Insertion tube and sputum suction mirror

Abstract

The present invention discloses an insertion tube and a sputum suction mirror, which relate to the field of medical devices. A suction channel and a flow channel are provided in the insertion tube. The suction channel and the flow channel are both distributed along the axial direction of the insertion tube. The suction channel and the flow channel are interconnected on the distal side of the insertion tube. The proximal side of the insertion tube is provided with a first connecting hole connected to the suction channel and a second connecting hole connected to the flow channel. The insertion tube can be connected to a negative pressure source to form a negative pressure in the suction channel. By providing the second connecting hole, medical staff can accurately adjust the pressure distribution in the suction channel, improve the efficiency of sputum removal, and reduce the patient's discomfort. As air enters the flow channel through the second connecting hole, the local pressure at the distal end of the suction channel rises relatively, reducing the pressure difference before and after the sputum plug. When the sputum plug is loosened or sucked out, the pressure inside the suction channel transitions smoothly, avoiding the generation of a sudden negative pressure gradient in the cavity due to the instantaneous release of negative pressure.

Description

Technical Field

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

[0002] A sputum suction mirror is a widely used medical device in clinical practice, primarily used to clear sputum from a patient's airway. Typically, a slender tubular structure connected to a suction device draws sputum from the airway, helping to maintain airway patency. It is commonly used in the treatment of patients with acute respiratory infections, chronic obstructive pulmonary disease, and postoperative patients.

[0003] During the use of a suction mirror, especially when the sputum is thick, sputum may form a plug inside the mirror. This can reduce the suction power of the mirror or even completely block it, preventing the successful removal of sputum. This can make the procedure difficult to complete and increase patient discomfort. Summary of the Invention

[0004] In view of the shortcomings of the above-mentioned related technologies, the present application provides an insertion tube and a suction mirror to solve the above-mentioned technical problems.

[0005] In the first aspect, the present application provides an insertion tube for a sputum suction mirror, wherein a suction channel and a flow channel are provided in the insertion tube, and the suction channel and the flow channel are both distributed along the axial direction of the insertion tube, and the suction channel and the flow channel are connected to each other on the distal side of the insertion tube, and a first connecting hole connected to the suction channel and a second connecting hole connected to the flow channel are provided on the proximal side of the insertion tube.

[0006] In a second aspect, the present application provides a sputum suction mirror, which includes an insertion tube and a handle as described above, wherein the handle is connected to the insertion tube.

[0007] The technical solution employed in the present invention can achieve the following beneficial effects: medical personnel can actuate the insertion tube to insert it into a human body cavity. Once connected to a negative pressure source, the insertion tube can create a stable negative pressure within the suction channel, effectively draining secretions such as sputum. By providing a second connecting hole, the present invention enables medical personnel to precisely adjust the pressure distribution within the suction channel, thereby improving sputum removal efficiency and reducing patient discomfort. For example, medical personnel can open the second connecting hole when a sputum plug is formed or about to fall off, allowing outside air to enter the distal end of the suction channel, thereby shifting the internal pressure of the suction channel from a negative pressure state to a more stable, controlled state. Due to the inflow of air, the local pressure at the distal end of the suction channel increases, reducing the pressure difference between the front and rear ends of the sputum plug. When the sputum plug loosens or is aspirated, the internal pressure of the suction channel transitions smoothly, avoiding the sudden negative pressure gradient within the cavity caused by the instantaneous release of negative pressure. This reduces the impact on the patient's tissues and improves the safety and comfort of the suction procedure.

[0008] Furthermore, the second connecting hole can be used to actively regulate pressure. When the second connecting hole is closed, the negative pressure in the suction channel continues to increase; when it is opened, outside air flows in, reducing the pressure. By repeatedly pressing the second connecting hole, medical staff can create rapidly changing pressure fluctuations within the suction channel, generating pressure shocks that help loosen and clear sputum plugs and improve suction efficiency.

[0009] At the same time, the second connecting hole can also be used to inject a medium (such as a diluent, etc.), and the medium is transported along the flow channel to the distal end of the insertion tube, which can not only further balance the internal pressure and avoid the impact of continuous negative pressure on the patient's cavity, but also dilute and soften the sputum plug, making it easier to be sucked out, thereby optimizing the sputum clearance effect and improving the overall suction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 is a schematic structural diagram of an insertion tube shown in an exemplary embodiment of the present application;

[0012] Figure 2 is a schematic cross-sectional view of an insertion tube according to an exemplary embodiment of the present application;

[0013] Figure 3 yes Figure 2 The enlarged view of point a in the figure;

[0014] Figure 4 is a cross-sectional schematic diagram of another insertion tube shown in an exemplary embodiment of the present application;

[0015] Figure 5 yes Figure 4 The enlarged view of point b in the figure;

[0016] Figure 6 is a schematic structural diagram of a capsule according to an exemplary embodiment of the present application;

[0017] Figure 7 1 is a structural diagram of a sputum suction mirror shown in an exemplary embodiment of the present application;

[0018] Figure 8 is a cross-sectional schematic diagram of a sputum suction mirror shown in an exemplary embodiment of the present application;

[0019] Figure 9 yes Figure 8The enlarged view of point c in the figure;

[0020] Figure 10 Schematic diagram of the structure of a protrusion shown in an exemplary embodiment of the present application.

