Sputum suction device and flexible lens robot

Abstract

The sputum suction device is used for being connected with a sputum suction catheter of a bronchoscope, the sputum suction device comprises a shell, an elastic sealing film, a first end and a telescopic assembly, and an axial hollow channel is formed in the shell; the elastic sealing film is arranged in the shell; the hollow channel is divided into a first chamber and a second chamber by the elastic sealing film; the first end is arranged on the shell; an air inlet of the first end is used for being connected with a sputum suction catheter, and an air outlet of the first end is communicated with the first cavity; the telescopic assembly is arranged in the second cavity; the telescopic assembly can move in the direction facing or deviating from the air outlet of the first end and is used for opening and closing the air outlet of the first end. The elastic sealing film effectively prevents the liquid leakage problem of the sputum suction device, the telescopic assembly replaces traditional mechanical fit, assembly abrasion caused by too large fit clearance is avoided, the air outlet is opened and closed through movement of the telescopic assembly, abrasion is reduced, and the service life of the sputum suction device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a sputum suction device and a soft mirror robot. Background Art

[0002] At present, intravenous anesthetics are often used during painless endoscopic diagnosis and treatment. Patients under general anesthesia need to establish an artificial airway in time for mechanical ventilation, and clear sputum in time to keep the patient's airway open. Aspirators are widely used clinically to suck sputum out of the respiratory tract. The aspirator includes a suction tube and a connector. One end of the suction tube is connected to the connector, and the other end is inserted into the patient's body; the connector is connected to a negative pressure pump for providing negative pressure. Turning on the negative pressure pump helps to remove sputum from the patient's respiratory tract.

[0003] To prevent back suction, the tracheal plug connector and the suction tube connector are not always connected. The suction device needs to open and close the switch according to demand. For example, a Chinese patent with application number 202020311188.2 discloses a rotary switch type medical closed suction tube. Its specification records that it includes a four-way tube body, a suction tube and a negative pressure control component. The stopcock is turned to make the through hole coaxial with the suction tube. The rotary switch is turned on, and the suction tube passes through the through hole to perform the suction operation.

[0004] However, the existing sputum suction device directly relies on the cooperation of mechanical components for opening, closing and sealing. If the cooperation gap is too large, leakage is likely to occur, and if the cooperation gap is too small, the resistance is too large and the components are likely to be worn.

[0005] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present utility model is to provide a sputum suction device and a soft mirror robot, aiming to solve the problem that the sputum suction device directly relies on the cooperation of mechanical components for opening, closing and sealing, and leakage is likely to occur if the cooperation gap is too large, and the resistance is too large and the components are likely to be worn if the cooperation gap is too small.

[0007] The technical solution of the utility model is as follows:

[0008] A sputum suction device, used for connecting to the sputum suction catheter of a bronchoscope, wherein the sputum suction device includes a shell, an elastic sealing membrane, a first end and a telescopic assembly, wherein the interior of the shell forms an axial hollow channel; the elastic sealing membrane is arranged in the shell; the elastic sealing membrane divides the hollow channel into a first chamber and a second chamber; the first end is arranged on the shell; the air inlet of the first end is used to connect to the sputum suction catheter, and the air outlet of the first end is connected to the first chamber; the telescopic assembly is arranged in the second chamber; the telescopic assembly can move in a direction toward or away from the air outlet of the first end, and is used to open and close the air outlet of the first end.

[0009] The sputum suction device, wherein the shell includes an upper shell and a lower shell, the upper shell is provided with the first end head; the lower shell is detachably connected to the upper shell; one end where the upper shell and the lower shell are connected is provided with the elastic sealing membrane, the upper shell is hollow to form the first chamber, and the lower shell is hollow to form the second chamber.

[0010] The sputum suction device, wherein the lower shell is respectively formed with a first opening and a second opening along a direction away from the upper shell; and the side wall of the second chamber is provided with an axially extending limiting groove for limiting the telescopic assembly.

