Bronchoscope negative pressure protective cover

Abstract

The bronchoscope negative pressure protective cover disclosed in the application comprises a bottom shell formed with a ball head structure, the bottom shell is provided with an abutting surface for abutting against a face; a collecting cover, an inner surface of the collecting cover is provided with a negative pressure collecting unit, the collecting cover is provided with a ball socket structure, along a generatrix of a side wall of the collecting cover in a direction close to an inlet of the collecting cover, the collecting cover is sequentially formed with a guide groove penetrating through a cover wall of the collecting cover and an adjusting interval, two ends of the adjusting interval respectively extend to the guide groove and the inlet of the collecting cover, the collecting cover is elastic to increase the adjusting interval, the ball head structure and the ball socket structure are assembled or disassembled; locking pieces connected to two sides of the adjusting interval, the locking pieces enable the ball socket structure and the ball head structure to be connected in a ball hinge, and the locking pieces can also lock the rotation of the ball socket structure relative to the ball head structure by using the friction force between the ball socket structure and the ball head structure; a working piece in sliding connection with the guide groove, the working piece is provided with a working hole for the bronchoscope to pass through, and the working piece can adsorb the splashed secretions when coughing during bronchoscopy.

Description

Technical Field

[0001] This application relates to the field of bronchoscopy technology, specifically to a bronchoscopy negative pressure protective cover. Background Technology

[0002] Bronchoscopy is a medical procedure used to directly observe the inside of the trachea and bronchi, and is mainly used for the diagnosis and treatment of respiratory diseases.

[0003] The pharynx, trachea, and bronchial mucosa are richly supplied with nerve endings. The entry of foreign objects (such as a bronchoscope) directly stimulates these areas, triggering a cough reflex, especially when the bronchoscope passes through the glottis or touches the tracheal wall, potentially causing a brief but intense cough. Coughing expels saliva and blood-tinged droplets, which can easily contaminate healthcare workers and the surrounding environment, posing a potential risk of disease transmission. Even with a standard protective shield, liquids cannot be contained, allowing them to flow and drip into the surrounding environment, still posing a risk of disease transmission. While a face mask used in conjunction with a bronchoscope can block the spread of saliva and blood-tinged droplets, if the patient coughs violently, liquid splashed onto the mask may drip back onto the patient's face, compromising hygiene. Summary of the Invention

[0004] To reduce the possibility of disease transmission, prevent the splashing of saliva and blood droplets from contaminating the surrounding environment, and ensure the smooth conduct of bronchoscopy, this application provides a bronchoscopy negative pressure protective cover.

[0005] A negative pressure protective cover for a bronchoscopy includes: a base shell, the upper outer wall of which has a ball-head structure, and the lower end face of which has a contact surface for contacting a face; the upper and lower end faces of the base shell are connected; and a collection hood, the inner surface of which has a negative pressure collection unit, the inner surface of which has an inlet having a ball-and-socket structure for ball-and-socket connection with the ball-head structure, and along a generatrix of the side wall of the collection hood near the inlet, the collection hood sequentially has a guide groove penetrating the wall of the collection hood and an adjustment interval, the two ends of which extend to the guide groove and the adjustment interval, respectively. The inlet of the collection hood is elastic, allowing for an increase in the adjustment interval. The ball-and-socket structure can be assembled or disassembled with the ball-and-head structure, passing over it. A locking element connects to both sides of the adjustment interval, limiting its expansion and maintaining a ball-and-socket connection between the ball-and-socket structure and the ball-and-head structure. It also reduces the adjustment interval and uses friction between the ball-and-socket structure and the ball-and-head structure to lock the rotation of the ball-and-socket structure relative to the ball-and-head structure. A working piece is slidably connected to the guide groove and can move along it. The working piece has a working hole through which the gas endoscope passes.