[0021] In the figure: 1. Suction mirror; 100. Insertion tube; 110. Suction channel; 111. First connecting hole; 112. Outward edge; 113. First end; 114. Second end; 120. Flow channel; 121. Second connecting hole; 122. Conducting hole; 130. Elastic pressing part; 131. Capsule; 1311. First part; 1312. Second part; 132. Puncture structure; 133. Protrusion; 134. Conducting channel; 140. Functional device; 200. Handle; 210. Lead-out position; 220. Installation position; 230. Electrical connection part. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0023] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0024] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein 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".

[0025] During suctioning, sputum may accumulate in the suction channel, forming a sputum plug, causing a continuous increase in local negative pressure and even triggering an abnormal negative pressure state in the patient's cavity. If the sputum plug is suddenly aspirated under high negative pressure, the pressure at the distal end of the insertion tube may drop instantaneously, forming a dramatic negative pressure fluctuation and causing a sudden change in cavity pressure. This sudden pressure change may impact cavity tissue, causing discomfort, and even local mucosal damage or tissue contraction.

[0026] This application provides an insertion tube 100, see Figure 1 and Figure 2 The insertion tube 100 is used for the sputum suction mirror 1. The sputum suction mirror 1 can be inserted into the human body and perform a suction operation to aspirate sputum from the patient's airway, thereby helping to maintain airway patency. The insertion tube 100 can be inserted into the patient's airway, such as the bronchial duct, etc., but this embodiment is not limited thereto.

[0027] In addition, Figure 3 As shown, the distal end of the insertion tube 100 is equipped with functional components 140, such as a camera module and an illumination module, which can capture video information from the distal end of the insertion tube 100 and transmit it to a display device. This allows medical personnel to clearly see the distal end of the insertion tube 100 through the display device, facilitating operation of the insertion tube 100.

[0028] In the embodiments of this application, please refer to Figure 2 Insertion tube 100 is provided with a suction channel 110 and a flow channel 120. Both suction channel 110 and flow channel 120 extend axially along insertion tube 100 and communicate with each other at the distal end of insertion tube 100. The distal end of insertion tube 100 refers to the area near the distal end of insertion tube 100, including but not limited to the distal end surface of insertion tube 100 and the area near the distal end surface of insertion tube 100, and is not limited here.

[0029] In addition, in one case, see Figure 3 The suction channel 110 and the flow channel 120 are directly connected. Specifically, the flow channel 120 extends to an area near the distal end of the insertion tube 100. The distal end of the flow channel 120 has a guide hole 122 that connects to the suction channel 110. Furthermore, the axis of the guide hole 122 is radially aligned with the insertion tube 100. The flow channel 120 is radially connected to the suction channel 110. This prevents the medium in the flow channel 120 from flowing into the suction channel 110, thus resolving the problem of phlegm plugging in the suction channel 110.

[0030] In another embodiment, the distal ends of the suction channel 110 and the flow channel 120 both extend to the distal end surface of the insertion tube 100, and the suction channel 110 and the flow channel 120 are oriented along the axial direction of the insertion tube 100. When the insertion tube 100 is inserted into a human body cavity, the suction channel 110 and the flow channel 120 communicate with the human body cavity. The present embodiment does not limit the communication method between the suction channel 110 and the flow channel 120.

[0031] If the sputum is relatively viscous, it may form a sputum plug inside the suction mirror 1, which may block the insertion tube 100, reducing or even rendering the suction effect of the insertion tube 100 ineffective. In this embodiment, the suction channel 110 can provide negative pressure to the distal end of the insertion tube 100. For example, the proximal end of the suction channel 110 is connected to a negative pressure source, such as a negative pressure pump, to generate a negative pressure atmosphere within the suction channel 110, allowing the insertion tube 100 to aspirate sputum from the patient's airway.

