WO2017132942A1 - Liquid flow measuring device - Google Patents

Abstract

Disclosed is a liquid flow measuring device, with the top thereof being provided with a dropping pipette (18) in the shape of a dropping funnel, wherein a pressure channel (112) in communication with the interior is provided at the periphery of a dropping pipette body (10), a pressure sensing module (30) is provided at an outer end of the pressure channel (112), a pressure communication tube (20) is provided right below the liquid dropping pipette (18), and the bottom end of the pressure communication tube (20) extends to the position close to an inner end of the pressure channel (112). When used in a micro flow measurement pipeline, the device can be connected in series to a small flow pipeline; and when used in an infusion system, the device is connected in series to a medicinal solution infusion pipeline, and during infusion, the medicinal solution enters the dropping pipette body (10), and the pressure sensing module (30) detects the number of drops of the medicinal solution and then transfers this information to a hospital background computer or a built-in single chip (101) for calculation, so as to calculate the flow velocity and flow rate of infusion and determine whether the infusion stops or backflow occurs, thereby achieving the effect of automatically monitoring the infusion process to avoid the occurrence of accidents.

Description

Liquid flow measuring device Technical field

The invention relates to a device for applying biochemical reaction, chemical reaction, brewing, washing, feeding and measuring, and medical infusion, in particular to a shape like a dripper, which changes the continuous flow into a drip, detection liquid The device for the number of drops, the internal or external device cooperating with this, can calculate the flow rate and flow rate accordingly.

Background technique

For small flow measurement, it has always been an extremely difficult task, especially for flow measurement with flow rate of less than 1, 2 liters per hour or a few liters (such as 0.1-1.0 L/h). Conventional flow measurement methods such as turbines and vortex flowmeters have large starting flow rates, and it is impossible to measure small flows. Or it is difficult to achieve such a small flow rate range by using a float flowmeter that may be applicable. More precise processing.

For the sake of explanation, we only use the existing medical infusion method to explain the existing technology. Other existing technologies for small-flow measurement such as feeding metering control are similar to the existing medical infusion methods, so we will not repeat them. . Referring to FIG. 10, the infusion bag 80 filled with the liquid medicine is suspended on the bracket, and the infusion tube 81 connected to the bottom of the infusion bag 80 is combined with the disposable needle 82 of the injectable body, and a drop is connected in the middle of the infusion tube 81. Bucket 83, the function of the drip bucket 83 is to provide the medical staff to observe the speed of the drip to prevent accidental occurrence. When used, the disposable needle 82 is inserted into the vein of the human body's arm, the back of the hand or the inner side of the thigh to achieve the effect of continuously injecting the liquid to the human body.

In the process of injecting the drug solution, the infusion rate is controlled by providing an infusion valve 84 around the infusion tube 81, and the infusion valve 84 is used to change the flowable area of the infusion tube 81 to control the speed and flow rate of the infusion. However, the regulating infusion valve 84 for controlling the infusion rate, in particular the electric or pneumatic regulating infusion valve 84, requires energy driving during use, and the power consumption is relatively large and the weight is relatively heavy, so the use is not so convenient.

The manner of adjusting the flow rate of the infusion tube 81 can adjust the speed of injecting the liquid into the human body. However, if the medical personnel need to know whether the speed of the liquid medicine is appropriate, or whether the liquid medicine in the infusion bag 80 is used up, it can only be artificial. The way of observing, recording, and calculating the recorded results can be known. This kind of manual observation and recording method can not automatically issue an alarm notification except when the infusion speed is abnormal. Other than the medical staff, it is also impossible to replace the new infusion bag 80 when the liquid medicine in the infusion bag 80 is used up in a timely manner. In addition, since the human operation factor has a high degree of uncertainty, such a manual observation and recording method is also likely to cause accidental occurrence such as medical negligence and blood counterflow such as inability to replace the infusion bag 80.

In order to solve the above-mentioned uncertainty of human operation, there are technical solutions that the creators try to solve, using the counting method of weighing the infusion bag or installing the number of photoelectric detection spots next to the dripper to measure the infusion to some extent. Speed and infusion volume.

However, the disadvantage of the aforementioned weighing method is that the pipeline of the infusion tube is easily pulled, which affects the accuracy of the measurement. The method of installing photoelectric detection near the dripper, such as TW Patent Application No. 85213537, the patent case of the invention of the drip monitor, is to install a photodetector beside the dripper, and the disadvantage is that the dripper specifications produced by various manufacturers Different sizes and different sizes. This technology can only be applied to products that are produced by ourselves. If it is not for the different specifications of the dropper to produce different specifications, it is necessary to calibrate the size of the products for different manufacturers. The calculation of the flow rate, due to the large number of manufacturers of drip buckets, is a task that is very labor intensive, and the hospital is not convenient to cooperate. In addition, the technology of detecting the number of drops of photoelectricity is also easy to be affected by each The problem of light source interference.

