Intelligent infusion controller

Abstract

The invention relates to the field of infusion control, in particular to an intelligent infusion controller. The device comprises a shell, a clamping mechanism, a locking assembly, an infrared liquid level detector and a central controller. A clamping seat is arranged on the inner side of the shell, a mounting cavity is formed in the inner side of the clamping seat, and the clamping seat is provided with a first pipe groove, a kettle groove and a second pipe groove which are sequentially communicated from top to bottom; the clamping mechanism comprises two first clamping assemblies symmetrically distributed at the first pipe groove and two second clamping assemblies symmetrically distributed at the pot groove. The locking assembly comprises an iron block arranged on the first movable plate and an electromagnet arranged on the first fixed plate. The central controller is in communication connection with the infrared liquid level detector, when the liquid level detected by the infrared liquid level detector is lower than a preset liquid level value, the central controller controls the electromagnet to be powered on, the electromagnet attracts the iron block, and the two first clamping tables extrude the dropper from the two sides to be in a closed state. When the liquid level in the drip cup is too low, the drip tube can be automatically locked, and the blood return condition is prevented.

Description

Technical Field

[0001] The present invention relates to the field of infusion control, and particularly to an intelligent infusion controller. Background Art

[0002] During the clinical treatment process, many patients often need infusion treatment. Therefore, a large number of infusion sets are required in clinical treatment. However, after the liquid in the infusion set has been completely dripped, if the infusion set is not turned off in time, blood reflux is likely to occur.

[0003] Chinese Patent Publication No. CN114247006B discloses an infusion set with automatic liquid stop and blood reflux prevention, including a liquid seal pool device, a bottle stopper puncture device, a ventilation valve, a drip chamber, a spiral connector, a venous infusion needle, a flow regulator, and an infusion hose. The liquid seal pool cavity of the liquid seal pool device can automatically store liquid medicine. By effectively utilizing the static pressure and sealing effect of the liquid medicine in the liquid seal pool cavity, it can prevent air from entering the human vein after the liquid medicine in the infusion bottle has been used up, that is, when the static pressure of the liquid in the infusion bottle is zero, the atmospheric pressure, the static pressure of the liquid in the liquid seal pool cavity, and the human vein pressure in the infusion hose wall are maintained in a constant pressure state, so that the infusion set realizes the functions of automatic liquid stop and blood reflux prevention.

[0004] However, the above infusion set is an improvement on the existing conventional infusion set, and for the currently widely used conventional infusion sets, it does not have the function of preventing blood reflux. Summary of the Invention

[0005] The object of the present invention is to address the problems in the background art and propose an intelligent infusion controller that can automatically lock the dropper when the liquid level in the drip chamber is too low to prevent blood reflux.

[0006] Technical solution of the present invention: An intelligent infusion controller includes a housing, a clamping mechanism, a locking component, an infrared liquid level detector and a central controller; a card seat is arranged inside the housing, and an installation cavity is formed inside the card seat. The card seat has a first pipe groove, a kettle groove and a second pipe groove that are sequentially communicated from top to bottom. A plurality of through holes are arranged side by side at the bottom of the kettle groove along the vertical direction; the clamping mechanism includes two groups of first clamping components symmetrically distributed at the first pipe groove and two groups of second clamping components symmetrically distributed at the kettle groove. The first clamping component includes a first fixing plate arranged on the inner wall of the card seat, a sliding rod slidably arranged on the first fixing plate, a first clamping table and a first moving plate respectively connected to both ends of the sliding rod, and a first spring sleeved on the outer periphery of the sliding rod and connected to the first clamping table and the first fixing plate at both ends; two groups of locking components are symmetrically arranged, including an iron block arranged on the first moving plate and an electromagnet arranged on the first fixing plate; the infrared liquid level detector is arranged in the installation cavity of the card seat, and the detection direction faces the through hole; the central controller is communicatively connected with the infrared liquid level detector. When the liquid level detected by the infrared liquid level detector is lower than the preset liquid level value, the central controller controls the electromagnet to be energized, the electromagnet attracts the iron block, and the two first clamping tables squeeze the dropper from both sides to a closed state.

