Medical Peristaltic Pump

Abstract

The present invention provides a medical peristaltic pump, belonging to the technical field of peristaltic pumps. It comprises a peristaltic pump body, the peristaltic pump body having a front shell formed by a front sheet metal part and a decorative panel, the decorative panel being arranged on the outer side of the front sheet metal part, the front shell being provided with a rotating wheel driven by a motor, a sensor fixing seat and a sensor bracket for installing a pressure sensor being arranged on one side of the rotating wheel; the front shell being arranged in an inclined manner so as to facilitate reading the display screen content on the peristaltic pump body and viewing the rotating wheel rotation and the flow of the pipeline liquid when the height of the peristaltic pump storage position differs greatly from the operator's sight level.

Description

Technical Field

[0001] The invention belongs to the technical field of peristaltic pumps and relates to a medical peristaltic pump. Background Art

[0002] The front operation interface of existing medical peristaltic pumps on the market is all in a 90° vertical direction. When the height of the equipment storage location is greatly different from the operator's line of sight, it is inconvenient to read the display screen content and watch the pump head rotation and the flow of liquid in the silicone tube. Secondly, when the peristaltic pump is working, the rotor is driven by the motor to rotate, and the silicone tube rotates continuously with the rotor. The silicone tube fixing buckle is fixed to the pressure sensor fixing seat. The silicone tube is in a taut and straight state, causing the pressure sensor fixing seat and the sensor holder to be under stress for a long time. Therefore, the pressure sensor fixing seat and the sensor holder are only fixed on the front shell, which will reduce the fatigue strength and product service life to a certain extent. Over time, the front shell is prone to deformation or even rupture. Therefore, there is an urgent need for a peristaltic pump device that is convenient for reading or viewing the display screen content and the flow of liquid in the silicone tube and whose front shell is not easily damaged.

[0003] For example, a Chinese patent discloses a peristaltic pump [application number: 201621359731.6], including a driver and a pump head assembly, the pump head assembly including a base and a front support, the base is connected to the driver, a rotor assembly and a card assembly for installing a hose are installed between the base and the front support, the card assembly can be rotated along a plane perpendicular to the axial direction of the rotor assembly to replace the hose and squeeze the hose onto the surface of the rotor assembly. The utility model has the advantages of fast disassembly and installation, but there are also the above-mentioned problems such as inconvenience in reading the display screen content. Summary of the invention

[0004] The object of the present invention is to provide a medical peristaltic pump in view of the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A medical peristaltic pump comprises a peristaltic pump body, wherein the peristaltic pump body has a front shell body formed by a front sheet metal part and a decorative panel, wherein the decorative panel is arranged on the outer side of the front sheet metal part, wherein the front shell body is provided with a rotating wheel driven by a motor, wherein a sensor fixing seat and a sensor bracket for installing a pressure sensor are arranged on one side of the rotating wheel, wherein the front shell body is arranged at an angle, wherein the sensor fixing seat and the sensor bracket are connected to the front sheet metal part via a reinforced fixing structure, wherein the peristaltic pump body is further provided with an inductive monitoring device, wherein the inductive monitoring device comprises an auxiliary pressure detection mechanism for detecting pipeline pressure when the pressure sensor fails, a flow monitoring mechanism for monitoring flow, and a pipeline leakage monitoring mechanism for preventing liquid leakage in the pipeline from contaminating the equipment.

[0007] In the present invention, the tilted setting of the front housing can facilitate reading the display screen content on the peristaltic pump body and watching the rotation of the rotating wheel and the flow of the pipeline liquid when the height of the peristaltic pump storage position is greatly different from the operator's sight level;

[0008] Secondly, the sensor fixing seat and sensor bracket, which were originally directly fixed on the decorative panel, are fixed to the front sheet metal of the peristaltic pump by strengthening the fixing structure, avoiding direct fixing on the decorative panel, so that the force of the sensor fixing seat and the sensor bracket is distributed on the strengthened fixing structure and the front sheet metal, and the force is more uniform and dispersed, which reduces the local force of the decorative panel, is beneficial to improve the fixing strength of the sensor fixing seat and the sensor bracket, and is also beneficial to extend the service life of the front shell of the product;

[0009] The pressure sensor installed on the sensor fixing seat can detect the pressure in the pipeline, so that the hydraulic pressure in the pipeline is kept within a safe range for infusion of patients. However, when the pressure sensor fails, the auxiliary pressure detection mechanism can detect the pressure change in the pipeline through the change of motor current, and judge whether the pressure sensor fails through the change of pressure. When the pressure change is inconsistent with the pressure sensor value, it means that the pressure sensor fails. The pressure sensor needs to be repaired to prevent medical accidents caused by the failure of the pressure sensor.

