CN111904477A - Gastroesophageal reflux sampling device for general surgery department - Google Patents
Gastroesophageal reflux sampling device for general surgery department Download PDFInfo
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- CN111904477A CN111904477A CN202010718857.2A CN202010718857A CN111904477A CN 111904477 A CN111904477 A CN 111904477A CN 202010718857 A CN202010718857 A CN 202010718857A CN 111904477 A CN111904477 A CN 111904477A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0045—Devices for taking samples of body liquids
-
- A61M1/0003—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/74—Suction control
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/0045—Devices for taking samples of body liquids
- A61B2010/0061—Alimentary tract secretions, e.g. biliary, gastric, intestinal, pancreatic secretions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1042—Alimentary tract
- A61M2210/105—Oesophagus
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2210/00—Anatomical parts of the body
- A61M2210/10—Trunk
- A61M2210/1042—Alimentary tract
- A61M2210/1053—Stomach
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21137—Analog to digital conversion, ADC, DAC
Abstract
The invention relates to a gastroesophageal reflux sampling device for general surgery department, which comprises a solid catheter in the vertical direction, wherein a vent pipe with the lower end penetrating through the wall thickness of the catheter is coaxially arranged in the catheter, a sampling bag is arranged on the periphery of the side wall of the lower end of the catheter, an air pipe communicated with the sampling bag is arranged in the catheter, an annular groove positioned on the outer side of the vent pipe is coaxially arranged on the lower side of the bottom of the catheter, liquid inlet holes communicated with the annular groove are respectively arranged on the outer edge surface and the bottom of the catheter, the upper end of the annular groove is connected with a drainage bottle arranged on the outer side wall of the catheter through; according to the sampling device provided by the invention, the inflatable sampling bag is arranged on the outer side of the conduit, so that reflux is prevented from entering the esophagus tube during sampling, and the negative pressure tube, the annular groove, the liquid inlet hole and the one-way valve are arranged, so that sampling is simple and convenient, and the sample is prevented from flowing back to the stomach.
Description
Technical Field
The invention belongs to the technical field of gastroesophageal reflux, and particularly relates to a gastroesophageal reflux sampling device for general surgery department.
Background
The stomach is the most bulky part of each part of the digestive tract, and its morphology can be influenced by various factors such as body position, body type, age and stomach filling state. The shape of the balloon is tubular when the balloon is completely empty and is saccular when the balloon is highly full. When the adult stomach is inflated at medium degree, the average length (from the fundus to the lower end of the greater curvature of the stomach) is 25-30 cm, the diameter of the stomach body is about 20-25cm, and the volume of the stomach is about 1500 ml. The esophagus is the digestive tract between the pharynx and stomach. The Lower Esophageal Sphincter (LES) is a high-pressure region within 3-5 cm above the junction between the esophagus and stomach. The resting pressure of the place is 15-30 mmHg, a pressure barrier is formed, and the physiological effect of preventing gastric contents from reversely flowing into the esophagus is achieved.
The clinical gastroesophageal reflux disease and the disease of esophageal mucosa injury caused by excessive contact of the esophagus cavity with gastric juice are called gastroesophageal reflux, the gastroesophageal reflux disease is a disease of a series of chronic symptom groups or esophageal mucosa injury caused by reflux of gastric contents into the esophagus, the throat and the oral cavity, and the occurrence of gastroesophageal reflux and complications thereof is multifactorial and comprises dysfunction of the lower esophageal sphincter, abnormal motion of the esophageal body and the like.
At present, when sampling is done gastroesophageal reflux, lack professional sampling device, traditional sampling mode increases medical personnel's work load, and it is extremely inconvenient to sample, prolongs the time of inspection link, increases patient's misery, reduces treatment effeciency.
Disclosure of Invention
The present invention is to solve the problems of the background art, and provides a gastroesophageal reflux sampling device for general surgery department, wherein an inflatable sampling bag is arranged outside a conduit to prevent reflux from entering an esophageal tube during sampling, and a negative pressure tube, an annular groove, a liquid inlet hole and a one-way valve are arranged to make sampling simple and convenient and prevent the reflux of the sample to the stomach.