[0006] When using this application, the collection hood is not connected to the bottom shell temporarily. The collection hood can be first fitted onto the bronchoscope through the working hole. Then, the distal end of the bronchoscope is inserted into the mouth or nasal cavity exposed to the outside through the inner cavity of the bottom shell. Subsequently, the collection hood is connected to the ball head structure through the ball socket structure. The negative pressure collection unit collects the saliva, blood droplets, etc. splashed by the patient. The contact surface can be stably attached to the patient's face to prevent droplets from leaking from the bottom. The ball joint structure allows the collection hood to rotate freely in multiple directions in space. The working component connected to the bronchoscope can also move along the generatrix of the collection hood side wall via the guide groove, thereby changing the insertion position of the bronchoscope. The insertion angle of the bronchoscope can be adjusted according to the patient's specific physiological structure, reducing patient discomfort caused by improper angle. Furthermore, the collection hood can rotate around the center of the ball joint through the bottom shell worn on the patient's face, and the working port can move along the guide groove. When the patient coughs, causing slight head movements, the collection hood can change its position relative to the bottom shell, changing the position of the bronchoscope relative to the body. This allows the bronchoscope to adapt to changes in head position. Moreover, the friction between the components keeps the instantaneous speed of the bronchoscope relative to the face low, thus the working port can help maintain the position of the bronchoscope relative to the patient, reducing the movement of the bronchoscope relative to the patient and avoiding excessive movement of the bronchoscope in the patient's nasal cavity or oral cavity, which could cause significant discomfort.

[0007] In one embodiment of this application, the negative pressure collection unit includes a sponge covering the inner surface of the collection cover and a negative pressure tube disposed within the sponge. The negative pressure tube is provided with a plurality of negative pressure holes, and the plurality of negative pressure holes form a negative pressure area adapted to the sponge.

[0008] As a porous absorbent material, the sponge can quickly absorb splashed liquid and prevent it from flowing and accumulating along the inner wall of the enclosure. Multiple negative pressure holes distributed on the negative pressure pipe ensure that the entire sponge area is uniformly subjected to negative pressure, improving the efficiency of liquid extraction. The dual effects of negative pressure adsorption and sponge physical adsorption can effectively intercept fine droplets and bloody secretions, preventing droplet pollution of the surrounding environment.

[0009] In one embodiment of this application, a negative pressure tank is provided on the outside of the collection hood, and a negative pressure pipe is connected to the upper end of the negative pressure tank.

[0010] Droplets are guided into a negative pressure tank located outside the collection hood via a negative pressure tube, achieving centralized and sealed storage of contaminants. This prevents contaminants from re-contaminating the patient's face when the amount of liquid splashed by the patient is too large, thus ensuring hygiene.

[0011] In one embodiment of this application, the bronchoscope negative pressure protective cover further includes a controller, a sound monitoring unit, and a negative pressure pump connected to the upper end of the negative pressure tank; the sound monitoring unit is electrically connected to the controller and is able to send sound signals to the controller; the negative pressure pump is electrically connected to the controller, and the controller controls the operation of the negative pressure pump according to the sound signals.

[0012] The negative pressure pump is connected to the top of the negative pressure tank. Due to gravity, contaminants cannot enter the negative pressure pump through the top of the tank, thus protecting the pump from contamination. A sound monitoring unit detects coughs or high-intensity airflow bursts in real time, triggering the controller to start the negative pressure pump for "on-demand suction." This avoids resource waste or noise interference caused by prolonged operation of the negative pressure pump and prevents continuous airflow over the patient's face, improving patient comfort.

[0013] In one embodiment of this application, the bottom shell is provided with a plurality of ventilation holes along its circumference.

[0014] Ventilation vents ensure adequate airflow for the patient's normal breathing. During suction in the negative pressure collection unit, outside air enters the collection hood through the vents, replenishing the air inside. Because the air pressure inside the collection hood is lower than the outside air pressure, it effectively prevents contaminants from entering the outside through the vents. Air expelled into the collection hood by the patient's cough can also enter the outside through the vents, promptly balancing the pressure difference between the inside and outside of the collection hood.

[0015] In one embodiment of this application, the working component includes a working tube with a working hole and a working nut threadedly connected to the working tube. The working tube includes a limiting section disposed inside the collection hood and a connecting section passing through the guide groove to enter the outside along its axial direction. The working nut is threadedly connected to the connecting section and can clamp the cover of the collection hood with the limiting section, thereby locking the position of the working component relative to the guide groove by friction.

