Positioning assembly comprising stomach tube capable of being traced and positioned

Abstract

The utility model relates to a positioning assembly comprising a stomach tube capable of being traced and positioned. The positioning assembly comprises a stomach tube and a stomach tube position detection unit configured to be tightly attached to the abdomen under the action of external force, and the stomach tube position detection unit comprises a stomach tube far-end sensing assembly capable of sending out a warning signal when the stomach tube approaches and a shell configured to contain the stomach tube far-end sensing assembly. A gravity assembly capable of being sensed by the stomach tube position detection unit is arranged at the far end of the stomach tube. The stomach tube can accurately reach a target position every time, discomfort and potential complications brought to a patient are reduced, and it is ensured that the tail end of the stomach tube is always kept at a preset position under the condition that the stomach tube is prone to displacement after the body position of the patient is changed, so that the risk of backflow is reduced.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a positioning component comprising a traceable positioning stomach tube. Background Art

[0002] Determining the correct position of the gastric tube in the patient's stomach is a critical step. This step plays a decisive role in whether the gastric tube can be used safely, because if the gastric tube is placed improperly, serious consequences may occur, such as aspiration pneumonia (inflammation caused by gastric contents accidentally entering the lungs). Before performing nasogastric tube feeding, medical staff must ensure that the end of the gastric tube is in the appropriate position in the stomach, which may be achieved through observation or the use of special equipment. The position of the end of the gastric tube is crucial to the patient's dietary management. In some cases, especially for patients who are frail or need to stay in bed for a long time, if the end of the gastric tube does not reach the stomach or is in the stomach but too close to the cardia, food may reflux during feeding, and even during non-feeding periods, it may cause gastric acid reflux, causing esophageal discomfort or aspiration pneumonia.

[0003] During gastric tube placement, checking its position is also crucial. The esophagus and trachea are very close relative to each other, so there's a potential risk of the tube accidentally entering the lungs during placement. Based on this, existing methods for determining the position of a gastric tube in the body include visual inspection, auscultation, aspiration of gastric contents, X-ray examination, and pH testing.

[0004] Visual inspection is when medical staff observe the patient's reaction (coughing, choking or vomiting) during the insertion of the gastric tube to judge whether the tube is correctly placed. If these symptoms occur, it may mean that the gastric tube is not properly placed in the stomach.

[0005] The auscultation method refers to the process of injecting a small amount of air through a gastric tube. The nurse will use a stethoscope placed in the patient's gastric area (upper abdomen) to obtain the sound of the patient's stomach to determine the position of the gastric tube. If a sound similar to "gurgling" is heard, this usually indicates that the end of the gastric tube is located in the stomach. For example: CN2681764Y discloses a wireless gastric tube insertion position indicator. This device can identify and judge whether the insertion position of the gastric tube is accurate when the gastric tube is inserted. The device consists of a gastric tube, a gastric tube plug, a wireless micro-audio generator, and a non-toxic plastic wire. The device combines the wireless micro-audio generator with the gastric tube. The wireless micro-audio generator enters the patient's gastric tract together with the gastric tube. The doctor can use a stethoscope to monitor the sound at any time to determine the position of the gastric tube.

[0006] Gastric aspiration is when a healthcare provider determines the position of a gastric tube by determining whether the tube can be aspirated and the stomach contents can be obtained. Gastric contents are characteristic evidence that can help confirm whether the tube is in the stomach.

[0007] X-ray examination is one of the most reliable positioning methods. After the gastric tube is placed, the medical staff will perform an X-ray imaging examination and judge whether the position of the gastric tube is correct based on the imaging position of the gastric tube. For example: CN201783057U relates to a gastric tube, which is generally inserted into the patient's body when used to monitor the function of the patient's digestive system. The gastric tube includes a gastric tube body and an X-tracking line, wherein the X-tracking line is located between the outer wall and the inner cavity wall of the gastric tube body. During the insertion of the gastric tube involved in this application into the patient's body, the X-tracking line will not directly contact the patient's internal organs, thereby ensuring the safety of the patient.

