Sealing mask for patient with indwelling nasogastric tube

Abstract

The invention belongs to the technical field of medical auxiliary instruments. In order to solve the problem that an existing sealing mask for a nasogastric tube indwelling patient is poor in use effect, the sealing mask for the nasogastric tube indwelling patient comprises a sealing mask body, a nasogastric tube connecting cylinder and a sealing mechanism arranged on the nasogastric tube connecting cylinder. The gap between the inner wall of the nasogastric tube connecting cylinder and the outer wall of the nasogastric tube can be sealed through the sealing mechanism, oxygen leakage is prevented, and the oxygen uptake effect of a patient is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical auxiliary equipment, and in particular relates to a sealing mask for patients with indwelling nasogastric tubes. Background Art

[0002] During medical treatment, some patients need to use a nasogastric tube, which is inserted through the nostrils, passes through the pharynx, and reaches the stomach through the esophagus. It is mostly used to extract gastric juice, but can also be used to inject liquid into the stomach to provide the patient with necessary food and nutrition. Generally, when a patient receives general anesthesia, the anesthesiologist injects anesthetic induction drugs into the patient's body, and the patient gradually loses respiratory function. The anesthesiologist needs to fasten the oxygen mask connected to the ventilator to the patient's face to assist the patient's breathing under anesthesia. However, when a patient with a nasogastric tube receives general anesthesia, the nasogastric tube will affect the tightness of the anesthesia mask and the patient's face during the anesthesia induction phase, resulting in air leakage, making it impossible for the ventilator to provide enough oxygen to the patient's lungs, and the patient's blood oxygen level cannot reach a satisfactory level.

[0003] The patent with publication number CN215135373U discloses an oxygen mask for a nasogastric tube, comprising: an oxygen mask, an oxygen tube interface, a nasogastric tube indwelling port, a port buckle cover, a sealing plug tongue, and a connecting rib. The oxygen mask is provided with an oxygen tube interface near the center of the lower end corresponding to the nostril, and a nasogastric tube indwelling port is provided on the side near the oxygen tube interface. The nasogastric tube indwelling port is buckled with a port buckle cover, and a sealing plug tongue is integrally provided on the inner side surface of the port buckle cover. The sealing plug tongue is tightly buckled and sealed with the inner side wall of the nasogastric tube indwelling port, and a connecting rib is integrally connected to the upper side or one side edge of the port buckle cover, and the other end of the connecting rib is integrally connected to the outer wall of one side of the nasogastric tube indwelling port. When in use, a nasogastric tube indwelling port is integrally provided on one side of the oxygen tube interface, and then a indwelling port buckle cover is provided on the nasogastric tube indwelling port, and a truncated cone-shaped sealing plug tongue is integrally provided on the inner side surface of the indwelling port buckle cover, and finally a connecting rib is provided, and the connecting rib is integrally provided on the upper side surface or the outer edge of the indwelling port buckle cover, and the other end of the connecting rib is integrally provided on the outer wall of one side of the nasogastric tube indwelling port, and then the indwelling port buckle cover is buckled and connected to the nasogastric tube indwelling port.

[0004] The above technical solution provides a nasogastric tube retention port and a retention port buckle cover so that when the patient needs to wear a nasogastric tube, the retention port buckle cover is opened to allow the nasogastric tube to pass through. However, when the patient is undergoing oxygen inhalation and nasogastric tube intubation at the same time, oxygen will leak from the gap between the nasogastric tube retention port and the nasogastric tube, causing oxygen leakage, thereby affecting the oxygen inhalation effect. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problem of poor use effect of the existing sealing mask used for patients with indwelling nasogastric tubes.

[0006] To achieve the above objectives, the present invention employs the following technical approach: providing a sealing mask for patients with an indwelling nasogastric tube. The sealing mask comprises a sealing mask body, a nasogastric tube connecting tube, and a sealing mechanism disposed at the end of the nasogastric tube connecting tube. The sealing mechanism seals the gap between the inner wall of the nasogastric tube connecting tube and the outer wall of the nasogastric tube, preventing oxygen leakage and ensuring effective oxygen uptake by the patient.

[0007] In addition, the sealing mask body provided by the present invention is also provided with a side nasogastric tube connecting tube and a movable door assembly arranged at the side nasogastric tube connecting tube, which can fix the nasogastric tube that has been worn, and is suitable for patients who need to insert a nasogastric tube before inhaling oxygen.

