Infusion catheter device capable of being quantitatively controlled

Abstract

The invention discloses an infusion catheter device capable of being quantitatively controlled, and relates to the field of medical instruments, according to the scheme, a main control unit is controlled by a controller to drive a transmission control unit to rotate, liquid in an infusion tube is squeezed to flow under the influence of the squeezing speed, and stable control over the infusion speed and accurate quantitative infusion control are achieved; along with gradual deterioration of the infusion tube, the moving speed of the infusion tube can be controlled by controlling the electrifying power of the electromagnet and controlling the adsorption force of the electromagnet, and as the deformation quantity of the infusion tube is increased and the rotating speed of the transmission control unit is increased, automatic displacement and position replacement can be achieved integrally after the preset speed is reached. According to the scheme, autonomous surface displacement of the infusion tube can be achieved, the overall structure is simple, the miniaturization design is greatly achieved, occupied space of other medical instruments is reduced, the mode of rotating speed compensation deformation is adopted, stable and controllable liquid medicine speed control and quantitative transmission are achieved, and the safety is high. And the moving requirements of moving and stopping infusion in the infusion process are integrally met.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to a quantitatively controllable infusion catheter device. Background Art

[0002] Infusion is one of the commonly used treatment methods in modern medicine. It delivers liquid medicine to the vein. When injecting or dripping drugs intravenously, some drugs are sensitive to the dose (such as chemotherapy drugs, anesthetics, insulin, etc.), and the amount of infusion needs to be strictly controlled to avoid side effects or reduced efficacy caused by excessive or insufficient doses. For patients who need to strictly control the balance of fluid in the body (such as patients with heart failure, renal failure or intensive care), quantitative infusion can avoid edema caused by excessive fluid or dehydration caused by insufficient fluid. For some high-concentration or strong-potency drugs (such as hormone drugs, some antibiotics or immunosuppressants), they need to be infused at a very low flow rate, and quantitative infusion can achieve precise delivery of small doses. For patients with severe dehydration, shock or poisoning, precise infusion is required to quickly replenish fluids or dilute toxins, while avoiding excessive infusion causing cardiopulmonary burden.

[0003] From the above, it can be seen that quantitative infusion is widely used, and the use of contactless pumping is one of the more common methods at present. For example, the Chinese patent (Announcement No. CN 106039471 B) proposes a precise quantitative infusion device, which adopts a contact method to avoid deformation and adhesion of traditional extrusion hoses. Since the drug solution needs to flow through the metering component, it is easily affected by the material of the equipment. For example, for drug solutions with corrosive or special chemical components, the internal materials of the device may age or corrode due to long-term contact, resulting in reduced metering accuracy. In addition, the contact structure is prone to contamination or drug compatibility problems due to residual drug solution, which may bring the risk of cross-infection in scenarios with high cleanliness requirements or when multiple patients share equipment. At the same time, the residual drug solution inside the equipment increases the difficulty of cleaning and disinfection, and prolongs the maintenance time of the equipment; Meanwhile, a Chinese patent (publication number CN 108025131 B) proposes an infusion pump, in which the internal pressure of the infusion tube can be increased by "moving the upstream blocking component and the downstream blocking component of the pump mechanism in the pressing direction to completely block the infusion tube. In this way, the decrease in restoring force caused by the deterioration of the infusion tube can be compensated." The structure of this type of quantitative infusion method is still complex, and its miniaturization degree is limited. Moreover, it is squeezed in an area at a high frequency for a long time. With the gradual deterioration, not only the reset speed is reduced, but there is also a risk of damage to the infusion tube. Especially in a low temperature environment, the plastic hardness of the infusion tube is higher, and it is more prone to damage at a certain squeezing frequency. Medical staff often need to replace its position after a period of time, which is inconvenient to use. Based on the fact that the infusion tube has good reset characteristics under a certain frequency of squeezing, this solution proposes a new solution to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the problem of infusion tube deterioration during contactless quantitative infusion and to propose an infusion catheter device that can be quantitatively controlled.

