Gastroscopy visualized guide type nasogastric tube

Abstract

This invention provides a endoscopic visualization-guided nasogastric tube, belonging to the field of medical devices. It includes a catheter with an operating mechanism at its top, a guiding component inside, and a connecting component at its tail. The operating mechanism allows for the suction of residual gastric fluid through the suction port, preventing reflux. The air / water supply is then activated to inject warm water, promoting pyloric peristalsis. The water flow washes away mucus and food residue adhering to the endoscope lens or catheter tip, preventing misjudgment of catheter position. Inflation fills the pylorus, reducing the contact area between the stomach wall and the catheter, lowering the risk of adhesion or obstruction. The guiding component prevents the guidewire from folding when passing through curved structures, and the snake-bone guide allows for precise advancement by bending the catheter tip. The lens provides real-time imaging, preventing blind insertion and improving the success rate of catheter placement while reducing the risk of complications.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, specifically to a gastroscopy-guided nasogastric tube. Background Technology

[0002] Gastroscopy is a common endoscopic examination that involves inserting a thin, flexible tube (gastroscope) into the mouth, through the esophagus, and into the stomach. This allows for direct observation of the stomach's interior to diagnose and treat stomach diseases. During the examination, a nasogastric tube with visualization guidance is used.

[0003] A search revealed that Chinese Patent Publication No. CN215780050U discloses a "Visual Guided Disposable Nasogastric Tube, comprising a disposable nasogastric feeding tube and a visual guide device; the visual guide device includes: a traction body penetrating inside the disposable nasogastric feeding tube, with the head end of the traction body extending from the tail end and head end of the disposable nasogastric feeding tube, forming a coaxial overall structure with the traction body and the disposable nasogastric feeding tube; a snake-bone guide device located at the head end of the traction body; a traction wrench located at the tail end of the traction body, rotating the traction wrench to adjust the forward direction of the snake-bone guide device; an image acquisition device for acquiring images of the traction body and the disposable nasogastric tube entering the body; an illumination device providing a cold light source; and a display device for displaying images acquired by the image acquisition device to monitor the position of the head end within the digestive tract in real time. This utility model, based on visualization and guided operation, avoids operational errors, is safe and well-tolerated by patients, and eliminates the need for X-ray confirmation after tube placement, ensuring 100% successful placement to the jejunum." However, it still has the following drawbacks:

[0004] Although this device allows for visual catheter placement, the lighting and image acquisition devices are easily obstructed by secretions or food residue during insertion. When the stomach wall comes into contact with the catheter, the catheter may adhere to the gastric mucosa, making it difficult to adjust the direction of the catheter. The device adjusts the direction via a handle and does not have an angle locking function. The direction of the catheter tip is easily deviated due to the patient's breathing and gastrointestinal peristalsis, increasing the risk of catheter placement. Therefore, a gastroscopy-guided nasogastric tube is proposed. Utility Model Content

[0005] The purpose of this invention is to address the problems of existing endoscopic visualization-guided nasogastric tubes. While these devices allow for visual insertion, the lighting and image acquisition devices are easily obstructed by secretions or food residue during insertion. Furthermore, when the stomach wall contacts the tube, it can adhere to the gastric mucosa, making it difficult to adjust the tube's direction. The device uses a handle for direction adjustment but lacks an angle locking function, and the tube tip is prone to shifting due to the patient's breathing and gastrointestinal peristalsis, increasing the risk of insertion complications.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] Endoscopic visualization-guided nasogastric tubes can improve the above-mentioned problems.

[0008] The present invention is as follows: it includes a conduit, an operating mechanism is provided at the top of the conduit, a guiding component is provided inside the conduit, and a connecting component is provided at the tail of the conduit;

[0009] The operating mechanism includes a housing, an up / down angle control knob, an up / down angle latch, a left / right angle control knob, a left / right angle latch, a suction hole, a suction button, an air / water supply hole, and an air / water supply button. The housing is located at the top of the conduit. The up / down angle control knob is located on the outer wall of the housing. The up / down angle latch is fixedly connected to the side wall of the up / down angle control knob. The left / right angle control knob is located on the outer wall of the up / down angle control knob. The left / right angle latch is located on the outer wall of the left / right angle control knob. The suction hole is connected to the outer wall of the housing. The suction button is located on the outer wall of the suction hole. The air / water supply hole is connected to the outer wall of the housing. The air / water supply button is located on the outer wall of the air / water supply hole.

