Nasogastric tube with three lumens and nasogastric tube with three lumens

Abstract

This utility model belongs to the technical field of three-lumen nasal gastrointestinal tubes, specifically relating to catheters and tubes for three-lumen nasal gastrointestinal tubes. A catheter for a three-lumen nasal gastrointestinal tube includes a connected three-lumen tube and an intestinal tube. The three-lumen tube has a three-lumen diaphragm inside, dividing the interior of the three-lumen tube into a feeding chamber, a suction chamber, and a pressure regulating chamber. The end of the three-lumen diaphragm near the intestinal tube is located inside the three-lumen tube, forming a single-lumen orifice at the front end of the three-lumen tube. The rear end of the intestinal tube is connected to the single-lumen orifice of the three-lumen tube, and the diameter of the intestinal tube gradually decreases along the direction away from the three-lumen tube. A three-lumen nasal gastrointestinal tube includes a bullet-shaped tip, a three-lumen connector, a three-lumen tube, an intestinal tube, and a bullet-shaped tip connected in sequence. A mesh reinforcement is provided inside the through-hole of the bullet-shaped tip. The mesh reinforcement prevents the guide wire from extending beyond the end of the bullet-shaped tip, improving safety.

Description

Technical Field

[0001] This utility model belongs to the field of three-lumen nasal gastrointestinal tube technology, specifically relating to the catheter and the three-lumen nasal gastrointestinal tube. Background Technology

[0002] The three-cavity nasogastric tube is a medical device that integrates gastric cleaning and decompression, duodenal or jejunal nutrition supply, and gastrointestinal decompression.

[0003] The three-lumen nasogastric tube mainly consists of a three-lumen connector, a three-lumen tube, and an intestinal tube. The three-lumen tube is divided into a feeding lumen, a suction lumen, and a pressure regulating lumen, with the feeding lumen corresponding to the intestinal tube's lumen.

[0004] Currently, clinical catheter placement methods include intraoperative catheterization and pyloric catheterization relying on the patient's gastric motility. Pyloric catheterization relying on the patient's gastric motility, performed while the patient is awake, has the following disadvantages:

[0005] 1. For example Figure 1 As shown, a molded connector 7 is used to connect the three-lumen tube 2 and the intestinal tube 3. The outer diameter of the connector 7 is larger than the outer diameter of the corresponding catheter at the connection between the three-lumen tube 2 and the intestinal tube 3, forming a protrusion. When it passes through the patient's mouth and nose, it will cause scraping and pain to the patient.

[0006] 2. For example Figure 1 As shown, the transition area (i.e., the protrusion) between the three-lumen tube 2 and the intestinal tube 3 is prone to tube breakage because the outer diameters are inconsistent. The intestinal tube with the smaller outer diameter has a larger bending range and is prone to tube breakage. The tube needs to be removed and re-inserted, which increases the workload of medical staff.

[0007] 3. For example Figure 2 As shown, guidewire 5 is inserted into the catheter according to the predetermined process requirements, and the tip of guidewire 5 needs to be 5-10mm away from bullet head 4. However, the catheter is made of polyurethane material through extrusion processing, which has a certain degree of shrinkage. Therefore, in actual use, there is a certain probability that guidewire 5 will protrude from the outlet 42 of bullet head 4, causing guidewire 1 to scratch the human mucosal tissue during catheter placement and causing internal bleeding. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0009] A three-lumen nasogastric tube catheter includes a connected three-lumen tube and an intestinal tube. The three-lumen tube has a three-lumen septum inside, which divides the interior of the three-lumen tube into a feeding chamber, a suction chamber, and a pressure regulating chamber. The end of the three-lumen septum near the intestinal tube is located inside the three-lumen tube, so that a single lumen is formed inside the front end of the three-lumen tube.

[0010] The rear end of the intestinal segment connects to a single lumen in the three-lumen tube, and the diameter of the intestinal segment gradually decreases as it moves away from the three-lumen tube.

[0011] Furthermore, the outer wall of the posterior end of the intestinal tube is bonded to the inner wall of the single lumen of the three-lumen tube.

[0012] Furthermore, the posterior end face of the intestinal tube is bonded to the anterior end face of the three-lumen diaphragm.

[0013] Furthermore, the suction chamber and pressure regulating chamber within the three-lumen tube are in a non-obstructed state.

[0014] Furthermore, the front ends of the suction chamber and pressure regulating chamber inside the three-lumen tube are filled with UV glue, and the rear end face of the intestinal tube is bonded to the front end face of the three-lumen tube diaphragm using UV glue.