Summary of the invention

Due to the difficulty of small flow measurement, the present invention intends to design a device such as a drip bucket, which converts a continuous flow into a trickle flow, and performs a drop-by-drop counting to realize measurement of a small flow rate. It can be connected to any small flow pipeline, or it can be connected to the existing infusion tube to count the droplets. In order to calculate the flow rate and flow rate of the infusion, and to determine whether the infusion is stopped or reversed, the automatic detection drug can be used. The effect of fluid flow conditions.

In order to achieve the above object, the present invention provides a liquid flow measuring device comprising:

a dropper body is provided with a liquid storage tube, and a mounting seat is formed around the liquid storage tube, and a pressure guiding passage is formed in the mounting seat, and an inner end of the pressure guiding passage communicates with an inner portion of the liquid storage tube. a liquid drop tube is disposed on the top of the liquid storage tube, the width of the liquid drop tube is narrower than the width of the liquid storage tube, and a funnel-shaped drip nozzle is formed at the bottom of the liquid drop tube;

a pressure communication tube fixed in the middle of the liquid storage tube, the top end of the pressure communication tube is located directly below the drip nozzle, and a pressure communication hole is formed in the pressure communication tube, the bottom end of the pressure communication hole is closer to the top end The inner end of the pressure channel;

a pressure sensing module is disposed at an outer end of the pressure guiding channel, the pressure sensing module enclosing an outer end of the pressure guiding channel, and the pressure sensing module can measure the pressure of the fluid in the pressure guiding channel Variety.

Further, the present invention is provided with a data transmission module in the mounting base, and the data transmission module is electrically connected to the pressure sensing module, thereby transmitting the droplet pressure data measured by the pressure sensing module.

Preferably, the data transmission module of the present invention comprises a wireless transmission unit, wherein the wireless transmission unit transmits the droplet pressure data measured by the pressure sensing module to the wireless manner.

Preferably, the present invention is provided with a single chip on the data transmission module, the single chip is electrically connected to the data transmission module, accepts the droplet pressure data transmitted by the data transmission module, and according to the Whether the drip tube drops a little, measures the number of dropped drops, and calculates the flow rate and flow rate of the drug solution passing through the drip tube per unit time.

Further, the liquid storage tube according to the present invention is divided into an upper liquid storage tube and a lower liquid storage tube which are connected in a straight line, and the mounting seat is divided into an upper mounting seat and a lower mounting seat which are combined with the upper and lower sides, and The lower mounting seat is respectively formed around the bottom of the upper liquid storage tube and around the top of the lower liquid storage tube, and a flow adjusting groove is opened in the middle of the interface between the upper mounting seat and the lower mounting seat, and the flow adjusting groove is in the middle and the upper side. The lower liquid storage tube communicates with a perforated plate embedded in the middle of the flow regulating groove, and the perforated plate divides the flow regulating groove into upper and lower portions, and two or more flows are bored in the perforated plate. Adjust the hole, when setting three or four flow adjustment holes, the area ratio is 1:2:4 or 1:2:4:8;

An induction core slot is respectively disposed at a position of each of the flow adjustment holes of the mounting seat, each of the induction core slots is a vertical hole, and an inner end is communicated with the flow adjustment groove, and an outer end of each of the induction core slots is a closed end. A magnet is respectively disposed at a position corresponding to an outer end of each of the induction core slots, and an electromagnetic induction tube and an induction coil surrounding the electromagnetic induction tube are disposed around each of the induction core slots, and the electromagnetic induction tube is used to strengthen the induction coil. Inductive magnetic field strength, each induction coil is electrically connected to the data transmission module, and an induction core rod that can be attracted and positioned by each magnet is disposed in each of the induction core slots, and an inner end of each induction core rod forms a tapered portion. The foregoing further configuration of the present invention can block the corresponding flow adjustment hole when the induction core rod is dropped, so that the flow rate through the flow adjustment hole is zero; when the induction core rod is raised, the corresponding flow adjustment hole is fully connected. In this way, when three flow adjustment holes are set, eight flow rates can be used by combining the opening and closing conditions of the three flow adjustment holes with an area ratio of 1:2:4; if four flow adjustment holes are provided, it is utilized. Sixteen kinds of flow rates can be realized by combining the opening and closing conditions of the four flow adjustment holes of 1:2:4:8.

Further, the pressure guiding passage of the present invention is disposed in the form of extending in the up and down direction An upper mounting end, the inner end of the pressure guiding passage is in communication with the flow adjusting groove, and a slot is recessed in a middle of the top surface of the perforated plate, and the top surface of the perforated plate is located below the pressure guiding channel An outlet slot is recessed, and a connecting hole communicating with the slot and the outlet slot is bored in the inner portion of the orifice plate, and the pressure communication tube is fixed at the bottom end of the slot, the pressure is fixed The communication hole communicates with the connection hole.

Further, the pressure guiding passage of the present invention is disposed in the upper mounting seat in a manner of extending in the up and down direction, and the data transmission module is detachably coupled to the upper mounting seat and located The upper sensing tube is formed on the upper mounting seat, corresponding to the periphery of each of the sensing core slots, and a circular coil groove is recessed downwardly on the top surface of the upper mounting seat. Each coil slot is concentric with each of the induction core slots, and a circular coil tube is disposed in each coil slot, and the induction coils are embedded in the coil tubes, and the electromagnetic induction tubes are combined in the coil tubes. The inner surface of each coil tube is connected to the bottom of the data transmission module, the magnet is coupled to the bottom of the data transmission module, and the pressure sensing module is coupled to the bottom of the pressure sensing module.