[0011] The suction device described above, wherein the telescopic assembly includes a sliding portion, a rotating shaft and an elastic member, wherein the sliding portion is arranged in the second chamber and can slide in a direction toward or away from the first chamber; a limit block adapted to the limit groove is provided on the side wall of the sliding portion; the rotating shaft is arranged at the second opening, and the rotating shaft can rotate around the center line of the second chamber; at least a portion of the rotating shaft is inserted into the second chamber and abuts against the sliding portion, so as to push the sliding portion to move in the direction of the first opening; the elastic member is arranged in the second chamber, one end of which abuts against the inner wall of the lower shell, and the other end abuts against the sliding portion, so as to push the sliding portion to move in the direction of the second opening.

[0012] The sputum suction device, wherein an inclined contact surface is provided at one end of the rotating shaft facing the sliding portion, and an angle is formed between the contact surface and the rotation plane of the rotating shaft, and the angle is an acute angle.

[0013] The sputum suction device, wherein a guide hole is formed on the end surface of the sliding portion facing the rotating shaft, a guide rod is provided on the rotating shaft opposite to the guide hole, and the guide rod is plug-assembled with the guide hole.

[0014] The sputum suction device, wherein the guide hole is arranged on the central axis of the sliding part, and a plurality of first abutment teeth are provided on the end surface of the sliding part facing the rotating shaft, and the plurality of first abutment teeth are arranged in a circular array around the guide hole; the guide rod is arranged on the central axis of the rotating shaft, and a plurality of second abutment teeth are provided on the end surface of the rotating shaft, and the plurality of second abutment teeth are arranged in a circular array around the guide rod; the contact surface is formed on the second abutment teeth.

[0015] The sputum suction device, wherein the caliber of the first opening is smaller than the cross-sectional diameter of the second chamber; a limit slot is provided on the inner wall of the lower shell around the first opening; the sliding portion comprises a sliding seat and a push rod provided on the end surface of the sliding seat protruding toward the position of the first opening, and an annular slot is provided on the sliding seat around the push rod; wherein the elastic member is sleeved on the push rod, one end of which is engaged with the limit slot, and the other end of which is engaged with the annular slot.

[0016] The sputum suction device, wherein the sputum suction device also includes a second end head, which is arranged on the shell, the air outlet of the second end head is used for connecting to an external sputum collecting device, and the air inlet of the second end head is connected to the first chamber.

[0017] The present application also discloses a flexible mirror robot, comprising a drive system and any one of the above-described sputum suction devices, wherein the drive system is in transmission connection with the sputum suction device.

[0018] Compared with the prior art, the embodiment of the utility model has the following advantages:

[0019] The sputum suction device disclosed by the utility model comprises a hollow shell body, the shell body is equipped with a first end head, the first end head is used to connect the sputum suction catheter, an elastic sealing membrane is arranged in the shell body, the elastic sealing membrane divides the hollow channel into a first chamber and a second chamber, the elastic sealing membrane can effectively prevent the leakage problem of the sputum suction device, and ensure that the liquid will not leak from the first chamber to the second chamber to affect other internal structures of the sputum suction device.

[0020] In addition, since the second chamber is provided with a telescopic component, the telescopic component can move toward or away from the air outlet of the first end, thereby realizing the opening and closing control of the air outlet of the first end, preventing back suction, and meeting different sputum suction operation requirements. The telescopic component in the sputum suction device replaces the traditional mechanical matching, avoiding the problem of component wear due to excessive matching clearance. The opening and closing of the air outlet is realized by moving the telescopic component, reducing wear and extending the service life of the sputum suction device.

[0021] The sputum suction device disclosed by the utility model can be installed in a flexible endoscope robot. The sputum suction device is transmission-connected to a driving system of the flexible endoscope robot. The opening and closing of the sputum suction device is controlled by the driving system. During endoscopic operation, sputum can be cleared in time to keep the respiratory tract unobstructed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model 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 recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a structural explosion diagram of the sputum suction device in the utility model;

[0024] Figure 2 It is a semi-sectional structural schematic diagram of the sputum suction device (open state) in the utility model;

[0025] Figure 3 It is a semi-sectional structural schematic diagram of the sputum suction device (closed state) in the utility model;

[0026] Figure 4 It is a structural schematic diagram of the lower shell of the utility model;

[0027] Figure 5 It is a structural schematic diagram of the sliding part in the utility model;

[0028] Figure 6 It is a structural schematic diagram of the upper shell in the utility model;

[0029] Figure 7 for Figure 6 Cross-sectional view along AA` direction.

