End-tidal carbon dioxide monitoring nasal mask with bronchofiberscope examination function

Abstract

The invention relates to the technical field of medical instruments, and discloses an end-tidal carbon dioxide monitoring nasal mask with a bronchofiberscope examination function, which comprises a nasal mask main body, a connector assembly and an operation assembly, the sealing assembly is composed of a sealing frame fixedly connected with the edge of the rear side of the nasal mask body and a sealing gasket arranged on the rear side of the sealing frame, the sealing gasket comprises a middle silica gel pad, U-shaped silica gel pads are arranged on the two sides of the middle silica gel pad, and the other sides of the two U-shaped silica gel pads are connected with arc-shaped silica gel pads respectively. And the other sides of the two groups of arc-shaped silica gel pads are fixed with the edge of the rear side of the sealing frame. According to the end-expiratory carbon dioxide monitoring nasal mask with the bronchofiberscope examination function, through inflation and deflation operation of the telescopic mechanism, the position of the middle silica gel pad can be flexibly adjusted, and when a bronchofiberscope is inserted, supporting force is provided for the middle silica gel pad through the fixing ring and the connecting ring, so that the overall stability of the nasal mask body can be kept.

Description

Technical Field

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

[0002] Fiberoptic bronchoscopy is to insert a slender bronchoscope into the lower respiratory tract of a patient through the mouth or nose, that is, through the glottis into the trachea, bronchi and more distal parts, directly observe the lesions of the trachea and bronchi, and perform corresponding examinations and treatments according to the lesions. Hypoxemia is a common complication during fiberoptic bronchoscopy, which may cause symptoms such as dyspnea and cyanosis. In order to prevent the occurrence of hypoxemia, it is necessary to perform oxygen inhalation on the patient, and at the same time monitor the end-tidal carbon dioxide partial pressure, which can detect the patient's hypoxia situation earlier and intervene in time, reduce the incidence of hypoxemia during the examination, ensure anesthesia safety, and improve the safety and reliability of bronchoscopy.

[0003] There is a synchronous oxygen supply mask for bronchial intubation detection disclosed in the prior art with the publication number CN217938860U, which includes a transparent mask body. The front surface of the transparent mask body is provided with an oxygen supply tube connector, and the oxygen supply end of the oxygen supply tube connector is communicated with an external oxygen supply device through an oxygen supply tube. A circular installation hole is opened on the front surface of the transparent mask body, and an insertion tube for inserting a fiberoptic bronchus is fixedly installed on the inner wall of the circular installation hole. A plastic rope corresponding to the insertion tube is fixedly connected to the front surface of the transparent mask body. Although the above technical solution can allow the fiberoptic bronchus to be inserted into the patient's nasal cavity or oral cavity through the two insertion tubes when performing a bronchoscopy examination on the patient, and when the patient shows hypoxia during the examination, the inside of the mask can be supplied with oxygen through an external oxygen supply device to ensure the safety of the patient, there are still some problems.

[0004] In the prior art, when the commonly used ordinary breathing mask is adapted to bronchoscopy examination, there is a problem of insufficient sealing performance. During the design and use of the ordinary breathing mask, it is often difficult to fit the facial contour of the patient. During actual use, the movements of the patient during the examination may cause gaps 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, making the monitored carbon dioxide value unable to truly reflect the actual situation of the patient, thus interfering with the accurate judgment of the patient's condition by medical staff and interfering with bronchoscopy examination. Secondly, due to the certain rigidity of the fiberoptic bronchoscope tube itself, when using an ordinary mask, the presence of the mask will limit the operation space and angle of the fiberoptic bronchoscope. During the insertion of the fiberoptic bronchoscope, the fiberoptic bronchoscope contacts the mask and applies 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 injury to the patient's respiratory tract, seriously reducing the safety and applicability of bronchoscopy examination. Summary of the Invention

[0005] The purpose of the present invention is to provide an end-tidal carbon dioxide monitoring nasal mask with a fiberoptic bronchoscope examination function to solve the problems that the ordinary breathing mask is difficult to fit the facial contour of the patient and the gaps between the mask and the face are caused by the movements of the patient during the examination, resulting in gas leakage as mentioned in the above background technology.

