Novel conductivity stomach tube capable of detecting insertion position

Abstract

The novel conductivity stomach tube capable of detecting the insertion position comprises a flexible stomach tube body, a stomach tube opening sampling end is arranged at one end of the stomach tube body, and a stomach tube opening detecting end is arranged at the other end of the stomach tube body. A cavity liquid conductivity detection device is arranged at the stomach tube opening detection end in a matched manner; a conductive wire is embedded in each of the two sides in the tube body between the inner tube wall and the outer tube wall of the stomach tube body, the stomach tube opening sampling end comprises an arc-surface protective sleeve integrally connected with the stomach tube body and a cavity liquid inlet formed in the arc-surface protective sleeve, and the conductive wires embedded in the two sides in the tube body extend to the cavity liquid inlet; real-time cavity liquid conductivity data is obtained through the stomach tube position detection device, the position of the stomach tube opening sampling end can be accurately judged, use is convenient and safe, cost is lower, and the occurrence of stomach tube misplug accidents in clinic can be reduced.

Description

Technical Field

[0001] The utility model relates to a medical detection device, in particular to a novel conductivity stomach tube capable of detecting an insertion position. Background Art

[0002] A gastric tube is a long, thin tube, usually made of a soft material, such as plastic or rubber. It is usually passed through the mouth and esophagus and is used to introduce food and water into the stomach. In medical situations, a gastric tube can also be used to deliver medications, nutrient solutions, and other substances to the stomach. A gastric tube is often used by doctors during surgery, examinations, or treatments of stomach diseases. Using a gastric tube can help doctors more easily access the stomach to examine or treat diseases. For certain stomach diseases, such as gastric ulcers, acid reflux, and gastric bleeding, a gastric tube can also be used to relieve symptoms or promote recovery. In the process of inserting a catheter into the corresponding part of the human body, it is easy to insert the catheter into other parts and cause damage to the patient, so accurate detection of the position of the gastric tube is crucial.

[0003] At present, there are two main methods for detecting the position of gastric tubes at home and abroad: one involves the judgment method of aspirating liquid; the other is the judgment method that does not involve aspirating liquid. On the one hand, the method involving aspirating human body fluids for detection has major defects. This type of method requires inserting a catheter into the patient's body first, extracting human body fluids such as gastric fluid through the catheter, and then testing the body fluids for physical and chemical indicators such as pH, protease, and bilirubin to infer the position of the catheter. The process is complicated, not only increasing the workload of medical staff, but more importantly, it will bring certain discomfort and risks to patients, such as puncture injuries caused by improper catheter insertion and reflux of body fluids during the extraction process.

[0004] On the other hand, the pressure measurement method that does not involve the suction of liquid also has obvious deficiencies in both the detection principle and the detection means. First, the existing methods are not comprehensive and accurate in their understanding of "pressure changes inside the human body during breathing", and there is a certain degree of one-sidedness. For example, they only pay attention to "pressure in the lungs during exhalation" and ignore important features such as "negative pressure in the lungs during inhalation". Secondly, most of these methods use mechanical strain pressure sensors such as spring pressure gauges. This type of sensor has a low response frequency and low accuracy, and it is difficult to accurately measure tiny pressure changes inside the human body, especially when it is necessary to measure negative pressure (lower than atmospheric pressure). In addition, some patents propose a solution to integrate a pressure sensor in the gastric tube. This approach requires changing the existing standard gastric tube structure, so that the detection device is bundled with a special gastric tube product. Each use requires a pressure sensor to be consumed, resulting in a high cost of use. It also lacks versatility and cannot perform position detection on other pipelines such as the lungs and intestines. Utility Model Content

[0005] The utility model aims to solve the problems that the existing gastric tube position detection device is too complicated, may bring certain discomfort and risks to patients, has high use cost and lacks versatility.

