Saliva suction tube

Abstract

The invention discloses a saliva suction tube, and relates to the technical field of oral medical auxiliary instruments, the saliva suction tube comprises a saliva suction negative pressure pipeline assembly, a joint mechanism, a saliva suction end head mechanism, a saliva backflow prevention mechanism and a negative pressure tube protection mechanism, the saliva suction negative pressure pipeline assembly comprises a deformation negative pressure tube, a connecting ring, a hard connecting tube and a negative pressure interface; the top of the deformation negative pressure pipe is bent leftwards and connected with one end of the hard connecting pipe through a connecting ring, and a negative pressure connector is arranged at the bottom end of the deformation negative pressure pipe. The joint mechanism is mounted at one end of the hard connecting pipe away from the connecting ring; the saliva suction end mechanism comprises a saliva suction head, a middle saliva suction anti-blocking assembly and a side saliva suction anti-blocking assembly, the saliva suction tube can avoid oral mucosa bleeding caused by suction of oral mucosa, the mouth corner limiting protection mechanism can reduce discomfort of a patient when the saliva suction tube is hung at the mouth corner of the patient, and the saliva suction tube is convenient to use. Saliva and blood can be prevented from dripping when the saliva suction tube is taken out of the oral cavity after being used.

Description

Technical Field

[0001] The invention relates to the technical field of oral medical auxiliary instruments, in particular to a saliva suction tube. Background Art

[0002] At present, in the dental department, when doctors perform various dental surgeries in patients' mouths, they usually need to use a saliva suction tube to insert into the patient's mouth to suck out the saliva and blood in the mouth to prevent the saliva and blood from interfering with the dental surgery. After the existing saliva suction tube is placed in the oral cavity, it is then connected to the saliva suction tube through an external negative pressure source. The saliva and blood in the patient's mouth can be sucked away by the saliva suction tube. The end of the saliva suction tube will suck the mucous membrane in the oral cavity, which is easy to cause oral mucosal bleeding. In addition, if the saliva suction tube is hung at the corner of the patient's mouth for a long time, it will also cause discomfort in the corner of the patient's mouth. When the saliva suction tube is taken out of the oral cavity after use, the saliva and blood remaining in the saliva suction tube are easy to drip, affecting the surrounding hygiene. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide a saliva suction tube, which can avoid sucking the oral mucosa and causing bleeding of the oral mucosa. The deformable negative pressure tube can be bent into a required shape as needed, and has better adaptability to the corners of the patient's mouth. The setting of the transparent rubber tube can protect the deformable negative pressure tube, and can also increase the contact area between the deformable negative pressure tube and the patient's oral cavity, and can also facilitate the doctor to control the bending of the deformable negative pressure tube. When the saliva suction tube is hung at the corner of the patient's mouth, the corner limit protection mechanism can reduce the patient's discomfort, and the saliva suction tube can avoid dripping of saliva and blood during the process of taking it out of the mouth after use. It is more hygienic and convenient to use, and can effectively solve the problems in the background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a saliva suction tube, comprising: The saliva suction negative pressure pipeline assembly comprises a deformable negative pressure tube, a connecting ring, a hard connecting tube and a negative pressure interface. The top of the deformable negative pressure tube is bent to the left and connected to one end of the hard connecting tube through the connecting ring. The bottom end of the deformable negative pressure tube is provided with a negative pressure interface. The joint mechanism is installed at the end of the rigid pipe away from the connecting ring; The saliva suction end mechanism comprises a saliva suction head, a middle saliva suction anti-blocking component and a side saliva suction anti-blocking component. The saliva suction head is a cylindrical structure with one end closed and the other end provided with a circular opening. The middle part of the closed end of the saliva suction head is provided with a middle saliva suction anti-blocking component, and the circular opening of the saliva suction head is connected to an end of the joint mechanism away from the hard pipe. The saliva backflow prevention mechanism is installed inside the saliva suction head and the joint mechanism; The negative pressure pipe protection mechanism is sleeved on the outer side of the deformable negative pressure pipe, and the end of the negative pressure pipe protection mechanism is connected to the outer side of the joint mechanism.

[0005] The deformable negative pressure tube adopts a deformable metal thin tube. The bent part of the deformable negative pressure tube is convenient for hanging at the corner of the patient's mouth. The negative pressure tube protection mechanism is used to protect the deformable negative pressure tube, and can also increase the area around the deformable negative pressure tube and the patient's mouth to prevent the deformable negative pressure tube from causing indentations around the patient's mouth. At the same time, the doctor can also use the negative pressure tube protection mechanism to bend the deformable negative pressure tube more conveniently according to needs. The connecting ring connects the deformable negative pressure tube and the hard tube. The joint mechanism is used to connect the hard tube and the saliva suction head, and is also used to install a saliva backflow prevention device. The mechanism has a hard pipe that will not be deformed, and a negative pressure interface that is connected to an external negative pressure source, such as a pipette. The pipette puts the saliva suction head in a negative pressure state through the saliva suction negative pressure pipeline assembly and the joint mechanism. The saliva suction head can absorb saliva and blood in the patient's mouth through the middle saliva suction anti-blocking assembly and the side saliva suction anti-blocking assembly. When the dental surgery is over, the pipette is turned off, and the saliva anti-reflux mechanism can seal the middle saliva suction anti-blocking assembly and the side saliva suction anti-blocking assembly to prevent residual saliva and blood in the saliva suction head from dripping, making it more hygienic to use.

