CN2453947Y

CN2453947Y - Medical oxygen-uptaking timer

Info

Publication number: CN2453947Y
Application number: CN 00260442
Authority: CN
Inventors: 宋从周; 李志华
Original assignee: TIANJIN 4TH CENTER HOSPITAL
Current assignee: Tianjin Yimei International Trading Co., Ltd.
Priority date: 2000-11-28
Filing date: 2000-11-28
Publication date: 2001-10-17
Anticipated expiration: 2010-11-28

Abstract

The utility model relates to a medical oxygen-absorbing timer which is composed of an oxygen-absorbing switch, a magnetic switch, a timing circuit, a displaying circuit, a driving circuit, and a battery, wherein, the oxygen-absorbing switch can be used for synchronously opening and stopping the oxygen absorbing operation and the timing operation. The timing circuit is composed of a key, a crystal resonator, a storage unit, and a micro computer CPU. The displaying circuit and the driving circuit are composed of liquid crystal displaying modules. The medical oxygen-absorbing timer can realize that the oxygen absorbing operation and the timing operation are synchronously carried out. The power of the medical oxygen-absorbing timer is supplied by the battery, and the power consumption is in milli-ampere stage. When people replace the battery, the timing data of the medical oxygen-absorbing timer can not be lost. The medical oxygen-absorbing timer has cipher code setting and resetting functions.

Description

Medical oxygen uptake time set

This utility model relates to a kind of medical oxygen uptake time set, is used for clinical patients at whole oxygen inhalation therapy process, the device that oxygen absorbed is carried out timing.

Offer in the employed oxygen inhalation therapy device of patient in hospital, the size indication of oxygen flow only is provided, and the also product of non-complete sale of employed device, but assemble by some parts.Therefore, the patient is unclear on the one hand, also can't understand and oneself inhale how much oxygen actually; Also exist the discontinuity of oxygen inhalation therapy process on the other hand, as: the patient feels good, and can stop oxygen uptake.Like this, no matter be by oxygen absorbed what, or by the length of oxygen time, all give hospital accurately clearing also answering the patient has strictly according to the facts caused difficulty, make the dispute that takes place frequently between patient and the hospital.

Chinese patent CN99253677.4, " rotating cylinder wet type oxygen intake measuring device " provided a kind of clinical oxygen inhalation therapy process, device that oxygen absorbed is carried out cummulative metering of being used for.

Chinese patent CN2136670, what provide is a kind of self-timing oxygen uptake machine.

Chinese patent CN2236340, what provide is a kind of oxygen bar multifunction oxygen inhalation equipment.

Chinese patent CN2287721, what provide is the dynamic display instrument of a kind of oxygen uptake.

The purpose of this utility model is to provide a kind of medical oxygen uptake time set, the synchronous self-clocking when realizing patients accepting oxygen inhalation, and automatically shutting down synchronously when stopping oxygen uptake.

Technical conceive of the present utility model: because of existing the interference from human factor that to consider (problems such as outage that cause as the contact that can be subjected to non-medical personnel's counter plate inevitably), the discontinuity of timing object is (as the interruption of patient's oxygen uptake process, and the randomness of timing object (receiving different patients) length of the time that different conditions of patients are caused), as same sick bed.Therefore this device is different from general time set, and must correspondingly set up the function that the setting, zero clearing, replacing etc. of password are realized by circuit and program; In addition owing to will be applicable to respectively and being connected of Central oxygen-supply or oxygen cylinder, and this special field of employment, ward, and must accomplish in light weight, volume is little, low in energy consumption.

This utility model relates to a kind of medical oxygen uptake time set, and this device is by the oxygen uptake switch and the magnetic switch that make oxygen uptake and timing open synchronously, stop, timing, demonstration and drive circuit, and battery is formed; Described oxygen uptake switch links to each other with ventilation channel, and built-in strong magnets, and the change in location of oxygen uptake switch is attached changes of magnetic field, makes the state of magnetic switch change, and then triggering timing begins synchronously, and described magnetic switch is selected reed switch relay for use; Described timing circuit is made of button K1-K4, crystal oscillator, memory element EEPROM (X24C08), central processor CPU (89C2051), button K1-K4 transports to the P3.0-P3.3 end of CPU, crystal oscillator is transported to XTAL1, the XTAL2 end of CPU, the A0-A2 end of memory element EEPROM and VSS end ground connection, SCL end and SDA end are connected to the P1.4-P1.5 end of CPU respectively, and the triggering timing signal is transported to the P1.7 end of CPU; Described demonstration and driving are made of LCD MODULE (LCM103), and the P1.0-P1.3 end of CPU is transported to CS, RD, WR, the DATA end of LCD MODULE (LCM103), and the P3.4 end is transported to INT and held; By opening the oxygen uptake switch, connect oxygen, and the magnetic switch state is changed, and then synchronous triggering timing circuit.

