CN207429400U - Multifunctional stomach tube - Google Patents

Abstract

The utility model is related to medical instruments fields, provide a kind of Multifunctional stomach tube.Stomach tube includes conduit, is equipped with to convey the first passage of nutrient solution in conduit, first passage has multiple orifices for leading to the external world, and multiple orifices are spaced apart on the conveying direction of nutrient solution；PH value detection unit, temperature detecting unit and pressure sensing cell in esophagus are additionally provided with outside conduit；Monitoring device further includes a main control module and sets relevant parameter for operator, while handles, shows and record the data message collected from each detection unit.By detecting the pH value in inferior esophageal sphincter upper limb 5cm and stomach, the crowd in the presence of air draught danger by mistake can be quickly identified；By increasing temperature detecting unit in the region of pharynx nasalis, facilitate the clinical patient for carrying out daily temperature monitoring, finding infection in time；Gasbag pressure can be monitored by pressure sensing cell to change, and so as to reflect esophageal pressure, further extrapolate intrapleural pressure.

Description

Multifunctional stomach tube

Technical field

The utility model is related to medical instruments field, a kind of Multifunctional stomach tube and its pressure sensing cell are specifically provided Initial method.

Background technology

The incidence of gastroesophageal reflux disease (GERD) gradually steps up in recent years, is common disease, the frequently-occurring disease of GI Medicine, leads Symptom is wanted as sour regurgitation, heartburn and retrosternal pain.Clinically to gastroesophageal reflux disease, it is necessary to be monitored when 24 is small in esophagus PH and other physiological parameters.

, it is necessary to using esophagus monitoring tube during diagnosis is monitored to gastroesophageal reflux disease.Esophageal manometry is A kind of inspection method of gastroesophageal reflux disease is diagnosed, Obstructive sleep apnea hypopnea syndrome breathing is also used for and drives The quantitative measurment of power and the positioning of sleep apnea obstructive position.

It is to meet the main method for being unable to oral feeding patient's nutrition intake through stomach tube nasal feeding nutrition, is widely used in severe Care unit, neural Medicine and Surgery, GI Medicine, geriatric ward etc..However, using the patient of nasal feeding nutrition, often there are stomach oesophagus Reflux and situation about inhaling by mistake, if the gastric emptying ability of patient, there are problem, this phenomenon more protrudes.It has been reported that Either Ventilator Associated Pneumonia or Stroke-Associated Pneumonia are inhaled closely related with gastroesophageal reflux and by mistake, but clinically Lack corresponding means and find that patient existing air draught danger, traditional esophageal pH monitoring technology by mistake do not provide nasal feeding work( in time Can, the crowd of application is mainly the patient of gastroesophageal reflux disease.In this case, clinic generally selects moves in advance using stomach and intestine The prophylactic treatment of power drug, but problem can not be fully solved, and the effect of drug is also difficult to assess.

Mechanical ventilation is the important support means for saving respiratory failure life, and mechanical ventilation is by improving the logical of patient Gas and gas exchange capacity reduce breathing acting and achieve the purpose that treat respiratory failure, to realize such target, it is important that It is exactly a little using positive pressure alveolar to be made to keep open state, while avoids because of the machinery damage caused by excess pressure or volume Wound.Traditional way is that suitable pressure of inspiration(Pi) and breathing end pressure are selected according to the tidal volume and arterial partial pressure of oxygen of patient Power.However, this way can not solve the problems, such as that alveolar withers because of insufficient pressure, wind-contusion or volume can not be solved The problem of hindering, it is that intra-airway pressure is not to determine the unique pressure whether alveolar opens to trace it to its cause, and to reflect alveolar Open state, not only it is to be understood that alveolar pressure, it should also be understood that the pressure outside alveolar, that is, the pressure in pleural cavity, only In the case that pressure differential inside and outside alveolation is positive value, alveolar is only possible to maintain open state.Clinically it is difficult to directly measure Intrapleural pressure power, it is therefore desirable to find convenient indirect measurement method detection intrapleural pressure power size.