[0008] In the prior art, pH testing of fluid extracted from a gastric tube is a relatively common method. The pH value of gastric contents is usually acidic, therefore, testing the pH value of the liquid extracted from the gastric tube can help determine the position of the tube. If the pH value is low (usually less than 5.5), this indicates that the gastric tube is in the stomach. For example: CN219251030U discloses a pH value detection follow-up alarm gastric tube, which includes a gastric tube body, a gastric tube orifice, and a pH value detector. The gastric tube orifice is docked with the end of the gastric tube body, and a recessed area is provided on the side wall of the gastric tube body. A plurality of pH value detection heads are arranged in the recessed area, and wires are provided in series connection between the multiple pH value detection heads, and the ends of the wires are electrically connected to the pH value detector through the gastric tube orifice.

[0009] As a personal item for patients, gastric tubes are usually made of non-reusable materials. Therefore, the cost of positioning using the above-mentioned technical means is relatively high and the process is complicated, such as setting up various sensor devices on the gastric tube. Taking the pH value test as an example, a new test strip must be replaced each time it is used; at the same time, given that the gastric contents do not always come from the best position of the stomach, the sample extracted in this way can indicate that the gastric tube has entered the stomach, but it cannot accurately show the exact position of the end of the gastric tube in the stomach. In addition, if the patient's stomach is in an empty state or the gastric tube has not reached the position of gastric juice, the pH value test cannot be performed because gastric fluid cannot be extracted, and the purpose of determining the position of the gastric tube cannot be achieved.

[0010] In addition, on the one hand, due to differences in understanding among those skilled in the art; on the other hand, because the applicant studied a large number of documents and patents when making this utility model, but due to space limitations, not all details and contents are listed in detail. However, this does not mean that the utility model does not have the characteristics of these prior arts. On the contrary, the utility model already has all the characteristics of the prior art, and the applicant reserves the right to add relevant prior art to the background technology. Utility Model Content

[0011] The prior art has already developed a technical solution that achieves accurate tracking of the position of the catheter in the patient's body by setting a monitoring device on a specific part of the human body. For example, CN219783227U discloses a nasogastric tube based on magnetic positioning. After the completion of the placement of the tube, during the stage of indwelling the gastric tube, the neck band, the first abdominal band, and the second abdominal band are always worn on the human body to monitor whether the nasogastric tube is displaced during the indwelling stage of the nasogastric tube. The first monitoring element is set in the neck part, and the second monitoring element and the third monitoring element are set in the torso part. The first monitoring element, the second monitoring element, and the third monitoring element are arranged vertically on the monitoring suit. However, the monitoring device worn on the patient's body in this technical solution can only monitor whether the tube is displaced at a specific position, and cannot adjust the setting position of the monitoring device according to the individual differences of different patients, which leads to deviations in the actual detection results.

[0012] The present application provides a positioning assembly for a gastric tube capable of being traced and positioned. The assembly includes a gastric tube and a gastric tube position detection unit configured to be in close contact with the abdomen under the action of an external force. A gravity component is provided at the distal end of the gastric tube, which can be sensed by the gastric tube position detection unit. The gastric tube position detection unit includes a gastric tube distal end sensing assembly that can generate an alarm signal when the gastric tube approaches, a housing configured to accommodate the gastric tube distal end sensing assembly, and a body surface locator for determining the placement of the gastric tube distal end sensing assembly.

[0013] Compared with the above-mentioned prior art, the gravity component that can be sensed by the gastric tube position detection unit in the present invention is only set at the end of the gastric tube. Based on the above-mentioned distinguishing technical features, the technical problems to be solved by the present invention may include: how to ensure the accuracy of monitoring while reducing the number of sensor devices and the setting area. Specifically, the hollow inductor sensors used for position detection in the above-mentioned prior art are evenly arranged on the outer wall of the gastric tube segment. Therefore, all areas of the gastric tube segment need to be strictly restricted to the wearing path of different neck straps or abdominal straps to ensure the accuracy of the gastric tube monitoring position. However, the patient's body posture, position, etc. will change involuntarily during the tube placement process, which will lead to errors between different neck straps or abdominal straps. At this time, even if the tube is not shifted, it will cause an alarm to be generated, thereby significantly increasing the false alarm rate. The present invention sets the gravity component that can be sensed by the gastric tube position detection unit at the end, which can not only accurately indicate the insertion position information of the gastric tube, but also reduce the number of false alarms when the patient's body posture, position, etc. changes, thereby improving the accuracy of the warning signal.

