Insertion tube and sputum aspirator

Abstract

The invention discloses an insertion tube and a sputum aspirator, and relates to the field of medical instruments.The insertion tube is internally provided with a suction channel and a flow channel, the suction channel and the flow channel are distributed in the axial direction of the insertion tube, and the suction channel and the flow channel communicate with each other on the far-end side of the insertion tube; a first communicating hole communicating with the suction channel and a second communicating hole communicating with the flow channel are formed in the near end side of the insertion tube. The insertion tube can be connected with a negative pressure source so that negative pressure can be formed in the suction channel. By arranging the second communicating hole, the medical staff can accurately adjust the pressure distribution in the suction channel, the sputum removal efficiency is improved, and the discomfort of a patient is reduced. As air enters the flow channel through the second communication hole, local pressure at the far end of the suction channel is relatively increased, and the pressure difference before and after the sputum embolism is reduced. And when the sputum plug is loosened or sucked out, the internal pressure of the suction channel is transitionally stable, so that the sudden negative pressure gradient generated in the cavity due to the instant release of the negative pressure is avoided.

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] The sputum suction mirror is a medical device widely used in clinical practice, mainly used to remove sputum from the patient's airway. Usually, the sputum suction mirror is connected to the suction device through a slender tubular structure to suck out the sputum from the airway, thereby helping to keep the airway open. It is often used in the treatment of patients with acute respiratory infections, chronic obstructive pulmonary disease, and postoperative patients.

[0003] When using the suction mirror, especially when the sputum is thick, the sputum may form a sputum plug inside the suction mirror. This will cause the suction power of the suction mirror to decrease or even be completely blocked, making it impossible to successfully remove the sputum. This will make the operation difficult to complete and the patient's discomfort will increase dramatically. Summary of the invention

[0004] In view of the shortcomings of the above related technologies, the present application provides an insertion tube and a sputum suction mirror to solve the above 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, wherein 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 at 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 at 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 adopted by the present invention can achieve the following beneficial effects: medical staff can drive the insertion tube so that the insertion tube can be inserted into the human body cavity. After the insertion tube is connected to the negative pressure source, a stable negative pressure can be formed in the suction channel to efficiently discharge secretions such as sputum. The present invention enables medical staff to accurately adjust the pressure distribution in the suction channel by setting a second connecting hole, thereby improving the sputum removal efficiency and reducing the patient's discomfort. Exemplarily, the medical staff can open the second connecting hole when the sputum plug is formed or about to fall off, so that the outside air enters the far end of the suction channel, so that the internal pressure of the suction channel is changed from a negative pressure state to a more stable controlled state. Due to the entry of air, the local pressure at the far 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 internal pressure of the suction channel transitions smoothly, 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.

[0008] In addition, the second connecting hole can also be used to actively adjust the pressure. When the second connecting hole is closed, the negative pressure in the suction channel continues to increase; when it is opened, the outside air flows in to reduce the pressure. Medical staff can repeatedly press the second connecting hole to form a rapidly changing pressure fluctuation inside the suction channel, thereby generating a pressure shock, which helps to loosen and clear the sputum plug and improve the suction efficiency.

[0009] At the same time, the second connecting hole can also be used to inject medium (such as 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 creative work.

[0011] Figure 1 is a schematic structural diagram of an insertion tube shown in an exemplary embodiment of the present application; Figure 2 is a cross-sectional schematic diagram of an insertion tube shown in an exemplary embodiment of the present application; Figure 3 yes Figure 2 The enlarged view of point a in the figure; Figure 4 is a cross-sectional schematic diagram of another insertion tube shown in an exemplary embodiment of the present application; Figure 5 yes Figure 4 The enlarged view of point b in the figure; Figure 6 is a schematic structural diagram of a capsule body shown in an exemplary embodiment of the present application; Figure 7 is a structural schematic diagram of a sputum suction mirror shown in an exemplary embodiment of the present application; Figure 8 is a cross-sectional schematic diagram of a sputum suction mirror shown in an exemplary embodiment of the present application; Fig. 9 yes Figure 8 The enlarged view of point c in the figure; Fig.10 It is a schematic structural diagram of a protrusion shown in an exemplary embodiment of the present application.

