Stomach tube and stomach tube positioning and tracing device

Abstract

The utility model relates to a stomach tube and a stomach tube positioning and tracing device. The stomach tube and stomach tube positioning and tracing device comprises a stomach tube and a body surface warning assembly. The body representation alarm assembly attached to the chest and the abdomen under the action of external force is provided with a stomach tube far-end detector and a shell for containing the stomach tube far-end detector. A guide wire capable of synchronously displacing with a tube body of the stomach tube is arranged in a tube cavity of the stomach tube in a sleeving manner, and a first functional region section capable of being detected by the body expression alarm assembly is arranged at the far end of the guide wire. The stomach tube body and the body surface alarm assembly work cooperatively to provide effective tracking and positioning information. Particularly, medical staff can assess the stomach form and the lung form of the patient according to different body forms of the patient and place the body form warning assembly at a specified position on the body surface of the patient, and it is guaranteed that the far end of the stomach tube is accurately positioned every time and is not hurt.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a gastric tube and a gastric tube positioning and tracing device. Background Art

[0002] Gastric tube positioning is a nursing procedure used to confirm that the gastric tube is correctly placed in the patient's stomach. This nursing procedure is crucial to ensuring the safe use of the gastric tube, because incorrect gastric tube positioning may lead to serious complications, such as aspiration pneumonia (gastric contents are accidentally inhaled into the lungs). At the same time, before each nasogastric tube feeding, medical staff need to use self-observation or the help of relevant instruments to determine whether the distal end of the gastric tube is in the correct position in the stomach. The position of the distal end of the gastric tube in the patient's body has a very important impact on the patient's eating. For frail or bedridden patients, if the distal end of the gastric tube does not reach the cardia but is in the esophagus, during feeding, food is very likely to reflux or cause aspiration due to reflux; or, if the distal end of the gastric tube is close to the cardia in the stomach, even when not eating, the gastric tube close to the cardia will have gastric juice drainage, causing esophageal burning or even aspiration.

[0003] During intubation, checking the placement of the gastric tube is also crucial. Because the esophagus and trachea are close to each other, there is a risk that the gastric tube may enter the lungs when it is inserted.

[0004] Based on this, the prior art proposes the following methods for determining the position of a gastric tube in a human body.

[0005] 1. Visual inspection method

[0006] During the tube insertion process, the healthcare provider will monitor the patient for any reactions, such as coughing, choking, or gagging. If these symptoms occur, it may mean that the tube is not properly placed in the stomach.

[0007] 2. Auscultation

[0008] The doctor will use a stethoscope placed on the patient's stomach area (upper abdomen) while inserting a small amount of air through the tube. If a "gurgling" sound is heard, this usually indicates that the end of the tube is in the stomach.

[0009] 3. Aspirate gastric contents

[0010] Aspiration of the gastric tube allows for the acquisition of gastric contents, which is often characteristic evidence of intestinal contents and can help confirm that the tube is in the stomach.

[0011] 4. X-ray inspection

[0012] X-ray examination is the gold standard for determining whether a gastric tube is in the stomach. After the gastric tube is placed, medical staff will perform an X-ray imaging examination to confirm the placement of the gastric tube. This method is the most reliable method for positioning the gastric tube.

[0013] CN203971151U relates to a multi-hole gastric tube with scales, X-ray development lines, a double-turn reducer cap, and a guidewire. The multi-hole gastric tube consists of a tube body, a guidewire, and a connector. The tube body contains three parallel internal lumens: a main lumen, an auxiliary lumen, and a nutrient lumen. The three lumens are interconnected at the blind end of the tube body. The main lumen serves as a decompression and drainage lumen, while the auxiliary lumen and nutrient lumen serve as a nutrient delivery lumen and a regulation lumen, respectively. The functions of the two lumens are interchangeable.

[0014] 5. pH test

[0015] The pH of stomach contents is usually acidic, so testing the pH of fluid drawn from a gastric tube can help determine where the tube is. If the pH is low (usually less than 5.5), this may indicate that the tube is in the stomach.

[0016] CN214074293U discloses a gastric tube capable of accurate positioning, comprising: a gastric tube body, a guide wire inserted into the cavity of the gastric tube body, the guide wire extending along the length direction of the gastric tube body to the front end opening of the gastric tube body; a capillary pipette is arranged in the cavity of the guide wire along its extension direction, the inner cavity of the capillary pipette is provided with a test line twisted from pH test paper, a foam water absorbent ball is arranged at the opening of the capillary pipette near the guide wire, and the foam water absorbent ball is connected to and in contact with the test line.

