Suction assembly, sputum suction tube and sputum suction mirror

Abstract

The invention provides a suction assembly, a sputum suction tube and a sputum aspirator, and relates to the technical field of endoscopes, the suction assembly comprises a suction tube, the near end of the suction tube is used for being connected with a negative pressure source, and the far end of the suction tube is used for sucking a target substance; the pressure regulating pipe is provided with a first end and a second end, the first end is communicated with a pipe body of the suction pipe and forms a communication port, the second end is an atmosphere port communicated with the outside, and the first end is closer to the near end of the suction pipe relative to the second end; the guiding part is arranged at the communicating opening and used for shielding the communicating opening to prevent sputum from entering the pressure regulating pipe, the guiding part comprises a fixed end and a free end, the fixed end is located on the side close to the far end of the suction pipe, the free end is located on the side close to the near end of the suction pipe, and a circulation gap is formed between the free end and the inner wall of the suction pipe; compared with the prior art, the sputum aspirator has the advantage that the sputum aspirator can effectively prevent sputum and other medical waste liquid from flowing out of the large air hole, and therefore the risk of cross contamination is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and in particular to a suction component, a sputum suction tube and a sputum suction mirror. Background Art

[0002] A suction mirror is a medical device used to remove secretions (such as sputum) from the patient's respiratory tract. It is widely used in clinical scenarios such as surgery, emergency treatment, and intensive care. Its structure usually includes an insertion tube and a suction channel. When in use, the insertion end enters the airway through the mouth or nose, close to the part to be suctioned, and the other end is connected to a negative pressure source to drive the sputum out of the body through negative pressure. In order to adjust the suction intensity, existing suction mirrors or suction tubes often have large air holes on the tube body to regulate the negative pressure state. During the operation, the operator needs to block or release the large air holes with his fingers to control the establishment or release of negative pressure: when blocked, negative pressure is formed and sputum can be sucked out; after releasing the fingers, air enters the tube cavity, and the suction effect is weakened or interrupted.

[0003] However, long-term practice has shown that operators need to directly cover large air holes with their fingers, which may cause sputum splashing back and contaminating the glove surface during the suction process, increasing the risk of cross-infection. Summary of the invention

[0004] The purpose of this application is to provide a suction assembly, a sputum suction tube and a sputum suction mirror to solve the above-mentioned technical problems existing in the prior art.

[0005] In the first aspect, the present application provides a suction assembly, which is applied to a sputum suction mirror and adopts the following technical solution: A suction assembly, applied to a sputum suction mirror, comprising: A suction tube, the proximal end of which is used to connect to a negative pressure source, and the distal end of which is used to suction the target substance; A pressure regulating tube having a first end and a second end, wherein the first end is connected to the tube body of the suction tube and forms a communication port, and the second end is an atmospheric port connected to the outside, and the first end is closer to the proximal end of the suction tube than the second end; The guide portion is arranged at the connecting port and is used to cover the connecting port to prevent sputum from entering the pressure regulating tube. The guide portion includes a fixed end and a free end, wherein the fixed end is located on a side close to the distal end of the suction tube, the free end is located on a side close to the proximal end of the suction tube, and a flow gap is formed between the free end and the inner wall of the suction tube to allow air to flow between the suction tube and the pressure regulating tube.

[0006] In a second aspect, the present application provides a sputum suction tube, which adopts the following technical solution: A sputum suction tube comprises the suction assembly described in the above scheme.

[0007] In a third aspect, the present application provides a sputum suction mirror, adopting the following technical solution: A sputum suction mirror includes the suction assembly described in the above solution, and further includes an insertion tube and a handle housing. The insertion tube is mounted on the handle housing, and the distal end of the suction tube is communicated with the insertion tube.

[0008] The present invention has the following advantages and beneficial effects: (1) In the present invention, the first end of the pressure regulating tube is communicated with the body of the suction tube to form a communication port, and this communication port is closer to the proximal end of the suction tube than the air port, so that the pressure regulating tube bifurcates and extends along the direction away from the proximal end of the suction tube, forming a reasonable suction angle. This layout not only enables the pressure regulating tube to guide the airflow in accordance with the negative pressure direction of the suction tube during suction, but also effectively inhibits the sputum from splashing out through the pressure regulating tube due to backflow or pressure fluctuation, improving the overall safety and cleanliness of use.

[0009] At the same time, this structure is conducive to better fitting of the pressure regulating tube with the internal structure of the handle housing during installation, reducing the occupation of internal space, contributing to the structural compactness of the overall device, and further reducing the volume of the handle housing.

[0010] In addition, a guiding portion is provided at the communication port. The guiding portion includes a fixed end and a free end, which are arranged oppositely. The free end extends towards the proximal end of the suction tube and forms a flow gap for airflow adjustment with the inner wall of the suction tube. The guiding portion can guide the airflow to achieve the ventilation adjustment function in terms of structure, and at the same time effectively shields the communication port, preventing sputum from entering the interior of the pressure regulating tube when backflow or impact occurs, thereby reducing the risk of contamination of the pressure regulating tube, effectively protecting the operator's gloves from being splashed, and reducing the possibility of cross-infection.

