JP2018020138A - Gas delivery system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gas delivery device used in a gas delivery system for administering a therapeutic gas, and a method of administering the therapeutic gas.SOLUTION: A gas delivery system 10 including a gas delivery device, a control module 200, and a gas delivery mechanism is described. The gas delivery device includes a valve 107 and a valve assembly 100, and the valve assembly includes a valve and a circuit including a memory, and a processor and a transmitting and receiving part in communication with the memory. The memory may include gas data such as gas identification information, gas expiration, and gas concentration. The transmitting and receiving part on the circuit of the valve assembly may transmit wireless optical line-of-sight signals to send the gas data to the control module. A method of administering the gas in which the gas delivery mechanism includes a ventilator 400 and a breathing circuit 410 is also described.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a gas delivery device for use in a gas delivery system for administering a therapeutic gas and a method for administering a therapeutic gas.

  Some treatments use gas that is inhaled by the patient. Gas delivery devices are often used in hospitals to deliver the necessary gas to patients in need. When administering gas therapy to these patients, it is important to make sure that the correct type of gas and the correct concentration are being used. It is also important to confirm dose information and usage.

  Some known gas delivery devices include a computer system that tracks patient information, such as information about the type of gas treatment, concentration of administered gas, dose information, etc. for a particular patient. There is. However, these computer systems are often other components of the gas delivery device, such as a computer system for administration to a patient and / or a valve that controls the flow of gas to the ventilator. Do not communicate. Furthermore, with known systems, it is often difficult or impossible to determine the amount of gas used by a patient, which can overcharge usage fees.

  There is a need for a gas delivery device that incorporates a computer system to ensure that patient information contained within the computer system is aligned with the gas to be delivered by the gas delivery device. There is also a need for an integrated device that can accurately and easily track the usage of individual patients without resorting to manual setup or repeated connections.

Aspects of the invention relate to a gas delivery device that can be used in a gas delivery system and a method for administering a therapeutic gas to a patient. One or more embodiments of the gas delivery device described herein may include a valve and a circuit having a valve memory in communication with the valve processor and the valve transceiver. One or more embodiments of the gas delivery system described herein include a control processing unit (CPU) that communicates the gas delivery device described herein with a CPU memory and a CPU transceiver. ) Integrated with the control module. As described herein, the valve transceiver unit and the CPU transceiver unit may communicate so that information or data from the valve memory and the CPU memory are transmitted to each other. Information communicated between the valve memory and the CPU memory may be utilized to select a treatment to be administered to the patient and to control the administration of the selected treatment to the patient. The gas delivery devices and systems described herein may be used with medical devices such as ventilators that deliver gas to a patient.

A first aspect of the present invention relates to a gas delivery device. In one or more embodiments, the gas delivery device dispenses a therapeutic gas from a gas source under the control of the control module. In one variation, the gas delivery device may include a valve and a circuit that can be attached to the gas source. The valve may include a fluidly connected inlet and outlet and a valve actuator that opens and closes the valve to allow gas to flow through the valve to the control module. The circuit of one or more embodiments is stored in memory in a control module that transmits memory and wireless optical line-of-sight signals and controls gas delivery to the subject. Alternatively, a processing unit and a transmission / reception unit communicating with the memory for transmitting the held information are included. In one or more alternative embodiments, a signal that conveys information stored or retained in memory to a control module that controls gas delivery to a subject may be communicated in a wired manner. Examples of such wired signals may incorporate or utilize optical cables, wired pair cables, and / or coaxial cables. The circuit may include a memory that stores gas data, and the gas data may include one or more of gas identification information, a gas expiration date, and a gas concentration. The transceiver may communicate to transmit gas data to the control module via a wireless light line-of-sight signal.

  In one or more embodiments, the valve may include a data input in communication with the memory that allows a user to enter gas data into the memory. The gas data may be provided in a barcode that can be located at the gas source. In such embodiments, the gas data may be input to the valve data input for storage in memory by a user operated scanning device in communication with the data input. Specifically, the user may scan the barcode and transmit the gas data stored in the barcode to the valve memory via the data input unit.

  In one or more embodiments, the valve may include a power source. In such embodiments, the power source may include a portable power source such as a battery. In one or more embodiments, the valve transceiver may periodically transmit a wireless light line-of-sight signal to the control module such that the signal is interrupted at times when no signal is transmitted. In one or more specific embodiments, the time during which no signal is transmitted is comprised of approximately 10 seconds.

A second aspect of the invention relates to a gas delivery device as described herein, and a control module in fluid communication with a gas delivery mechanism such as a gas delivery device valve outlet and a ventilator. . In one or more embodiments, the control module may include a CPU transceiver that receives the line-of-sight signal from the transceiver, and a CPU that communicates with the CPU transceiver. The CPU executes computer program or algorithm instructions. In this specification, the expression “wireless optical line-of-sight signal” means that a transmitter and a receiver or two transceivers need to be lined up so that the signal can be transmitted linearly. Includes signals such as infrared signals. The CPU may include a CPU memory that stores gas data transmitted to the CPU transmission / reception unit by the valve transmission / reception unit of the gas delivery device.

  In one or more embodiments, the gas delivery system may combine the valve with a timer that includes a calendar timer and an event timer that measures and records the date and time that the valve opens and closes and the time that the valve remains open. . In such an embodiment, the valve memory stores the opening / closing date and time of the valve and the time for which the valve is opened, and the valve transmitting / receiving unit transmits the opening / closing date and time of the valve to the CPU transmitting / receiving unit for storage in the CPU memory. To do.