It is proposed the possibility that can reflect intrapleural pressure with esophagus internal pressure first early in Buytendijk in 1949, Nineteen fifty-two Dornhorst and Leathart etc. have found that esophagus internal pressure and intrapleural pressure have good correlation, and pass through food Road inspection of inner pressure can explain the principle of many lung Mechanics of Machinery.Esophagus inspection of inner pressure is proven to have extensive clinic in recent years Purposes, the lung ventilator management including Acute Lung Injury Patients；Optimize man-machine harmony's property；Monitoring breathing acting and off line are commented Estimate etc..Although this theory has obtained extensive attention, lack a set of practicable device to help clinician Carry out this operation.

Body temperature is clinically to need frequently obtain most basic physical signs.Currently used method is using temperature Degree meter obtains oxter, temperature or obtains skin temperature using infrared technique in natural cavity.But due to the heat conductivility of skin And it is non-ideal, so skin, the temperature of oxter all have certain gap with body temperature.Temperature survey in natural cavity has Inconvenience.For the patient in intensive care unit, temperature in more accurately body temperature, especially cranium brain is generally required, However there is no convenient obtaining means at present.

Utility model content

(1) technical problems to be solved

It is to be solved in the utility model be the pleural pressure of patient in the prior art be not easy to obtain, intensive care patient body The technical issues of interior temperature is not easy to obtain and can not detect esophageal regurgitation in real time using the patient of emitting nasal feeding nutrition tube.

(2) technical solution

In order to solve the above technical problems, the utility model provides a kind of Multifunctional stomach tube, which includes conduit, described Equipped with for conveying the first passage of nutrient solution in conduit, the first passage has multiple orifices for leading to the external world, multiple The orifice is spaced apart on the conveying direction of nutrient solution；Stomach inner pH value detection unit, esophagus are additionally provided with outside the conduit Interior pH value detection unit, temperature detecting unit and pressure sensing cell；PH value detection unit is located under esophagus in the esophagus At sphincter upper limb 5cm, the stomach inner pH value detection unit is located in stomach.

Preferably, multiple orifices are in the circumferentially-spaced distribution of the conduit.

Preferably, the conduit is externally provided with distance mark, and the distance mark is made of X-ray developing material, the distance It marks to indicate the insertion depth of the conduit.

Preferably, the pressure sensing cell include can elastic shrinkage air bag, for into air bag inject gas gas Pump and the baroceptor for detecting intracapsular pressure.

Preferably, pH value detection unit is hydrogen ion sensitive FET in the stomach inner pH value detection unit and esophagus.

Preferably, the temperature detecting unit is temperature detection electrode.

Preferably, the seal wire with the pluggable cooperation of the first passage is further included.

Preferably, second channel is additionally provided in the conduit, the second channel detects for housing the stomach inner pH value The connecting line of pH value detection unit and temperature detecting unit in unit, esophagus.

Preferably, the outer wall of the conduit is equipped with hydrophilic coating.

Preferably, third channel is further included, the external world is led in one end of the third channel by the side wall of the conduit, described The other end of third channel leads to the external world by the tail end of the conduit.

(3) advantageous effect

A kind of Multifunctional stomach tube provided by the utility model, the stomach tube include conduit, are equipped with to convey nutrition in conduit The first passage of liquid, first passage have multiple orifices for leading to the external world, and multiple orifices are on the conveying direction of nutrient solution It is spaced apart；PH value detection unit, temperature detecting unit and pressure sensing cell in esophagus are additionally provided with outside conduit.By in stomach PH value in pH value detection unit and esophagus at pH value detection unit monitoring inferior esophageal sphincter upper limb position 5cm and in stomach, can Clinical quick identification to be facilitated to there is the people at highest risk of air draught danger by mistake, taking preventive measures as early as possible prevents aspiration pneumonia Occur；Temperature detecting unit is added by the region in pharynx nasalis, the temperature monitoring for facilitating clinical progress daily is found in time The patient of infection, while alleviate the work load of nursing；Gasbag pressure is monitored by pressure sensing cell to change, so as to reflect Go out esophageal pressure, further extrapolate intrapleural pressure.

