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WO2024199128A1 - Conduit de masque de glotte - Google Patents

Conduit de masque de glotte Download PDF

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Publication number
WO2024199128A1
WO2024199128A1 PCT/CN2024/083323 CN2024083323W WO2024199128A1 WO 2024199128 A1 WO2024199128 A1 WO 2024199128A1 CN 2024083323 W CN2024083323 W CN 2024083323W WO 2024199128 A1 WO2024199128 A1 WO 2024199128A1
Authority
WO
WIPO (PCT)
Prior art keywords
mask
glottic
opening
mask body
piriform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/083323
Other languages
English (en)
Chinese (zh)
Inventor
朱辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tianjin Medan Medical Corp
Original Assignee
Tianjin Medan Medical Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202310305608.4A external-priority patent/CN116350891A/zh
Application filed by Tianjin Medan Medical Corp filed Critical Tianjin Medan Medical Corp
Publication of WO2024199128A1 publication Critical patent/WO2024199128A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/005—Anatomical parts of the body used as an access side to the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0625—Mouth
    • A61M2210/065—Throat; Pharynx

Definitions

  • the invention relates to a glottic mask catheter, belonging to the technical field of medical devices.
  • the laryngeal mask is a medical device used to maintain the patient's airway and is usually used during anesthesia and surgery. Similar to a mask that is buckled on the outside of the mouth and nose for assisted breathing, the laryngeal mask is inserted from the patient's mouth to the throat and covered on the outside of the throat for assisted breathing. Because it is a type of supraglottic airway, it is also called the Glottis Mask (GM).
  • GM Glottis Mask
  • the concept of the laryngeal mask was first proposed by British anesthesiologist Archibald Brain in 1983. He envisioned a device that could more easily and effectively maintain the airway to replace the traditional mask and endotracheal intubation.
  • LMA laryngeal mask airway
  • SLIPA Streamlined Liner of Pharyngeal Airway
  • Inflatable laryngeal masks cause great harm to patients and cause lesions in patients, including physiological changes that are difficult to accept and occur simultaneously, as well as temporary or permanent anatomical damage.
  • it is difficult to accurately determine the inflation volume when using the laryngeal mask for patients with different physical characteristics or under different medical conditions, which brings certain difficulties to the physician's inflation operation.
  • the airless laryngeal mask can wrap and seal the throat, and there is no need for secondary inflation after insertion. However, it is required to pass through the mouth smoothly during insertion, and there must be no obstruction from the tongue.
  • the depth of insertion also requires certain judgment. It cannot be inserted too deep or too shallow, otherwise there will be a risk of poor fit and air leakage. Therefore, there will be some problems during the insertion operation for inexperienced physicians. They cannot ensure that the laryngeal mask can be inserted smoothly and in the appropriate position at one time, that is, it is too deep or too shallow, and they cannot ensure that the laryngeal mask and the throat are truly fitted and cannot effectively stabilize the laryngeal mask, which will affect subsequent operations.
  • sealing is an important feature and is critical for maintaining a clear airway for the patient.
  • the human oral cavity connects the trachea 101 and the esophagus 102, and the laryngeal opening 103 is located at the intersection of the trachea and the esophagus.
  • the laryngeal opening 103 is the upper opening of the laryngeal cavity 104, which is surrounded by the upper edge of the epiglottis 105a, the arytenoid epiglottic folds 106 and the interarytenoid notch 107.
  • the glottis 108 is located in the laryngeal cavity 104, that is, at the lower part of the laryngeal opening 103, and is the opening between the two vocal cords 108a.
  • the arytenoid epiglottic fold 106 is a triangular mucosal fold (fold - non-bone joint) wrapped with ligaments and muscle fibers, extending from the lateral edge of the epiglottis to the arytenoid cartilage 109.
  • the fold is triangular, narrow in front, wide in the back, and inclined downward and backward.