[0016] Users can lock the position of the working part relative to the guide groove as needed, and lock the position of the collection cover relative to the bottom shell by locking the locking device, so that the position of the working hole relative to the mouth or nasal cavity is fixed. Thus, during bronchoscopy, the working hole can reduce the traction of the bronchoscopy on the mouth or nasal cavity, and eliminate the need for other medical staff to assist in fixing the position of the bronchoscopy.

[0017] In one embodiment of this application, the working part is further provided with a locking hole communicating with the working hole along the radial direction of the working hole, and a locking bolt is threadedly connected to the locking hole.

[0018] After the locking bolt is screwed into the locking hole, it presses against the outer wall of the bronchoscope, using friction to prevent the bronchoscope from sliding relative to the working hole. The operator can use or release the locking bolt to lock the bronchoscope as needed.

[0019] In one embodiment of this application, an elastic pad is provided at the end of the locking bolt near the working hole.

[0020] In one embodiment of this application, the surface of the ball-and-socket structure and / or the surface of the ball-and-head structure is provided with a friction layer.

[0021] The friction layer can be textured, coated, or silicone-coated to increase the friction coefficient of the ball joint contact surface formed by the ball-and-socket structure and the ball-and-head structure. When the locking mechanism reduces the adjustment interval and locks the relative position of the ball-and-socket structure and the ball-and-head structure, the friction layer can prevent the collection hood from rotating relative to the bottom shell under its own weight or external force, thus avoiding loss of control of the bronchoscope.

[0022] In one embodiment of this application, the locking member is an adjusting bolt, which is perpendicular to the extension direction of the adjusting interval and connected to both sides of the adjusting interval so that the gap of the adjusting interval can be reduced when the adjusting bolt rotates around its own axis. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 This is a schematic structural diagram of one embodiment of the present application;

[0025] Figure 2 This is a schematic structural diagram of one embodiment of the collection cover in this application;

[0026] Figure 3 This is a schematic diagram illustrating one embodiment of the working component in this application;

[0027] Figure 4 This is a schematic structural diagram of one embodiment of the present application where the working part is disposed in the guide groove;

[0028] Figure 5 This is a schematic diagram of one embodiment of the ball joint structure and ball socket structure in this application.

[0029] Figure 6 This is a schematic structural diagram of one embodiment of the collection cover in this application when it is in a position relative to the bottom shell via a ball joint;

[0030] Figure 7 This is a schematic diagram illustrating one embodiment of the negative pressure collection unit in this application;

[0031] Figure 8 This is a schematic diagram of one embodiment of the controller of this application being electrically connected to a negative pressure pump and a sound monitoring unit.

[0032] Label Explanation:

[0033] 100. Bottom shell; 101. Ball joint structure; 102. Surface against the body; 103. Ventilation hole; 104. Binding ring;

[0034] 200. Collection hood; 201. Ball-and-socket structure; 202. Guide groove; 203. Adjustment interval; 204. Adjustment bolt; 205. Negative pressure pipe; 206. Negative pressure hole; 207. Negative pressure tank; 208. Sponge; 209. Sealing sleeve;

[0035] 300. Working part; 301. Working hole; 302. Working tube; 303. Restricting section; 304. Connecting section; 305. Mating section; 306. Working nut; 307. Locking bolt;

[0036] 401. Controller; 402. Negative pressure pump; 403. Sound monitoring unit. Detailed Implementation

[0037] To provide a clearer understanding of the technical features, objectives, and effects of this application, specific embodiments of this application are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0038] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0039] To keep the drawings concise, only the parts relevant to this application are shown schematically in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components with the same structure or function is shown schematically, or only one of them is labeled.

[0040] See Figure 1 A negative pressure protective cover for a bronchoscope includes a base shell 100, a collection hood 200, a working component 300, and a locking component.