[0032] In order to improve the operation effect of the suction channel 110 and the flow channel 120, in this embodiment, please refer to Figure 4 The proximal side of the insertion tube 100 is provided with a first communicating hole 111 communicating with the suction channel 110 and a second communicating hole 121 communicating with the flow channel 120. The proximal side refers to the area of ​​the insertion tube 100 near its proximal end, such as the proximal surface of the insertion tube 100, the area near the proximal surface of the insertion tube 100, etc. Exemplarily, the proximal wall of the insertion tube 100 is provided with a first communicating hole 111 and a second communicating hole 121. The first communicating hole 111 communicates with the suction channel 110, and the second communicating hole 121 communicates with the flow channel 120. The first communicating hole 111 and the second communicating hole 121 can be provided on the proximal side of the insertion tube 100. The first communicating hole 111 and the second communicating hole 121 can respectively control the suction channel 110 and the flow channel 120 to improve the operating efficiency of the insertion tube 100.

[0033] For more details, please refer to Figure 4 , the medical staff can close the first connecting hole 111, and the negative pressure of the suction channel 110 acts on the distal end of the insertion tube 100 to achieve the suction operation. Through the first connecting hole 111, the suction channel 110 can be connected to the outside world, and the negative pressure does not act entirely on the distal end of the insertion tube 100. Specifically, when the medical staff opens the first connecting hole 111, compared to the distal end of the suction channel 110, the first connecting hole 111 is closer to the proximal end of the suction channel 110, and the negative pressure is provided by the negative pressure device connected to the proximal end of the suction channel 110. Therefore, the negative pressure can act directly on the first connecting hole 111, and the negative pressure will not act on the distal end of the insertion tube 100, thereby improving the operability of operating the insertion tube 100.

[0034] When a sputum plug forms and blocks the suction channel 110, medical personnel open the second connecting hole 121, allowing sterilized air or oxygen to enter the connecting hole, thereby connecting the front end of the insertion tube 100 to the outside world. For ease of understanding, the following description uses air as the basis. By providing the second connecting hole 121, medical personnel can precisely adjust the pressure distribution within the channel, thereby improving the efficiency of clearing sputum and sputum plugs, and reducing patient discomfort. For example, medical personnel can open the second connecting hole 121 when a sputum plug forms or is about to fall off, allowing outside air to enter the distal end of the suction channel 110, thereby shifting the internal pressure of the suction channel 110 from a negative pressure state to a more stable, controlled state. Due to the entry of air, the local pressure at the distal end of the suction channel 110 increases, reducing the pressure difference between the front and rear ends of the sputum plug. When the sputum plug loosens or is aspirated, the internal pressure of the suction channel 110 transitions smoothly, avoiding the sudden negative pressure gradient within the cavity caused by the instantaneous release of negative pressure. This reduces the impact on the patient's tissues and improves the safety and comfort of the suction operation.

[0035] Furthermore, the second connecting hole 121 can also be used to actively regulate pressure. When medical personnel close the second connecting hole 121, the negative pressure within the suction channel 110 continues to increase. When medical personnel open the second connecting hole 121, outside air flows in, reducing the pressure. By repeatedly pressing the second connecting hole 121, medical personnel can create rapidly changing pressure fluctuations within the suction channel 110, generating pressure shocks that help loosen and clear sputum plugs and improve suction efficiency.

[0036] In addition, medical personnel inject a medium (such as a diluent) into the flow channel 120, which then flows along the flow channel 120 to the distal end of the insertion tube 100. The medium balances internal pressure, preventing sustained negative pressure from affecting the body cavity and alleviating patient discomfort. It also dilutes and softens sputum plugs, making them easier to aspirate, thereby optimizing sputum removal and improving overall suction efficiency.

[0037] Please continue reading Figure 4, the insertion tube 100 is provided with an elastic pressing portion 130, and the first connecting hole 111 is located in the elastic pressing portion 130. Exemplarily, the elastic pressing portion 130 has a conducting channel 134 running through opposite ends, and the conducting channel 134 can pass through the elastic pressing portion 130, and the conducting channel 134 and the first connecting hole 111 are connected to the outside world through the conducting channel 134. Therefore, the medical staff can complete the closing operation of the first connecting hole 111 by closing the conducting channel 134. Furthermore, if the medical staff only lightly presses the elastic pressing portion 130 or blocks the conducting channel 134, the first connecting hole 111 can be closed. Since the suction channel 110 is connected to the first connecting hole 111, after the first connecting hole 111 is closed, the suction function of the suction channel 110 is immediately activated, and operations such as suctioning sputum begin.

