Lip and teeth protection assembly for assisting rigid bronchoscopy insertion

Abstract

The utility model provides a kind of lip teeth protection assembly for assisting rigid bronchoscope insertion, belong to biomedical engineering technical field.The lip teeth protection assembly for assisting rigid bronchoscope insertion of the utility model includes lip teeth protection mechanism and pressing plate mechanism, and lip teeth protection mechanism includes 2 lip teeth protection units and 2 damping pivots, and pressing plate mechanism is overall arc bending, for assisting rigid bronchoscope insertion patient's throat and via rigid bronchoscope abut on the force on patient's tongue root and throat portion.The lip teeth protection assembly of the utility model can assist rigid bronchoscope insertion patient's oral cavity and throat portion, reduce the mucous membrane injury of patient's oral cavity and throat portion caused by rigid bronchoscope direct insertion.The lip teeth protection assembly of the utility model can also protect patient's lip portion and tooth portion when medical staff open patient's oral cavity, and provide some rotational damping support force for patient's upper and lower jaw, so that patient's upper and lower jaw opening process is more stable.

Description

Technical Field

[0001] This invention belongs to the field of biomedical engineering technology, specifically relating to a lip and teeth protection component for assisting in the insertion of a rigid bronchoscope. Background Technology

[0002] Chinese utility model patent CN221600193U discloses a protective dental crown for rigid bronchoscopy, whose support can be inserted into the mouth where the mouth is small to provide support. The support is located outside the patient's mouth and does not hinder the movement of the rigid bronchoscope. Moreover, the protective dental crown for rigid bronchoscopy of this utility model can provide a good field of vision for the operation.

[0003] However, the protective mouthguards used in the above-mentioned rigid bronchoscopy examinations have the following problems in actual use:

[0004] (1) The support device requires medical staff to hold it firmly to keep it in an open state. If the force is slightly less or the gripping force changes slightly, the open state will change significantly. It cannot be suspended or provide a certain degree of suspension force, and is not suitable for use in actual situations.

[0005] (2) When the rigid bronchoscope is used to open the patient's upper and lower jaws, the protective mouthguard only protects the patient's teeth and does not protect the patient's upper and lower lips. If the rigid bronchoscope is used for too long, the patient's lips may be pressed against the device, causing pressure sores or damage to the mucosa of the lip.

[0006] (3) The device can only open the patient’s upper and lower jaws. However, in actual use, the rigid bronchoscope is still directly inserted into the patient’s mouth and throat, which can easily cause damage to the mucous membrane of the patient’s mouth and throat or cause congestion due to pressure, which is not conducive to the patient’s recovery. Utility Model Content

[0007] This invention was developed to solve the above-mentioned problems, and its purpose is to provide a lip and teeth protection component for assisting in the insertion of a rigid bronchoscope.

[0008] This invention provides a lip and teeth protection component for assisting in the insertion of a rigid bronchoscope. It includes a lip and teeth protection mechanism and a pressure plate mechanism. The lip and teeth protection mechanism comprises two lip and teeth protection units and two damping shafts. The lip and teeth protection units are generally U-shaped, and their outlines roughly match the outlines of the patient's upper or lower teeth for biting. The two U-shaped ends of each of the two lip and teeth protection units are rotatably connected to each other via the damping shafts. The pressure plate mechanism is generally curved, and one side of its extension length is detachably rotatably connected to the two ends of the U-shaped structure of the lip and teeth protection units. The pressure plate mechanism assists in the insertion of the rigid bronchoscope into the patient's larynx, and the force exerted by the rigid bronchoscope presses against the patient's tongue and larynx.

[0009] The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope provided by this utility model may also have the following features: the lip and teeth protection unit includes: a support plate, which is a U-shaped rigid structure that conforms to the outline of human upper or lower teeth. The support plate is covered with medical silicone rubber. The patient's upper or lower teeth abut against the medical silicone rubber on one side of the support plate. The ends of the U-shaped structures of the two support plates are respectively connected by a damping pivot to achieve a rotatable suspension. The tooth protection sleeve is made of medical silicone rubber. Correspondingly, it extends outward from the outer edge and inner edge of the U-shaped structure of the medical silicone rubber covering the support plate in a direction perpendicular to its plane to form a U-shaped groove with an opening facing away from the plane of the support plate. This U-shaped groove is referred to as the occlusal groove, which is used for the patient's upper or lower teeth to bite into.

[0010] The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope provided by this utility model may also have the following features: the lip and teeth protection unit further includes a lip protection sleeve, which is made of medical silicone rubber. The medical silicone rubber wrapped around the outside of the support plate and the corresponding tooth protection sleeve together form a U-shaped structure extending out integrally, and cooperate with the outer wall of the corresponding occlusal groove to form a U-shaped groove structure. This U-shaped groove is referred to as the lip protection groove, which is used for the user's upper or lower lip to be placed in it for protection.

[0011] The lip and tooth protection assembly for assisting in the insertion of a rigid bronchoscope provided by this utility model may also have the following features: the lip and tooth protection unit further includes a lip and tooth isolation layer, which extends integrally from the outer wall of the U-shaped structure of the tooth protector and its extension direction is the same as the opening direction of the occlusal groove. The lip and tooth isolation layer is used to separate the patient's lips and teeth to prevent the lips and teeth from being directly squeezed against each other. The lip and tooth isolation layer and the lip protector together constitute a lip protection groove with a U-shaped groove structure.

[0012] The lip and teeth protection component for assisting rigid bronchoscope insertion provided by this utility model may also have the following features: the inner diameter of the arc segment of the U-shaped structure of the lip and teeth protection unit is 45mm to 55mm, the groove width of the occlusal groove is 6mm to 12mm, the groove width of the lip protection groove is 8mm to 15mm, the thickness of the medical silicone rubber covering the support plate is 2mm to 3mm, the thickness of the dental protective sleeve made of medical silicone rubber is 2mm to 3mm, and the thickness of the lip protective sleeve and the lip and teeth isolation layer made of medical silicone rubber is 2.5mm to 3mm.

[0013] The lip and teeth protection assembly for assisting rigid bronchoscope insertion provided by this utility model may also have the following features: Two lip and teeth protection units are respectively designated as the first lip and teeth protection unit and the second lip and teeth protection unit. One of the first lip and teeth protection units and the second lip and teeth protection unit is used to support the patient's upper teeth when biting down, and the other is used to support the patient's lower teeth when biting down. The two ends of the U-shaped structure of the first lip and teeth protection unit each extend with a first mating segment. The two first mating segments are parallel to each other and coplanar with the first lip and teeth protection unit. The two ends of the U-shaped structure of the second lip and teeth protection unit each extend with a second mating segment and a third mating segment. The second mating segments are parallel to each other and are coplanar with the second labial and dental protection unit. The two third mating segments are integrally formed and extend from the two second mating segments respectively, with the extension direction opposite to the side of the second labial and dental protection unit for the patient's upper or lower teeth to bite. The first labial and dental protection unit clamps the two third mating segments on the second labial and dental protection unit through the two first mating segments on it, or the first labial and dental protection unit is clamped by the two third mating segments on the second labial and dental protection unit through the two first mating segments on it. The first mating segment and its adjacent third mating segment can achieve relative rotation that can be suspended through a damping pivot, and the plane formed by the rotation direction is perpendicular to the plane where the labial and dental protection unit is located.

