Zero-heat-flux core body temperature monitor

Abstract

The utility model provides a zero-heat-flux core body temperature monitor which comprises a controller and a power supply circuit used for supplying power to the controller, and the controller is connected with a zero-flux temperature measuring device and a displayer. The zero-flux temperature measuring device is provided with a protective cover, a first cavity is formed in one end of the protective cover, a first temperature sensor used for measuring the skin temperature of a patient is arranged in the first cavity, and a zero-heat-flux channel is arranged above the first cavity; according to the zero-flux temperature measuring device, the area covering the skin is increased through the protective cover, transverse heat convection of a temperature measuring area is reduced, influence factors interfering acquisition of the core body temperature are reduced, the zero-flux temperature measuring device can be closer to an ideal state, and the accuracy of core body temperature monitoring is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of body temperature monitoring, and particularly relates to a zero heat flux core body temperature monitor. Background Technique

[0002] At present, the commercial zero heat flux thermometer manufacturer is the zero heat flux temperature probe of 3M Company in the United States, which is around a flexible circuit board and includes a heater and two precision thermistors. A layer of insulating foam is placed between the two thermistors and another layer of foam is adhered to the top of the probe to minimize heat loss.

[0003] However, the applicant found in combination with past use experience during the perioperative period of patients that the skin heat in the temperature measurement area is affected by lateral blood flow and air flow, which will have a certain impact on the measurement accuracy.

[0004] Therefore, it is necessary to design a zero heat flux core body temperature monitor that can reduce the lateral heat convection in the temperature measurement area and improve the accuracy of core body temperature monitoring to solve the current technical problems. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the utility model provides a zero heat flux core body temperature monitor that reduces the lateral heat convection in the temperature measurement area and improves the accuracy of core body temperature monitoring.

[0006] The technical solution of the utility model is as follows: a zero heat flux core body temperature monitor, including a controller and a power supply circuit for supplying power to it, a zero flux temperature measurement device and a display are connected to the controller; the zero flux temperature measurement device has a protective cover, a first cavity is opened inside one end of the protective cover, a first temperature sensor for measuring the skin temperature of a patient is arranged inside the first cavity, and a zero heat flux channel is arranged above the first cavity; the zero heat flux channel has a second cavity arranged inside the protective cover and communicated with the top of the first cavity, a second temperature sensor for detecting the temperature of the protective cover is arranged inside the second cavity, and a heating component for heating it is arranged inside the protective cover; the first temperature sensor, the second temperature sensor and the heating component are all connected to the controller.

[0007] One end of the protective cover close to the first cavity is provided with a heat insulation bonding layer for pasting on the patient's skin, a hole is opened in the middle of the heat insulation bonding layer, and the first temperature sensor is fixedly arranged in the hole.

[0008] The first temperature sensor is fixedly arranged in the hole by being coated with silicone rubber.

[0009] One end of the protective cover facing away from the first cavity is provided with a third cavity matching the heating component, and the heating component is arranged inside the third cavity.

[0010] A monitor interface is connected to the controller.

[0011] A storage battery is connected to the power supply circuit.

[0012] The heating component is a thin-film electric heater.

[0013] Advantages of the present utility model:

[0014] (1) In the present utility model, the protective cover is used to increase the area covering the skin, reduce the lateral heat convection in the temperature measurement area, and reduce the influencing factors interfering with the acquisition of core body temperature, making the zero-flux temperature measurement device closer to the ideal state and improving the accuracy of core body temperature monitoring.

[0015] (2) The first temperature sensor measures the skin temperature of the patient, the second temperature sensor measures the temperature of the protective cover, and the heater is servo-controlled to keep the temperature between the protective cover and the measured patient's body the same, forming a zero-heat-flux channel above the first temperature sensor, basically blocking the heat dissipation in the covered area, and enabling the skin at the monitoring site to maintain heat balance with its deep tissues, achieving the purpose of core temperature monitoring. Description of the Drawings

[0016] Figure 1 It is a principle block diagram of the zero-heat-flux core body temperature monitor in the present utility model.

[0017] Figure 2 It is one of the structural schematic diagrams of the zero-flux temperature measurement device in the present utility model.

[0018] Figure 3 It is another structural schematic diagram of the zero-flux temperature measurement device in the present utility model.

[0019] Figure 4 It is a principle block diagram of the zero-flux temperature measurement device in the present utility model. Detailed Embodiment