Description of the drawings

Fig. 1 is a kind of schematic diagram of Multifunctional stomach tube of the utility model embodiment.

Fig. 2 is the conduit of the utility model embodiment and its schematic diagram of orifice.

Fig. 3 is the schematic diagram of the first passage of the utility model embodiment, second channel and third channel.

Reference numeral：

1st, conduit；2A, stomach inner pH value detection unit；PH value detection unit in 2B, esophagus；3rd, pressure sensing cell；4th, away from From mark；5th, temperature detecting unit；6th, baroceptor external interface；7th, end cap；8th, pH sensors external interface；9th, temperature passes Sensor external interface；10th, seal wire；11st, orifice；12nd, first passage；13rd, second channel；14th, third channel.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below Embodiment is not intended to limit the scope of the present invention for illustrating the utility model.

, it is necessary to illustrate in the description of the utility model, unless otherwise clearly defined and limited, term " connection " It should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can be direct phase Even, can also be indirectly connected by intermediary.For the ordinary skill in the art, can manage as the case may be Solve concrete meaning of the above-mentioned term in the utility model.

With reference to shown in Fig. 1 to Fig. 3, a kind of Multifunctional stomach tube of the utility model embodiment offer, including conduit 1, conduit 1 The interior first passage 12 for being equipped with to convey nutrient solution, the closing of front end in an insertion direction of first passage 12, first passage 12 have multiple orifices 11 for leading to the external world, and multiple orifices 11 are spaced apart on the conveying direction of nutrient solution, when conduit 1 When being inserted into patient's body, nutrient solution can be injected and pass through multiple orifices 11 by the first passage 12 and arrange nutrient solution Enter to patient's body；Stomach inner pH value detection unit 2A is additionally provided with outside conduit 1, pH value detection unit 2B, temperature detection list in esophagus Member 5 and pressure sensing cell 3；PH value detection unit is located at esophageal sphincter upper limb 5cm in esophagus, stomach inner pH value detection Unit is located in stomach.

Severe patients with mechanical ventilation usually needs sedation treatment, using antisecretory sour environment in stomach is caused to be broken in addition It is bad, the risk that aspiration pneumonia occurs is further increased, the monitoring for upper esophageal sphincter position pH value is to find stomach food The effective ways of road reflux, but due to the use of antisecretory, the pH value of patient's reflux object may be far above in the stomach of normal person PH value, therefore only monitor the missing inspection that upper esophageal sphincter position pH value is likely to cause gastroesophageal reflux phenomenon.This patent is This devises two pH value detection units of pH value detection unit 2B in stomach inner pH value detection unit 2A and esophagus, passes through interface together 8 are connected to main control module, and main control module carries out comparison by the pH value to two detection units and determines whether that generation stomach esophagus is anti- Stream facilitates clinical quick identification to there is the people at highest risk of air draught danger by mistake, and taking preventive measures as early as possible prevents aspiration pneumonia Generation.In addition, monitoring device adds temperature detecting unit 5 by the region of pharynx nasalis in esophagus in present design, The temperature monitoring for facilitating clinical progress daily, finds the patient of infection in time, while alleviates the workload of nursing.

Wherein, multiple orifices 11 are in the circumferentially-spaced distribution of conduit 1, and orifice 11 can be ellipse, and conduit 1 be Possesses the hose of some strength, length 70cm-120cm is provided with hydrophilic coating outside conduit 1, conduit 1 is facilitated to enter patient In vivo.End cap 7 is further fixed in the tail end of conduit 1, which is used for occlusion catheter 1, prevents dirt from entering conduit 1, and to suffer from Person buys nutrient solution and provides safety guarantee.

