the bag body 1 between the L-shaped long strip 31, the L-shaped short strip 32, the straight strip 33, and the shell 50, so that the sliding groove 2 on the bag body 1 engages within the notch formed by the straight strip 33, the L-shaped short strip 32, and the CNC component 5; then tighten the screws on the squeeze clamp 3; then turn on the switch 51 and press the input button 56, such as the high-speed drip mode input button 56, to begin normal IV infusion.

[0094] Compared with the prior art, the electrically controlled infusion auxiliary device provided in this embodiment achieves at least the following beneficial effects:

[0095] First, the electrically controlled infusion auxiliary device provided in this embodiment can solve the problem of wasting residual medication in the infusion bag, especially expensive medications; it can control the output of medication at a uniform speed set by the input button 56, and prevent excessive infusion pressure during the infusion process, thus preventing backflow of blood at the infusion site. This embodiment is designed with an adaptive sliding squeezing function for the pulley 4 and the squeezing clamp 3, which can uniformly and completely squeeze out the medication in the infusion bag 1, preventing waste of medication in the infusion bag. Furthermore, after squeezing, the pulley 4 and the squeezing clamp 3 do not loosen, but remain at the lower opening end of the bag 1, preventing a sudden drop in pressure in the infusion bag 1, which could cause a sudden drop in pressure in the infusion tubing and backflow of blood at the infusion site.

[0096] Secondly, the electrically controlled infusion auxiliary device provided in this embodiment overcomes the shortcomings of traditional infusion devices that rely on gravity to deliver medication into the patient's body, avoiding backflow at the infusion site due to insufficient elevation of the infusion bag, and further expanding the adaptability of the infusion bag to more special environments. Traditional infusions rely on gravity to deliver medication from the infusion bag. This embodiment uses a rolling and clamping pressure to squeeze the liquid, clamping the pressure and sealing the infusion bag inside the bag body 1 to prevent the infusion bag from detaching from the bag body 1; at the same time, the infusion bag can be placed low, or even moved by hand, increasing the mobility of the infusion device. For example, in environments where outdoor medical equipment is scarce, it avoids the need to raise the infusion stand and infusion device in some outdoor locations, making the infusion device adaptable to more extreme environments.

[0097] Third, the electrically controlled infusion aid device provided in this embodiment can simultaneously achieve economical manufacturing and convenient use, providing patients with greater flexibility in use; this embodiment is simple, detachable and reusable, with each component being lightweight and small in size, making it convenient for patients to move and use the toilet, etc., without having to move along with the heavy infusion stand when moving or using the toilet; each part is simply designed, economical in manufacturing cost, and suitable for large-scale and wide-ranging use.

[0098] Example 2

[0099] This embodiment is an extension of embodiment 1, as detailed below: (Refer to...) Figure 8 As shown, Figure 8 This is a schematic diagram of the extrusion clamp provided by this utility model; the L-shaped strip 31 includes a long strip section 312 and a short strip section 311 connected to the long strip section 312, and the long strip section 312 and the short strip section 311 form an L-shaped structure.

[0100] A stud 313 is connected to the side of the long segment 312 away from the short segment 311, and the stud 313 and the short segment 311 are parallel to each other along the length of the long segment 312.

[0101] The L-shaped short strip 32 includes a long segment 322 and a short segment 321 connected to the long segment 322. The short segment 321 is located on the side of the long segment 322 away from the straight strip 33. The long segment 322 and the short segment 321 form a short L-shaped structure.

[0102] The straight bar 33 is threadedly connected to the stud 313 on the side away from the short bar long section 322. The long bar short section 311 and the short bar short section 321 are connected by a movable bearing. The straight bar 33 is fixedly connected to the housing 50 on the side closer to the short bar long section 322 and the side closer to the straight bar 33 on the side closer to the short bar long section 322.

[0103] Specifically, see [link to relevant documentation] Figure 8 As shown, the L-shaped strip 31 is laid horizontally and includes: a short section 311, a long section 312, and a stud 313. The two ends of the short section 311 and the long section 312 are vertically connected, forming an L-shaped structure. The upper surfaces of the short section 311 and the long section 312 away from the ground are on the same horizontal line. The length of the short section 311 is the same as the length of the short section 311.