[0014] According to a preferred embodiment, the gravity component is configured as a metal ball engaged with the distal opening. The distal sensing component of the gastric tube includes a metal detector.

[0015] According to a preferred embodiment, the gravity component is configured as a metal ring that is engaged with the inner wall of the gastric tube, and the gastric tube distal end sensing component includes a metal detector.

[0016] According to a preferred embodiment, the gravity component is configured as a magnetic ball. The gastric tube distal end sensing component includes a magnetic detector.

[0017] According to a preferred embodiment, the gravity component is configured as a radio frequency response tag, and the gastric tube distal end sensing component includes a radio frequency identification scanner.

[0018] According to a preferred embodiment, the proximal end of the gastric tube is provided with several interfaces for introducing liquid food, and the side wall of the distal end of the gastric tube is provided with several lateral injection holes for directing liquid food into the patient's stomach. According to a preferred embodiment, the gastric tube position detection unit includes an incorrect position warning component provided at a position corresponding to the patient's lungs on the chest surface, and a correct position warning component provided at a position corresponding to the patient's stomach on the abdominal surface, wherein the incorrect position warning component and the correct position warning component are provided with sound-emitting elements and / or light-emitting elements capable of emitting warning signals.

[0019] According to a preferred embodiment, the outer edge of the body surface positioner that can fit the patient's abdomen is provided with a grid slot that can allow several body surface positioners to be spliced ​​together.

[0020] According to a preferred embodiment, an outwardly protruding tenon and an inwardly recessed mortise are respectively provided on two opposite sides of the body surface locator, and a detachable connection is achieved between the two body surface locators through the engagement of the tenon and the mortise.

[0021] According to a preferred embodiment, the body surface locator includes a plurality of small units for placing the distal sensing assembly of the gastric tube, wherein the small unit located at the center of the body surface locator provides a reference position for the placement of the body surface locator in the form of being placed corresponding to the patient's navel.

[0022] According to a preferred embodiment, the surface of the shell accommodating the gastric tube distal sensing component is provided with an adhesive coating so that the gastric tube position detection unit can be adhered to a designated position on the patient's body surface under the control of external force.

[0023] Each gastric tube distal detector is wrapped in a shell. When the patient is a child, their body surface area is small. A gastric tube distal sensing component wrapped in a shell is placed on the corresponding position of the patient's abdomen (confirmed by medical staff) to quickly sense the gastric tube entering the stomach.

[0024] The surface locator involved in the present application can be used independently, or multiple ones can be set on the patient's body surface by connecting each other through the grid slide grooves provided on its outer surface. The surface locator can be placed directly on the patient's abdomen. The multiple small units provided by the surface locator, such as spaces, can accommodate a gastric tube distal sensing component wrapped by an outer shell. The surface locator can be used to expand the sensing range of the gastric tube distal sensing component. When the patient is heavy (for example, more than 200 pounds) or has a severe abdominal protrusion, the medical staff can expand the gastric tube distal sensing component through the surface locator, thereby increasing the sensing range of the gastric tube distal sensing component. Furthermore, for some inexperienced medical staff who cannot visually confirm the corresponding position of the stomach on the abdominal surface, they can confirm the patient's stomach position in a nine-square grid positioning manner through the surface locators connected to each other.

[0025] Beneficial effects of this technical solution:

[0026] This patent proposes a positioning assembly containing a traceable gastric tube for precise tracking of correct tube placement, ensuring the tube reaches its target location accurately each time and minimizing patient discomfort and potential complications. The positioning assembly, which includes a traceable gastric tube, is designed to combine ease of use with safety by including a disposable gastric tube and a reusable gastric tube position detection unit. The disposable design of the gastric tube prevents cross-infection, while the reusability of the detection unit takes into account cost-effectiveness and universal applicability.

