CN201727541U

CN201727541U - Breathing sampling bag

Info

Publication number: CN201727541U
Application number: CN2010202673982U
Authority: CN
Inventors: 陈世雄; 张杨; 唐元诗; 胡火明; 胡海; 雷江军
Original assignee: Anhui Young-Hearty Medical Appliance & Equipment Co Ltd
Current assignee: Anhui Young-Hearty Medical Appliance & Equipment Co Ltd
Priority date: 2010-07-17
Filing date: 2010-07-17
Publication date: 2011-02-02
Anticipated expiration: 2020-07-17

Abstract

The utility model relates to a breathing sampling bag which is used for collecting carbon dioxide breathed out by a subject for 13C urea breath diagnosis, which comprises a bag body, breath nozzles, a drain hole, and a control valve for controlling the communication of the drain hole and the bag body or the breath nozzle. During the initial phase of the breath process of the subject, when the control valve is in a state, the drain hole is opened to be communicated with an air path breath nozzles, the subject continuously breathes to the breath nozzles, the incoming gas is discharged out of the bag body through the drain hole, during the tail section of the breathing process, the control valve is operated to be in a b state, the drain hole is closed, breathing is continuously carried out to fully inflate the bag body, the gas in the bag body is the gas during the tail section of the breath process, and the concentration of the carbon dioxide of the breath sample can be effectively improved.

Description

The expiration sampler bag

Affiliated technical field

This utility model relates to a kind of expiration sampler bag, especially for ¹³The give off carbon dioxide expiration sampler bag of gas of C urea breath diagnostic acquisition experimenter.

Background technology

The expiration sampler bag is widely used in ¹³C urea breath test diagnosis human body helicobacter pylori infections is taken giving the experimenter ¹³Before the C carbamide medicine and after taking medicine 30 minutes, gather experimenter's specimen of breath respectively with the expiration sampler bag, go up in analytical tool (infrared spectrometer or mass spectrograph) and measure in the specimen of breath ¹³The variable quantity of C isotope abundance is for negative patient, in the specimen of breath before and after it is taken medicine ¹³The C isotope abundance changes hardly, and positive person take medicine before and after in the specimen of breath ¹³Obvious variation can take place in the C isotope abundance, judges thus whether the experimenter infects helicobacter pylori.

At present, known sampler bag is made up of expiration mouth of bag connection that a composite aluminium plastic material is made usually, and the gas that the experimenter breathes out is by in the expiration mouth incoming call bag, sampling finishes the back and blocks expiration mouth inlet with capping plug, or an one-way cock is set with the sealing sampler bag on the expiration mouth.But existing expiration sampler bag has a significantly deficiency, analytical tool is higher than 1% at least for the general requirement of gas concentration lwevel of gas sample, and existing sampler bag can not guarantee to collect the specimen of breath of higher gas concentration lwevel, account for that gas concentration lwevel is near or below 1% in the sample of significant proportion, low excessively gas concentration lwevel has a strong impact on the accuracy of measurement result.

Concentration of carbon dioxide depends on the length of suction air in pulmonary's time of staying in the expiration, the time of staying is long more, gas concentration lwevel is high more, in the exhalation process in each breathing cycle of human body, the expiration gas concentration lwevel is the trend of a rising from the beginning to the end, why existing expiration sampler bag can not guarantee to collect the expiration of higher gas concentration lwevel, be because can only collect the sample of experimenter at the beginning of exhaling, the experimenter is when using existing expiration sampler bag, must in bag, exhale by containing the expiration mouth after sucking air and holding one's breath for a long time, to gather the expiration of enough gas concentration lwevels, but, in actual applications, because the experimenter can both finish the process of holding one's breath as requested, density of carbon dioxide gas is lower than 1% in the expiration that usually causes gathering, and can not reach requirement, influence the accuracy of measurement result, even cause sample to cancel.

Summary of the invention

Can not gather the deficiency of high concentration carbon dioxide specimen of breath in order to overcome existing sampler bag, this utility model provides a kind of expiration sampler bag, this sampler bag in use, the experimenter can hold one's breath for a long time, when exhaling, control by simple, part or all of expiration at the beginning of the exhalation process is discharged in the atmosphere, contains the specimen of breath of high concentration carbon dioxide and gather the experimenter end of exhaling.

