A nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function

Abstract

The present invention relates to the field of medical device technology, and discloses a nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopic examination function, comprising a nasal mask body, a connector assembly, and an operating assembly. The rear edge of the nasal mask body is provided with a sealing assembly, which is composed of a sealing frame fixedly connected to the rear edge of the nasal mask body and a sealing liner provided on the rear side of the sealing frame. The sealing liner includes a central silicone pad, both sides of the central silicone pad are provided with U-shaped silicone pads, the other sides of the two groups of U-shaped silicone pads are respectively connected to arc-shaped silicone pads, and the other sides of the two groups of arc-shaped silicone pads are fixed to the rear edge of the sealing frame. The nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopic examination function can flexibly adjust the position of the central silicone pad through the inflation and deflation operations of the telescopic mechanism. When the bronchoscope is inserted, the support force provided to the central silicone pad by the fixing ring and the connecting ring helps to maintain the overall stability of the nasal mask body.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopy function. Background Art

[0002] Fiberoptic bronchoscopy is a procedure in which a slender bronchoscope is inserted into the patient's lower respiratory tract through the mouth or nose, that is, through the glottis into the trachea and bronchi and even further distally, to directly observe lesions in the trachea and bronchi, and perform corresponding examinations and treatments based on the lesions. Hypoxemia is a common complication of fiberoptic bronchoscopy, which may cause symptoms such as dyspnea and cyanosis. To prevent the occurrence of hypoxemia, the patient needs to be given oxygen and the end-tidal carbon dioxide partial pressure is monitored at the same time. This can detect the patient's hypoxia earlier and intervene in time, reducing the incidence of hypoxemia during the examination, ensuring anesthesia safety, and improving the safety and reliability of bronchoscopy.

[0003] The existing publication number CN217938860U discloses a synchronized oxygen supply mask for bronchial intubation detection, which includes a transparent mask body, an oxygen supply tube connector is provided on the front of the transparent mask body, and the oxygen supply end of the oxygen supply tube connector is connected to an external oxygen supply device through an oxygen supply tube, a circular mounting hole is provided on the front of the transparent mask body, and an insertion tube for inserting a fiber bronchus is fixedly installed on the inner wall of the circular mounting hole, and a plastic rope corresponding to the insertion tube is fixedly connected to the front of the transparent mask body. Although the above technical solution can allow the fiber bronchus to be inserted into the patient's nasal cavity or oral cavity through two insertion tubes when the patient undergoes bronchoscopic examination, when the patient suffers from hypoxia during the examination, oxygen can be supplied to the inside of the mask through external oxygen supply equipment to ensure the patient's safety, but there are also certain problems.

[0004] In the existing technology, the currently widely used ordinary breathing masks have the problem of insufficient sealing performance when adapted for bronchoscopic examinations. Ordinary breathing masks are often difficult to fit the patient's facial contours during design and use. In actual use, the patient's movements during the examination may cause a gap between the mask and the facial contour, resulting in gas leakage. Gas leakage will not only reduce the oxygen delivery efficiency, but also affect the accuracy of end-tidal carbon dioxide collection, so that the monitored carbon dioxide value cannot truly reflect the patient's actual situation, thereby interfering with the medical staff's accurate judgment of the patient's condition and interfering with the bronchoscopic examination. Secondly, since the bronchoscope tube itself has a certain rigidity, when using an ordinary mask, the presence of the mask will limit the operating space and angle of the bronchoscope. During the insertion of the bronchoscope, the bronchoscope comes into contact with the mask and exerts a certain force, which may cause the mask to shift during the operation, affecting the oxygen inhalation effect and the examination process, and may even cause accidental damage to the patient's respiratory tract, seriously reducing the safety and applicability of bronchoscopic examinations. Summary of the Invention

[0005] The purpose of the present invention is to provide a nasal mask for end-tidal carbon dioxide monitoring with a bronchoscopic examination function, so as to solve the problem that ordinary respiratory masks proposed in the above-mentioned background technology are difficult to fit the patient's facial contour, and are affected by the patient's movements during the examination, resulting in a gap between the mask and the face, thereby causing gas leakage.

