A suction laryngoscope and control method thereof

Abstract

The present invention provides a suction-type laryngoscope, comprising: a mirror handle; a laryngoscope blade, a plurality of first suction holes, which are symmetrically arranged on both sides of the laryngoscope blade; a plurality of second suction holes, which are arranged at the bottom of one end of the laryngoscope blade away from the mirror handle; a pair of first suction tubes, which are symmetrically arranged inside the laryngoscope blade; a plurality of second suction tubes, which are arranged inside the laryngoscope blade, and one end passes through the second suction hole and is flush with the second suction hole, and the other end is connected to the other end of the first suction tube; a plurality of connecting tubes, which correspond to the first suction holes one by one, and one end passes through the corresponding first suction hole, and the other end is connected to the corresponding first suction tube; a guide tube, one end of which is arranged in the laryngoscope blade and is connected to the other end of the first suction tube and the second suction tube, and the other end is arranged in the mirror handle; a storage box, which is arranged in the mirror handle and is connected to the other end of the guide tube. The present invention also provides a control method for a suction-type laryngoscope.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly to a suction-type laryngoscope and a control method thereof. Background Art

[0002] In clinical work, when performing laryngoscopy, patients may have excessive secretions, which may require them to cooperate in swallowing saliva before continuing the laryngoscopy. However, some patients have severe swallowing reflexes and are unable to cooperate, which often takes time and effort, causes pain to the patients, and increases the examination time.

[0003] Chinese invention patent 201710978337.3 discloses a flexible laryngoscope electrosurgical knife head with a suction tube, including a knife head body, an insulating layer and a suction tube; the insulating layer is sleeved on the knife head body and the suction tube, the knife head body and the right end of the suction tube both extend to the outside of the insulating layer, and the left end of the suction tube is connected to an external suction port, and blood is sucked by smoking through the suction tube. This structure only includes a suction tube, but how to achieve smoking and sucking blood and how to accurately control smoking and sucking blood are not explained. Excessive suction will cause excessive negative pressure near the operation, affecting the accuracy of the operation, while too little suction will not be able to efficiently suck blood, still affecting the observation field, affecting the speed of the operation, and may even cause surgical errors.

[0004] Chinese utility model patent 201721318976.9 discloses a split laryngoscope auxiliary device with suction, which includes a light-guiding laryngoscope sleeve, a positioning suction tube sleeve and a hose guide positioning device. The light-guiding laryngoscope sleeve includes a light-guiding lens with an inner cavity and a connector. The light-guiding lens is provided with a suction port and a mounting hole at the top. The suction port is connected to the mounting hole and the inner cavity of the light-guiding lens. The positioning suction tube sleeve penetrates into the inner cavity of the light-guiding lens through the mounting hole and passes out from the suction port to suck the liquid or vomited mush in the patient's throat. However, this structure is only provided with a suction hole at the top of the light-guiding lens, which can only suck the secretions at this place, while the secretions at other positions cannot be processed, and the suction tube is flush with the suction port. Only when the amount of secretions is too much and close to the suction port, can the secretions be effectively sucked. When the amount of secretions does not reach the suction port, it can still cause unclear observation field, but the suction tube cannot effectively suck the secretions. Summary of the invention

[0005] One purpose of the present invention is to design and develop a suction-type laryngoscope that can suction secretions in multiple directions and improve the absorption efficiency of secretions.

[0006] Another object of the present invention is to design and develop a control method for a suction laryngoscope, which can collect the area of ​​secretions and determine the extension of the telescopic rod and the absorption rate of the secretions based on the CRJ neural network, so as to efficiently absorb the secretions.

[0007] The invention can also accurately control the rotation speed of the negative pressure pump, and correct the rotation speed of the negative pressure pump, so as to accurately control the absorption of secretion liquid near the laryngoscope blade.

