Infusion alarm and infusion bag

Abstract

The present invention provides an infusion alarm and an infusion bag, comprising: a communication interface connected to a piezoelectric sensor is provided on a main unit; the piezoelectric sensor is used for detecting a change in surface tension in the infusion bag to obtain a pressure change signal, and transmitting the pressure change signal to the main unit; the main unit is used for processing the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than a preset liquid level. The infusion alarm and the infusion bag provided by the present invention enable medical staff to replace the infusion bag for the corresponding patient as soon as possible, without the need for medical staff to constantly pay attention to the liquid level state of the patient's infusion bag, thereby improving the work efficiency of medical staff.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion alarms, and particularly to an infusion alarm and an infusion bag. Background Art

[0002] Infusion, also known as drip infusion or intravenous drip, is a commonly used medical treatment method, in which a large dose of injectable solution is input into the patient's body through intravenous drip. Generally, the infusion time is relatively long, and it is required that the height of the infusion bag is higher than the blood pressure of the human heart, so the patient receiving the infusion needs to sit or lie down.

[0003] In the prior art, the patient receiving the infusion himself, the nursing worker or the relative needs to constantly monitor the remaining volume of the infusion bag and call the medical staff before the remaining volume of the infusion bag runs out. Often, due to distraction, the time is missed, resulting in situations such as blood backflow during the infusion process, endangering the health of the patient receiving the infusion, and seriously endangering life safety, with poor user experience. Summary of the Invention

[0004] In view of this, the present invention provides an infusion alarm and an infusion bag, enabling medical staff to replace the infusion bag for the corresponding patient as soon as possible, without the need for medical staff to constantly monitor the liquid level state of the patient's infusion bag, and improving the work efficiency of medical staff.

[0005] The present invention provides an infusion alarm, which includes: a main unit, on which a communication interface connected to a piezoelectric sensor is provided; the piezoelectric sensor is used to detect the change in surface tension in the infusion bag to obtain a pressure change signal, and transmit the pressure change signal to the main unit; the main unit is used to process the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than a preset liquid level.

[0006] Specifically, a hook for hanging the infusion bag is provided at the lower part of the main unit, and the communication interface is arranged on the contact surface between the hook and the hanging ring of the infusion bag and is connected to the hanging ring of the infusion bag.

[0007] Specifically, the main unit includes a central processing module, a power supply module and an alarm module. The central processing module is respectively connected to the power supply module and the alarm module, and the central processing module is also communicatively connected to a monitoring platform.

[0008] Specifically, it further includes a piezoelectric sensor, which is connected to the communication interface, and the piezoelectric sensor is arranged on the outer surface of the infusion bag by means of pasting or integration.

[0009] Specifically, the piezoelectric sensor is arranged on the lower part of the outer surface of the infusion bag by means of pasting, and the signal output end of the piezoelectric sensor is connected to the communication interface through a connecting wire.

[0010] Specifically, the piezoelectric sensor is integrated on the lower part of the outer surface of the infusion bag by an integrated method. The signal output end of the piezoelectric sensor is arranged on the top of the hanging ring of the infusion bag and is directly connected to the communication interface in the host. The wire between the signal output end of the piezoelectric sensor and the piezoelectric sensor is arranged in the interlayer of the infusion bag.

[0011] Specifically, the number of the piezoelectric sensors is two groups. The two groups of piezoelectric sensors are the first piezoelectric sensor and the second piezoelectric sensor. A part of the first piezoelectric sensor is arranged in the vertical direction, and the second piezoelectric sensor is arranged in the horizontal direction. A part of the first piezoelectric sensor in the length direction is integrated on the hard part in the bottom of the infusion bag, and another part of the first piezoelectric sensor in the length direction is integrated on the soft outer membrane part in the lower part of the infusion bag. The second piezoelectric sensor is integrated in the horizontal direction above the top of the first piezoelectric sensor in the infusion bag.

[0012] Specifically, the second piezoelectric sensor is in multiple paths. The multiple paths of the second piezoelectric sensors are integrated in parallel above the top of the first piezoelectric sensor in the infusion bag.

[0013] Specifically, a part of the piezoelectric sensor in the length direction is arranged on the hard part in the bottom of the infusion bag, and another part of the piezoelectric sensor in the length direction is arranged on the soft outer membrane part in the lower part of the infusion bag.

[0014] Specifically, the piezoelectric sensor is a piezoresistive elliptical piezoelectric sensor or a piezoresistive wire.

[0015] The present invention also provides an infusion bag, including a piezoelectric sensor for acquiring the surface tension in the infusion bag, and the piezoelectric sensor is arranged on the surface of the infusion bag.

[0016] Specifically, the piezoelectric sensor is used to detect the change of the surface tension of the infusion bag to obtain a piezovariable signal, and transmit the piezovariable signal to the host connected to the piezoelectric sensor. The host is used to process the piezovariable signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than the preset liquid level.

