Visual jejunum tube with camera and use method thereof

Abstract

The visual jejunum tube comprises a catheter body and a guide wire assembly, the guide wire assembly is installed in an inner cavity of the catheter body, the guide wire assembly comprises a guide wire body, the camera, a carbon dioxide sensing element and an acidity sensing element, and a signal transmission line is embedded in the guide wire body. The camera is connected with the industrial control computer through a signal transmission line; the industrial control computer comprises a display screen, an alarm module and a data processing unit, and the alarm module is linked with a carbon dioxide sensing element arranged at the front end of the guide wire body. Images in the digestive tract can be transmitted in real time through the miniature camera integrated at the front end of the guide wire, an operator can clearly observe the advancing path of the catheter in cooperation with the shapeable guide wire, physiological stenosis and important tissue are accurately avoided, damage to the mucous membrane of the digestive tract is reduced, and the catheter indwelling success rate can be greatly increased.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a visual jejunal tube with a camera and its method of use. Background Technology

[0002] Nasojejunal tube placement, also known as nasojejunal feeding tube placement, is a key technique in clinical practice for establishing an enteral nutrition pathway for patients with impaired gastric function or at risk of reflux but normal small bowel function. The core of this technique involves inserting a specially designed catheter through the nasal cavity, passing sequentially through the pharynx, esophagus, and stomach, ultimately reaching the jejunum. This allows for the direct delivery of nutrients, fluids, and medications to the small intestine, bypassing the stomach. Compared to traditional gastric tubes, jejunal tubes significantly reduce the risk of gastric retention, vomiting, and aspiration pneumonia, playing an irreplaceable role in the diagnosis and treatment of severe pancreatitis, gastroparesis, and post-esophageal surgery patients. With the development of medical technology, jejunal tube placement has evolved from the early blind insertion method that relied on the operator's experience to a more precise and visualized approach. Currently, the commonly used bedside placement technique allows the procedure to be performed at the patient's bedside without requiring transport to the endoscopy room, thus meeting the diagnostic and treatment needs of critically ill ICU patients. Traditional blind insertion relies on positional guidance, respiratory rhythm coordination, and medication assistance, and the success rate is greatly affected by the operator's experience. Existing visualization technology can only provide a general image of the path in the digestive tract, which cannot accurately avoid the risk of misinsertion of the airway and is difficult to quickly confirm whether the tube has entered the stomach. This can easily lead to prolonged tube insertion time, increased patient discomfort, and even complications such as airway damage and infection.

[0003] Therefore, we propose a visual jejunal tube with a camera and its usage method. Summary of the Invention

[0004] The purpose of this invention is to provide a visual jejunal tube with a camera and a method for using it, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a visual jejunal tube with a camera, comprising a catheter body and a guidewire assembly, wherein the guidewire assembly is installed in the inner lumen of the catheter body, and the guidewire assembly includes a guidewire body, a camera, a carbon dioxide sensing element, and an acid sensing element; a signal transmission line is embedded in the guidewire body, and the camera is connected to an industrial control computer through the signal transmission line; the industrial control computer includes a display screen, an alarm module, and a data processing unit, and the alarm module is linked to the carbon dioxide sensing element disposed at the front end of the guidewire body.

[0006] In a preferred embodiment of the present invention, the guidewire body is made of a malleable medical metal material, and the camera is sealed and encapsulated at the front end of the guidewire body, which has waterproof and pH-gastric acid corrosion resistance properties, and the shooting angle is °-°.

[0007] In a preferred embodiment of the present invention, the carbon dioxide sensing element is disposed adjacent to the camera at the front end of the guide wire body.

[0008] In a preferred embodiment of the present invention, the acid sensing element is mounted on the end of the guidewire body and is arranged in a triangular pattern with the carbon dioxide sensing element and the camera.