[0008] The technical solution provided by the present invention is:

[0009] A suction laryngoscope, comprising:

[0010] mirror handle; and

[0011] A laryngoscope blade is arc-shaped and hinged to the blade handle, and a camera is arranged on the top of one end of the laryngoscope blade away from the blade handle;

[0012] A plurality of first suction holes are symmetrically arranged on both sides of the laryngoscope blade;

[0013] A plurality of second suction holes are arranged at the bottom of one end of the laryngoscope blade away from the blade handle;

[0014] A pair of first suction tubes, which are symmetrically arranged inside the laryngoscope blade and have one end sealed;

[0015] A plurality of second suction tubes, which are arranged inside the laryngoscope blade, one end of which passes through the second suction hole and the other end of which is connected to the other end of the first suction tube;

[0016] A plurality of connecting pipes, each corresponding to the first suction holes one by one, with one end passing through the corresponding first suction hole and the other end communicating with the corresponding first suction pipe;

[0017] A flow guide tube, one end of which is disposed in the laryngoscope blade and is connected to the other ends of the first suction tube and the second suction tube, and the other end of which is disposed in the blade handle;

[0018] an adjusting mechanism, which is arranged between the first suction tubes and has two ends connected to the corresponding first suction tubes, and is used to adjust the distance between the first suction tubes;

[0019] A containing box, which is arranged in the mirror handle and is connected with the other end of the guide tube;

[0020] A negative pressure pump, which is fixedly disposed in the containing box and is used to provide suction;

[0021] Wherein, in the initial state, one end of the connecting pipe is flush with the first suction hole.

[0022] Preferably, the adjustment mechanism comprises:

[0023] A power mechanism, which is fixedly arranged on any one of the first suction tubes;

[0024] A telescopic rod, one end of which is fixedly connected to the output end of the power mechanism, and the other end of which is fixedly connected to the other first suction tube;

[0025] A plurality of connection springs are sleeved on the connection tube in a one-to-one correspondence, and one end of the connection springs is fixedly connected to the inner wall of the laryngoscope blade, and the other end of the connection springs is fixedly connected to the corresponding first suction tube.

[0026] Preferably, it also includes:

[0027] A plurality of circular grooves, which correspond to the first suction holes one by one and are evenly arranged on both sides of the laryngoscope blade;

[0028] A plurality of suction sheets, which correspond to the connecting tubes one by one and are coaxially arranged on the connecting tubes located outside the laryngoscope blades;

[0029] A plurality of washers are annular in shape and correspond one to one with the suction sheets and are coaxially arranged on a side of the suction sheet away from the connecting pipe.

[0030] Preferably, it also includes:

[0031] A plurality of first sealing rings, which are arranged in the first suction holes in a one-to-one correspondence, and the connecting pipe seal passes through the first sealing rings;

[0032] A plurality of second sealing rings are arranged in the second suction holes in a one-to-one correspondence, and the second suction tube seal passes through the second sealing rings.

[0033] Preferably, it also includes:

[0034] A plurality of infrared sensors, which correspond to the first suction holes one by one and are arranged on the laryngoscope blade near the groove, for detecting the area of ​​the secretion at each location;

[0035] A plurality of viscosity sensors, which are arranged on the gasket in a one-to-one correspondence and are used to detect the viscosity of the secretion liquid;

[0036] The controller is connected with the infrared sensor, the viscosity sensor and the power mechanism, and is used for receiving the detection data of the infrared sensor and the viscosity sensor, and controlling the operation of the power mechanism.

[0037] A control method for a suction laryngoscope collects the area of ​​secretion fluid and determines the extension of a telescopic rod and the absorption rate of the secretion fluid based on a CRJ neural network, specifically comprising the following steps:

[0038] Step 1: According to the sampling period, the area of ​​secretion fluid at each location is collected by the sensor;

[0039] Step 2: Determine the input layer neuron vector of the three-layer CRJ neural network:

[0040] T=(s′1,s′2…,s′ m );

[0041] Among them, s' m is the area of ​​secretion collected by the mth infrared sensor;

[0042] Step 3: The input layer vector is mapped to the reserve pool, which has m neurons;

[0043] Step 4: Get the output layer neuron vector:

[0044] O=(o1,o2);

[0045] Among them, o1 is the extension of the telescopic rod, and o2 is the absorption rate of the secretion fluid.

