Super-smooth nasal feeding tube with hydrophilic coating

Abstract

The utility model provides an ultra-smooth nasal feeding tube with a hydrophilic coating, which belongs to the field of medical instruments and comprises a nasal feeding tube body, one end of the nasal feeding tube body is in a pointed cone shape, a hydrophilic component is arranged on one side of the nasal feeding tube body, and a fixing component is arranged outside the nasal feeding tube body. According to the hydrophilic nasal feeding tube, the hydrophilic assembly is arranged, so that the effect of supporting the nasal feeding tube body is achieved; before the nasal feeding tube is used, the nasal feeding tube body is placed in normal saline to be soaked for 30 seconds, the hydrophilic coating made of polyvinylpyrrolidone absorbs water and expands to form the hydrogel layer, when the nasal feeding tube is inserted into the nasal cavity and the throat of a patient, the formed hydrogel layer can greatly reduce the friction coefficient between the outer wall of the nasal feeding tube body and the nasal cavity and the throat of the patient, and discomfort of the patient is reduced; meanwhile, the supporting wire made of the nickel-titanium alloy can improve the stability of the nasal feeding tube body in the bending process, and the situation that the inner cavity of the nasal feeding tube body is completely closed when the patient moves is avoided.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and more specifically, to an ultra-slippery nasal feeding tube with a hydrophilic coating. Background Technology

[0002] Nasogastric tubes are commonly used medical devices in clinical practice to provide nutritional support or drug delivery to patients who are unable to eat orally. Currently, there is still considerable room for improvement in terms of insertion smoothness, patient comfort, and ease of operation of nasogastric tubes on the market.

[0003] A search revealed that Chinese Patent Publication No. CN204972314U discloses "an ultra-slippery nasogastric tube, comprising a tube connector, the output end of which is connected to a catheter, the input end of which has an injection port for injecting nutrient solution, a flexibly connected cap to the tube connector for sealing the injection port, the outer surface of the portion of the catheter inserted into the human body coated with staggered anesthetic coatings and an ultra-slippery coating made of hydrophilic material, and the end of the catheter having a flexible tip made of elastic material with an infusion hole for direct infusion of nutrient solution, the flexible tip having a tapered structure and a small front end, which can greatly reduce the patient's pain and facilitate catheter insertion," but it still has the following drawbacks:

[0004] When using this nasogastric tube, because the tube is flexible, it will bend and close the lumen when the patient moves, which will prevent the nutrient solution from being injected and require the nasogastric tube to be removed and reinserted, which can easily cause discomfort to the patient. To address this, an ultra-slippery nasogastric tube with a hydrophilic coating is proposed. Utility Model Content

[0005] The purpose of this invention is to address the current problem where, because the nasogastric tube is flexible, it bends and closes its lumen when the patient moves, preventing the infusion of nutrient solution and requiring the tube to be removed and reinserted, which can easily cause discomfort to the patient.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] An ultra-slippery nasal feeding tube with a hydrophilic coating was developed to improve the aforementioned problems.

[0008] The present invention is as follows: it includes a nasogastric tube body, one end of which is tapered, a hydrophilic component is provided on one side of the nasogastric tube body, and a fixing component is provided on the outside of the nasogastric tube body.

[0009] The hydrophilic component includes a base layer, a support wire, and a hydrophilic coating. The base layer is disposed on the outer wall of the nasogastric tube body and is made of medical-grade polyurethane. The support wire is disposed on the outer wall of the base layer and is distributed in a spiral shape on the outer wall of the base layer. The support wire is made of nickel-titanium alloy. The hydrophilic coating is disposed on the outer wall of the base layer and wraps the support wire. The hydrophilic coating is made of polyvinylpyrrolidone.

[0010] As a preferred technical solution of this utility model, the fixing component includes a fixing sleeve, an extension strip, and a reinforcing plate. The fixing sleeve is slidably connected to the outer wall of the nasogastric tube body. The two extension strips are respectively fixedly connected to both sides of the fixing sleeve. The reinforcing plate is disposed on the inner wall of the fixing sleeve. The fixing sleeve slides along the length direction of the nasogastric tube body. The fixing sleeve and the extension strip are both made of skin-friendly and flexible material.

[0011] As a preferred technical solution of this utility model, an external threaded sleeve is fixedly connected to the outer wall of the nasogastric tube body, and a guide head is threadedly connected to the outer wall of the external threaded sleeve. The guide head is funnel-shaped.