  • the arytenoid epiglottic fold 106 is bounded by the epiglottis 105 in the front; in the back, it is bounded by the top of the arytenoid cartilage 109, the corniculate cartilage 110 and the interarytenoid notch 107.
  • the tracheal wall is supported by the cricoid cartilage 111, so it will not collapse, ensuring smooth ventilation, and the esophagus 102 is in a flat state under normal circumstances, and it is propped up when food enters.
  • the cricoid cartilage 111 is located below the thyroid cartilage 112. It is shaped like a finger ring. The front part is narrow and low, called the cricoid cartilage arch 111a, and the back part is high and wide, called the cricoid cartilage plate 111b.
  • the arytenoid cartilage 109 and the cornuate cartilage 110 are located above the cricoid cartilage plate 111b.
  • the tip of the arytenoid cartilage 109 is connected to the cornuate cartilage 110.
  • the epiglottis 105 When breathing, the epiglottis 105 is lifted up, the laryngeal opening 103 is opened to allow ventilation of the trachea 101, and the epiglottis 105 and the tongue root 115 form an epiglottal valley 116; during eating, the epiglottis 105 droops to close the laryngeal opening 103 to prevent food or water from entering the trachea.
  • the piriformis recess is not a "pit” but an irregular gap.
  • food or water falls on the epiglottis 105 and slides down to the piriformis recess 113 on both sides, and then goes down into the esophagus 102 after passing through the piriformis recess 113, instead of directly entering the esophagus through the gap 114 behind the cricoid cartilage.
  • the medical staff in order to ensure that the laryngeal mask forms a good seal, the medical staff usually inserts the distal end 1b of the mask body 1 into the gap 114 in the posterior area of the cricoid cartilage (i.e., the gap between the cricoid cartilage plate and the posterior wall of the pharynx), so that the mask body 1 applies a squeezing force to the front side on the cricoid cartilage 111. Since the distal end of the mask body 1 is inserted too deeply, the connective tissue in the gap 114 in the posterior area of the cricoid cartilage will be damaged.
  • the laryngeal opening 103 is an oblique opening.
  • the mask body of the laryngeal mask is usually also set to a shape with a thin distal end and a thick proximal end to adapt to the structure of the laryngeal opening 103.
  • the airway opening of the traditional laryngeal mask is generally opposite to the laryngeal opening, rather than to the glottis, as shown in Figure 4, which results in an S-shaped bending path between the airway inside the laryngeal mask and the glottis and trachea, affecting the ventilation efficiency.
  • the endotracheal tube 100 When inserting the endotracheal tube, as shown in FIG5 , the endotracheal tube 100 needs to be bent and inserted into the throat, and then bend in the opposite direction to enter the glottis after entering the throat.
  • the bent path creates obstacles during the introduction of medical devices such as the endotracheal tube, bronchial occluder, and endoscope.
  • the purpose of the present invention is to overcome the defects in the above-mentioned prior art and provide a glottic mask with a piriform sinus fitting portion, wherein the piriform sinus fitting portion arranged at the distal end of the mask body is matched with the two piriform sinuses of the human body, can be effectively filled into the piriform sinus to form a close contact with the piriform sinus, and is more in line with the anatomical structure of the human larynx.
  • a glottic mask catheter of the present invention comprises a mask body and a tube body connected to the mask body; a concave cavity is formed inside the mask body, and an airway is arranged in the tube body to connect to the concave cavity; the distal end of the mask body is provided with two convex piriform sinus matching parts spaced apart from each other and a recessed part located between the two piriform sinus matching parts; when the mask body is extended through the oral cavity of a human body to the position of the laryngeal opening and covers the laryngeal opening of the human body to form a close contact with the laryngeal opening of the human body in accordance with the anatomical structure of the human body, the two piriform sinus matching parts are inserted into their respective corresponding piriform sinus to match with the piriform sinus.
  • a distal opening is arranged at the end of at least one of the pear-shaped sinus matching parts, and a stomach tube channel connected to the distal opening is arranged at the side of the tube body.