[0041] See Figure 1The upper outer wall of the base shell 100 has a ball-shaped structure 101. The upper and lower surfaces of the base shell 100 are connected. The lower surface of the base shell 100 has a contact surface 102 that can fit against the face. In use, the patient can use the binding rings 104 on the left and right sides of the base shell 100 in conjunction with a headband or other components. The headband is connected to the binding rings 104, thereby wearing the base shell 100 on the face. The inner cavity of the base shell 100 covers the mouth and nose. The mouth and nose are connected to the outside through the inner cavity of the base shell 100. Those skilled in the art will understand that the base shell 100 can be made of materials such as polyurethane, which has the characteristic of being lightweight. Furthermore, the part of the base shell 100 that contacts the face can be made of elastic materials such as rubber or silicone to improve the comfort of the patient when wearing it.

[0042] See Figure 2 Along a generatrix of the sidewall of the collection hood 200, near the inlet of the collection hood 200, the collection hood 200 is sequentially formed with a guide groove 202 penetrating the wall of the collection hood 200 and an adjustment interval 203. The extension direction of the guide groove 202 and the adjustment interval 203 extends along the generatrix of the sidewall of the collection hood 200. The working piece 300 is slidably connected to the guide groove 202 and can move along the guide groove 202. See [reference needed] Figures 1 to 4 The working part 300 is provided with a working hole 301 for the bronchoscope to pass through. Therefore, when using this application, the bronchoscope is first passed through the working hole 301, and then the distal end of the bronchoscope, which has passed through the collection cover 200, is inserted into the nasal cavity or oral cavity exposed to the outside through the inner cavity of the bottom shell 100. The working part 300 can move along the guide groove 202 to change the position of the working hole 301 relative to the collection cover 200. This makes it convenient for medical staff to adjust the insertion angle of the bronchoscope and to find the position of the nasal cavity or oral cavity.

[0043] Then see Figure 1 , Figure 4 , Figure 5 The collection hood 200 utilizes a ball-and-socket structure 201 formed on the inner surface of its inlet, which can be ball-jointed to the ball-head structure 101, to connect the collection hood 200 and the base shell 100. This allows the bronchoscope to be inserted into the trachea. The negative pressure collection unit on the inner surface of the collection hood 200 collects fine droplets and bloody secretions expelled during coughing, preventing contamination of the surrounding environment. Further details can be found in [link to documentation]. Figure 1 , Figure 4Sealing sleeves 209 are provided on both sides of the extension direction of the guide groove 202. The sealing sleeves 209 can be formed of elastic materials such as rubber and silicone. The two sealing sleeves 209 can close together to seal the inner cavity of the collection hood 200. The bronchoscope passing through the working hole 301 can push open the sealing sleeves 209 to enter the collection hood 200. Other areas of the sealing sleeves 209 can continue to close, sealing the inner cavity of the collection hood 200 and connecting it to the outside through the guide groove 202, preventing fine droplets and bloody secretions from entering the outside environment through the guide groove 202 and polluting the surrounding environment.

[0044] The ball joint structure allows the collection hood 200 to rotate freely in multiple directions relative to the base shell 100 within the space. The working component 300, connected to the bronchoscope, can also move along the generatrix of the side wall of the collection hood 200 via the guide groove 202, thereby changing the insertion position of the bronchoscope. This allows for adjustment of the bronchoscope insertion angle according to the patient's specific physiological structure, reducing patient discomfort caused by improper angles. Furthermore, with the base shell 100 worn on the patient's face, the collection hood 200 can rotate around the center of the ball joint, and the working hole 301 can move along the guide groove 202. Due to friction between the components, when the patient coughs, causing slight head movements, the base shell 100 fixed to the patient's face can move with the patient's head. The working hole 301 helps maintain the position of the bronchoscope relative to the patient, reducing the movement of the bronchoscope relative to the patient and preventing excessive movement of the bronchoscope in the patient's nasal cavity or oral cavity, which could cause significant discomfort.

[0045] To facilitate the ball joint connection between the collection cover 200 and the bottom shell 100, this application provides an adjustment interval 203 on the side wall of the collection cover 200. The two ends of the adjustment interval 203 extend to the guide groove 202 and the inlet of the collection cover 200, respectively. The collection cover 200 can be made of materials such as polyurethane and has a certain elasticity. When the ball joint connection between the collection cover 200 and the bottom shell 100 is made, an external force is applied to increase the adjustment interval 203. The ball socket structure 201 can pass over the ball head structure 101 and be assembled with the ball head structure 101. Of course, the ball socket structure 201 can also be disassembled from the ball head structure 101 by increasing the adjustment interval 203, so as to separate the collection cover 200 and the bottom shell 100.