Pressure sensing cell 3 include can elastic shrinkage air bag, for into air bag inject gas air pump and be used for The baroceptor of intracapsular pressure is detected, baroceptor is carried out data transmission by baroceptor external interface 6, air bag Length is 8cm-12cm, and away from 1 tip of conduit about 12cm-15cm, pressure sensing cell 3 changes for monitoring gasbag pressure, so as to Reflect esophageal pressure situation of change, and then extrapolate intrapleural pressure.The device possesses sealing function, prevents from squeezing into air bag Gas leakage；Differential pressure type baroceptor can be used in baroceptor, and the signal of pressure sensor output is by amplification, filter Ripple is followed by the A/D interfaces of control module, is converted into the pressure value of digital quantity and send to display screen to show by it, so as to real The acquisition of existing pressure value is converted, send aobvious, storage, completes monitoring process.

If the pressure value monitored is capable of automatic alarm beyond given threshold, acousto-optic prompting is sent, and is shown on a display screen Warning is super, under-voltage.If the alarm duration is more than one default time, if pressure persistently rises, control module will beat Relief valve pressure release is opened, and prompts whether to need to rebuild initial pressure on a display screen.It is to rebuild；It is no, ignore structure Standing state is maintained to continue to monitor.

It is preferably provided with outside conduit 1 apart from mark 4, is used to indicate the insertion depth of conduit apart from mark 4, it specifically can be from conduit 1 tip is risen sets one at regular intervals, has developing function, is positioned when being inserted into stomach oesophagus for conduit 1；The distance Mark 4 is preferably made of X-ray developing material, thus can clearly show insert the distance under the irradiation of the X-ray in surgical procedure.

PH value detection unit 2B can be hydrogen ion sensitive FET, metal electricity in stomach inner pH value detection unit 2A and esophagus Pole or other can detect the electrode of pH value, pH value detection unit 2B, which is each attached to, in stomach inner pH value detection unit 2A and esophagus leads On pipe 1, wherein stomach inner pH value detection unit 2A is located at 1 end of conduit, for monitoring stomach inner pH value.PH value detection unit in esophagus 2B is used to monitor the pH value at esophageal sphincter position, and signal is reached master control mould by two pH detecting electrodes by sensor interface 8 Block.

PH value monitoring is realized, is detected in stomach and is eaten respectively using PH the detecting electrodes 2A and 2B on 1 side wall of conduit PH value in road, after electric signal passes the control module in host back, control module compares and analyzes two pH values, then send aobvious Display screen is shown.

PH value in no gastric reflux esophagus should 7.2 or so, when there is gastric reflux the pH value of oesophagus can under PH value in simultaneously convergence stomach drops, and system has prompting gastric reflux, and sound-light alarm, screen display in addition to normal display at this time.

Temperature detecting unit 5 is preferably temperature detection electrode, and temperature detection electrode is fixed on conduit 1, for supervising in real time Survey body temperature numerical value.

Temperature monitoring realizes that the sensor (is not limited to PT resistance or thermoelectricity occasionally number is warm by taking PT resistance as an example Spend sensor), method 1：By constant current source power supply, PT resistance and the adjustable level-one amplification electricity of amplifier composition subtracter composition ratio Road, the signal transmission by amplification are converted into temperature value by main control module and are sent to display screen display to the A/D interfaces of control module It shows to come, acquisition so as to fulfill temperature is converted, send aobvious, storage and monitoring.Method 2：It is powered by constant pressure source, PT resistance and fortune It puts and forms bridge-type thermometric amplifying circuit with resistance, conditioned signal converts thereof into temperature value by control module and send to aobvious Display screen shows, acquisition so as to fulfill temperature is converted, send aobvious, storage and monitoring.Method 3：It is sensed using digital temperature Device, control module are directly connected to read the output of the sensor, and acquisition so as to fulfill temperature is converted, send aobvious, storage and monitoring

In addition, this esophageal pressure monitoring device with stomach tube function preferably further includes and 12 pluggable cooperation of first passage Seal wire 10, for strengthening 1 intensity of conduit when conduit 1 is into patient's body, after conduit 1 positions, strengthen seal wire 10 and withdraw from and leads Pipe 1.