  • the ends of the two piriform sinus matching parts are both provided with distal openings, and the two stomach tube channels are symmetrically distributed on both sides of the tube body.
  • the channel opening of the airway faces the distal end of the mask body; in the longitudinal section of the glottic mask catheter, the portion of the mask body located from the distal end to the channel opening is an extension of the lower wall of the tube body, and the channel opening can achieve direct ventilation facing the glottis.
  • the thickness of the pear-shaped dimple fitting portion is greater than the thickness of the recessed portion, and the pear-shaped dimple fitting portion protrudes from the recessed portion toward the inner side of the cover body.
  • An arc-shaped recessed portion is arranged on the bottom wall of the cavity.
  • An epiglottic support is arranged inside the cover body, and a limiting plate portion is arranged above the epiglottic support, and a containing cavity with an opening is formed between the limiting plate portion and the epiglottic support.
  • the end of the limiting plate portion extends toward the distal direction and protrudes from the end of the epiglottic support.
  • the distal end of the epiglottic support has a wedge-shaped guide surface.
  • the back side of the cover body is provided with a groove, and the groove is at least one, which is used to bring the sputum entering the groove out of the body when the cover body inserted into the throat of the human body is pulled out.
  • Two left and right opposite eaves are arranged on the outer side of the passage opening.
  • the glottic mask catheter of the present invention has the following beneficial effects compared with the prior art:
  • the far end of the mask body has a raised pear-shaped fossa matching part, which is more in line with the anatomical structure of the human throat. Therefore, when the mask body is extended through the human mouth to the throat opening and covers the throat opening of the human body, it can form a close fit with the throat opening of the human body in line with the anatomical structure of the human body;
  • the piriform sinus fitting part When the piriform sinus fitting part is inserted into the piriform sinus, it can prop up the piriform sinus to form a limiting structure, which stabilizes the glottic mask and ensures that the glottic mask is placed in place, so that the physician can have a better operating experience, reduce the intubation time, and improve the safety of the operation;
  • the concave part Since the two piriform sinus matching parts are convex relative to the concave part, the concave part will not be inserted into the gap between the cricoid cartilage plate and the posterior pharyngeal wall, thus not causing damage to the connective tissue in the area, thus alleviating the patient's postoperative pain;
  • the opening of the airway faces the distal end of the mask body, and the portion of the mask body between the distal end and the opening of ...
  • the epiglottis is restricted by the accommodation cavity formed between the epiglottis support and the limiting plate, and the end of the limiting plate can reach the epiglottis valley and be clamped, forming a stable insertion structure, effectively preventing the mask from shifting during the surgical operation;
  • the wedge-shaped guide surface of the epiglottic support can provide guidance for the patient's epiglottis when the mask is inserted, making it easier for the epiglottis to be lifted and placed in the upper area of the epiglottic support.
  • Figure 1 is a schematic diagram of the structure of the human larynx.
  • Figure 2 is a schematic diagram of the structure of the glottis.
  • FIG. 3 is a top view of the structure of the glottis.
  • FIG. 4 is a schematic diagram of a state in which a laryngeal mask is placed in the oral cavity for ventilation in the prior art.
  • FIG. 5 is a schematic diagram of a state in which a laryngeal mask is placed in the oral cavity and endotracheal intubation is performed in the prior art.
  • FIG. 6 is a perspective view of the first embodiment of the glottic mask catheter of the present invention.
  • FIG. 7 is a second perspective view of the first embodiment.
  • FIG8 is a front view of the first embodiment.
  • FIG. 9 is a top view of the first embodiment.
  • FIG. 10 is a longitudinal cross-sectional view of the first embodiment.
  • FIG. 11 is a partial cross-sectional view of the first embodiment.
  • FIG. 12 is a schematic diagram of the state of endotracheal intubation after the glottic mask catheter is placed into the oral cavity in Example 1.