[0010] As a preferred technical solution of this utility model, the guiding component includes a guide wire, a snake-bone guide core, and a lens. The guide wire is disposed inside the catheter, one end of the guide wire is connected to the housing, the snake-bone guide core is disposed at the other end of the guide wire, and the lens is disposed at the tail end of the snake-bone guide core.

[0011] As a preferred technical solution of this utility model, the connecting component includes an interface, a connecting strip, a sealing cap, and a side opening. The interface is connected to the tail end of the conduit, and the cavity of the interface is connected to the cavity of the conduit. One end of the connecting strip is fixedly connected to the outer wall of the interface, the sealing cap is fixedly connected to the other end of the connecting strip, and the side opening is connected to the outer wall of the interface.

[0012] As a preferred technical solution of this utility model, a cold light source probe is provided on the outer side of the lens, and the diameter of the cold light source probe is smaller than the diameter of the conduit.

[0013] As a preferred technical solution of this utility model, an image processor is provided on one side of the housing, and a display screen is provided on the side wall of the image processor. The image processor, lens and display screen are electrically connected.

[0014] As a preferred technical solution of this utility model, the outer side of the starting end of the catheter is provided with four side holes.

[0015] As a preferred technical solution of this utility model, the outer wall of the catheter is provided with scale markings along the length direction.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Using the set operating mechanism, turn on the suction button to aspirate residual gastric juice from the stomach through the suction hole to prevent reflux. Then turn on the air and water supply button to inject warm water to promote pyloric peristalsis. The water flow can wash away mucus, blood or food residue attached to the endoscope lens or the tip of the catheter, keeping the field of vision clear and avoiding misjudging the catheter position. Inflate the pylorus with air. After the gastric cavity expands, the contact area between the stomach wall and the catheter is reduced, reducing the risk of adsorption or jamming.

[0018] 2. Through the designed guiding components, the guidewire provides axial rigidity to the catheter, preventing folding when passing through curved structures. The snake-bone guide allows the catheter tip to bend as needed, and the angle lock fixes the direction, achieving precise advancement. The lens provides real-time images of the stomach, pylorus, and duodenum, avoiding blind insertion, improving the success rate of catheter placement, and reducing the risk of complications. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of the endoscopic visualization-guided nasogastric tube provided by this utility model;

[0020] Figure 2 A schematic diagram of the side hole structure of the endoscopic visualization-guided nasogastric tube provided by this utility model;

[0021] Figure 3 A schematic diagram of the operating mechanism of the gastroscopy visualization-guided nasogastric tube provided by this utility model;

[0022] Figure 4 A schematic diagram of the connection component structure of the gastroscopy visualization-guided nasogastric tube provided by this utility model;

[0023] Figure 5 The endoscopic visualization-guided nasogastric tube provided by this utility model Figure 4 Enlarged view of point A in the middle.

[0024] The diagram shows: 1. Guide tube; 2. Operating mechanism; 3. Guiding assembly; 4. Connecting assembly; 5. Cold light source probe; 6. Image processor; 7. Display screen; 8. Side hole; 9. Scale markings; 201. Housing; 202. Up / down angle control knob; 203. Up / down angle lock; 204. Left / right angle control knob; 205. Left / right angle lock; 206. Suction hole; 207. Suction button; 208. Air / water supply hole; 209. Air / water supply button; 301. Guide wire; 302. Snake-bone guide core; 303. Lens; 401. Interface; 402. Connecting strip; 403. Sealing cap; 404. Side port. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1-5 As shown, this embodiment proposes a gastroscopy-guided nasogastric tube, including a catheter 1, an operating mechanism 2 at the top of the catheter 1, a guiding component 3 inside the catheter 1, and a connecting component 4 at the tail of the catheter 1.