[0006] In order to solve the above problems, the technical solution adopted by the utility model is: a new conductivity gastric tube capable of detecting the insertion position, comprising a flexible gastric tube body, one end of which is provided with a gastric tube mouth sampling end, and the other end of which is provided with a gastric tube mouth detection end; the gastric tube mouth detection end is equipped with a cavity fluid conductivity detection device;

[0007] A conductive wire is buried on each side of the tube body between the inner and outer tube walls of the gastric tube body, one end of the conductive wire extends to the sampling end of the gastric tube opening, and the other end extends to the detection end of the gastric tube opening;

[0008] The sampling end of the gastric tube mouth can be inserted into the stomach along the esophagus under the action of external force. The sampling end of the gastric tube mouth includes an arc-shaped protective sleeve integrally connected with the gastric tube body and a cavity liquid inlet that is connected with the tube wall of the gastric tube body. The conductive wires buried on both sides of the tube body extend to the cavity liquid inlet.

[0009] The detection end of the gastric tube opening is a bell-mouth structure, and two electrodes are embedded inside the bell-mouth structure. One end of the two electrodes is connected to two conductive wires respectively; the other end is connected to the detection end of the device for detecting cavity fluid conductivity.

[0010] Furthermore, the conductive wires are thin copper wires, and two thin copper wires are arranged along the tube wall;

[0011] Furthermore, the conductive wire at the cavity liquid inlet is a spiral structure.

[0012] Furthermore, the stomach tube body adopts a plastic tube with existing caliber and material available on the market.

[0013] Furthermore, the two electrodes are integrally designed as a quick-plug connection row structure, which facilitates quick plugging and unplugging with an external device for detecting the conductivity of the cavity liquid.

[0014] Furthermore, the device for detecting the conductivity of the cavity liquid is equipped with a numerical display screen, which displays the detected conductivity in real time, and the display refresh rate is not less than 20 times per second.

[0015] Furthermore, the device for detecting the conductivity of the cavity fluid is equipped with an alarm device, which determines whether the position of the gastric tube is correct based on the difference in conductivity, and if it is incorrect, an alarm is issued by emitting light or sound.

[0016] Furthermore, a filter screen structure is nested on the cavity liquid inlet to prevent the cavity liquid inlet from being blocked by large particles.

[0017] The beneficial effects and features of the utility model are:

[0018] 1. The new conductivity gastric tube of the utility model can accurately determine the position of the sampling end of the gastric tube mouth by using the real-time cavity fluid conductivity data obtained by the gastric tube position detection device. Compared with various detection devices currently on the market, the cost is lower. After the invention is promoted and applied, the occurrence of gastric tube misinsertion accidents in clinical practice can be reduced, and the gastric tube can be effectively prevented from becoming a "death tube."

[0019] 2. The utility model discloses a novel conductivity gastric tube. The copper wire at the front sampling end of the gastric tube is protected by an arc surface to avoid puncturing the inner membrane. The clinical operation is simple and is the same as the existing gastric tube operation method. It is convenient and safe to use.

[0020] 3. The new conductivity gastric tube of the utility model can be wiped with alcohol or chlorine-containing disinfectant and reused, saving costs; BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the actual detection of the preferred embodiment of the utility model;

[0022] Figure 2 This is a partial structural schematic diagram of a stomach tube body of a preferred embodiment of the utility model;

[0023] Figure 3 This is a partial structural schematic diagram of the sampling end of the gastric tube orifice of a preferred embodiment of the utility model;

[0024] Figure 4 This is a structural schematic diagram of the detection end of the gastric tube opening of a preferred embodiment of the utility model;

[0025] Figure 5 This is a three-dimensional structural diagram of a partial structure of the sampling end of the gastric tube orifice of a preferred embodiment of the utility model;

[0026] The reference numerals in the figure respectively represent: 1-gastric tube mouth sampling end, 2-gastric tube body, 3-gastric tube mouth detection end, 4-cavity fluid conductivity detection device, 11-conductive wire, 12-cavity fluid inlet, 13-arc surface protective cover, 131-liquid inlet hole, 31-electrode. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Please refer to Figure 1 A novel conductivity gastric tube capable of detecting the insertion position comprises a flexible gastric tube body 2, one end of the gastric tube body 2 is provided with a gastric tube mouth sampling end 1, and the other end is provided with a gastric tube mouth detection end 3; the gastric tube mouth detection end 3 is equipped with a cavity fluid conductivity detection device 4;

[0029] Please refer to Figure 2A conductive wire 11 is buried on each side of the tube body between the inner and outer tube walls of the gastric tube body 1, one end of the conductive wire 11 extends to the sampling end 1 of the gastric tube opening, and the other end extends to the detection end 3 of the gastric tube opening;

