Suction tube proximal connector, suction tube and suction scope

Abstract

The application discloses a proximal end joint of a sputum suction tube, the sputum suction tube and a sputum suction mirror. The proximal end joint (10) is provided with a ventilation hole (30) in communication with the atmosphere, and the proximal end joint (10) is connected with an extension piece (20) outside the ventilation hole (30). The extension piece (20) extends from the ventilation hole (30) along the length direction of the proximal end joint (10), and the extension piece (20) and the outer wall of the proximal end joint (10) form an atmosphere channel in communication with the ventilation hole (30) and the atmosphere. The atmosphere channel is provided with an atmosphere communication port (50) at the extension end of the extension piece (20). The proximal end joint of the sputum suction tube can be used in common sputum suction tubes and sputum suction mirrors, and can not only avoid the contamination of fingers of medical staff during the suction of sputum and the cross infection, but also has low cost and is suitable for popularization and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a proximal connector of a sputum suction tube, a sputum suction tube and a sputum suction mirror. BACKGROUND

[0002] The sputum suction tube is a medical device for extracting sputum and other secretions from the airway of the human body. The sputum suction tube comprises a proximal connector and a tube body. The proximal end of the proximal connector is connected to a suction device or a suction connecting tube to form a closed negative pressure system; the distal end of the proximal connector is connected to the tube body, and the distal end of the tube body is inserted into the oral cavity or trachea of the patient. Its main function is to remove secretions such as sputum, saliva, blood, etc. in the respiratory tract by negative pressure suction, so as to prevent the respiratory tract from being blocked and restore the respiratory function of the patient.

[0003] The proximal connector of the existing sputum suction tube is mostly a T-shaped connector, which comprises a tubular negative pressure nozzle. In use, one end of the negative pressure nozzle is connected to a suction device, and the other end of the negative pressure nozzle is connected to a tube body. An atmosphere communication tube is further arranged on the negative pressure nozzle and communicates with the negative pressure nozzle. When sucking sputum, a medical staff seals the pipe opening of the atmosphere communication tube with a thumb, and opens the suction device to suck sputum by negative pressure suction. When it is necessary to stop sucking sputum, the medical staff releases the pipe opening of the atmosphere communication tube with the thumb, and the negative pressure nozzle communicates with the atmosphere through the atmosphere communication tube, at which time the sucking of sputum is stopped.

[0004] The use of such a T-shaped connector is to directly suck sputum or other secretions of a patient by sealing the pipe opening of the atmosphere communication tube with the thumb of the medical staff, which has a risk of cross infection:

[0005] ① In the process of suction, sputum or other secretions may splash, splash through the pipe opening of the atmosphere communication tube to the thumb of the medical staff, and contaminate the fingers of the medical staff. Even if the medical staff wears medical gloves, there is still a certain risk of cross infection; ② In the process of moving the thumb away from the pipe opening of the atmosphere communication tube, the negative pressure suction force for sputum gradually weakens, and under certain circumstances, part of the sputum is reduced by the negative pressure suction force, so that it falls back. In addition to the posture of holding the proximal connector, the falling back sputum may move to the atmosphere communication tube to contaminate the fingers of the medical staff; ③ In the process of suction, part of the sputum with high density and hardness that has splashed on the atmosphere communication tube is squeezed to the pipe opening of the atmosphere communication tube by the sputum with small density that is splashed again, which may still contaminate the fingers of the medical staff.

[0006] Of course, some T-shaped joints are also provided with a plunger for closing the atmosphere communication pipe. In the case of closing the atmosphere communication pipe by the plunger, the negative pressure nozzle can suck the sputum in the respiratory tract of the patient, and in the case of separating the plunger from the atmosphere communication pipe, the sputum suction is stopped. However, in actual use, medical staffs usually choose to block the atmosphere communication pipe by the thumb for the convenience of operation, so that the negative pressure nozzle can suck the sputum. Therefore, there is still a risk of cross infection.

[0007] Therefore, the prior art at least has the following technical problems:

[0008] The use of the proximal connector of the existing sputum suction tube has a risk of cross infection. SUMMARY

[0009] The purpose of the present application is to provide a proximal connector of a sputum suction tube, a sputum suction tube and a sputum suction mirror to solve the technical problem of the risk of cross infection in the use of the proximal connector of the sputum suction tube in the prior art. The preferred technical solutions in the many technical solutions provided by the present application can produce many technical effects, which are described in detail below.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0011] In a first aspect, the present application provides a proximal connector of a sputum suction tube, the proximal connector is provided with a ventilation hole for communication with the atmosphere, the proximal connector is connected with an extension piece outside the ventilation hole, the extension piece extends from the ventilation hole along the length direction of the proximal connector, the extension piece and the outer wall of the proximal connector form an atmosphere channel for communication between the ventilation hole and the atmosphere, the atmosphere channel has an atmosphere communication port, and the atmosphere communication port is located at the extension end of the extension piece.

[0012] Optionally or preferably, the ventilation hole is located at the distal end of the atmosphere channel, and the atmosphere communication port is located at the proximal end of the atmosphere channel.