  • FIG. 12 is a schematic diagram of the state of endotracheal intubation after the glottic mask catheter is placed into the oral cavity in Example 1.
  • FIG. 13 is a perspective view of the second embodiment.
  • FIG. 14 is a front view of the second embodiment.
  • FIG. 15 is a top view of the second embodiment.
  • FIG16 is a longitudinal cross-sectional view of the second embodiment.
  • FIG17 is a longitudinal cross-sectional view of the third embodiment.
  • FIG. 18 is a top view of the third embodiment.
  • FIG. 19 is a stereoscopic diagram of the fourth embodiment.
  • FIG. 20 is a three-dimensional view of the fourth embodiment from another angle.
  • FIG. 21 is a front view of the fifth embodiment.
  • FIG. 22 is a three-dimensional diagram of the fifth embodiment.
  • FIG. 23 is a stereoscopic diagram of the sixth embodiment.
  • FIG24 is a longitudinal cross-sectional view of the sixth embodiment.
  • Figure 25 is a cross-sectional view taken along the line A-A in Figure 24.
  • the present embodiment provides a glottic mask catheter, comprising a mask body 1 and a tube body 2 connected to the mask body 1.
  • a concave cavity 1a is formed inside the mask body 1
  • an airway 3 is arranged inside the tube body 2 to communicate with the concave cavity 1a, and a channel opening 31 of the airway 3 is arranged toward the distal end of the mask body 1.
  • the mask body 1 is in a wedge shape with a thin distal end and a thick proximal end.
  • the shape and contour of the opening edge of the concave cavity 1a correspond to the structure of the human throat, and the mask body 1 can cover the human throat.
  • the inventor of the present application has found that during the use of the glottic mask catheter, if a special structure is provided at the distal end of the mask body, after the mask body is inserted into the laryngopharynx, if the special structure can be inserted into the channel or space formed by the piriform fossa, it can play a role in limiting the insertion of the mask body, preventing the mask body from being inserted too deeply or too shallowly, that is, through this structure, in addition to ensuring that the mask body is placed in place and preventing the mask body from being placed too deeply or too shallowly, the mask body and the laryngeal opening can be truly in close contact with the human anatomical structure, and at the same time, the piriform fossa is used to wrap the inserted special structure, which plays a role in stabilizing the glottic mask.
  • the special structure can ensure that the glottic mask is placed in an ideal position and can stabilize the glottic mask after being inserted in place to prevent displacement or movement.
  • the inventor of the present application has found through studying the anatomical structure of the entrance of the human larynx that if a protruding matching structure is provided at the distal end of the mask body, the anatomical characteristics of the two piriform fossa are used to form a corresponding limiting effect, then the above-mentioned functions and effects can be achieved, which can not only limit the position of the mask body insertion but also stabilize or stabilize the inserted mask body.
  • the applicant has provided two mutually spaced convex piriform fossa fitting parts 4 and a recessed part 5 between the two piriform fossa fitting parts 4 at the distal end 1b of the mask body 1.
  • the two piriform fossa fitting parts 4 correspond to the two piriform fossa of the human body and are generally arranged symmetrically. After the mask body 1 covers the throat of the human body and achieves close contact with the throat, it achieves a close contact that conforms to the anatomical structure of the human body.
  • the two piriform fossa are inserted by the piriform fossa fitting parts 4 and form a limiting effect, thereby solving the problem encountered by doctors in the process of inserting the glottic mask catheter that the mask body cannot effectively ensure that it reaches the ideal position to achieve close contact with the throat.
  • the thickness of the pear-shaped fossa fitting part 4 is greater than the thickness of the recessed part 5, and the pear-shaped fossa fitting part 4 protrudes from the recessed part 5 toward the inner side of the mask body 1.
  • the pear-shaped fossa fitting part 4 is a single protruding structure.
  • each pear-shaped fossa fitting part can also be a combined protruding structure formed by a group of small protrusions.