When the invention is used, it can be used for metering in the fields of biochemistry, chemical engineering or mining. The following is a description of how the present invention can be used by way of example in which the present invention is used in series in a medical infusion system. When the invention is serially connected in the infusion system for metering, the upper end of the invention is inserted into the bottom of the infusion bag, and the top end of the infusion tube is connected to the bottom end of the liquid storage tube, and the infusion solution is arranged around the infusion tube. Adjusting the infusion valve of the flow rate, and connecting a dropper between the regulating infusion valve and the invention, and connecting a disposable needle to the outer end of the infusion tube, and flowing out of the infusion bag when the disposable needle penetrates into the human body The drug solution can be injected into the human body through the present invention, a drip bucket, an infusion tube, and a disposable needle.

When the infusion system of the present invention is used, the liquid medicine in the infusion bag first flows into the drip tube of the present invention, such as a dripper, and then the liquid medicine in the drip tube is intermittently dropped from the drip nozzle in a drip manner. Falling in the liquid storage tube, the liquid medicine in the liquid storage tube is gradually flooded through the top end of the infusion tube and the bottom end of the pressure guiding channel, and the liquid level of the final medical liquid solution is located in the middle of the liquid storage tube and lower than the top end of the pressure communication tube .

When the liquid medicine drops from the drip nozzle of the drip tube into the liquid storage tube, it will first drop on the top end of the pressure communication tube. Due to the incompressibility of the liquid and the non-directional property of the pressure transfer, the medicine droplet falls into the pressure communication tube. The pressure can be transmitted from the liquid in the pressure communication hole to a position closer to the bottom end of the pressure guiding channel, and then the pressure sensing module measures the unit time as the liquid in the liquid storage tube is transferred to the air in the pressure guiding channel. The pressure change of the number of droplets inside also senses whether there is a drop of the liquid medicine in the liquid storage tube, and then transmits the pressure information measured by the pressure sensing module to the data processing center wirelessly or by wire. Or a device or component such as a single chip performs calculation processing.

Since the size of the liquid droplets in the liquid drop tube by the drip nozzle is similar, and the size of each liquid medicine can be measured in advance by the same size drip tube, when the data processing center or the single wafer receives the pressure sensing When the pressure information measured by the module is measured, the flow rate of the liquid medicine and the speed of the liquid medicine flow per unit time can be calculated, so that the medical personnel can understand the condition of the infusion system and adjust the flow rate of the infusion system according to the demand of the infusion solution; or The data processing center or the single wafer can judge the amount of the liquid medicine in the infusion bag and whether it needs to be replaced after the message is not dropped, or judge that the pressure of the drip tube is lower than the pressure in the liquid storage tube. The problem of countercurrent flow of blood at the disposable needle.

Compared with the prior art, the present invention has the beneficial effects that the present invention is a device such as a drip bucket, which converts a continuous flow rate into a trickle flow, and performs a drop-by-drop counting, with a pressure detector matched with the design of the dropper body. Measuring the number of drops in the dropper body, providing a data processing center or a single chip and other microcomputers to automatically calculate the infusion rate of the infusion system, the amount of infusion, whether the infusion bag needs to be replaced, and whether blood reverse flow may occur, instead of manual recording The manpower and the errors that can occur when avoiding manual recording, and the ability to monitor the progress of the infusion process, automatically monitor the infusion process, and avoid medical negligence or human accidents.

The invention is a device which can operate independently. Since the device itself has a dropper body, the size of the measured drip is fixed, and it is not necessary to match the drip of the infusion system to calibrate the size of the drip, as long as the infusion is used. The capacity of the bag can correctly calculate the stock of the infusion bag, so it can be used on any existing infusion bag, without the cooperation of the infusion bag manufacturer. In addition, the invention has the advantages of small volume, low power consumption, and can be implemented by using a battery, and is very convenient to use. When the invention is connected to various feeding pipelines for feeding metering, the connection mode may be an insertion mode, a screw connection method or other quick joint connection manner.

DRAWINGS

1 is a schematic cross-sectional view showing a liquid flow measuring device according to a preferred embodiment of the present invention;

2 is another schematic cross-sectional view of a liquid flow measuring device according to a preferred embodiment of the present invention;

Figure 3 is a schematic cross-sectional view showing a reusable portion of a preferred embodiment of the present invention;

Figure 4 is a plan view of a perforated plate in accordance with a preferred embodiment of the present invention;

Figure 5 is a schematic view showing the implementation of the infusion system according to a preferred embodiment of the present invention;

Figure 6 is a schematic view showing the data of the drip pressure of the drug solution installed in the infusion system according to a preferred embodiment of the present invention;

Figure 7 is a schematic view showing the suspension of the liquid medicine installed in the infusion system according to the preferred embodiment of the present invention;

Figure 8 is a schematic view showing the flow rate of adjusting the liquid medicine installed in the infusion system according to a preferred embodiment of the present invention;

Figure 9 is a cross-sectional view showing the addition of a single wafer in accordance with a preferred embodiment of the present invention;

Fig. 10 is a schematic view showing the appearance of a conventional infusion system.