[0008] Based on the above technical ideas, the technical solution adopted by the present invention is: A sealing mask for a patient with an indwelling nasogastric tube comprises a sealing mask body, which is provided with: The nasogastric tube connecting tube comprises a cross-shaped through hole and an annular groove is provided on the outer side of the nasogastric tube connecting tube; The sealing mechanism is connected to the nasogastric tube connecting tube.

[0009] In order to achieve the purpose of sealing the nasogastric tube and the inner wall of the nasogastric tube connecting tube while preventing the nasogastric tube from being excessively squeezed and closed, in the above technical solution, as a preferred embodiment, the sealing mechanism includes: The expansion component is slidably connected to the nasogastric tube connecting tube; A plurality of first air bags are respectively arranged in the annular grooves; The second airbag is disposed in the cross-shaped through hole and is communicated with each of the first airbags.

[0010] In order to prevent oxygen leakage from the sealed mask when the patient is not intubated with a nasogastric tube, the above technical solution is further limited to the following: the expansion assembly includes a plurality of expansion units; each expansion unit includes: An arc-shaped plate is disposed in the annular groove; The triangular sealing plate is arranged in the cross-shaped through hole and is perpendicular to the arc plate; One end of the connecting rod is connected to the arc plate, and the other end passes through the nasogastric tube connecting tube and is connected to the triangular sealing plate.

[0011] In order to further improve the sealing effect of the nasogastric tube connecting tube, the above technical solution is further limited, and the sealing mechanism also includes an auxiliary sealing component; the auxiliary sealing component includes: The adjusting knob is threadedly connected to the nasogastric tube connecting tube; The squeezer is arranged in the cross-shaped through hole and is located between the adjusting knob and the second air bag.

[0012] In order to improve the smoothness of the extruder in the process of extruding the second airbag, the above technical solution is further limited to include: a first annular plate, the upper end of which is in contact with the bottom end of the adjusting knob; A plurality of balls are located below the first annular plate; The second annular plate is located between the plurality of balls and the first airbag, and a slideway is provided on the second annular plate for facilitating the rolling of the balls.

[0013] In order to achieve the purpose of returning the expansion component to its initial position after use, the above technical solution is further limited in that a reset elastic ring is also provided on the outside of the expansion component.

[0014] In order to avoid the situation where the patient who inserts a nasogastric tube first and then inhales oxygen has the tube removed during use, the above technical solution is further limited, and a side nasogastric tube connecting groove for fixing the nasogastric tube and a movable door assembly are provided on the side nasogastric tube connecting groove.

[0015] In order to facilitate the fixation of the nasogastric tube, the above technical solution is further limited, and the movable door assembly includes: Two first sliders are symmetrically arranged on both sides of the lateral nasogastric tube connecting groove, and each first slider is connected to the lateral nasogastric tube connecting groove through a first elastic member; each first slider has a square groove therein; The two second sliders are respectively arranged in the corresponding square grooves, and one end of each second slider is connected to the inner wall of the square groove through the second elastic member, and the other end is provided with a sealing member.

[0016] In order to improve the flexibility of the overall device when used, the above technical solution is further limited in that a suction tube socket is also provided on the mask body. Beneficial effects

[0017] 1. The present invention can seal the gap between the nasogastric tube and the nasogastric tube connecting tube through the combined design of the nasogastric tube connecting tube and the sealing mechanism, thereby preventing oxygen leakage and ensuring the patient's oxygen inhalation effect.

[0018] 2. The present invention uses a combined design of the second airbag and the expansion component to automatically seal the gap between the nasogastric tube and the nasogastric tube connecting tube when the nasogastric tube is inserted into the expansion component. It is simple to operate and easy to use. The second airbag can seal nasogastric tubes of various outer diameters without excessively squeezing the nasogastric tube, thereby ensuring the normal use of the nasogastric tube.

[0019] 3. The present invention can further squeeze the second airbag through the combined design of the second airbag, the adjustment knob and the squeezer, so that the side of the second airbag can further fit the outer wall of the nasogastric tube, thereby further improving the sealing effect of the sealing mechanism.

