Thickener screening method and system for people with dysphagia

Abstract

The present application provides a thickener screening method and system for people with dysphagia, the method comprising the following steps: constructing a thickening fluid system with the same IDDSI level; obtaining the performance parameters of key indicators of each thickener in the thickening fluid system; constructing a comprehensive score weighted model for thickener swallowing performance; inputting the performance parameters of key indicators of each thickener in the thickening fluid system with the same IDDSI level into the comprehensive score weighted model to obtain a comprehensive score for the swallowing performance of each thickener combination; based on the obtained comprehensive score of the swallowing performance of each thickener, screening the thickener with the best swallowing performance. Based on a thickening fluid system with the same IDDSI level, the present application measures and further screens the swallowing-related characteristics of each thickener in the thickening fluid system to obtain the best thickener, breaking through the limitations of selecting suitable thickeners based on IDDSI level, and is conducive to providing a richer and more reasonable diet combination for people with dysphagia.

Description

Technical Field

[0001] The present application relates to the technical field of food screening for people with dysphagia, and specifically to a thickener screening method and system for people with dysphagia. Background Art

[0002] The increase in life expectancy and the decline in mortality rates in the world's population have led to an increasingly rapid aging process, and changes in the age structure of the population have driven huge demand for health care products and services. Due to physiological changes such as decreased chewing ability, decreased muscle strength, and slow neural regulation, the elderly may experience problems such as slow epiglottis closure and insufficient tongue muscle strength to push the food bolus, resulting in swallowing disorders (Giura et al 2021, Sun-Waterhouse et al 2021). Swallowing disorders have many adverse effects, such as aspiration, choking, aspiration pneumonia, malnutrition, and dehydration. The widespread use of thickeners or texture improvement methods that affect food properties (such as reducing hardness and increasing cohesion) can reduce the probability of the above adverse effects and enrich the dietary choices of people with swallowing disorders (Rodd et al 2021).

[0003] Currently, most of the existing dysphagia foods are developed according to the dietary texture grades classified by the International Dysphagia Food Standards Committee, and powdered thickeners are dominant, with the IDDSI (International Dysphagia Diet Standardisation Initiative) grade as the evaluation standard. For the thickening of specific fluid foods, it is necessary to select a suitable thickener combination. The internationally widely used IDDSI grade uses a simple gravity flow test to grade the fluid texture (viscosity), which can be used as one of the methods for evaluating thickened fluid systems. However, in addition to viscosity, factors that affect the safety of fluid swallowing also include density and surface tension. Studies have shown (Zhong Lei et al. 2018) that thickened fluids with the same IDDSI grade have significant differences in density, surface tension and modulus. Therefore, for companies and research institutes that develop easy-to-swallow products, there are obvious limitations in selecting suitable thickeners based solely on the IDDSI grade. Summary of the invention

[0004] The present application provides a thickener screening method and system for people with dysphagia, which can solve the technical problem in the prior art that there are obvious limitations in selecting a suitable thickener for dysphagia based only on the IDDSI grade.

[0005] In a first aspect, the present application provides a method for screening thickeners for people with dysphagia, comprising the following steps:

[0006] Construct a thickening fluid system with the same IDDSI grade;

[0007] Obtain the performance parameters of key indicators of each thickener in the thickening fluid system;

[0008] To construct a weighted model of the composite score of thickener swallowing performance;

[0009] Input the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI grade into the comprehensive score weighted model of the thickener swallowing performance to obtain the comprehensive score of the swallowing performance of each thickener;

[0010] According to the obtained comprehensive scores of swallowing performance of each thickener, the thickener with the best swallowing performance is screened.

[0011] In combination with the first aspect, in one embodiment, the performance parameters for obtaining the key indicators of each thickener in the thickening fluid system include surface tension, zero shear viscosity, η50, hardness, cohesion, solid content, density, yield stress, and adhesion.

