CN-121971762-A - Alzheimer's disease anesthetic gas self-adaptation current limiter

Abstract

The invention relates to the technical field of medical equipment, in particular to an adaptive flow limiting device for Alzheimer's disease anesthetic gas, which comprises a machine body, a display screen, a multi-parameter detector, a detection probe, a gas output device, a gas output pipe, a reversing valve, a corrugated pipe, a flow reducing mechanism, a reversing mechanism, a linkage mechanism, a driving mechanism and a limiting mechanism, wherein the flow reducing mechanism is arranged in the reversing valve and is connected with the flow reducing mechanism, the linkage mechanism is connected with the reversing mechanism, the driving mechanism is connected with the linkage mechanism, the limiting mechanism is connected with the driving mechanism, when anesthetic gas flows through the flow reducing mechanism in the reversing valve, the linkage mechanism is pressed to drive the linkage mechanism to rotate, the linkage mechanism is driven to synchronously rotate, and the flow direction of anesthetic gas in the flow reducing mechanism is changed by swinging of the reversing mechanism. According to the invention, the output concentration of the sevoflurane is adjusted according to the volatilization conditions of the sevoflurane at different temperatures, so that the phenomenon that the output gas concentration is too high under the condition that the sevoflurane volatilizes at high temperature, and the phenomenon that the brain nerve of a patient is irreversibly damaged due to excessive sevoflurane inhaled by an Alzheimer disease patient is prevented.

Inventors

• LIU LINLI
• REN XIAOYE
• WANG JIE
• Xie Lingshuang
• QIN LI
• ZHANG LINGLIN
• ZHOU YAYING
• XIONG HUAN

Assignees

• 中国人民解放军陆军军医大学第一附属医院

Dates

Publication Date

20260505

Application Date

20260123

Claims (10)

1. 1. The utility model provides an Alzheimer's disease anesthetic gas self-adaptation current limiter, includes organism (1), gas output ware (5), gas output pipe (6) and establishes ties reversing valve (7) in the anesthetic gas pipeline, reversing valve (7) inside is equipped with current-reducing mechanism (9), its characterized in that still includes: the patient state monitoring module is used for acquiring at least one physiological parameter reflecting the anesthesia safety state of the patient in real time; The integrated control module is electrically connected with the patient state monitoring module and is used for receiving the physiological parameters and generating a trigger signal at least according to a preset environmental temperature threshold or a physiological parameter safety threshold; the trigger executing mechanism is connected with the integrated control module, receives the trigger signal and can be driven to change the flow direction of anesthetic gas in the flow reducing mechanism (9), so that flow limitation is realized; The flow reducing mechanism (9) is a flow resistance structure with flow direction dependency, preferably a Tesla valve flow passage.
2. 2. The apparatus of claim 1, wherein the patient condition monitoring module comprises a blood oxygen saturation probe and/or a respiratory rate sensor, and wherein the physiological parameter safety threshold comprises a blood oxygen saturation lower limit and a respiratory rate lower limit.
3. 3. The apparatus of claim 1 or 2, wherein the integrated control module comprises an ambient temperature sensor for detecting an ambient temperature, and wherein the first trigger signal is automatically generated when the ambient temperature exceeds a first predetermined temperature threshold (e.g., 30 ℃).
4. 4. The device of claim 3, wherein the integrated control module further comprises an alarm unit, and when the physiological parameter is lower than the safety threshold, the alarm unit gives an alarm and generates a second trigger signal or enters a state to be triggered to prompt a medical staff to perform manual confirmation and operation.
5. 5. The device of claim 4, wherein the trigger actuator is an electrically controlled linear actuator, an output shaft of the trigger actuator is mechanically coupled with a screw sleeve (1203) or an L-shaped plate (1205) of the driving mechanism (12), and the trigger signal generated by the integrated control module drives the electrically controlled linear actuator to act so as to simulate manual pressing or rotating operation.
6. 6. The apparatus of claim 5, wherein the electronically controlled linear actuator is a miniature servo motor driven screw slider mechanism or a solenoid mechanism.
7. 7. The device of claim 1, wherein the trigger actuator is a manual emergency button mechanically linked to the drive mechanism (12), and the integrated control module directs the healthcare worker to press the dedicated button by illuminating an indicator light on the button or sending a voice prompt when a trigger is desired.
8. 8. The device according to claim 1, wherein the flow reducing mechanism (9) of the reversing valve (7) comprises a Tesla valve runner (901), and the trigger executing mechanism drives the reversing mechanism (10) through the linkage mechanism (11) to enable the valve core (1007) to act, so that anesthetic gas is switched from low-resistance forward flow to high-resistance reverse flow of the Tesla valve runner (901).
9. 9. The device according to claim 8, characterized in that the device has a status indicator for visually displaying the current flow direction of the gas through the down-flow means (9) (normal/restricted mode).
10. 10. The apparatus of claim 1, wherein the integrated control module has a data storage and export interface for recording the time of the trigger event, the trigger physiological parameter value, and the ambient temperature.