Symbol Description:

10 dropper body 11 on the liquid storage tube

111 upper mount 112 pressure channel

113 induction core slot 114 coil slot

12 lower storage tube 121 lower seat

13 sealing ring 14 flow adjustment groove

15 with orifice plate 151 flow adjustment hole

152 slot 153 exit slot

154 connection hole 16 magnet

17 induction mandrel 171 tip cone

18 drop tube 181 tip

182 drop nozzle 19 rubber block

20 pressure communication pipe 21 bucket

22 pressure communication hole 30 pressure sensing module

40 drive 41 coil tube

42 induction coil 43 electromagnetic induction tube

50 data transmission module 51 wireless transmission unit

60 outer cover 61 outer cover perforation

80 infusion bag 81 infusion tube

82 disposable needle 83 drip bucket

84 infusion control valve 90 infusion bag

91 infusion tube 911 tip

92 disposable needle 93 adjustment infusion valve

94 drip 100 data processing center

101 single chip

detailed description

In order to understand the technical features and practical effects of the present invention in detail, it can be implemented in accordance with the contents of the specification, and further described in detail with reference to the preferred embodiments shown in the drawings.

1 to 4, the present invention is intended to design a device such as a drip bucket, which converts a continuous flow into a trickle flow, and counts by drop, the configuration of which comprises a drop like a drip bucket. The tube body 10, and a pressure communication tube 20, a pressure sensing module 30, three drivers 40, a data transmission module 50 and an outer cover 60 respectively disposed on the dropper body 10, wherein:

The dropper body 10 is provided with an upper tubular upper storage tube 11 and a straight tubular lower storage tube 12, and the upper storage tube 11 and the lower storage tube 12 are arranged in a straight line above and below, and are stored thereon. An upper mounting seat 111 is protruded outwardly from the bottom of the circumferential surface of the liquid pipe 11, and a mounting seat 121 is protruded outwardly at the top of the circumferential surface of the lower liquid storage pipe 12. The upper mounting seat 111 and the lower mounting seat 121 are respectively disc bodies. The combination of upper and lower can be bonded, fastened, locked or riveted.

A sealing ring 13 is embedded around the abutment of the upper mount 111 and the lower mount 121, and a flow adjusting slot 14 is defined in the middle of the abutment between the upper mount 111 and the lower mount 121. The flow regulating slot 14 is a disc. a space of a shape, and a top side and a middle bottom side of the flow regulating groove 14 are respectively communicated with the upper liquid storage tube 11 and the lower liquid storage tube 12, and the side of the upper mounting seat 111 is extended in the vertical direction. a pressure guiding passage 112 is disposed, and an inner end of the pressure guiding passage 112 communicates with the flow regulating groove 14;

A perforated plate 15 is embedded in the middle of the flow regulating groove 14, and the perforated plate 15 is a circular plate body and its center is concentric with the center of the upper liquid storage tube 11 and the lower liquid storage tube 12, and the periphery of the perforated plate 15 It is clamped between the upper mounting seat 111 and the lower mounting seat 121. The perforated plate 15 divides the flow regulating groove 14 into upper and lower portions, and is surrounded and equally spaced around the perforated plate 15. Three flow adjustment holes 151 are vertically disposed in the arrangement manner, three flow adjustment holes 151 are circular holes and the ratio of the area is 1:2:4, and a slot 152 is recessed in the center of the top surface of the perforated plate 15 An outlet groove 153 is recessed in a position of the top surface of the orifice plate 15 below the pressure guiding passage 112. A connecting hole 154 communicating with the socket 152 and the outlet groove 153 is bored in the interior of the orifice plate 15.

An induction core slot 113 is respectively disposed at a position above the flow adjusting hole 151 of the upper mounting seat 111. Each of the sensing core slots 113 is a vertical hole and the inner end is in communication with the flow regulating groove 14, and each of the sensing core slots 113 The outer end is a closed end, and a magnet 16 is respectively disposed at a position corresponding to an outer end of each of the sensing core slots 113 at a top surface of the upper mounting base 111, and an inductive core rod 17 which can be attracted and positioned by each magnet 16 is disposed in each of the sensing core slots 113. The inner end of each of the induction core rods 17 forms a tapered portion 171 corresponding to each of the induction core slots 113. Around the top surface of the upper mount 111, a circular coil groove 114 is recessed downward, and each coil groove 114 is concentric with each of the induction core grooves 113.

A vertical drip tube 18 is disposed at the top of the upper reservoir tube 11. The width of the drip tube 18 is narrower than the width of the upper reservoir tube 11 and the lower reservoir tube 12, at the top of the droplet tube 18 A tip end 181 is formed, and a funnel-shaped drip nozzle 182 is formed at the bottom of the drip tube 18. The drip nozzle 182 extends into the center of the top of the upper liquid storage tube 11, and a bottom end of the lower liquid storage tube 12 is embedded. A rubber block 19 that closes the bottom end of the lower reservoir tube 12.

