Multifunctional guide wire stomach tube

Abstract

The invention provides a multifunctional guide wire stomach tube which comprises a stomach tube body and a guide wire inserted into the stomach tube body, the front end of the guide wire extends to the front end of the stomach tube body, a side hole is formed in the side wall of the front end of the stomach tube body, and a first PH sensor and a first air pressure sensor are arranged at the front end of the guide wire. The signal output end of the first PH sensor and the signal output end of the first air pressure sensor are connected with the first PH value input end and the first air pressure input end of the controller respectively. According to the guide wire stomach tube, the first air pressure sensor and the first PH sensor are arranged, when the guide wire stomach tube is inserted, the first air pressure sensor monitors the air pressure in the stomach tube body in real time, the first PH sensor monitors the PH value of fluid entering the stomach tube body in real time, and whether the front end of the stomach tube body is located in an airway or not is judged according to the air pressure value in the stomach tube body; whether the front end of the stomach tube body is inserted into the stomach or not is judged according to the PH value of fluid in the stomach tube body, so that whether the front end of the stomach tube body is located in the airway or the stomach or not is determined.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular relates to a multifunctional guide wire gastric tube. Background Art

[0002] In clinical use in hospitals, gastric tubes are mainly used for gastrointestinal decompression during surgery for chest and abdominal patients, enteral nutrition supply and gastric lavage for critically ill patients. Guidewire gastric tubes use a guidewire inserted into the gastric tube to increase the hardness of the gastric tube to achieve gastric tube placement for special patients. Guidewire gastric tubes have been widely used.

[0003] For example, CN201310470885.7 discloses a gastric tube, which increases its toughness by placing a guide wire in the lumen of the gastric tube body without affecting its softness, thereby effectively improving the success rate of one-time insertion during the insertion operation; by setting scales on the outside of the tube wall of the gastric tube body, medical staff can accurately operate the insertion length of the gastric tube, thereby effectively alleviating the patient's pain.

[0004] Although the above technical solution can intuitively show the insertion depth of the gastric tube through the scale, it cannot determine the specific position of the gastric tube tip (in the stomach, airway or oral cavity). For example, when the gastric tube is inserted to the same depth for an adult of 1.5 meters and an adult of 1.9 meters, the specific position of the gastric tube tip is different. Therefore, a multifunctional gastric tube that can accurately reflect the specific position of the gastric tube tip is urgently needed. Summary of the invention

[0005] The present invention aims to solve the technical problems existing in the prior art, and the purpose of the present invention is to provide a multifunctional guide wire gastric tube.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multifunctional guide wire gastric tube, comprising a gastric tube body, and a guide wire inserted into the tube cavity of the gastric tube body, characterized in that the front end of the guide wire extends to the front end of the gastric tube body, a side hole is provided on the front end side wall of the gastric tube body, and a first pH sensor and / or a first air pressure sensor are provided at the front end of the guide wire, and the signal output ends of the first pH sensor and the first air pressure sensor are respectively connected to the first pH value input end and the first air pressure input end of the controller.

[0007] The above technical scheme, by setting a first air pressure sensor and / or a first PH sensor, when the guide wire gastric tube is inserted, the first air pressure sensor monitors the air pressure in the gastric tube body in real time, and the first PH sensor monitors the PH value of the fluid entering the gastric tube body in real time, and determines whether the front end of the gastric tube body is located in the airway according to the air pressure value in the gastric tube body, and determines whether the front end of the gastric tube body is inserted into the stomach according to the PH value of the fluid in the gastric tube body, thereby determining whether the front end of the gastric tube body is located in the airway or in the stomach.

[0008] In a preferred embodiment of the present invention, the controller is connected to a color display device; the controller includes a first comparator and a second comparator; the output end of the first PH sensor is connected to the first input end of the first comparator, the second input end of the first comparator is connected to the first PH value storage module, and the output end of the first comparator is connected to the control end of the first color indicator light of the color display device; the output end of the first air pressure sensor is connected to the second input end of the second comparator, the first input end of the second comparator is connected to the first air pressure storage module, and the output end of the second comparator is connected to the control end of the second color indicator light of the color display device.