Description

Alzheimer's disease anesthetic gas self-adaptation current limiter Technical Field The invention relates to the technical field of medical equipment, in particular to an adaptive flow limiting device for Alzheimer's disease anesthetic gas. Background Alzheimer's disease is a neurodegenerative disease with hidden and progressive development, the core is defined as irreversible decline of cognitive function, mental behavior and daily life capacity caused by progressive injury of cerebral neurons, and is the most common type of senile dementia, and is accompanied by memory decline, decline of thinking and judging capacity, deterioration of language function, spatial perception and orientation disorder and the like, so that the condition of injury of the patient is very easy to occur in daily life, and the patient is often unable to cooperate with rescue of medical staff or family members after the injury due to the existence of cognitive dysfunction. When the Alzheimer's disease patient is injured outside the hospital and needs first aid, the patient needs to be transported to the hospital for treatment quickly, however, the patient is poor in matching willingness, in order to prevent the injury from being further expanded, the patient needs to be sedated by medicaments to reduce limb movement, the patient is extremely high due to the injury, the effect on intravenous sedative is very little, and preferably the Alzheimer's disease patient is subjected to inhalation anesthesia to quickly enter a gentle state so as to ensure the first aid efficiency; At present, most of the inhalation type anesthetics corresponding to the patients with the Alzheimer's disease are sevoflurane, the sevoflurane is in a normal volatilization state at 20-30 ℃, the discharge air pressure at the moment is relatively gentle, the output concentration of the sevoflurane is convenient to effectively control, the outdoor temperature in summer is usually higher than 30 ℃, the sevoflurane can be volatilized seriously when the temperature is higher than 30 ℃, the output air pressure and the output concentration of the sevoflurane are rapidly increased, if the patients with the Alzheimer's disease need first aid and with the help of inhalation type anesthesia at the moment, the anesthesia inhalation equipment in outdoor first aid is far less than the perfection in a first aid room, the output concentration and the pressure of the sevoflurane cannot be balanced by using compensation equipment, the concentration of the sevoflurane inhaled by the patients is too high, and irreversible damage can be caused to brain nerves of the patients, especially the patients with the Alzheimer's disease. In the prior art, for controlling the concentration of inhalation anesthetic (such as sevoflurane) in an external first-aid scene, the volatilization tank is manually adjusted according to the experience of anesthesiologists, or a simple constant flow device is used. When the anesthetic volatilizes abnormally due to high temperature, a mechanical safety device capable of automatically sensing risks and actively intervening is lacking. Meanwhile, abnormal body movement or respiratory depression may occur in the Alzheimer disease patient in a stress state, the patient can not be linked with the real-time physiological safety state of the patient by simply relying on the ambient temperature as the adjustment threshold, and the risk of adjustment lag or false triggering exists. Thus, there is a need for an adaptive current limiting device that is simple in construction, reliable, and capable of being combined with patient basic vital sign monitoring. Disclosure of Invention The invention aims to provide an adaptive flow limiting device for anesthetic gases for Alzheimer's disease, which solves the problem that excessive inhalation of sevoflurane is caused by overlarge output flow of the sevoflurane which is aggravated by overhigh temperature in a way of controlling the passing flow of sevoflurane volatile gases through a Tesla valve, and has the effect of preventing the excessive inhalation of sevoflurane when the patient with Alzheimer's disease uses inhalation anesthesia outside a hospital. In order to achieve the above purpose, the present invention provides the following technical solutions: The sevoflurane has the advantages of mild influence on the central nervous system, small cognitive function interference and high safety, becomes the preference of anesthesia of Alzheimer's disease patients, has the core advantages of lighter influence on the cognitive function, light burden on liver and kidney functions, suitability for the condition of hypofunction of viscera possibly existing in senile dementia patients, quick recovery of sevoflurane, low incidence rate of delirium after operation, capability of reducing further damage to residual cognitive function, strong controllability of central inhibition effect, easy regulation of anesthesia depth, capability of