[0030] Among them, 10, shell; 11, hollow channel; 111, first chamber; 112, second chamber; 12, upper shell; 121, limit groove; 122, limit card slot; 13, lower shell; 20, elastic sealing membrane; 30, first end; 40, telescopic component; 41, sliding part; 411, limit block; 412, sliding seat; 413, push rod; 414, annular card slot; 42, rotating shaft; 421, guide rod; 43, elastic member; 50, second end. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1 and Figure 2 In one embodiment of the utility model application, a sputum suction device is disclosed, which is used to connect the sputum suction catheter of a bronchoscope, wherein the sputum suction device includes a shell 10, an elastic sealing membrane 20, a first end head 30 and a telescopic assembly 40, the interior of the shell 10 forms an axial hollow channel 11; the elastic sealing membrane 20 is arranged in the shell 10; the elastic sealing membrane 20 divides the hollow channel 11 into a first chamber 111 and a second chamber 112; the first end head 30 is arranged on the shell 10; the air inlet of the first end head 30 is used to be connected to the sputum suction catheter, and the air outlet of the first end head 30 is connected to the first chamber 111; the telescopic assembly 40 is arranged in the second chamber 112; the telescopic assembly 40 can move in a direction toward or away from the air outlet of the first end head 30, and is used to open and close the air outlet of the first end head 30.

[0033] The sputum suction device disclosed in this embodiment includes a hollow shell 10, and the shell 10 is equipped with a first end 30, and the first end 30 is used to connect to the sputum suction catheter. In actual use, sputum can be sucked into the first cavity from the sputum suction catheter. An elastic sealing membrane 20 is arranged in the shell 10, and the elastic sealing membrane 20 divides the hollow channel 11 into a first chamber 111 and a second chamber 112. The elastic sealing membrane 20 can effectively prevent leakage of the sputum suction device and ensure that the liquid will not leak from the first chamber 111 to the second chamber 112 and affect other internal structures of the sputum suction device.

[0034] In addition, since the telescopic component 40 is provided in the second chamber 112, the telescopic component 40 can move toward or away from the air outlet of the first terminal 30. When the telescopic component 40 is extended, it moves toward the air outlet of the first terminal 30, and can stretch the elastic sealing membrane 20 and seal the air outlet of the first terminal 30; when the telescopic component 40 is contracted, it moves away from the air outlet of the first terminal 30, and the elastic sealing membrane 20 recovers and no longer seals the air outlet of the first terminal 30. The sputum suction device can effectively open or close the channel when necessary, thereby realizing the opening and closing control of the air outlet of the first terminal 30, preventing back suction, and meeting different sputum suction operation requirements. The telescopic component 40 in the sputum suction device replaces the traditional mechanical matching, avoiding the problem of component wear due to excessive matching clearance. The opening and closing of the air outlet is realized by moving the telescopic component 40, reducing wear and extending the service life of the sputum suction device.

[0035] Specifically, as another implementation of this embodiment, the shell 10 includes an upper shell 12 and a lower shell 13, and the upper shell 12 is provided with the first end head 30; the lower shell 13 is detachably connected to the upper shell 12; when maintenance or replacement of internal components, such as the elastic sealing membrane 20, is required; the upper shell 12 and the lower shell 13 can be easily disassembled, avoiding the complicated operation of disassembling the entire sputum suction device.

