Portable multi-channel glottis cover

Abstract

The invention relates to the technical field of medical instruments, in particular to a portable multi-channel glottis cover. Comprising an external cylinder, the external cylinder is fixedly connected with an air guide pipe, the external cylinder is fixedly connected with a flow guide pipe, the flow guide pipe is fixedly connected with an inflator pump, and the inflator pump is provided with a flow blocking unit; the flow blocking unit comprises first protruding rings distributed at intervals, the first protruding rings distributed at intervals are communicated with the inflator pump, and the inflator pump is communicated with second protruding rings distributed at intervals. Through the shape design and staggered arrangement of the first convex rings and the second convex rings, a plurality of annular cavities with opposite volume changes are formed in cooperation with the esophagus of a patient, when the first convex rings and the second convex rings are extruded by reflux gastric juice, the directions of counter-acting force provided by the adjacent annular cavities after the adjacent annular cavities are pressed are different, and the counter-acting force is uniform. The counter-acting force in different directions can effectively disperse external force, the deformation quantity of the first convex ring and the second convex ring is reduced, and therefore the probability of sealing failure is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a portable multi-channel glottic mask. Background Art

[0002] The glottic mask (laryngeal mask) is a medical device used to maintain a patent airway, particularly in anesthesia and emergency care due to its ease of installation. Typically consisting of a mask body, a catheter, and a fixture, it is suitable for patients experiencing difficulty intubating during emergency procedures, providing a rapid ventilation solution. During use, the glottic mask fully covers the laryngeal airway, seals the esophageal entrance, and establishes an artificial airway through a drainage tube (to prevent gastric reflux that could affect the mask's function).

[0003] Although routine clinical practice involves draining the stomach through a gastric tube before glottic mask placement, this approach has two limitations: First, it's difficult to completely clear gastric fluid, and second, due to the continuous secretion of gastric fluid, new gastric fluid can accumulate after surgery. This potential risk is particularly acute after glottic mask placement. When gastric fluid refluxes, the accumulated fluid in the stomach, under pressure, can break through the closed structure of the glottic mask, triggering an airway reflux event. This can not only lead to severe respiratory damage such as aspiration pneumonia, but in extreme cases, it can even endanger the patient's life. Summary of the Invention

[0004] In order to overcome the above shortcomings, the present invention provides a portable multi-channel glottic mask.

[0005] The technical implementation scheme of the present invention is as follows: a portable multi-channel glottic mask, comprising an external tube, the external tube being fixedly connected to an airway tube, the airway tube being fixedly connected to and in communication with a support shell, the support shell being fixedly connected to a cuff, the cuff being in communication with a first inflation tube, the first inflation tube being fixedly connected to the external tube, the external tube being fixedly connected to a flow guide tube, the flow guide tube being fixedly connected to the support shell, the flow guide tube being fixedly connected to an inflation tube, the inflation tube being in communication with a second inflation tube, the second inflation tube being fixedly connected to the external tube, the inflation tube being provided with a flow blocking unit for blocking gastric fluid reflux; The flow blocking unit includes first convex rings distributed at intervals, the first convex rings distributed at intervals are connected to the inflation cylinder, and the inflation cylinder is connected to second convex rings distributed at intervals, the first convex rings and the second convex rings distributed at intervals are both elastic air bags, and the first convex rings distributed at intervals and the second convex rings distributed at intervals are staggered, and the guide tube is provided with an anti-blocking mechanism for preventing gastric reflux from blocking the flow channel.

[0006] Preferably, the first convex ring and the second convex ring are both annular structures that bend gradually from the outside to the inside, and both are provided with anti-bending parts at the inner bends, and the hardness of the anti-bending parts is greater than that of other parts.

[0007] Preferably, the anti-blocking mechanism includes a sleeve, which is fixed in the guide tube, and the guide tube is slidably connected to a first connecting rope, and the first connecting rope is fixed to a tightening member, and the tightening member consists of a rope and a ring, the tail end of the rope is connected to the ring part, and the head end of the rope passes through the ring part, the tightening member is located between the guide tube and the sleeve, and the tightening member is fixed to an elastic rope, and the elastic rope is fixed to the sleeve.

