Multifunctional bedside nasojejunum nutrition tube placement training device

Abstract

The utility model discloses a multifunctional bedside nasojejunum nutrition tube placement training device which comprises a head and neck bionic block, a nasopharyngeal cavity channel is arranged in the head and neck bionic block; the pleuroperitoneal cavity frame comprises a hard simulation frame and bionic skin covering the hard simulation frame. Wherein the head and neck bionic block and the pleuroperitoneal cavity frame are integrally formed or detachably connected. A bionic esophagus, a bionic stomach, a bionic duodenum and a part of bionic jejunum which are sequentially connected are arranged in the pleuroperitoneal cavity frame, and a bionic cardia and a bionic pylorus are arranged at the head end and the tail end of the bionic stomach respectively. A bionic inferior vena cava, a bionic abdominal aorta, a bionic mesenteric superior vein and a bionic mesenteric superior artery are further arranged in the pleuroperitoneal cavity frame; the bionic inferior vena cava and the bionic abdominal aorta are arranged on the rear sides of the bionic stomach and the bionic duodenum, the bottom ends are closed, and the head ends penetrate out of the bionic skin; the bottom ends of the bionic superior mesenteric vein and the bionic superior mesenteric artery are closed, and the head ends of the bionic superior mesenteric vein and the bionic superior mesenteric artery partially wrap the bionic duodenum and then penetrate out of the bionic skin.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology and relates to a multifunctional bedside nasojejunal feeding tube insertion training device. Background Technology

[0002] Enteral nutrition (EN) is a nutritional support method that provides metabolically necessary nutrients and other nutrients through the gastrointestinal tract. With the deepening research into the structure and function of the gastrointestinal tract in recent years, it has become increasingly clear that the gastrointestinal tract is not only a digestive and absorptive organ, but also an important immune organ. Therefore, compared to parenteral nutrition (PN), the advantages of EN are not only reflected in the direct absorption and utilization of nutrients through the intestine, which is more physiologically sound, convenient for administration, and inexpensive, but also in its ability to help maintain the integrity of the intestinal mucosal structure and barrier function.

[0003] Early enteral nutrition support is superior to total parenteral nutrition in improving patient prognosis and maintaining nutritional status. For malnourished patients or those at high risk of malnutrition, enteral nutrition should be initiated more aggressively, especially for critically ill patients; it is recommended to start enteral nutrition within 24-48 hours. The jejunum is the main site of digestion and absorption of food in the human body and is an important component of the small intestine; the ligament of Treitz in the duodenum is an important landmark at the beginning of the jejunum. Enteral nutrition via a jejunal feeding tube can significantly improve the prognosis of patients with post-esophagogastric surgery complications, upper gastrointestinal obstruction, and critical illness.

[0004] There are surgical and non-surgical methods for jejunal feeding tube placement. Surgical methods include intraoperative placement of the nasojejunal feeding tube, intraoperative jejunostomy, and laparoscopic jejunostomy with tube placement. Non-surgical methods include blind insertion, X-ray fluoroscopy guidance, bedside ultrasound guidance, endoscopic-assisted methods, and magnetic correlation technology-guided placement. For critically ill patients, blind insertion and ultrasound-guided jejunal tube placement are often used, with final confirmation by X-ray. Both blind and ultrasound-guided jejunal tube placement have a certain failure rate, making repeated practice and teaching crucial. However, currently, there is no similar simulation teaching equipment, and beginners can only practice on animals, which is insufficient for clinical and teaching needs. Utility Model Content

[0005] This invention addresses the aforementioned problems by providing a multifunctional bedside nasojejunal feeding tube insertion training device. It integrates bionic organs of the digestive system to simulate the insertion path of the nasojejunum, making it suitable for clinical training and teaching of nasojejunal feeding tube insertion, as well as for operation demonstrations and conference presentations.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model has the following technical features: including

[0008] A bionic block for the head and neck, with an internal nasopharyngeal passage;

[0009] The thoracic and abdominal framework includes a rigid simulated frame and bionic skin covering it;

[0010] The head and neck bionic block is integrally formed with the thoracic and abdominal cavity framework or can be detachably connected. The thoracic and abdominal cavity framework is equipped with a bionic esophagus, bionic stomach, bionic duodenum and part of bionic jejunum connected in sequence. The bionic stomach has a bionic cardia and a bionic pylorus at its head and tail ends, respectively.