[0012] In the figure: 1, suction mirror; 100, insertion tube; 110, suction channel; 111, first connecting hole; 112, eversion 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

[0013] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution 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 the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0014] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0015] 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".

[0016] During the suction process, sputum may gather in the suction channel to form a sputum plug, causing the local negative pressure to continue to increase, and even causing an abnormal negative pressure state in the patient's cavity. If the sputum plug is suddenly sucked out under the action of high negative pressure, it may cause the pressure at the far end of the insertion tube to drop instantly, forming a violent negative pressure fluctuation, causing a sudden change in the pressure in the cavity. This sudden pressure change may have an impact on the cavity tissue, causing discomfort, and even causing local mucosal damage or tissue contraction.

[0017] The present application provides an insertion tube 100, see Figure 1 and Figure 2The 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 suction operation to suck out sputum from the patient's airway, thereby helping to keep the airway unobstructed. The insertion tube 100 can be inserted into the patient's airway, such as a bronchial duct, etc., which is not limited in this embodiment.

[0018] In addition, Figure 3 As shown, the distal end of the insertion tube 100 is provided with a functional device 140, such as a camera module and an illumination module, which can collect video information of the distal end of the insertion tube 100 and transmit it back to the display device. The medical staff can see the situation of the distal end of the insertion tube 100 through the display device, which is convenient for operating the insertion tube 100.

[0019] In the embodiments of this application, please refer to Figure 2 The insertion tube 100 is provided with a suction channel 110 and a flow channel 120, both of which extend along the axial direction of the insertion tube 100, and the suction channel 110 and the flow channel 120 are connected to each other at the distal end of the insertion tube 100. The distal end of the insertion tube 100 refers to the area close to the distal end of the insertion tube 100, including but not limited to the distal end surface of the insertion tube 100, the area near the distal end surface of the insertion tube 100, etc., which is not limited here.

[0020] In addition, in one case, see Figure 3 , the suction channel 110 and the flow channel 120 can be directly connected, that is, the flow channel 120 extends to the area near the distal end surface of the insertion tube 100, and the distal end of the flow channel 120 has a conducting hole 122, and the conducting hole 122 can be connected toward the suction channel 110. Further, the axis of the conducting hole 122 is the radial direction of the insertion tube 100. The flow channel 120 is conducted in the radial direction and connected to the suction channel 110. This can prevent the medium of the flow channel 120 from flowing into the suction channel 110, and solve the problem of sputum plug in the suction channel 110.

[0021] In another case, 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 are connected to the human body cavity. Here, this embodiment does not limit the communication method between the suction channel 110 and the flow channel 120.

[0022] In the case where the sputum is relatively viscous, the sputum may form a sputum plug inside the sputum suction mirror 1, and the sputum plug may block the insertion tube 100, resulting in a reduction in or failure of the suction effect of the insertion tube 100. 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, etc., and a negative pressure atmosphere is generated in the suction channel 110, and the sputum can be sucked out of the patient's airway by the insertion tube 100.

[0023] 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 close to its own 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 side 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 is connected to the suction channel 110, and the second communicating hole 121 is connected to 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 control the suction channel 110 and the flow channel 120 respectively to improve the operation efficiency of the insertion tube 100.

[0024] 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 completely act on the distal end of the insertion tube 100. Specifically, when the medical staff opens the first connecting hole 111, compared with 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 directly act 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.