[0008] Preferably, a blocking ball is rotatably connected to a portion of the rope portion of the tightening member near the tail end, and the blocking ball is larger than the annular portion of the tightening member.

[0009] Preferably, the flow guide tube is fixedly connected to an anti-backflow sleeve, and the flow area of ​​the anti-backflow sleeve gradually decreases from a side close to the flow guide tube to a side away from the flow guide tube.

[0010] Preferably, a intercepting groove is provided in the anti-backflow sleeve.

[0011] Preferably, a recovery mechanism for facilitating the removal of the entire body is further included, the recovery mechanism being arranged on the cuff, the recovery mechanism including a locking rope, the locking rope being fixed to the cuff, the locking rope being slidably connected to the support shell, the locking rope being fixed to a second connecting rope, the second connecting rope being fixed to an intercepting block, the intercepting block being located in the guide tube, the intercepting block being in contact with the sleeve, the guide tube being provided with a hole for the locking rope and the second connecting rope to move, the tightening member being fixed to a force component rope, the force component rope being slidably connected to the guide tube.

[0012] Preferably, the connection points between the first connecting rope and the force component rope and the tightening member are respectively located on both sides of the circular portion of the tightening member.

[0013] Preferably, a stabilizing groove is provided on the intercepting block to provide space for the tightening member.

[0014] Preferably, the external cylinder is fixedly connected with a suction tube, and the suction tube is connected with an intercepting tube.

[0015] Compared with the prior art, the present invention has the following advantages: the present invention forms several annular cavities with opposite volume changes in cooperation with the patient's esophagus through the shape design and staggered arrangement of the first convex ring and the second convex ring. When the first convex ring and the second convex ring are squeezed by the reflux gastric fluid, the directions of the reaction forces provided by the adjacent annular cavities after being compressed are different. The reaction forces in different directions can effectively disperse the external force, reduce the deformation of the first convex ring and the second convex ring, and thus reduce the probability of sealing failure. Through the shape setting of the anti-reflux sleeve and the intercepting groove thereon, if the gastric fluid in the sleeve has a tendency to reflux into the esophagus, the flow area of ​​the anti-reflux sleeve gradually decreases. The liquid film is forced to move to a narrower path, which increases the flow resistance and reduces the probability of failure of the anti-reflux cuff due to the impact of gastric fluid in the sleeve; the first connecting rope and the tightening member actively discharge part of the gastric fluid remaining in the sleeve after the patient vomits, thereby reducing the probability of solid matter in the sleeve accumulating in the sleeve and causing sleeve blockage affecting the subsequent discharge of gastric fluid; the locking rope is pulled to move by the second connecting rope, and the locking rope drives the cuff to squeeze the support shell, thereby deforming the support shell (even if the support shell shrinks inward), making it easier to remove the glottis mask, while reducing the patient's discomfort when removing the glottis mask and reducing the probability of the patient's teeth scratching the glottis mask. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the internal structure of the external cylinder of the present invention; Figure 3 This is a sectional view of the three-dimensional structure of the external cylinder and the airway tube of the present invention; Figure 4 This is a sectional view of the three-dimensional structure of the support shell and the cuff of the present invention; Figure 5 It is a sectional view of the three-dimensional structure of the guide tube and the inflation cylinder of the present invention; Figure 6 It is a bottom view of the three-dimensional structure of the first connecting rope and the tightening member of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the cuff and locking rope of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the tightening member and the elastic rope of the present invention; Figure 9 It is a schematic diagram of the three-dimensional structure of the suction tube and the intercepting tube of the present invention.

[0017] Figure numerals: 1. external tube, 2. air guide tube, 3. support shell, 4. cuff, 5. first inflation tube, 6. flow guide tube, 7. inflation tube, 701. first convex ring, 702. second convex ring, 703. anti-bending part, 8. second inflation tube, 9. sleeve, 10. first connecting rope, 11. tightening piece, 12. elastic rope, 13. anti-reflux sleeve, 14. intercepting groove, 15. locking rope, 16. second connecting rope, 17. intercepting block, 18. force distribution rope, 19. stabilizing groove, 20. suction tube, 21. intercepting tube. DETAILED DESCRIPTION

[0018] First of all, it should be noted that in the various embodiments described, identical components are provided with identical reference numerals or identical component names, wherein the disclosure contained throughout the entire description can be transferred to the same components having the same reference numerals or identical component names. Positional designations selected in the description, such as top, bottom, lateral, etc., also refer to the directly described and illustrated figures and are transferred to the new position in the event of a change in position.

