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CN-121979330-A - Constant-temperature heating method for air passage management equipment and air passage management equipment

CN121979330ACN 121979330 ACN121979330 ACN 121979330ACN-121979330-A

Abstract

The invention discloses a constant-temperature heating method of airway management equipment, which comprises the following steps of obtaining initial temperature, target temperature, flow rate and pipeline cross-sectional area of brine, constructing a thermodynamic model, calculating heating current based on the thermodynamic model to obtain the relation between the heating current and the temperature rise degree of the brine, introducing a heat loss factor, correcting the thermodynamic model, and controlling the temperature of the brine to be stabilized in a target range according to a calculation result. The invention also discloses airway management equipment. The invention solves the technical problems of inaccurate control of the temperature of the brine in the air passage management equipment and poor comfort level of users.

Inventors

  • DAI ZHENG
  • ZHANG LINCHAO
  • AI YANQIN

Assignees

  • 湖南明康中锦医疗科技股份有限公司

Dates

Publication Date
20260505
Application Date
20251231

Claims (9)

  1. 1. A constant temperature heating method of an airway management device, comprising the steps of: S1, acquiring an initial temperature, a target temperature, a flow rate and a pipeline cross-sectional area of brine; s2, constructing a thermodynamic model, and calculating heating current based on the thermodynamic model to obtain a relation between the heating current and the temperature rise degree of the brine; s3, introducing a heat loss factor, correcting the thermodynamic model, and controlling the temperature of the brine to be stabilized in a target range according to a calculation result.
  2. 2. The method for constant temperature heating of an airway management device according to claim 1, wherein the mass of the brine is: ; Wherein, the For the quality of the brine, the water is, For the flow rate of the brine, Is the cross-sectional area of the brine pipeline, In order to achieve the density of the brine, Is time.
  3. 3. The method according to any one of claims 1-2, wherein the thermodynamic model is constructed in step S2, specifically: ; Wherein, the In order to heat the current flow, In order to heat the electrical resistance of the component, In order to be able to take time, For the flow rate of the brine, Is the cross-sectional area of the brine pipeline, In order to achieve the density of the brine, Is the specific heat capacity of the brine, In order to achieve the target temperature of the product, Is the current temperature of the brine.
  4. 4. A method of constant temperature heating of an airway management device according to claim 3, wherein the relationship between the heating current and the degree of temperature increase of the brine is: ; Wherein, the The temperature is raised to a degree.
  5. 5. A method of constant temperature heating of an airway management device according to any of claims 1-2, characterized in that the heat loss factor is obtained by experimental calibration, in particular by measuring the ratio of the actual heating power to the theoretical heating power at different flow rates.
  6. 6. The method of claim 5, wherein the heat loss factor is: ; Wherein, the As a factor of the heat loss, For the theoretical heating power, the heating power is, Is the actual heating power.
  7. 7. An airway management device comprising a method of constant temperature heating of an airway management device according to any one of claims 1 to 6, comprising: The system comprises a host end and a patient end pipeline, wherein the host end is connected with the patient pipeline; The system comprises a host end, a heating component, a peristaltic pump, a heating component, a heating sensor, a first sensor and a second sensor, wherein the host end comprises an MCU, a driving module, a power supply and the peristaltic pump, the MCU is connected with the driving module, the power supply and the peristaltic pump respectively, the driving module is connected with the heating component, the MCU is connected with the first sensor and the second sensor, the peristaltic pump is connected with a saline pipeline, the patient pipeline comprises a saline pipeline, the heating component, the first sensor and the second sensor are arranged on the saline pipeline, the first sensor is used for detecting the temperature of saline before heating, and the second sensor is used for detecting the temperature of saline after heating.
  8. 8. An airway management apparatus comprising a method of constant temperature heating of an airway management apparatus as claimed in claim 7, wherein the heating means is a heating wire.
  9. 9. An airway management apparatus comprising a constant temperature heating method of the airway management apparatus according to claim 7, wherein the first temperature sensor and the second temperature sensor are provided at both front and rear ends of the heating region of the heating member, respectively.

