Oral cavity auxiliary fixing device for intubation anesthesia

Abstract

The invention relates to the technical field of clinical medical engineering, in particular to an oral cavity auxiliary fixing device for intubation anesthesia. Comprising upper supporting frames which are symmetrically distributed, a first mounting block is arranged between the upper supporting frames which are symmetrically distributed, the first mounting block is fixedly connected with an upper extrusion frame, a first pressing plate is slidably connected into the upper extrusion frame and used for extruding maxillary teeth of a patient, and the upper supporting frames are rotatably connected with a lower supporting frame; a second mounting block is arranged between the symmetrically-distributed lower supporting frames, a lower extrusion frame is fixedly connected to the second mounting block, a second pressing plate is slidably connected into the lower extrusion frame and used for extruding lower jaw teeth of a patient, and the symmetrically-distributed upper supporting frames are jointly provided with a fixing belt. By rotating the lower supporting frame, the first pressing plate and the second pressing plate move back to back, maxillary teeth and mandibular teeth of a patient are squeezed respectively, the oral cavity of the patient is gradually opened, and accurate feeding of a catheter is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clinical medicine engineering, and particularly relates to an oral auxiliary fixing device for intubation anesthesia. BACKGROUND

[0002] In the fields of clinical anesthesia, emergency rescue and intensive care, tracheal intubation is the core operation for establishing an artificial airway and ensuring the ventilation function of a patient. Successful intubation operation depends on the fact that the operator can clearly observe the glottis and other laryngeal structures, and the prerequisite for this is that the patient's mouth must be fully opened and an approximately straight channel from the mouth to the larynx must be formed.

[0003] At present, in the conventional tracheal intubation operation, the opening of the patient's mouth and the maintenance of the open state mainly depend on the laryngoscope. During the operation, the laryngoscope blade is inserted into the patient's mouth, the tongue root and epiglottis are lifted, and the mandible and tongue body are moved forward and upward as a whole, so as to open the mouth and expose the glottis. However, if the operation is not proper, the laryngoscope blade is easy to exert excessive lever force on the upper front teeth as a fulcrum, thereby causing the fracture, loosening or falling of the upper front teeth. At the same time, this operation mode largely depends on the strength and skill of the operator's hands. When dealing with a difficult airway, the operator needs to continuously exert a large force, which is easy to cause hand fatigue and tremor, thereby affecting the stability of the visual field and ultimately affecting the accurate insertion of the catheter. SUMMARY

[0004] In order to overcome the shortcomings presented in the background art, the present application provides an oral auxiliary fixing device for intubation anesthesia.

[0005] The technical implementation scheme of the present application is: an oral auxiliary fixing device for intubation anesthesia, comprising symmetrically distributed upper support frames, a first mounting block is arranged between the symmetrically distributed upper support frames, an upper extrusion frame is fixedly connected to the first mounting block, a pressing plate one is slidably connected in the upper extrusion frame, the pressing plate one is used for extruding the upper jaw teeth of a patient, a lower support frame is rotatably connected to the upper support frame, a second mounting block is arranged between the symmetrically distributed lower support frames, a lower extrusion frame is fixedly connected to the second mounting block, a pressing plate two is slidably connected in the lower extrusion frame, the pressing plate two is used for extruding the lower jaw teeth of a patient, a fixing belt is commonly arranged on the symmetrically distributed upper support frames, a buffer positioning mechanism is commonly arranged on the upper extrusion frame and the lower extrusion frame, and the buffer positioning mechanism is used for buffering the extrusion force borne by the upper extrusion frame and the lower extrusion frame.

[0006] Further, the buffer positioning mechanism comprises a first air bag fixed in the upper extrusion frame, the first air bag is in contact with the second pressing plate, the second air bag is fixed in the lower extrusion frame, and the second air bag is in contact with the third pressing plate.

[0007] Further, the limiting assembly comprises a first pipe network in communication with the first air bag, a limiting air bag is fixed in the upper support frame, the second air bag and the limiting air bag are in communication with the first pipe network, a limiting tooth plate is slidably connected in the upper support frame, the limiting air bag is fixed with the adjacent limiting tooth plate, a limiting gear is arranged on the upper support frame, the limiting tooth plate is used for limiting the adjacent limiting gear, and the lower support frame is provided with teeth evenly distributed and in transmission connection with the adjacent limiting gear.