[0015] Furthermore, the feeding cavity is unobstructed.

[0016] Secondly,

[0017] This utility model provides a three-lumen nasogastric tube, including a three-lumen connector, a catheter of the aforementioned three-lumen nasogastric tube, and a bullet head, wherein the three-lumen connector, the three-lumen tube and the intestinal tube, and the bullet head are connected in sequence;

[0018] It also includes a guidewire, which is inserted into the feeding cavity and intestinal tract of the three-lumen tube;

[0019] The bullet head has a through hole, and the thinner end of the intestinal tube is connected to the bullet head; a mesh reinforcement is provided inside the through hole of the bullet head.

[0020] Furthermore, the bullet head adheres to the intestinal tract.

[0021] Furthermore, the bullet head has a liquid outlet, and the through hole is connected to the liquid outlet.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. In this invention, the connection between the three-lumen tube and the intestinal tube is achieved by connecting the rear end of the intestinal tube to the single lumen of the three-lumen tube, with the diameter of the intestinal tube gradually decreasing along the direction away from the three-lumen tube. This results in a smooth transition without protrusions at the connection between the three-lumen tube and the intestinal tube, ensuring patient comfort.

[0024] 2. The transition between the three-lumen tube and the intestinal tube in this utility model is smooth, and there is no abrupt change in the outer diameter, ensuring that the intestinal tube will not break in the human body.

[0025] 3. The bullet-shaped tube of this utility model has a mesh rib inside the through hole, which prevents the guide wire from protruding and avoids the guide wire scratching the human mucosal tissue and causing internal bleeding during the insertion process. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the three-lumen nasal gastrointestinal tract involved in the background technology;

[0027] Figure 2 This is a schematic diagram of the guidewire passing through the intestinal tract, as described in the background art.

[0028] Figure 3 This is a schematic diagram of the structure of the three-cavity nasal gastrointestinal tube of this utility model;

[0029] Figure 4 This is a schematic diagram of the disassembled three-cavity nasal gastrointestinal tube of this utility model.

[0030] Figure 5 For the present utility model Figure 2 A magnified view of point A;

[0031] Figure 6 This is a schematic diagram of the bullet head of Embodiment 2 of this utility model.

[0032] Figure label:

[0033] 1 is a three-lumen connector; 2 is a three-lumen tube; 3 is an intestinal tube; 4 is a bullet head; 5 is a guide wire; 6 is UV glue; 20 is a three-lumen tube diaphragm; 21 is a feeding chamber; 22 is a suction chamber; 23 is a pressure regulating chamber; 24 is a single-lumen hole; 41 is a through hole; 42 is a liquid outlet; 43 is a mesh reinforcement.

[0034] 7 represents the connector. Detailed Implementation

[0035] The technical solution of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are not all embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] It should be noted that the terms "center", "upper", "lower", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Example 1

[0038] Combination Figures 3-5 As shown, this utility model provides a three-lumen nasogastric tube catheter, which includes a three-lumen tube 2 and an intestinal tube 3 connected together;

[0039] The three-lumen tube 2 is equipped with a three-lumen tube diaphragm 20, which divides the interior of the three-lumen tube 2 into a feeding chamber 21, a suction chamber 22, and a pressure regulating chamber 23.

[0040] The rear end of the three-lumen diaphragm 20 is flush with the rear end of the three-lumen tube 2. By cutting off a certain length of the diaphragm, the front end of the three-lumen diaphragm 20 is shorter than the front end of the three-lumen tube 2, leaving a single-lumen hole 24 for the connection between the three-lumen tube 2 and the intestinal tube 3. The single-lumen hole 24 is formed by cutting off a certain length of the three-lumen diaphragm through a cutting process, so that a single-lumen space (i.e., single-lumen hole 24) of a certain length is formed at the front end of the three-lumen tube 2.

[0041] Intestinal segment 3 is a variable diameter structure, with its diameter gradually decreasing from back to front (i.e., along the direction away from the three-lumen tube).

[0042] The intestinal tube 3 is made of thermoplastic polyurethane granules (TPU). The intestinal tube 3 is extruded using a TPU precision tubing extruder. The TPU precision tubing extruder has a built-in traction speed change function, and after setting the relevant parameters, it can complete the extrusion of variable diameter tubes. Any equipment with the function of extruding variable diameter tubes can be used for the TPU precision tubing extruder, such as the YTG-55 TPU hose precision extruder.

[0043] The rear end of the intestinal tube 3 is connected to the single-lumen orifice 24. Specifically, the outer wall of the rear end of the intestinal tube 3 is bonded to the inner wall of the single-lumen orifice 24 of the three-lumen tube.