[0006] The present invention provides a nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopic examination function, which adopts the following technical solutions:

[0007] A nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopy function, comprising a nasal mask body, a connector assembly, and an operating assembly; a sealing assembly is provided on the rear edge of the nasal mask body; the sealing assembly is composed of a sealing frame fixedly connected to the rear edge of the nasal mask body and a sealing liner provided on the rear side of the sealing frame; the sealing liner comprises a central silicone pad; both sides of the central silicone pad are provided with U-shaped silicone pads; the other sides of two groups of U-shaped silicone pads are respectively connected to arc-shaped silicone pads; the other sides of the two groups of arc-shaped silicone pads are fixed to the rear edge of the sealing frame; a fixing ring is fixed to one side of the central silicone pad close to the sealing frame; a connecting ring is fixedly connected to the fixing ring; the connecting ring is provided with a telescopic mechanism capable of controlling the forward and backward movement of the central silicone pad;

[0008] In the initial state, the middle silicone pad is flush with the back side of the curved silicone pad, and both are in contact with the patient's face. In the adjusted state, the U-shaped silicone pad is in a contracted state, and the middle silicone pad and the curved silicone pad are distributed front to back, forming a double-layer hollow structure between the two groups of curved silicone pads. At this time, only the middle silicone pad is in contact with the patient's face.

[0009] Furthermore, the telescopic mechanism includes an air cavity formed on the inner wall of the rear side of the nasal mask body, a slidable piston ring is provided in the air cavity, the piston ring and the connecting ring are fixedly connected by a plurality of groups of connecting posts distributed at equal intervals, and a spring is provided on the connecting post, and the two ends of the spring respectively abut against the piston ring and the air cavity;

[0010] An inflation tube is connected through the nasal mask body, one end of the inflation tube is connected to the air cavity, and a sealing plug is sealed and inserted at the other end.

[0011] Furthermore, the middle silicone pad, the U-shaped silicone pad and the arc-shaped silicone pad are integrally formed, and the thickness of the middle silicone pad and the arc-shaped silicone pad is greater than that of the U-shaped silicone pad.

[0012] Furthermore, a sweat-conducting component is provided between the middle silicone pad, the fixing ring and the connecting ring. The sweat-conducting component includes multiple groups of air holes provided on the fixing ring and a groove provided on the inner wall of the rear side of the fixing ring, and the groove is filled with sponge.

[0013] Furthermore, the sweat conduction component also includes a liquid storage tank opened in the connecting ring, and multiple groups of liquid conduction channels are symmetrically provided at the upper and lower positions of the liquid storage tank. The liquid conduction channels are opened in the connecting ring, the rear end of the liquid conduction channels is in contact with the front side of the sponge, and the front end of the liquid conduction channels is connected with the front side of the liquid storage tank. The liquid conduction channels are filled with liquid absorbent fillers.

[0014] Furthermore, the connector assembly includes a dual-channel connector that is arranged through the nasal mask body and a first connecting end and a second connecting end that are connected through the dual-channel connector, the first connecting end is used to connect the oxygen supply hose, and the second connecting end is used to connect the end-tidal carbon dioxide collection tube, wherein the first connecting end is arranged relative to the dual-channel connector, and the second connecting end and the dual-channel connector are arranged perpendicular to each other.

[0015] Furthermore, a separator for separating the airflow directions is provided in the dual-channel joint, and the separator is provided between the first connecting end and the second connecting end.

[0016] Furthermore, two gas outlets are symmetrically provided on the main body of the nasal mask, and each of the gas outlets is provided with a plurality of air outlet holes arranged at intervals and is covered with a circular film.

[0017] Furthermore, the operating assembly includes a left operating port of the bronchoscope and a right operating port of the bronchoscope, and both the left operating port of the bronchoscope and the right operating port of the bronchoscope are fixedly and tightly connected to the nasal mask body.

[0018] Furthermore, the nasal mask body is provided with a transversely arranged aluminum clip, and the nasal mask body is also provided with an elastic band, and the two ends of the elastic band are respectively connected to the rear edge of the nasal mask body.