[0030] Please refer to Figure 3 The sampling end 1 of the gastric tube mouth can be inserted into the stomach along the esophagus under the action of external force. The sampling end 1 of the gastric tube mouth includes an arc-shaped protective cover 13 connected to the gastric tube body 2 (for example, a protective cover made of silicone material. In order to facilitate the gastric tube body at the sampling end to be quickly filled with gastric fluid, a plurality of liquid inlet holes 131 can be provided on the protective cover made of silicone material) and a cavity liquid inlet 12 that is connected to the wall of the gastric tube body. The conductive wires 11 buried on both sides of the tube body extend to the cavity liquid inlet 12; the conductive wires 11 at the cavity liquid inlet can be designed as a spiral structure (see Figure 5 , can increase the contact area with the cavity fluid, improve the stability and detection accuracy of the detection, in another embodiment, two conductive plates can also be fixed at the end of the conductive wire) The stomach tube body can be consistent with the stomach tubes of different materials, different specifications, and different diameters commonly used in the clinic. In the gastric tube production and sealing stage, two thin conductive wires, such as copper wires, are implanted in advance and cast in an integrated manner. The gastric tube mouth detection end is the part of the stomach tube exposed outside the human body. The tube mouth is the end of the stomach tube. The tube mouth position is the connection port of the copper wire and the external detection device. First, it is necessary to ensure two reliable connections in the structure, and second, it is necessary to ensure that the copper wire loop is in reliable contact. The gastric tube position detection device should have the function of detecting the resistance of the copper wire loop. Based on the detected loop resistance minus the resistance of the copper wire of the stomach tube itself, the resistance of the cavity fluid can be obtained, thereby calculating the conductivity of the cavity fluid. According to the difference in the conductivity of the cavity fluid in different parts, the real-time position of the gastric tube mouth sampling end can be judged.

[0031] Please refer to Figure 4 The gastric tube opening detection end 3 is a bell-mouth structure, and two electrodes 31 are embedded inside the bell-mouth structure. One end of the two electrodes 31 is connected to two conductive wires 11 respectively; the other end is connected to the detection end of the cavity fluid conductivity detection device 4.

[0032] As a preferred solution, the conductive wire 11 is a thin copper wire. Two thin copper wires are arranged along the tube wall, and both ends are connected to the sampling end and the detection end respectively. The two copper wires are not directly connected, and a loop is formed through the cavity liquid and the detection device.

[0033] As a preferred solution, the stomach tube body 2 is a plastic tube of existing caliber and material on the market, such as a nasogastric feeding tube.

[0034] As a preferred solution, the two electrodes 31 are integrally designed as a quick-plug connection row structure, which facilitates quick plugging and unplugging with an external device for detecting the conductivity of the cavity liquid.

[0035] As a preferred solution, the device 4 for detecting the conductivity of the cavity liquid is equipped with a numerical display screen to display the detected conductivity in real time, and the display refresh rate is not less than 20 times per second.

[0036] As a preferred solution, the cavity fluid conductivity detection device 4 is equipped with an alarm device, which determines whether the position of the gastric tube is correct based on the difference in conductivity. If it is incorrect, an alarm is issued by emitting light or sound. For example: when the detected cavity fluid conductivity value is within the preset gastric fluid conductivity range, it indicates that the sampling end of the gastric tube orifice is located in the stomach, and the sound and light alarm unit does not issue an alarm signal or issues an indication that the green indicator light is long on; when the detected cavity fluid conductivity value is close to 0, it indicates that the sampling end of the gastric tube orifice is located in the air, and the sound and light alarm unit issues a sound alarm and a red flashing warning light alarm, prompting the operator that the gastric tube may have mistakenly entered the airway and needs to be reinserted; when the detected cavity fluid conductivity value deviates significantly from the normal range of gastric fluid and air, the sound and light alarm unit issues another sound and a yellow warning light alarm, prompting the operator that the gastric tube may be in an abnormal position and needs further confirmation. Preferably, the sound and light alarm unit includes components such as a buzzer and a light emitting diode, which can emit sounds of different tones and light signals of different colors. Preferably, the alarm module also includes a vibration alarm unit, which is used to enhance the alarm effect by vibration while emitting the sound and light alarm. Through the above alarm design, the operator can accurately judge the specific position of the gastric tube insertion according to different sound, light and vibration alarm effects, so as to make timely adjustments and reduce the operation risk;

[0037] As a preferred solution, in order to prevent the cavity liquid inlet 12 from causing inaccurate measured data, a filter structure is nested on the cavity liquid inlet 12 to prevent the cavity liquid inlet from being blocked by large particles.

