A constant temperature analog finger device

Abstract

The utility model belongs to active medical instrument safety detection field, concretely is a kind of constant temperature simulation finger device, including water bath cabinet, water bath cabinet side outside is provided with children simulation finger and adult simulation finger, the inside of children simulation finger, adult simulation finger is all linked with water bath cabinet inside, children simulation finger includes children finger shape acrylic shell and the children finger silica gel skin covered on its surface, adult simulation finger includes adult finger shape acrylic shell and the adult finger silica gel skin covered on its surface, water bath cabinet inside is provided with heating pipe, children finger temperature sensor and adult finger temperature sensor, heating pipe, children finger temperature sensor, adult finger temperature sensor are electrically connected with main control chip respectively;The utility model compares with prior art, the form and constant temperature of real human finger can be realized, to meet the test demand of blood oxygen probe and finger tissue contact surface thermal performance detection, improve the efficiency of detection.

Description

[Technical Field]

[0001] This utility model belongs to the field of active medical device safety testing, specifically a constant temperature simulated finger device. [Background Technology]

[0002] Pulse oximeters are widely used to monitor the oxygen content in human arterial blood. However, the devices generate heat during operation, and prolonged contact between the oximeter probe and the skin can cause burns. To reduce the risks associated with excessive heat generation from pulse oximeters, the international standard ISO 80601-2-61 specifies the safe temperature threshold for the contact surface between the oximeter probe and finger tissue during use and requires thermal performance testing.

[0003] However, the standard does not require specific methods for measuring skin temperature under a pulse oximeter probe and lacks a description of temperature testing equipment. It recommends that manufacturers choose their own testing methods and suggests using human bodies or simulated instruments. However, the human body testing method has the problems of inconvenience in operation and easy error. [Utility Model Content]

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a constant-temperature simulated finger device that can achieve the shape and constant temperature of a real human finger, thereby meeting the testing requirements for detecting the thermal properties of the contact surface between the blood oxygen probe and finger tissue and improving testing efficiency.

[0005] To achieve the above objectives, a constant-temperature simulated finger device is designed, comprising a water bath 7. A child simulated finger 3 and an adult simulated finger 4 are disposed on the outer side of the water bath 7. The interiors of both the child simulated finger 3 and the adult simulated finger 4 are connected to the interior of the water bath 7. The child simulated finger 3 includes a child-shaped acrylic shell 52 and a child-shaped silicone skin 51. The child-shaped acrylic shell 52 is shaped like a child's finger, and the child-shaped silicone skin 51 covers the surface of the child-shaped acrylic shell 52. The adult simulated finger 4 includes an adult-shaped acrylic shell 62 and an adult-shaped silicone skin 61. The adult-shaped acrylic shell 62 is shaped like an adult's finger, and the adult-shaped silicone skin 61 covers the surface of the adult-shaped acrylic shell 62. A heating element 2, a child finger temperature sensor 5, and an adult finger temperature sensor 6 are disposed inside the water bath 7. The heating element 2, the child finger temperature sensor 5, and the adult finger temperature sensor 6 are electrically connected to a main control chip 14.

[0006] Furthermore, the water bath 7 is provided with a control panel 1 on the outside. The control panel 1 includes a temperature display screen 11, a power switch 12, a temperature adjustment knob 13, and a main control chip 14. The temperature display screen 11, the power switch 12, and the temperature adjustment knob 13 are installed on the surface of the control panel 1, and the main control chip 14 is installed inside the control panel 1.

[0007] Furthermore, the child finger temperature sensor 5 is located at the connection between the child simulated finger 3 and the water bath 7, and the adult finger temperature sensor 6 is located at the connection between the adult simulated finger 4 and the water bath 7. The child finger temperature sensor 5 and the adult finger temperature sensor 6 measure the water temperature using temperature sensors and transmit the real-time temperature data to the main control chip 14 via digital signals.

[0008] Furthermore, the temperature display screen 11, power switch 12, and temperature adjustment knob 13 are electrically connected to the main control chip 14, and the temperature display screen 11 is electrically connected to the child finger temperature sensor 5, the adult finger temperature sensor 6, and the temperature adjustment knob 13. The temperature display screen 11 displays the temperature values ​​collected by the child finger temperature sensor 5 and the adult finger temperature sensor 6, as well as the target temperature set by the temperature adjustment knob 13, in real time.