[0005] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: a quantitatively controllable infusion catheter device, comprising an infusion tube and a main frame and a slide seat clamped thereon, a controller is installed on one side of the main frame and the slide seat, a transmission control unit for controlling the flow rate of the liquid medicine in the infusion tube is installed on the main frame, and a displacement control component for switching the operation mode of the transmission control unit is also installed, The transmission control unit includes a rotating assembly for pressing the infusion tube to control the transmission of the liquid therein and a holding assembly for controlling the friction force of the rotating assembly on the infusion tube to switch the size of the friction force. The main frame is equipped with a main control unit for driving the transmission control unit. The main frame is equipped with movement detection modules symmetrically installed at both ends of the infusion tube. The transmission control unit includes a first mode and a second mode. In the first mode, the friction force of the infusion tube fitting the slide is greater than that of the transmission control unit, keeping the infusion tube and the device relatively still. In the second mode, the friction force of the infusion tube fitting the slide is less than that of the transmission control unit, causing relative displacement between the infusion tube and the device.

[0006] As a further description of the above technical solution: the sliding seat includes a seat body and a pressing platform integrally formed with the seat body, the inner side of the pressing platform is provided with a fitting groove for fitting the infusion tube, the upper side of the seat body is symmetrically provided with two sliding grooves, and one side of the sliding groove is provided with an elastic locking tooth.

[0007] As a further description of the above technical solution: the main frame includes a frame body, and guide rails that slide in the sliding grooves are symmetrically arranged on both sides of the frame body, and the surfaces of the guide rails are provided with grooves for positioning elastic teeth. The frame body is also provided with installation grooves, through grooves and interlocking grooves, and the inner wall of the installation groove is clamped with a protective cover.

[0008] As a further description of the above technical solution: the rotating assembly includes a wheel disc, a plurality of support rods are arranged on the lower surface of the wheel disc, a rubber wheel for squeezing an infusion tube is rotatably arranged on the surface of the support rods, a tooth groove is arranged on the inner wall of the wheel disc, a plurality of marking rulers are evenly distributed on the arc-shaped side wall of the wheel disc, and a displacement sensor for measuring the rotation speed of the wheel disc through the marking ruler is arranged on one side of the wheel disc.

[0009] As a further description of the above technical solution: the holding assembly includes a rotating table that penetrates and is fixed on the inner wall of the tooth groove, and a rotating support shaft is rotated through the inner wall of the rotating table. The holding assembly also includes a lifting slide that slides vertically in the groove, and the bottom end of the rotating support shaft is slidably arranged on the inner wall of the lifting slide, and the inner wall of the lifting slide and the bottom end of the rotating support shaft are jointly squeezed with a spring; The arc-shaped side wall of the lifting slide is provided with an annular groove, and the inner wall of the annular groove is provided with a pressing frame for limited rotation, and the four corners of the pressing frame are all slid on the bottom end of the support rod.

[0010] As a further description of the above technical solution: the movement detection module includes a rotation sensor fixed on the frame, the detection end of the rotation sensor is provided with a fitting wheel for pressing the infusion tube, and one side of the rotation sensor is provided with a wire for connecting the control.

[0011] As a further description of the above technical solution: the main control unit includes a driver fixedly connected to the upper surface of the frame, a display is arranged on one side of the driver, and an output end of the driver is provided with an output gear meshing with the tooth groove.

[0012] As a further description of the above technical solution: the displacement control component includes a pin fixed to the bottom end of the lifting slide, a response plate is fixed to the bottom end of the pin, a metal block is fixed to one end of the response plate, a guide column fixed to the lower surface of the frame slides through the surface of the response plate, and the displacement control component also includes an electromagnet installed in the engaging groove, the electromagnet is electrically connected to the controller and is used to cooperate in the adsorption of the metal block.

[0013] As a further description of the above technical solution: the controller is electrically connected to the host computer or directly connected to electricity, and the host computer is loaded with a collaborative control platform.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In this solution, the controller controls the main control unit to drive the transmission control unit to rotate. When the transmission control unit is in the first mode, the pressing frame does not squeeze the rubber wheel, so that the rubber wheel can roll on the surface of the infusion tube without being subjected to friction. The liquid inside the infusion tube flows under the influence of the squeezing speed and automatically resets under the elasticity of the tube after squeezing. At the same time, after a period of use, in order to ensure a constant flow rate, the flow rate of the liquid medicine is detected by a flow meter during use. As the squeezed part of the infusion tube gradually deforms, the main control unit drives the transmission unit to increase its rotation speed, thereby achieving stable control of the infusion speed and precise quantitative infusion control. As the infusion tube gradually deteriorates, the power of the electromagnet is controlled to make its adsorption force on the metal block different. During the adsorption process of the metal block, the adsorption force is converted into the pressure of the rubber wheel with the holding component. The greater the pressure, the greater the friction between the pressing frame of the holding component and the rubber wheel. The greater the friction between the rubber wheel and the pressing frame, the rubber wheel fits the surface of the infusion tube. At this time, it is in the second mode. The friction force of the rubber wheel on the infusion tube is greater than the friction force of the infusion tube in the fitting groove, causing the infusion tube to move relative to the device. The movement speed can be controlled by controlling the adsorption force of the electromagnet. As the deformation of the infusion tube increases, the rotation speed of the transmission control unit increases. When the preset speed is reached, the whole can achieve automatic displacement and change of position.

