Fixing device for intubation during myasthenia gravis rescue

Abstract

The invention belongs to the technical field of cannula fixing devices, and discloses a cannula fixing device for myasthenia gravis rescue, which comprises an upper tooth socket and a lower tooth socket, the connecting seat is connected with the lower tooth socket, the upper tooth socket is connected with a sliding rod, the fixing plate slidably sleeves the sliding rod, the sliding rod is sleeved with a first spring, and the first spring is located between the fixing plate and the upper tooth socket; the fixing plate is detachably connected with the connecting seat through a buckle assembly; grooves are formed in the connecting seat and the fixing plate; the connecting base is rotationally connected with a rotating shaft which is connected with the upper tooth socket through a transmission assembly, and the connecting base is provided with a limiting assembly. The clamping cavity is defined by the fixing plate and the connecting base, fixing of an insertion pipe is achieved, dismounting and mounting are achieved through the buckles, and operation is convenient and fast; the opening degree of the upper tooth socket and the lower tooth socket is adjusted through the rotating shaft and the transmission assembly, so that oral care is facilitated; the fixing plate is matched with the sliding rod, the opening degree of the upper tooth socket and the lower tooth socket can be adjusted, the cannula can be fixed, and displacement or disengagement of the cannula is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intubation fixing device, in particular to a fixing device for intubation in rescue of myasthenia gravis. BACKGROUND

[0002] Myasthenia gravis is an autoimmune disease, and the respiratory muscles of patients are easily affected, leading to difficulty breathing and even respiratory failure. In the rescue process, tracheal intubation is a key measure to maintain the respiratory function of patients, prevent aspiration, ensure oxygen supply and carbon dioxide discharge. The intubation steps are usually as follows: first, prepare the items, including laryngoscope, intubation, etc.; assess the patient's consciousness state, airway condition, etc. and place the patient in a suitable position; increase the patient's oxygen storage by pre-oxygenation; inject anesthetic and muscle relaxant; expose the glottis with a laryngoscope and insert the intubation tube into the trachea; after confirming the position of the intubation tube, withdraw the laryngoscope and fix the intubation tube with a fixing device; finally, connect the breathing machine to assist the patient's breathing, and regularly clean the oral secretions of the intubation patient. At present, when fixing the intubation catheter, a mouthpiece with an intubation fixing cavity is first inserted into the patient's mouth to avoid the teeth from biting the intubation tube and affecting the ventilation effect, and then the intubation tube is fixed with adhesive tape.

[0003] However, the existing fixing device is not convenient for nursing operation, and lacks an intubation fixing assembly during the nursing operation, making it difficult to firmly constrain the intubation tube, which may shift or come out, resulting in too deep or too shallow intubation, thereby affecting the ventilation effect, and in severe cases, it may even cause the patient to suffocate, threatening the safety of life. In addition, medical staff need to spend a lot of time winding adhesive tape during emergency rescue, which is low in operation efficiency and may delay the rescue opportunity. SUMMARY

[0004] The present application aims to provide a fixing device for intubation in rescue of myasthenia gravis, which uses the clamping cavity surrounded by the fixing plate and the connecting seat to fix the intubation tube, and is convenient to operate by buckling disassembly. The opening degree of the upper and lower mouthpieces is adjusted by the transmission assembly and the shaft, so as to facilitate oral care. The fixing plate cooperates with the slide rod to adjust the opening degree of the upper and lower mouthpieces and fix the intubation tube, avoiding the displacement or coming out of the intubation tube, and the operation is convenient. The problems in the background art are solved.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0006] The utility model provides a fixing device for intubation in myasthenia gravis rescue, including upper denture and lower denture, which is connected with the adjusting fixing device between the upper denture and the lower denture, the adjusting fixing device includes connecting seat and fixed plate, the connecting seat is tightly connected with the lower denture, the upper denture is tightly connected with slide rod, the fixed plate is sleeved on the slide rod, the slide rod is sleeved with first spring, the first spring is located between the fixed plate and the upper denture, one end of the first spring is connected with the upper denture, the other end of the first spring is connected with the fixed plate, and the fixed plate is detachably connected with the connecting seat through buckle assembly, the connecting seat and the fixed plate are all provided with recess, and the two recesses enclose intubation clamping cavity, the connecting seat is rotatably connected with pivot, the pivot is connected with the upper denture through transmission assembly, and the connecting seat is provided with limiting assembly for limiting the pivot rotation, pivot rotation, under the limiting effect of slide rod, the upper denture slides towards the direction of far away or close to the fixed plate to adjust the opening and closing degree of mouth.