[0036] Specifically, the elastic sealing membrane 20 is provided at one end where the upper shell 12 and the lower shell 13 disclosed in the present embodiment are connected. The upper shell 12 is hollow to form the first chamber 111, and the lower shell 13 is hollow to form the second chamber 112. The first chamber 111 is connected to the first end 30 provided in the upper shell 12. The second chamber 112 is used to install the telescopic assembly 40. The elastic sealing membrane 20 is provided inside the connection between the upper shell 12 and the lower shell 13. The elastic sealing membrane 20 can isolate the liquid and prevent it from flowing into the second chamber 112 and contaminating the internal components.

[0037] Specifically, the elastic sealing film 20 in this embodiment covers the bottom of the upper shell 12 and is glued around to prevent it from falling off.

[0038] Specifically, the elastic sealing membrane 20 in this embodiment includes a sealing ring and an elastic membrane. The sealing ring is integrally injection molded with the elastic mold. The sealing ring is arranged at the connection between the upper shell 12 and the lower shell 13. The elastic mold radially divides the hollow channel 11. The sealing ring has a good sealing effect and is arranged at the connection to prevent the liquid in the chamber from leaking.

[0039] Specifically, as another implementation of this embodiment, the elastic sealing membrane 20 is any one of a silicone membrane, a nitrile rubber membrane, a polyurethane membrane, and a butyl rubber membrane. The elastic sealing membrane 20 material has good elasticity, can adapt to contact surfaces of different shapes, provide a good sealing effect, and effectively prevent liquid from leaking from the sealing contact surface, thereby ensuring the sealing effect.

[0040] It should be noted that the elastic sealing membrane 20 is only exemplified in this embodiment, but the protection scope of the present invention is not limited to this. Other types of elastic sealing membranes 20 can achieve the technical effects disclosed in this application and should also be within the protection scope of this application as equivalent replacements for the concept of the present invention.

[0041] like Figure 3 , Figure 4 and Figure 5 As shown, as another implementation of this embodiment, the lower shell 13 disclosed in this embodiment is respectively formed with a first opening and a second opening along the direction away from the upper shell 12; the telescopic assembly 40 can move in the first opening toward the air outlet of the first end head 30, so that the elastic sealing membrane 20 is lifted up and seals the air outlet of the first end head 30. A limiting groove 121 extending axially is provided on the side wall of the second chamber 112, and the limiting groove 121 is used in conjunction with the telescopic assembly 40, and the limiting groove 121 is used to limit the position of the telescopic assembly 40.

[0042] Specifically, a limiting block 411 adapted to the limiting groove 121 is provided on the side wall of the sliding portion 41 of the present embodiment, and the limiting block 411 slides axially in the limiting groove 121, that is, the sliding portion 41 can slide in a direction toward or away from the first chamber 111. The limiting block 411 is embedded in the limiting groove 121 of the lower shell 13, and the limiting groove 121 can limit the relative rotation of the limiting block 411. Even if the sliding portion 41 abuts against the rotating shaft 42, the sliding portion 41 cannot rotate in the second chamber 112 due to the limitation of the limiting block 411, thereby ensuring the reliability of the sputum suction device.

[0043] See also Figure 1 , Figure 2 and Figure 3The telescopic assembly 40 disclosed in this embodiment includes a sliding portion 41, a rotating shaft 42 and an elastic member 43. The sliding portion 41 is arranged in the second chamber 112, and can slide in a direction toward or away from the first chamber 111; the rotating shaft 42 is arranged at the second opening, and the rotating shaft 42 can rotate around the center line of the second chamber 112; at least a portion of the rotating shaft 42 is inserted into the second chamber 112 and abuts against the sliding portion 41, so as to push the sliding portion 41 to move in the direction of the first opening, so that the sliding portion 41 lifts the elastic sealing membrane 20 and closes the air outlet of the first end head 30.

[0044] Specifically, the elastic member 43 disclosed in this embodiment is arranged in the second chamber 112, with one end abutting against the inner wall of the lower shell 13, and the other end abutting against the sliding part 41, and is used to push the sliding part 41 to move toward the second opening, so that the elastic sealing membrane 20 is reset and the air outlet of the first end head 30 is opened.