[0017] Specifically, the piezoelectric sensor is integrated on the lower part of the outer surface of the infusion bag by an integrated method. The signal output end of the piezoelectric sensor is arranged on the contact surface between the top of the hanging ring of the infusion bag and the host hook, and is connected to the communication interface in the host.

[0018] Specifically, the wire between the signal output end of the piezoelectric sensor and the piezoelectric sensor is arranged in the interlayer of the infusion bag.

[0019] Specifically, the number of the piezoelectric sensors is two groups. The two groups of piezoelectric sensors are a first piezoelectric sensor and a second piezoelectric sensor. A part of the first piezoelectric sensor is arranged in the vertical direction, and the second piezoelectric sensor is arranged in the transverse direction. A part of the first piezoelectric sensor along the length direction is integrated on the rigid part at the bottom of the infusion bag, and another part of the first piezoelectric sensor along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag. The second piezoelectric sensor is integrated in the transverse direction above the top of the first piezoelectric sensor in the infusion bag.

[0020] Specifically, the second piezoelectric sensor has multiple channels, and multiple channels of the second piezoelectric sensor are integrally arranged in parallel above the top of the first piezoelectric sensor in the infusion bag.

[0021] Specifically, the signal output end of the piezoelectric sensor is connected to the communication interface of the host through a connecting wire.

[0022] Specifically, a part of the piezoelectric sensor along the length direction is integrated on the rigid part at the bottom of the infusion bag, and another part of the piezoelectric sensor along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag.

[0023] Specifically, for the infusion alarm and the infusion bag provided in this embodiment, by providing a communication interface connected to the piezoelectric sensor on the host, the piezoelectric sensor is used to detect the change of the surface tension in the infusion bag to obtain a pressure change signal, and transmit the pressure change signal to the host. The host is used to process the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than the preset liquid level, so that medical staff can replace the infusion bag for the corresponding patient as soon as possible, without the need for medical staff to constantly pay attention to the liquid level state of the patient's infusion bag, improving the work efficiency of medical staff.

[0024] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the drawings, is described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural block diagram of the infusion alarm according to the first embodiment of the present invention;

[0026] Figure 2 It is a structural block diagram of the infusion alarm according to the second embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the infusion alarm according to the third embodiment of the present invention;

[0028] Figure 4 is Figure 3 The top - view partial structural schematic diagram of the infusion bag in the state of being filled with liquid medicine in

[0029] Figure 5 is Figure 3 The top - view partial structural schematic diagram of the infusion bag in the state after the infusion is completed in

[0030] Figure 6 The structural schematic diagram of the infusion alarm of the fourth embodiment of the present invention;

[0031] Figure 7 The structural schematic diagram of the infusion alarm of the fifth embodiment of the present invention;

[0032] Figure 8 The structural schematic diagram of the infusion alarm of the sixth embodiment of the present invention;

[0033] Figure 9 is the structural schematic diagram of the piezoelectric sensor in the infusion alarm;

[0034] Figure 10 The structural block diagram of the infusion bag of the seventh embodiment of the present invention;

[0035] Figure 11 is Figure 10 The structural block diagram of the connection between the piezoelectric sensor and the host in Detailed implementation manners

[0036] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the present invention is described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0037] Figure 1 is the structural block diagram of the infusion alarm 100 of the first embodiment of the present invention. As Figure 1 shown, the infusion alarm 100 of this embodiment includes: a host 110. A communication interface connected to the piezoelectric sensor is provided on the host 110.

[0038] Furthermore, in one implementation manner, the infusion alarm 100 further includes a piezoelectric sensor 120. The piezoelectric sensor 120 is connected to the communication interface of the host 110. Specifically, the host 110 is electrically connected to the piezoelectric sensor 120, calculates the surface tension of the infusion bag according to the resistance value of the piezoelectric sensor, and receives the pressure - change signal corresponding to the surface tension in the infusion bag collected by the piezoelectric sensor 120.

[0039] Specifically, in one embodiment, the host 110 can be, but is not limited to, hung on an infusion stand. For example, in other embodiments, the host 110 can also be directly integrated into the infusion stand. Specifically, in this embodiment, the piezoelectric sensor 120 is a passive device. Specifically, in one embodiment, the piezoelectric sensor 120 can be pasted on the outer surface of the infusion bag in a patch manner. For example, the piezoelectric sensor 120 can be adhered to the lower part of the outer surface of the infusion bag through double-sided tape. Specifically, in another embodiment, the piezoelectric sensor 120 can also be directly integrated into the outer surface of the infusion bag.