[0027] Based on the experience accumulated in clinical nursing, the inventors have realized that the method of relying solely on the experience of medical staff or judging by extracting gastric contents has limitations in determining the precise position of the end of the gastric tube. This not only affects the risk of the gastric tube entering the lungs when it is first inserted, but also affects the subsequent feeding process. In particular, when the gastric tube is prone to displacement after the patient's body position changes, it is necessary to ensure that the end of the gastric tube is always in the predetermined position to reduce the risk of reflux. In addition, for postoperative patients or long-term hospitalized patients, their body shape may change significantly, which also requires the gastric tube positioning system to adapt to such changes and ensure the accuracy of each placement. Therefore, the gastric tube position detection unit involved in the positioning component of the gastric tube that can be traced needs to be adjusted according to the different body shapes and stomach and lung morphologies of the patient to ensure that the positioning of the end of the gastric tube is always accurate. Based on this, the present application proposes a positioning component that can be used in vitro and in vivo to enhance the safety of the operation and the comfort of the patient.

[0028] At the same time, since the gravity component set at the distal end of the traceable and positioned gastric tube has a certain weight, during the intubation process, the gravity component can provide gravitational potential energy toward the stomach for the gastric tube entering the human esophagus, thereby reducing the difficulty of intubation to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of the distal end of the gastric tube provided by the present invention;

[0030] Figure 2 A structural diagram of another embodiment of the distal end of the gastric tube provided by the present invention;

[0031] Figure 3 A structural diagram of the wrong position warning component and the correct position warning component provided by the utility model;

[0032] Figure 4 A diagram showing the usage status of the body surface locator provided by the present utility model;

[0033] Figure 5 This is a diagram of the usage status of the positioning component provided by the utility model, which includes a traceable positioning gastric tube.

[0034] Reference Signs List

[0035] 100: gastric tube; 110: lateral injection hole; 200: gravity assembly; 210: metal ball; 220: metal ring; 300: gastric tube position detection unit; 301: incorrect position warning assembly; 302: correct position warning assembly; 320: outer shell; 330: body surface locator; 3301: small unit; 3302: grid slide groove; 3303: mortise; 3304: tenon; 3304-1: tenon shoulder; 3304-2: tenon tongue. DETAILED DESCRIPTION

[0036] The following is a detailed description with reference to the accompanying drawings.

[0037] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "configured to", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. "Several" means two or more, unless otherwise clearly and specifically limited. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In the present application, the proximal end is, for example, the end close to the instrument operator. In the present application, the proximal end is, for example, the end away from the instrument operator.

[0038] The present application relates to a traceable positioning gastric tube, a positioning assembly, a positioning assembly including a traceable positioning gastric tube 100, and a gastric tube 100 that can be inserted into the patient's stomach through the esophagus under the action of an external force based on its own gravity. Figure 1 、 Figure 4 As shown, the positioning assembly includes a gastric tube 100 with a gravity assembly 200 disposed at the distal end thereof, and a gastric tube position detection unit 300 capable of sensing the distal end of the gastric tube 100 and issuing an alarm when the distal end of the gastric tube 100 is sensed. In the design of the gastric tube distal end sensing assembly of the present invention, the gastric tube position detection unit 300 can be disposed outside the patient's body corresponding to different sections of the esophagus and stomach, allowing the gastric tube position detection unit 300 to accurately locate the specific position of the gastric tube 100 within the esophagus and stomach. The esophagus is a muscular tube connecting the throat and stomach. It is about 25 cm long and is divided into three main parts. The cervical segment is from the bottom of the throat to the upper edge of the sternum, which is about 5 cm long; the thoracic segment is from the upper edge of the sternum to the diaphragm, which is about 18 cm long; the abdominal segment is from the diaphragm to the entrance of the stomach (cardia), which is about 2 cm long. The stomach is a sac-like organ located in the upper abdomen and is mainly divided into four parts. The part that serves as the entrance to the stomach and connects to the esophagus is called the cardia; the part located above the cardia, shaped like an inverted cone, is called the fundus; the main part of the stomach, which occupies most of the space in the stomach is called the body; and the part that serves as the exit of the stomach and connects to the duodenum is called the pylorus.