In one or more variations, the gas delivery system may incorporate a control module that further includes input means for inputting patient information into the CPU memory. The control module may also have a real time clock embedded in the CPU module so that the control module can recognize the current date and time and compare it to the expiration date stored in the gas delivery device. If the current date is past the expiration date, the control module can alert and not send the medication to the patient. When the term “patient information” is used, both patient information entered by the user and information set during manufacture, such as gas identification information and the gas concentration set in the control module to be delivered. It is intended to include. The control module may also include a display unit. In one or more embodiments, the display unit incorporates input means for inputting patient information into the CPU memory. In one or more embodiments, the CPU of the control module compares the patient information input to the CPU memory via the input means with the gas data from the transceiver. The CPU or the control module may include an alarm that is activated when the patient information input to the CPU memory and the gas data from the transmitter / receiver do not match or conflict with each other. As used herein, the expression “not matched” includes the expressions “not identical”, “not substantially identical”, “conflicting”, and / or “substantially conflicting”. The CPU includes a matching algorithm that includes criteria for verifying whether patient information and a data set such as additional data are consistent, and whether one data set (ie, patient information) is consistent with another data set. Determine by executing. The algorithm may be configured to determine a match if all parameters of the data set match or selected parameters of the data set match. The algorithm may be configured to include an error range. For example, if the patient information requires a gas concentration of 800 ppm and the additional data includes a gas concentration of 805 ppm, the algorithm is configured to include an error range of ± 5 ppm so that it can be determined that the patient information matches the additional data. May be. Of course, the determination of whether patient information and additional data match will depend on the situation, such as variables during gas concentration measurement taking temperature and pressure into account.

  A third aspect of the present invention relates to a control module memory including instructions for causing a control module processing unit to receive gas data from a valve via a wireless light line-of-sight signal. The valve may be connected to a gas source and may include a memory that stores gas data. The control module memory may include instructions that cause the control module processor to compare the gas data with patient information entered by the user. Patient information entered by the user may be stored in the control module memory. The gas data may be selected from one or more of gas identification information, gas expiration date, and gas concentration. In one or more embodiments, the control module memory coordinates the delivery of treatment to the patient by a medical device such as a ventilator that delivers gas to the patient via a wireless optical line-of-sight signal. Instructions may be included that cause the control module processor to do this. The control module memory may also include instructions for causing the control module processing unit to select a treatment to be provided to the patient based on the received patient information and to control the provision of the selected treatment to the patient.

  In one or more embodiments, the memory may include instructions that cause the processing unit to detect the presence of two or more valves and whether two or more valves are open simultaneously. According to one or more specific embodiments, the first valve state selected from the first open position and the first closed position is changed from the first valve connected to the first gas source to the first valve state. A second valve state selected from a second open position and a second closed position is received from a second valve connected to a second gas source. And comparing the first valve state and the second valve state, the first valve state includes the first open position, and the second valve state is the second valve state. The memory includes a command for causing the processing unit to issue an alarm when the open position is included. In one or more alternative embodiments, the first valve state and the second valve state are communicated to the processing unit via a single wireless light line-of-sight signal rather than separate wireless light line-of-sight signals. It's okay. In a more specific embodiment, the memory of one or more embodiments has the first valve state includes a first open position and the second valve state includes a second open position. An instruction may be included that causes the processing unit to terminate providing treatment.

In one or more embodiments, the memory may include instructions that cause the processing unit to issue an alarm when a desired dose is sent through the valve. In such embodiments, the processing unit may include a memory that stores the desired dose or dose information. In such embodiments, gas delivery information or information regarding the amount of gas delivered is received, the gas delivery information is compared with the dose information, and an alarm is issued if the gas delivery information and the dose information match. The memory may include instructions that cause the processing unit to do this. As used herein, the term “dose information” is used to meter and administer doses, such as parts per million (ppm), milligrams of drug per patient kilogram (mg / kg), millimeters per breath, etc. It may be expressed in units. In one or more embodiments, the dose information may include a variety of uses, such as administering a standard or constant concentration of gas to the patient, or administering the gas using a pulse method. It's okay. Such pulsing methods include administering a therapeutic gas to the patient during the patient's inspiratory cycle, where the gas is administered over one or more breaths and is independent of the patient's breathing pattern Sent out.

  A fourth aspect of the invention relates to a method for administering a therapeutic gas to a patient. In one or more embodiments, the method establishes communication between a patient and a gas delivery device comprising a first memory containing gas data via a transceiver and stores the gas data in a second memory. Comparison with patient information provided. The second memory may be included in a control module that communicates with the gas delivery device. The method compares the gas data with the patient information and then adjusts the delivery of treatment to the patient by the gas delivery device via the wireless optical line-of-sight signal and provides the patient with a comparison based on the comparison of the gas data with the patient information. It may further comprise selecting a treatment to be provided and controlling the delivery of the selected treatment to the patient. In one or more specific embodiments, the method may include inputting gas data into the first memory of the gas delivery device and / or entering patient information into the second memory. . In embodiments where the method includes entering patient information into a second memory, the control module may include an input means capable of entering patient information into the second memory. In one or more variations, the method includes discontinuing delivery of the selected treatment to the patient based on a comparison of the gas data and patient information. The method may include issuing an alert based on a comparison of the gas data and patient information.

FIG. 1 is a diagram of a gas delivery system that includes a gas delivery device, a gas source, a control module, and a gas delivery mechanism according to one or more embodiments. FIG. 2 is a diagram illustrating a valve assembly of a gas delivery device according to one or more embodiments attached to a gas source. FIG. 3 shows an exploded view of the valve assembly shown in FIG. FIG. 4 is a diagram illustrating a circuit supported within the valve assembly shown in FIG. 2 according to one or more embodiments. FIG. 5 is a diagram illustrating an exemplary gas source used with the valve assembly shown in FIG. FIG. 6 is an operation flowchart of communication regarding establishment of communication between the circuit and the control module between the circuit and the control module of the gas delivery device shown in FIG. 1. FIG. 7 shows a front view of an exemplary gas delivery system. FIG. 8 shows a rear view of the gas delivery system shown in FIG. FIG. 9 shows a partial side view of the gas delivery system shown in FIG. FIG. 10 illustrates a front view of a control module according to one or more embodiments. FIG. 11 shows a rear view of the control module shown in FIG. FIG. 12 is an operation flow diagram of communication regarding the gas contained in the gas source between the circuit and the control module of the gas delivery device shown in FIG. FIG. 13 is an operational flow diagram of gas delivery device preparation and use within a gas delivery system, according to one or more embodiments.

  Before describing some exemplary embodiments of the present invention, it should be understood that the present invention is not limited to the details of construction or processing steps set forth in the following description. It is. The present invention can take other embodiments and can be implemented or implemented in various ways.