[0040] Specifically, in one embodiment, the host 110 and the piezoelectric sensor 120 are communicatively connected by wire. Specifically, the host 110 determines whether the infusion of the current infusion bag of the corresponding patient has ended by calculating the pressure change signal corresponding to the surface tension transmitted by the piezoelectric sensor 120.

[0041] Specifically, in one embodiment, a hook for hanging the infusion bag is provided at the lower part of the host 110, and the communication interface is disposed on the contact surface between the hook and the hanging ring of the infusion bag and is connected to the hanging ring of the infusion bag.

[0042] Please also refer to Figure 2 , Figure 2 which is the structural block diagram of the infusion alarm 100 according to the second embodiment of the present invention. As Figure 1 shown in Figure 2 and

[0043] shown, the infusion alarm 100 provided in this embodiment further includes a monitoring platform 130, and the host 110 is also communicatively connected to the monitoring platform 130.

[0044] Specifically, in one embodiment, the piezoelectric sensor 120 is used to detect the change in the surface tension in the infusion bag to obtain a corresponding pressure change signal and transmit the pressure change signal to the host 110. The host 110 is used to process the pressure change signal to obtain the liquid level information of the infusion bag hung on the hook, to give an alarm reminder when the liquid level of the infusion bag is lower than a preset liquid level, and to send the liquid level information to the monitoring platform 130. The monitoring platform 130 is used to display the liquid level information and give an alarm prompt when the liquid level of the corresponding infusion bag is lower than the preset liquid level, so that medical staff can replace the infusion bag of the corresponding patient as soon as possible, without the need for medical staff to constantly monitor the liquid level state of the patient's infusion bag, improving the work efficiency of medical staff.

[0045] Further, in one embodiment, the host 110 further includes a peripheral interface module 113 and an Ethernet interface 115. The central processing module 111 is connected to the peripheral interface module 113. The peripheral interface module 113 is further respectively connected to an alarm module 114, the Ethernet interface 115, and a communication interface. The Ethernet interface 115 is further communicatively connected to a monitoring platform 130.

[0046] Further, in one embodiment, the host 110 further includes a wireless module 116. The wireless module 116 is communicatively connected to the central processing module 111. The wireless module 116 is further communicatively connected to the monitoring platform 130 through WIFI communication, Bluetooth communication, or NB-loT communication.

[0047] Specifically, in one embodiment, the central processing module 111 is used to drive the peripheral interface module 113, and obtain the pressure change data detected by the piezoelectric sensor 120, so as to analyze the pressure change data to obtain the liquid level information of the infusion bag, and drive the alarm module 114 to issue an audible and visual reminder according to the liquid level information. At the same time, the alarm information is transmitted to the hospital's monitoring platform 130 through a network transmission protocol, so that medical staff can obtain the liquid level information of the corresponding patient's infusion bag in a timely manner.

[0048] Specifically, in one embodiment, the power supply module 112 can, but is not limited to, adopt the method of an internal battery. For example, in other embodiments, the power supply module 112 can also be directly connected to an AC power supply through a USB charging interface and a charger head to supply power to each module in the host 110.

[0049] Specifically, in one embodiment, the peripheral interface module 113 is used to drive the piezoelectric sensor 120 and receive the pressure change signal transmitted by the piezoelectric sensor 120. The peripheral interface module 113 is further used to connect to the Ethernet interface 115 to transmit the alarm information to the hospital's monitoring platform 130 through the Ethernet, so that medical staff can obtain the liquid level information of the corresponding patient's infusion bag in a timely manner.

[0050] Specifically, in one embodiment, a pluggable interface is adopted between the host 110 and the piezoelectric sensor 120. The interface preferably uses a magnetic material. When the medical staff places the host 110 and the piezoelectric sensor 120 in the correct direction, the interface between the host 110 and the piezoelectric sensor 120 is normally attracted. When the placement direction of the host 110 and the piezoelectric sensor 120 is incorrect, the interface cannot be normally attracted.

[0051] Specifically, in one embodiment, the alarm module 114 includes at least a buzzer or an LED warning light. Specifically, in this embodiment, the alarm module 114 includes both a buzzer and an LED warning light at the same time. When the infusion of the infusion bag ends, the corresponding alarm module 114 will issue an audible and visual reminder to remind the patient and medical staff to replace the corresponding infusion bag in a timely manner.

[0052] Specifically, in one embodiment, when the hospital supports wireless transmission, the wireless module 116 is used to transmit the alarm information to the monitoring platform 130 through a wireless connection.

[0053] Specifically, in one embodiment, the piezoelectric sensor 120 is a piezoresistive sensor. The shape of the piezoelectric sensor 120 can be, but is not limited to, an oval shape. For example, the shape of the piezoelectric sensor 120 can also be set as the shape of a resistance wire. Specifically, in one embodiment, the piezoelectric sensor 120 can be, but is not limited to, directly integrated into the interlayer of the infusion bag. For example, in other embodiments, the piezoelectric sensor 120 can also be pasted on the outer surface of the infusion bag as an independent device, so as to enable the repeated use of the piezoelectric sensor 120 and save costs.