[0025] When the sputum plug is formed and blocked in the suction channel 110, the medical staff opens the second connecting hole 121, and the sterilized air or oxygen can enter the connecting channel to make the front end of the insertion tube 100 communicate with the outside world. For ease of understanding, the following content is described with air. By setting the second connecting hole 121, the medical staff can accurately adjust the pressure distribution in the channel, thereby improving the removal efficiency of sputum and sputum plugs, etc., and reducing the discomfort of the patient. Exemplarily, the medical staff can open the second connecting hole 121 when the sputum plug is formed or about to fall off, so that the outside air enters the far end of the suction channel 110, so that the internal pressure of the suction channel 110 is changed from a negative pressure state to a more stable controlled state. Due to the entry of air, the local pressure at the far end of the suction channel 110 rises relatively, reducing the pressure difference between the front and rear of the sputum plug. When the sputum plug is loose or sucked out, the internal pressure of the suction channel 110 transitions smoothly, 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.

[0026] In addition, the second connecting hole 121 can also be used to actively adjust the pressure. When the medical staff closes the second connecting hole 121, the negative pressure in the suction channel 110 continues to increase; after the medical staff opens the second connecting hole 121, the outside air flows in to reduce the pressure. The medical staff can repeatedly press the second connecting hole 121 to form a rapidly changing pressure fluctuation inside the suction channel 110, thereby generating a pressure shock, which helps to loosen and clear the sputum plug and improve the suction efficiency.

[0027] In addition, medical personnel inject a medium (such as a diluent, etc.) into the flow channel 120, and the medium can flow along the flow channel 120 to the distal end of the insertion tube 100. The medium can balance the internal pressure, prevent the continuous negative pressure from affecting the human cavity, and relieve the patient's discomfort, and can also dilute and soften the sputum plug, making it easier to be sucked out, thereby optimizing the sputum removal effect and improving the overall suction efficiency.

[0028] 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 at the elastic pressing portion 130. Exemplarily, the elastic pressing portion 130 has a conducting channel 134 running through opposite ends, the conducting channel 134 can pass through the elastic pressing portion 130, the conducting channel 134 and the first connecting hole 111 are mutually connected, and the first connecting hole 111 is connected to the outside 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 presses the elastic pressing portion 130 lightly 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 started, and operations such as suctioning sputum begin.

[0029] The elastic pressing part 130 can be movably arranged relative to the tube wall of the insertion tube 100. Exemplarily, one end of the elastic pressing part 130 is connected to the hole wall forming the first connecting hole 111, and the other end extends toward the end away from the insertion tube 100. The elastic pressing part 130 is elastic. Under the pressure of the medical staff, the elastic pressing part 130 is deformed and moves radially toward or away from the tube wall of the insertion tube 100. The second connecting hole 121 is located in the moving path of the elastic pressing part 130. During the movement of the elastic pressing part 130 relative to the insertion tube 100, the elastic pressing part 130 moves toward the direction of the tube wall of the insertion tube 100, and it can close the second connecting hole 121. When the medical staff operates the elastic pressing part 130, by applying different forces to press the elastic pressing part 130, the operation has different control effects, reducing the number of required operating parts and improving operating efficiency. For example, by lightly pressing or shielding the elastic pressing portion 130 , the first communication hole 111 is closed and the sputum suction operation begins. By increasing the force of pressing the elastic pressing portion 130 , the second communication hole 121 is closed.

[0030] In some other cases, the elastic pressing portion 130 and the second communication hole 121 can be distributed along the axial direction of the insertion tube 100, the elastic pressing portion 130 can slide along the axial direction of the insertion tube 100, and the second communication hole 121 is located in the sliding path of the elastic pressing portion 130. While pressing the elastic pressing portion 130, the medical staff can synchronously drive the elastic pressing portion 130 so that the elastic pressing portion 130 can cover the second communication hole 121, that is, complete the closing operation of the second communication hole 121, which will not be described in detail here.

[0031] 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 far end of the insertion tube 100 through the flow channel 120 will not continue to flow. As the medium 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, thereby changing the working state of the sputum suction mirror 1 to meet different usage requirements, such as balancing the internal pressure, avoiding 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, medical staff do 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.