[0020] 4. The sealing mask body provided by the present invention is also provided with a side nasogastric tube connection groove and a movable door assembly. In actual use, the device provided by the present invention is not only suitable for patients who need to inhale oxygen first and then insert a nasogastric tube, but also suitable for patients who need to insert a nasogastric tube first and then inhale oxygen. That is, patients who need to insert a nasogastric tube first and then inhale oxygen do not need to pull out the nasogastric tube and then wear the sealing mask when using it. It is easy to use and has strong practicality.

[0021] 5. The sealing mask provided by the present invention is also provided with a sputum suction tube socket so as to be connected to an external negative pressure sputum suction device, which is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 A schematic structural diagram of a sealing mask for a patient with an indwelling nasogastric tube provided in Example 1 of the present invention; Figure 2 for Figure 1 A schematic structural diagram of the device shown from another perspective; Figure 3 for Figure 1 A schematic structural diagram of the device shown from another perspective; Figure 4 for Figure 1 a left side view of the device shown; Figure 5 for Figure 4 a half-section view of the device shown; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 Schematic diagram of the structure of the sealing component; Figure 9 for Figure 8 a front view of the device shown; Figure 10 A schematic diagram of the connection relationship between the first airbag and the second airbag; Figure 11 It is a structural diagram of the support component; Figure 12 for Figure 1 A schematic structural diagram of the device shown from another perspective; Figure 13for Figure 12 Enlarged view of point C in the middle; Figure 14 It is a structural diagram of the movable door assembly; Figure 15 for Figure 14 A half-section view of the device shown.

[0024] Among them, 1. Nasogastric tube connecting tube; 11. Cross-shaped through hole; 12. Annular groove; 13. Support plate; 14. Lifting base; 2. Sealing mechanism; 21. Expanding assembly; 21a. Arc-shaped plate; 21b. Triangular sealing plate; 21c. Connecting rod; 22. First airbag; 23. Second airbag; 24. Adjustment knob; 25. Extruder; 25a. First annular plate; 25b. Ball bearing; 25c. Second annular plate; 26. Connecting pipe; 3. Sealing mask body; 31. Lateral nasogastric tube connection slot; 32. Suction tube socket; 33. Oxygen connector; 4. Reset elastic ring; 5. Movable door assembly; 51. First slider; 51a. Square groove; 52. Second slider; 53. First elastic member; 54. Second elastic member; 55. Sealing member; 6. Sealing cover; 7. Adjustable elastic band; 8. Nasogastric tube. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "length direction", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features limited to "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] The inventors have found that when using an oxygen mask, the indwelling port cover needs to be opened to allow the nasogastric tube to pass through. However, when a patient is receiving oxygen and intubated with a nasogastric tube at the same time, oxygen will leak from the gap between the nasogastric tube indwelling port and the nasogastric tube, causing oxygen leakage, thereby affecting the oxygen inhalation effect. In addition, for patients who already wear a nasogastric tube, when they need to inhale oxygen and wear an oxygen mask, they need to pull out the nasogastric tube and insert it into the nasogastric tube retention port, which is complicated and very inconvenient to use.

[0029] Based on the above findings, the present application provides a sealing mask for patients with indwelling nasogastric tubes, which includes a sealing mask body 3, and a nasogastric tube connecting tube 1, a sealing mechanism 2, a reset elastic ring 4, and a movable door assembly 5 provided on the sealing mask body 3. The present application achieves a better sealing effect of the overall device through the following designs, specifically: 1. The sealing mechanism 2 can seal the gap between the nasogastric tube and the inner wall of the nasogastric tube connecting tube 1 to prevent oxygen leakage, thereby ensuring the patient's oxygen inhalation effect and preventing the nasogastric tube from being filtered or squeezed, thereby ensuring the normal use of the nasogastric tube; 2. The resetting elastic ring 4 can automatically close the expansion component in the sealing mechanism 2 after the nasogastric tube is withdrawn, preventing oxygen from leaking from the sealing mask and ensuring the patient's oxygen inhalation effect; 3. When a patient who has already worn a nasogastric tube uses the device, the movable door assembly 5 can be used to fix the nasogastric tube and seal the four sides of the nasogastric tube to prevent oxygen leakage. Example 1

[0030] This embodiment provides a sealing mask for patients with indwelling nasogastric tubes, such as Figure 1-15 As shown, it includes a nasogastric tube connecting tube 1, a sealing mechanism 2, a sealing mask body 3, a reset elastic ring 4 and a movable door assembly 5.