[0046] Preferably, the rotation speed of the negative pressure pump is controlled according to the absorption rate o2 of the secretion fluid to satisfy:

[0047]

[0048] Among them, n Q is the speed of the negative pressure pump, n0 is the basic speed of the negative pressure pump, ΔP0 is the negative pressure generated when the speed of the negative pressure pump is n0, π is the pi, l1 is the axial length of the first suction tube, l2 is the axial length of the second suction tube, l0 is the axial length of the connecting tube, l3 is the axial length of the guide tube, r2 is the inner diameter of the second suction tube, r1 is the inner diameter of the first suction tube, r0 is the inner diameter of the connecting tube, r3 is the inner diameter of the guide tube, r is the blade radius of the negative pressure pump, m is the number of connecting tubes, and n is the number of second suction tubes.

[0049] Preferably, it also includes:

[0050] Correct the rotation speed of the negative pressure pump:

[0051]

[0052]

[0053] Among them, η is the working efficiency of the negative pressure pump, ξ s is the viscosity of the secretion, ξ0 is the standard viscosity, ξ i is the viscosity of the secretion fluid detected by the i-th viscosity sensor.

[0054] Preferably, the excitation functions of the input layer, the reserve pool and the output layer all adopt hyperbolic tangent functions, and their state equations are:

[0055] x(k+1)=tanh(W mid ·x(k)+W in u(k))

[0056]

[0057] Among them, W in is the input weight, W mid is the weight of the reserve pool on the output, which includes the cycle weight and jump weight, W out is the output weight.

[0058] Preferably, the number of neurons in the reserve pool is 1000.

[0059] The beneficial effects of the present invention are:

[0060] (1) The suction laryngoscope designed and developed by the present invention can suction secretions from multiple directions, thereby improving the suction efficiency of secretions.

[0061] (2) The control method of the suction laryngoscope designed and developed by the present invention can collect the area of ​​secretion liquid, and determine the extension of the telescopic rod and the absorption rate of the secretion liquid based on the CRJ neural network, so as to efficiently absorb the secretion liquid. The present invention can also accurately control the speed of the negative pressure pump and calibrate the speed of the negative pressure pump to accurately control the absorption of the secretion liquid near the laryngoscope blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic structural diagram of the suction laryngoscope of the present invention.

[0063] Figure 2 It is a schematic cross-sectional structural diagram of the suction laryngoscope of the present invention.

[0064] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the laryngoscope blade of the suction laryngoscope according to the present invention.

[0065] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the laryngoscope blade of the suction laryngoscope according to the present invention.

[0066] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the laryngoscope blade of the suction laryngoscope according to the present invention.

[0067] Figure 6 It is a schematic diagram of the partial cross-sectional structure of the laryngoscope blade of the suction laryngoscope according to the present invention.

[0068] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the laryngoscope blade of the suction laryngoscope according to the present invention.

[0069] Figure 8 This is a diagram of the CRJ network structure described in the present invention.

[0070] Description of Reference Numerals

[0071] 100. mirror handle; 200. laryngoscope blade; 210. first suction hole; 220. second suction hole; 230. first suction tube; 240. second suction tube; 250. connecting tube; 260. flow guide tube; 270. storage box; 280. adjustment mechanism; 211. groove; 281 driving motor; 282. telescopic rod; 283. connecting spring; 251. suction sheet; 252. gasket. DETAILED DESCRIPTION

[0072] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0073] The present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete. In the drawings, the size and relative sizes of structures and regions may be exaggerated for clarity.

[0074] like Figure 1-7 As shown, the present invention provides a suction laryngoscope, comprising: a handle 100, a laryngoscope blade 200 is hingedly provided with the handle 100, and the laryngoscope blade 200 is arc-shaped, and a camera is provided at the top of one end of the laryngoscope blade 200 away from the handle 100, for photographing the throat condition. The handle 100 is hingedly connected with the laryngoscope blade 200, so as to adapt to patients with different throat conditions.