[0012] As a preferred technical solution of this utility model, the inner wall of the guide head is provided with a hollow soft pad, the top of the hollow soft pad is provided with a pull plate, the bottom of the pull plate is fixedly connected with a steel wire, and the bottom of the steel wire extends into the interior of the nasogastric tube body.

[0013] As a preferred technical solution of this utility model, the outer wall of the guide head is provided with a soft cap, and a retaining pad is provided on one side of the soft cap.

[0014] As a preferred technical solution of this utility model, the inner wall of the nasogastric tube body is provided with multiple side holes, each of which penetrates the base layer and the hydrophilic coating, and the multiple side holes are circumferentially distributed along the axial direction of the nasogastric tube body.

[0015] As a preferred technical solution of this utility model, the outer wall of the hydrophilic coating is provided with scale lines, which are distributed along the length direction of the nasogastric tube body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. The hydrophilic components provide support for the nasogastric tube. Before use, the nasogastric tube is soaked in saline solution for 30 seconds, allowing the hydrophilic coating of polyvinylpyrrolidone to absorb water and swell to form a hydrogel layer. When inserted into the patient's nasal cavity and throat, the hydrogel layer significantly reduces the coefficient of friction between the outer wall of the nasogastric tube and the patient's nasal cavity and throat, reducing patient discomfort. At the same time, the support wire made of nickel-titanium alloy increases the stability of the nasogastric tube when bent, preventing the inner lumen of the nasogastric tube from completely closing when the patient moves.

[0018] 2. Through the designed fixing components, the skin-friendly and flexible fixing sleeve and extension strip can slide on the outer wall of the nasogastric tube body. When it is necessary to fix the nasogastric tube body to the patient's cheek, the skin-friendly patch can be first attached to the fixing sleeve and extension strip, and then the patch together with the fixing sleeve and extension strip can be attached to the patient's face to prevent the patch from being directly attached to the face and easily compressing the nasogastric tube body. The fixing sleeve does not restrict the sliding of the nasogastric tube body, and the reinforcing plate can improve the stability of the inner wall of the fixing sleeve and prevent external force from compressing the fixing sleeve and causing blockage of the nasogastric tube body. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of an ultra-smooth nasal feeding tube with a hydrophilic coating provided by this utility model;

[0020] Figure 2 A right-side cross-sectional view of an ultra-slippery nasal feeding tube with a hydrophilic coating provided for this utility model;

[0021] Figure 3 This invention provides an ultra-smooth nasal feeding tube with a hydrophilic coating. Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 A cross-sectional structural diagram of the side hole in an ultra-smooth nasal feeding tube with a hydrophilic coating provided for this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of a fixation component in an ultra-slippery nasal feeding tube with a hydrophilic coating, which is provided by this utility model.

[0024] The diagram shows: 1. Nasogastric tube body; 2. Hydrophilic component; 3. Fixing component; 201. Base layer; 202. Support wire; 203. Hydrophilic coating; 301. Fixing sleeve; 302. Extension strip; 303. Reinforcing plate; 4. External threaded sleeve; 5. Guide head; 6. Hollow soft pad; 7. Pull plate; 8. Steel wire; 9. Soft cap; 10. Clip; 11. Side hole; 12. Scale line. Detailed Implementation

[0025] 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.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1-5 As shown, this embodiment proposes an ultra-slippery nasal feeding tube with a hydrophilic coating, including a nasal feeding tube body 1, one end of the nasal feeding tube body 1 is a pointed cone shape, a hydrophilic component 2 is provided on one side of the nasal feeding tube body 1, and a fixing component 3 is provided on the outside of the nasal feeding tube body 1.