[0032] In the embodiments of this application, please continue to refer to Figure 4 The suction channel 110 has a first end 113 and a second end 114 that are far away from each other. The first end 113 extends to the distal end surface 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 surface of the insertion tube 100, and is directly or indirectly connected to the part where sputum suction is required, and the second end 114 is used to communicate with the negative pressure source to provide the suction force required for sputum suction. The first connecting hole 111 is located between the first end 113 and the second end 114, and the suction channel 110 can be set on the side wall surrounding the suction channel 110. In actual operation, when the medical staff holds the sputum suction mirror 1, the fingers can naturally and easily touch the first connecting hole 111 located on the side of the suction channel 110. Compared with being set at other difficult-to-reach locations, this setting conforms to the ergonomic principle and facilitates the operation of medical staff.

[0033] In the examples of this application, please refer to Figure 5 The elastic pressing part 130 is provided with a capsule 131, and the capsule 131 is filled with a medium. The capsule 131 is provided in the elastic pressing part 130, and is filled with a medium, which includes but is not limited to pure water, physiological saline, etc., which are not limited here. Since the medium is pre-filled in the capsule 131 of the elastic pressing part 130, this avoids the cumbersome steps of temporary preparation and delivery of the medium during the operation, thereby improving the operation efficiency of the operation.

[0034] Please continue reading Figure 5, the elastic pressing part 130 or the insertion tube 100 is provided with a puncture structure 132, and the puncture structure 132 includes but is not limited to a puncture needle, a puncture sheet, etc. The second connecting hole 121 is located in the moving path of the capsule 131. When the elastic pressing part 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 part of the capsule 131 can cover the second connecting hole 121 to close the second connecting hole 121. The medical staff increases the strength, the puncture structure 132 punctures the capsule 131, and the medium flows into the flow channel 120 to dilute the sputum, sputum plug, etc. in the insertion tube 100 or the patient's body, and promote the rapid discharge of sputum and sputum plug.

[0035] In one case, the puncture structure 132 is disposed on the elastic pressing portion 130. Furthermore, the second connecting hole 121 may also be located in the moving path of the puncture structure 132, and 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, and 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 proceeds, 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.

[0036] During this period, as the medical staff continues to apply force, before the capsule 131 is punctured, the second communication hole 121 has been closed, eliminating the risk of medium leakage. After the capsule 131 is punctured, the medium can quickly flow into the flow channel 120 until the distal end of the insertion tube 100 to dilute the sputum plug, sputum, etc., promote the rapid discharge of sputum plugs, and reduce the risk of medium leakage.

[0037] When the elastic pressing portion 130 moves relative to the insertion tube 100, the puncture structure 132 can be inserted into the second communicating hole 121 and close the second communicating hole 121. Further, the puncture structure 132 closes the second communicating hole 121. The puncture structure 132 can be inserted into the second communicating hole 121 and cooperate with the second communicating hole 121 to effectively close the second communicating hole 121. Further, the puncture structure 132 closes the second communicating hole 121 to ensure that the second communicating hole 121 can be normally closed. This can avoid medium backflow, waste or leakage. In addition, after the sputum plug is cleared by the medium, the puncture structure 132 closes the second communicating 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 to 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.

[0038] Preferably, the capsule 131 can be elastic, and the medium disposed in the capsule 131 has pressure. The capsule 131 contracts quickly after being punctured, so that the medium is quickly discharged, which greatly saves operation time.

[0039] In another case, the puncture structure 132 is disposed on the tube wall of the insertion tube 100. Furthermore, the puncture structure 132 is disposed 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 to continuously aspirate sputum plugs and sputum, etc. The force driving the elastic pressing portion 130 is increased, 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.

[0040] Compared with the existing method that requires additional operations to introduce the medium, this design of prefabricating the medium in the elastic pressing part 130, using the puncture structure 132 to pierce the capsule 131 and discharge the medium greatly improves the efficiency of the surgical operation. Medical staff do not need to deal with the preparation and delivery of the medium during the operation, and can focus more on the surgical operation, which reduces the operation time and the risks that may be caused by cumbersome operations during the operation.