[0006] An end-tidal carbon dioxide monitoring nasal mask with a fiberoptic bronchoscope examination function provided by the present invention adopts the following technical solutions: An end-tidal carbon dioxide monitoring nasal mask with a fiberoptic bronchoscope examination function includes a nasal mask main body, a joint assembly and an operation assembly. A sealing assembly is provided at the rear edge of the nasal mask main body. The sealing assembly is composed of a sealing frame fixedly connected to the rear edge of the nasal mask main body and a sealing gasket provided at the rear of the sealing frame. The sealing gasket includes a middle silica gel pad. U-shaped silica gel pads are provided on both sides of the middle silica gel pad. The other sides of the two U-shaped silica gel pads are respectively connected with arc-shaped silica gel pads. The other sides of the two arc-shaped silica gel pads are fixedly connected to the rear edge of the sealing frame. A fixing ring is fixed on the side of the middle silica gel pad close to the sealing frame. An adapter ring is fixedly connected to the fixing ring. A telescopic mechanism capable of controlling the front-back movement of the middle silica gel pad is provided on the adapter ring; In the initial state, the rear sides of the middle silica gel pad and the arc-shaped silica gel pad are flush, and both are in contact with the patient's face. In the adjusted state, the U-shaped silica gel pads are in a contracted state, the middle silica gel pad and the arc-shaped silica gel pad are distributed front and back, and a double-layer hollow structure is formed between the two arc-shaped silica gel pads. At this time, only the middle silica gel pad is in contact with the patient's face.

[0007] Further, the telescopic mechanism includes an air chamber opened on the inner wall at the rear side of the nasal mask body. A slidable piston ring is provided in the air chamber. The piston ring and the connection ring are fixedly connected by a plurality of groups of connection columns distributed at equal intervals. Springs are provided on the connection columns, and two ends of each spring abut against the piston ring and the air chamber respectively; An inflation tube is connected through the nasal mask body in a penetrating manner. One end of the inflation tube communicates with the air chamber, and a sealing plug is hermetically inserted into the other end.

[0008] Further, the middle silica gel pad, the U-shaped silica gel pad and the arc-shaped silica gel pad are integrally formed. The thicknesses of the middle silica gel pad and the arc-shaped silica gel pad are greater than that of the U-shaped silica gel pad.

[0009] Further, a sweat guiding assembly is provided between the middle silica gel pad, the fixing ring and the connection ring. The sweat guiding assembly includes a plurality of ventilation holes opened on the fixing ring and a groove opened on the inner wall at the rear side of the fixing ring. A sponge is filled in the groove.

[0010] Further, the sweat guiding assembly further includes a liquid storage groove opened in the connection ring. A plurality of groups of liquid guiding channels are symmetrically arranged at the upper and lower positions of the liquid storage groove. The liquid guiding channels are opened in the connection ring. The rear ends of the liquid guiding channels are in contact with the front side of the sponge, and the front ends of the liquid guiding channels communicate with the front side position of the liquid storage groove. Absorbent fillers are filled in the liquid guiding channels.

[0011] Further, the joint assembly includes a double-pass joint penetrating through the nasal mask body, a first connection end and a second connection end penetratingly connected to the double-pass joint. The first connection end is used for connecting an oxygen delivery hose, and the second connection end is used for connecting an end-tidal carbon dioxide collection tube. Among them, the first connection end is arranged opposite to the double-pass joint, and the second connection end is arranged perpendicular to the double-pass joint.

[0012] Further, a partition piece for separating the air flow direction is arranged in the double-pass joint. The partition piece is arranged between the first connection end and the second connection end.

[0013] Further, two gas outlets are symmetrically arranged on the nasal mask body. A plurality of spaced-apart air holes are opened on each gas outlet, and a circular thin film is covered.