[0038] Please refer to Figure 4 The specific method of using this device is:

[0039] 1) Insert the gastric tube body and the sampling end of the gastric tube mouth into the patient's body according to the correct operation procedures, and make sure that the length of the gastric tube body inserted meets the standard;

[0040] 2) Selecting a corresponding external gastric tube position detection device according to the specifications of the implanted gastric tube;

[0041] 3) plugging the gastric tube position detection device into the gastric tube opening detection end;

[0042] 4) Turn on the power switch of the device 4 for detecting the conductivity of the cavity fluid, start collecting the conductivity data, observe the changes in the conductivity data on the screen, and observe for 2-3 minutes. If the displayed conductivity data is equivalent to the conductivity of the gastric fluid, it means that the sampling end of the gastric tube port is in the stomach; if the conductivity data is equivalent to the conductivity of the air, it proves that the sampling end of the gastric tube port has mistakenly entered the lungs, and the sampling end of the gastric tube port 1 is immediately pulled out and reinserted. You can also observe the indication of the alarm module to assist in judging whether the sampling end of the gastric tube port 1 has been correctly inserted into the patient's stomach.

[0043] 5) Take out the sampling end of the gastric tube and wipe the gastric tube body and the sampling end of the gastric tube with alcohol for disinfection.

[0044] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the description only illustrate the structural relationship and principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A novel conductivity gastric tube capable of detecting insertion position, characterized in that: The invention comprises a flexible stomach tube body (2), wherein a stomach tube mouth sampling end (1) is arranged at one end of the stomach tube body (2), and a stomach tube mouth detection end (3) is arranged at the other end; the stomach tube mouth detection end (3) is matched with a cavity fluid conductivity detection device (4); A conductive wire (11) is embedded in each of the two sides of the tube body between the inner and outer tube walls of the gastric tube body (2), one end of the conductive wire (11) extends to the sampling end (1) of the gastric tube opening, and the other end extends to the detection end (3) of the gastric tube opening; The gastric tube mouth sampling end (1) can be inserted into the stomach along the esophagus under the action of external force, and the gastric tube mouth sampling end (1) comprises an arc surface protection sleeve (13) integrally connected with the gastric tube body (2) and a cavity liquid inlet (12) penetrating through the tube wall of the gastric tube body, and conductive wires (11) buried on both sides of the tube body extend to the cavity liquid inlet (12); The gastric tube opening detection end (3) is in a bell-mouth structure, and two electrodes (31) are embedded inside the bell-mouth structure. One end of the two electrodes (31) is connected to two conductive wires (11) respectively; the other end is connected to the detection end of the cavity fluid conductivity detection device (4).

2. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The conductive wires (11) are thin copper wires, and two thin copper wires are arranged along the tube wall.

3. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The conductive wire (11) at the cavity liquid inlet is a spiral structure.

4. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The stomach tube body (2) is a plastic tube of existing caliber and material available on the market.

5. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The two electrodes (31) are integrally designed as a connection row structure that can be quickly plugged in and out.

6. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The device (4) for detecting the conductivity of the cavity liquid is equipped with a numerical display screen for displaying the detected conductivity in real time.

7. The novel conductivity gastric tube with detectable insertion position according to claim 1, characterized in that: The device (4) for detecting the conductivity of the cavity fluid is equipped with an alarm device, which determines whether the position of the gastric tube is correct based on the difference in conductivity. If it is incorrect, an alarm is issued by emitting light or sound.

8. The novel conductivity gastric tube with detectable insertion position according to any one of claims 1 to 7, characterized in that: The cavity liquid inlet (12) is also nested with a filter screen structure to prevent the cavity liquid inlet from being blocked by large particles.

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