[0038] The elastic pressing portion 130 is movable relative to the wall of the insertion tube 100. For example, one end of the elastic pressing portion 130 is connected to the wall forming the first connecting hole 111, and the other end extends toward the end away from the insertion tube 100. The elastic pressing portion 130 is elastic. When pressed by a medical professional, the elastic pressing portion 130 deforms and moves radially toward or away from the wall of the insertion tube 100. The second connecting hole 121 is located within the movable path of the elastic pressing portion 130. During the movement of the elastic pressing portion 130 relative to the insertion tube 100, the elastic pressing portion 130 moves toward the wall of the insertion tube 100, thereby closing the second connecting hole 121. When the medical professional operates the elastic pressing portion 130, by applying different forces to press the elastic pressing portion 130, the operation has different control effects, reducing the number of required operating components and improving operational efficiency. For example, lightly pressing or covering the elastic pressing portion 130 completes the closing operation of the first communicating hole 111 and starts the sputum suction operation. Increasing the force of pressing the elastic pressing portion 130 completes the closing operation of the second communicating hole 121.

[0039] In other cases, the elastic pressing portion 130 and the second communicating hole 121 can be distributed along the axial direction of the insertion tube 100, and the elastic pressing portion 130 can slide along the axial direction of the insertion tube 100, with the second communicating hole 121 located in the sliding path of the elastic pressing portion 130. While pressing the elastic pressing portion 130, the medical staff can simultaneously drive the elastic pressing portion 130 so that the elastic pressing portion 130 can cover the second communicating hole 121, that is, complete the closing operation of the second communicating hole 121. This operation will not be described in detail here.

[0040] It is understandable that when the medical staff presses hard and drives the elastic pressing part 130, the movement of the elastic pressing part 130 in the active path can further close the second connecting hole 121. The flow channel 120 is connected to the second connecting hole 121. Once the second connecting hole 121 is closed, the medium flowing to the distal end of the insertion tube 100 through the flow channel 120 will not continue to flow. As the medium cannot flow to the distal end of the insertion tube 100, the pressure at the distal end of the insertion tube 100 will change accordingly, thereby changing the working state of the suction mirror 1 to meet different usage requirements, such as balancing the internal pressure, avoiding the continuous negative pressure affecting the human body cavity, alleviating the patient's discomfort, and diluting the sputum plug in the suction channel 110 to promote the sputum plug to be sucked out. Therefore, when operating, the medical staff does not need to move their fingers. Only one elastic pressing part 130 can complete the operation of the first connecting hole 111 and the second connecting hole 121, thereby improving the portability of the operation.

[0041] In the examples of this application, please refer to Figure 4 The suction channel 110 has a first end 113 and a second end 114 that are separated from each other. The first end 113 extends to the distal end of the insertion tube 100, and the second end 114 is used to communicate with the negative pressure source. The first connecting hole 111 is located between the first end 113 and the second end 114. The first end 113 extends to the distal end of the insertion tube 100 and is directly or indirectly connected to the part where suction is required. The second end 114 is used to communicate with the negative pressure source to provide the suction force required for suction. The first connecting hole 111 is located between the first end 113 and the second end 114, so that the suction channel 110 can be set on the side wall that surrounds the suction channel 110. In actual operation, when the medical staff holds the suction mirror 1, their fingers can naturally and easily touch the first connecting hole 111 located on the side of the suction channel 110. Compared with other difficult-to-reach locations, this setting conforms to ergonomic principles and facilitates the operation of medical staff.

[0042] In the examples of this application, please refer to Figure 5 The elastic pressing portion 130 is provided with a capsule 131 filled with a medium. The capsule 131 is disposed within the elastic pressing portion 130 and is filled with a medium, including, but not limited to, purified water, physiological saline, and the like. Because the medium is pre-filled within the capsule 131 of the elastic pressing portion 130, the tedious steps of preparing and transporting the medium during surgery are avoided, thereby improving surgical efficiency.

[0043] Please continue reading Figure 5The elastic pressing portion 130 or the insertion tube 100 is provided with a puncture structure 132, which includes but is not limited to a puncture needle, a puncture blade, etc. The second connecting hole 121 is located in the movement path of the capsule 131. When the elastic pressing portion 130 moves relative to the insertion tube 100, the capsule 131 can close the second connecting hole 121. At this time, the puncture structure 132 does not contact the capsule 131, and at least a portion of the capsule 131 can cover the second connecting hole 121, so that the second connecting hole 121 is closed. When the medical staff increases the force, the puncture structure 132 punctures the capsule 131, and the medium flows into the flow channel 120 to dilute the sputum, sputum plugs, etc. in the insertion tube 100 or the patient's body, promoting the rapid discharge of sputum and sputum plugs.