[0013] Optionally or preferably, the atmosphere communication port is inclined, and the atmosphere communication port declines from the distal end of the proximal connector to the proximal end of the proximal connector.

[0014] Optionally or preferably, the extension piece has a first connecting edge, a second connecting edge and a third connecting edge connected with the outer wall of the proximal connector.

[0015] The shape of the first connecting edge is matched with the shape of the ventilation hole; the extension piece is connected outside the lateral edge of the ventilation hole through the first connecting edge; the inner wall of the extension piece is flush with the inner wall of the ventilation hole at the first connecting edge of the extension piece.

[0016] The second connecting edge and the third connecting edge are respectively connected with two ends of the first connecting edge, the second connecting edge and the third connecting edge are arranged in parallel, and the second connecting edge and the third connecting edge are arranged along the length direction of the proximal connector.

[0017] Optionally or preferably, the inner wall of the extension piece is provided with a blocking protrusion extending from the second connecting edge to the third connecting edge; and the blocking protrusion is arranged close to the atmospheric communication port compared with the ventilation hole.

[0018] And / or, the proximal connector sequentially comprises a first constant-diameter section, a diameter-expanding section, a second constant-diameter section, a diameter-reducing section and a third constant-diameter section from the proximal end to the distal end of the proximal connector.

[0019] The ventilation hole is arranged on the second constant-diameter section, and the extension piece is connected to the outside of the second constant-diameter section.

[0020] The first connector is arranged on the first constant-diameter section, and the second connector is arranged on the third constant-diameter section.

[0021] Optionally or preferably, the inner wall edge of the distal end of the ventilation hole and the outer wall edge of the proximal end of the ventilation hole are located on an oblique line b intersecting the axis of the proximal connector, and the oblique line b intersects the blocking protrusion arranged on the extension piece.

[0022] Optionally or preferably, the proximal connector further comprises a connecting sleeve and a limiting piece for limiting the distal end of the connecting sleeve.

[0023] The connecting sleeve is in abutment with the first connecting edge of the extension piece; or the connecting sleeve is connected with the first connecting edge of the extension piece.

[0024] The first connecting edge, the second connecting edge and the third connecting edge of the extension piece are all in sliding fit with the outer wall of the proximal connector, and the first connecting edge, the second connecting edge and the third connecting edge of the extension piece are all closely attached to the outer wall of the proximal connector.

[0025] When the connecting sleeve is in abutment with the first connecting edge of the extension piece, the extension piece further comprises a sleeve ring connected with the first connecting edge, the sleeve ring is in sliding fit with the outer wall of the proximal connector, and is closely attached to the outer wall of the proximal connector; the connecting sleeve is rotationally connected to the proximal connector, and the connecting sleeve can rotate relative to the extension piece and push the extension piece to move linearly relative to the outer wall of the proximal connector.

[0026] When the connecting sleeve is connected with the first connecting edge of the extension piece, the connecting sleeve is in sliding fit with the outer wall of the proximal connector, and the extension piece can move linearly relative to the outer wall of the proximal connector.

[0027] Optionally or preferably, when the connecting sleeve is in sliding fit with the outer wall of the proximal connector, the extending piece is provided with a circumferential groove on the outer wall at one end of the air passage.

[0028] In a second aspect, the present application provides a sputum suction tube, comprising the proximal connector of the sputum suction tube.

[0029] In a third aspect, the present application provides a sputum suction mirror, comprising a handle shell, a sputum suction tube and a visualized illumination module; the sputum suction tube comprises a tube body and the proximal connector of the sputum suction tube.

[0030] The proximal connector is installed in the handle shell, and the handle shell is provided with a window adapted to the extending piece, and the extending piece extends outside the window of the handle shell.

[0031] The visualized illumination module is arranged at the sealed end of the distal end of the tube body.

[0032] Based on the above technical solutions, the present application can at least produce the following technical effects:

[0033] (1) The proximal connector of the sputum suction tube provided by the present application can be used in the following way: when sucking sputum, a medical staff member puts on a medical glove and blocks the atmospheric communication port on the atmospheric passage with a finger (preferably the thumb), and then opens the suction device to suck sputum by negative pressure suction; when stopping sucking sputum, the finger is removed from the atmospheric communication port, and the proximal connector is in atmospheric communication with the atmospheric communication port, at which time the sucking of sputum is stopped. In the present application, the extending piece extends along the length direction of the proximal connector from the air passage, and the extending piece and the outer wall of the proximal connector form an atmospheric passage that connects the air passage and the atmosphere, and the atmospheric communication port at the end of the atmospheric passage is located at the extending end of the extending piece. Therefore, the atmospheric communication port and the air passage are arranged in a staggered manner, and in the process of sucking sputum, since the atmospheric communication port and the air passage are arranged in a staggered manner, a turning airway is formed, and even if the sputum or other secretions of a patient splashes from the air passage, it can be avoided as much as possible to reach the position of the atmospheric communication port; and in the process of removing the finger from the atmospheric communication port, no matter how the medical staff member holds the proximal connector, the sputum or other secretions of the patient is difficult to fall back to the finger of the medical staff member from the atmospheric communication port; at the same time, since the atmospheric communication port and the air passage are arranged in a staggered manner, there is enough space between the air passage and the atmospheric communication port, so that the sputum that splashes into the extending piece and has a relatively high density and hardness can fall back to the proximal connector and be sucked out under the pushing of the sputum that splashes again and has a relatively low density, and in addition, the sputum will be affected by the inlet airflow, so that the sputum is difficult to continue to move towards the air passage and is squeezed towards the atmospheric communication port to contaminate the finger of the medical staff member. Therefore, the proximal structure of the sputum suction tube with the above structure can effectively avoid the contamination of the finger of the medical staff member by the sputum or other secretions of the patient in the process of sucking sputum, and further avoid the possible cross infection.