[0011] In summary, this structural design not only has good fluid regulation ability and anti-pollution effect, but also has a simple structure, does not require additional complex components, is convenient for processing and assembly, and helps to control production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0013] Figure 1 is a schematic diagram of the overall structure of the suction assembly provided by some embodiments of the present application.

[0014] Figure 2 is a cross-sectional view of the suction assembly provided by some embodiments of the present application.

[0015] Figure 3 is Figure 2 An enlarged view of part A in

[0016] Figure 4 A partial schematic diagram designed to show the deformation of the extension section pushed by sputum.

[0017] Figure 5 A schematic diagram designed to show the structure of the driving member.

[0018] Figure 6 is Figure 5 An enlarged view of part B in

[0019] Figure 7 A schematic diagram designed to show that the deformation part is an inflatable airbag and the inflatable airbag is in an initial state.

[0020] Figure 8 A schematic diagram designed to show that a part of the driving airbag is deflated and the inflatable airbag is in a deformed state.

[0021] Figure 9 A schematic diagram designed to show that the deformation part is a deformation ring and the deformation ring is in an initial state.

[0022] Figure 10 is Figure 9 An enlarged view of part C in

[0023] Figure 11 A schematic diagram designed to show the deformation part in a deformed state.

[0024] Figure 12 A schematic diagram of the overall structure of the sputum aspirating scope provided by some embodiments of the present application.

[0025] Figure 13 is Figure 12 An enlarged view of part D in

[0026] In the figure, the markings are: 100, suction tube; 101, accommodation groove; 200, pressure regulating tube; 201, first end; 202, second end; 203, communication port; 204, atmosphere port; 210, straight section; 220, first tube body; 230, second tube body; 300, guiding part; 301, fixed end; 302, free end; 3021, flow gap; 400, extension section; 500, driving member; 501, driving airbag; 5010, airbag chamber; 5011, communication tube; 502, air outlet; 503, baffle; 600, deformation part; 610, deformation ring; 611, elastic ring; 612, guiding ring; 620, inflatable airbag; 700, insertion tube; 701, camera module; 800, handle housing; T, sputum; Q, negative pressure flow direction. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present invention.

[0028] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same category, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means an "or" relationship between the associated objects before and after.

[0029] In the embodiments of the present application, "proximal end" and "distal end" refer to the relative positions of each component to the user in the usage environment. Among them, the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0030] The following combines Figures 1 to 13 A suction assembly, a sputum suction tube and a sputum suction mirror provided by the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0031] A suction assembly is applied to a sputum suction mirror and includes the following structures: The proximal end of the suction tube 100 is used to connect to a negative pressure source. The negative pressure source can be a commonly used central suction system in hospitals, a portable suction pump or other devices with negative pressure energy supply. The distal end is used to penetrate into the patient's airway to suck the target substance. In this embodiment, the suction tube 100 is used to suck sputum T.

[0032] In different embodiments, the suction tube 100 can be used as a tube for sucking secretions such as effusion and blood. When the suction operation is started, the negative pressure source generates a negative pressure airflow. The target substance enters the suction cavity through the distal end of the suction tube 100, and then is transported along the suction tube 100 to a liquid storage bottle or other collection containers arranged at the rear end of the pipeline, thereby completing the cleaning operation. By reasonably arranging the diameter and structural form of the suction tube 100, the stability of the suction efficiency can be ensured, and deep positioning can be completed in cooperation with the insertion operation of the sputum suction mirror.

[0033] Refer toFigure 2 and Figure 3 As shown in Figure 3 , the pressure regulating tube 200 has a first end 201 and a second end 202. The first end 201 communicates with the body of the suction tube 100 and forms a communication port 203. The communication port 203 is arranged at a position close to the proximal end of the suction tube 100, so as to facilitate the layout inside the handle and be far away from the patient's airway, enhancing the controllability and safety of the structure. The second end 202 is an air port 204 communicating with the outside world, and its ventilation state can be freely opened or controlled by blocking with fingers. Since the first end 201 is closer to the proximal end of the suction tube 100 than the second end 202, the pressure regulating tube 200 extends in a direction away from the proximal end of the suction tube 100 as a whole, forming a reasonable diversion angle. This angle structure enables the pressure regulating air flow to conform to the negative pressure direction to form a guiding streamline, effectively reducing the risk of sputum T flowing back into the pressure regulating tube 200 through the communication port 203.

[0034] Referring to Figure 3 As shown in Figure 3 , the guiding part 300 is shieldedly installed at the communication port 203 and is in the form of a sheet. Its material can be selected from medical-grade elastomers or anti-backflow membrane materials, with both flexibility and structural strength, and can maintain its original position stably under pressure changes. The guiding part 300 includes a fixed end 301 and a free end 302. The fixed end 301 is located on the side close to the distal end of the suction tube 100, that is, arranged towards the insertion end direction, and is used for stable installation at the connection of the suction tube 100 or the pressure regulating tube 200. The free end 302 is located on the side close to the proximal end of the suction tube 100 and is suspended against the inner wall of the suction tube 100, forming a controllable flow gap 3021 therebetween. When the operator releases the air port 204, external air can enter the suction tube 100 through this gap, thereby reducing the negative pressure inside the tube and realizing the rapid adjustment of the suction intensity; when the air port 204 is closed, the guiding part 300 can effectively block sputum T from impacting into the pressure regulating tube 200, improving the hygiene and safety. Compared with the traditional uncovered structure, this guiding design not only realizes the ventilation function, but also enhances the isolation and protection of sputum T, effectively reducing the risks of splashing and cross-infection.

