Nasointestinal tube convenient for guide wire to guide catheterization

Abstract

The nasointestinal tube comprises a connector and a catheter, the connector is integrally connected with the tail end of the catheter, the head end of the catheter is in a bullet shape, a penetrating hole is formed in the end portion of the catheter, and a side hole is formed in the side wall close to the head end of the catheter. The joint is a y-shaped joint and comprises a main joint and a side joint, a detachable main joint cap is arranged on the main joint, a silica gel valve is arranged in the middle of the main joint cap, a linear notch is formed in the silica gel valve, and a detachable side joint cap is arranged on the side joint; the guide wire penetrates into the catheter from the through hole and penetrates out of the linear incision of the silica gel valve on the main connector cap, and the lower end of the guide wire is J-shaped. The through hole is formed in the head end of the catheter of the nasointestinal tube, so that the guide wire can penetrate through the nasointestinal tube conveniently, the guide wire can be used for guiding the nasointestinal tube conveniently, and the head end of the nasointestinal tube can reach the target small intestine position.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a nasointestinal tube which is convenient for tube placement under the guidance of a guide wire. Background Art

[0002] Clinically, 30%-46% of critically ill patients experience delayed gastric emptying, which can lead to prolonged mechanical ventilation, prolonged ICU stays, and increased mortality. Nasoenteric tube placement for post-pyloric feeding is the best solution to address these issues.

[0003] However, the success rate of nasogastric tube placement is not 100%. Incorrect placement of the nasogastric tube can lead to a range of complications and even increase the risk of mortality. Current methods for tube placement include blind placement, X-ray, ultrasound, combined aspiration, electromagnetic navigation, acidity measurement, visual guidewire placement, and endoscopy. Endoscopy is the gold standard, with a success rate exceeding 90%. Specific endoscopic methods include standard endoscopic push-through and transnasal endoscopic guidewire placement. Compared with standard endoscopic push-through, transnasal endoscopic guidewire placement allows the guidewire to be advanced to the horizontal duodenum, even to the ascending duodenum and jejunum, allowing for further advancement into the small intestine. This reduces the risk of the nasogastric tube tip protruding beyond the pylorus and becoming entangled in the stomach, and also reduces the risk of digestive fluid retention and aspiration.

[0004] The cap of the current nasogastric tube connector is sealed, preventing the passage of a guidewire. When using a guidewire to guide a nasogastric tube, drinking water is typically injected into the tube to reduce resistance to the guidewire's entry. However, the cap must be opened to allow the water in the tube to escape and hinder smooth guidewire insertion. Utility Model Content

[0005] In view of this, the present invention aims to provide a nasogastric tube that is convenient for guidewire-guided tube placement to solve the above-mentioned problems.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A nasoenteric tube that is convenient for guidewire-guided catheterization comprises a connector and a catheter, wherein the connector is integrally connected to the tail end of the catheter, the head end of the catheter is bullet-shaped and provided with a perforation at the end, and a side hole is provided on the side wall near the head end of the catheter; the connector is a Y-shaped connector, comprising a main interface and a side interface, the main interface is provided with a detachable main interface cap, the middle part of the main interface cap is provided with a silicone valve, the silicone valve is provided with a straight incision, and the side interface is provided with a detachable side interface cap; the guidewire penetrates into the catheter through the perforation and passes through the straight incision of the silicone valve on the main interface cap, and the lower end of the guidewire is J-shaped.

[0008] Furthermore, the main interface cap is integrally connected to the main interface via a connecting strip.

[0009] Furthermore, an annular groove is provided on the edge of the lower surface of the main interface cover, and the annular groove is buckled on the main interface.

[0010] Furthermore, the edge of the main interface cover is protruding to form a tongue.

[0011] Furthermore, the side interface is a Luer interface, and the side interface cap is a Luer interface cap.

[0012] Furthermore, a plurality of side holes are provided.

[0013] Furthermore, the side holes are distributed on both sides of the side wall of the catheter.

[0014] Furthermore, the catheter length is 120-130 cm.

[0015] Furthermore, the guidewire length is 260-280 cm.

[0016] Compared with the prior art, the nasointestinal tube that is convenient for guidewire-guided intubation described in the present invention has the following advantages:

[0017] The nasointestinal tube described in this utility model has a perforation at the catheter tip to facilitate the passage of a guidewire through the tube, allowing the guidewire to be used to guide the tube to the target small intestine. A silicone valve with a straight-shaped incision is provided in the middle of the main interface cap. After the guidewire passes through the silicone valve, the cap seals the main interface, ensuring that the tube remains filled with water as it slides along the guidewire, ensuring smooth passage of the tube and improving the success rate of tube placement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is a schematic structural diagram of a nasointestinal tube that facilitates guidewire-guided catheterization according to an embodiment of the present invention;

[0020] Figure 2 This is a partial enlarged view of point A for facilitating guidewire-guided catheterization according to an embodiment of the present utility model;

[0021] Figure 3 This is a partial enlarged view of point B for facilitating guidewire-guided catheterization as described in an embodiment of the present utility model.

