A dual function gastrointestinal drainage feeding tube

Abstract

The utility model discloses a kind of gastrointestinal tract drainage feeding tube with double function, it is related to medical instrument technical field, specifically including interface section, double-cavity developing section and single-cavity developing section, interface section is connected by double-cavity tube with double-cavity developing section, double-cavity developing section is connected by single-cavity tube with single-cavity developing section, double-cavity tube includes drainage cavity and feeding cavity, drainage and feeding double function collaborative design, two channels are independent and parallel, do not interfere with each other, solve the problem of difficult nutrition supply of drainage feeding tube, the double-cavity developing section includes inner cavity and outer cavity, the inner cavity is connected with feeding cavity, the outer cavity is arranged at the outer portion of inner cavity and is connected with drainage cavity, a plurality of drainage holes are formed in the surface of outer cavity, the outer portion of outer cavity is covered with support layer, the support layer is provided with anti-adhesion coating outside, the composite structure of support layer and anti-adhesion coating realizes triple function of support, drainage, anti-adhesion, not only structure is stable, and healing environment is optimized, secondary injury is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a dual-function digestive tract drainage and feeding tube. Background Technology

[0002] A drainage and feeding tube for postoperative wound and fistula healing in the digestive tract is proposed, suitable for treatment and nutritional support after surgery for upper gastrointestinal tumors such as esophageal cancer and gastric cancer. Traditional drainage and feeding tubes are mostly single-lumen tubes, allowing only unidirectional drainage. Tumor-induced esophageal strictures or postoperative scar hyperplasia often affect patients' eating. If nutritional support cannot be provided simultaneously, malnutrition will worsen. Furthermore, ordinary drainage tubes adhere tightly to tissues, easily causing secondary damage during removal. The few double-lumen tube designs are mostly simple combinations, failing to achieve synergistic optimization of drainage and feeding, and lacking an active mechanism to promote fistula contraction and wound healing. Additionally, the materials have insufficient biocompatibility, easily triggering inflammatory reactions. Utility Model Content

[0003] The technical problem to be solved by this invention is that the drainage feeding tube is difficult to supply nutrition to and is prone to adhesion to tissues, which in turn affects wound healing.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A dual-function digestive tract drainage and feeding tube includes an interface section, a dual-lumen imaging section, and a single-lumen imaging section. The interface section is connected to the dual-lumen imaging section via a dual-lumen tube, and the dual-lumen imaging section is connected to the single-lumen imaging section via a single-lumen tube. The dual-lumen tube includes a drainage chamber and a feeding chamber, with the feeding chamber located inside the drainage chamber and connected to the single-lumen tube.

[0006] The interface segment includes an enteral nutrition connector and a negative pressure suction connector. The enteral nutrition connector is connected to the feeding cavity, and the negative pressure suction connector is connected to the drainage cavity.

[0007] The dual-cavity imaging section includes an inner cavity and an outer cavity. The inner cavity is connected to the feeding cavity, and the outer cavity is located outside the inner cavity and connected to the drainage cavity. The surface of the outer cavity has several drainage holes. The outer cavity is covered by a support layer, and an anti-adhesion coating is provided on the outside of the support layer. The surface of the anti-adhesion coating has several through holes.

[0008] The single-lumen imaging segment is made of radiopaque thermoplastic polyurethane (TPU), which is inserted into the duodenum under the guidance of a gastroscopy to achieve deep drainage.

[0009] Preferably, the support layer is a medical-grade polyurethane foam with a thickness of 1-5 mm, which provides mechanical support and promotes granulation tissue growth.

[0010] Preferably, the anti-adhesion coating is an open-pore membrane layer or an open-pore silicone gel layer, and the anti-adhesion coating can reduce tissue adhesion.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] (1) The present application provides a dual-function digestive tract drainage and feeding tube, which includes an interface section, a dual-lumen imaging section and a single-lumen imaging section. The interface section is connected to the dual-lumen imaging section through a dual-lumen tube, and the dual-lumen imaging section is connected to the single-lumen imaging section through a single-lumen tube. The dual-lumen tube includes a drainage cavity and a feeding cavity. The drainage and feeding functions are designed in a coordinated manner. The two channels are independent and parallel and do not interfere with each other, which solves the problem of difficult nutrition supply in the drainage and feeding tube.

[0013] (2) The dual-cavity imaging section in this application includes an inner cavity and an outer cavity. Several drainage holes are provided on the surface of the outer cavity. A support layer is wrapped around the outside of the outer cavity. An anti-adhesion coating is provided on the outside of the support layer. Several through holes are uniformly provided on the surface of the anti-adhesion coating. The composite structure of the support layer and the anti-adhesion coating realizes the triple functions of support, drainage and anti-adhesion. It is not only structurally stable, but also optimizes the healing environment and reduces secondary damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a dual-function digestive tract drainage and feeding tube according to the present invention;

[0015] Figure 2 This is a cross-sectional view (AA) of a dual-function digestive tract drainage and feeding tube according to this utility model.

[0016] Figure 3 This is a diagram illustrating the usage of a dual-function digestive tract drainage and feeding tube according to this utility model.