[0015] At the same time, during the movement, slow movement is achieved by the difference between the friction force of the rubber wheel on the infusion tube and the friction force of the fitting groove on the infusion tube, and the rotation speed is controlled during the movement to achieve continuous control of the infusion during the movement. When the movement of the infusion is stopped, the electromagnet is started at maximum power, and the rubber wheel is completely pressed and held in a locked state by the maximum pressure of the pressing frame. At this time, after the rubber wheel contacts the infusion tube, due to the large friction force of the rubber wheel, the rubber wheel will not slide when contacting the infusion tube, so that the infusion tube slides directly without any liquid medicine being transmitted inside.

[0016] This solution can achieve autonomous displacement of the infusion tube surface, eliminating the need for a reset structure after the infusion tube deteriorates. The overall structure is simple, greatly realizing a miniaturized design and reducing the space occupied by other medical devices. It also adopts a rotation speed compensation deformation method to achieve stable and controllable liquid medicine speed control and quantitative transmission, which overall meets the movement requirements of moving and stopping the infusion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the system architecture of the present invention; Figure 2 It is a three-dimensional schematic diagram of the present invention; Figure 3 A three-dimensional schematic diagram of another viewing angle of the present invention; Figure 4 It is an explosion schematic diagram of the present invention; Figure 5 It is an explosion schematic diagram of another viewing angle of the present invention; Figure 6 This is a schematic diagram of the layout of the electrical connection pins after the controller of the present invention is disassembled; Figure 7 A schematic diagram of a cross section of the present invention; Figure 8 It is a partial three-dimensional cross-sectional schematic diagram of the present invention; Fig. 9 This is a schematic diagram of the overall structure of the present invention after the main frame, slide seat and controller are disassembled; Fig.10It is a schematic diagram of the separation state of the slide seat sliding out of the main frame of the present invention; Fig.11 It is a cross-sectional schematic diagram of the main frame and the slide seat in the clamping state of the present invention; Fig.12 It is a three-dimensional schematic diagram of a transmission control unit of the present invention; Fig.13 It is an exploded schematic diagram of the transmission control unit of the present invention; Fig.14 It is a three-dimensional cross-sectional schematic diagram of the motion detection module of the present invention.

[0018] Legend: 10. Main frame; 11. Frame body; 12. Guide rail; 13. Card slot; 14. Through slot; 15. Fitting slot; 16. Installation slot; 20. Sliding seat; 21. Seat body; 22. Sliding groove; 23. Elastic clamping teeth; 24. Pressing platform; 25. Laminating groove; 30. Main control unit; 31. Driver; 32. Output gear; 33. Display; 40. Transmission control unit; 41. Rotation assembly; 411. Wheel; 412. Tooth groove; 413. Support rod; 414. Marking ruler; 415. Rubber wheel; 416. Displacement sensor; 42. Pressing assembly; 421. Lifting slide; 422. Rotating support shaft; 423. Rotating table; 424. Pressing frame; 425. Spring; 426. Annular groove; 50. displacement control assembly; 51. response plate; 52. ejector pin; 53. guide post; 54. metal block; 55. electromagnet; 60. Mobile detection module; 61. Rotation sensor; 62. Lamination wheel; 63. Wire; 70. Controller; 80. Protective cover; 90. Infusion tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] like Figure 1 - Fig.14As shown, the present invention provides: a quantitatively controllable infusion catheter device, comprising an infusion tube 90 and a main frame 10 and a slide seat 20 clamped thereon, a controller 70 is installed on one side of the main frame 10 and the slide seat 20, a transmission control unit 40 for controlling the flow rate of the liquid medicine in the infusion tube 90 is installed on the main frame 10, and a displacement control component 50 for switching the operation mode of the transmission control unit 40 is also installed, The transmission control unit 40 includes a rotating assembly 41 for pressing the infusion tube 90 to control the transmission of the liquid therein and a pressing assembly 42 for controlling the friction force of the rotating assembly 41 on the infusion tube 90 to switch the friction force. The main frame 10 is equipped with a main control unit 30 for driving the transmission control unit 40. The main frame 10 is symmetrically equipped with movement detection modules 60 at both ends of the infusion tube 90. The transmission control unit 40 controls the flow of liquid in the infusion tube 90 by rotating, and can also control the displacement of the infusion tube 90 with the change of friction force.