[0075] A plurality of first suction holes 210 are symmetrically arranged on both sides of the laryngoscope blade 200, and a plurality of second suction holes 220 are arranged at the bottom of one end of the laryngoscope blade 200 away from the blade handle 100. A pair of first suction tubes 230 are symmetrically arranged inside the laryngoscope blade 200, one end of which is closed. A second suction tube 240 corresponding to the second suction hole 220 is also arranged inside the laryngoscope blade 200, one end of which passes through the second suction hole 220, and the other end is collected at one place and maintained in communication with the other end of the first suction tube 230. This allows the secretions sucked by the first suction tube 230 and the second suction tube 240 to be collected and flowed to one place.

[0076] A connecting tube 250 is provided corresponding to the first suction hole 210, one end of which passes through the corresponding first suction hole 210, and the other end is connected to the corresponding first suction tube 230, so that the secretion liquid sucked by the connecting tube 250 flows into the first suction tube 230 through the connecting tube 250, and flows to the converging point. In the initial state, one end of the connecting tube 250 is flush with the first suction hole 210. A guide tube 260 is provided in communication with the converging point, one end of which is provided in the laryngoscope blade 200, and is connected to the converging point of the other ends of the first suction tube 230 and the second suction tube 240, and the other end is provided in the blade handle 100, so that the sucked secretion liquid finally flows to the guide tube 260.

[0077] A storage box 270 is provided in communication with the guide tube 260 and is disposed in the mirror handle 100. The mirror handle 100 is connected in two sections. When the two ends of the mirror handle 200 are separated, the storage box 270 can be exposed. A valve port (not shown in the figure) is provided at the exposed end of the storage box 270 to discharge the sucked secretion liquid. A negative pressure pump (not shown in the figure) is fixedly provided in the storage box 270. When the negative pressure pump is working, it can provide negative pressure to suck the secretion liquid.

[0078] An adjusting mechanism 280 is provided between a pair of first suction tubes 230, and both ends of the adjusting mechanism are connected to the corresponding first suction tubes 230, for adjusting the spacing between the first suction tubes 230. The adjusting mechanism is a cylinder 280, and one end 281 of the cylinder body thereof is fixedly provided on any first suction tube 230. One end of the piston rod 282 is fixedly connected to the other first suction tube 230. A connecting spring 283 is sleeved on the connecting tube 250 in a one-to-one correspondence, one end of which is fixedly connected to the inner wall of the laryngoscope blade 200, and the other end is fixedly connected to the corresponding first suction tube 230, for balancing and stabilizing the first suction tube 230. In the initial state, the spacing between the first suction tubes 230 is the smallest, and one end of the connecting tube 250 is flush with the first suction hole 210. When the driving motor 281 drives the telescopic rod 282 to extend, the first suction tubes 230 move away from each other, so that the connecting tube 250 can extend out of the laryngoscope blade 200 along the first suction hole 210, so that the connecting tube 250 can be closer to the secretion liquid, and the secretion liquid can be more effectively sucked.

[0079] As another embodiment of the present invention, a plurality of circular grooves 211 are evenly arranged on both sides of the laryngoscope blade 200, which correspond to the first suction holes 210 one by one, and the first suction hole 210 is the center of the corresponding circular groove 211. A suction sheet 251 is coaxially arranged at one end of the connecting tube 250 located outside the laryngoscope blade 200 to increase the suction area. A gasket 252 is coaxially arranged on one side of the suction sheet 251 away from the connecting tube 250, which is in a circular ring shape to prevent the suction sheet 251 from being completely attached to the throat and failing to attract secretions.

[0080] A plurality of first sealing rings (not shown in the figure) are arranged in a one-to-one correspondence in the first suction hole 210, and the connecting tube 250 seals through the first sealing ring. A plurality of second sealing rings (not shown in the figure) are arranged in a one-to-one correspondence in the second suction hole 220, and the second suction tube 240 seals through the second sealing ring, so that the secretion liquid can only enter the guide tube 260 through the connecting tube 250 or the second suction tube 240, thereby preventing the secretion liquid from entering the inside of the laryngoscope blade 200 and causing damage to the internal components, thereby increasing the service life of the laryngoscope.