[0011] The thoracic and abdominal framework also includes a bionic inferior vena cava, a bionic abdominal aorta, a bionic superior mesenteric vein, and a bionic superior mesenteric artery. The bionic inferior vena cava and the bionic abdominal aorta are located behind the bionic stomach and the bionic duodenum, with their bottom ends closed and their head ends protruding through the bionic skin. The bionic superior mesenteric vein and the bionic superior mesenteric artery have their bottom ends closed, and their head ends partially wrap around the bionic duodenum before protruding through the bionic skin.

[0012] The training device provided by this invention can simulate the structure of the human head and neck, nasal cavity, and jejunum, as well as the peristalsis of the esophagus, cardia, stomach, and pylorus, closely resembling the actual gastrointestinal motility. Through this device, medical personnel can simulate the real process of nasojejunal feeding tube insertion, practice correct operating procedures and techniques, and improve the accuracy and safety of insertion.

[0013] Preferably, in the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model, the head and neck bionic block is made of rigid plastic using 3D printing technology, and has a protrusion with external threads at the bottom end; the top part of the thoracic and abdominal frame has a through hole adapted to the protrusion, and the protrusion is fixed with bolts after passing through the through hole. This fixing method helps to strengthen the connection and tightness between the head and neck bionic block and the thoracic and abdominal frame.

[0014] Preferably, the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model has a bionic esophagus, bionic stomach, bionic duodenum, part of bionic jejunum, bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery regulating groove at the bottom end of the thoracic and abdominal cavity frame to fix the position of the above-mentioned bionic organs.

[0015] The bionic esophagus has a sealing rubber ring at its head end. When the bionic head and neck block is connected to the thoracic and abdominal cavity frame, the bionic esophagus and the nasopharyngeal cavity passage are in sealed contact.

[0016] Preferably, the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model has a bionic esophagus and a bionic stomach connected together, and a bionic stomach connected to a bionic duodenum, a bionic duodenum, and a portion of a bionic jejunum. The bionic cardia and bionic pylorus are respectively located below and above the connection opening.

[0017] Further optimization reveals that both the biomimetic cardia and the biomimetic pylorus are composed of two semi-circular biomimetic plates. Each of these semi-circular biomimetic plates is equipped with a spring, which is compressed when the jejunum passes between the two semicircles. In the absence of external force, the two semi-circular biomimetic plates adhere together under the restoring force of the springs, simulating the closing and opening actions of the cardia and pylorus.

[0018] Preferably, in the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model, the bionic esophageal opening, bionic cardia, bionic stomach cavity, and bionic pylorus are all made of ultrasonically detectable materials, which facilitates ultrasonic exploration during jejunal tube insertion.

[0019] Preferably, in the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model, the bionic skin, bionic esophagus, bionic stomach, bionic duodenum, bionic jejunum, bionic cardia and bionic pylorus, bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery are all made of TPE bionic material.

[0020] Preferably, the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model has silicone plugs on the tips of the bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery, which can both seal the openings and allow for injection. By injecting water into the four bionic blood vessels (inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery), they can be visualized under ultrasound, forming a fluid-filled dark area.

[0021] Preferably, the rigid simulation frame of the multifunctional bedside nasojejunal feeding tube insertion training device provided by this utility model is made of rigid plastic 3D printing.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] (1) Complete simulation of the human nasopharynx and related structures and anatomical details of the upper digestive tract.

[0024] (2) The biomimetic material can simulate the shape of the esophagus, stomach cavity, and duodenum, and has peristaltic function, contractility, and can form swallowing action. The model biomimetic material can be used to use ultrasound to explore whether the jejunum tube can smoothly enter the esophageal opening, gastric cardia, and pylorus, and to observe the course of the jejunum tube in the body in real time, meeting the needs of teaching and training.