[0006] Furthermore, the joint mechanism includes a joint sleeve, an external threaded sleeve, a tapered portion, a throat portion and a support and mounting sleeve, one end of the joint sleeve is integrally connected with an external threaded sleeve, the outer side of the external threaded sleeve is threadedly connected to the inner side of one end of the hard pipe away from the connecting ring, the other end of the joint sleeve is integrally connected to one end of the tapered portion, the other end of the tapered portion is integrally connected to one end of the throat portion, the other end of the throat portion is integrally connected to one end of the support and mounting sleeve, a tapered cavity is provided in the middle of the inner side of the support and mounting sleeve, and the outer peripheral side of the other end of the support and mounting sleeve is threadedly connected to the inner side of the circular opening of the saliva suction head. The joint mechanism is composed of a support and mounting sleeve, a throat portion, a tapered portion, a joint sleeve and an external threaded sleeve arranged in sequence from left to right, wherein the diameter of the tapered portion close to one end of the throat portion is smaller than the diameter of the other end, the diameter of the tapered cavity close to one end of the throat portion is smaller than the diameter of the other end, and the joint mechanism detachably connects the hard pipe and the saliva suction head together.

[0007] Furthermore, the central saliva suction anti-blocking component includes a central saliva suction circular hole and an anti-blocking groove. A central saliva suction circular hole is opened in the middle of the closed end of the saliva suction head, and six anti-blocking grooves are opened in a circular array at the closed end of the saliva suction head. The six anti-blocking grooves are all connected to the ends of the central saliva suction circular hole. When the bent part of the deformable negative pressure tube is hung at the corner of the patient's mouth and the saliva suction head is located at the bottom of the oral cavity, the saliva suction head is in a negative pressure state, and the blood or saliva at the bottom of the oral cavity can be sucked into the saliva suction head through the central saliva suction hole, and then drawn out through the joint mechanism and the deformable negative pressure tube. The anti-blocking groove is set to prevent the outer end of the central saliva suction hole from being closed when it hits the oral mucosa, thereby preventing the negative pressure in the saliva suction head from sucking the oral mucosa through the central saliva suction hole. When the outer end of the central saliva suction hole hits the oral mucosa, the central saliva suction hole can still suck the blood or saliva in the oral cavity through the anti-blocking groove. Even if there is no blood or saliva, the central saliva suction hole can suck air through the anti-blocking groove, thereby preventing the central saliva suction hole from sucking the oral mucosa.

[0008] Furthermore, the side saliva suction anti-blocking component includes an anti-blocking arc groove, a side saliva suction hole and an oblique groove. The outer peripheral side annular array of the saliva suction head is provided with six anti-blocking arc grooves. The side of the saliva suction head is provided with two side saliva suction holes at the positions corresponding to the two ends of each anti-blocking arc groove. The six anti-blocking arc grooves are respectively arranged corresponding to the six anti-blocking grooves, and each anti-blocking arc groove is connected to the corresponding anti-blocking groove through the oblique groove. The saliva suction head can absorb saliva or blood in the oral cavity through the side saliva suction hole, and increase the position for absorbing saliva or blood. The function of the anti-blocking arc groove is the same as that of the anti-blocking groove, which prevents the oral mucosa from being broken when the side saliva suction hole is against the oral mucosa and causes bleeding. The oblique groove connects the anti-blocking arc groove and the anti-blocking groove together, which is conducive to the saliva or blood in the oral cavity to quickly enter the anti-blocking groove and the anti-blocking arc groove, so that it is quickly sucked into the saliva suction head by the central saliva suction hole or the side saliva suction hole.

[0009] Furthermore, the saliva backflow prevention mechanism includes a spoke rod, a limiting ring, a prism rod, a spring, a conical plug, a cylinder and a round hole plug. The inner side of one end of the hard pipe close to the saliva suction head is connected to the limiting ring through a plurality of spoke rods. The limiting ring is located at the center of the end of the hard pipe. The prism rod is slidably connected in the limiting ring. One end of the prism rod extends into the conical part and is connected to one end of the cylinder. The other end of the cylinder extends into the saliva suction head and is fixedly connected to the round hole plug. The round hole plug is arranged corresponding to the inner end of the central saliva suction circular hole. The part of the prism rod located in the conical part is fixedly sleeved with the conical plug, and the part of the prism rod located between the conical plug and the limiting ring is sleeved with a spring. The elastic force of the spring pushes the conical plug into the conical part, and the prism bar moves relative to the limit ring. The left end of the conical plug blocks the throat, and at the same time, the cylinder drives the round hole plug to block the central suction hole. When the deformation negative pressure tube is in a negative pressure state, the conical plug overcomes the elastic force of the spring, drives the prism bar and the cylinder to move right, and the conical plug moves right to open the throat, and the round hole plug also opens the central suction hole as the cylinder moves right. At this time, the negative pressure state in the deformation negative pressure tube also puts the joint mechanism and the suction head in a negative pressure state, and the suction head passes through the central suction hole. The saliva circular hole can absorb saliva and blood in the patient's mouth. When the external suction device stops working, the spring returns to its original position and stretches, pushing the conical plug, the ridged rod and the cylinder to move left relative to the limit ring. The conical plug completely enters the conical part and blocks the throat. The round hole plug blocks the central saliva suction hole as the cylinder moves left, which can prevent the saliva and blood in the deformed negative pressure tube from flowing back into the saliva suction head through the throat, and can also prevent the saliva and blood remaining in the saliva suction head from dripping out through the central saliva suction hole, thereby improving hygiene.