[0039] For example, when the gastric tube 100 passes through the throat and enters the cervical section of the esophagus, the position of the gravity component 200 can be located by the gastric tube position detection unit 300 that has been placed in the neck area in advance by medical staff; when the gastric tube 100 reaches the cardia, the position of the gravity component 200 can be located by the gastric tube position detection unit 300 that has been placed in the body surface area corresponding to the cardia in advance by medical staff. Through this precise positioning, medical staff can ensure that the gastric tube 100 is correctly placed in the patient's stomach to avoid accidental insertion into the trachea or other parts, thereby reducing the risk of complications. In addition, real-time monitoring and timely alarm functions can help medical staff respond quickly to any abnormal situation and ensure the safety of patients. Preferably, as Figure 3 As shown, the gastric tube position detection unit 300 includes a gastric tube distal end sensing component that can send out an alarm signal when the gastric tube 100 approaches, and a housing 320 that is configured to be sheathed on the surface of the gastric tube distal end sensing component. Figure 1 As shown, a gravity component 200 that can be sensed by a gastric tube position detection unit 300 is provided at the distal end of the gastric tube 100 .

[0040] Preferably, if Figure 1As shown, the gravity component 200 is configured as a metal ball 210, and the gastric tube distal sensing component includes a metal detector. The purpose of this design is to utilize the interaction between the metal ball 210 and the metal detector to monitor the position and status of the gastric tube. Through this configuration, medical personnel can accurately locate and track the position of the gastric tube to ensure that it is correctly placed in the patient's stomach. Preferably, the gravity component 200 can be a metal ball 210 made of silver, copper or other types of materials with high inductive capacity. In order to ensure precise positioning, the sensitivity of the metal detector is adjusted to a lower level to narrow its detection range. For example: the sensing range of the metal detector is not greater than 35cm. This adjustment helps to reduce false alarms and improve detection accuracy. By controlling the sensitivity, it is possible to avoid false detection of other metal objects, such as tableware or medical equipment, thereby focusing on detecting the metal ball 210 at the distal end of the gastric tube.

[0041] In this solution, the detection of the gravity component 200 at the distal end of the gastric tube 100 by the distal sensing component of the gastric tube is achieved based on the principle of electromagnetic induction. The metal detector configured by the distal sensing component of the gastric tube has one or more coils that can generate a magnetic field when powered. Since the gravity component 200 at the distal end of the gastric tube 100 is set as a metal ball 210, when the metal ball 210 enters the magnetic field range of the metal detector, it will change the magnetic field generated by the coil. This change will cause a change in the current in the coil. The amplifier inside the metal detector can amplify this tiny current change. The amplified signal will be sent to the processor of the metal detector for analysis. The logic circuit in the processor will make a judgment based on the strength and characteristics of the signal that a metal object is approaching. Once the processor detects metal and makes a judgment, it will activate an output device, such as a buzzer, LED light or other type of indicator, to notify medical staff that a metal object is approaching.

[0042] Preferably, the metal detector can be the XP MI-6 Pinpointer, which has a 50-meter waterproof function and a battery life of up to 90 hours. Its wireless connection function allows it to synchronize and analyze data with other devices (such as smartphones or tablets). The high waterproofness and long battery life of the XP MI-6 make it reliable during long operations or examinations, and can transmit data in real time for monitoring. Preferably, the metal detector can also be selected from the Fisher F-Pulse Pinpointer, which uses pulse sensing technology and also has high sensitivity and multi-function alarm functions. After detecting a metal object, it can notify the user through a synchronized alarm of sound, light and vibration.

[0043] Preferably, if Figure 1As shown, the gravity component 200 is configured as a magnetic ball. The distal sensing component of the gastric tube includes a magnetic detector. Preferably, the sensitivity of the magnetic detector is adjusted to a low level so that the sensing range of the magnetic detector is no greater than 35 cm.

[0044] In this solution, the gastric tube distal sensing assembly detects the gravity assembly 200 at the distal end of the gastric tube 100 based on the Hall effect principle. The magnetic detector configured in the gastric tube distal sensing assembly can be a Hall effect sensor, a magnetoresistive sensor, a fluxgate sensor, or the like. These magnetic detectors can convert changes in the magnetic field into electrical signals. Because the gravity assembly 200 at the distal end of the gastric tube 100 is a magnetic sphere, it generates a persistent and stable magnetic field. Therefore, when the gravity assembly 200 enters the magnetic field range of the magnetic detector, it affects the magnetic field surrounding the magnetic detector. This change is amplified, processed, and extracted by the magnetic detector, generating a digital signal that is sent to the magnetic detector's processor for analysis. The logic circuitry in the processor determines the approach of a magnetic object based on the signal's strength and characteristics. Once the processor detects the magnetic field change and makes a determination, it activates an output device, such as a buzzer, LED light, or other type of indicator, to notify the user of the approaching magnetic object. Preferably, the magnetic detector can use the MLX90 series Hall effect / magnetic sensor of Melexis, and can also be customized by electronic test tool manufacturers such as Fluke.