The purpose of the invention is realized as follows:
the utility model provides a palirrhea sampling device of department of general surgery's gastroesophageal, includes the solid pipe of vertical direction, the coaxial breather pipe that runs through its wall thickness of lower extreme of seting up in the pipe, pipe lower extreme lateral wall periphery is equipped with the sample bag, be equipped with the trachea with sample bag intercommunication in the pipe, the bottom downside of pipe is coaxial to be seted up the ring channel that is located the breather pipe outside, set up the feed liquor hole with the ring channel intercommunication respectively with the bottom on the pipe outer fringe face, the upper end of ring channel is passed through the negative pressure union coupling and is located the drainage bottle on the pipe lateral wall, the top of drainage bottle is equipped.
Preferably, one side of the air pipe, which is arranged outside the guide pipe, is connected with a three-way valve, a first port of the three-way valve is communicated with the air outlet end of the air pump, a second port of the three-way valve is communicated with the air pipe, and a third port of the three-way valve is communicated with the air.
Preferably, the upper end of the negative pressure pipe penetrates through the catheter, and a one-way valve with an opening facing the drainage bottle is arranged on the negative pressure pipe outside the top end of the catheter.
Preferably, the bottom of the catheter is a semicircular saccule, and the outer surface of the catheter is provided with an ultra-smooth non-hydrophilic coating.
Preferably, a connecting hole which is communicated with the vent pipe and is not communicated with the interior of the semicircular saccule is arranged on the semicircular saccule at the bottom of the catheter, and a one-way air valve structure formed by three polymer films is arranged at the outer bottom of the semicircular saccule and the corresponding connecting hole.
Preferably, the negative pressure pump is connected to the control mechanism through a pressure regulating valve, the control mechanism comprises a single chip microcomputer, and the single chip microcomputer comprises a display unit, a storage unit, an RTC circuit, a power circuit and an alarm circuit.
Preferably, the drainage bottle is connected to the singlechip through a pressure sensor.
Preferably, the single chip microcomputer is a MB95F204K single chip microcomputer.
Preferably, the transmission distance S from the annular groove to the drainage bottle satisfies the following conditions:
S=1/2α[L(α-V)+(α2-V2)Δt，
wherein L is the length (m) of the negative pressure tube, alpha is the propagation speed (m/s) of the negative pressure wave of the negative pressure pump, V represents the flow velocity of the fluid in the negative pressure tube, and delta t represents the time difference(s) required by the transmission of the negative pressure wave from the annular groove to the drainage bottle.
Preferably, the propagation speed α of the negative pressure wave satisfies:
α=1/ρ（1/K+Dψ/E）1/2，
where ρ represents the density (m) of the liquid in the negative pressure pipe3K represents the bulk modulus (Pa) of the liquid, and E is a negative pressure tubeThe elastic moduli (Pa) and D of the material are respectively the inner diameter and the thickness of the tube wall of the negative pressure tube, psi is the correction coefficient of the negative pressure tube, and 1-mu2Less than D/less than or equal to 1-0.5 mu, mu is the Poisson ratio of the negative pressure pipe.
Preferably, the negative pressure pipe is made of TPE materials, Poisson ratio upsilon of the negative pressure pipe is 0.28-0.36, elastic modulus E of the negative pressure pipe is 5.5-50Pa, Shore hardness H of the negative pressure pipe is A40-D70, and (E + H) upsilon/(H-E) is larger than 0.23 and smaller than 2.08.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the gastroesophageal reflux sampling device for general surgery department, the inflatable sampling bag is arranged on the outer side of the conduit, reflux is prevented from entering the esophagus tube during sampling, and the negative pressure tube, the annular groove, the liquid inlet hole and the one-way valve are arranged, so that sampling is simple and convenient, and the reflux of the sample to the stomach is prevented.
