Saliva aspirator capable of being connected with trachea cannula

Abstract

The utility model discloses a saliva aspirator capable of being connected with a trachea cannula. The saliva aspirator comprises a saliva aspiration tube, a saliva aspiration head and a connecting sleeve which is fixedly arranged outside the end of the trachea cannula in a matched mode. A connector is arranged at the rear end of the saliva suction tube; the front end of the saliva suction tube is detachably connected with the rear end of the saliva suction head; the front end of the saliva suction head is detachably connected with the rear end of the connecting sleeve. The sputum suction device has the advantages that the sputum suction device is matched with an external negative pressure suction device, residual sputum in an airway of a patient can be sucked outwards, saliva in a mouth of the patient can also be sucked outwards, the sputum suction device is multipurpose and high in use adaptability, the hollow tube head can be bent and deformed, the hollow tube head can be bent into a needed shape so as to extend into the mouth of the patient from a proper angle, and the sputum suction device is convenient to use. Scattered outward negative pressure suction of saliva is performed by arranging the saliva suction holes, and isolation protection is performed by arranging the diaphragm, so that the negative pressure suction force to the oral mucosa of a patient can be effectively reduced, then the negative pressure damage to the oral mucosa of the patient is reduced, and the use comfort of the patient is good.

Description

Technical Field

[0001] The utility model relates to the technical field of medical care products, in particular to a saliva aspirator which can be connected to an endotracheal tube. Background Art

[0002] As the name suggests, a saliva aspirator is a nursing product used to suck out saliva. Common ones include suction tubes. When the patient has a lot of saliva in his mouth, or during oral surgery, such as tooth fillings, which causes a lot of saliva in the patient's mouth, a saliva aspirator is needed to suck out the saliva in the patient's mouth in time to avoid the patient choking due to excessive saliva in the mouth.

[0003] For special patients, such as those with an endotracheal tube in their mouths, the existing saliva aspirator is not convenient to connect to the end of the endotracheal tube to suck out the sputum remaining in the patient's airway, making it difficult to use. In addition, the saliva suction hole opened at the front end of the existing saliva aspirator is generally large. When the saliva in the patient's mouth is sucked out by negative pressure for a long time, it is easy to cause negative pressure damage to the patient's oral mucosa due to the negative pressure attraction, making the patient uncomfortable to use.

[0004] In this regard, the inventor of this patent combined clinical experience, thought about the problems encountered in clinical work, read a large amount of scientific research materials and literature, and through searching and novelty, gradually conceived and designed this application to solve related technical problems. Utility Model Content

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the purpose of the present invention is to provide a saliva aspirator that can be connected to an endotracheal tube.

[0006] To achieve one of the above objectives, a saliva aspirator connectable to an endotracheal tube according to an embodiment of the present invention comprises a saliva aspirator tube, a saliva aspirator head, and a connecting sleeve adapted to be fixed to the outside of the endotracheal tube end;

[0007] The rear end of the saliva suction tube is provided with a connector adapted to be connected to an external negative pressure suction device; the front end of the saliva suction tube is detachably connected to the rear end of the saliva suction head; the front end of the saliva suction head is detachably connected to the rear end of the connecting sleeve.

[0008] In addition, the saliva aspirator connectable to an endotracheal tube according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the rear end of the connecting sleeve is provided with a sleeve adapted to be fixed to the outside of the front end of the saliva suction head, and the inner wall of the connecting sleeve is evenly provided with multiple sealing rubber rings adapted to be fixed to the outside of the tracheal tube end.

[0010] According to one embodiment of the present invention, the saliva suction head includes a bendable and deformable hollow tube head and a central control handle connected to the rear end of the hollow tube head to form an integral body;

[0011] The sleeve adapter is fixed to the outside of the front end of the hollow tube head; the front end of the saliva suction tube is detachably connected to the rear end of the central control handle.