Second channel 13 is additionally provided in conduit 1, the diameter of second channel 13 is small compared with the diameter of first passage 12, and second is logical Road 13 is for housing stomach inner pH value detection unit 2A, the data-signal of pH value detection unit 2B and temperature detecting unit 5 in esophagus Line.

Second channel 13 can be multiple, such as two, one is detected line channel as pH value, another is temperature inspection Survey line paths.

Third channel 14, third channel 14 are further included, the external world is led in one end of third channel 14 by the side wall of conduit 1, uses In connection air bag 3；The other end of third channel 14 leads to the external world by the tail end of the conduit, can connect air pump in host and Relief valve.

Pressure monitoring device, temperature signal outgoing interface 9, pH value signal outgoing interface 8 are all connected with main control module, master control Module is provided simultaneously with that data are shown, waveform is shown and data storage and export function.

The present apparatus is the electricity by sampling the pressure sensor being fixed on stomach tube, pH value detecting electrode, temperature sensor Pressure, current signal, analyze by main control module, corresponding pressure value, pH value, temperature value are calculated.

Application method：

1st, using preceding setting：

Should be according to user's situation, the normality threshold of pressure sensor when present apparatus work is set by touch screen and knob (such as -150 to 150cmH2O, main control module warning function will be triggered beyond the threshold value), sampling interval duration, temperature sensor are adopted Sample time, pH value sensor sample time.

Stomach tube is inserted into and after the stabilization of position, starts slowly to inflate into air bag by air pump, main control module detects pressure simultaneously Force snesor numerical value change, when rate of pressure increase generation suddenly change or when pressure reaches certain threshold value (such as 1cmH2O), Main control module closes inflator pump, and judges that air bag cyst wall is physically contacted with esophageal wall at this time.Main control module starts simultaneously Sampling time according to setting samples pressure sensor, is judged, being shown, being stored and transmitted.Work as air bag in the above process When pressure is higher than given threshold, main control module will open pressure relief valve, keep intracapsular pressure within the specific limits, prevent air bag Interior hypertonia.

2nd, data are shown and transmission：

Present apparatus tool data show, waveform is shown and data store and export function.It can be in use or complete The data are uploaded in PC machine in real time into rear be connected by serial ports (such as 232 interfaces, SPI interface, USB interface) with PC machine, Compare in pc client progress data analysis while the movable storage devices such as SD card or USB flash disk can also be used by equipment internal data File exports.The export of data can also take any thinkable data transfer mode of correlative technology field engineer.

In conclusion this nasogastric tube can be summarized as including with lower module：

A) main control module：

The condition that the main control module of the present apparatus is set according to operator gathers the signal of 4 sensors in real time, and completes to sentence Disconnected, display, storage, transmission, while control the work of the peripheral hardwares such as inflator pump, gas bleeder valve.

In start, device can carry out self-test, check sensor zero point, air bag leak detection, inflator pump detection, relief valve Detection, supply voltage detection, the detection of constant pressure source module, constant current source module simultaneously enter working interface after confirmation is errorless.Operator The main control module operation airbag aeration function after working interface starts the present apparatus, pressure monitoring device and relief valve pass through master control mould Air pressure is in proper level in block maintenance air bag, and presses the setting sampling time respectively to sensor sample, judgement, display, storage, biography It is defeated.

In above process in the event of the pressure in air bag beyond given threshold, main control module makes pressure relief valve is opened Pressure stability in air bag is within given threshold, to prevent air bag in esophagus implosive.Otherwise be less than when intracapsular pressure or Master control borad will close pressure relief valve during in given threshold.