[0034] (2) The proximal end connector of the sputum suction tube can be used in common sputum suction tubes or sputum suction mirrors, can effectively prevent the fingers of medical staff from being contaminated during the suction of sputum, effectively avoids cross infection, has low cost, and is suitable for popularization and use. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0036] Figure 1 is a structural schematic diagram of embodiment 1 of the present application;

[0037] Figure 2 is a structural schematic diagram of embodiment 2 of the present application; Figure 1 is a sectional view of A-A in

[0038] Figure 3 is a structural schematic diagram of embodiment 2 of the present application;

[0039] Figure 4 is a structural schematic diagram of another angle of embodiment 2 of the present application;

[0040] Figure 5 is a sectional view of B-B in Figure 4

[0041] Figure 6 is a structural schematic diagram of embodiment 3 of the present application;

[0042] Figure 7 is an enlarged schematic diagram of D part in Figure 6

[0043] Figure 8 is a sectional view of C-C in Figure 6

[0044] Figure 9 is an enlarged schematic diagram of E part in Figure 8

[0045] is a structural schematic diagram of the sliding fit of the connecting sleeve and the proximal end connector in embodiment 3 of the present application; Figure 10

[0046] is a positional relationship diagram of the arc-shaped convex strip and the vent in embodiment 1 of the present application; Figure 11

[0047] Figure 12 ​​​​is a structural schematic diagram of embodiment 4 of the present application;

[0048] Figure 13 is a structural schematic diagram of embodiment 5 of the present application;

[0049] Figure 14 is a structural schematic diagram of embodiment 6 of the present application;

[0050] Figure 15 is a structural schematic diagram of embodiment 7 of the present application;

[0051] Figure 16 is an installation schematic diagram of the proximal end connector in embodiment 7 of the present application.

[0052] In the figure: 10, proximal end connector; 101, first connector; 102, second connector; 103, first constant diameter section; 104, diameter expanding section; 105, second constant diameter section; 106, diameter reducing section; 107, third constant diameter section; 20, extension piece; 201, first connecting edge; 202, second connecting edge; 203, third connecting edge; 204, blocking protrusion; 30, air vent; 40, groove; 50, atmospheric air communication port; 60, connecting sleeve; 70, limiting ring; 80, pipe body; 90, handle shell; 100, visualized illumination module; 110, collar. DETAILED DESCRIPTION

[0053] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0054] In the present application, "proximal end" and "distal end" are the relative positions of the structure in the use environment relative to the human body operation, so as to facilitate the description of the positional relationship between the components and facilitate understanding; for the same component, "proximal end" and "distal end" are the relative positional relationship of the component, not absolute; therefore, it should be understood from the angle of realizing the principle of the present application, and cannot deviate from the essence of the present application.

[0055] Embodiment 1:

[0056] Please refer to Figure 1 , Figure 2The proximal end connector of the sputum suction tube has a first connector 101 at one end for connecting with a negative pressure source, and a second connector 102 at the other end for connecting with a tube body 80 of the sputum suction tube; a vent hole 30 is formed in the proximal end connector 10 for communicating with the atmosphere, and an extension piece 20 is connected to the outside of the vent hole 30, the extension piece 20 extends from the vent hole 30 along the length direction of the proximal end connector 10, and the extension piece 20 and the outer wall of the proximal end connector 10 form an atmospheric passage for communicating the vent hole 30 with the atmosphere, the atmospheric passage has an atmospheric communication port 50 located at the extension end of the extension piece 20.