[0046] The locking element is connected to both sides of the adjustment interval 203. The locking element restricts the expansion of the adjustment interval 203, ensuring a ball joint connection between the ball-and-socket structure 201 and the ball-and-head structure 101. It also reduces the adjustment interval 203 and locks the rotation of the ball-and-socket structure 201 and the ball-and-head structure 101. In one embodiment of this application, the locking element is an adjusting bolt 204. The adjusting bolt 204 is perpendicular to the extending direction of the adjustment interval 203 and is connected to both sides of the adjustment interval 203. This allows the adjusting bolt 204 to reduce the gap in the adjustment interval 203 when rotating around its own axis. The adjusting bolt 204 can be rotatably connected to one side of the adjustment interval 203 and threadedly connected to the other side of the adjustment interval 203. For example, with... Figure 2 Describing the direction in the middle, the adjusting bolt 204 is threadedly connected to the screw hole on the left side of the adjusting interval 203. The right end of the adjusting bolt 204 abuts against the right side of the adjusting interval 203. The adjusting bolt 204 can limit the two sides of the adjusting interval 203 from moving away from each other, preventing the gap of the adjusting interval 203 from increasing. The ball-and-socket structure 201 passes over the ball-and-head structure 101 and disengages from the ball-and-socket structure 101. The ball-and-socket structure 201 and the ball-and-head structure 101 are released from the ball-and-socket connection, so that the ball-and-socket structure 201 and the ball-and-head structure 101 remain in a ball-and-socket connection. When the adjusting bolt 204 rotates, it pulls the two sides of the adjusting interval 203 closer together, allowing the ball-and-socket structure 201 to fit more closely to the ball-and-socket structure 101. This increases the pressure between the ball-and-socket structure 201 and the ball-and-socket structure 101, and consequently, the friction between them. This friction is then used to lock the rotation of the ball-and-socket structure 201 relative to the ball-and-socket structure 101. (See also...) Figure 1 , Figure 5 , Figure 6 When it is necessary to disconnect the ball socket structure 201 and the ball head structure 101, the adjusting bolt 204 can disconnect the threaded connection, thereby removing the restriction on the expansion of the adjustment interval 203 and allowing the ball socket structure 201 and the ball head structure 101 to be separated. Alternatively, the adjusting bolt 204 can be a double-ended bolt with threads having different directions at both ends. The two ends of the adjusting bolt 204 are threaded to both sides of the adjustment interval 203, allowing the adjusting bolt 204 to expand or shrink the adjustment interval 203 as it rotates around its own axis in either the forward or reverse direction. The locking element can also be other structures, such as an adjustable and maintainable jaw clamping device, which will not be elaborated upon here.

[0047] Furthermore, in one embodiment of this application, a friction layer is provided on the surface of the ball-and-socket structure 201 and / or the surface of the ball-and-head structure 101. The friction layer may be in the form of a texture, coating, or silicone coating, etc., to increase the friction coefficient of the ball-and-socket contact surface formed by the ball-and-socket structure 201 and the ball-and-head structure 101. When the locking member reduces the adjustment interval 203 and locks the relative position of the ball-and-socket structure 201 and the ball-and-head structure 101, the friction layer can prevent the collection cover 200 from rotating relative to the bottom shell 100 under its own weight or external force, thus avoiding loss of control of the bronchoscope.