[0007] Further, the transmission assembly includes a driving bevel gear tightly connected with the pivot, the connecting seat is rotatably connected with a first screw rod, the first screw rod is threadedly connected with a first screw seat, the first screw seat is slidably connected with the connecting seat, the first screw seat is connected with a connecting rod, and the connecting rod is connected with the upper denture.

[0008] Further, the connecting seat is provided with a containing cavity, a breathable plate is slidably connected in the containing cavity, and the breathable plate is provided with a plurality of breathable holes.

[0009] Further, the connecting seat is provided with a first sliding groove and a second sliding groove in the shape of Chinese character KU, the first screw seat is connected with a first sliding block in the shape of Chinese character KU, and the first sliding block is slidably connected in the first sliding groove.

[0010] Further, the lower denture is rotatably connected with a tongue depressor, the breathable plate top end is connected with a connecting rod, and the free end of the connecting rod is connected with the tongue depressor.

[0011] Further, a third spring is connected between the free end of the connecting rod and the tongue depressor, one end of the third spring is rotationally connected with the connecting rod, and the other end of the third spring is rotationally connected with the tongue depressor.

[0012] Further, the buckle assembly comprises a sliding block, a clamping block and a second spring; the connecting seat is provided with a vertical sliding hole near the groove, and the connecting seat is provided with a clamping hole in communication with the vertical sliding hole; the sliding block is connected with the fixed plate, and the sliding block is arranged in cooperation with the vertical sliding hole; the sliding block is provided with a horizontal sliding hole, the second spring is connected in the horizontal sliding hole, the free end of the second spring is connected with the clamping block, and the clamping block is arranged in cooperation with the horizontal sliding hole.

[0013] Further, the upper dental brace and the lower dental brace are both connected with a rest plate for supporting lips.

[0014] Further, the fixed plate is provided with a through hole matched with the sliding rod, and the fixed plate is provided with a spring accommodating cavity in communication with the through hole on the side close to the upper dental brace; and the connecting seat is provided with an accommodating hole at the position corresponding to the through hole.

[0015] Further, the limiting assembly comprises an L-shaped fixing frame and a fixing bolt, the rotating shaft is connected with a knob, the fixing frame is tightly connected with the connecting seat, the fixing frame and the knob are both provided with threaded holes, and the fixing bolt is connected in the two threaded holes.

[0016] The principle and beneficial effects of the technical scheme are as follows:

[0017] 1. The application provides a tracheal intubation fixing device for myasthenia gravis rescue, the upper and lower dental caps are respectively sleeved on the upper and lower dental beds of the patient, so as to fix the whole device; the adjusting fixing device connected between the upper and lower dental caps can not only fix the tracheal tube, but also adjust the mouth opening degree of the patient while fixing the tracheal tube, so as to facilitate oral cleaning and other nursing operations; the adjusting fixing device comprises a connecting seat and a fixing plate, the connecting seat is tightly connected with the lower dental cap, the upper dental cap is tightly connected with a sliding rod, the fixing plate is slidingly sleeved on the sliding rod, the connecting seat and the fixing plate are both provided with grooves, the two grooves form a tracheal tube clamping cavity, the clamping cavity is matched with the diameter of the tracheal tube, so as to fix the tracheal tube and avoid displacement of the tracheal tube, thereby affecting the ventilation effect; the fixing plate and the connecting seat are detachably connected through a buckle assembly, so as to install and dismount the tracheal tube, and the buckle assembly is convenient to dismount, high in efficiency and time-saving; the sliding rod is sleeved with a first spring, the first spring is located between the fixing plate and the upper dental cap, when the tracheal tube needs to be fixed, the fixing plate is slid along the sliding rod towards the direction away from the connecting seat, so as to open the clamping cavity, thereby facilitating the insertion of the tracheal tube into the clamping cavity from the side opening, and then the fixing plate is slid towards the direction close to the connecting seat, so as to fix the tracheal tube, the first spring can not only avoid the separation of the fixing plate and the sliding rod, thereby affecting the operation efficiency, but also can exert elastic force on the fixing plate, so as to increase the clamping force on the tracheal tube and further avoid the displacement of the tracheal tube; the connecting seat is rotationally connected with a rotating shaft, the rotating shaft is connected with the upper dental cap through a transmission assembly, the connecting seat is provided with a limiting assembly, the limiting assembly is used for limiting the rotation of the rotating shaft, so as to fix the upper and lower dental caps when not nursing; when the patient's oral cavity needs to be cleaned and other nursing operations are performed, the rotating shaft is rotated in the forward direction, the transmission assembly drives the upper dental cap to slide along the axial direction of the sliding rod towards the direction away from the connecting seat, so as to open the patient's mouth and facilitate the nursing of the oral cavity by the medical staff, at this time, since the fixing plate is slidingly connected with the sliding rod and the fixing plate is connected with the connecting seat through the buckle, the fixing plate will not move with the upper dental cap, and the tracheal tube can be fixed; therefore, when the nursing is needed, the mouth of the patient can be opened only by rotating the rotating shaft, and the tracheal tube can be clamped and fixed in the clamping cavity, one medical staff can operate, and the device does not need to be taken out, thereby further avoiding the displacement or dismounting of the tracheal tube and affecting the ventilation effect.