A system for administering a therapeutic gas will be described. A first aspect of the present invention relates to a gas delivery device. The gas delivery device may include a valve assembly that includes at least one valve having a circuit. The gas delivery system includes a ventilator and a control module that controls the delivery of gas from the gas source to other devices used to introduce gas to the patient, such as a nasal cannula, endotracheal tube, face mask, etc. A communicating gas delivery device (eg, a valve assembly including a valve and a circuit) may be included. In this specification, the gas source may include a pressure vessel used to store gas at a pressure higher than atmospheric pressure, such as a gas source or a gas tank. A gas delivery system 10 is shown in FIG. In FIG. 1, the valve assembly 100 includes a valve 107 or valve actuator and a circuit 150 and communicates with the control module 200 via a wireless line-of-sight connection 300. In one or more alternative embodiments, communication between the valve assembly 100 and the control module 200 may be established via a wired signal. The gas delivery system 10 also includes a gas source 50 containing gas and a gas delivery mechanism attached to the valve assembly 100, the gas delivery mechanism including a ventilator 400 and a breathing circuit 410, and a control module. Communicate with 200.

  2 to 4 are diagrams illustrating components of the valve assembly 100. FIG. The valve assembly 100 includes a valve 107 and a circuit 150 supported within the valve assembly. FIG. 3 is a diagram illustrating an exploded view of the valve assembly 100, and shows the components of the physical circuit 150 and the valve 107. As will be described in more detail below with respect to FIG. 4, as shown in FIG. 4, the circuit 150 of the gas delivery apparatus includes a valve transceiver 120 that establishes communication with the control module 200. This is also discussed in more detail below.

  With reference to FIG. 2, the valve 107 includes a mounting 102 that attaches the valve assembly 100 to the gas source 50, an inlet 104, and an outlet 106 in fluid communication with the inlet 104. This is as clearly shown in FIG.

  FIG. 3 shows an exploded view of the valve assembly 100 and illustrates an actuator 114 disposed on the valve 107 and rotatable about the valve 107 to open and close the valve 107. Actuator 114 includes a cap 112 attached to actuator 114. As shown in FIG. 3, the circuit 150 may include a data input 108 disposed on the actuator 114. The data input unit 108 may be disposed at another location of the valve 107. In one or more variations, the data input unit is known in the art for inputting information or data into a memory, such as a port, such as a USB port, or a receiver unit that receives an electronic signal from a transmitter unit. Input means may be included.

  FIG. 4 shows a block diagram of the circuit 150. 4 includes a valve processing unit 122, a valve memory 134, a reset unit 128, a valve transmission / reception unit 120, and a power source 130. Circuit 150 may also include support circuitry, timer 124, sensor 126, and / or other sensors. Referring to FIG. 3, the circuit 150 is supported within the valve assembly 100, and specifically, the physical components of the circuit 150 are disposed between the actuator 114 and the cap 112. As shown in FIG. 3, the valve display unit 132 and the valve transmission / reception unit 120 are disposed adjacent to the cap 112 so that the valve display unit 132 can be seen through the window 113. The sensor 126 and the valve processing unit 122 are disposed below the valve display unit 132 and the valve transmission / reception unit 120 in the actuator 114.

  The valve processor 122 may be any form of computer processing device that can be used to control various operations and sub-processing devices in an industrial environment. The valve memory 134 is a computer readable medium, ie, an electrically erasable programmable read only memory (EEPROM), a random access memory (RAM), a read only memory (ROM), a floppy disk, a hard disk, etc. There may be one or more readily available memories, such as any form of local or remote digital storage, typically coupled to the valve processor 122. The assist circuit may be coupled to the valve processor 122 to assist the circuit 150 in a conventional manner. These circuits include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like.

In the illustrated embodiment, the valve memory 134 communicates with a data input 108 located on the side of the actuator 114. The data input unit 108 shown in FIGS. 3 to 4 is used to transfer data from the valve memory 134 to another device or to input data to the valve memory 134. For example, gas data including information on the gas contained in the gas source may be input to the valve memory 134 via the data input unit 108. In one or more alternative embodiments, the gas data may be programmed or entered directly into the valve memory 134 by the gas supplier. In one or more embodiments, the gas data may be provided in the form of a barcode 610 disposed on a label 600 affixed to the side of the gas source, as shown in FIG. The barcode 610 may be placed directly on the gas source. An external scanning device that communicates with the electronic data input unit 108 may be provided to scan the barcode 610 and transmit the information from the barcode 610 to the valve memory 134. The gas data may include information regarding information such as gas composition (eg, NO, O ₂ , NO ₂ , CO, etc.), concentration, expiration date, batch number and lot number, date of manufacture, and the like. The gas data may be configured to include one or more types of information. The valve processing unit 122 may include a command for transmitting all or a predetermined part of the gas data to another transmitting / receiving unit via the valve transmitting / receiving unit 120.

  In embodiments utilizing timer 124, timer 124 may include two sub-timers, one of which is a calendar timer and the other is an event timer. The reset unit 128 may be located inside the actuator 114 and may be pushed down to reset the event timer. The cap 112 also includes a window 113 that allows the user to see the valve display 132 disposed within the cap 112. The valve display unit 132 displays information regarding whether the actuator 114 is open or closed, and the time when the valve 107 was open or closed. In one or more embodiments, the valve display 132 may alternately flash two different numbers, the first number may be cumulative open time, and the second number may be the current event. It may be the time when the valve 107 is opened. Other indications may be made before the time the valve 107 is opened at the current event.

  The sensor 126 disposed in the actuator 114 may include a proximity switch of model MK20-B-100-W manufactured by Meder Inc. A sensor 126 utilized in one or more embodiments may detect whether the actuator 114 is on or off in cooperation with a magnet (not shown). Such a sensor is described in US Pat. No. 7,114,510, which is incorporated by reference in its entirety.