This device is set up low-voltage and is detected and audible alarm circuit, and described low-voltage detection circuit is selected monitoring chip (MAX813L) for use, and its PFO end links to each other with the P1.6 end of CPU.

Effect of the present utility model is: volume is little, in light weight, can be suspended on oxygen channel or oxygen cylinder delivery outlet; Adopt magnetic switch as the triggering timing device, stably realize carrying out synchronously of oxygen uptake and timing; Adopt No. 5 alkaline batteries of four joints, the reason power down does not cause losing of chronometric data, and reduces the power consumption of complete machine; The password zero clearing realizes that specific personnel carry out special operation ability zero clearing to device; Password setting is avoided non-medical personnel's hack chronometric data, and the removing of password chronometric data when forgeing; Multiplexing button is set, realizes that complex way enters and withdraw from the data cleared condition; Setting up low-voltage detects and warning function; The data that are provided with after the power down keep; It is oscillation source that timing circuit adopts crystal oscillator, accurate timing.

Fig. 1 this utility model schematic appearance.

Fig. 2 this utility model user mode sketch map.

Fig. 3 this utility model circuit theory diagrams.

Fig. 4 this utility model circuit block diagram.

Fig. 5 this utility model program flow diagram.

Description of drawings: 1 magnetic switch, 2 Magnet, 3 oxygen switchs, 4 buttons, 5 liquid crystal displays.

Now in conjunction with the accompanying drawings structure of the present utility model and principle, operation and use are elaborated:

One structure and principle

As shown in the figure, an end of ventilation channel can connect according to the delivery outlet mode of oxygen channel or oxygen cylinder, and the other end is connected with the input port of humidification bottle, gives patient's oxygen supply by the delivery outlet of humidification bottle again.

Before this utility model inserts ventilation channel, alkaline battery four joints (6.0V) of at first packing into No. 5, and with the zero clearing password setting, at this moment, the video data of LCDs is 0000-00-00.

This utility model is inserted ventilation channel, during use, at first with the oxygen output tube of humidification bottle away from the patient, pull the oxygen uptake switch from vertical position to the level position, notice that simultaneously the flow of observing humidification bottle shows, until reaching clinical required oxygen flow.When the oxygen uptake switch departs from vertical position, owing to be built in the formed changes of magnetic field of strong magnets of oxygen uptake switch, make magnetic switch become open-circuit condition from closure state, the change of magnetic switch state, expression oxygen uptake timing begins, and produce the synchronous triggering signal that an oxygen uptake timing begins, and keep this state constant, after the P1.7 termination of CPU in the time set is received this signal, pick up counting immediately, and current chronometric data and original chronometric data last time of storing added up, produce the timing result that adds up (if pick up counting for the first time, then last time, counting was 0).The result that timing adds up, deliver to LCD MODULE through the P1.0-P1.3 end on the one hand, hold through P1.4-P1.5 on the other hand, it is stored the radix that adds up as next timing, whether the P1.7 by CPU holds the state of differentiating oxygen uptake time switch K5 to change then, if do not change, then repeat the process of the above-mentioned timing that adds up every a second; If oxygen uptake time switch K5 is an off state, then the counting of timing stops, and waits for that oxygen uptake time switch K5 connects next time, begins the new next time timing that adds up again.

The action of oxygen uptake switch and magnetic switch is synchronous, and the state that opens or closes of magnetic switch then makes timing be in beginning or timing maintenance.For reach timing and oxygen uptake synchronously, corresponding close stance (vertical position) and open position (level position), arrangement magnetic switch (selecting reed switch relay for use) as much as possible, the scope that makes its control just stops timing and oxygen uptake as long as close switch as far as possible greatly; Just pick up counting and oxygen uptake as long as open switch, and can be by the size adjustment oxygen uptake flow of switch.The actual connection: oxygen is through air relief valve, again through time set, again through humidification bottle, at last to the patient.

Because the frequency stability of crystal oscillator can reach 10 ^-7So the accuracy of the count pulse that is produced can reach every month timing cumulative errors and be no more than 5 minutes, in timing circuit, take the oscillation source of crystal oscillator as timing circuit, its output X1, X2 are connected to XTAL2, the XTAL1 end of CPU respectively; Central processing unit uses 89 serial cpu chips, realizes setting, change and the zero clearing of password, and button K1-K4 is through the P3.0-P3.3 end of resistor chain to CPU; Adopt electricity wipe and power down after still can keep the memory carrier of the eeprom chip of data as password and critical data; When battery voltage drop 4.0V, low-voltage detects monitoring chip (MAX813L) by the adjusting resistance between VCC, the GND, and the P1.6 that signal is transported to CPU holds, and sends instruction by CPU, driving pressure electroceramics buz sounding alarm.