[0010] By setting up a flow monitoring mechanism, the amount of physiological saline injected into the human body can be monitored; by using a pipeline leakage monitoring mechanism, it can be detected whether the liquid in the pipeline is leaking.

[0011] In the above-mentioned medical peristaltic pump, the reinforced fixing structure includes a reinforced fixing plate arranged between the decorative panel and the front sheet metal, the sensor fixing seat and the sensor bracket are connected to the outer end surface of the reinforced fixing plate, and the front sheet metal is connected to the inner end surface of the reinforced fixing plate through the supporting connection structure. The sensor fixing seat and the sensor bracket are fixed on the reinforced fixing plate, and the reinforced fixing plate is fixed to the front sheet metal through the supporting connection structure. Through the above-mentioned structure, the force of the sensor fixing seat and the sensor bracket can be distributed on the reinforced fixing plate, the supporting connection structure and the front sheet metal, and the force is more uniform and dispersed, so that the local force of the decorative panel is reduced to prevent the decorative panel from being deformed or damaged; the supporting connection structure can also increase the anti-extrusion strength of the decorative panel.

[0012] In the above-mentioned medical peristaltic pump, the sensor fixing seat and the sensor bracket are respectively fixedly connected to the reinforcing fixing plate by a plurality of screws, the outer end surface of the reinforcing fixing plate abuts against the inner end surface of the decorative panel, and the decorative panel is provided with a plurality of screw holes corresponding to the screws. The screw holes can be used for passing the screws connecting the sensor fixing seat and the sensor bracket to the reinforcing fixing plate, and when the sensor fixing seat and the sensor bracket are subjected to force, the force at the screws will not be transmitted to the decorative panel, thereby better protecting the decorative panel.

[0013] In the above-mentioned medical peristaltic pump, the supporting connection structure includes a plurality of support rods fixed on the inner end surface of the reinforcing fixing plate, the ends of the support rods abut against the front sheet metal, the support rods and the front sheet metal are fixed by screws, and the support rods are perpendicular to the reinforcing fixing plate and the front sheet metal.

[0014] The support rod and the front sheet metal are abutted against each other, so that when the sensor fixing seat and the sensor bracket are squeezed, the front sheet metal can bear the extrusion force, thereby preventing the decorative panel from deformation. The support rod is perpendicular to the reinforcing fixing plate and the front sheet metal, so that the extrusion force exerted on the sensor fixing seat and the sensor bracket can be directly transmitted to the front sheet metal. Secondly, if the angle between the support rod and the front sheet metal and the reinforcing fixing plate is not perpendicular, it is easy to cause the support rod to break when subjected to force.

[0015] In the above-mentioned medical peristaltic pump, the inner end surface of the decorative panel is provided with six horizontally arranged No. 1 fixing rods, and the six No. 1 fixing rods are distributed in a rectangular shape. The front sheet metal is provided with six No. 2 fixing rods that are compatible with the No. 1 fixing rods, and the No. 1 fixing rods are inserted into the No. 2 fixing rods and are detachably connected to the No. 2 fixing rods; the edge of the decorative panel is also provided with a horizontally or vertically bent rectangular annular outer edge, the bottom of the rectangular annular outer edge is abutted against the bottom of the front sheet metal, and the rectangular annular outer edge is abutted against the outer side of the front sheet metal.

[0016] Since the decorative panel is only subjected to force in the normal direction perpendicular to the inclined surface and is not subjected to force in the shear force direction of the motor rotation, the inclined arrangement of the decorative panel and the front sheet metal can also protect the front shell from being easily deformed or cracked, and the horizontally arranged No. 1 fixing rod and No. 2 fixing rod, together with the support rod perpendicular to the front sheet metal, can better disperse the pressure when the decorative panel is squeezed; the rectangular ring-shaped outer edge at the edge of the decorative panel can increase the overall deformation resistance of the decorative panel; secondly, the rectangular ring-shaped outer edge rests against the outside of the front sheet metal and can support the decorative panel through the front sheet metal when the decorative panel is subjected to forces in all directions, thereby providing all-round protection for the decorative panel.

[0017] In the above-mentioned medical peristaltic pump, the auxiliary pressure detection mechanism includes a current detection component, which is arranged in the power supply circuit of the motor. The current detection component includes a current detection circuit. The current detection circuit is connected with a sampling resistor, an operational amplifier and an analog-to-digital converter through wires. The sampling resistor is connected to a microcontroller unit arranged in the peristaltic pump body through the operational amplifier and the analog-to-digital converter.