[0017] In the diagram, 1-interface section, 2-dual-chamber developing section, 3-single-chamber developing section, 4-dual-chamber tube, 5-single-chamber tube.

[0018] 11-Enteral nutrition connector, 12-Negative pressure suction port, 21-Inner lumen, 22-Outer lumen, 23-Drainage hole, 24-Support layer, 25-Anti-adhesion coating. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] This utility model discloses a dual-function digestive tract drainage and feeding tube, such as... Figure 1 As shown, it includes an interface section, a dual-cavity developing section 2, and a single-cavity developing section 3. The interface section is connected to the dual-cavity developing section 2 through a dual-cavity tube 4. The dual-cavity developing section 2 is connected to the single-cavity developing section 3 through a single-cavity tube 5. The dual-cavity tube 4 includes a drainage cavity and a feeding cavity. The feeding cavity is located inside the drainage cavity and is connected to the single-cavity tube 5.

[0021] like Figure 1 As shown, the interface section includes an enteral nutrition connector 11 and a negative pressure suction port 12. The enteral nutrition connector 11 is connected to the feeding chamber. Preferably, the negative pressure suction port 12 is located below the enteral nutrition connector 11 and is connected to the drainage chamber. The standard enteral nutrition connector 11 is an ENFit connector, which is compatible with commercially available feeding equipment. The negative pressure suction port 12 is connected to the drainage chamber and is equipped with a regulating valve to control the negative pressure intensity (0 to -180 mmHg). The interface section is also provided with a contrast-enhancing marker ring to facilitate postoperative X-ray positioning.

[0022] like Figure 2 As shown, the dual-cavity imaging section 2 is a double-layer imaging TPU, including an inner cavity 21 and an outer cavity 22. The inner cavity 21 is connected to the feeding cavity, with an inner diameter of 0-6 mm, and can withstand nutrient solution infusion. The outer cavity 22 is located outside the inner cavity 21 and is connected to the drainage cavity. The surface of the outer cavity 22 has several densely spaced drainage holes 23. Preferably, the drainage holes 23 are evenly spaced. Preferably, the drainage holes 23 are crescent-shaped, with a diameter of 0-1 cm and a spacing of 0-2 cm. The outer cavity 22 is covered with a support layer 24. Preferably, the support layer 24 is a medical-grade polyurethane sponge with a thickness of 1-5 mm, which can provide mechanical support and promote granulation tissue growth. An anti-adhesion coating 25 is provided on the outside of the support layer 24. Preferably, the anti-adhesion coating 25 is an open-pore membrane layer or an open-pore silicone gel layer (thickness of 0.5-3 mm). The surface of the anti-adhesion coating 25 has several through holes. The anti-adhesion coating 25 can reduce tissue adhesion.

[0023] like Figure 1 As shown, the single-lumen imaging segment 3 is made of radiopaque thermoplastic polyurethane (TPU), with a diameter of 1-4 mm and a length of 20-80 cm. It is inserted into the duodenum under the guidance of a gastroscopy to achieve deep drainage. The radiopaqueness facilitates intraoperative positioning.

[0024] Working principle:

[0025] like Figure 1-3As shown, the distal single-lumen imaging segment 3 is inserted into the duodenum, and the mid-section double-lumen imaging segment 2 covers the wound. The negative pressure suction port 12 is connected to a negative pressure pump, and the wound exudate is continuously suctioned through the drainage hole 23 to reduce the concentration of local inflammatory factors. At the same time, the sponge compression force promotes fistula contraction. The enteral nutrition connector 11 infuses nutrient solution through the feeding cavity, which is delivered directly to the duodenum through the distal opening, bypassing the narrow or obstructed area. The silicone gel layer can naturally fall off as the tissue repairs after healing, reducing tube removal damage. The negative pressure intensity and feeding plan are dynamically adjusted according to the wound healing situation.

[0026] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A dual-function digestive tract drainage feeding tube, characterized in that: It includes an interface section, a dual-lumen developing section, and a single-lumen developing section. The interface section is connected to the dual-lumen developing section via a dual-lumen tube. The dual-lumen developing section is connected to the single-lumen developing section via a single-lumen tube. The dual-lumen tube includes a drainage chamber and a feeding chamber. The feeding chamber is located inside the drainage chamber and is connected to the single-lumen tube. The interface segment includes an enteral nutrition connector and a negative pressure suction connector. The enteral nutrition connector is connected to the feeding cavity, and the negative pressure suction connector is connected to the drainage cavity. The dual-cavity imaging section includes an inner cavity and an outer cavity. The inner cavity is connected to the feeding cavity, and the outer cavity is located outside the inner cavity and connected to the drainage cavity. The outer cavity surface has several drainage holes. The outer cavity is covered with a support layer, and the support layer is covered with an anti-adhesion coating. The surface of the anti-adhesion coating has several through holes.

2. The dual-function digestive tract drainage feeding tube according to claim 1, characterized in that: The support layer is medical-grade polyurethane foam with a thickness of 1-5mm.

3. The dual-function digestive tract drainage feeding tube according to claim 2, characterized in that: The anti-adhesion coating is an open-pore film layer or an open-pore silicone gel layer.

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