[0104] The long strip short segment 311 has a long strip opening (not marked in the figure) that is perpendicular to the length extension direction of the long strip short segment 311. The long strip short segment 311 can be connected to the L-shaped short segment 32 through the long strip opening via a movable bearing.

[0105] The length of the long strip 312 is N, which is greater than the maximum width of the bag body 1 after being compressed; a stud 313 is provided at the end of the long strip 312 away from the short strip 311.

[0106] The stud 313 is vertically glued or welded to the long strip 312, and the length direction of the stud 313 is front-to-back, perpendicular to the bag body 1 after being squeezed; the stud 313, the short strip 311 and the long strip 312 form a concave surface with a notch facing the front, which is used to lock the bag body 1.

[0107] The L-shaped short bar 32 is placed horizontally, specifically including: a short section 321 of the short bar and a long section 322 of the short bar. The two end heads of the short section 321 and the long section 322 of the short bar are vertically connected, forming an L-shaped structure.

[0108] Among them, the length of the long section 322 of the short bar is M, and M is greater than the maximum width of the bag body 1 after being squeezed; a stud 313 is provided at the end head of the long section 312 of the long bar away from the short section 311; the front side of the long section 322 of the short bar away from the short section 321 is connected to the rear side of the numerical control component 5; the length of the short section 321 of the short bar is the same as the length of the short section 311 of the long bar. A short bar opening (not marked in the figure) perpendicular to the length extension direction of the short section 321 of the short bar is penetrated through the short section 321 of the short bar. Through this short bar opening, the short section 321 of the short bar and the short section 311 of the long bar are connected to the same movable bearing as described above;

[0109] When the L-shaped long bar 31 and the L-shaped short bar 32 are opened at 180° with the movable bearing, the connection relationship from the L-shaped long bar 31 to the L-shaped short bar 32 is successively the stud 313, the long section 312 of the long bar, the short section 311 of the long bar, the short section 321 of the short bar, and the long section 322 of the short bar.

[0110] The straight bar 33 is placed horizontally. The straight bar 33, the long section 322 of the short bar, and the long section 312 of the long bar are on the same imaginary horizontal plane; the length of the straight bar 33 is H, and H is greater than the maximum width of the bag body 1 after being squeezed; the length of the long section 322 of the short bar is M, and H + M is greater than the maximum width of the body 1 after being squeezed; the length of the long section 312 of the long bar is N, and H + M < N; the difference (N - H - M) obtained by subtracting the length H of the straight bar 33 from the length N of the long section 312 of the long bar and then subtracting the length M of the long section 322 of the short bar is the outer width value of the chute body of the chute 2.

[0111] A through hole 331 facing the front and back is penetrated through one end of the straight bar 33. The through hole 331 can be sleeved on the column body of the stud 313 from the end of the stud 313 away from the L-shaped long bar 31, and a fastening nut is screwed on, so that the straight bar 33 can be movably connected to the long section 312 of the long bar; the length extension direction of the straight bar 33 is parallel to the length extension direction of the long section 312 of the long bar.

[0112] Furthermore, the front side of the straight bar 33 away from the long section 312 of the long bar is connected to the rear side of the housing 50 close to the bag body 1. The straight bar 33, the stud 313, the long section 312 of the long bar, the short section 311 of the long bar, the short section 321 of the short bar, and the long section 322 of the short bar form a rectangular closed loop through the rear side of the housing 50, and this rectangular closed loop can be opened from the stud 313 so that the bag body 1 can be snapped in, and the chute 2 on the bag body 1 is stuck in the gap formed by the long section 322 of the short bar, the straight bar 33, and the numerical control component 5.

[0113] Through the above embodiment 2, the L-shaped long strip 31 and L-shaped short strip 32 can be opened horizontally at 180° to facilitate the placement of the bag body 1. At the same time, the L-shaped long strip 31 and L-shaped short strip 32 can be closed tightly, and after closing, they can tightly compress the bag body 1.

