Mask suitable for nasal feeding patient
By designing an innovative limiting structure, the problem of nasogastric tube swaying when patients wear oxygen masks was solved, achieving stable limiting of the nasogastric tube and oxygen sealing, thus improving patient comfort.
Patent Information
- Application Number
- CN202422995346.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-05
AI Technical Summary
When patients are fed through a nasogastric tube, the tube tends to move around when wearing a traditional oxygen mask, leading to problems such as oxygen leakage and facial pressure marks. Existing masks with nasogastric tube openings cannot effectively limit its movement.
A limiting component including a fixed ring, a rotating ring, an elastic element, an inflatable air bladder, and an air reservoir bladder was designed. The nasogastric tube is stably limited by a threaded connection and air bladder inflation. The cooperation of the elastic element and the air bladder prevents the nasogastric tube from shaking.
This achieves stable positioning of the nasogastric tube, reduces discomfort caused by tube movement, and ensures oxygen sealing and patient comfort.
Smart Images

Figure CN223774064U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a face mask suitable for use by patients receiving nasogastric feeding. Background Technology
[0002] Nasogastric feeding is a special procedure in which a feeding tube is inserted into the esophagus through the nasal cavity. The tube is manually pressurized and a piston is applied to deliver water and food into the patient's stomach. This helps patients who cannot swallow independently to maintain their metabolism, weight, and nutrition.
[0003] When patients receiving nasogastric feeding wear traditional oxygen masks, the feeding tube is positioned between the edge of the mask and the face, which can easily cause problems such as oxygen leakage and facial pressure marks. Some existing oxygen masks have been developed with nasogastric tube openings, allowing patients to receive nasogastric feeding while wearing the mask. However, these masks still have some shortcomings, such as the inability to control the position of the feeding tube, and the feeding tube being prone to movement, causing discomfort to the patient. Summary of the Invention
[0004] In order to overcome the shortcomings of the prior art, the present invention provides a face mask suitable for patients who are fed through a nasogastric tube.
[0005] Technical solution: A mask suitable for nasogastric feeding patients, comprising a mask body and a limiting member. The mask body has an installation hole, and the limiting member is disposed in the installation hole. The limiting member is a cylindrical structure with open ends. The limiting member is used to limit the nasogastric tube passing through its interior. The limiting member includes a fixing ring, a rotating ring, and multiple elastic members. The fixing ring is fixedly connected to the installation hole, and the rotating ring is threadedly connected to the fixing ring. A connecting ring is fixedly connected to the deepest part of the fixing ring. Multiple elastic members are circumferentially and equidistantly distributed on the connecting ring. When the outer ends of the multiple elastic members converge inward, they can resist and limit the nasogastric tube.
[0006] Furthermore, the outer ends of the multiple elastic elements and the end of the rotating ring near the fixed ring are all provided with inclined surfaces. When the rotating ring rotates to the deep part of the fixed ring, the inclined surfaces of the rotating ring and the inclined surfaces of the multiple elastic elements come into contact with each other, causing the outer ends of the multiple elastic elements to converge inward.
[0007] Furthermore, the limiting component also includes an inflatable airbag and a reservoir airbag. Both the inflatable airbag and the reservoir airbag are annular. Both ends of the fixing ring have receiving grooves, which are respectively matched with the inflatable airbag and the reservoir airbag. The inflatable airbag and the reservoir airbag are located in the two receiving grooves respectively. An air supply tube is connected between the inflatable airbag and the reservoir airbag. The air supply tube is embedded in the fixing ring. When the reservoir airbag is squeezed, it will transfer the gas inside it to the inflatable airbag through the air supply tube, causing the inflatable airbag to expand and block the gap between the nasogastric tube and the fixing ring.
[0008] Furthermore, a compression ring is fixedly connected to the rotating ring, and the compression ring matches the receiving groove where the air storage bag is located. The compression ring is used to compress the air storage bag.
[0009] Furthermore, multiple elastic components and inflatable airbags are made of medical-grade high-elasticity materials.
[0010] Furthermore, the outer surface of the rotating ring is provided with anti-slip texture.