[0025] (3) The technique is easy to master and is of great significance for early enteral nutrition support for critically ill patients.

[0026] (4) Modules can be added, which increases the difficulty of operation and may cause complications, leaving room for improvement and upgrading.

[0027] (5) Provide opportunities for hands-on practice: Medical staff can practice their skills and procedures by simulating the actual nasojejunal feeding tube insertion process, thereby improving their proficiency.

[0028] (6) Improved placement accuracy: The training device helps medical staff become familiar with the placement path and key techniques of the nasojejunal feeding tube, improving the accuracy and success rate of placement. Enhanced safety: Correct placement of the nasojejunal feeding tube is crucial for patient safety and treatment outcomes. The training device can help medical staff improve the safety and standardization of the procedure. Attached Figure Description

[0029] Figure 1 A schematic diagram of the external structure of a multifunctional bedside nasojejunal feeding tube insertion training device;

[0030] Figure 2 A schematic diagram of the internal structure of a multifunctional bedside nasojejunal feeding tube insertion training device;

[0031] Figure 3 This is a schematic diagram of a biomimetic cardia or biomimetic pylorus. Detailed Implementation

[0032] 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. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0033] Combination Figures 1-2 The multifunctional bedside nasojejunal feeding tube insertion training device 100 mainly consists of two parts: a head and neck bionic block 1 and a thoracic and abdominal frame 2. The thoracic and abdominal frame 2 includes a rigid simulated frame 21 and bionic skin 22 covering it.

[0034] according to Figure 1The head and neck bionic block is made of rigid plastic using 3D printing technology. It has a nasopharyngeal cavity channel 11 inside and a protrusion 12 with external threads at the bottom. The top part of the rigid simulation frame 21 has a through hole 211 that fits the protrusion 12. The protrusion 12 passes through the through hole 211 and is fixed with bolts. This fixing method helps to strengthen the connection between the head and neck bionic block and the thoracic and abdominal frame, and prevents the head and neck bionic block 1 and the thoracic and abdominal frame 2 from falling off during training.

[0035] Within the thoracic and abdominal frame 2, a bionic esophagus 3, a bionic stomach 4, a bionic duodenum 5, and a portion of a bionic jejunum 6 are sequentially connected. The bionic stomach has a bionic cardia 41 and a bionic pylorus 42 at its head and tail ends, respectively. The thoracic and abdominal frame also includes a bionic inferior vena cava 7, a bionic abdominal aorta 8, a bionic superior mesenteric vein 9, and a bionic superior mesenteric artery 10. The bottom of the thoracic and abdominal frame has a regulating groove for these bionic organs to fix their positions.

[0036] The bionic esophagus has a sealing rubber ring at the head end. When the bionic head and neck block is connected to the thoracic and abdominal cavity frame, the bionic esophagus and the nasopharyngeal cavity passage 11 are in sealed contact.

[0037] The bionic esophagus and bionic stomach are spliced ​​together, and the bionic stomach is also spliced ​​together with the bionic duodenum, the bionic duodenum, and part of the bionic jejunum. The bionic cardia and bionic pylorus are located below and above the connection opening, respectively, so as not to interfere with the connection between the bionic organs.

[0038] Combination Figure 3 Both the biomimetic cardia and the biomimetic pylorus are composed of two semi-circular biomimetic plates 43. Each of these two semi-circular biomimetic plates is equipped with a spring 44. When the jejunum passes between the two semicircles, the springs are compressed. In the absence of external force, under the action of the spring's restoring force, the two semi-circular biomimetic plates stick together, simulating the closing and opening actions of the cardia and pylorus.