[0041] 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 a portion of the capsule 131 that is opposite to the second connecting hole 121, and the second portion 1312 is connected to the first portion 1311. The materials or structures of the first portion 1311 and the second portion 1312 are not the same. By having the two portions of the capsule 131 have different materials or structures, the sputum suction mirror 1 can better adapt to surgical conditions and improve overall performance and reliability. In the capsule 131, the volume proportions of the first portion 1311 and the second portion 1312 may be the same or different.

[0042] In one embodiment, please refer to Figure 6 , the first part 1311 can be a membrane structure. During the operation, when it is necessary to puncture the capsule 131 to allow the internal medium to flow into the second communicating hole 121, the membrane structure is relatively thin and soft, and is easier to be punctured by the puncture structure 132. Compared with other relatively thick or tough materials, the membrane structure can be quickly penetrated under a smaller puncture force, thereby ensuring that the medium can flow out smoothly and timely into the second communicating hole 121. This setting not only improves the efficiency of the puncture operation, but also reduces the loss of the puncture structure 132, and prolongs the service life of the puncture structure 132.

[0043] 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 deformation ability. When the second part 1312 contacts the peripheral wall of the second connecting hole 121, it can rely on its elastic deformation ability to closely fit the peripheral wall of the second connecting hole 121 and fill the gap between the capsule 131 and the peripheral wall of the second connecting hole 121, thereby forming 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.

[0044] 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 the puncture efficiency and the sealing effect, that is, when 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.

[0045] 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. Exemplarily, 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 operation of the first connecting hole 111 and the second connecting hole 121. For example, when it is necessary to open the suction channel 110 for conventional 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 misoperation 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.

[0046] 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 sputum 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 fingers of the medical staff. 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 to improve the accuracy and stability of the operation.

[0047] Furthermore, 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 deform significantly, thereby avoiding deformation affecting the matching relationship between the outward-turned edge 112 and the finger, ensuring that the outward-turned edge 112 can always be sealed with the finger, thereby improving the use effect of the insertion tube 100.

[0048] For ease of understanding, this embodiment provides a specific working principle of the insertion tube 100 as follows: When suction begins, the medical staff connects the insertion tube 100 to the negative pressure source, and negative pressure is generated in the suction channel 110. The insertion tube 100 is extended to a designated position, and the medical staff covers the first communication hole 111 with a finger, and negative pressure acts on the distal end of the insertion tube 100 to suck out sputum and the like.

[0049] When sputum may gather in the suction channel 110 to form a sputum plug, the medical staff can open the second communication hole 121 when the sputum plug is formed or about to fall off, so that the outside air enters the far 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 far end of the suction channel 110 rises relatively, reducing the pressure difference before and after the sputum plug.

[0050] When it is necessary to promote the discharge of sputum plugs and sputum, the medical staff can apply force to the elastic pressing part 130 to drive the puncture structure 132 to puncture the capsule 131, and the medium in the capsule 131 can be quickly discharged into the suction channel 110 to dilute and soften the sputum plug and promote its discharge. Alternatively, the medical staff can also directly inject the medium into the second connecting hole 121, and the medium can dilute the sputum plug and promote its discharge.

[0051] After the sputum plug is discharged, the medical staff can continue to apply force, and the puncture structure 132 can be embedded in the second communication hole 121 to close the flow channel 120, and continue to form a stable negative pressure in the suction channel 110 to efficiently discharge secretions such as sputum. In addition, when a sputum plug is still formed in the subsequent suction channel 110, the medical staff can also drive the elastic pressing part 130 to pull the puncture structure 132 out of the second communication hole 121, and continue to inject the medium or balance the air pressure through the second communication hole 121.

[0052] In order to achieve the above-mentioned purpose and other related purposes, the present application provides a sputum suction mirror 1, please refer to Figure 7 The sputum suction mirror 1 includes the aforementioned insertion tube 100 and a handle 200, and the handle 200 is connected to the insertion tube 100. The handle 200 can adapt to the user's holding habits and conform to ergonomics. The handle 200 can improve the operating efficiency of medical staff. In this way, the sputum suction mirror 1 has the beneficial effects of any of the aforementioned solutions, which will not be repeated here.