For example, the sensor 126 and corresponding magnet (not shown) may be located on the stationary portion of the valve 107. When the actuator 114 is turned to the closed position, the sensor 126 is adjacent to the magnet at the home position of the valve 107. When the sensor 126 is adjacent to the magnet, the sensor 126 does not send any signal to the valve processor 122 so that the actuator 114 is in a “closed” position or a valve state that includes an open or closed position. It has shown that. When the actuator 114 is rotated to open the valve 107, the sensor 126 detects that it has been moved away from the magnet and sends a signal to the valve processor 122 to indicate that it is in the “open” position. The valve processing unit 122 instructs the valve memory 134 to record the event of opening the valve 107 and to record the date and time of the event as indicated by the calendar timer. The valve processing unit 122 instructs the valve memory 134 to continue to check the position of the valve 107 while the valve 107 is open. When the valve 107 is closed, the valve processing unit 122 calculates the length of time that the valve 107 is open using the recorded opening / closing time, and records the time and the accumulated opening time in the valve memory 134. Order to do. Thus, every time the valve 107 is opened, the date and time of the event is recorded, the date and time of closing is recorded, the time that the valve 107 was opened is calculated and recorded, and the cumulative open time is calculated and recorded.

  In one or more embodiments where the power source 130 includes a battery, the valve transceiver 120 may be configured to communicate with the CPU transceiver 220 to maintain battery life. In this embodiment, the valve transceiver 120 is turned on to receive signals from the control module CPU transceiver 220 at 20 msec per second. The control module CPU transmission / reception unit 220 continuously outputs a short transmission signal, and when the valve transmission / reception unit 120 exists, the valve transmission / reception unit 120 responds at intervals of 20 msec. Thereby, since the power supply of the valve | bulb transmission / reception part 120 only turns on only 20 msec per second, consumption of a battery is suppressed. When the valve transmission / reception unit 120 responds, the signal includes information on whether the communication from the control module CPU transmission / reception unit 220 was early or late within the 20 msec window. Thereby, once communication is established, the communication is synchronized with the 20 msec window, and the valve transmitting / receiving unit 120 is turned on to receive communication. For example, as illustrated in FIG. 6, the valve transmission / reception unit 120 transmits a wireless light line-of-sight signal during a predetermined interval in response to a signal from the control module CPU transmission / reception unit 220. The wireless light line-of-sight signal transmitted by the valve transmission / reception unit 120 is a series of on and off cycles indicating whether or not the transmission unit is transmitting light, and these correspond to binary digital signals. This mechanism by which the valve transceiver transmits the wireless light line-of-sight signal may be interpreted as a series of digital on / off signals corresponding to the data being transmitted. Once communication between the control module CPU transceiver 220 and the valve transceiver 120 is established, the interval between the communication signals may be in the range of about 20 seconds to about 5 seconds. In one or more specific embodiments, the signal interval or duration of the transceiver may be about 10 seconds.

  As will be described in more detail below, the control module 200 includes a CPU 210 connected to a CPU transceiver 220 that can transmit and receive wireless light line-of-sight signals. When communication between the CPU transmission / reception unit 220 and the valve transmission / reception unit 120, more specifically, line-of-sight communication, is established, the CPU transmission / reception unit 220 outputs a signal and waits for a response from the valve transmission / reception unit 120. When the response from the valve transmission / reception unit 120 is not sent, the CPU transmission / reception unit 220 sends a signal again after a predetermined time. With this configuration, the valve transceiver 120 does not send a signal continuously unless requested by the CPU 210, so that the battery life is maintained. This is important. This is because the gas delivery device and gas source most of its time has elapsed in delivery and storage before being placed in the gas delivery system. If a transmission is made to establish communication with the control module throughout this time, battery life will be significantly consumed.

  The valve processor 122 may include a link maintenance instruction that determines whether the interval should be increased or decreased. As shown in FIG. 6, when a valid link is established between the valve transmission / reception unit 120 and the CPU transmission / reception unit 220, the valve processing unit 122 executes a link maintenance command to increase the interval or the interval. Reduce.

As more clearly shown in FIG. 1, valve assembly 100 and gas source 50 are in communication with control module 200, which is in communication with a gas delivery mechanism. The gas delivery mechanism shown in FIG. 1 includes a ventilator 400 with an associated breathing circuit 410. The control module 200 may include a CPU 210 and a CPU transmission / reception unit 220 that communicates with the circuit 150 via the valve transmission / reception unit 120. The control module 200 also includes a CPU memory 212 that communicates with the CPU transceiver 220 that stores patient information and information such as information or data received from the valve transceiver 120. The control module 200 may also include support circuitry. The CPU 210 may be any form of computer processing device that can be used to control various operations and sub-processing devices in an industrial environment. CPU memory 212 is a computer readable medium, such as random access memory (RAM), read only memory (ROM), floppy disk, hard disk, etc., in any form of local or remote digital storage. There may be one or more readily available memories, typically coupled to CPU 210. Support circuitry may be coupled to CPU 210 to assist control module 200 in a conventional manner. These circuits include a cache, a power supply, a clock circuit, an input / output circuit, a subsystem, and the like. The CPU 210 may also include a speaker 214 that issues an alarm. Alternatively, the alarm may be visually displayed on the display unit. As shown in FIG. 1, the control module 200 may also include a regulator 110 and optionally a pressure gauge and a flow meter to measure and / or control the gas flow from the gas source 50.

  In one or more embodiments, the CPU transceiver 220 is located in the cover 225 (shown more clearly in FIG. 7). The cover 225 is part of a cart 500 (shown more clearly in FIG. 7) in which the control module 200 is located. The cover unit 225 of one or more embodiments communicates with the control module 200. Communication between the cover unit 225 and the control module 200 may be established wirelessly or by wire. As will be discussed in more detail below, the valve assembly 100 including the valve 107, the circuit 150, and the gas source 50 attached to the valve 107 is connected to the CPU transceiver 220 within the line of sight of the CPU transceiver 220 on the cart 500. Placed close together. When the CPU transmission / reception unit 220 is appropriately configured so that communication is established between the valve transmission / reception unit 120 and the CPU transmission / reception unit 220, as shown more clearly in FIG. It is located immediately above the part 120. In one or more alternative embodiments, the CPU transceiver 220 may be located on the CPU 210.