[0039] The bionic inferior vena cava 7 and bionic abdominal aorta 8 are located posterior to the bionic stomach 4 and bionic duodenum 5, with their bases closed and their tips protruding through the bionic skin. The bionic superior mesenteric vein 9 and bionic superior mesenteric artery 10 are also closed at their bases, with their tips wrapping around the anterior side of the bionic duodenum, passing behind the bionic stomach, and then protruding through the bionic skin. Each of the four bionic blood vessels has a silicone plug at its tip, which can both seal the opening and allow for injection. By injecting water into the four bionic blood vessels—the inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery—they can be visualized under ultrasound, forming a fluid-filled dark area.

[0040] In terms of material selection, the bionic esophageal opening, bionic cardia, bionic stomach cavity, and bionic pylorus are all made of ultrasound-probemable materials, facilitating ultrasound examination during jejunal tube insertion. The bionic skin, bionic esophagus, bionic stomach, bionic duodenum, bionic jejunum, bionic cardia and pylorus, bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery are all made of TPE bionic material.

[0041] The training device provided by this invention can simulate the structure of the human head and neck, nasal cavity, and jejunum, as well as the peristalsis of the esophagus, cardia, stomach, and pylorus, closely resembling the actual gastrointestinal motility. Through this device, medical personnel can simulate the real process of nasojejunal feeding tube insertion, practice correct operating procedures and techniques, and improve the accuracy and safety of insertion.

[0042] The preferred embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A multifunctional bedside nasojejunal feeding tube insertion training device, characterized in that, include: A bionic block for the head and neck, with an internal nasopharyngeal passage; The thoracic and abdominal framework includes a rigid simulated frame and bionic skin covering it; The head and neck bionic block is integrally formed with or detachably connected to the thoracic and abdominal frame. Within the thoracic and abdominal cavity framework, a bionic esophagus, a bionic stomach, a bionic duodenum, and part of a bionic jejunum are sequentially connected. The bionic stomach has a bionic cardia and a bionic pylorus at its head and tail ends, respectively. The thoracic and abdominal framework also includes a bionic inferior vena cava, a bionic abdominal aorta, a bionic superior mesenteric vein, and a bionic superior mesenteric artery. The bionic inferior vena cava and the bionic abdominal aorta are located behind the bionic stomach and the bionic duodenum, with their bottom ends closed and their head ends protruding through the bionic skin. The bionic superior mesenteric vein and the bionic superior mesenteric artery have their bottom ends closed, and their head ends partially wrap around the bionic duodenum before protruding through the bionic skin.

2. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The head and neck bionic block is made of rigid plastic using 3D printing technology, and has a protrusion with external threads at the bottom. The top part of the thoracic and abdominal frame has a through hole that matches the protrusion, and the protrusion is fixed with bolts after passing through the through hole.

3. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The bottom end of the thoracic and abdominal cavity framework is equipped with bionic esophagus, bionic stomach, bionic duodenum, part of bionic jejunum, bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery regulating grooves. The bionic esophagus is equipped with a sealing rubber ring at its head end. After the head and neck bionic block is connected to the thoracic and abdominal cavity frame, the bionic esophagus and the nasopharyngeal cavity passage are in sealed contact.

4. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The bionic esophagus and bionic stomach are spliced ​​and connected, and the bionic stomach is also spliced ​​and connected to the bionic duodenum, the bionic duodenum, and part of the bionic jejunum. The bionic cardia and bionic pylorus are respectively located below and above the connection port.

5. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 4, characterized in that: in, Both the bionic cardia and the bionic pylorus are composed of two semi-circular bionic plates, each with a spring. When the jejunum passes between the two semi-circles, the spring is compressed.

6. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The bionic skin, bionic esophagus, bionic stomach cavity, bionic duodenum, bionic jejunum, bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery are all made of TPE bionic material.

7. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, Silicone plugs are provided on the cephalic portions of the bionic inferior vena cava, bionic abdominal aorta, bionic superior mesenteric vein, and bionic superior mesenteric artery.

8. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The rigid simulation frame was fabricated using rigid plastic 3D printing.

9. The multifunctional bedside nasojejunal feeding tube insertion training device according to claim 1, characterized in that: in, The bionic esophageal opening, bionic cardia, bionic stomach cavity, and bionic pylorus are all made of ultrasonically detectable materials.

Images