[0014] The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope provided by this utility model may also have the following features: the damping shaft includes a fixed end and a damping rotating end, the fixed end and the damping rotating end are coaxial and can achieve relative rotation and hovering with damping force, the damping rotating end has a block-shaped protrusion in the radial direction, the protrusion is referred to as the matching part, one of the first mating section and the adjacent third mating section has a through hole or channel into which the damping rotating end and its matching part can be correspondingly embedded, the through hole or channel is referred to as the embedding part, and the other of the first mating section and the adjacent third mating section is fixedly connected to the fixed end and does not rotate relative to it.

[0015] The lip and teeth protection assembly for assisting rigid bronchoscope insertion provided by this utility model may also have the following features: the pressure plate mechanism includes an interconnected tongue base pad unit and a laryngeal pad unit. The tongue base pad unit is a flat plate, and the laryngeal pad unit is an arc-shaped curved plate that matches the curvature of the patient's larynx, with its width gradually narrowing along the extension direction of the arc. The end face of the arc-shaped curved plate of the laryngeal pad unit is a smooth elliptical tip arc structure. The first or second mating segment is within its own length... A fourth mating section extends in the degree direction and is integrally formed. The fourth mating section has a columnar groove, and the opening of the columnar groove faces the U-shaped structure of the lip and teeth protection unit. The two ends of one side of the tongue base pad unit have lateral protrusions. The protrusions are coplanar with the tongue base pad unit. The protrusions have columnar protrusions that are away from the tongue base pad unit. The columnar protrusions are matched and embedded in the columnar grooves. The protrusions are made of a hard material with a certain degree of toughness and are covered with medical silicone rubber. The columnar protrusions are fixedly connected to the protrusions.

[0016] The lip and teeth protection assembly for assisting rigid bronchoscope insertion provided by this utility model may also have the following features: the tongue base pad unit and the laryngeal pad unit are telescopically designed. The tongue base pad unit has a recessed embedding groove on the side opposite to the protruding section. The opening of the embedding groove has a pair of opposing anti-dislodgement protrusions on both sides. The extension end of the anti-dislodgement protrusion has an adjusting tooth. The laryngeal pad unit includes a telescopic part and a pad part. The telescopic part is a T-shaped flat plate. The width of the head of the T-shape is the same as the width of the embedding groove. The width of the body of the T-shape is the same as the distance between the two anti-dislodgement protrusions. The telescopic part is telescopically disposed in the embedding groove. Two opposite sides of the telescopic part have a groove along the length direction. The corresponding groove has a row of matching teeth inside. The matching teeth and the adjusting teeth are matched and engaged. The pad part is connected to the T-shaped bottom of the telescopic part.

[0017] The lip and teeth protection component for assisting in the insertion of a rigid bronchoscope provided by this utility model may also have the following features: the first mating section, the second mating section, the third mating section, and the fourth mating section are all externally covered with a rigid material of medical silicone rubber with a thickness of 2mm to 3mm; the tongue base pad unit has a thickness of 2mm to 3mm; the tongue base pad unit as a whole has a trapezoidal structure with an upper base length of 25mm to 30mm, a lower base length of 59mm to 62mm, and a height of 1cm to 2cm; the depth of the embedded groove is 10mm to 20mm, the width is 25mm to 30mm, and the thickness is 2mm to 3mm; and there are two anti-dislodgement features. The distance between the protrusions is 21mm to 26mm. The width of the T-shaped head of the telescopic part is the same as the width of the embedded groove. The width of the T-shaped body of the telescopic part is the same as the distance between the two anti-drop protrusions. The thickness of the telescopic part is the same as the thickness of the embedded groove. The extension length of the pad part is 4cm to 5cm, the arc is 90° to 120°, and the thickness is 1mm to 2mm. The width at the connection between the pad part and the telescopic part is 25mm to 30mm. The front diameter of the smooth elliptical tip arc structure at the end of the pad part is 10mm to 15mm, and the tip arc angle of the tip arc structure is θ1 = 45° to 50°.

[0018] Functions and effects of utility models

[0019] According to the present invention, a lip and teeth protection component for assisting the insertion of a rigid bronchoscope includes a lip and teeth protection mechanism and a pressure plate mechanism. The lip and teeth protection mechanism includes two lip and teeth protection units and two damping shafts. The lip and teeth protection units are generally U-shaped, and their outlines roughly match the outlines of the patient's upper or lower teeth so as to allow the patient's upper or lower teeth to bite. The two U-shaped ends of each of the two lip and teeth protection units are rotatably connected to each other through the damping shafts. The pressure plate mechanism is generally curved, and one side of its extension length direction is detachably rotatably connected to the two ends of the U-shaped structure of the lip and teeth protection units. The pressure plate mechanism is used to assist the insertion of the rigid bronchoscope into the patient's larynx and presses the patient's tongue root and larynx with the force of the rigid bronchoscope abutting against it.

[0020] Therefore, the lip and teeth protection component for assisting in the insertion of a rigid bronchoscope of this invention has the following beneficial effects:

[0021] (1) The lip and teeth protection mechanism and the pressure plate mechanism can press the patient's tongue root and larynx with the force of the rigid bronchoscope while assisting in the insertion of the rigid bronchoscope, thereby exposing the patient's glottis. This makes the insertion of the rigid bronchoscope into the patient's larynx smoother and reduces the mucosal damage to the patient's oral cavity and larynx caused by direct insertion of the rigid bronchoscope to a certain extent.

[0022] (2) The rotatable and detachable design between the lip and teeth protection mechanism and the pressure plate mechanism can increase the freedom of the whole device. Different sizes of pressure plate mechanisms can be replaced as needed to adapt to the depth and curvature of the oral cavity to the larynx of different patients. After the rigid bronchoscope is inserted, the pressure plate mechanism can be manually removed, leaving only the lip and teeth protection mechanism to provide protection and some support for the patient's lips and teeth.

[0023] (3) The two U-shaped ends of each of the two lip and tooth protection units are connected to each other by a damping pivot, which can reduce the effort required for medical staff to insert a rigid bronchoscope. At the same time, the damping pivot, together with the two lip and tooth protection units, can provide some support for the patient's upper and lower jaws, making the process of opening the patient's upper and lower jaws more stable, and not as fast and unstable as when it is opened directly by hand.

[0024] (4) Lip and teeth protection devices can effectively protect the patient's lips and teeth when medical staff use rigid bronchoscopes. Attached Figure Description

[0025] Figure 1 This is an exploded view of the lip and teeth protection component for assisting in the insertion of a rigid bronchoscope, according to Embodiment 1 of this utility model.

[0026] Figure 2 This is a schematic diagram of the assembly of the lip and teeth protection component for the insertion of a rigid bronchoscope according to Embodiment 1 of this utility model.

