Guiding structure and controllable front guide intestinal obstruction balloon cannula

Abstract

The utility model relates to a guide structure which comprises a guide tube connected with an intubation tube body. A guide head is arranged at the tail end of the guide tube; and a guide rod is fixedly arranged on the guide head. According to the endoscope, the guide rod can be directly clamped through the metal clip, so that the pylorus can pass through the endoscope and is kept at a proper position. The utility model further relates to the controllable front guide intestinal obstruction balloon cannula comprising the guide structure. According to the utility model, the guide tube and the guide head are arranged to replace a guide wire, so that the operation difficulty and the early-stage preparation time are reduced; the guide rod is arranged on the guide head, so that an endoscope can directly clamp the guide rod through the metal clip to realize the passing of a pylorus and keep the pylorus at a proper position; the positioning head is arranged on the guide rod, so that the metal clip is effectively prevented from being separated from the front end in the process of clamping the guide rod to move, and the operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of gastrointestinal medical devices, and particularly relates to a guiding structure and a controllable front guide intestinal obstruction balloon intubation tube. Background Art

[0002] A nasogastric intubation tube is a medical device that can be inserted into the human nasal cavity and into the gastrointestinal tract, used for delivering nutrient solutions or drugs, or collecting gastrointestinal contents for examination. A direct nasogastric tube is a thin tube inserted through the nostril into the esophagus, stomach, duodenum, and then into the jejunum, mainly used for drainage after gastroscopy or gastric nutritional support, and can also be used for measuring gastric acid secretion and gastric juice pH value, administering drugs and treatment, assisting respiratory function, and intestinal obstruction decompression, etc. Indwelling gastric tube is an important means for observing the condition and treating diseases clinically.

[0003] The technical solution disclosed in the utility model patent with the application number 202220271638.9, publication number CN 216985739 U, and patent name "A Nasogastric Intubation Device Guided by Gastroscope" includes a disposable nasogastric tube. However, this nasogastric tube needs to be connected to a biopsy forceps and a gastroscope using silk threads, and a guide wire also needs to be inserted into the tube. Therefore, the preparatory work before use is relatively cumbersome. Although the success rate is improved compared with traditional intubation under gastroscope, there are still deficiencies during use. Therefore, it is necessary to design a nasogastric intubation tube with a more concise structure and more convenient use. Summary of the Invention

[0004] The utility model provides a guiding structure and a controllable front guide intestinal obstruction balloon intubation tube to solve the technical problems existing in the known technology, which has the characteristics of concise structure and convenient use.

[0005] The utility model includes the following technical solutions: a guiding structure, including a guiding tube connected to the intubation tube body, with a guiding head provided at the end of the guiding tube; a guiding rod is fixedly installed on the guiding head. The endoscope can directly pass through the pylorus and be held in place by clamping the guiding rod with a metal clip.

[0006] Further, a positioning head with a diameter larger than that of the guiding rod is fixedly installed at the end of the guiding rod to prevent the guiding rod from slipping out from the front end during the process of the metal clip clamping and moving the guiding rod.

[0007] Further, the length of the guiding head is 10 - 25 mm, the length of the guiding rod is 5 - 15 mm, and the diameter of the guiding rod is 0.8 - 2.5 mm.

[0008] Further, a through hole for injecting water or inflating is provided in the middle of the guiding head; the through hole is perpendicular to the length direction of the tube body of the guiding tube and penetrates both sides of the guiding head.

[0009] Further, hydrophilic coatings are provided on the outer surfaces of both the guiding tube and the guiding head.

[0010] The utility model further includes the following technical solution: A controllable leading intestinal obstruction balloon catheter, including a catheter body, further includes the above guiding structure; the end of the catheter body is connected to the guiding tube.

[0011] Further, a balloon is provided on the catheter body, and a plurality of side leakage holes are provided on the catheter body near the balloon along the length direction of the tube body.

[0012] Further, a steel ball holder is fixed to the outer surface of the end of the catheter body by sleeving a silica gel tube; the steel ball holder includes a spring and a plurality of steel balls, and a through hole for installing the spring is provided inside the steel ball, and both ends of the spring are flush with the outer edges of the two outermost steel balls.

[0013] Further, the upper end of the catheter body is branched into a main catheter, a ventilation tube and a balloon communication tube through a catheter joint.

[0014] Further, each balloon communication tube is connected to a corresponding balloon, and a balloon valve is provided on the balloon communication tube.

[0015] The advantages and positive effects of the utility model are:

[0016] 1. By providing a guiding tube and a guiding head to replace the function of a guide wire, the utility model reduces the operation difficulty and the preparation time in the early stage.

[0017] 2. A guiding rod is provided on the guiding head of the utility model, and the endoscope can directly pass through the pylorus and be kept in an appropriate position by clamping the guiding rod with a metal clip.

[0018] 3. A positioning head is provided on the guiding rod adopted by the utility model, which effectively prevents the metal clip from slipping out from the front end during the process of clamping and moving the guiding rod, and the operation is more convenient. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the utility model;

[0020] Figure 2 is the enlarged schematic diagram of the guiding head structure;

[0021] Figure 3 is the enlarged schematic diagram of the steel ball holder structure;

[0022] In the figure, 1 - catheter body; 101 - side leakage hole; 102 - first balloon; 103 - second balloon; 2 - guiding tube; 3 - guiding head; 301 - through hole; 4 - guiding rod; 5 - catheter joint; 6 - main catheter; 7 - ventilation tube; 8 - first balloon communication tube; 9 - second balloon communication tube; 10 - positioning head; 11 - silica gel tube; 12 - steel ball holder. Detailed implementation manners

[0023] To further disclose the content, features and effects of the invention, the following examples are specifically given and described in detail with reference to the accompanying drawings. It should be understood that the orientation or positional relationships indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to this patent.