Description

Constant-temperature heating method for air passage management equipment and air passage management equipment Technical Field The invention relates to the technical field of airway management equipment, in particular to a constant-temperature heating method of airway management equipment and the airway management equipment. Background Airway management devices are widely used in clinical medicine for respiratory tract irrigation and sputum removal. At present, the conventional airway management device mainly cleans the respiratory tract of a patient by means of saline flushing, but the prior art has a remarkable defect of lacking accurate control of the temperature of flushing saline. The saline is typically at a temperature consistent with ambient temperature (about 20-25 ℃) prior to entering the patient, while the temperature inside the body is about 37 ℃. When low-temperature saline contacts with respiratory mucosa, local vasoconstriction can be caused, so that uncomfortable reactions such as cough, expectoration and the like can be caused for patients, and the treatment effect can be affected seriously. In the prior art, some medical devices attempt to warm the liquid by a simple heating device, but none is optimized for the particularities of airway management scenarios. Patent document No. cn202510914147.X discloses an infusion heating device, in which the heating object is an intravenous infusion flowing at a low speed, and the control strategy adjusts the heating power only based on the difference between the target temperature and the initial temperature, without considering dynamic factors such as the liquid flow rate, heat loss, and the like. The saline flushing in the airway management has the characteristics of large flow speed fluctuation (controlled by a peristaltic pump), obvious heat dissipation of a pipeline and the like, if the conventional heating method is directly applied, temperature control is delayed or overshooting can be caused, and the saline temperature cannot be stably maintained within a comfortable range (35-37 ℃). Therefore, it is needed to provide a constant temperature heating method for an air passage management device and the air passage management device, which solve the technical problems of inaccurate control of the saline temperature and poor comfort level of users in the air passage management device. Disclosure of Invention The invention mainly aims to provide a constant-temperature heating method of air passage management equipment and the air passage management equipment, and aims to solve the technical problems of inaccurate control of the temperature of brine in the air passage management equipment and poor comfort level of users. In order to achieve the above object, the present invention provides a constant temperature heating method of an air passage management apparatus, wherein the constant temperature heating method of the air passage management apparatus comprises the following steps: S1, acquiring an initial temperature, a target temperature, a flow rate and a pipeline cross-sectional area of brine; s2, constructing a thermodynamic model, and calculating heating current based on the thermodynamic model to obtain a relation between the heating current and the temperature rise degree of the brine; s3, introducing a heat loss factor, correcting the thermodynamic model, and controlling the temperature of the brine to be stabilized in a target range according to a calculation result. In one of the preferred schemes, the mass of the brine is as follows: Wherein, the For the quality of the brine, the water is,For the flow rate of the brine,Is the cross-sectional area of the brine pipeline,In order to achieve the density of the brine,Is time. In one preferred embodiment, the thermodynamic model is constructed in step S2, specifically: Wherein, the In order to heat the current flow,In order to heat the electrical resistance of the component,In order to be able to take time,For the flow rate of the brine,Is the cross-sectional area of the brine pipeline,In order to achieve the density of the brine,Is the specific heat capacity of the brine,In order to achieve the target temperature of the product,Is the current temperature of the brine. In one of the preferred schemes, the relation between the heating current and the temperature rise degree of the brine is as follows: Wherein, the The temperature is raised to a degree. In one preferred embodiment, the heat loss factor is obtained through experimental calibration, in particular, the ratio of the actual heating power to the theoretical heating power is measured at different flow rates. In one of the preferred embodiments, the heat loss factor is: Wherein, the As a factor of the heat loss,For the theoretical heating power, the heating power is,Is the actual heating power. An airway management apparatus including the constant temperature heating method of an airway management apparatus, comprising: The system com