[0018] When the pipeline pressure increases, the motor current will increase accordingly. At the same speed, as the pressure increases, the motor current increases. By detecting the current value in the power supply circuit of the motor through the current detection component, the change of the pressure in the pipeline can be determined;

[0019] Specifically, after the current in the power supply circuit is sampled by the sampling resistor, the current value is converted into binary numbers through the operational amplifier and analog-to-digital converter. The microcontroller unit then calculates the current value and compares it with the pressure sensor to determine whether the pressure sensor has failed.

[0020] In the above-mentioned medical peristaltic pump, the flow monitoring mechanism comprises:

[0021] A signal transmitter, which is arranged inside the rotating wheel;

[0022] A signal receiver is arranged on the motor and connected to a micro control unit arranged in the peristaltic pump body.

[0023] The rotating wheel drives the signal transmitter to rotate. When the rotating wheel rotates to the receiving range of the signal transmitter and the signal receiver, the signal receiver completes a reception. The number of times the signal receiver completes signal reception within a certain period of time can be used to calculate the number of rotations of the rotating wheel, and then the amount of physiological saline flowing into the human body can be calculated through the micro control unit.

[0024] In the above-mentioned medical peristaltic pump, the signal transmitter includes a magnet; and the signal receiver includes a speed sensor.

[0025] The speed sensor can sense the magnet information and send it to the microcontroller unit, which can calculate the number of revolutions of the roller and further deduce the amount of saline solution flowing into the human body.

[0026] In the above-mentioned medical peristaltic pump, a signal transmission channel is also provided on the front housing, which can shield the range of the speed sensor receiving magnet information, improve calculation accuracy, and the speed sensor can receive magnet information only when the magnet and the signal transmission channel are aligned.

[0027] In the above-mentioned medical peristaltic pump, the pipeline leakage monitoring mechanism includes a liquid sensor, which is arranged on the sensor holder and connected to the micro control unit arranged in the peristaltic pump body. The pipeline leakage monitoring mechanism also includes an alarm mechanism connected to the micro control unit.

[0028] After liquid leakage occurs, the liquid sensor can transmit a signal to the microcontroller unit, and the microcontroller unit can control the alarm mechanism to work to remind medical staff. The microcontroller unit can also control the peristaltic pump to stop working when liquid leaks.

[0029] Compared with the prior art, the advantages of the present invention are:

[0030] 1. The tilted setting of the front shell can facilitate reading the display screen content on the peristaltic pump body and watching the rotation of the rotor and the flow of liquid in the pipeline when the height of the peristaltic pump storage position is greatly different from the operator's line of sight.

[0031] 2. The sensor fixing seat and sensor bracket originally directly fixed on the decorative panel are fixed to the front sheet metal of the peristaltic pump by strengthening the fixing structure to avoid direct fixing on the decorative panel. The force of the sensor fixing seat and sensor bracket is distributed on the strengthened fixing structure and the front sheet metal, and the force is more uniform and dispersed, which reduces the local force of the decorative panel, is beneficial to improve the fixing strength of the sensor fixing seat and sensor bracket, and is also beneficial to extend the service life of the front shell of the product.

[0032] 3. The pressure sensor installed on the sensor fixing base can detect the pressure in the pipeline, so that the hydraulic pressure in the pipeline is maintained within a safe range for infusion of patients. However, when the pressure sensor fails, the auxiliary pressure detection mechanism can detect the pressure change in the pipeline through the change of motor current, and judge whether the pressure sensor has failed by the change of pressure. When the pressure change is inconsistent with the pressure sensor value, it means that the pressure sensor has failed. The pressure sensor needs to be repaired to prevent medical accidents caused by the failure of the pressure sensor.

[0033] 4. When a medical peristaltic pump injects saline into the human body, it needs to be quantitatively input, otherwise it will cause water poisoning and endanger the patient's life safety. By setting up a flow monitoring mechanism, the amount of saline injected into the human body can be monitored; since the silicone membrane on the pipeline and the pipeline in contact with the rotor are easily damaged after repeated use, leakage of saline will not only corrode the host and other equipment, but also may cause the saline in the pipeline to be contaminated, endangering the patient's safety; the pipeline leakage monitoring mechanism can detect whether the liquid in the pipeline is leaking.