[0007] Preferably, a speaker is arranged on the card seat. There is a detection port at the bottom of the kettle groove. The detection port is located above the through hole. An infrared detector and a timing module are arranged in the installation cavity of the card seat. The infrared detector faces the detection port. The infrared detector, the central controller and the timing module are sequentially communicatively connected. The timing module is used to count the dripping time interval t between two adjacent liquid drops. The central controller calculates the liquid drop speed v = 60 / t, with the unit of drops per minute. When the drop speed exceeds the preset drop speed range, the central controller controls the speaker to give an alarm.

[0008] Preferably, the second clamping component includes a second fixing plate arranged on the inner wall of the card seat, a sliding cylinder slidably arranged on the second fixing plate, a second clamping table and a second moving plate respectively connected to both ends of the sliding cylinder, and a second spring sleeved on the outer peripheral side of the sliding cylinder and connected to the second clamping table and the second fixing plate at both ends.

[0009] Preferably, the top surface of the first clamping table is a first inclined surface that gradually inclines towards the bottom of the first pipe groove, and the top surface of the second clamping table is a second inclined surface that gradually inclines towards the bottom of the kettle groove.

[0010] Preferably, the inside of the second clamping table is hollow and filled with a heat-conducting liquid. The second clamping table has an opening communicating with the sliding cylinder. Electric heating wires are arranged inside the second clamping table and the sliding cylinder. The end of the electric heating wire has a first conductive joint arranged at the outer end of the sliding cylinder. A battery and a conductive component are arranged in the installation cavity of the card seat. The battery is electrically connected to the conductive component. The conductive component includes a second conductive joint facing the first conductive joint.

[0011] Preferably, the conductive component further includes a fixing bracket disposed on the inner wall of the card seat, two connecting rods that are parallelly distributed and one end of each is rotatably disposed on the fixing bracket, a swing rod rotatably connected to the other ends of the two connecting rods, and an elastic component that elastically tensions one of the connecting rods. The swing rod is parallel to the fixing bracket, and the second conductive joint is disposed on the swing rod.

[0012] Preferably, the elastic component includes a connecting platform disposed on one of the connecting rods, an arc rod and an arc cylinder distributed around the rotation central axis of the connecting rod on the fixing bracket, and a third spring sleeved on the outer periphery of the arc rod and connected to the connecting platform and the arc cylinder at both ends respectively. The arc rod is slidably disposed on the arc cylinder, the outer end of the arc rod is connected to the connecting platform, and the outer end of the arc cylinder is connected to the fixing bracket.

[0013] Preferably, a push rod is rotatably disposed in the installation cavity of the card seat. One end of the push rod is located on the side of the first moving plate facing the first fixing plate, and the other end abuts against one of the connecting rods. When the electromagnet is energized, the first moving plate pushes one end of the push rod, and the other end of the push rod pushes the connecting rod outwards, and the second conductive joint disengages from the first conductive joint.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention can be applied to the drip monitoring and alarm of a large number of existing conventional infusion sets. It can automatically lock the drip tube when the liquid level in the drip chamber is too low to prevent blood backflow. When the infrared liquid level detector detects that the liquid level is lower than the preset liquid level value, the electromagnet is energized, and the iron block is attracted to drive the first moving plate to move. The drip tube is clamped to the locked state by the two first clamping platforms, and the drip tube is not ventilated, so that blood backflow will not occur to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 is a schematic diagram of the distribution of the first clamping platform and the second clamping platform on the card seat; Figure 3 is a partial structural cross-sectional view of an embodiment of the present invention; Figure 4 is Figure 3 the enlarged view of the structure at A in Figure 5 is a partial structural cross-sectional view of energizing or de-energizing the electric heating wire; Figure 6 is Figure 5 the enlarged view of the structure at B in

[0016] Reference numerals: 1, rear shell; 2, front shell; 3, card seat; 31, first tube slot; 32, drip chamber; 321, through hole; 33, second tube slot; 34, speaker; 35, detection port; 4, first clamping platform; 5, second clamping platform; 6, sliding rod; 61, first spring; 7, first moving plate; 8, first fixing plate; 9, iron block; 10, electromagnet; 11, second spring; 12, sliding cylinder; 13, second moving plate; 14, second fixing plate; 15, electric heating wire; 16, first conductive joint; 17, second conductive joint; 18, swing rod; 19, connecting rod; 20, fixing bracket; 21, connecting platform; 22, arc rod; 23, arc cylinder; 24, third spring; 25, push rod. Detailed implementation manners

[0017] Embodiment 1, as Figures 1 - 6 shown, an intelligent infusion controller proposed in this embodiment includes a housing, a clamping mechanism, a locking assembly, an infrared liquid level detector, and a central controller.