[0009] The above technical solution, by setting a color display device, when the front end of the gastric tube body is in the airway, the first color indicator light is on, and when the front end of the gastric tube body is in the stomach, the second color indicator light is on, prompting the operator, so that the operator can know the specific position of the front end of the gastric tube body.

[0010] In a preferred embodiment of the present invention, the output end of the first comparator is connected to the first analog-to-digital conversion module, the first analog-to-digital conversion module is connected to the first input end of the OR gate through the first NOT gate, the output end of the second comparator is connected to the second analog-to-digital conversion module, the second analog-to-digital conversion module is connected to the second input end of the OR gate through the second NOT gate, and the output end of the OR gate is connected to the control end of the third color indicator light of the color display device.

[0011] The above technical solution sets a third color indicator light. When the front end of the gastric tube body is in the oral cavity, the third color indicator light lights up to prompt the operator.

[0012] In a preferred embodiment of the present invention, a fixer disposed outside the body of the stomach tube and used for fixing the stomach tube body is further provided on the outer wall of the stomach tube body.

[0013] In the above technical solution, the fixator is used to fix the gastric tube body outside the body to prevent the gastric tube body from slipping and shifting.

[0014] In a preferred embodiment of the present invention, the fixer is detachably fixed to the gastric tube body by means of adhesive tape; and / or a temperature sensor for detecting the temperature of food flowing through the gastric tube body is provided on the fixer, the signal output end of the temperature sensor is connected to the temperature input end of the controller, and the alarm controller of the controller is connected to the alarm.

[0015] In the above technical solution, the tape bonding method allows the position of the fixer to be adjusted at will, and the position can be fixed according to actual conditions; when the gastric tube body is used to supply food to the patient, the temperature sensor senses the temperature of the food in the gastric tube body. When the food is too cold or too hot, the alarm sounds an alarm to remind the staff.

[0016] In another preferred embodiment of the present invention, a temperature regulating member capable of regulating the temperature of food flowing through the gastric tube body is provided on the fixator, and the temperature control output end of the controller is connected to the enabling end of the temperature regulating member.

[0017] In the above technical solution, the temperature regulating member heats or cools the food flowing through the gastric tube body, so that the temperature of the food eaten by the patient is appropriate, thereby improving the comfort level.

[0018] In another preferred embodiment of the present invention, a second air pressure sensor for detecting the air pressure in the gastric tube body is installed in the side wall of the gastric tube body, and the signal output end of the second air pressure sensor is connected to the second air pressure input of the controller; and / or a second pH sensor for detecting the pH value of the fluid in the gastric tube body is installed at a position corresponding to the esophagus in the side wall of the gastric tube body, and the signal output end of the second pH sensor is connected to the second pH value input end of the controller; and / or a blood sensor for detecting whether there is blood in the gastric fluid is installed in the front end side wall of the gastric tube body, and the signal output end of the blood sensor is connected to the blood input end of the controller.

[0019] The above technical solution, by setting a second air pressure sensor, when blockage occurs in the gastric tube body, it can be sensed by the second air pressure sensor, so that the staff can promptly know the patient's abnormal condition; by setting a second PH sensor, when the patient has acid reflux in the stomach, it can be sensed by the second PH sensor, so that the staff can promptly know the patient's abnormal condition; by setting a blood sensor, when acid reflux occurs in the patient's stomach, it can be sensed by the blood sensor, so that the staff can promptly know the patient's abnormal condition.

[0020] In another preferred embodiment of the present invention, a bag made of a soft elastic material is provided on the outer wall of the front end of the gastric tube body, and the side wall of the bag is a double-layer structure with an air cavity, and the bag can expand / shrink by inflating / deflating the air cavity; in normal state, the bag is in a deflated state, the position of the bag corresponding to the side hole is concave, and the side hole can be exposed to the outside; by inflating the air cavity to expand the bag, the upper end of the bag can extend upward to above the side hole, and the liquid discharged through the side hole can be caught by the bag.