2. The invention provides a gastroesophageal reflux sampling device for general surgery department, wherein the lower end of a catheter is inserted into the oral cavity of a patient, a negative pressure pump is started, negative pressure in a negative pressure pipe opens a one-way valve and enables negative pressure to be arranged in an annular groove, the catheter is slowly inserted into an esophagus from the oral cavity of the patient, when the sampling bag enters the lower end position of an esophageal pipe, gas is introduced into the sampling bag, the sampling bag expands and is attached to the inner wall of the esophageal pipe to prevent reflux from flowing upwards, meanwhile, the reflux in the esophagus is sucked into the annular groove through a liquid inlet hole and then is sucked into a drainage bottle through the negative pressure pipe, the negative pressure pump is closed, the one-way valve is closed, and the sucked reflux cannot enter the esophagus through the annular.
3. According to the gastroesophageal reflux sampling device for general surgery department, the control mechanism analyzes the structural characteristics of the negative pressure wave and the acquired pressure and flow signals, when the fluctuation of the pressure and flow signals acquired at the head end and the tail end meets the corresponding structural characteristics, the flowing position information of the reflux liquid can be calculated through the time difference acquired at the head end and the tail end and the propagation speed of the negative pressure wave in the negative pressure tube, the empty tube signal of the negative pressure tube can be alarmed in a short time, and the empty suction phenomenon can be prevented.
Drawings
FIG. 1 is a schematic structural diagram of a gastroesophageal reflux sampling device in general surgery department.
FIG. 2 is a cross-sectional view of a gastroesophageal reflux sampling device of general surgery in accordance with the present invention.
FIG. 3 is a schematic view of a semi-circular balloon of a gastroesophageal reflux sampling device in general surgery department.
FIG. 4 is a schematic diagram of a control mechanism of a gastroesophageal reflux sampling device in general surgery department.
In the figure: 1. a conduit; 2. an air tube; 3. a three-way valve; 4. a sampling capsule; 5. a liquid inlet hole; 6. a drainage bottle; 7. a negative pressure pump; 8. a negative pressure tube; 9. a breather pipe; 10. an annular groove; 11. connecting holes; 12. a one-way valve; 13. a semicircular balloon; 14. a polymer film.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
With reference to fig. 1-3, a gastroesophageal reflux sampling device for general surgery comprises a vertically oriented solid tube 1, a vent pipe 9 with the lower end penetrating through the wall thickness is coaxially arranged in the catheter 1, the bottom of the catheter 1 is provided with a semicircular saccule 13, the outer surface of the catheter 1 is provided with an ultra-smooth non-hydrophilic coating, the semicircular saccule 13 at the bottom of the catheter 1 is provided with a connecting hole 11 which is communicated with the vent pipe 9 and is not communicated with the interior of the semicircular saccule 13, the outer bottom of the semicircular saccule 13 and the position corresponding to the connecting hole 11 are provided with a one-way air valve structure formed by three polymer films 14, the semicircular saccule 13 and the polymer films 14 form a conical structure, in the process that pipe 1 gets into the esophagus, semicircle sacculus 13 plays the effect of opening a way, and the toper structure can provide the space for the entering of follow-up pipe 1, leads to the patient to produce the vomiting when avoiding pipe 1 directly to get into.
The utility model discloses a trachea 2, including pipe 1, trachea 2, three-way valve 3, first port and the air pump of three-way valve 3, the first port of three-way valve 3 is given vent to anger the end intercommunication with the air pump, the second port and the trachea 2 intercommunication of three-way valve 3, the third port and the air intercommunication setting of three-way valve 3 are connected with three-way valve 3 in 1 outside one side of pipe, insert the stomach from the esophagus pipe with the one end that is equipped with sample bag 4 on the pipe 1, when sample bag 4 is located esophagus pipe lower extreme position, put through three-way valve 3's air pump and trachea 2, and gas gets into sample bag 4, and sample bag 4 takes place the inflation and laminates with the esophagus inside pipe wall, prevents that the palirrhea thing from upwards backflowing.