[0012] In combination with the first aspect, in one embodiment, constructing a comprehensive score weighted model for thickener swallowing performance includes:

[0013] Establish a judgment matrix;

[0014] Perform consistency check on the judgment matrix and obtain consistency check result;

[0015] When the consistency check of the matrix passes, the weight coefficient of the key indicator is obtained;

[0016] The values ​​of key indicators were normalized, and a comprehensive score weighted model for thickener swallowing performance was established based on the weight coefficients of each key indicator.

[0017] In combination with the first aspect, in one implementation, establishing the judgment matrix includes:

[0018] Get a comparison table of element importance descriptions and levels;

[0019] Using the comparison table of element importance description and importance level, a judgment matrix of performance indicators for thickening fluid system is established.

[0020] In combination with the first aspect, in one implementation, performing a consistency check on the judgment matrix and obtaining a consistency check result includes:

[0021] Obtain the product of the importance levels of each row of the key indicator in the judgment matrix relative to other key indicators, and obtain the product of the importance levels of the key indicators;

[0022] Calculate the nth root of the product of the importance levels of the key indicators, where n is the total number of key indicators;

[0023] Obtain the characteristic vector of the nth root of the product of the importance levels of the key indicators;

[0024] Performing vector regularization processing on the acquired feature vector to obtain a vector regularization result;

[0025] According to the obtained vector regularization result, the judgment matrix is ​​checked for consistency to obtain a consistency check calculation value;

[0026] According to the consistency comparison check value and the consistency check standard value, the consistency check result of the judgment matrix is ​​obtained.

[0027] In combination with the first aspect, in one embodiment, the thickener combination used to construct the thickened fluid system with the same IDDSI grade is selected from one or more of SS1, SS2, carboxymethyl cellulose, xanthan gum and guar gum.

[0028] In a second aspect, the present application provides a thickener screening system for people with dysphagia, comprising:

[0029] System building module, used to build thickening fluid system with the same IDDSI level;

[0030] Performance parameter acquisition module, used to obtain the performance parameters of key indicators of each thickener in the thickening fluid system

[0031] A model building module for constructing a comprehensive score weighted model of thickener swallowing performance;

[0032] A comprehensive score acquisition module, which is in communication with the performance parameter acquisition module and the model building module, and is used to input the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI level into the comprehensive score weighted model of the thickener swallowing performance, and obtain the comprehensive score of the swallowing performance of each thickener;

[0033] The screening module is in communication with the comprehensive score acquisition module and is used to screen the thickener with the best swallowing performance according to the obtained comprehensive scores of the swallowing performance of each thickener.

[0034] In conjunction with the second aspect, in one implementation, the model building module includes:

[0035] A judgment matrix establishing unit, used for establishing a judgment matrix;

[0036] A consistency check module is used to establish a unit communication connection with the judgment matrix, and is used to perform a consistency check on the judgment matrix and obtain a consistency check result;

[0037] A weight coefficient acquisition unit, which is in communication with the consistency check module and is used to obtain the weight coefficient of the key indicator when the consistency check of the matrix passes;

[0038] The model building unit is connected to the weight coefficient acquisition unit for normalizing the values ​​of the relationship indicators and establishing a comprehensive score weighted model for thickener swallowing performance according to the weight coefficients of the key indicators.

[0039] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:

[0040] The thickener screening method for people with dysphagia provided in the present application measures and further screens the swallowing-related characteristics of each thickener in the thickened fluid system on the basis of a thickening fluid system of the same IDDSI level to obtain the best thickener, breaking through the limitation of selecting suitable thickeners according to IDDSI level, and is conducive to providing people with dysphagia with a richer and more reasonable diet combination. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of a method flow of a thickener screening method for people with dysphagia provided in an embodiment of the present application;

[0042] Figure 2 A diagram of simulated swallowing conditions showing the swallowing performance of different thickeners provided in the embodiments of the present application;

[0043] Figure 3 This is a functional module block diagram of the thickener screening system for people with dysphagia in this application. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit "first", "second" and "third" to different types.