[0031] The two sides of the sealing mask body 3 are fixedly connected to the two ends of the adjustable elastic band 7, so that the sealing mask body 3 can be fixed above the face of patients with different body shapes. Elastic strips are also fixedly provided on the edges of the sealing mask body 3 to improve the patient's comfort when wearing it. It should be noted that the elastic strip, the adjustable elastic band 7, and the methods of fixing the elastic strip and the adjustable elastic band 7 to the sealing mask body 3 are all prior art and are not improved in the embodiments of the present invention. For example, the elastic strip is made of silicone, the adjustable elastic band 7 is an elastic band, and the methods of fixing the elastic strip and the adjustable elastic band to the sealing mask body 3 are adhesive or snap-on connections.

[0032] Among them, an oxygen connector 33 is provided on the sealing mask body 3 to connect to an external oxygen supply device; it should be noted that the external oxygen supply device provided in the embodiment of the present invention is a prior art and the embodiment of the present invention does not improve it.

[0033] The nasogastric tube connecting tube 1 is fixedly arranged on the sealing mask body 3 and is communicated with the sealing mask body 3; for example, the fixed connection method is an integrated fixed connection.

[0034] Specifically, the nasogastric tube connecting tube 1 is a T-shaped cylindrical structure, and a cross-shaped through hole 11 is provided at the center of the nasogastric tube connecting tube 1 for the nasogastric tube to pass through; wherein, an annular groove 12 is also provided at the opening of the nasogastric tube connecting tube 1, and the annular groove 12 is used to connect with the sealing mechanism 2 so as to seal the gap between the nasogastric tube and the inner wall of the cross-shaped through hole 11 to prevent oxygen leakage.

[0035] To prevent the sealing mechanism 2 from falling out of the annular groove 12, a sealing cover 6 is provided on the annular groove 12 of the nasogastric tube connecting tube 1 to retain the sealing mechanism 2 in place. Specifically, the sealing cover 6 is a cylindrical structure with a central through-hole. The central through-hole of the sealing cover 6 is adapted to engage with the nasogastric tube connecting tube 1. It should be noted that the embodiments of the present invention do not limit the connection method between the sealing cover 6 and the annular groove 12. For example, the connection method may be a threaded connection, a snap-fit ​​connection, or the like.

[0036] The sealing mechanism 2 includes an expansion assembly 21, a plurality of first airbags 22, a second airbag 22 and an auxiliary sealing assembly.

[0037] Specifically, the expansion assembly 21 includes a plurality of expansion units arranged circumferentially around the nasogastric tube connecting tube 1. Each expansion unit includes an arcuate plate 21a, a triangular sealing plate 21b, and a connecting rod 21c. It should be noted that the embodiment of the present invention does not limit the number of expansion units; preferably, the number of expansion units is three.

[0038] Among them, each arc plate 21a is located in the annular groove 12, and each arc plate 21a is slidingly connected to the annular groove 12. In this way, after the nasogastric tube passes through the center formed by the circumferential arrangement of each arc plate 21a, the arc plate 21a is squeezed by the nasogastric tube and moves to the side away from the nasogastric tube, that is, each arc plate 21a moves radially outward; it should be noted that the embodiment of the present invention does not limit the sliding connection method of the arc plate 21a and the annular groove 12. For example, a T-shaped protrusion is provided at the lower end of each arc plate 21a, and correspondingly, a T-shaped groove that matches the T-shaped protrusion and is slidingly connected is provided on the bottom surface of the annular groove 12.

[0039] The triangular sealing plate 21b is limitedly set in the horizontal groove in the cross-shaped through hole 11; specifically, the triangular sealing plate 21b and the arc plate 21a are set perpendicular to each other, and the end of the triangular sealing plate 21b close to the center of the cross-shaped through hole 11 is rounded to facilitate the passage of the nasogastric tube.

[0040] One end of the connecting rod 21c is fixedly connected to the arc plate 21a, and the other end passes through the nasogastric tube connecting tube 1 and is fixedly connected to the triangular sealing plate 21b, and the connecting rod 21c is slidingly connected to the nasogastric tube connecting tube 1.

[0041] A plurality of first airbags 22 are circumferentially arranged in the annular groove 12 , and each first airbag 22 is located outside the corresponding arc-shaped plate 21 a ; specifically, each first airbag 22 is an arc-shaped airbag.