  • the back of the mask body 1 (the opposite side of the opening of the concave cavity 1a) forms a flat curved surface, which can be pressed against the mucosal tissue of the posterior pharyngeal wall.
  • the pear-shaped fossa fitting part 4 can enter into the pear-shaped fossa and fill the irregular gap of the pear-shaped fossa, thereby propping up the pear-shaped fossa, and the mucosal tissue at the pear-shaped fossa position wraps the pear-shaped fossa fitting part 4.
  • the recessed portion 5 can be set to a variety of different wall thickness specifications so that it can reach different relative positions of the arytenoid cartilage.
  • the recessed portion 5 when the recessed portion 5 is thicker, it can be squeezed above the arytenoid epiglottic fold; when the recessed portion 5 is thinner, it can be squeezed into the gap between the posterior side of the arytenoid cartilage and the corneal cartilage and the posterior pharyngeal wall. Due to the mutual limiting effect between the piriformis sinus matching portion 4 and the piriformis sinus, the distance that the recessed portion 5 enters into the gap can be shorter.
  • the portion of the mask body 1 from the distal end 1b to the channel opening 31 is an extension section A of the lower wall of the tube body 2, and there is no protrusion on the extension section A that blocks the airflow, and the channel opening 31 is directly opposite to the glottis, so that when oxygen is introduced into the airway 3, the airflow can be blown directly toward the glottis without obstruction after flowing out from the channel opening 31.
  • a distal opening 41 is provided at the end of each piriform fossa matching portion 4, and a gastric tube channel 7 connected to the distal opening 41 is provided on the side of the tube body 2.
  • the two gastric tube channels 7 are symmetrically distributed on both sides of the tube body 2, which can meet the intubation requirements of various laparoscopic devices such as gastric tubes and fiberoptic bronchoscopes.
  • the tube body 2 is a straight tube or a prefabricated curved tube in its natural state, and can also be set as an integrated structure with the cover body 1, which is integrally cast by different materials, so as to maintain the flexibility of the tube body 2 and enable the outer surface of the cover body 1 to have a soft medical elastic material tissue structure.
  • An epiglottic support 6 is provided inside the mask body 1. After the mask body 1 is put in place, the epiglottic support 6 is used to support the epiglottis to prevent the epiglottis from closing, keep the epiglottis in an open state, and prevent the epiglottis from blocking the airway due to airflow reversal, thereby exposing the glottis and quickly and safely establishing an artificial airway.
  • the epiglottic support 6 is an extension of the upper wall of the tube body 2.
  • the difference from the first embodiment is that the recessed portion 5 has a front end in a smooth arc chamfered shape, so that it can be smoothly inserted into the gap between the arytenoid cartilage and the cornu cartilage and the posterior pharyngeal wall during operation, and an arc-shaped recessed portion 1a1 is provided on the bottom wall of the concave cavity 1a.
  • the recessed portion 5 When the recessed portion 5 is inserted into the aforementioned gap, the arytenoid cartilage and the cornu cartilage enter the recessed portion 1a1 so that they can be offset outward relative to the airway to avoid obstruction to the airflow or surgical catheterization.
  • an arc-shaped arched thickened portion 1c is provided on the outer side wall of the mask body 1 to compensate for the reduction in wall thickness caused by the recessed portion provided on the bottom wall of the concave cavity, so that the back of the mask body can fully contact and squeeze the mucosal tissue of the posterior pharyngeal wall to maintain good sealing.
  • a limiting plate portion 61 is provided above the epiglottic support 6, and an accommodating cavity 60 with an opening is formed between the limiting plate portion 61 and the epiglottic support 6.
  • the epiglottis enters the accommodating cavity 60 and is confined in the accommodating cavity 60, which is beneficial to limiting the epiglottis.
  • the end of the limiting plate portion 61 extends toward the distal direction and protrudes from the end of the epiglottic support 6, which enables the limiting plate portion 61 to reach the epiglottic valley and be clamped and limited, forming a stable insertion structure, effectively preventing the mask body 1 from shifting during the surgical operation.