[0046] In the description of the embodiments of the present application, "exemplary", "for example" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary", "for example" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[0047] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; the “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0048] In some processes described in the embodiments of the present application, multiple operations or steps that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0049] First, please refer to Figure 1 The present application provides a thickener screening method for people with dysphagia, comprising the following steps:

[0050] Step S1, constructing a thickening fluid system with the same IDDSI level;

[0051] Step S2, obtaining performance parameters of key indicators of each thickener in the thickening fluid system;

[0052] Step S3, constructing a comprehensive score weighted model for thickener swallowing performance;

[0053] Step S4, inputting the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI level into the comprehensive score weighted model of the thickener swallowing performance, and obtaining the comprehensive score of the swallowing performance of each thickener;

[0054] Step S5: screening a thickener with the best swallowing performance according to the obtained comprehensive scores of the swallowing performance of each thickener.

[0055] The thickener screening method for people with dysphagia provided in the present application measures and further screens the swallowing-related characteristics of each thickener in the thickened fluid system on the basis of a thickening fluid system of the same IDDSI level to obtain the best thickener, breaking through the limitation of selecting suitable thickeners according to IDDSI level, and is conducive to providing people with dysphagia with a richer and more reasonable diet combination.

[0056] In one embodiment, according to clinical observations (Su et al 2018), for patients with mild dysphagia, a thickening fluid with an IDDSI grade of 1-2 can improve their swallowing safety; for patients with moderate or severe dysphagia (who can be orally ingested), a low viscosity (IDDSI grade 1-2) thickening fluid may cause choking, a high viscosity (IDDSI grade 4) thickening fluid is prone to oropharyngeal residue, and a relatively high viscosity (IDDSI grade 3) thickening fluid can reduce the risk of aspiration and reduce oropharyngeal residue. The thickener combination in step S1, constructing a thickening fluid system with the same IDDSI grade, is selected from one or more of commercially available thickener 1 (modified starch base, SS1), commercially available thickener 2 (modified starch and gum base compound, SS2), carboxymethyl cellulose (Carboxymethyl Cellulose, CMC), xanthan gum (XG) and guar gum (Guar Gum, GG).

[0057] In a more specific embodiment, the step S1, constructing a thickening fluid system with the same IDDSI level, is specifically implemented as follows:

[0058] By controlling the amount of thickener added, the IDDSI level of each thickened fluid is made to be level 3 (9 mL remaining in the syringe), and the solid content required for each thickened fluid system to reach the IDDSI level 3 is determined;

[0059] More specifically, weigh the thickener powder, and commercial thickeners are accurately converted to mass (g) according to the product label instructions. Prepare a pre-weighed amount of deionized water in a beaker and pour it into the beaker placed on a magnetic stirring device, which is turned on to create a vortex. The weighed thickener is gradually added to the liquid vortex, and the magnetic stirrer is used to stir at a fixed speed for a fixed time to ensure that the thickener is visibly dissolved. The solution is allowed to stand for 10 minutes and then stirred at a similar shear rate for 30 seconds.

[0060] Take a BDTM 10mL syringe with the needle and piston removed and place it vertically. Block the tip of the syringe with your finger, add the sample solution to the syringe to above the 10mL mark, remove the bubbles at the tip of the syringe and adjust the sample solution in the syringe to the 10mL mark. Remove your finger and press the timer at the same time. Observe and record the remaining volume of the sample solution in the syringe after 10s. Test three times in parallel and take the average value (Hanson et al 2019). After measuring the IDDSI, adjust the level according to the level, and control the IDDSI level of the fluid thickened by each thickener to level 3 (9mL of fluid remaining in the syringe).

[0061] In one embodiment, the performance parameters of the key indicators of each thickener in the thickening fluid system obtained in step S2 include surface tension, zero shear viscosity, η50, hardness, cohesion, solid content, density, yield stress, and adhesion.

[0062] In a more specific embodiment, in the step S2, obtaining the performance parameters of the key indicators of each thickener in the thickening fluid system:

[0063]

Solid content of thickening fluid system

[0064] Obtained by weighing in step S1.