[0027] Figure 3 This is a top view of the first lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation;

[0028] Figure 4 This is a side view of the first lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimensioned drawing;

[0029] Figure 5 yes Figure 1 Enlarged view of region A in the middle;

[0030] Figure 6 This is a bottom view of the second lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation;

[0031] Figure 7 This is a side view of the second lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimensioned drawing;

[0032] Figure 8 yes Figure 2 Enlarged view of region B in the middle;

[0033] Figure 9These are the front view, right view, and top view of the pressure plate mechanism of Embodiment 1 of this utility model, along with the corresponding dimension annotations.

[0034] Figure 10 This is an exploded view of the pressure plate mechanism of Embodiment 1 of this utility model, showing a cross-sectional perspective view of a portion of the tongue base pad, the protruding section, and the telescopic part.

[0035] Figure 11 yes Figure 10 Enlarged view of region C in the middle;

[0036] Figure 12 yes Figure 10 A schematic diagram showing the dimensions of the corresponding tongue base pad, protruding section, and telescopic part.

[0037] Figure 13 yes Figure 1 Enlarged view of region D in the middle;

[0038] Figure 14 This is a schematic diagram of the assembly of the lip and teeth protection component for the insertion of a rigid bronchoscope, according to Embodiment 2 of this utility model. Detailed Implementation

[0039] To make the technical means, creative features, objectives and effects of this utility model easy to understand, the following embodiments, in conjunction with the accompanying drawings, provide a detailed description of a lip and teeth protection component for assisting in the insertion of a rigid bronchoscope according to this utility model.

[0040] <Example 1>

[0041] Figure 1 This is an exploded view of the lip and teeth protection component for assisting in the insertion of a rigid bronchoscope, according to Embodiment 1 of this utility model. Figure 2 This is a schematic diagram of the assembly of the lip and teeth protection component for the insertion of a rigid bronchoscope, according to Embodiment 1 of this utility model.

[0042] like Figure 1 and Figure 2 As shown, this embodiment provides a lip and teeth protection component 100 for assisting in the insertion of a rigid bronchoscope, including a lip and teeth protection mechanism 10 and a pressure plate mechanism 20.

[0043] The lip and tooth protection mechanism 10 includes two lip and tooth protection units and two damping shafts.

[0044] The two lip and tooth protection units are referred to as the first lip and tooth protection unit and the second lip and tooth protection unit, respectively.

[0045] Therefore, in this embodiment, the sequence numbering is as follows: the lip and tooth protection mechanism 10 includes a first lip and tooth protection unit 11, two damping shafts 12, and a second lip and tooth protection unit 13.

[0046] Both lip and tooth protection units have a support plate, a tooth protector, a lip protector, and a lip and tooth isolation layer. In this embodiment, the support plate, tooth protector, lip protector, and lip and tooth isolation layer in the first lip and tooth protection unit 11 are respectively referred to as the first support plate 111, the first tooth protector 112, the first lip protector 113, and the first lip and tooth isolation layer 114; and the support plate, tooth protector, lip protector, and lip and tooth isolation layer in the second lip and tooth protection unit 13 are respectively referred to as the second support plate 131, the second tooth protector 132, the second lip protector 133, and the second lip and tooth isolation layer 134.

[0047] The first lip and tooth protection unit 11 includes a first support plate 111, a first tooth protection sleeve 112, a first lip protection sleeve 113, a first lip and tooth isolation layer 114, a first mating section 115, and a fourth mating section 116. The first lip and tooth protection unit 11 is used for the patient's lower teeth to bite on and to provide a certain degree of support, and to protect the patient's lower teeth and lower lip.

[0048] The first support plate 111 is a U-shaped rigid structure that conforms to the outline of human lower teeth. The first support plate 111 is covered with medical silicone rubber, and the patient's lower teeth abut against the medical silicone rubber on one side of the first support plate 111.

[0049] Figure 3 This is a top view of the first lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation.

[0050] like Figures 1-3 As shown, specifically in this embodiment, the middle section of the U-shaped structure of the first support plate 111 is a semi-circular structure with an inner diameter of x1 = 45mm to 50mm, and both ends are extension sections with a length of x2 = 2mm to 4mm.

[0051] The first tooth protector 112 is made of medical-grade silicone rubber. Correspondingly, the outer and inner edges of the U-shaped structure of the medical-grade silicone rubber covering the first support plate 111 are integrally formed and extend outward in a direction perpendicular to its plane, thus forming a U-shaped groove with an opening facing away from the plane of the first support plate 111. This U-shaped groove is referred to as the first occlusal groove 112a. The first occlusal groove 112a is used for the patient's lower teeth to bite into.

[0052] Figure 4 This is a side view of the first lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation.

[0053] like Figures 1-4As shown, specifically in this embodiment, the extension height of the first tooth protector 112 (the depth of the first occlusal groove 112a) is x3 = 5mm to 9mm, the thickness of the first tooth protector 112 is 2mm to 3mm, and the groove width of the first occlusal groove 112a is a gradient design of x4 = 6mm to 8mm and 9mm to 12mm. (The groove width of the first occlusal groove 112a is designed to be narrow in the middle and wide at both ends, its structure conforms to the contour design of the human lower tooth. The groove width in the middle section is 6mm to 8mm, which conforms to the width of the human central incisor, lateral incisor, and canine, and the groove width at both ends is 9mm to 12mm, which conforms to the width of the human premolar, molar, and wisdom tooth. The specific gradient design is not shown in the figure. This gradient design is a conventional operation for those skilled in the art to reasonably select based on the contour design of the human lower tooth.)

[0054] The first lip protector 113 is made of medical-grade silicone rubber. It extends integrally from the outside of the U-shaped structure formed by the medical-grade silicone rubber wrapped around the first support plate 111 and the corresponding first tooth protector 112, and forms a U-shaped groove with the outer wall of the first occlusal groove 112a. This U-shaped groove is referred to as the first lip protection groove 113a. The first lip protection groove 113a is used to place the patient's lower lip in order to protect it.

[0055] Specifically, in this embodiment, the extension height of the first lip protective sleeve 113 is x5 = 8mm to 10mm, the thickness of the first lip protective sleeve 113 is 2mm to 2.5mm, and the groove width of the first lip protective groove 113a is x6 = 10mm to 15mm.

[0056] The first labial-dental isolation layer 114 is made of medical-grade silicone rubber and extends integrally from the outer wall of the U-shaped structure of the first dental protective sleeve 112, with its extension direction being the same as the opening direction of the first occlusal groove 112a. The first labial-dental isolation layer 114 is used to separate the patient's lower lip and lower teeth to prevent the lower lip and lower teeth from directly squeezing each other. The first labial-dental isolation layer 114 and the first labial protective sleeve 113 together constitute the first lip protection groove 113a of the aforementioned U-shaped groove structure.

[0057] Specifically in this embodiment, the first lip-tooth isolation layer 114 extends to the same plane height as the first lip protective sleeve 113. Both the first lip-tooth isolation layer 114 and the first lip protective sleeve 113 are arc-shaped with an arc angle of θ3 = 90° to 100°. The thickness of the first lip-tooth isolation layer 114 is 2mm to 2.5mm.

[0058] There are two first mating segments 115, which extend from the two ends of the U-shaped structure of the first support plate 111, respectively. The two first mating segments 115 are parallel to each other and are both coplanar with the first support plate 111. Specifically, in this embodiment, the shortest distance between the two first mating segments 115 at the ends of the first support plate 111 is x7 = 59mm to 62mm, and the length of the first mating segment 115 is x8 = 3mm to 5mm.