[0035] Furthermore, in different embodiments, the guiding part 300 can be selectively installed inside the pressure regulating tube 200 to directly block the opening surface of the communication port 203; or installed on the inner wall of the suction tube 100 to cover the area above the communication port 203 through a certain angle layout, forming a "reverse buckling" isolation structure. As long as this structure can provide effective shielding in the direction of sputum T backflow and allow the pressure regulating air flow to pass smoothly, the dual functional requirements proposed by the present invention can be achieved.

[0036] As an alternative embodiment, referring to Figure 2As shown, the pressure regulating tube 200 preferably includes a straight section 210, which is the intermediate flow guiding structure of the pressure regulating tube 200. It is usually arranged with an equal diameter or a gradually changing diameter structure to ensure smooth air flow. A bent connecting tube section is provided at one end of the straight section 210 close to the connection with the suction tube 100. The bent section is arranged in an arc shape and smoothly transitions with the inner wall of the suction tube 100 to reduce the formation of local turbulence and liquid accumulation. The other end of the straight section 210 is connected to the air port 204, and the connection method is also an arc-shaped bend, which is convenient for installation inside the handle or in the housing channel. The extending direction of the straight section 210 is consistent with the extending direction of the suction tube 100 from the proximal end to the distal end, so that the air flow direction is the same, avoiding local vortex or reverse flow phenomena.

[0037] During the suction process, since the inside of the suction tube 100 is in a stable negative pressure state, the co-directional arrangement of the pressure regulating tube 200 can form a smooth suction effect during the negative pressure regulation process, preventing the sputum T from entering the pressure regulating channel due to the local air flow back suction. Even if there is a small amount of sputum T residue in the pressure regulating tube 200 under extreme working conditions, it can be timely extracted due to the co-directional extension of the structure and will not accumulate in the tube to cause a pollution source. This structure not only improves the system's hygiene protection ability but also reduces the frequency of the operator's cleaning and component replacement, facilitating clinical operation.

[0038] As an alternative embodiment, referring to Figure 3 and Figure 4 As shown, the cooperation structure between the suction tube 100 and the guiding part 300 is further optimized. A receiving groove 101 is provided at the communication port 203 of the suction tube 100 for embedding the guiding part 300 to enable its stable installation and functional integration. Specifically, a part of the receiving groove 101 is opened on the side of the communication port 203 close to the distal end of the suction tube 100, and the fixed end 301 of the guiding part 300 is embedded and installed at this position. A flow gap 3021 is formed between the other part of the guiding part 300 and the receiving groove 101, so that the fixed end 301 of the guiding part 300 can be more firmly and stably installed in the receiving groove 101. This embedding method effectively prevents the guiding part 300 from generating displacement or flipping during the suction process, improving the overall stability and durability of the device.

[0039] Meanwhile, when the guiding part 300 is located in the receiving groove 101, the side wall on the side close to the center of the suction pipe 100 is flush with the inner wall of the suction pipe 100, forming a smooth transition structure, which is conducive to the smooth flow of sputum T in the lumen of the pipe, and avoids adhesion, vortex or retention phenomena here. A certain free space is reserved between the free end 302 and the bottom wall of the receiving groove 101 to form the "flow gap 3021" for realizing the ventilation function in the open state of the air port 204. Through this flow gap 3021, external air can enter the suction pipe 100 through the gap between the pressure regulating pipe 200, the communication port 203 and the guiding part 300, so as to realize negative pressure regulation and further ensure the sensitivity of the pressure regulating response.

[0040] In terms of material selection, according to the requirements of the specific application environment, the guiding part 300 can be made of different materials. For example, if it is integrally injection-molded with rigid materials (such as polypropylene, ABS, etc.), it can not only simplify the production process, reduce the manufacturing cost, but also improve the structural strength, so that it can maintain a stable shape during the suction process, guide the air flow to flow smoothly, and play a basic blocking role.

[0041] Preferably, the guiding part 300 is made of a flexible material, such as medical-grade silicone, thermoplastic polyurethane (TPU) or other polymer materials with biocompatibility and good elastic deformation ability, and can be prepared by injection molding, embedded mold molding or secondary coating molding. This flexible material can not only ensure good installation with the internal structure of the suction pipe 100, but also quickly respond to deformation under pressure changes, adapt to the impact load brought by the flow of sputum T, thereby enhancing the durability and sealing stability of the entire suction structure.