[0010] Furthermore, the saliva backflow prevention mechanism also includes a particle retaining ring, an oblique connecting rod, a movable cylinder and a side hole. The inner side of the saliva suction head is slidably connected to the movable cylinder, and the inner side of the closed end of the saliva suction head is fixedly connected to the particle retaining ring. The outer side of the particle retaining ring is slidably connected to the inner side of the end of the movable cylinder. The movable cylinder is provided with a side hole at the position corresponding to the side saliva suction circular hole, and the end of the movable cylinder close to the edge rod is connected to the cylinder through two oblique connecting rods. The movable cylinder moves left and right with the cylinder through the oblique connecting rod. When the spring pushes the conical plug, the rib rod and the cylinder to move left relative to the limiting ring, the left end of the movable cylinder abuts against the inside of the closed end of the saliva suction head. At this time, the side hole on the movable cylinder is staggered with the side saliva suction circular hole. When the conical plug, the rib rod and the cylinder move right relative to the limiting ring, the side hole on the movable cylinder corresponds to the side saliva suction circular hole. At this time, the saliva suction head is in a negative pressure state. The saliva suction head can absorb saliva and blood in the oral cavity through the side holes and the side saliva suction circular holes. When the external liquid suction device stops working, the spring resets and rebounds to extend, pushing the conical plug, the rib rod and the cylinder to move left relative to the limiting ring, and the movable cylinder moves left relative to the saliva suction head. The side hole on the movable cylinder is staggered with the side saliva suction circular hole, and the saliva and blood remaining in the saliva suction head will not drip outward through the side holes and the side saliva suction circular hole. The setting of the particle retaining ring prevents some surgical debris in the saliva and blood from entering the space at the left end of the movable cylinder, so as to prevent these surgical debris from affecting the left movement of the movable cylinder relative to the saliva suction head.

[0011] Furthermore, the saliva backflow prevention mechanism also includes a conical filter screen, the conical filter screen is fixedly sleeved on the cylinder, and the edge of the end of the conical filter screen is connected to the end of the movable cylinder. The conical filter screen can filter surgical debris, prevent surgical debris from entering the joint mechanism and the deformation negative pressure tube to cause blockage, and also prevent surgical debris from affecting the left end of the conical plug to smoothly block the throat.

[0012] Furthermore, the negative pressure tube protection mechanism includes a transparent rubber tube, a convex ring, an annular groove, an elastic ring, a plug sleeve and a control sleeve, the outer peripheral side of the end of the support mounting sleeve close to the throat portion is integrally connected with a convex ring, the outer side of the deformable negative pressure tube is sleeved with a transparent rubber tube, the inner side of the end of the transparent rubber tube close to the spit suction head is provided with an inner annular groove corresponding to the convex ring, the outer side of the end of the transparent rubber tube close to the spit suction head is provided with an annular groove, the annular groove is located between the spit suction head and the annular groove, and an elastic ring is installed in the annular groove, the outer side of the end of the deformable negative pressure tube away from the spit suction head is sleeved with a plug sleeve, the outer side of the plug sleeve is sleeved with the inner side of the end of the transparent rubber tube away from the spit suction head, and the outer end of the plug sleeve is integrally connected with a control sleeve.

[0013] Since the deformable negative pressure tube is a thin metal tube, its direct contact with the corners of the patient's mouth or the area around the oral cavity will cause discomfort to the patient and easily form deeper indentations. Therefore, a transparent rubber tube is provided to increase the contact area with the corners of the patient's mouth or the area around the oral cavity, and increase the patient's comfort during use. At the same time, the doctor can also use the transparent rubber tube to better hold the deformable negative pressure tube, thereby bending the deformable negative pressure tube into a required shape, so that the deformable negative pressure tube can be better hung on the corners of the patient's mouth without interfering with the surgical process. The convex ring and the inner ring groove cooperate to better connect the support mounting sleeve with the transparent rubber tube. The transparent rubber tube is fastened to the support mounting sleeve with the help of an elastic ring to prevent the support mounting sleeve from detaching from the transparent rubber tube. A chamfer is provided on the inner side of the left end of the transparent rubber tube, which makes it easier for the transparent rubber tube to be put on the support mounting sleeve during assembly, and the left end of the transparent rubber tube is pressed against the right end of the saliva suction head.

[0014] Furthermore, it also includes a mouth corner limiting protection mechanism, which includes a protective pad, a mouth corner platform, a limiting protrusion and a mounting ring. The bottom of the bending part of the deformable negative pressure tube is provided with an arc-shaped protective pad, and the two ends of the protective pad are respectively connected with two mounting rings in an integral manner. The two mounting rings are both sleeved on the outside of the transparent rubber tube. The bottom of the protective pad is provided with a mouth corner platform, and the two ends of the bottom of the protective pad are respectively connected with two limiting protrusions in an integral manner. The mouth corner platform allows the protective pad to better fit the patient's mouth corner, and the protective pad makes the patient's mouth corner more comfortable. The mounting ring is used to stably install the protective pad on the transparent rubber tube, and the limiting protrusion allows the deformable negative pressure tube and the bending part of the transparent rubber tube to hang more stably at the corner of the mouth.

[0015] Furthermore, it also includes a side saliva suction hole blocking mechanism, which includes a blocking rubber sleeve, a blocking rubber strip and a saliva suction groove. The inner diameter of the blocking rubber sleeve is the same as the outer diameter of the saliva suction head, and three blocking rubber strips are arranged at equal angles on the inner top of the blocking rubber sleeve, and the three blocking rubber strips are arranged corresponding to the three anti-blocking arc grooves on the top of the saliva suction head, and three saliva suction grooves are opened at equal angles on the bottom of the blocking rubber sleeve, and the three saliva suction grooves are arranged corresponding to the three anti-blocking arc grooves at the bottom of the saliva suction head. When the negative pressure in the saliva suction head is insufficient or the saliva and blood in the oral cavity cannot cover the middle of the saliva suction head, the blocking rubber sleeve can be put on the saliva suction head, and the three anti-blocking arc grooves on the top of the saliva suction head are blocked by the three blocking rubber strips on the blocking rubber sleeve, so that the negative pressure in the saliva suction head is concentrated from the central saliva suction hole, the three anti-blocking arc grooves at the bottom, and the side saliva suction hole at the bottom.