[0021] The transmission control unit 40 includes a first mode and a second mode. In the first mode, the friction force between the infusion tube 90 and the slide seat 20 is greater than the friction force between the infusion tube 90 and the transmission control unit 40, keeping the infusion tube 90 and the device relatively still. In the second mode, the friction force between the infusion tube 90 and the slide seat 20 is less than the friction force between the infusion tube 90 and the transmission control unit 40, causing relative displacement between the infusion tube 90 and the device.

[0022] The automatic switching between the first mode and the second mode greatly reduces the need for manual supervision.

[0023] Specifically, Fig.10 As shown: the slide 20 includes a seat body 21 and a pressing platform 24 integrally formed with the seat body 21, the inner side of the pressing platform 24 is provided with a fitting groove 25 for fitting the infusion tube 90, the upper side of the seat body 21 is symmetrically provided with two sliding grooves 22, and one side of the sliding groove 22 is provided with an elastic locking tooth 23.

[0024] The fitting groove 25 can maintain a better fit with the infusion tube 90. The friction force of the fitting groove 25 on the infusion tube 90 is relative to the friction force between the rubber wheel 415 and it, and its rubber material has a higher friction coefficient. When the rubber wheel 415 fits the infusion tube 90 and does not rotate, the infusion tube 90 will be subjected to a greater friction force with the rubber wheel 415 and thus be displaced.

[0025] The main frame 10 includes a frame body 11, and guide rails 12 that slide in the sliding groove 22 are symmetrically arranged on both sides of the frame body 11. The surface of the guide rail 12 is provided with a slot 13 for positioning the elastic locking tooth 23. The frame body 11 is also provided with an installation slot 16, a through slot 14 and an interlocking slot 15, and the inner wall of the installation slot 16 is clamped with a protective cover 80.

[0026] The guide rails 12 provided on both sides of the frame 11 can meet the sliding of the slide groove 22 of the slide seat 20, wherein one side of the slide groove 22 of the slide seat 20 is provided with an elastic latch 23, and the elastic latch 23 can be limited at the end position of the guide rail 12 to achieve the clamping and fixing between the main frame 10 and the slide seat 20; At the same time, the mounting groove 16 on the frame 11 can be conveniently connected with the protective cover 80. There are actually some strip-shaped protrusions in the mounting groove 16. When the protective cover 80 is inserted, the mounting groove 16 can be installed with the protective cover 80, and the protective cover 80 can protect the bottom. Specifically, Fig.13 As shown: the rotating assembly 41 includes a wheel 411, a plurality of struts 413 are arranged on the lower surface of the wheel 411, a rubber wheel 415 for squeezing the infusion tube 90 is rotatably arranged on the surface of the strut 413, a tooth groove 412 is provided on the inner wall of the wheel 411, a plurality of marking scales 414 are evenly distributed on the arc-shaped side wall of the wheel 411, and a displacement sensor 416 for measuring the rotation speed of the wheel 411 through the marking scale 414 is arranged on one side of the wheel 411.

[0027] The wheel disc 411 can rotate by meshing with the output gear 32 through the tooth groove 412, and the support rod 413 integrally formed on the surface can satisfy the rotation of the rubber wheel 415. The marking ruler 414 arranged on the arc-shaped side wall of the wheel disc 411 can assist in detecting the displacement sensor 416 as it rotates. The rotation speed can be understood according to the moving speed of the marking ruler 414. The marking ruler 414 is not arranged at the position of the support rod 413, and the calibration can be entered when the marking ruler 414 is not detected. During each calibration process, the displacement sensor 416 does not detect the marking ruler 414 and determines that the position is the measurement position of the rubber wheel 415 .