[0042] On this basis, the free end 302 of the guiding part 300 extends naturally towards the proximal end direction of the suction pipe 100, and an extension section 400 is integrally provided. The extension section 400 is preferably arranged in a curved shape and deflected towards the center side of the suction pipe 100. Its core function is not only to provide a certain diversion guiding function under normal conditions, but more importantly, when the volume of sputum T is large, the viscosity is strong or the flow rate changes suddenly, the extension section 400 can be used as an active elastic interference structure to effectively disturb the flow direction and pressure distribution of sputum T, so that the sputum T flow beam breaks or reduces its inertia, thereby improving the flow state, reducing the probability of blockage, and enhancing the suction smoothness. Among them, the negative pressure flow direction Q is as Figure 4 shown.

[0043] In addition, due to the certain spatial offset of the bending structure of the extension section 400 in the direction towards the communication port 203 of the pressure regulating pipe 200, when the sputum T with a relatively high flow rate touches the extension section 400, the extension section 400 will quickly deform towards the side of the receiving groove 101 under the combined action of elasticity and negative pressure, and fit with the arc-shaped concave structure arranged in the receiving groove 101 to form a temporary spatial closed structure. This structure can realize a "flexible sealing - restoring and rebounding" cyclic reaction mechanism during the suction process, thereby effectively preventing the sputum T from being sucked into the pressure regulating pipe 200 when the local negative pressure surges, further reducing the risk of the sputum T splashing out from the pressure regulating pipe 200 towards the air port 204, and enhancing the overall anti-pollution ability of the system.

[0044] Furthermore, in terms of functional configuration, the extension section 400 also has the ability of two-way adaptive deformation: when the air flow flows from the pressure regulating pipe 200 into the suction pipe 100 (release state), the extension section 400 is in a downstream bending state to ensure smooth air flow; while when the sputum T backflushes or surges, the extension section 400 is reversely stressed and pressed against the receiving groove 101, effectively forming a block. Through this structural adaptive mechanism, the comprehensive performance such as simple structure, sensitive response, reliable sealing, and accurate diversion is improved.

[0045] It should be further noted that although the guiding part 300 and its extension section 400 are preferably made of flexible materials to obtain good deformation ability and diversion adaptability, their softness (flexibility) needs to be precisely controlled and optimized. Specifically, while satisfying the elastic deformation performance, the structure cannot be overly soft, otherwise it is extremely easy to collapse automatically due to the influence of air flow negative pressure during use, resulting in the closing of the flow gap 3021, which will instead weaken the ventilation ability of the pressure regulating pipe 200 when the air port 204 is opened, and damage the negative pressure regulation function, affecting the overall sputum suction efficiency and regulation sensitivity.

[0046] Therefore, in the material selection and structural design stage, high molecular medical materials with a moderate elastic modulus should be selected, so that the guiding part 300 and the extension section 400 can still maintain their basic shapes and the openness of the flow gap 3021 when facing the negative pressure suction in the daily pressure regulation state, thereby ensuring that air can stably flow between the air port 204 and the suction pipe 100, and realizing the real-time regulation of the negative pressure state. At the same time, it also avoids problems such as suction feedback hysteresis or regulation failure caused by the unexpected deformation of its own structure.

[0047] Only in specific situations, such as when encountering the impact of a relatively large volume of sputum T accompanied by an increase in negative pressure, the guiding part 300 and the extension section 400 will undergo purposeful and controlled deformation, and the extension section 400 can fit with the internal arc-shaped structure of the receiving groove 101, thereby realizing a "limited deformation - functional closing" response mechanism.

[0048] In other embodiments, if it is necessary to reduce the manufacturing cost or improve the assembly flexibility, the extension section 400 can also adopt an insert installation structure and be connected to the guiding section 300 by snap connection, press fitting or bonding to form an integrated elastic flow guiding assembly. Further, to optimize the air flow guiding and anti-blocking effects, the extension section 400 can also be designed into different structures such as "fan-shaped", "spiral sheet", "V-shaped spoiler wing", etc. according to clinical needs to improve the T-disturbance efficiency of sputum and the smoothness of discharge.

[0049] Further, to achieve more precise control and functional partition design, the elasticity of the extension section 400 is preferably greater than that of the guiding section 300, that is, when the extension section 400 is subjected to the same external force (such as sputum T impact, air flow negative pressure), its response deformation degree is higher than that of the main body of the guiding section 300. This design with different elasticities has the following several significant advantages: First, enhance the sensitive response ability to sputum T impact. Since the extension section 400 is located at the free end 302 of the guiding section 300, it is directly faced with a higher risk of sputum T or foreign matter inflow impact. By setting the extension section 400 to have higher elasticity, it can deform more quickly to avoid or guide when suffering from impact, which not only plays a dynamic buffering role, but also effectively disturbs the sputum T path, avoids the accumulation or blockage of sputum T at the mouth of the pressure regulating tube 200, and improves the sputum discharge efficiency.

[0050] Second, this structure can also enhance the function switching ability of "automatic guiding - timely closing". When there is no large impact of sputum T, due to the higher elasticity of the extension section 400, it can maintain its preset bending and guiding state, stably control the sputum T and air flow directions, and keep the flow gap 3021 at the communication port 203 unobstructed; once the negative pressure increases or the volume of sputum T suddenly increases, the extension section 400 will first undergo significant deformation and then conform to the inner wall of the accommodation groove 101 or the suction pipe 100, thereby achieving the role of temporarily closing the pressure regulating channel and effectively preventing the sputum T from splashing back or splashing reversely to the atmosphere port 204.