The pressure communication tube 20 is a vertical tube body and is inserted in the slot 152 at the bottom end and fixed in the middle of the upper liquid storage tube 11. The top end of the pressure communication tube 20 forms a bucket portion 21, the bucket portion 21 is located directly below the drip nozzle 182, and a pressure communication hole 22 is formed inside the pressure communication tube 20. The position of the top end of the pressure communication hole 22 is higher than the position of the inner end of the pressure guiding passage 112, and the bottom of the pressure communication hole 22 The end is closer to the inner end of the pressure guiding passage 112, and the pressure communication hole 22 communicates with the connecting hole 154 of the orifice plate 15, so that the inner end of the pressure guiding passage 112 is extended to a position close to the inner end of the pressure guiding passage 112. .

The pressure sensing module 30 is disposed on the top surface of the upper mounting base 111 and located at the outer end of the pressure guiding channel 112. The pressure sensing module 30 closes the outer end of the pressure guiding channel 112, and the pressure sensing module 30 can measure the change in pressure of a fluid, such as air, within the pressure channel 112.

Each of the actuators 40 has a circular coil tube 41 disposed in each of the coil grooves 114 so as to be vertically slidable. An induction coil 42 is embedded in each coil tube 41, and an electric coil is coupled to each of the coil tubes 41. The magnetic induction tube 43 surrounds the induction coil 42 of each driver 40 and the electromagnetic induction tube 43 around the induction core rod 17 in each of the induction core grooves 113.

The data transmission module 50 has a circular body and is detachably coupled to the upper mounting base 111. The data transmission module 50 surrounds the upper storage tube 11, and the pressure sensing module 30 is combined. At the bottom of the data transmission module 50, the pressure sensing module 30 is electrically connected to the data transmission module 50. The data transmission module 50 includes a wireless transmission unit 51, and the wireless transmission unit 51 senses the pressure. The data measured by the measuring module 30 is wirelessly transmitted outward, and the magnets 16 are coupled to the bottom of the data transmission module 50. The top end of the coil tube 41 of each driver 40 is connected to the bottom of the data transmission module 50. The induction coils 42 are electrically connected to the data transmission module 50, so that the induction coils 42 are driven by the data transmission module 50; when the data transmission module 50 is detached from the upper mount 111, the pressure sensing module 30, each magnet 16 and each driver 40 will leave the original Located at the position of the upper mount 111.

The outer cover 60 is a circular cover body and is detachably sleeved on the upper mounting seat 111. An outer cover through hole 61 is bored in the middle of the outer cover 60, and the outer cover through hole 61 is sleeved on the drip tube 18. Around the data transmission module 50, the pressure sensing module 30, and the magnets 16 are housed in the outer cover 60 and protected by the outer cover 60.

When the preferred embodiment of the present invention is used, as shown in FIG. 5 to FIG. 7, an example is applied to a medical infusion system, and when installed, the tip end 181 of the drip tube 18 of the present invention is inserted into an infusion bag. At the bottom of the 90, the inside of the infusion bag 90 is filled with the medical liquid, and the tip end 911 of the infusion tube 91 is inserted into the rubber block 19, and an adjusting infusion valve 93 is provided around the infusion tube 91, and the infusion valve 93 and the present invention are adjusted. A drop hopper 94 is connected in series, and a disposable needle 92 is connected to the outer end of the infusion tube 91. The disposable needle 92 can be inserted into the human body to inject the liquid medicine.

In conjunction with the data transmission module 50 and the drivers 40 of the present invention, a data processing center 100 is provided outside the present invention, and the data processing center 100 can receive the wireless signals transmitted by the wireless transmission unit 51 of the data transmission module 50 of the present invention. The calculation process is performed accordingly, and then the result of the calculation process is compared with the value manually input by the operator to the data processing center 100, and then the wireless signal for controlling each driver 40 is sent to the wireless transmission unit 51 according to the result of the determination. The data transfer module 50 selectively controls the operation of each of the drivers 40. The process of the foregoing data processing center 100 in conjunction with the operation of the present invention is described in detail below.

Referring to FIG. 5 and FIG. 6, when the tip end 181 of the drip tube 18 is inserted into the infusion bag 90, the liquid medicine first flows from the infusion bag 90 into the drip tube 18 of the drip tube body 10, and then the drip tube 18 The liquid medicine inside is intermittently dropped from the drip nozzle 182 in a drip manner, and is dropped on the bucket portion 21 at the top end of the pressure communication tube 20, so that the chemical liquid gradually fills the lower liquid storage tube 12, the flow regulating groove 14, and the pressure communication. The pressure communication hole 22 of the tube 20 and the connection hole 154 in the perforated plate 15 , the liquid level of the liquid medicine in the drop tube body 10 will finally be at the bottom end of the pressure guiding passage 112 and the top end of the pressure communication tube 20 . between. Then, the liquid medicine in the dropper body 10 is outwardly flowed out to the disposable needle 92 by the infusion tube 91 piercing the bottom of the dropper body 10, and then injected into the human body by the disposable needle 92.

