Controllable cooling brain protection device in nasal cavity

Abstract

The utility model belongs to the technical field of medical instruments, and provides a controllable nasal cavity cooling brain protection device, which comprises a cooling mechanism, a nasal cavity cooling mechanism and a nasal cavity cooling mechanism, and the nasal cavity cooling mechanism comprises a pressurizing cooling tank and an intubation tube assembly which is provided with at least one hose capable of being inserted into the nasal cavity and a flow regulating valve; the temperature measuring mechanism is provided with at least one temperature measuring probe capable of extending into the auditory meatus tympanic chamber; and the control mechanism is used for adjusting the conveying flow of the cooling spray through the flow adjusting valve according to the tympanic membrane temperature data detected by the temperature measuring probe. The controllable cooling brain protection device in the nasal cavity is convenient to carry, can be used for carrying out brain hypothermia treatment protection on site or in the transportation process, shortens the intervention opportunity of hypothermia treatment on a patient, reduces brain tissue damage caused by brain temperature rise, improves the neurological function prognosis condition of the patient, and meanwhile, can be used for protecting the patient. The brain temperature change is monitored in real time through the temperature measuring mechanism, and the conveying amount of the cooling spray is adjusted according to feedback, so that the brain temperature is maintained at a constant level.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a controllable intracranial hypothermia brain protection device for nasal cavity. Background Art

[0002] Brain tissue injury is divided into primary injury and secondary injury. The primary injury occurs immediately at the onset of the disease and is often unable to be intervened. The secondary injury is often caused by neuroinflammatory reaction, insufficient cerebral oxygen supply or increased oxygen consumption, etc. Regulating the neuroinflammatory reaction and improving the balance between oxygen supply and consumption can play a role in reducing the secondary injury. An increase in brain temperature can cause an increase in brain electrical activity and cerebral oxygen consumption, and can also increase the inflammatory reaction and blood-brain barrier permeability, which is an important cause of severe secondary brain injury. Clinically, mild hypothermia treatment is often used to enable dying nerve cells to survive, and the earlier the mild hypothermia intervention, the better the effect.

[0003] Currently, due to the limitations of mild hypothermia equipment (usually ice blankets or intravascular hypothermia), for patients with mild hypothermia indications such as craniocerebral trauma and out-of-hospital cardiac arrest cardiopulmonary resuscitation, mild hypothermia in clinical practice is limited to treatment in the intensive care unit after hospitalization, and it cannot be implemented in pre-hospital first aid, the emergency department, during emergency surgery, or during transportation. The intervention time of mild hypothermia treatment for patients with indications is significantly delayed, causing serious adverse effects on the neurological function prognosis of patients and increasing the mortality rate of patients. At the same time, the currently commonly used mild hypothermia treatment equipment mentioned above is all systemic hypothermia, which directly or indirectly reduces the blood temperature and then reduces the brain temperature. However, during this process, the incidence of adverse complications such as infection, electrolyte disorder, coagulation function disorder, platelet reduction, and gastrointestinal function disorder caused by systemic hypothermia is high, and in severe cases, it can endanger the life of the patient, making the mild hypothermia treatment effect unsatisfactory, the complication incidence rate high, and even increasing the mortality rate of the patient.

[0004] Therefore, it is necessary to design a portable intracranial hypothermia device for nasal cavity for patients with craniocerebral trauma and after cardiopulmonary resuscitation, which can be used in various scenarios such as pre-hospital first aid site, transportation, the emergency department, and the surgical process, so that such patients can receive mild hypothermia treatment as early as possible to reduce treatment complications. Summary of the Invention

[0005] In order to solve the above technical problems, the utility model provides a controllable intracranial hypothermia brain protection device for nasal cavity, which is easy to carry, can be used for brain hypothermia treatment and protection on site or during transportation, shortens the intervention time of hypothermia treatment for patients, reduces brain tissue damage caused by increased brain temperature, improves the neurological function prognosis of patients. At the same time, the temperature measuring mechanism monitors the change of brain temperature in real time and adjusts the delivery volume of the cooling spray accordingly, so that the brain temperature is maintained at a constant level.

[0006] The technical solution of the utility model is as follows:

[0007] The present utility model provides a controllable intracranial hypothermia brain protection device, comprising:

[0008] A cooling mechanism, which includes a pressurized cooling tank and an intubation assembly connected thereto. The intubation assembly is provided with at least one flexible tube that can be inserted into the nasal cavity to deliver the cooling spray in the pressurized cooling tank into the nasal cavity through the flexible tube. The intubation assembly is also provided with a flow regulating valve;

[0009] A temperature measuring mechanism, which is provided with at least one temperature measuring probe that can extend into the external auditory canal to measure the tympanic temperature;

[0010] A control mechanism, wherein the flow regulating valve and the temperature measuring probe are electrically connected to the control mechanism to adjust the delivery flow rate of the cooling spray according to the tympanic temperature data detected by the temperature measuring probe through the flow regulating valve.