[0021] The above technical solution, by providing a bag that can expand and shrink, when cleaning the inside of the gastric tube body, the cleaning liquid enters the bag through the side hole and is caught by the bag, which can prevent the cleaning liquid from entering the stomach and is more hygienic.

[0022] In another preferred embodiment of the present invention, a gas injection port is provided on the gastric tube body, and a gas injection channel connected to the gas injection port and the bag air cavity is provided in the gastric tube body; the gas injection channel is a cavity formed on the inner wall of the gastric tube body and extending along the length direction of the gastric tube body, or the gas injection channel is a gas injection tube provided in the gastric tube body.

[0023] In the above technical solution, the inflation device is connected to the gas injection port, and the gas enters the air cavity of the side wall of the bag pocket through the gas injection port and the gas injection channel. The inflation method is simple and reliable, and two implementation methods of the gas injection channel are provided.

[0024] In another preferred embodiment of the present invention, a magnetic part made of magnetic material is provided at the upper end of the bag on one side of the side hole, and a magnetic attraction component is provided on the outer wall at the front end of the gastric tube body above the side hole. The power control end of the magnetic attraction component is connected to the controller, and the magnetic attraction component can be attracted to the magnetic part by energizing the magnetic attraction component.

[0025] In the above technical solution, air is inflated into the air cavity to expand the bag. When the upper end of the bag extends upward to above the side hole, the magnetic suction component is energized to generate suction to attract the magnetic part to fix the upper end of the bag, increase the strength of the bag, and enable the bag to better hold the cleaning liquid.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a structural schematic diagram of a multifunctional guide wire gastric tube in embodiment 1.

[0029] Figure 2 The second embodiment is a schematic diagram of the structure of the bag bag at the front end of the stomach tube. Figure 1 , the sac is in a shrunken state.

[0030] Figure 3 The second embodiment is a schematic diagram of the structure of the bag bag at the front end of the stomach tube. Figure 2 , the sac is in an expanded state.

[0031] The figure marks in the drawings of the specification include: gastric tube body 1, guide wire 2, side hole 3, first pH sensor 4, first air pressure sensor 5, fixer 6, temperature sensor 7, temperature adjustment part 8, second air pressure sensor 9, second pH sensor 10, blood sensor 11, bag 12, air cavity 13, reinforcing rib 14, gas injection port 15, gas injection channel 16, magnetic part 17, magnetic attraction part 18. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0035] The present invention provides a multifunctional guide wire gastric tube, such as Figure 1 As shown, in a preferred embodiment, the guide wire gastric tube includes a gastric tube body 1, and a guide wire 2 inserted into the tube cavity of the gastric tube body 1, the front end of the guide wire 2 extends to the front end of the gastric tube body 1, and a side hole 3 is provided on the side wall of the front end of the gastric tube body 1; the front end of the guide wire 2 is provided with a first PH sensor 4 (specifically, Mettler-Toledo InPro3253 i type) and / or a first air pressure sensor 5 (specifically, MPS-3117-006GC type) , Preferably, the first PH sensor and the first air pressure sensor 5 are provided at the same time, and the signal output ends of the first PH sensor 4 and the first air pressure sensor 5 are respectively connected to the first PH value input end and the first air pressure input end of the controller (not shown in the figure).