[0045] Specifically, the rotating shaft 42 disclosed in this embodiment is provided with an inclined contact surface at one end facing the sliding part 41, and an angle is formed between the contact surface and the rotation plane of the rotating shaft 42, and the angle is an acute angle. When the rotating shaft 42 rotates, the sliding block is subjected to an upward component force generated by the rotating shaft 42 squeezing the contact surface, and the component force pushes the sliding part 41 to move upward.

[0046] Specifically, a protrusion is provided on the outer side wall of the rotating shaft 42 disclosed in this embodiment, and is used in conjunction with an externally provided shifting structure to play a limiting role.

[0047] Specifically, as another implementation of this embodiment, a guide hole is formed on the end face of the sliding portion 41 facing the rotating shaft 42, and a guide rod 421 is provided on the rotating shaft 42 opposite to the guide hole. The guide rod 421 is plugged and assembled with the guide hole to ensure the guiding stability of the rotating shaft 42 and the sliding portion 41, prevent the rotating shaft 42 from shifting or shaking during operation, ensure the accurate position of the rotating shaft 42, and improve the connection stability of the overall structure.

[0048] Specifically, as another implementation of this embodiment, the guide hole is arranged on the central axis of the sliding part 41, and the guide rod 421 is arranged on the central axis of the rotating shaft 42. The rotating shaft 42 rotates around the central axis of the guide rod 421 to ensure the stability of the rotation, and can also achieve precise guiding of the rotating shaft 42, ensuring the accurate position of the rotating shaft 42 and the sliding part 41, and the connection is more stable during operation.

[0049] Specifically, the sliding portion 41 disclosed in this embodiment is provided with a plurality of first abutment teeth on the end face facing the rotating shaft 42, and the plurality of first abutment teeth are arranged in a circular array around the guide hole; the end face of the rotating shaft 42 is provided with a plurality of second abutment teeth, and the plurality of second abutment teeth are arranged in a circular array around the guide rod 421; the contact surface is formed on the second abutment teeth, and by the circular array arrangement of the plurality of first abutment teeth and the plurality of second abutment teeth, a larger contact area is achieved and the force transmission effect is improved.

[0050] Specifically, the contact surface disclosed in this embodiment is any one of an inclined surface, a curved surface, and a slope surface, and the sliding portion 41 can slide relative to the contact surface toward the air outlet direction of the first end head 30 .

[0051] Specifically, the first abutment tooth disclosed in this embodiment is provided with a first vertical surface, and the second abutment tooth is provided with a second vertical surface, and the first vertical surface, the second vertical surface and the rotation plane of the rotating shaft 42 form a right angle, and the second vertical surface is in contact with the first vertical surface, so as to limit the reverse rotation of the rotating shaft 42 when the first abutment tooth and the second abutment tooth are meshed.

[0052] Specifically, the axial distance between the first abutting tooth and the second abutting tooth in the meshing state and the first abutting tooth sliding to the highest point of the second abutting tooth disclosed in this embodiment is greater than the axial distance between the first abutting tooth and the second abutting tooth in the meshing state and the sliding part 41 sliding to abut the air outlet of the first end head 30. When the sliding part 41 slides to abut the air outlet of the first end head 30, the sliding part 41 cannot rise any further, and the sliding part 41 and the rotating shaft 42 are limited, and the air outlet of the first end head 30 is in a closed state. Because the rotating shaft 42 cannot rotate forward in the limited state, it rotates in the reverse direction at this time, and the elastic member 43 pushes the sliding part 41 back to the meshing state, and the air outlet of the first end head 30 is in an open state.

[0053] See again Figure 4 and Figure 5 As another implementation of this embodiment, the caliber of the first opening is smaller than the cross-sectional diameter of the second chamber 112; the sliding portion 41 includes a sliding seat 412 and a push rod 413 arranged on the end face of the sliding seat 412 protruding toward the first opening, and the push rod 413 moves toward or away from the air outlet of the first end 30 through the first opening. The sliding seat 412 is arranged in the second chamber 112, and the cross-sectional diameter of the sliding seat 412 is larger than the caliber of the first opening. The sliding seat 412 cannot pass through the first opening, thereby ensuring the safety of the sputum suction device.