[0008] Further, the adjusting mechanism is arranged on the first mounting block and used for adjusting the distance between the symmetrically distributed upper support frames, the adjusting mechanism comprises a first cover plate arranged on the first mounting block, a mounting frame is fixed to the first cover plate, a knob is rotatably connected to the first cover plate, a driving gear is fixed to the knob, driving racks are fixed to the symmetrically distributed upper support frames, the driving racks are slidably connected with the mounting frame, the driving racks are engaged with the driving gear, and all the driving racks are respectively located on both sides of the driving gear, a mounting shell is fixed to the second mounting block, the lower support frame is slidably connected with the mounting shell, and a second cover plate is fixed to the mounting shell.

[0009] Further, the first cover plate is slidably connected with a limiting piece, and the limiting piece is used for limiting the knob.

[0010] Further, the second pipe network is fixedly connected and in communication with the first air bag, the second pipe network is in communication with the second air bag, the second pipe network is fixedly connected and in communication with a gas supply member, and the gas supply member is used for changing the expansion degree of the first air bag and the second air bag.

[0011] Further, the tongue depressor is hingedly connected to the lower extrusion frame, and the second pressing plate is in contact with the tongue depressor.

[0012] Further, the first cover plate and the second cover plate are slidably connected with clamping pieces, the clamping pieces are fixedly connected with fixing shells, and the upper support frame is rotatably and slidably connected with the adjacent limiting gear.

[0013] Further, the clamping piece is slidably connected with a first rod and a second rod, the first rod and the second rod are slidably connected with the adjacent fixed shell, the clamping piece is hingedly connected with a hinged rod, the first rod and the second rod are rotatably and slidably connected with the adjacent hinged rod, and a limiting plate is fixed between the first cover plate and the mounting frame, the limiting plate and the mounting shell are used for limiting the two first rods respectively.

[0014] Further, the clamping piece is slidably connected with a first rod and a second rod, the first rod and the second rod are slidably connected with the adjacent fixed shell, the clamping piece is hingedly connected with a hinged rod, the first rod and the second rod are rotatably and slidably connected with the adjacent hinged rod, and a limiting plate is fixed between the first cover plate and the mounting frame, the limiting plate and the mounting shell are used for limiting the two first rods respectively.

[0015] Compared with the prior art, the present application has the following advantages: by rotating the lower support frame, the back of the pressing plate one and the pressing plate two are moved away, and the upper jaw teeth and the lower jaw teeth of the patient are extruded respectively, so that the mouth of the patient is gradually opened, and the precise insertion of the catheter is ensured.

[0016] The first air bag and the second air bag are used for buffering the extrusion force of the pressing plate one and the pressing plate two respectively, so as to avoid applying hard extrusion force to the teeth of the patient, and the limiting air bag is used for driving the limiting tooth plate to move, so as to limit the lower support frame, so that when the mouth of the patient is about to be opened to the limit, the pushing force applied to the teeth of the patient is stopped, and the related bones at the teeth of the patient are prevented from being damaged due to excessive force.

[0017] The first air bag and the second air bag are inflated or deflated at random by the gas supply element, the first air bag and the second air bag are inflated (deflated) synchronously, the opening range of the mouth of the patient is changed, the stress points of the internal tissues of the mouth of the patient and various joints are changed, and the same position is prevented from being continuously pressed. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application; Figure 2 It is a bottom view of the three-dimensional structure of the present application; Figure 3 It is a schematic diagram of the three-dimensional structure of the upper support frame and the lower support frame of the present application; Figure 4 It is a schematic diagram of the three-dimensional structure of the upper support frame and the first mounting block of the present application; Figure 5 It is an exploded view of the three-dimensional structure of the parts at the upper support frame of the present application; Figure 6 It is a schematic diagram of the three-dimensional structure of the lower support frame and the second mounting block of the present application; Figure 7 It is an exploded view of the three-dimensional structure of the lower support frame of the present application; Figure 8 The schematic diagram of the three-dimensional structure of the tongue depressor of the present application; Figure 9 The schematic diagram of the three-dimensional structure of the first air bag and the second air bag of the present application; Figure 10 The schematic diagram of the three-dimensional structure of the limiting air bag and the limiting tooth plate of the present application; Figure 11 The schematic diagram of the three-dimensional structure of the clamping member and the fixing shell of the present application; Figure 12 The schematic diagram of the three-dimensional structure of the clamping member of the present application.