[0017] Because gastric tubes are personal medical devices, often made of disposable materials, the positioning costs of these devices are high and their operation is complex. Using pH test strips as a verification method requires replacing the test strips with each use. Furthermore, because gastric contents are not always in the ideal position within the patient's stomach, the extracted gastric contents only indicate to medical staff that the tube has entered the stomach, but cannot confirm the specific position of the distal end of the tube within the patient's stomach. Furthermore, if the patient's stomach is empty or the tip of the gastric tube has not reached the gastric fluid reservoir, gastric fluid cannot be aspirated, making it difficult to achieve the testing and positioning objectives.

[0018] 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

[0019] In order to improve the accuracy of determining the position of the patient's internal tube, the prior art has developed a technical solution for monitoring the specific position of the internal tube based on the principle of magnetic positioning. For example, CN219783227U discloses a nasointestinal tube based on magnetic positioning, comprising: a nasointestinal tube for insertion into the human body, the nasointestinal tube having a front end and a rear end, the front end being an open end and the rear end being a closed end, and a channel being set from the front end as a starting point, and the channel not passing through the rear end, wherein a plurality of openings are set between the front end and the rear end, and the openings are connected to the channel; a coating layer for partially or completely wrapping the outer wall of the nasointestinal tube, wherein the coating layer does not block the openings; a monitored element set between the outer wall of the nasointestinal tube and the inner wall of the coating layer, wherein the monitored element is set to at least one and the monitored element does not overlap with the opening. This technical solution monitors the position of the nasointestinal tube terminal by setting a monitored element on the outer wall of the nasointestinal tube and setting a monitoring device that can be worn outside the patient's body, facilitating timely adjustment when the tube placement direction deviates, thereby improving the success rate of blind nasointestinal tube placement. However, this technical solution requires the use of a neck strap, a first abdominal strap, and a second abdominal strap placed at different locations on the human body to detect displacement of the nasointestinal tube during placement. Furthermore, different monitoring elements must be placed along the path of the nasointestinal tube. This significantly increases the number of sensor devices required and the number of steps required during monitoring, increasing the workload for medical staff and reducing the efficiency of tube placement monitoring. Furthermore, deviations in the wearing position of the monitoring elements at different locations can reduce the accuracy of actual monitoring.

[0020] The present application provides a gastric tube and a gastric tube positioning and tracing device. The gastric tube and the gastric tube positioning and tracing device include a gastric tube and a body alarm component. A guide wire that can be displaced synchronously with the body of the gastric tube is sleeved in the lumen of the gastric tube, wherein the distal end of the guide wire is provided with a first functional section that can be detected by the body alarm component. Preferably, the first functional section in the guide wire can be provided with a coating. Preferably, the material of the first functional section can be different from that of the other parts of the guide wire. Preferably, the guide wire is sleeved with an induction ring in the first functional section that can be sensed by the detector at the distal end of the gastric tube.

[0021] The gastric tube distal probes described in this application can be used independently or multiple probes can be simultaneously positioned on a patient's body surface by securing the position of an outer frame. The outer shell houses the gastric tube distal probes and can be provided with an adhesion area on the surface. When a gastric tube distal probe is used independently, the outer shell adheres to the patient's skin, securing the position of the independent gastric tube distal probe relative to the patient. Each gastric tube distal probe is encased in the outer shell.

[0022] The outer frame is a hollow shell that accommodates the probe at the distal end of the gastric tube. It is placed directly on the patient's abdomen. One of its important functions is to locate the stomach.

[0023] Compared with the above-mentioned prior art, the first functional section for being detected by the body alarm component in the present invention is set on a guide wire that can be displaced synchronously with the tube body 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 monitor the insertion angle and position of the gastric tube during the tube placement process, while reducing the burden on the patient to wear an external monitoring device. Specifically, the present invention only needs to place a body alarm component during the tube placement process to monitor the position of the guide wire set in the gastric tube, and there is no need to monitor the tube placement path through the complicated wearing process of the neck band or abdominal band structure.