[0012] According to one embodiment of the present invention, the outer wall of the front end of the hollow tube head is provided with an external thread, and the inner wall of the sleeve head is provided with an internal thread engaged with the external thread.

[0013] According to one embodiment of the present invention, the outer wall of the front end of the hollow tube head is cut inward to form a circle of concave steps, the surface of the concave steps is provided with the external thread, and the connection between the outer wall of the hollow tube head and the concave steps is cut obliquely to form a smooth transition part.

[0014] According to one embodiment of the present invention, the front end of the hollow tube head protrudes forward to form a smooth protrusion located in front of the external thread, and a plurality of saliva suction holes penetrating into the interior of the front end of the hollow tube head are evenly opened on the surface of the smooth protrusion.

[0015] According to an embodiment of the present invention, a layer of membrane is adhered to the surface of the smooth protrusion to cover the multiple saliva suction holes, and micropores are opened on the membrane to connect the multiple saliva suction holes.

[0016] According to one embodiment of the present invention, the middle portion of the central control handle is recessed inward to form an anti-slip recessed portion suitable for hand gripping, and the surface of the anti-slip recessed portion is provided with anti-slip lines.

[0017] According to one embodiment of the present invention, the front end of the central control handle is provided with a front connector, and the rear end is provided with a rear connector;

[0018] The rear end of the hollow tube head is threadedly connected to the front connecting head; the front end of the saliva suction tube is threadedly connected to the rear connecting head.

[0019] According to one embodiment of the present invention, the saliva suction tube is made of transparent plastic material, and the hollow tube head is made of memory metal material.

[0020] The beneficial effects of the utility model are:

[0021] First, the saliva aspirator that can be connected to an endotracheal tube provided by the present application, when implemented in conjunction with an external negative pressure suction device, can not only perform negative pressure suction on the sputum remaining in the patient's airway, but also perform negative pressure suction on the saliva in the patient's mouth, so as to suck out as much sputum remaining in the patient's airway or saliva in the patient's mouth as possible, making the present application multi-purpose and highly adaptable.

[0022] Second, when the connecting sleeve is fixed to the outside of the endotracheal tube end placed in the patient's mouth, the provided sealing rubber ring can not only be fixed to the outside of the endotracheal tube end to play a certain fixing role, but also play a certain sealing role, so that when the connecting sleeve is fixed to the outside of the endotracheal tube end placed in the patient's mouth, the connection between them is well sealed and not easy to leak air or sputum to the outside.

[0023] Third, when using the present application, the hollow tube head is bendable and deformable, so that it can be easily bent into the desired shape to be inserted into the patient's mouth from a suitable angle to draw out the saliva in the mouth. Especially when performing oral surgery on the patient, such as filling a tooth, there will be operating tools in the patient's mouth, which will form an obstruction. At this time, when drawing out the saliva in the patient's mouth, the hollow tube head can be bent to insert it into the patient's mouth at a suitable angle. In this way, the present application is more adaptable.

[0024] Fourthly, by providing the smooth protrusion, it is not easy to scratch the skin, mucous membranes and other tissues in the patient's mouth due to its good smoothness, making the application more reliable and safer to use. By providing multiple saliva suction holes to perform decentralized outward negative pressure suction of saliva, the negative pressure attraction to the patient's oral mucosa can be reduced, and then the negative pressure damage to the patient's oral mucosa can be reduced, making the patient more comfortable to use.

[0025] Fifth, by providing the diaphragm with micropores connecting multiple saliva suction holes for isolation and protection, the negative pressure attraction to the patient's oral mucosa can be further reduced, and then the negative pressure damage to the patient's oral mucosa can be further reduced, making the patient more comfortable to use.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0028] Figure 1 This is a schematic diagram of the overall planar structure of the saliva aspirator that can be connected to an endotracheal tube according to the present invention;

[0029] Figure 2 This is a cross-sectional view of the saliva aspirator that can be connected to an endotracheal tube according to the present invention;

[0030] Figure 3 yes Figure 2 Enlarged view of E in the middle;