[0009] In a preferred embodiment of the present invention, the catheter body is made of medical flexible material, the outer wall is coated with medical lubricating coating, and the distal end is provided with a through hole for infusing nutrient solution, water and drugs. The inner diameter of the catheter body is adapted to the outer diameter of the guidewire assembly and can be sleeved on the outside of the guidewire assembly.

[0010] In a preferred embodiment of the present invention, the data processing unit of the industrial control computer is used to receive and process the image data transmitted by the camera and the sensing signals of the carbon dioxide sensing element and the acid sensing element, and the display screen is used to display the images of the digestive tract collected by the camera in real time.

[0011] This invention also relates to a method of using a visual jejunal tube with a camera, comprising the following steps: Step 1: Preoperative preparation: Verify patient information, assess catheterization conditions, prepare instruments and ensure all components are functioning properly; Step 2, Catheter Pretreatment: Place the catheter body over the outside of the guidewire assembly and apply medical lubricant; Step 3, Visualized Intubation: The tube is inserted through the nasal cavity, and its advancement is observed through the display screen. The alarm module helps to prevent misinsertion of the airway. Step 4: Intragastric confirmation: By combining imaging and colorimetric charts to compare the signals of the acid sensing element, confirm that the catheter has entered the stomach; Step 5: Jejunal positioning and fixation: Advance the catheter to the designated position in the jejunum in coordination with the breathing rhythm, and fix the main body of the catheter; Step 6, Postoperative care: Remove the guidewire assembly, adjust the infusion function, and perform regular maintenance on the catheter.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses a miniature camera integrated at the tip of the guidewire to transmit images of the digestive tract in real time. With the help of the malleable guidewire, the operator can clearly observe the path of the catheter, accurately avoid physiological stenosis and important tissues, reduce damage to the digestive tract mucosa, and significantly improve the success rate of catheter placement. By linking the carbon dioxide sensing element with the alarm module, an audible and visual alarm can be triggered immediately when the catheter is mistakenly inserted into the airway, thus avoiding complications such as damage and infection caused by the catheter continuing to penetrate deeper into the airway. The acid-sensing element eliminates the need for additional detection equipment, allowing for quick and intuitive determination of whether the catheter has entered the stomach. This avoids repeated catheter placement due to blind judgment, shortens operation time, and reduces patient discomfort. Attached Figure Description

[0013] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of a visual jejunal tube with a camera according to the present invention; Figure 2 This is an enlarged view of a visual jejunal tube A with a camera according to the present invention; Figure 3 This is a control system diagram for a visual jejunal tube with a camera according to the present invention. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0015] like Figure 1-3 As shown, a visual jejunal tube with a camera is specifically constructed as follows: The catheter body 1 is made of a medical-grade flexible material with good biocompatibility and flexibility, conforming to the physiological curvature of the digestive tract during insertion and reducing mechanical irritation to the mucosa. The outer wall of the catheter body 1 is uniformly coated with a medical-grade lubricating coating, which has excellent lubrication properties, reducing frictional resistance between the catheter and the digestive tract wall during insertion and improving insertion patency. A through-hole is located at the distal end of the catheter body 1 for postoperative infusion of nutritional solutions, fluids, and medications, ensuring smooth nutritional and drug delivery. The inner diameter of the catheter body 1 is matched to the outer diameter of the guidewire assembly, allowing for a tight fit around the guidewire assembly, ensuring coaxiality and stability after assembly and preventing relative displacement during insertion.

[0016] The guidewire assembly is installed inside the catheter body 1 and mainly consists of the guidewire body 2, camera 21, carbon dioxide sensing element 22 and acid sensing element 23.

[0017] The guidewire body 2 is made of a malleable medical-grade metal material. This material possesses sufficient support strength to guide the catheter body 1 smoothly, and can be shaped according to the anatomical structure of the digestive tract to adapt to the physiological characteristics of different patients. The guidewire body 2 contains embedded signal transmission lines, providing a pathway for signal transmission between the camera 21, sensing elements, and the industrial control computer. The signal transmission lines are shielded to effectively prevent external interference and ensure the stability and accuracy of signal transmission.