[0018] 2.The device for fixing intubation tube in rescue of myasthenia gravis provided by the application, the transmission assembly comprises a driving bevel gear, a first lead screw, a first lead screw seat and a connecting rod, the rotation of the rotating shaft drives the rotation of the driving bevel gear, the driving bevel gear drives the rotation of the first lead screw, the first lead screw drives the axial sliding of the first lead screw seat, the first lead screw seat drives the axial sliding of the upper dental brace along the slide rod through the connecting rod, so as to adjust the opening degree of the patient's mouth, the operation is convenient, and one person can operate, time and labor cost are saved. In addition, the connecting seat is provided with a containing cavity, and a breathable plate is slidably connected in the containing cavity, and a plurality of air holes are formed in the breathable plate, so that the patient's oral cavity can be ventilated, and the patient's mouth can be prevented from being exposed to air all the time, and foreign matters can be prevented from entering the oral cavity; the rotating shaft drives the upper dental brace to move up / down at the same time, and drives the breathable plate to move down / up through another set of transmission assembly; specifically, the other set of transmission assembly comprises a second lead screw, a driven spur gear, a second lead screw seat and a driving spur gear which is tightly connected with the first lead screw, the rotating shaft rotates, drives the upper dental brace to move away from or close to the fixed plate through the set of transmission assembly, at the same time, the driving spur gear on the rotating shaft also drives the rotation of the driven spur gear, the driven spur gear drives the rotation of the second lead screw, the second lead screw drives the axial sliding of the second lead screw seat, the second lead screw seat drives the sliding of the breathable plate away from or close to the lower dental brace, that is, the sliding directions of the upper dental brace and the breathable plate are opposite; in this way, when oral care is needed, the rotating shaft drives the upper dental brace to move away from the lower dental brace at the same time, and drives the breathable plate to slide close to the lower dental brace, so as to double the opening degree of the patient's oral cavity, so that the medical staff can observe and care the oral cavity, reduce the touch of the intubation tube, and further prevent the intubation tube from moving or coming out. The first lead screw seat and the connecting seat are slidably connected through the first slider and the first sliding groove, the second lead screw seat and the connecting seat are slidably connected through the second slider and the second sliding groove, so as to ensure the stability and directivity of sliding.

[0019] 3.The device for fixing intubation tube in rescue of myasthenia gravis provided by the application, the lower dental brace is rotationally connected with a tongue depressor, the breathable plate is connected with a connecting rod at the top end, and the free end of the connecting rod is connected with the tongue depressor; when oral care is needed, the rotating shaft drives the breathable plate to retract towards the lower dental brace, and the breathable plate drives the tongue depressor to rotate downwards, so as to press the patient's tongue downwards, so that the medical staff can observe, and the operation is convenient; after the care is completed, the breathable plate extends towards the upper dental brace, and drives the tongue depressor to move upwards, so as to avoid long-term compression of the patient's tongue and cause pain to the patient. In addition, the free end of the connecting rod and the tongue depressor are connected with a third spring, one end of the third spring is rotationally connected with the connecting rod, and the other end of the third spring is rotationally connected with the tongue depressor, so that the third spring can play a buffering role and reduce the stress concentration on the tongue. The upper dental brace and the lower dental brace are both connected with a resting plate, which is used for supporting the patient's lips, avoiding the lips from pressing the intubation tube and affecting the ventilation effect.