[0059] There are two fourth mating segments 116, which extend integrally from the ends of the two first mating segments 115 respectively, and the extension direction is the same as the extension direction of the first mating segments 115. Specifically, in this embodiment, the length of the fourth mating segment 116 is x9 = 2mm to 3mm.

[0060] The fourth mating section 116 has a columnar groove 116a, and the opening direction of the columnar groove 116a faces the interior of the U-shaped structure of the first support plate 111 where it is located.

[0061] Specifically, in this embodiment, the first support plate 111, the first mating section 115, and the fourth mating section 116 are integrally molded and are all made of rigid materials. All three are covered with medical silicone rubber with a thickness of 2mm to 3mm.

[0062] Figure 5 yes Figure 1 A magnified view of region A in the middle.

[0063] like Figure 1 , Figure 2 as well as Figure 5 As shown, there are two damping shafts 12, each including a fixed end 121 and a damping rotating end 122.

[0064] The fixed ends 121 of the two damping shafts 12 are respectively fixed to the two first mating sections 115 and do not rotate relative to the first mating sections 115. Specifically, in this embodiment, the fixed ends 121 and the first mating sections 115 are made of the same material. The fixed ends 121 are welded through the medical silicone rubber on the surface of the first mating sections 115 and are fixedly connected to the main body of the first mating sections 115.

[0065] The damping rotating end 122 is coaxial with the fixed end 121 and has a certain damping rotational force between them. The damping rotating end 122 faces the U-shaped structure of the first support plate 111.

[0066] The internal structure of the damping shaft 12 in this embodiment, and how the internal structure achieves damping rotational force, refers to the existing technology of a rotatable and hovering mobile phone holder with adjustable damping angle. This is currently a publicly available technology and can be selected by those skilled in the art according to actual needs. Therefore, its specific internal structure will not be described in detail in this embodiment.

[0067] The damping rotating end 122 has a block-shaped protrusion in the radial direction, which is referred to as the matching part 122a.

[0068] The second lip and tooth protection unit 13 includes a second support plate 131, a second tooth protection sleeve 132, a second lip protection sleeve 133, a second lip and tooth isolation layer 134, a second mating section 135, and a third mating section 136. The second lip and tooth protection unit 13 is used for the patient's upper teeth to bite on and to provide a certain degree of support, and to protect the patient's upper teeth and upper lip.

[0069] The second support plate 131 is a U-shaped rigid structure that conforms to the outline of human upper teeth. The second support plate 131 is covered with medical silicone rubber, and the patient's upper teeth abut against the medical silicone rubber on one side of the second support plate 131.

[0070] Figure 6 This is a bottom view of the second lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation.

[0071] like Figure 1 , Figure 2 and Figure 6 As shown, specifically in this embodiment, the middle section of the U-shaped structure of the second support plate 131 has an inner diameter of x. 10 A semi-circular structure with a length of 50mm to 55mm at both ends. 11 =Extension segment of 2mm to 4mm.

[0072] The second tooth protector 132 is made of medical-grade silicone rubber. Correspondingly, the outer and inner edges of the U-shaped structure of the medical-grade silicone rubber covering the second support plate 131 are integrally formed and extend outward in a direction perpendicular to its plane, thus forming a U-shaped groove with an opening facing away from the plane of the second support plate 131. This U-shaped groove is referred to as the second occlusal groove 132a. The second occlusal groove 132a is used for the patient's upper teeth to bite into.

[0073] Figure 7 This is a side view of the second lip and tooth protection unit of Embodiment 1 of this utility model and its corresponding dimension annotation.

[0074] like Figure 1 , Figure 2 , Figure 6 as well as Figure 7As shown, specifically in this embodiment, the extension height of the second tooth protector 132 (the depth of the second occlusal groove 132a) is x. 12 =5mm~9mm, the thickness of the second tooth protective sleeve 132 is 2mm~3mm, and the groove width of the second occlusal groove 132a is x 13 = 6mm~9mm and 9mm~11mm. (The second occlusal groove 132a has a groove width that is narrow in the middle and wide at both ends. Its structure conforms to the contour design of human upper teeth. The groove width in the middle is 6mm~9mm, which conforms to the width of human central incisors, lateral incisors, and canines. The groove width at both ends is 9mm~11mm, which conforms to the width of human premolars, molars, and wisdom teeth. The specific gradient design is not shown in the figure. This gradient design is a conventional operation for those skilled in the art to make reasonable selections based on the contour design of human upper teeth.)

[0075] The second lip protector 133 is made of medical-grade silicone rubber. It extends integrally from the outside of the U-shaped structure formed by the medical-grade silicone rubber wrapped around the second support plate 131 and the corresponding second tooth protector 132, and forms a U-shaped groove with the outer wall of the second occlusal groove 132a. This U-shaped groove is referred to as the second lip protection groove 133a. The second lip protection groove 133a is used to place the patient's upper lip for protection.

[0076] Specifically, in this embodiment, the extension height of the second lip protective sleeve 133 is x. 14 =8mm~12mm, the thickness of the second lip protective sleeve 133 is 2mm~2.5mm, and the groove width of the second lip protective groove 133a is x. 15 =8mm~12mm.

[0077] The second labial-dental isolation layer 134 is made of medical-grade silicone rubber and extends integrally from the outer wall of the U-shaped structure of the second tooth protector 132, with its extension direction being the same as the opening direction of the second occlusal groove 132a. The second labial-dental isolation layer 134 is used to separate the patient's upper lip and upper teeth to prevent direct squeezing between the upper lip and upper teeth. The second labial-dental isolation layer 134 and the second labial protector 133 together constitute the aforementioned U-shaped groove structure of the second lip protection groove 133a.

[0078] Specifically, in this embodiment, the second lip-tooth isolation layer 134 extends to the same plane height as the second lip protective sleeve 133. Both the second lip-tooth isolation layer 134 and the second lip protective sleeve 133 are arc-shaped with an arc angle of θ4 = 100° to 110°. The thickness of the second lip-tooth isolation layer 134 is 2mm to 2.5mm.

[0079] There are two second mating segments 135, which extend from the two ends of the U-shaped structure of the second support plate 131, respectively. The two second mating segments 135 are parallel to each other and both are coplanar with the second support plate 131. Specifically, in this embodiment, the length of the second mating segment 135 is x... 16 =3mm~5mm.

[0080] There are two third mating segments 136, which extend from the end sides of the two second mating segments 135 respectively, and the extension direction is away from the opening direction of the second engagement groove 132a.

[0081] Specifically, in this embodiment, the third mating segment 136 is x in length. 17 =2mm~3mm.

[0082] The farthest distance between the two second mating sections 135 at the end of the second support plate 131 is the same as the shortest distance between the two first mating sections 115, both being x7 = 59mm to 62mm. The farthest distance between the two third mating sections 136 is also x7 = 59mm to 62mm, so that the two third mating sections 136 on the second support plate 131 can be clamped by the two first mating sections 115 on the first support plate 111.