During the intermittent dropping of the chemical liquid by the dropping nozzle 182, the chemical liquid dropped on the bucket portion 21 exerts an instantaneous pressure on the liquid in the pressure communication hole 22, and the liquid is incompressible and the pressure transmitting is non-directional. The pressure at this moment is transmitted to the periphery of the bottom end of the pressure guiding passage 112 through the liquid medicine in the connecting hole 154, so that the liquid medicine at the pressure is applied to the air in the pressure guiding passage 112, so that the pressure sensing mold is applied. The group 30 can detect the magnitude of the instantaneous pressure generated by the liquid medicine intermittently dripping from the drip nozzle 182, the amount of the liquid dropped per unit time, and the presence or absence of continuous dripping of the liquid medicine, and the above pressure data is The wireless transmission unit 51 of the data transmission module 50 is wirelessly transmitted to the data processing center 100 for reception.

Since the size of each drop of the liquid dripping from the outlet of the drip nozzle 182 is similar, and the size of each drop of the liquid can be measured in advance by the input data processing center 100, when the data processing center 100 receives the pressure sensing module 30. When the pressure data is obtained, the flow rate of the chemical liquid per unit time and the speed of the liquid medicine flow can be calculated, and the flow rate and speed of the liquid medicine are compared with the values input by the operator, for example, medical personnel, into the data processing center 100 in advance. Then, the data processing center 100 sends a wireless signal to the wireless transmission unit 51 of the data transmission module 50 to control the flow of the liquid medicine to adjust the flow rate of the liquid medicine to adjust the flow rate of the medical liquid to the value input by the medical staff in advance into the data processing center 100.

The magnitude data of the instantaneous pressure generated by the intermittent drip solution allows the data processing center 100 to exclude data whose pressure is significantly lower than the average value, and eliminates the number of false alarms. The data processing of the presence or absence of the continuous dripping liquid is because the liquid medicine volume in the infusion bag 90 is known. If the data processing center 100 calculates that the volume of the liquid medicine flowing out of the infusion bag 90 conforms to the liquid medicine volume of the infusion bag 90, At this time, the data outputted by the pressure sensing module 30 indicates that there is no dripping liquid. At this time, the data processing center 100 can judge that the liquid medicine in the infusion bag 90 has been exhausted, and sends a message to notify the medical staff to replace the infusion bag 90, and at the same time The data processing center 100 sends a wireless signal to the wireless transmission unit 51 of the data transmission module 50 to control the flow of the drug solution from each of the drivers 40.

As shown in FIG. 5 and FIG. 7 , if the data output by the pressure sensing module 30 indicates that the drip nozzle 182 has no dripping liquid, and the data processing center 100 calculates that the volume of the liquid medicine flowing out of the infusion bag 90 is smaller than that of the infusion bag 90 . The liquid medicine capacity, at which time the data processing center 100 can judge that the pressure in the drip tube 18 is lower than or equal to the pressure outputted from the infusion tube 91, and the blood can be returned to the infusion tube 91 at the disposable needle 92. At this time, the data processing center 100 sends a wireless signal to the wireless transmission unit 51 of the data transmission module 50 to control the flow of the drug solution by each of the drivers 40.

Referring to FIG. 8 , when the wireless transmission unit 51 of the data transmission module 50 receives the wireless signal transmitted by the data processing center 100 and controls each driver 40 to adjust the flow rate of the liquid medicine or stop the flow of the liquid medicine, the liquid medicine according to the required liquid medicine is required. The flow rate and the flow rate are high and low, and the induction coil 42 of each driver 40 is selectively driven by the data transmission module 50, so that the induction coils 42 drive the induction core rods 17 to move downward or return to the original position, so that the induction core rods 17 are The tapered portion 171 closes the corresponding flow adjustment hole 151, or makes the pair The flow rate adjustment hole 151 is in an open state. The above-described structure for adjusting the infusion flow rate of the present invention does not require an electric or pneumatic device having a driving action externally, so that the overall weight of the present invention can be as small as about 40 gram, compared to the existing infusion system requiring an external driving device. Only one-fifth of the weight makes the invention more convenient to use.

As shown in FIG. 4, since the area of the three flow regulating holes 151 on the perforated plate 15 is a ratio of 1:2:4, the manner in which each of the induction core rods 17 is selectively closed to each of the flow regulating holes 151 can be combined. When there are 8 kinds of flow area changes such as 0 and 1 to 7, when three high flow rates and flow rates are required, all three flow adjustment holes 151 are opened, and when it is necessary to prohibit the flow of the liquid, it is three. The induction core rods 17 completely close the three flow adjustment holes 151. The method of the invention cooperates with the data processing center 100 to calculate the infusion flow rate and the flow rate, to detect whether the infusion bag 90 needs to be replaced, and to detect whether the disposable needle 92 has a blood countercurrent condition, and to monitor the whole process during the infusion. Efficacy, avoiding the manual reporting of the inaccuracy of the infusion rate and accidents.