[0045] Preferably, the distal sensing assembly of the gastric tube includes a radio frequency identification (RFID) scanner. Preferably, the RFID scanner can be an S70-UHF RFID handheld terminal or other RFID UHF mobile terminal capable of sensing RFID response tags within a range of 0.1 to 1 meter. Preferably, the RFID scanner has a sensing range of 0.1 to 0.3 meters for RFID response tags.

[0046] Preferably, the gravity assembly 200 is configured as a radio frequency response tag, which includes a passive RFID tag, an integrated circuit (IC), and an antenna. Specifically, when the gastric tube distal detection assembly emits a radio frequency signal, the passive RFID tag in the gravity assembly 200 picks up the signal, activating it and using the energy to power its integrated circuit. The integrated circuit then transmits the stored information (such as an identification code) to the antenna, which then transmits this information at a specific frequency. After receiving these signals, the gastric tube distal detection assembly can identify the specific location of the distal end of the gastric tube 100. For example, the radio frequency receiver embedded in the gastric tube distal detection assembly can confirm whether the gastric tube 100 has reached the predetermined position in the stomach. First, medical staff may use an external radio frequency transmitter to set the initial position of the gastric tube 100. When the gastric tube distal detection assembly emits a radio frequency signal, activating the RFID tag in the gravity assembly 200, the tag responds to the signal and emits a specific identification signal. Once the gastric tube 100 reaches the designated location in the stomach, the detector receives the signal, confirming the correct position and further notifying the medical staff of the completion of placement through visual or auditory signals. This RF signal-based detection method greatly reduces the risk of incorrect placement of the gastric tube, ensuring the safety and effectiveness of feeding and intubation. More preferably, the RF response tag can be an ultra-small RFID tag that is heat-resistant, acid-resistant, alkali-resistant, and metal-resistant, or other flexible, corrosion-resistant RFID electronic tag.

[0047] Preferably, if Figure 3 As shown, the gastric tube position detection unit 300 includes an incorrect position warning component 301 and a correct position warning component 302, wherein the incorrect position warning component 301 and the correct position warning component 302 are provided with indicators such as sound-emitting elements and / or light-emitting elements, and the two differ only in the warning method of the indicators. For example, when the incorrect position warning component 301 detects a gastric tube entering the range, its indicator is triggered by emitting a siren sound and / or flashing a red light; when the correct position warning component 302 detects a gastric tube entering the range, its indicator is triggered by emitting a voice message of "entering the designated position" and / or flashing a green light.

[0048] Preferably, the surface of the housing 320 accommodating the gastric tube distal sensing component is provided with an adhesive coating so that the gastric tube position detection unit 300 can be adhered to a designated position on the patient's body surface under the control of an external force.

[0049] Specifically, medical staff can confirm the location of the lungs and stomach based on their own experience or other methods (such as drawing a nine-square grid on the patient's body surface), such as Figure 5As shown, the incorrect position warning component 301 and the correct position warning component 302 are placed at the corresponding positions on the body surface of the lung and stomach, respectively. The housing 320 of the incorrect position warning component 301 and the housing 320 of the correct position warning component 302 are both provided with an adhesive coating (e.g., medical glue), which can fix the incorrect position warning component 301 and the correct position warning component 302 relative to the patient's body surface.

[0050] Furthermore, the distal end of the gastric tube 100 enters the patient's oral cavity. The medical staff adjusts the angle of entry of the gastric tube 100. When the wrong position warning component 301 issues an alarm, the medical staff can withdraw the gastric tube 100 in time and try to insert the tube again.