[0031] Figure 4 This is a sectional exploded view of the saliva aspirator that can be connected to an endotracheal tube according to the present invention;

[0032] Figure 5 This is a reference diagram of the saliva aspirator connectable to an endotracheal tube of the utility model in a state of use connected to the endotracheal tube;

[0033] Figure 6 yes Figure 5 Enlarged view of middle F;

[0034] Reference numerals:

[0035] Saliva suction device 1000 that can be connected to endotracheal tube;

[0036] Saliva suction tube 10;

[0037] Connector 101;

[0038] Screw head B102;

[0039] Saliva attracting head 20;

[0040] Hollow pipe head 201;

[0041] External thread 2011;

[0042] Concave Steps 2012;

[0043] Smooth Transition Department 2013;

[0044] Smooth protrusion 2014;

[0045] Saliva Attraction Hole 2015;

[0046] Diaphragm 2016;

[0047] Lobe A2017;

[0048] Center control grip 202;

[0049] Anti-slip recessed portion 2021;

[0050] Anti-slip texture 2022;

[0051] Front connector 2023;

[0052] rear connector 2024;

[0053] Connecting sleeve 30;

[0054] Hood 301;

[0055] Internal thread 3011;

[0056] Sealing rubber ring 302;

[0057] endotracheal tube 2000;

[0058] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0059] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout the specification represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings of the specification, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0062] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0063] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0064] The saliva aspirator 1000 connectable to an endotracheal tube according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0065] Reference Figures 1 to 6 As shown, the saliva suction device 1000 that can be connected to the endotracheal tube according to an embodiment of the present invention includes a saliva suction tube 10, a saliva suction head 20, and a connecting sleeve 30 adapted to be fixed to the end of the endotracheal tube 2000;

[0066] Among them, the rear end of the saliva suction tube 10 is provided with a connector adapted to be connected to an external negative pressure suction device; the front end of the saliva suction tube 10 is detachably connected to the rear end of the saliva suction head 20; the front end of the saliva suction head 20 is detachably connected to the rear end of the connecting sleeve 30.

[0067] Based on the above, it can be clearly seen that, in specific implementation, the present application is mainly used as a saliva aspirator 1000 that can be connected to a tracheal tube.

[0068] Specifically, when applying the present application, for special patients, such as when a tracheal tube 2000 is placed in the mouth, the connecting sleeve 30 is fixed to the outside of the end of the tracheal tube 2000 placed in the patient's mouth, so that the present application can be used in conjunction with an external negative pressure suction device to remove the sputum remaining in the patient's airway, so that the patient is not easily choked by a large amount of sputum remaining in the airway. If it is necessary to perform negative pressure suction on the saliva in the patient's mouth, the connecting sleeve 30 can be removed to directly place the end of the saliva suction head 20 at a suitable position in the patient's mouth, and cooperate with an external negative pressure suction device to perform negative pressure suction on the saliva in the patient's mouth. In this way, the present application can be used simply.

[0069] Obviously, the use of the above-mentioned application will have the following technical effects:

[0070] In conjunction with an external negative pressure suction device, the present application can not only perform negative pressure suction on the sputum remaining in the patient's airway, but also perform negative pressure suction on the saliva in the patient's mouth, so as to suck out as much sputum remaining in the patient's airway or saliva in the patient's mouth as possible, making the present application multi-purpose and highly adaptable.

[0071] Furthermore, through the above-mentioned optimized design, the overall structure of the present application is highly practical and has good use effect.

[0072] Furthermore, in specific implementation, Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, the rear end of the connecting sleeve 30 is provided with a sleeve 301 adapted to be fixed to the outside of the front end of the saliva suction head 20, and the inner wall of the connecting sleeve 30 is evenly ringed inward with multiple sealing rubber rings 302 adapted to be fixed to the outside of the end of the tracheal tube 2000.