[0024] According to a preferred embodiment, the body alarm component that fits against the abdomen under the action of external force is provided with a gastric tube distal detector and a shell for accommodating the gastric tube distal detector, and the body alarm component includes an abnormal position alarm component and a target position alarm component, wherein the abnormal position alarm component and the target position alarm component are provided with different warning signals. Specifically, the alarm modes of the abnormal position alarm component and the target position alarm component are set to different modes. For example, when triggered, the abnormal position alarm component emits an alarm sound, and the target position alarm component emits a voice of "entering the target area". Alternatively, when triggered, the abnormal position alarm component emits a flashing red light, and the target position alarm component flashes a green light.

[0025] According to a preferred embodiment, the distal end detector of the gastric tube comprises a metal detector, and the first functional section of the guide wire is coated with a metal coating.

[0026] According to a preferred embodiment, the distal end detector of the gastric tube includes a magnetic detector, and the first functional section of the guide wire is coated with a magnetic coating.

[0027] According to a preferred embodiment, the gastric tube distal end detector includes a radio frequency tag detector, and the induction loop that can be sensed by the gastric tube distal end detector is a radio frequency tag reflector.

[0028] According to a preferred embodiment, the distal end of the guidewire is provided with a second functional section made of flexible material for providing a buffering effect when the guidewire is subjected to excessive thrust, wherein the second functional section is provided on the side of the first functional section facing the proximal end.

[0029] According to a preferred embodiment, the gastric tube assembly is detachably connected to a guide wire channel, and the guide wire is partially placed in the guide wire channel to ensure synchronous position change with the gastric tube assembly.

[0030] According to a preferred embodiment, the surface of the housing housing the gastric tube distal probe is provided with an adhesive coating, so that the body surface warning assembly can be attached to a designated location on the patient's body surface under external force control. The designated location includes the location of the patient's stomach on the abdominal surface determined by medical personnel based on their own experience.

[0031] According to a preferred embodiment, the proximal end of the lumen of the gastric tube is provided with several interfaces for introducing liquid food, and the side wall of the distal end of the lumen of the gastric tube is provided with several lateral injection holes for guiding the liquid food into the patient's stomach.

[0032] The utility model also relates to a gastric tube, wherein a guide wire capable of synchronously displacing with the tube body of the gastric tube is provided in the lumen of the gastric tube, wherein a first functional section is provided at the distal end of the guide wire, wherein a coating or an induction ring capable of being sensed by a body alarm component is provided in the first functional section.

[0033] Beneficial effects of this technical solution:

[0034] The gastric tube and gastric tube positioning and tracing device involved in this application are intended to provide accurate positioning and tracking for the gastric tube insertion process, ensuring that the gastric tube reaches the predetermined position correctly, while reducing discomfort and possible complications to the patient.

[0035] Considering that the gastric tube is a disposable consumable, if its positioning device uses a disposable product, it will increase the patient's usage burden and be difficult to promote. The gastric tube and gastric tube positioning and tracing device of this application include two parts. Some of the materials, such as the gastric tube, use disposable materials to avoid cross-infection between patients, while the other part of the materials, such as the body alarm component, is set as reusable equipment.

[0036] In the present application, the inventors found, based on their own nursing experience, that it is not only necessary to position the gastric tube when inserting it for the first time (to avoid the risk of the gastric tube being inserted into the lungs), but also necessary to confirm that the distal end of the gastric tube is in the designated position during each subsequent gavage of liquid food (the risk of the gastric tube being dislodged from deep in the stomach increases after changes in the posture of some patients). Relying on the experience of medical staff or the extraction of gastric contents in the existing technology cannot help medical staff confirm the specific position of the distal end of the gastric tube in the stomach, which also increases the risk of liquid food reflux.

[0037] Based on this, the inventors proposed a gastric tube and a gastric tube positioning and tracing device comprising a gastric tube body and a body warning component. The gastric tube body and the body warning component work together to provide effective tracking and positioning information. In particular, medical staff can assess the patient's stomach and lung morphology based on the patient's different body shapes, and place the body warning component at a designated location on the patient's body surface to ensure that the distal end of the gastric tube is accurately and harmlessly positioned each time. At the same time, for postoperative patients or other patients hospitalized for a long time, drastic changes in their body shape will not affect the positioning of the gastric tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A structural diagram showing the relative positions of the gastric tube and the guide wire of the device provided by the present invention;

[0039] Figure 2 This is a structural diagram of the body alarm component provided by the utility model;

[0040] Figure 3 This is a diagram of the usage status of the device provided by the utility model.