[0034] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 It is a three-dimensional picture of the peristaltic pump body;

[0037] Figure 3 It is a partial three-dimensional diagram of the peristaltic pump body;

[0038] Figure 4 It is a structural diagram of the strengthening fixed structure;

[0039] Figure 5 It is a cross-sectional schematic diagram of the reinforced fixed structure;

[0040] Figure 6 is the circuit diagram of the current detection circuit;

[0041] Figure 7 It is a framework diagram of the induction monitoring device;

[0042] Figure 8 is a cross-sectional schematic diagram of the flow monitoring mechanism;

[0043] Fig. 9 yes Figure 8 A magnified schematic diagram of center A.

[0044] In the figure, a peristaltic pump body 1, a front sheet metal part 2, a decorative panel 3, a front shell 4, a motor 5, a rotor 6, a pressure sensor 7, a sensor fixing seat 8, a sensor bracket 9, a reinforced fixing structure 10, an induction monitoring device 11, a pipeline 12, an auxiliary pressure detection mechanism 13, a flow monitoring mechanism 14, a pipeline leakage monitoring mechanism 15, a reinforced fixing plate 16, a supporting connection structure 17, a screw hole 18, a support rod 19, a No. 1 fixing rod 20, a No. 2 fixing rod 21, a rectangular ring outer edge 22, a current detection component 23, a sampling resistor 24, an operational amplifier 25, an analog-to-digital converter 26, a microcontroller unit 27, a signal transmitter 28, a signal receiver 29, a signal transmission channel 30, a liquid sensor 31, an alarm mechanism 32, an annular peristaltic channel 33, a No. 1 arc groove 34, and a No. 2 arc groove 35. DETAILED DESCRIPTION

[0045] like Figure 1-Figure 6As shown, a medical peristaltic pump comprises a peristaltic pump body 1, the peristaltic pump body 1 has a front shell 4 formed by a front sheet metal part 2 and a decorative panel 3, the decorative panel 3 is arranged on the outer side of the front sheet metal part 2, the front shell 4 is provided with a rotating wheel 6 driven by a motor 5, one side of the rotating wheel 6 is provided with a sensor fixing seat 8 and a sensor bracket 9 for installing a pressure sensor 7, the front shell 4 is tilted, the sensor fixing seat 8 and the sensor bracket 9 are connected to the front sheet metal part 2 through a reinforced fixing structure 10, and the peristaltic pump body 1 is also provided with an inductive monitoring device 11, the inductive monitoring device 11 comprises an auxiliary pressure detection mechanism 13 for detecting the pressure of a pipeline 12 when the pressure sensor 7 fails, a flow monitoring mechanism 14 for monitoring the flow rate, and a pipeline leakage monitoring mechanism 15 for preventing liquid in the pipeline 12 from leaking and contaminating the equipment.

[0046] In the present invention, the front housing 4 is tilted so that when the height of the peristaltic pump storage position is greatly different from the operator's sight level, it is convenient to read the display screen content on the peristaltic pump body and watch the rotation of the wheel and the flow of the pipeline liquid;

[0047] Secondly, the sensor fixing seat 8 and the sensor bracket 9 originally directly fixed on the decorative panel are fixed to the front sheet metal of the peristaltic pump by strengthening the fixing structure, avoiding direct fixing on the decorative panel, so that the force of the sensor fixing seat and the sensor bracket is distributed on the strengthening fixing structure and the front sheet metal, and the force is more uniform and dispersed, which reduces the local force of the decorative panel, is beneficial to improve the fixing strength of the sensor fixing seat and the sensor bracket, and is also beneficial to prolong the service life of the front shell part of the product;

[0048] The pressure sensor arranged on the sensor fixing seat can detect the pressure in the pipeline, so that the hydraulic pressure in the pipeline is kept within a safe range for infusion of the patient. However, when the pressure sensor fails, the auxiliary pressure detection mechanism 13 can detect the pressure change in the pipeline through the change of the motor current, and judge whether the pressure sensor fails through the change of pressure. When the pressure change is inconsistent with the pressure sensor value, it means that the pressure sensor fails, and the pressure sensor needs to be repaired to prevent medical accidents caused by the failure of the pressure sensor.

[0049] When a medical peristaltic pump injects saline into the human body, quantitative input is required, otherwise it will cause water poisoning and endanger the patient's life safety. By setting up a flow monitoring mechanism, the amount of saline injected into the human body can be monitored; since the silicone membrane on the pipeline and the pipeline in contact with the rotor are easily damaged after repeated use, leakage of saline will not only corrode the host and other equipment, but also may cause the saline in the pipeline to be contaminated, endangering the patient's safety; the pipeline leakage monitoring mechanism 15 can detect whether the liquid in the pipeline is leaking.