[0054] Specifically, in one embodiment, a part of the piezoelectric sensor 120 along the length direction is arranged on the hard part at the bottom of the infusion bag, and another part of the piezoelectric sensor 120 along the length direction is arranged on the soft outer membrane part at the lower part of the infusion bag, but it is not limited to this. For example, in other embodiments, the piezoelectric sensor 120 can also be arranged horizontally on the lower part of the infusion bag.

[0055] Please refer to Figure 3 , Figure 3 which is a schematic structural diagram of the infusion alarm 100 according to the third embodiment of the present invention. As Figures 1 to 3 shown, specifically, in this embodiment, the infusion alarm 100 includes a main unit 110, a connecting line 150, and a piezoelectric sensor 120 that can be pasted on the outer surface of the infusion bag 140.

[0056] Specifically, in one embodiment, a hook 117 is provided at the lower part of the main unit 110. One end of the hook 117 is fixedly connected to the lower end surface of the main unit 110, and the other end of the hook 117 is arranged close to the lower end surface of the main unit 110 and forms a notch 118 with the lower end surface of the main unit 110 to facilitate hanging the infusion bag 140 on the hook 117. Specifically, a communication interface 152 is also provided at the lower part of the main unit 110, and the communication interface 152 is communicatively connected to the piezoelectric sensor 120.

[0057] Specifically, in one embodiment, the connecting line 150 is composed of male connectors 151 at both ends and a wire (not shown in the figure).

[0058] Specifically, in one embodiment, the piezoelectric sensor 120 may be, but is not limited to, a piezoresistive elliptical piezoelectric sensor 121, a wire 122, and a signal output terminal 123. Specifically, the wire 122 electrically connects the signal output terminal 123 to the piezoresistive elliptical piezoelectric sensor 121. The signal output terminal 123 of the piezoelectric sensor 120 is communicatively connected to the communication interface 152 of the host 110 through a connection line 150.

[0059] Specifically, in one embodiment, the piezoelectric sensor 120 is disposed on the infusion bag 140 to detect a pressure change signal corresponding to the surface tension of the infusion bag 140 to obtain a pressure change signal, and transmit the pressure change signal to the host 110. The host 110 is configured to process the pressure change signal to obtain the liquid level information of the infusion bag 140 hanging on the hook 117, so as to give an alarm reminder when the liquid level of the infusion bag 140 is lower than a preset liquid level.

[0060] Specifically, in one embodiment, the piezoelectric sensor 120 is disposed on the lower portion of the outer surface of the infusion bag 140 by a pasting method or an integration method.

[0061] Specifically, in one embodiment, when the piezoelectric sensor 120 is disposed on the lower portion of the outer surface of the infusion bag 140 by a pasting method, for example, the piezoelectric sensor 120 is pasted at a position close to the lower portion of the infusion bag 140. Specifically, the signal output terminal 123 of the piezoelectric sensor 120 is disposed close to the piezoelectric sensor 120, and the signal output terminal 123 is connected to the communication interface 152 through a connection line 150.

[0062] Specifically, in one embodiment, the piezoelectric sensor 120 can be customized as a flexible adhesive patch, and is pasted on the outer wall of the lower liquid outlet tube 142 of the infusion bag 140 or directly on the outer wall of the infusion bag 140 by a circumferential pasting method, which is compatible with the existing infusion bag 140 and can realize intelligent monitoring during the infusion process. For example, medical staff can arrange multiple piezoelectric sensors 120 on the outer surface of the infusion bag 140 and the lower liquid outlet tube 142 of the infusion bag 140 to monitor the infusion process, give an early warning of the approaching end of the infusion, with high stability and reliability, without the need for medical staff to constantly pay attention to the liquid level state of the patient's infusion bag 140, thus improving the work efficiency of medical staff.

[0063] Please also refer to Figure 4 and Figure 5 , Figure 4 which is Figure 3 a schematic top view partial structure diagram of the infusion bag 140 in a state filled with liquid medicine in Figure 5 and Figure 3 is a schematic top view partial structure diagram of the infusion bag 140 in a state when the infusion is finished in Figures 1 to 5As shown, specifically, before the infusion starts, the infusion bag 140 is filled with liquid medicine. The liquid medicine has an outward pressure on the wall of the infusion bag 140, and the piezoelectric sensor 120 presents a convex shape. When the infusion ends, the two side walls of the infusion bag gradually fit together, the piezoelectric sensor 120 gradually returns to a flat state, and the detected pressure value becomes smaller. When the pressure is less than a pre-set threshold value, it is determined that the infusion has ended.