[0019] Beneficial effects of the present invention:

[0020] 1. By providing a sealing component and a telescopic mechanism, the position of the middle silicone pad can be flexibly adjusted through the inflation and deflation operations of the telescopic mechanism. When the bronchoscope is inserted, the support force provided to the middle silicone pad by the fixing ring and the connecting ring helps to maintain the overall stability of the nasal mask body, and prevents the nasal mask body from shaking or shifting when the bronchoscope is inserted, effectively solving the problem of interference between the bronchoscope tube and the ordinary mask during insertion and operation. During the bronchoscope examination, the telescopic mechanism adjusts the state of the sealing pad, and the double-layer hollow structure formed by the arc-shaped silicone pad not only enhances the sealing effect, but also has good elasticity and cushioning performance. When the patient moves his head or twitches his facial muscles due to discomfort, it can effectively reduce the pressure of the nasal mask body on the facial skin, which is conducive to the patient's better cooperation with the examination.

[0021] 2. By providing a sweat guide component, during the bronchoscopy, the patient may sweat due to tension, discomfort or examination environment and other factors. The sweat guide component can absorb and guide the sweat in time, keep the patient's face dry, and prevent sweat from accumulating in the double-layer hollow structure formed by the arc-shaped silicone pad, causing discomfort to the patient's face. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a side structural schematic diagram of the present invention;

[0024] Figure 3 It is a partial three-dimensional structural diagram of the nasal mask body, sealing assembly and telescopic mechanism of the present invention;

[0025] Figure 4 It is a schematic cross-sectional view of a partial three-dimensional structure of the nasal mask body, the sealing assembly and the telescopic mechanism of the present invention;

[0026] Figure 5 It is a schematic cross-sectional view of a partial three-dimensional structure of the sealing gasket of the present invention;

[0027] Figure 6 This is a partial side structural cross-sectional diagram of the nasal mask body, sealing frame, middle silicone pad, U-shaped silicone pad, arc-shaped silicone pad, fixing ring, connecting ring, air cavity, piston ring, connecting column, spring, inflation tube and sealing plug of the present invention;

[0028] Figure 7 For the present invention Figure 6 Schematic diagram showing the contracted state of the middle silicone pad, fixing ring and connecting ring from the side;

[0029] Figure 8 It is a partial three-dimensional cross-sectional diagram of the middle silicone pad, U-shaped silicone pad, arc-shaped silicone pad, fixing ring, connecting ring and sweat guide assembly of the present invention;

[0030] Figure 9 It is a schematic cross-sectional diagram of the rear view structure of the dual-channel connector, the first connecting end, the second connecting end and the separator of the present invention.

[0031] In the picture:

[0032] 1. Nasal mask body; 2. Connector assembly; 21. Dual-channel connector; 22. First connecting end; 23. Second connecting end; 24. Separator; 3. Operating assembly; 31. Left operating port of bronchoscope; 32. Right operating port of bronchoscope; 4. Sealing assembly; 41. Sealing frame; 42. Sealing gasket; 421. Middle silicone pad; 422. U-shaped silicone pad; 423. Arc-shaped silicone pad; 43. Fixing ring; 44. Connecting ring; 5. Telescopic mechanism; 51. Air cavity; 52. Piston ring; 53. Connecting column; 54. Spring; 55. Inflation tube; 56. Sealing plug; 6. Sweat guide assembly; 61. Air vent; 62. Groove; 63. Sponge; 64. Liquid storage tank; 65. Liquid guide channel; 66. Liquid absorbent filler; 7. Gas outlet; 8. Aluminum card; 9. Elastic band. DETAILED DESCRIPTION

[0033] 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.

[0034] Reference Figure 1-Figure 5 The present invention provides a nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopy function, comprising a nasal mask body 1, a joint assembly 2 and an operating assembly 3. A sealing assembly 4 is provided at the rear edge of the nasal mask body 1. The sealing assembly 4 is composed of a sealing frame 41 fixedly connected to the rear edge of the nasal mask body 1 and a sealing gasket 42 provided at the rear side of the sealing frame 41. The sealing gasket 42 includes a middle silicone pad 421. U-shaped silicone pads 422 are provided on both sides of the middle silicone pad 421. The other sides of the two groups of U-shaped silicone pads 422 are respectively connected to arc-shaped silicone pads 423. The other sides of the two groups of arc-shaped silicone pads 423 are fixed to the rear edge of the sealing frame 41. A fixing ring 43 is fixed to the side of the middle silicone pad 421 close to the sealing frame 41. A connecting ring 44 is fixedly connected to the fixing ring 43. The connecting ring 44 is provided with a telescopic mechanism 5 that can control the forward and backward movement of the middle silicone pad 421.