[0028] Specifically, Fig.13 As shown: the pressing assembly 42 includes a rotating table 423 that penetrates and is fixed on the inner wall of the tooth groove 412, and a rotating support shaft 422 is rotatably penetrated through the inner wall of the rotating table 423. The pressing assembly 42 also includes a lifting slide 421 that slides vertically in the through groove 14, and the bottom end of the rotating support shaft 422 is slidably arranged on the inner wall of the lifting slide 421, and the inner wall of the lifting slide 421 and the bottom end of the rotating support shaft 422 are jointly squeezed with a spring 425; By setting a rotating table 423, the rotating table 423 is fixed in the wheel disk 411 and rotates on the surface of the rotating support shaft 422. At the same time, the rotating support shaft 422 is inserted into the frame 11 under the elastic action to maintain positioning. The lifting slide 421 can always be located in the groove 14 under the action of the internal spring 425, which is convenient for overall assembly, and can maintain the overall structural stability and provide a reset force to the displacement control component 50. The overall structure is compact and the volume is small.

[0029] An annular groove 426 is formed on the arc-shaped side wall of the lifting slide 421 . A pressing frame 424 is provided on the inner wall of the annular groove 426 for limited rotation. The four corners of the pressing frame 424 are all slid on the bottom end of the support rod 413 .

[0030] The annular groove 426 can satisfy the pressing frame 424 to slide therein as the wheel plate 411 rotates, and the annular groove 426 can provide a squeezing force to the pressing frame 424 during the vertical movement of the lifting slide 421 .

[0031] Specifically, Fig. 9 As shown: the movement detection module 60 includes a rotation sensor 61 fixed on the frame 11, the detection end of the rotation sensor 61 is provided with a fitting wheel 62 for pressing the infusion tube 90, and one side of the rotation sensor 61 is provided with a wire 63 for connecting the control.

[0032] The rotation sensor 61 is as follows Fig.14 From the cross-sectional view shown, it can be seen that the principle is consistent with the displacement sensor 416 cooperating with the marking ruler 414. When the slide 20 and the frame 11 clamp the infusion tube 90 together, the infusion tube 90 is attached to the fitting wheel 62 at the bottom end of the rotation sensor 61, and the fitting wheel 62 rotates as the infusion tube 90 moves, thereby realizing accurate detection of the displacement of the infusion tube 90.

[0033] Specifically, Figure 8 As shown, the main control unit 30 includes a driver 31 fixedly connected to the upper surface of the frame 11 , a display 33 is provided on one side of the driver 31 , and an output gear 32 meshing with the tooth groove 412 is provided at the output end of the driver 31 .

[0034] By setting the driver 31 , the driver 31 can accurately control the rotation of the output gear 32 . Meanwhile, the display 33 is arranged at one side of the driver 31 , and can display relevant parameters after being sorted by the controller 70 .

[0035] Specifically, Figure 8 As shown: the displacement control component 50 includes a pin 52 fixed to the bottom end of the lifting slide 421, a response plate 51 is fixed to the bottom end of the pin 52, a metal block 54 is fixed to one end of the response plate 51, a guide column 53 fixed to the lower surface of the frame 11 slides through the surface of the response plate 51, and the displacement control component 50 also includes an electromagnet 55 installed in the engaging groove 15, the electromagnet 55 is electrically connected to the controller 70 and is used to cooperate with the adsorption of the metal block 54.

[0036] By setting up the metal block 54, the metal block 54 can respond to the action of the electromagnet 55. The cooperation of the response plate 51 and the guide column 53 can provide a guide for the movement of the metal block 54 to avoid misalignment. At the same time, the guide plate lifts the lifting slide 421 through the ejector pin 52. The reaction force of the spring 425 in the lifting slide 421 can keep the ejector pin 52 and the lifting slide 421 reset after losing the adsorption force of the electromagnet 55.

[0037] Specifically, Figure 1 As shown: the controller 70 is electrically connected to the host computer or directly connected to electricity, and the host computer is loaded with a collaborative control platform.

[0038] The collaborative control platform installed on the host computer is a software developed specifically for this device. It is a platform that assists other medical devices in interactive control with this device.