[0051] When the correct position warning component 302 sounds an alarm, it indicates that the distal end of the gastric tube 100 has reached the designated position of the stomach. Medical staff can use conventional means in the prior art to fix the proximal end of the gastric tube 100 and withdraw the surface locator 330 and the gastric tube position detection unit 300 placed on the patient's body surface. When liquid food needs to be fed again, it is only necessary to place the gastric tube position detection unit 300 according to the aforementioned method. When the correct position warning component 302 sounds an alarm, it indicates that the gastric tube 100 has not been displaced and feeding can be done. When the correct position warning component 302 does not sound an alarm, it indicates that the gastric tube 100 has been displaced, and the medical staff can control the proximal end of the gastric tube 100 to make the correct position warning component 302 sound an alarm.

[0052] Preferably, the gastric tube position detection unit 300 also includes a surface locator 330 for placing one or more gastric tube distal sensing components, wherein the outer edge of the surface locator 330 that can fit the patient's abdomen is provided with a grid slide 3302 that can enable several surface locators 330 to be spliced ​​together. Preferably, the grid slide 3302 is configured as a C-shaped slot or a mortise and tenon structure. When several surface locators 330 need to be spliced ​​together, the two sides of the surface locator 330 slide in parallel to complete the splicing. Preferably, as Figure 4 As shown, a tenon 3304 and a mortise 3303 are provided on opposite sides of the body surface locator 330. Specifically, the tenon 3304 is a protruding portion, and the mortise 3303 is a recessed portion. The tenon 3304 and the mortise 3303 engage with each other to form a connection. The tenon 3304 includes a tongue 3304-2 extending into the mortise 3303 and a shoulder 3304-1 supporting the tongue 3304-2. Figure 4As shown, the tongue 3304-2 is configured as a rectangular block, and the shoulder 3304-1 is configured as a square block. Part of the tongue 3304-2 is connected to the shoulder 3304-1. The outer wall surrounding the mortise 3303 extends to partially obscure the recessed portion of the mortise 3303. The opening exposed by the unobstructed recessed portion allows the tongue 3304-2 to enter. When the tongue 3304-2 is inserted into the mortise 3303, the extension of the outer wall partially obscuring the recessed portion of the mortise 3303 ensures that the tongue 3304-2 is securely positioned within the mortise 3303.

[0053] When performing the gastric tube 100 insertion operation, the medical staff may first combine multiple body surface locators 330, such as Figure 4 As shown, they are assembled into corresponding shapes. One of the body surface locators 330 is placed on the patient's navel as the main positioning reference. Then, the wrong position warning component 301 and the correct position warning component 302 are respectively placed on the corresponding body surface locator 330.

[0054] Preferably, if Figure 4 As shown, to achieve precise positioning, a surface locator 330 can be designed to simulate a nine-square grid pattern, with nine evenly distributed small units 3301. Each small unit 3301 is formed by an inner edge of a soft material surface to ensure that the distal sensing component of the gastric tube can be tightly embedded therein. This design allows the incorrect position warning component 301 and the correct position warning component 302 to be firmly placed in each small unit 3301 of the surface locator 330.

[0055] The distal end of the gastric tube 100 is introduced into the patient's mouth. When the gastric tube 100 enters the position corresponding to the wrong position warning component 301 (for example, the lungs), the wrong position warning component 301 issues an alarm (for example, a harsh alarm sound), which prompts the medical staff to withdraw the gastric tube 100 and retry the insertion operation. On the contrary, when the correct position warning component 302 gives feedback (for example, a voice prompt of "insertion correct"), this indicates that the distal end of the gastric tube 100 has reached the target position in the stomach. At this time, the medical staff can remove the surface locator 330 and the gastric tube position detection unit attached to the patient's body surface.

[0056] For any subsequent feeding procedures, simply reposition the gastric tube position detection unit and body surface locator 330 according to the above steps. If the correct position warning component 302 activates, this indicates that the gastric tube 100 is stable and feeding can be performed. If the correct position warning component 302 does not receive a warning signal, it means that the gastric tube 100 has shifted. In this case, medical personnel need to guide the proximal end of the gastric tube 100 back to the correct position by adjusting it until the correct position warning component 302 issues a signal.

