Oxygen uptake monitoring type mask for gastroscopy

Abstract

The invention relates to the technical field of medical instruments, and discloses an oxygen uptake monitoring mask for gastroscopy, which is used for assisting a flexible catheter in being inserted into a mouthpiece, and comprises an oxygen uptake mask, an upper connecting pipe arranged on the surface of the oxygen uptake mask, a three-way connecting pipe arranged at one end, far away from the oxygen uptake mask, of the upper connecting pipe, and a top sleeve arranged at the top end of the three-way connecting pipe, the sealing plug is arranged at the top of the top sleeve, and the butt joint unit is arranged between the three-way connecting pipe and the mouth piece. According to the oxygen inhalation monitoring type mask for gastroscopy, by arranging the butt joint unit, a guiding effect on the flexible catheter can be achieved, and after entering the oxygen inhalation mask, the flexible catheter can rapidly and smoothly enter the mouth piece through the butt joint unit and then enter the gastral cavity through the oral cavity and the throat of a patient, so that when oxygen supply and gastroscopy are synchronously carried out, the operation is convenient, and the work efficiency is improved. Therefore, the problem of conflict between the two is solved, and the gastroscopy process is smoother and more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an oxygen inhalation monitoring mask for gastroscopy. Background Art

[0002] Both the oxygen monitoring mask and the gastroscope are medical devices with advanced functions. The oxygen monitoring mask covers the outside of the patient's mouth and nose, and can be used with an anesthesia machine, ventilator or central oxygen supply source to supply oxygen to the patient to assist the patient's breathing. The gastroscope can use a flexible catheter to send the endoscope into the patient's stomach through the oral pharynx to detect lesions in the patient's body. During a gastroscopy, in order to prevent the patient from biting the flexible catheter due to discomfort, a mouthpiece will be set in the patient's mouth in advance, and then the flexible catheter will be passed through the inside of the mouthpiece.

[0003] During gastroscopy examination and treatment, the human body will feel strong discomfort. In order to reduce the patient's discomfort, the patient will be anesthetized before the examination. At the same time, in order to ensure the patient's safety and avoid anesthetic drugs suppressing breathing and gastroscopy tube irritating the respiratory tract to cause suffocation, an oxygen mask will be worn before gastroscopy intubation to ensure normal breathing of the patient through continuous oxygen supply.

[0004] Patent publication number CN221673075U discloses an oxygen monitoring mask with a mouthpiece for gastroscopy, which relates to the field of mask technology and includes a mask body, a movable cover and a mouthpiece. An elastic band snap is provided at the edge of the mask body, and the mask body includes a first mating part and a second mating part. The second mating part is provided with a ventilation port and a Luer connector. The ventilation port is provided with an oxygen supply hose for oxygen supply, and the Luer connector is provided with an end-tidal carbon dioxide collection tube; the mask body also includes a gas outlet and an aluminum card, which can better monitor the patient's physical condition during painless gastroscopy. End-tidal carbon dioxide monitoring can detect hypoventilation before the patient's blood oxygen saturation decreases. Studies have shown that detecting alveolar hypoventilation in patients through carbon dioxide waveforms is more sensitive than visual observation, so that respiratory depression can be identified and treated as early as possible, saving hospital manpower costs and protecting patients during painless gastroscopy diagnosis and treatment.

[0005] The existing technology has the following defects: When wearing an oxygen mask for gastroscopy intubation, a special oxygen mask is required. The flexible catheter is first passed through the oxygen mask and then through the mouthpiece. However, since the flexible catheter, mouthpiece, and mask are three independent individuals, the entrance of the mouthpiece and the socket on the mask often do not correspond. As a result, the flexible catheter may be blocked when passing through the mask and mouthpiece in turn, and cannot enter the mouthpiece quickly and accurately, which is time-consuming and laborious. Summary of the Invention

[0006] In view of the problem in the prior art that a flexible catheter is difficult to pass through the mask and the mouthpiece at the same time, an oxygen inhalation monitoring mask for gastroscopy is proposed.

[0007] The present application provides an oxygen inhalation monitoring mask for gastroscopy, the purpose of which is to enable a flexible catheter to quickly and accurately penetrate the mask and the mouthpiece.