[0057] The proximal end connector of the sputum suction tube has a first connector 101 at one end for connecting with a negative pressure source, and a second connector 102 at the other end for connecting with a tube body 80 of the sputum suction tube; a vent hole 30 is formed in the proximal end connector 10 for communicating with the atmosphere, and an extension piece 20 is connected to the outside of the vent hole 30, the extension piece 20 extends from the vent hole 30 along the length direction of the proximal end connector 10, and the extension piece 20 and the outer wall of the proximal end connector 10 form an atmospheric passage for communicating the vent hole 30 with the atmosphere, the atmospheric passage has an atmospheric communication port 50 located at the extension end of the extension piece 20. Therefore, the atmospheric communication port 50 and the vent hole 30 are arranged in a staggered manner, forming a turning airway. During the sputum suction process, even if the patient's sputum or other secretions splashes from the vent hole 30, it can be avoided to reach the position of the atmospheric communication port 50. Moreover, during the process of moving the finger away from the atmospheric communication port 50, no matter how the medical staff holds the proximal end connector 10, the patient's sputum or other secretions is difficult to fall back to the finger of the medical staff from the atmospheric communication port 50. Meanwhile, due to the staggered arrangement of the atmospheric communication port 50 and the vent hole 30, there is enough space between the vent hole 30 and the atmospheric communication port 50, so that the sputum splashed into the inner wall of the extension piece 20 with high density and hardness may fall back to the proximal end connector 10 and be sucked out under the pushing of the sputum with low density. In addition, the sputum will be affected by the inlet airflow, so that it is difficult to continue to move towards the vent hole 30 and pollute the finger of the medical staff at the atmospheric communication port 50. Therefore, the proximal end structure of the sputum suction tube with the above structure can effectively avoid the pollution of the patient's sputum or other secretions to the finger of the medical staff during the sputum suction process, thereby effectively avoiding the cross infection. The proximal end connector of the sputum suction tube provided by the present application can be used in ordinary sputum suction tubes and sputum suction mirrors, which not only can effectively avoid the pollution of the finger of the medical staff during the sputum suction process, effectively avoiding such cross infection, but also has low cost and is suitable for popularization and use.

[0058] In some embodiments, the vent hole 30 is located at the distal end of the atmosphere passage, and the atmosphere communication port 50 is located at the proximal end of the atmosphere passage. It can be understood that, compared with the prior art, the atmosphere communication port 50 is located at the proximal end of the atmosphere passage, that is, at the proximal end of the proximal connector 10, and only needs to be moved forward and backward by the thumb to operate, and the operation will be more convenient. Of course, the setting direction of the atmosphere passage is not limited by the embodiments of the present application, and the atmosphere communication port 50 can also be arranged at the distal end of the atmosphere passage, and the vent hole 30 is located at the proximal end of the atmosphere passage; as long as the atmosphere passage can be arranged outside the vent hole 30, and the atmosphere communication port 50 is arranged in a staggered manner with the vent hole 30, that is, the setting position of the atmosphere communication port 50 can avoid the sputum or other secretions of the patient from splashing onto the fingers of the medical staff during the sputum suction operation, and at the same time, the setting position of the atmosphere communication port 50 can facilitate the medical staff to block the atmosphere communication port 50 during the sputum suction operation. When the medical staff uses the sputum suction tube, the thumb is usually used to control the atmosphere communication port 50. Therefore, the atmosphere passage is arranged along the length direction of the proximal connector 10, so as to facilitate the medical staff to block the atmosphere communication port 50 by the thumb.

[0059] In some embodiments, the atmosphere communication port 50 is arranged in an inclined manner, and the atmosphere communication port 50 is inclined downward from the distal end of the proximal connector 10 to the proximal end of the proximal connector 10. It can be understood that, because the medical staff usually uses the thumb to control the atmosphere communication port 50 when using the sputum suction tube, the atmosphere communication port 50 is arranged in an inclined manner, so as to have a better adaptation to the shape of the thumb to better control the opening and closing of the atmosphere communication port 50, and the blocking can be more convenient. Therefore, the atmosphere communication port 50 is arranged in an inclined manner to facilitate the medical staff to block by the thumb. Of course, the medical staff can also use other fingers except the thumb to block the atmosphere communication port 50, as long as the blocking can be facilitated and a good blocking effect of the atmosphere communication port 50 can be achieved.

[0060] In some embodiments, the extension piece 20 has a first connecting edge 201, a second connecting edge 202 and a third connecting edge 203 connected to the outer wall of the proximal connector 10;

[0061] The shape of the first connecting edge 201 is adapted to the shape of the vent hole 30; the extension piece 20 is connected to the outer side edge of the vent hole 30 through the first connecting edge 201; and the inner wall of the extension piece 20 is flush with the inner wall of the vent hole 30 at the first connecting edge 201 of the extension piece 20;

[0062] The second connecting edge 202 and the third connecting edge 203 are respectively connected with two ends of the first connecting edge 201, the second connecting edge 202 and the third connecting edge 203 are arranged in parallel, and the second connecting edge 202 and the third connecting edge 203 are arranged along the length direction of the proximal connector 10. It can be understood that the shape of the air hole 30 can be any shape, such as a circle, an ellipse, a rectangle, etc.; however, the first connecting edge 201 of the extension piece 20 needs to be adapted to the shape of the air hole 30, and the inner wall of the extension piece 20 is flush with the inner wall of the air hole 30, which can avoid forming a step at the connection between the extension piece 20 and the air hole 30, thereby avoiding the accumulation of sputum or other secretions at the connection between the extension piece 20 and the air hole 30, forming pollution.