[0019] Example 1

[0020] This embodiment discloses a portable multi-channel glottic mask, which is used to enhance the sealing between the laryngeal mask (glottic mask) and the esophagus when in use, thereby reducing the probability of airway reflux.

[0021] like Figures 1-6As shown, the glottis mask includes an external tube 1, the external tube 1 is fixed with an airway tube 2, the airway tube 2 is fixed and connected with a support shell 3, a cuff 4 is fixed on the support shell 3, the right side of the airway tube 2 is connected with the external air supply system, the cuff 4 is connected with a first inflation tube 5, the cuff 4 is in a contracted state when not in use, and when in use, the glottis mask is first placed in a designated position (the patient's throat), and then the cuff 4 is inflated through the first inflation tube 5 to expand the cuff 4, thereby sealing the trachea (that is, the cuff is inflated after entering the mouth in a contracted state, which reduces the patient's discomfort and facilitates installation). The first inflation tube 5 is fixedly connected to the external tube 1, and the external tube 1 is fixedly connected to a guide tube 6, which is fixedly connected to the support shell 3. The left part of the guide tube 6 is fixedly connected to an inflation tube 7, which is connected to the second inflation tube 8. The inflation tube 7 is in a contracted state when not in use, just like the cuff 4. When in use, the inflation tube 7 is inflated through the second inflation tube 8, thereby expanding the inflation tube 7 and blocking the esophagus, reducing the probability of gastric fluid overflow causing the sealing failure of the cuff 4. The second inflation tube 8 is fixedly connected to the external tube 1, and the inflation tube 7 is provided with a flow blocking unit for preventing gastric fluid reflux;The flow-blocking unit includes a first convex ring 701 with a spacing distribution, and the first convex ring 701 with a spacing distribution is connected to the inflatable cylinder 7, and the inflatable cylinder 7 is connected to the second convex ring 702 with a spacing distribution. The thickness of the first convex ring 701 and the second convex ring 702 gradually decreases from the inside to the outside. The first convex ring 701 and the second convex ring 702 are elastic airbags and the adjacent first convex rings 701 and the second convex rings 702 are symmetrically distributed on the left and right. The first convex ring 701 and the second convex ring 702 are both softly connected to the inflatable cylinder 7, and the spacing distribution is The first convex ring 701 and the second convex ring 702 are staggered. Both the first convex ring 701 and the second convex ring 702 are annular structures that gradually bend from the outside to the inside, and both are provided with anti-bending parts 703 at the inner bends. The hardness of the anti-bending parts 703 is greater than that of the other parts. Taking the first second convex ring 702 on the left as an example, the second convex ring 702 has the first convex ring 701 on both sides. The volume of the annular cavity formed between the second convex ring 702 and the first convex ring 701 on the left gradually decreases from the inside to the outside. 2 and the right first protruding ring 701, the volume of the annular cavity gradually decreases from the outside to the inside. When the first and second protruding rings 701, 702 are squeezed by refluxed gastric fluid (hereinafter referred to as the external force), (for example, when the leftmost first protruding ring 701 tends to move rightward due to the external force, the anti-bending portion 703 has a strong bending resistance and, when under pressure, first swings rightward, thereby gradually reducing the volume of the annular cavity between the left first protruding ring 701 and the adjacent second protruding ring 702). The reaction forces provided by the two different annular cavities after being compressed are in different directions. The reaction forces in different directions can effectively disperse the external force and reduce the deformation of the first and second protruding rings 701, 702. When the external force squeezes the annular cavity, the gradient of the annular cavity volume change forces the structure to generate nonlinear deformation resistance. This asymmetric volume change can increase local stiffness, similar to the mechanical properties of a bellows or honeycomb structure, thereby suppressing displacement and reducing the probability of sealing failure. The flow guide tube 6 is provided with an anti-blocking mechanism to prevent gastric reflux from blocking the flow channel.