[0020] 4. The application provides a kind of fixing device for intubation in myasthenia gravis rescue, buckle assembly includes slider, clamping block and second spring, connecting seat is equipped with vertical sliding hole near the recess, and connecting seat is equipped with the clamping hole being connected with vertical sliding hole, slider is connected with fixed plate, and slider is arranged in cooperation with vertical sliding hole;Slider is equipped with horizontal sliding hole, second spring is connected in horizontal sliding hole, the free end of second spring is connected with clamping block, and clamping block is arranged in cooperation with horizontal sliding hole;When using, intubation is inserted from the side of connecting seat and fixed plate, clamping block is pressed, clamping block extrudes second spring and retracts in horizontal sliding hole, slider is inserted into vertical sliding hole and pressed down, clamping block slides out from clamping hole, part of clamping block is located in horizontal sliding hole, and part extends from clamping hole, fixed plate and connecting seat are fixed, so as to fix intubation, avoid intubation displacement, convenient operation, save time.

[0021] 5. The application provides a kind of fixing device for intubation in myasthenia gravis rescue, fixed plate is equipped with the through hole being adapted to sliding rod, and the side of fixed plate near upper dental brace is equipped with spring containing cavity being communicated with through hole, can accommodate first spring, when not needing nursing, upper dental brace can be attached to fixed plate, and the opening degree of patient's mouth is as small as possible;And the position corresponding to through hole on connecting seat is equipped with containing hole, containing hole can accommodate sliding rod, to increase the maximum distance of upper dental brace sliding relative to lower dental brace, to meet different individual needs.Limiting component includes L-shaped fixing frame and fixed bolt, shaft is connected with knob, fixing frame is tightly connected with connecting seat, and fixing frame and knob are all equipped with threaded hole, fixed bolt is connected in two threaded holes, the rotation of shaft is limited by threaded connection, and the fixing is good. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 For the structure diagram of the fixing device for intubation in myasthenia gravis rescue of the application Figure One ;

[0023] Figure 2 For the front view of the fixing device for intubation in myasthenia gravis rescue of the application;

[0024] Figure 3 For Figure 2 the sectional view of A-A;

[0025] Figure 4 For Figure 2 the sectional view of B-B;

[0026] Figure 5 For Figure 2 the sectional view of C-C;

[0027] Figure 6 For the top view of the fixing device for intubation in myasthenia gravis rescue of the application;

[0028] Figure 7 For Figure 6 the sectional view of D-D;

[0029] Figure 8 For the structure of the invention is a device for intubation in myasthenia gravis rescue Figure Two .

[0030] The names of the corresponding marks in the drawings are:

[0031] 1, the upper dental; 2, the lower dental; 3, the rest plate; 4, the connecting seat; 5, the fixed plate; 6, the recess; 7, the through hole; 8, the spring containing cavity; 9, the containing hole; 10, the sliding rod; 11, the first spring; 12, the sliding block; 13, the vertical sliding hole; 14, the clamping hole; 15, the horizontal sliding hole; 16, the clamping block; 17, the second spring; 18, the rotating shaft; 19, the knob; 20, the driving bevel gear; 21, the first screw rod; 22, the driven bevel gear; 23, the first screw seat; 24, the driving spur gear; 25, the second screw rod; 26, the driven spur gear; 27, the second screw seat; 28, the connecting rod; 29, the first sliding groove; 30, the second sliding groove; 31, the containing cavity; 32, the air permeable plate; 33, the air hole; 34, the fixed frame; 35, the fixed bolt; 36, the tongue depressor; 37, the connecting rod; 38, the third spring. DETAILED DESCRIPTION

[0032] The invention will be further described in detail below in conjunction with the drawings and embodiments:

[0033] As Figures 1 to 8 shown, a device for intubation in myasthenia gravis rescue, comprising an upper dental 1 and a lower dental 2, and the upper dental 1 and the lower dental 2 are connected with a rest plate 3 for supporting the lips, and the upper dental 1 and the lower dental 2 are connected with an adjusting and fixing device.