[0064] Specifically, in one embodiment, during the use of the infusion alarm, medical staff paste the piezoelectric sensor 120 on the outer surface of the infusion bag 140, and make the piezoelectric sensor 120 close to one end of the lower liquid outlet pipe 142 of the infusion bag 140. At the same time, hang the infusion bag 140 on the hook 117 of the main unit 110, and electrically connect the piezoelectric sensor 120 to the main unit 110 with a connecting wire 150. Specifically, at the beginning stage of the infusion, the infusion bag 140 is filled with liquid medicine, and the outer surface of the infusion bag 140 bulges (as Figure 4 shown). The piezoelectric sensor 120 bulges accordingly under the surface tension of the outer surface of the infusion bag 140, and the resistance of the piezoelectric sensor 120 changes. For example, when the material characteristic of the piezoelectric sensor 120 is that the pressure is proportional to the resistance value, when the pressure increases, the resistance of the piezoelectric sensor 120 increases, and vice versa.

[0065] Specifically, in one embodiment, when the infusion ends (as Figure 5 shown), the infusion bag 140 is in a flat state, the piezoelectric sensor 120 is in a flat state, and the resistance value of the piezoelectric sensor 120 is lower than the preset resistance value. Specifically, when the main unit 110 detects that the resistance value of the piezoelectric sensor 120 is lower than the preset resistance value, that is, when the liquid level of the infusion bag 140 is lower than the preset liquid level, it sends an alarm message to the alarm module 114 to control the alarm module 114 to emit an alarm sound and light prompt. At the same time, the alarm message is sent to the monitoring platform 130 by means of a wireless network or a wired network, so that medical staff can obtain the liquid level information of the corresponding patient's infusion bag 140 in the first time.

[0066] Please refer to Figure 6 , Figure 6 which is the structural schematic diagram of the infusion alarm 100 according to the fourth embodiment of the present invention. As Figures 1 to 6 shown, specifically, in this embodiment, the infusion alarm 100 includes a main unit 110 and a piezoelectric sensor 120 integrated on the infusion bag 140.

[0067] Specifically, in one embodiment, the host 110 includes a hanging loop 119 connected to the infusion stand, a hook 117 connected to the infusion bag 140, and a communication interface 152 electrically connected to the piezoelectric sensor 120. There is a notch 118 on the hook 117 to facilitate hanging the infusion bag 140. Specifically, in one embodiment, both the communication interface 152 of the host 110 and the signal output end 123 of the piezoelectric sensor 120 can be made of magnetic materials to ensure easy operation and stability of the connection.

[0068] Specifically, in one embodiment, the infusion bag 140 integrated with the piezoelectric sensor 120 includes an infusion bag hanging loop 141, a lower liquid outlet tube 142, a wire 122, an infusion bag end interface 124, and a piezoresistive elliptical piezoelectric sensor 121. Specifically, in one example, the wire 122 is directly arranged in the interlayer of the infusion bag 140, and the infusion bag end interface 124 is arranged on the infusion bag hanging loop 141. Specifically, in one example, the signal output end 123 of the piezoelectric sensor 120 is the infusion bag end interface 124, which is preferably made of magnetic material. During use, the infusion bag end interface 124 is hung on the communication interface 153 of the host 110 to achieve the electrical connection between the host 110 and the piezoelectric sensor 120. The piezoresistive elliptical piezoelectric sensor 121 is electrically connected to the infusion bag end interface 124 through the wire 122 arranged on the inner lining of the infusion bag 140, and then transmits the pressure change signal to the host 110.

[0069] Specifically, in this embodiment, the resistance of the piezoelectric sensor 120 is horizontally integrated along the length direction at the lower part of the infusion bag 140 and is arranged close to the bottom of the infusion bag 140.

[0070] Specifically, in one example, when the piezoelectric sensor 120 is integrally arranged on the outer surface at the lower part of the infusion bag 140, the signal output end 123 of the piezoelectric sensor 120 is arranged on the top of the hanging loop 119 of the infusion bag 140 and is directly connected to the communication interface 153 in the host 110, and the wire 122 between the signal output end 123 of the piezoelectric sensor 120 and the piezoelectric sensor 120 is arranged in the interlayer of the infusion bag 140.

[0071] Specifically, in one embodiment, during the use of the infusion alarm, the infusion bag 140 integrated with the piezoelectric sensor 120 is hung on the hook 117 of the host 110, and it is ensured that the communication interface 153 of the host 110 and the infusion bag end interface 124 are electrically connected. Specifically, at the beginning stage of infusion, the infusion bag 140 is filled with liquid medicine, and the outer surface of the infusion bag 140 bulges (such as Figure 4As shown in the figure, the piezoelectric sensor 120 bulges under the surface tension of the outer surface of the infusion bag 140, and the resistance of the piezoelectric sensor 120 changes. For example, when the material property of the piezoelectric sensor 120 is that the pressure is proportional to the resistance value, the resistance of the piezoelectric sensor 120 increases when the pressure increases, and vice versa.