[0036] In the utility model, a guide wire 2 is placed in the lumen of the gastric tube body 1. When the gastric tube body 1 is inserted, the guide wire 2 can increase the toughness of the gastric tube body 1, thereby effectively improving the success rate of one-time insertion. When the guide wire gastric tube is inserted, the first air pressure sensor 5 monitors the air pressure in the gastric tube body 1 in real time, and the first PH sensor 4 monitors the PH value of the fluid entering the gastric tube body 1 in real time. When the air pressure value in the gastric tube body 1 measured by the first air pressure sensor 5 is at the first air pressure (the first air pressure value can be 1.5-2.0KPa), it indicates that the front end of the gastric tube body 1 is located in the airway (because the normal pressure in the stomach is 20-50mmHg column, about 2.66-6.65KPa, and the pressure value of the airway is 20cmH2O column, about 1.961KPa, and the pressure value in the airway is less than the air pressure value in the stomach); when the PH value of the fluid in the gastric tube body 1 measured by the first PH sensor 4 is less than the first PH value, it indicates that gastric fluid enters the gastric tube body 1 through the side hole 3, and the front end of the gastric tube body 1 has been inserted into the stomach, so as to determine whether the front end of the gastric tube body 1 is located in the airway or in the stomach. After the gastric tube body 1 is inserted into the stomach, the guide wire 2 can be removed, and gastrointestinal decompression, enteral nutrition supply and gastric lavage for critically ill patients can be performed through the gastric tube body 1 .

[0037] It should be noted that when the front end of the gastric tube body 1 is neither in the airway nor in the stomach, it indicates that the gastric tube body 1 extends into the oral cavity or is coiled in the oral cavity.

[0038] In a preferred embodiment, the controller is connected to a color display device (not shown in the figure), and the controller includes a first comparator and a second comparator. The output end of the first pH sensor 4 is connected to the first input end of the first comparator, the second input end of the first comparator is connected to the first pH value storage module, and the output end of the first comparator is connected to the control end of the first color indicator light of the color display device; the output end of the first air pressure sensor 5 is connected to the second input end of the second comparator, the first input end of the second comparator is connected to the first air pressure storage module, and the output end of the second comparator is connected to the control end of the second color indicator light of the color display device.

[0039] By setting up a color display device, when the front end of the gastric tube body 1 is in the airway, the first color indicator light of the color display device lights up to prompt the operator; when the front end of the gastric tube body 1 is in the stomach, the second color indicator light of the color display device lights up to prompt the operator.

[0040] Further preferably, the output end of the first comparator is connected to the first analog-to-digital conversion module, the first analog-to-digital conversion module is connected to the first input end of the OR gate through the first NOT gate, the output end of the second comparator is connected to the second analog-to-digital conversion module, the second analog-to-digital conversion module is connected to the second input end of the OR gate through the second NOT gate, and the output end of the OR gate is connected to the control end of the third color indicator light of the color display device. Thus, when the front end of the gastric tube body 1 is in the oral cavity, the third color indicator light of the color display device lights up to prompt the operator.

[0041] In another preferred embodiment, a fixer 6 disposed outside the body for fixing the stomach tube body 1 is further provided on the outer wall of the stomach tube body 1. After the stomach tube body 1 is inserted into the stomach, the fixer 6 is used to fix the end of the stomach tube body 1 outside the oral cavity to prevent the stomach tube body 1 from slipping and shifting. The specific method of fixing the stomach tube body 1 by the fixer 6 can adopt the existing technology, which is not described in detail here. Preferably, the fixer 6 is detachably fixed to the stomach tube body 1 by adhesive tape, so that the position of the fixer 6 can be adjusted at will.

[0042] In another preferred embodiment, a temperature sensor 7 for detecting the temperature of food flowing through the gastric tube body 1 is provided on the fixture 6, and the signal output end of the temperature sensor 7 is connected to the temperature input end of the controller, and the alarm controller of the controller is connected to an alarm (not shown in the figure); the specific temperature sensor 7 can be a sheet sensor fixed on the fixture 6 (such as disclosed in CN201210572159.1 or CN202121807876.9), and the sheet sensor is attached to the outer wall of the gastric tube body 1. When the gastric tube body 1 is used to supply food to the patient, the temperature sensor 7 senses the temperature of the food in the gastric tube body 1. When the food is too cold or too hot, the alarm sounds an alarm to remind the staff.

[0043] Further preferably, the fixer 6 is provided with a temperature regulating member 8 capable of regulating the temperature of food flowing through the gastric tube body 1, and the temperature control output end of the controller is connected to the enabling end of the temperature regulating member 8. Specifically, the temperature regulating member 8 can adopt a semiconductor chip that can cool and heat and is fixed on the fixer 6 (the specific use of semiconductor chips for cooling and heating is a prior art and is not described in detail here). The semiconductor chip is attached to the outer wall of the gastric tube body 1. When the food in the gastric tube body 1 is too cold, it is heated to increase the temperature. When the food in the gastric tube body 1 is overheated, it is cooled to reduce the temperature.