[0009] Furthermore, the main control chip 14 is used to receive the target temperature set by the temperature adjustment knob 13 and control the heating tube 2, thereby controlling the water bath temperature to control the surface temperature of the child simulated finger 3 and the adult simulated finger 4.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] (1) The present invention utilizes acrylic material and silicone finger skin to make children's simulated fingers and adults' simulated fingers with light-transmitting characteristics, which meets the working conditions of pulse oximetry equipment to emit infrared and red light through the fingers and measure the intensity change of light after passing through the blood, and realizes the simulation of the partial absorption characteristics of human fingers to infrared and red light.

[0012] (2) This utility model utilizes a water bath, heating tube, temperature sensor, temperature adjustment knob, temperature display screen and main control chip to realize real-time monitoring and adjustment of the temperature of children's simulated fingers and adults' simulated fingers, which increases the convenience of detection and the accuracy of temperature control.

[0013] (3) This utility model uses children’s simulated fingers and adults’ simulated fingers to meet the detection needs of different patient modes of pulse oximetry equipment;

[0014] (4) This utility model realizes the shape and constant temperature of a real human finger to meet the testing requirements of thermal performance detection of the contact surface between the blood oxygen probe and finger tissue, improves the detection efficiency, and is worth promoting and applying. [Image Description]

[0015] Figure 1 This is a top view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic block diagram of the control system of this utility model;

[0017] Figure 3 This is a schematic diagram of the control panel of this utility model;

[0018] Figure 4 This is a structural schematic diagram of the child's simulated finger and the adult simulated finger of this utility model;

[0019] In the diagram: 1. Control panel; 2. Heating element; 3. Child simulated finger; 4. Adult simulated finger; 5. Child finger temperature sensor; 6. Adult finger temperature sensor; 7. Water bath; 11. Temperature display screen; 12. Power switch; 13. Temperature adjustment knob; 14. Main control chip; 51. Silicone skin for child's finger; 52. Acrylic shell shaped like child's finger; 61. Silicone skin for adult's finger; 62. Acrylic shell shaped like adult's finger. [Detailed Implementation]

[0020] As attached Figure 1 To be continued Figure 4 As shown, this utility model provides a constant temperature simulated finger device, including a water bath 7. A child simulated finger 3 and an adult simulated finger 4 are disposed on the outer side of the water bath 7. The interiors of both the child simulated finger 3 and the adult simulated finger 4 are connected to the interior of the water bath 7. The child simulated finger 3 includes a child-shaped acrylic shell 52 and a child-shaped silicone skin 51. The child-shaped acrylic shell 52 is shaped like a child's finger, and the child-shaped silicone skin 51 covers the surface of the child-shaped acrylic shell 52. The adult simulated finger 4 includes an adult-shaped acrylic shell 62 and an adult-shaped silicone skin 61. Shaped like an adult finger, the adult finger silicone skin 61 covers the surface of the adult finger-shaped acrylic shell 62. The water bath 7 is equipped with a heating tube 2, a child finger temperature sensor 5, and an adult finger temperature sensor 6. The heating tube 2, child finger temperature sensor 5, and adult finger temperature sensor 6 are electrically connected to the main control chip 14. The water bath 7 is equipped with a control panel 1 on the outside. The control panel 1 includes a temperature display screen 11, a power switch 12, a temperature adjustment knob 13, and a main control chip 14. The temperature display screen 11, power switch 12, and temperature adjustment knob 13 are installed on the surface of the control panel 1, and the main control chip 14 is installed inside the control panel 1.

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] like Figure 1 The temperature-controlled simulated finger device shown includes a control panel 1, a heating element 2, a child simulated finger 3, an adult simulated finger 4, a child finger temperature sensor 5, an adult finger temperature sensor 6, and a water bath 7; as shown. Figure 3 As shown, the control panel 1 is located outside the water bath 7 and includes a temperature display screen 11, a power switch 12, a temperature adjustment knob 13, and a main control chip 14. The temperature display screen 11, power switch 12, and temperature adjustment knob 13 are mounted on the surface of the control panel 1, while the main control chip 14 is mounted inside the control panel 1. Figure 4 As shown, the child simulated finger 3 and the adult simulated finger 4 respectively include a child finger-shaped acrylic shell 52 and a child finger silicone skin 51 covering its surface, an adult finger-shaped acrylic shell 62 and an adult finger silicone skin 61.