[0008] The technical solution of the present invention is: an oxygen monitoring mask for gastroscopy, used to assist the insertion of a flexible catheter into a mouthpiece, comprising an oxygen mask, an upper connecting pipe arranged on the surface of the oxygen mask, a three-way connecting pipe arranged at an end of the upper connecting pipe away from the oxygen mask, a top sleeve arranged at the top of the three-way connecting pipe, a sealing plug arranged at the top of the top sleeve, a main oxygen supply port sealing cover arranged on the outside of the three-way connecting pipe, an auxiliary oxygen supply interface and a monitoring interface arranged on the outside of the oxygen mask, an auxiliary oxygen supply port sealing cover arranged outside the auxiliary oxygen supply interface, and a docking unit arranged between the three-way connecting pipe and the mouthpiece; The three-way pipe specifically includes two parts: a main pipe and an oxygen supply branch pipe. The main pipe and the oxygen supply branch pipe are distributed in a T shape. The bottom end of the main pipe is inserted into the upper pipe, and the top sleeve is sleeved on the top of the main pipe. The docking unit forms a unique channel for the flexible catheter to pass through between the three-way pipe and the mouthpiece.

[0009] Furthermore, the mouthpiece specifically includes a bite tube, and a tongue plate and a lip plate arranged at both ends of the bite tube.

[0010] Furthermore, the docking unit is specifically a connecting assembly, and the connecting assembly specifically includes a connecting tube arranged in the oxygen mask; One end of the connecting tube is inserted upward into the upper connecting tube, and the other end is inserted downward into the mouthpiece.

[0011] Furthermore, the connecting assembly further includes a side opening opened on the outside of the connecting pipe; The side opening completely cuts off the connecting pipe from top to bottom, so that its horizontal cross section is C-shaped. The width of the side opening is smaller than the diameter of the flexible conduit. The connecting pipe is made of rubber material.

[0012] Furthermore, the connecting pipe passes through the main pipe upwards, and the opening direction of the side opening faces the oxygen supply branch pipe.

[0013] Furthermore, the docking unit is specifically a guide assembly, which specifically includes an upper connecting tube arranged in the upper connecting tube, a lower connecting tube arranged in the mouthpiece, an upper interface opened at one end of the upper connecting tube close to the lower connecting tube, a lower interface opened at one end of the lower connecting tube close to the upper connecting tube, and an elastic coil arranged between the upper connecting tube and the lower connecting tube; The upper end of the elastic coil is plugged into the upper interface, and the lower end of the elastic coil is plugged into the lower interface.

[0014] Furthermore, the elastic coil is arranged in a conical spiral, wherein the width near one end of the upper connecting tube is greater than the width near one end of the lower connecting tube, and the spiral pitch of the elastic coil is smaller than the diameter of the flexible catheter.

[0015] Furthermore, the guide assembly further includes a deflection rod disposed inside the main pipe; The elastic coil adopts a hollow design, the upper interface penetrates the inner wall of the upper connecting tube, one end of the deflection rod is connected to the top sleeve, and the other end of the deflection rod extends into the upper connecting tube and fits with the inner wall of the upper connecting tube to close the opening of the upper interface.

[0016] Beneficial effects of the present invention: 1. By setting up the docking unit, the flexible catheter can be guided so that after entering the oxygen mask, it can quickly and smoothly pass through the docking unit into the mouthpiece, and then enter the gastric cavity through the patient's mouth and throat. In this way, when oxygen supply and gastroscopy are carried out simultaneously, the two are closely combined, solving the conflict problem between the two and making the gastroscopy process smoother and more convenient.

[0017] 2. By using the connecting pipe, the connecting pipe can guide the flexible conduit. At the same time, the connecting pipe has a simple structure, stable function, low cost, and is suitable for large-scale application and rapid promotion and popularization.

[0018] 3. By opening a side opening on the side of the connecting tube, after the flexible catheter is passed through the mouthpiece into the throat and reaches a stable state, the connecting tube can be pulled out of the oxygen mask and peeled off from the outside of the flexible catheter through the side opening, so that the connecting tube will not affect the insertion of the flexible catheter. At the same time, without the restriction of the connecting tube, the mouthpiece gains a certain degree of freedom, and the patient can adjust it to a more comfortable state through the movement of the lips and teeth. The mouthpiece can also adjust its own state as the flexible catheter changes, so that the flexible catheter can have a better insertion angle or path.