[0034] The adjusting fixing device comprises a connecting seat 4 and a fixing plate 5, the connecting seat 4 is fixedly connected with the lower mouthpiece 2, the upper mouthpiece 1 is fixedly connected with a sliding rod 10, the fixing plate 5 is sleeved on the sliding rod 10, specifically, the fixing plate 5 is provided with a through hole 7 matched with the sliding rod 10, and a spring accommodating cavity 8 communicated with the through hole 7 is arranged on the side of the fixing plate 5 close to the upper mouthpiece 1; and the connecting seat 4 is provided with an accommodating hole 9 corresponding to the through hole 7; in actual application, in order to increase the guiding and stability of sliding, a sliding rail is connected to the sliding rod 10, a sliding groove is arranged on the inner wall of the through hole 7, and the sliding rail is slidingly connected in the sliding groove; the sliding rod 10 is sleeved with a first spring 11, the first spring 11 is located between the fixing plate 5 and the upper mouthpiece 1, one end of the first spring 11 is connected with the upper mouthpiece 1, and the other end of the first spring 11 is connected with the fixing plate 5; the connecting seat 4 and the fixing plate 5 are both provided with a recess 6, the two recesses 6 enclose a cannula clamping cavity, and a plurality of anti-skid strips are connected to the inner walls of the two recesses 6; and the fixing plate 5 and the connecting seat 4 are detachably connected through a buckle assembly, specifically, the buckle assembly comprises a sliding block 12, a clamping block 16 and a second spring 17, the connecting seat 4 is provided with a vertical sliding hole 13 close to the recess 6, and the connecting seat 4 is provided with a clamping hole 14 communicated with the vertical sliding hole 13; the sliding block 12 is connected with the fixing plate 5, and the sliding block 12 is arranged in cooperation with the vertical sliding hole 13; the sliding block 12 is provided with a horizontal sliding hole 15, the second spring 17 is connected in the horizontal sliding hole 15, the free end of the second spring 17 is connected with the clamping block 16, and the clamping block 16 is arranged in cooperation with the horizontal sliding hole 15.

[0035] The connecting base 4 is rotationally connected with a rotating shaft 18, the rotating shaft 18 is connected with the upper dental brace 1 through a transmission assembly, the connecting base 4 is provided with a limiting assembly for limiting the rotation of the rotating shaft 18, the limiting assembly comprises an L-shaped fixing frame 34 and a fixing bolt 35, the rotating shaft 18 is connected with a knob 19, the fixing frame 34 is tightly connected with the connecting base 4, one side plate of the fixing frame 34 is parallel with the knob 19, and the side plate of the fixing frame 34 and the knob 19 are both provided with threaded holes, and the fixing bolt 35 is connected into the two threaded holes; the rotating shaft 18 rotates, under the limiting action of the slide rod 10, the upper dental brace 1 slides towards the direction away from or close to the fixed plate 5, so as to adjust the opening degree of the patient's mouth; specifically, the transmission assembly comprises a driving bevel gear 20 which is tightly connected with the rotating shaft 18, the connecting base 4 is rotationally connected with a first lead screw 21, the first lead screw 21 is threadedly connected with a first lead screw seat 23, the first lead screw seat 23 is slidingly connected with the connecting base 4, the first lead screw seat 23 is connected with a connecting rod 28, and the connecting rod 28 is connected with the upper dental brace 1; the first lead screw 21 rotates, and the first lead screw seat 23 moves linearly along the axial direction of the first lead screw 21. In addition, the connecting base 4 is provided with a receiving cavity 31, the receiving cavity 31 is slidingly connected with a breathable plate 32, the breathable plate 32 is provided with a plurality of air holes 33, the connecting base 4 is rotationally connected with a second lead screw 25, the first lead screw 21 is tightly connected with a driving spur gear 24, and the second lead screw 25 is tightly connected with a driven spur gear 26 which is engaged with the driving spur gear 24; the second lead screw 25 is threadedly connected with a second lead screw seat 27, the second lead screw seat 27 is slidingly connected with the connecting base 4, the breathable plate 32 is connected with the second lead screw seat 27, and the second lead screw 25 rotates, so that the breathable plate 32 moves linearly along the axial direction of the second lead screw 25. In actual application, the connecting base 4 is provided with a first sliding groove 29 and a second sliding groove 30 in the shape of Chinese character "K", the first lead screw seat 23 is connected with a first sliding block in the shape of Chinese character "K", and the first sliding block is slidingly connected into the first sliding groove 29; the second lead screw seat 27 is connected with a second sliding block in the shape of Chinese character "K", and the second sliding block is slidingly connected into the second sliding groove 30. The lower dental brace 2 is rotationally connected with a tongue depressor 36, the breathable plate 32 is connected with an L-shaped connecting rod 37 at the top end, a third spring 38 is connected between the free end of the connecting rod 37 and the tongue depressor 36, one end of the third spring 38 is rotationally connected with the connecting rod 37, and the other end of the third spring 38 is rotationally connected with the tongue depressor 36. In addition, the upper dental brace 1, the lower dental brace 2 and the resting plate 3 are all connected with soft support pads, for example, medical soft silica gel, so as to reduce the pain caused to the patient.