[0030] like Figure 3As shown, the operating mechanism 2 includes a housing 201, an up / down angle control knob 202, an up / down angle lock 203, a left / right angle control knob 204, a left / right angle lock 205, a suction hole 206, a suction button 207, an air / water supply hole 208, and an air / water supply button 209. The housing 201 is located at the top of the conduit 1. The up / down angle control knob 202 is located on the outer wall of the housing 201. The up / down angle lock 203 is fixedly connected to the side wall of the up / down angle control knob 202. The left / right angle control knob 204 is located on the outer wall of the up / down angle control knob 202. The left / right angle lock 205 is located on the outer wall of the left / right angle control knob 204. The suction hole 206 is connected to the outer wall of the housing 201. The suction button 207 is located on the outer wall of the suction hole 206. The air / water supply hole 208 is connected to the outer wall of the housing 201. The air / water supply button 209 is located on the outer wall of the air / water supply hole 208. The gastric juice remaining in the stomach is aspirated through the suction port 206 to prevent reflux. Warm water is injected through the air and water supply port 208. The water flow can rinse the mucus attached to the endoscope lens 303 or the tip of the catheter 1 to maintain a clear field of vision and avoid misjudging the position of the catheter 1. Inflation fills the pylorus with air. After the gastric cavity expands, the contact area between the stomach wall and the catheter 1 is reduced, reducing the risk of adsorption or jamming.

[0031] like Figure 4 and Figure 5 As shown, the guiding assembly 3 includes a guidewire 301, a snake-bone guide core 302, and a lens 303. The guidewire 301 is disposed inside the catheter 1, with one end connected to the housing 201. The snake-bone guide core 302 is disposed at the other end of the guidewire 301, and the lens 303 is disposed at the tail end of the snake-bone guide core 302. The guidewire 301 maintains axial rigidity during advancement to prevent kinking in tortuous intestinal tracts. The snake-bone guide core 302 allows the tip of the catheter 1 to bend as needed, and the angle lock fixes the direction for precise advancement. The lens 303 provides real-time images of the stomach, pylorus, and duodenum, avoiding blind insertion, improving the success rate of catheter placement, and reducing the risk of complications.

[0032] like Figure 4 As shown, the connecting component 4 includes an interface 401, a connecting strip 402, a sealing cap 403, and a side opening 404. The interface 401 is connected to the tail end of the catheter 1, and the cavity of the interface 401 is connected to the cavity of the catheter 1. One end of the connecting strip 402 is fixedly connected to the outer wall of the interface 401, and the sealing cap 403 is fixedly connected to the other end of the connecting strip 402. The side opening 404 is connected to the outer wall of the interface 401. The interface 401 can be connected to an external syringe or pump to achieve precise infusion. The sealing cap 403 covers the interface 401 during non-use periods to prevent the intrusion of environmental microorganisms.

[0033] like Figure 1As shown, a cold light source probe 5 is disposed on the outer side of the lens 303. The diameter of the cold light source probe 5 is smaller than the diameter of the conduit 1. The cold light source probe 5 uses an LED or xenon lamp cold light source, which achieves high-brightness illumination through optical fiber transmission, while controlling the heat generated by the light energy to be less than 1°C, thus avoiding the burning of the mucous membrane by traditional hot light sources.

[0034] like Figure 1 As shown, an image processor 6 is installed on one side of the housing 201, and a display screen 7 is installed on the side wall of the image processor 6. The image processor 6, lens 303, and display screen 7 are electrically connected. The image processor 6 transmits real-time images to the display screen 7 through intelligent processing, improving the safety and efficiency of the entire tube placement process.

[0035] like Figure 2 As shown, four side holes 8 are provided on the outer side of the starting end of the catheter 1. During high-flow drainage, the side holes 8 can help increase drainage efficiency and reduce the risk of mucosal adhesion in a single hole.

[0036] like Figure 1 As shown, the outer wall of the catheter 1 has scale markings 9 along its length. The insertion depth of the catheter 1 can be read directly through the scale markings 9, avoiding reliance on a single image for confirmation and reducing the number of X-ray fluoroscopy sessions.