[0081] In this embodiment, it also includes: a plurality of infrared sensors, which correspond one-to-one to the first suction holes 210 and are arranged on the laryngoscope blade 200 near the groove 211, for detecting the area of ​​the secretion liquid at various locations in the throat; a plurality of viscosity sensors, which correspond one-to-one to the gasket 252, for detecting the viscosity of the secretion liquid; a controller, which is connected to the infrared sensor, the viscosity sensor and the power mechanism, for receiving the detection data of the infrared sensor and the viscosity sensor, and controlling the operation of the power mechanism.

[0082] The suction-type laryngoscope designed and developed by the present invention can suction secretions in multiple directions, thereby improving the suction efficiency of secretions.

[0083] The present invention also provides a control method for a suction laryngoscope, which can collect the area of ​​secretion fluid and determine the extension amount of the telescopic rod and the absorption rate of the secretion fluid based on the CRJ neural network, and specifically comprises the following steps:

[0084] Step 1: According to the sampling period, the area of ​​secretion fluid at each location is collected by the sensor;

[0085] Step 2: Determine the input layer neuron vector of the three-layer CRJ neural network:

[0086] T=(s′1,s′2…,s′ m );

[0087] Among them, s' m is the area of ​​secretion collected by the mth infrared sensor;

[0088] Step 3: The input layer vector is mapped to the reserve pool, which has m neurons;

[0089] Step 4: Get the output layer neuron vector:

[0090] O=(o1,o2);

[0091] Among them, o1 is the extension of the telescopic rod, and o2 is the absorption rate of the secretion fluid.

[0092] The number of neurons in the reserve pool is 1000, and the excitation functions of the input layer, reserve pool and output layer all adopt hyperbolic tangent function, and the state equation is:

[0093] x(k+1)=tanh(W mid ·x(k)+W in u(k))

[0094]

[0095] Where W in is the input weight, W midis the weight of the reserve pool on the output, which includes the cycle weight and jump weight, W out is the output weight.

[0096] As a new type of recurrent neural network (RNN), the Certain Recurrent Jump State Network (CRJ) has made great improvements over traditional neural networks in the identification of nonlinear systems, especially in the one-dimensional time series problem. Its basic structure is as follows Figure 8 As shown in Figure 1, it consists of an input layer, an output layer, and a large reserve pool. In the reserve pool, the connected neuron nodes are connected by unidirectional loop edges and bidirectional jump edges. When CRJ is initialized, all weights are not random. The input weight, loop weight, and jump weight are determined by r i 、r c 、r j Sure.

[0097] For a CRJ state network with M input nodes, N reserve pool neurons, and D output nodes, the hyperbolic tangent function is used as its activation function, and its state equation is:

[0098] x(k+1)=tanh(W mid ·x(k)+W in u(k))

[0099]

[0100] Where W in is the input weight, r i OK, W. mid is the weight of the reserve pool on the output, which includes the cycle weight and jump weight, W out is the output weight, which is determined by the training data. i When determined, enter the weight W in have:

[0101]

[0102] In the formula, |W ij |=r i , W ij The positive and negative signs of can be generated randomly or based on experience. mid Relatively complex, the circulant weight matrix W re During initialization:

[0103]

[0104] Where W ij =1 means that the i-th neuron is connected to the j-th neuron. Since it is a one-way connection, W ji = 0. When r c When confirmed, then:

[0105]

[0106] If r j After the jump step length L is set, since the jump connection is bidirectional, we have:

[0107]

[0108] Where i = (1, 2, ..., K), k = (k1, k2, ..., k K+1 )=(1,1+L,1+2L,1+3L,…,1+KL), K=round down W re After the corresponding weights in are replaced according to the above formula, the new weight matrix is ​​the weight matrix of the reserve pool for the output.