[0044] In one embodiment, the puncture structure 132 is provided on the elastic pressing portion 130. Furthermore, the second connecting hole 121 may also be located in the movable path of the puncture structure 132. The puncture structure 132 can puncture the capsule 131 when the capsule 131 closes the second connecting hole 121, so that the medium can enter the second connecting hole 121. Exemplarily, the puncture structure 132 can be built into the capsule 131. Under the pressing operation, the puncture structure 132 gradually approaches the capsule wall on the opposite side and punctures the capsule wall. As the pressing operation progresses, the puncture structure 132 gradually punctures the capsule 131. After the capsule 131 is punctured, the medium filled inside can quickly flow into the second connecting hole 121 to complete the dilution effect. This can prevent the puncture structure 132 from puncturing other structures and improve the protection capability of the insertion tube 100.

[0045] During this time, as the medical staff continues to apply force, the second communication hole 121 is already sealed before the capsule 131 is punctured, eliminating the risk of medium leakage. After the capsule 131 is punctured, the medium can quickly flow into the flow channel 120 to the distal end of the insertion tube 100, thereby diluting the sputum plug and sputum, promoting the rapid expulsion of sputum plugs, and reducing the risk of medium leakage.

[0046] When the elastic pressing portion 130 moves relative to the insertion tube 100, the puncture structure 132 can be inserted into the second connecting hole 121 and close the second connecting hole 121. Furthermore, the puncture structure 132 closes the second connecting hole 121. The puncture structure 132 can be inserted into the second connecting hole 121 and cooperate with the second connecting hole 121 to effectively close the second connecting hole 121. Furthermore, the puncture structure 132 closes the second connecting hole 121 to ensure that the second connecting hole 121 can be normally closed. This can avoid the medium from flowing back and causing waste or leakage. In addition, after the sputum plug is cleared by the medium, the puncture structure 132 closes the second connecting hole 121, which can make the flow channel 120 normally closed to ensure that the pressure in the suction channel 110 tends to be stable and the suction operation is performed, which ensures the stability of the suction force and the reliability of the suction effect. Stable suction pressure not only helps improve the efficiency of suction, but also reduces the irritation and damage to the patient's respiratory tract caused by unstable suction, providing patients with a safer and more comfortable treatment experience.

[0047] Preferably, the capsule 131 can be elastic, and the medium disposed in the capsule 131 has pressure. After the capsule 131 is punctured, it contracts quickly to allow the medium to be quickly discharged, thereby greatly saving operation time.

[0048] In another case, the puncture structure 132 is provided on the tube wall of the insertion tube 100. Furthermore, the puncture structure 132 is provided on at least a portion of the hole wall surrounding the second connecting hole 121. When the elastic pressing portion 130 is driven and covers the second connecting hole 121, the puncture structure 132 is not exposed, and the capsule 131 can cover the second connecting hole 121. The second connecting hole 121 is closed, and as the air cannot flow to the far end of the insertion tube 100, the pressure at the far end of the insertion tube 100 will change accordingly, so as to continuously aspirate sputum plugs, sputum, etc. By increasing the force that drives the elastic pressing portion 130, the hole wall surrounding the second connecting hole 121 is deformed, and the puncture structure 132 is exposed, so that the puncture structure 132 can easily puncture the capsule 131. This enables the puncture structure 132 to puncture accurately and avoid leakage.

[0049] Compared to existing methods that require additional procedures to introduce the medium, this design, which pre-fabricates the medium within the elastic pressing portion 130 and uses the puncture structure 132 to puncture the capsule 131 and discharge the medium, significantly improves surgical efficiency. Medical staff no longer need to deal with the preparation and delivery of the medium during surgery, allowing them to focus more on the surgical procedure. This reduces operative time and mitigates the risks associated with cumbersome procedures.

[0050] In the examples of this application, please refer to Figure 6The capsule 131 may include a first portion 1311 and a second portion 1312. The first portion 1311 is the portion of the capsule 131 opposite the second communication hole 121, and the second portion 1312 is connected to the first portion 1311. The first portion 1311 and the second portion 1312 may be made of different materials or structures. By allowing the two portions of the capsule 131 to have different materials or structures, the suction mirror 1 can better adapt to surgical conditions and improve overall performance and reliability. Within the capsule 131, the volume proportions of the first portion 1311 and the second portion 1312 may be the same or different.

[0051] In one embodiment, see Figure 6 First portion 1311 may be a membrane structure. During surgery, when puncturing capsule 131 to allow the internal medium to flow into second communicating hole 121, the membrane structure, due to its relatively thin and soft texture, is more easily punctured by puncture structure 132. Compared to other thicker or tougher materials, the membrane structure can be quickly penetrated with less puncture force, ensuring that the medium can flow smoothly and promptly into second communicating hole 121. This configuration not only improves the efficiency of the puncture operation, but also reduces wear and tear on puncture structure 132, extending its service life.