[0016] Compared with the prior art, the beneficial effects of the saliva suction tube are: 1. When the outer end of the central saliva suction hole is against the oral mucosa, the central saliva suction hole can still absorb blood or saliva in the oral cavity through the anti-blocking groove. Even if there is no blood or saliva, the central saliva suction hole can absorb air through the anti-blocking groove, thereby preventing the central saliva suction hole from sucking the oral mucosa. The function of the anti-blocking arc groove is the same as that of the anti-blocking groove, which prevents the side saliva suction hole from sucking the oral mucosa and causing bleeding; 2. The deformable negative pressure tube can be bent into the required shape as needed, and it is more adaptable to the corners of the patient's mouth. The setting of the transparent rubber tube can protect the deformable negative pressure tube, increase the contact area between the deformable negative pressure tube and the patient's oral cavity, and facilitate the doctor to control the bending of the deformable negative pressure tube; 3. The mouth corner platform allows the protective pad to be better placed at the corner of the patient's mouth, and the protective pad makes the patient's mouth corner more comfortable. The installation ring is used to firmly install the protective pad on the transparent rubber tube. The limit protrusion allows the bending part of the deformable negative pressure tube and the transparent rubber tube to hang more stably at the corner of the mouth. Therefore, when the saliva suction tube is hung at the corner of the patient's mouth, the mouth corner limit protection mechanism can reduce the patient's discomfort; 4. After the saliva suction tube is used, it can prevent saliva and blood from dripping during the process of taking it out of the mouth, making it more hygienic and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the saliva suction tube of the present invention; Figure 2 The saliva suction tube of the present invention Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 3 It is a schematic diagram of the cross-sectional structure of the saliva suction tube of the present invention; Figure 4 The saliva suction tube of the present invention Figure 3 A schematic diagram of the partially enlarged structure at B in the middle; Figure 5 The saliva suction tube of the present invention Figure 3 A schematic diagram of the partially enlarged structure at C in the middle; Figure 6 This is a schematic diagram of the partial explosion structure of the saliva suction tube of the present invention; Figure 7 It is a partial enlarged structural schematic diagram of the saliva backflow prevention mechanism in the saliva suction tube of the present invention; Figure 8 It is a schematic diagram of the structure of the mouth corner limiting protection mechanism in the saliva suction tube of the present invention; In the figure: 1 saliva suction negative pressure pipeline assembly, 11 deformation negative pressure pipe, 12 connecting ring, 13 hard pipe, 14 negative pressure interface, 2 joint mechanism, 21 joint sleeve, 22 external thread sleeve, 23 tapered part, 24 throat part, 25 support installation sleeve, 3 saliva suction end mechanism, 31 saliva suction head, 32 central saliva suction hole, 33 anti-blocking groove, 34 anti-blocking arc groove, 35 side saliva suction hole, 36 oblique groove, 4 saliva backflow prevention mechanism, 41 spoke rod, 42 limit ring, 43 ridge rod, 44 spring, 4 5 conical plug, 46 cylinder, 47 round hole plug, 48 particle retaining ring, 49 oblique connecting rod, 410 conical filter, 411 movable cylinder, 412 side hole, 5 negative pressure tube protection mechanism, 51 transparent rubber hose, 52 convex ring, 53 annular groove, 54 elastic ring, 55 plug sleeve, 56 control sleeve, 6 corner of mouth limit protection mechanism, 61 protection pad, 62 corner of mouth platform, 63 limit protrusion, 64 installation ring, 7 side saliva suction round hole sealing mechanism, 71 sealing rubber sleeve, 72 sealing rubber strip, 73 saliva suction groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] For example, see Figures 1 to 8 , this embodiment provides a technical solution: a saliva suction tube, comprising a saliva suction negative pressure pipeline assembly 1, a joint mechanism 2, a saliva suction end mechanism 3, a saliva backflow prevention mechanism 4 and a negative pressure tube protection mechanism 5; The saliva suction negative pressure pipeline assembly 1 comprises a deformable negative pressure tube 11, a connecting ring 12, a hard connecting tube 13 and a negative pressure interface 14. The top of the deformable negative pressure tube 11 is bent to the left and connected to one end of the hard connecting tube 13 through the connecting ring 12. The bottom end of the deformable negative pressure tube 11 is provided with a negative pressure interface 14. The joint mechanism 2 is installed at one end of the hard pipe 13 away from the connecting ring 12; The saliva suction end mechanism 3 includes a saliva suction head 31, a middle saliva suction anti-blocking component and a side saliva suction anti-blocking component. The saliva suction head 31 is a cylindrical structure with one end closed and the other end provided with a circular opening. The middle part of the closed end of the saliva suction head 31 is provided with a middle saliva suction anti-blocking component, and the circular opening of the saliva suction head 31 is connected to the end of the joint mechanism 2 away from the hard pipe 13; The joint mechanism 2 includes a joint sleeve 21, an external threaded sleeve 22, a tapered portion 23, a throat portion 24 and a support and mounting sleeve 25. One end of the joint sleeve 21 is integrally connected with the external threaded sleeve 22. The outer side of the external threaded sleeve 22 is threadedly connected to the inner side of one end of the hard pipe 13 away from the connecting ring 12. The other end of the joint sleeve 21 is integrally connected to one end of the tapered portion 23. The other end of the tapered portion 23 is integrally connected to one end of the throat portion 24. The other end of the throat portion 24 is integrally connected to one end of the support and mounting sleeve 25. A tapered cavity is provided in the middle of the inner side of the support and mounting sleeve 25. The outer peripheral side of the other end of the support and mounting sleeve 25 is threadedly connected to the inner side of the circular opening of the saliva suction head 31. The joint mechanism 2 is composed of a support and mounting sleeve 25, a throat portion 24, a tapered portion 23, a joint sleeve 21 and an external threaded sleeve 22 arranged in sequence from left to right, wherein the diameter of the tapered portion 23 at one end close to the throat portion 24 is smaller than the diameter at the other end, and the diameter of the tapered cavity at one end close to the throat portion 24 is smaller than the diameter at the other end. The joint mechanism 2 detachably connects the hard pipe 13 and the saliva suction head 31 together.