[0022] Description of reference numerals:

[0023] 1. Connector; 11. Main interface; 12. Main interface cap; 121. Silicone valve; 1211. I-shaped incision; 122. Annular groove; 123. Side tongue; 124. Connecting strip; 13. Side interface; 14. Side interface cap; 2. Catheter; 21. Side hole; 22. Perforation; 3. Guidewire. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0028] A nasoenteric tube that is convenient for guidewire-guided catheterization comprises a connector 1 and a catheter 2, wherein the connector 1 is integrally connected to the tail end of the catheter 2, the head end of the catheter 2 is bullet-shaped and provided with a perforation 22 at the end, and a side hole 21 is provided on the side wall near the head end of the catheter 2; the connector 1 is a Y-shaped connector 1, comprising a main interface 11 and a side interface 13, the main interface 11 is provided with a detachable main interface cap 12, the middle part of the main interface cap is provided with a silicone valve 121, the silicone valve 121 is provided with a straight-shaped incision 1211, and the side interface 13 is provided with a detachable side interface cap 14; the guidewire 3 penetrates into the catheter 2 from the perforation 22 and exits from the straight-shaped incision 1211 of the silicone valve 121 on the main interface cap 11, and the lower end of the guidewire 3 is J-shaped.

[0029] Exemplarily, the main interface cap is integrally connected to the main interface via a connecting strip 124 , which prevents the main interface cap from being lost and also facilitates use.

[0030] Illustratively, an annular slot 122 is provided on the edge of the lower surface of the main interface cap, and the annular slot 122 is buckled onto the main interface 11 .

[0031] Exemplarily, the edge of the main interface cap protrudes to form a side tongue 123, which can facilitate opening the main interface cap.

[0032] Exemplarily, the side port 131 is a Luer port, and the side port cover cap 14 is a Luer port cap.

[0033] Exemplarily, there are several side holes 21 .

[0034] Specifically, the side holes 21 are distributed on both sides of the side wall of the catheter 2. The side holes can ensure that the catheter is normally open when the perforation is blocked.

[0035] For example, the length of the catheter 2 is 120-130 cm, specifically 130 cm. The outer wall of the catheter is provided with a water-lubricated coating to improve the smoothness of catheter insertion.

[0036] For example, the length of the guide wire 3 is 260-280 cm, specifically 260 cm. The surface of the guide wire is coated with a water lubricant to improve the smoothness of the guide wire passing into the catheter.

[0037] The nasogastric tube is operated as follows:

[0038] 1. The insertion end of the nasogastric endoscope enters the descending or horizontal segment of the duodenum.

[0039] 2. After lubrication, the guide wire is passed into the duodenum through the gastroscope channel. The nasogastric endoscope is withdrawn using the push-pull method, and the J end of the guide wire remains in the duodenum.

[0040] 3. Lubricate the surface of the nasogastric tube and fill the tube with water.

[0041] 4. Insert the guidewire end through the perforation into the catheter. When the guidewire end reaches the main port, open the main port cap and pass the guidewire end through the main port and out through the straight-edge incision in the silicone valve. Then, securely close the main port cap. At this point, some water will flow out of the catheter. Connect a syringe to the side port and add water to the catheter until it is completely filled with water. Then, replace the side port cap.

[0042] 5. Insert the nasogastric tube along the guide wire, carefully remove the guide wire, and secure the nasogastric tube.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A nasogastric tube that facilitates guidewire placement, characterized by: It includes a connector and a catheter, the connector is integrally connected to the tail end of the catheter, the head end of the catheter is bullet-shaped and has a perforation at the end, and a side hole is provided on the side wall near the head end of the catheter; the connector is a Y-shaped connector, including a main interface and a side interface, the main interface is provided with a detachable main interface cap, the middle of the main interface cap is provided with a silicone valve, the silicone valve is provided with a straight incision, and the side interface is provided with a detachable side interface cap; the guide wire enters the catheter from the perforation and passes through the straight incision of the silicone valve on the main interface cap, and the lower end of the guide wire is J-shaped.

2. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: The main interface cap is integrally connected to the main interface via a connecting strip.

3. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: An annular slot is provided on the edge of the lower surface of the main interface cover, and the annular slot is buckled on the main interface.

4. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: The edge of the main interface cap protrudes to form a tongue.

5. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: The side interface is a Luer interface, and the side interface cap is a Luer interface cap.

6. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: There are several side holes.

7. The nasointestinal tube for convenient guidewire placement according to claim 6, characterized in that: The side holes are distributed on both sides of the side wall of the catheter.

8. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: The catheter length is 120-130 cm.

9. The nasointestinal tube for convenient guidewire placement according to claim 1, characterized in that: The guidewire length is 260-280cm.

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