[0051] Third, from the perspective of the overall structural stability, as the connecting base, the guiding section 300 with slightly smaller elasticity helps to maintain the supporting form of the overall structure, reduce the shaking or deformation of the free end 302 in the state without external force, and improve the static reliability and working life of the guiding structure; while the more elastic extension section 400 mainly undertakes the dynamic regulation and response functions and has the regulation characteristics of "changing during movement".

[0052] As a preferred embodiment, referring to Figure 5 and Figure 6As shown, on the basis of the basic structure of the present invention, further improvements are made. A driving member 500 is provided on the pressure regulating pipe 200, which is used to inject a fluid medium into the suction pipe 100, so as to assist in discharging sputum T by forming a certain impact pressure or dilution effect. The setting of the driving member 500 can significantly improve the sputum discharge efficiency of the suction assembly when facing sputum T with high viscosity, easy adhesion or large quantity, and further improve the adaptability and clinical practicability of the overall device. The fluid medium can be selected from air, physiological saline, diluent or other medical liquids that are safe for the human body and have certain dilution and lubrication effects, which can reduce the risk of adhesion to the lumen wall while assisting in removing blockages and reduce the risk of re-blockage.

[0053] As a preferred embodiment, the driving member 500 is a driving bladder 501. The driving bladder 501 is a compressible and automatically recoverable elastic bladder, which is connected and installed on one side of the air port 204 of the pressure regulating pipe 200, so that the operator can perform positive air flow or liquid injection operations through the driving bladder 501 without contacting the body of the suction pipe 100. An air outlet 502 is provided on one side of the driving bladder 501, and the air outlet 502 is located on the side away from the area where the operator's hand holds, preventing possible gas impact or residual sputum T from splashing back to the operator during the injection or release process, and further improving the use safety.

[0054] To enhance the sealing reliability and control accuracy of the device, refer to Figure 6 As shown, a baffle 503 structure is integrally provided inside the air outlet 502. The baffle 503 is made of flexible elastic sheet or silicone gasket material. In the state where the driving bladder 501 is not pressed, the baffle 503 maintains a certain gap with the inner wall of the driving bladder 501, allowing the atmosphere to freely enter and exit the pressure regulating pipe 200 to achieve the normal negative pressure regulation function. When the driving bladder 501 is fully pressed to a certain stroke, the baffle 503 fits and closes the air outlet 502 to form a temporary sealing state, so as to realize the directional injection of the fluid medium, avoid the reverse escape of gas or liquid from the air outlet 502, ensure the unidirectional injection of the fluid into the suction pipe 100, and improve the use efficiency and accuracy.

[0055] In another alternative embodiment, the driving bladder 501 is divided into two functional areas. One part is a cavity container area for pre-storing a certain amount of fluid medium, such as physiological saline; the other part is an air pressure regulating channel area, which continues to carry structures such as the air outlet 502 and the baffle 503 to achieve the air ventilation and pressure regulation function. The operator can selectively release gas or fluid medium by single pressing or staged squeezing to meet the suction requirements in different clinical scenarios. For example, when encountering thick sputum T blockage, first inject a small amount of physiological saline to soften the sputum mass, and then resume the suction state, effectively improving the patency of sputum T and clinical efficiency.

[0056] Furthermore, the driving member 500 can also adopt a structure independently arranged from the pressure regulating pipe 200, be connected to an additional liquid supply container through a flexible hose, and be controlled by a solenoid valve or a mechanical valve. The operation end can be provided with a touch button or a mechanical dial, which is convenient for accurately controlling the liquid injection timing and range. The advantage of this structure is that it can be arranged away from the main body of the suction assembly, reducing the burden on the handle and facilitating miniaturization design. At the same time, it has better integration and expandability in intensive care or automated sputum suction systems.

[0057] In addition, to ensure the sterility and safety of the injected liquid, the inner cavity surfaces of the pressure regulating pipe 200, the liquid channel, or the driving bladder 501 can be made of medical-grade anti-adhesion materials or hydrophilic coating materials, further preventing the attachment, contamination, or backflow of sputum T or blood on the inner wall surface, helping to maintain the cleanliness and hygiene requirements of the internal environment, and reducing the replacement frequency.

[0058] Optionally, as shown in Figures 7 - 11 A deformation part 600 is installed on the pressure regulating pipe 200. The deformation part 600 is used to respond to the negative pressure state in the suction pipe 100 and adjust the opening degree of the internal channel of the pressure regulating pipe 200, further enhancing the protection ability and avoiding the risk of contamination caused by sputum T entering through the pressure regulating pipe 200 or splashing from the air port 204. The deformation part 600 has two states: the initial state and the deformed state. When the air port 204 is in the open state, the deformation part 600 remains in the initial state. Even if there is negative pressure in the suction pipe 100, due to the continuous ventilation of the air port 204, the deformation part 600 is in a balanced state and the structure does not deform, ensuring the smooth flow of gas in the pressure regulating pipe 200 and maintaining the normal operation of the suction intensity adjustment function. When the air port 204 is blocked by the operator's finger, the pressure regulating pipe 200 is isolated from the outside world, and the negative pressure in the suction pipe 100 cannot be released. In this state, the deformation part 600 responds to the pressure difference and begins to deform, turning into the deformed state, thereby at least partially closing the internal channel of the pressure regulating pipe 200 to form a "secondary seal" barrier to block the entry of sputum T due to air flow back suction or vibration into the pressure regulating pipe 200, thus preventing the accidental splashing of sputum T from the air port 204 when the pressure regulating pipe 200 is closed. Of course, the deformation part 600 can also form a "secondary seal" barrier for the internal channel of the pressure regulating pipe 200 under the action of an external force.