[0039] The controller 70 of the device is directly connected to the power supply through USB or inserted into the host computer loaded with the collaborative control platform. When the host computer is powered on, it can obtain the best infusion speed and dosage based on factors such as human heart rate and body temperature. When it is directly connected to the power supply, it is generally suitable for ordinary patients. The medical staff can directly operate the buttons on the surface of the controller 70 and adjust the infusion speed and infusion volume in combination with the display 33. When the infusion is completed, a buzzer set on one side will be prompted; As can be seen from the figure, the controller 70 is directly connected to the driver 31 and the electromagnet 55 and controls the power supply thereof, and obtains data from the displacement sensor 416 and the rotation sensor 61 in real time. The displacement sensor 416 detects the rotation speed of the wheel 411 in real time, and then compares it with the power of the driver 31 to avoid failure. If the driver 31 fails, the rotation speed of the continuous power output wheel 411 does not match the power, and it is determined to be a failure. At the same time, the rotation sensor 61 can detect the displacement distance of the infusion tube 90. Furthermore, if Figure 3 As shown, a socket is provided at the bottom of the controller 70, which can be connected to a flow sensor when higher accuracy is required. The flow sensor is clamped on the surface of the infusion tube 90, and can then detect the amount of medicine transferred by the infusion tube 90 and feed it back to the controller 70. Since the flow sensor is a prior art, the specific connection relationship is not directly reflected in the solution.

[0040] When the present solution is in use, by pushing the slide 20, the elastic latch teeth 23 of the slide 20 bend and disengage from the end of the guide rail 12, so that the slide 20 slides on the guide rails 12 on both sides of the frame 11, and as it moves, the elastic latch teeth 23 snap into the slots 13 on the surface of the guide rails 12 to limit the sliding distance. When necessary, the slide 20 and the main frame 10 can be separated by continuing to apply force. When the slide 20 slides out, the infusion tube 90 can be placed between the slide 20 and the main frame 10, and then the slide 20 is pushed to reset, and the elastic latch teeth 23 of the slide 20 are disengaged from the slots 13, and finally snap into the end limit of the guide rail 12 to achieve the overall installation. At the same time, as the slide 20 is completely reset, the infusion tube 90 is squeezed by the rubber wheel 415 of the infusion rotating assembly 41 and enters the fitting groove 25. The medical staff directly operates the controller 70 or sends the parameters of the infusion speed and the infusion volume to the controller 70 through the host computer. The controller 70 controls the driver 31 to drive the driving gear to rotate. The driving gear meshes in the tooth groove 412 of the wheel plate 411. The wheel plate 411 drives the rotating platform 423 to rotate on the top of the rotating support shaft 422. When the wheel plate 411 rotates, it rolls with the rubber wheel 415 in contact with the surface of the infusion tube 90. At this time, the rubber wheel 415 rotates on the surface of the support rod 413. The rotating support shaft 422 is squeezed in the rotating platform 423, and the top end of the rotating support shaft 422 is limited and rotated on the frame 11. The bottom end of the rotating support shaft 422 is always in a lifting state under the action of the spring 425. At the same time, the reaction force of the spring 425 squeezes the lifting slide 421 into the through groove 14. When the electromagnet 55 is started, the metal block 54 is pulled to move the response plate 51, and the response plate 51 slides on the surface of the guide column 53 and compresses the slide spring 425 through the ejector pin 52. When the sleeve moves, pressure is applied to the pressure frame 424 through the annular groove 426 on the surface, so that the pressure frame 424 slides on the surface of the support rod 413 and fits on one side of the rubber wheel 415, so that the rotation of the rubber wheel 415 is blocked, so that friction exists between the rubber wheel 415 and the infusion tube 90.

[0041] Based on the above, the present solution provides an infusion catheter device that can be quantitatively controlled, which can realize rapid disassembly and assembly on the infusion tube 90, is easy to use, and can avoid excessive deterioration of an area of ​​the infusion tube 90. There is no need for medical staff to frequently change positions, which meets the needs of use and the normal frequency of replacement of the infusion tube 90 of several days.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quantitatively controllable infusion catheter device, comprising an infusion tube (90) and a main frame (10) and a slide seat (20) clamped thereon, wherein a controller (70) is mounted on one side of the main frame (10) and the slide seat (20), characterized in that: The main frame (10) is provided with a transmission control unit (40) for controlling the flow rate in the infusion tube (90), and is also provided with a displacement control component (50) for switching the operation mode of the transmission control unit (40). The transmission control unit (40) comprises a rotating assembly (41) for pressing the infusion tube (90) to control the transmission of liquid therein, and a holding assembly (42) for controlling the rotation assembly (41) to switch the friction force of the infusion tube (90). A main control unit (30) for driving the transmission control unit (40) is mounted on the main frame (10). Movement detection modules (60) are symmetrically mounted on both ends of the infusion tube (90) on the main frame (10). The transmission control unit (40) comprises a first mode and a second mode. In the first mode, the friction force of the infusion tube (90) against the sliding seat (20) is greater than the friction force of the infusion tube (90) against the transmission control unit (40), thereby keeping the infusion tube (90) and the device relatively stationary. In the second mode, the friction force of the infusion tube (90) against the sliding seat (20) is less than the friction force of the infusion tube (40), thereby causing relative displacement between the infusion tube (90) and the device.