[0041] Reference Signs List

[0042] 100: Gastric tube assembly; 200: Guide wire; 210: First functional section; 220: Second functional section; 230: Guide wire channel; 300: Body alarm assembly; 301: Abnormal position alarm assembly; 302: Target position alarm assembly; 310: Gastric tube distal end detector; 320: Housing; 330: Outer frame. DETAILED DESCRIPTION

[0043] The following is a detailed description with reference to the accompanying drawings.

[0044] 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 internal communication between two elements. "Several" means two or more, unless otherwise clearly and specifically limited. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0045] In this application, the proximal end refers to the end of the instrument closer to the operator, and the distal end refers to the end of the instrument farther from the operator.

[0046] The present application provides a gastric tube positioning and tracing device and a gastric tube as a gastric tube component of the gastric tube positioning and tracing device.

[0047] Preferably, if Figure 1 As shown, the gastric tube positioning and tracing device includes a gastric tube assembly 100. The gastric tube assembly 100 has a hollow tubular structure, and a guide wire 200 is provided inside the lumen of the gastric tube assembly 100. The distal end of the guide wire 200 passes through the distal end of the gastric tube assembly 100, and the guide wire 200 as a whole can move synchronously with the tube body of the gastric tube assembly 100.

[0048] Preferably, if Figure 2 As shown, the gastric tube positioning and tracing device includes a body alarm component 300 that can sense the distal position of the gastric tube assembly 100. The body alarm component 300 includes a shell 320 and a gastric tube distal detector 310 that can be detachably placed in the internal cavity of the shell 320. The shell 320 presents a box-like structure with an open top, and the bottom of the box structure can be coated with medical glue so that the body alarm component 300 can be attached to a predetermined position on the patient's abdomen under the action of external force. In the design of the gastric tube positioning and tracing device of the present invention, the gastric tube distal detector 310 can be set outside the patient's body corresponding to different sections of the esophagus and stomach, which allows the gastric tube distal detector 310 to accurately locate the specific position of the gastric tube assembly 100 in 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.

[0049] For example, when the gastric tube assembly 100 passes through the throat and enters the thoracic esophagus, the position of the gastric tube assembly 100 can be located by the gastric tube distal detector 310 that has been pre-placed in the body surface area corresponding to the thoracic segment; when the gastric tube assembly 100 reaches the cardia, the position of the gastric tube assembly 100 can be located by the gastric tube distal detector 310 that has been pre-placed by medical staff in the body surface area corresponding to the cardia. Through this precise positioning, medical staff can ensure that the gastric tube is correctly placed in the patient's stomach, avoid accidental insertion into the trachea or other parts, and thus reduce 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 patient safety.

[0050] Preferably, if Figure 1 As shown, the distal end of the guidewire 200 is provided with a first functional section 210 that can be detected by the body alarm assembly 300. The first functional section 210 can be a coating provided on the distal end of the guidewire 200, or it can be an induction ring sleeved on the distal end of the guidewire 200. Both configurations ensure that the remaining portion of the guidewire 200, except for the distal first functional section 210, will not generate induction with the body alarm assembly 300.

[0051] Preferably, if Figure 2As shown, the body surface warning component 300 includes an abnormal position warning component 301 and a target position warning component 302, wherein the abnormal position warning component 301 and the target position warning component 302 can be placed at different positions on the patient's body surface, and the two have different warning information. Figure 2 As shown, in order to distinguish the abnormal position warning component 301 from the target position warning component 302, the distal end detectors 310 of the gastric tube of the two are different in appearance. For example, the distal end detector 310 of the gastric tube of the abnormal position warning component 301 is configured as a cylindrical structure, while the target position warning component 302 is configured as a rectangular structure.