[0065] [The density of the thickening fluid system is determined as follows]

[0066] Use a densitometer to measure the density of different thickened fluids. Take 300mL of thickened fluid sample and put it into a transparent glass container. Float the densitometer with a range of 1.000kg / m3–1.100kg / m3 in the fluid. When the densitometer is stable and no longer sinks, record the densitometer scale corresponding to the liquid surface, which is the density of the thickened fluid.

[0067] [The surface tension of the thickening fluid system is determined as follows]

[0068] Principle: Surface tension is a property of a liquid surface that resists external forces due to its molecular cohesion. During swallowing, the stretching deformation of the food bolus is usually accompanied by surface deformation, so surface tension is an important factor affecting swallowing.

[0069] Method: Each sample was placed in a glass beaker and kept stable for about 3 hours (brown rice paste was stable for 30 minutes) to reach equilibrium, and a tensiometer was used to measure the force required to pull the platinum iridium plate from the fluid surface. The surface tension was calculated by the following equation:

[0070] γ=F / (cosθ×l) (1)

[0071] Where γ is the surface tension (mN / m), l is the length (m), F is the force (mN), and θ is the contact angle (°).

[0072] Table 1 Solid content, density and surface tension of different thickening fluid systems under IDDS I 3 level

[0073]

[0074]

[0075] Note: SS1 and SS2 in the sample names are two commercially available thickeners, CMC is carboxymethyl cellulose, XG is xanthan gum, and GG is guar gum. Data are expressed as mean ± standard deviation.

[0076] [The steady-state rheological properties of the thickening fluid system are determined as follows, which are used to determine the yield stress and zero shear viscosity]

[0077] Principle: The rheology of the fluid and the propulsive forces exerted by the oropharyngeal musculature work together to achieve a safe swallowing process. Based on this coordination, the rheology of the fluid is considered to be the most important aspect of swallowing disorder management (Zargaraane et al 2013). The magnitude of zero shear viscosity is a macroscopic indicator of the microscopic conformation of the biopolymer (Alvarez- et al 2008), it may be related to the perceived viscosity at near-resting state, which usually occurs when the fluid is first received by the tongue.

[0078] Method: Steady shear rheological tests were performed using a rotational rheometer. A 40 mm diameter aluminum cone plate was used for testing at 25 °C and the test was allowed to stand for 2 min before each test to achieve equilibrium. The test shear rate was selected from 1–1000 s -1 The shear viscosity and shear stress under the condition of , and the yield stress is fitted using the Herschel-Bulkley model (Equation 2)

[0079] τ=τ0+kγ n (2)

[0080] Where τ0 is the yield stress (Pa); k is the consistency coefficient (Pa·sn); γ is the shear rate (s -1 ); n is the flow index.

[0081] The shear viscosity at a shear rate of 0.001–1000 s-1 was selected for testing, and the zero shear viscosity was fitted using the Carreau model (Equation 3).

[0082]

[0083] Where η is the apparent viscosity (Pa·s); η0 is the zero shear viscosity (Pa·s); η ∞ is the infinite shear viscosity (Pa·s); λ is the time constant; γ is the shear rate (s -1 ); n is the flow index.

[0084] Table 2 Yield stress and η of commercial thickening fluids 50 and zero shear viscosity (IDDSI level 3)

[0085]

[0086]

[0087] Note: SS1 and SS2 in the sample names are two commercially available thickeners, CMC is carboxymethyl cellulose, XG is xanthan gum, and GG is guar gum. Data are expressed as mean ± standard deviation.

[0088] [The textural properties of the thickened fluid system are determined as follows, used to determine hardness, cohesion and adhesion]

[0089] Principle: Cohesion describes the degree of mechanical force required to break up the internal structure of a material and can be described as the strength of the internal bonds that make up the main system of the product (Szczesniak 1963). Fluids with low cohesion run the risk of breaking (or splashing) into multiple droplets, which may lead to aspiration. In addition, there is a risk that some fluid may remain in the pharynx, requiring multiple swallows to clear the residue, which may cause muscle fatigue and increase the risk of aspiration. However, it should be noted that fluids with too high cohesion are not good for patients with swallowing disorders. Too high cohesion may cause dysphagia due to the high resistance to tensile deformation, especially for those who have weak tongue muscles and can only generate low oral pressures.