[0018] A card seat 3 is arranged inside the housing. An installation cavity is provided inside the card seat 3. The card seat 3 has a first tube slot 31, a drip chamber 32, and a second tube slot 33 that are sequentially communicated from top to bottom. The first tube slot 31 and the second tube slot 33 are used to clamp the dropper (hose) of an existing conventional infusion set, and the drip chamber 32 is used to clamp the drip chamber of the infusion set. A plurality of through holes 321 are arranged side by side along the vertical direction at the bottom of the drip chamber 32. The housing includes a rear shell 1 and a front shell 2 rotatably arranged on the rear shell 1. After the dropper and the drip chamber of the infusion set are clamped in place, the front shell 2 is rotated and buckled on the rear shell 1. The front shell 2 and the rear shell 1 are snap-connected. Semi-circular channels are provided at both the top and bottom ends of the front shell 2 and the rear shell 1 for the dropper to pass through, and the dropper will not be blocked when they are closed.

[0019] The clamping mechanism includes two groups of first clamping components symmetrically distributed at the first tube slot 31 and two groups of second clamping components symmetrically distributed at the drip chamber 32. The first clamping component includes a first fixing plate 8 arranged on the inner wall of the card seat 3, a sliding rod 6 slidably arranged on the first fixing plate 8, a first clamping platform 4 and a first moving plate 7 respectively connected to both ends of the sliding rod 6, and a first spring 61 sleeved on the outer periphery of the sliding rod 6 and connected to the first clamping platform 4 and the first fixing plate 8 at both ends. After the dropper is clamped into the first tube slot 31, continue to push it down until it is clamped between the two first clamping platforms 4. The first spring 61 is compressed, and the dropper is clamped, but the liquid dripping remains unobstructed.

[0020] The second clamping assembly includes a second fixed plate 14 disposed on the inner wall of the card seat 3, a sliding cylinder 12 slidably disposed on the second fixed plate 14, a second clamping table 5 and a second moving plate 13 respectively connected to both ends of the sliding cylinder 12, and a second spring 11 sleeved on the outer peripheral side of the sliding cylinder 12 and connected to the second clamping table 5 and the second fixed plate 14 at both ends. After the drip kettle is inserted into the kettle groove 32, the two second clamping tables 5 can be pushed outwards, so that the second spring 11 is compressed, and the two second clamping tables 5 clamp the drip kettle from both sides, and the position of the drip kettle is stable. When detecting the liquid level in the drip kettle by using the infrared liquid detector, more accurate detection data can be obtained.

[0021] The top surface of the first clamping table 4 is a first inclined surface gradually inclined towards the bottom of the first tube groove 31, and the top surface of the second clamping table 5 is a second inclined surface gradually inclined towards the bottom of the kettle groove 32. By providing the first inclined surface and the second inclined surface, the clamping process of the dropper and the drip kettle can be guided, and the smoothness of clamping the infusion set can be improved.

[0022] Two sets of locking assemblies are symmetrically arranged, including an iron block 9 disposed on the first moving plate 7 and an electromagnet 10 disposed on the first fixed plate 8, and the magnetic attracting end of the electromagnet 10 faces the iron block 9. The two sets of locking assemblies respectively correspond to the two sets of first clamping assemblies.

[0023] The infrared liquid level detector is disposed in the installation cavity of the card seat 3, and the detection direction faces the through hole 321, and the liquid level in the drip kettle is detected through the through hole 321. The specific detection principle is to utilize the different infrared characteristics of different materials. The infrared characteristics of the area with liquid in the lower part and the area without liquid in the upper part of the drip kettle are different, and the liquid level is detected by this principle.