[0059] As an alternative embodiment, the deformation part 600 includes a deformation ring 610 structure. The pressure regulating tube 200 is integrally divided into a first tube body 220 and a second tube body 230. The first tube body 220 is communicated with the suction tube 100, and the distal end of the second tube body 230 is an air port 204 communicated with the outside. The deformation ring 610 is arranged between the first tube body 220 and the second tube body 230, which is convenient for realizing function integration and maintenance. Specifically, both ends of the deformation ring 610 have a stepped structure and can be accurately clamped in the stepped positions of the ports of the first tube body 220 and the second tube body 230, and then sealed with a medical-grade adhesive to ensure the overall sealing performance and air flow stability.

[0060] In terms of structural composition, the deformation ring 610 includes an elastic ring 611 arranged on the outside and a guiding ring 612 located inside it. At least one guiding ring 612 is provided, and the outer wall of one side of it close to the first tube body 220 or the second tube body 230 is conical, guiding the elastic ring 611 to deform in an inward manner along the axis direction of the pressure regulating tube 200 when the air pressure changes, that is, contracting towards the center of the lumen. This design is particularly crucial after the air port 204 is blocked by a finger: the negative pressure in the suction tube 100 is significantly enhanced. At this time, the elastic ring 611 will deform towards the center under the constraint of the deformation trajectory of the guiding ring 612, thereby at least partially reducing the inner diameter of this section of the pressure regulating tube 200, effectively forming a blocking structure to further prevent the sputum T from surging upward.

[0061] It is worth noting that to ensure the pressure regulation stability, the material selected for the elastic ring 611 needs to have good resilience and appropriate initial support strength, ensuring that when the air port 204 is not closed, even if there is a certain negative pressure in the suction tube 100, the elastic ring 611 can still maintain its initial state and does not deform in advance, so as to ensure that the gas can smoothly enter the inside of the suction tube 100 from the air port 204 and keep the pressure regulation function running stably.

[0062] In addition, designing the deformation ring 610 as an integral ring structure is not only beneficial for symmetric force application, improving the consistency of structural response, but also convenient for accurate positioning during the manufacturing and assembly process, improving the consistency and assembly efficiency of mass production. The deformation ring 610 can also be equipped with elastic materials of different stiffness levels according to clinical needs to flexibly match the suction requirements in different disease conditions or scenarios of the sputum T viscosity of patients.

[0063] As another alternative embodiment, the deformation part 600 can also be composed of a partial deformation section. This deformation section is arranged in the middle of the pressure regulating tube 200 or near the connection end of the suction tube 100. The deformation material used can be the same as the above-mentioned deformation ring 610, such as shape memory alloy, medical silicone or other elastomeric materials, which have controllable deformation and strong recovery ability. In a negative pressure environment, the deformation section undergoes local concave or contraction, forming a short-term "airflow gate" effect, which has a blocking or guiding effect on the sputum T. This kind of structural design is suitable for occasions with compact structure or high requirements for production cost control, and also has good maintainability.

[0064] Furthermore, whether using the deformation ring 610 or the partial deformation section structure, their design concepts have achieved the purpose of "enhancing the protection ability while maintaining the pressure regulating function". Compared with the traditional simple large pore design that only relies on the operator's finger to block and has no automatic blocking function in structure, the present application actively adjusts the opening state of the channel through the pressure-responsive deformation structure, which not only effectively improves the use safety and anti-spray performance, but also has a simple structure and is easy to manufacture, and is suitable for the popularization and application of various specifications of suction mirrors systems.

[0065] As an alternative embodiment, referring to Figures 7 - 8 As shown, the deformation part 600 includes an expansion airbag 620. The expansion airbag 620 is arranged in the internal space of the pressure regulating tube 200 and is used to respond to the operator's control behavior during the suction process to controllably close the internal airflow channel of the pressure regulating tube 200, so as to further improve the sputum T blocking ability and reduce the risk of splashing or backflow. The expansion airbag 620 realizes the expansion action through the linkage with the driving airbag 501, thereby completing the occupation or closing of the local channel of the pressure regulating tube 200, assisting in negative pressure regulation and improving the system sealing performance.

[0066] Specifically, an integrally formed or additional chamber 5010 is provided on the driving airbag 501. This chamber 5010 can be regarded as a closed liquid storage chamber inside the driving airbag 501, which is used to pre-store a certain amount of fluid medium, such as air, physiological saline or other safe and controllable liquid media. The expansion airbag 620 is connected to the chamber 5010 through a connecting pipe 5011. The internal flow channel of the connecting pipe 5011 is used to quickly introduce the fluid medium in the chamber 5010 into the expansion airbag 620 when the driving airbag 501 is externally pressed, so that it generates an obvious volume change in a short time, thereby realizing the directional expansion and occupation of the internal channel of the pressure regulating tube 200.