[0022] like Figure 2-Figure 6As shown, the anti-blocking mechanism includes a sleeve 9, which is made of elastic material and can automatically reset when not under pressure. A silicone one-way valve is provided in the sleeve 9. The sleeve 9 is fixed in the guide tube 6. The guide tube 6 is slidably connected to a first connecting rope 10. The tightening member 11 consists of a rope and a ring. The tail end of the rope is connected to the ring part, the head end of the rope passes through the ring part, and a blocking block is provided on the part of the rope near the tail end. The blocking ball is larger than the ring part of the tightening member 11 and is used to limit the minimum shrinkage of the tightening member 11. In a small range, the blocking balls on the annular portion of the tightening member 11 and the rope portion of the tightening member 11 are respectively located on the upper and lower sides of the sleeve 9. When the blocking balls on the tightening member 11 contact the annular portion of the tightening member 11, the head end of the rope portion is fixedly connected to the first connecting rope 10, and its annular portion is located on the lower side of the guide tube 6. The tightening member 11 is located between the guide tube 6 and the sleeve 9. The annular portion of the tightening member 11 is fixedly connected with an elastic rope 12. The elastic rope 12 is a spiral elastic rope and can be elastically retracted. The elastic rope 12 is used to ensure that the tightening member The annular portion 11 is always on the lower side of the guide tube 6, driving the tightening member 11 to reset, the elastic rope 12 is fixed to the sleeve 9, and the guide tube 6 is fixed with an anti-reflux sleeve 13. The flow area of ​​the anti-reflux sleeve 13 gradually decreases from the side close to the guide tube 6 to the side away from the guide tube 6. The anti-reflux sleeve 13 is "quasi-truncated cone" as a whole, and the side with a larger diameter is located on the side close to the guide tube 6. The flow area of ​​the anti-reflux sleeve 13 gradually decreases from right to left. If the gastric fluid in the sleeve 9 has a tendency to reflux into the esophagus, The anti-reflux sleeve 13 forces the gastric fluid to move toward a narrower path, thereby increasing the flow resistance, and simultaneously utilizing the surface tension of the gastric fluid entering the anti-reflux sleeve 13 to simultaneously provide flow resistance for the gastric fluid in the sleeve 9. A diversion groove 14 is provided in the anti-reflux sleeve 13. When the gastric fluid flows out of the sleeve 9, the diversion groove 14 first changes the flow direction of the gastric fluid, thereby causing the peripheral gastric fluid to impact the central gastric fluid, reducing the impact force of the gastric fluid on the anti-reflux sleeve 13, that is, reducing the probability of the anti-reflux sleeve 13 failing due to the impact of the gastric fluid in the sleeve 9.

[0023] The working process of the glottic mask in this embodiment is as follows: The glottic mask is disinfected as a whole, and then placed in the oral cavity, with the support shell 3 and the cuff 4 located in the patient's throat, and the inflation tube 7 located in the patient's esophagus. Then, air is injected into the cuff 4 and the inflation tube 7 through the first inflation tube 5 and the second inflation tube 8 respectively, so that the cuff 4 gradually expands. The expansion of the cuff 4 completes the sealing of the airway, and the inflation tube 7 injects air into the first convex ring 701 and the second convex ring 702 so that the two expand to complete the sealing of the esophagus, and the extrusion force between the cuff 4 and the inflation tube 7 and the human body is controlled within an appropriate range. Then, the airway 2 is connected to the external air supply system, and the sleeve 9 is connected to the external storage bag, and then the operation can be performed. After the operation is completed, the cuff 4 and the inflation tube 7 are deflated and the device is removed from the patient's throat.