[0073] Therefore, the comparison Figure 5 and Figure 6 As shown, when the connecting sleeve 30 is fixed to the outside of the end of the endotracheal tube 2000 placed in the patient's mouth, the provided sealing rubber ring 302 can not only be fixed to the outside of the end of the endotracheal tube 2000 to play a certain fixing role, but also play a certain sealing role, so that when the connecting sleeve 30 is fixed to the outside of the end of the endotracheal tube 2000 placed in the patient's mouth, the connection between them is well sealed and not easy to leak air or sputum to the outside.

[0074] Furthermore, in the specific implementation, Figure 1 、 Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the saliva suction head 20 includes a bendable and deformable hollow tube head 201 and a central control handle 202 connected to the rear end of the hollow tube head 201 to form an integral body;

[0075] The sleeve 301 is adapted to be fixed to the outside of the front end of the hollow tube head 201 ; the front end of the saliva suction tube 10 is detachably connected to the rear end of the central control handle 202 .

[0076] From this, it can be clearly seen that when the present application is actually used, the hollow tube head 201 is bendable and deformable, so that it can be easily bent into the desired shape to be inserted into the patient's mouth from a suitable angle to draw out the saliva in the mouth. Especially when performing oral surgery on the patient, such as filling a tooth, there will be operating tools in the patient's mouth, which will form an obstruction. At this time, when the saliva in the patient's mouth is to be drawn out, the hollow tube head 201 can be bent to be inserted into the patient's mouth at a suitable angle. In this way, the present application is more adaptable.

[0077] Furthermore, the central control handle 202 is provided for easy hand-held operation, making the present application easy to operate.

[0078] Preferably, in this technical solution, the control Figure 3 As shown, according to one embodiment of the present invention, the outer wall of the front end of the hollow tube head 201 is provided with an external thread 2011 , and the inner wall of the sleeve head 301 is provided with an internal thread 3011 engaged with the external thread 2011 .

[0079] Thus, the sleeve 301 is threadedly connected to the front end of the hollow tube head 201, so that the connection between them is firm and not easy to loosen, and the disassembly between them is convenient.

[0080] Therefore, the saliva suction head 20 and the connecting sleeve 30 can be easily assembled and disassembled from each other.

[0081] In addition, during the specific implementation, continue to compare Figure 3 As shown, according to one embodiment of the present invention, the outer wall of the front end of the hollow tube head 201 is cut inward to form a circle of concave steps 2012, and the surface of the concave steps 2012 is provided with the external thread 2011. The connection between the outer wall of the hollow tube head 201 and the concave steps 2012 is cut obliquely to form a smooth transition portion 2013.

[0082] In this regard, it is clear that since the connection between the outer wall of the hollow tube head 201 and the recessed step 2012 is cut obliquely to form a smooth transition portion 2013, even when the connecting sleeve 30 is not used, the connection between the outer wall of the hollow tube head 201 and the recessed step 2012 can be smooth, so that when it is inserted into the patient's mouth, it is not easy to scratch the skin, mucous membrane and other tissues in the patient's mouth, making the application reliable and safe to use.

[0083] Preferably, in this technical solution, or control Figure 3 As shown, according to one embodiment of the present invention, the front end of the hollow tube head 201 protrudes forward to form a smooth protrusion 2014 located in front of the external thread 2011, and a plurality of saliva suction holes 2015 are evenly opened on the surface of the smooth protrusion 2014 and penetrate into the interior of the front end of the hollow tube head 201.

[0084] Therefore, by providing the smooth protrusion 2014, it is not easy to scratch the skin, mucous membrane and other tissues in the patient's mouth due to its good smoothness, making the application more reliable and safer to use.

[0085] Moreover, by providing a plurality of saliva suction holes 2015 to perform decentralized outward negative pressure suction of saliva, the negative pressure attraction force on the patient's oral mucosa can be reduced, thereby reducing the negative pressure damage to the patient's oral mucosa, making the patient more comfortable to use.