[0090] Method: Texture properties were evaluated using a physical analyzer (TA.XT.Plus) by performing a reverse extrusion test at room temperature of 25°C using a 5 kg load cell. An extrusion disc (35 mm) was located in the center of a container containing 100 mL of sample and the disc penetrated the sample to a depth of 20 mm at a test speed of 0.5 mm / s. The maximum force (g) used to reach this depth is a measure of hardness. The maximum negative force when the probe was pulled up at a speed of 0.5 mm / s is an indication of cohesion. Surface adhesion was determined by pulling the disc toward the sample at a speed of 0.5 mm / s. The disc was then fixed to the sample surface for 30 s and pulled away at a speed of 2 mm / s. The force (g) to remove the disc from the sample indicates surface adhesion.

[0091] Table 3 Hardness, adhesion and cohesion of thickened fluid (IDDSI level 3)

[0092]

[0093] Note: SS1 and SS2 in the sample names are two commercially available thickeners, CMC is carboxymethyl cellulose, XG is xanthan gum, and GG is guar gum. Data are expressed as mean ± standard deviation.

[0094] In one embodiment, the step S3, constructing a comprehensive score weighted model for thickener swallowing performance, comprises:

[0095] S31, establishing a judgment matrix;

[0096] S32, performing consistency check on the judgment matrix to obtain a consistency check result;

[0097] S33. When the consistency check of the matrix passes, the weight coefficient of the key indicator is obtained;

[0098] S34. Normalize the values ​​of key indicators and establish a comprehensive score weighted model for thickener swallowing performance based on the weight coefficients of each key indicator.

[0099] In one embodiment, the step S31, establishing a judgment matrix, includes:

[0100] S311. Obtain a comparison table of element importance descriptions and levels, as shown in Table 4:

[0101] Table 4 Element importance ratio table

[0102]

[0103] S312. Using the comparison table of element importance description and importance level, a judgment matrix of performance indicators for the thickening fluid system is established, as shown in Table 5:

[0104] Table 5 Judgment matrix of key indicators of thickener

[0105]

[0106]

[0107] In one embodiment, the step S32 of performing a consistency check on the judgment matrix and obtaining a consistency check result includes:

[0108] Get the product of the importance level of each key indicator in each row of the judgment matrix relative to other key indicators, and get the product of the importance level of the key indicators n is the number of indicators, a i,j Represents the element in the i-th row and j-th column of A.

[0109] Calculate the nth root of the product of the importance levels of key indicators n is the number of indicators; obtain the characteristic vector of the nth root of the product of the importance levels of the key indicators Calculate the characteristic roots of matrix A, that is Calculate the maximum eigenvalue λmax of the judgment matrix;

[0110] Perform vector regularization on the acquired feature vector to obtain the vector regularization result:

[0111]

[0112] According to the obtained vector regularization result, the judgment matrix is ​​checked for consistency and the consistency check calculation value is obtained:

[0113] CI = (λmax-n) / (n-1),

[0114] in,

[0115] Where (AW)i is the i-th element of AW;

[0116] According to the consistency comparison check value and the consistency check standard value, the consistency check result of the judgment matrix is ​​obtained. Specifically, the random consistency standard value is queried. When CR = CI / RI = 0.029 / 1.451 = 0.02 < 0.1, where CI = (λmax-n) / (n-1), CI is the consistency index, CR is the consistency ratio, and RI is the random consistency index, when CR = CI / RI < 0.1, it is determined that the established judgment matrix has satisfactory consistency. According to the judgment matrix with satisfactory consistency, the weight coefficients of each key indicator are calculated to screen the thickener with the best swallowing performance.

[0117] In one embodiment, S34, the values ​​of the key indicators are normalized, and a comprehensive score weighted model of the thickener swallowing performance is established according to the weight coefficient of each key indicator.

[0118] Table 6 Normalization of key indicators of thickener

[0119]

[0120] Note: SS1 and SS2 in the sample names are two commercially available thickeners, CMC is carboxymethyl cellulose, XG is xanthan gum, and GG is guar gum.