[0011] Beneficial effects: This utility model, through its innovative limiting component design, is easy to operate and achieves stable limiting of the nasogastric tube, reducing discomfort caused by the nasogastric tube shaking. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Figure 2 This is a schematic diagram showing the installation of the limiting component and the mask body of this utility model.
[0014] Figure 3 This is a cross-sectional view of the internal structure of the limiting component of this utility model.
[0015] Figure 4 This is an exploded three-dimensional view of the limiting component of this utility model.
[0016] Figure 5 This is a cross-sectional view of the internal structure of the rotating ring of this utility model.
[0017] Figure 6 This is a cross-sectional view of the internal structure of the fixing ring of this utility model.
[0018] Wherein: 1-mask body, 11-mounting hole, 2-limiting component, 21-fixing ring, 211-accommodating groove, 22-rotating ring, 221-compression ring, 222-anti-slip texture, 23-elastic component, 24-connecting ring, 25-inflating airbag, 26-air storage airbag, 3-air delivery pipe, 4-sloping surface. Detailed Implementation
[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0020] Please see Figures 1-4A face mask suitable for nasogastric feeding patients includes a face mask body 1 and a limiting member 2. In this embodiment, the face mask body is an oxygen face mask with an oxygen tube and an exhaust port. The face mask body 1 has a mounting hole 11, and the limiting member 2 is disposed in the mounting hole 11. The limiting member 2 is a cylindrical structure with openings at both ends. The limiting member 2 is used to limit the nasogastric tube passing through its interior. The limiting member 2 includes a fixing ring 21, a rotating ring 22, and multiple elastic members 23. The fixing ring 21 is fixedly connected to the mounting hole 11, and the rotating ring 22... The outer diameter of the rotating ring 22 is smaller than the inner diameter of the fixed ring 21. The outer side of the rotating ring 22 is threaded to the inner side of the fixed ring 21. The outer surface of the rotating ring 22 is provided with anti-slip texture 222 to facilitate user operation. The deepest part of the fixed ring 21 is fixed with a connecting ring 24. Multiple elastic elements 23 are circumferentially distributed on the connecting ring 24. When the outer ends of the multiple elastic elements 23 converge inward, they can resist and limit the feeding tube. The multiple elastic elements 23 are all made of medical-grade high-elasticity silicone material to ensure hygiene in direct contact with the feeding tube.
[0021] Please see Figure 3 and Figure 4 The outer diameter of the assembly of multiple elastic elements 23 is smaller than the inner diameter of the rotating ring 22. The outer ends of the multiple elastic elements 23 and the end of the rotating ring 22 near the fixed ring 21 are all provided with inclined surfaces 4. When the rotating ring 22 rotates to the deep part of the fixed ring 21, the inclined surfaces 4 of the rotating ring 22 and the inclined surfaces 4 of the multiple elastic elements 23 come into contact, causing the outer ends of the multiple elastic elements 23 to converge inward.
[0022] Please see Figure 3 , Figure 4 and Figure 6 The limiting component 2 also includes an inflatable airbag 25 and a storage airbag 26. Both the inflatable airbag 25 and the storage airbag 26 are annular. Both ends of the fixing ring 21 are provided with receiving grooves 211. The inflatable airbag 25 and the storage airbag 26 are respectively fixed in the two receiving grooves 211. The receiving groove 211 where the storage airbag 26 is located is opened along the axial direction, so that the fixing ring 21 has a double-layer annular structure. The receiving groove 211 where the inflatable airbag 25 is located is opened circumferentially around the axis, so that the inflatable airbag 25 can expand towards the axis. An air supply tube 3 is connected between the inflatable airbag 25 and the storage airbag 26. The air supply tube 3 is embedded in the fixing ring 21. When the storage airbag 26 is squeezed, it will transfer the gas inside to the inflatable airbag 25 through the air supply tube 3, so that the inflatable airbag 25 expands and blocks the gap between the nasogastric tube and the fixing ring 21. The inflatable airbag 25 is made of medical-grade high-elasticity rubber material to ensure hygiene in direct contact with the nasogastric tube.