[0052] In another embodiment, when the medium flows from the capsule 131 into the second communication hole 121 through puncture, good sealing is very important. Figure 6 The second part 1312 of the present application can be an elastic structure so that the second part 1312 can be sealed with the peripheral wall of the second connecting hole 121. The elastic structure of the second part 1312 has the ability to deform. When the second part 1312 contacts the peripheral wall of the second connecting hole 121, it can rely on its elastic deformation ability to tightly fit the peripheral wall of the second connecting hole 121, fill the gap between the capsule 131 and the peripheral wall of the second connecting hole 121, and thus form a reliable sealing effect. Whether in the process of medium injection or when the puncture structure 132 subsequently closes the second connecting hole 121, it can ensure that the connection between the second connecting hole 121 and the capsule 131 maintains good sealing, ensuring that the medium can accurately flow into the second connecting hole 121 according to the predetermined path.

[0053] In another embodiment, the first part 1311 is a membrane structure, and the second part 1312 is an elastic structure, so that the second part 1312 can be sealed with the peripheral wall of the second connecting hole 121, which can take into account both puncture efficiency and sealing effect, that is, while the second connecting hole 121 and the peripheral wall of the second connecting hole 121 are tightly matched, the puncture structure 132 can accurately puncture the first part 1311 so that the medium can flow into the second connecting hole 121, which is not elaborated here.

[0054] In some other cases, the first connecting hole 111 and the second connecting hole 121 are spaced apart along the axial or circumferential direction of the insertion tube 100. For example, the first connecting hole 111 is located on the side of the second connecting hole 121 close to the distal end of the insertion tube 100. In actual operation, when medical staff activate different functions of the suction mirror 1, the spaced distribution setting can clearly distinguish the operations on the first connecting hole 111 and the second connecting hole 121. For example, when it is necessary to open the suction channel 110 for routine suction, the first connecting hole 111 close to the distal end of the insertion tube 100 is operated. The second connecting hole 121 is spaced apart from the first connecting hole 111, and no erroneous operation will occur due to the distance to the second connecting hole 121 being too close. Medical staff can accurately press, close or perform other operations on the first connecting hole 111 and the second connecting hole 121, avoiding interference between operations due to the close positions of the two connecting holes.

[0055] In the examples of this application, please refer to Figure 5 , the outer wall forming the first connecting hole 111 is provided with an everted edge 112. In other words, the outer wall forming the first connecting hole 111 can extend in the radial outward direction of the first connecting hole 111 to form the everted edge 112. When the medical staff performs the suction operation, they frequently press and close the first connecting hole 111 to control the working state of the suction channel 110. At this time, the outward expansion shape of the everted edge 112 increases the pressing area of ​​the medical staff's fingers and adapts to the medical staff's fingers. A larger contact area means that under the same pressing force, the pressure on the fingers is reduced, making the operation process more comfortable and labor-saving. It can also improve the sealing effect of the fingers and ensure the suction efficiency of the suction channel 110. Medical staff can perform long-term pressing operations more easily, and can also more accurately control the strength and rhythm of the pressing, thereby improving the accuracy and stability of the operation.

[0056] Moreover, the hardness of the outward-turned edge 112 is higher than that of other parts of the elastic pressing portion 130, so that when the outward-turned edge 112 is pressed, it does not undergo obvious deformation, thereby avoiding affecting the cooperation between the outward-turned edge 112 and the finger due to deformation, ensuring that the outward-turned edge 112 can always be sealed with the finger, thereby improving the use effect of the insertion tube 100.

[0057] For ease of understanding, this embodiment provides a specific working principle of the insertion tube 100 as follows:

[0058] To begin suctioning, the medical professional connects the insertion tube 100 to a negative pressure source, generating negative pressure within the suction channel 110. Inserting the insertion tube 100 to a designated position, the medical professional covers the first communication hole 111 with their finger, applying negative pressure to the distal end of the insertion tube 100 to aspirate sputum and other fluids.

[0059] When sputum accumulates in the suction channel 110 and forms a sputum plug, medical personnel can open the second communication hole 121 when the sputum plug is formed or about to fall off, allowing outside air to enter the distal end of the suction channel 110, thereby changing the internal pressure of the suction channel 110 from a negative pressure state to a more stable and controlled state. Due to the entry of air, the local pressure at the distal end of the suction channel 110 increases relatively, reducing the pressure difference before and after the sputum plug.

[0060] When it is necessary to promote the discharge of sputum plugs, medical personnel can apply force to the elastic pressing portion 130 to drive the puncture structure 132 to puncture the capsule 131. The medium in the capsule 131 can be quickly discharged into the suction channel 110, diluting and softening the sputum plug and promoting its discharge. Alternatively, medical personnel can directly inject the medium into the second connecting hole 121, which can dilute the sputum plug and promote its discharge.