[0036] The specific implementation process is as follows:

[0037] When the fixing device is used, the upper dental cover 1 and the lower dental cover 2 are respectively sleeved on the upper dental bed and the lower dental bed of a patient, the fixing plate 5 is slid towards the direction close to the upper dental cover 1, the cannula is put into the side opening of the fixing plate 5 and the connecting base 4, the clamping block 16 is pressed, the clamping block 16 extrudes the second spring 17 and is retracted into the horizontal sliding hole 15, then the sliding block 12 is inserted into the vertical sliding hole 13 and is pressed down, the clamping block 16 slides out of the clamping hole 14, a part of the clamping block 16 is located in the horizontal sliding hole 15 and a part of the clamping block 16 extends out of the clamping hole 14, the fixing plate 5 is fixed with the connecting base 4, the knob 19 is rotated in a forward direction, the rotating shaft 18 is rotated, the driving bevel gear 20 is rotated by the rotating shaft 18, the first screw rod 21 is rotated by the driving bevel gear 20, the first screw seat 23 is slid along the axial direction towards the direction close to the lower dental cover 2 by the first screw rod 21, the first screw seat 23 drives the upper dental cover 1 to slide along the axial direction of the sliding rod 10 towards the direction close to the lower dental cover 2 by the connecting rod 28, so that the upper dental cover 1 contacts with the fixing plate 5 to reduce the opening degree of the mouth, at the same time, the driving spur gear 24 on the first screw rod 21 also drives the driven spur gear 26 to rotate, the second screw rod 25 is rotated by the driven spur gear 26, the second screw seat 27 is slid along the axial direction towards the direction close to the upper dental cover 1 by the second screw rod 25, the second screw seat 27 drives the air permeable plate 32 to extend towards the direction close to the upper dental cover 1, that is, the sliding directions of the upper dental cover 1 and the air permeable plate 32 are opposite, when oral care is needed, the knob 19 is rotated in a reverse direction, the first screw seat 23 drives the upper dental cover 1 to slide along the axial direction of the sliding rod 10 away from the lower dental cover 2 by the connecting rod 28, so that the mouth of the patient is pried open, at this time, the fixing plate 5 is still connected with the connecting base 4 by the clamping block 16, the cannula is fixed, at the same time, the second screw seat 27 drives the air permeable plate 32 to retract towards the direction away from the upper dental cover 1, so as to further increase the opening of the oral cavity, and the air permeable plate 32 retracts while driving the tongue pressing plate 36 to press down, the tongue pressing plate 36 presses the tongue down, so that the medical staff can observe and care.