  • the distal end of the epiglottic support 6 has a wedge-shaped guide surface 6a.
  • the guide surface 6a can provide a guide for the patient's epiglottis when the mask body 1 is inserted, so that the epiglottis can be lifted more easily and enter the upper area of the epiglottic support 6.
  • some well-known epiglottis support structures or epiglottis lifting fences may be provided to achieve the same function and prevent the epiglottis from blocking the air outlet and obstructing the airway.
  • gastric tube channel 7 is provided on one side of the tube body 2 and is connected to the tube body 2 as a whole, forming a double-cavity tube body structure.
  • the gastric tube channel 7 extends from the proximal end of the tube body 2 to the distal end of the cover body 1, and its distal opening 41 is located on one of the piriform sinus mating parts 4.
  • the gastric tube channel 7 is arranged in parallel with the tube body 2 and can be prefabricated into a shape with a certain curvature. After the gastric tube channel 7 is filled in the piriform sinus fitting part 4 to form a seal, the gastric tube can pass through the gastric tube channel 7 and enter the human stomach through the esophagus to extract gastric juice, or be used for gastric decompression to avoid gastric acid reflux, thereby reducing the risk of pulmonary aspiration.
  • the cross-sectional shape of the gastric tube passage 7 can be circular, flat, elliptical, or D-shaped, etc.
  • the cross-sectional shape of the catheter 2 can be circular, flat, elliptical, or D-shaped, etc. or any known shape.
  • the gastric tube channel may also have a separate catheter, which is bonded to the tube body 2 or fixed by other manufacturing processes.
  • a groove 12 is provided on the back side of the mask body 1. When the glottic mask is pulled out, the groove 12 can bring out the laryngeal sputum formed in the throat of the patient that has entered the groove out of the body.
  • the groove can be a circular groove and/or an arc-shaped groove, and can be arranged in one or more intervals or in any other manner.
  • the glottic mask catheter of the present invention may not be provided with a gastric tube channel, and only a tube body 2 having an airway 3 inside thereof may be provided to be connected to the mask body 1 .
  • two opposite eaves are provided on the outer side of the channel opening 31, so that the width of the channel opening 31 can be appropriately narrowed, thereby facilitating the lifting of the epiglottis and effectively preventing the epiglottis from entering the channel opening 31 and blocking the airway.
  • the mask body can be made of any suitable soft plastic material, which has a soft, deformable and fixed-shape surface that can fit on the throat to minimize potential damage to the tissue structure of the throat while still having good sealing properties.
  • the pear-shaped fossa mating portion integrally formed with the cover body also has corresponding softness and is deformable, so that damage inside the pear-shaped fossa can be reduced when mating with the pear-shaped fossa.
  • the mask body is made of a non-toxic and highly soft thermoplastic elastomer, which has the same plasticity as rubber and the elasticity and shape memory of vulcanized rubber.
  • the material is environmentally friendly, halogen-free, non-toxic, and odorless, and does not contain plastic softeners, phthalates, heavy metals and other compounds. It can provide the same softness as the laryngeal tissue, reduce pressure on the patient's throat, and reduce the occurrence of postoperative throat pain; it has a certain plasticity, can perfectly wrap the throat, avoid air leakage, improve the patient's comfort during use, and alleviate the patient's postoperative throat discomfort symptoms.
  • the glottic mask catheter provided by the present invention can, after being inserted into the throat of a human body, have the mask body tightly wrap the human throat opening and form a close fit with the human throat opening that conforms to the anatomical structure; at the same time, the piriformis fossa mating portion at the distal end of the mask body can be filled into the corresponding piriformis fossa and form a close fit with the two piriformis fossa of the human body to form a corresponding limiting structure, which limits the insertion position of the mask body and ensures that the insertion position of the mask body meets expectations, thereby achieving the establishment of an ideal end-to-end sealed artificial airway to ensure smooth ventilation during surgery; at the same time, it can meet the intubation requirements of laparoscopic equipment such as gastric tubes and fiberoptic bronchoscopes.