[0019] The marks of the components in the drawings are as follows: 1-upper support frame, 2-first mounting block, 3-upper extrusion frame, 4-lower support frame, 5-second mounting block, 6-lower extrusion frame, 7-fixing belt, 21-first air bag, 22-pressing plate one, 23-second air bag, 24-pressing plate two, 31-first pipe network, 32-limiting air bag, 33-limiting tooth plate, 34-limiting gear, 41-first cover plate, 42-mounting frame, 43-knob, 44-driving gear, 45-driving rack, 47-second cover plate, 46-mounting shell, 51-second pipe network, 52-air supply member, 61-limiting member, 71-tongue depressor, 81-clamping member, 82-fixing shell, 91-first rod, 92-second rod, 93-hinged rod, 94-limiting plate, 101-limiting block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be described in further detail below with reference to the drawings.

[0021] Example 1

[0022] An oral auxiliary fixing device for intubation anesthesia, please refer to Figures 1 to 8, including two upper support frames 1 symmetrically distributed, the opposite sides of the two upper support frames 1 are provided with flexible pads, which are more in line with the face contour of the patient, a first mounting block 2 is arranged between the two upper support frames 1, the first mounting block 2 is fixedly connected with an upper extrusion frame 3 through bolts (the bolts are not shown in the figure), a pressure plate one 22 is slidably connected in the upper extrusion frame 3, the pressure plate one 22 is arc-shaped, the upper extrusion frame 3 and the pressure plate one 22 can be replaced according to the arrangement of the patient's maxillary teeth, so as to facilitate the full contact of the pressure plate one 22 with the patient's maxillary teeth, the pressure plate one 22 is used for extruding the patient's maxillary teeth, the upper support frame 1 is rotatably connected with a lower support frame 4, a second mounting block 5 is arranged between the symmetrically distributed lower support frames 4, the first mounting block 2 and the second mounting block 5 are both flexible blocks, which are convenient for contacting the face of the patient, the second mounting block 5 is fixedly connected with a lower extrusion frame 6 through bolts (the bolts are not shown in the figure), a pressure plate two 24 is slidably connected in the lower extrusion frame 6, the pressure plate two 24 is arc-shaped, the pressure plate two 24 is used for extruding the patient's mandibular teeth, the lower extrusion frame 6 and the pressure plate two 24 can be replaced according to the arrangement of the patient's mandibular teeth, so as to facilitate the full contact of the pressure plate two 24 with the patient's mandibular teeth, the symmetrically distributed upper support frames 1 are commonly provided with a fixing belt 7, the fixing belt 7 is a magic tape, which is used for fixing the upper support frames 1 on the head of the patient and ensuring the stability of the pressure plate one 22 and the pressure plate two 24, the upper extrusion frame 3 and the lower extrusion frame 6 are commonly provided with a buffer positioning mechanism, the buffer positioning mechanism is used for buffering the extrusion force borne by the upper extrusion frame 3 and the lower extrusion frame 6, in the embodiment, the upper support frame 1 has a fixed connection relationship with the first mounting block 2, and the lower support frame 4 has a fixed connection relationship with the second mounting block 5.

[0023] Please refer to Figure 5 and Figures 7 to 9 , the buffer positioning mechanism includes a first air bag 21, the first air bag 21 is fixedly connected in the upper extrusion frame 3, the pressure plate one 22 is in contact with the first air bag 21, the first air bag 21 is used for buffering the extrusion force applied to the patient's maxillary teeth, a second air bag 23 is fixedly connected in the lower extrusion frame 6, the first air bag 21 and the second air bag 23 are both arc-shaped, the pressure plate two 24 is in contact with the second air bag 23, the second air bag 23 is used for buffering the extrusion force applied to the patient's mandibular teeth, a limiting assembly is arranged on the first air bag 21, the limiting assembly is used for limiting all the lower support frames 4, so as to ensure the opening range of the patient's mouth.

[0024] Please refer to Figure 4 , Figure 6 , Figure 9 and Figure 10The limiting component includes a first pipe network 31, which is connected to the front side of the first airbag 21. A limiting airbag 32 is fixedly connected inside the upper support frame 1 on the front side. Both the second airbag 23 and the limiting airbag 32 are connected to the first pipe network 31. The first airbag 21 and the second airbag 23 both deliver gas to the limiting airbag 32 through the first pipe network 31. A limiting toothed plate 33 is slidably connected inside the upper support frame 1 on the front side. The limiting toothed plate 33 consists of a flat plate and two vertical plates. The limiting airbag 32 is fixedly connected to the limiting toothed plate 33 on the upper support frame 1 on the front side. A limiting gear 34 is provided. In this embodiment, the front upper support frame 1 and the limiting gear 34 are rotatably connected. The limiting tooth plate 33 is used to limit the adjacent limiting gear 34. When the vertical plate is inserted between two adjacent teeth of the limiting gear 34, the limiting gear 34 will not be able to continue to rotate. The front lower support frame 4 is provided with teeth that are evenly distributed and connected to the adjacent limiting gear 34. When the front upper support frame 1 rotates, the limiting gear 34 rotates simultaneously under the action of the evenly distributed teeth on it, but in different directions.