2. The quantitatively controllable infusion catheter device according to claim 1, characterized in that: The slide seat (20) comprises a seat body (21) and a pressing platform (24) integrally formed with the seat body (21); a fitting groove (25) for fitting the infusion tube (90) is provided on the inner side of the pressing platform (24); two sliding grooves (22) are symmetrically provided on the upper side of the seat body (21), and elastic locking teeth (23) are provided on one side of the sliding grooves (22).

3. The quantitatively controllable infusion catheter device according to claim 2, characterized in that: The main frame (10) comprises a frame body (11), and guide rails (12) are symmetrically arranged on both sides of the frame body (11) for sliding in matching slide grooves (22), and a groove (13) for positioning elastic latch teeth (23) is provided on the surface of the guide rail (12). The frame body (11) is also provided with an installation groove (16), a through groove (14) and an engaging groove (15), and a protective cover (80) is clamped on the inner wall of the installation groove (16).

4. The quantitatively controllable infusion catheter device according to claim 3, characterized in that: The rotating assembly (41) comprises a wheel disc (411), a plurality of support rods (413) being arranged on the lower surface of the wheel disc (411), a rubber wheel (415) for squeezing an infusion tube (90) being rotatably arranged on the surface of the support rod (413), a tooth groove (412) being provided on the inner wall of the wheel disc (411), a plurality of marking scales (414) being evenly distributed on the arc-shaped side wall of the wheel disc (411), and a displacement sensor (416) for measuring the rotation speed of the wheel disc (411) by means of the marking scale (414) being arranged on one side of the wheel disc (411).

5. The quantitatively controllable infusion catheter device according to claim 4, characterized in that: The holding assembly (42) comprises a rotating platform (423) penetrating and fixed on the inner wall of the tooth groove (412), a rotating support shaft (422) penetrating and rotating through the inner wall of the rotating platform (423), and the holding assembly (42) further comprises a lifting slide (421) located in the through groove (14) and vertically sliding, the bottom end of the rotating support shaft (422) is slidably arranged on the inner wall of the lifting slide (421), and the inner wall of the lifting slide (421) and the bottom end of the rotating support shaft (422) are jointly squeezed with a spring (425); The arc-shaped side wall of the lifting slide (421) is provided with an annular groove (426), and the inner wall of the annular groove (426) is provided with a pressing frame (424) for limited rotation, and the four corners of the pressing frame (424) are all slid on the bottom end of the support rod (413).

6. The quantitatively controllable infusion catheter device according to claim 3, characterized in that: The movement detection module (60) comprises a rotation sensor (61) fixed on a frame (11); a detection end of the rotation sensor (61) is provided with a fitting wheel (62) for pressing and holding the infusion tube (90); and a wire (63) for connecting a control is provided on one side of the rotation sensor (61).

7. The quantitatively controllable infusion catheter device according to claim 4, characterized in that: The main control unit (30) comprises a driver (31) fixedly connected to the upper surface of the frame (11), a display (33) being provided on one side of the driver (31), and an output gear (32) meshing with a tooth groove (412) being provided at an output end of the driver (31).

8. The quantitatively controllable infusion catheter device according to claim 5, characterized in that: The displacement control component (50) includes a pin (52) fixed to the bottom end of the lifting slide (421), a response plate (51) fixed to the bottom end of the pin (52), a metal block (54) fixed to one end of the response plate (51), a guide column (53) fixed to the lower surface of the frame (11) slidingly passing through the surface of the response plate (51), and the displacement control component (50) also includes an electromagnet (55) installed in the engaging groove (15), the electromagnet (55) being electrically connected to the controller (70) and used to cooperate in adsorbing the metal block (54).

9. The quantitatively controllable infusion catheter device according to claim 1, characterized in that: The controller (70) is electrically connected to a host computer or directly connected to electricity, and the host computer is loaded with a collaborative control platform.

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