[0024] In the description of the following embodiments, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0025] Embodiment 1: Refer to the attached Figures 1-3 , a guiding structure, including a guiding tube 2 connected to the body 1 of the connecting cannula. A guiding head 3 is provided at the end of the guiding tube 2; a guiding rod 4 is fixedly installed on the guiding head 3. The endoscope can directly pass through the pylorus by clamping the guiding rod 4 with a metal clip and be maintained in an appropriate position. The length of the guiding head 3 is 10 - 25 mm, the length of the guiding rod 4 is 5 - 15 mm, and the diameter of the guiding rod 4 is 0.8 - 2.5 mm. A positioning head 10 with a diameter larger than that of the guiding rod 4 is fixedly installed at the end of the guiding rod 4 to prevent the guiding rod 4 from slipping out from the front end during the process of being clamped by the metal clip. A through hole 301 for injecting water or inflating is provided in the middle of the guiding head 3; the through hole 301 is perpendicular to the length direction of the tube body of the guiding tube 2 and penetrates both sides of the guiding head 3. Hydrophilic coatings are provided on the outer surfaces of the guiding tube 2 and the guiding head 3.

[0026] Embodiment 2: Refer to the attached Figures 1-3, A controllable leading intestinal obstruction balloon catheter, comprising a catheter body 1, and further comprising the guiding structure in Embodiment 1; the end of the catheter body 1 is connected to a guiding tube 2. The end of the catheter body 1 and the guiding tube 2 are fixed by adhesion. A first balloon 102 and a second balloon 103 are provided on the catheter body 1, and a plurality of side leakage holes 101 are provided on the catheter body 1 near the first balloon 102 and the second balloon 103 along the length direction of the tube body. The upper end of the catheter body 1 is branched into a main catheter 6, a ventilation tube 7, a first balloon communication tube 8 and a second balloon communication tube 9 through a catheter joint 5. The main catheter 6 is connected to other suction devices or drug delivery devices through a connecting three-way stopcock joint. The first balloon communication tube 8 is connected to the first balloon 102, and the second balloon communication tube 9 is connected to the second balloon 103. Balloon valves are provided on both the first balloon communication tube 8 and the second balloon communication tube 9 to facilitate controlling the volume of the balloons.

[0027] The outer surface of the end of the catheter body 1 is fixed with a steel ball holder 12 by sleeving a silica gel tube 11; the steel ball holder 12 includes a spring and three steel balls (three in this example, generally three to six are acceptable), and through holes for installing the spring are provided inside the steel balls, and the two ends of the spring are flush with the outer edges of the two outermost steel balls.

[0028] Working process: After the equipment and tools are prepared completely, place the patient in a suitable position, and the commonly used positions are the supine position or the head tilted to one side. Use a syringe to apply an anesthetic lubricant to the front end part of the catheter to lubricate the catheter. Then use the forceps of the gastroscope (i.e., the metal clip) to hold the front guiding rod 4 of the nasogastric catheter and pass through the pylorus and duodenum, and maintain an appropriate position. The catheter inserted into the nostril should bypass the trachea and directly enter the esophagus to reduce discomfort such as aspiration. After inserting into the esophagus, nutrient solution or drugs can be injected, and decompression suction can be started after entering the jejunum through the duodenum. After the operation is completed, pay attention to observing the vital signs of the patient and the condition of the nasogastric catheter to prevent the occurrence of complications.

[0029] Although the preferred embodiments of the present invention are described above, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the purpose of the present invention and the scope protected by the claims. These all belong to the protection scope of the present invention.

Claims

1. A guiding structure includes a guiding tube connected to the cannula body, characterized in that: The end of the guiding tube is provided with a guiding head; a guiding rod is fixedly installed on the guiding head; a positioning head with a diameter larger than that of the guiding rod is fixedly installed at the end of the guiding rod; the length of the guiding head is 10 - 25 mm, the length of the guiding rod is 5 - 15 mm, and the diameter of the guiding rod is 0.8 - 2.5 mm; a through hole for injecting water or inflating is provided in the middle of the guiding head; the through hole is perpendicular to the length direction of the tube body of the guiding tube and penetrates both sides of the guiding head; hydrophilic coatings are provided on the outer surfaces of both the guiding tube and the guiding head.

2. A controllable leading intestinal obstruction balloon catheter, comprising a catheter body, characterized in that: It further includes the guiding structure as described in Claim 1; the end of the intubation body is connected to the guiding tube.

3. The controllable leading intestinal obstruction balloon catheter according to claim 2, characterized in that: A balloon is provided on the intubation body, and a number of side leakage holes are provided along the length direction of the tube body on the intubation body near the balloon.

4. A controllable leading intestinal obstruction balloon catheter according to claim 3, characterized in that: The outer surface at the end of the intubation body fixes a steel ball holder by sleeving a silica gel tube; the steel ball holder includes a spring and a number of steel balls, a through hole for installing the spring is provided in the steel ball, and the two ends of the spring are flush with the outer edges of the outermost two steel balls.

5. A controllable leading intestinal obstruction balloon catheter according to claim 3, characterized in that: The upper end of the intubation body branches out an intubation main tube, a ventilation tube and a balloon communication tube through an intubation joint.

6. The controllable leading intestinal obstruction balloon catheter according to claim 5, characterized in that: Each of the balloon communication tubes is connected to a corresponding balloon, and a balloon valve is provided on the balloon communication tube.

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