[0072] Specifically, in one embodiment, when the infusion ends (as Figure 5 shown), the infusion bag 140 is in a flat state, the piezoelectric sensor 120 is in a flat state, and the resistance value of the piezoelectric sensor 120 is lower than the preset resistance value. Specifically, when the host 110 detects that the resistance value of the piezoelectric sensor 120 is lower than the preset resistance value, that is, when the liquid level of the infusion bag 140 is lower than the preset liquid level, an alarm message is sent to the alarm module 114 to control the alarm module 114 to emit an alarm sound and light prompt, and at the same time, the alarm message is sent to the monitoring platform 130 through a wireless network or a wired network, so that medical staff can obtain the liquid level information of the corresponding patient's infusion bag 140 in the first time.

[0073] Please refer to Figure 7 , Figure 7 which is a schematic structural diagram of the infusion alarm 100 according to the fifth embodiment of the present invention. As Figure 6 shown in Figure 7 and

[0074] shown, the difference between the infusion alarm 100 provided in this embodiment and the infusion alarm 100 provided in the fourth embodiment is that the integrated position and direction of the piezoelectric sensor 120 on the infusion bag 140 are different. Specifically, in one implementation, a part of the piezoelectric sensor 120 along the length direction is integrated on the hard part at the bottom of the infusion bag 140, and another part of the piezoelectric sensor 120 along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag 140.

[0075] Please also refer to Figure 8 , Figure 8 which is a schematic structural diagram of the infusion alarm 100 according to the sixth embodiment of the present invention. As Figure 7 shown in Figure 8 , the difference between the infusion alarm 100 provided in this embodiment and the infusion alarm 100 provided in the fourth embodiment is that the number of piezoelectric sensors 120 is two groups.

[0076] Specifically, in one embodiment, the two groups of piezoelectric sensors 120 are the first piezoelectric sensor 125 and the second piezoelectric sensor 126. A part of the first piezoelectric sensor 125 is arranged in the vertical direction, and the second piezoelectric sensor 126 is arranged in the horizontal direction.

[0077] Specifically, in one implementation manner, a part of the first piezoelectric sensor 125 along the length direction is integrated on the hard part at the bottom of the infusion bag 140, and another part of the first piezoelectric sensor 125 along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag 140.

[0078] Specifically, in one implementation manner, the second piezoelectric sensor 126 is integrated in the horizontal direction above the top of the first piezoelectric sensor 125 in the infusion bag 140. Specifically, there are multiple second piezoelectric sensors 126, and multiple second piezoelectric sensors 126 are integrally arranged in parallel above the top of the first piezoelectric sensor 125 in the infusion bag 140. For example, as Figure 8 shown, the second piezoelectric sensor 126 includes three paths. Specifically, the distance between the second piezoelectric sensors 126 in the three paths can be set in an increasing manner, but it is not limited to this. For example, the second piezoelectric sensors 126 arranged more densely near the bottom of the infusion bag 140 are used to improve the detection accuracy.

[0079] Specifically, in one implementation manner, a piezoelectric sensor 120 is integrated on the lower liquid pipe of the infusion bag 140, and whether the infusion is ended is detected by the change of the surface tension of the infusion bag 140 with or without the liquid medicine. The piezoelectric sensor 120 has a low cost and can be directly integrated with the infusion bag 140, and the intelligent monitoring of the infusion process can be realized without additional operations by medical staff.

[0080] Specifically, in one implementation manner, both the first piezoelectric sensor 125 and the second piezoelectric sensor 126 can be set as piezoresistive elliptical piezoelectric sensors 121, but it is not limited to this. For example, in other implementation manners, both the first piezoelectric sensor 125 and the second piezoelectric sensor 126 can also be set as piezoresistive variable resistance wires 127 (please refer to Figure 9 ), or the first piezoelectric sensor 125 and the second piezoelectric sensor 126 can also be set as piezoresistive elliptical piezoelectric sensors 121 and / or piezoresistive variable resistance wires 127.

[0081] Please refer to Figure 9 as well, Figure 9 which is a schematic structural diagram of the piezoelectric sensor 120 in the infusion alarm 100. As Figures 1 to 9 shown, the piezoelectric sensor 120 can be, but is not limited to, set as a piezoresistive wire 127. For example, in other embodiments, the piezoelectric sensor 120 can also be set as a piezoresistive elliptical piezoelectric sensor 121.