[0019] When the connecting tube performs guiding work, the two ends are respectively inserted into the mouthpiece and the upper connecting tube and restricted. With the support of the hard support bar, the side opening cannot expand away from its own central axis, forming a stable narrow crack, preventing the flexible catheter from passing through here and escaping from the guide channel.

[0020] 4. By setting uniform diffusion, the influence of the guide channel on oxygen supply is reduced. The two guide components are set up. The design of the elastic coil creates a large open area in the guide channel, so that the oxygen entering the oxygen mask through the three-way pipe can be combined faster and more evenly. At the same time, the tapered elastic coil can make the process of the flexible catheter passing through smoother.

[0021] 5. By designing the elastic coil to be hollow, the elastic coil plays a guiding role, and the deflection rod is used to close the upper interface, so that the air in the upper interface cannot be discharged. With the support of the internal air, the rigidity of the elastic coil is enhanced, and it has strong anti-deformation ability, ensuring the smooth insertion of the flexible catheter. After the flexible catheter passes through the mouthpiece into the throat and reaches a stable state, the deflection rod is rotated to open the upper interface. In this way, the support of the air is lost, and the elastic coil's resistance to external forces is weakened. The patient can adjust it to a more comfortable state through the movement of the lips and teeth. The mouthpiece can also adjust its own state as the flexible catheter changes, so that the flexible catheter can have a better insertion angle or path. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of an oxygen monitoring mask for gastroscopy according to the present invention; Figure 2 Schematic diagram of the mouthpiece of the present invention; Figure 3 This is an overall structural diagram of Example 1 of the present invention; Figure 4 This is a structural disassembly diagram of Example 1 of the present invention; Figure 5 This is a schematic diagram of the three-way pipe of the present invention; Figure 6 This is a schematic diagram of the connection assembly of the present invention; Figure 7 This is an overall structural diagram of Example 2 of the present invention; Figure 8 This is a structural disassembly diagram of Example 2 of the present invention; Figure 9 A schematic diagram of the deflection rod and the top sleeve of the present invention; Figure 10 This is a schematic diagram of the guide assembly of the present invention; Figure 11 This is a cross-sectional view of Example 2 of the present invention; Figure 12 For the present invention Figure 11 Enlarged view of the middle guide assembly area.

[0023] In the picture: 1. Mouthpiece; 11. Bite tube; 12. Tongue plate; 13. Lip plate; 2. Oxygen mask; 3. Upper connecting pipe; 4. Tee connecting pipe; 41. Main pipe; 42. Oxygen supply branch pipe; 5. Top sleeve; 6. Sealing plug; 7. Connecting assembly; 71. Connecting pipe; 72. Side opening; 8. Guide assembly; 81. Upper connecting tube; 82. Lower connecting tube; 83. Upper interface; 84. Lower interface; 85. Elastic coil; 86. Deflection rod; 9. Auxiliary oxygen supply interface; 10. Monitoring interface; 14. Auxiliary oxygen supply port sealing cover; 15. Main oxygen supply port sealing cover. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] Example 1, with reference to Figures 1-6 , which is the first embodiment of the present invention, provides an oxygen monitoring mask for gastroscopy, which is used to assist the insertion of a flexible catheter into a mouthpiece 1, including an oxygen mask 2, an upper connecting pipe 3 arranged on the surface of the oxygen mask 2, and also including a three-way connecting pipe 4 arranged at the end of the upper connecting pipe 3 away from the oxygen mask 2, a top sleeve 5 arranged at the top of the three-way connecting pipe 4, a sealing plug 6 arranged at the top of the top sleeve 5, a main oxygen supply port sealing cover 15 arranged on the outside of the three-way connecting pipe 4, an auxiliary oxygen supply interface 9 and a monitoring interface 10 arranged on the outside of the oxygen mask 2, and an auxiliary oxygen supply port sealing cover 14 arranged outside the auxiliary oxygen supply interface 9. The mouthpiece 1 specifically includes a bite tube 11, and a tongue plate 12 and a lip plate 13 arranged at both ends of the bite tube 11.