[0052] Preferably, the distal end detector 310 of the gastric tube can include a metal detector, and the distal end of the guidewire 200 is coated with a metal coating or fitted with a metal ring to form the first functional section 210. Preferably, the metal coating and metal ring can be made of iron or other materials with high inductive properties. The metal detector can be a low-sensitivity detector with a sensing range of no more than 20 cm to limit its detection range. In this embodiment, the distal end detector 310 of the gastric tube detects the first functional section 210 of the distal end of the guidewire 200 based on the principle of electromagnetic induction. The metal detector configured in the distal end detector 310 has one or more coils that generate a magnetic field when energized. When the guidewire 200, with its distal end coated with metal or fitted with a metal ring, enters the magnetic field of the metal detector, it alters the magnetic field generated by the coils. This change causes a change in the current in the coils. The amplifier within the metal detector amplifies this tiny current change, and the amplified signal is fed into the metal detector's processor for analysis. The logic circuit in the processor determines the proximity of a metal object based on the signal's strength and characteristics. Once the processor detects metal and makes a determination, it activates an output device such as a buzzer, LED light, or other type of indicator to notify personnel that a metal object is approaching.

[0053] Preferably, the metal detector can be the ST-30C handheld needle detector, which features sensitivity adjustment and audio and visual alarms. This device can be used to inspect injured areas of humans, livestock, and other animals to determine whether any iron filings or debris have penetrated the body. The first functional section 210 can be formed using an iron coating or a sleeved iron ring to accommodate the ST-30C handheld needle detector. Preferably, the metal detector can also be the Garrett Pro-Pointer AT metal detector, which has a detection range of 6 cm or greater and can similarly notify the user of metal objects through synchronized audio, visual, and vibration alarms.

[0054] Preferably, the gastric tube distal end detector 310 may include a magnetic detector, and the distal end of the guidewire 200 may be coated with a magnetic coating or sleeved with a magnetic ring to form a first functional section 210. Preferably, the magnetic coating may be made of magnetic powder, and the magnetic ring may be a permanent magnet. Preferably, the sensitivity of the magnetic detector is reduced or the thickness of the magnetic coating is reduced to limit the sensing range of the magnetic detector to within 20 cm. In this solution, the gastric tube distal end detector 310 can detect the first functional section 210 at the distal end of the guidewire 200 based on the Hall effect principle. The magnetic detector configured for the gastric tube distal end detector 310 may be a Hall effect sensor, a magnetoresistive sensor, a fluxgate sensor, etc. These magnetic detectors can convert changes in the magnetic field into electrical signals. The distal end of the guidewire 200 is coated with a magnetic coating or sleeved with a magnetic ring, and these magnetic materials can generate a persistent and stable magnetic field. When the guidewire 200, whose distal end is coated with a magnetic coating or a magnetic ring, enters the magnetic field range of the magnetic detector, it affects the magnetic field around the magnetic detector. This change is amplified, processed, and extracted by the magnetic detector, forming a digital signal that is sent to the magnetic detector's processor for analysis. The logic circuit in the processor determines that a magnetic object is approaching based on the strength and characteristics of the signal. Once the processor detects a change in the magnetic field and makes a judgment, it activates an output device, such as a buzzer, LED light, or other type of indicator, to notify personnel that a magnetic object is approaching. Preferably, the magnetic detector can use the MLX90 series Hall effect / magnetic sensor from Melexis, and can also be customized by electronic test tool manufacturers such as Fluke.

[0055] Preferably, the distal end probe 310 of the gastric tube can include a radio frequency tag detector, and the distal end of the guidewire 200 can be provided with a radio frequency tag reflector to form the first functional section 210. Preferably, the radio frequency tag detector can be a BG1011 radio frequency tag reader. The radio frequency tag reflector can be a 1mm thin, metal-resistant flexible RFID (Radio Frequency Identification) tag. This flexible RFID tag can be used on metal and has a read range of approximately 3 meters. It is waterproof, anti-fouling, and corrosion-resistant. Preferably, the radio frequency tag reflector can also be a UHF ultra-micro RFID tag with a thickness of 0.8mm and a length and width of 2.6mm to accommodate the dimensions of the guidewire 200. The RFID tag contains an antenna and a chip. The antenna receives the radio frequency energy emitted by the radio frequency tag detector and converts it into electrical energy for the chip. The chip contains a microprocessor and memory, which stores information that can be recognized by the radio frequency tag detector. When the radio frequency tag detector emits radio waves of a specific frequency, these waves propagate through space, forming an electromagnetic field. When an RFID tag enters this electromagnetic field, the antenna on the tag receives these radio waves and extracts energy from them, activating the chip. Once activated, the chip sends a signal through the antenna to the RFID tag detector. This signal contains the information stored in the chip. After receiving the signal, the RFID tag detector decodes the data in the signal, which usually includes a unique identifier that identifies the tag. Once the RFID tag detector recognizes the RFID tag, it activates an output device such as a buzzer, LED light, or other type of indicator to notify personnel that an RFID tag is approaching.

