Novel laryngeal mask ventilation device

Abstract

The invention relates to the technical field of medical instruments, and particularly discloses a novel laryngeal mask ventilation device which comprises a connecting catheter and a laryngeal mask air bag, an inflation mechanism is arranged at the upper end of the laryngeal mask air bag, a catheter through hole is formed in the inner side of the laryngeal mask air bag, and the laryngeal mask air bag is communicated with the lower end of the connecting catheter through the catheter through hole. A double-connector base is fixedly installed at the upper end of the connecting guide pipe, and an anti-bite mechanism is arranged on the outer side of the connecting guide pipe. According to the anti-bite laryngeal mask, after the laryngeal mask air bag at the lower end of the connecting catheter is installed, the anti-bite sleeve can be adjusted to the position, corresponding to the connecting catheter, of the gum until the anti-bite sleeve is limited by a limiting block on the anti-bite sleeve, and then the anti-bite sleeve is limited and fixed through an adjusting mechanism on an adjusting sleeve at the upper end of the anti-bite sleeve; at the moment, the teeth of the patient are placed in the tooth socket with the silica gel pad, so that the anti-bite sleeve can effectively perform anti-bite protection on the connecting catheter.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, in particular to a novel laryngeal mask ventilation device. Background Art

[0002] Assisted breathing and ventilation is a necessary means to provide assisted breathing to surgical patients during general anesthesia surgery in order to maintain the patient's hemodynamic stability under general anesthesia. Laryngeal mask ventilation is a common method of assisted breathing and ventilation, and the laryngeal mask is a necessary device in laryngeal mask ventilation. As an effective means of airway management, the laryngeal mask can establish a safe airway during general anesthesia surgery and has been widely used in clinical practice.

[0003] At present, the ventilation laryngeal masks in the existing technologies on the market still have some shortcomings in actual use. For example, the structure and function of the traditional laryngeal mask ventilation catheter are relatively simple. During installation, the laryngeal mask needs to be inserted to the bottom along the lower wall of the patient's throat, and then the ventilation tube is extended from the mouth. The medical staff then connects its interface to the ventilator to help the patient breathe. However, during use, first, after the laryngeal mask is installed and inflated, the medical staff needs to inflate the air bag of the laryngeal mask through a handheld inflation device, and then observe whether the patient's oxygen and carbon dioxide intake and discharge are normal. This often takes a long time and affects the efficiency of use. Secondly, the patient's teeth can easily damage the ventilation tube and the air bag inflation tube, which may also pose a potential danger to the patient's life to a certain extent. Summary of the invention

[0004] The object of the present invention is to provide a novel laryngeal mask ventilation device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides a novel laryngeal mask ventilation device, comprising a connecting catheter and a laryngeal mask airbag, wherein an inflation mechanism is arranged at the upper end of the laryngeal mask airbag, a catheter through hole is opened at the inner side of the laryngeal mask airbag, the laryngeal mask airbag is connected to each other through the catheter through hole and the lower end of the connecting catheter, a double-interface seat is fixedly installed at the upper end of the connecting catheter, an anti-bite mechanism is arranged at the outer side of the connecting catheter, the anti-bite mechanism comprises an adjustment sleeve and an anti-bite sleeve which slide on the outer side of the connecting catheter, a reinforcement mechanism is symmetrically arranged at the outer side of the anti-bite sleeve, a limiting mechanism is arranged at the outer side of the adjustment sleeve, the anti-bite sleeve is movably installed through the connecting mechanism and the adjustment sleeve, and a hard steel ring is arranged at the inner wall of the tube body of the connecting catheter;

[0006] The reinforcement mechanism includes an extension belt, which is symmetrically fixedly connected to the outside of the anti-bite sleeve, and one end of the extension belt away from the anti-bite sleeve is fixedly connected to a connecting belt, and one end of the connecting belt away from the extension belt is fixedly connected to an elastic belt. The anti-bite mechanism can be further fixed by the reinforcement mechanism;

[0007] The connecting mechanism includes a base and a fixing bolt, the base is symmetrically fixedly connected to the upper end of the anti-bite sleeve, the side of the base away from the anti-bite sleeve is fixedly connected with a connecting column, the end of the connecting column away from the base is fixedly connected with a first screw sleeve, the lower end of the first screw sleeve is plugged with the lower end of the adjusting sleeve, the upper end of the first screw sleeve penetrates the adjusting sleeve and the fixing bolt for threaded installation, and the adjusting sleeve and the anti-bite sleeve can be conveniently connected through the connecting mechanism;