[0026] Specifically, the bite tube 11, tongue plate 12 and lip plate 13 are integrally formed by injection molding. The bite tube 11 is contained in the mouth, and the lip plate 13 is attached to the outside of the lips. A binding opening is provided on the surface of the lip plate 13, and a fixing strap is installed in the binding opening. The oxygen mask 2 and the upper pipe 3 are integrally formed by injection molding, and a binding strap is installed on the outside of the oxygen mask 2. The three-way pipe 4 specifically includes a main pipe 41 and an oxygen supply branch pipe 42. The main pipe 41 and the oxygen supply branch pipe 42 are T-shaped. The main pipe 41 and the oxygen supply branch pipe 42 are integrally formed by injection molding. The bottom end of the main pipe 41 is inserted into the upper pipe 3 and is connected by threads. The top sleeve 5 is sleeved on the top of the main pipe 41 and is connected by threads. The top sleeve 5 is annular, and a space is reserved in the middle for the flexible catheter to pass through. The hole is passed through by a sealing plug 6 to seal it, and a sealing ring is installed on the inner side of the top sleeve 5. The end of the oxygen supply branch pipe 42 away from the main pipe 41 is connected to the anesthesia machine or the ventilator through a pipeline, and the monitoring interface 10 is connected to the end-tidal carbon dioxide partial pressure monitoring equipment through a pipeline. When the oxygen supply branch pipe 42 cooperates with the anesthesia machine or the ventilator circuit to supply oxygen to the patient, it assists the patient's breathing. The auxiliary oxygen supply interface 9 is connected to the central oxygen supply source. When in use, one of the two oxygen supply methods is selected. When using the oxygen supply branch pipe 4 to supply oxygen, open the main oxygen supply port sealing cover 15, and the auxiliary oxygen supply port sealing cover 14 remains closed. When using the auxiliary oxygen supply interface 9 to supply oxygen, open the auxiliary oxygen supply port sealing cover 14, and the main oxygen supply port sealing cover 15 remains closed.

[0027] When oxygen is supplied by the oxygen supply branch pipe 42 , a docking unit is provided, which forms a unique passage for the flexible conduit to pass through between the three-way pipe 4 and the mouthpiece 1 .

[0028] By setting up a docking unit, a guiding role can be played for the flexible catheter, so that after entering the oxygen mask 2, it can quickly and smoothly pass through the docking unit into the mouthpiece 1, and then enter the gastric cavity through the patient's mouth and throat. In this way, when oxygen supply and gastroscopy are carried out simultaneously, the two are closely combined, the conflict problem between the two is solved, and the gastroscopy process is smoother and more convenient.

[0029] The docking unit is specifically a connecting assembly 7 , and the connecting assembly 7 specifically includes a connecting tube 71 arranged in the oxygen inhalation mask 2 .

[0030] Specifically, one end of the connecting tube 71 is inserted upward into the upper connecting tube 3, and the other end is inserted downward into the mouthpiece 1. The connecting component 7 is made of silicone material.

[0031] By using the connecting tube 71, the connecting tube 71 can guide the flexible conduit. At the same time, the connecting tube 71 has a simple structure, stable function, and low cost, and is suitable for large-scale application and rapid promotion and popularization.

[0032] The connecting assembly 7 further includes a side opening 72 opened on the outside of the connecting pipe 71 .

[0033] Specifically, the side opening 72 completely cuts off the connecting pipe 71 from top to bottom, so that its horizontal cross-section is C-shaped. The opening width of the side opening 72 is smaller than the diameter of the flexible catheter. The connecting pipe 71 is made of rubber material. The connecting pipe 71 passes through the main pipe 41 upward. The opening direction of the side opening 72 is toward the oxygen supply branch pipe 42. A hard support bar is implanted in the inner wall of the connecting pipe 71 on both sides near the side opening 72. The support bar is made of plastic and has the same length as the connecting pipe 71.

[0034] By providing a side opening 72 on the side of the connecting tube 71, after the flexible catheter is passed through the mouthpiece 1 into the throat and reaches a stable state, the connecting tube 71 can be pulled out of the oxygen mask 2, and the connecting tube 71 can be peeled off from the outside of the flexible catheter through the side opening 72, so that the connecting tube 71 will not affect the insertion of the flexible catheter. At the same time, the restriction of the connecting tube 71 is lost, and the mouthpiece 1 gains a certain degree of freedom. The patient can adjust it to a more comfortable state through the movement of the lips and teeth, and the mouthpiece 1 can also adjust its own state as the flexible catheter changes, so that the flexible catheter can have a better insertion angle or path.