The coaxial ring channel 10 that is located the breather pipe 9 outside of offering of bottom downside of pipe 1, set up respectively with the bottom on the 1 outer fringe face of pipe with the feed liquor hole 5 of ring channel 10 intercommunication, the upper end of ring channel 10 is passed through negative pressure pipe 8 and is connected drainage bottle 6 of locating on the 1 lateral wall of pipe, the top of drainage bottle 6 is equipped with negative pressure pump 7, the upper end of negative pressure pipe 8 runs through the pipe 1 setting, be equipped with opening towards the check valve 12 of drainage bottle 6 on the outside negative pressure pipe 8 in pipe 1 top.
Insert the patient oral cavity with 1 lower extreme of pipe, start negative pressure pump 7, negative pressure in the negative pressure pipe 8 opens check valve 12 and makes the negative pressure have in the ring channel 10, insert the esophagus slowly from patient oral cavity with pipe 1, when sample bag 4 gets into esophagus pipe lower extreme position, let in gas in 4 to the sample bag, sample bag 4 takes place the inflation and laminates with the esophagus inside pipe wall, prevent that the palirrhea thing from upwards backflowing, and simultaneously, the palirrhea thing in the esophagus passes through feed liquor hole 5 and is inhaled in ring channel 10, then inhale in drainage bottle 6 through negative pressure pipe 8, close negative pressure pump 7, check valve 12 closes, the palirrhea thing by the suction can not get into in the esophagus through ring channel 10. When the catheter 1 is taken out, the air end of the three-way valve 3 and the end of the trachea 2 are firstly communicated, the air in the sampling bag 4 is emptied and separated from the esophageal duct, and then the catheter is taken out from the oral cavity of the patient.
Example 2
With reference to fig. 4, the negative pressure pump 7 is connected to a control mechanism through a pressure regulating valve, the control mechanism includes a single chip microcomputer, the single chip microcomputer comprises a display unit, a storage unit, an RTC circuit, a power circuit and an alarm circuit, the drainage bottle 6 is connected to a singlechip through a pressure sensor, the singlechip is a MB95F204K type singlechip, a display unit is used for providing Liquid Crystal Display (LCD) display of all contents in the system, a storage unit stores data defined by a user, an RTC circuit provides stable clock signals for a subsequent circuit, a power supply circuit provides a power supply device for the system, an alarm circuit automatically alarms when the pressure exceeds an upper limit and a lower limit, the pressure sensor collects the current pressure in real time and transmits the current pressure to the singlechip for processing, and the negative pressure pump 7 has a negative pressure suction function, when the pressure exceeds the upper limit and the lower limit, the alarm is given, and the high precision can be achieved through the A/D converter.
Example 3
On the basis of the embodiment 2, the transmission distance S from the annular groove to the drainage bottle satisfies the following conditions: s =1/2 α [ L (α -V) + (α)2-V2) And delta t, wherein L is the length (m) of the negative pressure pipe, alpha is the propagation speed (m/s) of negative pressure waves of the negative pressure pump, V is the flow velocity of fluid in the negative pressure pipe, and delta t is the time difference(s) required by the negative pressure waves to be transmitted from the annular groove to the drainage bottle.
The propagation speed alpha of the negative pressure wave satisfies the following conditions: α =1/ρ (1/K + D ψ/E)1/2Where ρ represents the density (m) of the liquid in the negative pressure pipe3K is a volume modulus (Pa) of the liquid, E is an elastic modulus (Pa) of the material of the negative pressure tube, D is a modulus of the negative pressure tube, phi is a correction coefficient of the negative pressure tube, and phi is 1-mu2Less than D/less than or equal to 1-0.5 mu, mu is the Poisson ratio of the negative pressure pipe.
The negative pressure pipe is made of TPE materials, Poisson ratio upsilon of the negative pressure pipe is 0.28-0.36, elastic modulus E of the negative pressure pipe is 5.5-50Pa, Shore hardness H of the negative pressure pipe is A40-D70, and (E + H) upsilon/(H-E) is larger than 0.23 and smaller than 2.08.