[0024] The central controller is communicatively connected to the infrared liquid level detector. When the liquid level detected by the infrared liquid level detector is lower than the preset liquid level value, the central controller controls the electromagnet 10 to be energized, and the electromagnet 10 attracts the iron block 9, and the two first clamping tables 4 squeeze the dropper from both sides to a closed state. When the electromagnet 10 is not energized, the two first clamping tables 4 only clamp on both sides of the dropper, and the dropper remains unobstructed. However, when the electromagnet 10 is energized, it can attract the iron block 9, the iron block 9 drives the first moving plate 7 to move, the first moving plate 7 drives the first clamping table 4 to move inwards through the sliding rod 6, and the two first clamping tables 4 clamp the dropper flat from both sides, squeezing the dropper to a closed and airtight state. At this time, the outside air will not enter the drip kettle through the upper dropper, and the patient will not have blood backflow.

[0025] When considering the liquid drop rate and alarming when the drop rate is too fast or too slow, a speaker 34 is provided on the card holder 3. The bottom of the pot groove 32 has a detection port 35, and the detection port 35 is located above the through hole 321. An infrared detector and a timing module are provided in the installation cavity of the card holder 3. The infrared detector faces the detection port 35. The infrared detector, the central controller, and the timing module are sequentially communicatively connected. The timing module is used to count the dripping time interval t between two adjacent liquid drops. The central controller calculates the liquid drop rate v = 60 / t, with the unit of drops per minute. When the drop rate exceeds the preset drop rate range, the central controller controls the speaker 34 to alarm. If the obtained actual drop rate is greater than the maximum value of the preset drop rate range, a sound alarm of "too fast drop rate" will be issued; if the obtained actual drop rate is less than the minimum value of the preset drop rate range, a sound alarm of "too slow drop rate" will be issued. In addition, when the liquid level in the drip pot is too low and the two first clamping platforms 4 close the dropper, the central controller can also control the speaker 34 to alarm, reminding medical staff to check whether the dripping is completed.

[0026] This embodiment can be applied to the drop monitoring and alarming of a large number of existing conventional infusion sets. It can automatically lock the dropper when the liquid level in the drip pot is too low to prevent blood backflow. When the infrared liquid level detector detects that the liquid level is lower than the preset liquid level value, the central controller controls the electromagnet 10 to be energized. The electromagnet 10 drives the first moving plate 7 to move by attracting the iron block 9, thereby driving the first clamping platform 4 to move. The two first clamping platforms 4 are used to clamp the dropper to the locked state, and the dropper is airtight, so that the patient will not have blood backflow, ensuring the safety of infusion.

[0027] Embodiment 2, as Figures 1 - 6 shown, an intelligent infusion controller proposed in this embodiment. Compared with Embodiment 1, in this embodiment, the inner side of the second clamping platform 5 is hollow and filled with a heat-conducting liquid. The heat-conducting liquid can be purified water or other liquids that can effectively conduct heat, such as the liquid in an existing electric hot water bag. This liquid contains electrolytes (such as sodium chloride), which can enhance the conductivity of water and make the heating more uniform and efficient. It also contains preservatives (such as sodium benzoate): which can prevent the growth of microorganisms in water and extend the service life of the liquid.

[0028] The second clamping platform 5 has an opening communicating with the sliding cylinder 12. An electric heating wire 15 is arranged inside the second clamping platform 5 and the sliding cylinder 12. The end of the electric heating wire 15 has a first conductive joint 16 arranged at the outer end of the sliding cylinder 12. A battery and a conductive component are arranged in the installation cavity of the clamping seat 3. The battery is electrically connected to the conductive component. The conductive component includes a second conductive joint 17 facing the first conductive joint 16. When the drip kettle is not clamped by the second clamping platform 5, the second conductive joint 17 faces the first conductive joint 16. The second conductive joint 17 is electrically connected to the battery. When the first conductive joint 16 and the second conductive joint 17 are in contact, the electric heating wire 15 is powered on to heat the heat-conducting liquid inside the second clamping platform 5, and the heat is transferred to the liquid in the drip kettle through the second clamping platform 5 to assist in heating the liquid and improve the comfort of the patient during infusion.