[0042] The second airbag 23 is located inside the cross-shaped through hole 11; specifically, the second airbag 23 is a circular airbag; in actual use, in order to prevent the second airbag 23 from being displaced, a support plate 13 is also fixed inside the cross-shaped through hole 11; specifically, the support plate 13 and the inner wall of the cross-shaped through hole 11 are arranged perpendicular to each other, and the support plate 13 is fixedly connected to the inner wall of the cross-shaped through hole 11; wherein, the support plate 13 is an annular structure to prevent the second airbag 23 from falling off.

[0043] The working principle of the sealing mechanism 2 provided in the embodiment of the present invention is: During the process of inserting the nasogastric tube into the cross-shaped through hole 11, the end of the nasogastric tube penetrates the center of the expansion component 21. At this time, the triangular sealing plate 21b of each expansion unit in the expansion component 21 is squeezed by the outer wall of the nasogastric tube 21 and moves to the side away from the nasogastric tube. Then, each triangular sealing plate 21b drives the corresponding arc plate 21a to move outward through the connecting rod 21c. At this time, the two sides of each first air bag 22 are squeezed by the arc groove 12 and the arc plate 21a respectively. The gas inside each first air bag 22 passes through the connecting tube 26 and enters the second air bag 23, causing the second air bag 23 to expand so that the second air bag 23 fits tightly with the outer wall of the nasogastric tube to achieve sealing.

[0044] In actual use, the second airbag 23 is located between the support plate 13 and the auxiliary sealing assembly, and the second airbag 23 is connected to each first airbag 22 through the connecting pipe 26 .

[0045] The auxiliary sealing assembly includes an adjustment knob 24 and a squeezer 25 .

[0046] Specifically, the adjustment knob 24 is a cylindrical structure with a central through-hole. An annular groove is provided at one end of the adjustment knob 24, near the cross-shaped through-hole 11, for threaded connection with the opening of the nasogastric tube connecting barrel 1. During use, a medical professional rotates the adjustment knob 24, causing it to enter the opening of the cross-shaped through-hole 11. The squeezer 25 squeezes the upper surface of the second airbag 23, causing the second airbag 23 to deform laterally, thereby further conforming the second airbag 23 to the outer wall of the nasogastric tube, further enhancing the sealing effect of the sealing mechanism 2.

[0047] In actual use, in order to prevent the extruder 25 from falling off, a lifting base 14 is also slidably provided in the cross-shaped through hole 11; specifically, the lifting base 43 is a circular ring structure, and an upward-facing annular groove is provided on the lifting base 43, which is used to install the extruder 25.

[0048] The squeezer 25 includes a first annular plate 25a, a plurality of balls 25b, and a second annular plate 25c.

[0049] The second annular plate 25c is fixedly disposed in the annular groove of the lifting base 14; wherein an annular groove is further provided on the upper surface of the second annular plate 25c, and the annular groove is used to guide the movement direction of each ball 25b; The plurality of balls 25b are all located in the annular groove of the second annular plate 25c; The first annular plate 25a is located above the plurality of balls 25b and is in contact with and connected to the balls 25b.

[0050] In this way, when the adjusting knob 24 rotates and moves downward, the first annular plate 25 can rotate synchronously with the adjusting knob 24, and then each ball 25b rolls with the first annular plate 25, thereby reducing the friction between the adjusting knob 24 and the second annular plate 25c, ensuring that the second annular plate 25c moves downward quickly.

[0051] The working principle of the auxiliary sealing assembly provided in the embodiment of the present invention is: Medical staff can rotate the adjusting knob 24 so that the adjusting knob 24 enters the inside of the cross-shaped through hole 11 until the lower end of the adjusting knob 24 squeezes the first annular plate 25a, and then the first annular plate 25a squeezes the second annular plate 25c through the ball 25b, and the second annular plate 25c squeezes the upper end of the second airbag 23 downward through the lifting base 14. At this time, due to the setting of the nasogastric tube, the position of the arc plate 21a remains unchanged. Therefore, the second airbag 23 is deformed in the transverse direction, that is, the inner diameter of the second airbag 23 becomes smaller, thereby further making the second airbag 23 fit closely with the outer wall of the nasogastric tube, thereby further improving the sealing effect of the second airbag 23.