[0018] The camera 21 is sealed and encapsulated at the front end of the guidewire body 2. The encapsulation process ensures that the camera 21 has good waterproof performance and can withstand the corrosion of the gastric acid environment in the digestive tract, ensuring normal operation during catheter placement and use. The camera 21 can collect image information in the digestive tract in real time and transmit it to the industrial control computer through the embedded signal transmission line.

[0019] The carbon dioxide sensing element 22 and the camera 21 are arranged adjacent to each other at the front end of the guidewire body 2. This position ensures that the sensing element can quickly sense changes in the carbon dioxide concentration in the surrounding environment and promptly provide feedback on the environmental information of the catheter's location.

[0020] The acid sensing element 23 is installed at the end of the guidewire body 2 and is arranged in a triangle with the carbon dioxide sensing element 22 and the camera 21. This arrangement allows the three components to function independently without interference, while also collecting environmental information from different angles, improving the comprehensiveness and accuracy of the detection. The acid sensing element 23 can accurately sense changes in the pH of the surrounding environment, providing a basis for determining whether the catheter has entered the stomach.

[0021] The industrial control computer, serving as the core of control and data processing, includes a display screen, an alarm module, and a data processing unit. The data processing unit receives image data transmitted from camera 21, as well as sensing signals from carbon dioxide sensor 22 and acid sensor 23. It rapidly processes and analyzes this data and signals, feeding the processing results back to the display screen and providing trigger signals to the alarm module. The display screen shows real-time images of the digestive tract captured by camera 21, along with relevant information analyzed by the data processing unit, providing the operator with a clear and intuitive visual reference. The alarm module is linked to carbon dioxide sensor 22. When the carbon dioxide concentration detected by carbon dioxide sensor 22 reaches a set threshold, the alarm module immediately triggers an audible and visual alarm, reminding the operator to take timely action.

[0022] The specific instructions for using a visual jejunal tube are as follows: Preoperative preparation: Prepare the visual jejunal tube, medical lubricant, fixation device and other related instruments. At the same time, check the integrity and functional status of each component, and adjust the imaging effect of the camera 21, the sensitivity of the carbon dioxide sensor element 22 and the acid sensor element 23, and the display and alarm functions of the industrial control computer to ensure that all components can work normally.

[0023] Catheter pretreatment: Place the catheter body 1 over the guidewire assembly, ensuring proper assembly and good coaxiality. Apply an appropriate amount of medical lubricant to the outer wall and distal end of the catheter body 1, ensuring even coverage without any missed areas, to further reduce frictional resistance during catheter placement and minimize irritation to the patient's digestive tract mucosa.

[0024] Visualized catheter insertion: The operator holds the prepared catheter body 1 and slowly inserts it into the patient's nasal cavity. During insertion, the operator observes the images of the digestive tract captured by camera 21 in real time on the industrial control computer's display screen. Following the path shown in the images, the operator slowly advances the catheter body 1. Simultaneously, the operator closely monitors the status of the alarm module. If airway misinsertion occurs with the catheter body 1, the carbon dioxide sensor 22 will detect a high concentration of carbon dioxide, triggering an audible and visual alarm. The operator should immediately stop advancing the catheter body 1, retract it appropriately, adjust its direction, and attempt insertion again. The alarm module effectively mitigates the risk of airway misinsertion.

[0025] Intragastric Confirmation: When the catheter body 1 is advanced to the suspected intragastric position, the image information on the display screen is combined with the detection signal from the acidity sensor 23, and a colorimetric card is used to quickly determine whether the catheter body 1 has entered the stomach. If the comparison result matches the acidity / alkalinity characteristics of the intragastric environment, the catheter body 1 is confirmed to have successfully entered the stomach; if it is not confirmed to have entered the stomach, the position of the catheter body 1 needs to be adjusted and the test repeated until it is confirmed to have entered the stomach, to avoid repeated catheter placement due to blind judgment.