[0067] The outer wall of the inflatable balloon 620 can be made of materials with excellent elasticity and high biocompatibility, such as flexible medical silicone and TPU (thermoplastic polyurethane), to ensure that it can fully enclose the target area after being compressed and inflated, and can quickly retract to its initial state after the external force is removed, ensuring the smoothness of the channel. The installation position of the inflatable balloon 620 is preferably near the middle and rear section of the pressure regulating tube 200 or near the communication port 203, so that when a negative pressure or the backflow trend of sputum T occurs in the suction tube 100, it can quickly block the pressure regulating path and prevent the sputum T from splashing through the air port 204 along with the airflow.

[0068] In terms of the specific structural implementation, the chamber 5010 can be flexibly arranged outside or inside the driving bladder 501. When the chamber 5010 is arranged outside the driving bladder 501, it can adopt the form of an independent cavity attached to the surface of the driving bladder 501, which is convenient for disassembly, replacement or maintenance and is suitable for the modular design requirements; when the chamber 5010 is arranged inside the driving bladder 501, it can be integrally constructed in the cavity of the driving bladder 501 by injection molding. This not only makes the structure compact but also has stronger overall sealing performance, which is beneficial to improving the air pressure transmission efficiency.

[0069] In addition, to prevent the inflatable balloon 620 from being accidentally inflated due to air flow disturbance in the non-pressed state, the inflatable balloon 620 can control the inflation response by selecting materials and configurations with an opening threshold slightly higher than the suction pressure, so as to ensure its accurate response to the pressing action during operation and form an effective seal. This structure can not only assist in adjusting the stability of the negative pressure system but also enhance the dual effect of blocking sputum T, which is a significant optimization of the traditional single-finger operation pressure regulating structure.

[0070] This application provides a sputum suction tube, including the suction assembly in the above solution. By using the suction tube 100 and the pressure regulating tube 200 in the suction assembly, the sputum suction operation can be completed after connecting to a negative pressure source. Through the atmospheric regulation path provided by the pressure regulating tube 200 and in combination with components such as the guiding part 300 and the deformable part 600, the sputum suction tube can achieve dynamic control of the suction intensity, direction and airtightness of sputum T, further improving the operation flexibility and biosecurity during use. This structure is particularly suitable for use in clinical operation scenarios with limited space, frequent pressure regulation requirements or infection risk.

[0071] Refer to Figure 12 and Figure 13As shown in the figure, the present application also provides a sputum aspirator mirror, which includes the suction assembly in the above solution, and also includes an insertion tube 700 and a handle housing 800. The insertion tube 700 is installed at the front end of the handle housing 800, and the distal end of the suction tube 100 is communicated with the insertion tube 700 to form a complete negative pressure suction path. The insertion tube 700 is preferably made of relatively flexible materials, such as polyurethane (PU), medical-grade polyamide (PA), or other materials with both flexibility and structural strength. It not only has the ability to adapt to the curved path of the human body cavity, but also has a certain compressive and bending resistance, and can meet the mechanical support requirements during the insertion guidance process. The structural design of the insertion tube 700 is similar to the insertion part of the endoscope. While maintaining insertability, it ensures sufficient safety and operation stability in clinical applications.

[0072] In a preferred embodiment, the insertion tube 700 and the suction tube 100 are designed in a split manner. This design not only facilitates the selection of appropriate materials and processing methods according to functional requirements respectively. More importantly, as a component directly entering the patient's body cavity, the insertion tube 700 often needs to integrate precision electronic units such as a light source assembly and a camera module 701, and reserve structural features such as optical fiber channels, circuit layout areas, and cold light illumination windows on the tube wall. Therefore, it needs to have a high degree of customization in manufacturing and functional layout. The split design facilitates later modular assembly, improving the product adaptation ability and maintenance convenience.

[0073] Of course, in other embodiments, the insertion tube 700 and the suction tube 100 can also be designed as an integral pipe structure according to different clinical use scenarios, so as to reduce the number of connection interfaces, improve the overall fluid tightness and operation coherence. Whether it is split or not is not a limitation in terms of structural function, but a trade-off choice for the integration of multi-functional components and manufacturing flexibility.

[0074] Furthermore, a light source assembly can also be integrated at the distal end of the insertion tube 700. The light source assembly provides high-brightness illumination for the front-end area by setting micro-optical units such as LEDs, so that the carried camera module 701 can obtain clear and stable image information, which is beneficial for doctors to observe the sputum aspiration site in real time and improve the visualization level of the operation.

[0075] Specifically, the sputum aspirator mirror also includes two parts: a negative pressure joint and an electrical joint. The negative pressure joint is arranged at the proximal end of the suction assembly, located in the rear-end area of the handle housing 800, which is convenient for connecting to the hospital negative pressure pump system or a portable negative pressure device to provide stable suction ability for the suction tube 100. The electrical joint is used to complete the electrical connection between the external main control system and the internal image system and light source system. One end of the electrical joint is fixed to the handle housing 800, and the other end is electrically connected to the light source assembly and the camera module 701 at the distal end of the insertion tube 700 through internal wiring, supporting power supply and signal transmission.