[0011] Preferably, the end of the temperature measuring probe is provided with a temperature sensing element that can extend into the external auditory canal and a balloon plug that can be clamped at the entrance of the ear canal;

[0012] The end of the temperature sensing element is provided with a temperature sensor electrically connected to the control mechanism.

[0013] Preferably, the intubation assembly includes a connecting pipe with one end connected to the pressurized cooling tank and a pipe end head provided at the other end of the connecting pipe;

[0014] The flexible tube is provided on the pipe end head and is connected to the connecting pipe, and the flow regulating valve is provided at the cooling spray outlet position of the pressurized cooling tank.

[0015] Preferably, the intubation assembly further includes a fixing strap provided on the pipe end head, and the fixing strap is arranged opposite to the flexible tube.

[0016] Preferably, the controllable intracranial hypothermia brain protection device provided by the present utility model further includes a box body with an internal cavity, and the pressurized cooling tank and the control mechanism are both arranged in the box body.

[0017] Preferably, the box body is provided with a replacement opening for replacing the pressurized cooling tank, and the box body is also provided with a viewing window communicating with its internal cavity.

[0018] Preferably, the control mechanism includes a controller arranged inside the box body and a touch screen embedded in the side wall of the box body;

[0019] The flow regulating valve, the temperature measuring probe, and the touch screen are all electrically connected to the controller.

[0020] Preferably, an internal power supply is further provided inside the box body, and the internal power supply is electrically connected to the control mechanism;

[0021] A charging socket connected to the internal power supply is provided on the side wall of the box body.

[0022] The present utility model has the following advantages and effects compared with the prior art:

[0023] (1) By using a temperature measurement probe that can be inserted into the external auditory canal, the tympanic cavity temperature can be monitored in real time. Since there is a significant correlation between the tympanic cavity temperature and the brain temperature, the brain temperature can be reflected in real time by monitoring the tympanic cavity temperature, so as to know and judge the brain temperature state and the cooling treatment effect of the patient in real time;

[0024] (2) By using a control mechanism connected to the flow regulating valve and the temperature measurement probe, the control mechanism can adjust the flow rate passing through the flow regulating valve according to the temperature data fed back by the temperature measurement probe, so as to adjust the flow rate and flow of the cooling spray delivered into the nasal cavity, avoid damage caused by too low temperature, keep the brain temperature at a constant level, and improve the effect of mild hypothermia treatment;

[0025] (3) By using a rechargeable internal power supply, the overall cooling device is convenient to carry, reduces the limitations of the use environment and use scenarios, and can be used for the mild hypothermia treatment of patients at the pre-hospital emergency site, during transportation, in the emergency department, and during the operation. It enables patients to receive mild hypothermia treatment as early as possible at the first time, advances the intervention time of the treatment, and thus reduces the mortality rate of patients and improves the neurological function prognosis of patients. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the controllable nasal cavity cooling brain protection device in the embodiment of the present utility model;

[0027] Figure 2 It is another schematic structural diagram of the controllable nasal cavity cooling brain protection device in the embodiment of the present utility model.

[0028] Reference numerals: 1, pressurized cooling tank; 2, intubation assembly; 21, hose; 22, connecting pipe; 23, pipe end; 24, fixing strap; 3, temperature measurement probe; 31, temperature sensing element; 32, balloon plug; 4, box body; 41, replacement port; 42, viewing window; 43, touch screen; 44, charging socket. Detailed Embodiments

[0029] In order to enable those skilled in the art to better understand the present utility model, the present utility model will be further described in detail below in conjunction with specific embodiments.

[0030] Embodiment:

[0031] As Figures 1 - 2As shown in the figure, the present utility model provides a controllable intracranial cooling brain protection device, which includes a box body 4 with an internal cavity, and a cooling mechanism, a temperature measuring mechanism and a control mechanism arranged inside the box body 4.

[0032] The cooling mechanism includes a pressurized cooling tank 1 and an intubation assembly 2 connected thereto. Refer to Figure 1 As shown, the pressurized cooling tank 1 is arranged in the cavity of the box body 4, and a replacement port 41 for replacing the pressurized cooling tank 1 is arranged on the side wall of the box body 4. Refer to Figure 2 As shown, a viewing window 42 communicating with the internal cavity is arranged on the top wall of the box body 4 to observe the usage state of the pressurized cooling tank 1. A pressurized cooling spray is arranged in the pressurized cooling tank 1 to convey the cooling spray into the nasal cavity through the intubation assembly 2 inserted into the nasal cavity. It should be noted that the cooling spray in this embodiment may specifically be low-temperature dry cold air, which passes through the intubation assembly 2 and exchanges heat with the nasal cavity and surrounding tissues after entering the nasal cavity to achieve the cooling effect; it may also be a mixture of other low-temperature volatile coolants and air, such as the inert coolant perfluorohexane, etc. The cooling spray is in a fog state under the pressurized environment in the pressurized cooling tank 1 and quickly volatilizes after being conveyed and sprayed into the nasal cavity through the intubation assembly 2. During the volatilization process, the heat in the skull is directly exchanged through the conduction of the cranial base and surrounding tissues and indirectly through the convection of blood flow, so as to achieve the effects of cooling and mild hypothermia treatment.