[0020] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to limit the present invention or its application or use in any way. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully convey the scope of the present invention to those skilled in the art. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0021] The terms "first", "second", and similar terms used in the present invention do not denote any order, quantity, or importance, but are merely used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements preceding such terms cover the elements listed after such terms, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] As Figures 1 to 4 shown, a zero heat flux core body temperature monitor includes a controller 20 and a power supply circuit 30 for powering it. A zero flux temperature measuring device 10 and a display 40 are connected to the controller 20; the zero flux temperature measuring device 10 has a protective cover 1. A first cavity 11 is provided inside one end of the protective cover 1. A first temperature sensor 3 for measuring the skin temperature of a patient is provided inside the first cavity 11. A zero heat flux channel 2 is provided above the first cavity 11; the zero heat flux channel 2 has a second cavity 22 provided inside the protective cover 1 and communicating with the top of the first cavity 11. A second temperature sensor 21 for detecting the temperature of the protective cover 1 is provided inside the second cavity 22. A heating component 24 for heating the protective cover 1 is provided inside the protective cover 1; the first temperature sensor 3, the second temperature sensor 21, and the heating component 24 are all connected to the controller 20; in this embodiment, by increasing the area covering the skin with the protective cover 1, the lateral heat convection in the temperature measuring area is reduced, and the influencing factors interfering with the acquisition of the core body temperature are reduced, making the zero flux temperature measuring device 10 closer to the ideal state and improving the accuracy of core body temperature monitoring; the first temperature sensor 3 measures the skin temperature of the patient, the second temperature sensor 21 measures the temperature of the protective cover 1, and the heater 22 is servo-controlled to keep the temperature between the protective cover 1 and the patient's body the same, forming a zero heat flux channel 2 above the first temperature sensor 3, basically blocking the heat dissipation in the covered area, and the skin at the monitoring site will maintain heat balance with its deep tissues, achieving the purpose of monitoring the core temperature.

[0023] In some embodiments, a heat-insulating fitting layer 6 for pasting on the patient's skin is provided at one end of the protective cover 1 close to the first cavity 11. A hole 61 is formed in the middle of the heat-insulating fitting layer 6, and the first temperature sensor 3 is fixedly arranged in the hole 61; the arrangement of the heat-insulating fitting layer 6 can further reduce the influence of air flow on the skin temperature of the measurement area and improve the measurement accuracy. At the same time, the first temperature sensor 3 can be in contact with the skin through the hole 61 to measure the skin temperature; the heat-insulating fitting layer 6 can be made of materials such as heat-insulating foam.

[0024] In some embodiments, as a specific fixing method of the first temperature sensor 3, the first temperature sensor 3 is coated and fixed in the hole 61 by silicone rubber 7. The silicone rubber 7 has good heat conduction performance and can efficiently transfer heat, with little influence on the detection of skin temperature.

[0025] In some embodiments, a third cavity 23 matching the heating component 24 is provided at one end of the protective cover 1 facing away from the first cavity 11. The heating component 24 is arranged inside the third cavity 23, and the heating component 24 generates heat after being powered on to heat the protective cover 1.

[0026] In some embodiments, a monitor interface 60 is connected to the controller 20. Through the monitor interface 60, it can be connected to a monitor for use, realizing the transmission of body temperature monitoring data with the monitor, and directly and accurately recording the body temperature monitoring data in the medical record system.

[0027] In some embodiments, a storage battery 50 is connected to the power supply circuit 30. Through the power supply mode of the storage battery 50, during the process of the patient's transfer of the place, continuous body temperature monitoring is realized, broadening the use range of the device, especially suitable for the application of perioperative patients, thus improving the situation that patients need to receive body temperature monitoring through different channels and methods when changing to different treatment units, and reducing the labor intensity of medical staff.

[0028] In the above embodiments, as a specific implementation manner of the heating component 24, the heating component 24 is a thin-film electric heater, and the thin-film electric heater is encapsulated in the third cavity 23 by silicone rubber.

[0029] So far, the embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details well known in the art have not been described. Those skilled in the art can fully understand how to implement the technical solutions disclosed here based on the above description.

[0030] The above-described embodiments merely represent some implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A zero heat flux core body temperature monitor, characterized in that: The invention comprises a controller and a power supply circuit for powering the controller, wherein the controller is connected with a zero-flux temperature measuring device and a display; the zero-flux temperature measuring device has a protective cover, a first cavity is provided inside one end of the protective cover, a first temperature sensor for measuring the skin temperature of a patient is provided inside the first cavity, and a zero heat flux channel is provided above the first cavity; The zero heat flux channel has a second cavity arranged inside the protective cover and connected to the top of the first cavity, a second temperature sensor for detecting the temperature of the protective cover is arranged inside the second cavity, and a heating component for heating the protective cover is arranged inside the protective cover; the first temperature sensor, the second temperature sensor and the heating component are all connected to the controller.

2. The zero heat flux core body temperature monitor according to claim 1, wherein: A heat-insulating adhesive layer for sticking to the patient's skin is arranged at one end of the protective cover close to the first cavity, a hole is opened in the middle of the heat-insulating adhesive layer, and the first temperature sensor is fixedly arranged in the hole.

3. The zero heat flux core body temperature monitor according to claim 2, characterized in that: The first temperature sensor is fixed in the hole by being covered with silicone rubber.

4. The zero heat flux core body temperature monitor according to claim 1, characterized in that: A third cavity matching the heating component is arranged on one end of the protective cover away from the first cavity, and the heating component is arranged inside the third cavity.

5. The zero heat flux core body temperature monitor according to claim 1, characterized in that: The controller is connected with a monitor interface.

6. The zero heat flux core body temperature monitor according to claim 1, characterized in that: The power supply circuit is connected with a battery.

7. The zero heat flux core body temperature monitor according to claim 1, characterized in that: The heating component is a thin film electric heater.

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