[0076] In addition, it should be emphasized that the endoscope in the embodiments of the present application can be a bronchoscope, a pyeloscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiments of the present application do not specifically limit the types of endoscopes.

[0077] It should be noted that in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including such element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0078] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A suction assembly, applied to a sputum aspirating endoscope, characterized in that, Comprising: A suction pipe (100) with its proximal end for connecting to a negative pressure source and its distal end for sucking target substances; A pressure regulating pipe (200) having a first end (201) and a second end (202). The first end (201) communicates with the body of the suction pipe (100) to form a communication port (203), the second end (202) is an air port (204) communicating with the outside, and the first end (201) is closer to the proximal end of the suction pipe (100) than the second end (202); A guiding part (300) arranged at the communication port (203) and used to shield the communication port (203) to prevent sputum from entering the pressure regulating pipe (200). The guiding part (300) includes a fixed end (301) and a free end (302). Among them, the fixed end (301) is located on the side close to the distal end of the suction pipe (100), the free end (302) is located on the side close to the proximal end of the suction pipe (100), and a flow gap (3021) is formed between the free end (302) and the inner wall of the suction pipe (100) for air flow to circulate between the suction pipe (100) and the pressure regulating pipe (200).

2. The suction assembly according to claim 1, wherein, The pressure regulating pipe (200) includes a straight section (210), and the extending direction of the straight section (210) is the same as the extending direction of the suction pipe (100) from the proximal end to the distal end.

3. The aspiration assembly according to claim 1 or 2, characterized in that, The suction pipe (100) is provided with a receiving groove (101) at the communication port (203). The guiding part (300) is arranged in the receiving groove (101). The flow gap (3021) is formed by the free space between the free end (302) of the guiding part (300) and the bottom wall of the receiving groove (101), and the side wall of the guiding part (300) close to the center of the suction pipe (100) is flush with the inner wall of the suction pipe (100).

4. The suction assembly according to claim 3, characterized in that, The guiding part (300) is made of a rigid material or an elastic material. An extension section (400) extends in the direction of the proximal end of the suction pipe (100) at the free end (302) of the guiding part (300). The extension section (400) bends and extends towards the center of the suction pipe (100), and the extension section (400) is also made of an elastic material. Among them, when both the guiding part (300) and the extension section (400) are made of elastic materials, the elasticity of the extension section (400) is greater than that of the guiding part (300).

5. The suction assembly according to claim 1, characterized in that, A driving member (500) is provided on the pressure regulating pipe (200), and the driving member (500) is used to inject a fluid medium into the suction pipe (100) to impact the flow of sputum.

6. The suction assembly according to claim 5, characterized in that, The driving member (500) includes a driving bladder (501). The driving bladder (501) is connected and installed on one side of the air port (204) of the pressure regulating pipe (200). An air outlet (502) is provided on the driving bladder (501), and the air outlet (502) is in a closed state after pressing the driving bladder (501).

7. The aspiration assembly according to claim 6, characterized in that, A deformation part (600) is provided on the pressure regulating pipe (200). The deformation part (600) has an initial state and a deformed state, where: When the air port (204) is open, the deformation part (600) remains in the initial state. Even if there is a negative pressure in the suction pipe (100), the deformation part (600) does not deform; When the air port (204) is in a closed state, the deformation part (600) changes to the deformed state and at least partially closes the internal passage of the pressure regulating pipe (200).

8. The aspiration assembly according to claim 7, wherein, The deformation part (600) includes a deformation ring (610). The pressure regulating pipe (200) includes a first pipe body (220) and a second pipe body (230). The first pipe body (220) is communicated with the suction pipe (100), and the distal end of the second pipe body (230) is the air port (204); The deformation ring (610) is connected between the first pipe body (220) and the second pipe body (230). The deformation ring (610) includes an elastic ring (611) provided on the outside and a guiding ring (612) provided on the inside. At least one guiding ring (612) is provided and is close to one side of the first pipe body (220) or the second pipe body (230). The outer wall thereof is tapered to guide the elastic ring (611) to deform towards the center direction of the pressure regulating pipe (200); Alternatively, the deformation part (600) includes an expansion airbag (620). The expansion airbag (620) is provided in the pressure regulating pipe (200). A chamber (5010) is provided on the driving airbag (501). The expansion airbag (620) is configured such that when the driving airbag (501) is pressed, the fluid medium in the chamber (5010) enters the expansion airbag (620), thereby causing the expansion airbag (620) to expand and at least partially close the internal passage of the pressure regulating pipe (200).

9. A sputum aspirator tube, characterized in that, Including the suction assembly according to any one of claims 1-8.

10. A sputum aspirating mirror, characterized in that, Including the suction assembly according to any one of claims 1-8, further including an insertion tube (700) and a handle housing (800). The insertion tube (700) is installed on the handle housing (800), and the distal end of the suction pipe (100) is communicated with the insertion tube (700).

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