[0008] The limiting mechanism includes a groove, which is opened on the inner side of the adjusting sleeve, and a push plate is slidably connected to the inner side of the groove. A stud is threadedly connected to the inner side of the adjusting sleeve, one end of the stud is fixedly connected to a knob block, and one end of the stud away from the knob block is threadedly extended into the inner side of the groove and is rotatably connected to the push plate. A resist block is fixedly connected to the side of the push plate away from the stud, and the side of the resist block away from the push plate abuts against the outer wall of the connecting conduit. Through the limiting mechanism, the anti-bite sleeve can be conveniently adjusted and fixed through the adjusting sleeve.

[0009] The inflation mechanism includes an airbag catheter, the lower end of the airbag catheter is fixedly connected to the laryngeal mask airbag, the inner wall of the airbag catheter is fixedly connected with a connecting wire, the lower end of the connecting wire is fixedly connected with an air pressure sensor, and the air pressure sensor is arranged on the inner side of the laryngeal mask airbag, the upper end of the connecting wire is fixedly connected with a control module, the lower end of the control module is fixedly installed with a micro-inflating and deflation pump, the charging and deflation air pipe of the micro-inflating and deflation pump is fixedly connected to the upper end of the airbag catheter, and the laryngeal mask airbag can be conveniently inflated through the inflation mechanism.

[0010] In a further embodiment, a tooth socket is opened at the lower end of the anti-bite sleeve, and the outer wall of the lower end of the anti-bite sleeve extends to the inner side of the tooth socket and is fixedly connected with a silicone pad, and the outer side of the anti-bite sleeve is symmetrically fixedly connected with a limiting block.

[0011] In a further embodiment, the base is shaped like a truncated cone, and a limiting ring is fixedly connected to the outer side of the lower end of the first screw sleeve. The lower end of the first screw sleeve is plug-in connected with the lower end of the adjusting sleeve through the limiting ring. The limiting ring can conveniently limit the lower end of the first screw sleeve at the lower end of the adjusting sleeve.

[0012] In a further embodiment, sliding grooves are symmetrically provided on the inner side of the groove, a sliding block is fixedly connected to the end of the push plate, the sliding block and the sliding groove are slidingly connected, a rubber sheet is bonded to the side of the block away from the push plate, a plurality of diamond grooves are provided on the outer side of the rubber sheet, a second screw sleeve is fixedly installed on the inner side of the adjustment sleeve, one end of the stud threadedly penetrates the second screw sleeve, the sliding block and the sliding groove can facilitate the sliding of the push plate on the inner side of the groove, and the friction force of the abutting part of the block can be improved by the rubber sheet.

[0013] In a further embodiment, a second guide groove is provided on the outer side of the connecting catheter, the outer wall of the airbag catheter is bonded to the inner side of the second guide groove, the inner walls of the anti-bite sleeve and the adjustment sleeve are both provided with a first guide groove, and the side of the airbag catheter away from the second guide groove is movably connected to the inner side of the first guide groove, and the airbag catheter can be conveniently protected by the second guide groove and the first guide groove.

[0014] In a further embodiment, an air guide cavity and a flow guide cavity are respectively provided on the inner side of the connecting conduit, the lower ends of the air guide cavity and the flow guide cavity are interconnected with the conduit through hole, and the upper end of the double-interface seat is respectively threadedly connected with a flow guide interface cover and an air guide joint, and through the flow guide cavity and the air guide cavity, it can be conveniently connected to the double-interface seat for use.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] First, in the present invention, after the laryngeal mask airbag at the lower end of the connecting catheter is installed, the anti-bite sleeve can be adjusted to the position of the corresponding connecting catheter on the gums until it is limited by the limit block on the anti-bite sleeve, and then the adjustment mechanism on the upper end adjustment sleeve of the anti-bite sleeve can be used to limit and fix it. At this time, the patient's teeth are placed in the tooth socket with the silicone pad, so that the anti-bite sleeve can effectively protect the connecting catheter from biting;