The technical scheme that its technical problem that solves this utility model adopts is: on the sampler bag of existing structure, be provided with a steam vent and a control valve of controlling this steam vent and bag or expiration mouth UNICOM in addition.Use expiration sampler bag of the present utility model, in the starting stage of experimenter's exhalation process, control valve is in a state, steam vent open and and the expiration mouth between gas circuit UNICOM, the experimenter exhales to the expiration mouth continuously, the gas of incoming call is discharged to outside the bag by steam vent, when the end stage of exhalation process, operation control valve makes it to be in the b state, vent closure, continue to exhale to being full of bag, like this, in the incoming call bag is the gas of exhalation process end stage, has effectively improved concentration of carbon dioxide in the specimen of breath.

Description of drawings

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is the principle schematic when control valve is in a state among first embodiment of this utility model.

Fig. 2 is the principle schematic when control valve is in the b state among first embodiment of this utility model.

Fig. 3 is the principle schematic when control valve is in a state among second embodiment of this utility model.

Fig. 4 is the principle schematic when control valve is in the b state among second embodiment of this utility model.

Fig. 5 is the principle schematic when control valve is in a state among the 3rd embodiment of this utility model.

Fig. 6 is the principle schematic when control valve is in the b state among the 3rd embodiment of this utility model.

Fig. 7 is the principle schematic when control valve is in a state among the 4th embodiment of this utility model.

Fig. 8 is the principle schematic when control valve is in the b state among the 4th embodiment of this utility model.

Among the figure: 1. bag, 2. expiration mouth, 3. steam vent, 4. control valve, the gas flow when a. control valve is in a state, the gas flow when the b. control valve is in the b state.

The specific embodiment

With reference to Fig. 1, Fig. 2, a steam vent 3 and a control valve 4 are arranged on expiration mouth 2 between the bag 1, control valve 4 is two position three-way valves, in the starting stage of exhalation process, as shown in Figure 1, make the spool of control valve 4 be in a state, at this moment, gas circuit between expiration mouth 2 and the steam vent 3 is a UNICOM, and the gas circuit between expiration mouth 2 and the bag 1 is closed, by the gas of expiration mouth 2 incoming calls, all flow to and be discharged in the atmosphere by steam vent 3 along a, in the end stage of exhalation process, as shown in Figure 2, make the spool of control valve 4 be in the b state, at this moment, gas circuit between expiration mouth 2 and the steam vent 3 is closed, and the gas circuit between expiration mouth 2 and the bag 1 is what close to be opened, and the gas by 2 incoming calls of expiration mouth then all flows to along b and enters bag 1.

With reference to Fig. 3, Fig. 4, a steam vent 3 and a control valve 4 are arranged on expiration mouth 2 between the bag 1, control valve 4 is two plungers, in the starting stage of exhalation process, as shown in Figure 3, make the plunger of control valve 4 be in a state, at this moment, gas circuit between expiration mouth 2 and the steam vent 3 is a UNICOM, and the gas circuit between expiration mouth 2 and the bag 1 is closed, by the gas of expiration mouth 2 incoming calls, all flow to and be discharged in the atmosphere by steam vent 3 along a, in the end stage of exhalation process, as shown in Figure 4, make the plunger of control valve 4 be in the b state, at this moment, gas circuit between expiration mouth 2 and the steam vent 3 is closed, and the gas circuit between expiration mouth 2 and the bag 1 is what close to be opened, and the gas by 2 incoming calls of expiration mouth then all flows to along b and enters bag 1.

With reference to Fig. 5, Fig. 6, steam vent 3 and a control valve 4 are arranged on the bag 1 position different with expiration mouth 2, control valve 4 is made up of the flexible glue leather hose of capsule and the spheroid that is mounted in it by one, in the starting stage of exhalation process, as shown in Figure 5, make spheroid be positioned at the cyst of flexible glue leather hose, control valve 4 is in a state, at this moment, the gas circuit between expiration mouth 2 and the steam vent 3 is a UNICOM, by the gas of expiration mouth 2 incoming calls, can flow to along a and be discharged in the atmosphere by steam vent 3, in the end stage of exhalation process, as shown in Figure 6, spheroid is clamp-oned from capsule in the flexible glue leather hose, make control valve 4 be in the b state, at this moment, steam vent 3 is closed, and the gas by 2 incoming calls of expiration mouth then flows to along b and enters and be deposited in the bag 1.