[0121] Table 7 Weight coefficients of key indicators of thickeners

[0122]

[0123] According to the weight coefficients of each key indicator, the comprehensive score weighted model of thickener swallowing performance is established as follows:

[0124] Y = 0.128 × surface tension + 0.177 × zero shear viscosity + 0.177 × η50 + 0.054 × hardness + 0.063 × cohesion - 0.064 × solid content - 0.098 × density - 0.113 × yield stress - 0.126 × adhesion.

[0125] Wherein, Y is the comprehensive score of swallowing performance of each thickener.

[0126] The comprehensive scores of swallowing performance of each thickener are shown in Table 8.

[0127] Table 8 Comprehensive score of swallowing performance of thickeners

[0128]

[0129]

[0130] Note: SS1 and SS2 in the sample names are two commercially available thickeners, CMC is carboxymethyl cellulose, XG is xanthan gum, and GG is guar gum.

[0131] As shown in Table 8, the thickener SS1 has the highest comprehensive score for swallowing performance, followed by CMC, GG, XG, and SS2. Therefore, the thickener with the best swallowing performance is SS1.

[0132] In one embodiment, after the step S5 of screening the thickener with the best swallowing performance according to the obtained comprehensive scores of the swallowing performance of each thickener, the following steps are further included:

[0133] Verify the swallowing properties of the thickener, specifically by:

[0134] The swallowing process of five thickeners was simulated by computer simulation, and their swallowing performance was analyzed. Figure 2 It can be seen that when the fluid is swallowed near the epiglottis, SS2 has obvious splashing, the SS1 thickened fluid has a strong cohesive force and the fluid is more aggregated, followed by CMC, and the states of GG and XG are similar. Analysis of the aspirated particles in the later stage of fluid swallowing found that SS1, CMC and GG had no aspiration phenomenon, XG had fewer aspirated particles and SS2 had obvious aspiration. Based on the aspiration of the thickened fluid and the state of the fluid near the epiglottis, it can be concluded that the thickeners with better swallowing properties are ranked as follows: SS1, CMC, GG, XG, SS2. This order is consistent with the above-mentioned comprehensive score results of swallowing performance, proving that the thickener screening method for people with dysphagia provided in this application is effective.

[0135] Second, please refer to Figure 3 The present application provides a thickener screening system for people with swallowing disorders, including a system establishment module 100, a performance parameter acquisition module 200, a model construction module 300, a comprehensive score acquisition module 400 and a screening module 500. The system establishment module 100 is used to construct a thickening fluid system with the same IDDSI level; the performance parameter acquisition module 200 is used to obtain the performance parameters of the key indicators of each thickener in the thickening fluid system; the model construction module 300 is used to construct a comprehensive score weighted model for thickener swallowing performance; the comprehensive score acquisition module 400 is communicated with the performance parameter acquisition module 200 and the model construction module 300, and is used to input the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI level into the comprehensive score weighted model for thickener swallowing performance to obtain the comprehensive score of the swallowing performance of each thickener; the screening module 500 is communicated with the comprehensive score acquisition module 400, and is used to screen the thickener with the best swallowing performance according to the obtained comprehensive scores of the swallowing performance of each thickener.

[0136] In one embodiment, the model building module includes:

[0137] A judgment matrix establishing unit, used for establishing a judgment matrix;

[0138] A consistency check module is used to establish a unit communication connection with the judgment matrix, and is used to perform a consistency check on the judgment matrix and obtain a consistency check result;

[0139] A weight coefficient acquisition unit, which is in communication with the consistency check module and is used to obtain the weight coefficient of the key indicator when the consistency check of the matrix passes;

[0140] The model building unit is connected to the weight coefficient acquisition unit for normalizing the values ​​of the relationship indicators and establishing a comprehensive score weighted model for thickener swallowing performance according to the weight coefficients of the key indicators.

[0141] In a third aspect, an embodiment of the present application also provides a readable storage medium.

[0142] The readable storage medium of the present application stores a thickener screening program for people with dysphagia, wherein when the thickener screening program for people with dysphagia is executed by a processor, the steps of the thickener screening method for people with dysphagia as described above are implemented.