[0044] The posterior end face of the intestinal tube 3 is bonded to the posterior end face of the three-lumen tube diaphragm 20. The suction chamber 22 and pressure regulating chamber 23 within the three-lumen tube 2 are not patent. The feeding chamber 21 is patent. Specifically,

[0045] UV glue 6 is filled in the front end of suction chamber 22 and pressure regulating chamber 23, and the rear end face of intestinal tube 3 is bonded to suction chamber 22 and pressure regulating chamber 23 of three-lumen tube 2 by UV glue 6.

[0046] Example 2

[0047] Combination Figures 3-5 As shown, this utility model provides a three-lumen nasogastric tube, including a three-lumen connector 1, a catheter of embodiment 1, a bullet head 4, and a guide wire 5. The three-lumen connector 1, the three-lumen tube 2, the intestinal tube 3, and the bullet head 4 are connected in sequence, with the position of the bullet head 4 being the foremost point.

[0048] The guide wire 5 is inserted into the feeding chamber 21 and the intestinal tube 3 of the three-lumen tube 2 to make the front end of the intestinal tube 3 visible.

[0049] The bullet head 4 has a through hole 41 and a liquid outlet 42. The front end of the intestinal tube 3 is fitted into the through hole 41, and the through hole 41 communicates with the liquid outlet 42.

[0050] like Figure 6As shown, in order to prevent the guidewire 5 from extending out of the outlet 42 of the bullet head 4, a mesh rib 43 is provided in the through hole 41 of the bullet head 4 to prevent the guidewire 5 from extending out of the outlet 42 of the bullet head 4, so that the front end of the guidewire 5 maintains the required distance of 5-10mm from the through hole 41 of the bullet head 4, thereby preventing the guidewire 5 from scratching the human mucosal tissue and causing internal bleeding during the catheter placement process.

[0051] The above technical features constitute the preferred embodiment of this utility model, which has strong adaptability and optimal implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the needs of different situations.

[0052] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A catheter for a triple lumen nasogastric- enteric tube, the catheter comprising a connected triple lumen tube and an enteric tube, characterized in that, The three-lumen tube has a three-lumen diaphragm inside, which divides the interior of the three-lumen tube into a feeding chamber, a suction chamber, and a pressure regulating chamber; the end of the three-lumen diaphragm closest to the intestine is located inside the three-lumen tube, so that a single lumen is formed inside the front end of the three-lumen tube. The rear end of the intestinal segment connects to a single lumen in the three-lumen tube, and the diameter of the intestinal segment gradually decreases as it moves away from the three-lumen tube.

2. The catheter of the triple lumen nasogastric-gastroenteric tube according to claim 1, wherein, The outer wall of the posterior end of the intestinal tube is bonded to the inner wall of the single lumen of the three-lumen tube.

3. The catheter of the triple lumen nasogastric-gastroenteric tube according to claim 1, wherein, The posterior end face of the intestinal tube is bonded to the anterior end face of the three-lumen diaphragm.

4. The catheter of the triple lumen nasogastric-gastroenteric tube according to claim 1, wherein, The suction chamber and pressure regulating chamber inside the three-lumen tube are not in a state of unobstructed flow.

5. The catheter of the triple lumen nasogastric-gastroenteric tube according to claim 1, wherein, The front end of the suction chamber and pressure regulating chamber inside the three-lumen tube is filled with UV glue, and the rear end of the intestinal tube is bonded to the front end of the three-lumen tube diaphragm with UV glue.

6. The catheter of the triple lumen nasogastric-gastroenteric tube according to claim 1, wherein, The feeding chamber of the three-lumen tube is connected to the intestinal tract.

7. A triple lumen nasogastric- enteric tube comprising a triple lumen connector, characterized in that, It also includes the catheter of the three-lumen nasogastric tube as described in any one of claims 1-6, and the bullet head, the three-lumen connector, the three-lumen tube and the intestinal tube, and the bullet head connected in sequence; It also includes a guidewire, which is inserted into the feeding cavity and intestinal tract of the three-lumen tube; The bullet head has a through hole, and the thinner end of the intestinal tube is connected to the bullet head; a mesh reinforcement is provided inside the through hole of the bullet head.

8. The tri-lumen nasogastric-gastroenteric tube according to claim 7, wherein, The bullet head is adhered to the intestinal tract.

9. The tri-lumen nasogastric-gastroenteric tube according to claim 8, wherein, The bullet has a liquid outlet, and the through hole is connected to the liquid outlet.

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