[0025] The working principle of this embodiment: When intubation is required, first release the fixation of one end of the fixation strap 7. The medical staff will slightly open the patient's mouth and place the two upper support frames 1 on the patient's face, with the upper compression frame 3 facing the patient's upper lip and the lower compression frame 6 facing the patient's lower lip. Then, the pressure plate 1 22 is aligned with the patient's upper teeth and the pressure plate 24 is aligned with the patient's lower teeth. After that, the fixation strap 7 is wrapped around the patient's head and both ends are fixed. At this point, the preparation is complete.

[0026] After preparations were completed, medical staff pushed the two lower support frames 4, causing them to rotate counterclockwise around the adjacent upper support frame 1 (towards...). Figure 1 (Based on the front view perspective), the two lower support frames 4 jointly drive the second mounting block 5 to move, the second mounting block 5 drives the lower compression frame 6 to move, the lower compression frame 6 drives the pressure plate 24 to move, and the pressure plate 24 compresses the patient's mandibular teeth. During this process, the two upper support frames 1 jointly position the upper compression frame 3 through the first mounting block 2, thereby limiting the pressure plate 22 on the patient's mandibular teeth. Through the back-to-back movement of the pressure plate 24 and the pressure plate 22, the patient's oral cavity is further opened. During this process, the first airbag 21 and the second airbag 23 provide flexible support for the pressure plate 22 and the pressure plate 24 respectively, but will not over-compress the first airbag 21 and the second airbag 23, avoiding the pressure plate 22 and the pressure plate 24 from applying a hard pushing force to the patient's teeth, thereby reducing the probability of displacement of the patient's teeth joints.

[0027] During the moving of the pressing plate 1 22 and the pressing plate 2 24 away from each other, the patient's mouth is gradually opened, and when the mouth is about to be opened to the limit, the resistance of the pressing plate 1 22 and the pressing plate 2 24 increases, and with the continuous rotation of the two lower support frames 4, the pressing plate 1 22 moves relative to the upper extrusion frame 3 and compresses the first air bag 21, and the pressing plate 2 24 moves relative to the lower extrusion frame 6 and compresses the second air bag 23. After the first air bag 21 and the second air bag 23 are compressed, the gas inside the two air bags is injected into the limiting air bag 32 through the first pipe network 31, and the limiting air bag 32 begins to gradually expand and push the limiting tooth plate 33 to move upward, so that the limiting tooth plate 33 gradually approaches the limiting gear 34. When the limiting tooth plate 33 is inserted between the adjacent two teeth of the limiting gear 34, the limiting gear 34 cannot continue to rotate, so that the front lower support frame 4 cannot continue to rotate, and at this time the rear lower support frame 4 cannot rotate under the action of the second mounting block 5. The medical staff stops pushing the lower support frame 4, at this time the patient's mouth is completely opened, and under the limiting action of the limiting tooth plate 33 and the limiting gear 34, the lower support frame 4 cannot be reset to rotate, that is, the patient's mouth cannot be automatically closed, and then the intubation operation is started.

[0028] After the catheter insertion is completed, the medical staff manually continues to open the patient's mouth, so that the patient's teeth reduce the extrusion force on the pressing plate 1 22 and the pressing plate 2 24, so that the first air bag 21 and the second air bag 23 slowly reset, at this time the first air bag 21 and the second air bag 23 extract the gas in the limiting air bag 32 through the first pipe network 31, the limiting air bag 32 drives the limiting tooth plate 33 to move downward and releases the limiting of the limiting gear 34, so that the lower support frame 4 can rotate, then the medical staff reversely rotates the lower support frame 4, and the patient's mouth is gradually closed, during this process, the catheter is located between the first mounting block 2 and the second mounting block 5, when the first mounting block 2 and the second mounting block 5 are in contact with the catheter, stop rotating the lower support frame 4, the patient's mouth stops closing, then fix the catheter on the first mounting block 2 and the second mounting block 5, and start the subsequent medical work.

[0029] When the catheter needs to be used up and taken out, the medical staff takes out the catheter and releases the fixation of one end of the fixing belt 7, then takes off the device from the patient's face.