[0109] Initialize the CRJ network. The input is the area of ​​secretion collected by the sensor at the current moment. The output is the extension of the telescopic rod and the absorption rate of the secretion at the next moment. The number of neurons in the reserve pool is set to 1000, the sparsity is set to 4%, the input unit scale is set to 1, and the spectral radius r is set to 1. i =0.5, and in addition, assuming r c =0.8, r j =0.7. The CRJ network is trained using multiple sets of sample data, and the trained CRJ network is used to determine the extension of the telescopic rod and the absorption rate of the secretion fluid.

[0110] According to the absorption rate o2 of the secretion fluid, the speed of the negative pressure pump is controlled to meet the following requirements:

[0111]

[0112] Among them, n Q is the speed of the negative pressure pump, n0 is the basic speed of the negative pressure pump, ΔP0 is the negative pressure generated when the speed of the negative pressure pump is n0, π is the pi, l1 is the axial length of the first suction tube, l2 is the axial length of the second suction tube, l0 is the axial length of the connecting tube, l3 is the axial length of the guide tube, r2 is the inner diameter of the second suction tube, r1 is the inner diameter of the first suction tube, r0 is the inner diameter of the connecting tube, r3 is the inner diameter of the guide tube, r is the blade radius of the negative pressure pump, m is the number of connecting tubes, and n is the number of second suction tubes.

[0113] And calibrate the rotation speed of the negative pressure pump:

[0114]

[0115] Among them, η is the working efficiency of the negative pressure pump, ξ s is the viscosity of the secretion, ξ0 is the standard viscosity, ξ i is the viscosity of the secretion fluid detected by the i-th viscosity sensor.

[0116] The control method of the suction laryngoscope provided by the present invention is further described below in conjunction with specific embodiments.

[0117] Fifteen patients of different ages and different swallowing reflex levels were selected for the test, and the specific data are shown in Table 1. A swallowing reflex level coefficient of 1 represents a normal standard situation.

[0118] Table 1 Test data

[0119]

[0120]

[0121] The suction laryngoscope and the control method thereof of the present invention were used to perform laryngoscopy to determine the clarity of the laryngeal visual field. The results are shown in Table 2.

[0122] Table 1 Test results

[0123]

[0124]

[0125] As can be seen from Table 2, when the suction laryngoscope and the control method thereof of the present invention are used for laryngoscopy, the clarity can at least remain relatively clear (i.e., the difference between various parts of the larynx when they are relatively normal and without any lesions can be clearly distinguished), the situation of various parts of the larynx can be accurately determined, and the inspection efficiency and accuracy can be improved.

[0126] The control method of the suction laryngoscope designed and developed by the present invention can collect the area of ​​secretion liquid, and determine the extension of the telescopic rod and the absorption rate of the secretion liquid based on the CRJ neural network, so as to efficiently absorb the secretion liquid. The present invention can also accurately control the speed of the negative pressure pump, and calibrate the speed of the negative pressure pump, so as to accurately control the absorption of the secretion liquid near the laryngoscope blade.