[0044] In another preferred embodiment, a second air pressure sensor 9 for detecting the air pressure in the gastric tube body 1 is installed in the side wall of the gastric tube body 1, and the signal output end of the second air pressure sensor 9 is connected to the second air pressure input of the controller; the specific model of the second air pressure sensor 9 can be the same as the first air pressure sensor 5, and the second air pressure sensor 9 is embedded in the side wall of the gastric tube body 1, and its sensing end is located in the gastric tube body 1, and the second air pressure sensor 9 is preferably located at a position corresponding to the patient's airway. After the gastric tube body 1 is inserted into the stomach, the second air pressure sensor 9 is used to detect the air pressure in the gastric tube body 1. When the air pressure value measured by the second air pressure sensor 9 drops significantly, it indicates that a blockage occurs in the gastric tube body 1, and the alarm sounds an alarm to remind the staff.

[0045] In another preferred embodiment, a second PH sensor 10 for detecting the PH value of the fluid in the gastric tube body 1 is installed at a position corresponding to the patient's esophagus in the side wall of the gastric tube body 1, and the signal output end of the second PH sensor 10 is connected to the second PH value input end of the controller; the specific model of the second PH sensor 10 can be the same as the first PH sensor 4, and the second PH sensor 10 is embedded in the side wall of the gastric tube body 1, and its sensing end is located in the gastric tube body 1. The second PH sensor 10 is used to detect the PH value of the fluid in the gastric tube body 1. When the PH value of the fluid measured by the second PH sensor 10 decreases significantly, it indicates that there is gastric acid refluxed from the stomach in the gastric tube body 1, and the alarm sounds an alarm to remind the staff.

[0046] In another preferred embodiment, a blood sensor 11 for detecting whether there is blood in the gastric fluid is installed in the front end side wall of the gastric tube body 1, and the signal output end of the blood sensor 11 is connected to the blood input end of the controller; the specific blood sensor 11 can be embedded in the side wall of the gastric tube body 1, and its sensing end is located inside the gastric tube body 1, such as the sensor disclosed in CN202010697924.7. After the gastric tube body 1 is inserted into the stomach, the blood sensor 11 is used to detect whether there is bleeding in the patient's stomach. When the blood sensor 11 detects bleeding in the patient's stomach, the alarm sounds an alarm to alert the staff.

[0047] It should be noted that when patients have different abnormal conditions, the alarm can emit alarm lights of different colors, different voices, or different problem codes to help staff quickly find the abnormality.

[0048] Embodiment 2

[0049] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that the present embodiment is provided with a bag 12. Figure 2 and Figure 3As shown, in this embodiment, a bag 12 made of a soft elastic material with an opening at the upper end is provided on the outer wall of the front end of the gastric tube body 1. For example, the bag 12 is made of medical rubber, is elastic, and can expand and shrink. The side wall of the bag 12 is a double-layer structure with an air cavity 13. By inflating / deflating the air cavity 13, the bag 12 can expand / shrink.

[0050] In normal state, the air cavity 13 is deflated, the bag 12 is in a shrunken state, and the position of the bag 12 corresponding to the side hole 3 is concave, so that the side hole 3 at the front end of the gastric tube body 1 can be exposed to the outside, without affecting the gastrointestinal decompression, enteral nutrition supply and gastric lavage functions of the gastric tube.