[0035] Specifically, the telescopic mechanism 5 includes an air cavity 51 provided on the inner wall of the rear side of the nasal mask body 1, a slidable piston ring 52 is provided in the air cavity 51, the piston ring 52 and the connecting ring 44 are fixedly connected by a plurality of groups of connecting posts 53 distributed at equal intervals, a spring 54 is provided on the connecting post 53, and the two ends of the spring 54 respectively abut against the piston ring 52 and the air cavity 51, wherein the connecting post 53 movably passes through the sealing frame 41, and an inflation tube 55 is connected to the nasal mask body 1, one end of the inflation tube 55 passes through the air cavity 51, and the other end is sealed with a sealing plug 56. During bronchoscopy, the telescopic mechanism 5 can flexibly adjust the position of the middle silicone pad 421 according to the needs of the examination. In the initial state, the air cavity 51 is in an inflated state. At this time, the sealing plug 56 is sealed and inserted at the other end of the inflation tube 55. The piston ring 52 controls the connecting column 53, the connecting ring 44 and the fixing ring 43 to move toward the rear side of the nasal mask body 1, so that the fixing ring 43 provides support for the middle silicone pad 421. The middle silicone pad 421 is flush with the rear side of the arc-shaped silicone pad 423. In the adjustment state, the sealing plug 56 is pulled out, and the air cavity 51 is in a deflated state. Under the elastic action of the spring 54, the piston ring 52, the connecting column 53, the connecting ring 44 and the fixing ring 43 are controlled to move toward the sealing frame 41, so that the middle silicone pad 421 and the arc-shaped silicone pad 423 are distributed front to back.

[0036] It should be noted that the shape of the sealing frame 41 is adapted to the rear edge of the nasal mask body 1, and plays the role of connecting and fixing the various parts of the sealing liner 42. The middle silicone pad 421 is located in the middle area of ​​the rear side of the sealing frame 41, and its shape can fit the facial contour around the patient's nose. The thickness of the middle silicone pad 421 and the arc-shaped silicone pad 423 is greater than the thickness of the U-shaped silicone pad 422, and there is a gap between the U-shaped silicone pad 422 and the arc-shaped silicone pad 423, which can better adapt to the curve changes that occur when the middle silicone pad 421 is stretched and contracted. The rear side of the arc-shaped silicone pad 423 is set in an arc shape, which fits the patient's facial contour. The middle silicone pad 421, the U-shaped silicone pad 422 and the arc-shaped silicone pad 423 are an integrated molding design, which can fully fit the patient's face and reduce the possibility of gas leakage.

[0037] Reference Figure 6-Figure 7 The sealing pad 42 has two states. In the initial state, the middle silicone pad 421 is flush with the rear side of the arc-shaped silicone pad 423, and both are in contact with the patient's face. When the bronchoscope is inserted, they come into contact with the nasal mask body 1 and exert a certain force. At this time, the fixing ring 43 and the connecting ring 44 provide support to the middle silicone pad 421, which helps to maintain the overall stability of the nasal mask body 1 and prevent the nasal mask body 1 from shaking or shifting when the bronchoscope is inserted.

[0038] In the adjustment state, the connecting ring 44 drives the fixing ring 43 to move toward the sealing frame 41. At this time, the U-shaped silicone pad 422 is in a contracted state, and the middle silicone pad 421 and the arc-shaped silicone pad 423 are distributed front to back. At this time, a double-layer hollow structure is formed between the two groups of arc-shaped silicone pads 423, and only the middle silicone pad 421 is in contact with the patient's face. During the bronchoscopy, the patient may have head movements or facial muscle twitching due to discomfort. The double-layer hollow structure formed by the arc-shaped silicone pad 423 has good elasticity and cushioning properties, which reduces the pressure of the nasal mask body 1 on the facial skin and improves the patient's comfort. At the same time, the double-layer hollow structure formed by the arc-shaped silicone pad 423 can better fit the uneven facial contour, reduce the gap caused by the mismatch of facial contours, and thus enhance the sealing effect of the nasal mask body 1.