[0014] Further, the operation assembly includes a left bronchoscope operation port and a right bronchoscope operation port. The left bronchoscope operation port and the right bronchoscope operation port are both fixedly and hermetically connected to the nasal mask body.

[0015] Further, a horizontally arranged aluminum clip is arranged on the nasal mask body. An elastic band is also arranged on the nasal mask body, and two ends of the elastic band are respectively connected to the rear side edges of the nasal mask body.

[0016] Advantages of the present invention: 1. By providing a sealing component and a telescopic mechanism, through the inflation and deflation operations of the telescopic mechanism, the position of the middle silica gel pad can be flexibly adjusted. When the fibrobronchoscope is inserted, the supporting force provided by the fixing ring and the connecting ring to the middle silica gel pad helps to maintain the overall stability of the nasal mask body, preventing the nasal mask body from shaking or shifting when the fibrobronchoscope is inserted, effectively solving the problem of mutual interference between the fibrobronchoscope tube and the ordinary mask during the insertion and operation process. During the fibrobronchoscopy, the telescopic mechanism adjusts the state of the sealing gasket, and the double-layer hollow structure formed by the arc-shaped silica gel pad not only strengthens the sealing effect but also has good elasticity and buffering performance. When the patient makes head movements or facial muscle twitches due to discomfort, it can effectively reduce the pressure of the nasal mask body on the facial skin, facilitating the patient to better cooperate with the examination.

[0017] 2. By providing a sweat guiding component, during the fibrobronchoscopy, the patient may sweat due to factors such as nervousness, discomfort, or the examination environment. The sweat guiding component can timely absorb and guide the sweat, keeping the patient's face dry and preventing the sweat from accumulating at the double-layer hollow structure formed by the arc-shaped silica gel pad, causing discomfort to the patient's face. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a side view structural schematic diagram of the present invention; Figure 3 is a partial three-dimensional structural schematic diagram of the nasal mask body, sealing component and telescopic mechanism of the present invention; Figure 4 is a partial three-dimensional structural sectional schematic diagram of the nasal mask body, sealing component and telescopic mechanism of the present invention; Figure 5 is a partial three-dimensional structural sectional schematic diagram of the sealing gasket of the present invention; Figure 6 is a partial side view structural sectional schematic diagram of the nasal mask body, sealing frame, middle silica gel pad, U-shaped silica gel pad, arc-shaped silica gel pad, fixing ring, connecting ring, air chamber, piston ring, connecting column, spring, inflatable tube and sealing plug of the present invention; Figure 7 is of the present invention Figure 6 showing the schematic diagram of the contracted state of the side view structure at the middle silica gel pad, fixing ring and connecting ring in; Figure 8 is a partial three-dimensional structural sectional schematic diagram of the middle silica gel pad, U-shaped silica gel pad, arc-shaped silica gel pad, fixing ring, connecting ring and sweat guiding component of the present invention; Figure 9 is a rear view structural sectional schematic diagram of the double-pass joint, first connection end, second connection end and partition of the present invention.

[0019] In the figure: 1. Nasal mask body; 2. Connector assembly; 21. Dual-channel connector; 22. First connection end; 23. Second connection end; 24. Separator; 3. Operation assembly; 31. Left operation port for bronchofiberscope; 32. Right operation port for bronchofiberscope; 4. Sealing assembly; 41. Sealing frame; 42. Sealing gasket; 421. Middle silicone pad; 422. U-shaped silicone pad; 423. Arc-shaped silicone pad; 43. Fixed ring; 44. Connecting ring; 5. Telescopic mechanism; 51. Air cavity; 52. Piston ring; 53. Connecting column; 54. Spring; 55. Inflatable tube; 56. Sealing plug; 6. Sweat guide assembly; 61. Ventilation hole; 62. Groove; 63. Sponge; 64. Liquid storage tank; 65. Liquid guide channel; 66. Liquid absorption filler; 7. Gas outlet; 8. Aluminum clip; 9. Elastic band. Specific embodiments

[0020] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the specification.