[0051] When it is necessary to clean the inside of the gastric tube body 1 (for example, before each meal, the inside of the gastric tube is cleaned to reduce bacterial growth and be more hygienic), the air cavity 13 is inflated to expand the bag 12 outward and upward, and the upper end of the bag 12 extends upward to the top of the side hole 3. Then, a cleaning liquid is used to clean the inside of the gastric tube body 1. The cleaning method is the existing technology and is not described in detail here. During the cleaning process, the cleaning liquid entering the gastric tube body 1 flows downward, and finally flows into the bag 12 through the side hole 3 at the front end of the gastric tube body 1 and is held by the bag 12, which can prevent the cleaning liquid from entering the stomach. Then, the adsorption tube is extended into the bag 12, and the cleaning liquid in the bag 12 is sucked out by the negative pressure device. By repeatedly flushing the inside of the gastric tube body 1 and sucking out the cleaning liquid, the inside of the gastric tube body 1 can be cleaned.

[0052] In this embodiment, a gas injection port 15 is provided at the end of the gastric tube body 1, and a gas injection channel 16 is provided in the gastric tube body 1, which is connected to the gas injection port 15 and the air cavity 13 of the bag 12. The inflation device is connected to the gas injection port 15, and the gas enters the side wall of the bag 12 through the gas injection port 15 and the gas injection channel 16, so that the bag 12 expands, and the upper end of the bag 12 extends upward to the top of the side hole 3, and the bag 12 serves as a container for the cleaning liquid. Among them, the gas injection channel 16 is a cavity formed on the inner wall of the gastric tube body 1 and extending along the length direction of the gastric tube body 1, or the gas injection channel 16 is a gas injection tube provided in the gastric tube body 1.

[0053] Preferably, a plurality of reinforcing ribs 14 are provided in the air cavity 13, and the reinforcing ribs 14 connect the inner layer and the outer layer of the side wall of the bag 12. When the bag 12 is inflated, the inner layer of the side wall of the bag 12 can be prevented from expanding too much and reducing the space inside the bag 12, thereby ensuring that there is enough space inside the bag 12 to accommodate the cleaning liquid.

[0054] In one embodiment of the present invention, a bag 12 with a semi-circle structure is provided only on one side of the side hole 3 of the gastric tube body 1, and the two side ends and the lower end of the bag 12 are fixedly connected to the outer wall of the gastric tube body 1, and the top of the bag 12 is open. In a normal state, the position of the bag 12 corresponding to the side hole 3 is concave, so that the side hole 3 at the front end of the gastric tube body 1 can be exposed to the outside; in another embodiment, a full circle of the bag 12 is provided on the gastric tube body 1, and the position of the bag 12 corresponding to the side hole 3 is a concave structure, and the parts of the bag 12 located on both sides of the side hole 3 are connected, which can expand the volume of the bag 12 on the one hand, and increase the stability of the bag 12 on the other hand, so as to better hold the cleaning fluid.

[0055] In another preferred embodiment, a magnetic member 17 made of magnetic material is provided at the upper end of the bag 12 located on one side of the side hole 3 (for example, a layer of magnetic material is sprayed on the upper end of the bag 12, or a small iron ball is embedded in the upper end of the bag 12), and a magnetic attraction component 18 located above the side hole 3 is provided on the outer wall of the front end of the stomach tube body 1 (for example, an electromagnet is embedded on the outer wall of the stomach tube body), and the power-on control end of the magnetic attraction component 18 is connected to the controller, and the magnetic attraction component 18 can be attracted to the magnetic member 17 by energizing the magnetic attraction component 18. When the air cavity 13 is inflated to expand the bag 12, and the upper end of the bag 12 extends upward to the top of the side hole 3, the magnetic attraction component 18 is energized to generate suction to attract the magnetic member 17 to fix the upper end of the bag 12 (at this time, the upper end of the bag 12 is not closed, breathable, and does not affect the cleaning of the inside of the stomach tube body 1), increase the strength of the bag 12, and enable the bag 12 to better hold the cleaning liquid.

[0056] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0057] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multifunctional guide wire gastric tube, comprising a gastric tube body and a guide wire inserted into the lumen of the gastric tube body, characterized in that: The front end of the guide wire extends to the front end of the gastric tube body, and a side hole is provided on the front end side wall of the gastric tube body. The front end of the guide wire is provided with a first PH sensor and / or a first air pressure sensor, and the signal output ends of the first PH sensor and the first air pressure sensor are respectively connected to the first PH value input end and the first air pressure input end of the controller.