[0053] In the examples of this application, please refer to Figure 8, the 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 at the lead-out position 210. The lead-out position 210 can ensure that the suction channel 110 can be stably 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 a stable and continuous suction force for the sputum 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 sputum 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 easily touch the two connecting holes without having to rotate the fingers significantly. This setting is adapted 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.

[0054] In addition, the handle 200 of the suction mirror 1 may 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 supply power to the camera module of the suction mirror 1 or transmit signals, etc., 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.

[0055] In the examples of this application, please refer to Fig. 9 The elastic pressing portion 130 of the insertion tube 100 is provided with a protrusion 133, the protrusion 133 abuts against the outer wall of the handle 200, and the protrusion 133 can move relative to the tube wall of the insertion tube 100. Fig.10 As shown, when the elastic pressing portion 130 closes the second connecting hole 121, the protrusion 133 moves into the handle 200. Exemplarily, 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. Fig. 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, and after the raised portion 133 moves into the handle 200, the resistance suddenly disappears. This will bring a "sense of passage" to the operation of the medical staff, that is, the pressing force and the feel have undergone a staged change, which can give the medical staff an operation feedback signal. When the medical staff presses the elastic pressing portion 130, it can be clearly felt that with the movement of the raised portion 133, it is clearly known whether the elastic pressing portion 130 has completed the closing action of the second connecting hole 121, which can effectively avoid misjudgment caused by visual negligence or complex operating environment.

[0056] 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 a human body cavity. After the insertion tube 100 is connected to a 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 setting a second connecting hole 121, thereby improving the efficiency of sputum removal and reducing the patient's discomfort. Exemplarily, the medical staff can open the second connecting hole 121 when a sputum plug is formed or about to fall off, so that the outside air enters the far 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 far 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.

[0057] In addition, the second connecting hole 121 can also be used to actively adjust the pressure. When the second connecting hole 121 is closed, the negative pressure in the suction channel 110 continues to increase; when it is opened, the outside air flows in to reduce the pressure. Medical staff can repeatedly press the second connecting hole 121 to form a rapidly changing pressure fluctuation inside the suction channel 110, thereby generating a pressure shock, which helps to loosen and clear the sputum plug and improve the suction efficiency.

[0058] 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 removal effect and improving the overall suction efficiency.

[0059] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0060] In addition, it should be noted 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 a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0061] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions 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 both the suction channel and the flow channel are distributed along the axial direction of the insertion tube. 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.

2. The insertion tube according to claim 1, characterized in that The insertion tube is provided with an elastic pressing part, the first connecting hole is located in the elastic pressing part, the elastic pressing part can be movably arranged relative to the tube wall of the insertion tube, the second connecting hole is located in the movable path of the elastic pressing part, and during the movement of the elastic pressing part relative to the insertion tube, the elastic pressing part can close the second connecting hole.

3. The insertion tube according to claim 2, characterized in that 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 connecting 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 connecting hole. The puncture structure can puncture the capsule when the capsule closes the second connecting hole, so that the medium can enter the second connecting hole.

4. The insertion tube according to claim 3, characterized in that The puncture structure is arranged on the elastic pressing part, and the second communicating hole is located on the moving path of the puncture structure. When the elastic pressing part moves relative to the insertion tube, the puncture structure can be inserted into the second communicating hole and close the second communicating hole.

5. The insertion tube according to claim 4, characterized in that The capsule body comprises a first part and a second part, the first part is a part of the capsule body opposite to the second connecting 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 connecting hole.

6. The insertion tube according to claim 1, characterized in that The first communicating holes and the second communicating holes are spaced apart from each other along the axial direction or the circumferential direction of the insertion tube.

7. The insertion tube according to any one of claims 1 to 6, characterized in that The outer wall forming the first communicating hole is provided with an outwardly turned 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.

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

9. The sputum suction mirror according to claim 8, 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.

10. The sputum suction mirror according to claim 9, 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 can move relative to the tube wall of the insertion tube. When the elastic pressing portion closes the second connecting hole, the protrusion moves into the handle.

Images