[0021] Referring to Figures 1 - 5 , the present invention provides an end-tidal carbon dioxide monitoring nasal mask with a bronchofiberscope examination function, including a nasal mask body 1, a connector assembly 2, and an operation 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 on 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. Arc-shaped silicone pads 423 are respectively connected to the other sides of the two U-shaped silicone pads 422. The other sides of the two arc-shaped silicone pads 423 are fixedly connected to the rear edge of the sealing frame 41. A fixed 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 fixed ring 43. A telescopic mechanism 5 capable of controlling the forward and backward movement of the middle silicone pad 421 is provided on the connecting ring 44.

[0022] Specifically, the telescopic mechanism 5 includes an air chamber 51 formed on the inner wall at the rear side of the nasal mask body 1. A slidable piston ring 52 is arranged in the air chamber 51. The piston ring 52 and the connection ring 44 are fixedly connected through a plurality of groups of connection columns 53 distributed at equal intervals. A spring 54 is arranged on the connection column 53. Both ends of the spring 54 respectively abut against the piston ring 52 and the air chamber 51. Among them, the connection column 53 movably penetrates through the sealing frame 41. An inflation tube 55 is connected through the nasal mask body 1 in a penetrating manner. One end of the inflation tube 55 communicates with the air chamber 51, and a sealing plug 56 is hermetically inserted at the other end. During bronchoscopy, the telescopic mechanism 5 can flexibly adjust the position of the middle silica gel pad 421 according to the needs of the examination. In the initial state, the air chamber 51 is in an inflated state. At this time, the sealing plug 56 is hermetically inserted at the other end of the inflation tube 55. The piston ring 52 controls the connection column 53, the connection ring 44 and the fixing ring 43 to move towards the rear side of the nasal mask body 1, so that the fixing ring 43 provides a supporting force for the middle silica gel pad 421. The middle silica gel pad 421 is flush with the rear side of the arc-shaped silica gel pad 423. In the adjustment state, the sealing plug 56 is pulled out, and the air chamber 51 is in a deflated state. Under the elastic action of the spring 54, the piston ring 52, the connection column 53, the connection ring 44 and the fixing ring 43 are controlled to move towards the direction of the sealing frame 41, so that the middle silica gel pad 421 and the arc-shaped silica gel pad 423 are distributed front and back.

[0023] It should be noted that the shape of the sealing frame 41 is adapted to the rear edge of the nasal mask body 1, which plays a role in connecting and fixing each part of the sealing gasket 42. The middle silica gel pad 421 is located in the middle area at 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 silica gel pad 421 and the arc-shaped silica gel pad 423 is greater than the thickness of the U-shaped silica gel pad 422, and there is a gap between the U-shaped silica gel pad 422 and the arc-shaped silica gel pad 423, which can better adapt to the curve change during the telescopic movement of the middle silica gel pad 421. The rear side of the arc-shaped silica gel pad 423 is arranged in a circular arc shape, which fits the facial contour of the patient. The middle silica gel pad 421, the U-shaped silica gel pad 422 and the arc-shaped silica gel pad 423 are integrally formed, which can fully fit the patient's face and reduce the possibility of gas leakage.

[0024] Refer to Figures 6 - 7 , the sealing gasket 42 has two states. In the initial state, the rear sides of the middle silica gel pad 421 and the arc-shaped silica gel pad 423 are flush, and both are in contact with the patient's face. When the fiber bronchoscope is inserted, it comes into contact with the nasal mask body 1 and exerts a certain force. At this time, the supporting force provided by the fixing ring 43 and the connection ring 44 for the middle silica gel pad 421 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 fiber bronchoscope is inserted.