[0030] Example 2

[0031] On the basis of example 1, when intubation operation is performed on different patients, the face shape and the size of the head of different patients are slightly different, in order to ensure that the pressing plate 1 22 and the pressing plate 2 24 are fully attached to the patient's teeth, the specific operation is as follows: Please refer to Figures 3 to 7Further comprising an adjusting mechanism arranged on the first mounting block 2, used for adjusting the distance between the symmetrically distributed upper support frames 1, the adjusting mechanism comprises a first cover plate 41 arranged on the first mounting block 2, the first cover plate 41 is fixedly connected with a mounting frame 42, the mounting frame 42 is arranged with symmetrically distributed sliding grooves, the middle part of the first cover plate 41 is rotationally connected with a knob 43, the lower part of the knob 43 is arranged with circumferentially distributed grooves, the lower side of the knob 43 is fixedly connected with a drive gear 44, both of the upper support frames 1 are fixedly connected with drive racks 45, both of the drive racks 45 are engaged with the drive gear 44, and all of the drive racks 45 are respectively located on both sides of the drive gear 44, both of the drive racks 45 are symmetrically distributed and respectively located in the adjacent sliding grooves on the mounting frame 42, the second mounting block 5 is fixedly connected with a mounting shell 46, the lower support frame 4 is slidingly connected with the mounting shell 46, the upper side of the mounting shell 46 is fixedly connected with a second cover plate 47, and in this embodiment, the lower support frame 4 and the second mounting block 5 and the upper support frame 1 and the first mounting block 2 are not directly related.

[0032] Please refer to Figures 3 to 5 The first cover plate 41 is slidingly connected with a limiting piece 61, there is sliding damping between the limiting piece 61 and the first cover plate 41, the limiting piece 61 is composed of a pushing block and an L-shaped rod, when the L-shaped rod of the limiting piece 61 is inserted into one of the grooves of the knob 43, the knob 43 cannot be rotated.

[0033] The working principle of this embodiment is as follows: When the device is used for intubation operation on patients, the distance between the two upper support frames 1 is adjusted according to the size of the patient's head, and the specific operation is as follows: The medical staff takes one end of the fixing belt 7, then starts to rotate the knob 43, the knob 43 drives the drive gear 44 to rotate, the drive gear 44 drives the two drive racks 45 to move, so that the two drive racks 45 move away (opposite) from each other, the drive rack 45 drives the upper support frame 1 to move synchronously, thereby adjusting the position between the two upper support frames 1, the upper support frame 1 drives the adjacent lower support frame 4 to move, so that the lower support frame 4 slides along the mounting shell 46, until the distance between the two upper support frames 1 corresponds to the size of the patient's head, the upper support frame 1 is placed on the patient's face, so that the upper squeezing frame 3 and the lower squeezing frame 6 correspond to the upper teeth and the lower teeth of the patient respectively, after the two upper support frames 1 are placed, the fixing belt 7 is wound around the lower side of the patient's head, and the two ends of the fixing belt 7 are fixed, then the medical staff pushes the limiting piece 61 forward, the limiting piece 61 is inserted into the corresponding groove of the knob 43, so that the knob 43 cannot continue to rotate, thereby limiting the two upper support frames 1, in this way, the distance between the two upper support frames 1 is adjusted according to the size of the head of different patients, thereby improving the applicability of the device.

[0034] When the two upper support frames 1 need to be reset, the limiting piece 61 is pushed backward to lose contact with the knob 43, and then the knob 43 is reversely rotated to move the two drive racks 45, so that the two upper support frames 1 are reset.

[0035] Embodiment 3

[0036] On the basis of embodiment 2, if the patient's oral cavity is in the same degree of opening state for a long time, the temporomandibular joint connecting the mandible and the skull will bear continuous and abnormal stress, which is easy to cause disc displacement, joint capsule or ligament overstretching.

[0037] Please refer to Figures 1 to 4 , Figure 6 and Figure 9 , also including a second pipe network 51, the second pipe network 51 is fixedly connected and communicated with the first air bag 21, the second pipe network 51 is communicated with the second air bag 23, the second pipe network 51 can simultaneously inject gas (exhaust gas) into the first air bag 21 and the second air bag 23, and make the first air bag 21 and the second air bag 23 simultaneously deform, the second pipe network 51 is fixedly connected and communicated with a gas supply member 52, the shape of the gas supply member 52 in the figure is only schematic, which can be a medical needle tube or a manual inflation ball (commonly known as an inflation pump or a rubber ball, mainly composed of a rubber ball body, a one-way valve and an adjusting knob), the specific category of the gas supply member 52 is not limited, which can only play the functions of pumping and releasing air, the gas supply member 52 is used to change the inflation degree of the first air bag 21 and the second air bag 23, during the process of opening the patient's oral cavity, the medical staff temporarily inflates (deflates) the second pipe network 51 through the gas supply member 52, so that the first air bag 21 and the second air bag 23 synchronously inflate (shrink), the degree of opening of the patient's oral cavity is changed, the stress points of the patient's oral cavity internal tissues and various joints are replaced, and continuous compression of the same position is avoided.