[0033] In addition, it should be emphasized that since the device provided in this embodiment is used in first aid treatment scenarios, including but not limited to pre-hospital first aid sites, during transportation, in the emergency department, and during surgery, before using the device provided in this embodiment, it is necessary to ensure that the patient's airway is completely protected (oral tracheal intubation).

[0034] The intubation assembly 2 is provided with a flow regulating valve (not shown in the figure) electrically connected to the control mechanism. Specifically, the flow regulating valve is arranged at the cooling spray outlet position of the pressurized cooling tank 1 to monitor and adjust the flow rate of the conveyed cooling spray.

[0035] Optionally, in some embodiments, the pressurized cooling tank 1 is connected with a small refrigeration and pressurization device. Since the amount of cooling spray stored in the pressurized cooling tank 1 is limited, a continuously operating small refrigeration and pressurization device is used to generate the cooling spray, thereby improving the endurance and continuous usability of the overall device.

[0036] It should be noted that because the specific use scenario of the device in this embodiment is a first aid treatment scenario, the small refrigeration and pressurization device needs to be selected on the premise of the portability of the overall device; in addition, the small refrigeration and pressurization device specifically includes a compressor, a condenser, an evaporator and a throttling component. Since it is a mature existing technology, its structure and principle will not be elaborated here.

[0037] As shown Figure 1 in FIG. 1, the intubation assembly 2 includes a connecting pipe 22 with one end communicating with the pressurized cooling tank 1, a pipe end 23 provided at the other end of the connecting pipe 22, and at least one hose 21 provided on the pipe end 23 and communicating with the connecting pipe 22. In this embodiment, specifically two hoses 21 are provided, and the hoses 21 can be inserted into the nasal cavity to deliver the cooling spray into the nasal cavity. It should be noted that the lengths of the connecting pipe 22, the hose 21, and the pipe end 23 are not limited by the lengths shown in the figure, and can be specifically set according to actual usage requirements.

[0038] Optionally, in some embodiments, a plurality of laterally spaced side holes are provided on the side wall of the hose 21 to evenly and rapidly spray the cooling spray onto the inner wall surface of the nasal cavity, improving the cooling efficiency and effect.

[0039] Refer to Figure 1 FIG. 2, the intubation assembly 2 further includes a fixing strap 24 provided on the pipe end 23. The fixing strap 24 is disposed opposite to the hose 21. The fixing strap 24 can surround the patient's head for one week and be locked and fixed to ensure that the hose 21 is stably inserted into the nasal cavity and prevent the hose 21 from falling off during the cooling process.

[0040] The temperature measuring mechanism includes at least one temperature measuring probe 3 detachably inserted into the box body 4. In this embodiment, two temperature measuring probes 3 are provided, and they are electrically connected to a control mechanism provided inside the box body 4. Refer to Figure 1 FIG. 3, a temperature sensing member 31 that can extend into the inner part of the external auditory canal and a balloon plug 32 clamped at the entrance of the ear canal are provided at the end of the temperature measuring probe 3. The temperature sensing member 31 is in the shape of a soft columnar platform or a soft conical platform, and a temperature sensor embedded therein is provided at its end. The temperature sensor is electrically connected to the control mechanism to detect the tympanic temperature and feedback the detected result to the control mechanism. The balloon plug 32 is in the shape of a soft spherical plug, which can stably fix the temperature measuring probe 3 in the ear area and at the same time isolate the influence of the external environmental temperature to ensure the accuracy of the temperature measurement result.

[0041] The control mechanism is arranged in the cavity of the box body 4. The control mechanism is electrically connected to the flow regulating valve of the intubation assembly 2 and the temperature measuring probe 3 of the temperature measuring mechanism to adjust the delivery flow rate of the cooling spray in real time according to the temperature data measured by the temperature measuring probe 3. For example, when the tympanic temperature is too low, it can feedback and adjust to reduce the delivery flow rate and flow of the cooling spray, so as to maintain the brain temperature at a relatively constant level.