[0029] As Figure 3 , Figure 5 and Figure 6 shown, the conductive component further includes a fixing frame 20 arranged on the inner wall of the clamping seat 3, two connecting rods 19 distributed in parallel and rotatably arranged at one end on the fixing frame 20, a swing rod 18 rotatably connected to the other ends of the two connecting rods 19, and an elastic component for elastically tensioning one connecting rod 19. The swing rod 18 is parallel to the fixing frame 20, and the second conductive joint 17 is arranged on the swing rod 18. The elastic component can tension the connecting rod 19 so that the second conductive joint 17 can be abutted by the first conductive joint 16.

[0030] As Figure 5 shown, the elastic component includes a connecting platform 21 arranged on one connecting rod 19, an arc-shaped rod 22 and an arc-shaped cylinder 23 distributed around the rotation center axis of the connecting rod 19 on the fixing frame 20, and a third spring 24 sleeved on the outer periphery of the arc-shaped rod 22 and connected to the connecting platform 21 and the arc-shaped cylinder 23 at both ends respectively. The arc-shaped rod 22 is slidably arranged on the arc-shaped cylinder 23. The outer end of the arc-shaped rod 22 is connected to the connecting platform 21, and the outer end of the arc-shaped cylinder 23 is connected to the fixing frame 20. The third spring 24 can tension the connecting platform 21, and the connecting platform 21 is arranged on the connecting rod 19, so the tension of the connecting rod 19 can be realized.

[0031] In this embodiment, when the second clamping platform 5 clamps the drip kettle, the second clamping platform 5 moves outward, the sliding cylinder 12 and the first conductive joint 16 move outward, the first conductive joint 16 contacts the second conductive joint 17 for conduction, so as to heat the heat-conducting liquid in the second clamping platform 5 by using the electric heating wire 15, thereby heating the liquid in the drip kettle and improving the comfort of the patient during infusion.

[0032] Embodiment Three, as Figures 1 - 6As shown in the figure, an intelligent infusion controller proposed in this embodiment. Compared with the second embodiment, in this embodiment, a push rod 25 is rotatably arranged in the installation cavity of the card seat 3. One end of the push rod 25 is located on the side of the first moving plate 7 facing the first fixing plate 8, and the other end abuts against a connecting rod 19. When the electromagnet 10 is energized, the first moving plate 7 pushes one end of the push rod 25, and the other end of the push rod 25 pushes the connecting rod 19 outwards, and the second conductive joint 17 disengages from the first conductive joint 16.

[0033] In this embodiment, when the liquid level in the drip chamber is too low, the electromagnet 10 is energized, the first moving plate 7 moves inwards, the first moving plate 7 pushes the push rod 25, the push rod 25 pushes the connecting rod 19 outwards, the third spring 24 is compressed, the swing rod 18 rotates outwards, the second conductive joint 17 disengages from the contact with the first conductive joint 16, and the electric heating wire 15 is powered off to stop heating the liquid, which is safer and energy-saving.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. An intelligent infusion controller, characterized in that, Comprising: A housing, with a card holder (3) provided inside. The inside of the card holder (3) has an installation cavity. The card holder (3) has a first pipe groove (31), a pot groove (32), and a second pipe groove (33) that are sequentially connected from top to bottom. Multiple through holes (321) are arranged side by side at the bottom of the pot groove (32) in the vertical direction; A clamping mechanism, including two groups of first clamping components symmetrically distributed at the first pipe groove (31) and two groups of second clamping components symmetrically distributed at the pot groove (32). The first clamping component includes a first fixing plate (8) provided on the inner wall of the card holder (3), a sliding rod (6) slidably arranged on the first fixing plate (8), a first clamping table (4) and a first moving plate (7) respectively connected to both ends of the sliding rod (6), and a first spring (61) sleeved on the outer periphery of the sliding rod (6) and connected to the first clamping table (4) and the first fixing plate (8) at both ends; A locking component, with two groups symmetrically arranged, including an iron block (9) provided on the first moving plate (7) and an electromagnet (10) provided on the first fixing plate (8); An infrared liquid level detector, arranged in the installation cavity of the card holder (3), with the detection direction facing the through holes (321); A central controller, communicatively connected to the infrared liquid level detector. When the liquid level detected by the infrared liquid level detector is lower than the preset liquid level value, the central controller controls the electromagnet (10) to be energized. The electromagnet (10) attracts the iron block (9), and the two first clamping tables (4) squeeze the dropper from both sides to a closed state.