[0056] It should be noted that the methods and electronic equipment used by the above-mentioned gastric tube distal detector 310 to determine the position of the first functional section 210 at the distal end of the guide wire 200 have been maturely used in the existing technology. The above content can be directly implemented with the help of existing technology. The present utility model does not involve improvements to the signal issuance and control methods, and complies with the provisions of the Patent Law on the objects protected by utility models.

[0057] In summary, to use the gastric tube distal detector 310 to determine the position of the first functional section 210 of the gastric tube assembly 100, it is first necessary to fit the body warning assembly 300 to a predetermined position on the patient's abdomen and fix it with medical glue. The distal end of the guide wire 200 is provided with a first functional section 210, which can be a coating or an induction ring, and only this part can generate induction with the body warning assembly 300. The gastric tube distal detector 310 includes a metal detector, a magnetic detector or an RFID detector, which corresponds to the metal coating / ring, magnetic coating / ring or RFID tag reflector at the distal end of the guide wire 200 respectively. The sensing range of these detectors is limited to within 20 cm, so that the gastric tube distal detector 310 can only sense it when the first functional section 210 enters such a sensing range, to ensure accurate positioning. The abnormal position warning assembly 301 and the target position warning assembly 302 are distinguished by their appearance (such as cylindrical and rectangular structures). This difference in appearance allows medical staff to quickly identify which component is issuing an alarm by visual means. The two components can be equipped with indicators such as sound-emitting elements (such as buzzers or speech synthesizers) and / or light-emitting elements (such as LED lights), so that different warning information can be provided when the first functional section 210 is detected by the gastric tube distal detector 310. For example, when the first functional section 210 enters the detection range of the abnormal position warning component 301, the indicator of the abnormal position warning component 301 can emit a continuous buzzing sound and / or flash a red light to indicate a warning state; and when the first functional section 210 enters the detection range of the target position warning component 302, the indicator of the target position warning component 302 can emit a prompt sound of "entering the target area" and / or flash a green light to indicate successful positioning. Through these configurations, it is possible to effectively determine whether the first functional section 210 of the gastric tube component 100 has reached the predetermined position during gastric tube intubation.

[0058] Preferably, if Figure 1 As shown, the distal end of the guidewire 200 is provided with a second functional section 220 made of a flexible material for providing a buffering effect when the guidewire 200 is subjected to excessive thrust, wherein the second functional section 220 is arranged on the side of the first functional section 210 toward the proximal end. The second functional section 220 can be made of medical rubber, which has good elasticity and flexibility, can withstand repeated stretching and compression, and is safe and harmless to human tissue. The second functional section 220 is designed to be cylindrical, and its diameter and length will be adapted according to the size of the first functional section 210 and the guidewire 200 to ensure the tightness of the connection and the overall coordination. The two ends of the second functional section 220 are designed with a socket structure, which can be tightly socketed on the first functional section 210 and the guidewire 200 to ensure the effectiveness of the buffering effect.

[0059] Preferably, if Figure 1As shown, the outer portion of the guidewire 200 is sheathed with a guidewire channel 230, and the diameter of the proximal end of the guidewire 200 is larger than the diameter of the guidewire channel 230, so that the proximal end of the guidewire 200 cannot enter the gastric tube assembly 100 from the guidewire channel 230, thereby preventing the guidewire 200 from sliding into the guidewire channel 230 as a whole. The guidewire channel 230 can be connected to the gastric tube assembly 100 in a detachable manner such as a snap-on connection, so that when the gastric tube assembly 100 is displaced, the guidewire 200 can be synchronized with the position change of the gastric tube assembly 100. Even if the gastric tube assembly 100 is still in the patient's body, the guidewire 200 can be retained in the gastric tube assembly 100 to facilitate subsequent detection of the distal end position of the gastric tube assembly 100.