[0038] Embodiment 4

[0039] On the basis of embodiment 3, please refer to Figure 2 , Figure 3 , Figures 6 to 8 , also including a tongue depressor 71, the tongue depressor 71 is hinged to the lower extrusion frame 6, the tongue depressor 71 is used to extrude the patient's tongue, and reduce the influence of the tongue on the movement of the catheter, the tongue depressor 71 is made of hard rubber, the second pressing plate 24 is attached to the upper side of the tongue depressor 71, and the attachment position is above the hinge of the tongue depressor 71; when the device is placed in the patient's oral cavity, the tongue depressor 71 enters the patient's oral cavity and contacts the tongue, when the second pressing plate 24 is extruded and slides by the patient's mandibular teeth, the second pressing plate 24 pushes the upper side of the tongue depressor 71, so that the tongue depressor 71 swings clockwise (in the direction of Figure 8 ), and extrudes the patient's tongue, so that the influence on the catheter is reduced.

[0040] Embodiment 5

[0041] On the basis of embodiment 4, after the catheter is inserted, the catheter needs to be fixed, and at present, a cloth or tape is usually used to fix the catheter, but in the process of operation, the position of the catheter will be adjusted from time to time, reducing the interference to the operation, and frequent movement is extremely easy to cause the adhesion failure of the adhesive tape, and the operation is extremely cumbersome.

[0042] Please refer to Figures 2 to 4 , Figure 6 , Figure 11 and Figure 12 , the first cover plate 41 and the second cover plate 47 are slidably connected with the clamping pieces 81, the clamping pieces 81 are provided with arc-shaped grooves matched with the outer side of the catheter, the two clamping pieces 81 are fixedly connected with the fixing shells 82, the upper support frame 1 is rotatably and slidably connected with the adjacent limit gear 34, the width of the limit gear 34 is consistent with the width of the tooth on the lower support frame 4, and the width of the limit gear 34 is greater than the width of the limit tooth plate 33.

[0043] Please refer to Figures 4-7 , Figure 11 and Figure 12 , the clamping piece 81 is slidably connected with the first rod 91 and the second rod 92, the first rod 91 and the second rod 92 can only slide up and down on the adjacent clamping piece 81, the first rod 91 and the second rod 92 are slidably connected with the adjacent fixing shell 82, the upper part of the clamping piece 81 is hingedly connected with the hinge rod 93, the first rod 91 and the second rod 92 are rotatably and slidably connected with the adjacent hinge rod 93, the limit plate 94 is fixedly connected between the first cover plate 41 and the mounting frame 42, a plurality of grooves are arranged on the limit plate 94 and the mounting shell 46, when the first rod 91 is inserted into the groove on the limit plate 94 (the mounting shell 46), the first rod 91 cannot move, so that the clamping piece 81 is limited.

[0044] Please refer to Figure 11 and Figure 12 , the clamping piece 81 is slidably connected with the two limit blocks 101 symmetrically distributed, the back side of the two limit blocks 101 is provided as an arc surface, the two limit blocks 101 symmetrically distributed are provided with an elastic element, the elastic element is a spring, and the two limit blocks 101 symmetrically distributed are respectively used for limiting the adjacent first rod 91 and the second rod 92, the middle part of the first rod 91 and the middle part of the second rod 92 are provided with limit grooves, when the limit block 101 enters the corresponding limit groove, the first rod 91 (the second rod 92) is limited, that is, under the action of no external force, the first rod 91 (the second rod 92) cannot move.

[0045] The working principle of the embodiment is as follows: When the catheter is fixed, the limiting gear 34 is first pulled forward to lose contact with the limiting gear plate 33 below it, and then the medical staff starts to rotate the limiting gear 34 counterclockwise, which drives the lower support frame 4 on the front side to rotate clockwise and gradually resets the lower support frame 4. During this process, the pressure plate one 22 and the pressure plate two 24 lose the pressure on the patient's oral cavity, and the first air bag 21 and the second air bag 23 are slowly reset. At the same time, the medical staff fills the first air bag 21 and the second air bag 23 with air through the air supply part 52 and the second pipe network 51 to ensure the smooth resetting of the first air bag 21 and the second air bag 23, but does not extract the gas in the limiting air bag 32, so that the limiting gear plate 33 remains stationary.