[0017] Secondly, in the present invention, on the basis of fixing the anti-bite sleeve, the loop elastic band connected by the connecting bands at the extension bands on both sides of the anti-bite sleeve can be put on the patient's ear to further limit and fix the anti-bite sleeve, and at the same time, the stability of the connecting catheter can be guaranteed;

[0018] Thirdly, in the present invention, when assembling the adjusting sleeve and the anti-bite sleeve, the lower end of the first screw sleeve connected to the connecting column on the anti-bite sleeve is plugged in the lower hole wall of the connecting hole on the adjusting sleeve, and then the fixing bolt is inserted from the upper end of the adjusting sleeve and connected and fastened with the first screw sleeve, so that the adjusting sleeve and the anti-bite sleeve can be conveniently assembled and connected;

[0019] Fourthly, in the present invention, when the anti-bite sleeve is adjusted to an appropriate position, the stud is rotated by the knob block, so that the stud is threaded and extended on the adjusting sleeve, and the rotation of the stud pushes the push plate to slide, and at the same time, the push plate is connected to the abutment block with a rubber layer to abut against the connecting guide tube, so that the anti-bite sleeve at the lower end of the adjusting sleeve can be adjusted and fixed conveniently;

[0020] Fifth, in the present invention, the operation of the micro-inflating and deflation air pump is controlled by the control module, so that the micro-inflating and deflation air pump can automatically inflate the laryngeal mask airbag through the airbag catheter. During the process of inflating the laryngeal mask airbag, the air pressure sensor in the laryngeal mask airbag can monitor the pressure in the laryngeal mask airbag. When the pressure of the laryngeal mask airbag reaches a suitable value, the air inlet pipeline automatic valve assembly on the micro-inflating and deflation air pump is closed, thereby greatly reducing the installation and adjustment time of the laryngeal mask airbag.

[0021] Sixth, in the present invention, the middle of the connecting catheter is divided into two parts to form an air guide cavity and a flow guide cavity, and the upper end of the air guide cavity can be connected to the ventilator through the air guide connector at the double interface seat. When the patient has gastric reflux, the flow guide interface cover can be removed, and the drainage pipe can be inserted into the patient's body to help the patient clean it in time to avoid danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the inflation mechanism in the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0026] Figure 5 This is an exploded view of the anti-bite mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the inner structure of the groove in the present invention;

[0028] Figure 7 It is a schematic diagram of the steel ring structure in the present invention;

[0029] Figure 8 It is a schematic diagram of the connection between the flow guide interface cover, the air guide joint and the double interface seat in the present invention.

[0030] In the figure: 1. connecting catheter; 2. laryngeal mask airbag; 3. catheter through hole; 4. inflation mechanism; 401. airbag catheter; 402. control module; 403. micro inflation and deflation pump; 404. air pressure sensor; 405. connecting wire; 5. anti-bite mechanism; 501. anti-bite sleeve; 502. tooth socket; 503. silicone pad; 504. limit block; 505. adjustment sleeve; 6. reinforcement mechanism; 601. extension belt; 602. connecting belt; 603. elastic belt; 7. connecting mechanism; 701. base; 702, connecting column; 703, first screw sleeve; 704, fixing bolt; 8, double interface seat; 9, limiting mechanism; 901, groove; 902, stud; 903, knob block; 904, push plate; 905, stop block; 10, first guide groove; 11, rubber sheet; 12, second screw sleeve; 13, limiting ring; 14, sliding block; 15, diamond groove; 16, sliding groove; 17, air guide cavity; 18, second guide groove; 19, steel ring; 20, flow guide cavity; 21, flow guide interface cover; 22, air guide joint. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-Figure 8 In an embodiment of the present invention, a novel laryngeal mask ventilation device comprises a connecting catheter 1 and a laryngeal mask airbag 2, an inflation mechanism 4 is provided at the upper end of the laryngeal mask airbag 2, a catheter through hole 3 is provided on the inner side of the laryngeal mask airbag 2, the laryngeal mask airbag 2 is connected to the lower end of the connecting catheter 1 through the catheter through hole 3, a double-interface seat 8 is fixedly installed on the upper end of the connecting catheter 1, an anti-bite mechanism 5 is provided on the outer side of the connecting catheter 1, the anti-bite mechanism 5 comprises an adjusting sleeve 505 and an anti-bite sleeve 501 sliding on the outer side of the connecting catheter 1, a reinforcing mechanism 6 is symmetrically provided on the outer side of the anti-bite sleeve 501, a limiting mechanism 9 is provided on the outer side of the adjusting sleeve 505, the anti-bite sleeve 501 is movably installed through the connecting mechanism 7 and the adjusting sleeve 505, a hard steel ring 19 is provided on the inner wall of the tube body of the connecting catheter 1, and a circle of hard steel rings 19 at one end are added inside the inner wall of the connecting catheter 1, so that the connecting catheter 1 can have both bending and strength.