[0082] Figure 10 This is a structural block diagram of the infusion bag 200 according to the seventh embodiment of the present invention. As Figure 10 shown, the infusion bag 200 provided in this embodiment includes a piezoelectric sensor 220 for obtaining the surface tension in the infusion bag 200. Specifically, in one embodiment, the piezoelectric sensor 220 is disposed on the surface of the infusion bag 200.

[0083] Specifically, in one embodiment, a part of the piezoelectric sensor 220 along the length direction is integrated on the rigid part at the bottom of the infusion bag 200, and another part of the piezoelectric sensor 220 along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag 200, but it is not limited thereto. For example, in other embodiments, the pressure sensor can also be disposed horizontally on the lower part of the infusion bag 200.

[0084] Please refer to Figure 11 as well, Figure 11 which is Figure 10 a structural block diagram of the connection between the piezoelectric sensor 220 and the host in Figures 10 to 11 As shown, in this embodiment, the piezoelectric sensor 220 is communicatively connected to the host 240. Specifically, in one embodiment, the piezoelectric sensor 220 in the infusion bag 200 is communicatively connected to the host 240 in the infusion alarm to monitor the liquid level of the infusion bag 200, eliminating the need for medical staff to constantly monitor the liquid level of the infusion bag 200 and improving the work efficiency of medical staff.

[0085] Specifically, in one embodiment, the piezoelectric sensor 220 is used to detect the change in the surface tension of the infusion bag 200 to obtain a piezovoltage signal, and transmit the piezovoltage signal to the host 240 connected to the piezoelectric sensor 220. The host 240 is used to process the piezovoltage signal to obtain the liquid level information of the infusion bag 200, and give an alarm reminder when the liquid level of the infusion bag 200 is lower than the preset liquid level.

[0086] Specifically, in one embodiment, the piezoelectric sensor 220 is integrated on the lower part of the outer surface of the infusion bag 200 by an integrated method, and the signal output end of the piezoelectric sensor 220 is disposed on the contact surface between the top of the hanging ring of the infusion bag 200 and the hook in the host 240, and is used to directly connect to the communication interface in the host 240.

[0087] Specifically, in one embodiment, the wire between the signal output end of the piezoelectric sensor 220 and the piezoelectric sensor 220 is arranged in the interlayer of the infusion bag 200.

[0088] Specifically, in one embodiment, the number of piezoelectric sensors 220 is two groups. The two groups of piezoelectric sensors 220 are the first piezoelectric sensor and the second piezoelectric sensor. A part of the first piezoelectric sensor is arranged in the vertical direction, and the second piezoelectric sensor is arranged in the horizontal direction. A part of the first piezoelectric sensor along the length direction is integrated on the rigid part at the bottom of the infusion bag 200, and another part of the first piezoelectric sensor along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag 200. The second piezoelectric sensor is integrated above the top of the first piezoelectric sensor in the infusion bag 200 in the horizontal direction.

[0089] Specifically, in one embodiment, the second piezoelectric sensor is multiple paths. The multiple-path second piezoelectric sensors are parallelly integrated above the top of the first piezoelectric sensor in the infusion bag 200.

[0090] Specifically, in one embodiment, the signal output end of the piezoelectric sensor 220 is connected to the communication interface of the host 240 through a connecting line.

[0091] Specifically, in one embodiment, a part of the piezoelectric sensor 220 along the length direction is integrated on the rigid part at the bottom of the infusion bag 200, and another part of the piezoelectric sensor 220 along the length direction is integrated on the soft outer membrane part at the lower part of the infusion bag 200.

[0092] For the specific process and structure of each functional unit of the piezoelectric sensor 220 in the infusion bag 200 in this embodiment to achieve its respective functions, please refer to the specific content described in the above Figures 1 to 9 illustrated embodiment, and details are not described herein again.

[0093] For the specific process and structure of each functional unit of the host 240 in the infusion alarm in this embodiment to achieve its respective functions, please refer to the specific content described in the above Figures 1 to 9 illustrated embodiment, and details are not described herein again.

[0094] Specifically, the infusion alarm and the infusion bag provided in this embodiment are provided with a communication interface connected to the piezoelectric sensor on the host. The piezoelectric sensor is used to detect the change in surface tension in the infusion bag to obtain a pressure change signal, and transmit the pressure change signal to the host. The host is used to process the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than the preset liquid level, so that medical staff can replace the infusion bag for the corresponding patient as soon as possible, without the need for medical staff to constantly pay attention to the liquid level state of the patient's infusion bag, improving the work efficiency of medical staff.