[0054] Specifically, a limit slot 122 is provided on the inner wall of the lower shell 13 disclosed in the present embodiment around the first opening; an annular slot 414 is provided on the sliding seat 412 around the top rod 413; the elastic member 43 is sleeved on the top rod 413, one end of which is engaged with the limit slot 122, and the other end is engaged with the annular slot 414, so that the position of the elastic member 43 is fixed and not easy to fall off. In addition to being able to generate a downward thrust on the sliding seat 412, the elastic member 43 can also provide a buffer when the sliding seat 412 moves toward the air outlet of the first end head 30, thereby limiting the sliding seat 412 from hitting the lower shell 13 due to excessive impact force, avoiding wear between components, and extending the service life of the sputum suction device.

[0055] Specifically, as another implementation of this embodiment, the elastic member 43 is any one of a thrust spring, an elastic rubber, and an elastic steel sheet. The elastic member 43 can push the elastic part to move in a direction away from the air outlet of the first end head 30, and provide elastic support to improve the reliability of the sputum suction device.

[0056] like Figure 1 , Figure 6 and Figure 7 As shown, as another implementation of this embodiment, the sputum suction device further includes a second terminal 50, which is arranged on the side wall of the housing 10. The air outlet of the second terminal 50 is used to connect to an external sputum collecting device, so that the sucked sputum can be collected to improve the processing efficiency of the sputum suction device. The air inlet of the second terminal 50 is connected to the first chamber 111, and the connection between the air inlet of the second terminal 50 and the first chamber 111 can maintain a certain gas pressure difference, ensuring that the sputum can only be discharged from the air outlet and will not flow back to the sputum suction device.

[0057] As another embodiment of the present application, a flexible endoscope robot is disclosed, comprising a drive system and any one of the above-described sputum suction devices, wherein the drive system is in transmission connection with the sputum suction device. The drive system controls the opening and closing of the sputum suction device, so that sputum can be removed in time during endoscopic operation to keep the respiratory tract unobstructed.

[0058] Specifically, an umbrella-shaped tooth groove is provided at the bottom of the telescopic assembly 40 disclosed in this embodiment, and the umbrella-shaped tooth groove is connected with the umbrella teeth of the driving system, thereby realizing the control of the suction device by the driving system. The umbrella teeth and the umbrella-shaped tooth groove can automatically engage without special alignment, and the assembly is efficient and the transmission is stable.

[0059] In summary, the present application discloses a sputum suction device, including a hollow shell 10, the shell 10 is equipped with a first end 30, the first end 30 is used to connect the sputum suction catheter, an elastic sealing membrane 20 is arranged in the shell 10, the elastic sealing membrane 20 divides the hollow channel 11 into a first chamber 111 and a second chamber 112, the elastic sealing membrane 20 can effectively prevent the leakage problem of the sputum suction device, and ensure that the liquid will not leak from the first chamber 111 to the second chamber 112, affecting other internal structures of the sputum suction device.

[0060] In addition, since the second chamber 112 is provided with a telescopic assembly 40, the telescopic assembly 40 can move toward or away from the air outlet of the first terminal 30, thereby realizing the opening and closing control of the air outlet of the first terminal 30, preventing back suction, and meeting different sputum suction operation requirements. The telescopic assembly 40 in the sputum suction device replaces the traditional mechanical matching, avoiding the problem of component wear due to excessive matching clearance. The opening and closing of the air outlet is realized by moving the telescopic assembly 40, reducing wear and tear, and extending the service life of the sputum suction device.

[0061] The sputum suction device disclosed by the utility model can be installed in a flexible endoscope robot. The sputum suction device is transmission-connected to a driving system of the flexible endoscope robot. The opening and closing of the sputum suction device is controlled by the driving system. During endoscopic operation, sputum can be cleared in time to keep the respiratory tract unobstructed.