[0048] After determining the insertion angle of the bronchoscope, the locking mechanism can be used to lock the position of the collection hood 200 relative to the base shell 100. Further details can be found in [link to documentation]. Figure 1 In one embodiment of this application, the working component 300 includes a working tube 302 with a working hole 301 and a working nut 306 threadedly connected to the working tube 302. See also... Figure 4 The working tube 302 includes, along its axial direction, a limiting section 303 located inside the collecting cover 200 and a connecting section 304 passing through the guide groove 202 and entering the outside. The portion of the connecting section 304 located on the outside has an external thread that is threaded to the working nut 306. The working nut 306 is threaded to the connecting section 304. The diameter of the working nut 306 and the diameter of the limiting section 303 are larger than the width of the guide groove 202. When the working nut 306 rotates, it can approach the limiting section 303 and clamp the cover of the collecting cover 200 with the limiting section 303, using friction to lock the position of the working part 300 relative to the guide groove 202. When the working nut 306 rotates in the opposite direction, the working nut 306 moves away from the limiting section 303, at which time the working tube 302 can move freely along the guide groove 202.

[0049] The user can lock the position of the working part 300 relative to the guide groove 202 as needed, and lock the position of the collection cover 200 relative to the base shell 100 using the locking device. This fixes the position of the working hole 301 relative to the mouth or nasal cavity, thereby reducing the traction of the bronchoscope on the mouth or nasal cavity during bronchoscopy and eliminating the need for other medical personnel to assist in fixing the position of the bronchoscope. The working nut 306 can cooperate with the locking device. After adjusting the angle of the collection cover 200 relative to the base shell 100 and the position of the working part 300 in the guide groove 202, the locking device is used to lock the position and angle of the collection cover 200 relative to the base shell 100, and the working nut 306 is used to lock the position of the working part 300 relative to the guide groove 202. This fixes the insertion angle of the bronchoscope. At this time, the working hole 301 guides and limits the entry of the bronchoscope, preventing excessive radial movement of the bronchoscope in the nasal cavity or oral cavity, thus protecting the patient's nasal cavity or oral cavity.

[0050] See Figure 1 , Figure 3In one embodiment of this application, the working part 300 is further provided with a locking hole communicating with the working hole 301 along the radial direction of the working hole 301. The locking hole has an internal thread, and a locking bolt 307 is threadedly connected to the locking hole. See also Figure 1 The locking bolt 307 is threadedly connected to the mating section 305 of the working pipe 302.

[0051] After the locking bolt 307 is screwed into the locking hole, it presses against the outer wall of the bronchoscope, using friction to prevent the bronchoscope from sliding relative to the working hole 301. The operator can use or release the locking bolt 307 to lock the bronchoscope as needed. Furthermore, the end face of the locking bolt 307 that abuts against the bronchoscope can be an arc shape that matches the side wall of the bronchoscope to increase the contact area with the bronchoscope and ensure the restriction effect on the movement of the bronchoscope.

[0052] Furthermore, the end of the locking bolt 307 near the working hole 301 is also provided with an elastic pad made of elastic materials such as rubber and silicone. The locking bolt 307 abuts against the bronchoscope through the elastic pad to prevent the locking bolt 307 from damaging the bronchoscope.

[0053] See Figure 7 In one embodiment of this application, the negative pressure collection unit includes a sponge 208 covering the inner surface of the collection cover 200 and a negative pressure tube 205 disposed within the sponge 208. The negative pressure tube 205 is provided with a plurality of negative pressure holes 206, and the plurality of negative pressure holes 206 form a negative pressure area adapted to the sponge 208.

[0054] As a porous absorbent material, sponge 208 can quickly absorb splashed liquid and prevent it from flowing and accumulating along the inner wall of the cover. Multiple negative pressure holes 206 distributed on the negative pressure tube 205 ensure that the entire area of ​​sponge 208 is uniformly subjected to negative pressure, improving the efficiency of liquid extraction. The dual effect of negative pressure adsorption and physical adsorption of sponge 208 can effectively intercept fine droplets and bloody secretions, preventing droplets from polluting the surrounding environment and preventing droplets and secretions from condensing into droplets and dripping onto the patient's face.

[0055] See Figure 1 The collection hood 200 in this application is a spherical shell larger than a hemisphere but smaller than three-quarters of a sphere. This design allows the negative pressure collection unit to uniformly adsorb droplets and other secretions within the collection hood 200, ensuring effective adsorption. The guide channel 202 is also adaptively designed. It is a through hole along the generatrix of the side wall of the collection hood 200, and the limiting section 303 is arc-shaped, allowing it to abut against the inner wall of the collection hood 200 and move along the extension direction of the guide channel 202, thus facilitating adjustment of the lens angle.