  CPU 210 communicates with a plurality of gas sensors 230 that measure the concentration of a sample of gas taken through sample line 232 and sample line inlet 280 located in control module 200 (shown more clearly in FIG. 1). You can do it. As discussed in more detail, the sample line 232 provides a sample of gas from the breathing circuit 410 of the ventilator 400 when the ventilator is in fluid communication with the control module 200 and gas is being delivered to the ventilator. Take out. The CPU 210 includes a sample flow sensor 234 that detects the flow of the sample taken through the sample line 232, a pump 236 that takes the sample into the flow sensor 234 through the sample line 232, and a sample pump 236 through the sample line 232. , A sample flow sensor 234, and a zero valve 238 that controls the flow of sample to the plurality of CPU sensors. The sample line 232 may also include a drain 233 that collects water or liquid from the sample.

  The control module 200 may also include a delivery module 260 that regulates the flow of gas from the gas source 50 to the ventilator 400. The delivery module 260 may include a pressure switch 262 that determines that gas supply pressure is present, a pressure shut-off valve 264, a proportional valve 266, and a delivery flow sensor 268. The delivery module 260 may also include a backup on / off switch 269. Details of how the delivery module delivers gas to the ventilator circuit are described in US Pat. No. 5,558,083, which is hereby incorporated by reference in its entirety. And

The ventilator 400 shown in FIG. 1 is in fluid communication with the control module 200 via the infusion tube 440 and in electrical communication via the infusion module cable 450. The control module 200, more specifically the CPU 210, is in fluid communication with the ventilator 400 via the sample line 232. The ventilator 400 may include a breathing circuit 410 having an exhalation branch 414 and an inspiration branch 412 that are in fluid communication with the ventilator 400. The inspiratory branch 412 may be in fluid communication with the humidifier 420, which is in fluid communication with the ventilator 400 via the infusion module 430. The inspiratory branch 412 carries gas to the patient, and the expiratory branch 414 carries the gas exhaled by the patient to the ventilator 400. The infusion module 430 shown in FIG. 1 is in fluid communication with the gas source 50 via the infusion tube 440 and is in electrical communication with the delivery module 260 via the infusion module cable 450, thereby delivering the delivery module 260. Can detect and regulate the flow of gas from the gas source 50 to the ventilator 400. Specifically, the injection module 430 is in fluid communication with the gas source 50 via the injection tube 440, which includes the pressure switch 262, the pressure shut-off valve 264, the proportional valve 266, and the flow sensor 268 of the delivery module 260. , And one or more of the backup switches 269 in fluid communication. Infusion module 430 may be in electrical communication with delivery module 260 via infusion module cable 450. The inspiratory branch 412 of the ventilator 400 may include a sample tee 416 that facilitates fluid communication between the inspiratory branch 412 of the respiratory circuit and the sample line 232.

  As discussed above, to facilitate movement of the gas source 50 and gas delivery device to a patient in need of gas therapy, the control module 200 is placed in a cart 500 as shown in FIGS. Can be attached or attached. The gas source 50 and the valve assembly 100 attached to the gas source 50 may be placed in the vicinity of the control module 200 on the cart 500. More specifically, as shown in FIG. 7, in the gas source 50, the valve transmission / reception unit 120 is close to the CPU transmission / reception unit 220, and a line-of-sight path is established between the valve transmission / reception unit 120 and the CPU transmission / reception unit 220. As shown in FIG. In this configuration, the CPU 210 detects the presence of the circuit 150 and thus the gas source 50 via the CPU transceiver 220.

  As shown in FIGS. 7-9, the gas delivery device may include multiple valves, each attached to a single gas source. In such embodiments that utilize the second gas source 60 in conjunction with the second valve assembly 101, the second valve assembly 101 may be configured such that when the gas source 60 is mounted on the cart, It is placed in the vicinity of the CPU transceiver and within the line of sight. The second CPU transceiver 222 establishes communication with the second valve assembly 101 and thereby detects the presence of the second gas source 60. In the embodiment shown in FIGS. 7 to 9, the second CPU transmission / reception unit 222 may be disposed on the cart cover unit 225. In one or more alternative embodiments, the second CPU transceiver 222 may be located on the CPU 210.

  As shown in FIG. 8, the cart 500 includes an optional small container 510, a mount 512 that supports the control module 200 on the cart 500, at least one retaining bracket 520, at least one attachment strap 530, and an auxiliary device. An auxiliary bracket 540 that holds a gas source, a plurality of casters 550, and a caster lock lever 560 disposed on each of the plurality of casters 550 may be included. The cart 500 may include a mount 570 that attaches the control module 200 to the cart.

The exemplary control module 200 shown in FIGS. 10-12 includes components of gas (eg, NO, O ₂ , NO ₂ ) being delivered from the gas source 50 to the ventilator 400, the concentration of each component, and one A display unit 270 is provided that provides the user with a visual indication as to whether communication has been established with the gas source. Other information may also be displayed to the user. Further, a visual warning may be displayed on the display unit 270. The control module 200 may also include a main power display unit 272 that displays whether the control module is connected to an AC / DC power source and / or a power source such as a battery. The control module 200 may also include a control wheel 274 that allows a user to manipulate various displays or information displayed on the display. An infusion module tube outlet 276 may be located in the control module to provide fluid communication between the delivery module 260 and the infusion module 430. An infusion module cable port 278 may also be provided in the control module to electrically communicate the delivery module 260 and the infusion module 430. The control module 200 shown in FIGS. 10-12 also includes a sample line inlet 280 that is in fluid communication with the sample line 232 and the inspiratory branch 412 of the ventilator 400. In the embodiment shown in FIGS. 10-12, the drain 233 is located near the sample line inlet 280 of the control module.

  FIG. 11 shows a rear view of the control module 200 and shows a plurality of inlets. In the illustrated embodiment, two gas inlets 282, 284 are provided that connect the control module 200 to the gas source 50, and an auxiliary inlet 286 that connects the control module 200 to an auxiliary gas source that may include a gas such as oxygen. One is provided. A power port 288 is also provided on the back of the control module to connect the control module to an AC / DC power source.

  The control module 200 provides patient information such as, for example, the patient's identity, the type and concentration and dose of the gas administered to the patient, the disease or condition or reason for treatment of the patient being treated with the gas, the patient's pregnancy period, and the patient's weight. It may also include input means 290 that allows the user to input. The input means 290 shown in FIG. 10 includes a keyboard integrated with a display unit. In one or more alternative embodiments, the input means may include a port, such as a USB port, connecting an input mechanism known in the art, such as an external keyboard. Information input via the input unit 290 is stored in the CPU memory 212.