[0025] In the adjusted state, the connecting ring 44 drives the fixed ring 43 to move towards 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 pads 423 are distributed front and back. At this time, a double-layer hollow structure is formed between the two arc-shaped silicone pads 423, and only the middle silicone pad 421 contacts the patient's face. During the fiberoptic bronchoscopy examination, the patient may make head movements or facial muscle twitches due to discomfort. The double-layer hollow structure formed by the arc-shaped silicone pads 423 has good elasticity and buffering performance, reducing the compression of the nasal mask body 1 on the facial skin and improving the patient's comfort. At the same time, the double-layer hollow structure formed by the arc-shaped silicone pads 423 can better fit the unevenness of the facial contour, reducing the gaps caused by the mismatch of the facial contour, thereby enhancing the sealing effect of the nasal mask body 1.

[0026] Refer to Figure 8 , a sweat guiding component 6 is provided between the middle silicone pad 421, the fixed ring 43 and the connecting ring 44. Specifically, the sweat guiding component 6 includes a plurality of groups of ventilation holes 61 opened on the fixed ring 43 and a groove 62 opened on the inner wall of the rear side of the fixed ring 43. A sponge 63 is filled in the groove 62. When the patient's face sweats, the sweat will enter the groove 62 on the inner wall of the rear side of the fixed ring 43 through the ventilation holes 61, and the sponge 63 filled in the groove 62 will quickly adsorb the sweat, preventing the sweat from accumulating on the patient's face and causing discomfort.

[0027] Furthermore, the sweat guiding component 6 further includes a liquid storage tank 64 opened in the connecting ring 44. A plurality of groups of liquid guiding channels 65 are symmetrically arranged at the upper and lower positions of the liquid storage tank 64. The liquid guiding channels 65 are opened in the connecting ring 44. The rear end of the liquid guiding channel 65 contacts the front side of the sponge 63, and the front end of the liquid guiding channel 65 communicates with the front side position of the liquid storage tank 64. An absorbent filler 66 is filled in the liquid guiding channel 65. When the sweat adsorbed by the sponge 63 reaches a certain amount, the 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. And the front end of the liquid guiding channel 65 communicates with the front side position of the liquid storage tank 64, so the sweat collected in the liquid storage tank 64 will not flow back.

[0028] Refer to Figure 2 , the connector assembly 2 includes a double-pass connector 21 that is communicated with the nasal mask body 1, and a first connection end 22 and a second connection end 23 that are communicated and connected with the double-pass 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. Among them, the first connection end 22 is arranged opposite to the double-pass connector 21, and the second connection end 23 is arranged perpendicular to the double-pass connector 21.

[0029] Among them, 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.

[0030] Furthermore, referring to Figure 9 , a separator 24 for separating the air flow direction is provided in the double-channel connector 21. The separator 24 is arranged between the first connection end 22 and the second connection end 23. The cavity in the double-channel connector 21 is bisected by the separator 24. The separator 24 allows oxygen to enter the patient's nasal cavity through the first connection end 22, and the end-tidal carbon dioxide collection tube can detect the carbon dioxide concentration exhaled by the patient from the second connection end 23 at any time and conveniently.

[0031] Among them, two gas outlets 7 are symmetrically arranged on the nasal mask body 1. The two gas outlets 7 are located on the left and right sides of the nasal mask body 1 respectively. Among them, a plurality of spaced-apart air holes are provided on each gas outlet 7, and a circular thin film is covered. The thin film is closely attached to the edge of the air hole. The thin film is a single-hole double-sided one-way ventilation structure. Under normal circumstances, due to the barrier of the thin film, the outside air cannot enter the inside of the nasal mask, effectively maintaining the airtight environment inside the nasal mask and 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 open the thin film, and the waste gas can be discharged. At the same time, the outside atmospheric pressure will cause the thin film to open slightly outward, enabling the patient to inhale peripheral air and ensuring the patient's basic breathing needs.

[0032] Among them, the operation component 3 includes a left bronchoscope operation port 31 and a right bronchoscope operation port 32. The left bronchoscope operation port 31 and the right bronchoscope operation port 32 are fixedly and airtightly connected to the nasal mask body 1 for the insertion and inspection and treatment of the bronchoscope tube. The inner diameter of the left bronchoscope operation port 31 is larger than that of the right bronchoscope operation port 32. The inner diameter of the left bronchoscope operation port 31 is 1 cm, and the inner diameter of the right bronchoscope operation port 32 is 0.6 cm. When the bronchoscope tube is inserted into the left bronchoscope operation port 31, the sealing cover of the left bronchoscope operation port 31 is cut open. When the bronchoscope tube is inserted into the right bronchoscope operation port 32, the sealing cover of the right bronchoscope operation port 32 is cut open to achieve the smooth insertion of the bronchoscope body.