[0042] The control mechanism includes a controller (not shown in the figure) disposed inside the box body 4 and a touch screen 43 embedded in the side wall of the box body 4. The touch screen 43 is electrically connected to the controller to display data such as the delivery flow rate, delivery flow volume, tympanic cavity temperature, cooling treatment duration, spray residue in the pressurized cooling tank 1, and tank pressure of the cooling spray to the operator in real time through the touch screen 43, facilitating the operator to know the operation status of the device and the patient's physical signs information in real time. It should be noted that the controller can be a PLC controller or other microprocessors. Since it is a mature existing technology, it will not be elaborated in detail here.

[0043] An internal power supply (not shown in the figure) is also disposed inside the box body 4. The internal power supply is electrically connected to the control mechanism to supply power to the controller of the control mechanism, the touch screen 43, the flow regulating valve, and the temperature measuring probe 3 of the temperature measuring mechanism. Refer to Figure 2 As shown, a charging socket 44 connected to the internal power supply is provided on the side wall of the box body 4 to charge the internal power supply, so that the overall device can be carried and used, overcoming the limitations of the use environment and use scenarios. It can be used for mild hypothermia treatment of patients in pre-hospital emergency sites, during transportation, in the emergency department, and during surgery, ensuring that patients can receive treatment and protection as soon as possible, reducing the mortality rate of patients and improving the prognosis of neurological function.

[0044] In summary, the controllable nasal cavity cooling brain protection device provided by the present utility model is easy to carry and can be used for brain hypothermia treatment and protection in pre-hospital emergency sites, during transportation, in the emergency department, and during surgery, shortening the intervention time for hypothermia treatment of patients, reducing brain tissue damage caused by elevated brain temperature, and improving the prognosis of patients' neurological function. At the same time, the temperature measuring mechanism monitors the change of brain temperature in real time and adjusts the delivery volume of the cooling spray accordingly, so that the brain temperature is maintained at a constant level.

[0045] The above is only the preferred embodiment of the present utility model, and does not limit the patent scope of the present utility model. All equivalent changes and modifications made according to the scope of the present utility model should still fall within the scope covered by the present utility model.

Claims

1. A controllable nasal cooling brain protection device, characterized in that: include: A cooling mechanism, the cooling mechanism comprising a pressurized cooling tank (1), and a cannula assembly (2) connected thereto, the cannula assembly (2) being provided with at least one hose (21) which can be inserted into the nasal cavity, so as to transport the cooling spray in the pressurized cooling tank (1) into the nasal cavity through the hose (21), and the cannula assembly (2) being further provided with a flow regulating valve; A temperature measuring mechanism, the temperature measuring mechanism being provided with at least one temperature measuring probe (3) which can be inserted into the external auditory canal to measure the tympanic temperature; The control mechanism is electrically connected to the flow regulating valve and the temperature measuring probe (3) so as to adjust the delivery flow of the cooling spray through the flow regulating valve according to the eardrum temperature data detected by the temperature measuring probe (3).

2. The controllable intranasal cooling brain protection device according to claim 1 is characterized in that: The end of the temperature measuring probe (3) is provided with a temperature sensing element (31) that can be extended into the external auditory canal, and a balloon plug (32) that can be clamped at the entrance of the auditory canal; A temperature sensor electrically connected to the control mechanism is provided at the end of the temperature sensing element (31).

3. The controllable intranasal cooling brain protection device according to claim 1 is characterized in that: The cannula assembly (2) comprises a connecting pipe (22) having one end connected to the pressurized cooling tank (1), and a pipe end (23) arranged at the other end of the connecting pipe (22); The hose (21) is arranged on the pipe end (23) and is connected to the connecting pipe (22); the flow regulating valve is arranged at the cooling spray outlet position of the pressurized cooling tank (1).

4. The controllable intranasal cooling brain protection device according to claim 3 is characterized in that: The cannula assembly (2) further comprises a fixing strap (24) arranged on the tube end (23), wherein the fixing strap (24) is arranged opposite to the hose (21).

5. The controllable intranasal cooling brain protection device according to claim 1 is characterized in that: It also includes a box body (4) with a built-in cavity, and the pressurized cooling tank (1) and the control mechanism are both arranged in the box body (4).

6. The controllable intranasal cooling brain protection device according to claim 5 is characterized in that: The box body (4) is provided with a replacement port (41) for replacing the pressurized cooling tank (1), and the box body (4) is also provided with a visual window (42) communicating with the internal cavity thereof.

7. The controllable intranasal cooling brain protection device according to claim 5 is characterized in that: The control mechanism comprises a controller arranged inside the box (4), and a touch screen (43) embedded in a side wall of the box (4); The flow regulating valve, the temperature measuring probe (3), and the touch screen (43) are all electrically connected to the controller.

8. The controllable intranasal cooling brain protection device according to claim 5 is characterized by: A built-in power supply is also provided inside the box (4), and the built-in power supply is electrically connected to the control mechanism; The side wall of the box body (4) is provided with a charging socket (44) connected to the built-in power source.

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