[0050] Specifically, combined with Figure 2-Figure 5 As shown, the reinforcing fixing structure 10 includes a reinforcing fixing plate 16 arranged between the decorative panel 3 and the front sheet metal 2, the sensor fixing seat 8 and the sensor bracket 9 are connected to the outer end surface of the reinforcing fixing plate 16, the front sheet metal 2 is connected to the inner end surface of the reinforcing fixing plate 16 through a supporting connection structure 17, the sensor fixing seat 8 and the sensor bracket 9 are respectively fixed to the reinforcing fixing plate 16 by a plurality of screws, the outer end surface of the reinforcing fixing plate 16 abuts against the inner end surface of the decorative panel 3, and the decorative panel 3 is provided with a plurality of screw holes 18 corresponding to the screws.

[0051] The sensor fixing seat 8 and the sensor bracket 9 are fixed on the reinforcing fixing plate 16, and the reinforcing fixing plate is fixed on the front sheet metal through the supporting connection structure. Through the above structure, the force of the sensor fixing seat and the sensor bracket can be distributed on the reinforcing fixing plate, the supporting connection structure and the front sheet metal, and the force is more uniform and dispersed, so that the local force of the decorative panel is reduced to prevent the decorative panel from being deformed or damaged; the supporting connection structure can also increase the anti-extrusion strength of the decorative panel, and the screw holes can be used to connect the sensor fixing seat 8 and the sensor bracket 9 with the reinforcing fixing plate. The force at the screw will not be transmitted to the decorative panel when the sensor fixing seat 8 and the sensor bracket 9 are subjected to force, thereby better protecting the decorative panel.

[0052] Specifically, combined with Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, the supporting connection structure 17 includes a plurality of support rods 19 fixed to the inner end surface of the reinforcing fixing plate 16, the ends of the support rods 19 abut against the front sheet metal 2, the support rods 19 and the front sheet metal 2 are fixed by screws, and the support rods 19 are perpendicular to the reinforcing fixing plate 16 and the front sheet metal 2.

[0053] The support rod 19 and the front sheet metal are abutted against each other, so that when the sensor fixing seat 8 and the sensor bracket 9 are squeezed, the front sheet metal can bear the squeezing force, thereby preventing the decorative panel from deforming. The support rod 19 is perpendicular to the reinforcing fixing plate 16 and the front sheet metal 2, so that the squeezing force exerted on the sensor fixing seat 8 and the sensor bracket 9 can be directly transmitted to the front sheet metal. Secondly, if the angle between the support rod and the front sheet metal and the reinforcing fixing plate is not perpendicular, it is easy to cause the support rod to break when subjected to force.

[0054] Specifically, combined with Figure 4 and Figure 5As shown, six horizontally arranged No. 1 fixing rods 20 are provided on the inner end surface of the decorative panel 3, and the six No. 1 fixing rods 20 are distributed in a rectangular shape. Six No. 2 fixing rods 21 compatible with the No. 1 fixing rods 20 are provided on the front sheet metal 2, and the No. 1 fixing rods 20 are inserted into the No. 2 fixing rods 21 and are detachably connected to the No. 2 fixing rods 21; the edge of the decorative panel 3 is also provided with a horizontally or vertically bent rectangular annular outer edge 22, the bottom of the rectangular annular outer edge 22 is against the bottom of the front sheet metal 2, and the rectangular annular outer edge 22 is against the outer side of the front sheet metal 2.

[0055] Since the decorative panel is only subjected to force in the normal direction perpendicular to the inclined surface and is not subjected to force in the shear force direction of the motor rotation, the inclined arrangement of the decorative panel and the front sheet metal can also protect the front shell from being easily deformed or broken, and the horizontally arranged No. 1 fixing rod and No. 2 fixing rod, together with the support rod perpendicular to the front sheet metal, can better disperse the pressure when the decorative panel is squeezed; the rectangular annular outer edge 22 at the edge of the decorative panel 3 can increase the overall deformation resistance of the decorative panel, and secondly, the rectangular annular outer edge 22 abuts against the outer side of the front sheet metal 2, so that the decorative panel can be supported through the front sheet metal when the decorative panel is subjected to forces in various directions, thereby providing all-round protection for the decorative panel.

[0056] Specifically, combined with Figure 4 , Figure 6 and Figure 7 As shown, the auxiliary pressure detection mechanism 13 includes a current detection component 23, which is arranged in the power supply circuit of the motor 5. The current detection component 23 includes a current detection circuit, in which a sampling resistor 24, an operational amplifier 25 and an analog-to-digital converter 26 are connected through wires. The sampling resistor 24 is connected to a micro control unit 27 arranged in the peristaltic pump body 1 through the operational amplifier 25 and the analog-to-digital converter 26.