As shown in FIG. 1 and FIG. 3 , since the outer cover 60 of the present invention is detachable, and the pressure sensing module 30 is coupled to the bottom of the data transmission module 50 , each magnet 16 is coupled to the data transmission module 50 . At the bottom of the bottom, the top end of the coil tube 41 of each driver 40 is connected to the bottom of the data transmission module 50. Therefore, after the invention is used, the dropper body 10 that has been in contact with the medical liquid is medical waste, and can only be disposable. The used part needs to be discarded and can not be reused after use, but the outer cover 60 and the data transmission module 50 together with the pressure sensing module 30, the magnets 16 and the drivers 40 can be detached from the dropper body 10 The seat 111 is reused, so that the single-use dropper body 10 can be repeatedly used to form the present invention for reuse, achieving a cost saving effect.

In addition to the foregoing preferred embodiment, the present invention is provided with the data processing center 100 externally, and the external data processing center 100 accepts the pressure data transmitted by the data transmission module 50, performs calculation processing with pressure data, and controls each driver. In addition to the operation of 40, please refer to FIG. 9. Alternatively, the function of the data processing center 100 may be replaced by a single chip 101, and the single chip 101 may be disposed on the data transmission module 50 to make the single chip 101 and the same. The data transmission module 50 is electrically connected, and the data transmission module 50 directly transmits the pressure data measured by the pressure sensing module 30, and controls each driver 40 to drive the respective induction core rods 17 to operate. At this time, the data transmission module 50 may not The wireless transmission unit 51 is provided. When the data transfer module 50 is detached from the upper mount 111 of the dropper body 10, the single wafer 101 can also be detached along with the data transfer module 50, and has the same reusable effect.

In addition to the foregoing preferred embodiments, the present invention divides the upper storage tube 11 and the lower storage tube 12 into two parts. In addition to the composition of the dropper body 10, the upper sealing tube 13 and the upper mounting seat 111 around it, and the lower storage tube 12 and the lower mounting seat therearound may be directly provided without the sealing ring 13 described above. The 121 is integrated into a structure that becomes a liquid storage tube and a mounting seat provided around the liquid storage tube.

In addition to the foregoing preferred embodiment, the pressure communication tube 20 is fixed to the center of the perforated plate 15 or the pressure communication tube 20 is not fixed to the center of the perforated plate 15, but A hollow bracket is provided between the pressure communication tube 20 and the upper and lower liquid storage tubes 11, 12, and the pressure communication tube 20 is fixed in the middle of the drop tube body 10, at which time the bottom end of the pressure communication tube 20 is bendable and Extending in the direction of the bottom end of the pressure guiding passage 112, the bottom end of the pressure communication hole 22 is closer to the bottom end of the pressure guiding passage 112 than the top end, so that the pressure of the liquid medicine dripping at the top end of the pressure connecting tube 20 can be more smoothly The ground is transmitted to the pressure guiding channel 112 for measurement by the pressure sensing module 30.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims (10)