[0095] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

Claims

1. An infusion alarm, characterized in that, The infusion alarm includes: a main unit, on which a communication interface connected to a piezoelectric sensor is provided; The piezoelectric sensor is used to detect the change in surface tension in the infusion bag to obtain a pressure change signal, and transmit the pressure change signal to the main unit; The main unit is used to process the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than a preset liquid level; It further includes a piezoelectric sensor, and the piezoelectric sensor is connected to the communication interface; the piezoelectric sensor is integrally arranged on the lower part of the outer surface of the infusion bag in an integrated manner, the signal output end of the piezoelectric sensor is arranged on the top of the hanging ring of the infusion bag, and is directly connected to the communication interface in the main unit, and the wire between the signal output end of the piezoelectric sensor and the piezoelectric sensor is arranged in the interlayer of the infusion bag; The number of the piezoelectric sensors is two groups, and the two groups of piezoelectric sensors are a first piezoelectric sensor and a second piezoelectric sensor. A part of the first piezoelectric sensor is arranged in the vertical direction, and the second piezoelectric sensor is arranged in the horizontal direction; A part of the first piezoelectric sensor in the length direction is integrally arranged on the hard part in the bottom of the infusion bag, and another part of the first piezoelectric sensor in the length direction is integrally arranged on the soft outer membrane part in the lower part of the infusion bag; The second piezoelectric sensor is integrally arranged above the top of the first piezoelectric sensor in the infusion bag in the horizontal direction. There are multiple second piezoelectric sensors, and the second piezoelectric sensors are more densely arranged near the bottom of the infusion bag.

2. The infusion alarm according to claim 1, wherein, A hook for hanging the infusion bag is provided at the lower part of the main unit, and the communication interface is arranged on the contact surface between the hook and the hanging ring of the infusion bag and is connected to the hanging ring of the infusion bag.

3. The infusion alarm according to claim 1, characterized in that, The main unit includes a central processing module, a power supply module and an alarm module. The central processing module is respectively connected to the power supply module and the alarm module, and the central processing module is also communicatively connected to a monitoring platform.

4. The infusion alarm according to claim 1, characterized in that, The piezoelectric sensor is arranged on the lower part of the outer surface of the infusion bag by means of pasting, and the signal output end of the piezoelectric sensor is connected to the communication interface through a connecting wire.

5. The infusion alarm according to claim 1, characterized in that, There are multiple second piezoelectric sensors, and the multiple second piezoelectric sensors are integrally arranged in parallel above the top of the first piezoelectric sensor in the infusion bag.

6. The infusion alarm according to claim 1, characterized in that, A part of the piezoelectric sensor in the length direction is arranged on the hard part in the bottom of the infusion bag, and another part of the piezoelectric sensor in the length direction is arranged on the soft outer membrane part in the lower part of the infusion bag.

7. The infusion alarm according to claim 1, characterized in that, The piezoelectric sensor is a piezoresistive elliptical piezoelectric sensor or a piezoresistive wire.

8. An infusion bag, characterized in that: It includes a piezoelectric sensor for obtaining the surface tension in the infusion bag, and the piezoelectric sensor is arranged on the surface of the infusion bag; The piezoelectric sensor is used to detect the change in the surface tension of the infusion bag to obtain a pressure change signal, and transmit the pressure change signal to the main unit connected to the piezoelectric sensor; The main unit is used to process the pressure change signal to obtain the liquid level information of the infusion bag, so as to give an alarm reminder when the liquid level of the infusion bag is lower than a preset liquid level; The signal output end of the piezoelectric sensor is arranged on the contact surface between the top of the hanging ring of the infusion bag and the host hook, and is used to connect with the communication interface in the host; The wire between the signal output end of the piezoelectric sensor and the piezoelectric sensor is arranged in the interlayer of the infusion bag; The number of the piezoelectric sensors is two groups. The two groups of piezoelectric sensors are the first piezoelectric sensor and the second piezoelectric sensor. A part of the first piezoelectric sensor is arranged in the vertical direction, and the second piezoelectric sensor is arranged in the horizontal direction; A part of the first piezoelectric sensor along the length direction is integrated on the hard part in the bottom of the infusion bag, and another part of the first piezoelectric sensor along the length direction is integrated on the soft outer membrane part in the lower part of the infusion bag; The second piezoelectric sensor is integrated horizontally above the top of the first piezoelectric sensor in the infusion bag. There are multiple second piezoelectric sensors, and the second piezoelectric sensors are denser near the bottom of the infusion bag.

9. The infusion bag according to claim 8, wherein There are multiple second piezoelectric sensors, and the multiple second piezoelectric sensors are integrated in parallel above the top of the first piezoelectric sensor in the infusion bag.

10. The infusion bag according to claim 8, wherein, The signal output end of the piezoelectric sensor is connected to the communication interface of the host through a connecting wire.

11. The infusion bag according to claim 8, characterized in that, A part of the piezoelectric sensor along the length direction is integrated on the hard part in the bottom of the infusion bag, and another part of the piezoelectric sensor along the length direction is integrated on the soft outer membrane part in the lower part of the infusion bag.

Images