[0061] After the sputum plug is expelled, the medical staff can continue to apply force, and the puncture structure 132 can be embedded in the second connecting hole 121, thereby closing the flow channel 120 and continuing to form a stable negative pressure in the suction channel 110 to efficiently expel sputum and other secretions. In addition, if the sputum plug is still formed in the suction channel 110, the medical staff can also drive the elastic pressing part 130 to pull the puncture structure 132 out of the second connecting hole 121, and continue to inject the medium or balance the air pressure through the second connecting hole 121.

[0062] In order to achieve the above-mentioned and other related purposes, the present application provides a sputum suction mirror 1, please refer to Figure 7 The suction mirror 1 includes the aforementioned insertion tube 100 and a handle 200, which is connected to the insertion tube 100. The handle 200 is ergonomically designed to accommodate the user's grip and improve the efficiency of medical personnel. This ensures that the suction mirror 1 has the benefits of any of the aforementioned solutions, which will not be further elaborated here.

[0063] In the examples of this application, please refer to Figure 8The handle 200 is provided with a lead-out position 210 and a mounting position 220, and the lead-out position 210 and the mounting position 220 can be, and the proximal end of the suction channel 110 is mounted on the lead-out position 210. The lead-out position 210 can ensure that the suction channel 110 can be firmly and efficiently connected to the negative pressure device. Through the lead-out position 210, the negative pressure can be smoothly transmitted to the suction channel 110, providing stable and continuous suction for the suction operation. The first connecting hole 111 and the second connecting hole 121 are both located in the mounting position 220, and the mounting position 220 can be located within the finger operation range of the medical staff. During the actual suction operation, the medical staff needs to frequently operate the first connecting hole 111 and the second connecting hole 121 to control the working state of the suction channel 110 and the flow channel 120. The mounting position 220 is within the finger operation range, which means that when the medical staff holds the handle 200, the fingers can and can easily touch the two connecting holes without having to rotate the fingers significantly. This setting adapts to the operating habits of medical staff, improves the efficiency and accuracy of the operation, and provides patients with more timely and effective suction treatment.

[0064] In addition, the handle 200 of the suction mirror 1 can also include an electrical connection part 230, which can be connected to other devices, such as a display device, a power supply, etc., which can power the camera module of the suction mirror 1 or transmit signals, so that medical staff can observe the situation at the distal end of the insertion tube 100, thereby improving the operability of the suction mirror 1.

[0065] In the examples of this application, please refer to Figure 9 The elastic pressing portion 130 of the insertion tube 100 is provided with a protrusion 133, which abuts against the outer wall of the handle 200 and can move relative to the tube wall of the insertion tube 100. Figure 10 As shown, when the elastic pressing portion 130 closes the second connecting hole 121, the protrusion 133 moves into the handle 200. For example, the insertion tube 100 has an elastic pressing portion 130. When the medical staff needs to close the second connecting hole 121 during the suction operation, they will apply pressure to the elastic pressing portion 130. As the pressure increases, the elastic pressing portion 130 begins to deform and gradually moves toward the handle 200. In this process, the protrusion 133 abutting against the outer wall of the handle 200 will also move accordingly. When the elastic pressing portion 130 closes the second connecting hole 121, as shown in FIG. Figure 9The raised portion 133 shown moves into the handle 200. In the process of the raised portion 133 moving from the outside of the handle 200 to the inside of the handle 200, it can bring resistance to the medical staff who are operating it, and after the raised portion 133 moves into the handle 200, the resistance suddenly disappears. This will bring a "sense of passage" to the medical staff's operation, that is, the pressing force and the feel have undergone stage-by-stage changes, which can give the medical staff an operation feedback signal. When the medical staff presses the elastic pressing portion 130, they can clearly feel the movement of the raised portion 133 and clearly know whether the elastic pressing portion 130 has completed the closing action of the second connecting hole 121. This can effectively avoid misjudgment due to visual negligence or a complex operating environment.

[0066] The present invention provides an insertion tube 100 and a sputum suction mirror 1, and medical staff can drive the insertion tube 100 so that the insertion tube 100 can be inserted into the human body cavity. After the insertion tube 100 is connected to the negative pressure source, a stable negative pressure can be formed in the suction channel 110 to efficiently discharge secretions such as sputum. The present invention enables medical staff to accurately adjust the pressure distribution in the suction channel 110 by providing a second connecting hole 121, thereby improving the efficiency of sputum removal and reducing the patient's discomfort. For example, the medical staff can open the second connecting hole 121 when a sputum plug is formed or about to fall off, so that outside air enters the distal end of the suction channel 110, thereby changing the internal pressure of the suction channel 110 from a negative pressure state to a more stable controlled state. Due to the entry of air, the local pressure at the distal end of the suction channel 110 rises relatively, reducing the pressure difference before and after the sputum plug. When the sputum plug is loosened or sucked out, the internal pressure transition of the suction channel 110 is smooth, avoiding the sudden negative pressure gradient in the cavity caused by the instantaneous release of negative pressure, thereby reducing the impact on the patient's tissue and improving the safety and comfort of the suction operation.