[0035] When the connecting tube 71 performs the guiding work, the two ends are respectively inserted into the mouthpiece 1 and the upper connecting tube 3 and restricted. With the support of the hard support bar, the side opening 72 cannot expand in the direction away from its own central axis, forming a stable narrow crack, preventing the flexible catheter from passing through here and escaping from the guide channel.

[0036] In conjunction with Example 1, the working principle of an oxygen monitoring mask for gastroscopy of the present invention is as follows: During use and installation, install the three-way pipe 4 on top of the upper pipe 3, then install the top sleeve 5 on top of the main pipe 41, and finally screw the sealing plug 6 into the top sleeve 5; first insert the connecting pipe 71 into the bite tube 11 from the direction of the lip plate 13, and keep the side opening 72 facing the same direction as the bite tube 11, insert the connecting pipe 71 from the inner side of the oxygen mask 2 through the upper pipe 3 into the three-way pipe 4, then insert the bite tube 11 and the tongue plate 12 into the patient's mouth, let the patient gently bite it, with the lips attached to the outside of the lip plate 13, cover the patient's mouth and nose with the oxygen mask 2, and fix it with a binding tie to complete the preliminary preparations.

[0037] Rotate the sealing plug 6 to remove it from the top sleeve 5, then pass the flexible catheter through the hole in the center of the top sleeve 5, and continuously push the flexible catheter so that it gradually passes through the main pipe 41, the connecting tube 71 and the bite tube 11 into the patient's mouth, continue to push the flexible catheter, and after the flexible catheter enters the throat and esophagus, it enters a stable state, rotate the top sleeve 5 to remove it from the main pipe 41, and then slide the top sleeve 5 along the flexible catheter to keep a certain distance from the main pipe 41; let the patient bite the bite tube 11, quickly pull out the connecting tube 71 from above the main pipe 41, and then break the connecting tube 71 apart from the side opening 72, and the flexible catheter passes through the side opening 72 to separate the two, and then quickly install the top sleeve 5 back on top of the main pipe 41. After completing all this, concentrate on pushing the flexible catheter so that the flexible catheter enters the patient's stomach.

[0038] Example 2, reference Figure 1-Figure 2 、 Figure 4-Figure 5 、 Figure 7-12 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the connecting assembly 7 used in the docking unit is replaced by a guide assembly 8, and the guide assembly 8 specifically includes an upper connecting tube 81 arranged in the upper connecting tube 3, a lower connecting tube 82 arranged in the mouthpiece 1, an upper interface 83 opened at one end of the upper connecting tube 81 close to the lower connecting tube 82, a lower interface 84 opened at one end of the lower connecting tube 82 close to the upper connecting tube 81, and an elastic coil 85 arranged between the upper connecting tube 81 and the lower connecting tube 82.

[0039] Specifically, the upper connecting tube 81 is inserted into the upper connecting tube 3, and the two are fixed by friction. The lower connecting tube 82 is inserted into the bite tube 11, and the two are fixed by friction. The upper end of the elastic coil 85 is inserted into the upper interface 83, and the lower end of the elastic coil 85 is inserted into the lower interface 84. The elastic coil 85 is arranged in a conical spiral, wherein the width near the end of the upper connecting tube 81 is greater than the width near the end of the lower connecting tube 82. The spiral pitch of the elastic coil 85 is smaller than the diameter of the flexible conduit. The vertical line at the upper and lower ends of the elastic coil 85 passes through the elastic coil 85 and is perpendicular to the ground. It is symmetrical based on the central axis of the elastic coil 85. In this way, the upper and lower fixed points of the elastic coil 85 are symmetrically distributed, so that the state and structure of the elastic coil 85 are more stable. The upper connecting tube 81, the lower connecting tube 82, and the elastic coil 85 are all made of silicone material.

[0040] By providing the guide assembly 8 and the design of the elastic coil 85, a large open area appears in the guide channel, allowing the oxygen entering the oxygen mask 2 through the three-way pipe 4 to diffuse faster and more evenly, reducing the impact of the guide channel on the oxygen supply, and making the combination of the two devices more reasonable. At the same time, the tapered elastic coil 85 can make the process of the flexible catheter passing through smoother.

[0041] The guide assembly 8 further includes a deflection rod 86 disposed inside the main tube 41 .