  The control module 200 and valve assembly 100 may be utilized in the gas delivery system 10 to improve patient safety. Specifically, the safety benefits of the gas delivery system described herein include detecting unidentified medicines or gas sources, expired medicines or gases, wrong gas types, wrong gas concentrations, etc. There is. Furthermore, the gas delivery system embodiments described herein also improve the efficiency of gas therapy.

FIG. 13 is a block diagram illustrating a sequence of a method for preparing a gas delivery device including an assembly 100 and its use within the gas delivery system 10 according to one or more embodiments. As shown in FIG. 13, a gas source 50 in the form of a container, such as a gas cylinder, that holds gas is provided and filled with gas (700), and the valve assembly 100 as described herein. The gas delivery device 10 is assembled by attaching (710) to prepare for use of the gas delivery device. These steps may be performed by a gas supplier or manufacturer. As described herein, gas data relating to the gas charged in the gas source 50 is input to the valve memory 134 (720). The gas data may be entered into the valve memory 134 by a gas supplier or manufacturer that supplies the gas source 50 and assembles the gas delivery device. Alternatively, a medical facility such as a hospital may input gas data to the valve memory 134 after the gas delivery device has been transported to the hospital or medical facility (730). The gas delivery device is placed in the cart 500 (740), and communication between the CPU transceiver 220 and the valve transceiver 120 is established (750). The gas data stored in the valve memory 134 is transmitted to the control module 200 via wireless light line-of-sight communication between the valve transmission / reception unit 120 and the CPU transmission / reception unit 220 (760). The CPU 210 compares the gas data with the patient information input to the CPU memory 212 (770). Patient information may be input to the CPU memory after the gas data is input to the CPU memory 212. Patient information may be input to the CPU memory before the gas delivery device is placed in the cart or before communication between the CPU transceiver 220 and the valve transceiver is established. In one or more alternative embodiments, patient information may be entered into CPU memory 212 prior to gas delivery device preparation or transport to a hospital or facility. Next, the CPU 210 compares the gas data with the patient information (780). Once the gas data and patient information match, gas is administered to the patient through a gas delivery mechanism, such as a ventilator (790). If the gas data and patient information do not match, an alarm is issued (800). As described elsewhere herein, the alarm may be audible and emitted from speaker 214 and / or visually displayed on display 270.

  The gas delivery system described herein simplifies the setup procedure by establishing communications using wireless line-of-sight signals. The user does not need to ensure that all cables are properly connected and is free to install a new gas source in the cart without removing the cable connecting the control module 200 and the valve assembly 100 or circuit 150. it can. This reduces the set time and the time taken to correct errors that may have occurred during the set operation. The control module 200 and circuit 150 are further designed to automatically transmit and detect information to establish the correct unexpired gas delivery with the correct concentration. In one or more specific embodiments, such automated operation prevents the use of the gas delivery system by preventing gas flow to the patient without user intervention.

  In one or more embodiments, after the communication between the valve transceiver unit 120 and the CPU transceiver unit 220 is established, the valve processor 122 transmits the gas data stored in the valve memory 134 via the valve transceiver unit 120. Instructions transmitted to the CPU transceiver 220. CPU 210 includes a command for storing gas data received from CPU transceiver 220 in the CPU memory. The CPU 210 also includes an algorithm that compares the gas data with patient information input to the CPU memory 212. If the gas data and patient information do not match, the CPU 210 includes a command to issue an alarm. The alert may be audible, visual, or both to alert the user that the gas contained in the gas source is different from the gas to be administered to the patient. For example, as shown in FIG. 12, if the gas data includes a gas expiration date, the CPU memory 212 includes information regarding the current date, and the CPU 210 compares the gas expiration date with the current date. If the gas expiration date is earlier than the current date, the CPU 210 issues an alarm. The alarm may be issued from one or both of the speaker 214 and the display unit 270. In one or more embodiments, the CPU 210 may include instructions that the delivery module 260 interrupts or prevents gas delivery. In one or more embodiments, the CPU 210 includes an instruction to turn off the backup on / off switch 269 once the delivery module 260 starts or continues to deliver gas. The detection result of the expired gas by the CPU 210 may be stored in the CPU memory 212.

  If the gas data includes gas concentration information or data, the CPU memory 212 includes information regarding the desired concentration of gas to be administered to the patient. The control module 200 may be configured to alert the user that the gas contained in the gas source has an incorrect concentration or a concentration that does not match the desired gas concentration. For example, the user may input a concentration of 800 ppm into the CPU memory 212, and this concentration is compared with the gas concentration transmitted from the valve memory 134 to the CPU memory 212. As shown in FIG. 12, the CPU 210 includes a command for comparing the gas concentration of the gas with the concentration input by the user. If the gas concentration does not match the concentration entered by the user, the CPU 210 issues an alarm. The alert may be audible and / or visual. In one or more embodiments, the CPU 210 may include instructions that the delivery module 260 interrupts or prevents gas delivery. In one or more embodiments, the CPU 210 includes an instruction to turn off the backup on / off switch 269 once the delivery module 260 starts or continues to deliver gas. The detection result of the wrong concentration gas may be stored in the CPU memory 212.