[0083] Figure 8 yes Figure 2 A magnified view of region B in the middle.

[0084] like Figure 1 , Figure 2 , Figure 5 as well as Figure 8 As shown, the third mating section 136 has a through hole or channel into which the damping rotating end 122 and its matching part 122a are correspondingly inserted, and this through hole or channel is referred to as the insertion part 136a. When the two third mating sections 136 on the second support plate 131 are clamped by the two first mating sections 115 on the first support plate 111, the damping rotating end 122 of the damping shaft 12 and its matching part 122a are correspondingly inserted into the insertion part 136a, thereby enabling a detachable rotational connection with damping rotational force between the first support plate 111 and the second support plate 131 through the damping shaft 12.

[0085] Specifically, in this embodiment, the second support plate 131, the second mating section 135, and the third mating section 136 are integrally molded and are all made of rigid materials. All three are covered with medical silicone rubber with a thickness of 2mm to 3mm.

[0086] like Figure 1 and Figure 2 As shown, the pressure plate mechanism 20 includes a tongue base pad unit 21 and a throat pad unit 22.

[0087] The tongue base pad unit 21 includes a tongue base pad 211 and two protruding sections 212.

[0088] Figure 9 These are the front view, right view, and top view of the pressure plate mechanism of Embodiment 1 of this utility model, along with the corresponding dimension annotations.

[0089] like Figure 1 , Figure 2 as well as Figure 9 As shown, the tongue base pad 211 is a trapezoidal flat plate, and the upper base of the trapezoidal flat plate has a length x. 18 =25mm~30mm, the length of the lower base is the same as the shortest distance between the two first mating segments 115, both being x7=59mm~62mm, and the height is x 19 =1cm~2cm, and the thickness of the tongue base pad 211 is 2mm~3mm.

[0090] Figure 10 This is a cross-sectional perspective view of a portion of the tongue base pad, the protruding section, and the telescopic part of the assembly drawing of the pressure plate mechanism of Embodiment 1 of this utility model. Figure 11 yes Figure 10 A magnified view of region C in the middle.

[0091] like Figure 1 , Figure 2 , Figure 9 , Figure 10 as well as Figure 11 As shown, the side of the tongue base pad 211 where the upper bottom edge is located has a recessed embedding groove 211a. The two sides of the opening of the embedding groove 211a have a pair of opposing anti-drop protrusions 211b. The end of the anti-drop protrusion 211b in the extending direction has an adjusting tooth 211c. The tip of the adjusting tooth 211c is inclined towards the inside of the embedding groove 211a.

[0092] Figure 12 yes Figure 10 The diagram shows the dimensions of the corresponding tongue base pad, protruding section, and telescopic part.

[0093] like Figure 1 , Figure 2 , Figure 9 , Figure 10 , Figure 11 as well as Figure 12 As shown, specifically in this embodiment, the depth of the embedded groove 211a is x. 20 =10mm~20mm, width is x 21 =25mm~30mm, thickness is 2mm~3mm, the distance between the two anti-falling protrusions 211b is x 22 =21mm~26mm.

[0094] Two protruding segments 212 are provided at both ends of the lower bottom edge of the tongue base pad 211 and are coplanar with the tongue base pad 211. Specifically, in this embodiment, the extension length of the protruding segments 212 is x. 23 =3mm~5mm.

[0095] The protruding section 212 has a columnar protrusion 212a facing away from the tongue root pad 211. The columnar protrusion 212a is matched and embedded in the columnar groove 116a, so that after the two columnar protrusions 212a are correspondingly embedded in the two columnar grooves 116a, the entire tongue root pad unit 21 and the pressure plate mechanism 20 therein are locked between the two fourth mating sections 116 of the first lip and tooth protection unit 11 and can rotate with the first lip and tooth protection unit 11, and its rotation direction is perpendicular to the plane where the first lip and tooth protection unit 11 and the second lip and tooth protection unit 13 are located.

[0096] The tongue base pad 211 and the raised section 212 are integrally molded and both are covered with 2mm to 3mm thick medical-grade silicone rubber. The tongue base pad 211 and the raised section 212 are made of a rigid material with a certain degree of toughness.

[0097] The throat pad unit 22 includes a telescopic part 221 and a pad part 222.

[0098] Figure 13 yes Figure 1 A magnified view of region D in the middle.

[0099] like Figure 1 , Figure 2 , Figure 5 , Figure 8 , Figures 10-13 As shown, the telescopic part 221 is a T-shaped flat plate, and the width of the T-shaped head is the same as the width of the embedded groove 211a, both being x. 21 =25mm~30mm, the width of its T-shaped main body is the same as the distance between the two anti-falling protrusions 211b, both being x. 22 =21mm~26mm, the telescopic part 221 is telescopically disposed in the embedding groove 211a, the thickness of the telescopic part 221 is the same as the thickness of the embedding groove 211a and is 2mm~3mm, and the extension length of the telescopic part 221 is the same as the depth of the embedding groove 211a and is x. 20 =10mm~20mm.

[0100] The T-shaped body of the telescopic part 221 has a groove on each side along its length. The groove contains a row of matching teeth 221a, which engage with the adjusting teeth 211c. The tip of the matching teeth 221a faces away from the groove 211a.

[0101] The pad portion 222 is an arc-shaped curved plate that matches the curvature of the patient's larynx, and its width gradually narrows along the extension direction of the arc. The end face of the arc-shaped curved plate of the pad portion 222 is a smooth flat plate. Since the pad portion 222 extends deep into the patient's larynx, its edges are rounded to reduce damage to the patient's larynx. Specifically, in this embodiment, the telescopic portion 221 and the pad portion 222 are made of rigid material and are externally covered with 2mm to 3mm thick medical-grade silicone rubber.

[0102] Specifically, in this embodiment, the extension length of the pad portion 222 is x. 24 =4cm~5cm, arc θ2=90°~120°, thickness 1mm~2mm, width at the connection between pad part 222 and telescopic part 221 is 25mm~30mm, the end of pad part 222 has a smooth flat plate with an elliptical tip arc structure, and the front diameter of the tip arc structure is x 25 =10mm~15mm, the tip arc angle of the tip arc structure is θ1=45°~50°.

[0103] The process of using the lip and teeth protection component 100 for assisting in the insertion of a rigid bronchoscope:

[0104] S10, take the assembled auxiliary rigid bronchoscope and insert the lip and teeth protection component 100. After the medical staff visually observes the patient's oral cavity and estimates the approximate depth of the oral cavity, they pull the pad part 222 so that the telescopic part 221 is displaced a certain distance from the embedded groove 211a, so that the length of the tongue root pad unit 21 and the telescopic part 221 extending out of the embedded groove 211a is approximately matched.

[0105] In this embodiment and in this step, the adjusting teeth 211c in the embedded groove 211a and the matching teeth 221a of the telescopic part 221 are mutually matched and movable. A certain amount of force is required to pull the pad part 222 to pull the telescopic part 221 out in one direction and it cannot be retracted. Therefore, there is no need to worry that the telescopic part 221 will be stretched out of the embedded groove 211a again due to its own weight or a small external force during subsequent use, which will affect the insertion of the rigid bronchoscope. In addition, this product needs to be inserted into the patient's oral cavity and larynx. It is a disposable design and there is no need to consider the problem of the telescopic part 221 retracting into the embedded groove 211a.