[0039] Reference Figure 8 A sweat guide component 6 is provided between the middle silicone pad 421, the fixing ring 43 and the connecting ring 44. Specifically, the sweat guide component 6 includes multiple groups of air holes 61 opened on the fixing ring 43 and a groove 62 opened on the inner wall of the rear side of the fixing ring 43. The groove 62 is filled with a sponge 63. When the patient sweats on the face, the sweat will enter the groove 62 on the inner wall of the rear side of the fixing ring 43 through the air holes 61. The sponge 63 filled in the groove 62 will quickly absorb the sweat to prevent sweat from accumulating on the patient's face and causing discomfort.

[0040] Furthermore, the sweat guide component 6 also includes a liquid storage tank 64 provided in the connecting ring 44, and a plurality of liquid guide channels 65 are symmetrically provided at the upper and lower positions of the liquid storage tank 64. The liquid guide channels 65 are provided in the connecting ring 44, and the rear end of the liquid guide channels 65 contacts the front side of the sponge 63, and the front end of the liquid guide channels 65 is connected with the front side of the liquid storage tank 64. The liquid guide channels 65 are filled with a liquid absorbent filler 66. When the sweat adsorbed by the sponge 63 reaches a certain amount, the liquid absorbent filler 66 will absorb the sweat from the sponge 63 and guide the sweat to the liquid storage tank 64 for storage through capillary action. The front end of the liquid guide channel 65 is connected with the front side of the liquid storage tank 64, so the sweat collected in the liquid storage tank 64 will not flow back.

[0041] Reference Figure 2 The connector assembly 2 includes a dual-channel connector 21 that is connected to the nasal mask body 1, and a first connection end 22 and a second connection end 23 that are connected to the dual-channel connector 21. The first connection end 22 is used to connect the oxygen supply hose, and the second connection end 23 is used to connect the end-tidal carbon dioxide collection tube. The first connection end 22 is arranged relative to the dual-channel connector 21, and the second connection end 23 and the dual-channel connector 21 are arranged perpendicular to each other.

[0042] The first connection end 22 is detachably connected to the oxygen supply hose; the second connection end 23 is detachably connected to the end-tidal carbon dioxide collection tube.

[0043] Further, refer to Figure 9 A separator 24 for separating the airflow directions is provided in the dual-channel connector 21. The separator 24 is provided between the first connection end 22 and the second connection end 23. The cavity in the dual-channel connector 21 is divided into two halves by the separator 24. The separator 24 allows oxygen to enter the patient's nasal cavity through the first connection end 22. The end-tidal carbon dioxide collection tube can conveniently detect the carbon dioxide concentration exhaled by the patient from the second connection end 23 at any time.

[0044] Among them, two gas outlets 7 are symmetrically arranged on the nasal mask body 1, and the two gas outlets 7 are respectively located on the left and right sides of the nasal mask body 1. Each gas outlet 7 is provided with a number of spaced air outlets and covered with a circular film. The film fits tightly against the edge of the air outlet. The film is a single-hole, bilateral, one-way ventilation structure. Under normal circumstances, due to the barrier of the film, outside air cannot enter the inside of the nasal mask, effectively maintaining the closed environment inside the nasal mask, ensuring the oxygen delivery efficiency and the accuracy of end-tidal carbon dioxide monitoring. When an emergency such as insufficient oxygen supply or mechanical failure occurs, the gas pressure exhaled by the patient can break through the film and the waste gas can be discharged. At the same time, the external atmospheric pressure will cause the film to open slightly to the outside, allowing the patient to inhale peripheral air to ensure the patient's basic breathing needs.