[0046] After the first air bag 21 and the second air bag 23 are reset, stop filling air into them through the air supply part 52. During the resetting of the lower support frame 4, move the catheter between the two clamping pieces 81. When the first mounting block 2 and the second mounting block 5 are in contact with the catheter, stop rotating the limiting gear 34, i.e. stop rotating the lower support frame 4. Then push the limiting gear 34 backward to make it contact with the limiting gear plate 33 again, so that the limiting gear plate 33 limits the limiting gear 34 again. At this time, the lower support frame 4 cannot be rotated, i.e. the patient's oral cavity cannot be continuously closed, and this state is maintained.

[0047] After the lower support frame 4 stops rotating, the medical staff presses the two second rods 92 downward one by one. Take the second rod 92 close to the mounting shell 46 as an example for description. The second rod 92 moves downward and drives the first rod 91 to move upward through the hinged rod 93, so that the first rod 91 loses contact with the mounting shell 46, i.e. the limiting of the clamping piece 81 is released. The second rod 92 gradually moves downward, and the limiting groove on it gradually approaches the corresponding limiting block 101. The first rod 91 extrudes the limiting block 101 during movement to make it slide to the clamping piece 81 and compress the elastic piece thereon. When the second rod 92 moves to the limit position, the limiting groove on it is aligned with the limiting block 101, i.e. the limiting block 101 is inserted into the second rod 92 under the action of the elastic piece thereon and limits the second rod 92. At the same time, the limiting groove of the first rod 91 loses contact with the corresponding limiting block 101. Then push the clamping piece 81 to the right to make it move out of the second cover plate 47 and contact with the catheter. Then repeat the above process to make the other clamping piece 81 contact with the catheter, so as to achieve the purpose of clamping and fixing the catheter by the two clamping pieces 81.

[0048] After the two clamping pieces 81 clamp and fix the catheter, the two first rods 91 are pressed downwardly so as to be respectively inserted into the corresponding grooves on the limiting plate 94 and the mounting shell 46. During the downward movement of the first rods 91, the second rods 92 are driven to move upwardly by the adjacent hinged rods 93. At this time, the limiting grooves of the second rods 92 gradually lose contact with the corresponding limiting blocks 101, and the limiting grooves on the first rods 91 gradually come into contact with the corresponding limiting blocks 101. When the first rods 91 are inserted into the corresponding grooves on the limiting plate 94 (the mounting shell 46), the grooves of the first rods 91 come into contact with the limiting blocks 101, and the limiting grooves of the second rods 92 lose contact with the corresponding limiting blocks 101. At the same time, the limiting blocks 101 limit the first rods 91, so as to ensure the stability of the clamping pieces 81.

[0049] When it is needed to adjust the position of the catheter, the limiting gear 34 loses contact with the limiting toothed plate 33, and the limiting gear 34 is rotated, so that the lower support frame 4 is counterclockwise rotated, thereby separating the two clamping pieces 81 (the distance of separation is less than the diameter of the catheter). Then, the limiting of the two clamping pieces 81 is released, and the two clamping pieces 81 are moved. During the movement, the catheter can slide along the two clamping pieces 81. When the two clamping pieces 81 are moved to the target position, the above process is repeated, so that the two first rods 91 are respectively inserted into the grooves of the limiting plate 94 and the mounting shell 46, thereby limiting the two clamping pieces 81. Then, the limiting gear 34 is reversely rotated, so that the lower support frame 4 is clockwise rotated, thereby gradually approaching the two clamping pieces 81. When the two clamping pieces 81 come into contact, the rotation of the limiting gear 34 is stopped, and the limiting gear 34 comes into contact with the limiting toothed plate 33 again. At this time, the adjustment of the position of the catheter is completed.

[0050] When it is needed to take out the catheter, the above process is repeated, so that the two clamping pieces 81 are separated, the catheter is taken out, and the limiting of the two clamping pieces 81 is released, so as to reset the clamping pieces 81.

[0051] Although the embodiments of the present application have been shown and described, it is to be understood that various modifications can be made to the embodiments without departing from the principles and spirit of the present application.