In one or more embodiments, the control module 200 may be configured to detect multiple valves and detect whether the multiple valves are open. This configuration eliminates waste. This is because the user is warned that both valves are open and therefore unnecessary gas is being delivered via delivery module 260. In addition, such a configuration improves safety because the problems associated with two regulators being simultaneously pressurized and connected to the delivery module 260 are avoided. In one or more embodiments, the cover portion 225 of the control module 200 may include a second CPU transceiver 222, and the CPU 210 may include the second CPU transceiver 222 from the second valve assembly 101. More specifically, a command for detecting a wireless light line-of-sight signal from the second valve transmitting / receiving unit 121 may be included. The CPU 210 also includes a command to detect whether both valve assemblies 100, 101 are open or have a valve condition including an open position when the second valve assembly 101 is detected by the CPU transceiver 222. It's okay. In operation, the first valve assembly 100 includes a circuit having a valve processing unit having a command for transmitting an open position or a closed position via the first valve transmitting / receiving unit 120. Similarly, the circuit of the second valve assembly includes a valve processing unit having a command for transmitting an open position or a closed position via the second valve transmission / reception unit 121. The first CPU transmission / reception unit 220 and the second CPU transmission / reception unit 222 are transmitted from the first valve transmission / reception unit 120 and the second valve transmission / reception unit 121 via the wireless light line-of-sight signal transmitted by both transmission / reception units. Detect the valve state of each valve assembly. The CPU 210 instructs the CPU transceivers 220 and 222 to collect the valve states of both valve assemblies 100 and 101 and store the valve states in the memory. The CPU 210 then compares the valve status information from the first valve assembly 100 and the second valve assembly 101, and if both of the valve statuses include the open position, the CPU 210 issues an alarm. . The alert may be audible and / or visual. In one or more embodiments, the CPU 210 may include instructions that the delivery module 260 suspends or prevents further delivery of gas through either the first valve assembly or the second valve assembly. In one or more embodiments, the CPU 210 includes an instruction to turn off the backup on / off switch 269 once the delivery module 260 starts or continues to deliver gas. A detection result that a plurality of valve assemblies have a valve state that is open or has a valve state that includes an open position may be stored in the CPU memory.

  In one or more embodiments, the control module 200 may be configured to alert the user when a desired dose has been delivered. In such embodiments, patient information entered into CPU memory 212 may include dose information or a dose to be administered to the patient. The valve processing unit 122 may include a command for transmitting the gas usage information from the valve memory 134 including the amount of gas to be sent to the CPU memory 212 via the valve transmission / reception unit 120. Alternatively, the valve processing unit 122 may include a command for transmitting the time during which the valve 107 has been opened or has a valve state including an open position to the CPU memory 212 via the valve transmission / reception unit 120. CPU 210 may include instructions for comparing dose information entered by the user and stored in CPU memory 212 with gas usage information. CPU 210 may include an instruction to issue an alarm when dose information and gas usage information are matched. The CPU 210 may include instructions to alert the user to close the valve or, more specifically, the actuator 114, when the dose is delivered, issuing the same or different alarms. In one or more embodiments, the CPU 210 may include instructions that the delivery module 260 suspends or prevents further delivery of gas. In one or more embodiments, the CPU 210 includes an instruction to turn off the backup on / off switch 269 once the delivery module 260 starts or continues to deliver gas.

Further, the control module 200 may be configured to alert the user that the detected valve is closed or remains closed and no gas is being delivered to the patient. This configuration speeds up the treatment time and increases hospital efficiency. In such an embodiment, the valve processing unit 122 may include a command for the valve transmitting / receiving unit 120 to transmit the valve state to the CPU 210 via a wireless light line-of-sight signal. The CPU 210 collects information on the valve state and issues a command to issue an alarm when the dose information is set in the CPU memory 212 or other input is input to start the treatment, but the valve state includes a closed position. Including.

  The control module 200 may be configured to alert the user that a valve assembly or gas source has not been detected. In such an embodiment, the CPU 210 includes a command for detecting the presence of a wireless light line-of-sight signal from another transmitting / receiving unit, for example, the valve transmitting / receiving unit 120. The CPU 210 may include an instruction to issue an alarm when an input such as dose information for starting gas delivery is input to the CPU memory 212 but no signal from another transmission / reception unit is detected. Similarly, the control module 200 alerts when communication between one or both of the CPU transceivers (or a plurality of CPU transceivers) 220 and 222 and one or both of the valve transceivers 120 and 121 is interrupted during gas delivery. May be configured to emit. In such an embodiment, the CPU 210 continuously detects the presence of signals from other transmission / reception units, and inputs such as dose information for starting gas delivery are input to the CPU memory 212. May include a command to issue an alarm when a signal from another transceiver is not detected.

  The CPU 210 may include instructions that warn the user if the sensor of the control module 200 must be calibrated to accurately deliver gas to the patient. Further, the CPU 210 may include instructions for correlating gas usage information from the circuit 150 of the valve assembly 100 with patient information input to the CPU memory 212. The CPU 210 may also have instructions for storing gas usage information and patient information associated with each other in the CPU memory 212. The valve processing unit 122 may also include a command for detecting patient information from the CPU memory 212. Specifically, the valve processing unit 122 may include instructions for collecting patient information from the CPU transmission / reception unit 220 via the valve transmission / reception unit 120 and storing the collected patient information in the valve memory 134. In such embodiments where information from the CPU 210 is collected and stored in the valve memory 134, the CPU 210 sends and receives patient information and / or patient information and gas usage information associated with each other from the CPU memory 212. A command to be transmitted to the valve transmitting / receiving unit 120 via the unit 220 may be included. The valve processor 122 may also include instructions for correlating the gas usage information with the collected patient information and storing the correlated gas usage information and the collected patient information in the valve memory 134. Alternatively, the valve processing unit 122 may include an instruction to collect patient information and gas usage information associated with each other from the CPU 210. Information related to each other may be used to charge the user for each patient. In addition, information related to each other may be used as patient demographic data, which allows hospitals and other facilities to create budget reports, seek use per department, seek use per patient diagnosis, It can help to link the use of multiple gas sources with individual patients.

A second aspect of the invention relates to a method for administering a therapeutic gas to a patient. The method includes supplying gas with a gas source. The gas source may be prepared by a supplier to include a gas having a predetermined component, concentration, and expiration date. The method may include providing a valve assembly 100 attached to the gas source 50 to administer the gas contained in the gas source 50 to the patient. The method may include inputting gas data to the valve memory 134 that may include gas components, gas concentrations, and gas expiration dates. In one or more embodiments, the supplier may enter gas data directly into the valve memory 134. In other variations, the gas data is provided in the form of a bar code located at the gas source. In such an embodiment, the method provides a scanning device that communicates with the data input 108, collects gas data information by scanning a bar code, and stores the gas data via the data input 108 in the valve memory 134. To communicate to. These steps may be repeated for the second gas source. The gas source (or gas sources) with the valve assembly attached may be transported to a facility such as a hospital for administration to a patient. The gas source (or gas sources) is then attached to the cart 500 and secured by the retention bracket 520 and the attachment strap 530. The method includes establishing communication between the valve transceiver unit disposed on each valve and the CPU transceiver units 220 and 222. Establishing communication may include placing the valve assembly 100 within line of sight of at least one of the CPU transceivers 220, 222. As described elsewhere herein, communication may be established by instructing the valve transceiver to send a wireless light line-of-sight signal to the CPU transceivers 220, 222. The method may include instructing the valve transceiver 120 to transmit wireless light line-of-sight signals at predetermined intervals, as described elsewhere herein.