[0045] Among them, the operating component 3 includes a left operating port 31 of the bronchoscope and a right operating port 32 of the bronchoscope. The left operating port 31 of the bronchoscope and the right operating port 32 of the bronchoscope are fixedly and tightly connected to the nasal mask body 1 for insertion of the bronchoscope tube for inspection and treatment. The inner diameter of the left operating port 31 of the bronchoscope is larger than that of the right operating port 32. The inner diameter of the left operating port 31 of the bronchoscope is 1 cm, and the inner diameter of the right operating port 32 is 0.6 cm. When the bronchoscope tube is inserted into the left operating port 31 of the bronchoscope, the sealing cover of the left operating port 31 of the bronchoscope is cut open. When the bronchoscope tube is inserted into the right operating port 32 of the bronchoscope, the sealing cover of the right operating port 32 of the bronchoscope is cut open to achieve smooth insertion of the bronchoscope body.

[0046] Among them, the nasal mask body 1 is provided with a transversely arranged aluminum card 8, which is used to adjust the shape of the nasal mask body 1. When in use, the nasal mask body 1 can be made to fit the patient's nose more closely by pinching the aluminum card 8. The nasal mask body 1 is also provided with an elastic band 9, and the two ends of the elastic band 9 are respectively connected to the rear edge of the nasal mask body 1. When in use, adjust the elastic band 9 for adaptation and fixation.

[0047] The present invention provides a nasal mask for monitoring end-tidal carbon dioxide with a bronchoscopy function, and its working principle is as follows:

[0048] During the preparation stage, the nasal mask body 1 is worn on the patient's face through the elastic band 9. The transversely arranged aluminum clips 8 can be pinched to make the nasal mask body 1 fit the patient's nose more closely. At this time, the sealing assembly 4 is in the initial state. The middle silicone pad 421 is flush with the rear side of the arc-shaped silicone pad 423 and both are in contact with the patient's face. The U-shaped silicone pad 422 is located between the two, and together they fit the facial contours tightly to reduce gas leakage. At the same time, the air cavity 51 of the telescopic mechanism 5 is inflated, and the sealing plug 56 seals the inflation tube 55. Under the action of air pressure, the piston ring 52 drives the connecting ring 44 and the fixing ring 43 to move toward the rear side of the nasal mask body 1 through multiple groups of equally spaced connecting columns 53. The fixing ring 43 provides support for the middle silicone pad 421 to ensure the stability of the sealing liner 42.

[0049] Before the bronchoscope is inserted, the dual-channel connector 21 is connected to the nasal mask body 1, the first connecting end 22 of the dual-channel connector is connected to the oxygen supply hose, and the second connecting end 23 is connected to the end-tidal carbon dioxide collection tube. The separator 24 in the dual-channel connector 21 divides the cavity into two halves, so that oxygen enters the patient's nasal cavity from the first connecting end 22, and the end-tidal carbon dioxide collection tube detects the patient's exhaled carbon dioxide concentration at any time through the second connecting end 23. When inserting the bronchoscope tube, the left operating port 31 or the right operating port 32 of the bronchoscope can be selected, and the sealing cover can be cut open to insert the bronchoscope tube. When the bronchoscope tube is inserted, it contacts the nasal mask body 1 and applies force. At this time, the support force provided by the fixing ring 43 and the connecting ring 44 to the middle silicone pad 421 helps to maintain the overall stability of the nasal mask body 1 and prevent shaking or displacement;

[0050] During the bronchoscopy process, it is necessary to adjust the state of the sealing gasket 42, pull out the sealing plug 56, deflate the air cavity 51, and the elastic action of the spring 54 pushes the piston ring 52, driving the connecting column 53, the connecting ring 44 and the fixing ring 43 to move toward the sealing frame 41, so that the middle silicone pad 421 and the arc-shaped silicone pad 423 are distributed front and back, and the U-shaped silicone pad 422 shrinks. At this time, the two groups of arc-shaped silicone pads 423 form a double-layer hollow structure that contacts the patient's face, enhancing the sealing effect.

[0051] During the entire inspection process, sweat enters the groove 62 through the multiple groups of air holes 61 on the fixed ring 43 and is quickly absorbed by the sponge 63 filled in the groove 62. When the sweat absorbed by the sponge 63 reaches a certain amount, the absorbent filler 66 in the liquid guide channel 65 in the connecting ring 44 absorbs the sweat from the sponge 63 and guides it to the liquid storage tank 64 for storage through capillary action.