[0063] In some embodiments, the inner wall of the extension piece 20 is provided with a blocking protrusion 204, the blocking protrusion 204 extends from the second connecting edge 202 to the third connecting edge 203; and compared with the air hole 30, the blocking protrusion is arranged close to the atmosphere communication port 50. It can be understood that the arrangement of the blocking protrusion 204 can form a narrow part at this position of the atmosphere channel, which can increase the air inlet wind speed here, and can prevent the sputum or other secretions of the patient from further splashing outward; and the blocking protrusion 204 itself can also play a role in blocking the sputum or other secretions of the patient, the blocking protrusion extends from the second connecting edge 202 to the third connecting edge 203 of the extension piece 20, which can more comprehensively block the sputum or other secretions of the patient, and further avoid the sputum or other secretions of the patient from polluting the fingers of medical staff, thereby avoiding such cross infection as much as possible.

[0064] In some embodiments, the blocking protrusion 204 is an arc-shaped protrusion. It can be understood that the shape of the blocking protrusion 204 is not limited by the present application, and the cross-sectional shape of the blocking protrusion 204 can also be rectangular or other shapes, as long as it can form a narrow part at this position and play a blocking role.

[0065] Please refer to Figure 11 , the direction of the arrow a is the suction direction of the sputum, in some embodiments, the inner wall edge of the distal end of the air hole 30 and the outer wall edge of the proximal end of the air hole 30 are located on the oblique line b intersecting the axis of the proximal connector 10, and the oblique line b intersects the blocking protrusion arranged on the extension piece 20. For example, along the cutting direction of A-A in Figure 2 , the cutting direction of B-B in Figure 4 and the cutting direction of C-C in Figure 6 , the blocking protrusion 204 arranged on the extension piece 20 can be seen. Figure 11As shown in the figure, the inner wall edge of the distal end of the vent hole 30 and the outer wall edge of the proximal end of the vent hole 30 are located on the oblique line b intersecting the axis of the proximal connector 10, and the oblique line b intersects the blocking protrusion 204 provided on the extension sheet 20. It can be understood that this structure limits the height of the blocking protrusion 204, which can prevent sputum or other secretions sprayed from the distal end to the proximal end from splashing onto the fingers of medical personnel from the vent hole 30.

[0066] In some embodiments, the material of the extension sheet 20 includes medical polyurethane or medical silicone rubber. It can be understood that the selection of the material of the extension sheet 20 needs to have a certain hardness and softness, and at the same time has good elasticity. Before the patient is sputum suctioned, the negative pressure level needs to be adjusted according to the patient's condition, and when the negative pressure level is adjusted, the size of the air inlet can be adjusted by blocking part of the atmospheric communication port 50, or the edge of the atmospheric communication port 50 can be directly squeezed or pressed to control the size of the atmospheric communication port 50, thereby adjusting the size of the air inlet. It is easy to know that the size of the opening can be adjusted by both shielding the atmospheric communication port 50 and deforming the edge of the atmospheric communication port 50 by squeezing it, which can be more accurate and delicate, and has better operability. Of course, the material disclosed in the present application is not limited by the present application, and the extension sheet 20 can also be selected from other medical materials that have a certain hardness and softness and at the same time have good elasticity.

[0067] In some embodiments, the material of the extension sheet 20 includes a medical hard material.

[0068] Embodiment 2

[0069] Please refer to Figure 3 、 Figure 4 、 Figure 5 The difference between this embodiment and embodiment 1 is:

[0070] In some embodiments, the proximal connector 10 sequentially includes a first constant diameter section 103, a diameter expanding section 104, a second constant diameter section 105, a diameter reducing section 106, and a third constant diameter section 107 from the proximal end to the distal end of the proximal connector 10;

[0071] Among them, the vent hole 30 is arranged on the second constant diameter section 105, and the extension sheet 20 is arranged on the outside of the second constant diameter section 105;

[0072] The first equal diameter section 103 is provided with a first joint 101 connected with a negative pressure source, and the third equal diameter section 107 is provided with a second joint 102 connected with a tube body 80 of a sputum suction tube. It can be understood that the inner diameter of the second equal diameter section 105 is greater than the inner diameter of the first equal diameter section 103 and also greater than the inner diameter of the third equal diameter section 107. The extension piece 20 is arranged on the second equal diameter section 105, and the sputum suction effect is better, and the sputum is also less likely to splash out of the ventilation hole 30.

[0073] Other embodiments are the same as Embodiment 1.

[0074] Embodiment 3:

[0075] Please refer to Figures 6-10 The difference between the present embodiment and Embodiment 1 is that the proximal end joint 10 further comprises a connecting sleeve 60 and a limiting piece for limiting the distal end of the connecting sleeve 60.

[0076] The connecting sleeve 60 is in abutment with the first connecting edge 201 of the extension piece 20, or the connecting sleeve 60 is connected with the first connecting edge 201 of the extension piece 20.

[0077] The first connecting edge 201, the second connecting edge 202 and the third connecting edge 203 of the extension piece 20 are all in sliding fit with the outer wall of the proximal end joint 10, and the first connecting edge 201, the second connecting edge 202 and the third connecting edge 203 of the extension piece 20 are all tightly attached to the outer wall of the proximal end joint 10.