[0020] The central saliva suction anti-blocking component includes a central saliva suction circular hole 32 and an anti-blocking groove 33. A central saliva suction circular hole 32 is opened in the middle of the closed end of the saliva suction head 31, and six anti-blocking grooves 33 are opened in a circular array at the closed end of the saliva suction head 31. The six anti-blocking grooves 33 are all connected to the ends of the central saliva suction circular hole 32. When the bent part of the deformable negative pressure tube 11 is hung at the corner of the patient's mouth, the saliva suction head 31 is located at the bottom of the oral cavity, and the saliva suction head 31 is in a negative pressure state. The blood or saliva at the bottom of the oral cavity can be sucked into the saliva suction head 31 through the central saliva suction hole 32, and then drawn away through the joint mechanism 2 and the deformable negative pressure tube 11. The anti-blocking groove 33 is set to prevent the outer end of the central saliva suction hole 32 from being closed when it abuts against the oral mucosa, thereby preventing the negative pressure in the saliva suction head 31 from breaking the oral mucosa through the central saliva suction hole 32. When the outer end of the central saliva suction hole 32 abuts against the oral mucosa, the central saliva suction hole 32 can still suck the blood or saliva in the oral cavity through the anti-blocking groove 33. Even if there is no blood or saliva, the central saliva suction hole 32 can also suck air through the anti-blocking groove 33, thereby preventing the central saliva suction hole 32 from breaking the cavity mucosa.

[0021] The side saliva suction anti-blocking component includes an anti-blocking arc groove 34, a side saliva suction circular hole 35 and an oblique groove 36. Six anti-blocking arc grooves 34 are provided in an annular array on the outer peripheral side of the saliva suction head 31. Two side saliva suction circular holes 35 are provided on the side of the saliva suction head 31 corresponding to the positions at both ends of each anti-blocking arc groove 34. The six anti-blocking arc grooves 34 are respectively arranged corresponding to the six anti-blocking grooves 33, and each anti-blocking arc groove 34 is connected to the corresponding anti-blocking groove 33 through the oblique groove 36. The saliva suction head 31 can suck saliva or blood in the oral cavity through the side saliva suction holes 35, increasing the position for sucking saliva or blood. The anti-blocking arc groove 34 has the same function as the anti-blocking groove 33, preventing the oral mucosa from being broken and bleeding when the side saliva suction holes 35 abut against the oral mucosa. The oblique groove 36 connects the anti-blocking arc groove 34 and the anti-blocking groove 33 together, which is beneficial for the saliva or blood in the oral cavity to quickly enter the anti-blocking groove 33 and the anti-blocking arc groove 34, so as to be quickly sucked into the saliva suction head 31 by the central saliva suction hole 32 or the side saliva suction hole 35.

[0022] The saliva backflow prevention mechanism 4 is installed inside the saliva suction head 31 and the joint mechanism 2; The saliva backflow prevention mechanism 4 includes a spoke rod 41, a limiting ring 42, a prism rod 43, a spring 44, a conical plug 45, a cylinder 46 and a round hole plug 47. The inner side of one end of the hard pipe 13 close to the saliva suction head 31 is connected to the limiting ring 42 through a plurality of spoke rods 41. Four spoke rods 41 can be used, and the four spoke rods 41 are distributed at equal angles around the outer circumference of the limiting ring 42. The limiting ring 42 is located at the center of the end of the hard pipe 13. The prism rod 43 is slidably connected in the limiting ring 42. One end of the prism rod 43 extends into the conical portion 23 and is connected to one end of the cylinder 46. The other end of the cylinder 46 extends into the saliva suction head 31 and is fixedly connected to the round hole plug 47. The round hole plug 47 is arranged corresponding to the inner end of the central saliva suction round hole 32. The part of the prism rod 43 located in the conical portion 23 is fixedly sleeved with the conical plug 45, and the part of the prism rod 43 located between the conical plug 45 and the limiting ring 42 is sleeved with the spring 44. The elastic force of the spring 44 pushes the conical plug 45 into the conical portion 23, and the ridge rod 43 moves relative to the limit ring 42. The left end of the conical plug 45 blocks the throat portion 24, and at the same time, the cylinder 46 drives the round hole plug 47 to block the central saliva suction hole 32. When the deformed negative pressure tube 11 is in a negative pressure state, the conical plug 45 overcomes the elastic force of the spring 44, drives the ridge rod 43 and the cylinder 46 to move right, and the conical plug 45 moves right to open the throat portion 24. The round hole plug 47 also opens the central saliva suction hole 32 as the cylinder 46 moves right. At this time, the negative pressure state in the deformed negative pressure tube 11 also puts the joint mechanism 2 and the saliva suction head 31 in a negative pressure state, and the saliva suction head The saliva and blood in the patient's mouth can be sucked through the central saliva suction hole 32. When the external liquid suction device stops working, the spring 44 returns to its original position and stretches, pushing the conical plug 45, the ridge rod 43 and the cylinder 46 to move left relative to the limit ring 42. The conical plug 45 completely enters the conical portion 23 and blocks the throat portion 24, and the round hole plug 47 blocks the central saliva suction hole 32 as the cylinder 46 moves left, which can prevent the saliva and blood in the deformed negative pressure tube 11 from flowing back into the saliva suction head 31 through the throat portion 24, and can also prevent the saliva and blood remaining in the saliva suction head 31 from dripping out through the central saliva suction hole 32, which is more hygienic.