[0038] The upper dental brace 1 and the lower dental brace 2 are respectively sleeved on the upper dental bed and the lower dental bed of the patient, so that the whole device is fixed; the connecting seat 4 and the fixing plate 5 are both provided with a groove 6, and the two grooves 6 enclose a cannula clamping cavity which is matched with the diameter of the cannula and can fix the cannula to avoid displacement of the cannula and affect the ventilation effect; the fixing plate 5 is detachably connected with the connecting seat 4 through a buckle assembly, so that the cannula can be installed and removed, and the buckle assembly is convenient and efficient to disassemble and assemble, saving time; the first spring 11 can not only avoid separation of the fixing plate 5 and the slide rod 10 and affect the operation efficiency, but also can exert elastic force on the fixing plate 5 to increase the clamping force on the cannula and further avoid displacement of the cannula; the connecting seat 4 is provided with a limiting assembly for limiting rotation of the rotating shaft 18, so as to fix the upper and lower dental braces 2 when not nursing; when it is necessary to clean the inside of the patient's mouth and other nursing operations, the rotating shaft 18 is reversely rotated, the transmission assembly drives the upper dental brace 1 to slide along the axial direction of the slide rod 10 away from the connecting seat 4, so as to open the patient's mouth and facilitate the nursing staff to nurse the mouth; at this time, since the fixing plate 5 is slidably connected with the slide rod 10 and the fixing plate 5 is connected with the connecting seat 4 through the buckle, the fixing plate 5 will not move with the upper dental brace 1 and can fix the cannula; therefore, when nursing is needed, the patient's mouth can be opened only by rotating the rotating shaft 18, and the cannula can be clamped and fixed in the clamping cavity, and one nursing staff can operate, and the device does not need to be taken out, avoiding displacement or falling out of the cannula and affecting the ventilation effect.

[0039] The transmission assembly includes a driving bevel gear 20, a first screw rod 21, a first screw seat 23 and a connecting rod 28, which is convenient to operate and can be operated by one person, saving time and labor cost; the air permeable plate 32 is slidably connected in the accommodating cavity 31, and the air permeable plate 32 is provided with a plurality of air permeable holes 33, so as to ventilate the patient's mouth and avoid the patient's mouth being exposed to air all the time and foreign matters entering the mouth; when the inside of the mouth needs to be nursed, the rotating shaft 18 drives the upper dental brace 1 to move away from the lower dental brace 2 at the same time, and drives the air permeable plate 32 to slide towards the lower dental brace 2, so as to double the opening degree of the patient's mouth, facilitating the nursing staff to observe and nurse the mouth and reducing touching of the cannula, further avoiding displacement or falling out of the cannula. The first screw seat 23 is slidably connected with the connecting seat 4 through a first “n” shaped sliding block and a first sliding groove 29, and the second screw seat 27 is slidably connected with the connecting seat 4 through a second “n” shaped sliding block and a second sliding groove 30, which can ensure the stability and directivity of sliding.

[0040] In addition, the rotation shaft 18 drives the air permeable plate 32 to retract towards the direction close to the lower dental brace 2, the air permeable plate 32 drives the tongue plate 36 to rotate downwards to press the patient's tongue downwards to facilitate the observation of the medical staff, and the convenience of operation is increased; after the nursing is completed, the air permeable plate 32 extends towards the direction close to the upper dental brace 1, and drives the tongue plate 36 to move upwards to avoid long-term compression of the patient's tongue and cause pain to the patient. In addition, the free end of the connecting rod 37 is connected with the tongue plate 36 through the third spring 38, and the third spring 38 can play a buffering role and reduce the stress concentration on the tongue. The upper dental brace 1 and the lower dental brace 2 are connected with the rest plate 3, which is used for supporting the patient's lips to avoid extrusion of the cannula and affect the ventilation effect. The buckle assembly includes the sliding block 12, the clamping block and the second spring 17, the connecting seat 4 is provided with the vertical sliding hole 13 close to the groove 6, which is convenient to operate and saves time.

[0041] The fixed plate 5 is provided with the through hole 7 matched with the sliding rod 10, and the side of the fixed plate 5 close to the upper dental brace 1 is provided with the spring accommodating cavity 8 communicated with the through hole 7, which can accommodate the first spring 11. When the nursing is not needed, the upper dental brace 1 can be attached to the fixed plate 5 to minimize the opening degree of the patient's mouth; and the accommodating hole 9 is arranged on the connecting seat 4 corresponding to the through hole 7, which can accommodate the sliding rod 10 to increase the maximum distance of the sliding of the upper dental brace 1 relative to the lower dental brace 2 to meet different personalized needs. The limiting assembly includes the L-shaped fixed frame 34 and the fixed bolt 35, the rotation shaft 18 is connected with the knob 19, the fixed frame 34 is tightly connected with the connecting seat 4, the fixed frame 34 and the knob 19 are both provided with the threaded hole, and the fixed bolt 35 is connected in the two threaded holes through the threaded connection to limit the rotation of the rotation shaft 18, which is good in fixing.