The control mechanism analyzes the structural characteristics of the negative pressure wave and the acquired pressure and flow signals, and can calculate the flowing position information of the backflow liquid through the time difference acquired at the first end and the last end and the propagation speed of the negative pressure wave in the negative pressure pipe after the fluctuation of the pressure and flow signals acquired at the first end and the last end meets the corresponding structural characteristics, so that the empty pipe signal of the negative pressure pipe can be alarmed in a short time, and the empty suction phenomenon is prevented.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalents and substitutions made within the scope of the present invention should be included.
Claims (7)
1. A gastroesophageal reflux sampling device for general surgery department, comprising a vertically oriented solid catheter (1), characterized in that: the utility model discloses a drainage tube, including pipe (1), trachea (9), the coaxial breather pipe (9) that runs through its wall thickness of lower extreme of seting up in pipe (1), pipe (1) lower extreme lateral wall periphery is equipped with sample bag (4), be equipped with trachea (2) with sample bag (4) intercommunication in pipe (1), ring channel (10) that are located the breather pipe (9) outside are seted up to the bottom downside of pipe (1) is coaxial, feed liquor hole (5) with ring channel (10) intercommunication are seted up respectively to the bottom on pipe (1) outer fringe face, drainage bottle (6) on pipe (1) lateral wall are located through negative pressure pipe (8) connection in the upper end of ring channel (10), the top of drainage bottle (6) is equipped with negative pressure pump (7).
2. A general surgery gastroesophageal reflux sampling device according to claim 1, wherein: trachea (2) are located the outside one side of pipe (1) and are connected with three-way valve (3), the first port and the air pump of three-way valve (3) are given vent to anger and are held the intercommunication, the second port and trachea (2) the intercommunication of three-way valve (3), the third port and the air intercommunication setting of three-way valve (3).
3. A general surgery gastroesophageal reflux sampling device according to claim 1, wherein: the upper end of the negative pressure pipe (8) penetrates through the catheter (1) and is arranged, and a one-way valve (12) with an opening facing the drainage bottle (6) is arranged on the negative pressure pipe (8) outside the top end of the catheter (1).
4. A general surgery gastroesophageal reflux sampling device according to claim 1, wherein: the bottom of the catheter (1) is a semicircular saccule (13), and the outer surface of the catheter (1) is provided with an ultra-smooth non-hydrophilic coating.
5. A general surgery gastroesophageal reflux sampling device according to claim 4, wherein: the catheter is characterized in that a connecting hole (11) which is communicated with the vent pipe (9) and is not communicated with the interior of the semicircular balloon (13) is formed in the semicircular balloon (13) at the bottom of the catheter (1), and a one-way air valve structure formed by three polymer films (14) is arranged at the outer bottom of the semicircular balloon (13) and corresponding to the connecting hole (11).
6. A general surgery gastroesophageal reflux sampling device according to claim 1, wherein: the negative pressure pump (7) is connected to the control mechanism through the pressure regulating valve, the control mechanism comprises a single chip microcomputer, and the single chip microcomputer comprises a display unit, a storage unit, an RTC circuit, a power circuit and an alarm circuit.
7. A general surgery gastroesophageal reflux sampling device according to claim 6, wherein: the drainage bottle (6) is connected to the single chip microcomputer through a pressure sensor.
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| CN202010718857.2A CN111904477B (en) | 2020-07-23 | 2020-07-23 | Gastroesophageal reflux sampling device for general surgery department |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113133788A (en) * | 2021-04-30 | 2021-07-20 | 无锡市第二人民医院 | Method for extracting gastric acid of patient with acid regurgitation in real time within 24 hours |
| CN113243938A (en) * | 2021-05-13 | 2021-08-13 | 高美龄 | Plunger valve type filtering medical suction nozzle head |
| CN116491988A (en) * | 2023-04-25 | 2023-07-28 | 普彦淞 | Gastric reflux sampling device for general surgery department |
| CN117554556A (en) * | 2024-01-12 | 2024-02-13 | 佳木斯大学 | Gastric juice acidity detection device for digestive system |
| CN117554556B (en) * | 2024-01-12 | 2024-05-10 | 佳木斯大学 | Gastric juice acidity detection device for digestive system |
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