[0056] See Figure 1In one embodiment of this application, a negative pressure tank 207 is provided on the outside of the collection cover 200, and a negative pressure pipe 205 is connected to the upper end of the negative pressure tank 207.

[0057] Droplets are guided through a negative pressure tube 205 into a negative pressure tank 207 located outside the collection hood 200, achieving centralized and sealed storage of contaminants. This prevents contaminants from re-contaminating the patient's face when excessive liquid is splashed, thus ensuring hygiene. Since the negative pressure tube 205 is connected to the upper end of the negative pressure tank 207, droplets and other secretions entering the negative pressure tank 207 are retained at the bottom of the tank under gravity, preventing secretions from re-entering the collection hood 200 through the negative pressure tube 205.

[0058] See Figure 8 In one embodiment of this application, the bronchoscope negative pressure shield further includes a controller 401, a sound monitoring unit 403, and a negative pressure pump 402 connected to the upper end of the negative pressure tank 207. The controller 401, sound monitoring unit 403, and negative pressure pump 402 can be connected to a power source to operate normally. The negative pressure pump 402 is connected to the upper end of the negative pressure tank 207, preventing contaminants from entering the negative pressure pump 402 through the upper end of the negative pressure tank 207 under the influence of gravity, thus protecting the negative pressure pump 402 from contamination. The sound monitoring unit 403 can be a digital microphone or an analog microphone, and the controller 401 can be a PLC module or a microcontroller. The sound monitoring unit 403 is electrically connected to the controller 401 and can send sound signals to the controller 401. The negative pressure pump 402 is electrically connected to the controller 401, and the controller 401 controls the operation of the negative pressure pump 402 according to the sound signals. The controller 401 incorporates an algorithm for analyzing the characteristic spectrum of cough sounds to determine whether a sound is a cough. The controller 401 can also determine the decibel level of the sound signal. When the decibel level exceeds 65 dB and the sound is identified as a cough, the controller 401 sends a start signal to the negative pressure pump 402, which then operates to continuously pump air from the collection hood 200 for a period of time. If the sound signal exceeds 65 dB but does not match the characteristic spectrum of a cough, or if the sound signal matches the characteristic spectrum of a cough but the decibel level does not exceed 65 dB, the controller 401 does not send a start signal to the negative pressure pump 402, and the negative pressure pump 402 remains inactive. This prevents the negative pressure pump 402 from activating due to people talking or coughing around the patient. This control method avoids the situation where, during bronchoscopy, the negative pressure pump 402 operates, causing airflow to impact the collection hood 200 and resulting in slight vibrations in the bronchoscope connected to the working port 301, thus preventing the image formed by the bronchoscope from shaking. It can also avoid the waste of resources or noise interference caused by the long-term operation of the negative pressure pump 402, and at the same time avoid the situation where there is a constant airflow on the patient's face due to suction, thus improving the patient's comfort.

[0059] The sound monitoring unit 403 can be attached to the inside of the bottom shell 100 or the inside of the collection cover 200. Alternatively, the sound monitoring unit 403 can be a separate structure from the collection cover 200 and the bottom shell 100, and can be placed separately at the patient's mouth, or can be attached to the patient's face, neck, or other locations.

[0060] The negative pressure pump 402 and the controller 401 can be integrated, and the integrated unit can be placed on the ground. Compared with the case where the negative pressure pump 402 and the controller 401 are located on the bottom shell 100 or the collection hood 200, the method of placing the integrated unit on the ground can significantly reduce the pressure of the bottom shell 100 on the patient's face.

[0061] In one embodiment of this application, the bottom shell 100 is provided with a plurality of ventilation holes 103 along its circumference.

[0062] The ventilation holes 103 ensure airflow necessary for the patient's normal breathing. During suction by the negative pressure collection unit, outside air enters the collection hood 200 through the ventilation holes 103, replenishing the air inside. Because the air pressure inside the collection hood 200 is lower than the outside air pressure, it effectively prevents contaminants from entering the outside through the ventilation holes 103. Furthermore, it allows for timely pressure relief when the patient coughs, preventing excessively high air pressure within the assembly formed by the collection hood 200 and the base shell 100, which could hinder the patient's cough.