[0042] The above-mentioned is only an embodiment of the present application, and the specific technical solutions or characteristics in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the technical solutions of the present application, a number of deformations and improvements can be made, which should be regarded as the protection scope of the present application, and these will not affect the effect and practicability of the present application. The protection scope claimed in the present application should be subject to the content of its claims, and the specific embodiments in the description can be used to explain the content of the claims.

Claims

1. A fixing device for intubation during rescue of myasthenia gravis, characterized in that: The cam is secured to the upper and lower jaws and is adapted to engage the toothed assembly and to engage with the toothed assembly so that the cam can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly can be engaged with the toothed assembly and the toothed assembly 2. A fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The transmission assembly includes an active bevel gear fastened to the rotating shaft, the connecting seat is rotatably connected to a first screw rod, the first screw rod is connected to a first wire seat by a thread, and the first wire seat is slidably connected to the connecting seat, the first wire seat is connected to a connecting rod, and the connecting rod is connected to the upper braces; when the first screw rod rotates, the first wire seat moves linearly along the axial direction of the first screw rod.

3. A fixing device for intubation during rescue of myasthenia gravis according to claim 2, characterized in that: The connecting seat is provided with an accommodating cavity, in which an air permeable plate is slidably connected, and the air permeable plate is provided with a plurality of air permeable holes; the connecting seat is rotatably connected to a second screw rod, and the first screw rod is fastened to a driving spur gear, and the second screw rod is fastened to a driven spur gear meshing with the driving spur gear; the second screw rod is connected to a second wire seat by a thread, and the second wire seat is slidably connected to the connecting seat, and the air permeable plate is connected to the second wire seat, and the second screw rod rotates, and the air permeable plate moves linearly along the axial direction of the second screw rod.

4. A fixing device for intubation during rescue of myasthenia gravis according to claim 3, characterized in that: The connecting seat is provided with a first "convex"-shaped sliding groove and a second sliding groove. The first wire seat is connected to a first "convex"-shaped slider, and the first slider is slidably connected in the first sliding groove; the second wire seat is connected to a second "convex"-shaped slider, and the second slider is slidably connected in the second sliding groove.

5. The fixing device for intubation during rescue of myasthenia gravis according to claim 3, characterized in that: The lower brace is rotatably connected to a tongue depressor, the top end of the air-permeable plate is connected to a connecting rod, and the free end of the connecting rod is connected to the tongue depressor.

6. A fixing device for intubation during rescue of myasthenia gravis according to claim 5, characterized in that: A third spring is connected between the free end of the connecting rod and the tongue depressor, one end of the third spring is rotatably connected to the connecting rod, and the other end of the third spring is rotatably connected to the tongue depressor.

7. The fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The buckle assembly includes a slider, a clamping block and a second spring; a vertical sliding hole is provided on the connecting seat near the groove, and a clamping hole is provided on the connecting seat that is connected to the vertical sliding hole; the slider is connected to the fixing plate, and the slider is matched with the vertical sliding hole; the slider is provided with a horizontal sliding hole, the second spring is connected to the horizontal sliding hole, the free end of the second spring is connected to the clamping block, and the clamping block is matched with the horizontal sliding hole.

8. The fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The upper braces and the lower braces are both connected with a shelf plate for supporting lips.

9. The fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The fixing plate is provided with a through hole adapted to the sliding rod, and a spring accommodating cavity connected to the through hole is provided on a side of the fixing plate close to the upper braces; and an accommodating hole is provided at a position corresponding to the through hole on the connecting seat.

10. The fixing device for intubation during rescue of myasthenia gravis according to claim 1, characterized in that: The limiting component includes an L-shaped fixing frame and a fixing bolt. The rotating shaft is connected to a knob. The fixing frame is tightly connected to the connecting seat. Both the fixing frame and the knob are provided with threaded holes. The fixing bolt is passed through and connected to the two threaded holes.

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