[0127] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A suction laryngoscope, characterized in that: include: mirror handle; as well as A laryngoscope blade is arc-shaped and hinged to the blade handle, and a camera is arranged on the top of one end of the laryngoscope blade away from the blade handle; A plurality of first suction holes are symmetrically arranged on both sides of the laryngoscope blade; A plurality of second suction holes are arranged at the bottom of one end of the laryngoscope blade away from the blade handle; A pair of first suction tubes, which are symmetrically arranged inside the laryngoscope blade and have one end sealed; A plurality of second suction tubes, which are arranged inside the laryngoscope blade, one end of which passes through the second suction hole and the other end of which is connected to the other end of the first suction tube; A plurality of connecting pipes, each corresponding to the first suction holes one by one, with one end passing through the corresponding first suction hole and the other end communicating with the corresponding first suction pipe; A flow guide tube, one end of which is disposed in the laryngoscope blade and is connected to the other ends of the first suction tube and the second suction tube, and the other end of which is disposed in the blade handle; an adjusting mechanism, which is arranged between the first suction tubes and has two ends connected to the corresponding first suction tubes, and is used to adjust the distance between the first suction tubes; A containing box, which is arranged in the mirror handle and is connected with the other end of the flow guide tube; A negative pressure pump, which is fixedly disposed in the containing box and is used to provide suction; Wherein, in the initial state, one end of the connecting pipe is flush with the first suction hole; The regulating mechanism comprises: A power mechanism, which is fixedly arranged on any one of the first suction tubes; A telescopic rod, one end of which is fixedly connected to the output end of the power mechanism, and the other end of which is fixedly connected to the other first suction tube; A plurality of connecting springs, which are sleeved on the connecting tube in a one-to-one correspondence, and one end of which is fixedly connected to the inner wall of the laryngoscope blade, and the other end of which is fixedly connected to the corresponding first suction tube; Also includes: A plurality of circular grooves, which correspond to the first suction holes one by one and are evenly arranged on both sides of the laryngoscope blade; A plurality of suction sheets, which correspond to the connecting tubes one by one and are coaxially arranged on the connecting tubes located outside the laryngoscope blades; A plurality of washers, which are annular in shape, correspond to the suction sheets one by one, and are coaxially arranged on a side of the suction sheet away from the connecting pipe; Also includes: A plurality of first sealing rings, which are arranged in the first suction holes in a one-to-one correspondence, and the connecting pipe seal passes through the first sealing rings; A plurality of second sealing rings, which are arranged in the second suction holes in a one-to-one correspondence, and the second suction tube seals through the second sealing rings; Also includes: A plurality of infrared sensors, which correspond to the first suction holes one by one and are arranged on the laryngoscope blade near the groove, for detecting the area of ​​the secretion at each location; A plurality of viscosity sensors, which are arranged on the gasket in a one-to-one correspondence and are used to detect the viscosity of the secretion liquid; The controller is connected with the infrared sensor, the viscosity sensor and the power mechanism, and is used for receiving the detection data of the infrared sensor and the viscosity sensor, and controlling the operation of the power mechanism.

2. A method for controlling a suction laryngoscope, characterized in that: The area of ​​the secretion liquid is collected, and the extension amount of the telescopic rod and the absorption rate of the secretion liquid are determined based on the CRJ neural network, which specifically includes the following steps: Step 1: According to the sampling period, the area of ​​secretion fluid at each location is collected by the sensor; Step 2: Determine the input layer neuron vector of the three-layer CRJ neural network: T=(s1,s2…,s′ m ); Among them, s' m is the area of ​​secretion collected by the mth infrared sensor; Step 3: The input layer vector is mapped to the reserve pool, which has m neurons; Step 4: Get the output layer neuron vector: O=(o1,o2); Among them, o1 is the extension of the telescopic rod, and o2 is the absorption rate of the secretion fluid.

3. The control method of the suction laryngoscope according to claim 2, characterized in that: The speed of the negative pressure pump is controlled according to the absorption rate o2 of the secretion liquid to meet the following conditions: Among them, n Q is the speed of the negative pressure pump, n0 is the basic speed of the negative pressure pump, ΔP0 is the negative pressure generated when the speed of the negative pressure pump is n0, π is the pi, l1 is the axial length of the first suction tube, l2 is the axial length of the second suction tube, l0 is the axial length of the connecting tube, l3 is the axial length of the guide tube, r2 is the inner diameter of the second suction tube, r1 is the inner diameter of the first suction tube, r0 is the inner diameter of the connecting tube, r3 is the inner diameter of the guide tube, r is the blade radius of the negative pressure pump, m is the number of connecting tubes, and n is the number of second suction tubes.

4. The control method of the suction laryngoscope according to claim 3, characterized in that: Also includes: Correct the rotation speed of the negative pressure pump: Among them, η is the working efficiency of the negative pressure pump, ξ s is the viscosity of the secretion, ξ0 is the standard viscosity, ξ i is the viscosity of the secretion fluid detected by the i-th viscosity sensor.

5. The control method of the suction laryngoscope according to claim 2, characterized in that: The number of neurons in the reserve pool is 1000.

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