[0037] Specifically, when using this endoscopic visualization-guided nasogastric tube: Hold the tube 1 with sterile gauze in one hand and grasp the tip of the tube 1 with forceps in the other hand. Slowly insert it into the selected nostril. Before insertion, retract the guidewire 301 into the tube 1 to avoid scratching the nasal cavity and throat during advancement. When the tube 1 is slowly inserted into the nasal cavity to a depth of 25cm, the image processor 6 can capture an image with the lens 303 and transmit it to the display screen 7. After the lens 303 and the snake-bone guide core 302 are extended and observed to confirm that they have reached the esophagus, continue insertion into the stomach. Turn on the suction button 207 and guide the tube through the suction port. 206. Suction the remaining gastric juice in the stomach to prevent reflux. Then turn on the air and water supply button 209 and inject warm water to promote pyloric peristalsis. The water flow can rinse the mucus, blood or food residue attached to the endoscope lens 303 or the tip of the catheter 1 to maintain a clear field of vision and avoid misjudging the position of the catheter 1. Inflate the pylorus with air. After the gastric cavity expands, the contact area between the stomach wall and the catheter 1 is reduced, reducing the risk of adsorption or jamming. After the pylorus expands slowly and enters the pylorus, after seeing a large number of intestinal villi, extend the catheter 1 downward about 10cm. Then pull out the guide wire 301 and the snake-bone guide core 302 to complete the catheter placement.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A gastroscopically visualized guiding nasogastric tube comprising a catheter (1), characterized in that, An operating mechanism (2) is provided at the top of the conduit (1), a guide component (3) is provided inside the conduit (1), and a connecting component (4) is provided at the tail of the conduit (1). The operating mechanism (2) includes a housing (201), an up-and-down angle control knob (202), an up-and-down angle lock (203), a left-and-right angle control knob (204), a left-and-right angle lock (205), a suction hole (206), a suction button (207), an air-and-water supply hole (208), and an air-and-water supply button (209). The housing (201) is located at the top of the conduit (1), the up-and-down angle control knob (202) is located on the outer wall of the housing (201), and the up-and-down angle lock (203) is fixedly connected to the up-and-down angle control knob (204). On the side wall of 02), the left and right angle control knob (204) is disposed on the outer wall of the up and down angle control knob (202), the left and right angle lock (205) is disposed on the outer wall of the left and right angle control knob (204), the suction hole (206) is disposed on the outer wall of the housing (201), the suction button (207) is disposed on the outer wall of the suction hole (206), the air and water supply hole (208) is disposed on the outer wall of the housing (201), and the air and water supply button (209) is disposed on the outer wall of the air and water supply hole (208).

2. The gastroscopy visualized nasogastric tube according to claim 1, wherein, The guiding assembly (3) includes a guide wire (301), a snake-bone guide core (302), and a lens (303). The guide wire (301) is disposed inside the catheter (1). One end of the guide wire (301) is connected to the housing (201). The snake-bone guide core (302) is disposed at the other end of the guide wire (301), and the lens (303) is disposed at the tail end of the snake-bone guide core (302).

3. The gastroscopy visualized nasogastric tube according to claim 1, wherein, The connecting component (4) includes an interface (401), a connecting strip (402), a sealing cap (403), and a side opening (404). The interface (401) is connected to the tail end of the conduit (1), and the cavity of the interface (401) is connected to the cavity of the conduit (1). One end of the connecting strip (402) is fixedly connected to the outer wall of the interface (401), the sealing cap (403) is fixedly connected to the other end of the connecting strip (402), and the side opening (404) is connected to the outer wall of the interface (401).

4. The gastroscopy visualized nasogastric tube according to claim 2, wherein, A cold light source probe (5) is provided on the outside of the lens (303), and the diameter of the cold light source probe (5) is smaller than the diameter of the conduit (1).

5. The endoscopic visualization-guided nasogastric tube according to claim 1, characterized in that, An image processor (6) is provided on one side of the housing (201), and a display screen (7) is provided on the side wall of the image processor (6). The image processor (6), the lens (303) and the display screen (7) are electrically connected.

6. The endoscopic visualization-guided nasogastric tube according to claim 1, characterized in that, The outer side of the starting end of the catheter (1) is provided with a side hole (8), and the number of the side holes (8) is four.

7. The endoscopic visualization-guided nasogastric tube according to claim 1, characterized in that, The outer wall of the catheter (1) is marked with scale markings (9) along its length.

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