[0052] 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. A nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function, comprising a nasal mask body, a connector assembly, and an operating assembly, characterized in that: A sealing assembly is provided on the rear edge of the nasal mask body, and the sealing assembly consists of a sealing frame fixedly connected to the rear edge of the nasal mask body and a sealing gasket provided on the rear side of the sealing frame. The sealing gasket includes a central silicone pad, and U-shaped silicone pads are provided on both sides of the central silicone pad. The other sides of the two groups of U-shaped silicone pads are respectively connected to arc-shaped silicone pads, and the other sides of the two groups of arc-shaped silicone pads are fixed to the rear edge of the sealing frame. A fixing ring is fixed to the side of the central silicone pad close to the sealing frame, and a connecting ring is fixedly connected to the fixing ring. The connecting ring is provided with a telescopic mechanism that can control the forward and backward movement of the central silicone pad; In the initial state, the middle silicone pad is flush with the back side of the curved silicone pad, and both are in contact with the patient's face. In the adjusted state, the U-shaped silicone pad is in a contracted state, and the middle silicone pad and the curved silicone pad are distributed front to back, forming a double-layer hollow structure between the two sets of curved silicone pads. At this time, only the middle silicone pad is in contact with the patient's face; The telescopic mechanism includes an air cavity formed on the inner wall of the rear side of the nasal mask body, a slidable piston ring is provided in the air cavity, and the piston ring and the connecting ring are fixedly connected by a plurality of groups of connecting posts distributed at equal intervals, and a spring is provided on the connecting post, and the two ends of the spring respectively abut against the piston ring and the air cavity; The nasal mask body is connected to an inflation tube, one end of which is connected to the air cavity, and the other end is sealed with a sealing plug; The middle silicone pad, the U-shaped silicone pad and the arc-shaped silicone pad are integrally formed, and the thickness of the middle silicone pad and the arc-shaped silicone pad is greater than that of the U-shaped silicone pad.

2. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 1, characterized in that: A sweat-conducting component is provided between the middle silicone pad, the fixing ring and the connecting ring. The sweat-conducting component includes a plurality of air holes provided on the fixing ring and a groove provided on the inner wall of the rear side of the fixing ring. The groove is filled with sponge.

3. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 2, characterized in that: The sweat conduction component also includes a liquid storage tank opened in the connecting ring, and multiple groups of liquid conduction channels are symmetrically provided at the upper and lower positions of the liquid storage tank. The liquid conduction channels are opened in the connecting ring, the rear end of the liquid conduction channels contacts the front side of the sponge, and the front end of the liquid conduction channels is connected with the front side of the liquid storage tank. The liquid conduction channels are filled with liquid-absorbing fillers.

4. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 1, characterized in that: The connector assembly includes a dual-channel connector that is arranged to pass through the nasal mask body, and a first connecting end and a second connecting end that are connected to the dual-channel connector. The first connecting end is used to connect to the oxygen supply hose, and the second connecting end is used to connect to the end-tidal carbon dioxide collection tube. The first connecting end is arranged relative to the dual-channel connector, and the second connecting end and the dual-channel connector are arranged perpendicular to each other.

5. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 4, characterized in that: A separator for separating the airflow directions is provided in the dual-channel joint, and the separator is provided between the first connection end and the second connection end.

6. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 1, characterized in that: Two gas outlets are symmetrically arranged on the nasal mask body, and each gas outlet is provided with a plurality of air outlet holes arranged at intervals and covered with a circular film.

7. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 1, characterized in that: The operating assembly includes a left operating port of the bronchoscope and a right operating port of the bronchoscope, and both the left operating port and the right operating port of the bronchoscope are fixedly and tightly connected to the nasal mask body.

8. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy function according to claim 1, characterized in that: The nasal mask body is provided with a transversely arranged aluminum clip, and the nasal mask body is also provided with an elastic band, and the two ends of the elastic band are respectively connected to the rear edge of the nasal mask body.

Images