[0078] When the connecting sleeve 60 is in abutment with the first connecting edge 201 of the extension piece 20, the extension piece 20 further comprises a sleeve ring 110 connected with the first connecting edge 201, the sleeve ring 110 is in sliding fit with the outer wall of the proximal end joint 10, and is tightly attached to the outer wall of the proximal end joint 10; and the first connecting edge 201 of the extension piece 20 is tightly attached to the outer wall of the proximal end joint 10; the connecting sleeve 60 is rotationally connected to the proximal end joint 10, and the connecting sleeve 60 can rotate relative to the extension piece 20 and push the extension piece 20 to move linearly relative to the outer wall of the proximal end joint 10.

[0079] When the connecting sleeve 60 is connected with the first connecting edge 201 of the extension piece 20, the connecting sleeve 60 is in sliding fit with the outer wall of the proximal end joint 10, and the extension piece 20 can move linearly relative to the outer wall of the proximal end joint 10. It can be understood that the connecting sleeve 60 is in abutment with the first connecting edge 201 of the extension piece 20, or the connecting sleeve 60 is connected with the first connecting edge 201 of the extension piece 20, to achieve the effect that the extension piece 20 can move linearly relative to the outer wall of the proximal end joint 10, thereby adjusting the opening size of the ventilation hole 30, and adjusting the maximum negative pressure level according to the condition of the patient.

[0080] In some embodiments, when the connecting sleeve 60 is in abutment with the first connecting edge 201 of the extension piece 20, the sleeve ring 110 is in an integral structure with the extension piece 20, or can not be in an integral structure.

[0081] In some embodiments, when the connecting sleeve 60 is connected with the first connecting edge 201 of the extension piece 20, the connecting sleeve 60 is in an integral structure with the extension piece 20, or can not be in an integral structure.

[0082] In some embodiments, the extension piece 20 is provided with a circumferential groove 40 on the outer wall at one end of the air hole 30, or the groove 40 is formed at the connecting position of the connecting sleeve 60 and the extension piece 20. It can be understood that the groove 40 constitutes a weak deformation part of the extension piece 20. When the finger blocks the atmospheric communication port 50, the finger has a slight pushing force on the extension piece 20, which can make the atmospheric communication port 50 block more tightly, and at the same time, the groove 40 can be slightly deformed. However, even if the connecting sleeve 60 is in sliding fit with the proximal connector 10, the slight pushing force will not make the connecting sleeve 60 and the extension piece 20 move towards the rear end of the proximal connector 10, and will not change the opening degree of the air hole 30, and the weak deformation part will not affect the movement of the connecting sleeve 60 towards the front end of the proximal connector 10.

[0083] In some embodiments, the groove 40 is a V-shaped groove, an arc-shaped groove or a rectangular groove. It can be understood that the shape of the groove 40 is not limited in the present application, as long as the groove 40 can form a weak deformation part, when the finger blocks the atmospheric communication port 50, the finger has a slight pushing force on the extension piece 20, which can make the atmospheric communication port 50 block more tightly, and at the same time, the groove 40 can be slightly deformed. However, even if the connecting sleeve 60 is in sliding fit with the proximal connector 10, the slight pushing force will not make the connecting sleeve 60 and the extension piece 20 move towards the rear end of the proximal connector 10, and will not change the opening degree of the air hole 30, and the weak deformation part will not affect the movement of the connecting sleeve 60 towards the front end of the proximal connector 10.

[0084] In the present embodiment, the specific adjustment method of the opening degree of the air hole 30 is as follows:

[0085] ① When the connecting sleeve 60 is in sliding fit with the outer wall of the proximal connector 10, the medical staff pushes the connecting sleeve 60 to slide on the proximal connector 10, and the connecting sleeve 60 can cover part of the air hole 30 to control the size of the air hole 30, thereby effectively adjusting the negative pressure size, avoiding airway damage and ensuring the sputum suction effect.

[0086] When the connecting sleeve 60 is threadedly connected to the proximal connector 10, the medical staff can move the connecting sleeve 60 relative to the proximal connector 10 by rotating the connecting sleeve 60, but it should be noted that during the rotation of the connecting sleeve 60, when the connecting sleeve 60 is rotated to the appropriate position, the extension piece 20 needs to completely cover the ventilation hole 30, and when the connecting sleeve 60 moves towards the proximal end of the proximal connector 10, the connecting sleeve 60 can cover part of the ventilation hole 30, adjust the size of the ventilation hole 30, and thus effectively adjust the size of the negative pressure, avoid airway injury and ensure the effect of sputum suction.

[0087] In some embodiments, the limiting part is a limiting ring 70 sleeved on the proximal connector 10, and the limiting ring 70 is arranged at the position where the ventilation hole 30 has the largest opening degree. When the connecting sleeve 60 abuts against the limiting ring 70, the connecting sleeve 60 is limited by the limiting ring 70. At this time, the inner wall of the extension piece 20 is flush with the inner wall of the ventilation hole 30, and the splashed sputum or other secretions of the patient can be prevented from falling on this position to form pollution.