[0023] The saliva backflow prevention mechanism 4 also includes a particle retaining ring 48, an oblique connecting rod 49, a movable cylinder 411 and a side hole 412. The inner side of the saliva suction head 31 is slidably connected to the movable cylinder 411, and the inner side of the closed end of the saliva suction head 31 is fixedly connected to the particle retaining ring 48. The outer side of the particle retaining ring 48 is slidably connected to the inner side of the end of the movable cylinder 411. The movable cylinder 411 is provided with a side hole 412 at the position corresponding to the side saliva suction circular hole 35. The end of the movable cylinder 411 close to the edge rod 43 is connected to the cylinder 46 through two oblique connecting rods 49. The movable cylinder 411 moves left and right with the cylinder 46 through the oblique connecting rod 49. When the spring 44 pushes the conical plug 45, the ridge rod 43 and the cylinder 46 to move left relative to the limiting ring 42, the left end of the movable cylinder 411 abuts against the inside of the closed end of the saliva suction head 31. At this time, the side hole 412 on the movable cylinder 411 is staggered with the side saliva suction hole 35. When the conical plug 45, the ridge rod 43 and the cylinder 46 move right relative to the limiting ring 42, the side hole 412 on the movable cylinder 411 corresponds to the side saliva suction hole 35. At this time, the saliva suction head 31 is in a negative pressure state, and the saliva suction head 31 can suck the oral cavity through the side hole 412 and the side saliva suction hole 35. Saliva and blood. When the external aspirator stops working, the spring 44 returns to its original position and stretches, pushing the conical plug 45, the angular rod 43 and the cylinder 46 to move left relative to the limit ring 42, and the movable cylinder 411 moves left relative to the saliva suction head 31. The side hole 412 on the movable cylinder 411 is staggered from the side saliva suction hole 35, and the saliva and blood remaining in the saliva suction head 31 will not drip outward through the side hole 412 and the side saliva suction hole 35. The particle retaining ring 48 is set to prevent some surgical debris in the saliva and blood from entering the space at the left end of the movable cylinder 411, thereby preventing these surgical debris from affecting the left movement of the movable cylinder 411 relative to the saliva suction head 31.

[0024] The saliva backflow prevention mechanism 4 further includes a conical filter 410, which is fixedly sleeved on the cylinder 46, and the edge of the end of the conical filter 410 is connected to the end of the movable cylinder 411. The conical filter 410 can filter surgical debris to prevent surgical debris from entering the joint mechanism 2 and the deformable negative pressure tube 11 to cause blockage, and can also prevent surgical debris from affecting the left end of the conical plug 45 to smoothly block the throat 24.

[0025] The negative pressure tube protection mechanism 5 is sleeved on the outer side of the deformable negative pressure tube 11 , and the end of the negative pressure tube protection mechanism 5 is connected to the outer side of the joint mechanism 2 .

[0026] The negative pressure tube protection mechanism 5 includes a transparent rubber tube 51, a convex ring 52, an annular groove 53, an elastic ring 54, a plug sleeve 55 and a control sleeve 56. The outer peripheral side of the end of the support and installation sleeve 25 close to the throat 24 is integrally connected with the convex ring 52. The outer side of the deformation negative pressure tube 11 is sleeved with a transparent rubber tube 51. The inner side of the end of the transparent rubber tube 51 close to the saliva suction head 31 is provided with an inner ring groove corresponding to the convex ring 52. The outer side of the end of the transparent rubber tube 51 close to the saliva suction head 31 is provided with an annular groove. 53, the annular groove 53 is located between the saliva suction head 31 and the annular groove 53, and an elastic ring 54 is installed in the annular groove 53, a plug sleeve 55 is sleeved on the outer side of one end of the deformation negative pressure tube 11 away from the saliva suction head 31, the outer side of the plug sleeve 55 is sleeved on the inner side of one end of the transparent rubber tube 51 away from the saliva suction head 31, and the outer end of the plug sleeve 55 is integrally connected with a control sleeve 56, the control sleeve 56 is sleeved on the deformation negative pressure tube 11, and the outer diameter of the control sleeve 56 is the same as the outer diameter of the transparent rubber tube 51.

[0027] Since the deformable negative pressure tube 11 is a thin metal tube, its direct contact with the corners of the patient's mouth or the area around the oral cavity will cause discomfort to the patient and easily form deeper indentations. Therefore, a transparent rubber tube 51 is provided to increase the contact area with the corners of the patient's mouth or the area around the oral cavity, thereby increasing the patient's comfort during use. At the same time, the doctor can also use the transparent rubber tube 51 to better hold the deformable negative pressure tube 11, thereby bending the deformable negative pressure tube 11 into a required shape, allowing the deformable negative pressure tube 11 to be better hung on the corners of the patient's mouth without interfering with the surgical process. The convex ring 52 and the inner ring groove cooperate to better connect the support mounting sleeve 25 with the transparent rubber tube 51. The transparent rubber tube 51 is fastened and sleeved on the support mounting sleeve 25 with the help of an elastic ring 54 to prevent the support mounting sleeve 25 from detaching from the transparent rubber tube 51. A chamfer is provided on the inner side of the left end of the transparent rubber tube 51, so that the transparent rubber tube 51 is easier to be sleeved on the support mounting sleeve 25 during assembly, and the left end of the transparent rubber tube 51 is pressed against the right end of the saliva suction head 31.

[0028] When in use, the deformable negative pressure tube 11 adopts a deformable metal thin tube, and the bent part of the deformable negative pressure tube 11 is convenient to hang on the corner of the patient's mouth. The negative pressure tube protection mechanism 5 is used to protect the deformable negative pressure tube 11, and can also increase the area around the deformable negative pressure tube 11 and the patient's oral cavity to prevent the deformable negative pressure tube 11 from causing indentations around the patient's oral cavity. At the same time, the doctor can also use the negative pressure tube protection mechanism 5 to more conveniently bend the deformable negative pressure tube 11 as needed, the connecting ring 12 connects the deformable negative pressure tube 11 and the hard connecting tube 13, the joint mechanism 2 is used to connect the hard connecting tube 13 and the saliva suction head 31, and is also used The saliva backflow prevention mechanism 4 is installed, wherein the hard pipe 13 will not be deformed, and the negative pressure interface 14 is connected to an external negative pressure source, such as a pipette. The pipette puts the saliva suction head 31 in a negative pressure state through the saliva suction negative pressure pipeline component 1 and the joint mechanism 2. The saliva suction head 31 can absorb saliva and blood in the patient's mouth through the middle saliva suction anti-blocking component and the side saliva suction anti-blocking component. When the dental surgery is completed, the pipette is turned off, and the saliva backflow prevention mechanism 4 can seal the middle saliva suction anti-blocking component and the side saliva suction anti-blocking component to prevent the residual saliva and blood in the saliva suction head 31 from dripping, making it more hygienic to use.