  The method may include inputting patient information into the CPU memory 212. This step may be performed before or after the gas source (or gas sources) is mounted on the cart. The method may specifically include inputting patient information, such as dose information, into the valve memory 134. The method collects gas data from the valve memory 134, compares the gas data with patient information according to an algorithm, and adjusts the delivery of gas to the patient by determining according to the algorithm whether the gas data and patient information match. Including doing. Regulating gas delivery may include opening the actuator 114 of the valve 107 so that gas can flow from the inlet 104 to the outlet 106. After the dose is administered, the method may include correlating the gas usage information and the patient information. The method may also include recording patient information, gas usage information, and / or correlated patient information and gas usage information in CPU memory 212 and / or valve memory 134. In one or more variations, the method uses patient information, gas usage information, and / or patient information and gas usage information related to each other to identify a voucher for use of gas by an individual patient. May include creating.

  Throughout this specification, references to “an embodiment,” “some embodiments,” “one or more embodiments,” or “an embodiment” are related to an embodiment. This means that any particular feature, structure, material, or property described in this section is included in at least one embodiment of the invention. Thus, in various places throughout this specification, “in one or more embodiments”, “in some embodiments”, “in certain embodiments”, or “in embodiments”. The appearance of such expressions does not necessarily refer to the same embodiment of the invention. Furthermore, the particular features, structures, materials, or characteristics may be incorporated into one or more embodiments in any suitable manner.

  Although the invention has been described herein with reference to particular embodiments, it will be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the method and apparatus of the present invention without departing from the spirit and scope of the invention. Accordingly, it is intended that the present invention encompass modifications and variations that are within the scope of the appended claims and their equivalents.

Claims (18)

A gas delivery device for administering therapeutic gas from a gas source,
A valve attachable to the gas source, including a fluidly communicating inlet and outlet; and a valve actuator that opens and closes the valve to pass gas to the control module via the valve;
A circuit, the circuit comprising:
A memory for storing gas data including one or more of gas identification information, a gas expiration date, and a gas concentration;
A gas delivery apparatus comprising: a processing unit that communicates with the memory and a transmission / reception unit that transmits a wireless light line-of-sight signal and transmits the gas data to the control module that controls gas delivery to a target. .   The gas delivery device of claim 1, wherein the valve further comprises a data input that communicates with the memory that allows a user to input the gas data into the memory.   The gas data is input to the data input unit by a user-operated scanning device that is given by a barcode arranged in the gas source and communicates with the data input unit. Gas delivery device.   The said valve | bulb is equipped with a power supply, The said transmission / reception part transmits the said radio | wireless light line-of-sight signal to the said control module periodically, The said signal is interrupted | blocked in the time when the said signal is not transmitted. The gas delivery device described in 1.   5. The gas delivery device according to claim 4, wherein the time during which the signal is not transmitted is configured to be approximately 10 seconds. A gas delivery system comprising:
A gas delivery device according to claim 1;
A control module in fluid communication with the outlet of the valve and the ventilator, the control module comprising:
A CPU transceiver for receiving a line-of-sight signal from the transceiver;
A CPU that communicates with the CPU transceiver and includes a CPU memory;
The gas transmission system, wherein the transmission / reception unit transmits gas data to the CPU transmission / reception unit for storage in the CPU memory.   The valve includes a timer including a calendar timer and an event timer, the CPU memory stores a date and time when the valve is opened and closed and a time during which the valve is opened, and the transmission / reception unit stores the time for storing in the CPU memory. The gas delivery system according to claim 6, wherein a valve opening / closing date and time is transmitted to the CPU transmission / reception unit.   The gas delivery system according to claim 6, wherein the control module further includes an input unit that inputs patient information to the CPU memory, and a display unit.   9. The gas delivery system according to claim 8, wherein the CPU compares the patient information input to the CPU memory via the input means and the gas data from the transmission / reception unit. The gas delivery system according to claim 9, wherein the CPU includes an alarm that is activated when the patient information input to the CPU memory and the gas data from the transmission / reception unit do not match. . Receiving gas data selected from one or more of gas identification information, gas expiration date and gas concentration from a valve connected to the gas source via a wireless light line-of-sight signal;
Compare the gas data with patient information entered by the user,
Coordinate the provision of treatment to the patient by the medical device via the wireless light line-of-sight signal,
Selecting a treatment to be provided to the patient based on the received patient information;
A memory comprising instructions for causing a processing unit to control the provision of the selected treatment to the patient. Receiving a first valve state selected from a first open position and a first closed position from a first valve connected to a first gas source via a first wireless light line-of-sight signal;
Receiving a second valve state selected from a second open position and a second closed position from a second valve connected to a second gas source via a second wireless light line-of-sight signal;
Comparing the first valve state and the second valve state;
If the first valve state includes the first open position and the second valve state includes the second open position, the memory has an instruction to cause the processing unit to issue an alarm. The memory of claim 11, comprising:   A command to cause the processing unit to terminate the provision of treatment when the first valve state includes the first open position and the second valve state includes the second open position; The memory of claim 12, wherein the memory comprises. A method of administering therapeutic gas to a patient comprising
Establishing communication with a gas delivery device comprising a first memory containing gas data via a transceiver;
Comparing the gas data with patient information stored in a second memory;
Coordinating the delivery of treatment to the patient by the gas delivery device via a wireless light line-of-sight signal,
Selecting a treatment to be provided to the patient based on the comparison of the gas data and the patient information;
Controlling the delivery of the selected therapy to the patient.   15. The method of claim 14, further comprising discontinuing providing the selected treatment to the patient based on the comparison of the gas data and the patient information.   The method of claim 14, further comprising issuing an alert based on the comparison of the gas data and the patient information.   The method of claim 14, further comprising inputting the gas data into the first memory.   The method of claim 14, further comprising inputting the patient information into the second memory.