[0042] Specifically, the elastic coil 85 adopts a hollow design and is connected to the upper interface 83. The other end of the upper interface 83 passes through the inner wall of the upper connecting tube 81. One end of the deflection rod 86 is connected and fixed to the top sleeve 5. The other end of the deflection rod 86 extends into the upper connecting tube 81 and fits with the inner wall of the upper connecting tube 81 in an arc shape, closing the opening of the upper interface 83. The arc opening angle of the deflection rod 86 does not exceed 30 degrees, so as to prevent the deflection rod 86 from occupying too much space in the main tube 41.

[0043] By designing the elastic coil 85 to be hollow, when the elastic coil 85 plays a guiding role, the deflection rod 86 is used to close the upper interface 83, so that the air in the upper interface 83 cannot be discharged. With the support of the internal air, the rigidity of the elastic coil 85 is enhanced, and it has a strong deformation resistance, thereby ensuring the smooth insertion of the flexible catheter. After the flexible catheter passes through the mouthpiece 1 into the throat and reaches a stable state, the deflection rod 86 is rotated to open the upper interface 83. In this way, the support of the air is lost, and the elastic coil 85's resistance to external forces is weakened. The patient can adjust it to a more comfortable state through the movement of the lips and teeth, and the mouthpiece 1 can also adjust its own state as the flexible catheter changes, so that the flexible catheter can have a better insertion angle or path.

[0044] In conjunction with Example 2, the working principle of an oxygen monitoring mask for gastroscopy of the present invention is as follows: During use and installation, install the three-way pipe 4 on the top of the upper pipe 3, then install the top sleeve 5 on the top of the main pipe 41, and finally screw the sealing plug 6 into the top sleeve 5; first insert one end of the elastic coil 85 into the upper connecting tube 81, and then rotate the lower connecting tube 82 so that the lower interface 84 on the lower connecting tube 82 is symmetrical with the upper interface 83 based on the central axis of the elastic coil 85, and then insert the other end of the elastic coil 85 into the lower interface 84 to complete the basic assembly; then insert the upper connecting tube 81 into the upper pipe 3, and the mouthpiece 1 is hung on the inner side of the oxygen mask 2. Then, the oxygen mask 2 is re-covered on the patient's mouth and nose, and the patient is asked to gently bite the bite tube 11 and tongue plate 12, with his lips attached to the outside of the lip plate 13; cover the patient's mouth and nose with the oxygen mask 2, and fix it with a binding tie.

[0045] Quickly remove the top sleeve 5 from the main pipe 41, fix the deflection rod 86 to the bottom of the top sleeve 5 with bolts, and then install the top sleeve 5 back to the top of the main pipe 41, the deflection rod 86 is inserted into the main pipe 41 and extends into the upper connecting tube 81, and the deflection rod 86 fits with the inner wall of the upper connecting tube 81; let the patient move his lips and teeth, adjust the mouthpiece 1 to a comfortable state, and then rotate the top sleeve 5. The top sleeve 5 drives the deflection rod 86 to rotate to the opening of the upper interface 83, closing the outlet of the upper interface 83, so that the air inside the elastic coil 85 cannot be discharged from the upper interface 83, and a sealed environment is formed inside the elastic coil 85. In this way, when encountering external force squeezing and pulling, the air inside the elastic coil 85 supports the outer frame of the elastic coil 85, so that it can maintain a relatively stable state.