[0057] Preferably, the proximal end of the gastric tube 100 is provided with a plurality of interfaces, and the side wall of the distal end of the gastric tube 100 is provided with a plurality of lateral injection holes 110. Preferably, the lateral injection holes 110 are evenly distributed within a 10 cm range extending from the distal end to the proximal end of the gastric tube 100. Medical personnel can inject liquid food into the gastric tube 100 through the interfaces outside the patient's body. The lateral injection holes 110 can guide the liquid food in the gastric tube 100 into the patient's stomach.

[0058] Preferably, if Figure 2 As shown, the gravity assembly 200 is configured as a metal ring 220. The metal ring 220 engages with the inner wall of the distal end of the gastric tube 100. The distal end of the gastric tube 100 is prevented from collapsing due to the metal ring 220. Furthermore, the metal ring 220 can be detected by the gastric tube position detection unit based on its metallic properties. Because the metal ring 220 has detectable properties, when the metal ring 220 is provided at the distal end of the gastric tube 100 and the gastric tube distal end sensing assembly is a metal detector, the metal ball is no longer provided at the distal end of the gastric tube 100.

[0059] It should be noted that the above-mentioned specific embodiments are exemplary, and those skilled in the art can come up with various solutions inspired by the disclosure of this utility model, and these solutions also belong to the disclosure scope of this utility model and fall within the protection scope of this utility model. Those skilled in the art should understand that the specification of this utility model and its drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this utility model is defined by the claims and their equivalents. This utility model specification contains multiple inventive concepts, such as "preferably" and "according to a preferred embodiment", which means that the corresponding paragraph discloses an independent concept, and the applicant reserves the right to file a divisional application based on each inventive concept. Throughout the text, the features guided by "preferably" are only an optional method and should not be understood as having to be set, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A positioning assembly comprising a traceable positioning gastric tube, comprising a gastric tube (100) and a gastric tube position detection unit (300) configured to be closely attached to the abdomen under the action of an external force, characterized in that: The distal end of the gastric tube (100) is provided with a gravity component (200) that can be sensed by the gastric tube position detection unit (300). The gastric tube position detection unit (300) comprises a gastric tube distal end sensing component capable of issuing an alarm signal when the gastric tube (100) approaches, a housing (320) configured to accommodate the gastric tube distal end sensing component, and a body surface locator (330) for determining the placement position of the gastric tube distal end sensing component.

2. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The gravity component (200) is configured as a metal ball (210) engaged with the distal opening, and the gastric tube distal sensing component includes a metal detector.

3. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The gravity component (200) is configured as a metal ring (220) that is engaged with the inner wall of the gastric tube (100), and the gastric tube distal end sensing component includes a metal detector.

4. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The gravity component (200) is configured as a magnetic ball, and the gastric tube distal end sensing component includes a magnetic detector.

5. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The gravity component (200) is configured as a radio frequency response tag, and the gastric tube distal sensing component includes a radio frequency identification scanner.

6. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The proximal end of the lumen of the gastric tube (100) is provided with a plurality of interfaces for introducing liquid food, and the side wall of the distal end of the lumen of the gastric tube (100) is provided with a plurality of lateral injection holes (110) for guiding the liquid food into the patient's stomach.

7. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The gastric tube position detection unit (300) comprises an incorrect position warning component (301) arranged at a position of the patient's lung corresponding to the position on the chest surface, and a correct position warning component (302) arranged at a position of the patient's stomach corresponding to the position on the abdominal surface, wherein the incorrect position warning component (301) and the correct position warning component (302) are provided with a sound element and / or a light element capable of emitting a warning signal.

8. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The outer edge of the body surface locator (330) that can fit the patient's abdomen is provided with a grid slot (3302) that can enable several body surface locators (330) to be spliced ​​together.

9. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: An outwardly protruding tenon (3304) and an inwardly recessed mortise (3303) are respectively provided on opposite sides of the body surface locator (330), and a detachable connection is achieved between the two body surface locators (330) through the engagement of the tenon (3304) and the mortise (3303).

10. The positioning assembly comprising a traceable positioning gastric tube according to claim 1, characterized in that: The surface locator (330) includes a plurality of small units (3301) for placing the distal sensing component of the gastric tube, wherein the small unit (3301) located at the center of the surface locator (330) provides a reference position for the placement of the surface locator (330) in the form of being placed corresponding to the patient's navel.

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