[0063] It should be understood that although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0064] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of this application and are not intended to limit the scope of protection of this application. All equivalent implementations or modifications made without departing from the spirit of the art of this application, such as combinations, divisions or repetitions of features, should be included within the scope of protection of this application.

Claims

1. A negative pressure protective cover for a bronchoscope, characterized in that, include: The bottom shell has a ball-shaped structure formed on the outer side wall at the upper end, and a contact surface that can be contacted on the lower end face of the bottom shell. The upper end face and the lower end face of the bottom shell are connected. A collection hood is provided with a negative pressure collection unit on its inner surface. The inner surface of the inlet of the collection hood is formed with a ball-and-socket structure that can be ball-and-socket connected to the ball-head structure. Along a generatrix of the side wall of the collection hood, close to the inlet of the collection hood, the collection hood is sequentially formed with a guide groove and an adjustment interval penetrating the wall of the collection hood. The two ends of the adjustment interval extend to the guide groove and the inlet of the collection hood, respectively. The collection hood is elastic to increase the adjustment interval. The ball-and-socket structure can be assembled or disassembled with the ball-head structure, passing over the ball-head structure. A locking member is connected to both sides of the adjustment interval. The locking member can limit the expansion of the adjustment interval, so that the ball joint structure and the ball head structure are kept in a ball joint connection. It can also reduce the adjustment interval and lock the rotation of the ball joint structure relative to the ball head structure by using the friction between the ball joint structure and the ball head structure. The working part is slidably connected to the guide groove and can move along the guide groove. The working part is provided with a working hole for the gas endoscope to pass through. The working component includes a working tube with the working hole and a working nut threadedly connected to the working tube. The working tube includes a limiting section located inside the collection hood and a connecting section passing through the guide groove to the outside along its axial direction. The working nut is threadedly connected to the connecting section and can clamp the cover of the collection hood with the limiting section, thereby locking the position of the working component relative to the guide groove by friction.

2. The bronchoscope negative pressure protective cover according to claim 1, characterized in that, The negative pressure collection unit includes a sponge covering the inner surface of the collection cover and a negative pressure tube disposed inside the sponge. The negative pressure tube is provided with multiple negative pressure holes, and the multiple negative pressure holes form a negative pressure area adapted to the sponge.

3. A negative pressure protective cover for a bronchoscope according to claim 2, characterized in that, A negative pressure tank is provided on the outside of the collection hood, and the negative pressure pipe is connected to the upper end of the negative pressure tank.

4. A negative pressure protective cover for a bronchoscope according to claim 3, characterized in that, The bronchoscope negative pressure protective cover also includes a controller, a sound monitoring unit, and a negative pressure pump connected to the upper end of the negative pressure tank; The sound monitoring unit is electrically connected to the controller and is capable of sending sound signals to the controller; The negative pressure pump is electrically connected to the controller, and the controller controls the operation of the negative pressure pump according to the sound signal.

5. A negative pressure protective cover for a bronchoscope according to claim 1, characterized in that, The bottom shell has multiple ventilation holes along its circumference.

6. A negative pressure protective cover for a bronchoscope according to claim 1, characterized in that, The working piece is further provided with a locking hole communicating with the working hole along the radial direction of the working hole, and a locking bolt is threadedly connected to the locking hole.

7. A negative pressure protective cover for a bronchoscope according to claim 6, characterized in that, An elastic pad is also provided at the end of the locking bolt near the working hole.

8. A negative pressure protective cover for a bronchoscope according to claim 1, characterized in that, The surface of the ball-and-socket structure and / or the surface of the ball-head structure are provided with a friction layer.

9. A negative pressure protective cover for a bronchoscope according to claim 1, characterized in that, The locking element is an adjusting bolt, which is perpendicular to the extension direction of the adjusting interval and connected to both sides of the adjusting interval so that the gap of the adjusting interval can be reduced when the adjusting bolt rotates around its own axis.

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