[0067] Furthermore, the second connecting hole 121 can also be used to actively regulate pressure. When the second connecting hole 121 is closed, the negative pressure within the suction channel 110 continues to increase; when it is opened, outside air flows in, reducing the pressure. By repeatedly pressing the second connecting hole 121, medical staff can create rapidly changing pressure fluctuations within the suction channel 110, generating pressure shocks that help loosen and clear sputum plugs and improve suction efficiency.

[0068] At the same time, the second connecting hole 121 can also be used to inject a medium (such as a diluent, etc.), and the medium is transported along the flow channel 120 to the distal end of the insertion tube 100, which can not only further balance the internal pressure and avoid the impact of continuous negative pressure on the patient's cavity, but also dilute and soften the sputum plug, making it easier to be sucked out, thereby optimizing the sputum clearance effect and improving the overall suction efficiency.

[0069] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0070] Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in reverse order depending on the functions involved. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Furthermore, features described with reference to certain examples may be combined in other examples.

[0071] The above description is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insertion tube for a sputum suction mirror, characterized in that: A suction channel and a flow channel are provided in the insertion tube, and the suction channel and the flow channel are both distributed along the axial direction of the insertion tube, and the suction channel and the flow channel are connected to each other on the distal end side of the insertion tube. A first communicating hole connected to the suction channel and a second communicating hole connected to the flow channel are provided on the proximal end side of the insertion tube. The insertion tube is provided with an elastic pressing portion, the first communicating hole is located on the elastic pressing portion, and the elastic pressing portion is movable relative to the tube wall of the insertion tube, and the second communicating hole is located in the movable path of the elastic pressing portion. During the movement of the elastic pressing portion relative to the insertion tube, the elastic pressing portion can close the second communicating hole; In which, when a first pressing force is applied to press the elastic pressing part, the closing operation of the first connecting hole is completed, and the insertion tube starts to perform the suction operation. When a second pressing force is applied to press the elastic pressing part, the closing operation of the second connecting hole is completed, and the first pressing force is less than the second pressing force.

2. The insertion tube according to claim 1, wherein The elastic pressing part is provided with a capsule, and the capsule is filled with a medium. The elastic pressing part or the insertion tube is provided with a puncture structure. The second communicating hole is located in the moving path of the capsule. When the elastic pressing part moves relative to the insertion tube, the capsule can close the second communicating hole. The puncture structure can puncture the capsule when the capsule closes the second communicating hole, so that the medium can enter the second communicating hole.

3. The insertion tube according to claim 2, wherein The puncture structure is provided on the elastic pressing portion, and the second communicating hole is located on the movable path of the puncture structure. When the elastic pressing portion moves relative to the insertion tube, the puncture structure can be inserted into the second communicating hole and close the second communicating hole.

4. The insertion tube according to claim 3, wherein The capsule includes a first part and a second part, the first part is a part of the capsule opposite to the second communicating hole, and the second part is connected to the first part. The first part is a membrane structure; and / or the second part is an elastic structure, so that the second part can be sealed and matched with the peripheral wall of the second communicating hole.

5. The insertion tube according to claim 1, wherein The first communicating holes and the second communicating holes are spaced apart along the axial direction or the circumferential direction of the insertion tube.

6. The insertion tube according to any one of claims 1 to 5, characterized in that The outer wall forming the first communicating hole is provided with an outward turning edge; And / or, the suction channel has a first end and a second end that are far away from each other, the first end extends to the distal end surface of the insertion tube, the second end is used to communicate with a negative pressure source, and the first communicating hole is located between the first end and the second end.

7. A sputum suction mirror, characterized in that: The invention comprises the insertion tube according to any one of claims 1 to 6 and a handle, wherein the handle is connected to the insertion tube.

8. The sputum suction mirror according to claim 7, characterized in that: The handle is provided with a lead-out position and a mounting position, the proximal end of the suction channel is mounted at the lead-out position, and the first communicating hole and the second communicating hole are both located in the mounting position.

9. The sputum suction mirror according to claim 8, characterized in that: The elastic pressing portion of the insertion tube is provided with a protrusion, which abuts against the outer wall of the handle and is movable relative to the tube wall of the insertion tube. When the elastic pressing portion closes the second communicating hole, the protrusion moves into the handle.

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