[0060] According to a preferred embodiment, the surface of the housing 320 containing the gastric tube distal probe 310 is provided with an adhesive coating so that the body surface warning component 300 can be attached to a designated position on the patient's body surface under external force control. Specifically, medical staff can confirm the position 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 3 As shown, in order to avoid the risk of gastric tube insertion into the lungs, the abnormal position warning component 301 is placed at the body surface position corresponding to the tracheal bifurcation of the patient's chest, and the target position warning component 302 is placed at the body surface position corresponding to the gastric cardia. The housing 320 of the abnormal position warning component 301 and the housing 320 of the target position warning component 302 are both provided with an adhesive coating (e.g., medical glue). When in use, the housing 320 of the abnormal position warning component 301 and the housing 320 of the target position warning component 302 can be adhered to the patient's abdominal skin through the adhesive coating, so that the abnormal position warning component 301 and the target position warning component 302 are fixed relative to the patient's body surface. Further, the guide wire 200 is placed in the guide wire channel 230 until the distal end of the guide wire 200 is exposed from the distal end of the gastric tube component 100 lumen. The distal end of the gastric tube component 100 enters the patient's oral cavity. The medical staff adjusts the angle at which the gastric tube component 100 enters the body. When the abnormal position warning component 301 issues an alarm, the medical staff can withdraw the gastric tube component 100 in time and try to intubate again.

[0061] Preferably, when the target position warning component 302 issues an alarm, it indicates that the distal end of the gastric tube component 100 has reached the designated position of the stomach. Medical staff can use conventional means in the prior art (such as traditional adhesive tape fixation) to fix the proximal end of the gastric tube component 100 and withdraw the outer frame 330 and the body surface warning component 300 placed on the patient's body surface. When it is necessary to feed liquid food again, it is only necessary to place the body surface warning component 300 according to the aforementioned method. When the target position warning component 302 issues an alarm, it indicates that the gastric tube component 100 has not been displaced and feeding can be done. When the target position warning component 302 does not issue an alarm, it indicates that the gastric tube component 100 has been displaced, and the medical staff can control the proximal end of the gastric tube component 100 to cause the target position warning component 302 to issue an alarm.

[0062] Preferably, the proximal end of the tube lumen of the gastric tube assembly 100 is provided with a plurality of ports, and the side wall of the distal end of the tube lumen of the gastric tube assembly 100 is provided with a plurality of lateral injection holes. Medical personnel can inject liquid food into the gastric tube assembly 100 through the ports outside the patient's body, and the lateral injection holes can guide the liquid food in the gastric tube assembly 100 into the patient's stomach.

[0063] Preferably, the medical staff can insert the guidewire 200 into the guidewire channel 230 until the distal end of the guidewire 200 emerges from the distal end of the lumen of the gastric tube assembly 100. The distal end of the gastric tube assembly 100 enters the patient's oral cavity. The medical staff adjusts the angle of entry of the gastric tube assembly 100. If the abnormal position warning assembly 301 issues a warning, such as an alarm, the medical staff can promptly withdraw the gastric tube assembly 100 and reenter the tube for intubation.

[0064] When the target position warning component 302 issues an alarm, such as a voice announcement such as "arrived" or "entered the target area", it indicates that the distal end of the gastric tube component 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 component 100 and withdraw the outer frame 330 and the body surface warning component 300 placed on the patient's body surface. When liquid food needs to be fed again, it is only necessary to place the body surface warning component 300 and the outer frame 330 according to the aforementioned method. When the target position warning component 302 issues an alarm, it indicates that the gastric tube component 100 has not been displaced and feeding is possible. When the target position warning component 302 does not issue an alarm, it indicates that the gastric tube component 100 has been displaced, and the medical staff can control the proximal end of the gastric tube component 100 until the target position warning component 302 issues an alarm.

[0065] During the traditional indwelling gastric tube placement process, medical staff often need to use a series of methods to determine whether the gastric tube is correctly placed in the stomach after it reaches the expected target length. If the position is misjudged, the gastric tube needs to be removed and reinserted, which not only increases the complexity of the operation but also brings additional discomfort and risks to the patient. To address this problem, the gastric tube positioning and tracing device of this utility model proposes an innovative solution, transforming result quality management into process quality control.

[0066] The core of the device is the gastric tube distal detector on the body surface, which can sense the position of the guidewire in the gastric tube in real time. Through this technology, medical staff can monitor the position of the gastric tube in real time during the insertion process, and promptly detect and correct any deviations. When the gastric tube mistakenly enters the airway, the detector will issue an error alarm, alerting the medical staff that the gastric tube has been inserted incorrectly, so that timely adjustments can be made. When the gastric tube correctly enters the stomach, the detector will issue a voice prompt "Entering the target area", helping medical staff to judge the position of the gastric tube in real time and make corresponding adjustments. This real-time monitoring and feedback mechanism not only avoids serious complications caused by the gastric tube mistakenly entering the trachea, but also simplifies the operation of judging the position of the gastric tube, improves its reliability and safety, and ensures the comfort of the patient.