[0062] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0063] It should be noted that the utility model takes a sputum suction device as an example to introduce the specific structure and working principle of the utility model, but the application of the utility model is not limited to the sputum suction device, and can also be applied to the production and use of other similar workpieces.

[0064] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sputum suction device, used for connecting the sputum suction catheter of a bronchoscope, characterized in that: The sputum suction device comprises: A shell, wherein an axial hollow passage is formed inside the shell; An elastic sealing membrane is disposed in the housing; the elastic sealing membrane divides the hollow channel into a first chamber and a second chamber; A first terminal is arranged on the housing; an air inlet of the first terminal is used to be connected to the sputum suction catheter, and an air outlet of the first terminal is communicated with the first chamber; A telescopic component is disposed in the second chamber; the telescopic component can move in a direction toward or away from the air outlet of the first end head, and is used to open and close the air outlet of the first end head.

2. The sputum suction device according to claim 1, characterized in that: The housing comprises: An upper shell, on which the first terminal is disposed; A lower shell, detachably connected to the upper shell; The elastic sealing membrane is disposed at one end where the upper shell is connected to the lower shell, the upper shell is hollow to form the first chamber, and the lower shell is hollow to form the second chamber.

3. The sputum suction device according to claim 2, characterized in that: The lower shell is provided with a first opening and a second opening respectively in a direction away from the upper shell; the side wall of the second chamber is provided with an axially extending limiting groove for limiting the telescopic assembly.

4. The sputum suction device according to claim 3, characterized in that: The telescopic assembly comprises: A sliding part is arranged in the second chamber and can slide in a direction toward or away from the first chamber; a limiting block adapted to the limiting groove is arranged on a side wall of the sliding part; A rotating shaft is disposed at the second opening, and the rotating shaft can rotate around the center line of the second chamber; at least a portion of the rotating shaft is inserted into the second chamber and abuts against the sliding part, so as to push the sliding part to move toward the first opening; The elastic member is disposed in the second chamber, has one end abutting against the inner wall of the lower shell, and the other end abutting against the sliding part, and is used to push the sliding part to move toward the second opening.

5. The sputum suction device according to claim 4, characterized in that: An inclined contact surface is provided at one end of the rotating shaft facing the sliding portion, and an angle is formed between the contact surface and the rotation plane of the rotating shaft, and the angle is an acute angle.

6. The sputum suction device according to claim 5, characterized in that: A guide hole is formed on the end surface of the sliding part facing the rotating shaft, and a guide rod is arranged on the rotating shaft opposite to the guide hole, and the guide rod is plug-fitted and assembled with the guide hole.

7. The sputum suction device according to claim 6, characterized in that: The guide hole is arranged on the central axis of the sliding part, and a plurality of first abutment teeth are arranged on the end surface of the sliding part facing the rotating shaft, and the plurality of first abutment teeth are arranged in a ring array around the guide hole; The guide rod is arranged on the central axis of the rotating shaft, and a plurality of second abutment teeth are arranged on the end surface of the rotating shaft, and the plurality of second abutment teeth are arranged in a ring array around the guide rod; Wherein, the contact surface is formed on the second abutting tooth.

8. The sputum suction device according to claim 4, characterized in that: The diameter of the first opening is smaller than the cross-sectional diameter of the second chamber; a limiting groove is provided on the inner wall of the lower shell around the first opening; The sliding part comprises a sliding seat and a push rod disposed on the end surface of the sliding seat protruding toward the first opening, and an annular groove is disposed on the sliding seat around the push rod; Wherein, the elastic member is sleeved on the push rod, one end of which is engaged with the limit slot, and the other end of which is engaged with the annular slot.

9. The sputum suction device according to claim 1, characterized in that: The sputum suction device also includes a second end head, which is arranged on the shell, the air outlet of the second end head is used for connecting to an external sputum collecting device, and the air inlet of the second end head is communicated with the first chamber.

10. A soft mirror robot, characterized in that: It comprises a driving system and the sputum suction device according to any one of claims 1 to 9, wherein the driving system is drivingly connected to the sputum suction device.

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