Two operations and use

As shown in the figure, by the pipeline union joint, directly insert the oxygen hose trace header and get final product.The device back side is provided with an oxygen uptake switch, when the oxygen uptake switch is pulled to the level position from vertical position, will have oxygen to pass through in the pipeline, and when switch was pulled to the level position, the oxygen uptake flow was to maximum.The size of oxygen flow is on-off control thus, simultaneously along with switch is pulled to horizontal direction, will trigger magnetic switch and pick up counting, therefore oxygen uptake and timing are synchronous, timing with each second step-length add up, otherwise, when pulling switch to vertical position from the level position, oxygen uptake and timing stop simultaneously.The difference of timing supplementary oxygen and timing hold mode is: minute two digits before sudden strain of a muscle in a second is arranged, when a second timing was flashed, the oxygen uptake timing was dodged when stopping when second, timing stops.It should be noted that during use that the humidification bottle switch that device connects later should open fully, the oxygen uptake switch should slowly be pulled, and checks the oxygen flow of humidification bottle simultaneously, till satisfying the demand.

As shown in the figure, the set A of panel, B, C, D operated key are in order to the setting of finishing password, the zero clearing of chronometric data.All operations are all carried out when time set stops, if timing is carried out, all be invalid to the operation that device is carried out this moment, and promptly time set is not done any reaction to this operation.

At first the oxygen uptake switch is pulled to position of rest, at this moment, device can send the sound, and expression stops timing, dodges with the second of time to stop to flash.After clear and definite this operation, press A, twice on D two keys (each button, device all postback out the sound for prompting) simultaneously, the equal vanishing of five digit number of device liquid crystal display screen, and the first numeral is flashed.The B key is digital accumulation key (whenever press once, the first numeral of five digit number just adds up successively); The C key is digital mobile key (whenever press once, the numeral of flashing moves right successively).The C key is pressed the B key after selecting to finish again, and the numeral of then flashing just adds up successively.After the change numeral was finished, promptly password setting finished, and presses B, C two keys then simultaneously, and is identical with the password that had before presetted as the password of setting, and it is zero that the then current numeral that sets is eliminated; Inequality with the password that had before presetted as the password of setting, the then current numeral that sets can not zero clearing, and the data of original timing still exist.

When predefined password is forgotten, or when resetting because of needs, at first, power supply is pulled out, reclose power supply, within 3 seconds, press A, D key twice simultaneously, this moment, predefined password was shown on the liquid crystal display screen; After writing down password, press B, C key twice simultaneously, withdraw from cipher inquiry; After perhaps pressing twice of B, C key simultaneously, but utilize B, C key said method prescribed password again.

This device is provided by No. 5 alkaline batteries of four joints, is about service time about 700 hours, when battery is low to moderate 4V, sends the alarm sound that ticks.Because a variety of causes, though do not report to the police, and the character learning of liquid crystal display screen is extremely gloomy, at this moment, also should in time change battery.

Claims

1 one kinds of medical oxygen uptake time sets is characterized in that this device by the oxygen uptake switch and the magnetic switch that make oxygen uptake and timing open synchronously, stop, timing, demonstration and drive circuit, and battery is formed;

Described oxygen uptake switch links to each other with ventilation channel, and built-in strong magnets, and the change in location of oxygen uptake switch is attached changes of magnetic field, makes the state of magnetic switch change, and then as synchronous triggering timing signal, described magnetic switch is selected reed switch relay for use;

Described timing circuit is made of button K1-K4, crystal oscillator, memory element EEPROM (X24C08), central processor CPU (89C2051), button K1-K4 transports to the P3.0-P3.3 end of CPU, crystal oscillator is transported to XTAL1, the XTAL2 end of CPU, the A0-A2 end of memory element EEPROM and VSS end ground connection, SCL end, SDA end are connected to the P1.4-P1.5 end of CPU respectively, and the triggering timing signal is transported to the P1.7 end of CPU;

Described demonstration and driving are made of LCD MODULE (LCM103), and the P1.0-P1.3 end of CPU is transported to CS, RD, WR, the DATA end of LCD MODULE (LCM103) respectively, and the P3.4 end is transported to INT and held;

By opening the oxygen uptake switch, connect oxygen, and the magnetic switch state is changed, and then synchronous triggering timing circuit.

2 medical oxygen uptake time sets as claimed in claim 1 is characterized in that this device sets up that low-voltage detects and audible alarm circuit, and described low-voltage detection circuit is selected monitoring chip (MAX813L) for use, and its PFO end links to each other with the P1.6 end of CPU.