[0106] S20, the lip and teeth protection component 100, whose length was adjusted in step S10, is inserted into the patient's oral cavity and larynx. The first lip and teeth protection unit 11 and the second lip and teeth protection unit 13 cooperate with each other for the patient to bite on, the tongue base pad unit 21 and the telescopic part 221 are located on the patient's tongue base, and the pad part 222 is located on the patient's larynx.

[0107] S30, the medical staff manually manipulates the first labial and dental protection unit 11 and the second labial and dental protection unit 13 to rotate them relative to each other, thereby opening the patient's mouth wider while providing some protection for the patient's upper and lower teeth and lips. During this process, the damping shaft 12 between the first labial and dental protection unit 11 and the second labial and dental protection unit 13 can provide some damping support.

[0108] In this embodiment and in this step, there is no need for absolute support between the first lip and tooth protection unit 11 and the second lip and tooth protection unit 13. Only the damping shaft 12 needs to provide damping support, so that medical staff do not need to use excessive force to manually keep the patient's upper and lower jaws open. (The main function of the first lip and tooth protection unit 11 and the second lip and tooth protection unit 13 is to protect the patient's teeth and lips.)

[0109] S40, medical staff insert a rigid bronchoscope into the patient's larynx through the mouth for monitoring. During insertion, the rigid bronchoscope is slowly inserted into the patient's mouth and larynx along the direction of the tongue base pad unit 21, the telescopic part 221, and the pad part 222. During insertion, it abuts against the tongue base pad unit 21, the telescopic part 221, and the pad part 222, so that the tongue base pad unit 21, the telescopic part 221, and the pad part 222 press against the patient's tongue base and larynx (increasing the contact area during insertion). This avoids compression injury caused by direct insertion of the rigid bronchoscope into the patient's larynx and prevents the patient's physiological movements of the tongue base from obstructing the direct insertion of the rigid bronchoscope.

[0110] S50, the medical staff inserts their hand into the patient's mouth, pinches the two protruding segments 212 so that the two protruding segments 212 move closer to each other and shift, so that the columnar protrusion 212a on it disengages from the columnar groove 116a, thereby releasing the connection between the pressure plate mechanism 20 and the lip and teeth protection mechanism 10, and then removes and discards the pressure plate mechanism 20.

[0111] S60, for subsequent rigid bronchoscopy monitoring.

[0112] In this embodiment and in this step, after removing the pressure plate mechanism 20, medical staff no longer need to manually maintain the opening angle between the first lip and tooth protection unit 11 and the second lip and tooth protection unit 13. This is because a portion of the rigid bronchoscope protrudes from the patient's mouth, and this rigid structure can prevent the patient's mouth from closing. Furthermore, the corresponding support plates, tooth protectors, lip protectors, and lip and tooth isolation layers on the first lip and tooth protection unit 11 and the second lip and tooth protection unit 13 provide appropriate support or protection, preventing the rigid bronchoscope from severely squeezing or compressing the patient's lips and teeth.

[0113] S70, after the surgery, remove the rigid bronchoscope monitoring and lip and teeth protection device 10.

[0114] <Example 2>

[0115] Figure 14 This is a schematic diagram of the assembly of the lip and teeth protection component for the insertion of a rigid bronchoscope, according to Embodiment 2 of this utility model.

[0116] like Figure 14 As shown, this embodiment provides a lip and teeth protection component 101 for assisting in the insertion of a rigid bronchoscope, including a lip and teeth protection mechanism 10 and a pressure plate mechanism 20'.

[0117] The lip and tooth protection mechanism 10 in this embodiment has the same structure, size and material as the lip and tooth protection mechanism 10 in Embodiment 1, and will not be repeated here. The connection method and connection relationship between the lip and tooth protection mechanism 10 and the pressure plate mechanism 20' in this embodiment are the same as those between the lip and tooth protection mechanism 10 and the pressure plate mechanism 20 in Embodiment 1, and will not be repeated here.

[0118] The pressure plate mechanism 20' includes a tongue base pad unit 21' and a throat pad unit 22'. The pressure plate mechanism 20' in this embodiment is generally similar in structure and size to the pressure plate mechanism 20 in embodiment 1. The only difference is that the tongue base pad unit 21' and the throat pad unit 22' in this embodiment are fixedly connected and are designed to be non-extendable.

[0119] The use of the lip and teeth protection component 101 for assisting rigid bronchoscope insertion in this embodiment is largely similar to that in Embodiment 1. The only difference is that the steps in S10, such as observing the patient's oral cavity depth and adjusting the stretching length of the tongue base pad unit 21' and the laryngeal pad unit 22', are not required. (The tongue base pad unit 21' and the laryngeal pad unit 22' are fixedly connected. Although this may not be very suitable for patients with different oral cavity depths, it can still achieve the function of assisting rigid bronchoscope insertion.)

[0120] The role and effect of the embodiments

[0121] According to the embodiment provided, a lip and teeth protection component for assisting the insertion of a rigid bronchoscope includes a lip and teeth protection mechanism and a pressure plate mechanism. The lip and teeth protection mechanism includes two lip and teeth protection units and two damping shafts. The lip and teeth protection units are generally U-shaped, and their outlines roughly match the outlines of the patient's upper or lower teeth so as to allow the patient's upper or lower teeth to bite. The two U-shaped ends of each of the two lip and teeth protection units are rotatably connected to each other through the damping shafts. The pressure plate mechanism is generally curved, and one side of its extension length direction is detachably rotatably connected to the two ends of the U-shaped structure of the lip and teeth protection units. The pressure plate mechanism is used to assist the insertion of the rigid bronchoscope into the patient's larynx and presses the patient's tongue root and larynx with the force of the rigid bronchoscope abutting against it.

[0122] Therefore, the lip and teeth protection component for assisting in the insertion of a rigid bronchoscope in this embodiment has the following beneficial effects:

[0123] (1) The lip and teeth protection mechanism and the pressure plate mechanism can press the patient's tongue root and larynx with the force of the rigid bronchoscope while assisting in the insertion of the rigid bronchoscope, thereby exposing the patient's glottis. This makes the insertion of the rigid bronchoscope into the patient's larynx smoother and reduces the mucosal damage to the patient's oral cavity and larynx caused by direct insertion of the rigid bronchoscope to a certain extent.

[0124] (2) The rotatable and detachable design between the lip and teeth protection mechanism and the pressure plate mechanism can increase the freedom of the whole device. Different sizes of pressure plate mechanisms can be replaced as needed to adapt to the depth and curvature of the oral cavity to the larynx of different patients. After the rigid bronchoscope is inserted, the pressure plate mechanism can be manually removed, leaving only the lip and teeth protection mechanism to provide protection and some support for the patient's lips and teeth.

[0125] (3) The two U-shaped ends of each of the two lip and tooth protection units are connected to each other by a damping pivot, which can reduce the effort required for medical staff to insert a rigid bronchoscope. At the same time, the damping pivot, together with the two lip and tooth protection units, can provide some support for the patient's upper and lower jaws, making the process of opening the patient's upper and lower jaws more stable, and not as fast and unstable as when it is opened directly by hand.