2. A multifunctional guide wire gastric tube according to claim 1, characterized in that: The controller is connected to a color display device; The controller includes a first comparator and a second comparator; The output end of the first PH sensor is connected to the first input end of the first comparator, the second input end of the first comparator is connected to the first PH value storage module, and the output end of the first comparator is connected to the control end of the first color indicator light of the color display device; The output end of the first air pressure sensor is connected to the second input end of the second comparator, the first input end of the second comparator is connected to the first air pressure storage module, and the output end of the second comparator is connected to the control end of the second color indicator light of the color display device.

3. A multifunctional guide wire gastric tube according to claim 2, characterized in that: The output end of the first comparator is connected to the first analog-to-digital conversion module, the first analog-to-digital conversion module is connected to the first input end of the OR gate through the first NOT gate, the output end of the second comparator is connected to the second analog-to-digital conversion module, the second analog-to-digital conversion module is connected to the second input end of the OR gate through the second NOT gate, and the output end of the OR gate is connected to the control end of the third color indicator light of the color display device.

4. A multifunctional guide wire gastric tube according to claim 1, characterized in that: The outer wall of the stomach tube body is also provided with a fixer arranged outside the body for fixing the stomach tube body.

5. A multifunctional guide wire gastric tube according to claim 4, characterized in that: The fixator is detachably fixed to the gastric tube body by means of adhesive tape; And / or the fixer is provided with a temperature sensor for detecting the temperature of food flowing through the gastric tube body, the signal output end of the temperature sensor is connected to the temperature input end of the controller, and the alarm controller of the controller is connected to the alarm.

6. A multifunctional guide wire gastric tube according to claim 5, characterized in that: The fixer is provided with a temperature regulating component capable of regulating the temperature of food flowing through the stomach tube body, and the temperature control output end of the controller is connected to the enabling end of the temperature regulating component.

7. A multifunctional guide wire gastric tube according to any one of claims 1 to 6, characterized in that: A second air pressure sensor for detecting the air pressure in the gastric tube body is installed in the side wall of the gastric tube body, and a signal output end of the second air pressure sensor is connected to a second air pressure input of the controller; And / or a second pH sensor for detecting the pH value of the fluid in the gastric tube body is installed at a position corresponding to the esophagus in the side wall of the gastric tube body, and a signal output end of the second pH sensor is connected to a second pH value input end of the controller; And / or a blood sensor for detecting whether there is blood in the gastric fluid is installed in the front end side wall of the gastric tube body, and the signal output end of the blood sensor is connected to the blood input end of the controller.

8. A multifunctional guide wire gastric tube according to any one of claims 1 to 6, characterized in that: A bag made of soft elastic material is provided on the outer wall of the front end of the stomach tube body, and the side wall of the bag is a double-layer structure with an air cavity. The bag can expand / shrink by inflating / deflating the air cavity; In normal state, the bag is in a collapsed state, the position of the bag corresponding to the side hole is concave, and the side hole can be exposed to the outside; The bag is expanded by inflating air into the air cavity, so that the upper end of the bag can extend upward to above the side hole, and the liquid discharged through the side hole can be caught by the bag.

9. A multifunctional guide wire gastric tube according to claim 8, characterized in that: The stomach tube body is provided with a gas injection port, and the stomach tube body is provided with a gas injection channel connected with the gas injection port and the air cavity of the bag; The gas injection channel is a cavity formed on the inner wall of the gastric tube body and extending along the length direction of the gastric tube body, or the gas injection channel is a gas injection tube arranged in the gastric tube body.

10. The multifunctional guide wire gastric tube according to claim 8, characterized in that: A magnetic part made of magnetic material is provided at the upper end of the bag located on one side of the side hole, and a magnetic attraction component is provided on the outer wall of the front end of the gastric tube body located above the side hole. The power control end of the magnetic attraction component is connected to the controller, and by energizing the magnetic attraction component, the magnetic attraction component can be attracted to the magnetic part.

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