[0029] For example 2, please refer to Figures 1 to 8 This embodiment provides a technical solution: a saliva suction tube. The structure of this embodiment is roughly the same as that of the first embodiment, except that: It also includes a mouth corner limiting protection mechanism 6, which includes a protective pad 61, a mouth corner platform 62, a limiting protrusion 63 and a mounting ring 64. An arc-shaped protective pad 61 is provided at the bottom of the bending part of the deformable negative pressure tube 11, and two mounting rings 64 are integrally formed and connected at both ends of the protective pad 61. The two mounting rings 64 are both sleeved on the outside of the transparent rubber tube 51. A mouth corner platform 62 is provided at the bottom of the protective pad 61, and two limiting protrusions 63 are integrally formed and connected at both ends of the bottom of the protective pad 61. The protective pad 61, the limiting protrusion 63 and the mounting ring 64 are all made of cotton cloth or gauze, and are skin-friendly. The mouth corner platform 62 allows the protective pad 61 to better rest on the patient's mouth corners, and the protective pad 61 makes the patient's mouth corners more comfortable. The mounting ring 64 is used to firmly mount the protective pad 61 on the transparent hose 51. The limiting protrusion 63 allows the deformable negative pressure tube 11 and the bending part of the transparent hose 51 to hang more stably on the mouth corners.

[0030] For example 3, please refer to Figures 1 to 8 This embodiment provides a technical solution: a saliva suction tube. The structure of this embodiment is roughly the same as that of the second embodiment, except that: The side saliva suction hole sealing mechanism 7 is also included, and the side saliva suction hole sealing mechanism 7 includes a sealing rubber sleeve 71, a sealing rubber strip 72 and a saliva suction groove 73. The inner diameter of the sealing rubber sleeve 71 is the same as the outer diameter of the saliva suction head 31, and three sealing rubber strips 72 are arranged at equal angles on the inner top of the sealing rubber sleeve 71, and the three sealing rubber strips 72 are respectively arranged corresponding to the three anti-blocking arc grooves 34 on the top of the saliva suction head 31, and three saliva suction grooves 73 are opened at equal angles on the bottom of the sealing rubber sleeve 71, and the three saliva suction grooves 73 are respectively arranged corresponding to the three anti-blocking arc grooves 34 on the bottom of the saliva suction head 31. When the negative pressure in the saliva suction head 31 is insufficient or the saliva or blood in the oral cavity cannot cover the middle of the saliva suction head 31, the sealing rubber sleeve 71 can be put on the saliva suction head 31, and the three anti-blocking arc grooves 34 on the top of the saliva suction head 31 can be blocked by means of the three sealing rubber strips 72 on the sealing rubber sleeve 71, so that the negative pressure in the saliva suction head 31 can be concentrated from the central saliva suction hole 32, the three anti-blocking arc grooves 34 at the bottom and the side saliva suction hole 35 at the bottom.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A saliva suction tube, characterized in that: include: A saliva suction negative pressure pipeline assembly (1), comprising a deformable negative pressure tube (11), a connecting ring (12), a hard connecting tube (13) and a negative pressure interface (14), wherein the top of the deformable negative pressure tube (11) is bent to the left and connected to one end of the hard connecting tube (13) via the connecting ring (12), and the bottom end of the deformable negative pressure tube (11) is provided with a negative pressure interface (14); A joint mechanism (2) is mounted on an end of the hard pipe (13) away from the connecting ring (12); The saliva suction end mechanism (3) comprises a saliva suction head (31), a middle saliva suction anti-blocking component and a side saliva suction anti-blocking component, wherein the saliva suction head (31) is a cylindrical structure with one end closed and the other end provided with a circular opening, a middle saliva suction anti-blocking component is provided in the middle of the closed end of the saliva suction head (31), and the circular opening of the saliva suction head (31) is connected to an end of the joint mechanism (2) away from the hard pipe (13); The saliva backflow prevention mechanism (4) is installed inside the saliva suction head (31) and the joint mechanism (2); The negative pressure pipe protection mechanism (5) is sleeved on the outside of the deformable negative pressure pipe (11), and the end of the negative pressure pipe protection mechanism (5) is connected to the outside of the joint mechanism (2).

2. The saliva suction tube according to claim 1, characterized in that: The joint mechanism (2) comprises a joint sleeve (21), an externally threaded sleeve (22), a tapered portion (23), a throat portion (24) and a support and mounting sleeve (25); one end of the joint sleeve (21) is integrally connected to the externally threaded sleeve (22); the outer side of the externally threaded sleeve (22) is threadedly connected to the inner side of one end of the hard pipe (13) away from the connecting ring (12); the other end of the joint sleeve (21) is integrally connected to one end of the tapered portion (23); the other end of the tapered portion (23) is integrally connected to one end of the throat portion (24); the other end of the throat portion (24) is integrally connected to one end of the support and mounting sleeve (25); a tapered cavity is provided in the middle of the inner side of the support and mounting sleeve (25); the outer peripheral side of the other end of the support and mounting sleeve (25) is threadedly connected to the inner side of the circular opening of the saliva suction head (31).

3. The saliva suction tube according to claim 2, characterized in that: The central saliva suction anti-blocking component comprises a central saliva suction circular hole (32) and an anti-blocking groove (33); a central saliva suction circular hole (32) is provided in the middle of one closed end of the saliva suction head (31); six anti-blocking grooves (33) are provided in a circular array at one closed end of the saliva suction head (31); the six anti-blocking grooves (33) are all connected to the ends of the central saliva suction circular hole (32).