[0052] In order to restore the second airbag 23 to its original state after use for the next use, a reset elastic ring 4 is sleeved on the outer surface of the expansion component 21 and fixedly connected to the expansion component 21 .

[0053] In this way, after the nasogastric tube is inserted into the nasogastric tube connecting tube 1, the reset elastic ring 4 is stretched; after the nasogastric tube is withdrawn from the nasogastric tube connecting tube 1, each expansion unit in the expansion assembly 21 is no longer squeezed by the nasogastric tube. At this time, the reset spring 4 returns to its natural state, thereby driving each expansion unit to return to its initial position. At this time, the opening formed by each expansion unit is closed, and the first airbag 22 is no longer squeezed by the arc plate 21a, so that the gas in the second airbag 23 flows back to the first airbag 22, so that the first airbag 222 and the second airbag 23 both return to their initial state for the next use.

[0054] It should be noted that the embodiment of the present invention does not limit the fixed connection method between the resetting elastic ring 4 and the expansion assembly 21. For example, the fixed connection method is gluing, snap connection or screw connection, etc. Example 2

[0055] Based on Example 1, the difference from Example 1 is that the sealing mask body 3 provided in the embodiment of the present invention is further provided with a lateral nasogastric tube connection groove 31, and the lateral nasogastric tube connection groove 31 is provided with a movable door assembly 5.

[0056] Specifically, two sliding grooves are symmetrically provided on two opposite side walls inside the lateral nasogastric tube connecting groove 31 , and the two sliding grooves are used to install the movable door assembly 5 .

[0057] The movable door assembly 5 includes two first sliders 51, two second sliders 52 and two sealing members 55; Among them, the two first sliders 51 are respectively slidably arranged in the two sliding grooves, and one end of each first slider 51 is fixedly connected to the inner wall of the sliding groove through the first elastic member 53, and the other end is provided with a square groove 51a, and the square groove 51a is used to be fixedly connected to the corresponding second slider 52; specifically, one end of each second slider 52 is fixedly connected to the inner wall of the square groove 51a through the second elastic member 54, and the other end is fixedly connected with a sealing member 55, which is used to contact and connect with the outer wall of the nasogastric tube.

[0058] The seal 55 is a square sheet-like structure, and one side of the seal 55 is provided with an arcuate groove, which is used to fit the outer wall of the nasogastric tube. It should be noted that the embodiment of the present invention does not limit the material of the seal 55. For example, the material of the seal 55 is silicone or rubber.

[0059] It should be noted that the first elastic member 53 and the second elastic member 54 provided in the embodiment of the present invention are both existing technologies, and the embodiment of the present invention does not make any improvements thereto. Preferably, the first elastic member 53 and the second elastic member 54 are both springs.

[0060] The working principle of the movable door assembly 5 provided in the embodiment of the present invention is as follows: when the nasogastric tube is inserted between the two seals 55, the two seals 55 tightly wrap and fix the nasogastric tube under the action of the second elastic member 54 to prevent oxygen leakage; at this time, the two first sliders 51 are closed to each other under the action of the first elastic member 53 to protect the nasogastric tube and prevent the nasogastric tube from falling out of the two seals 55. Example 3

[0061] Based on Example 1, the difference from Example 1 is that the sealing mask body 3 provided in this embodiment of the present invention is further provided with a sputum suction tube socket 32. In this way, in actual use, a sputum suction tube can be inserted into the sputum suction tube socket 32 ​​to suck out the sputum in the patient's body.

[0062] Application Cases: Liu, who was intubated with a nasogastric tube for intestinal obstruction; S1: insert the end of the nasogastric tube into the cross-shaped through hole 11; In this step, the end of the gastric tube passes through the center of the expansion assembly 21. At this time, the triangular sealing plate 21b of each expansion unit in the expansion assembly 21 is squeezed by the outer wall of the nasogastric tube 21 and moves to the side away from the nasogastric tube. Then, each triangular sealing plate 21b drives the corresponding curved plate 21a to move outward through the connecting rod 21c. At this time, the two sides of each first airbag 22 are squeezed by the curved groove 12 and the curved plate 21a respectively. The gas inside each first airbag 22 passes through the connecting tube 26 and enters the second airbag 23, causing the second airbag 23 to expand so that the second airbag 23 is tightly fitted with the outer wall of the nasogastric tube to achieve a seal. S2: Adjusting the sealing effect of the second airbag 23 through the auxiliary sealing component; Specifically, the medical staff can rotate the adjusting knob 24 so that the adjusting knob 24 enters the cross-shaped through hole 11 until the lower end of the adjusting knob 24 squeezes the first annular plate 25a, and then the first annular plate 25a squeezes the second annular plate 25c through the ball 25b, and the second annular plate 25c squeezes the upper end of the second airbag 23 downward through the lifting base 14. At this time, due to the setting of the nasogastric tube, the position of the arc plate 21a remains unchanged. Therefore, the second airbag 23 is deformed in the transverse direction, that is, the inner diameter of the second airbag 23 becomes smaller, thereby further making the second airbag 23 closely fit against the outer wall of the nasogastric tube, thereby further improving the sealing effect of the second airbag 23; S3: Wrap the adjustable elastic band 7 around the patient's head to fix the sealing mask body 3 on the patient's face so that the patient can inhale oxygen after general anesthesia during the intestinal obstruction surgery.