[0086] Furthermore, in the specific implementation, Figure 3 and Figure 4 As shown, according to one embodiment of the present invention, a layer of diaphragm 2016 is adhered to the surface of the smooth protrusion 2014 to cover the multiple saliva suction holes 2015, and the diaphragm 2016 is provided with micropores connecting the multiple saliva suction holes 2015, and the diaphragm 2016 is preferably made of cloth.

[0087] Therefore, by providing the diaphragm 2016 with micropores connecting multiple saliva suction holes 2015 for isolation and protection, the negative pressure attraction to the patient's oral mucosa can be further reduced, and then the negative pressure damage to the patient's oral mucosa can be further reduced, making the patient more comfortable to use.

[0088] Therefore, through the above-mentioned optimized design, the overall use effect of the present application can be effectively improved.

[0089] Again, in this technical solution, Figure 1 、 Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the middle portion of the central control handle 202 is recessed inward to form an anti-slip recessed portion 2021 suitable for hand gripping, and the surface of the anti-slip recessed portion 2021 is provided with anti-slip lines 2022.

[0090] Therefore, when the medical staff holds the central control handle 202 to operate the present application, they hold the anti-slip recess 2021 and contact the anti-slip groove 2022, so that the anti-slip effect is good, so that the reliability of the present application is better.

[0091] Furthermore, in a specific implementation, according to one embodiment of the present invention, the front end of the central control handle 202 is provided with a front connector 2023 , and the rear end is provided with a rear connector 2024 ;

[0092] Among them, the rear end of the hollow tube head 201 is threadedly connected to the front connecting head 2023; the front end of the saliva suction tube 10 is threadedly connected to the rear connecting head 2024.

[0093] Specific, contrast Figure 4 As shown, the rear end of the hollow tube head 201 is provided with a screw head A2017 threadedly connected to the front connecting head 2023, and the front end of the saliva suction tube 10 is provided with a screw head B102 threadedly connected to the rear connecting head 2024.

[0094] It should be added that, according to an embodiment of the present invention, the saliva suction tube 10 is made of a transparent plastic material, and the hollow tube head 201 is made of a memory metal material.

[0095] It should be further added that, in a specific implementation, according to the saliva aspirator 1000 connectable to an endotracheal tube provided in an embodiment of the present invention, the length of the hollow tube head 201 is preferably 5.0 cm-8.0 cm, so as to be neither too long nor too short.

[0096] Other embodiments and the like are not described here as examples.

[0097] To sum up, the saliva aspirator 1000 that can be connected to an endotracheal tube provided in the present application, when implemented in conjunction with an external negative pressure suction device, can not only perform negative pressure suction on the sputum remaining in the patient's airway, but also perform negative pressure suction on the saliva in the patient's mouth, so as to suck out as much sputum remaining in the patient's airway or saliva in the patient's mouth as possible, making the present application multi-purpose and highly adaptable.

[0098] Moreover, when the connecting sleeve 30 is fixed to the outside of the end of the endotracheal tube 2000 placed in the patient's mouth, the provided sealing rubber ring 302 can not only be fixed to the outside of the end of the endotracheal tube 2000 to play a certain fixing role, but also play a certain sealing role, so that when the connecting sleeve 30 is fixed to the outside of the end of the endotracheal tube 2000 placed in the patient's mouth, the connection between them is well sealed and not easy to leak air or sputum to the outside.

[0099] In addition, when the present application is actually used, the hollow tube head 201 is bendable and deformable, so that it can be easily bent into the desired shape so as to be inserted into the patient's mouth from a suitable angle to draw out the saliva in the mouth. Especially when performing oral surgery on the patient, such as filling a tooth, there will be operating tools in the patient's mouth, which will form an obstruction. At this time, when the saliva in the patient's mouth is to be drawn out, the hollow tube head 201 can be bent so that it can be inserted into the patient's mouth at a suitable angle. In this way, the present application is more adaptable.