[0030] like Figure 3 As shown, the hydrophilic component 2 includes a base layer 201, a support wire 202, and a hydrophilic coating 203. The base layer 201 is disposed on the outer wall of the nasogastric tube body 1. The base layer 201 is made of medical-grade polyurethane. The support wire 202 is disposed on the outer wall of the base layer 201. The support wire 202 is distributed in a spiral shape on the outer wall of the base layer 201 and is made of nickel-titanium alloy. The hydrophilic coating 203 is disposed on the outer wall of the base layer 201 and wraps the support wire 202. The hydrophilic coating 203 is made of polyvinylpyrrolidone. During use, the nasogastric tube body 1 is immersed in physiological saline for 30 seconds, allowing the hydrophilic coating 203 made of polyvinylpyrrolidone to absorb water and swell to form a hydrogel layer. The pointed, conical end of the nasogastric tube body 1 is then inserted into the patient's nasal cavity and pharynx. The hydrogel layer formed by the hydrophilic coating 203 can significantly reduce the coefficient of friction between the outer wall of the nasogastric tube body 1 and the patient's nasal cavity and pharynx, reducing patient discomfort. Because the support wires 202 are spirally distributed on the outer wall of the base layer 201, they will cause the outer wall of the nasogastric tube body 1 to form a hydrogel layer. The uniform wave pattern changes the contact pressure between the outer wall of the nasogastric tube body 1 and the nasal cavity and esophageal mucosa from "surface pressure" to "point pressure", reducing the pressure per unit area. Furthermore, the gaps formed between the waves allow esophageal mucosal secretions to flow, avoiding tube removal damage caused by dryness and adhesion. The support wire 202, made of nickel-titanium alloy, has excellent elasticity, which can increase the stability of the nasogastric tube body 1 when it is bent without affecting the insertion of the nasogastric tube body 1, and prevent the inner lumen of the nasogastric tube body 1 from completely closing when the patient moves.

[0031] like Figure 5As shown, the fixing component 3 includes a fixing sleeve 301, an extension strip 302, and a reinforcing plate 303. The fixing sleeve 301 is slidably connected to the outer wall of the nasogastric tube body 1. The two extension strips 302 are respectively fixedly connected to both sides of the fixing sleeve 301. The reinforcing plate 303 is disposed on the inner wall of the fixing sleeve 301. The fixing sleeve 301 slides along the length of the nasogastric tube body 1. Both the fixing sleeve 301 and the extension strip 302 are made of skin-friendly and flexible material. After the insertion is completed, the medical staff will attach the nasogastric tube body 1 to the patient's face using a skin-friendly patch. At this time, the skin-friendly patch can be first attached to the fixing sleeve 301 and the extension strip 302, and then the patch together with the fixing sleeve 301 and the extension strip 302 can be attached to the patient's face. The reinforcing plate 303 can prevent the patch from being directly attached to the face and easily causing compression of the nasogastric tube body 1.

[0032] like Figure 2 As shown, an externally threaded sleeve 4 is fixedly connected to the outer wall of the nasogastric tube body 1. A guide head 5 is threadedly connected to the outer wall of the externally threaded sleeve 4. The guide head 5 is funnel-shaped. The funnel-shaped guide head 5 facilitates the injection of nutrient solution by the patient. When used in conjunction with the externally threaded sleeve 4, it allows the patient to replace the guide head 5 without removing the nasogastric tube body 1, thus avoiding infection.

[0033] like Figure 2 As shown, the inner wall of the guide head 5 is provided with a hollow soft pad 6, and a pull plate 7 is provided on the top of the hollow soft pad 6. A steel wire 8 is fixedly connected to the bottom of the pull plate 7, and the bottom of the steel wire 8 extends into the interior of the nasogastric tube body 1. Before inserting the nasogastric tube body 1, the pull plate 7 can be placed on the hollow soft pad 6, and the steel wire 8 can be extended into the interior of the nasogastric tube body 1. During insertion, the steel wire 8 can further prevent the nasogastric tube body 1 from bending when inserted into the patient's body, making it easier for external staff to guide it.

[0034] like Figure 2 As shown, a soft cap 9 is provided on the outer wall of the guide head 5, and a retaining pad 10 is provided on one side of the soft cap 9. When the guide head 5 is not in use, the soft cap 9 can be pulled to insert the retaining pad 10 into the guide head 5 to seal the guide head 5 and prevent external debris from entering the patient's body through the nasogastric tube body 1.

[0035] like Figure 4 As shown, the inner wall of the nasogastric tube body 1 has multiple side holes 11 that penetrate the base layer 201 and the hydrophilic coating 203. The multiple side holes 11 are circumferentially distributed along the axial direction of the nasogastric tube body 1. The multiple side holes 11 can disperse the feeding pressure and prevent the injected nutrient solution from being discharged through the tip of the nasogastric tube body 1.

[0036] like Figure 1As shown, the outer wall of the hydrophilic coating 203 is provided with scale lines 12, which are distributed along the length of the nasogastric tube body 1. This allows external medical personnel to easily check the length of the inserted nasogastric tube body 1.