[0023] Please see Figure 3 and Figure 5A compression ring 221 is fixedly connected to the rotating ring 22. The compression ring 221 is located on the outside of the thread of the rotating ring 22. The compression ring 221 is slidably connected to the receiving groove 211 where the air storage bag 26 is located. When the rotating ring 22 rotates into the fixed ring 21, the compression ring 221 will simultaneously extend into the corresponding receiving groove 211 to compress the air storage bag 26.
[0024] Working principle: Initially, the rotating ring 22 is not rotated deep into the fixed ring 21, and the multiple elastic elements 23 naturally expand. The air reservoir 26 is filled with gas, and the inflatable air bladder 25 is in a naturally uninflated state. When in use, the mask body 1 is worn on the patient's face, the nasogastric tube is passed through the limiting member 2 and adjusted to the appropriate position. Then, the rotating ring 22 is rotated deep into the fixed ring 21. During this process, the inclined surface 4 of the rotating ring 22 abuts against the inclined surface 4 of all the elastic elements 23, thereby causing the outer ends of all the elastic elements 23 to converge inward, thus abutting and limiting the nasogastric tube. At the same time, the squeezing ring 221 will squeeze the air reservoir 26, causing the gas in the air reservoir 26 to be transferred to the inflatable air bladder 25 through the gas delivery tube 3. The inflatable air bladder 25 inflates, thereby blocking the gap between the nasogastric tube and the fixed ring 21, effectively preventing air leakage.
[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A face mask suitable for use by patients receiving nasogastric feeding, comprising a face mask body (1), characterized in that: It also includes a limiting member (2). The mask body (1) has an installation hole (11). The limiting member (2) is set in the installation hole (11). The limiting member (2) is a cylindrical structure with open ends. The limiting member (2) is used to limit the nasogastric tube passing through it. The limiting member (2) includes a fixing ring (21), a rotating ring (22) and multiple elastic members (23). The fixing ring (21) is fixed in the installation hole (11). The rotating ring (22) is threaded to the fixing ring (21). The deepest part of the fixing ring (21) is fixed with a connecting ring (24). Multiple elastic members (23) are circumferentially distributed on the connecting ring (24). When the outer ends of multiple elastic members (23) converge inward, they can resist and limit the nasogastric tube.
2. A face mask suitable for use in patients requiring nasogastric feeding as described in claim 1, characterized in that: The outer ends of the multiple elastic elements (23) and the end of the rotating ring (22) near the fixed ring (21) are all provided with inclined surfaces (4). When the rotating ring (22) rotates to the deep part of the fixed ring (21), the inclined surface (4) of the rotating ring (22) and the inclined surface (4) of the multiple elastic elements (23) abut against each other, causing the outer ends of the multiple elastic elements (23) to converge inward.
3. A face mask suitable for nasogastric feeding patients as described in claim 2, characterized in that: The limiting member (2) also includes an inflatable airbag (25) and an air reservoir (26). Both the inflatable airbag (25) and the air reservoir (26) are annular. Both ends of the fixing ring (21) are provided with receiving grooves (211). The two receiving grooves (211) are respectively matched with the inflatable airbag (25) and the air reservoir (26). The inflatable airbag (25) and the air reservoir (26) are respectively located in the two receiving grooves (211). An air supply tube (3) is connected between the inflatable airbag (25) and the air reservoir (26). The air supply tube (3) is embedded in the fixing ring (21). When the air reservoir (26) is squeezed, it will transfer the gas inside it to the inflatable airbag (25) through the air supply tube (3), so that the inflatable airbag (25) expands and blocks the gap between the nasogastric tube and the fixing ring (21).
4. A face mask suitable for nasogastric feeding patients as described in claim 3, characterized in that: A compression ring (221) is fixedly connected to the rotating ring (22). The compression ring (221) matches the receiving groove (211) where the air storage bag (26) is located. The compression ring (221) is used to compress the air storage bag (26).
5. A face mask suitable for use in patients requiring nasogastric feeding as described in claim 4, characterized in that: The multiple elastic elements (23) and the inflatable airbag (25) are all made of medical-grade high-elasticity material.
6. A face mask suitable for use in patients requiring nasogastric feeding as described in claim 5, characterized in that: The outer surface of the rotating ring (22) is provided with anti-slip texture (222).