[0033] The inflation mechanism 4 includes an airbag catheter 401, the lower end of the airbag catheter 401 is fixedly connected to the laryngeal mask airbag 2, the inner wall of the airbag catheter 401 is fixedly connected with a connecting wire 405, the lower end of the connecting wire 405 is fixedly connected with an air pressure sensor 404, the air pressure sensor 404 is arranged on the inner side of the laryngeal mask airbag 2, the upper end of the connecting wire 405 is fixedly connected with a control module 402, the lower end of the control module 402 is fixedly installed with a micro-inflating and deflating air pump 403, the inflation and deflating air pipe of the micro-inflating and deflating air pump 403 is fixedly connected to the upper end of the airbag catheter 401, and the air pressure sensor 404 is arranged on the inner side of the laryngeal mask airbag 2, the upper end of the connecting wire 405 is fixedly connected with a control module 402, and the lower end of the control module 402 is fixedly installed with a micro-inflating and deflating air pump 403. The inflation and deflating air pipe of the micro-inflating and deflating air pump 403 is fixedly connected to the upper end of the airbag catheter 401, and the inflation and deflating air pipe of the micro-inflating and deflating air pump 403 is fixedly connected to the upper end of the airbag catheter 401. 402 controls the operation of the micro-inflating and deflation pump 403, so that the micro-inflating and deflation pump 403 can automatically inflate the laryngeal mask airbag 2 through the airbag catheter 401. During the process of inflating the laryngeal mask airbag 2, the air pressure sensor 404 in the laryngeal mask airbag 2 can monitor the pressure in the laryngeal mask airbag 2. When the pressure of the laryngeal mask airbag 2 reaches a suitable value, the air inlet pipeline automatic valve assembly on the micro-inflating and deflation pump 403 is closed, thereby greatly reducing the installation and adjustment time of the laryngeal mask airbag 2; the control module 402 is electrically connected to the micro-inflating and deflation pump 403 through a wire;

[0034] A tooth socket 502 is provided at the lower end of the anti-bite sleeve 501, and a silicone pad 503 is fixedly connected to the inner side of the tooth socket 502 on the outer wall of the lower end of the anti-bite sleeve 501, and a limiting block 504 is symmetrically fixedly connected to the outer side of the anti-bite sleeve 501. After the laryngeal mask airbag 2 at the lower end of the connecting catheter 1 is installed, the anti-bite sleeve 501 can be adjusted to the position of the corresponding connecting catheter 1 on the gums until it is limited by the limiting block 504 on the anti-bite sleeve 501, and then the adjusting mechanism on the adjusting sleeve 505 at the upper end of the anti-bite sleeve 501 can be used to limit and fix it. At this time, the patient's teeth are placed in the tooth socket 502 with the silicone pad 503, so that the anti-bite sleeve 501 can effectively protect the connecting catheter 1 from biting;

[0035] The reinforcement mechanism 6 includes an extension belt 601, which is symmetrically fixedly connected to the outside of the anti-bite sleeve 501, and one end of the extension belt 601 away from the anti-bite sleeve 501 is fixedly connected to a connecting belt 602, and one end of the connecting belt 602 away from the extension belt 601 is fixedly connected to an elastic belt 603. On the basis of fixing the anti-bite sleeve 501, the loop elastic belt 603 connected to the connecting belt 602 at the extension belts 601 on both sides of the anti-bite sleeve 501 can be put on the patient's ear to further limit and fix the anti-bite sleeve 501, and at the same time, the stability of the connecting catheter 1 can be guaranteed;