  • the structure of the tube body described in the embodiment of the present invention can be any known laryngeal mask, glottic mask or ventilation catheter structure of a supraglottic airway device. It can be a tube with a circular cross-section or a flat tube. It can be a straight tube or a tube prefabricated with a certain curve. The present invention does not limit it.
  • the mask body is an inflation-free mask body.
  • the external structure is optimized to be more in line with the anatomical structure of the larynx, effectively reducing the obstruction of the tongue during insertion.
  • the designed piriform sinus mating part facilitates the insertion and positioning of the mask body, so that it has a good sealing effect on the laryngeal opening after insertion; it is also easier for doctors to operate, safer, and can effectively reduce patients' postoperative throat discomfort.
  • the glottic mask catheter according to the embodiment of the present invention can provide physicians with a better operating experience, improve the success rate of mask insertion, reduce intubation time, and improve surgical safety.

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  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un conduit de masque de glotte, comprenant un corps de masque et un corps de tube relié au corps de masque. Une cavité évidée est formée sur le côté interne du corps de masque, et un passage d'air est formé dans le corps de tube et en communication avec la cavité évidée ; deux parties correspondantes de sinus piriforme en saillie espacées l'une de l'autre et une partie en retrait située entre les deux parties correspondantes de sinus piriforme est disposée à une extrémité distale du corps du masque ; et lorsque le corps de masque est inséré dans une position d'ouverture laryngée via une cavité buccale d'un corps humain et recouvre une ouverture laryngée du corps humain pour former un contact étroit, se conformant à une structure anatomique du corps humain, avec l'ouverture laryngée du corps humain, les deux parties correspondantes de sinus piriforme sont insérées dans les sinus piriformes respectivement correspondants pour coopérer avec les sinus piriformes. Selon le conduit de masque de glotte, les parties correspondantes de sinus piriforme en saillie sont disposées au niveau de l'extrémité distale du corps de masque, se conformant mieux à une structure anatomique d'un larynx humain, et par conséquent, lorsque le corps de masque est inséré dans la position d'ouverture laryngée via la cavité buccale du corps humain et recouvre l'ouverture laryngée du corps humain, de façon à former le contact étroit, se conformant à la structure anatomique du corps humain, avec l'ouverture laryngée du corps humain.
PCT/CN2024/083323 2023-03-27 2024-03-22 Conduit de masque de glotte Pending WO2024199128A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN202310305608.4 2023-03-27
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CN209996959U (zh) * 2018-12-28 2020-01-31 天津麦迪安医疗器械有限公司 加强型声门罩通气道
WO2020029481A1 (fr) * 2018-08-09 2020-02-13 中南大学 Sonde oropharyngée
CN215191841U (zh) * 2021-01-18 2021-12-17 首都医科大学附属北京潞河医院 一种祛痰压舌板
CN116350891A (zh) * 2022-11-22 2023-06-30 天津麦迪安医疗器械有限公司 具有梨状窝内限位结构的声门罩

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US20050081861A1 (en) * 2002-08-14 2005-04-21 Nasir Muhammed A. Airway device
CN106581832A (zh) * 2016-12-22 2017-04-26 天津麦迪安医疗器械有限公司 一种开边式罩杯型密闭喉口周围组织的通气道
WO2020029481A1 (fr) * 2018-08-09 2020-02-13 中南大学 Sonde oropharyngée
CN209996959U (zh) * 2018-12-28 2020-01-31 天津麦迪安医疗器械有限公司 加强型声门罩通气道
CN215191841U (zh) * 2021-01-18 2021-12-17 首都医科大学附属北京潞河医院 一种祛痰压舌板
CN116350891A (zh) * 2022-11-22 2023-06-30 天津麦迪安医疗器械有限公司 具有梨状窝内限位结构的声门罩

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