A liquid flow measuring device, comprising: a dropper body is provided with a liquid storage tube, a mounting seat is formed around the liquid storage tube, and a pressure guiding passage is formed in the mounting seat, and an inner end of the pressure guiding passage and the liquid storage tube are Internally communicating, a drip tube is disposed at the top of the liquid storage tube, the width of the drip tube is narrower than the width of the liquid storage tube, and a funnel-shaped drip nozzle is formed at the bottom of the drip tube; a pressure communication tube fixed in the middle of the liquid storage tube, the top end of the pressure communication tube is located directly below the drip nozzle, and a pressure communication hole is formed in the pressure communication tube, and the bottom of the pressure communication hole The end is closer to the inner end of the pressure guiding channel than the top end; a pressure sensing module is disposed at an outer end of the pressure guiding channel, the pressure sensing module encloses an outer end of the pressure guiding channel, and the pressure sensing module can measure the pressure The pressure change of the fluid in the channel. The liquid flow measuring device according to claim 1, wherein a data transmission module is disposed on the mounting base, and the data transmission module is electrically connected to the pressure sensing module to transmit the The pressure data measured by the pressure sensing module. The liquid flow measuring device according to claim 2, wherein said data transmission module comprises a wireless transmission unit, and said droplet pressure data measured by said wireless sensing unit by said pressure sensing module Transfer out wirelessly. The liquid flow measuring device according to claim 2, wherein a single wafer is disposed on said data transmission module, said single wafer being electrically connected to said data transmission module to receive said data transmission mode The drip pressure data transmitted by the group, and according to whether the drip tube is dripped a little, the number of dropped drops is measured, and the flow rate and flow rate of the liquid medicine passing through the drip tube per unit time are calculated. The liquid flow measuring device according to any one of claims 2 to 3, wherein the liquid storage tube is divided into an upper liquid storage tube and a lower liquid storage tube which are connected in a straight line, and the mounting base is divided into An upper mount and a lower mount combined with the upper and lower sides, and the upper and lower mounts are respectively formed around the bottom of the upper liquid storage tube and around the top of the lower liquid storage tube, and are mounted on the upper mount and the lower mount. a flow adjusting groove is defined in the middle of the docking portion, and the middle of the flow adjusting groove communicates with the upper and lower liquid storage tubes, and an orifice plate is embedded in the middle of the flow adjusting groove, and the flow plate has the flow rate The adjusting groove is divided into upper and lower parts, and a plurality of flow adjusting holes are arranged around the perforated plate; An induction core slot is respectively disposed at a position of each of the flow adjustment holes of the mounting seat, and each of the induction cores The slot is a vertical hole and the inner end is in communication with the flow regulating groove, and the outer end of each of the induction core slots is a closed end, and a magnet is respectively disposed at a position corresponding to the outer end of each of the induction core slots of the mounting seat. An electromagnetic induction tube and an induction coil surrounding the electromagnetic induction tube are disposed around the slot, and each induction coil is electrically connected to the data transmission module, and an induction core capable of being attracted and positioned by each magnet is disposed in each of the induction core slots. The rods have a tapered portion at the inner end of each of the induction mandrels. The liquid flow measuring device according to claim 5, wherein said pressure guiding passage is disposed in said upper mounting seat in a manner extending in an up-and-down direction, and said inner end of said pressure guiding passage a flow adjusting groove is communicated, a slot is recessed in the middle of the top surface of the perforated plate, and an exit groove is recessed at a position of the top surface of the perforated plate below the pressure guiding channel. The inside of the plate is provided with a connecting hole connecting the slot and the outlet slot, and the pressure communication tube is fixed at the bottom end thereof in the slot, the pressure communication hole and the connecting hole The same. The liquid flow measuring device according to claim 5, wherein said pressure guiding passage is disposed in said upper mounting seat in a manner extending in an up and down direction, and said data transmission module is detachable The method is coupled to the upper mounting seat and located beside the upper liquid storage tube; the sensing core slots are formed on the upper mounting seat, corresponding to the periphery of each sensing core slot, on the upper mounting seat a circular coil groove is recessed downwardly from the top surface, each coil groove is concentric with each of the induction core grooves, and a circular coil tube is disposed in each coil groove, and the induction coils are embedded in each coil tube The electromagnetic induction tubes are coupled to the inner surface of each coil tube, the top end of each coil tube is connected to the bottom of the data transmission module, and the magnet is coupled to the bottom of the data transmission module, the pressure sensing The module is coupled to the bottom of the pressure sensing module. The liquid flow measuring device according to claim 4, wherein said liquid storage tube is divided into an upper liquid storage tube and a lower liquid storage tube which are connected in a straight line, and said mounting seat is divided into upper and lower combined. An upper mounting seat and a lower mounting seat, and the upper and lower mounting seats are respectively formed around the bottom of the upper liquid storage tube and around the top of the lower liquid storage tube, and are opened in the middle of the joint between the upper mounting seat and the lower mounting seat a flow regulating groove, wherein the middle of the flow regulating groove communicates with the upper and lower liquid storage tubes, and a perforated plate is embedded in the middle of the flow regulating groove, and the perforated plate separates the flow adjusting groove into upper In the next two parts, a plurality of flow adjustment holes are bored around the perforated plate; An induction core slot is respectively disposed at a position of each of the flow adjustment holes of the mounting seat, each of the induction core slots is a vertical hole, and an inner end is communicated with the flow adjustment groove, and an outer end of each of the induction core slots is closed a magnet is disposed at each end of the mounting seat corresponding to the outer end of each of the sensing core slots. An electromagnetic induction tube and an induction coil surrounding the electromagnetic induction tube are disposed around the slot, and each induction coil is electrically connected to the data transmission module, and the single wafer can control the function of each induction coil in each of the induction core slots. An induction mandrel which is attracted and positioned by each magnet is disposed, and an inner end of each of the induction mandrels forms a tapered portion. The liquid flow measuring device according to claim 8, wherein said pressure guiding passage is formed in said upper mounting seat in a manner extending in an up-and-down direction, and said inner end of said pressure guiding passage a flow adjusting groove is communicated, a slot is recessed in the middle of the top surface of the perforated plate, and an exit groove is recessed at a position of the top surface of the perforated plate below the pressure guiding channel. The inside of the plate is provided with a connecting hole connecting the slot and the outlet slot, and the pressure communication tube is fixed at the bottom end thereof in the slot, the pressure communication hole and the connecting hole The same. The liquid flow measuring device according to claim 8, wherein said pressure guiding passage is disposed in said upper mounting seat in a manner extending in an up and down direction, and said data transmission module is detachable The method is coupled to the upper mounting seat and located beside the upper liquid storage tube; the sensing core slots are formed on the upper mounting seat, corresponding to the periphery of each sensing core slot, on the upper mounting seat a circular coil groove is recessed downwardly from the top surface, each coil groove is concentric with each of the induction core grooves, and a circular coil tube is disposed in each coil groove, and the induction coils are embedded in each coil tube The electromagnetic induction tubes are coupled to the inner surface of each coil tube, the top end of each coil tube is connected to the bottom of the data transmission module, and the magnet is coupled to the bottom of the data transmission module, the pressure sensing The module is coupled to the bottom of the pressure sensing module.

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