[0143] Among them, the method implemented when the thickener screening program for people with dysphagia is executed can refer to the various embodiments of the thickener screening method for people with dysphagia in this application, and will not be repeated here.

[0144] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0145] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, disk, CD) as described above, and includes a number of instructions for a terminal device to execute the methods described in each embodiment of the present application.

[0146] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for screening thickeners for people with dysphagia, characterized in that: The following steps are involved: Constructing a thickening fluid system with the same IDDSI grade, wherein the thickening agent combination in the thickening fluid system with the same IDDSI grade is selected from one or more of modified starch-based SS1, modified starch and gum-based composite SS2, carboxymethyl cellulose, xanthan gum and guar gum; Obtaining performance parameters of key indicators of each thickener in the thickening fluid system, the performance parameters including surface tension, zero shear viscosity, η50, hardness, cohesion, solid content, density, yield stress and adhesion; To construct a weighted model of the composite score of thickener swallowing performance; Input the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI grade into the comprehensive score weighted model of the thickener swallowing performance to obtain the comprehensive score of the swallowing performance of each thickener; According to the obtained comprehensive scores of swallowing performance of each thickener, a thickener with the best swallowing performance is selected; The comprehensive score weighted model for constructing thickener swallowing performance includes: Establish a judgment matrix; Perform consistency check on the judgment matrix and obtain consistency check result; When the consistency check of the matrix passes, the weight coefficient of the key indicator is obtained; The values ​​of key indicators were normalized, and a comprehensive score weighted model for thickener swallowing performance was established based on the weight coefficients of each key indicator. The establishment of the judgment matrix comprises: Get a comparison table of element importance descriptions and levels; Using the comparison table of element importance description and importance level, a judgment matrix of performance indicators for thickening fluid system is established; The performing consistency check on the judgment matrix and obtaining the consistency check result comprises: Obtain the product of the importance levels of each row of the key indicator in the judgment matrix relative to other key indicators, and obtain the product of the importance levels of the key indicators; Calculate the nth root of the product of the importance levels of the key indicators, where n is the total number of key indicators; Obtain the characteristic vector of the nth root of the product of the importance levels of the key indicators; Performing vector regularization processing on the acquired feature vector to obtain a vector regularization result; According to the obtained vector regularization result, the judgment matrix is ​​checked for consistency to obtain a consistency check calculation value; According to the consistency comparison check value and the consistency check standard value, the consistency check result of the judgment matrix is ​​obtained.

2. A thickener screening system for people with dysphagia, characterized in that: include: System building module, used to build thickening fluid system with the same IDDSI level; Performance parameter acquisition module, used to obtain the performance parameters of key indicators of each thickener in the thickening fluid system A model building module for constructing a comprehensive score weighted model of thickener swallowing performance; A comprehensive score acquisition module, which is in communication with the performance parameter acquisition module and the model building module, and is used to input the performance parameters of the key indicators of each thickener in the thickening fluid system with the same IDDSI level into the comprehensive score weighted model of the thickener swallowing performance, and obtain the comprehensive score of the swallowing performance of each thickener; A screening module, which is in communication with the comprehensive score acquisition module and is used to screen a thickener with the best swallowing performance according to the obtained comprehensive scores of the swallowing performance of each thickener; The model building module includes: A judgment matrix establishing unit, used for establishing a judgment matrix; A consistency check module, which establishes a unit communication connection with the judgment matrix, is used to perform a consistency check on the judgment matrix and obtain a consistency check result; A weight coefficient acquisition unit, which is in communication with the consistency check module and is used to obtain the weight coefficient of the key indicator when the consistency check of the matrix passes; A model building unit, which is in communication connection with the weight coefficient acquisition unit, is used to normalize the values ​​of the relationship indicators and establish a comprehensive score weighted model of thickener swallowing performance according to the weight coefficients of each key indicator; The thickener screening system for people with dysphagia implements the steps of the thickener screening method for people with dysphagia as claimed in claim 1.

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