[0057] When the pipeline pressure increases, the motor current will increase accordingly. At the same speed, as the pressure increases, the motor current increases. By detecting the current value in the power supply circuit of the motor through the current detection component, the change of the pressure in the pipeline can be determined;

[0058] Specifically, after the current in the power supply circuit is sampled by the sampling resistor 24, the current value is converted into a binary number through the operational amplifier 25 and the analog-to-digital converter 26, and then the microcontroller unit calculates the current value and compares it with the pressure sensor to determine whether the pressure sensor has failed.

[0059] Specifically, combined with Figure 7-Figure 9 As shown, the flow monitoring mechanism 14 includes:

[0060] A signal transmitter 28 is arranged on the inner side of the rotating wheel 6; a signal receiver 29 is arranged on the motor 5 and connected to a micro control unit 27 arranged in the peristaltic pump body 1, and the signal transmitter 28 includes a magnet; the signal receiver 29 includes a speed sensor, and a signal transmission channel 30 is also provided on the front shell 4.

[0061] The rotating wheel drives the signal transmitter to rotate. When the rotating wheel rotates to the receiving range of the signal transmitter and the signal receiver, the signal receiver completes a reception. The number of rotations of the rotating wheel can be calculated by the number of times the signal receiver completes signal reception within a certain period of time, and then the amount of saline flowing into the human body can be calculated by the micro control unit. The speed sensor can sense the magnet information and send it to the micro control unit, and the number of rotations of the roller can be calculated, and then the amount of saline flowing into the human body can be calculated. The front shell 4 can shield the range of the speed sensor to receive the magnet information, which can improve the calculation accuracy. The speed sensor can only receive the magnet information when the magnet and the signal transmission channel 30 are aligned.

[0062] Specifically, combined with Figure 1-Figure 4 As shown, the pipeline leakage monitoring mechanism 15 includes a liquid sensor 31, which is arranged on the sensor holder 9 and connected to the micro control unit 27 arranged in the peristaltic pump body 1. The pipeline leakage monitoring mechanism 15 also includes an alarm mechanism 32 connected to the micro control unit 27.

[0063] After liquid leakage occurs, the liquid sensor can transmit a signal to the microcontroller unit, and the microcontroller unit can control the alarm mechanism to work to remind medical staff. The microcontroller unit can also control the peristaltic pump to stop working when liquid leaks.

[0064] Preferably, the alarm mechanism 32 includes a sound alarm, a light alarm or a sound and light alarm.

[0065] Specifically, the rotating wheel 6 is provided with an inwardly recessed annular peristaltic channel 33, and the annular peristaltic channel 33 is provided with a plurality of inwardly recessed No. 1 arc grooves 34 along the circumferential direction. The side of the sensor fixing seat 8 has a No. 2 arc groove 35 adapted to the rotating wheel 6.

[0066] The working principle of the present invention is as follows: the front housing 4 is tilted so that it is convenient to read the display screen content on the peristaltic pump body and watch the rotation of the rotating wheel and the flow of the pipeline liquid when the height of the peristaltic pump storage position is greatly different from the height of the operator's sight level. Secondly, the sensor fixing seat 8 and the sensor bracket 9 originally directly fixed on the decorative panel are fixed to the front sheet metal of the peristaltic pump by strengthening the fixing structure, avoiding direct fixing on the decorative panel, so that the force of the sensor fixing seat and the sensor bracket is distributed on the strengthening fixing structure and the front sheet metal, the force is more uniform and dispersed, and the local force of the decorative panel is reduced, which is beneficial to improve the fixing strength of the sensor fixing seat and the sensor bracket, and is also beneficial to prolonging the service life of the front shell part of the product;

[0067] The pressure sensor arranged on the sensor fixing seat can detect the pressure in the pipeline, so that the hydraulic pressure in the pipeline is kept within a safe range for infusion of the patient. However, when the pressure sensor fails, the auxiliary pressure detection mechanism 13 can detect the pressure change in the pipeline through the change of the motor current, and judge whether the pressure sensor fails by the change of the pressure. When the pressure change is inconsistent with the pressure sensor value, it means that the pressure sensor fails, and the pressure sensor needs to be repaired to prevent medical accidents caused by the failure of the pressure sensor. By setting a flow monitoring mechanism, the amount of physiological saline injected into the human body can be monitored, and the pipeline leakage monitoring mechanism 15 can detect whether the liquid in the pipeline leaks;