[0033] Among them, a horizontally arranged aluminum clip 8 is provided on the nasal mask body 1. The aluminum clip 8 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 clip 8. An elastic band 9 is also provided on the nasal mask body 1. The two ends of the elastic band 9 are respectively connected to the rear side edge of the nasal mask body 1. When in use, the elastic band 9 is adjusted for adaptation and fixation.

[0034] The working principle of the end-tidal carbon dioxide monitoring nasal mask with bronchoscope examination function provided by the present invention is as follows: In the preparation stage, the nasal mask body 1 is worn on the patient's face through the elastic band 9. The horizontally arranged aluminum clip 8 can be pinched to make the nasal mask body 1 fit more closely to the patient's nose. At this time, the sealing assembly 4 is in the initial state. The rear sides of the middle silicone pad 421 and the arc-shaped silicone pad 423 are flush and both are in contact with the patient's face. The U-shaped silicone pad 422 is located between them and jointly fits closely to the facial contour to reduce gas leakage. At the same time, the air chamber 51 of the telescopic mechanism 5 is in an inflated state. The air charging tube 55 is sealed by the sealing plug 56. Under the action of air pressure, the piston ring 52 drives the connection ring 44 and the fixed ring 43 to move towards the rear side of the nasal mask body 1 through multiple groups of equally spaced connecting columns 53. The fixed ring 43 provides a supporting force for the middle silicone pad 421 to ensure the stability of the sealing gasket 42; Before the fiber bronchoscope is inserted, the double-channel joint 21 is connected to the nasal mask body 1. Its first connection end 22 is connected to the oxygen delivery hose, and the second connection end 23 is connected to the end-tidal carbon dioxide collection tube. The partition piece 24 in the double-channel joint 21 divides the cavity equally, so that oxygen enters the patient's nasal cavity from the first connection end 22, and the end-tidal carbon dioxide collection tube can detect the carbon dioxide concentration exhaled by the patient at any time through the second connection end 23. When performing the fiber bronchoscope tube insertion operation, the left operation port 31 or the right operation port 32 of the fiber bronchoscope can be selected, and its sealing cover is cut open, and the fiber bronchoscope tube is inserted. When the fiber bronchoscope tube is inserted, it contacts the nasal mask body 1 and applies a force. At this time, the supporting force provided by the fixed ring 43 and the connection 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; During the fiber bronchoscope examination, it is necessary to adjust the state of the sealing gasket 42. The sealing plug 56 is pulled out, the air chamber 51 is deflated, and the elastic action of the spring 54 pushes the piston ring 52, driving the connecting column 53, the connection ring 44 and the fixed ring 43 to move towards 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 arc-shaped silicone pads 423 form a double-layer hollow structure and contact the patient's face to enhance the sealing effect.