[0088] Other embodiments are the same as embodiment 1.

[0089] Embodiment 4:

[0090] Please refer to Figure 12 The present application provides a sputum suction tube, which comprises a tube body 80 and the proximal connector of the sputum suction tube in embodiment 1.

[0091] The sputum suction tube provided by the application, the proximal end connector of the sputum suction tube provided by the application, when sucking sputum, the medical staff seals the atmosphere communication port 50 on the atmosphere channel by the finger (preferably the thumb) after wearing medical gloves, opens the suction device to suck sputum by the way of negative pressure suction; when it is needed to stop sucking sputum, the thumb releases the atmosphere communication port 50, the proximal end connector 10 communicates with the atmosphere through the atmosphere communication port 50, at this time, the sucking of sputum is stopped. Since the extension piece 20 in the application extends along the length direction of the proximal end connector 10 from the air hole 30, the extension piece 20 and the outer wall of the proximal end connector 10 form the atmosphere channel that communicates the air hole 30 with the atmosphere, the atmosphere channel has the atmosphere communication port 50, and the atmosphere communication port 50 is located at the extension end of the extension piece 20. Therefore, the atmosphere communication port 50 and the air hole 30 are arranged in a staggered manner, forming a turning airway. In the process of sucking sputum, since the atmosphere communication port 50 and the air hole 30 are arranged in a staggered manner, even if the sputum or other secretions of the patient splashes from the air hole 30, it can be avoided as much as possible to reach the position of the atmosphere communication port 50; and in the process of moving the finger away from the atmosphere communication port 50, no matter how the medical staff holds the proximal end connector 10, the sputum or other secretions of the patient is difficult to fall back to the finger of the medical staff from the atmosphere communication port 50; at the same time, since the atmosphere communication port 50 and the air hole 30 are arranged in a staggered manner, there is enough space between the air hole 30 and the atmosphere communication port 50, so that the sputum that splashes into the inner wall of the extension piece 20 with high density and high hardness can fall back to the proximal end connector 10 and be sucked out under the pushing of the sputum with low density that splashes again. In addition, the sputum will be affected by the inlet airflow, so that the sputum is difficult to continue to move to the air hole 30 and is squeezed to the atmosphere communication port 50 to contaminate the finger of the medical staff. The finger of the medical staff can be effectively prevented from being contaminated by the sputum or other secretions of the patient in the process of sucking sputum, and cross infection that may occur can be effectively avoided.

[0092] Example 5

[0093] Please refer to Figure 13 The difference between the embodiment and example 1 is that the proximal end connector 10 adopts the proximal end connector of the sputum suction tube in example 2.

[0094] The others are the same as example 4.

[0095] Example 6

[0096] Please refer to Figure 14 The difference between the embodiment and example 1 is that the proximal end connector 10 adopts the proximal end connector of the sputum suction tube in example 3.

[0097] The others are the same as example 4.

[0098] Example 7

[0099] Please refer toFigures 15-16 The present application provides a sputum suction mirror, comprising a handle shell 90, a sputum suction tube and a visualization illumination module 100, the sputum suction tube comprises a tube body 80 and a proximal connector 10 in the above-mentioned embodiment 2; the proximal connector 10 is installed in the handle shell 90, a window is opened on the handle shell 90 and matched with the extension piece 20, and the extension piece 20 extends outside the window of the handle shell 90; the visualization illumination module 100 is arranged at the sealed end of the distal end of the tube body 80. It can be understood that by arranging the window and extending the extension piece 20 outside the window, the inner diameter of the proximal connector 10 can be larger without changing the radial size of the existing handle shell 90, that is, without changing the holding feeling of the existing sputum suction mirror, so that a large channel is created, the sputum suction effect is improved, and the sputum is less likely to splash out of the air vent 30.

[0100] The sputum suction mirror provided by the present application can effectively prevent the fingers of the medical staff from being contaminated by the sputum or other secretions of the patient during the sputum suction process, thereby effectively preventing cross infection.

[0101] In some embodiments, the proximal connector 10 is the proximal connector 10 in the above-mentioned embodiment 1.

[0102] In some embodiments, the proximal connector 10 is the proximal connector 10 in the above-mentioned embodiment 3.

[0103] In some embodiments, the visualization illuminating module 100 comprises a light source and a lens. The light source can be an optical fiber or an LED, and the lens comprises a lens group and an image sensor CMOS or CCD. The visualization illuminating module 100 is used to acquire image information of the distal end of the tube body 80 and transmit to the proximal display device, so that the medical staff can observe the distal end of the tube body 80 from the display device and perform the sputum suction work. The handle shell 90 and the visualization illuminating module 100 are both prior art and will not be described in detail here.