With reference to Fig. 7, Fig. 8, steam vent 3 and a control valve 4 are arranged on the bag 1 position different with expiration mouth 2, and control valve 4 is cocks that are contained on the steam vent 3, in the starting stage of exhalation process, as shown in Figure 7, cock is opened, make control valve 4 be in a state, at this moment, the gas circuit between expiration mouth 2 and the steam vent 3 is a UNICOM, by the gas of expiration mouth 2 incoming calls, can flow to along a and be discharged in the atmosphere by steam vent 3, in the end stage of exhalation process, as shown in Figure 8, tighten cock, make control valve 4 be in the b state, at this moment, steam vent 3 is closed, and the gas by 2 incoming calls of expiration mouth then flows to along b and enters and be deposited in the bag 1.

Below in conjunction with contrast experiment's data of specific embodiment and prior art, illustrate effect of the present utility model.

Experiment one:

The experimenter uses existing volume to gather a group calling gas sample as the expiration sampler bag of 250mL, contains the expiration mouth after the deep breathing immediately and exhales, and airbag is blown the plug that closes the lid after full, and rest is sampled after a few minutes next time, amounts to 10 samples of collection.

The 250mL expiration sampler bag that the experimenter uses the volume of this utility model embodiment one to be is gathered another group calling gas sample, at first by-pass valve control is pushed a state, containing the expiration mouth after the deep breathing immediately exhales, when exhaling for 4 seconds continuously by-pass valve control is pushed the b state, and continue to exhale to blowing the plug that closes the lid behind the full airbag, rest is sampled after a few minutes next time, amounts to gather 10 samples.

Obtain the carbon dioxide percent concentration (CO of each sample in two groups of samples by apparatus measures ₂%) and calculate the meansigma methods of two groups of sample measurement respectively, data see Table 1.

Table 1

According to experimental data listed in the table 1, gas concentration lwevel meansigma methods in the specimen of breath of existing sampler bag collection is 1.3%, wherein there is the gas concentration lwevel of 2 samples to be lower than 1%, in the specimen of breath that the sampler bag of this utility model embodiment one is gathered, the gas concentration lwevel meansigma methods is 3.6%, and the gas concentration lwevel of all samples all is higher than 1%.

Experiment two:

The experimenter uses the expiration sampler bag of this utility model embodiment four to gather another group calling gas sample, at first the turn cock makes by-pass valve control be in a state, containing the expiration mouth after the deep breathing immediately exhales, the turn cock makes by-pass valve control be in the b state when exhaling for 4 seconds continuously, and continue to exhale to blowing the plug that closes the lid behind the full airbag, rest is sampled after a few minutes next time, amounts to gather 10 samples.

Obtain the carbon dioxide percent concentration (CO of each sample in two groups of samples by apparatus measures ₂%) and calculate the meansigma methods of two groups of sample measurement respectively, data see Table 2.

Table 2

According to experimental data listed in the table 2, gas concentration lwevel meansigma methods in the specimen of breath of existing sampler bag collection is 1.3%, wherein there is the gas concentration lwevel of 3 samples to be lower than 1%, in the specimen of breath that the sampler bag of this utility model embodiment four is gathered, the gas concentration lwevel meansigma methods is 2.9%, and the gas concentration lwevel of all samples all is higher than 1%.

Experimental data shows, adopts expiration sampler bag of the present utility model, can improve concentration of carbon dioxide in the specimen of breath of collection greatly, can avoid in the expiration of existing sampler bag collection dense carbon dioxide to spend low phenomenon fully.

Claims

1. an expiration sampler bag comprises bag and the expiration mouth that links to each other with bag, it is characterized in that: the control valve that is provided with a steam vent and this steam vent of control on the sampler bag.

2. expiration sampler bag according to claim 1 is characterized in that: steam vent and control valve are arranged on the bag.

3. expiration sampler bag according to claim 2 is characterized in that: control valve is a cock.

4. expiration sampler bag according to claim 2 is characterized in that: control valve is made up of a hose and the spheroid that is in the hose by capsule.

5. expiration sampler bag according to claim 1 is characterized in that: steam vent and control valve are arranged on the position between expiration mouth and the bag.

6. expiration sampler bag according to claim 5 is characterized in that: control valve is a two position three-way valve.

7. expiration sampler bag according to claim 5 is characterized in that: control valve is two plunger valves.