[0023] The child simulated finger 3 and the adult simulated finger 4 are located on the outside of the side of the water bath 7 and are internally connected to the inside of the water bath 7. The heating element 2, the child finger temperature sensor 5, and the adult finger temperature sensor 6 are located inside the water bath 7 and are connected to the main control chip 14. The child finger temperature sensor 5 and the adult finger temperature sensor 6 are respectively located at the connection points between the child simulated finger 3, the adult simulated finger 4 and the water bath 7. They use DS18B20 temperature sensors to measure the water temperature and transmit the real-time temperature data to the main control chip 14 via digital signals. The temperature display screen 11, the power switch 12, and the temperature adjustment knob 13 are connected to the main control chip 14. The temperature display screen 11 displays the temperature values ​​collected by the child finger temperature sensor 5 and the adult finger temperature sensor 6 in real time, as well as the target temperature set by the temperature adjustment knob 13. The main control chip 14 receives the target temperature set by the temperature adjustment knob 13 and uses a proportional-integral-derivative PID algorithm to control the heating element, thereby controlling the water bath temperature to achieve precise control of the surface temperature of the child simulated finger 3 and the adult simulated finger 4.

[0024] As a specific embodiment of this utility model: When using this utility model, fill the water bath with purified water, clip the pulse oximetry device to be tested onto the child's or adult's simulated finger, press the power switch on the control panel, and set the target temperature of the child's or adult's simulated finger by adjusting the temperature adjustment knob. When the average value of the child's finger temperature sensor and the adult's finger temperature sensor displayed in real time on the temperature display screen stabilizes at the target value, the thermal performance test of the contact surface between the pulse oximetry probe and the finger tissue can begin.

[0025] The contents not described in detail in this specification are existing technologies known to those skilled in the art. The standard parts used can be purchased from the market, and the irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the circuit connection adopts conventional connection methods in the existing technology, which will not be described in detail here.

[0026] This utility model is not limited to the above-described embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of this utility model shall be considered equivalent substitutions and shall be included within the protection scope of this utility model.

Claims

1. A constant-temperature simulated finger device, characterized in that: The system includes a water bath tank (7), on the outside of which are provided children's simulated fingers (3) and adults' simulated fingers (4). The interiors of the children's simulated fingers (3) and adults' simulated fingers (4) are connected to the interior of the water bath tank (7). The children's simulated fingers (3) include a children's finger-shaped acrylic shell (52) and a children's finger silicone skin (51). The children's finger-shaped acrylic shell (52) is shaped like a children's finger, and the children's finger silicone skin (51) covers the surface of the children's finger-shaped acrylic shell (52). The adults' simulated fingers (4) are provided with children's simulated fingers (3) and adults' simulated fingers (4). The finger (4) includes an acrylic shell (62) shaped like an adult finger and a silicone skin (61) shaped like an adult finger. The acrylic shell (62) is shaped like an adult finger, and the silicone skin (61) covers the surface of the acrylic shell (62). The water bath (7) is equipped with a heating tube (2), a child finger temperature sensor (5), and an adult finger temperature sensor (6). The heating tube (2), the child finger temperature sensor (5), and the adult finger temperature sensor (6) are electrically connected to the main control chip (14).

2. The constant temperature simulated finger device as described in claim 1, characterized in that: The water bath (7) is provided with a control panel (1) on the outside. The control panel (1) includes a temperature display screen (11), a power switch (12), a temperature adjustment knob (13), and a main control chip (14). The temperature display screen (11), the power switch (12), and the temperature adjustment knob (13) are installed on the surface of the control panel (1), and the main control chip (14) is installed inside the control panel (1).

3. The constant temperature simulated finger device as described in claim 2, characterized in that: The child finger temperature sensor (5) is located at the connection between the child simulated finger (3) and the water bath (7), and the adult finger temperature sensor (6) is located at the connection between the adult simulated finger (4) and the water bath (7). The child finger temperature sensor (5) and the adult finger temperature sensor (6) measure the water temperature using temperature sensors and transmit the real-time temperature data to the main control chip (14) via digital signals.

4. The constant temperature simulated finger device as described in claim 2, characterized in that: The temperature display screen (11), power switch (12), and temperature adjustment knob (13) are electrically connected to the main control chip (14). The temperature display screen (11) is electrically connected to the child finger temperature sensor (5), the adult finger temperature sensor (6), and the temperature adjustment knob (13). The temperature display screen (11) displays the temperature values ​​collected by the child finger temperature sensor (5) and the adult finger temperature sensor (6) and the target temperature set by the temperature adjustment knob (13) in real time.

5. The constant temperature simulated finger device as described in claim 4, characterized in that: The main control chip (14) is used to receive the target temperature set by the temperature adjustment knob (13) and control the heating tube (2), thereby controlling the water bath temperature to control the surface temperature of the child simulated finger (3) and the adult simulated finger (4).

Images