[0068] The sensor fixing seat 8 and the sensor bracket 9 are fixed on the reinforcing fixing plate 16, and the reinforcing fixing plate is fixed on the front sheet metal by the supporting connection structure. Through the above structure, the force of the sensor fixing seat and the sensor bracket can be distributed on the reinforcing fixing plate, the supporting connection structure and the front sheet metal, and the force is more uniform and dispersed, so that the local force of the decorative panel is reduced to prevent the decorative panel from being deformed or damaged; the supporting connection structure can also increase the anti-extrusion strength of the decorative panel, and the screw holes can be used to connect the sensor fixing seat 8 and the sensor bracket 9 with the reinforcing fixing plate. When the sensor fixing seat 8 and the sensor bracket 9 are subjected to force, the force at the screw will not be transmitted to the decorative panel, so as to better protect the decorative panel, and the support rod 19 and the front sheet metal can be abutted against the sensor fixing seat 8 and the sensor bracket. When 9 is squeezed, the front sheet metal bears the squeezing force, thereby preventing the decorative panel from deforming. The support rod 19 is perpendicular to the reinforcing fixing plate 16 and the front sheet metal 2, which can directly transmit the squeezing force on the sensor fixing seat 8 and the sensor bracket 9 to the front sheet metal. Secondly, if the angle between the support rod and the front sheet metal and the reinforcing fixing plate is not perpendicular, it is easy to cause the support rod to break when subjected to force. The horizontally arranged No. 1 fixing rod and No. 2 fixing rod cooperate with the support rod perpendicular to the front sheet metal to better disperse the pressure when the decorative panel is squeezed. The rectangular annular outer edge 22 at the edge of the decorative panel 3 can increase the overall anti-deformation strength of the decorative panel. Secondly, the rectangular annular outer edge 22 abuts against the outer side of the front sheet metal 2, which can support the decorative panel through the front sheet metal when the decorative panel is subjected to forces in all directions, thereby providing all-round protection for the decorative panel.When the pipeline pressure increases, the motor current will increase accordingly. At the same speed, as the pressure increases, the motor current increases. By detecting the current value in the power supply circuit of the motor through the current detection component, the change of the pressure in the pipeline can be determined. After the current in the power supply circuit is sampled by the sampling resistor 24, the current value is converted into a binary number through the operational amplifier 25 and the analog-to-digital converter 26. The microcontroller calculates the current value and compares it with the pressure sensor to determine whether the pressure sensor fails. The wheel drives the signal transmitter to rotate. When the wheel rotates to the receiving range of the signal transmitter and the signal receiver, the signal receiver completes a reception. By completing the signal within a certain period of time, the signal receiver completes the signal. The number of times received can calculate the number of revolutions of the rotating wheel, and then the amount of saline flowing into the human body can be calculated through the micro control unit. The speed sensor can sense the magnet information and send it to the micro control unit, and the number of revolutions of the roller can be calculated, and then the amount of saline flowing into the human body can be calculated. The front shell 4 can shield the range of the speed sensor receiving the magnet information, and can improve the calculation accuracy. The speed sensor can only receive the magnet information when the magnet and the signal transmission channel 30 are aligned. After liquid leakage occurs, the liquid sensor can transmit the signal to the micro control unit, and the micro control unit can control the alarm mechanism to work to remind medical staff. The micro control unit can also control the peristaltic pump to stop working when liquid leaks;