Claims

1. An oral cavity auxiliary fixation device for intubation anesthesia, characterized in that: The device includes symmetrically distributed upper support frames (1), with a first mounting block (2) between the symmetrically distributed upper support frames (1). The first mounting block (2) is fixedly connected to an upper compression frame (3). A pressure plate (22) is slidably connected inside the upper compression frame (3). The pressure plate (22) is used to compress the patient's maxillary teeth. The upper support frames (1) are rotatably connected to a lower support frame (4). A second mounting block (5) is arranged between the symmetrically distributed lower support frames (4). A lower compression frame (6) is fixedly connected to the second mounting block (5). A pressure plate (24) is slidably connected inside the lower compression frame (6). The pressure plate (24) is used to compress the patient's mandibular teeth. The symmetrically distributed upper support frames (1) are jointly provided with a fixing strap (7). The upper compression frame (3) and the lower compression frame (6) are jointly provided with a buffer positioning mechanism. The buffer positioning mechanism is used to buffer the compressive force on the upper compression frame (3) and the lower compression frame (6).

2. The oral cavity auxiliary fixation device for intubation anesthesia according to claim 1, characterized in that: The buffer positioning mechanism includes a first airbag (21), which is fixedly connected to the upper extrusion frame (3). The first pressure plate (22) is attached to the first airbag (21). A second airbag (23) is fixedly connected to the lower extrusion frame (6). The second pressure plate (24) is attached to the second airbag (23). A limiting component is provided on the first airbag (21). The limiting component is used to limit all the lower support frames (4).

3. The oral cavity auxiliary fixation device for intubation anesthesia according to claim 2, characterized in that: The limiting component includes a first pipeline (31) connected to the first airbag (21), a limiting airbag (32) fixedly connected inside the upper support frame (1), the second airbag (23) and the limiting airbag (32) both connected to the first pipeline (31), a limiting toothed plate (33) slidably connected inside the upper support frame (1), the limiting airbag (32) fixedly connected to the adjacent limiting toothed plate (33), a limiting gear (34) provided on the upper support frame (1), the limiting toothed plate (33) used to limit the adjacent limiting gear (34), and teeth evenly distributed and connected to the adjacent limiting gear (34) on the lower support frame (4).

4. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 3, characterized in that: It also includes an adjustment mechanism, which is set on the first mounting block (2) for adjusting the distance between the symmetrically distributed upper support frames (1). The adjustment mechanism includes a first cover plate (41), which is set on the first mounting block (2). The first cover plate (41) is fixedly connected to a mounting frame (42). The first cover plate (41) is rotatably connected to a knob (43). The knob (43) is fixedly connected to a drive gear (44). The symmetrically distributed upper support frames (1) are all fixedly connected to drive racks (45). The drive racks (45) are slidably connected to the mounting frame (42). The drive racks (45) mesh with the drive gears (44). All the drive racks (45) are located on both sides of the drive gears (44). The second mounting block (5) is fixedly connected to a mounting shell (46). The lower support frame (4) is slidably connected to the mounting shell (46). The mounting shell (46) is fixedly connected to a second cover plate (47).

5. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 4, characterized in that: The first cover plate (41) is slidably connected to a limiting member (61), which is used to limit the knob (43).

6. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 5, characterized in that: It also includes a second pipeline (51), which is fixedly connected to and connected to the first airbag (21). The second pipeline (51) is connected to the second airbag (23). The second pipeline (51) is fixedly connected to and connected to an air supply component (52), which is used to change the degree of inflation of the first airbag (21) and the second airbag (23).

7. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 6, characterized in that: It also includes a tongue depressor (71), which is hinged to the lower extrusion frame (6), and the second pressure plate (24) is attached to the tongue depressor (71).

8. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 7, characterized in that: Both the first cover plate (41) and the second cover plate (47) are slidably connected to clamping members (81), and a fixed shell (82) is fixedly connected to the clamping member (81). The upper support frame (1) is rotatably and slidably connected to the adjacent limiting gear (34).

9. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 8, characterized in that: The clamping member (81) is slidably connected to a first rod (91) and a second rod (92). Both the first rod (91) and the second rod (92) slide with the adjacent fixed shell (82). The clamping member (81) is hinged to a hinge rod (93). The first rod (91) and the second rod (92) are rotatably and slidably connected with the adjacent hinge rod (93). A limiting plate (94) is fixed between the first cover plate (41) and the mounting frame (42). The limiting plate (94) and the mounting shell (46) are used to limit the two first rods (91).

10. An oral cavity auxiliary fixation device for intubation anesthesia according to claim 9, characterized in that: The clamping member (81) is slidably connected to two symmetrically distributed limiting blocks (101), and an elastic element is provided between the two symmetrically distributed limiting blocks (101). The two symmetrically distributed limiting blocks (101) are respectively used to limit the adjacent first rod (91) and second rod (92).

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