[0126] (4) Lip and teeth protection devices can effectively protect the patient's lips and teeth when medical staff use rigid bronchoscopes.

[0127] Furthermore, the lip and tooth protection unit includes: a support plate, a U-shaped rigid structure conforming to the contours of human upper or lower teeth, the support plate being covered with medical-grade silicone rubber. The patient's upper or lower teeth abut against the medical-grade silicone rubber on one side of the support plate. The ends of the U-shaped structures of the two support plates are connected by damping pivots for a rotatable suspension. A tooth protector, also made of medical-grade silicone rubber, extends integrally from the outer and inner edges of the U-shaped structure of the medical-grade silicone rubber covering the support plate in a direction perpendicular to its plane, forming an opening opposite to the plane of the support plate. This U-shaped groove is referred to as the occlusal groove, which is used for the patient's upper or lower teeth to bite into. This design allows the lip and tooth protection unit to provide some protection for the patient's teeth during manual opening of the patient's upper and lower jaws by medical staff and during subsequent surgery, reducing damage to the patient's teeth during the procedure.

[0128] Furthermore, the lip and tooth protection unit also includes a lip protector made of medical-grade silicone rubber. The lip protector extends integrally from the outer side of the U-shaped structure formed by the medical-grade silicone rubber wrapped around the support plate and the corresponding tooth protector, and fits with the outer wall of the corresponding occlusal groove to form a U-shaped groove. This U-shaped groove is referred to as the lip protection groove, and it is used to place the user's upper or lower lip for protection. This design allows the lip and tooth protection unit to provide some protection for the patient's lips during manual opening of the patient's upper and lower jaws by medical staff and during subsequent surgery, reducing damage to the patient's lips during the procedure.

[0129] Furthermore, the lip and tooth protection unit also includes a lip and tooth isolation layer. This layer extends integrally from the outer wall of the U-shaped structure of the dental protector, with its extension direction aligned with the opening direction of the occlusal groove. The lip and tooth isolation layer separates the patient's lips and teeth, preventing direct pressure between them. Together with the lip protector, the lip and tooth isolation layer forms a U-shaped groove for lip protection. This design allows the lip and tooth protection unit to provide some protection between the patient's lips and teeth during manual manipulation of the jaw by medical staff and subsequent surgical procedures, reducing pressure sores caused by mutual pressure between the lips and teeth during the operation.

[0130] Further, the two labial and dental protection units are designated as the first labial and dental protection unit and the second labial and dental protection unit, respectively. One of the first labial and dental protection units is used to support the patient's upper teeth during biting, and the other is used to support the patient's lower teeth during biting. The two ends of the U-shaped structure of the first labial and dental protection unit each extend with a first mating segment. The two first mating segments are parallel to each other and coplanar with the first labial and dental protection unit. The two ends of the U-shaped structure of the second labial and dental protection unit each extend with a second mating segment and a third mating segment. The two second mating segments are parallel to each other and coplanar with the second labial and dental protection unit. The units are coplanar, with two third mating segments integrally formed and extending from the two second mating segments respectively, their extension directions facing away from the side of the second labial and dental protection unit that allows the patient's upper or lower teeth to bite. The first labial and dental protection unit holds the two third mating segments on the second labial and dental protection unit through its two first mating segments, or the first labial and dental protection unit is held by the two third mating segments on the second labial and dental protection unit through its two first mating segments. The first mating segments and their adjacent third mating segments can achieve suspended relative rotation through a damping pivot, and the plane formed by the rotation direction is perpendicular to the plane of the labial and dental protection unit. This design makes the structure more stable when the two labial and dental protection units are manually manipulated to generate relative rotation.

[0131] Furthermore, the pressure plate mechanism includes an interconnected tongue base pad unit and a laryngeal pad unit. The tongue base pad unit is a flat plate, while the laryngeal pad unit is an arc-shaped curved plate that matches the curvature of the patient's larynx, with its width gradually narrowing along the extension direction of the arc. The end face of the arc-shaped curved plate of the laryngeal pad unit is a smooth elliptical tip arc structure. The first or second mating section extends along its own length with an integrally formed fourth mating section. The fourth mating section has a columnar groove, and the opening direction of the columnar groove faces the U-shaped structure of the lip and teeth protection unit in which it is located. The two ends on one side of the tongue base pad unit have lateral protrusions. The protrusions are coplanar with the tongue base pad unit and have columnar protrusions that face away from the tongue base pad unit. The columnar protrusions are matched and embedded in the columnar grooves. The protrusions are made of a hard material with a certain degree of toughness and are covered with medical silicone rubber. The columnar protrusions are fixedly connected to the protrusions. This design allows for a detachable rotatable connection between the pressure plate mechanism and the lip and teeth protection mechanism. Furthermore, the rounded end face of the curved plate of the laryngeal pad unit better adapts to the patient's laryngeal structure, reducing damage to the patient's larynx.

[0132] Furthermore, the tongue base pad unit and the throat pad unit are telescopic designs. The tongue base pad unit has a recessed embedding groove on the side opposite to the protruding section. There is a pair of anti-drop protrusions on both sides of the opening of the embedding groove. The extension end of the anti-drop protrusion has an adjusting tooth. The throat pad unit includes a telescopic part and a pad part. The telescopic part is a T-shaped flat plate. The width of the head of the T-shape is the same as the width of the embedding groove. The width of the body of the T-shape is the same as the distance between the two anti-drop protrusions. The telescopic part is telescopically set in the embedding groove. Two opposite sides of the telescopic part have a groove along the length direction. The corresponding groove has a row of matching teeth inside. The matching teeth and the adjusting teeth match and engage. The pad part is connected to the T-shaped bottom of the telescopic part. With this design, medical staff can roughly estimate the depth of the patient's oral cavity by visual inspection and then adjust the extension length of the telescopic part accordingly to work in conjunction with the tongue base pad unit. This allows the lip and teeth protection component that assists in the insertion of a rigid bronchoscope to be adapted to patients with different oral cavity depths. Furthermore, the anti-dislodgement protrusion and the T-shaped telescopic part design and cooperation can effectively prevent the laryngeal pad unit and the tongue base pad unit from detaching from each other when overstretched.

[0133] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A lip-teeth protection assembly to assist rigid bronchoscope insertion, characterized in that, Including lip and tooth protection mechanism and pressure plate mechanism, The lip and tooth protection mechanism includes two lip and tooth protection units and two damping shafts. The lip and tooth protection units are generally U-shaped, and their outlines roughly match the outlines of the patient's upper or lower teeth to allow for occlusion. The two U-shaped ends of each of the two lip and tooth protection units are rotatably connected to each other via the damping shafts, allowing for hovering. The pressure plate mechanism is curved in an arc shape, and one side of its extended length direction is detachably and rotatably connected to the two ends of the U-shaped structure of the lip and teeth protection unit. The pressure plate mechanism is used to assist the rigid bronchoscope in being inserted into the patient's larynx and to press the patient's tongue base and larynx with the force of the rigid bronchoscope against it.

2. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 1, characterized in that: wherein The lip and tooth protection unit includes: The support plate is a U-shaped rigid structure that conforms to the contour of human upper or lower teeth. The support plate is covered with medical-grade silicone rubber. The patient's upper or lower teeth abut against the medical-grade silicone rubber on one side of the support plate. The ends of the U-shaped structures of the two support plates are rotatably connected via the damping pivot. The dental protector is made of medical-grade silicone rubber. Correspondingly, the outer and inner edges of the U-shaped structure of the medical-grade silicone rubber covering the outside of the support plate are integrally formed and extend outward in a direction perpendicular to its plane to form an opening that is opposite to the plane of the support plate. This U-shaped groove is referred to as the occlusal groove, which is used for the patient's upper or lower teeth to bite into.

3. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 2, characterized in that: wherein The lip and teeth protection unit also includes a lip protective sleeve. The lip protector is made of medical-grade silicone rubber. It extends integrally from the outside of the U-shaped structure formed by the medical-grade silicone rubber wrapped around the outside of the support plate and the corresponding dental protector. It cooperates with the outer wall of the corresponding occlusal groove to form a U-shaped groove structure. This U-shaped groove is referred to as the lip protection groove. The lip protection groove is used to place the user's upper or lower lip in it for protection.

4. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 3, characterized in that: wherein The lip and tooth protection unit also includes a lip and tooth isolation layer. The labiodental separation layer extends integrally from the outer wall of the U-shaped structure of the dental protective sleeve, and its extension direction is the same as the opening direction of the occlusal groove. The labiodental separation layer is used to separate the patient's lips and teeth, thereby preventing direct pressure between the lips and teeth. The lip-tooth isolation layer and the lip protective sleeve together form the lip protective groove with a U-shaped groove structure.

5. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 4, characterized in that: wherein The inner diameter of the arc segment of the U-shaped structure of the lip and tooth protection unit is 45mm to 55mm. The width of the interlocking groove is 6mm to 12mm. The width of the lip protection groove is 8mm to 15mm. The thickness of the medical-grade silicone rubber covering the support plate is 2mm to 3mm. The thickness of the dental protective sleeve made of medical-grade silicone rubber is 2mm to 3mm. The thickness of the lip protector and the lip-teeth separator made of medical-grade silicone rubber is 2.5mm to 3mm.

6. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 1, characterized in that: wherein The two labial and dental protection units are designated as the first labial and dental protection unit and the second labial and dental protection unit, respectively. One of the first labial and dental protection units and the second labial and dental protection unit is used to support the patient's upper teeth when biting, and the other is used to support the patient's lower teeth when biting. The first lip and tooth protection unit has two mating sections extending from its two ends of the U-shaped structure. The two mating sections are parallel to each other and are both coplanar with the first lip and tooth protection unit. The two ends of the U-shaped structure of the second labial and dental protection unit each extend with a second mating segment and a third mating segment. The two second mating segments are parallel to each other and are coplanar with the second labial and dental protection unit. The two third mating segments are integrally formed and extend from the two second mating segments respectively, with their extension direction opposite to the side of the second labial and dental protection unit for the patient's upper or lower teeth to bite. The first lip and tooth protection unit clamps the two third mating segments on the second lip and tooth protection unit through its two first mating segments, or the first lip and tooth protection unit is clamped by the two third mating segments on the second lip and tooth protection unit through its two first mating segments. The first mating section and its adjacent third mating section can achieve hovering relative rotation through the damping shaft, and the plane formed by the rotation direction is perpendicular to the plane where the lip and tooth protection unit is located.

7. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 6, characterized in that: wherein The damping shaft includes a fixed end and a damping rotating end. The fixed end and the damping rotating end are coaxial and can rotate and hover with damping force relative to each other. The damping rotating end has a block-shaped protrusion in the radial direction, which is referred to as the matching part. One of the first mating section and the adjacent third mating section has a through hole or channel into which the damping rotating end and its matching part can be correspondingly embedded, and the through hole or channel is referred to as the embedding part. The first mating segment and the other of the adjacent third mating segments are fixedly connected to the fixed end and do not rotate relative to each other.

8. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 6, characterized in that: wherein, The pressure plate mechanism includes an interconnected tongue base pad unit and a laryngeal pad unit. The tongue base pad unit is a flat plate, and the laryngeal pad unit is an arc-shaped curved plate that matches the curvature of the patient's larynx, with its width gradually narrowing along the extension direction of the arc. The end face of the arc-shaped curved plate of the laryngeal pad unit has a smooth elliptical tip arc structure. The first or second mating segment extends along its length by an integrally formed fourth mating segment. The fourth mating segment has a columnar groove, and the opening of the columnar groove faces into the U-shaped structure of the lip and tooth protection unit. The tongue base pad unit has two lateral protrusions at one end of its side. These protrusions are coplanar with the tongue base pad unit. Each protrusion has a columnar protrusion that faces away from the tongue base pad unit and is fitted into a columnar groove. The protruding section is made of a hard material with a certain degree of toughness and is covered with medical silicone rubber. The columnar protrusion is fixedly connected to the protruding section.

9. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 8, characterized in that: wherein The tongue base pad unit and the throat pad unit are retractable. The tongue base pad unit has a recessed embedding groove on the side opposite to the protruding section. The opening of the embedding groove has a pair of opposing anti-dislodgement protrusions on both sides, and the extending ends of the anti-dislodgement protrusions have adjusting teeth. The throat pad unit includes a telescopic part and a pad part. The telescopic part is a T-shaped flat plate. The width of the head of the T-shape is the same as the width of the embedded groove, and the width of the body of the T-shape is the same as the distance between the two anti-detachment protrusions. The telescopic part is telescopically disposed in the embedded groove. Two opposite sides of the telescopic part each have a groove along the length direction. The corresponding grooves have a row of matching teeth inside, which match and engage with the adjusting teeth. The pad portion is connected to the T-shaped bottom of the telescopic portion.

10. The lip and teeth protection assembly for assisting in the insertion of a rigid bronchoscope according to claim 9, characterized in that: wherein The first mating section, the second mating section, the third mating section, and the fourth mating section are all made of a rigid material externally coated with 2mm to 3mm thick medical-grade silicone rubber. The thickness of the tongue base pad unit is 2mm to 3mm, and the tongue base pad unit as a whole is a trapezoidal structure with an upper base length of 25mm to 30mm, a lower base length of 59mm to 62mm, and a height of 1cm to 2cm. The depth of the embedded groove is 10mm-20mm, the width is 25mm-30mm, and the thickness is 2mm-3mm. The distance between the two anti-detachment protrusions is 21mm-26mm. The width of the T-shaped head of the telescopic part is the same as the width of the embedded groove, the width of the T-shaped body of the telescopic part is the same as the distance between the two anti-detachment protrusions, and the thickness of the telescopic part is the same as the thickness of the embedded groove. The extension length of the pad portion is 4cm to 5cm, the arc is 90° to 120°, and the thickness is 1mm to 2mm. The width at the connection between the pad portion and the telescopic portion is 25mm to 30mm. The front diameter of the smooth elliptical tip arc structure at the end of the pad portion is 10mm to 15mm, and the tip arc angle of the tip arc structure is θ1 = 45° to 50°.

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