[0046] Rotate the sealing plug 6 to remove it from the top sleeve 5, then pass the flexible catheter through the hole in the center of the top sleeve 5, and continuously push the flexible catheter so that it gradually passes through the main pipe 41, the upper connecting tube 81, the elastic coil 85, the lower connecting tube 82 and the bite tube 11 into the patient's mouth, and continue to push the flexible catheter. After the flexible catheter enters the throat and esophagus, it enters a stable state, and the top sleeve 5 is rotated to drive the deflection rod 86 to rotate. The deflection rod 86 deflects and opens the opening of the upper interface 83. At this time, when the elastic coil 85 is squeezed and pulled by external force, the internal air can be discharged through the upper interface 83, and no longer has a supporting effect. The elastic coil 85 returns to a state where deformation is easily detected, and then concentrates on pushing the flexible catheter so that the flexible catheter enters the patient's stomach. During this process, the mouthpiece 1 can make small movements according to the interlacing changes of the flexible catheter or the movement of the patient's lips and teeth to reduce the patient's discomfort.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. An oxygen monitoring mask for gastroscopy, used to assist the insertion of a flexible catheter into a mouthpiece (1), comprising an oxygen mask (2), an upper pipe (3) arranged on the surface of the oxygen mask (2), characterized in that: It also includes a three-way pipe (4) arranged at one end of the upper pipe (3) away from the oxygen mask (2), a top sleeve (5) arranged at the top of the three-way pipe (4), a sealing plug (6) arranged at the top of the top sleeve (5), a main oxygen supply port sealing cover (15) arranged outside the three-way pipe (4), an auxiliary oxygen supply interface (9) and a monitoring interface (10) arranged outside the oxygen mask (2), an auxiliary oxygen supply port sealing cover (14) arranged outside the auxiliary oxygen supply interface (9), and a docking unit arranged between the three-way pipe (4) and the mouthpiece (1); The three-way pipe (4) specifically comprises two parts, namely a main pipe (41) and an oxygen supply branch pipe (42). The main pipe (41) and the oxygen supply branch pipe (42) are arranged in a T-shape. The bottom end of the main pipe (41) is inserted into the upper pipe (3), and the top sleeve (5) is sleeved on the top of the main pipe (41). The docking unit forms a unique passage for the flexible catheter to pass through between the three-way pipe (4) and the mouthpiece (1).

2. The oxygen absorption monitoring mask for gastroscopy according to claim 1, characterized in that: The mouthpiece (1) specifically comprises a bite tube (11), a tongue plate (12) and a lip plate (13) arranged at two ends of the bite tube (11).

3. The oxygen absorption monitoring mask for gastroscopy according to claim 2, characterized in that: The docking unit is specifically a connecting assembly (7), and the connecting assembly (7) specifically comprises a connecting pipe (71) arranged in the oxygen mask (2); One end of the connecting tube (71) is inserted upwards into the upper connecting tube (3), and the other end is inserted downwards into the mouthpiece (1).

4. The oxygen absorption monitoring mask for gastroscopy according to claim 3, characterized in that: The connecting assembly (7) further comprises a side opening (72) formed on the outside of the connecting pipe (71); The side opening (72) completely cuts off the connecting pipe (71) from top to bottom, so that its horizontal cross section is C-shaped. The opening width of the side opening (72) is smaller than the diameter of the flexible conduit. The connecting pipe (71) is made of rubber material.

5. The oxygen absorption monitoring mask for gastroscopy according to claim 4, characterized in that: The connecting pipe (71) penetrates the main pipe (41) upwards, and the opening direction of the side opening (72) faces the oxygen supply branch pipe (42).

6. The oxygen monitoring mask for gastroscopy according to claim 2, characterized in that: The docking unit is specifically a guide assembly (8), which specifically comprises an upper connecting tube (81) arranged in the upper connecting tube (3), a lower connecting tube (82) arranged in the mouthpiece (1), an upper interface (83) provided at one end of the upper connecting tube (81) close to the lower connecting tube (82), a lower interface (84) provided at one end of the lower connecting tube (82) close to the upper connecting tube (81), and an elastic coil (85) provided between the upper connecting tube (81) and the lower connecting tube (82); The upper end of the elastic coil (85) is inserted into the upper interface (83), and the lower end of the elastic coil (85) is inserted into the lower interface (84).

7. The oxygen monitoring mask for gastroscopy according to claim 6, characterized in that: The elastic coil (85) is arranged in a conical spiral, wherein the width of the end close to the upper connecting tube (81) is greater than the width of the end close to the lower connecting tube (82), and the spiral pitch of the elastic coil (85) is smaller than the diameter of the flexible catheter.

8. The oxygen monitoring mask for gastroscopy according to claim 7, characterized in that: The guide assembly (8) further comprises a deflection rod (86) disposed inside the main pipe (41); The elastic coil (85) adopts a hollow design, the upper interface (83) penetrates the inner wall of the upper connecting tube (81), one end of the deflection rod (86) is connected to the top sleeve (5), and the other end of the deflection rod (86) extends into the upper connecting tube (81) and fits with the inner wall of the upper connecting tube (81) to close the opening of the upper interface (83).

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