[0026] Jejunal positioning and fixation: After confirming that the catheter body 1 has entered the stomach, continue to advance the catheter body 1 slowly and steadily according to the patient's breathing rhythm. During the advancement, continuously observe the image on the display screen to guide the catheter body 1 towards the jejunum until it is pushed to the designated position in the jejunum. Once the designated position is reached, use a special fixation device to fix the catheter body 1 to the patient's nasal ala and cheek. When fixing, ensure that the catheter body 1 is firmly fixed to prevent displacement or dislodgement, and at the same time, pay attention to the moderate fixing force to avoid compressing the patient's skin.

[0027] Postoperative care: After fixation is completed, slowly remove the guidewire assembly. During the removal process, be gentle to avoid traction or damage to the catheter body 1. Adjust the infusion function of the catheter body 1 and try to infuse a small amount of normal saline through the distal port. Observe whether the infusion is smooth and whether there is any leakage. During postoperative use, regularly check the fixation, patency, and patient tolerance of the catheter body 1.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A visualized jejunal tube with a camera, comprising a catheter body (1), a guide wire assembly, characterized in that: The guide wire assembly is installed in the inner cavity of the catheter body (1), and the guide wire assembly comprises a guide wire body (2), a camera (21), a carbon dioxide sensing element (22), and an acid sensing element (23), the guide wire body (2) is embedded with a signal transmission line, and the camera (21) is connected with an industrial computer through the signal transmission line; the industrial computer comprises a display screen, an alarm module, and a data processing unit, and the alarm module is linked with the carbon dioxide sensing element arranged at the front end of the guide wire body.

2. The visualized jejunal tube with a camera according to claim 1, wherein: The guide wire body (2) is made of a plastic medical metal material, the camera (2) is sealed and packaged at the front end of the guide wire body, has the performance of waterproof and resistance to pH 1-3 gastric acid corrosion, and the shooting angle is 120°-150°.

3. The visualized jejunal tube with camera according to claim 1, wherein: The carbon dioxide sensing element (22) is arranged adjacent to the camera (2) at the front end of the guide wire body.

4. The visualized jejunal tube with camera of claim 1, wherein: The acid sensing element is installed at the end of the guide wire body (2), and is in a triangular distribution with the carbon dioxide sensing element (22) and the camera (21).

5. The visualized jejunal tube with camera according to claim 1, wherein: The catheter body is made of a medical flexible material, the outer wall is coated with a medical lubricating coating, the distal end is provided with a through hole for infusing nutrient solution, moisture and medicine, and the inner diameter of the catheter body is matched with the outer diameter of the guide wire assembly, which can be sleeved outside the guide wire assembly.

6. The visualized jejunal tube with camera of claim 1, wherein: The data processing unit of the industrial computer is used for receiving and processing the image data transmitted by the camera (2) and the sensing signals of the carbon dioxide sensing element (21) and the acid sensing element (22), and the display screen is used for real-time display of the image in the digestive tract collected by the camera (21).

7. A method of using a visualized jejunal tube with a camera, suitable for the visualized jejunal tube with a camera according to any one of claims 1-6, characterized in that: The method comprises the following steps: Step one, preoperative preparation: check patient information, evaluate catheterization conditions, prepare instruments and debug the function of each part; Step two, catheter pretreatment: the catheter body (1) is sleeved outside the guide wire assembly, and medical lubricant is applied; Step three, visual catheterization: insert the catheter through the nasal cavity, observe the image and avoid airway misinsertion by the alarm module; Step four, intragastric confirmation: combine the image and the color card to compare the acid sensing element signal, and confirm that the catheter enters the stomach; Step five, jejunum positioning and fixing: advance the catheter to the specified position of the jejunum according to the breathing rhythm, and fix the catheter body; Step six, postoperative care: remove the guide wire assembly, debug the infusion function and regularly maintain the catheter.

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