4. The saliva suction tube according to claim 3, characterized in that: The side saliva suction anti-blocking component comprises an anti-blocking arc groove (34), a side saliva suction circular hole (35) and an oblique groove (36); six anti-blocking arc grooves (34) are provided in an annular array on the outer circumference of the saliva suction head (31); two side saliva suction circular holes (35) are provided on the side surface of the saliva suction head (31) at positions corresponding to the two ends of each anti-blocking arc groove (34); the six anti-blocking arc grooves (34) are respectively arranged corresponding to the six anti-blocking grooves (33); and each anti-blocking arc groove (34) is connected to the corresponding anti-blocking groove (33) via the oblique groove (36).

5. The saliva suction tube according to claim 4, characterized in that: The saliva backflow prevention mechanism (4) comprises an angular rod (43), a spring (44), a conical plug (45), a cylinder (46) and a round hole plug (47); the inner side of one end of the hard pipe (13) close to the saliva suction head (31) is connected to a limiting ring (42) via a plurality of spokes (41); the limiting ring (42) is located at the center of the end of the hard pipe (13); the angular rod (43) is slidably connected in the limiting ring (42); one end of the angular rod (43) extends to the conical plug (45); The conical portion (23) is provided in a manner that the cylindrical portion (46) is connected to one end of the cylinder (46), the other end of the cylinder (46) extends into the saliva suction head (31) and is fixedly connected to a round hole plug (47), the round hole plug (47) being arranged corresponding to the inner end of the central saliva suction round hole (32), the portion of the prism (43) located in the conical portion (23) being fixedly sleeved with a conical plug (45), and the portion of the prism (43) located between the conical plug (45) and the limiting ring (42) being sleeved with a spring (44).

6. The saliva suction tube according to claim 5, characterized in that: The saliva backflow prevention mechanism (4) further comprises a particle retaining ring (48), an oblique connecting rod (49) and a movable cylinder (411); the inner side of the saliva suction head (31) is slidably connected to the movable cylinder (411); the inner side of a closed end of the saliva suction head (31) is fixedly connected to the particle retaining ring (48); the outer side of the particle retaining ring (48) is slidably connected to the inner side of the end of the movable cylinder (411); a side hole (412) is provided at a position of the movable cylinder (411) corresponding to the side saliva suction circular hole (35); and one end of the movable cylinder (411) close to the edge rod (43) is connected to the cylinder (46) via two oblique connecting rods (49).

7. The saliva suction tube according to claim 6, characterized in that: The saliva backflow prevention mechanism (4) further comprises a conical filter (410), the conical filter (410) is fixedly sleeved on the cylinder (46), and the end edge of the conical filter (410) is connected to the end of the movable cylinder (411).

8. The saliva suction tube according to claim 2, characterized in that: The negative pressure tube protection mechanism (5) comprises a transparent rubber tube (51), a convex ring (52), an annular groove (53), an elastic ring (54), a plug sleeve (55) and a control sleeve (56); the outer peripheral side of one end of the support and mounting sleeve (25) close to the throat portion (24) is integrally formed with the convex ring (52); the outer side of the deformable negative pressure tube (11) is sleeved with the transparent rubber tube (51); the inner side of one end of the transparent rubber tube (51) close to the saliva suction head (31) is provided with an inner ring groove corresponding to the convex ring (52); the transparent rubber tube (51) is provided with a plurality of inner ring grooves corresponding to the convex ring (52); and the transparent rubber tube (51) is provided with a plurality of inner ring grooves corresponding to the convex ring (52). An annular groove (53) is formed on the outer side of one end of the deformable negative pressure tube (11) close to the saliva suction head (31), the annular groove (53) is located between the saliva suction head (31) and the annular groove (53), and an elastic ring (54) is installed in the annular groove (53), a plug sleeve (55) is sleeved on the outer side of one end of the deformable negative pressure tube (11) away from the saliva suction head (31), the outer side of the plug sleeve (55) is sleeved on the inner side of one end of the transparent rubber tube (51) away from the saliva suction head (31), and the outer end of the plug sleeve (55) is integrally connected with a control sleeve (56).

9. The saliva suction tube according to claim 8, characterized in that: The invention also comprises a mouth corner limiting protection mechanism (6), wherein the mouth corner limiting protection mechanism (6) comprises a protective pad (61), a mouth corner platform (62), a limiting protrusion (63) and a mounting ring (64); a circular arc-shaped protective pad (61) is provided at the bottom of the bending part of the deformable negative pressure tube (11); two mounting rings (64) are integrally formed and connected to the two ends of the protective pad (61); the two mounting rings (64) are both sleeved on the outside of the transparent rubber tube (51); a mouth corner platform (62) is provided at the bottom of the protective pad (61); and two limiting protrusions (63) are integrally formed and connected to the two ends of the bottom of the protective pad (61).

10. The saliva suction tube according to claim 4, characterized in that: The invention also comprises a side saliva suction circular hole blocking mechanism (7), wherein the side saliva suction circular hole blocking mechanism (7) comprises a blocking rubber sleeve (71), a blocking rubber strip (72) and a saliva suction groove (73), wherein the inner diameter of the blocking rubber sleeve (71) is the same as the outer diameter of the saliva suction head (31), and three blocking rubber strips (72) are arranged at equal angles on the inner top of the blocking rubber sleeve (71), and the three blocking rubber strips (72) are arranged correspondingly to the three anti-blocking arc grooves (34) on the top of the saliva suction head (31), and three saliva suction grooves (73) are arranged at equal angles on the bottom of the blocking rubber sleeve (71), and the three saliva suction grooves (73) are arranged correspondingly to the three anti-blocking arc grooves (34) on the bottom of the saliva suction head (31).

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