[0037] Specifically, when using this super-slippery nasogastric tube with a hydrophilic coating: medical personnel can replace the nasogastric tube body 1 with different lengths according to the patient's condition; before use, the nasogastric tube body 1 is soaked in physiological saline for 30 seconds, allowing the hydrophilic coating 203 made of polyvinylpyrrolidone to absorb water and swell to form a hydrogel layer. The pointed, conical end of the nasogastric tube body 1 is then inserted into the patient's nasal cavity and pharynx. The hydrogel layer formed by the hydrophilic coating 203 can significantly reduce the coefficient of friction between the outer wall of the nasogastric tube body 1 and the patient's nasal cavity and pharynx, reducing patient discomfort. Meanwhile, the nickel-titanium alloy support wire 202 has excellent elasticity, which can increase the stability of the nasogastric tube body 1 when bent without affecting insertion, preventing the patient from... When any movement is made, the inner cavity of the nasogastric tube body 1 is completely closed. Then, the pull plate 7 is placed on the hollow soft pad 6, and the steel wire 8 extends into the interior of the nasogastric tube body 1 to further prevent the nasogastric tube body 1 from bending when inserted into the patient's body, making it easier for external staff to guide the insertion. After the insertion is completed, a skin-friendly patch is attached to the fixing sleeve 301 and the extension strip 302. Then, the patch, together with the fixing sleeve 301 and the extension strip 302, is attached to the patient's face. The reinforcing plate 303 can prevent the patch from being directly attached to the face and causing pressure on the nasogastric tube body 1. The guide head 5 is screwed onto the outer wall of the external threaded sleeve 4, making it easy for the patient to replace the guide head 5 and inject the nutrient solution without removing the nasogastric tube body 1.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A super-slippery nasal feeding tube with a hydrophilic coating, comprising a nasal feeding tube body (1), characterized in that, One end of the nasogastric tube body (1) is cone-shaped, a hydrophilic component (2) is provided on one side of the nasogastric tube body (1), and a fixing component (3) is provided on the outside of the nasogastric tube body (1). The hydrophilic component (2) includes a base layer (201), a support wire (202), and a hydrophilic coating (203). The base layer (201) is disposed on the outer wall of the nasogastric tube body (1). The base layer (201) is made of medical-grade polyurethane. The support wire (202) is disposed on the outer wall of the base layer (201). The support wire (202) is spirally distributed on the outer wall of the base layer (201) and is made of nickel-titanium alloy. The hydrophilic coating (203) is disposed on the outer wall of the base layer (201) and wraps the support wire (202). The hydrophilic coating (203) is made of polyvinylpyrrolidone.

2. The super-slippery nasal feeding tube with a hydrophilic coating according to claim 1, characterized in that, The fixing component (3) includes a fixing sleeve (301), an extension strip (302), and a reinforcing plate (303). The fixing sleeve (301) is slidably connected to the outer wall of the nasogastric tube body (1). The two extension strips (302) are respectively fixedly connected to both sides of the fixing sleeve (301). The reinforcing plate (303) is disposed on the inner wall of the fixing sleeve (301). The fixing sleeve (301) slides along the length direction of the nasogastric tube body (1). The fixing sleeve (301) and the extension strip (302) are both made of skin-friendly and flexible material.

3. The super-smooth nasal feeding tube with a hydrophilic coating according to claim 1, characterized in that, The outer wall of the nasogastric tube body (1) is fixedly connected to an external threaded sleeve (4), and the outer wall of the external threaded sleeve (4) is threadedly connected to a guide head (5), which is in the shape of a bucket.

4. The super-smooth nasal feeding tube with a hydrophilic coating according to claim 3, characterized in that, The inner wall of the guide head (5) is provided with a hollow soft pad (6), the top of the hollow soft pad (6) is provided with a pull plate (7), the bottom of the pull plate (7) is fixedly connected with a steel wire (8), and the bottom of the steel wire (8) extends into the interior of the nasogastric tube body (1).

5. The super-smooth nasal feeding tube with a hydrophilic coating according to claim 3, characterized in that, The outer wall of the guide head (5) is provided with a soft cap (9), and a pad (10) is provided on one side of the soft cap (9).

6. The super-smooth nasal feeding tube with a hydrophilic coating according to claim 1, characterized in that, The inner wall of the nasogastric tube body (1) is provided with a plurality of side holes (11), which penetrate the base layer (201) and the hydrophilic coating (203). The plurality of side holes (11) are circumferentially distributed along the axial direction of the nasogastric tube body (1).

7. The super-smooth nasal feeding tube with a hydrophilic coating according to claim 1, characterized in that, The outer wall of the hydrophilic coating (203) is provided with scale lines (12), which are distributed along the length direction of the nasogastric tube body (1).

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