2. The intelligent infusion controller according to claim 1, wherein, A speaker (34) is provided on the card holder (3). The bottom of the pot groove (32) has a detection port (35). The detection port (35) is located above the through holes (321). An infrared detector and a timing module are arranged in the installation cavity of the card holder (3). The infrared detector faces the detection port (35). The infrared detector, the central controller, and the timing module are sequentially communicatively connected. The timing module is used to count the dripping time interval t between two adjacent liquid drops. The central controller calculates the liquid drop speed v = 60 / t, with the unit of drops per minute. When the drop speed exceeds the preset drop speed range, the central controller controls the speaker (34) to alarm.

3. The intelligent infusion controller according to claim 1, characterized in that, The second clamping component includes a second fixing plate (14) provided on the inner wall of the card holder (3), a sliding cylinder (12) slidably arranged on the second fixing plate (14), a second clamping table (5) and a second moving plate (13) respectively connected to both ends of the sliding cylinder (12), and a second spring (11) sleeved on the outer peripheral side of the sliding cylinder (12) and connected to the second clamping table (5) and the second fixing plate (14) at both ends.

4. The intelligent infusion controller according to claim 3, characterized in that, The top surface of the first clamping table (4) is a first inclined surface that gradually inclines towards the bottom of the first pipe groove (31), and the top surface of the second clamping table (5) is a second inclined surface that gradually inclines towards the bottom of the pot groove (32).

5. The intelligent infusion controller according to claim 3, characterized in that, The inner side of the second clamping table (5) is hollow and filled with heat-conducting liquid. The second clamping table (5) has an opening communicating with the sliding cylinder (12). An electric heating wire (15) is arranged inside the second clamping table (5) and the sliding cylinder (12). The end of the electric heating wire (15) has a first conductive joint (16) arranged at the outer end of the sliding cylinder (12). A battery and a conductive component are arranged in the installation cavity of the card seat (3). The battery is electrically connected to the conductive component. The conductive component includes a second conductive joint (17) facing the first conductive joint (16).

6. The intelligent infusion controller according to claim 5, wherein, The conductive component further includes a fixing frame (20) arranged on the inner wall of the card seat (3), two connecting rods (19) distributed in parallel and rotatably arranged at one end on the fixing frame (20), a swinging rod (18) rotatably connected to the other ends of the two connecting rods (19), and an elastic component for elastically tensioning one connecting rod (19). The swinging rod (18) is parallel to the fixing frame (20). The second conductive joint (17) is arranged on the swinging rod (18).

7. An intelligent infusion controller according to claim 6, characterized in that, The elastic component includes a connecting platform (21) arranged on one connecting rod (19), an arc-shaped rod (22) and an arc-shaped cylinder (23) distributed around the rotation central axis of the connecting rod (19) on the fixing frame (20), and a third spring (24) sleeved on the outer periphery of the arc-shaped rod (22) and connected to the connecting platform (21) and the arc-shaped cylinder (23) at both ends respectively. The arc-shaped rod (22) is slidably arranged on the arc-shaped cylinder (23). The outer end of the arc-shaped rod (22) is connected to the connecting platform (21), and the outer end of the arc-shaped cylinder (23) is connected to the fixing frame (20).

8. An intelligent infusion controller according to claim 6, wherein, A push rod (25) is rotatably arranged in the installation cavity of the card seat (3). One end of the push rod (25) is located on the side of the first moving plate (7) facing the first fixing plate (8), and the other end abuts against one connecting rod (19). When the electromagnet (10) is energized, the first moving plate (7) pushes one end of the push rod (25), and the other end of the push rod (25) externally pushes the connecting rod (19), and the second conductive joint (17) disengages from the first conductive joint (16).

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