[0104] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A proximal end fitting for a sputum suction tube, characterized in that The proximal connector (10) is provided with a vent hole (30) in communication with the atmosphere, and the proximal connector (10) is connected with an extension piece (20) outside the vent hole (30), the extension piece (20) extends from the vent hole (30) along the length direction of the proximal connector (10), the extension piece (20) and the outer wall of the proximal connector (10) form an atmosphere passage in communication with the atmosphere, and the atmosphere passage is provided with an atmosphere communication port (50) at the extension end of the extension piece (20); the vent hole (30) is located at the distal end of the atmosphere passage, and the atmosphere communication port (50) is located at the proximal end of the atmosphere passage. The extension piece (20) is provided with a first connecting edge (201), a second connecting edge (202) and a third connecting edge (203) connected with the outer wall of the proximal connector (10), the extension piece (20) is connected outside the outer edge of the vent hole (30) through the first connecting edge (201); the second connecting edge (202) and the third connecting edge (203) are respectively connected with the two ends of the first connecting edge (201), the second connecting edge (202) and the third connecting edge (203) are arranged in parallel, and the second connecting edge (202) and the third connecting edge (203) are arranged along the length direction of the proximal connector (10); the inner wall of the extension piece (20) is provided with a blocking protrusion (204) extending from the second connecting edge (202) to the third connecting edge (203); the inner wall edge of the distal end of the vent hole (30) and the outer wall edge of the proximal end of the vent hole (30) are located on the oblique line b intersecting the axis of the proximal connector (10), and the oblique line b intersects the blocking protrusion arranged on the extension piece (20).

2. A proximal end fitting for a sputum tube as claimed in claim 1, wherein, The atmosphere communication port (50) is arranged obliquely, and the atmosphere communication port (50) obliquely descends from the distal end of the proximal connector (10) to the proximal end of the proximal connector (10).

3. A proximal end fitting for a sputum tube as claimed in claim 2, wherein, The shape of the first connecting edge (201) is matched with the shape of the vent hole (30); at the first connecting edge (201) of the extension piece (20), the inner wall of the extension piece (20) is flush with the inner wall of the vent hole (30).

4. A proximal end fitting for a sputum tube as claimed in claim 3, wherein, And compared with the vent hole (30), the blocking protrusion (204) is arranged close to the atmosphere communication port (50); And / or, the proximal connector (10) comprises a first constant diameter section (103), a diameter expansion section (104), a second constant diameter section (105), a diameter reduction section (106) and a third constant diameter section (107) connected in sequence from the proximal end to the distal end of the proximal connector (10); wherein, The vent hole (30) is arranged on the second constant diameter section (105), and the extension piece (20) is connected outside the second constant diameter section (105). One end of the proximal connector (10) has a first connector (101) for connection to a negative pressure source, and the other end of the proximal connector (10) has a second connector (102) for connection to the tube body (80) of the suction catheter; the first connector (101) is located on the first equal diameter section (103), and the second connector (102) is located on the third equal diameter section (107).

5. The proximal end fitting of a sputum tube according to claim 1, wherein, The proximal connector (10) further includes a connecting sleeve (60) and a limiting member for limiting the distal end of the connecting sleeve (60); wherein, The connecting sleeve (60) abuts against the first connecting edge (201) of the extension piece (20); or, the connecting sleeve (60) is connected to the first connecting edge (201) of the extension piece (20); The first connecting edge (201), the second connecting edge (202) and the third connecting edge (203) of the extension piece (20) are all slidably engaged with the outer wall of the proximal connector (10), and the first connecting edge (201), the second connecting edge (202) and the third connecting edge (203) of the extension piece (20) are all tightly attached to the outer wall of the proximal connector (10); When the connecting sleeve (60) abuts against the first connecting edge (201) of the extension piece (20), the extension piece (20) also includes a collar (110) connected to the first connecting edge (201), the collar (110) slides with the outer wall of the proximal connector (10) and is tightly attached to the outer wall of the proximal connector (10); the connecting sleeve (60) is rotatably connected to the proximal connector (10), and the connecting sleeve (60) can rotate relative to the extension piece (20) and push the extension piece (20) to move linearly relative to the outer wall of the proximal connector (10); When the connecting sleeve (60) is connected to the first connecting edge (201) of the extension piece (20), the connecting sleeve (60) slides with the outer wall of the proximal connector (10), and the extension piece (20) can move linearly relative to the outer wall of the proximal connector (10).

6. A proximal end fitting for a sputum tube as defined in claim 5, wherein When the connecting sleeve (60) slides into the outer wall of the proximal connector (10), the extension piece (20) has a groove (40) that surrounds the circumference on the outer wall at one end of the corresponding vent (30).

7. A sputum suction tube, characterized by Includes the proximal connector of the suction catheter as described in any one of claims 1-6.

8. A suctioning scope comprising a handle housing (90), a suctioning tube and a visualization illumination module (100); characterized in that, The suction catheter includes a tube body (80) and a proximal connector of the suction catheter according to any one of claims 1-6; The proximal connector (10) is installed inside the handle housing (90), and the handle housing (90) has a window adapted to the extension piece (20), and the extension piece (20) extends out of the window of the handle housing (90); The visualization lighting module (100) is located at the sealed end of the far end of the tube (80).

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