[0035] During the whole examination process, sweat enters the groove 62 through multiple groups of air holes 61 on the fixed ring 43 and is quickly adsorbed by the sponge 63 filled in the groove 62. When the sweat adsorbed by the sponge 63 reaches a certain amount, the liquid-absorbing filler 66 in the liquid conduction channel 65 in the connection ring 44 absorbs the sweat from the sponge 63 and guides it to the liquid storage tank 64 for storage through capillary action.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An end-tidal carbon dioxide monitoring nasal mask with bronchoscopy function, comprising a nasal mask body, a connector assembly and an operation assembly, characterized in that: A sealing component is provided at the rear edge of the nasal mask body. The sealing component consists of a sealing frame fixedly connected to the rear edge of the nasal mask body and a sealing gasket provided at the rear of the sealing frame. The sealing gasket includes a middle silica gel pad. U-shaped silica gel pads are provided on both sides of the middle silica gel pad. The other sides of the two groups of U-shaped silica gel pads are respectively connected to arc-shaped silica gel pads. The other sides of the two groups of arc-shaped silica gel pads are both fixedly connected to the rear edge of the sealing frame. A fixing ring is fixed on the side of the middle silica gel pad close to the sealing frame. An adapter ring is fixedly connected to the fixing ring. A telescopic mechanism capable of controlling the forward and backward movement of the middle silica gel pad is provided on the adapter ring; In the initial state, the rear sides of the middle silica gel pad and the arc-shaped silica gel pad are flush, and both are in contact with the patient's face. In the adjusted state, the U-shaped silica gel pads are in a contracted state, the middle silica gel pad and the arc-shaped silica gel pad are distributed front and back, and a double-layer hollow structure is formed between the two groups of arc-shaped silica gel pads. At this time, only the middle silica gel pad is in contact with the patient's face.

2. The end-tidal carbon dioxide monitoring nasal mask with bronchoscopy examination function according to claim 1, characterized in that: The telescopic mechanism includes an air cavity opened on the inner wall at the rear of the nasal mask body. A slidable piston ring is provided in the air cavity. The piston ring and the adapter ring are fixedly connected by a plurality of groups of connecting columns arranged at equal intervals. Springs are provided on the connecting columns, and the two ends of the springs respectively abut against the piston ring and the air cavity; An inflation tube is connected to the nasal mask body in a penetrating manner. One end of the inflation tube is in communication with the air cavity, and the other end is hermetically inserted with a sealing plug.

3. The end-tidal carbon dioxide monitoring nasal mask with bronchoscopy function according to claim 1, characterized in that: The middle silica gel pad, the U-shaped silica gel pads and the arc-shaped silica gel pads are integrally formed. The thickness of the middle silica gel pad and the arc-shaped silica gel pads is greater than the thickness of the U-shaped silica gel pads.

4. The end-tidal carbon dioxide monitoring nasal mask with bronchoscopy examination function according to claim 1, characterized in that: A sweat guiding component is provided between the middle silica gel pad, the fixing ring and the adapter ring. The sweat guiding component includes a plurality of ventilation holes opened on the fixing ring and a groove opened on the inner wall at the rear of the fixing ring. A sponge is filled in the groove.

5. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy examination function according to claim 4, characterized in that: The sweat guiding component further includes a liquid storage tank opened in the adapter ring. A plurality of liquid guiding channels are symmetrically arranged at the upper and lower positions of the liquid storage tank. The liquid guiding channels are opened in the adapter ring. The rear end of the liquid guiding channel is in contact with the front side of the sponge, and the front end of the liquid guiding channel communicates with the front side position of the liquid storage tank. The liquid guiding channels are filled with liquid absorbing fillers.

6. The nasal mask for end-tidal carbon dioxide monitoring with fiberoptic bronchoscopy examination function according to claim 1, wherein: The joint component includes a double-pass joint penetrating through the nasal mask body and a first connection end and a second connection end penetratingly connected to the double-pass joint. The first connection end is used for connecting an oxygen delivery hose, and the second connection end is used for connecting an end-tidal carbon dioxide collection tube. Among them, the first connection end is arranged opposite to the double-pass joint, and the second connection end is arranged perpendicular to the double-pass joint.

7. The end-tidal carbon dioxide monitoring nasal mask with bronchoscopy function according to claim 6, characterized in that: A separating sheet for separating the air flow direction is arranged in the double-pass joint. The separating sheet is arranged between the first connection end and the second connection end.

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

9. The nasal mask for end-tidal carbon dioxide monitoring with bronchoscopy examination function according to claim 1, wherein: The operation component includes a left operation port for a fiber bronchoscope and a right operation port for a fiber bronchoscope. The left operation port for a fiber bronchoscope and the right operation port for a fiber bronchoscope are both fixedly and hermetically connected to the nasal mask body.

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

Images