[0024] If gastric reflux occurs during the operation, the gastric fluid is pressurized and overflows upward through the anti-reflux sleeve 13 and the sleeve 9 into the external storage bag until the gastric reflux ends. In order to prevent the solid matter in the sleeve 9 from accumulating in the sleeve 9 and causing the sleeve 9 to be blocked and affecting the subsequent gastric fluid discharge, the first connecting rope 10 is pulled. The first connecting rope 10 drives the head end of the tightening member 11 to move to the right, and the distance between the head end and the tail end of the tightening member 11 increases (that is, the ring formed by the tightening member 11 shrinks), thereby squeezing the sleeve 9 and reducing its flow area. As the connecting rope 10 continues to be pulled, the tightening member 11 is locked to the extreme The sleeve 9 is limited and gradually moves to the right, while stretching the elastic rope 12, thereby squeezing out the gastric juice, i.e., solid matter, retained in the sleeve 9, and reducing the probability that the solid matter in the sleeve 9 accumulates in the sleeve 9, causing the sleeve 9 to be blocked and affecting the subsequent discharge of gastric juice. The tail end of the tightening member 11 is always located at the lower side of the sleeve 9. Even if some residue remains, it will only accumulate at the lower side of the sleeve 9 and will not affect the flow state of the sleeve 9. When the tightening member 11 moves to the right end of the sleeve 9, the first connecting rope 10 is loosened, and the sleeve 9 squeezes the tightening member 11 to restore the shape of the tightening member 11, and the elastic rope 12 drives the tightening member 11 to reset its position.

[0025] Example 2

[0026] This embodiment discloses a portable multi-channel glottic mask, which is further improved on the basis of the first embodiment.

[0027] The structure, connection relationship and working process of the detection device in Example 1 will not be described in detail. The focus will be on the working principle of the following structure, and the same applies to subsequent embodiments.

[0028] like Figure 4-Figure 9The cam 15 is connected to the support frame 3 at the front and rear ends of the support frame 3, and the cam 15 is connected to the support frame 3 at the back. The connection points of the rope 18 and the tightening member 11 are respectively located on both sides of the circular ring part of the tightening member 11, so that when the first connecting rope 10 and the force-dividing rope 18 pull the tightening member 11 together, the tightening member 11 is subjected to balanced force and will not be tightened. If the tightening member 11 is not tightened, the intercepting block 17 is located in the moving path of the tightening member 11, and a stabilizing groove 19 is provided on the intercepting block 17. The lower left part of the intercepting block 17 is provided with an inclined surface for guiding the tightening member 11, and the tightening member 11 is guided into the stabilizing groove 19 by the inclined surface on the intercepting block 17. The stabilizing groove 19 is used to provide space for the tightening member 11 to improve the stability of the connection between the intercepting block 17 and the tightening member 11, and reduce the possibility of losing connection between the intercepting block 17 and the tightening member 11 during the driving process. The external tube 1 is fixed with a suction tube 20, and the suction tube 20 is connected to the intercepting tube 21. The right side and lower side of the intercepting tube 21 are provided with evenly distributed through holes for sucking the patient's saliva when the laryngeal mask is in use.

[0029] The working process of the glottic mask in this embodiment is as follows: After the glottic mask is used up (i.e. when the glottic mask needs to be removed), the gas in the cuff 4, the inflator 7, the first convex ring 701 and the second convex ring 702 is released, and the first connecting rope 10 and the force-dividing rope 18 are pulled together. The tightening member 11 will not be tightened under the influence of the symmetrical tension, so that the first connecting rope 10 and the force-dividing rope 18 jointly drive the tightening member 11 to move to the right, and at the same time stretch the elastic rope 12. In this process, the tightening member 11 contacts the intercepting block 17 and drives the intercepting block 17 to move to the right together. The intercepting block 17 is under the influence of the tightening member 11. During the pulling process, it gradually swings, so that the tightening part 11 is embedded in the stabilizing groove 19. In the process of the intercepting block 17 moving to the right, the intercepting block 17 pulls the locking rope 15 downward through the second connecting rope 16, and the two ends of the locking rope 15 move toward the middle of the support shell 3 synchronously, driving the cuff 4 to squeeze the support shell 3, thereby deforming the support shell 3 (even if the support shell shrinks inward), and then the device is taken out uniformly, which makes it convenient to take out the glottic mask, while reducing the patient's discomfort when taking out the glottic mask and reducing the probability of the patient's teeth scratching the glottic mask.