[0114] In an optional embodiment, along the length direction of the bag body 1, the thickness of the long strip 312 is greater than the thickness of the short strip 311, the thickness of the short strip 322 is greater than the thickness of the short strip 321, the thickness of the long strip 312 is equal to the thickness of the short strip 322, and the sum of the thicknesses of the short strip 311 and the short strip 321 is equal to the thickness of the long strip 312.

[0115] Specifically, the thickness of the long strip short segment 311 is equal to half the thickness of the long strip long segment 312, and the thickness of the long strip short segment 311 is the same as the thickness of the long strip short segment 311 or the short strip short segment 321; the thickness of the short strip short segment 321 is equal to half the thickness of the short strip long segment 322, and the thickness of the short strip short segment 321 is the same as the thickness of the long strip short segment 311.

[0116] The above scheme enables the clamping force to be uniformly transmitted among the long strip 312, the short strip 322, the long strip 311, and the short strip 321.

[0117] In one alternative embodiment, the length of the long strip 311 is equal to twice the width of the long strip 312 or the short strip 322, and the length of the short strip 321 is equal to twice the width of the short strip 322.

[0118] The above scheme allows the long strip 311 and the short strip 321 to overlap at the same vertical height, thus achieving a tight clamping of the L-shaped short strip 32 and the L-shaped long strip 31, increasing the clamping and extrusion force of the extrusion clamp 3.

[0119] In an alternative embodiment, reference is made to Figure 9 As shown, Figure 9 This is a schematic diagram of the structure of another electrically controlled infusion auxiliary device provided by this utility model; the bag body 1 has an edge, and an anti-snagging ear 13 is provided at the top of the edge. The anti-snagging ear 13 is a semi-circular ring, and a rope 14 is connected between the anti-snagging ear 13 and the L-shaped strip 31.

[0120] Specifically, the anti-loss loop 13 is attached to any position on the outside of the bag body 1. The anti-loss loop 13 is a semi-circular ring, which can be made of the same material as the bag body 1 and is sewn or glued to the outer surface of the bag body 1. A rope 14 is tied through the semi-circular hole of the anti-loss loop 13. The rope 14 can be a circular hanging rope. One end of the hanging rope is connected to the anti-loss loop 13, and the other end of the hanging rope is connected to an L-shaped long strip 31, an L-shaped short strip 32, or a straight strip 33.

[0121] Through the above solution, the anti-loss ear 13 and the hanging rope can prevent the squeezing clip 3 and the CNC component 5 from separating from the bag body 1, thereby preventing the squeezing clip 3 and the CNC component 5 from being lost.

[0122] In an alternative embodiment, reference is made to Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of a CNC component provided by this utility model; the CNC component 5 also includes a charging interface 57, and the housing 50 is provided with an interface through hole (not marked in the figure) on the side away from the bag body 1. The interface through hole penetrates the housing 50 along the direction from the bag body 1 to the housing 50. Along the direction from the bag body 1 to the housing 50, the orthographic projection of the switch through hole and the orthographic projection of the button through hole do not coincide with the orthographic projection of the interface through hole; the charging interface 57 is located in the interface through hole, and the power supply 53 is electrically connected to the charging interface 57.

[0123] Specifically, continue to refer to Figure 4 As shown, the charging interface 57 is located on the front side of the housing 50 away from the bag body 1. It is a universal serial bus socket, which can be a long, flat, wide interface, a circular interface, or a Type-C interface, etc. This design can meet the power supply needs of different interfaces for the power supply 53.

[0124] The various technical features of this utility model are mutually complementary and functionally supportive of each other. In other words, the technical solution is not a "simple superposition" of technical features among multiple prior art documents. Therefore, this utility model does not fall under the category of "simple superposition" in Chapter 4 of Part II of the Patent Examination Guidelines.