[0067] Furthermore, the design of this novel gastric tube positioning and tracing device takes into account the ease of use for medical personnel. It features a detachable guidewire channel and an adhesive-coated housing, simplifying placement and securement. Furthermore, the second functional section of the guidewire provides a cushioning effect, protecting the patient from injury caused by improper operation. These design details further enhance the device's practicality and safety.

[0068] The gastric tube and gastric tube positioning and tracing device involved in this application, due to its high efficiency, accuracy, and non-invasiveness, are generally suitable for various patient groups requiring gastric tube feeding, including patients undergoing gastrointestinal decompression, patients with impaired consciousness, critically ill patients, and patients undergoing oral and maxillofacial surgery requiring nasogastric feeding. With the development of medical technology and the increasing aging of the population, the application prospects of this device are very broad and are expected to play an important role in clinical nursing and improve the quality and efficiency of patient care.

[0069] 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 gastric tube positioning and tracing device, comprising a gastric tube component (100) and a body alarm component (300), characterized in that: A guide wire (200) is provided in the lumen of the gastric tube assembly (100) and can be displaced synchronously with the tube body of the gastric tube assembly (100), wherein the distal end of the guide wire (200) is provided with a first functional section (210), wherein the guide wire (200) is provided with a coating or an induction ring in the first functional section (210) that can be sensed by the body alarm assembly (300).

2. The gastric tube positioning and tracing device according to claim 1, characterized in that: The body alarm component (300) that is attached to the abdomen under the action of external force is provided with a gastric tube distal end detector (310) and a housing (320) for accommodating the gastric tube distal end detector. The body alarm component (300) comprises an abnormal position alarm component (301) arranged in the patient's lungs and a target position alarm component (302) arranged in the patient's stomach, wherein the abnormal position alarm component (301) and the target position alarm component (302) are provided with a sound element and / or a light element capable of emitting a warning signal.

3. The gastric tube positioning and tracing device according to claim 2, characterized in that: The gastric tube distal end detector (310) comprises a metal detector, and the first functional section (210) of the guide wire (200) is coated with a metal coating.

4. The gastric tube positioning and tracing device according to claim 2, characterized in that: The gastric tube distal end detector (310) comprises a magnetic detector, and the first functional section (210) of the guide wire (200) is coated with a magnetic coating.

5. The gastric tube positioning and tracing device according to claim 2, characterized in that: The gastric tube distal end detector (310) includes a radio frequency tag detector, and the first functional section (210) of the guide wire (200) is provided with a radio frequency tag reflector.

6. The gastric tube positioning and tracing device according to claim 1, characterized in that: The distal end of the guide wire (200) is provided with a second functional section (220) made of a flexible material for providing a buffering effect when the guide wire (200) is subjected to excessive thrust, wherein the second functional section (220) is provided on the side of the first functional section (210) facing the proximal end.

7. The gastric tube positioning and tracing device according to claim 6, characterized in that: The gastric tube assembly (100) is detachably connected to a guide wire channel (230), and the guide wire (200) is partially placed in the guide wire channel (230) to ensure synchronous position changes with the gastric tube assembly (100).

8. The gastric tube positioning and tracing device according to claim 1, characterized in that: The proximal end of the lumen of the gastric tube assembly (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 assembly (100) is provided with a plurality of lateral injection holes for guiding the liquid food into the patient's stomach.

9. The gastric tube positioning and tracing device according to claim 2, characterized in that: The surface of the housing (320) accommodating the gastric tube distal end detector (310) is provided with an adhesive coating so that the body surface warning component (300) can be adhered to a designated position on the patient's body surface under the control of external force.

10. A gastric tube, characterized in that: A guide wire (200) is provided in the lumen of the gastric tube and can be displaced synchronously with the tube body of the gastric tube, wherein the distal end of the guide wire (200) is provided with a first functional section (210), wherein the guide wire (200) is provided with a coating or an induction ring that can be sensed by a body alarm component (300) in the first functional section (210).

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