[0036] The connecting mechanism 7 includes a base 701 and a fixing bolt 704, the base 701 is symmetrically fixedly connected to the upper end of the anti-bite sleeve 501, a connecting column 702 is fixedly connected to the side of the base 701 away from the anti-bite sleeve 501, and a first screw sleeve 703 is fixedly connected to the end of the connecting column 702 away from the base 701, the lower end of the first screw sleeve 703 is plugged with the lower end of the adjusting sleeve 505, and the upper end of the first screw sleeve 703 penetrates the adjusting sleeve 505 and the fixing bolt 704 for threaded installation. When assembling the adjusting sleeve 505 and the anti-bite sleeve 501, the lower hole wall of the connecting hole on the adjusting sleeve 505 is plugged with the lower end of the first screw sleeve 703 connected to the connecting column 702 on the anti-bite sleeve 501, and then the fixing bolt 704 is inserted from the upper end of the adjusting sleeve 505 and connected and fastened with the first screw sleeve 703, so that the adjusting sleeve 505 and the anti-bite sleeve 501 can be conveniently assembled and connected;

[0037] The limiting mechanism 9 includes a groove 901, which is provided on the inner side of the adjusting sleeve 505, and a push plate 904 is slidably connected to the inner side of the groove 901. A stud 902 is threadedly connected to the inner side of the adjusting sleeve 505, and one end of the stud 902 is fixedly connected to a knob block 903. One end of the stud 902 away from the knob block 903 is threadedly extended into the inner side of the groove 901 and is rotatably connected to the push plate 904. A side of the push plate 904 away from the stud 902 is fixedly connected to a stop block 905. The side away from the push plate 904 abuts against the outer wall of the connecting conduit 1. When the anti-bite sleeve 501 is adjusted to an appropriate position, the stud 902 is rotated by the knob block 903, so that the stud 902 is threadedly extended and retracted on the adjusting sleeve 505, and the rotation of the stud 902 pushes the push plate 904 to slide. At the same time, the abutment block 905 with a rubber layer on the connecting belt 602 of the push plate 904 can be tightly abutted against the connecting conduit 1, so that the anti-bite sleeve 501 at the lower end of the adjusting sleeve 505 can be adjusted and fixed conveniently.

[0038] See also Figure 5 The base 701 is truncated in shape, and a limiting ring 13 is fixedly connected to the outer side of the lower end of the first screw sleeve 703. The lower end of the first screw sleeve 703 is plugged into and connected with the lower end of the adjusting sleeve 505 through the limiting ring 13. By plugging the limiting ring 13 on the first screw sleeve 703 into the lower end of the adjusting sleeve 505, the upper end of the connecting column 702 and the adjusting sleeve 505 can be conveniently positioned and installed.

[0039] See also Figure 5 and Figure 6A sliding groove 16 is symmetrically provided on the inner side of the groove 901, and a sliding block 14 is fixedly connected to the end of the push plate 904. The sliding block 14 and the sliding groove 16 are slidably connected. A rubber sheet 11 is bonded to the side of the block 905 away from the push plate 904, and a plurality of diamond grooves 15 are provided on the outer side of the rubber sheet 11. A second screw sleeve 12 is fixedly installed on the inner side of the adjustment sleeve 505, and one end of the stud 902 is threaded through the second screw sleeve 12. The sliding block 14 on the push plate 904 slides on the sliding groove 16 of the groove 901 to improve the stability of the push plate 904. The rubber sheet 11 with a plurality of diamond grooves 15 on one side of the block 905 can increase friction and prevent slipping, thereby ensuring the tight contact between the block 905 and the outer wall of the connecting conduit 1.

[0040] See also Figure 5 and Figure 7 A second guide groove 18 is provided on the outer side of the connecting catheter 1, and the outer wall of the airbag catheter 401 is bonded to the inner side of the second guide groove 18. The inner wall of the anti-bite sleeve 501 and the adjusting sleeve 505 are both provided with a first guide groove 10. The side of the airbag catheter 401 away from the second guide groove 18 is movably connected to the inner side of the first guide groove 10. The airbag catheter 401 is placed in the second guide groove 18 of the connecting catheter 1, and the other side of the airbag catheter 401 is movably connected to the first guide groove 10 of the anti-bite sleeve 501 and the adjusting sleeve 505, so that the airbag catheter 401 can be protected; the airbag catheter 401 is adhered to the second guide groove 18 and can be torn out to a certain length according to the usage, which can be convenient for medical staff to operate and use.