[0069] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0070] Although this article uses the peristaltic pump body 1, front sheet metal 2, decorative panel 3, front shell 4, motor 5, rotor 6, pressure sensor 7, sensor fixing seat 8, sensor bracket 9, reinforced fixing structure 10, induction monitoring device 11, pipeline 12, auxiliary pressure detection mechanism 13, flow monitoring mechanism 14, pipeline leakage monitoring mechanism 15, reinforced fixing plate 16, supporting connection structure 17, screw hole 18, support rod 19, No. 1 fixing rod 20, No. 2 fixing rod 21, rectangular annular outer edge 22, current detection component 23, sampling resistor 24, operational amplifier 25, analog-to-digital converter 26, micro control unit 27, signal transmitter 28, signal receiver 29, signal transmission channel 30, liquid sensor 31, alarm mechanism 32, annular peristaltic channel 33, No. 1 arc groove 34, No. 2 arc groove 35, etc. more frequently, these terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A medical peristaltic pump, comprising a peristaltic pump body (1), the peristaltic pump body (1) having a front housing (4) formed by a front sheet metal part (2) and a decorative panel (3), the decorative panel (3) being arranged on the outer side of the front sheet metal part (2), the front housing (4) being provided with a rotating wheel (6) driven by a motor (5), a sensor fixing seat (8) for mounting a pressure sensor (7) and a sensor bracket (9) being arranged on one side of the rotating wheel (6), characterized in that: The front housing (4) is tilted, the sensor fixing seat (8) and the sensor bracket (9) are connected to the front sheet metal (2) via a reinforced fixing structure (10), and the peristaltic pump body (1) is also provided with a sensing monitoring device (11), the sensing monitoring device (11) comprising an auxiliary pressure detection mechanism (13) for detecting the pressure of the pipeline (12) when the pressure sensor (7) fails, a flow monitoring mechanism (14) for monitoring the flow, and a pipeline leakage monitoring mechanism (15) for preventing liquid in the pipeline (12) from leaking and contaminating the equipment; The auxiliary pressure detection mechanism (13) comprises a current detection component (23), which is arranged in the power supply circuit of the motor (5). The current detection component (23) comprises a current detection circuit, in which a sampling resistor (24), an operational amplifier (25) and an analog-to-digital converter (26) are connected via wires. The sampling resistor (24) is connected to a microcontroller unit (27) arranged in the peristaltic pump body (1) via the operational amplifier (25) and the analog-to-digital converter (26). The pipeline leakage monitoring mechanism (15) comprises a liquid sensor (31), the liquid sensor (31) being arranged on a sensor holder (9) and connected to a micro control unit (27) arranged in a peristaltic pump body (1), and the pipeline leakage monitoring mechanism (15) further comprises an alarm mechanism (32) connected to the micro control unit (27).

2. The medical peristaltic pump according to claim 1, characterized in that: The reinforcing fixing structure (10) comprises a reinforcing fixing plate (16) arranged between the decorative panel (3) and the front sheet metal component (2); the sensor fixing seat (8) and the sensor bracket (9) are connected to the outer end surface of the reinforcing fixing plate (16); and the front sheet metal component (2) is connected to the inner end surface of the reinforcing fixing plate (16) via a supporting connection structure (17).

3. The medical peristaltic pump according to claim 2, characterized in that: The sensor fixing seat (8) and the sensor bracket (9) are respectively fixedly connected to the reinforcing fixing plate (16) by means of a plurality of screws. The outer end surface of the reinforcing fixing plate (16) abuts against the inner end surface of the decorative panel (3). The decorative panel (3) is provided with a plurality of screw holes (18) corresponding to the screws.

4. The medical peristaltic pump according to claim 2, characterized in that: The supporting connection structure (17) comprises a plurality of supporting rods (19) fixed to the inner end surface of the reinforcing fixing plate (16), the ends of the supporting rods (19) abutting against the front sheet metal part (2), the supporting rods (19) and the front sheet metal part (2) being fixed by screws, and the supporting rods (19) being perpendicular to the reinforcing fixing plate (16) and the front sheet metal part (2).

5. The medical peristaltic pump according to any one of claims 1 to 4, characterized in that: The inner end surface of the decorative panel (3) is provided with six horizontally arranged No. 1 fixing rods (20), and the six No. 1 fixing rods (20) are distributed in a rectangular shape. The front sheet metal component (2) is provided with six No. 2 fixing rods (21) that are compatible with the No. 1 fixing rods (20), and the No. 1 fixing rods (20) are inserted into the No. 2 fixing rods (21) and are detachably connected to the No. 2 fixing rods (21). The decorative panel (3) is also provided with a horizontally or vertically bent rectangular annular outer edge (22) at the edge, and the bottom of the rectangular annular outer edge (22) abuts against the bottom of the front sheet metal component (2), and the rectangular annular outer edge (22) abuts against the outer side of the front sheet metal component (2).

6. The medical peristaltic pump according to any one of claims 1 to 4, characterized in that: The flow monitoring mechanism (14) comprises: a signal transmitter (28), the signal transmitter (28) being arranged on the inner side of the rotating wheel (6); A signal receiver (29), wherein the signal receiver (29) is arranged on the motor (5) and connected to a micro control unit (27) arranged in the peristaltic pump body (1).

7. The medical peristaltic pump according to claim 6, characterized in that: The signal transmitter (28) includes a magnet; the signal receiver (29) includes a speed sensor.

8. The medical peristaltic pump according to claim 7, characterized in that: The front housing (4) is also provided with a signal transmission channel (30).

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