B) other module or components：

A), constant current source module：It is responsible for temperature sensor and adopting for stable, high-precision supply current raising sensor is provided Sample precision.

B) constant pressure source module：It is responsible for pressure sensor and adopting for stable, high-precision supply voltage raising sensor is provided Sample precision.

C) pH value sensor circuit：2 pH value detection units all connect main control module microcontroller by passage 13 and interface 8 A/D interfaces.

D) air bag there detection circuit：1 pressure sensing cell being located in air bag, is connected by passage 13 and interface 8 Main control module Chip Microcomputer A/D interface.

E) temperature sensor circuit：1 temperature detecting unit connects main control module microcontroller by passage 13 and interface 9 A/D interfaces.

The utility model additionally provides a kind of initial method of the pressure sensing cell using the Multifunctional stomach tube, should Method detects intracapsular pressure by air pump to airbag aeration, and using pressure sensor, when rate of pressure rise raises suddenly, Or stop inflation when pressure reaches given threshold, and judge that air bag is just contacted with esophageal wall this moment.Because air bag is starting There are spacing between esophageal wall during inflation, so air bag internal pressure very little during initial inflation process；And work as Air bag is expanded to when being contacted with indoor inner wall, due to being stopped by esophageal wall, so the pressure of air bag can rise suddenly, therefore can be sentenced Disconnected air bag at this time is contacted with esophageal wall, should be stopped air pump and be continued to airbag aeration, and be just met for will for the size of air bag at this time It asks, and esophagus will not be made to generate sense of discomfort.

The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model technical principle is not departed from, several improvement and replacement can also be made, these change The scope of protection of the utility model is also should be regarded as into replacement.

Claims (10)

1. a kind of Multifunctional stomach tube, which is characterized in that be equipped with to convey nutrient solution including conduit, in the conduit first is logical Road, the first passage has multiple orifices for leading to the external world, between multiple orifices are on the conveying direction of nutrient solution Every distribution；Stomach inner pH value detection unit is additionally provided with outside the conduit, pH value detection unit, temperature detecting unit and pressure in esophagus Power detection unit；PH value detection unit is located at esophageal sphincter upper limb 5cm in the esophagus, and the stomach inner pH value detection is single Member is located in stomach.

2. Multifunctional stomach tube according to claim 1, which is characterized in that multiple orifices are in the circumferential direction of the conduit On be spaced apart.

3. Multifunctional stomach tube according to claim 1, which is characterized in that the conduit be externally provided with distance mark, it is described away from It is made from mark of X-ray developing material, the distance marks to indicate the insertion depth of the conduit.

4. Multifunctional stomach tube according to claim 1, which is characterized in that the pressure sensing cell includes can elastic shrinkage Air bag, the air pump for injecting gas into air bag and baroceptor for detecting intracapsular pressure.

5. Multifunctional stomach tube according to claim 1, which is characterized in that pH in the stomach inner pH value detection unit and esophagus Value detection unit is hydrogen ion sensitive FET.

6. Multifunctional stomach tube according to claim 1, which is characterized in that the temperature detecting unit is temperature detection electricity Pole.

7. Multifunctional stomach tube according to claim 1, which is characterized in that further include and the pluggable cooperation of the first passage Seal wire.

8. Multifunctional stomach tube according to claim 1, which is characterized in that second channel is additionally provided in the conduit, it is described Second channel be used to housing the stomach inner pH value detection unit, in esophagus pH value detection unit and temperature detecting unit connection Line.

9. Multifunctional stomach tube according to claim 1, which is characterized in that the outer wall of the conduit is equipped with hydrophilic coating.

10. according to claim 1 to 9 any one of them Multifunctional stomach tube, which is characterized in that third channel is further included, it is described The external world is led in one end of third channel by the side wall of the conduit, and the other end of the third channel is led to by the tail end of the conduit Outwardly.