[0041] See also Figure 7 and Figure 8 The inner side of the connecting catheter 1 is respectively provided with an air guide cavity 17 and a flow guide cavity 20, the lower ends of the air guide cavity 17 and the flow guide cavity 20 are interconnected with the catheter through hole 3, and the upper end of the double interface seat 8 is respectively threadedly connected with a flow guide interface cover 21 and a gas guide joint 22, and the middle of the connecting catheter 1 is divided into two to form an air guide cavity 17 and a flow guide cavity 20, and the upper end of the air guide cavity 17 can be connected to the ventilator through the air guide joint 22 at the double interface seat 8. When the patient has gastric reflux, the drainage pipe can be inserted by removing the flow guide interface cover 21, which can be extended into the patient's body to help the patient to clean it in time to avoid danger.

[0042] The working principle of the present invention is as follows: when installing the laryngeal mask airbag 2, the laryngeal mask is inserted to the bottom along the lower wall of the patient's throat, and then after the ventilation tube is extended from the mouth, the micro-inflating and deflation pump 403 is controlled to operate through the control module 402, so that the micro-inflating and deflation pump 403 can automatically inflate the laryngeal mask airbag 2 through the airbag catheter 401. During the process of inflating the laryngeal mask airbag 2, the air pressure sensor 404 in the laryngeal mask airbag 2 can monitor the pressure in the laryngeal mask airbag 2. When the pressure of the laryngeal mask airbag 2 reaches a suitable value, the air inlet pipeline automatic valve assembly on the micro-inflating and deflation pump 403 is closed;

[0043] Then, after the laryngeal mask airbag 2 at the lower end of the connecting catheter 1 is installed, the anti-bite sleeve 501 can be adjusted to the position of the corresponding connecting catheter 1 on the gums until it is limited by the limit block 504 on the anti-bite sleeve 501, and then the stud 902 is rotated by the knob block 903, so that the stud 902 is threadedly extended and retracted on the adjustment sleeve 505, and the stud 902 rotates to push the push plate 904 to slide, and at the same time, the push plate 904 connecting belt 602 has a rubber layer of the block 905 can be pressed against the connecting catheter 1, and then the loop elastic band 603 connected to the connecting belt 602 at the extension belt 601 on both sides of the anti-bite sleeve 501 can be put on the patient's ear, and the anti-bite sleeve 501 can be further limited and fixed. At this time, the patient's teeth are placed in the tooth socket 502 with the silicone pad 503, so that the connecting catheter 1 can be protected;

[0044] During use, since the connecting catheter 1 is divided into two parts in the middle to form an air guide cavity 17 and a flow guide cavity 20, the upper end of the air guide cavity 17 can be connected to the ventilator through the air guide connector 22 at the double interface seat 8. When the patient has gastric reflux, the flow guide interface cover 21 can be removed, and the drainage pipe can be inserted into the patient's body to help the patient clean it in time to ensure the patient's life safety.

[0045] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel laryngeal mask ventilation device, characterized in that: The invention comprises a connecting catheter (1) and a laryngeal mask airbag (2), wherein an inflation mechanism (4) is provided at the upper end of the laryngeal mask airbag (2), a catheter through hole (3) is provided on the inner side of the laryngeal mask airbag (2), the laryngeal mask airbag (2) is connected to the lower end of the connecting catheter (1) through the catheter through hole (3), a double-interface seat (8) is fixedly installed at the upper end of the connecting catheter (1), an anti-bite mechanism (5) is provided on the outer side of the connecting catheter (1), the anti-bite mechanism (5) comprises an adjustment sleeve (505) and an anti-bite sleeve (501) sliding on the outer side of the connecting catheter (1), a reinforcement mechanism (6) is symmetrically provided on the outer side of the anti-bite sleeve (501), a limiting mechanism (9) is provided on the outer side of the adjustment sleeve (505), the anti-bite sleeve (501) is movably installed through the connecting mechanism (7) and the adjustment sleeve (505), and a hard steel ring (19) is provided on the inner wall of the connecting catheter (1); The inflation mechanism (4) comprises an airbag catheter (401), the lower end of the airbag catheter (401) is fixedly connected to the laryngeal mask airbag (2), the inner wall of the airbag catheter (401) is fixedly connected to a connecting wire (405), the lower end of the connecting wire (405) is fixedly connected to an air pressure sensor (404), and the air pressure sensor (404) is arranged on the inner side of the laryngeal mask airbag (2), the upper end of the connecting wire (405) is fixedly connected to a control module (402), the lower end of the control module (402) is fixedly installed with a micro-inflating and deflation pump (403), and the inflation and deflation pipe of the micro-inflating and deflation pump (403) is fixedly connected to the upper end of the airbag catheter (401).