[0063] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A sealing mask for a patient with an indwelling nasogastric tube, comprising a sealing mask body (3), characterized in that: The sealing mask body (3) is provided with: A nasogastric tube connecting tube (1) comprises a cross-shaped through hole (11), and an annular groove (12) is provided on the outer side of the nasogastric tube connecting tube (1); The sealing mechanism (2) is connected to the nasogastric tube connecting tube (1).

2. The sealing mask for patients with indwelling nasogastric tube according to claim 1, characterized in that: The sealing mechanism (2) comprises: The expansion component (21) is slidably connected to the nasogastric tube connecting tube (1); A plurality of first air bags (22) are respectively disposed in the annular grooves (12); The second airbag (23) is disposed in the cross-shaped through hole (11) and is in communication with each first airbag (22).

3. The sealing mask for patients with indwelling nasogastric tubes according to claim 2, characterized in that: The expansion assembly (21) includes a plurality of expansion units; each expansion unit includes: An arc-shaped plate (21a) is disposed in the annular groove (12); A triangular sealing plate (21b) is disposed in the cross-shaped through hole (11) and is perpendicular to the arc-shaped plate (21a); A connecting rod (21c) has one end connected to the arc-shaped plate (21a), and the other end passes through the nasogastric tube connecting tube (1) and is connected to the triangular sealing plate (21b).

4. The sealing mask for patients with indwelling nasogastric tubes according to claim 2, characterized in that: The sealing mechanism (2) further includes an auxiliary sealing component; the auxiliary sealing component includes: An adjusting knob (24) is threadedly connected to the nasogastric tube connecting tube (1); The squeezer (25) is disposed in the cross-shaped through hole (11) and is located between the adjustment knob (24) and the second air bag (23).

5. The sealing mask for patients with indwelling nasogastric tube according to claim 4, characterized in that: The extruder (25) comprises: A first annular plate (25a), the upper end of which is in contact with the bottom end of the adjusting knob (24); A plurality of balls (25b) located below the first annular plate (25a); The second annular plate (25c) is located between the plurality of balls (25b) and the second airbag (23), and a slideway is provided on the second annular plate (25c) to facilitate the rolling of the balls (25c).

6. The sealing mask for patients with indwelling nasogastric tubes according to claim 2, characterized in that: A reset elastic ring (4) is also sleeved on the outside of the expansion assembly (21).

7. The sealing mask for patients with indwelling nasogastric tube according to claim 1, characterized in that: The sealing mask body (3) is also provided with a lateral nasogastric tube connection groove (31) for fixing the nasogastric tube, and a movable door assembly (5) arranged at the lateral nasogastric tube connection groove (31).

8. The sealing mask for patients with indwelling nasogastric tube according to claim 7, characterized in that: The movable door assembly (5) comprises: Two first sliders (51) are symmetrically arranged on both sides of the lateral nasogastric tube connecting groove (31), and each first slider (51) is connected to the lateral nasogastric tube connecting groove (31) via a first elastic member (53); each first slider (51) is provided with a square groove (51a); Two second sliders (52) are respectively arranged in corresponding square grooves (51a), and one end of each second slider (52) is connected to the inner wall of the square groove (51a) through a second elastic member (54), and the other end is provided with a sealing member (55).

9. The sealing mask for patients with indwelling nasogastric tube according to claim 1, characterized in that: A sputum suction tube socket (32) is also provided on the sealing mask body (3).

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