[0125] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An electrically controlled infusion auxiliary device, characterized in that, include: Bag body, compression clamp, slide, CNC assembly and pulley; The bag body is a hollow bag body, and the upper and lower ends of the bag body have a connected upper opening and a lower opening, respectively. The upper opening is elongated and the length of the upper opening is the same as the width of the bag body. A sealing zipper is provided at the upper opening, and the diameter of the lower opening is not less than 1cm. The bag body is provided with a hanging strap on the outer back side near the upper opening. The shape of the hanging strap is circular, elliptical, triangular or inverted U-shaped. The bag body is made of transparent material. The extrusion clamp includes an L-shaped long strip, an L-shaped short strip, and a straight strip. One end of the L-shaped long strip is connected to the L-shaped short strip via a movable bearing, and the other end of the L-shaped long strip is threadedly connected to the straight strip. Along the length extension direction of the L-shaped strip, the orthographic projection of the straight strip coincides with the orthographic projection of the L-shaped short strip, and the side of the straight strip near the L-shaped short strip and the side of the L-shaped short strip near the straight strip do not contact each other; The bag body is held between the L-shaped long strip, the L-shaped short strip and the straight strip. A groove is glued to the outer front side of the bag body. The groove extends along the length of the bag body. The groove is a rectangular groove. The opening of the rectangular groove faces away from the bag body. The length of the groove is the same as the length of the bag body. The groove is made of metal or rubber. The CNC assembly includes a housing, a switch, a motor, a power supply, a microcontroller, a pressure sensor, and an input button. The housing has a hollow rectangular structure, and the motor, the power supply, the pressure sensor, and the input button are electrically connected to the microcontroller. The shell has a switch through hole and a button through hole on the side away from the bag body, and the switch through hole and the button through hole penetrate the shell along the direction from the bag body to the shell; Along the direction from the bag body to the housing, the orthographic projection of the switch through hole does not coincide with the orthographic projection of the button through hole. The switch is located in the switch through hole, the input button is located in the button through hole, and the motor, the power supply, the microcontroller, and the pressure sensor are respectively located inside the housing. The straight bar near the L-shaped short bar and the L-shaped short bar near the straight bar are fixedly connected by the housing; The shell has a corresponding slide groove on the side near the bag body, and the slide groove is recessed into the shell; the pulley is located in the slide groove, and the wheel surface of the pulley is engaged in the slide groove; the motor is connected to the pulley, and the pulley drives the shell to move downward along the length of the slide groove. The pressure sensor includes a pressure-sensing element located between the pulley groove and the pulley, with the pulley in contact with the pressure-sensing element.

2. The electrically controlled infusion auxiliary device according to claim 1, characterized in that, The L-shaped strip includes a long strip segment and a short strip segment connected to the long strip segment, and the long strip segment and the short strip segment form an L-shaped structure. A stud is connected to the side of the long strip away from the short strip, and the stud and the short strip are parallel to each other along the length of the long strip; The L-shaped short strip includes a long segment and a short segment connected to the long segment. The short segment is located on the side of the long segment away from the straight strip, and the long segment and the short segment together form an L-shaped structure. The straight bar is threadedly connected to the stud on the side away from the long section of the short bar. The short section of the long bar is connected to the short section of the short bar through the movable bearing. The side of the straight bar near the long section of the short bar and the side of the long section of the short bar near the straight bar are fixedly connected to the housing.

3. The electrically controlled infusion auxiliary device according to claim 2, characterized in that, Along the length of the bag body, the thickness of the long strip is greater than the thickness of the short strip, the thickness of the short strip is greater than the thickness of the short strip, the thickness of the long strip is equal to the thickness of the short strip, and the sum of the thicknesses of the long strip and the short strip is equal to the thickness of the long strip.

4. The electrically controlled infusion auxiliary device according to claim 2, characterized in that, The length of the short segment of the long strip is equal to twice the width of the long segment of the long strip, and the length of the short segment of the short strip is equal to twice the width of the long segment of the long strip.

5. The electrically controlled infusion auxiliary device according to claim 1, characterized in that, The bag has an edge, and an anti-snagging ear is provided at the top of the edge. The anti-snagging ear is a semi-circular ring, and a rope is connected between the anti-snagging ear and the L-shaped strip.

6. The electrically controlled infusion auxiliary device according to claim 1, characterized in that, The CNC component also includes a charging interface. The housing has an interface through hole on the side away from the bag body. The interface through hole penetrates the housing in the direction from the bag body to the housing. In the direction from the bag body to the housing, the orthographic projection of the switch through hole and the orthographic projection of the button through hole do not coincide with the orthographic projection of the interface through hole. The charging interface is located in the interface through hole, and the power supply is electrically connected to the charging interface.

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