2. A novel laryngeal mask ventilation device according to claim 1, characterized in that: A second guide groove (18) is provided on the outer side of the connecting catheter (1), the outer wall of the airbag catheter (401) is bonded to the inner side of the second guide groove (18), the inner wall of the anti-bite sleeve (501) and the adjustment sleeve (505) are both provided with a first guide groove (10), and the side of the airbag catheter (401) away from the second guide groove (18) is movably connected to the inner side of the first guide groove (10).

3. A novel laryngeal mask ventilation device according to claim 1, characterized in that: The lower end of the anti-bite sleeve (501) is provided with a tooth socket (502), the outer wall of the lower end of the anti-bite sleeve (501) extends to the inner side of the tooth socket (502) and is fixedly connected with a silicone pad (503), and the outer side of the anti-bite sleeve (501) is symmetrically fixedly connected with a limiting block (504).

4. A novel laryngeal mask ventilation device according to claim 1, characterized in that: The reinforcement mechanism (6) comprises an extension belt (601), wherein the extension belt (601) is symmetrically fixedly connected to the outer side of the anti-bite sleeve (501), and one end of the extension belt (601) away from the anti-bite sleeve (501) is fixedly connected to a connecting belt (602), and one end of the connecting belt (602) away from the extension belt (601) is fixedly connected to an elastic belt (603).

5. A novel laryngeal mask ventilation device according to claim 1, characterized in that: The connecting mechanism (7) comprises a base (701) and a fixing bolt (704); the base (701) is symmetrically fixedly connected to the upper end of the anti-bite sleeve (501); a connecting column (702) is fixedly connected to the side of the base (701) away from the anti-bite sleeve (501); an end of the connecting column (702) away from the base (701) is fixedly connected to a first screw sleeve (703); the lower end of the first screw sleeve (703) is plugged into the lower end of the adjustment sleeve (505); the upper end of the first screw sleeve (703) passes through the adjustment sleeve (505) and the fixing bolt (704) for threaded installation.

6. A novel laryngeal mask ventilation device according to claim 5, characterized in that: The base (701) is truncated in shape, the outer side of the lower end of the first screw sleeve (703) is fixedly connected to a limiting ring (13), and the lower end of the first screw sleeve (703) is plug-connected with the lower end of the adjusting sleeve (505) through the limiting ring (13).

7. A novel laryngeal mask ventilation device according to claim 1, characterized in that: The limiting mechanism (9) comprises a groove (901), wherein the groove (901) is arranged on the inner side of the adjusting sleeve (505), a push plate (904) is slidably connected to the inner side of the groove (901), a stud (902) is threadedly connected to the inner side of the adjusting sleeve (505), one end of the stud (902) is fixedly connected to a knob block (903), one end of the stud (902) away from the knob block (903) is threadedly extended into the inner side of the groove (901) and is rotatably connected to the push plate (904), a side of the push plate (904) away from the stud (902) is fixedly connected to a stop block (905), and a side of the stop block (905) away from the push plate (904) is in contact with the outer wall of the connecting conduit (1).

8. A novel laryngeal mask ventilation device according to claim 7, characterized in that: The inner side of the groove (901) is symmetrically provided with a sliding groove (16); the end of the push plate (904) is fixedly connected with a sliding block (14); the sliding block (14) and the sliding groove (16) are slidably connected; a rubber sheet (11) is bonded to the side of the stop block (905) away from the push plate (904); a plurality of rhombus-shaped grooves (15) are provided on the outer side of the rubber sheet (11); a second screw sleeve (12) is fixedly installed on the inner side of the adjustment sleeve (505); one end of the stud (902) is threadedly inserted through the second screw sleeve (12).

9. A novel laryngeal mask ventilation device according to claim 1, characterized in that: An air guide cavity (17) and a flow guide cavity (20) are respectively provided on the inner side of the connecting conduit (1); the lower ends of the air guide cavity (17) and the flow guide cavity (20) are both interconnected with the conduit through hole (3); and the upper end of the double-interface seat (8) is respectively threadedly connected with a flow guide interface cover (21) and an air guide joint (22).

Images