[0030] When the glottic mask is placed in the patient's body, the intercepting tube 21 is attached to the patient's throat, and the suction tube 20 is connected to the external suction device. The saliva secreted by the patient is sucked through the suction tube 20 and the intercepting tube 21 from time to time to reduce the probability of saliva causing problems with the glottic mask sealing.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A portable multi-channel glottic mask, characterized in that it includes An external tube (1) is provided, wherein the external tube (1) is fixedly connected to an air guide tube (2), the air guide tube (2) is fixedly connected to and communicated with a support shell (3), the support shell (3) is fixedly connected to a cuff (4), the cuff (4) is communicated with a first inflation tube (5), the first inflation tube (5) is fixedly connected to the external tube (1), the external tube (1) is fixedly connected to a flow guide tube (6), the flow guide tube (6) is fixedly connected to the support shell (3), the flow guide tube (6) is fixedly connected to an inflation tube (7), the inflation tube (7) is communicated with a second inflation tube (8), the second inflation tube (8) is fixedly connected to the external tube (1), and the inflation tube (7) is provided with a flow blocking unit for blocking gastric fluid reflux; The flow-blocking unit comprises first convex rings (701) distributed at intervals, the first convex rings (701) distributed at intervals are connected to the inflation cylinder (7), and the inflation cylinder (7) is connected to second convex rings (702) distributed at intervals, the first convex rings (701) and the second convex rings (702) are both elastic air bags, the first convex rings (701) and the second convex rings (702) distributed at intervals are staggered, and the flow guide tube (6) is provided with an anti-blocking mechanism for preventing gastric reflux from blocking the flow channel.

2. A portable multi-channel glottic mask according to claim 1, characterized in that: The first convex ring (701) and the second convex ring (702) are both annular structures that gradually bend from the outside to the inside, and both are provided with anti-bending parts (703) at the inner bends, and the hardness of the anti-bending parts (703) is greater than that of other parts.

3. A portable multi-channel glottic mask according to claim 1, characterized in that: The anti-blocking mechanism includes a sleeve (9), the sleeve (9) is fixed in the guide tube (6), the guide tube (6) is slidably connected to a first connecting rope (10), the first connecting rope (10) is fixed to a tightening member (11), the tightening member (11) is composed of a rope and a ring, the tail end of the rope is connected to the ring, and the head end of the rope passes through the ring. The tightening member (11) is located between the guide tube (6) and the sleeve (9), the tightening member (11) is fixed to an elastic rope (12), and the elastic rope (12) is fixed to the sleeve (9).

4. A portable multi-channel glottic mask according to claim 3, characterized in that: A blocking ball is rotatably connected to a portion of the rope portion of the tightening member (11) near the tail end, and the blocking ball is larger than the annular portion of the tightening member (11).

5. A portable multi-channel glottic mask according to claim 3, characterized in that: The flow guide tube (6) is fixedly connected to an anti-backflow sleeve (13), and the flow area of ​​the anti-backflow sleeve (13) gradually decreases from a side close to the flow guide tube (6) to a side away from the flow guide tube (6).

6. A portable multi-channel glottic mask according to claim 5, characterized in that: A intercepting groove (14) is provided in the anti-backflow sleeve (13).

7. A portable multi-channel glottic mask according to claim 3, characterized in that: The invention also includes a recovery mechanism for facilitating the removal of the entire device. The recovery mechanism is arranged on the cuff (4). The recovery mechanism includes a locking rope (15). The locking rope (15) is fixed to the cuff (4). The locking rope (15) is slidably connected to the support shell (3). The locking rope (15) is fixed to a second connecting rope (16). The second connecting rope (16) is fixed to an interception block (17). The interception block (17) is located in the guide tube (6). The interception block (17) contacts the sleeve (9). The guide tube (6) is provided with a hole for the locking rope (15) and the second connecting rope (16) to move. The tightening member (11) is fixed to a force component rope (18). The force component rope (18) is slidably connected to the guide tube (6).

8. A portable multi-channel glottic mask according to claim 7, characterized in that: The connection points between the first connecting rope (10) and the force component rope (18) and the tightening member (11) are respectively located on both sides of the circular ring portion of the tightening member (11).

9. A portable multi-channel glottic mask according to claim 8, characterized in that: The intercepting block (17) is provided with a stabilizing groove (19) for providing space for the tightening member (11).

10. A portable multi-channel glottic mask according to claim 1, characterized in that: The external cylinder (1) is fixedly connected to a suction tube (20), and the suction tube (20) is connected to an interception tube (21).

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