[0100] Furthermore, by providing the smooth protrusion 2014, it is not easy to scratch the skin, mucous membranes and other tissues in the patient's mouth due to its good smoothness, making the application more reliable and safe to use. By providing multiple saliva suction holes 2015 to perform decentralized outward negative pressure suction of saliva, the negative pressure attraction to the patient's oral mucosa can be reduced, and then the negative pressure damage to the patient's oral mucosa can be reduced, making the patient more comfortable to use.

[0101] Again, by providing the diaphragm 2016 with micropores connecting multiple saliva suction holes 2015 for isolation and protection, the negative pressure attraction to the patient's oral mucosa can be further reduced, and then the negative pressure damage to the patient's oral mucosa can be further reduced, making the patient more comfortable to use.

[0102] Furthermore, the saliva aspirator 1000 that can be connected to the endotracheal tube provided by this application is indeed extremely practical and has excellent use effect, which makes this application bound to have good market promotion value, and this application will inevitably be very popular and will be effectively popularized.

[0103] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0104] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A saliva aspirator connectable to an endotracheal tube, characterized in that: It includes a saliva suction tube, a saliva suction head and a connecting sleeve adapted to be fixed to the outside of the end of the endotracheal tube; The rear end of the saliva suction tube is provided with a connector adapted to be connected to an external negative pressure suction device; the front end of the saliva suction tube is detachably connected to the rear end of the saliva suction head; the front end of the saliva suction head is detachably connected to the rear end of the connecting sleeve; The rear end of the connecting sleeve is provided with a sleeve adapted to be fixed to the front end of the saliva suction head, and the inner wall of the connecting sleeve is evenly provided with a plurality of sealing rubber rings adapted to be fixed to the outside of the tracheal tube end; The saliva suction head includes a bendable and deformable hollow tube head and a central control handle connected to the rear end of the hollow tube head to form an integral body; The sleeve adapter is fixed to the outside of the front end of the hollow tube head; the front end of the saliva suction tube is detachably connected to the rear end of the central control handle.

2. The saliva aspirator connectable to an endotracheal tube according to claim 1, characterized in that: The outer wall of the front end of the hollow pipe head is provided with an external thread, and the inner wall of the sleeve head is provided with an internal thread engaged with the external thread.

3. The saliva aspirator connectable to an endotracheal tube according to claim 2, characterized in that: The outer wall of the front end of the hollow tube head is cut inward to form a circle of concave steps, and the surface of the concave steps is provided with the external thread. The connection between the outer wall of the hollow tube head and the concave steps is cut obliquely to form a smooth transition part.

4. The saliva aspirator connectable to an endotracheal tube according to claim 2, characterized in that: The front end of the hollow tube head protrudes forward to form a smooth protrusion located in front of the external thread, and a plurality of saliva suction holes penetrating into the interior of the front end of the hollow tube head are evenly opened on the surface of the smooth protrusion.

5. The saliva aspirator connectable to an endotracheal tube according to claim 4, characterized in that: A layer of diaphragm is adhered on the surface of the smooth protrusion to cover the plurality of saliva suction holes, and micropores communicating with the plurality of saliva suction holes are opened on the diaphragm.

6. The saliva aspirator connectable to an endotracheal tube according to claim 1, characterized in that: The middle portion of the central control handle is recessed inward to form an anti-slip recessed portion suitable for hand gripping, and the surface of the anti-slip recessed portion is provided with anti-slip lines.

7. The saliva aspirator connectable to an endotracheal tube according to claim 1, characterized in that: The front end of the central control handle is provided with a front connector, and the rear end is provided with a rear connector; The rear end of the hollow tube head is threadedly connected to the front connecting head; the front end of the saliva suction tube is threadedly connected to the rear connecting head.

8. The saliva aspirator connectable to an endotracheal tube according to any one of claims 1 to 7, characterized in that: The saliva suction tube is made of transparent plastic material, and the hollow tube head is made of memory metal material.

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